diff --git a/engine/libs/jconfig.h b/engine/libs/jconfig.h new file mode 100644 index 000000000..7e291c75b --- /dev/null +++ b/engine/libs/jconfig.h @@ -0,0 +1,45 @@ +/* jconfig.vc --- jconfig.h for Microsoft Visual C++ on Windows 95 or NT. */ +/* see jconfig.doc for explanations */ + +#define HAVE_PROTOTYPES +#define HAVE_UNSIGNED_CHAR +#define HAVE_UNSIGNED_SHORT +/* #define void char */ +/* #define const */ +#undef CHAR_IS_UNSIGNED +#define HAVE_STDDEF_H +#define HAVE_STDLIB_H +#undef NEED_BSD_STRINGS +#undef NEED_SYS_TYPES_H +#undef NEED_FAR_POINTERS /* we presume a 32-bit flat memory model */ +#undef NEED_SHORT_EXTERNAL_NAMES +#undef INCOMPLETE_TYPES_BROKEN + +/* Define "boolean" as unsigned char, not int, per Windows custom */ +#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ +typedef unsigned char boolean; +#endif +#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ + + +#ifdef JPEG_INTERNALS + +#undef RIGHT_SHIFT_IS_UNSIGNED + +#endif /* JPEG_INTERNALS */ + +#ifdef JPEG_CJPEG_DJPEG + +#define BMP_SUPPORTED /* BMP image file format */ +#define GIF_SUPPORTED /* GIF image file format */ +#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ +#undef RLE_SUPPORTED /* Utah RLE image file format */ +#define TARGA_SUPPORTED /* Targa image file format */ + +#define TWO_FILE_COMMANDLINE /* optional */ +#define USE_SETMODE /* Microsoft has setmode() */ +#undef NEED_SIGNAL_CATCHER +#undef DONT_USE_B_MODE +#undef PROGRESS_REPORT /* optional */ + +#endif /* JPEG_CJPEG_DJPEG */ diff --git a/engine/libs/jerror.h b/engine/libs/jerror.h new file mode 100644 index 000000000..fc2fffeac --- /dev/null +++ b/engine/libs/jerror.h @@ -0,0 +1,291 @@ +/* + * jerror.h + * + * Copyright (C) 1994-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file defines the error and message codes for the JPEG library. + * Edit this file to add new codes, or to translate the message strings to + * some other language. + * A set of error-reporting macros are defined too. Some applications using + * the JPEG library may wish to include this file to get the error codes + * and/or the macros. + */ + +/* + * To define the enum list of message codes, include this file without + * defining macro JMESSAGE. To create a message string table, include it + * again with a suitable JMESSAGE definition (see jerror.c for an example). + */ +#ifndef JMESSAGE +#ifndef JERROR_H +/* First time through, define the enum list */ +#define JMAKE_ENUM_LIST +#else +/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */ +#define JMESSAGE(code,string) +#endif /* JERROR_H */ +#endif /* JMESSAGE */ + +#ifdef JMAKE_ENUM_LIST + +typedef enum { + +#define JMESSAGE(code,string) code , + +#endif /* JMAKE_ENUM_LIST */ + +JMESSAGE(JMSG_NOMESSAGE, "Bogus message code %d") /* Must be first entry! */ + +/* For maintenance convenience, list is alphabetical by message code name */ +JMESSAGE(JERR_ARITH_NOTIMPL, + "Sorry, there are legal restrictions on arithmetic coding") +JMESSAGE(JERR_BAD_ALIGN_TYPE, "ALIGN_TYPE is wrong, please fix") +JMESSAGE(JERR_BAD_ALLOC_CHUNK, "MAX_ALLOC_CHUNK is wrong, please fix") +JMESSAGE(JERR_BAD_BUFFER_MODE, "Bogus buffer control mode") +JMESSAGE(JERR_BAD_COMPONENT_ID, "Invalid component ID %d in SOS") +JMESSAGE(JERR_BAD_DCT_COEF, "DCT coefficient out of range") +JMESSAGE(JERR_BAD_DCTSIZE, "IDCT output block size %d not supported") +JMESSAGE(JERR_BAD_HUFF_TABLE, "Bogus Huffman table definition") +JMESSAGE(JERR_BAD_IN_COLORSPACE, "Bogus input colorspace") +JMESSAGE(JERR_BAD_J_COLORSPACE, "Bogus JPEG colorspace") +JMESSAGE(JERR_BAD_LENGTH, "Bogus marker length") +JMESSAGE(JERR_BAD_LIB_VERSION, + "Wrong JPEG library version: library is %d, caller expects %d") +JMESSAGE(JERR_BAD_MCU_SIZE, "Sampling factors too large for interleaved scan") +JMESSAGE(JERR_BAD_POOL_ID, "Invalid memory pool code %d") +JMESSAGE(JERR_BAD_PRECISION, "Unsupported JPEG data precision %d") +JMESSAGE(JERR_BAD_PROGRESSION, + "Invalid progressive parameters Ss=%d Se=%d Ah=%d Al=%d") +JMESSAGE(JERR_BAD_PROG_SCRIPT, + "Invalid progressive parameters at scan script entry %d") +JMESSAGE(JERR_BAD_SAMPLING, "Bogus sampling factors") +JMESSAGE(JERR_BAD_SCAN_SCRIPT, "Invalid scan script at entry %d") +JMESSAGE(JERR_BAD_STATE, "Improper call to JPEG library in state %d") +JMESSAGE(JERR_BAD_STRUCT_SIZE, + "JPEG parameter struct mismatch: library thinks size is %u, caller expects %u") +JMESSAGE(JERR_BAD_VIRTUAL_ACCESS, "Bogus virtual array access") +JMESSAGE(JERR_BUFFER_SIZE, "Buffer passed to JPEG library is too small") +JMESSAGE(JERR_CANT_SUSPEND, "Suspension not allowed here") +JMESSAGE(JERR_CCIR601_NOTIMPL, "CCIR601 sampling not implemented yet") +JMESSAGE(JERR_COMPONENT_COUNT, "Too many color components: %d, max %d") +JMESSAGE(JERR_CONVERSION_NOTIMPL, "Unsupported color conversion request") +JMESSAGE(JERR_DAC_INDEX, "Bogus DAC index %d") +JMESSAGE(JERR_DAC_VALUE, "Bogus DAC value 0x%x") +JMESSAGE(JERR_DHT_INDEX, "Bogus DHT index %d") +JMESSAGE(JERR_DQT_INDEX, "Bogus DQT index %d") +JMESSAGE(JERR_EMPTY_IMAGE, "Empty JPEG image (DNL not supported)") +JMESSAGE(JERR_EMS_READ, "Read from EMS failed") +JMESSAGE(JERR_EMS_WRITE, "Write to EMS failed") +JMESSAGE(JERR_EOI_EXPECTED, "Didn't expect more than one scan") +JMESSAGE(JERR_FILE_READ, "Input file read error") +JMESSAGE(JERR_FILE_WRITE, "Output file write error --- out of disk space?") +JMESSAGE(JERR_FRACT_SAMPLE_NOTIMPL, "Fractional sampling not implemented yet") +JMESSAGE(JERR_HUFF_CLEN_OVERFLOW, "Huffman code size table overflow") +JMESSAGE(JERR_HUFF_MISSING_CODE, "Missing Huffman code table entry") +JMESSAGE(JERR_IMAGE_TOO_BIG, "Maximum supported image dimension is %u pixels") +JMESSAGE(JERR_INPUT_EMPTY, "Empty input file") +JMESSAGE(JERR_INPUT_EOF, "Premature end of input file") +JMESSAGE(JERR_MISMATCHED_QUANT_TABLE, + "Cannot transcode due to multiple use of quantization table %d") +JMESSAGE(JERR_MISSING_DATA, "Scan script does not transmit all data") +JMESSAGE(JERR_MODE_CHANGE, "Invalid color quantization mode change") +JMESSAGE(JERR_NOTIMPL, "Not implemented yet") +JMESSAGE(JERR_NOT_COMPILED, "Requested feature was omitted at compile time") +JMESSAGE(JERR_NO_BACKING_STORE, "Backing store not supported") +JMESSAGE(JERR_NO_HUFF_TABLE, "Huffman table 0x%02x was not defined") +JMESSAGE(JERR_NO_IMAGE, "JPEG datastream contains no image") +JMESSAGE(JERR_NO_QUANT_TABLE, "Quantization table 0x%02x was not defined") +JMESSAGE(JERR_NO_SOI, "Not a JPEG file: starts with 0x%02x 0x%02x") +JMESSAGE(JERR_OUT_OF_MEMORY, "Insufficient memory (case %d)") +JMESSAGE(JERR_QUANT_COMPONENTS, + "Cannot quantize more than %d color components") +JMESSAGE(JERR_QUANT_FEW_COLORS, "Cannot quantize to fewer than %d colors") +JMESSAGE(JERR_QUANT_MANY_COLORS, "Cannot quantize to more than %d colors") +JMESSAGE(JERR_SOF_DUPLICATE, "Invalid JPEG file structure: two SOF markers") +JMESSAGE(JERR_SOF_NO_SOS, "Invalid JPEG file structure: missing SOS marker") +JMESSAGE(JERR_SOF_UNSUPPORTED, "Unsupported JPEG process: SOF type 0x%02x") +JMESSAGE(JERR_SOI_DUPLICATE, "Invalid JPEG file structure: two SOI markers") +JMESSAGE(JERR_SOS_NO_SOF, "Invalid JPEG file structure: SOS before SOF") +JMESSAGE(JERR_TFILE_CREATE, "Failed to create temporary file %s") +JMESSAGE(JERR_TFILE_READ, "Read failed on temporary file") +JMESSAGE(JERR_TFILE_SEEK, "Seek failed on temporary file") +JMESSAGE(JERR_TFILE_WRITE, + "Write failed on temporary file --- out of disk space?") +JMESSAGE(JERR_TOO_LITTLE_DATA, "Application transferred too few scanlines") +JMESSAGE(JERR_UNKNOWN_MARKER, "Unsupported marker type 0x%02x") +JMESSAGE(JERR_VIRTUAL_BUG, "Virtual array controller messed up") +JMESSAGE(JERR_WIDTH_OVERFLOW, "Image too wide for this implementation") +JMESSAGE(JERR_XMS_READ, "Read from XMS failed") +JMESSAGE(JERR_XMS_WRITE, "Write to XMS failed") +JMESSAGE(JMSG_COPYRIGHT, JCOPYRIGHT) +JMESSAGE(JMSG_VERSION, JVERSION) +JMESSAGE(JTRC_16BIT_TABLES, + "Caution: quantization tables are too coarse for baseline JPEG") +JMESSAGE(JTRC_ADOBE, + "Adobe APP14 marker: version %d, flags 0x%04x 0x%04x, transform %d") +JMESSAGE(JTRC_APP0, "Unknown APP0 marker (not JFIF), length %u") +JMESSAGE(JTRC_APP14, "Unknown APP14 marker (not Adobe), length %u") +JMESSAGE(JTRC_DAC, "Define Arithmetic Table 0x%02x: 0x%02x") +JMESSAGE(JTRC_DHT, "Define Huffman Table 0x%02x") +JMESSAGE(JTRC_DQT, "Define Quantization Table %d precision %d") +JMESSAGE(JTRC_DRI, "Define Restart Interval %u") +JMESSAGE(JTRC_EMS_CLOSE, "Freed EMS handle %u") +JMESSAGE(JTRC_EMS_OPEN, "Obtained EMS handle %u") +JMESSAGE(JTRC_EOI, "End Of Image") +JMESSAGE(JTRC_HUFFBITS, " %3d %3d %3d %3d %3d %3d %3d %3d") +JMESSAGE(JTRC_JFIF, "JFIF APP0 marker: version %d.%02d, density %dx%d %d") +JMESSAGE(JTRC_JFIF_BADTHUMBNAILSIZE, + "Warning: thumbnail image size does not match data length %u") +JMESSAGE(JTRC_JFIF_EXTENSION, + "JFIF extension marker: type 0x%02x, length %u") +JMESSAGE(JTRC_JFIF_THUMBNAIL, " with %d x %d thumbnail image") +JMESSAGE(JTRC_MISC_MARKER, "Miscellaneous marker 0x%02x, length %u") +JMESSAGE(JTRC_PARMLESS_MARKER, "Unexpected marker 0x%02x") +JMESSAGE(JTRC_QUANTVALS, " %4u %4u %4u %4u %4u %4u %4u %4u") +JMESSAGE(JTRC_QUANT_3_NCOLORS, "Quantizing to %d = %d*%d*%d colors") +JMESSAGE(JTRC_QUANT_NCOLORS, "Quantizing to %d colors") +JMESSAGE(JTRC_QUANT_SELECTED, "Selected %d colors for quantization") +JMESSAGE(JTRC_RECOVERY_ACTION, "At marker 0x%02x, recovery action %d") +JMESSAGE(JTRC_RST, "RST%d") +JMESSAGE(JTRC_SMOOTH_NOTIMPL, + "Smoothing not supported with nonstandard sampling ratios") +JMESSAGE(JTRC_SOF, "Start Of Frame 0x%02x: width=%u, height=%u, components=%d") +JMESSAGE(JTRC_SOF_COMPONENT, " Component %d: %dhx%dv q=%d") +JMESSAGE(JTRC_SOI, "Start of Image") +JMESSAGE(JTRC_SOS, "Start Of Scan: %d components") +JMESSAGE(JTRC_SOS_COMPONENT, " Component %d: dc=%d ac=%d") +JMESSAGE(JTRC_SOS_PARAMS, " Ss=%d, Se=%d, Ah=%d, Al=%d") +JMESSAGE(JTRC_TFILE_CLOSE, "Closed temporary file %s") +JMESSAGE(JTRC_TFILE_OPEN, "Opened temporary file %s") +JMESSAGE(JTRC_THUMB_JPEG, + "JFIF extension marker: JPEG-compressed thumbnail image, length %u") +JMESSAGE(JTRC_THUMB_PALETTE, + "JFIF extension marker: palette thumbnail image, length %u") +JMESSAGE(JTRC_THUMB_RGB, + "JFIF extension marker: RGB thumbnail image, length %u") +JMESSAGE(JTRC_UNKNOWN_IDS, + "Unrecognized component IDs %d %d %d, assuming YCbCr") +JMESSAGE(JTRC_XMS_CLOSE, "Freed XMS handle %u") +JMESSAGE(JTRC_XMS_OPEN, "Obtained XMS handle %u") +JMESSAGE(JWRN_ADOBE_XFORM, "Unknown Adobe color transform code %d") +JMESSAGE(JWRN_BOGUS_PROGRESSION, + "Inconsistent progression sequence for component %d coefficient %d") +JMESSAGE(JWRN_EXTRANEOUS_DATA, + "Corrupt JPEG data: %u extraneous bytes before marker 0x%02x") +JMESSAGE(JWRN_HIT_MARKER, "Corrupt JPEG data: premature end of data segment") +JMESSAGE(JWRN_HUFF_BAD_CODE, "Corrupt JPEG data: bad Huffman code") +JMESSAGE(JWRN_JFIF_MAJOR, "Warning: unknown JFIF revision number %d.%02d") +JMESSAGE(JWRN_JPEG_EOF, "Premature end of JPEG file") +JMESSAGE(JWRN_MUST_RESYNC, + "Corrupt JPEG data: found marker 0x%02x instead of RST%d") +JMESSAGE(JWRN_NOT_SEQUENTIAL, "Invalid SOS parameters for sequential JPEG") +JMESSAGE(JWRN_TOO_MUCH_DATA, "Application transferred too many scanlines") + +#ifdef JMAKE_ENUM_LIST + + JMSG_LASTMSGCODE +} J_MESSAGE_CODE; + +#undef JMAKE_ENUM_LIST +#endif /* JMAKE_ENUM_LIST */ + +/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */ +#undef JMESSAGE + + +#ifndef JERROR_H +#define JERROR_H + +/* Macros to simplify using the error and trace message stuff */ +/* The first parameter is either type of cinfo pointer */ + +/* Fatal errors (print message and exit) */ +#define ERREXIT(cinfo,code) \ + ((cinfo)->err->msg_code = (code), \ + (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) +#define ERREXIT1(cinfo,code,p1) \ + ((cinfo)->err->msg_code = (code), \ + (cinfo)->err->msg_parm.i[0] = (p1), \ + (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) +#define ERREXIT2(cinfo,code,p1,p2) \ + ((cinfo)->err->msg_code = (code), \ + (cinfo)->err->msg_parm.i[0] = (p1), \ + (cinfo)->err->msg_parm.i[1] = (p2), \ + (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) +#define ERREXIT3(cinfo,code,p1,p2,p3) \ + ((cinfo)->err->msg_code = (code), \ + (cinfo)->err->msg_parm.i[0] = (p1), \ + (cinfo)->err->msg_parm.i[1] = (p2), \ + (cinfo)->err->msg_parm.i[2] = (p3), \ + (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) +#define ERREXIT4(cinfo,code,p1,p2,p3,p4) \ + ((cinfo)->err->msg_code = (code), \ + (cinfo)->err->msg_parm.i[0] = (p1), \ + (cinfo)->err->msg_parm.i[1] = (p2), \ + (cinfo)->err->msg_parm.i[2] = (p3), \ + (cinfo)->err->msg_parm.i[3] = (p4), \ + (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) +#define ERREXITS(cinfo,code,str) \ + ((cinfo)->err->msg_code = (code), \ + strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \ + (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) + +#define MAKESTMT(stuff) do { stuff } while (0) + +/* Nonfatal errors (we can keep going, but the data is probably corrupt) */ +#define WARNMS(cinfo,code) \ + ((cinfo)->err->msg_code = (code), \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) +#define WARNMS1(cinfo,code,p1) \ + ((cinfo)->err->msg_code = (code), \ + (cinfo)->err->msg_parm.i[0] = (p1), \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) +#define WARNMS2(cinfo,code,p1,p2) \ + ((cinfo)->err->msg_code = (code), \ + (cinfo)->err->msg_parm.i[0] = (p1), \ + (cinfo)->err->msg_parm.i[1] = (p2), \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) + +/* Informational/debugging messages */ +#define TRACEMS(cinfo,lvl,code) \ + ((cinfo)->err->msg_code = (code), \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) +#define TRACEMS1(cinfo,lvl,code,p1) \ + ((cinfo)->err->msg_code = (code), \ + (cinfo)->err->msg_parm.i[0] = (p1), \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) +#define TRACEMS2(cinfo,lvl,code,p1,p2) \ + ((cinfo)->err->msg_code = (code), \ + (cinfo)->err->msg_parm.i[0] = (p1), \ + (cinfo)->err->msg_parm.i[1] = (p2), \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) +#define TRACEMS3(cinfo,lvl,code,p1,p2,p3) \ + MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ + _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); \ + (cinfo)->err->msg_code = (code); \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) +#define TRACEMS4(cinfo,lvl,code,p1,p2,p3,p4) \ + MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ + _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ + (cinfo)->err->msg_code = (code); \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) +#define TRACEMS5(cinfo,lvl,code,p1,p2,p3,p4,p5) \ + MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ + _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ + _mp[4] = (p5); \ + (cinfo)->err->msg_code = (code); \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) +#define TRACEMS8(cinfo,lvl,code,p1,p2,p3,p4,p5,p6,p7,p8) \ + MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ + _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ + _mp[4] = (p5); _mp[5] = (p6); _mp[6] = (p7); _mp[7] = (p8); \ + (cinfo)->err->msg_code = (code); \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) +#define TRACEMSS(cinfo,lvl,code,str) \ + ((cinfo)->err->msg_code = (code), \ + strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \ + (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) + +#endif /* JERROR_H */ diff --git a/engine/libs/jmorecfg.h b/engine/libs/jmorecfg.h new file mode 100644 index 000000000..55a37a301 --- /dev/null +++ b/engine/libs/jmorecfg.h @@ -0,0 +1,374 @@ +/* + * jmorecfg.h + * + * Copyright (C) 1991-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains additional configuration options that customize the + * JPEG software for special applications or support machine-dependent + * optimizations. Most users will not need to touch this file. + */ + + +/* + * Define BITS_IN_JSAMPLE as either + * 8 for 8-bit sample values (the usual setting) + * 12 for 12-bit sample values + * Only 8 and 12 are legal data precisions for lossy JPEG according to the + * JPEG standard, and the IJG code does not support anything else! + * We do not support run-time selection of data precision, sorry. + */ + +// mh - disable silly warning +#pragma warning( disable : 4142 ) + +#define BITS_IN_JSAMPLE 8 /* use 8 or 12 */ + + +/* + * Maximum number of components (color channels) allowed in JPEG image. + * To meet the letter of the JPEG spec, set this to 255. However, darn + * few applications need more than 4 channels (maybe 5 for CMYK + alpha + * mask). We recommend 10 as a reasonable compromise; use 4 if you are + * really short on memory. (Each allowed component costs a hundred or so + * bytes of storage, whether actually used in an image or not.) + */ + +#define MAX_COMPONENTS 10 /* maximum number of image components */ + + +/* + * Basic data types. + * You may need to change these if you have a machine with unusual data + * type sizes; for example, "char" not 8 bits, "short" not 16 bits, + * or "long" not 32 bits. We don't care whether "int" is 16 or 32 bits, + * but it had better be at least 16. + */ + +/* Representation of a single sample (pixel element value). + * We frequently allocate large arrays of these, so it's important to keep + * them small. But if you have memory to burn and access to char or short + * arrays is very slow on your hardware, you might want to change these. + */ + +#if BITS_IN_JSAMPLE == 8 +/* JSAMPLE should be the smallest type that will hold the values 0..255. + * You can use a signed char by having GETJSAMPLE mask it with 0xFF. + */ + +#ifdef HAVE_UNSIGNED_CHAR + +typedef unsigned char JSAMPLE; +#define GETJSAMPLE(value) ((int) (value)) + +#else /* not HAVE_UNSIGNED_CHAR */ + +typedef char JSAMPLE; +#ifdef CHAR_IS_UNSIGNED +#define GETJSAMPLE(value) ((int) (value)) +#else +#define GETJSAMPLE(value) ((int) (value) & 0xFF) +#endif /* CHAR_IS_UNSIGNED */ + +#endif /* HAVE_UNSIGNED_CHAR */ + +#define MAXJSAMPLE 255 +#define CENTERJSAMPLE 128 + +#endif /* BITS_IN_JSAMPLE == 8 */ + + +#if BITS_IN_JSAMPLE == 12 +/* JSAMPLE should be the smallest type that will hold the values 0..4095. + * On nearly all machines "short" will do nicely. + */ + +typedef short JSAMPLE; +#define GETJSAMPLE(value) ((int) (value)) + +#define MAXJSAMPLE 4095 +#define CENTERJSAMPLE 2048 + +#endif /* BITS_IN_JSAMPLE == 12 */ + + +/* Representation of a DCT frequency coefficient. + * This should be a signed value of at least 16 bits; "short" is usually OK. + * Again, we allocate large arrays of these, but you can change to int + * if you have memory to burn and "short" is really slow. + */ + +typedef short JCOEF; + + +/* Compressed datastreams are represented as arrays of JOCTET. + * These must be EXACTLY 8 bits wide, at least once they are written to + * external storage. Note that when using the stdio data source/destination + * managers, this is also the data type passed to fread/fwrite. + */ + +#ifdef HAVE_UNSIGNED_CHAR + +typedef unsigned char JOCTET; +#define GETJOCTET(value) (value) + +#else /* not HAVE_UNSIGNED_CHAR */ + +typedef char JOCTET; +#ifdef CHAR_IS_UNSIGNED +#define GETJOCTET(value) (value) +#else +#define GETJOCTET(value) ((value) & 0xFF) +#endif /* CHAR_IS_UNSIGNED */ + +#endif /* HAVE_UNSIGNED_CHAR */ + + +/* These typedefs are used for various table entries and so forth. + * They must be at least as wide as specified; but making them too big + * won't cost a huge amount of memory, so we don't provide special + * extraction code like we did for JSAMPLE. (In other words, these + * typedefs live at a different point on the speed/space tradeoff curve.) + */ + +/* UINT8 must hold at least the values 0..255. */ + +#ifdef HAVE_UNSIGNED_CHAR +typedef unsigned char UINT8; +#else /* not HAVE_UNSIGNED_CHAR */ +#ifdef CHAR_IS_UNSIGNED +typedef char UINT8; +#else /* not CHAR_IS_UNSIGNED */ +typedef short UINT8; +#endif /* CHAR_IS_UNSIGNED */ +#endif /* HAVE_UNSIGNED_CHAR */ + +/* UINT16 must hold at least the values 0..65535. */ + +#ifdef HAVE_UNSIGNED_SHORT +typedef unsigned short UINT16; +#else /* not HAVE_UNSIGNED_SHORT */ +typedef unsigned int UINT16; +#endif /* HAVE_UNSIGNED_SHORT */ + +/* INT16 must hold at least the values -32768..32767. */ + +#ifndef XMD_H /* X11/xmd.h correctly defines INT16 */ +typedef short INT16; +#endif + +/* INT32 must hold at least signed 32-bit values. */ + +#ifndef XMD_H /* X11/xmd.h correctly defines INT32 */ +typedef long INT32; +#endif + +/* Datatype used for image dimensions. The JPEG standard only supports + * images up to 64K*64K due to 16-bit fields in SOF markers. Therefore + * "unsigned int" is sufficient on all machines. However, if you need to + * handle larger images and you don't mind deviating from the spec, you + * can change this datatype. + */ + +typedef unsigned int JDIMENSION; + +#define JPEG_MAX_DIMENSION 65500L /* a tad under 64K to prevent overflows */ + + +/* These macros are used in all function definitions and extern declarations. + * You could modify them if you need to change function linkage conventions; + * in particular, you'll need to do that to make the library a Windows DLL. + * Another application is to make all functions global for use with debuggers + * or code profilers that require it. + */ + +#ifndef JPEG_API +#define JPEG_API +#endif + +/* a function called through method pointers: */ +#define METHODDEF(type) static type JPEG_API +/* a function used only in its module: */ +#define LOCAL(type) static type JPEG_API +/* a function referenced thru EXTERNs: */ +#define GLOBAL(type) type JPEG_API +/* a reference to a GLOBAL function: */ +#define EXTERN(type) extern type JPEG_API + + +/* This macro is used to declare a "method", that is, a function pointer. + * We want to supply prototype parameters if the compiler can cope. + * Note that the arglist parameter must be parenthesized! + * Again, you can customize this if you need special linkage keywords. + */ + +#ifdef HAVE_PROTOTYPES +#define JMETHOD(type,methodname,arglist) type (JPEG_API *methodname) arglist +#else +#define JMETHOD(type,methodname,arglist) type (JPEG_API *methodname) () +#endif + + +/* Here is the pseudo-keyword for declaring pointers that must be "far" + * on 80x86 machines. Most of the specialized coding for 80x86 is handled + * by just saying "FAR *" where such a pointer is needed. In a few places + * explicit coding is needed; see uses of the NEED_FAR_POINTERS symbol. + */ + +// mfah - FAR is already defined in windef.h for glquake so i removed this block +// later - should have read the documentation fully first... sigh... +#ifdef NEED_FAR_POINTERS +#define FAR far +#else +#ifndef FAR +#define FAR +#endif +#endif + + +/* + * On a few systems, type boolean and/or its values FALSE, TRUE may appear + * in standard header files. Or you may have conflicts with application- + * specific header files that you want to include together with these files. + * Defining HAVE_BOOLEAN before including jpeglib.h should make it work. + */ + +#ifndef HAVE_BOOLEAN +typedef int boolean; +#endif +#ifndef FALSE /* in case these macros already exist */ +#define FALSE 0 /* values of boolean */ +#endif +#ifndef TRUE +#define TRUE 1 +#endif + + +/* + * The remaining options affect code selection within the JPEG library, + * but they don't need to be visible to most applications using the library. + * To minimize application namespace pollution, the symbols won't be + * defined unless JPEG_INTERNALS or JPEG_INTERNAL_OPTIONS has been defined. + */ + +#ifdef JPEG_INTERNALS +#define JPEG_INTERNAL_OPTIONS +#endif + +#ifdef JPEG_INTERNAL_OPTIONS + + +/* + * These defines indicate whether to include various optional functions. + * Undefining some of these symbols will produce a smaller but less capable + * library. Note that you can leave certain source files out of the + * compilation/linking process if you've #undef'd the corresponding symbols. + * (You may HAVE to do that if your compiler doesn't like null source files.) + */ + +/* Arithmetic coding is unsupported for legal reasons. Complaints to IBM. */ + +/* Capability options common to encoder and decoder: */ + +#define DCT_ISLOW_SUPPORTED /* slow but accurate integer algorithm */ +#define DCT_IFAST_SUPPORTED /* faster, less accurate integer method */ +#define DCT_FLOAT_SUPPORTED /* floating-point: accurate, fast on fast HW */ + +/* Encoder capability options: */ + +#undef C_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */ +#define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ +#define C_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ +#define ENTROPY_OPT_SUPPORTED /* Optimization of entropy coding parms? */ +/* Note: if you selected 12-bit data precision, it is dangerous to turn off + * ENTROPY_OPT_SUPPORTED. The standard Huffman tables are only good for 8-bit + * precision, so jchuff.c normally uses entropy optimization to compute + * usable tables for higher precision. If you don't want to do optimization, + * you'll have to supply different default Huffman tables. + * The exact same statements apply for progressive JPEG: the default tables + * don't work for progressive mode. (This may get fixed, however.) + */ +#define INPUT_SMOOTHING_SUPPORTED /* Input image smoothing option? */ + +/* Decoder capability options: */ + +#undef D_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */ +#define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ +#define D_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ +#define SAVE_MARKERS_SUPPORTED /* jpeg_save_markers() needed? */ +#define BLOCK_SMOOTHING_SUPPORTED /* Block smoothing? (Progressive only) */ +#define IDCT_SCALING_SUPPORTED /* Output rescaling via IDCT? */ +#undef UPSAMPLE_SCALING_SUPPORTED /* Output rescaling at upsample stage? */ +#define UPSAMPLE_MERGING_SUPPORTED /* Fast path for sloppy upsampling? */ +#define QUANT_1PASS_SUPPORTED /* 1-pass color quantization? */ +#define QUANT_2PASS_SUPPORTED /* 2-pass color quantization? */ + +/* more capability options later, no doubt */ + + +/* + * Ordering of RGB data in scanlines passed to or from the application. + * If your application wants to deal with data in the order B,G,R, just + * change these macros. You can also deal with formats such as R,G,B,X + * (one extra byte per pixel) by changing RGB_PIXELSIZE. Note that changing + * the offsets will also change the order in which colormap data is organized. + * RESTRICTIONS: + * 1. The sample applications cjpeg,djpeg do NOT support modified RGB formats. + * 2. These macros only affect RGB<=>YCbCr color conversion, so they are not + * useful if you are using JPEG color spaces other than YCbCr or grayscale. + * 3. The color quantizer modules will not behave desirably if RGB_PIXELSIZE + * is not 3 (they don't understand about dummy color components!). So you + * can't use color quantization if you change that value. + */ + +#define RGB_RED 0 /* Offset of Red in an RGB scanline element */ +#define RGB_GREEN 1 /* Offset of Green */ +#define RGB_BLUE 2 /* Offset of Blue */ +#define RGB_PIXELSIZE 3 /* JSAMPLEs per RGB scanline element */ + + +/* Definitions for speed-related optimizations. */ + + +/* If your compiler supports inline functions, define INLINE + * as the inline keyword; otherwise define it as empty. + */ + +#ifndef INLINE +#ifdef __GNUC__ /* for instance, GNU C knows about inline */ +#define INLINE __inline__ +#endif +#ifndef INLINE +#define INLINE /* default is to define it as empty */ +#endif +#endif + + +/* On some machines (notably 68000 series) "int" is 32 bits, but multiplying + * two 16-bit shorts is faster than multiplying two ints. Define MULTIPLIER + * as short on such a machine. MULTIPLIER must be at least 16 bits wide. + */ + +#ifndef MULTIPLIER +#define MULTIPLIER int /* type for fastest integer multiply */ +#endif + + +/* FAST_FLOAT should be either float or double, whichever is done faster + * by your compiler. (Note that this type is only used in the floating point + * DCT routines, so it only matters if you've defined DCT_FLOAT_SUPPORTED.) + * Typically, float is faster in ANSI C compilers, while double is faster in + * pre-ANSI compilers (because they insist on converting to double anyway). + * The code below therefore chooses float if we have ANSI-style prototypes. + */ + +#ifndef FAST_FLOAT +#ifdef HAVE_PROTOTYPES +#define FAST_FLOAT float +#else +#define FAST_FLOAT double +#endif +#endif + +#endif /* JPEG_INTERNAL_OPTIONS */ diff --git a/engine/libs/jpeg.lib b/engine/libs/jpeg.lib new file mode 100644 index 000000000..36bd77c65 Binary files /dev/null and b/engine/libs/jpeg.lib differ diff --git a/engine/libs/jpeglib.h b/engine/libs/jpeglib.h new file mode 100644 index 000000000..d1be8ddef --- /dev/null +++ b/engine/libs/jpeglib.h @@ -0,0 +1,1096 @@ +/* + * jpeglib.h + * + * Copyright (C) 1991-1998, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file defines the application interface for the JPEG library. + * Most applications using the library need only include this file, + * and perhaps jerror.h if they want to know the exact error codes. + */ + +#ifndef JPEGLIB_H +#define JPEGLIB_H + +/* + * First we include the configuration files that record how this + * installation of the JPEG library is set up. jconfig.h can be + * generated automatically for many systems. jmorecfg.h contains + * manual configuration options that most people need not worry about. + */ + +#ifndef JCONFIG_INCLUDED /* in case jinclude.h already did */ +#include "jconfig.h" /* widely used configuration options */ +#endif +#include "jmorecfg.h" /* seldom changed options */ + + +/* Version ID for the JPEG library. + * Might be useful for tests like "#if JPEG_LIB_VERSION >= 60". + */ + +#define JPEG_LIB_VERSION 62 /* Version 6b */ + + +/* Various constants determining the sizes of things. + * All of these are specified by the JPEG standard, so don't change them + * if you want to be compatible. + */ + +#define DCTSIZE 8 /* The basic DCT block is 8x8 samples */ +#define DCTSIZE2 64 /* DCTSIZE squared; # of elements in a block */ +#define NUM_QUANT_TBLS 4 /* Quantization tables are numbered 0..3 */ +#define NUM_HUFF_TBLS 4 /* Huffman tables are numbered 0..3 */ +#define NUM_ARITH_TBLS 16 /* Arith-coding tables are numbered 0..15 */ +#define MAX_COMPS_IN_SCAN 4 /* JPEG limit on # of components in one scan */ +#define MAX_SAMP_FACTOR 4 /* JPEG limit on sampling factors */ +/* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard; + * the PostScript DCT filter can emit files with many more than 10 blocks/MCU. + * If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU + * to handle it. We even let you do this from the jconfig.h file. However, + * we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe + * sometimes emits noncompliant files doesn't mean you should too. + */ +#define C_MAX_BLOCKS_IN_MCU 10 /* compressor's limit on blocks per MCU */ +#ifndef D_MAX_BLOCKS_IN_MCU +#define D_MAX_BLOCKS_IN_MCU 10 /* decompressor's limit on blocks per MCU */ +#endif + + +/* Data structures for images (arrays of samples and of DCT coefficients). + * On 80x86 machines, the image arrays are too big for near pointers, + * but the pointer arrays can fit in near memory. + */ + +typedef JSAMPLE FAR *JSAMPROW; /* ptr to one image row of pixel samples. */ +typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */ +typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */ + +typedef JCOEF JBLOCK[DCTSIZE2]; /* one block of coefficients */ +typedef JBLOCK FAR *JBLOCKROW; /* pointer to one row of coefficient blocks */ +typedef JBLOCKROW *JBLOCKARRAY; /* a 2-D array of coefficient blocks */ +typedef JBLOCKARRAY *JBLOCKIMAGE; /* a 3-D array of coefficient blocks */ + +typedef JCOEF FAR *JCOEFPTR; /* useful in a couple of places */ + + +/* Types for JPEG compression parameters and working tables. */ + + +/* DCT coefficient quantization tables. */ + +typedef struct { + /* This array gives the coefficient quantizers in natural array order + * (not the zigzag order in which they are stored in a JPEG DQT marker). + * CAUTION: IJG versions prior to v6a kept this array in zigzag order. + */ + UINT16 quantval[DCTSIZE2]; /* quantization step for each coefficient */ + /* This field is used only during compression. It's initialized FALSE when + * the table is created, and set TRUE when it's been output to the file. + * You could suppress output of a table by setting this to TRUE. + * (See jpeg_suppress_tables for an example.) + */ + boolean sent_table; /* TRUE when table has been output */ +} JQUANT_TBL; + + +/* Huffman coding tables. */ + +typedef struct { + /* These two fields directly represent the contents of a JPEG DHT marker */ + UINT8 bits[17]; /* bits[k] = # of symbols with codes of */ + /* length k bits; bits[0] is unused */ + UINT8 huffval[256]; /* The symbols, in order of incr code length */ + /* This field is used only during compression. It's initialized FALSE when + * the table is created, and set TRUE when it's been output to the file. + * You could suppress output of a table by setting this to TRUE. + * (See jpeg_suppress_tables for an example.) + */ + boolean sent_table; /* TRUE when table has been output */ +} JHUFF_TBL; + + +/* Basic info about one component (color channel). */ + +typedef struct { + /* These values are fixed over the whole image. */ + /* For compression, they must be supplied by parameter setup; */ + /* for decompression, they are read from the SOF marker. */ + int component_id; /* identifier for this component (0..255) */ + int component_index; /* its index in SOF or cinfo->comp_info[] */ + int h_samp_factor; /* horizontal sampling factor (1..4) */ + int v_samp_factor; /* vertical sampling factor (1..4) */ + int quant_tbl_no; /* quantization table selector (0..3) */ + /* These values may vary between scans. */ + /* For compression, they must be supplied by parameter setup; */ + /* for decompression, they are read from the SOS marker. */ + /* The decompressor output side may not use these variables. */ + int dc_tbl_no; /* DC entropy table selector (0..3) */ + int ac_tbl_no; /* AC entropy table selector (0..3) */ + + /* Remaining fields should be treated as private by applications. */ + + /* These values are computed during compression or decompression startup: */ + /* Component's size in DCT blocks. + * Any dummy blocks added to complete an MCU are not counted; therefore + * these values do not depend on whether a scan is interleaved or not. + */ + JDIMENSION width_in_blocks; + JDIMENSION height_in_blocks; + /* Size of a DCT block in samples. Always DCTSIZE for compression. + * For decompression this is the size of the output from one DCT block, + * reflecting any scaling we choose to apply during the IDCT step. + * Values of 1,2,4,8 are likely to be supported. Note that different + * components may receive different IDCT scalings. + */ + int DCT_scaled_size; + /* The downsampled dimensions are the component's actual, unpadded number + * of samples at the main buffer (preprocessing/compression interface), thus + * downsampled_width = ceil(image_width * Hi/Hmax) + * and similarly for height. For decompression, IDCT scaling is included, so + * downsampled_width = ceil(image_width * Hi/Hmax * DCT_scaled_size/DCTSIZE) + */ + JDIMENSION downsampled_width; /* actual width in samples */ + JDIMENSION downsampled_height; /* actual height in samples */ + /* This flag is used only for decompression. In cases where some of the + * components will be ignored (eg grayscale output from YCbCr image), + * we can skip most computations for the unused components. + */ + boolean component_needed; /* do we need the value of this component? */ + + /* These values are computed before starting a scan of the component. */ + /* The decompressor output side may not use these variables. */ + int MCU_width; /* number of blocks per MCU, horizontally */ + int MCU_height; /* number of blocks per MCU, vertically */ + int MCU_blocks; /* MCU_width * MCU_height */ + int MCU_sample_width; /* MCU width in samples, MCU_width*DCT_scaled_size */ + int last_col_width; /* # of non-dummy blocks across in last MCU */ + int last_row_height; /* # of non-dummy blocks down in last MCU */ + + /* Saved quantization table for component; NULL if none yet saved. + * See jdinput.c comments about the need for this information. + * This field is currently used only for decompression. + */ + JQUANT_TBL * quant_table; + + /* Private per-component storage for DCT or IDCT subsystem. */ + void * dct_table; +} jpeg_component_info; + + +/* The script for encoding a multiple-scan file is an array of these: */ + +typedef struct { + int comps_in_scan; /* number of components encoded in this scan */ + int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */ + int Ss, Se; /* progressive JPEG spectral selection parms */ + int Ah, Al; /* progressive JPEG successive approx. parms */ +} jpeg_scan_info; + +/* The decompressor can save APPn and COM markers in a list of these: */ + +typedef struct jpeg_marker_struct FAR * jpeg_saved_marker_ptr; + +struct jpeg_marker_struct { + jpeg_saved_marker_ptr next; /* next in list, or NULL */ + UINT8 marker; /* marker code: JPEG_COM, or JPEG_APP0+n */ + unsigned int original_length; /* # bytes of data in the file */ + unsigned int data_length; /* # bytes of data saved at data[] */ + JOCTET FAR * data; /* the data contained in the marker */ + /* the marker length word is not counted in data_length or original_length */ +}; + +/* Known color spaces. */ + +typedef enum { + JCS_UNKNOWN, /* error/unspecified */ + JCS_GRAYSCALE, /* monochrome */ + JCS_RGB, /* red/green/blue */ + JCS_YCbCr, /* Y/Cb/Cr (also known as YUV) */ + JCS_CMYK, /* C/M/Y/K */ + JCS_YCCK /* Y/Cb/Cr/K */ +} J_COLOR_SPACE; + +/* DCT/IDCT algorithm options. */ + +typedef enum { + JDCT_ISLOW, /* slow but accurate integer algorithm */ + JDCT_IFAST, /* faster, less accurate integer method */ + JDCT_FLOAT /* floating-point: accurate, fast on fast HW */ +} J_DCT_METHOD; + +#ifndef JDCT_DEFAULT /* may be overridden in jconfig.h */ +#define JDCT_DEFAULT JDCT_ISLOW +#endif +#ifndef JDCT_FASTEST /* may be overridden in jconfig.h */ +#define JDCT_FASTEST JDCT_IFAST +#endif + +/* Dithering options for decompression. */ + +typedef enum { + JDITHER_NONE, /* no dithering */ + JDITHER_ORDERED, /* simple ordered dither */ + JDITHER_FS /* Floyd-Steinberg error diffusion dither */ +} J_DITHER_MODE; + + +/* Common fields between JPEG compression and decompression master structs. */ + +#define jpeg_common_fields \ + struct jpeg_error_mgr * err; /* Error handler module */\ + struct jpeg_memory_mgr * mem; /* Memory manager module */\ + struct jpeg_progress_mgr * progress; /* Progress monitor, or NULL if none */\ + void * client_data; /* Available for use by application */\ + boolean is_decompressor; /* So common code can tell which is which */\ + int global_state /* For checking call sequence validity */ + +/* Routines that are to be used by both halves of the library are declared + * to receive a pointer to this structure. There are no actual instances of + * jpeg_common_struct, only of jpeg_compress_struct and jpeg_decompress_struct. + */ +struct jpeg_common_struct { + jpeg_common_fields; /* Fields common to both master struct types */ + /* Additional fields follow in an actual jpeg_compress_struct or + * jpeg_decompress_struct. All three structs must agree on these + * initial fields! (This would be a lot cleaner in C++.) + */ +}; + +typedef struct jpeg_common_struct * j_common_ptr; +typedef struct jpeg_compress_struct * j_compress_ptr; +typedef struct jpeg_decompress_struct * j_decompress_ptr; + + +/* Master record for a compression instance */ + +struct jpeg_compress_struct { + jpeg_common_fields; /* Fields shared with jpeg_decompress_struct */ + + /* Destination for compressed data */ + struct jpeg_destination_mgr * dest; + + /* Description of source image --- these fields must be filled in by + * outer application before starting compression. in_color_space must + * be correct before you can even call jpeg_set_defaults(). + */ + + JDIMENSION image_width; /* input image width */ + JDIMENSION image_height; /* input image height */ + int input_components; /* # of color components in input image */ + J_COLOR_SPACE in_color_space; /* colorspace of input image */ + + double input_gamma; /* image gamma of input image */ + + /* Compression parameters --- these fields must be set before calling + * jpeg_start_compress(). We recommend calling jpeg_set_defaults() to + * initialize everything to reasonable defaults, then changing anything + * the application specifically wants to change. That way you won't get + * burnt when new parameters are added. Also note that there are several + * helper routines to simplify changing parameters. + */ + + int data_precision; /* bits of precision in image data */ + + int num_components; /* # of color components in JPEG image */ + J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ + + jpeg_component_info * comp_info; + /* comp_info[i] describes component that appears i'th in SOF */ + + JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; + /* ptrs to coefficient quantization tables, or NULL if not defined */ + + JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; + JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; + /* ptrs to Huffman coding tables, or NULL if not defined */ + + UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ + UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ + UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ + + int num_scans; /* # of entries in scan_info array */ + const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */ + /* The default value of scan_info is NULL, which causes a single-scan + * sequential JPEG file to be emitted. To create a multi-scan file, + * set num_scans and scan_info to point to an array of scan definitions. + */ + + boolean raw_data_in; /* TRUE=caller supplies downsampled data */ + boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ + boolean optimize_coding; /* TRUE=optimize entropy encoding parms */ + boolean CCIR601_sampling; /* TRUE=first samples are cosited */ + int smoothing_factor; /* 1..100, or 0 for no input smoothing */ + J_DCT_METHOD dct_method; /* DCT algorithm selector */ + + /* The restart interval can be specified in absolute MCUs by setting + * restart_interval, or in MCU rows by setting restart_in_rows + * (in which case the correct restart_interval will be figured + * for each scan). + */ + unsigned int restart_interval; /* MCUs per restart, or 0 for no restart */ + int restart_in_rows; /* if > 0, MCU rows per restart interval */ + + /* Parameters controlling emission of special markers. */ + + boolean write_JFIF_header; /* should a JFIF marker be written? */ + UINT8 JFIF_major_version; /* What to write for the JFIF version number */ + UINT8 JFIF_minor_version; + /* These three values are not used by the JPEG code, merely copied */ + /* into the JFIF APP0 marker. density_unit can be 0 for unknown, */ + /* 1 for dots/inch, or 2 for dots/cm. Note that the pixel aspect */ + /* ratio is defined by X_density/Y_density even when density_unit=0. */ + UINT8 density_unit; /* JFIF code for pixel size units */ + UINT16 X_density; /* Horizontal pixel density */ + UINT16 Y_density; /* Vertical pixel density */ + boolean write_Adobe_marker; /* should an Adobe marker be written? */ + + /* State variable: index of next scanline to be written to + * jpeg_write_scanlines(). Application may use this to control its + * processing loop, e.g., "while (next_scanline < image_height)". + */ + + JDIMENSION next_scanline; /* 0 .. image_height-1 */ + + /* Remaining fields are known throughout compressor, but generally + * should not be touched by a surrounding application. + */ + + /* + * These fields are computed during compression startup + */ + boolean progressive_mode; /* TRUE if scan script uses progressive mode */ + int max_h_samp_factor; /* largest h_samp_factor */ + int max_v_samp_factor; /* largest v_samp_factor */ + + JDIMENSION total_iMCU_rows; /* # of iMCU rows to be input to coef ctlr */ + /* The coefficient controller receives data in units of MCU rows as defined + * for fully interleaved scans (whether the JPEG file is interleaved or not). + * There are v_samp_factor * DCTSIZE sample rows of each component in an + * "iMCU" (interleaved MCU) row. + */ + + /* + * These fields are valid during any one scan. + * They describe the components and MCUs actually appearing in the scan. + */ + int comps_in_scan; /* # of JPEG components in this scan */ + jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; + /* *cur_comp_info[i] describes component that appears i'th in SOS */ + + JDIMENSION MCUs_per_row; /* # of MCUs across the image */ + JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ + + int blocks_in_MCU; /* # of DCT blocks per MCU */ + int MCU_membership[C_MAX_BLOCKS_IN_MCU]; + /* MCU_membership[i] is index in cur_comp_info of component owning */ + /* i'th block in an MCU */ + + int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ + + /* + * Links to compression subobjects (methods and private variables of modules) + */ + struct jpeg_comp_master * master; + struct jpeg_c_main_controller * main; + struct jpeg_c_prep_controller * prep; + struct jpeg_c_coef_controller * coef; + struct jpeg_marker_writer * marker; + struct jpeg_color_converter * cconvert; + struct jpeg_downsampler * downsample; + struct jpeg_forward_dct * fdct; + struct jpeg_entropy_encoder * entropy; + jpeg_scan_info * script_space; /* workspace for jpeg_simple_progression */ + int script_space_size; +}; + + +/* Master record for a decompression instance */ + +struct jpeg_decompress_struct { + jpeg_common_fields; /* Fields shared with jpeg_compress_struct */ + + /* Source of compressed data */ + struct jpeg_source_mgr * src; + + /* Basic description of image --- filled in by jpeg_read_header(). */ + /* Application may inspect these values to decide how to process image. */ + + JDIMENSION image_width; /* nominal image width (from SOF marker) */ + JDIMENSION image_height; /* nominal image height */ + int num_components; /* # of color components in JPEG image */ + J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ + + /* Decompression processing parameters --- these fields must be set before + * calling jpeg_start_decompress(). Note that jpeg_read_header() initializes + * them to default values. + */ + + J_COLOR_SPACE out_color_space; /* colorspace for output */ + + unsigned int scale_num, scale_denom; /* fraction by which to scale image */ + + double output_gamma; /* image gamma wanted in output */ + + boolean buffered_image; /* TRUE=multiple output passes */ + boolean raw_data_out; /* TRUE=downsampled data wanted */ + + J_DCT_METHOD dct_method; /* IDCT algorithm selector */ + boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */ + boolean do_block_smoothing; /* TRUE=apply interblock smoothing */ + + boolean quantize_colors; /* TRUE=colormapped output wanted */ + /* the following are ignored if not quantize_colors: */ + J_DITHER_MODE dither_mode; /* type of color dithering to use */ + boolean two_pass_quantize; /* TRUE=use two-pass color quantization */ + int desired_number_of_colors; /* max # colors to use in created colormap */ + /* these are significant only in buffered-image mode: */ + boolean enable_1pass_quant; /* enable future use of 1-pass quantizer */ + boolean enable_external_quant;/* enable future use of external colormap */ + boolean enable_2pass_quant; /* enable future use of 2-pass quantizer */ + + /* Description of actual output image that will be returned to application. + * These fields are computed by jpeg_start_decompress(). + * You can also use jpeg_calc_output_dimensions() to determine these values + * in advance of calling jpeg_start_decompress(). + */ + + JDIMENSION output_width; /* scaled image width */ + JDIMENSION output_height; /* scaled image height */ + int out_color_components; /* # of color components in out_color_space */ + int output_components; /* # of color components returned */ + /* output_components is 1 (a colormap index) when quantizing colors; + * otherwise it equals out_color_components. + */ + int rec_outbuf_height; /* min recommended height of scanline buffer */ + /* If the buffer passed to jpeg_read_scanlines() is less than this many rows + * high, space and time will be wasted due to unnecessary data copying. + * Usually rec_outbuf_height will be 1 or 2, at most 4. + */ + + /* When quantizing colors, the output colormap is described by these fields. + * The application can supply a colormap by setting colormap non-NULL before + * calling jpeg_start_decompress; otherwise a colormap is created during + * jpeg_start_decompress or jpeg_start_output. + * The map has out_color_components rows and actual_number_of_colors columns. + */ + int actual_number_of_colors; /* number of entries in use */ + JSAMPARRAY colormap; /* The color map as a 2-D pixel array */ + + /* State variables: these variables indicate the progress of decompression. + * The application may examine these but must not modify them. + */ + + /* Row index of next scanline to be read from jpeg_read_scanlines(). + * Application may use this to control its processing loop, e.g., + * "while (output_scanline < output_height)". + */ + JDIMENSION output_scanline; /* 0 .. output_height-1 */ + + /* Current input scan number and number of iMCU rows completed in scan. + * These indicate the progress of the decompressor input side. + */ + int input_scan_number; /* Number of SOS markers seen so far */ + JDIMENSION input_iMCU_row; /* Number of iMCU rows completed */ + + /* The "output scan number" is the notional scan being displayed by the + * output side. The decompressor will not allow output scan/row number + * to get ahead of input scan/row, but it can fall arbitrarily far behind. + */ + int output_scan_number; /* Nominal scan number being displayed */ + JDIMENSION output_iMCU_row; /* Number of iMCU rows read */ + + /* Current progression status. coef_bits[c][i] indicates the precision + * with which component c's DCT coefficient i (in zigzag order) is known. + * It is -1 when no data has yet been received, otherwise it is the point + * transform (shift) value for the most recent scan of the coefficient + * (thus, 0 at completion of the progression). + * This pointer is NULL when reading a non-progressive file. + */ + int (*coef_bits)[DCTSIZE2]; /* -1 or current Al value for each coef */ + + /* Internal JPEG parameters --- the application usually need not look at + * these fields. Note that the decompressor output side may not use + * any parameters that can change between scans. + */ + + /* Quantization and Huffman tables are carried forward across input + * datastreams when processing abbreviated JPEG datastreams. + */ + + JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; + /* ptrs to coefficient quantization tables, or NULL if not defined */ + + JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; + JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; + /* ptrs to Huffman coding tables, or NULL if not defined */ + + /* These parameters are never carried across datastreams, since they + * are given in SOF/SOS markers or defined to be reset by SOI. + */ + + int data_precision; /* bits of precision in image data */ + + jpeg_component_info * comp_info; + /* comp_info[i] describes component that appears i'th in SOF */ + + boolean progressive_mode; /* TRUE if SOFn specifies progressive mode */ + boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ + + UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ + UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ + UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ + + unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */ + + /* These fields record data obtained from optional markers recognized by + * the JPEG library. + */ + boolean saw_JFIF_marker; /* TRUE iff a JFIF APP0 marker was found */ + /* Data copied from JFIF marker; only valid if saw_JFIF_marker is TRUE: */ + UINT8 JFIF_major_version; /* JFIF version number */ + UINT8 JFIF_minor_version; + UINT8 density_unit; /* JFIF code for pixel size units */ + UINT16 X_density; /* Horizontal pixel density */ + UINT16 Y_density; /* Vertical pixel density */ + boolean saw_Adobe_marker; /* TRUE iff an Adobe APP14 marker was found */ + UINT8 Adobe_transform; /* Color transform code from Adobe marker */ + + boolean CCIR601_sampling; /* TRUE=first samples are cosited */ + + /* Aside from the specific data retained from APPn markers known to the + * library, the uninterpreted contents of any or all APPn and COM markers + * can be saved in a list for examination by the application. + */ + jpeg_saved_marker_ptr marker_list; /* Head of list of saved markers */ + + /* Remaining fields are known throughout decompressor, but generally + * should not be touched by a surrounding application. + */ + + /* + * These fields are computed during decompression startup + */ + int max_h_samp_factor; /* largest h_samp_factor */ + int max_v_samp_factor; /* largest v_samp_factor */ + + int min_DCT_scaled_size; /* smallest DCT_scaled_size of any component */ + + JDIMENSION total_iMCU_rows; /* # of iMCU rows in image */ + /* The coefficient controller's input and output progress is measured in + * units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows + * in fully interleaved JPEG scans, but are used whether the scan is + * interleaved or not. We define an iMCU row as v_samp_factor DCT block + * rows of each component. Therefore, the IDCT output contains + * v_samp_factor*DCT_scaled_size sample rows of a component per iMCU row. + */ + + JSAMPLE * sample_range_limit; /* table for fast range-limiting */ + + /* + * These fields are valid during any one scan. + * They describe the components and MCUs actually appearing in the scan. + * Note that the decompressor output side must not use these fields. + */ + int comps_in_scan; /* # of JPEG components in this scan */ + jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; + /* *cur_comp_info[i] describes component that appears i'th in SOS */ + + JDIMENSION MCUs_per_row; /* # of MCUs across the image */ + JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ + + int blocks_in_MCU; /* # of DCT blocks per MCU */ + int MCU_membership[D_MAX_BLOCKS_IN_MCU]; + /* MCU_membership[i] is index in cur_comp_info of component owning */ + /* i'th block in an MCU */ + + int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ + + /* This field is shared between entropy decoder and marker parser. + * It is either zero or the code of a JPEG marker that has been + * read from the data source, but has not yet been processed. + */ + int unread_marker; + + /* + * Links to decompression subobjects (methods, private variables of modules) + */ + struct jpeg_decomp_master * master; + struct jpeg_d_main_controller * main; + struct jpeg_d_coef_controller * coef; + struct jpeg_d_post_controller * post; + struct jpeg_input_controller * inputctl; + struct jpeg_marker_reader * marker; + struct jpeg_entropy_decoder * entropy; + struct jpeg_inverse_dct * idct; + struct jpeg_upsampler * upsample; + struct jpeg_color_deconverter * cconvert; + struct jpeg_color_quantizer * cquantize; +}; + + +/* "Object" declarations for JPEG modules that may be supplied or called + * directly by the surrounding application. + * As with all objects in the JPEG library, these structs only define the + * publicly visible methods and state variables of a module. Additional + * private fields may exist after the public ones. + */ + + +/* Error handler object */ + +struct jpeg_error_mgr { + /* Error exit handler: does not return to caller */ + JMETHOD(void, error_exit, (j_common_ptr cinfo)); + /* Conditionally emit a trace or warning message */ + JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level)); + /* Routine that actually outputs a trace or error message */ + JMETHOD(void, output_message, (j_common_ptr cinfo)); + /* Format a message string for the most recent JPEG error or message */ + JMETHOD(void, format_message, (j_common_ptr cinfo, char * buffer)); +#define JMSG_LENGTH_MAX 200 /* recommended size of format_message buffer */ + /* Reset error state variables at start of a new image */ + JMETHOD(void, reset_error_mgr, (j_common_ptr cinfo)); + + /* The message ID code and any parameters are saved here. + * A message can have one string parameter or up to 8 int parameters. + */ + int msg_code; +#define JMSG_STR_PARM_MAX 80 + union { + int i[8]; + char s[JMSG_STR_PARM_MAX]; + } msg_parm; + + /* Standard state variables for error facility */ + + int trace_level; /* max msg_level that will be displayed */ + + /* For recoverable corrupt-data errors, we emit a warning message, + * but keep going unless emit_message chooses to abort. emit_message + * should count warnings in num_warnings. The surrounding application + * can check for bad data by seeing if num_warnings is nonzero at the + * end of processing. + */ + long num_warnings; /* number of corrupt-data warnings */ + + /* These fields point to the table(s) of error message strings. + * An application can change the table pointer to switch to a different + * message list (typically, to change the language in which errors are + * reported). Some applications may wish to add additional error codes + * that will be handled by the JPEG library error mechanism; the second + * table pointer is used for this purpose. + * + * First table includes all errors generated by JPEG library itself. + * Error code 0 is reserved for a "no such error string" message. + */ + const char * const * jpeg_message_table; /* Library errors */ + int last_jpeg_message; /* Table contains strings 0..last_jpeg_message */ + /* Second table can be added by application (see cjpeg/djpeg for example). + * It contains strings numbered first_addon_message..last_addon_message. + */ + const char * const * addon_message_table; /* Non-library errors */ + int first_addon_message; /* code for first string in addon table */ + int last_addon_message; /* code for last string in addon table */ +}; + + +/* Progress monitor object */ + +struct jpeg_progress_mgr { + JMETHOD(void, progress_monitor, (j_common_ptr cinfo)); + + long pass_counter; /* work units completed in this pass */ + long pass_limit; /* total number of work units in this pass */ + int completed_passes; /* passes completed so far */ + int total_passes; /* total number of passes expected */ +}; + + +/* Data destination object for compression */ + +struct jpeg_destination_mgr { + JOCTET * next_output_byte; /* => next byte to write in buffer */ + size_t free_in_buffer; /* # of byte spaces remaining in buffer */ + + JMETHOD(void, init_destination, (j_compress_ptr cinfo)); + JMETHOD(boolean, empty_output_buffer, (j_compress_ptr cinfo)); + JMETHOD(void, term_destination, (j_compress_ptr cinfo)); +}; + + +/* Data source object for decompression */ + +struct jpeg_source_mgr { + const JOCTET * next_input_byte; /* => next byte to read from buffer */ + size_t bytes_in_buffer; /* # of bytes remaining in buffer */ + + JMETHOD(void, init_source, (j_decompress_ptr cinfo)); + JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo)); + JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes)); + JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired)); + JMETHOD(void, term_source, (j_decompress_ptr cinfo)); +}; + + +/* Memory manager object. + * Allocates "small" objects (a few K total), "large" objects (tens of K), + * and "really big" objects (virtual arrays with backing store if needed). + * The memory manager does not allow individual objects to be freed; rather, + * each created object is assigned to a pool, and whole pools can be freed + * at once. This is faster and more convenient than remembering exactly what + * to free, especially where malloc()/free() are not too speedy. + * NB: alloc routines never return NULL. They exit to error_exit if not + * successful. + */ + +#define JPOOL_PERMANENT 0 /* lasts until master record is destroyed */ +#define JPOOL_IMAGE 1 /* lasts until done with image/datastream */ +#define JPOOL_NUMPOOLS 2 + +typedef struct jvirt_sarray_control * jvirt_sarray_ptr; +typedef struct jvirt_barray_control * jvirt_barray_ptr; + + +struct jpeg_memory_mgr { + /* Method pointers */ + JMETHOD(void *, alloc_small, (j_common_ptr cinfo, int pool_id, + size_t sizeofobject)); + JMETHOD(void FAR *, alloc_large, (j_common_ptr cinfo, int pool_id, + size_t sizeofobject)); + JMETHOD(JSAMPARRAY, alloc_sarray, (j_common_ptr cinfo, int pool_id, + JDIMENSION samplesperrow, + JDIMENSION numrows)); + JMETHOD(JBLOCKARRAY, alloc_barray, (j_common_ptr cinfo, int pool_id, + JDIMENSION blocksperrow, + JDIMENSION numrows)); + JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo, + int pool_id, + boolean pre_zero, + JDIMENSION samplesperrow, + JDIMENSION numrows, + JDIMENSION maxaccess)); + JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo, + int pool_id, + boolean pre_zero, + JDIMENSION blocksperrow, + JDIMENSION numrows, + JDIMENSION maxaccess)); + JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo)); + JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo, + jvirt_sarray_ptr ptr, + JDIMENSION start_row, + JDIMENSION num_rows, + boolean writable)); + JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo, + jvirt_barray_ptr ptr, + JDIMENSION start_row, + JDIMENSION num_rows, + boolean writable)); + JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id)); + JMETHOD(void, self_destruct, (j_common_ptr cinfo)); + + /* Limit on memory allocation for this JPEG object. (Note that this is + * merely advisory, not a guaranteed maximum; it only affects the space + * used for virtual-array buffers.) May be changed by outer application + * after creating the JPEG object. + */ + long max_memory_to_use; + + /* Maximum allocation request accepted by alloc_large. */ + long max_alloc_chunk; +}; + + +/* Routine signature for application-supplied marker processing methods. + * Need not pass marker code since it is stored in cinfo->unread_marker. + */ +typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo)); + + +/* Declarations for routines called by application. + * The JPP macro hides prototype parameters from compilers that can't cope. + * Note JPP requires double parentheses. + */ + +#ifdef HAVE_PROTOTYPES +#define JPP(arglist) arglist +#else +#define JPP(arglist) () +#endif + + +/* Short forms of external names for systems with brain-damaged linkers. + * We shorten external names to be unique in the first six letters, which + * is good enough for all known systems. + * (If your compiler itself needs names to be unique in less than 15 + * characters, you are out of luck. Get a better compiler.) + */ + +#ifdef NEED_SHORT_EXTERNAL_NAMES +#define jpeg_std_error jStdError +#define jpeg_CreateCompress jCreaCompress +#define jpeg_CreateDecompress jCreaDecompress +#define jpeg_destroy_compress jDestCompress +#define jpeg_destroy_decompress jDestDecompress +#define jpeg_stdio_dest jStdDest +#define jpeg_stdio_src jStdSrc +#define jpeg_set_defaults jSetDefaults +#define jpeg_set_colorspace jSetColorspace +#define jpeg_default_colorspace jDefColorspace +#define jpeg_set_quality jSetQuality +#define jpeg_set_linear_quality jSetLQuality +#define jpeg_add_quant_table jAddQuantTable +#define jpeg_quality_scaling jQualityScaling +#define jpeg_simple_progression jSimProgress +#define jpeg_suppress_tables jSuppressTables +#define jpeg_alloc_quant_table jAlcQTable +#define jpeg_alloc_huff_table jAlcHTable +#define jpeg_start_compress jStrtCompress +#define jpeg_write_scanlines jWrtScanlines +#define jpeg_finish_compress jFinCompress +#define jpeg_write_raw_data jWrtRawData +#define jpeg_write_marker jWrtMarker +#define jpeg_write_m_header jWrtMHeader +#define jpeg_write_m_byte jWrtMByte +#define jpeg_write_tables jWrtTables +#define jpeg_read_header jReadHeader +#define jpeg_start_decompress jStrtDecompress +#define jpeg_read_scanlines jReadScanlines +#define jpeg_finish_decompress jFinDecompress +#define jpeg_read_raw_data jReadRawData +#define jpeg_has_multiple_scans jHasMultScn +#define jpeg_start_output jStrtOutput +#define jpeg_finish_output jFinOutput +#define jpeg_input_complete jInComplete +#define jpeg_new_colormap jNewCMap +#define jpeg_consume_input jConsumeInput +#define jpeg_calc_output_dimensions jCalcDimensions +#define jpeg_save_markers jSaveMarkers +#define jpeg_set_marker_processor jSetMarker +#define jpeg_read_coefficients jReadCoefs +#define jpeg_write_coefficients jWrtCoefs +#define jpeg_copy_critical_parameters jCopyCrit +#define jpeg_abort_compress jAbrtCompress +#define jpeg_abort_decompress jAbrtDecompress +#define jpeg_abort jAbort +#define jpeg_destroy jDestroy +#define jpeg_resync_to_restart jResyncRestart +#endif /* NEED_SHORT_EXTERNAL_NAMES */ + + +/* Default error-management setup */ +EXTERN(struct jpeg_error_mgr *) jpeg_std_error + JPP((struct jpeg_error_mgr * err)); + +/* Initialization of JPEG compression objects. + * jpeg_create_compress() and jpeg_create_decompress() are the exported + * names that applications should call. These expand to calls on + * jpeg_CreateCompress and jpeg_CreateDecompress with additional information + * passed for version mismatch checking. + * NB: you must set up the error-manager BEFORE calling jpeg_create_xxx. + */ +#define jpeg_create_compress(cinfo) \ + jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \ + (size_t) sizeof(struct jpeg_compress_struct)) +#define jpeg_create_decompress(cinfo) \ + jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \ + (size_t) sizeof(struct jpeg_decompress_struct)) +EXTERN(void) jpeg_CreateCompress JPP((j_compress_ptr cinfo, + int version, size_t structsize)); +EXTERN(void) jpeg_CreateDecompress JPP((j_decompress_ptr cinfo, + int version, size_t structsize)); +/* Destruction of JPEG compression objects */ +EXTERN(void) jpeg_destroy_compress JPP((j_compress_ptr cinfo)); +EXTERN(void) jpeg_destroy_decompress JPP((j_decompress_ptr cinfo)); + +/* Standard data source and destination managers: stdio streams. */ +/* Caller is responsible for opening the file before and closing after. */ +EXTERN(void) jpeg_stdio_dest JPP((j_compress_ptr cinfo, FILE * outfile)); +EXTERN(void) jpeg_stdio_src JPP((j_decompress_ptr cinfo, FILE * infile)); + +/* Default parameter setup for compression */ +EXTERN(void) jpeg_set_defaults JPP((j_compress_ptr cinfo)); +/* Compression parameter setup aids */ +EXTERN(void) jpeg_set_colorspace JPP((j_compress_ptr cinfo, + J_COLOR_SPACE colorspace)); +EXTERN(void) jpeg_default_colorspace JPP((j_compress_ptr cinfo)); +EXTERN(void) jpeg_set_quality JPP((j_compress_ptr cinfo, int quality, + boolean force_baseline)); +EXTERN(void) jpeg_set_linear_quality JPP((j_compress_ptr cinfo, + int scale_factor, + boolean force_baseline)); +EXTERN(void) jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl, + const unsigned int *basic_table, + int scale_factor, + boolean force_baseline)); +EXTERN(int) jpeg_quality_scaling JPP((int quality)); +EXTERN(void) jpeg_simple_progression JPP((j_compress_ptr cinfo)); +EXTERN(void) jpeg_suppress_tables JPP((j_compress_ptr cinfo, + boolean suppress)); +EXTERN(JQUANT_TBL *) jpeg_alloc_quant_table JPP((j_common_ptr cinfo)); +EXTERN(JHUFF_TBL *) jpeg_alloc_huff_table JPP((j_common_ptr cinfo)); + +/* Main entry points for compression */ +EXTERN(void) jpeg_start_compress JPP((j_compress_ptr cinfo, + boolean write_all_tables)); +EXTERN(JDIMENSION) jpeg_write_scanlines JPP((j_compress_ptr cinfo, + JSAMPARRAY scanlines, + JDIMENSION num_lines)); +EXTERN(void) jpeg_finish_compress JPP((j_compress_ptr cinfo)); + +/* Replaces jpeg_write_scanlines when writing raw downsampled data. */ +EXTERN(JDIMENSION) jpeg_write_raw_data JPP((j_compress_ptr cinfo, + JSAMPIMAGE data, + JDIMENSION num_lines)); + +/* Write a special marker. See libjpeg.doc concerning safe usage. */ +EXTERN(void) jpeg_write_marker + JPP((j_compress_ptr cinfo, int marker, + const JOCTET * dataptr, unsigned int datalen)); +/* Same, but piecemeal. */ +EXTERN(void) jpeg_write_m_header + JPP((j_compress_ptr cinfo, int marker, unsigned int datalen)); +EXTERN(void) jpeg_write_m_byte + JPP((j_compress_ptr cinfo, int val)); + +/* Alternate compression function: just write an abbreviated table file */ +EXTERN(void) jpeg_write_tables JPP((j_compress_ptr cinfo)); + +/* Decompression startup: read start of JPEG datastream to see what's there */ +EXTERN(int) jpeg_read_header JPP((j_decompress_ptr cinfo, + boolean require_image)); +/* Return value is one of: */ +#define JPEG_SUSPENDED 0 /* Suspended due to lack of input data */ +#define JPEG_HEADER_OK 1 /* Found valid image datastream */ +#define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */ +/* If you pass require_image = TRUE (normal case), you need not check for + * a TABLES_ONLY return code; an abbreviated file will cause an error exit. + * JPEG_SUSPENDED is only possible if you use a data source module that can + * give a suspension return (the stdio source module doesn't). + */ + +/* Main entry points for decompression */ +EXTERN(boolean) jpeg_start_decompress JPP((j_decompress_ptr cinfo)); +EXTERN(JDIMENSION) jpeg_read_scanlines JPP((j_decompress_ptr cinfo, + JSAMPARRAY scanlines, + JDIMENSION max_lines)); +EXTERN(boolean) jpeg_finish_decompress JPP((j_decompress_ptr cinfo)); + +/* Replaces jpeg_read_scanlines when reading raw downsampled data. */ +EXTERN(JDIMENSION) jpeg_read_raw_data JPP((j_decompress_ptr cinfo, + JSAMPIMAGE data, + JDIMENSION max_lines)); + +/* Additional entry points for buffered-image mode. */ +EXTERN(boolean) jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo)); +EXTERN(boolean) jpeg_start_output JPP((j_decompress_ptr cinfo, + int scan_number)); +EXTERN(boolean) jpeg_finish_output JPP((j_decompress_ptr cinfo)); +EXTERN(boolean) jpeg_input_complete JPP((j_decompress_ptr cinfo)); +EXTERN(void) jpeg_new_colormap JPP((j_decompress_ptr cinfo)); +EXTERN(int) jpeg_consume_input JPP((j_decompress_ptr cinfo)); +/* Return value is one of: */ +/* #define JPEG_SUSPENDED 0 Suspended due to lack of input data */ +#define JPEG_REACHED_SOS 1 /* Reached start of new scan */ +#define JPEG_REACHED_EOI 2 /* Reached end of image */ +#define JPEG_ROW_COMPLETED 3 /* Completed one iMCU row */ +#define JPEG_SCAN_COMPLETED 4 /* Completed last iMCU row of a scan */ + +/* Precalculate output dimensions for current decompression parameters. */ +EXTERN(void) jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo)); + +/* Control saving of COM and APPn markers into marker_list. */ +EXTERN(void) jpeg_save_markers + JPP((j_decompress_ptr cinfo, int marker_code, + unsigned int length_limit)); + +/* Install a special processing method for COM or APPn markers. */ +EXTERN(void) jpeg_set_marker_processor + JPP((j_decompress_ptr cinfo, int marker_code, + jpeg_marker_parser_method routine)); + +/* Read or write raw DCT coefficients --- useful for lossless transcoding. */ +EXTERN(jvirt_barray_ptr *) jpeg_read_coefficients JPP((j_decompress_ptr cinfo)); +EXTERN(void) jpeg_write_coefficients JPP((j_compress_ptr cinfo, + jvirt_barray_ptr * coef_arrays)); +EXTERN(void) jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo, + j_compress_ptr dstinfo)); + +/* If you choose to abort compression or decompression before completing + * jpeg_finish_(de)compress, then you need to clean up to release memory, + * temporary files, etc. You can just call jpeg_destroy_(de)compress + * if you're done with the JPEG object, but if you want to clean it up and + * reuse it, call this: + */ +EXTERN(void) jpeg_abort_compress JPP((j_compress_ptr cinfo)); +EXTERN(void) jpeg_abort_decompress JPP((j_decompress_ptr cinfo)); + +/* Generic versions of jpeg_abort and jpeg_destroy that work on either + * flavor of JPEG object. These may be more convenient in some places. + */ +EXTERN(void) jpeg_abort JPP((j_common_ptr cinfo)); +EXTERN(void) jpeg_destroy JPP((j_common_ptr cinfo)); + +/* Default restart-marker-resync procedure for use by data source modules */ +EXTERN(boolean) jpeg_resync_to_restart JPP((j_decompress_ptr cinfo, + int desired)); + + +/* These marker codes are exported since applications and data source modules + * are likely to want to use them. + */ + +#define JPEG_RST0 0xD0 /* RST0 marker code */ +#define JPEG_EOI 0xD9 /* EOI marker code */ +#define JPEG_APP0 0xE0 /* APP0 marker code */ +#define JPEG_COM 0xFE /* COM marker code */ + + +/* If we have a brain-damaged compiler that emits warnings (or worse, errors) + * for structure definitions that are never filled in, keep it quiet by + * supplying dummy definitions for the various substructures. + */ + +#ifdef INCOMPLETE_TYPES_BROKEN +#ifndef JPEG_INTERNALS /* will be defined in jpegint.h */ +struct jvirt_sarray_control { long dummy; }; +struct jvirt_barray_control { long dummy; }; +struct jpeg_comp_master { long dummy; }; +struct jpeg_c_main_controller { long dummy; }; +struct jpeg_c_prep_controller { long dummy; }; +struct jpeg_c_coef_controller { long dummy; }; +struct jpeg_marker_writer { long dummy; }; +struct jpeg_color_converter { long dummy; }; +struct jpeg_downsampler { long dummy; }; +struct jpeg_forward_dct { long dummy; }; +struct jpeg_entropy_encoder { long dummy; }; +struct jpeg_decomp_master { long dummy; }; +struct jpeg_d_main_controller { long dummy; }; +struct jpeg_d_coef_controller { long dummy; }; +struct jpeg_d_post_controller { long dummy; }; +struct jpeg_input_controller { long dummy; }; +struct jpeg_marker_reader { long dummy; }; +struct jpeg_entropy_decoder { long dummy; }; +struct jpeg_inverse_dct { long dummy; }; +struct jpeg_upsampler { long dummy; }; +struct jpeg_color_deconverter { long dummy; }; +struct jpeg_color_quantizer { long dummy; }; +#endif /* JPEG_INTERNALS */ +#endif /* INCOMPLETE_TYPES_BROKEN */ + + +/* + * The JPEG library modules define JPEG_INTERNALS before including this file. + * The internal structure declarations are read only when that is true. + * Applications using the library should not include jpegint.h, but may wish + * to include jerror.h. + */ + +#ifdef JPEG_INTERNALS +#include "jpegint.h" /* fetch private declarations */ +#include "jerror.h" /* fetch error codes too */ +#endif + +#endif /* JPEGLIB_H */ diff --git a/engine/libs/libpng.lib b/engine/libs/libpng.lib new file mode 100644 index 000000000..2e8e29c57 Binary files /dev/null and b/engine/libs/libpng.lib differ diff --git a/engine/libs/png.h b/engine/libs/png.h new file mode 100644 index 000000000..365c80b39 --- /dev/null +++ b/engine/libs/png.h @@ -0,0 +1,3278 @@ +/* png.h - header file for PNG reference library + * + * libpng version 1.2.4 - July 8, 2002 + * Copyright (c) 1998-2002 Glenn Randers-Pehrson + * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) + * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) + * + * Authors and maintainers: + * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat + * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger + * libpng versions 0.97, January 1998, through 1.2.4 - July 8, 2002: Glenn + * See also "Contributing Authors", below. + * + * Note about libpng version numbers: + * + * Due to various miscommunications, unforeseen code incompatibilities + * and occasional factors outside the authors' control, version numbering + * on the library has not always been consistent and straightforward. + * The following table summarizes matters since version 0.89c, which was + * the first widely used release: + * + * source png.h png.h shared-lib + * version string int version + * ------- ------ ----- ---------- + * 0.89c "1.0 beta 3" 0.89 89 1.0.89 + * 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90] + * 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95] + * 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96] + * 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97] + * 0.97c 0.97 97 2.0.97 + * 0.98 0.98 98 2.0.98 + * 0.99 0.99 98 2.0.99 + * 0.99a-m 0.99 99 2.0.99 + * 1.00 1.00 100 2.1.0 [100 should be 10000] + * 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000] + * 1.0.1 png.h string is 10001 2.1.0 + * 1.0.1a-e identical to the 10002 from here on, the shared library + * 1.0.2 source version) 10002 is 2.V where V is the source code + * 1.0.2a-b 10003 version, except as noted. + * 1.0.3 10003 + * 1.0.3a-d 10004 + * 1.0.4 10004 + * 1.0.4a-f 10005 + * 1.0.5 (+ 2 patches) 10005 + * 1.0.5a-d 10006 + * 1.0.5e-r 10100 (not source compatible) + * 1.0.5s-v 10006 (not binary compatible) + * 1.0.6 (+ 3 patches) 10006 (still binary incompatible) + * 1.0.6d-f 10007 (still binary incompatible) + * 1.0.6g 10007 + * 1.0.6h 10007 10.6h (testing xy.z so-numbering) + * 1.0.6i 10007 10.6i + * 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0) + * 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible) + * 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible) + * 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible) + * 1.0.7 1 10007 (still compatible) + * 1.0.8beta1-4 1 10008 2.1.0.8beta1-4 + * 1.0.8rc1 1 10008 2.1.0.8rc1 + * 1.0.8 1 10008 2.1.0.8 + * 1.0.9beta1-6 1 10009 2.1.0.9beta1-6 + * 1.0.9rc1 1 10009 2.1.0.9rc1 + * 1.0.9beta7-10 1 10009 2.1.0.9beta7-10 + * 1.0.9rc2 1 10009 2.1.0.9rc2 + * 1.0.9 1 10009 2.1.0.9 + * 1.0.10beta1 1 10010 2.1.0.10beta1 + * 1.0.10rc1 1 10010 2.1.0.10rc1 + * 1.0.10 1 10010 2.1.0.10 + * 1.0.11beta1-3 1 10011 2.1.0.11beta1-3 + * 1.0.11rc1 1 10011 2.1.0.11rc1 + * 1.0.11 1 10011 2.1.0.11 + * 1.0.12beta1-2 2 10012 2.1.0.12beta1-2 + * 1.0.12rc1 2 10012 2.1.0.12rc1 + * 1.0.12 2 10012 2.1.0.12 + * 1.1.0a-f - 10100 2.1.1.0a-f (branch abandoned) + * 1.2.0beta1-2 2 10200 2.1.2.0beta1-2 + * 1.2.0beta3-5 3 10200 3.1.2.0beta3-5 + * 1.2.0rc1 3 10200 3.1.2.0rc1 + * 1.2.0 3 10200 3.1.2.0 + * 1.2.1beta1-4 3 10201 3.1.2.1beta1-4 + * 1.2.1rc1-2 3 10201 3.1.2.1rc1-2 + * 1.2.1 3 10201 3.1.2.1 + * 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6 + * 1.0.13beta1 10 10013 10.so.0.1.0.13beta1 + * 1.0.13rc1 10 10013 10.so.0.1.0.13rc1 + * 1.2.2rc1 12 10202 12.so.0.1.2.2rc1 + * 1.0.13 10 10013 10.so.0.1.0.13 + * 1.2.2 12 10202 12.so.0.1.2.2 + * 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6 + * 1.2.3 12 10203 12.so.0.1.2.3 + * 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3 + * 1.0.14rc1 13 10014 10.so.0.1.0.14rc1 + * 1.2.4rc1 13 10204 12.so.0.1.2.4rc1 + * 1.0.14 10 10014 10.so.0.1.0.14 + * 1.2.4 13 10204 12.so.0.1.2.4 + * + * Henceforth the source version will match the shared-library major + * and minor numbers; the shared-library major version number will be + * used for changes in backward compatibility, as it is intended. The + * PNG_LIBPNG_VER macro, which is not used within libpng but is available + * for applications, is an unsigned integer of the form xyyzz corresponding + * to the source version x.y.z (leading zeros in y and z). Beta versions + * were given the previous public release number plus a letter, until + * version 1.0.6j; from then on they were given the upcoming public + * release number plus "betaNN" or "rcN". + * + * Binary incompatibility exists only when applications make direct access + * to the info_ptr or png_ptr members through png.h, and the compiled + * application is loaded with a different version of the library. + * + * DLLNUM will change each time there are forward or backward changes + * in binary compatibility (e.g., when a new feature is added). + * + * See libpng.txt or libpng.3 for more information. The PNG specification + * is available as RFC 2083 + * and as a W3C Recommendation + */ + +/* + * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: + * + * If you modify libpng you may insert additional notices immediately following + * this sentence. + * + * libpng versions 1.0.7, July 1, 2000, through 1.2.4, July 8, 2002, are + * Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are + * distributed according to the same disclaimer and license as libpng-1.0.6 + * with the following individuals added to the list of Contributing Authors + * + * Simon-Pierre Cadieux + * Eric S. Raymond + * Gilles Vollant + * + * and with the following additions to the disclaimer: + * + * There is no warranty against interference with your enjoyment of the + * library or against infringement. There is no warranty that our + * efforts or the library will fulfill any of your particular purposes + * or needs. This library is provided with all faults, and the entire + * risk of satisfactory quality, performance, accuracy, and effort is with + * the user. + * + * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are + * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson + * Distributed according to the same disclaimer and license as libpng-0.96, + * with the following individuals added to the list of Contributing Authors: + * + * Tom Lane + * Glenn Randers-Pehrson + * Willem van Schaik + * + * libpng versions 0.89, June 1996, through 0.96, May 1997, are + * Copyright (c) 1996, 1997 Andreas Dilger + * Distributed according to the same disclaimer and license as libpng-0.88, + * with the following individuals added to the list of Contributing Authors: + * + * John Bowler + * Kevin Bracey + * Sam Bushell + * Magnus Holmgren + * Greg Roelofs + * Tom Tanner + * + * libpng versions 0.5, May 1995, through 0.88, January 1996, are + * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. + * + * For the purposes of this copyright and license, "Contributing Authors" + * is defined as the following set of individuals: + * + * Andreas Dilger + * Dave Martindale + * Guy Eric Schalnat + * Paul Schmidt + * Tim Wegner + * + * The PNG Reference Library is supplied "AS IS". The Contributing Authors + * and Group 42, Inc. disclaim all warranties, expressed or implied, + * including, without limitation, the warranties of merchantability and of + * fitness for any purpose. The Contributing Authors and Group 42, Inc. + * assume no liability for direct, indirect, incidental, special, exemplary, + * or consequential damages, which may result from the use of the PNG + * Reference Library, even if advised of the possibility of such damage. + * + * Permission is hereby granted to use, copy, modify, and distribute this + * source code, or portions hereof, for any purpose, without fee, subject + * to the following restrictions: + * + * 1. The origin of this source code must not be misrepresented. + * + * 2. Altered versions must be plainly marked as such and + * must not be misrepresented as being the original source. + * + * 3. This Copyright notice may not be removed or altered from + * any source or altered source distribution. + * + * The Contributing Authors and Group 42, Inc. specifically permit, without + * fee, and encourage the use of this source code as a component to + * supporting the PNG file format in commercial products. If you use this + * source code in a product, acknowledgment is not required but would be + * appreciated. + */ + +/* + * A "png_get_copyright" function is available, for convenient use in "about" + * boxes and the like: + * + * printf("%s",png_get_copyright(NULL)); + * + * Also, the PNG logo (in PNG format, of course) is supplied in the + * files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31). + */ + +/* + * Libpng is OSI Certified Open Source Software. OSI Certified is a + * certification mark of the Open Source Initiative. + */ + +/* + * The contributing authors would like to thank all those who helped + * with testing, bug fixes, and patience. This wouldn't have been + * possible without all of you. + * + * Thanks to Frank J. T. Wojcik for helping with the documentation. + */ + +/* + * Y2K compliance in libpng: + * ========================= + * + * July 8, 2002 + * + * Since the PNG Development group is an ad-hoc body, we can't make + * an official declaration. + * + * This is your unofficial assurance that libpng from version 0.71 and + * upward through 1.2.4 are Y2K compliant. It is my belief that earlier + * versions were also Y2K compliant. + * + * Libpng only has three year fields. One is a 2-byte unsigned integer + * that will hold years up to 65535. The other two hold the date in text + * format, and will hold years up to 9999. + * + * The integer is + * "png_uint_16 year" in png_time_struct. + * + * The strings are + * "png_charp time_buffer" in png_struct and + * "near_time_buffer", which is a local character string in png.c. + * + * There are seven time-related functions: + * png.c: png_convert_to_rfc_1123() in png.c + * (formerly png_convert_to_rfc_1152() in error) + * png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c + * png_convert_from_time_t() in pngwrite.c + * png_get_tIME() in pngget.c + * png_handle_tIME() in pngrutil.c, called in pngread.c + * png_set_tIME() in pngset.c + * png_write_tIME() in pngwutil.c, called in pngwrite.c + * + * All handle dates properly in a Y2K environment. The + * png_convert_from_time_t() function calls gmtime() to convert from system + * clock time, which returns (year - 1900), which we properly convert to + * the full 4-digit year. There is a possibility that applications using + * libpng are not passing 4-digit years into the png_convert_to_rfc_1123() + * function, or that they are incorrectly passing only a 2-digit year + * instead of "year - 1900" into the png_convert_from_struct_tm() function, + * but this is not under our control. The libpng documentation has always + * stated that it works with 4-digit years, and the APIs have been + * documented as such. + * + * The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned + * integer to hold the year, and can hold years as large as 65535. + * + * zlib, upon which libpng depends, is also Y2K compliant. It contains + * no date-related code. + * + * Glenn Randers-Pehrson + * libpng maintainer + * PNG Development Group + */ + +#ifndef PNG_H +#define PNG_H + +/* This is not the place to learn how to use libpng. The file libpng.txt + * describes how to use libpng, and the file example.c summarizes it + * with some code on which to build. This file is useful for looking + * at the actual function definitions and structure components. + */ + +/* Version information for png.h - this should match the version in png.c */ +#define PNG_LIBPNG_VER_STRING "1.2.4" + +#define PNG_LIBPNG_VER_SONUM 0 +#define PNG_LIBPNG_VER_DLLNUM %DLLNUM% + +/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ +#define PNG_LIBPNG_VER_MAJOR 1 +#define PNG_LIBPNG_VER_MINOR 2 +#define PNG_LIBPNG_VER_RELEASE 4 +/* This should match the numeric part of the final component of + * PNG_LIBPNG_VER_STRING, omitting any leading zero: */ + +#define PNG_LIBPNG_VER_BUILD 0 + +#define PNG_LIBPNG_BUILD_ALPHA 1 +#define PNG_LIBPNG_BUILD_BETA 2 +#define PNG_LIBPNG_BUILD_RC 3 +#define PNG_LIBPNG_BUILD_STABLE 4 +#define PNG_LIBPNG_BUILD_TYPEMASK 7 +#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with STABLE only */ +#define PNG_LIBPNG_BUILD_TYPE 4 + +/* Careful here. At one time, Guy wanted to use 082, but that would be octal. + * We must not include leading zeros. + * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only + * version 1.0.0 was mis-numbered 100 instead of 10000). From + * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */ +#define PNG_LIBPNG_VER 10204 /* 1.2.4 */ + +#ifndef PNG_VERSION_INFO_ONLY + +/* include the compression library's header */ +#include "zlib.h" + +/* include all user configurable info, including optional assembler routines */ +#include "pngconf.h" + +/* Inhibit C++ name-mangling for libpng functions but not for system calls. */ +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +/* This file is arranged in several sections. The first section contains + * structure and type definitions. The second section contains the external + * library functions, while the third has the internal library functions, + * which applications aren't expected to use directly. + */ + +#ifndef PNG_NO_TYPECAST_NULL +#define int_p_NULL (int *)NULL +#define png_bytep_NULL (png_bytep)NULL +#define png_bytepp_NULL (png_bytepp)NULL +#define png_doublep_NULL (png_doublep)NULL +#define png_error_ptr_NULL (png_error_ptr)NULL +#define png_flush_ptr_NULL (png_flush_ptr)NULL +#define png_free_ptr_NULL (png_free_ptr)NULL +#define png_infopp_NULL (png_infopp)NULL +#define png_malloc_ptr_NULL (png_malloc_ptr)NULL +#define png_read_status_ptr_NULL (png_read_status_ptr)NULL +#define png_rw_ptr_NULL (png_rw_ptr)NULL +#define png_structp_NULL (png_structp)NULL +#define png_uint_16p_NULL (png_uint_16p)NULL +#define png_voidp_NULL (png_voidp)NULL +#define png_write_status_ptr_NULL (png_write_status_ptr)NULL +#else +#define int_p_NULL NULL +#define png_bytep_NULL NULL +#define png_bytepp_NULL NULL +#define png_doublep_NULL NULL +#define png_error_ptr_NULL NULL +#define png_flush_ptr_NULL NULL +#define png_free_ptr_NULL NULL +#define png_infopp_NULL NULL +#define png_malloc_ptr_NULL NULL +#define png_read_status_ptr_NULL NULL +#define png_rw_ptr_NULL NULL +#define png_structp_NULL NULL +#define png_uint_16p_NULL NULL +#define png_voidp_NULL NULL +#define png_write_status_ptr_NULL NULL +#endif + +/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */ +#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN) +/* Version information for C files, stored in png.c. This had better match + * the version above. + */ +#ifdef PNG_USE_GLOBAL_ARRAYS +PNG_EXPORT_VAR (const char) png_libpng_ver[18]; + /* need room for 99.99.99beta99z */ +#else +#define png_libpng_ver png_get_header_ver(NULL) +#endif + +#ifdef PNG_USE_GLOBAL_ARRAYS +/* This was removed in version 1.0.5c */ +/* Structures to facilitate easy interlacing. See png.c for more details */ +PNG_EXPORT_VAR (const int FARDATA) png_pass_start[7]; +PNG_EXPORT_VAR (const int FARDATA) png_pass_inc[7]; +PNG_EXPORT_VAR (const int FARDATA) png_pass_ystart[7]; +PNG_EXPORT_VAR (const int FARDATA) png_pass_yinc[7]; +PNG_EXPORT_VAR (const int FARDATA) png_pass_mask[7]; +PNG_EXPORT_VAR (const int FARDATA) png_pass_dsp_mask[7]; +#ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW +PNG_EXPORT_VAR (const int FARDATA) png_pass_width[7]; +#endif +/* This isn't currently used. If you need it, see png.c for more details. +PNG_EXPORT_VAR (const int FARDATA) png_pass_height[7]; +*/ +#endif + +#endif /* PNG_NO_EXTERN */ + +/* Three color definitions. The order of the red, green, and blue, (and the + * exact size) is not important, although the size of the fields need to + * be png_byte or png_uint_16 (as defined below). + */ +typedef struct png_color_struct +{ + png_byte red; + png_byte green; + png_byte blue; +} png_color; +typedef png_color FAR * png_colorp; +typedef png_color FAR * FAR * png_colorpp; + +typedef struct png_color_16_struct +{ + png_byte index; /* used for palette files */ + png_uint_16 red; /* for use in red green blue files */ + png_uint_16 green; + png_uint_16 blue; + png_uint_16 gray; /* for use in grayscale files */ +} png_color_16; +typedef png_color_16 FAR * png_color_16p; +typedef png_color_16 FAR * FAR * png_color_16pp; + +typedef struct png_color_8_struct +{ + png_byte red; /* for use in red green blue files */ + png_byte green; + png_byte blue; + png_byte gray; /* for use in grayscale files */ + png_byte alpha; /* for alpha channel files */ +} png_color_8; +typedef png_color_8 FAR * png_color_8p; +typedef png_color_8 FAR * FAR * png_color_8pp; + +/* + * The following two structures are used for the in-core representation + * of sPLT chunks. + */ +typedef struct png_sPLT_entry_struct +{ + png_uint_16 red; + png_uint_16 green; + png_uint_16 blue; + png_uint_16 alpha; + png_uint_16 frequency; +} png_sPLT_entry; +typedef png_sPLT_entry FAR * png_sPLT_entryp; +typedef png_sPLT_entry FAR * FAR * png_sPLT_entrypp; + +/* When the depth of the sPLT palette is 8 bits, the color and alpha samples + * occupy the LSB of their respective members, and the MSB of each member + * is zero-filled. The frequency member always occupies the full 16 bits. + */ + +typedef struct png_sPLT_struct +{ + png_charp name; /* palette name */ + png_byte depth; /* depth of palette samples */ + png_sPLT_entryp entries; /* palette entries */ + png_int_32 nentries; /* number of palette entries */ +} png_sPLT_t; +typedef png_sPLT_t FAR * png_sPLT_tp; +typedef png_sPLT_t FAR * FAR * png_sPLT_tpp; + +#ifdef PNG_TEXT_SUPPORTED +/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file, + * and whether that contents is compressed or not. The "key" field + * points to a regular zero-terminated C string. The "text", "lang", and + * "lang_key" fields can be regular C strings, empty strings, or NULL pointers. + * However, the * structure returned by png_get_text() will always contain + * regular zero-terminated C strings (possibly empty), never NULL pointers, + * so they can be safely used in printf() and other string-handling functions. + */ +typedef struct png_text_struct +{ + int compression; /* compression value: + -1: tEXt, none + 0: zTXt, deflate + 1: iTXt, none + 2: iTXt, deflate */ + png_charp key; /* keyword, 1-79 character description of "text" */ + png_charp text; /* comment, may be an empty string (ie "") + or a NULL pointer */ + png_size_t text_length; /* length of the text string */ +#ifdef PNG_iTXt_SUPPORTED + png_size_t itxt_length; /* length of the itxt string */ + png_charp lang; /* language code, 0-79 characters + or a NULL pointer */ + png_charp lang_key; /* keyword translated UTF-8 string, 0 or more + chars or a NULL pointer */ +#endif +} png_text; +typedef png_text FAR * png_textp; +typedef png_text FAR * FAR * png_textpp; +#endif + +/* Supported compression types for text in PNG files (tEXt, and zTXt). + * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. */ +#define PNG_TEXT_COMPRESSION_NONE_WR -3 +#define PNG_TEXT_COMPRESSION_zTXt_WR -2 +#define PNG_TEXT_COMPRESSION_NONE -1 +#define PNG_TEXT_COMPRESSION_zTXt 0 +#define PNG_ITXT_COMPRESSION_NONE 1 +#define PNG_ITXT_COMPRESSION_zTXt 2 +#define PNG_TEXT_COMPRESSION_LAST 3 /* Not a valid value */ + +/* png_time is a way to hold the time in an machine independent way. + * Two conversions are provided, both from time_t and struct tm. There + * is no portable way to convert to either of these structures, as far + * as I know. If you know of a portable way, send it to me. As a side + * note - PNG has always been Year 2000 compliant! + */ +typedef struct png_time_struct +{ + png_uint_16 year; /* full year, as in, 1995 */ + png_byte month; /* month of year, 1 - 12 */ + png_byte day; /* day of month, 1 - 31 */ + png_byte hour; /* hour of day, 0 - 23 */ + png_byte minute; /* minute of hour, 0 - 59 */ + png_byte second; /* second of minute, 0 - 60 (for leap seconds) */ +} png_time; +typedef png_time FAR * png_timep; +typedef png_time FAR * FAR * png_timepp; + +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) +/* png_unknown_chunk is a structure to hold queued chunks for which there is + * no specific support. The idea is that we can use this to queue + * up private chunks for output even though the library doesn't actually + * know about their semantics. + */ +typedef struct png_unknown_chunk_t +{ + png_byte name[5]; + png_byte *data; + png_size_t size; + + /* libpng-using applications should NOT directly modify this byte. */ + png_byte location; /* mode of operation at read time */ +} +png_unknown_chunk; +typedef png_unknown_chunk FAR * png_unknown_chunkp; +typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp; +#endif + +/* png_info is a structure that holds the information in a PNG file so + * that the application can find out the characteristics of the image. + * If you are reading the file, this structure will tell you what is + * in the PNG file. If you are writing the file, fill in the information + * you want to put into the PNG file, then call png_write_info(). + * The names chosen should be very close to the PNG specification, so + * consult that document for information about the meaning of each field. + * + * With libpng < 0.95, it was only possible to directly set and read the + * the values in the png_info_struct, which meant that the contents and + * order of the values had to remain fixed. With libpng 0.95 and later, + * however, there are now functions that abstract the contents of + * png_info_struct from the application, so this makes it easier to use + * libpng with dynamic libraries, and even makes it possible to use + * libraries that don't have all of the libpng ancillary chunk-handing + * functionality. + * + * In any case, the order of the parameters in png_info_struct should NOT + * be changed for as long as possible to keep compatibility with applications + * that use the old direct-access method with png_info_struct. + * + * The following members may have allocated storage attached that should be + * cleaned up before the structure is discarded: palette, trans, text, + * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile, + * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these + * are automatically freed when the info structure is deallocated, if they were + * allocated internally by libpng. This behavior can be changed by means + * of the png_data_freer() function. + * + * More allocation details: all the chunk-reading functions that + * change these members go through the corresponding png_set_* + * functions. A function to clear these members is available: see + * png_free_data(). The png_set_* functions do not depend on being + * able to point info structure members to any of the storage they are + * passed (they make their own copies), EXCEPT that the png_set_text + * functions use the same storage passed to them in the text_ptr or + * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns + * functions do not make their own copies. + */ +typedef struct png_info_struct +{ + /* the following are necessary for every PNG file */ + png_uint_32 width; /* width of image in pixels (from IHDR) */ + png_uint_32 height; /* height of image in pixels (from IHDR) */ + png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */ + png_uint_32 rowbytes; /* bytes needed to hold an untransformed row */ + png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */ + png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */ + png_uint_16 num_trans; /* number of transparent palette color (tRNS) */ + png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */ + png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */ + /* The following three should have been named *_method not *_type */ + png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */ + png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */ + png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ + + /* The following is informational only on read, and not used on writes. */ + png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */ + png_byte pixel_depth; /* number of bits per pixel */ + png_byte spare_byte; /* to align the data, and for future use */ + png_byte signature[8]; /* magic bytes read by libpng from start of file */ + + /* The rest of the data is optional. If you are reading, check the + * valid field to see if the information in these are valid. If you + * are writing, set the valid field to those chunks you want written, + * and initialize the appropriate fields below. + */ + +#if defined(PNG_gAMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED) + /* The gAMA chunk describes the gamma characteristics of the system + * on which the image was created, normally in the range [1.0, 2.5]. + * Data is valid if (valid & PNG_INFO_gAMA) is non-zero. + */ + float gamma; /* gamma value of image, if (valid & PNG_INFO_gAMA) */ +#endif + +#if defined(PNG_sRGB_SUPPORTED) + /* GR-P, 0.96a */ + /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */ + png_byte srgb_intent; /* sRGB rendering intent [0, 1, 2, or 3] */ +#endif + +#if defined(PNG_TEXT_SUPPORTED) + /* The tEXt, and zTXt chunks contain human-readable textual data in + * uncompressed, compressed, and optionally compressed forms, respectively. + * The data in "text" is an array of pointers to uncompressed, + * null-terminated C strings. Each chunk has a keyword that describes the + * textual data contained in that chunk. Keywords are not required to be + * unique, and the text string may be empty. Any number of text chunks may + * be in an image. + */ + int num_text; /* number of comments read/to write */ + int max_text; /* current size of text array */ + png_textp text; /* array of comments read/to write */ +#endif /* PNG_TEXT_SUPPORTED */ + +#if defined(PNG_tIME_SUPPORTED) + /* The tIME chunk holds the last time the displayed image data was + * modified. See the png_time struct for the contents of this struct. + */ + png_time mod_time; +#endif + +#if defined(PNG_sBIT_SUPPORTED) + /* The sBIT chunk specifies the number of significant high-order bits + * in the pixel data. Values are in the range [1, bit_depth], and are + * only specified for the channels in the pixel data. The contents of + * the low-order bits is not specified. Data is valid if + * (valid & PNG_INFO_sBIT) is non-zero. + */ + png_color_8 sig_bit; /* significant bits in color channels */ +#endif + +#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \ +defined(PNG_READ_BACKGROUND_SUPPORTED) + /* The tRNS chunk supplies transparency data for paletted images and + * other image types that don't need a full alpha channel. There are + * "num_trans" transparency values for a paletted image, stored in the + * same order as the palette colors, starting from index 0. Values + * for the data are in the range [0, 255], ranging from fully transparent + * to fully opaque, respectively. For non-paletted images, there is a + * single color specified that should be treated as fully transparent. + * Data is valid if (valid & PNG_INFO_tRNS) is non-zero. + */ + png_bytep trans; /* transparent values for paletted image */ + png_color_16 trans_values; /* transparent color for non-palette image */ +#endif + +#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) + /* The bKGD chunk gives the suggested image background color if the + * display program does not have its own background color and the image + * is needs to composited onto a background before display. The colors + * in "background" are normally in the same color space/depth as the + * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero. + */ + png_color_16 background; +#endif + +#if defined(PNG_oFFs_SUPPORTED) + /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards + * and downwards from the top-left corner of the display, page, or other + * application-specific co-ordinate space. See the PNG_OFFSET_ defines + * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero. + */ + png_int_32 x_offset; /* x offset on page */ + png_int_32 y_offset; /* y offset on page */ + png_byte offset_unit_type; /* offset units type */ +#endif + +#if defined(PNG_pHYs_SUPPORTED) + /* The pHYs chunk gives the physical pixel density of the image for + * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_ + * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero. + */ + png_uint_32 x_pixels_per_unit; /* horizontal pixel density */ + png_uint_32 y_pixels_per_unit; /* vertical pixel density */ + png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */ +#endif + +#if defined(PNG_hIST_SUPPORTED) + /* The hIST chunk contains the relative frequency or importance of the + * various palette entries, so that a viewer can intelligently select a + * reduced-color palette, if required. Data is an array of "num_palette" + * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST) + * is non-zero. + */ + png_uint_16p hist; +#endif + +#ifdef PNG_cHRM_SUPPORTED + /* The cHRM chunk describes the CIE color characteristics of the monitor + * on which the PNG was created. This data allows the viewer to do gamut + * mapping of the input image to ensure that the viewer sees the same + * colors in the image as the creator. Values are in the range + * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero. + */ +#ifdef PNG_FLOATING_POINT_SUPPORTED + float x_white; + float y_white; + float x_red; + float y_red; + float x_green; + float y_green; + float x_blue; + float y_blue; +#endif +#endif + +#if defined(PNG_pCAL_SUPPORTED) + /* The pCAL chunk describes a transformation between the stored pixel + * values and original physical data values used to create the image. + * The integer range [0, 2^bit_depth - 1] maps to the floating-point + * range given by [pcal_X0, pcal_X1], and are further transformed by a + * (possibly non-linear) transformation function given by "pcal_type" + * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_ + * defines below, and the PNG-Group's PNG extensions document for a + * complete description of the transformations and how they should be + * implemented, and for a description of the ASCII parameter strings. + * Data values are valid if (valid & PNG_INFO_pCAL) non-zero. + */ + png_charp pcal_purpose; /* pCAL chunk description string */ + png_int_32 pcal_X0; /* minimum value */ + png_int_32 pcal_X1; /* maximum value */ + png_charp pcal_units; /* Latin-1 string giving physical units */ + png_charpp pcal_params; /* ASCII strings containing parameter values */ + png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */ + png_byte pcal_nparams; /* number of parameters given in pcal_params */ +#endif + +/* New members added in libpng-1.0.6 */ +#ifdef PNG_FREE_ME_SUPPORTED + png_uint_32 free_me; /* flags items libpng is responsible for freeing */ +#endif + +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) + /* storage for unknown chunks that the library doesn't recognize. */ + png_unknown_chunkp unknown_chunks; + png_size_t unknown_chunks_num; +#endif + +#if defined(PNG_iCCP_SUPPORTED) + /* iCCP chunk data. */ + png_charp iccp_name; /* profile name */ + png_charp iccp_profile; /* International Color Consortium profile data */ + /* Note to maintainer: should be png_bytep */ + png_uint_32 iccp_proflen; /* ICC profile data length */ + png_byte iccp_compression; /* Always zero */ +#endif + +#if defined(PNG_sPLT_SUPPORTED) + /* data on sPLT chunks (there may be more than one). */ + png_sPLT_tp splt_palettes; + png_uint_32 splt_palettes_num; +#endif + +#if defined(PNG_sCAL_SUPPORTED) + /* The sCAL chunk describes the actual physical dimensions of the + * subject matter of the graphic. The chunk contains a unit specification + * a byte value, and two ASCII strings representing floating-point + * values. The values are width and height corresponsing to one pixel + * in the image. This external representation is converted to double + * here. Data values are valid if (valid & PNG_INFO_sCAL) is non-zero. + */ + png_byte scal_unit; /* unit of physical scale */ +#ifdef PNG_FLOATING_POINT_SUPPORTED + double scal_pixel_width; /* width of one pixel */ + double scal_pixel_height; /* height of one pixel */ +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED + png_charp scal_s_width; /* string containing height */ + png_charp scal_s_height; /* string containing width */ +#endif +#endif + +#if defined(PNG_INFO_IMAGE_SUPPORTED) + /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) non-zero */ + /* Data valid if (valid & PNG_INFO_IDAT) non-zero */ + png_bytepp row_pointers; /* the image bits */ +#endif + +#if defined(PNG_FIXED_POINT_SUPPORTED) && defined(PNG_gAMA_SUPPORTED) + png_fixed_point int_gamma; /* gamma of image, if (valid & PNG_INFO_gAMA) */ +#endif + +#if defined(PNG_cHRM_SUPPORTED) && defined(PNG_FIXED_POINT_SUPPORTED) + png_fixed_point int_x_white; + png_fixed_point int_y_white; + png_fixed_point int_x_red; + png_fixed_point int_y_red; + png_fixed_point int_x_green; + png_fixed_point int_y_green; + png_fixed_point int_x_blue; + png_fixed_point int_y_blue; +#endif + +} png_info; + +typedef png_info FAR * png_infop; +typedef png_info FAR * FAR * png_infopp; + +/* Maximum positive integer used in PNG is (2^31)-1 */ +#define PNG_MAX_UINT ((png_uint_32)0x7fffffffL) + +/* These describe the color_type field in png_info. */ +/* color type masks */ +#define PNG_COLOR_MASK_PALETTE 1 +#define PNG_COLOR_MASK_COLOR 2 +#define PNG_COLOR_MASK_ALPHA 4 + +/* color types. Note that not all combinations are legal */ +#define PNG_COLOR_TYPE_GRAY 0 +#define PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE) +#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR) +#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA) +#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA) +/* aliases */ +#define PNG_COLOR_TYPE_RGBA PNG_COLOR_TYPE_RGB_ALPHA +#define PNG_COLOR_TYPE_GA PNG_COLOR_TYPE_GRAY_ALPHA + +/* This is for compression type. PNG 1.0-1.2 only define the single type. */ +#define PNG_COMPRESSION_TYPE_BASE 0 /* Deflate method 8, 32K window */ +#define PNG_COMPRESSION_TYPE_DEFAULT PNG_COMPRESSION_TYPE_BASE + +/* This is for filter type. PNG 1.0-1.2 only define the single type. */ +#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */ +#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */ +#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE + +/* These are for the interlacing type. These values should NOT be changed. */ +#define PNG_INTERLACE_NONE 0 /* Non-interlaced image */ +#define PNG_INTERLACE_ADAM7 1 /* Adam7 interlacing */ +#define PNG_INTERLACE_LAST 2 /* Not a valid value */ + +/* These are for the oFFs chunk. These values should NOT be changed. */ +#define PNG_OFFSET_PIXEL 0 /* Offset in pixels */ +#define PNG_OFFSET_MICROMETER 1 /* Offset in micrometers (1/10^6 meter) */ +#define PNG_OFFSET_LAST 2 /* Not a valid value */ + +/* These are for the pCAL chunk. These values should NOT be changed. */ +#define PNG_EQUATION_LINEAR 0 /* Linear transformation */ +#define PNG_EQUATION_BASE_E 1 /* Exponential base e transform */ +#define PNG_EQUATION_ARBITRARY 2 /* Arbitrary base exponential transform */ +#define PNG_EQUATION_HYPERBOLIC 3 /* Hyperbolic sine transformation */ +#define PNG_EQUATION_LAST 4 /* Not a valid value */ + +/* These are for the sCAL chunk. These values should NOT be changed. */ +#define PNG_SCALE_UNKNOWN 0 /* unknown unit (image scale) */ +#define PNG_SCALE_METER 1 /* meters per pixel */ +#define PNG_SCALE_RADIAN 2 /* radians per pixel */ +#define PNG_SCALE_LAST 3 /* Not a valid value */ + +/* These are for the pHYs chunk. These values should NOT be changed. */ +#define PNG_RESOLUTION_UNKNOWN 0 /* pixels/unknown unit (aspect ratio) */ +#define PNG_RESOLUTION_METER 1 /* pixels/meter */ +#define PNG_RESOLUTION_LAST 2 /* Not a valid value */ + +/* These are for the sRGB chunk. These values should NOT be changed. */ +#define PNG_sRGB_INTENT_PERCEPTUAL 0 +#define PNG_sRGB_INTENT_RELATIVE 1 +#define PNG_sRGB_INTENT_SATURATION 2 +#define PNG_sRGB_INTENT_ABSOLUTE 3 +#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */ + +/* This is for text chunks */ +#define PNG_KEYWORD_MAX_LENGTH 79 + +/* Maximum number of entries in PLTE/sPLT/tRNS arrays */ +#define PNG_MAX_PALETTE_LENGTH 256 + +/* These determine if an ancillary chunk's data has been successfully read + * from the PNG header, or if the application has filled in the corresponding + * data in the info_struct to be written into the output file. The values + * of the PNG_INFO_ defines should NOT be changed. + */ +#define PNG_INFO_gAMA 0x0001 +#define PNG_INFO_sBIT 0x0002 +#define PNG_INFO_cHRM 0x0004 +#define PNG_INFO_PLTE 0x0008 +#define PNG_INFO_tRNS 0x0010 +#define PNG_INFO_bKGD 0x0020 +#define PNG_INFO_hIST 0x0040 +#define PNG_INFO_pHYs 0x0080 +#define PNG_INFO_oFFs 0x0100 +#define PNG_INFO_tIME 0x0200 +#define PNG_INFO_pCAL 0x0400 +#define PNG_INFO_sRGB 0x0800 /* GR-P, 0.96a */ +#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */ +#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */ +#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */ +#define PNG_INFO_IDAT 0x8000L /* ESR, 1.0.6 */ + +/* This is used for the transformation routines, as some of them + * change these values for the row. It also should enable using + * the routines for other purposes. + */ +typedef struct png_row_info_struct +{ + png_uint_32 width; /* width of row */ + png_uint_32 rowbytes; /* number of bytes in row */ + png_byte color_type; /* color type of row */ + png_byte bit_depth; /* bit depth of row */ + png_byte channels; /* number of channels (1, 2, 3, or 4) */ + png_byte pixel_depth; /* bits per pixel (depth * channels) */ +} png_row_info; + +typedef png_row_info FAR * png_row_infop; +typedef png_row_info FAR * FAR * png_row_infopp; + +/* These are the function types for the I/O functions and for the functions + * that allow the user to override the default I/O functions with his or her + * own. The png_error_ptr type should match that of user-supplied warning + * and error functions, while the png_rw_ptr type should match that of the + * user read/write data functions. + */ +typedef struct png_struct_def png_struct; +typedef png_struct FAR * png_structp; + +typedef void (PNGAPI *png_error_ptr) PNGARG((png_structp, png_const_charp)); +typedef void (PNGAPI *png_rw_ptr) PNGARG((png_structp, png_bytep, png_size_t)); +typedef void (PNGAPI *png_flush_ptr) PNGARG((png_structp)); +typedef void (PNGAPI *png_read_status_ptr) PNGARG((png_structp, png_uint_32, + int)); +typedef void (PNGAPI *png_write_status_ptr) PNGARG((png_structp, png_uint_32, + int)); + +#ifdef PNG_PROGRESSIVE_READ_SUPPORTED +typedef void (PNGAPI *png_progressive_info_ptr) PNGARG((png_structp, png_infop)); +typedef void (PNGAPI *png_progressive_end_ptr) PNGARG((png_structp, png_infop)); +typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep, + png_uint_32, int)); +#endif + +#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_LEGACY_SUPPORTED) +typedef void (PNGAPI *png_user_transform_ptr) PNGARG((png_structp, + png_row_infop, png_bytep)); +#endif + +#if defined(PNG_USER_CHUNKS_SUPPORTED) +typedef int (PNGAPI *png_user_chunk_ptr) PNGARG((png_structp, png_unknown_chunkp)); +#endif +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) +typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp)); +#endif + +/* Transform masks for the high-level interface */ +#define PNG_TRANSFORM_IDENTITY 0x0000 /* read and write */ +#define PNG_TRANSFORM_STRIP_16 0x0001 /* read only */ +#define PNG_TRANSFORM_STRIP_ALPHA 0x0002 /* read only */ +#define PNG_TRANSFORM_PACKING 0x0004 /* read and write */ +#define PNG_TRANSFORM_PACKSWAP 0x0008 /* read and write */ +#define PNG_TRANSFORM_EXPAND 0x0010 /* read only */ +#define PNG_TRANSFORM_INVERT_MONO 0x0020 /* read and write */ +#define PNG_TRANSFORM_SHIFT 0x0040 /* read and write */ +#define PNG_TRANSFORM_BGR 0x0080 /* read and write */ +#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */ +#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */ +#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */ +#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* WRITE only */ + +/* Flags for MNG supported features */ +#define PNG_FLAG_MNG_EMPTY_PLTE 0x01 +#define PNG_FLAG_MNG_FILTER_64 0x04 +#define PNG_ALL_MNG_FEATURES 0x05 + +typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_size_t)); +typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp)); + +/* The structure that holds the information to read and write PNG files. + * The only people who need to care about what is inside of this are the + * people who will be modifying the library for their own special needs. + * It should NOT be accessed directly by an application, except to store + * the jmp_buf. + */ + +struct png_struct_def +{ +#ifdef PNG_SETJMP_SUPPORTED + jmp_buf jmpbuf; /* used in png_error */ +#endif + png_error_ptr error_fn; /* function for printing errors and aborting */ + png_error_ptr warning_fn; /* function for printing warnings */ + png_voidp error_ptr; /* user supplied struct for error functions */ + png_rw_ptr write_data_fn; /* function for writing output data */ + png_rw_ptr read_data_fn; /* function for reading input data */ + png_voidp io_ptr; /* ptr to application struct for I/O functions */ + +#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) + png_user_transform_ptr read_user_transform_fn; /* user read transform */ +#endif + +#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) + png_user_transform_ptr write_user_transform_fn; /* user write transform */ +#endif + +/* These were added in libpng-1.0.2 */ +#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) +#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) + png_voidp user_transform_ptr; /* user supplied struct for user transform */ + png_byte user_transform_depth; /* bit depth of user transformed pixels */ + png_byte user_transform_channels; /* channels in user transformed pixels */ +#endif +#endif + + png_uint_32 mode; /* tells us where we are in the PNG file */ + png_uint_32 flags; /* flags indicating various things to libpng */ + png_uint_32 transformations; /* which transformations to perform */ + + z_stream zstream; /* pointer to decompression structure (below) */ + png_bytep zbuf; /* buffer for zlib */ + png_size_t zbuf_size; /* size of zbuf */ + int zlib_level; /* holds zlib compression level */ + int zlib_method; /* holds zlib compression method */ + int zlib_window_bits; /* holds zlib compression window bits */ + int zlib_mem_level; /* holds zlib compression memory level */ + int zlib_strategy; /* holds zlib compression strategy */ + + png_uint_32 width; /* width of image in pixels */ + png_uint_32 height; /* height of image in pixels */ + png_uint_32 num_rows; /* number of rows in current pass */ + png_uint_32 usr_width; /* width of row at start of write */ + png_uint_32 rowbytes; /* size of row in bytes */ + png_uint_32 irowbytes; /* size of current interlaced row in bytes */ + png_uint_32 iwidth; /* width of current interlaced row in pixels */ + png_uint_32 row_number; /* current row in interlace pass */ + png_bytep prev_row; /* buffer to save previous (unfiltered) row */ + png_bytep row_buf; /* buffer to save current (unfiltered) row */ + png_bytep sub_row; /* buffer to save "sub" row when filtering */ + png_bytep up_row; /* buffer to save "up" row when filtering */ + png_bytep avg_row; /* buffer to save "avg" row when filtering */ + png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */ + png_row_info row_info; /* used for transformation routines */ + + png_uint_32 idat_size; /* current IDAT size for read */ + png_uint_32 crc; /* current chunk CRC value */ + png_colorp palette; /* palette from the input file */ + png_uint_16 num_palette; /* number of color entries in palette */ + png_uint_16 num_trans; /* number of transparency values */ + png_byte chunk_name[5]; /* null-terminated name of current chunk */ + png_byte compression; /* file compression type (always 0) */ + png_byte filter; /* file filter type (always 0) */ + png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ + png_byte pass; /* current interlace pass (0 - 6) */ + png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */ + png_byte color_type; /* color type of file */ + png_byte bit_depth; /* bit depth of file */ + png_byte usr_bit_depth; /* bit depth of users row */ + png_byte pixel_depth; /* number of bits per pixel */ + png_byte channels; /* number of channels in file */ + png_byte usr_channels; /* channels at start of write */ + png_byte sig_bytes; /* magic bytes read/written from start of file */ + +#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) +#ifdef PNG_LEGACY_SUPPORTED + png_byte filler; /* filler byte for pixel expansion */ +#else + png_uint_16 filler; /* filler bytes for pixel expansion */ +#endif +#endif + +#if defined(PNG_bKGD_SUPPORTED) + png_byte background_gamma_type; +# ifdef PNG_FLOATING_POINT_SUPPORTED + float background_gamma; +# endif + png_color_16 background; /* background color in screen gamma space */ +#if defined(PNG_READ_GAMMA_SUPPORTED) + png_color_16 background_1; /* background normalized to gamma 1.0 */ +#endif +#endif /* PNG_bKGD_SUPPORTED */ + +#if defined(PNG_WRITE_FLUSH_SUPPORTED) + png_flush_ptr output_flush_fn;/* Function for flushing output */ + png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */ + png_uint_32 flush_rows; /* number of rows written since last flush */ +#endif + +#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) + int gamma_shift; /* number of "insignificant" bits 16-bit gamma */ +#ifdef PNG_FLOATING_POINT_SUPPORTED + float gamma; /* file gamma value */ + float screen_gamma; /* screen gamma value (display_exponent) */ +#endif +#endif + +#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) + png_bytep gamma_table; /* gamma table for 8-bit depth files */ + png_bytep gamma_from_1; /* converts from 1.0 to screen */ + png_bytep gamma_to_1; /* converts from file to 1.0 */ + png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */ + png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */ + png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */ +#endif + +#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED) + png_color_8 sig_bit; /* significant bits in each available channel */ +#endif + +#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) + png_color_8 shift; /* shift for significant bit tranformation */ +#endif + +#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \ + || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) + png_bytep trans; /* transparency values for paletted files */ + png_color_16 trans_values; /* transparency values for non-paletted files */ +#endif + + png_read_status_ptr read_row_fn; /* called after each row is decoded */ + png_write_status_ptr write_row_fn; /* called after each row is encoded */ +#ifdef PNG_PROGRESSIVE_READ_SUPPORTED + png_progressive_info_ptr info_fn; /* called after header data fully read */ + png_progressive_row_ptr row_fn; /* called after each prog. row is decoded */ + png_progressive_end_ptr end_fn; /* called after image is complete */ + png_bytep save_buffer_ptr; /* current location in save_buffer */ + png_bytep save_buffer; /* buffer for previously read data */ + png_bytep current_buffer_ptr; /* current location in current_buffer */ + png_bytep current_buffer; /* buffer for recently used data */ + png_uint_32 push_length; /* size of current input chunk */ + png_uint_32 skip_length; /* bytes to skip in input data */ + png_size_t save_buffer_size; /* amount of data now in save_buffer */ + png_size_t save_buffer_max; /* total size of save_buffer */ + png_size_t buffer_size; /* total amount of available input data */ + png_size_t current_buffer_size; /* amount of data now in current_buffer */ + int process_mode; /* what push library is currently doing */ + int cur_palette; /* current push library palette index */ + +# if defined(PNG_TEXT_SUPPORTED) + png_size_t current_text_size; /* current size of text input data */ + png_size_t current_text_left; /* how much text left to read in input */ + png_charp current_text; /* current text chunk buffer */ + png_charp current_text_ptr; /* current location in current_text */ +# endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */ + +#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ + +#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__) +/* for the Borland special 64K segment handler */ + png_bytepp offset_table_ptr; + png_bytep offset_table; + png_uint_16 offset_table_number; + png_uint_16 offset_table_count; + png_uint_16 offset_table_count_free; +#endif + +#if defined(PNG_READ_DITHER_SUPPORTED) + png_bytep palette_lookup; /* lookup table for dithering */ + png_bytep dither_index; /* index translation for palette files */ +#endif + +#if defined(PNG_READ_DITHER_SUPPORTED) || defined(PNG_hIST_SUPPORTED) + png_uint_16p hist; /* histogram */ +#endif + +#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED) + png_byte heuristic_method; /* heuristic for row filter selection */ + png_byte num_prev_filters; /* number of weights for previous rows */ + png_bytep prev_filters; /* filter type(s) of previous row(s) */ + png_uint_16p filter_weights; /* weight(s) for previous line(s) */ + png_uint_16p inv_filter_weights; /* 1/weight(s) for previous line(s) */ + png_uint_16p filter_costs; /* relative filter calculation cost */ + png_uint_16p inv_filter_costs; /* 1/relative filter calculation cost */ +#endif + +#if defined(PNG_TIME_RFC1123_SUPPORTED) + png_charp time_buffer; /* String to hold RFC 1123 time text */ +#endif + +/* New members added in libpng-1.0.6 */ + +#ifdef PNG_FREE_ME_SUPPORTED + png_uint_32 free_me; /* flags items libpng is responsible for freeing */ +#endif + +#if defined(PNG_USER_CHUNKS_SUPPORTED) + png_voidp user_chunk_ptr; + png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */ +#endif + +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) + int num_chunk_list; + png_bytep chunk_list; +#endif + +/* New members added in libpng-1.0.3 */ +#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) + png_byte rgb_to_gray_status; + /* These were changed from png_byte in libpng-1.0.6 */ + png_uint_16 rgb_to_gray_red_coeff; + png_uint_16 rgb_to_gray_green_coeff; + png_uint_16 rgb_to_gray_blue_coeff; +#endif + +/* New member added in libpng-1.0.4 (renamed in 1.0.9) */ +#if defined(PNG_MNG_FEATURES_SUPPORTED) || \ + defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ + defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) +/* changed from png_byte to png_uint_32 at version 1.2.0 */ +#ifdef PNG_1_0_X + png_byte mng_features_permitted; +#else + png_uint_32 mng_features_permitted; +#endif /* PNG_1_0_X */ +#endif + +/* New member added in libpng-1.0.7 */ +#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) + png_fixed_point int_gamma; +#endif + +/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */ +#if defined(PNG_MNG_FEATURES_SUPPORTED) + png_byte filter_type; +#endif + +#if defined(PNG_1_0_X) || (defined(PNG_DEBUG) && defined(PNG_USE_PNGGCCRD)) +/* New member added in libpng-1.0.10, ifdef'ed out in 1.2.0 */ + png_uint_32 row_buf_size; +#endif + +/* New members added in libpng-1.2.0 */ +#if !defined(PNG_1_0_X) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) + png_byte mmx_bitdepth_threshold; + png_uint_32 mmx_rowbytes_threshold; + png_uint_32 asm_flags; +#endif + +/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */ +#ifdef PNG_USER_MEM_SUPPORTED + png_voidp mem_ptr; /* user supplied struct for mem functions */ + png_malloc_ptr malloc_fn; /* function for allocating memory */ + png_free_ptr free_fn; /* function for freeing memory */ +#endif + +/* New member added in libpng-1.0.13 and 1.2.0 */ + png_bytep big_row_buf; /* buffer to save current (unfiltered) row */ + +#if defined(PNG_READ_DITHER_SUPPORTED) +/* The following three members were added at version 1.0.14 and 1.2.4 */ + png_bytep dither_sort; /* working sort array */ + png_bytep index_to_palette; /* where the original index currently is */ + /* in the palette */ + png_bytep palette_to_index; /* which original index points to this */ + /* palette color */ +#endif + +}; + + +/* This prevents a compiler error in png.c if png.c and png.h are both at + version 1.2.4 + */ +typedef png_structp version_1_2_4; + +typedef png_struct FAR * FAR * png_structpp; + +/* Here are the function definitions most commonly used. This is not + * the place to find out how to use libpng. See libpng.txt for the + * full explanation, see example.c for the summary. This just provides + * a simple one line description of the use of each function. + */ + +/* Returns the version number of the library */ +extern PNG_EXPORT(png_uint_32,png_access_version_number) PNGARG((void)); + +/* Tell lib we have already handled the first magic bytes. + * Handling more than 8 bytes from the beginning of the file is an error. + */ +extern PNG_EXPORT(void,png_set_sig_bytes) PNGARG((png_structp png_ptr, + int num_bytes)); + +/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a + * PNG file. Returns zero if the supplied bytes match the 8-byte PNG + * signature, and non-zero otherwise. Having num_to_check == 0 or + * start > 7 will always fail (ie return non-zero). + */ +extern PNG_EXPORT(int,png_sig_cmp) PNGARG((png_bytep sig, png_size_t start, + png_size_t num_to_check)); + +/* Simple signature checking function. This is the same as calling + * png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n). + */ +extern PNG_EXPORT(int,png_check_sig) PNGARG((png_bytep sig, int num)); + +/* Allocate and initialize png_ptr struct for reading, and any other memory. */ +extern PNG_EXPORT(png_structp,png_create_read_struct) + PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, + png_error_ptr error_fn, png_error_ptr warn_fn)); + +/* Allocate and initialize png_ptr struct for writing, and any other memory */ +extern PNG_EXPORT(png_structp,png_create_write_struct) + PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, + png_error_ptr error_fn, png_error_ptr warn_fn)); + +extern PNG_EXPORT(png_uint_32,png_get_compression_buffer_size) + PNGARG((png_structp png_ptr)); + +extern PNG_EXPORT(void,png_set_compression_buffer_size) + PNGARG((png_structp png_ptr, png_uint_32 size)); + +/* Reset the compression stream */ +extern PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr)); + +/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */ +#ifdef PNG_USER_MEM_SUPPORTED +extern PNG_EXPORT(png_structp,png_create_read_struct_2) + PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, + png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, + png_malloc_ptr malloc_fn, png_free_ptr free_fn)); +extern PNG_EXPORT(png_structp,png_create_write_struct_2) + PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, + png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, + png_malloc_ptr malloc_fn, png_free_ptr free_fn)); +#endif + +/* Write a PNG chunk - size, type, (optional) data, CRC. */ +extern PNG_EXPORT(void,png_write_chunk) PNGARG((png_structp png_ptr, + png_bytep chunk_name, png_bytep data, png_size_t length)); + +/* Write the start of a PNG chunk - length and chunk name. */ +extern PNG_EXPORT(void,png_write_chunk_start) PNGARG((png_structp png_ptr, + png_bytep chunk_name, png_uint_32 length)); + +/* Write the data of a PNG chunk started with png_write_chunk_start(). */ +extern PNG_EXPORT(void,png_write_chunk_data) PNGARG((png_structp png_ptr, + png_bytep data, png_size_t length)); + +/* Finish a chunk started with png_write_chunk_start() (includes CRC). */ +extern PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr)); + +/* Allocate and initialize the info structure */ +extern PNG_EXPORT(png_infop,png_create_info_struct) + PNGARG((png_structp png_ptr)); + +/* Initialize the info structure (old interface - DEPRECATED) */ +extern PNG_EXPORT(void,png_info_init) PNGARG((png_infop info_ptr)); +#undef png_info_init +#define png_info_init(info_ptr) png_info_init_3(&info_ptr, sizeof(png_info)); +extern PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr, + png_size_t png_info_struct_size)); + +/* Writes all the PNG information before the image. */ +extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr, + png_infop info_ptr)); +extern PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr, + png_infop info_ptr)); + +/* read the information before the actual image data. */ +extern PNG_EXPORT(void,png_read_info) PNGARG((png_structp png_ptr, + png_infop info_ptr)); + +#if defined(PNG_TIME_RFC1123_SUPPORTED) +extern PNG_EXPORT(png_charp,png_convert_to_rfc1123) + PNGARG((png_structp png_ptr, png_timep ptime)); +#endif + +#if !defined(_WIN32_WCE) +/* "time.h" functions are not supported on WindowsCE */ +#if defined(PNG_WRITE_tIME_SUPPORTED) +/* convert from a struct tm to png_time */ +extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime, + struct tm FAR * ttime)); + +/* convert from time_t to png_time. Uses gmtime() */ +extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime, + time_t ttime)); +#endif /* PNG_WRITE_tIME_SUPPORTED */ +#endif /* _WIN32_WCE */ + +#if defined(PNG_READ_EXPAND_SUPPORTED) +/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */ +extern PNG_EXPORT(void,png_set_expand) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(void,png_set_gray_1_2_4_to_8) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(void,png_set_palette_to_rgb) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(void,png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) +/* Use blue, green, red order for pixels. */ +extern PNG_EXPORT(void,png_set_bgr) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED) +/* Expand the grayscale to 24-bit RGB if necessary. */ +extern PNG_EXPORT(void,png_set_gray_to_rgb) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) +/* Reduce RGB to grayscale. */ +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_rgb_to_gray) PNGARG((png_structp png_ptr, + int error_action, double red, double green )); +#endif +extern PNG_EXPORT(void,png_set_rgb_to_gray_fixed) PNGARG((png_structp png_ptr, + int error_action, png_fixed_point red, png_fixed_point green )); +extern PNG_EXPORT(png_byte,png_get_rgb_to_gray_status) PNGARG((png_structp + png_ptr)); +#endif + +extern PNG_EXPORT(void,png_build_grayscale_palette) PNGARG((int bit_depth, + png_colorp palette)); + +#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED) +extern PNG_EXPORT(void,png_set_strip_alpha) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \ + defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) +extern PNG_EXPORT(void,png_set_swap_alpha) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \ + defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) +extern PNG_EXPORT(void,png_set_invert_alpha) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) +/* Add a filler byte to 24-bit RGB images. */ +extern PNG_EXPORT(void,png_set_filler) PNGARG((png_structp png_ptr, + png_uint_32 filler, int flags)); +/* The values of the PNG_FILLER_ defines should NOT be changed */ +#define PNG_FILLER_BEFORE 0 +#define PNG_FILLER_AFTER 1 +#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */ + +#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) +/* Swap bytes in 16-bit depth files. */ +extern PNG_EXPORT(void,png_set_swap) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED) +/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */ +extern PNG_EXPORT(void,png_set_packing) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED) +/* Swap packing order of pixels in bytes. */ +extern PNG_EXPORT(void,png_set_packswap) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) +/* Converts files to legal bit depths. */ +extern PNG_EXPORT(void,png_set_shift) PNGARG((png_structp png_ptr, + png_color_8p true_bits)); +#endif + +#if defined(PNG_READ_INTERLACING_SUPPORTED) || \ + defined(PNG_WRITE_INTERLACING_SUPPORTED) +/* Have the code handle the interlacing. Returns the number of passes. */ +extern PNG_EXPORT(int,png_set_interlace_handling) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) +/* Invert monochrome files */ +extern PNG_EXPORT(void,png_set_invert_mono) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_BACKGROUND_SUPPORTED) +/* Handle alpha and tRNS by replacing with a background color. */ +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr, + png_color_16p background_color, int background_gamma_code, + int need_expand, double background_gamma)); +#endif +#define PNG_BACKGROUND_GAMMA_UNKNOWN 0 +#define PNG_BACKGROUND_GAMMA_SCREEN 1 +#define PNG_BACKGROUND_GAMMA_FILE 2 +#define PNG_BACKGROUND_GAMMA_UNIQUE 3 +#endif + +#if defined(PNG_READ_16_TO_8_SUPPORTED) +/* strip the second byte of information from a 16-bit depth file. */ +extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_DITHER_SUPPORTED) +/* Turn on dithering, and reduce the palette to the number of colors available. */ +extern PNG_EXPORT(void,png_set_dither) PNGARG((png_structp png_ptr, + png_colorp palette, int num_palette, int maximum_colors, + png_uint_16p histogram, int full_dither)); +#endif + +#if defined(PNG_READ_GAMMA_SUPPORTED) +/* Handle gamma correction. Screen_gamma=(display_exponent) */ +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_gamma) PNGARG((png_structp png_ptr, + double screen_gamma, double default_file_gamma)); +#endif +#endif + +#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ + defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) +/* Permit or disallow empty PLTE (0: not permitted, 1: permitted) */ +/* Deprecated and will be removed. Use png_permit_mng_features() instead. */ +extern PNG_EXPORT(void,png_permit_empty_plte) PNGARG((png_structp png_ptr, + int empty_plte_permitted)); +#endif + +#if defined(PNG_WRITE_FLUSH_SUPPORTED) +/* Set how many lines between output flushes - 0 for no flushing */ +extern PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows)); +/* Flush the current PNG output buffer */ +extern PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr)); +#endif + +/* optional update palette with requested transformations */ +extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr)); + +/* optional call to update the users info structure */ +extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr, + png_infop info_ptr)); + +/* read one or more rows of image data. */ +extern PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr, + png_bytepp row, png_bytepp display_row, png_uint_32 num_rows)); + +/* read a row of data. */ +extern PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr, + png_bytep row, + png_bytep display_row)); + +/* read the whole image into memory at once. */ +extern PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr, + png_bytepp image)); + +/* write a row of image data */ +extern PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr, + png_bytep row)); + +/* write a few rows of image data */ +extern PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr, + png_bytepp row, png_uint_32 num_rows)); + +/* write the image data */ +extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr, + png_bytepp image)); + +/* writes the end of the PNG file. */ +extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr, + png_infop info_ptr)); + +/* read the end of the PNG file. */ +extern PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr, + png_infop info_ptr)); + +/* free any memory associated with the png_info_struct */ +extern PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr, + png_infopp info_ptr_ptr)); + +/* free any memory associated with the png_struct and the png_info_structs */ +extern PNG_EXPORT(void,png_destroy_read_struct) PNGARG((png_structpp + png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr)); + +/* free all memory used by the read (old method - NOT DLL EXPORTED) */ +extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr, + png_infop end_info_ptr)); + +/* free any memory associated with the png_struct and the png_info_structs */ +extern PNG_EXPORT(void,png_destroy_write_struct) + PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)); + +/* free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */ +extern void png_write_destroy PNGARG((png_structp png_ptr)); + +/* set the libpng method of handling chunk CRC errors */ +extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr, + int crit_action, int ancil_action)); + +/* Values for png_set_crc_action() to say how to handle CRC errors in + * ancillary and critical chunks, and whether to use the data contained + * therein. Note that it is impossible to "discard" data in a critical + * chunk. For versions prior to 0.90, the action was always error/quit, + * whereas in version 0.90 and later, the action for CRC errors in ancillary + * chunks is warn/discard. These values should NOT be changed. + * + * value action:critical action:ancillary + */ +#define PNG_CRC_DEFAULT 0 /* error/quit warn/discard data */ +#define PNG_CRC_ERROR_QUIT 1 /* error/quit error/quit */ +#define PNG_CRC_WARN_DISCARD 2 /* (INVALID) warn/discard data */ +#define PNG_CRC_WARN_USE 3 /* warn/use data warn/use data */ +#define PNG_CRC_QUIET_USE 4 /* quiet/use data quiet/use data */ +#define PNG_CRC_NO_CHANGE 5 /* use current value use current value */ + +/* These functions give the user control over the scan-line filtering in + * libpng and the compression methods used by zlib. These functions are + * mainly useful for testing, as the defaults should work with most users. + * Those users who are tight on memory or want faster performance at the + * expense of compression can modify them. See the compression library + * header file (zlib.h) for an explination of the compression functions. + */ + +/* set the filtering method(s) used by libpng. Currently, the only valid + * value for "method" is 0. + */ +extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method, + int filters)); + +/* Flags for png_set_filter() to say which filters to use. The flags + * are chosen so that they don't conflict with real filter types + * below, in case they are supplied instead of the #defined constants. + * These values should NOT be changed. + */ +#define PNG_NO_FILTERS 0x00 +#define PNG_FILTER_NONE 0x08 +#define PNG_FILTER_SUB 0x10 +#define PNG_FILTER_UP 0x20 +#define PNG_FILTER_AVG 0x40 +#define PNG_FILTER_PAETH 0x80 +#define PNG_ALL_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP | \ + PNG_FILTER_AVG | PNG_FILTER_PAETH) + +/* Filter values (not flags) - used in pngwrite.c, pngwutil.c for now. + * These defines should NOT be changed. + */ +#define PNG_FILTER_VALUE_NONE 0 +#define PNG_FILTER_VALUE_SUB 1 +#define PNG_FILTER_VALUE_UP 2 +#define PNG_FILTER_VALUE_AVG 3 +#define PNG_FILTER_VALUE_PAETH 4 +#define PNG_FILTER_VALUE_LAST 5 + +#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED) /* EXPERIMENTAL */ +/* The "heuristic_method" is given by one of the PNG_FILTER_HEURISTIC_ + * defines, either the default (minimum-sum-of-absolute-differences), or + * the experimental method (weighted-minimum-sum-of-absolute-differences). + * + * Weights are factors >= 1.0, indicating how important it is to keep the + * filter type consistent between rows. Larger numbers mean the current + * filter is that many times as likely to be the same as the "num_weights" + * previous filters. This is cumulative for each previous row with a weight. + * There needs to be "num_weights" values in "filter_weights", or it can be + * NULL if the weights aren't being specified. Weights have no influence on + * the selection of the first row filter. Well chosen weights can (in theory) + * improve the compression for a given image. + * + * Costs are factors >= 1.0 indicating the relative decoding costs of a + * filter type. Higher costs indicate more decoding expense, and are + * therefore less likely to be selected over a filter with lower computational + * costs. There needs to be a value in "filter_costs" for each valid filter + * type (given by PNG_FILTER_VALUE_LAST), or it can be NULL if you aren't + * setting the costs. Costs try to improve the speed of decompression without + * unduly increasing the compressed image size. + * + * A negative weight or cost indicates the default value is to be used, and + * values in the range [0.0, 1.0) indicate the value is to remain unchanged. + * The default values for both weights and costs are currently 1.0, but may + * change if good general weighting/cost heuristics can be found. If both + * the weights and costs are set to 1.0, this degenerates the WEIGHTED method + * to the UNWEIGHTED method, but with added encoding time/computation. + */ +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_filter_heuristics) PNGARG((png_structp png_ptr, + int heuristic_method, int num_weights, png_doublep filter_weights, + png_doublep filter_costs)); +#endif +#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */ + +/* Heuristic used for row filter selection. These defines should NOT be + * changed. + */ +#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */ +#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */ +#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */ +#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */ + +/* Set the library compression level. Currently, valid values range from + * 0 - 9, corresponding directly to the zlib compression levels 0 - 9 + * (0 - no compression, 9 - "maximal" compression). Note that tests have + * shown that zlib compression levels 3-6 usually perform as well as level 9 + * for PNG images, and do considerably fewer caclulations. In the future, + * these values may not correspond directly to the zlib compression levels. + */ +extern PNG_EXPORT(void,png_set_compression_level) PNGARG((png_structp png_ptr, + int level)); + +extern PNG_EXPORT(void,png_set_compression_mem_level) + PNGARG((png_structp png_ptr, int mem_level)); + +extern PNG_EXPORT(void,png_set_compression_strategy) + PNGARG((png_structp png_ptr, int strategy)); + +extern PNG_EXPORT(void,png_set_compression_window_bits) + PNGARG((png_structp png_ptr, int window_bits)); + +extern PNG_EXPORT(void,png_set_compression_method) PNGARG((png_structp png_ptr, + int method)); + +/* These next functions are called for input/output, memory, and error + * handling. They are in the file pngrio.c, pngwio.c, and pngerror.c, + * and call standard C I/O routines such as fread(), fwrite(), and + * fprintf(). These functions can be made to use other I/O routines + * at run time for those applications that need to handle I/O in a + * different manner by calling png_set_???_fn(). See libpng.txt for + * more information. + */ + +#if !defined(PNG_NO_STDIO) +/* Initialize the input/output for the PNG file to the default functions. */ +extern PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr, png_FILE_p fp)); +#endif + +/* Replace the (error and abort), and warning functions with user + * supplied functions. If no messages are to be printed you must still + * write and use replacement functions. The replacement error_fn should + * still do a longjmp to the last setjmp location if you are using this + * method of error handling. If error_fn or warning_fn is NULL, the + * default function will be used. + */ + +extern PNG_EXPORT(void,png_set_error_fn) PNGARG((png_structp png_ptr, + png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn)); + +/* Return the user pointer associated with the error functions */ +extern PNG_EXPORT(png_voidp,png_get_error_ptr) PNGARG((png_structp png_ptr)); + +/* Replace the default data output functions with a user supplied one(s). + * If buffered output is not used, then output_flush_fn can be set to NULL. + * If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time + * output_flush_fn will be ignored (and thus can be NULL). + */ +extern PNG_EXPORT(void,png_set_write_fn) PNGARG((png_structp png_ptr, + png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)); + +/* Replace the default data input function with a user supplied one. */ +extern PNG_EXPORT(void,png_set_read_fn) PNGARG((png_structp png_ptr, + png_voidp io_ptr, png_rw_ptr read_data_fn)); + +/* Return the user pointer associated with the I/O functions */ +extern PNG_EXPORT(png_voidp,png_get_io_ptr) PNGARG((png_structp png_ptr)); + +extern PNG_EXPORT(void,png_set_read_status_fn) PNGARG((png_structp png_ptr, + png_read_status_ptr read_row_fn)); + +extern PNG_EXPORT(void,png_set_write_status_fn) PNGARG((png_structp png_ptr, + png_write_status_ptr write_row_fn)); + +#ifdef PNG_USER_MEM_SUPPORTED +/* Replace the default memory allocation functions with user supplied one(s). */ +extern PNG_EXPORT(void,png_set_mem_fn) PNGARG((png_structp png_ptr, + png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn)); +/* Return the user pointer associated with the memory functions */ +extern PNG_EXPORT(png_voidp,png_get_mem_ptr) PNGARG((png_structp png_ptr)); +#endif + +#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_LEGACY_SUPPORTED) +extern PNG_EXPORT(void,png_set_read_user_transform_fn) PNGARG((png_structp + png_ptr, png_user_transform_ptr read_user_transform_fn)); +#endif + +#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_LEGACY_SUPPORTED) +extern PNG_EXPORT(void,png_set_write_user_transform_fn) PNGARG((png_structp + png_ptr, png_user_transform_ptr write_user_transform_fn)); +#endif + +#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_LEGACY_SUPPORTED) +extern PNG_EXPORT(void,png_set_user_transform_info) PNGARG((png_structp + png_ptr, png_voidp user_transform_ptr, int user_transform_depth, + int user_transform_channels)); +/* Return the user pointer associated with the user transform functions */ +extern PNG_EXPORT(png_voidp,png_get_user_transform_ptr) + PNGARG((png_structp png_ptr)); +#endif + +#ifdef PNG_USER_CHUNKS_SUPPORTED +extern PNG_EXPORT(void,png_set_read_user_chunk_fn) PNGARG((png_structp png_ptr, + png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn)); +extern PNG_EXPORT(png_voidp,png_get_user_chunk_ptr) PNGARG((png_structp + png_ptr)); +#endif + +#ifdef PNG_PROGRESSIVE_READ_SUPPORTED +/* Sets the function callbacks for the push reader, and a pointer to a + * user-defined structure available to the callback functions. + */ +extern PNG_EXPORT(void,png_set_progressive_read_fn) PNGARG((png_structp png_ptr, + png_voidp progressive_ptr, + png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn, + png_progressive_end_ptr end_fn)); + +/* returns the user pointer associated with the push read functions */ +extern PNG_EXPORT(png_voidp,png_get_progressive_ptr) + PNGARG((png_structp png_ptr)); + +/* function to be called when data becomes available */ +extern PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_bytep buffer, png_size_t buffer_size)); + +/* function that combines rows. Not very much different than the + * png_combine_row() call. Is this even used????? + */ +extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr, + png_bytep old_row, png_bytep new_row)); +#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ + +extern PNG_EXPORT(png_voidp,png_malloc) PNGARG((png_structp png_ptr, + png_uint_32 size)); + +#if defined(PNG_1_0_X) +# define png_malloc_warn png_malloc +#else +/* Added at libpng version 1.2.4 */ +extern PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr, + png_uint_32 size)); +#endif + +/* frees a pointer allocated by png_malloc() */ +extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr)); + +#if defined(PNG_1_0_X) +/* Function to allocate memory for zlib. */ +extern PNG_EXPORT(voidpf,png_zalloc) PNGARG((voidpf png_ptr, uInt items, + uInt size)); + +/* Function to free memory for zlib */ +extern PNG_EXPORT(void,png_zfree) PNGARG((voidpf png_ptr, voidpf ptr)); +#endif + +/* Free data that was allocated internally */ +extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 free_me, int num)); +#ifdef PNG_FREE_ME_SUPPORTED +/* Reassign responsibility for freeing existing data, whether allocated + * by libpng or by the application */ +extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr, + png_infop info_ptr, int freer, png_uint_32 mask)); +#endif +/* assignments for png_data_freer */ +#define PNG_DESTROY_WILL_FREE_DATA 1 +#define PNG_SET_WILL_FREE_DATA 1 +#define PNG_USER_WILL_FREE_DATA 2 +/* Flags for png_ptr->free_me and info_ptr->free_me */ +#define PNG_FREE_HIST 0x0008 +#define PNG_FREE_ICCP 0x0010 +#define PNG_FREE_SPLT 0x0020 +#define PNG_FREE_ROWS 0x0040 +#define PNG_FREE_PCAL 0x0080 +#define PNG_FREE_SCAL 0x0100 +#define PNG_FREE_UNKN 0x0200 +#define PNG_FREE_LIST 0x0400 +#define PNG_FREE_PLTE 0x1000 +#define PNG_FREE_TRNS 0x2000 +#define PNG_FREE_TEXT 0x4000 +#define PNG_FREE_ALL 0x7fff +#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */ + +#ifdef PNG_USER_MEM_SUPPORTED +extern PNG_EXPORT(png_voidp,png_malloc_default) PNGARG((png_structp png_ptr, + png_uint_32 size)); +extern PNG_EXPORT(void,png_free_default) PNGARG((png_structp png_ptr, + png_voidp ptr)); +#endif + +extern PNG_EXPORT(png_voidp,png_memcpy_check) PNGARG((png_structp png_ptr, + png_voidp s1, png_voidp s2, png_uint_32 size)); + +extern PNG_EXPORT(png_voidp,png_memset_check) PNGARG((png_structp png_ptr, + png_voidp s1, int value, png_uint_32 size)); + +#if defined(USE_FAR_KEYWORD) /* memory model conversion function */ +extern void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr, + int check)); +#endif /* USE_FAR_KEYWORD */ + +/* Fatal error in PNG image of libpng - can't continue */ +extern PNG_EXPORT(void,png_error) PNGARG((png_structp png_ptr, + png_const_charp error_message)); + +/* The same, but the chunk name is prepended to the error string. */ +extern PNG_EXPORT(void,png_chunk_error) PNGARG((png_structp png_ptr, + png_const_charp error_message)); + +/* Non-fatal error in libpng. Can continue, but may have a problem. */ +extern PNG_EXPORT(void,png_warning) PNGARG((png_structp png_ptr, + png_const_charp warning_message)); + +/* Non-fatal error in libpng, chunk name is prepended to message. */ +extern PNG_EXPORT(void,png_chunk_warning) PNGARG((png_structp png_ptr, + png_const_charp warning_message)); + +/* The png_set_ functions are for storing values in the png_info_struct. + * Similarly, the png_get_ calls are used to read values from the + * png_info_struct, either storing the parameters in the passed variables, or + * setting pointers into the png_info_struct where the data is stored. The + * png_get_ functions return a non-zero value if the data was available + * in info_ptr, or return zero and do not change any of the parameters if the + * data was not available. + * + * These functions should be used instead of directly accessing png_info + * to avoid problems with future changes in the size and internal layout of + * png_info_struct. + */ +/* Returns "flag" if chunk data is valid in info_ptr. */ +extern PNG_EXPORT(png_uint_32,png_get_valid) PNGARG((png_structp png_ptr, +png_infop info_ptr, png_uint_32 flag)); + +/* Returns number of bytes needed to hold a transformed row. */ +extern PNG_EXPORT(png_uint_32,png_get_rowbytes) PNGARG((png_structp png_ptr, +png_infop info_ptr)); + +#if defined(PNG_INFO_IMAGE_SUPPORTED) +/* Returns row_pointers, which is an array of pointers to scanlines that was +returned from png_read_png(). */ +extern PNG_EXPORT(png_bytepp,png_get_rows) PNGARG((png_structp png_ptr, +png_infop info_ptr)); +/* Set row_pointers, which is an array of pointers to scanlines for use +by png_write_png(). */ +extern PNG_EXPORT(void,png_set_rows) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_bytepp row_pointers)); +#endif + +/* Returns number of color channels in image. */ +extern PNG_EXPORT(png_byte,png_get_channels) PNGARG((png_structp png_ptr, +png_infop info_ptr)); + +#ifdef PNG_EASY_ACCESS_SUPPORTED +/* Returns image width in pixels. */ +extern PNG_EXPORT(png_uint_32, png_get_image_width) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +/* Returns image height in pixels. */ +extern PNG_EXPORT(png_uint_32, png_get_image_height) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +/* Returns image bit_depth. */ +extern PNG_EXPORT(png_byte, png_get_bit_depth) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +/* Returns image color_type. */ +extern PNG_EXPORT(png_byte, png_get_color_type) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +/* Returns image filter_type. */ +extern PNG_EXPORT(png_byte, png_get_filter_type) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +/* Returns image interlace_type. */ +extern PNG_EXPORT(png_byte, png_get_interlace_type) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +/* Returns image compression_type. */ +extern PNG_EXPORT(png_byte, png_get_compression_type) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +/* Returns image resolution in pixels per meter, from pHYs chunk data. */ +extern PNG_EXPORT(png_uint_32, png_get_pixels_per_meter) PNGARG((png_structp +png_ptr, png_infop info_ptr)); +extern PNG_EXPORT(png_uint_32, png_get_x_pixels_per_meter) PNGARG((png_structp +png_ptr, png_infop info_ptr)); +extern PNG_EXPORT(png_uint_32, png_get_y_pixels_per_meter) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +/* Returns pixel aspect ratio, computed from pHYs chunk data. */ +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(float, png_get_pixel_aspect_ratio) PNGARG((png_structp +png_ptr, png_infop info_ptr)); +#endif + +/* Returns image x, y offset in pixels or microns, from oFFs chunk data. */ +extern PNG_EXPORT(png_int_32, png_get_x_offset_pixels) PNGARG((png_structp +png_ptr, png_infop info_ptr)); +extern PNG_EXPORT(png_int_32, png_get_y_offset_pixels) PNGARG((png_structp +png_ptr, png_infop info_ptr)); +extern PNG_EXPORT(png_int_32, png_get_x_offset_microns) PNGARG((png_structp +png_ptr, png_infop info_ptr)); +extern PNG_EXPORT(png_int_32, png_get_y_offset_microns) PNGARG((png_structp +png_ptr, png_infop info_ptr)); + +#endif /* PNG_EASY_ACCESS_SUPPORTED */ + +/* Returns pointer to signature string read from PNG header */ +extern PNG_EXPORT(png_bytep,png_get_signature) PNGARG((png_structp png_ptr, +png_infop info_ptr)); + +#if defined(PNG_bKGD_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_bKGD) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_color_16p *background)); +#endif + +#if defined(PNG_bKGD_SUPPORTED) +extern PNG_EXPORT(void,png_set_bKGD) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_color_16p background)); +#endif + +#if defined(PNG_cHRM_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_cHRM) PNGARG((png_structp png_ptr, + png_infop info_ptr, double *white_x, double *white_y, double *red_x, + double *red_y, double *green_x, double *green_y, double *blue_x, + double *blue_y)); +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_cHRM_fixed) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_fixed_point *int_white_x, png_fixed_point + *int_white_y, png_fixed_point *int_red_x, png_fixed_point *int_red_y, + png_fixed_point *int_green_x, png_fixed_point *int_green_y, png_fixed_point + *int_blue_x, png_fixed_point *int_blue_y)); +#endif +#endif + +#if defined(PNG_cHRM_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_cHRM) PNGARG((png_structp png_ptr, + png_infop info_ptr, double white_x, double white_y, double red_x, + double red_y, double green_x, double green_y, double blue_x, double blue_y)); +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_cHRM_fixed) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_fixed_point int_white_x, png_fixed_point int_white_y, + png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point + int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, + png_fixed_point int_blue_y)); +#endif +#endif + +#if defined(PNG_gAMA_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_gAMA) PNGARG((png_structp png_ptr, + png_infop info_ptr, double *file_gamma)); +#endif +extern PNG_EXPORT(png_uint_32,png_get_gAMA_fixed) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_fixed_point *int_file_gamma)); +#endif + +#if defined(PNG_gAMA_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_gAMA) PNGARG((png_structp png_ptr, + png_infop info_ptr, double file_gamma)); +#endif +extern PNG_EXPORT(void,png_set_gAMA_fixed) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_fixed_point int_file_gamma)); +#endif + +#if defined(PNG_hIST_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_hIST) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_16p *hist)); +#endif + +#if defined(PNG_hIST_SUPPORTED) +extern PNG_EXPORT(void,png_set_hIST) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_16p hist)); +#endif + +extern PNG_EXPORT(png_uint_32,png_get_IHDR) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 *width, png_uint_32 *height, + int *bit_depth, int *color_type, int *interlace_method, + int *compression_method, int *filter_method)); + +extern PNG_EXPORT(void,png_set_IHDR) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth, + int color_type, int interlace_method, int compression_method, + int filter_method)); + +#if defined(PNG_oFFs_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_oFFs) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y, + int *unit_type)); +#endif + +#if defined(PNG_oFFs_SUPPORTED) +extern PNG_EXPORT(void,png_set_oFFs) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_int_32 offset_x, png_int_32 offset_y, + int unit_type)); +#endif + +#if defined(PNG_pCAL_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_pCAL) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_charp *purpose, png_int_32 *X0, png_int_32 *X1, + int *type, int *nparams, png_charp *units, png_charpp *params)); +#endif + +#if defined(PNG_pCAL_SUPPORTED) +extern PNG_EXPORT(void,png_set_pCAL) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1, + int type, int nparams, png_charp units, png_charpp params)); +#endif + +#if defined(PNG_pHYs_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_pHYs) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)); +#endif + +#if defined(PNG_pHYs_SUPPORTED) +extern PNG_EXPORT(void,png_set_pHYs) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type)); +#endif + +extern PNG_EXPORT(png_uint_32,png_get_PLTE) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_colorp *palette, int *num_palette)); + +extern PNG_EXPORT(void,png_set_PLTE) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_colorp palette, int num_palette)); + +#if defined(PNG_sBIT_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_sBIT) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_color_8p *sig_bit)); +#endif + +#if defined(PNG_sBIT_SUPPORTED) +extern PNG_EXPORT(void,png_set_sBIT) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_color_8p sig_bit)); +#endif + +#if defined(PNG_sRGB_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_sRGB) PNGARG((png_structp png_ptr, + png_infop info_ptr, int *intent)); +#endif + +#if defined(PNG_sRGB_SUPPORTED) +extern PNG_EXPORT(void,png_set_sRGB) PNGARG((png_structp png_ptr, + png_infop info_ptr, int intent)); +extern PNG_EXPORT(void,png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr, + png_infop info_ptr, int intent)); +#endif + +#if defined(PNG_iCCP_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_charpp name, int *compression_type, + png_charpp profile, png_uint_32 *proflen)); + /* Note to maintainer: profile should be png_bytepp */ +#endif + +#if defined(PNG_iCCP_SUPPORTED) +extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_charp name, int compression_type, + png_charp profile, png_uint_32 proflen)); + /* Note to maintainer: profile should be png_bytep */ +#endif + +#if defined(PNG_sPLT_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_sPLT) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_sPLT_tpp entries)); +#endif + +#if defined(PNG_sPLT_SUPPORTED) +extern PNG_EXPORT(void,png_set_sPLT) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_sPLT_tp entries, int nentries)); +#endif + +#if defined(PNG_TEXT_SUPPORTED) +/* png_get_text also returns the number of text chunks in *num_text */ +extern PNG_EXPORT(png_uint_32,png_get_text) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_textp *text_ptr, int *num_text)); +#endif + +/* + * Note while png_set_text() will accept a structure whose text, + * language, and translated keywords are NULL pointers, the structure + * returned by png_get_text will always contain regular + * zero-terminated C strings. They might be empty strings but + * they will never be NULL pointers. + */ + +#if defined(PNG_TEXT_SUPPORTED) +extern PNG_EXPORT(void,png_set_text) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_textp text_ptr, int num_text)); +#endif + +#if defined(PNG_tIME_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_tIME) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_timep *mod_time)); +#endif + +#if defined(PNG_tIME_SUPPORTED) +extern PNG_EXPORT(void,png_set_tIME) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_timep mod_time)); +#endif + +#if defined(PNG_tRNS_SUPPORTED) +extern PNG_EXPORT(png_uint_32,png_get_tRNS) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_bytep *trans, int *num_trans, + png_color_16p *trans_values)); +#endif + +#if defined(PNG_tRNS_SUPPORTED) +extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_bytep trans, int num_trans, + png_color_16p trans_values)); +#endif + +#if defined(PNG_tRNS_SUPPORTED) +#endif + +#if defined(PNG_sCAL_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_sCAL) PNGARG((png_structp png_ptr, + png_infop info_ptr, int *unit, double *width, double *height)); +#else +#ifdef PNG_FIXED_POINT_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_get_sCAL_s) PNGARG((png_structp png_ptr, + png_infop info_ptr, int *unit, png_charpp swidth, png_charpp sheight)); +#endif +#endif +#endif /* PNG_sCAL_SUPPORTED */ + +#if defined(PNG_sCAL_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_sCAL) PNGARG((png_structp png_ptr, + png_infop info_ptr, int unit, double width, double height)); +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED +extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr, + png_infop info_ptr, int unit, png_charp swidth, png_charp sheight)); +#endif +#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */ + +#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) +/* provide a list of chunks and how they are to be handled, if the built-in + handling or default unknown chunk handling is not desired. Any chunks not + listed will be handled in the default manner. The IHDR and IEND chunks + must not be listed. + keep = 0: follow default behavour + = 1: do not keep + = 2: keep only if safe-to-copy + = 3: keep even if unsafe-to-copy +*/ +extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp + png_ptr, int keep, png_bytep chunk_list, int num_chunks)); +extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr, + png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)); +extern PNG_EXPORT(void, png_set_unknown_chunk_location) + PNGARG((png_structp png_ptr, png_infop info_ptr, int chunk, int location)); +extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp + png_ptr, png_infop info_ptr, png_unknown_chunkpp entries)); +#endif +#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED +PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep + chunk_name)); +#endif + +/* Png_free_data() will turn off the "valid" flag for anything it frees. + If you need to turn it off for a chunk that your application has freed, + you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); */ +extern PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr, + png_infop info_ptr, int mask)); + +#if defined(PNG_INFO_IMAGE_SUPPORTED) +/* The "params" pointer is currently not used and is for future expansion. */ +extern PNG_EXPORT(void, png_read_png) PNGARG((png_structp png_ptr, + png_infop info_ptr, + int transforms, + png_voidp params)); +extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr, + png_infop info_ptr, + int transforms, + png_voidp params)); +#endif + +/* Define PNG_DEBUG at compile time for debugging information. Higher + * numbers for PNG_DEBUG mean more debugging information. This has + * only been added since version 0.95 so it is not implemented throughout + * libpng yet, but more support will be added as needed. + */ +#ifdef PNG_DEBUG +#if (PNG_DEBUG > 0) +#if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER) +#include +#if (PNG_DEBUG > 1) +#define png_debug(l,m) _RPT0(_CRT_WARN,m) +#define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m,p1) +#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m,p1,p2) +#endif +#else /* PNG_DEBUG_FILE || !_MSC_VER */ +#ifndef PNG_DEBUG_FILE +#define PNG_DEBUG_FILE stderr +#endif /* PNG_DEBUG_FILE */ +#if (PNG_DEBUG > 1) +#define png_debug(l,m) \ +{ \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \ +} +#define png_debug1(l,m,p1) \ +{ \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \ +} +#define png_debug2(l,m,p1,p2) \ +{ \ + int num_tabs=l; \ + fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \ + (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \ +} +#endif /* (PNG_DEBUG > 1) */ +#endif /* _MSC_VER */ +#endif /* (PNG_DEBUG > 0) */ +#endif /* PNG_DEBUG */ +#ifndef png_debug +#define png_debug(l, m) +#endif +#ifndef png_debug1 +#define png_debug1(l, m, p1) +#endif +#ifndef png_debug2 +#define png_debug2(l, m, p1, p2) +#endif + +extern PNG_EXPORT(png_bytep,png_sig_bytes) PNGARG((void)); + +extern PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr)); +extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr)); + +#ifdef PNG_MNG_FEATURES_SUPPORTED +extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp + png_ptr, png_uint_32 mng_features_permitted)); +#endif + +/* Added to version 1.2.0 */ +#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) +#define PNG_ASM_FLAG_MMX_SUPPORT_COMPILED 0x01 /* not user-settable */ +#define PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU 0x02 /* not user-settable */ +#define PNG_ASM_FLAG_MMX_READ_COMBINE_ROW 0x04 +#define PNG_ASM_FLAG_MMX_READ_INTERLACE 0x08 +#define PNG_ASM_FLAG_MMX_READ_FILTER_SUB 0x10 +#define PNG_ASM_FLAG_MMX_READ_FILTER_UP 0x20 +#define PNG_ASM_FLAG_MMX_READ_FILTER_AVG 0x40 +#define PNG_ASM_FLAG_MMX_READ_FILTER_PAETH 0x80 +#define PNG_ASM_FLAGS_INITIALIZED 0x80000000 /* not user-settable */ + +#define PNG_MMX_READ_FLAGS ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \ + | PNG_ASM_FLAG_MMX_READ_INTERLACE \ + | PNG_ASM_FLAG_MMX_READ_FILTER_SUB \ + | PNG_ASM_FLAG_MMX_READ_FILTER_UP \ + | PNG_ASM_FLAG_MMX_READ_FILTER_AVG \ + | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ) +#define PNG_MMX_WRITE_FLAGS ( 0 ) + +#define PNG_MMX_FLAGS ( PNG_ASM_FLAG_MMX_SUPPORT_COMPILED \ + | PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU \ + | PNG_MMX_READ_FLAGS \ + | PNG_MMX_WRITE_FLAGS ) + +#define PNG_SELECT_READ 1 +#define PNG_SELECT_WRITE 2 + + +#if !defined(PNG_1_0_X) +/* pngget.c */ +extern PNG_EXPORT(png_uint_32,png_get_mmx_flagmask) + PNGARG((int flag_select, int *compilerID)); + +/* pngget.c */ +extern PNG_EXPORT(png_uint_32,png_get_asm_flagmask) + PNGARG((int flag_select)); + +/* pngget.c */ +extern PNG_EXPORT(png_uint_32,png_get_asm_flags) + PNGARG((png_structp png_ptr)); + +/* pngget.c */ +extern PNG_EXPORT(png_byte,png_get_mmx_bitdepth_threshold) + PNGARG((png_structp png_ptr)); + +/* pngget.c */ +extern PNG_EXPORT(png_uint_32,png_get_mmx_rowbytes_threshold) + PNGARG((png_structp png_ptr)); + +/* pngset.c */ +extern PNG_EXPORT(void,png_set_asm_flags) + PNGARG((png_structp png_ptr, png_uint_32 asm_flags)); + +/* pngset.c */ +extern PNG_EXPORT(void,png_set_mmx_thresholds) + PNGARG((png_structp png_ptr, png_byte mmx_bitdepth_threshold, + png_uint_32 mmx_rowbytes_threshold)); + +#endif /* PNG_1_0_X */ +#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */ + +#if !defined(PNG_1_0_X) +/* png.c, pnggccrd.c, or pngvcrd.c */ +extern PNG_EXPORT(int,png_mmx_support) PNGARG((void)); + +/* Strip the prepended error numbers ("#nnn ") from error and warning + * messages before passing them to the error or warning handler. */ +#ifdef PNG_ERROR_NUMBERS_SUPPORTED +extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp + png_ptr, png_uint_32 strip_mode)); +#endif +#endif /* PNG_1_0_X */ + +/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */ + +#define PNG_HEADER_VERSION_STRING \ + " libpng version 1.2.4 - July 8, 2002 (header)\n" + +#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED +/* With these routines we avoid an integer divide, which will be slower on + * most machines. However, it does take more operations than the corresponding + * divide method, so it may be slower on a few RISC systems. There are two + * shifts (by 8 or 16 bits) and an addition, versus a single integer divide. + * + * Note that the rounding factors are NOT supposed to be the same! 128 and + * 32768 are correct for the NODIV code; 127 and 32767 are correct for the + * standard method. + * + * [Optimized code by Greg Roelofs and Mark Adler...blame us for bugs. :-) ] + */ + + /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */ + +# define png_composite(composite, fg, alpha, bg) \ + { png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) * (png_uint_16)(alpha) \ + + (png_uint_16)(bg)*(png_uint_16)(255 - \ + (png_uint_16)(alpha)) + (png_uint_16)128); \ + (composite) = (png_byte)((temp + (temp >> 8)) >> 8); } + +# define png_composite_16(composite, fg, alpha, bg) \ + { png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) * (png_uint_32)(alpha) \ + + (png_uint_32)(bg)*(png_uint_32)(65535L - \ + (png_uint_32)(alpha)) + (png_uint_32)32768L); \ + (composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); } + +#else /* standard method using integer division */ + +# define png_composite(composite, fg, alpha, bg) \ + (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \ + (png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \ + (png_uint_16)127) / 255) + +# define png_composite_16(composite, fg, alpha, bg) \ + (composite) = (png_uint_16)(((png_uint_32)(fg) * (png_uint_32)(alpha) + \ + (png_uint_32)(bg)*(png_uint_32)(65535L - (png_uint_32)(alpha)) + \ + (png_uint_32)32767) / (png_uint_32)65535L) + +#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */ + +/* These next functions are used internally in the code. They generally + * shouldn't be used unless you are writing code to add or replace some + * functionality in libpng. More information about most functions can + * be found in the files where the functions are located. + */ + +#if defined(PNG_INTERNAL) + +/* Various modes of operation. Note that after an init, mode is set to + * zero automatically when the structure is created. + */ +#define PNG_HAVE_IHDR 0x01 +#define PNG_HAVE_PLTE 0x02 +#define PNG_HAVE_IDAT 0x04 +#define PNG_AFTER_IDAT 0x08 +#define PNG_HAVE_IEND 0x10 +#define PNG_HAVE_gAMA 0x20 +#define PNG_HAVE_cHRM 0x40 +#define PNG_HAVE_sRGB 0x80 +#define PNG_HAVE_CHUNK_HEADER 0x100 +#define PNG_WROTE_tIME 0x200 +#define PNG_WROTE_INFO_BEFORE_PLTE 0x400 +#define PNG_BACKGROUND_IS_GRAY 0x800 +#define PNG_HAVE_PNG_SIGNATURE 0x1000 + +/* flags for the transformations the PNG library does on the image data */ +#define PNG_BGR 0x0001 +#define PNG_INTERLACE 0x0002 +#define PNG_PACK 0x0004 +#define PNG_SHIFT 0x0008 +#define PNG_SWAP_BYTES 0x0010 +#define PNG_INVERT_MONO 0x0020 +#define PNG_DITHER 0x0040 +#define PNG_BACKGROUND 0x0080 +#define PNG_BACKGROUND_EXPAND 0x0100 + /* 0x0200 unused */ +#define PNG_16_TO_8 0x0400 +#define PNG_RGBA 0x0800 +#define PNG_EXPAND 0x1000 +#define PNG_GAMMA 0x2000 +#define PNG_GRAY_TO_RGB 0x4000 +#define PNG_FILLER 0x8000L +#define PNG_PACKSWAP 0x10000L +#define PNG_SWAP_ALPHA 0x20000L +#define PNG_STRIP_ALPHA 0x40000L +#define PNG_INVERT_ALPHA 0x80000L +#define PNG_USER_TRANSFORM 0x100000L +#define PNG_RGB_TO_GRAY_ERR 0x200000L +#define PNG_RGB_TO_GRAY_WARN 0x400000L +#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */ + +/* flags for png_create_struct */ +#define PNG_STRUCT_PNG 0x0001 +#define PNG_STRUCT_INFO 0x0002 + +/* Scaling factor for filter heuristic weighting calculations */ +#define PNG_WEIGHT_SHIFT 8 +#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT)) +#define PNG_COST_SHIFT 3 +#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT)) + +/* flags for the png_ptr->flags rather than declaring a byte for each one */ +#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001 +#define PNG_FLAG_ZLIB_CUSTOM_LEVEL 0x0002 +#define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004 +#define PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS 0x0008 +#define PNG_FLAG_ZLIB_CUSTOM_METHOD 0x0010 +#define PNG_FLAG_ZLIB_FINISHED 0x0020 +#define PNG_FLAG_ROW_INIT 0x0040 +#define PNG_FLAG_FILLER_AFTER 0x0080 +#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100 +#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200 +#define PNG_FLAG_CRC_CRITICAL_USE 0x0400 +#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800 +#define PNG_FLAG_FREE_PLTE 0x1000 +#define PNG_FLAG_FREE_TRNS 0x2000 +#define PNG_FLAG_FREE_HIST 0x4000 +#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L +#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L +#define PNG_FLAG_LIBRARY_MISMATCH 0x20000L +#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L +#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L +#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L + +/* For use in png_set_keep_unknown, png_handle_as_unknown */ +#define HANDLE_CHUNK_AS_DEFAULT 0 +#define HANDLE_CHUNK_NEVER 1 +#define HANDLE_CHUNK_IF_SAFE 2 +#define HANDLE_CHUNK_ALWAYS 3 + +#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \ + PNG_FLAG_CRC_ANCILLARY_NOWARN) + +#define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \ + PNG_FLAG_CRC_CRITICAL_IGNORE) + +#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \ + PNG_FLAG_CRC_CRITICAL_MASK) + +/* save typing and make code easier to understand */ +#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \ + abs((int)((c1).green) - (int)((c2).green)) + \ + abs((int)((c1).blue) - (int)((c2).blue))) + +/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */ +#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN) +/* place to hold the signature string for a PNG file. */ +#ifdef PNG_USE_GLOBAL_ARRAYS + PNG_EXPORT_VAR (const png_byte FARDATA) png_sig[8]; +#else +#define png_sig png_sig_bytes(NULL) +#endif +#endif /* PNG_NO_EXTERN */ + +/* Constant strings for known chunk types. If you need to add a chunk, + * define the name here, and add an invocation of the macro in png.c and + * wherever it's needed. + */ +#define PNG_IHDR const png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'} +#define PNG_IDAT const png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'} +#define PNG_IEND const png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'} +#define PNG_PLTE const png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'} +#define PNG_bKGD const png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'} +#define PNG_cHRM const png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'} +#define PNG_gAMA const png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'} +#define PNG_hIST const png_byte png_hIST[5] = {104, 73, 83, 84, '\0'} +#define PNG_iCCP const png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'} +#define PNG_iTXt const png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'} +#define PNG_oFFs const png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'} +#define PNG_pCAL const png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'} +#define PNG_sCAL const png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'} +#define PNG_pHYs const png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'} +#define PNG_sBIT const png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'} +#define PNG_sPLT const png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'} +#define PNG_sRGB const png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'} +#define PNG_tEXt const png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'} +#define PNG_tIME const png_byte png_tIME[5] = {116, 73, 77, 69, '\0'} +#define PNG_tRNS const png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'} +#define PNG_zTXt const png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'} + +#ifdef PNG_USE_GLOBAL_ARRAYS +PNG_EXPORT_VAR (const png_byte FARDATA) png_IHDR[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_IDAT[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_IEND[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_PLTE[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_bKGD[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_cHRM[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_gAMA[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_hIST[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_iCCP[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_iTXt[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_oFFs[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_pCAL[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_sCAL[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_pHYs[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_sBIT[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_sPLT[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_sRGB[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_tEXt[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_tIME[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_tRNS[5]; +PNG_EXPORT_VAR (const png_byte FARDATA) png_zTXt[5]; +#endif /* PNG_USE_GLOBAL_ARRAYS */ + + +/* Inline macros to do direct reads of bytes from the input buffer. These + * require that you are using an architecture that uses PNG byte ordering + * (MSB first) and supports unaligned data storage. I think that PowerPC + * in big-endian mode and 680x0 are the only ones that will support this. + * The x86 line of processors definitely do not. The png_get_int_32() + * routine also assumes we are using two's complement format for negative + * values, which is almost certainly true. + */ +#if defined(PNG_READ_BIG_ENDIAN_SUPPORTED) +# if defined(PNG_pCAL_SUPPORTED) || defined(PNG_oFFs_SUPPORTED) +# define png_get_int_32(buf) ( *((png_int_32p) (buf))) +# endif +# define png_get_uint_32(buf) ( *((png_uint_32p) (buf))) +# define png_get_uint_16(buf) ( *((png_uint_16p) (buf))) +#else +# if defined(PNG_pCAL_SUPPORTED) || defined(PNG_oFFs_SUPPORTED) +PNG_EXTERN png_int_32 png_get_int_32 PNGARG((png_bytep buf)); +# endif +PNG_EXTERN png_uint_32 png_get_uint_32 PNGARG((png_bytep buf)); +PNG_EXTERN png_uint_16 png_get_uint_16 PNGARG((png_bytep buf)); +#endif /* !PNG_READ_BIG_ENDIAN_SUPPORTED */ + +/* Initialize png_ptr struct for reading, and allocate any other memory. + * (old interface - DEPRECATED - use png_create_read_struct instead). + */ +extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr)); +#undef png_read_init +#define png_read_init(png_ptr) png_read_init_3(&png_ptr, \ + PNG_LIBPNG_VER_STRING, sizeof(png_struct)); +extern PNG_EXPORT(void,png_read_init_3) PNGARG((png_structpp ptr_ptr, + png_const_charp user_png_ver, png_size_t png_struct_size)); +extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr, + png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t + png_info_size)); + +/* Initialize png_ptr struct for writing, and allocate any other memory. + * (old interface - DEPRECATED - use png_create_write_struct instead). + */ +extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr)); +#undef png_write_init +#define png_write_init(png_ptr) png_write_init_3(&png_ptr, \ + PNG_LIBPNG_VER_STRING, sizeof(png_struct)); +extern PNG_EXPORT(void,png_write_init_3) PNGARG((png_structpp ptr_ptr, + png_const_charp user_png_ver, png_size_t png_struct_size)); +extern PNG_EXPORT(void,png_write_init_2) PNGARG((png_structp png_ptr, + png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t + png_info_size)); + +/* Allocate memory for an internal libpng struct */ +PNG_EXTERN png_voidp png_create_struct PNGARG((int type)); + +/* Free memory from internal libpng struct */ +PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr)); + +PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr + malloc_fn, png_voidp mem_ptr)); +PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr, + png_free_ptr free_fn, png_voidp mem_ptr)); + +/* Free any memory that info_ptr points to and reset struct. */ +PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr, + png_infop info_ptr)); + +#ifndef PNG_1_0_X +/* Function to allocate memory for zlib. */ +PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size)); + +/* Function to free memory for zlib */ +PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr)); + +/* Next four functions are used internally as callbacks. PNGAPI is required + * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. */ + +PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr, + png_bytep data, png_size_t length)); + +#ifdef PNG_PROGRESSIVE_READ_SUPPORTED +PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr, + png_bytep buffer, png_size_t length)); +#endif + +PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr, + png_bytep data, png_size_t length)); + +#if defined(PNG_WRITE_FLUSH_SUPPORTED) +#if !defined(PNG_NO_STDIO) +PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr)); +#endif +#endif +#else /* PNG_1_0_X */ +#ifdef PNG_PROGRESSIVE_READ_SUPPORTED +PNG_EXTERN void png_push_fill_buffer PNGARG((png_structp png_ptr, + png_bytep buffer, png_size_t length)); +#endif +#endif /* PNG_1_0_X */ + +/* Reset the CRC variable */ +PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr)); + +/* Write the "data" buffer to whatever output you are using. */ +PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data, + png_size_t length)); + +/* Read data from whatever input you are using into the "data" buffer */ +PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data, + png_size_t length)); + +/* Read bytes into buf, and update png_ptr->crc */ +PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf, + png_size_t length)); + +/* Decompress data in a chunk that uses compression */ +#if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \ + defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) +PNG_EXTERN png_charp png_decompress_chunk PNGARG((png_structp png_ptr, + int comp_type, png_charp chunkdata, png_size_t chunklength, + png_size_t prefix_length, png_size_t *data_length)); +#endif + +/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */ +PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip)); + +/* Read the CRC from the file and compare it to the libpng calculated CRC */ +PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr)); + +/* Calculate the CRC over a section of data. Note that we are only + * passing a maximum of 64K on systems that have this as a memory limit, + * since this is the maximum buffer size we can specify. + */ +PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr, + png_size_t length)); + +#if defined(PNG_WRITE_FLUSH_SUPPORTED) +PNG_EXTERN void png_flush PNGARG((png_structp png_ptr)); +#endif + + +/* Place a 32-bit number into a buffer in PNG byte order (big-endian). + * The only currently known PNG chunks that use signed numbers are + * the ancillary extension chunks, oFFs and pCAL. + */ +PNG_EXTERN void png_save_uint_32 PNGARG((png_bytep buf, png_uint_32 i)); + +#if defined(PNG_WRITE_pCAL_SUPPORTED) || defined(PNG_WRITE_oFFs_SUPPORTED) +PNG_EXTERN void png_save_int_32 PNGARG((png_bytep buf, png_int_32 i)); +#endif + +/* Place a 16-bit number into a buffer in PNG byte order. + * The parameter is declared unsigned int, not png_uint_16, + * just to avoid potential problems on pre-ANSI C compilers. + */ +PNG_EXTERN void png_save_uint_16 PNGARG((png_bytep buf, unsigned int i)); + +/* simple function to write the signature */ +PNG_EXTERN void png_write_sig PNGARG((png_structp png_ptr)); + +/* write various chunks */ + +/* Write the IHDR chunk, and update the png_struct with the necessary + * information. + */ +PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width, + png_uint_32 height, + int bit_depth, int color_type, int compression_method, int filter_method, + int interlace_method)); + +PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette, + png_uint_32 num_pal)); + +PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data, + png_size_t length)); + +PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr)); + +#if defined(PNG_WRITE_gAMA_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma)); +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED +PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, png_fixed_point + file_gamma)); +#endif +#endif + +#if defined(PNG_WRITE_sBIT_SUPPORTED) +PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit, + int color_type)); +#endif + +#if defined(PNG_WRITE_cHRM_SUPPORTED) +#ifdef PNG_FLOATING_POINT_SUPPORTED +PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr, + double white_x, double white_y, + double red_x, double red_y, double green_x, double green_y, + double blue_x, double blue_y)); +#endif +#ifdef PNG_FIXED_POINT_SUPPORTED +PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr, + png_fixed_point int_white_x, png_fixed_point int_white_y, + png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point + int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, + png_fixed_point int_blue_y)); +#endif +#endif + +#if defined(PNG_WRITE_sRGB_SUPPORTED) +PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr, + int intent)); +#endif + +#if defined(PNG_WRITE_iCCP_SUPPORTED) +PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr, + png_charp name, int compression_type, + png_charp profile, int proflen)); + /* Note to maintainer: profile should be png_bytep */ +#endif + +#if defined(PNG_WRITE_sPLT_SUPPORTED) +PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr, + png_sPLT_tp palette)); +#endif + +#if defined(PNG_WRITE_tRNS_SUPPORTED) +PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans, + png_color_16p values, int number, int color_type)); +#endif + +#if defined(PNG_WRITE_bKGD_SUPPORTED) +PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr, + png_color_16p values, int color_type)); +#endif + +#if defined(PNG_WRITE_hIST_SUPPORTED) +PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist, + int num_hist)); +#endif + +#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \ + defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED) +PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr, + png_charp key, png_charpp new_key)); +#endif + +#if defined(PNG_WRITE_tEXt_SUPPORTED) +PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key, + png_charp text, png_size_t text_len)); +#endif + +#if defined(PNG_WRITE_zTXt_SUPPORTED) +PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key, + png_charp text, png_size_t text_len, int compression)); +#endif + +#if defined(PNG_WRITE_iTXt_SUPPORTED) +PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr, + int compression, png_charp key, png_charp lang, png_charp lang_key, + png_charp text)); +#endif + +#if defined(PNG_TEXT_SUPPORTED) /* Added at version 1.0.14 and 1.2.4 */ +PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr, + png_infop info_ptr, png_textp text_ptr, int num_text)); +#endif + +#if defined(PNG_WRITE_oFFs_SUPPORTED) +PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr, + png_int_32 x_offset, png_int_32 y_offset, int unit_type)); +#endif + +#if defined(PNG_WRITE_pCAL_SUPPORTED) +PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose, + png_int_32 X0, png_int_32 X1, int type, int nparams, + png_charp units, png_charpp params)); +#endif + +#if defined(PNG_WRITE_pHYs_SUPPORTED) +PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr, + png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, + int unit_type)); +#endif + +#if defined(PNG_WRITE_tIME_SUPPORTED) +PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr, + png_timep mod_time)); +#endif + +#if defined(PNG_WRITE_sCAL_SUPPORTED) +#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO) +PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr, + int unit, double width, double height)); +#else +#ifdef PNG_FIXED_POINT_SUPPORTED +PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr, + int unit, png_charp width, png_charp height)); +#endif +#endif +#endif + +/* Called when finished processing a row of data */ +PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr)); + +/* Internal use only. Called before first row of data */ +PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr)); + +#if defined(PNG_READ_GAMMA_SUPPORTED) +PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr)); +#endif + +/* combine a row of data, dealing with alpha, etc. if requested */ +PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row, + int mask)); + +#if defined(PNG_READ_INTERLACING_SUPPORTED) +/* expand an interlaced row */ +/* OLD pre-1.0.9 interface: +PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info, + png_bytep row, int pass, png_uint_32 transformations)); + */ +PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr)); +#endif + +/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */ + +#if defined(PNG_WRITE_INTERLACING_SUPPORTED) +/* grab pixels out of a row for an interlaced pass */ +PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info, + png_bytep row, int pass)); +#endif + +/* unfilter a row */ +PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr, + png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter)); + +/* Choose the best filter to use and filter the row data */ +PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr, + png_row_infop row_info)); + +/* Write out the filtered row. */ +PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr, + png_bytep filtered_row)); +/* finish a row while reading, dealing with interlacing passes, etc. */ +PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr)); + +/* initialize the row buffers, etc. */ +PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr)); +/* optional call to update the users info structure */ +PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr, + png_infop info_ptr)); + +/* these are the functions that do the transformations */ +#if defined(PNG_READ_FILLER_SUPPORTED) +PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info, + png_bytep row, png_uint_32 filler, png_uint_32 flags)); +#endif + +#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) +PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info, + png_bytep row)); +#endif + +#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) +PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info, + png_bytep row)); +#endif + +#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) +PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info, + png_bytep row)); +#endif + +#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) +PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info, + png_bytep row)); +#endif + +#if defined(PNG_WRITE_FILLER_SUPPORTED) || \ + defined(PNG_READ_STRIP_ALPHA_SUPPORTED) +PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info, + png_bytep row, png_uint_32 flags)); +#endif + +#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) +PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row)); +#endif + +#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED) +PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row)); +#endif + +#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) +PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop + row_info, png_bytep row)); +#endif + +#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED) +PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info, + png_bytep row)); +#endif + +#if defined(PNG_READ_PACK_SUPPORTED) +PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row)); +#endif + +#if defined(PNG_READ_SHIFT_SUPPORTED) +PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row, + png_color_8p sig_bits)); +#endif + +#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) +PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row)); +#endif + +#if defined(PNG_READ_16_TO_8_SUPPORTED) +PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row)); +#endif + +#if defined(PNG_READ_DITHER_SUPPORTED) +PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info, + png_bytep row, png_bytep palette_lookup, png_bytep dither_lookup)); + +# if defined(PNG_CORRECT_PALETTE_SUPPORTED) +PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr, + png_colorp palette, int num_palette)); +# endif +#endif + +#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) +PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row)); +#endif + +#if defined(PNG_WRITE_PACK_SUPPORTED) +PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info, + png_bytep row, png_uint_32 bit_depth)); +#endif + +#if defined(PNG_WRITE_SHIFT_SUPPORTED) +PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row, + png_color_8p bit_depth)); +#endif + +#if defined(PNG_READ_BACKGROUND_SUPPORTED) +#if defined(PNG_READ_GAMMA_SUPPORTED) +PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, + png_color_16p trans_values, png_color_16p background, + png_color_16p background_1, + png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1, + png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1, + png_uint_16pp gamma_16_to_1, int gamma_shift)); +#else +PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, + png_color_16p trans_values, png_color_16p background)); +#endif +#endif + +#if defined(PNG_READ_GAMMA_SUPPORTED) +PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row, + png_bytep gamma_table, png_uint_16pp gamma_16_table, + int gamma_shift)); +#endif + +#if defined(PNG_READ_EXPAND_SUPPORTED) +PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info, + png_bytep row, png_colorp palette, png_bytep trans, int num_trans)); +PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info, + png_bytep row, png_color_16p trans_value)); +#endif + +/* The following decodes the appropriate chunks, and does error correction, + * then calls the appropriate callback for the chunk if it is valid. + */ + +/* decode the IHDR chunk */ +PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); + +#if defined(PNG_READ_bKGD_SUPPORTED) +PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_cHRM_SUPPORTED) +PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_gAMA_SUPPORTED) +PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_hIST_SUPPORTED) +PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_iCCP_SUPPORTED) +extern void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif /* PNG_READ_iCCP_SUPPORTED */ + +#if defined(PNG_READ_iTXt_SUPPORTED) +PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_oFFs_SUPPORTED) +PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_pCAL_SUPPORTED) +PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_pHYs_SUPPORTED) +PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_sBIT_SUPPORTED) +PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_sCAL_SUPPORTED) +PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_sPLT_SUPPORTED) +extern void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif /* PNG_READ_sPLT_SUPPORTED */ + +#if defined(PNG_READ_sRGB_SUPPORTED) +PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_tEXt_SUPPORTED) +PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_tIME_SUPPORTED) +PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_tRNS_SUPPORTED) +PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +#if defined(PNG_READ_zTXt_SUPPORTED) +PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr, + png_uint_32 length)); +#endif + +PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 length)); + +PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr, + png_bytep chunk_name)); + +/* handle the transformations for reading and writing */ +PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr)); +PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr)); + +PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr)); + +#ifdef PNG_PROGRESSIVE_READ_SUPPORTED +PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr, + png_infop info_ptr)); +PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr, + png_infop info_ptr)); +PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr)); +PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr, + png_uint_32 length)); +PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr)); +PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr)); +PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr, + png_bytep buffer, png_size_t buffer_length)); +PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr)); +PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr, + png_bytep buffer, png_size_t buffer_length)); +PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr)); +PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 length)); +PNG_EXTERN void png_push_have_info PNGARG((png_structp png_ptr, + png_infop info_ptr)); +PNG_EXTERN void png_push_have_end PNGARG((png_structp png_ptr, + png_infop info_ptr)); +PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, png_bytep row)); +PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr, + png_infop info_ptr)); +PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr, + png_infop info_ptr)); +PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr)); +#if defined(PNG_READ_tEXt_SUPPORTED) +PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 length)); +PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr, + png_infop info_ptr)); +#endif +#if defined(PNG_READ_zTXt_SUPPORTED) +PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 length)); +PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr, + png_infop info_ptr)); +#endif +#if defined(PNG_READ_iTXt_SUPPORTED) +PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr, + png_infop info_ptr, png_uint_32 length)); +PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr, + png_infop info_ptr)); +#endif + +#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ + +#ifdef PNG_MNG_FEATURES_SUPPORTED +PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info, + png_bytep row)); +PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info, + png_bytep row)); +#endif + +#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) +/* png.c */ /* PRIVATE */ +PNG_EXTERN void png_init_mmx_flags PNGARG((png_structp png_ptr)); +#endif +/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */ + +#endif /* PNG_INTERNAL */ + +#ifdef __cplusplus +} +#endif + +#endif /* PNG_VERSION_INFO_ONLY */ +/* do not put anything past this line */ +#endif /* PNG_H */ diff --git a/engine/libs/pngconf.h b/engine/libs/pngconf.h new file mode 100644 index 000000000..2a52920e3 --- /dev/null +++ b/engine/libs/pngconf.h @@ -0,0 +1,1348 @@ +/* pngconf.h - machine configurable file for libpng + * + * libpng 1.2.4 - July 8, 2002 + * For conditions of distribution and use, see copyright notice in png.h + * Copyright (c) 1998-2002 Glenn Randers-Pehrson + * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) + * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) + */ + +/* Any machine specific code is near the front of this file, so if you + * are configuring libpng for a machine, you may want to read the section + * starting here down to where it starts to typedef png_color, png_text, + * and png_info. + */ + +#ifndef PNGCONF_H +#define PNGCONF_H + +/* This is the size of the compression buffer, and thus the size of + * an IDAT chunk. Make this whatever size you feel is best for your + * machine. One of these will be allocated per png_struct. When this + * is full, it writes the data to the disk, and does some other + * calculations. Making this an extremely small size will slow + * the library down, but you may want to experiment to determine + * where it becomes significant, if you are concerned with memory + * usage. Note that zlib allocates at least 32Kb also. For readers, + * this describes the size of the buffer available to read the data in. + * Unless this gets smaller than the size of a row (compressed), + * it should not make much difference how big this is. + */ + +#ifndef PNG_ZBUF_SIZE +# define PNG_ZBUF_SIZE 8192 +#endif + +/* Enable if you want a write-only libpng */ + +#ifndef PNG_NO_READ_SUPPORTED +# define PNG_READ_SUPPORTED +#endif + +/* Enable if you want a read-only libpng */ + +#ifndef PNG_NO_WRITE_SUPPORTED +# define PNG_WRITE_SUPPORTED +#endif + +/* Enabled by default in 1.2.0. You can disable this if you don't need to + support PNGs that are embedded in MNG datastreams */ +#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) +# ifndef PNG_MNG_FEATURES_SUPPORTED +# define PNG_MNG_FEATURES_SUPPORTED +# endif +#endif + +#ifndef PNG_NO_FLOATING_POINT_SUPPORTED +# ifndef PNG_FLOATING_POINT_SUPPORTED +# define PNG_FLOATING_POINT_SUPPORTED +# endif +#endif + +/* If you are running on a machine where you cannot allocate more + * than 64K of memory at once, uncomment this. While libpng will not + * normally need that much memory in a chunk (unless you load up a very + * large file), zlib needs to know how big of a chunk it can use, and + * libpng thus makes sure to check any memory allocation to verify it + * will fit into memory. +#define PNG_MAX_MALLOC_64K + */ +#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) +# define PNG_MAX_MALLOC_64K +#endif + +/* Special munging to support doing things the 'cygwin' way: + * 'Normal' png-on-win32 defines/defaults: + * PNG_BUILD_DLL -- building dll + * PNG_USE_DLL -- building an application, linking to dll + * (no define) -- building static library, or building an + * application and linking to the static lib + * 'Cygwin' defines/defaults: + * PNG_BUILD_DLL -- (ignored) building the dll + * (no define) -- (ignored) building an application, linking to the dll + * PNG_STATIC -- (ignored) building the static lib, or building an + * application that links to the static lib. + * ALL_STATIC -- (ignored) building various static libs, or building an + * application that links to the static libs. + * Thus, + * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and + * this bit of #ifdefs will define the 'correct' config variables based on + * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but + * unnecessary. + * + * Also, the precedence order is: + * ALL_STATIC (since we can't #undef something outside our namespace) + * PNG_BUILD_DLL + * PNG_STATIC + * (nothing) == PNG_USE_DLL + * + * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent + * of auto-import in binutils, we no longer need to worry about + * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, + * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes + * to __declspec() stuff. However, we DO need to worry about + * PNG_BUILD_DLL and PNG_STATIC because those change some defaults + * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. + */ +#if defined(__CYGWIN__) +# if defined(ALL_STATIC) +# if defined(PNG_BUILD_DLL) +# undef PNG_BUILD_DLL +# endif +# if defined(PNG_USE_DLL) +# undef PNG_USE_DLL +# endif +# if defined(PNG_DLL) +# undef PNG_DLL +# endif +# if !defined(PNG_STATIC) +# define PNG_STATIC +# endif +# else +# if defined (PNG_BUILD_DLL) +# if defined(PNG_STATIC) +# undef PNG_STATIC +# endif +# if defined(PNG_USE_DLL) +# undef PNG_USE_DLL +# endif +# if !defined(PNG_DLL) +# define PNG_DLL +# endif +# else +# if defined(PNG_STATIC) +# if defined(PNG_USE_DLL) +# undef PNG_USE_DLL +# endif +# if defined(PNG_DLL) +# undef PNG_DLL +# endif +# else +# if !defined(PNG_USE_DLL) +# define PNG_USE_DLL +# endif +# if !defined(PNG_DLL) +# define PNG_DLL +# endif +# endif +# endif +# endif +#endif + +/* This protects us against compilers that run on a windowing system + * and thus don't have or would rather us not use the stdio types: + * stdin, stdout, and stderr. The only one currently used is stderr + * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will + * prevent these from being compiled and used. #defining PNG_NO_STDIO + * will also prevent these, plus will prevent the entire set of stdio + * macros and functions (FILE *, printf, etc.) from being compiled and used, + * unless (PNG_DEBUG > 0) has been #defined. + * + * #define PNG_NO_CONSOLE_IO + * #define PNG_NO_STDIO + */ + +#if defined(_WIN32_WCE) +# include + /* Console I/O functions are not supported on WindowsCE */ +# define PNG_NO_CONSOLE_IO +# ifdef PNG_DEBUG +# undef PNG_DEBUG +# endif +#endif + +#ifdef PNG_BUILD_DLL +# ifndef PNG_CONSOLE_IO_SUPPORTED +# ifndef PNG_NO_CONSOLE_IO +# define PNG_NO_CONSOLE_IO +# endif +# endif +#endif + +# ifdef PNG_NO_STDIO +# ifndef PNG_NO_CONSOLE_IO +# define PNG_NO_CONSOLE_IO +# endif +# ifdef PNG_DEBUG +# if (PNG_DEBUG > 0) +# include +# endif +# endif +# else +# if !defined(_WIN32_WCE) +/* "stdio.h" functions are not supported on WindowsCE */ +# include +# endif +# endif + +/* This macro protects us against machines that don't have function + * prototypes (ie K&R style headers). If your compiler does not handle + * function prototypes, define this macro and use the included ansi2knr. + * I've always been able to use _NO_PROTO as the indicator, but you may + * need to drag the empty declaration out in front of here, or change the + * ifdef to suit your own needs. + */ +#ifndef PNGARG + +#ifdef OF /* zlib prototype munger */ +# define PNGARG(arglist) OF(arglist) +#else + +#ifdef _NO_PROTO +# define PNGARG(arglist) () +# ifndef PNG_TYPECAST_NULL +# define PNG_TYPECAST_NULL +# endif +#else +# define PNGARG(arglist) arglist +#endif /* _NO_PROTO */ + +#endif /* OF */ + +#endif /* PNGARG */ + +/* Try to determine if we are compiling on a Mac. Note that testing for + * just __MWERKS__ is not good enough, because the Codewarrior is now used + * on non-Mac platforms. + */ +#ifndef MACOS +# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ + defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) +# define MACOS +# endif +#endif + +/* enough people need this for various reasons to include it here */ +#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) +# include +#endif + +#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) +# define PNG_SETJMP_SUPPORTED +#endif + +#ifdef PNG_SETJMP_SUPPORTED +/* This is an attempt to force a single setjmp behaviour on Linux. If + * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. + */ + +# ifdef __linux__ +# ifdef _BSD_SOURCE +# define PNG_SAVE_BSD_SOURCE +# undef _BSD_SOURCE +# endif +# ifdef _SETJMP_H + __png.h__ already includes setjmp.h; + __dont__ include it again.; +# endif +# endif /* __linux__ */ + + /* include setjmp.h for error handling */ +# include + +# ifdef __linux__ +# ifdef PNG_SAVE_BSD_SOURCE +# define _BSD_SOURCE +# undef PNG_SAVE_BSD_SOURCE +# endif +# endif /* __linux__ */ +#endif /* PNG_SETJMP_SUPPORTED */ + +#ifdef BSD +# include +#else +# include +#endif + +/* Other defines for things like memory and the like can go here. */ +#ifdef PNG_INTERNAL + +#include + +/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which + * aren't usually used outside the library (as far as I know), so it is + * debatable if they should be exported at all. In the future, when it is + * possible to have run-time registry of chunk-handling functions, some of + * these will be made available again. +#define PNG_EXTERN extern + */ +#define PNG_EXTERN + +/* Other defines specific to compilers can go here. Try to keep + * them inside an appropriate ifdef/endif pair for portability. + */ + +#if defined(PNG_FLOATING_POINT_SUPPORTED) +# if defined(MACOS) + /* We need to check that hasn't already been included earlier + * as it seems it doesn't agree with , yet we should really use + * if possible. + */ +# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) +# include +# endif +# else +# include +# endif +# if defined(_AMIGA) && defined(__SASC) && defined(_M68881) + /* Amiga SAS/C: We must include builtin FPU functions when compiling using + * MATH=68881 + */ +# include +# endif +#endif + +/* Codewarrior on NT has linking problems without this. */ +#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) +# define PNG_ALWAYS_EXTERN +#endif + +/* For some reason, Borland C++ defines memcmp, etc. in mem.h, not + * stdlib.h like it should (I think). Or perhaps this is a C++ + * "feature"? + */ +#ifdef __TURBOC__ +# include +# include "alloc.h" +#endif + +#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ + defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) +# include +#endif + +/* This controls how fine the dithering gets. As this allocates + * a largish chunk of memory (32K), those who are not as concerned + * with dithering quality can decrease some or all of these. + */ +#ifndef PNG_DITHER_RED_BITS +# define PNG_DITHER_RED_BITS 5 +#endif +#ifndef PNG_DITHER_GREEN_BITS +# define PNG_DITHER_GREEN_BITS 5 +#endif +#ifndef PNG_DITHER_BLUE_BITS +# define PNG_DITHER_BLUE_BITS 5 +#endif + +/* This controls how fine the gamma correction becomes when you + * are only interested in 8 bits anyway. Increasing this value + * results in more memory being used, and more pow() functions + * being called to fill in the gamma tables. Don't set this value + * less then 8, and even that may not work (I haven't tested it). + */ + +#ifndef PNG_MAX_GAMMA_8 +# define PNG_MAX_GAMMA_8 11 +#endif + +/* This controls how much a difference in gamma we can tolerate before + * we actually start doing gamma conversion. + */ +#ifndef PNG_GAMMA_THRESHOLD +# define PNG_GAMMA_THRESHOLD 0.05 +#endif + +#endif /* PNG_INTERNAL */ + +/* The following uses const char * instead of char * for error + * and warning message functions, so some compilers won't complain. + * If you do not want to use const, define PNG_NO_CONST here. + */ + +#ifndef PNG_NO_CONST +# define PNG_CONST const +#else +# define PNG_CONST +#endif + +/* The following defines give you the ability to remove code from the + * library that you will not be using. I wish I could figure out how to + * automate this, but I can't do that without making it seriously hard + * on the users. So if you are not using an ability, change the #define + * to and #undef, and that part of the library will not be compiled. If + * your linker can't find a function, you may want to make sure the + * ability is defined here. Some of these depend upon some others being + * defined. I haven't figured out all the interactions here, so you may + * have to experiment awhile to get everything to compile. If you are + * creating or using a shared library, you probably shouldn't touch this, + * as it will affect the size of the structures, and this will cause bad + * things to happen if the library and/or application ever change. + */ + +/* Any features you will not be using can be undef'ed here */ + +/* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user + * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS + * on the compile line, then pick and choose which ones to define without + * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED + * if you only want to have a png-compliant reader/writer but don't need + * any of the extra transformations. This saves about 80 kbytes in a + * typical installation of the library. (PNG_NO_* form added in version + * 1.0.1c, for consistency) + */ + +/* The size of the png_text structure changed in libpng-1.0.6 when + * iTXt is supported. It is turned off by default, to support old apps + * that malloc the png_text structure instead of calling png_set_text() + * and letting libpng malloc it. It will be turned on by default in + * libpng-1.3.0. + */ + +#ifndef PNG_iTXt_SUPPORTED +# if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) +# define PNG_NO_READ_iTXt +# endif +# if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) +# define PNG_NO_WRITE_iTXt +# endif +#endif + +/* The following support, added after version 1.0.0, can be turned off here en + * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility + * with old applications that require the length of png_struct and png_info + * to remain unchanged. + */ + +#ifdef PNG_LEGACY_SUPPORTED +# define PNG_NO_FREE_ME +# define PNG_NO_READ_UNKNOWN_CHUNKS +# define PNG_NO_WRITE_UNKNOWN_CHUNKS +# define PNG_NO_READ_USER_CHUNKS +# define PNG_NO_READ_iCCP +# define PNG_NO_WRITE_iCCP +# define PNG_NO_READ_iTXt +# define PNG_NO_WRITE_iTXt +# define PNG_NO_READ_sCAL +# define PNG_NO_WRITE_sCAL +# define PNG_NO_READ_sPLT +# define PNG_NO_WRITE_sPLT +# define PNG_NO_INFO_IMAGE +# define PNG_NO_READ_RGB_TO_GRAY +# define PNG_NO_READ_USER_TRANSFORM +# define PNG_NO_WRITE_USER_TRANSFORM +# define PNG_NO_USER_MEM +# define PNG_NO_READ_EMPTY_PLTE +# define PNG_NO_MNG_FEATURES +# define PNG_NO_FIXED_POINT_SUPPORTED +#endif + +/* Ignore attempt to turn off both floating and fixed point support */ +#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ + !defined(PNG_NO_FIXED_POINT_SUPPORTED) +# define PNG_FIXED_POINT_SUPPORTED +#endif + +#ifndef PNG_NO_FREE_ME +# define PNG_FREE_ME_SUPPORTED +#endif + +#if defined(PNG_READ_SUPPORTED) + +#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ + !defined(PNG_NO_READ_TRANSFORMS) +# define PNG_READ_TRANSFORMS_SUPPORTED +#endif + +#ifdef PNG_READ_TRANSFORMS_SUPPORTED +# ifndef PNG_NO_READ_EXPAND +# define PNG_READ_EXPAND_SUPPORTED +# endif +# ifndef PNG_NO_READ_SHIFT +# define PNG_READ_SHIFT_SUPPORTED +# endif +# ifndef PNG_NO_READ_PACK +# define PNG_READ_PACK_SUPPORTED +# endif +# ifndef PNG_NO_READ_BGR +# define PNG_READ_BGR_SUPPORTED +# endif +# ifndef PNG_NO_READ_SWAP +# define PNG_READ_SWAP_SUPPORTED +# endif +# ifndef PNG_NO_READ_PACKSWAP +# define PNG_READ_PACKSWAP_SUPPORTED +# endif +# ifndef PNG_NO_READ_INVERT +# define PNG_READ_INVERT_SUPPORTED +# endif +# ifndef PNG_NO_READ_DITHER +# define PNG_READ_DITHER_SUPPORTED +# endif +# ifndef PNG_NO_READ_BACKGROUND +# define PNG_READ_BACKGROUND_SUPPORTED +# endif +# ifndef PNG_NO_READ_16_TO_8 +# define PNG_READ_16_TO_8_SUPPORTED +# endif +# ifndef PNG_NO_READ_FILLER +# define PNG_READ_FILLER_SUPPORTED +# endif +# ifndef PNG_NO_READ_GAMMA +# define PNG_READ_GAMMA_SUPPORTED +# endif +# ifndef PNG_NO_READ_GRAY_TO_RGB +# define PNG_READ_GRAY_TO_RGB_SUPPORTED +# endif +# ifndef PNG_NO_READ_SWAP_ALPHA +# define PNG_READ_SWAP_ALPHA_SUPPORTED +# endif +# ifndef PNG_NO_READ_INVERT_ALPHA +# define PNG_READ_INVERT_ALPHA_SUPPORTED +# endif +# ifndef PNG_NO_READ_STRIP_ALPHA +# define PNG_READ_STRIP_ALPHA_SUPPORTED +# endif +# ifndef PNG_NO_READ_USER_TRANSFORM +# define PNG_READ_USER_TRANSFORM_SUPPORTED +# endif +# ifndef PNG_NO_READ_RGB_TO_GRAY +# define PNG_READ_RGB_TO_GRAY_SUPPORTED +# endif +#endif /* PNG_READ_TRANSFORMS_SUPPORTED */ + +#if !defined(PNG_NO_PROGRESSIVE_READ) && \ + !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ +# define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ +#endif /* about interlacing capability! You'll */ + /* still have interlacing unless you change the following line: */ + +#define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */ + +#ifndef PNG_NO_READ_COMPOSITE_NODIV +# ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ +# define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ +# endif +#endif + +/* Deprecated, will be removed from version 2.0.0. + Use PNG_MNG_FEATURES_SUPPORTED instead. */ +#ifndef PNG_NO_READ_EMPTY_PLTE +# define PNG_READ_EMPTY_PLTE_SUPPORTED +#endif + +#endif /* PNG_READ_SUPPORTED */ + +#if defined(PNG_WRITE_SUPPORTED) + +# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ + !defined(PNG_NO_WRITE_TRANSFORMS) +# define PNG_WRITE_TRANSFORMS_SUPPORTED +#endif + +#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED +# ifndef PNG_NO_WRITE_SHIFT +# define PNG_WRITE_SHIFT_SUPPORTED +# endif +# ifndef PNG_NO_WRITE_PACK +# define PNG_WRITE_PACK_SUPPORTED +# endif +# ifndef PNG_NO_WRITE_BGR +# define PNG_WRITE_BGR_SUPPORTED +# endif +# ifndef PNG_NO_WRITE_SWAP +# define PNG_WRITE_SWAP_SUPPORTED +# endif +# ifndef PNG_NO_WRITE_PACKSWAP +# define PNG_WRITE_PACKSWAP_SUPPORTED +# endif +# ifndef PNG_NO_WRITE_INVERT +# define PNG_WRITE_INVERT_SUPPORTED +# endif +# ifndef PNG_NO_WRITE_FILLER +# define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ +# endif +# ifndef PNG_NO_WRITE_SWAP_ALPHA +# define PNG_WRITE_SWAP_ALPHA_SUPPORTED +# endif +# ifndef PNG_NO_WRITE_INVERT_ALPHA +# define PNG_WRITE_INVERT_ALPHA_SUPPORTED +# endif +# ifndef PNG_NO_WRITE_USER_TRANSFORM +# define PNG_WRITE_USER_TRANSFORM_SUPPORTED +# endif +#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ + +#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ + defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) +# ifndef PNG_NO_USER_TRANSFORM_PTR +# define PNG_USER_TRANSFORM_PTR_SUPPORTED +# endif +#endif + +#define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant + encoders, but can cause trouble + if left undefined */ + +#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ + defined(PNG_FLOATING_POINT_SUPPORTED) +# define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED +#endif + +#ifndef PNG_1_0_X +#ifndef PNG_NO_ERROR_NUMBERS +#define PNG_ERROR_NUMBERS_SUPPORTED +#endif +#endif /* PNG_1_0_X */ + +#ifndef PNG_NO_WRITE_FLUSH +# define PNG_WRITE_FLUSH_SUPPORTED +#endif + +/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ +#ifndef PNG_NO_WRITE_EMPTY_PLTE +# define PNG_WRITE_EMPTY_PLTE_SUPPORTED +#endif + +#endif /* PNG_WRITE_SUPPORTED */ + +#ifndef PNG_NO_STDIO +# define PNG_TIME_RFC1123_SUPPORTED +#endif + +/* This adds extra functions in pngget.c for accessing data from the + * info pointer (added in version 0.99) + * png_get_image_width() + * png_get_image_height() + * png_get_bit_depth() + * png_get_color_type() + * png_get_compression_type() + * png_get_filter_type() + * png_get_interlace_type() + * png_get_pixel_aspect_ratio() + * png_get_pixels_per_meter() + * png_get_x_offset_pixels() + * png_get_y_offset_pixels() + * png_get_x_offset_microns() + * png_get_y_offset_microns() + */ +#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) +# define PNG_EASY_ACCESS_SUPPORTED +#endif + +/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 + even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */ +#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) +# ifndef PNG_ASSEMBLER_CODE_SUPPORTED +# define PNG_ASSEMBLER_CODE_SUPPORTED +# endif +# if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) +# define PNG_MMX_CODE_SUPPORTED +# endif +#endif + +/* If you are sure that you don't need thread safety and you are compiling + with PNG_USE_PNGCCRD for an MMX application, you can define this for + faster execution. See pnggccrd.c. +#define PNG_THREAD_UNSAFE_OK +*/ + +#if !defined(PNG_1_0_X) +#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) +# define PNG_USER_MEM_SUPPORTED +#endif +#endif /* PNG_1_0_X */ + +/* These are currently experimental features, define them if you want */ + +/* very little testing */ +/* +#ifdef PNG_READ_SUPPORTED +# ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED +# define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED +# endif +#endif +*/ + +/* This is only for PowerPC big-endian and 680x0 systems */ +/* some testing */ +/* +#ifdef PNG_READ_SUPPORTED +# ifndef PNG_PNG_READ_BIG_ENDIAN_SUPPORTED +# define PNG_READ_BIG_ENDIAN_SUPPORTED +# endif +#endif +*/ + +/* Buggy compilers (e.g., gcc 2.7.2.2) need this */ +/* +#define PNG_NO_POINTER_INDEXING +*/ + +/* These functions are turned off by default, as they will be phased out. */ +/* +#define PNG_USELESS_TESTS_SUPPORTED +#define PNG_CORRECT_PALETTE_SUPPORTED +*/ + +/* Any chunks you are not interested in, you can undef here. The + * ones that allocate memory may be expecially important (hIST, + * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info + * a bit smaller. + */ + +#if defined(PNG_READ_SUPPORTED) && \ + !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ + !defined(PNG_NO_READ_ANCILLARY_CHUNKS) +# define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED +#endif + +#if defined(PNG_WRITE_SUPPORTED) && \ + !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ + !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) +# define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED +#endif + +#ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED + +#ifdef PNG_NO_READ_TEXT +# define PNG_NO_READ_iTXt +# define PNG_NO_READ_tEXt +# define PNG_NO_READ_zTXt +#endif +#ifndef PNG_NO_READ_bKGD +# define PNG_READ_bKGD_SUPPORTED +# define PNG_bKGD_SUPPORTED +#endif +#ifndef PNG_NO_READ_cHRM +# define PNG_READ_cHRM_SUPPORTED +# define PNG_cHRM_SUPPORTED +#endif +#ifndef PNG_NO_READ_gAMA +# define PNG_READ_gAMA_SUPPORTED +# define PNG_gAMA_SUPPORTED +#endif +#ifndef PNG_NO_READ_hIST +# define PNG_READ_hIST_SUPPORTED +# define PNG_hIST_SUPPORTED +#endif +#ifndef PNG_NO_READ_iCCP +# define PNG_READ_iCCP_SUPPORTED +# define PNG_iCCP_SUPPORTED +#endif +#ifndef PNG_NO_READ_iTXt +# ifndef PNG_READ_iTXt_SUPPORTED +# define PNG_READ_iTXt_SUPPORTED +# endif +# ifndef PNG_iTXt_SUPPORTED +# define PNG_iTXt_SUPPORTED +# endif +#endif +#ifndef PNG_NO_READ_oFFs +# define PNG_READ_oFFs_SUPPORTED +# define PNG_oFFs_SUPPORTED +#endif +#ifndef PNG_NO_READ_pCAL +# define PNG_READ_pCAL_SUPPORTED +# define PNG_pCAL_SUPPORTED +#endif +#ifndef PNG_NO_READ_sCAL +# define PNG_READ_sCAL_SUPPORTED +# define PNG_sCAL_SUPPORTED +#endif +#ifndef PNG_NO_READ_pHYs +# define PNG_READ_pHYs_SUPPORTED +# define PNG_pHYs_SUPPORTED +#endif +#ifndef PNG_NO_READ_sBIT +# define PNG_READ_sBIT_SUPPORTED +# define PNG_sBIT_SUPPORTED +#endif +#ifndef PNG_NO_READ_sPLT +# define PNG_READ_sPLT_SUPPORTED +# define PNG_sPLT_SUPPORTED +#endif +#ifndef PNG_NO_READ_sRGB +# define PNG_READ_sRGB_SUPPORTED +# define PNG_sRGB_SUPPORTED +#endif +#ifndef PNG_NO_READ_tEXt +# define PNG_READ_tEXt_SUPPORTED +# define PNG_tEXt_SUPPORTED +#endif +#ifndef PNG_NO_READ_tIME +# define PNG_READ_tIME_SUPPORTED +# define PNG_tIME_SUPPORTED +#endif +#ifndef PNG_NO_READ_tRNS +# define PNG_READ_tRNS_SUPPORTED +# define PNG_tRNS_SUPPORTED +#endif +#ifndef PNG_NO_READ_zTXt +# define PNG_READ_zTXt_SUPPORTED +# define PNG_zTXt_SUPPORTED +#endif +#ifndef PNG_NO_READ_UNKNOWN_CHUNKS +# define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED +# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED +# define PNG_UNKNOWN_CHUNKS_SUPPORTED +# endif +# ifndef PNG_NO_HANDLE_AS_UNKNOWN +# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED +# endif +#endif +#if !defined(PNG_NO_READ_USER_CHUNKS) && \ + defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) +# define PNG_READ_USER_CHUNKS_SUPPORTED +# define PNG_USER_CHUNKS_SUPPORTED +# ifdef PNG_NO_READ_UNKNOWN_CHUNKS +# undef PNG_NO_READ_UNKNOWN_CHUNKS +# endif +# ifdef PNG_NO_HANDLE_AS_UNKNOWN +# undef PNG_NO_HANDLE_AS_UNKNOWN +# endif +#endif +#ifndef PNG_NO_READ_OPT_PLTE +# define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ +#endif /* optional PLTE chunk in RGB and RGBA images */ +#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ + defined(PNG_READ_zTXt_SUPPORTED) +# define PNG_READ_TEXT_SUPPORTED +# define PNG_TEXT_SUPPORTED +#endif + +#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ + +#ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED + +#ifdef PNG_NO_WRITE_TEXT +# define PNG_NO_WRITE_iTXt +# define PNG_NO_WRITE_tEXt +# define PNG_NO_WRITE_zTXt +#endif +#ifndef PNG_NO_WRITE_bKGD +# define PNG_WRITE_bKGD_SUPPORTED +# ifndef PNG_bKGD_SUPPORTED +# define PNG_bKGD_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_cHRM +# define PNG_WRITE_cHRM_SUPPORTED +# ifndef PNG_cHRM_SUPPORTED +# define PNG_cHRM_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_gAMA +# define PNG_WRITE_gAMA_SUPPORTED +# ifndef PNG_gAMA_SUPPORTED +# define PNG_gAMA_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_hIST +# define PNG_WRITE_hIST_SUPPORTED +# ifndef PNG_hIST_SUPPORTED +# define PNG_hIST_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_iCCP +# define PNG_WRITE_iCCP_SUPPORTED +# ifndef PNG_iCCP_SUPPORTED +# define PNG_iCCP_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_iTXt +# ifndef PNG_WRITE_iTXt_SUPPORTED +# define PNG_WRITE_iTXt_SUPPORTED +# endif +# ifndef PNG_iTXt_SUPPORTED +# define PNG_iTXt_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_oFFs +# define PNG_WRITE_oFFs_SUPPORTED +# ifndef PNG_oFFs_SUPPORTED +# define PNG_oFFs_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_pCAL +# define PNG_WRITE_pCAL_SUPPORTED +# ifndef PNG_pCAL_SUPPORTED +# define PNG_pCAL_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_sCAL +# define PNG_WRITE_sCAL_SUPPORTED +# ifndef PNG_sCAL_SUPPORTED +# define PNG_sCAL_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_pHYs +# define PNG_WRITE_pHYs_SUPPORTED +# ifndef PNG_pHYs_SUPPORTED +# define PNG_pHYs_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_sBIT +# define PNG_WRITE_sBIT_SUPPORTED +# ifndef PNG_sBIT_SUPPORTED +# define PNG_sBIT_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_sPLT +# define PNG_WRITE_sPLT_SUPPORTED +# ifndef PNG_sPLT_SUPPORTED +# define PNG_sPLT_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_sRGB +# define PNG_WRITE_sRGB_SUPPORTED +# ifndef PNG_sRGB_SUPPORTED +# define PNG_sRGB_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_tEXt +# define PNG_WRITE_tEXt_SUPPORTED +# ifndef PNG_tEXt_SUPPORTED +# define PNG_tEXt_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_tIME +# define PNG_WRITE_tIME_SUPPORTED +# ifndef PNG_tIME_SUPPORTED +# define PNG_tIME_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_tRNS +# define PNG_WRITE_tRNS_SUPPORTED +# ifndef PNG_tRNS_SUPPORTED +# define PNG_tRNS_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_zTXt +# define PNG_WRITE_zTXt_SUPPORTED +# ifndef PNG_zTXt_SUPPORTED +# define PNG_zTXt_SUPPORTED +# endif +#endif +#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS +# define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED +# ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED +# define PNG_UNKNOWN_CHUNKS_SUPPORTED +# endif +# ifndef PNG_NO_HANDLE_AS_UNKNOWN +# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED +# define PNG_HANDLE_AS_UNKNOWN_SUPPORTED +# endif +# endif +#endif +#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ + defined(PNG_WRITE_zTXt_SUPPORTED) +# define PNG_WRITE_TEXT_SUPPORTED +# ifndef PNG_TEXT_SUPPORTED +# define PNG_TEXT_SUPPORTED +# endif +#endif + +#endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ + +/* Turn this off to disable png_read_png() and + * png_write_png() and leave the row_pointers member + * out of the info structure. + */ +#ifndef PNG_NO_INFO_IMAGE +# define PNG_INFO_IMAGE_SUPPORTED +#endif + +/* need the time information for reading tIME chunks */ +#if defined(PNG_tIME_SUPPORTED) +# if !defined(_WIN32_WCE) + /* "time.h" functions are not supported on WindowsCE */ +# include +# endif +#endif + +/* Some typedefs to get us started. These should be safe on most of the + * common platforms. The typedefs should be at least as large as the + * numbers suggest (a png_uint_32 must be at least 32 bits long), but they + * don't have to be exactly that size. Some compilers dislike passing + * unsigned shorts as function parameters, so you may be better off using + * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may + * want to have unsigned int for png_uint_32 instead of unsigned long. + */ + +typedef unsigned long png_uint_32; +typedef long png_int_32; +typedef unsigned short png_uint_16; +typedef short png_int_16; +typedef unsigned char png_byte; + +/* This is usually size_t. It is typedef'ed just in case you need it to + change (I'm not sure if you will or not, so I thought I'd be safe) */ +typedef size_t png_size_t; + +/* The following is needed for medium model support. It cannot be in the + * PNG_INTERNAL section. Needs modification for other compilers besides + * MSC. Model independent support declares all arrays and pointers to be + * large using the far keyword. The zlib version used must also support + * model independent data. As of version zlib 1.0.4, the necessary changes + * have been made in zlib. The USE_FAR_KEYWORD define triggers other + * changes that are needed. (Tim Wegner) + */ + +/* Separate compiler dependencies (problem here is that zlib.h always + defines FAR. (SJT) */ +#ifdef __BORLANDC__ +# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) +# define LDATA 1 +# else +# define LDATA 0 +# endif + /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ +# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) +# define PNG_MAX_MALLOC_64K +# if (LDATA != 1) +# ifndef FAR +# define FAR __far +# endif +# define USE_FAR_KEYWORD +# endif /* LDATA != 1 */ + /* Possibly useful for moving data out of default segment. + * Uncomment it if you want. Could also define FARDATA as + * const if your compiler supports it. (SJT) +# define FARDATA FAR + */ +# endif /* __WIN32__, __FLAT__, __CYGWIN__ */ +#endif /* __BORLANDC__ */ + + +/* Suggest testing for specific compiler first before testing for + * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, + * making reliance oncertain keywords suspect. (SJT) + */ + +/* MSC Medium model */ +#if defined(FAR) +# if defined(M_I86MM) +# define USE_FAR_KEYWORD +# define FARDATA FAR +# include +# endif +#endif + +/* SJT: default case */ +#ifndef FAR +# define FAR +#endif + +/* At this point FAR is always defined */ +#ifndef FARDATA +# define FARDATA +#endif + +/* Typedef for floating-point numbers that are converted + to fixed-point with a multiple of 100,000, e.g., int_gamma */ +typedef png_int_32 png_fixed_point; + +/* Add typedefs for pointers */ +typedef void FAR * png_voidp; +typedef png_byte FAR * png_bytep; +typedef png_uint_32 FAR * png_uint_32p; +typedef png_int_32 FAR * png_int_32p; +typedef png_uint_16 FAR * png_uint_16p; +typedef png_int_16 FAR * png_int_16p; +typedef PNG_CONST char FAR * png_const_charp; +typedef char FAR * png_charp; +typedef png_fixed_point FAR * png_fixed_point_p; + +#ifndef PNG_NO_STDIO +#if defined(_WIN32_WCE) +typedef HANDLE png_FILE_p; +#else +typedef FILE * png_FILE_p; +#endif +#endif + +#ifdef PNG_FLOATING_POINT_SUPPORTED +typedef double FAR * png_doublep; +#endif + +/* Pointers to pointers; i.e. arrays */ +typedef png_byte FAR * FAR * png_bytepp; +typedef png_uint_32 FAR * FAR * png_uint_32pp; +typedef png_int_32 FAR * FAR * png_int_32pp; +typedef png_uint_16 FAR * FAR * png_uint_16pp; +typedef png_int_16 FAR * FAR * png_int_16pp; +typedef PNG_CONST char FAR * FAR * png_const_charpp; +typedef char FAR * FAR * png_charpp; +typedef png_fixed_point FAR * FAR * png_fixed_point_pp; +#ifdef PNG_FLOATING_POINT_SUPPORTED +typedef double FAR * FAR * png_doublepp; +#endif + +/* Pointers to pointers to pointers; i.e., pointer to array */ +typedef char FAR * FAR * FAR * png_charppp; + +/* libpng typedefs for types in zlib. If zlib changes + * or another compression library is used, then change these. + * Eliminates need to change all the source files. + */ +typedef charf * png_zcharp; +typedef charf * FAR * png_zcharpp; +typedef z_stream FAR * png_zstreamp; + +/* + * Define PNG_BUILD_DLL if the module being built is a Windows + * LIBPNG DLL. + * + * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. + * It is equivalent to Microsoft predefined macro _DLL that is + * automatically defined when you compile using the share + * version of the CRT (C Run-Time library) + * + * The cygwin mods make this behavior a little different: + * Define PNG_BUILD_DLL if you are building a dll for use with cygwin + * Define PNG_STATIC if you are building a static library for use with cygwin, + * -or- if you are building an application that you want to link to the + * static library. + * PNG_USE_DLL is defined by default (no user action needed) unless one of + * the other flags is defined. + */ + +#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) +# define PNG_DLL +#endif +/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. + * When building a static lib, default to no GLOBAL ARRAYS, but allow + * command-line override + */ +#if defined(__CYGWIN__) +# if !defined(PNG_STATIC) +# if defined(PNG_USE_GLOBAL_ARRAYS) +# undef PNG_USE_GLOBAL_ARRAYS +# endif +# if !defined(PNG_USE_LOCAL_ARRAYS) +# define PNG_USE_LOCAL_ARRAYS +# endif +# else +# if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) +# if defined(PNG_USE_GLOBAL_ARRAYS) +# undef PNG_USE_GLOBAL_ARRAYS +# endif +# endif +# endif +# if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) +# define PNG_USE_LOCAL_ARRAYS +# endif +#endif + +/* Do not use global arrays (helps with building DLL's) + * They are no longer used in libpng itself, since version 1.0.5c, + * but might be required for some pre-1.0.5c applications. + */ +#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) +# if defined(PNG_NO_GLOBAL_ARRAYS) || (defined(__GNUC__) && defined(PNG_DLL)) +# define PNG_USE_LOCAL_ARRAYS +# else +# define PNG_USE_GLOBAL_ARRAYS +# endif +#endif + +#if defined(__CYGWIN__) +# undef PNGAPI +# define PNGAPI __cdecl +# undef PNG_IMPEXP +# define PNG_IMPEXP +#endif + +/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", + * you may get warnings regarding the linkage of png_zalloc and png_zfree. + * Don't ignore those warnings; you must also reset the default calling + * convention in your compiler to match your PNGAPI, and you must build + * zlib and your applications the same way you build libpng. + */ + +#ifndef PNGAPI + +#if defined(__MINGW32__) && !defined(PNG_MODULEDEF) +# ifndef PNG_NO_MODULEDEF +# define PNG_NO_MODULEDEF +# endif +#endif + +#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) +# define PNG_IMPEXP +#endif + +#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ + (( defined(_Windows) || defined(_WINDOWS) || \ + defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) + +# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) +# define PNGAPI __cdecl +# else +# define PNGAPI _cdecl +# endif + +# if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ + 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) +# define PNG_IMPEXP +# endif + +# if !defined(PNG_IMPEXP) + +# define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol +# define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol + + /* Borland/Microsoft */ +# if defined(_MSC_VER) || defined(__BORLANDC__) +# if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) +# define PNG_EXPORT PNG_EXPORT_TYPE1 +# else +# define PNG_EXPORT PNG_EXPORT_TYPE2 +# if defined(PNG_BUILD_DLL) +# define PNG_IMPEXP __export +# else +# define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in + VC++ */ +# endif /* Exists in Borland C++ for + C++ classes (== huge) */ +# endif +# endif + +# if !defined(PNG_IMPEXP) +# if defined(PNG_BUILD_DLL) +# define PNG_IMPEXP __declspec(dllexport) +# else +# define PNG_IMPEXP __declspec(dllimport) +# endif +# endif +# endif /* PNG_IMPEXP */ +#else /* !(DLL || non-cygwin WINDOWS) */ +# if (defined(__IBMC__) || defined(IBMCPP__)) && defined(__OS2__) +# define PNGAPI _System +# define PNG_IMPEXP +# else +# if 0 /* ... other platforms, with other meanings */ +# else +# define PNGAPI +# define PNG_IMPEXP +# endif +# endif +#endif +#endif + +#ifndef PNGAPI +# define PNGAPI +#endif +#ifndef PNG_IMPEXP +# define PNG_IMPEXP +#endif + +#ifndef PNG_EXPORT +# define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol +#endif + +#ifdef PNG_USE_GLOBAL_ARRAYS +# ifndef PNG_EXPORT_VAR +# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type +# endif +#endif + +/* User may want to use these so they are not in PNG_INTERNAL. Any library + * functions that are passed far data must be model independent. + */ + +#ifndef PNG_ABORT +# define PNG_ABORT() abort() +#endif + +#ifdef PNG_SETJMP_SUPPORTED +# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) +#else +# define png_jmpbuf(png_ptr) \ + (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) +#endif + +#if defined(USE_FAR_KEYWORD) /* memory model independent fns */ +/* use this to make far-to-near assignments */ +# define CHECK 1 +# define NOCHECK 0 +# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) +# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) +# define png_strcpy _fstrcpy +# define png_strlen _fstrlen +# define png_memcmp _fmemcmp /* SJT: added */ +# define png_memcpy _fmemcpy +# define png_memset _fmemset +#else /* use the usual functions */ +# define CVT_PTR(ptr) (ptr) +# define CVT_PTR_NOCHECK(ptr) (ptr) +# define png_strcpy strcpy +# define png_strlen strlen +# define png_memcmp memcmp /* SJT: added */ +# define png_memcpy memcpy +# define png_memset memset +#endif +/* End of memory model independent support */ + +/* Just a little check that someone hasn't tried to define something + * contradictory. + */ +#if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K) +# undef PNG_ZBUF_SIZE +# define PNG_ZBUF_SIZE 65536 +#endif + +#ifdef PNG_READ_SUPPORTED +/* Prior to libpng-1.0.9, this block was in pngasmrd.h */ +#if defined(PNG_INTERNAL) + +/* These are the default thresholds before the MMX code kicks in; if either + * rowbytes or bitdepth is below the threshold, plain C code is used. These + * can be overridden at runtime via the png_set_mmx_thresholds() call in + * libpng 1.2.0 and later. The values below were chosen by Intel. + */ + +#ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT +# define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT 128 /* >= */ +#endif +#ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT +# define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT 9 /* >= */ +#endif + +/* Set this in the makefile for VC++ on Pentium, not here. */ +/* Platform must be Pentium. Makefile must assemble and load pngvcrd.c . + * MMX will be detected at run time and used if present. + */ +#ifdef PNG_USE_PNGVCRD +# define PNG_HAVE_ASSEMBLER_COMBINE_ROW +# define PNG_HAVE_ASSEMBLER_READ_INTERLACE +# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW +#endif + +/* Set this in the makefile for gcc/as on Pentium, not here. */ +/* Platform must be Pentium. Makefile must assemble and load pnggccrd.c . + * MMX will be detected at run time and used if present. + */ +#ifdef PNG_USE_PNGGCCRD +# define PNG_HAVE_ASSEMBLER_COMBINE_ROW +# define PNG_HAVE_ASSEMBLER_READ_INTERLACE +# define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW +#endif +/* - see pnggccrd.c for info about what is currently enabled */ + +#endif /* PNG_INTERNAL */ +#endif /* PNG_READ_SUPPORTED */ + +#endif /* PNGCONF_H */ + diff --git a/engine/libs/zconf.h b/engine/libs/zconf.h new file mode 100644 index 000000000..96886c087 --- /dev/null +++ b/engine/libs/zconf.h @@ -0,0 +1,280 @@ +/* zconf.h -- configuration of the zlib compression library + * Copyright (C) 1995-1998 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#ifndef _ZCONF_H +#define _ZCONF_H + +/* + * If you *really* need a unique prefix for all types and library functions, + * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it. + */ +#ifdef Z_PREFIX +# define deflateInit_ z_deflateInit_ +# define deflate z_deflate +# define deflateEnd z_deflateEnd +# define inflateInit_ z_inflateInit_ +# define inflate z_inflate +# define inflateEnd z_inflateEnd +# define deflateInit2_ z_deflateInit2_ +# define deflateSetDictionary z_deflateSetDictionary +# define deflateCopy z_deflateCopy +# define deflateReset z_deflateReset +# define deflateParams z_deflateParams +# define inflateInit2_ z_inflateInit2_ +# define inflateSetDictionary z_inflateSetDictionary +# define inflateSync z_inflateSync +# define inflateSyncPoint z_inflateSyncPoint +# define inflateReset z_inflateReset +# define compress z_compress +# define compress2 z_compress2 +# define uncompress z_uncompress +# define adler32 z_adler32 +# define crc32 z_crc32 +# define get_crc_table z_get_crc_table + +# define Byte z_Byte +# define uInt z_uInt +# define uLong z_uLong +# define Bytef z_Bytef +# define charf z_charf +# define intf z_intf +# define uIntf z_uIntf +# define uLongf z_uLongf +# define voidpf z_voidpf +# define voidp z_voidp +#endif + +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +# define WIN32 +#endif +#if defined(__GNUC__) || defined(WIN32) || defined(__386__) || defined(i386) +# ifndef __32BIT__ +# define __32BIT__ +# endif +#endif +#if defined(__MSDOS__) && !defined(MSDOS) +# define MSDOS +#endif + +/* + * Compile with -DMAXSEG_64K if the alloc function cannot allocate more + * than 64k bytes at a time (needed on systems with 16-bit int). + */ +#if defined(MSDOS) && !defined(__32BIT__) +# define MAXSEG_64K +#endif +#ifdef MSDOS +# define UNALIGNED_OK +#endif + +#if (defined(MSDOS) || defined(_WINDOWS) || defined(WIN32)) && !defined(STDC) +# define STDC +#endif +#if defined(__STDC__) || defined(__cplusplus) || defined(__OS2__) +# ifndef STDC +# define STDC +# endif +#endif + +#ifndef STDC +# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ +# define const +# endif +#endif + +/* Some Mac compilers merge all .h files incorrectly: */ +#if defined(__MWERKS__) || defined(applec) ||defined(THINK_C) ||defined(__SC__) +# define NO_DUMMY_DECL +#endif + +/* Old Borland C incorrectly complains about missing returns: */ +#if defined(__BORLANDC__) && (__BORLANDC__ < 0x500) +# define NEED_DUMMY_RETURN +#endif + + +/* Maximum value for memLevel in deflateInit2 */ +#ifndef MAX_MEM_LEVEL +# ifdef MAXSEG_64K +# define MAX_MEM_LEVEL 8 +# else +# define MAX_MEM_LEVEL 9 +# endif +#endif + +/* Maximum value for windowBits in deflateInit2 and inflateInit2. + * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files + * created by gzip. (Files created by minigzip can still be extracted by + * gzip.) + */ +#ifndef MAX_WBITS +# define MAX_WBITS 15 /* 32K LZ77 window */ +#endif + +/* The memory requirements for deflate are (in bytes): + (1 << (windowBits+2)) + (1 << (memLevel+9)) + that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) + plus a few kilobytes for small objects. For example, if you want to reduce + the default memory requirements from 256K to 128K, compile with + make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" + Of course this will generally degrade compression (there's no free lunch). + + The memory requirements for inflate are (in bytes) 1 << windowBits + that is, 32K for windowBits=15 (default value) plus a few kilobytes + for small objects. +*/ + + /* Type declarations */ + +#ifndef OF /* function prototypes */ +# ifdef STDC +# define OF(args) args +# else +# define OF(args) () +# endif +#endif + +/* The following definitions for FAR are needed only for MSDOS mixed + * model programming (small or medium model with some far allocations). + * This was tested only with MSC; for other MSDOS compilers you may have + * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, + * just define FAR to be empty. + */ +#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(__32BIT__) + /* MSC small or medium model */ +# define SMALL_MEDIUM +# ifdef _MSC_VER +# define FAR _far +# else +# define FAR far +# endif +#endif +#if defined(__BORLANDC__) && (defined(__SMALL__) || defined(__MEDIUM__)) +# ifndef __32BIT__ +# define SMALL_MEDIUM +# define FAR _far +# endif +#endif + +/* Compile with -DZLIB_DLL for Windows DLL support */ +#if defined(ZLIB_DLL) +# if defined(_WINDOWS) || defined(WINDOWS) +# ifdef FAR +# undef FAR +# endif +# include +# define ZEXPORT WINAPI +# ifdef WIN32 +# define ZEXPORTVA WINAPIV +# else +# define ZEXPORTVA FAR _cdecl _export +# endif +# endif +# if defined (__BORLANDC__) +# if (__BORLANDC__ >= 0x0500) && defined (WIN32) +# include +# define ZEXPORT __declspec(dllexport) WINAPI +# define ZEXPORTRVA __declspec(dllexport) WINAPIV +# else +# if defined (_Windows) && defined (__DLL__) +# define ZEXPORT _export +# define ZEXPORTVA _export +# endif +# endif +# endif +#endif + +#if defined (__BEOS__) +# if defined (ZLIB_DLL) +# define ZEXTERN extern __declspec(dllexport) +# else +# define ZEXTERN extern __declspec(dllimport) +# endif +#endif + +#ifndef ZEXPORT +# define ZEXPORT +#endif +#ifndef ZEXPORTVA +# define ZEXPORTVA +#endif +#ifndef ZEXTERN +# define ZEXTERN extern +#endif + +#ifndef FAR +# define FAR +#endif + +#if !defined(MACOS) && !defined(TARGET_OS_MAC) +typedef unsigned char Byte; /* 8 bits */ +#endif +typedef unsigned int uInt; /* 16 bits or more */ +typedef unsigned long uLong; /* 32 bits or more */ +typedef unsigned short uShort; + +#ifdef SMALL_MEDIUM + /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ +# define Bytef Byte FAR +#else + typedef Byte FAR Bytef; +#endif +typedef char FAR charf; +typedef int FAR intf; +typedef uInt FAR uIntf; +typedef uLong FAR uLongf; + +#ifdef STDC + typedef void FAR *voidpf; + typedef void *voidp; +#else + typedef Byte FAR *voidpf; + typedef Byte *voidp; +#endif + +#ifdef HAVE_UNISTD_H +# include /* for off_t */ +# include /* for SEEK_* and off_t */ +# define z_off_t off_t +#endif +#ifndef SEEK_SET +# define SEEK_SET 0 /* Seek from beginning of file. */ +# define SEEK_CUR 1 /* Seek from current position. */ +# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ +#endif +#ifndef z_off_t +# define z_off_t long +#endif + +/* MVS linker does not support external names larger than 8 bytes */ +#if defined(__MVS__) +# pragma map(deflateInit_,"DEIN") +# pragma map(deflateInit2_,"DEIN2") +# pragma map(deflateEnd,"DEEND") +# pragma map(inflateInit_,"ININ") +# pragma map(inflateInit2_,"ININ2") +# pragma map(inflateEnd,"INEND") +# pragma map(inflateSync,"INSY") +# pragma map(inflateSetDictionary,"INSEDI") +# pragma map(inflate_blocks,"INBL") +# pragma map(inflate_blocks_new,"INBLNE") +# pragma map(inflate_blocks_free,"INBLFR") +# pragma map(inflate_blocks_reset,"INBLRE") +# pragma map(inflate_codes_free,"INCOFR") +# pragma map(inflate_codes,"INCO") +# pragma map(inflate_fast,"INFA") +# pragma map(inflate_flush,"INFLU") +# pragma map(inflate_mask,"INMA") +# pragma map(inflate_set_dictionary,"INSEDI2") +# pragma map(inflate_copyright,"INCOPY") +# pragma map(inflate_trees_bits,"INTRBI") +# pragma map(inflate_trees_dynamic,"INTRDY") +# pragma map(inflate_trees_fixed,"INTRFI") +# pragma map(inflate_trees_free,"INTRFR") +#endif + +#endif /* _ZCONF_H */ diff --git a/engine/libs/zlib.h b/engine/libs/zlib.h new file mode 100644 index 000000000..156b9fa27 --- /dev/null +++ b/engine/libs/zlib.h @@ -0,0 +1,893 @@ +/* zlib.h -- interface of the 'zlib' general purpose compression library + version 1.1.3, July 9th, 1998 + + Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + Jean-loup Gailly Mark Adler + jloup@gzip.org madler@alumni.caltech.edu + + + The data format used by the zlib library is described by RFCs (Request for + Comments) 1950 to 1952 in the files ftp://ds.internic.net/rfc/rfc1950.txt + (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format). +*/ + +#ifndef _ZLIB_H +#define _ZLIB_H + +#include "zconf.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define ZLIB_VERSION "1.1.3" + +/* + The 'zlib' compression library provides in-memory compression and + decompression functions, including integrity checks of the uncompressed + data. This version of the library supports only one compression method + (deflation) but other algorithms will be added later and will have the same + stream interface. + + Compression can be done in a single step if the buffers are large + enough (for example if an input file is mmap'ed), or can be done by + repeated calls of the compression function. In the latter case, the + application must provide more input and/or consume the output + (providing more output space) before each call. + + The library also supports reading and writing files in gzip (.gz) format + with an interface similar to that of stdio. + + The library does not install any signal handler. The decoder checks + the consistency of the compressed data, so the library should never + crash even in case of corrupted input. +*/ + +typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size)); +typedef void (*free_func) OF((voidpf opaque, voidpf address)); + +struct internal_state; + +typedef struct z_stream_s { + Bytef *next_in; /* next input byte */ + uInt avail_in; /* number of bytes available at next_in */ + uLong total_in; /* total nb of input bytes read so far */ + + Bytef *next_out; /* next output byte should be put there */ + uInt avail_out; /* remaining free space at next_out */ + uLong total_out; /* total nb of bytes output so far */ + + char *msg; /* last error message, NULL if no error */ + struct internal_state FAR *state; /* not visible by applications */ + + alloc_func zalloc; /* used to allocate the internal state */ + free_func zfree; /* used to free the internal state */ + voidpf opaque; /* private data object passed to zalloc and zfree */ + + int data_type; /* best guess about the data type: ascii or binary */ + uLong adler; /* adler32 value of the uncompressed data */ + uLong reserved; /* reserved for future use */ +} z_stream; + +typedef z_stream FAR *z_streamp; + +/* + The application must update next_in and avail_in when avail_in has + dropped to zero. It must update next_out and avail_out when avail_out + has dropped to zero. The application must initialize zalloc, zfree and + opaque before calling the init function. All other fields are set by the + compression library and must not be updated by the application. + + The opaque value provided by the application will be passed as the first + parameter for calls of zalloc and zfree. This can be useful for custom + memory management. The compression library attaches no meaning to the + opaque value. + + zalloc must return Z_NULL if there is not enough memory for the object. + If zlib is used in a multi-threaded application, zalloc and zfree must be + thread safe. + + On 16-bit systems, the functions zalloc and zfree must be able to allocate + exactly 65536 bytes, but will not be required to allocate more than this + if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, + pointers returned by zalloc for objects of exactly 65536 bytes *must* + have their offset normalized to zero. The default allocation function + provided by this library ensures this (see zutil.c). To reduce memory + requirements and avoid any allocation of 64K objects, at the expense of + compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h). + + The fields total_in and total_out can be used for statistics or + progress reports. After compression, total_in holds the total size of + the uncompressed data and may be saved for use in the decompressor + (particularly if the decompressor wants to decompress everything in + a single step). +*/ + + /* constants */ + +#define Z_NO_FLUSH 0 +#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */ +#define Z_SYNC_FLUSH 2 +#define Z_FULL_FLUSH 3 +#define Z_FINISH 4 +/* Allowed flush values; see deflate() below for details */ + +#define Z_OK 0 +#define Z_STREAM_END 1 +#define Z_NEED_DICT 2 +#define Z_ERRNO (-1) +#define Z_STREAM_ERROR (-2) +#define Z_DATA_ERROR (-3) +#define Z_MEM_ERROR (-4) +#define Z_BUF_ERROR (-5) +#define Z_VERSION_ERROR (-6) +/* Return codes for the compression/decompression functions. Negative + * values are errors, positive values are used for special but normal events. + */ + +#define Z_NO_COMPRESSION 0 +#define Z_BEST_SPEED 1 +#define Z_BEST_COMPRESSION 9 +#define Z_DEFAULT_COMPRESSION (-1) +/* compression levels */ + +#define Z_FILTERED 1 +#define Z_HUFFMAN_ONLY 2 +#define Z_DEFAULT_STRATEGY 0 +/* compression strategy; see deflateInit2() below for details */ + +#define Z_BINARY 0 +#define Z_ASCII 1 +#define Z_UNKNOWN 2 +/* Possible values of the data_type field */ + +#define Z_DEFLATED 8 +/* The deflate compression method (the only one supported in this version) */ + +#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */ + +#define zlib_version zlibVersion() +/* for compatibility with versions < 1.0.2 */ + + /* basic functions */ + +ZEXTERN const char * ZEXPORT zlibVersion OF((void)); +/* The application can compare zlibVersion and ZLIB_VERSION for consistency. + If the first character differs, the library code actually used is + not compatible with the zlib.h header file used by the application. + This check is automatically made by deflateInit and inflateInit. + */ + +/* +ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level)); + + Initializes the internal stream state for compression. The fields + zalloc, zfree and opaque must be initialized before by the caller. + If zalloc and zfree are set to Z_NULL, deflateInit updates them to + use default allocation functions. + + The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: + 1 gives best speed, 9 gives best compression, 0 gives no compression at + all (the input data is simply copied a block at a time). + Z_DEFAULT_COMPRESSION requests a default compromise between speed and + compression (currently equivalent to level 6). + + deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_STREAM_ERROR if level is not a valid compression level, + Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible + with the version assumed by the caller (ZLIB_VERSION). + msg is set to null if there is no error message. deflateInit does not + perform any compression: this will be done by deflate(). +*/ + + +ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush)); +/* + deflate compresses as much data as possible, and stops when the input + buffer becomes empty or the output buffer becomes full. It may introduce some + output latency (reading input without producing any output) except when + forced to flush. + + The detailed semantics are as follows. deflate performs one or both of the + following actions: + + - Compress more input starting at next_in and update next_in and avail_in + accordingly. If not all input can be processed (because there is not + enough room in the output buffer), next_in and avail_in are updated and + processing will resume at this point for the next call of deflate(). + + - Provide more output starting at next_out and update next_out and avail_out + accordingly. This action is forced if the parameter flush is non zero. + Forcing flush frequently degrades the compression ratio, so this parameter + should be set only when necessary (in interactive applications). + Some output may be provided even if flush is not set. + + Before the call of deflate(), the application should ensure that at least + one of the actions is possible, by providing more input and/or consuming + more output, and updating avail_in or avail_out accordingly; avail_out + should never be zero before the call. The application can consume the + compressed output when it wants, for example when the output buffer is full + (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK + and with zero avail_out, it must be called again after making room in the + output buffer because there might be more output pending. + + If the parameter flush is set to Z_SYNC_FLUSH, all pending output is + flushed to the output buffer and the output is aligned on a byte boundary, so + that the decompressor can get all input data available so far. (In particular + avail_in is zero after the call if enough output space has been provided + before the call.) Flushing may degrade compression for some compression + algorithms and so it should be used only when necessary. + + If flush is set to Z_FULL_FLUSH, all output is flushed as with + Z_SYNC_FLUSH, and the compression state is reset so that decompression can + restart from this point if previous compressed data has been damaged or if + random access is desired. Using Z_FULL_FLUSH too often can seriously degrade + the compression. + + If deflate returns with avail_out == 0, this function must be called again + with the same value of the flush parameter and more output space (updated + avail_out), until the flush is complete (deflate returns with non-zero + avail_out). + + If the parameter flush is set to Z_FINISH, pending input is processed, + pending output is flushed and deflate returns with Z_STREAM_END if there + was enough output space; if deflate returns with Z_OK, this function must be + called again with Z_FINISH and more output space (updated avail_out) but no + more input data, until it returns with Z_STREAM_END or an error. After + deflate has returned Z_STREAM_END, the only possible operations on the + stream are deflateReset or deflateEnd. + + Z_FINISH can be used immediately after deflateInit if all the compression + is to be done in a single step. In this case, avail_out must be at least + 0.1% larger than avail_in plus 12 bytes. If deflate does not return + Z_STREAM_END, then it must be called again as described above. + + deflate() sets strm->adler to the adler32 checksum of all input read + so far (that is, total_in bytes). + + deflate() may update data_type if it can make a good guess about + the input data type (Z_ASCII or Z_BINARY). In doubt, the data is considered + binary. This field is only for information purposes and does not affect + the compression algorithm in any manner. + + deflate() returns Z_OK if some progress has been made (more input + processed or more output produced), Z_STREAM_END if all input has been + consumed and all output has been produced (only when flush is set to + Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example + if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible + (for example avail_in or avail_out was zero). +*/ + + +ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm)); +/* + All dynamically allocated data structures for this stream are freed. + This function discards any unprocessed input and does not flush any + pending output. + + deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the + stream state was inconsistent, Z_DATA_ERROR if the stream was freed + prematurely (some input or output was discarded). In the error case, + msg may be set but then points to a static string (which must not be + deallocated). +*/ + + +/* +ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm)); + + Initializes the internal stream state for decompression. The fields + next_in, avail_in, zalloc, zfree and opaque must be initialized before by + the caller. If next_in is not Z_NULL and avail_in is large enough (the exact + value depends on the compression method), inflateInit determines the + compression method from the zlib header and allocates all data structures + accordingly; otherwise the allocation will be deferred to the first call of + inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to + use default allocation functions. + + inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_VERSION_ERROR if the zlib library version is incompatible with the + version assumed by the caller. msg is set to null if there is no error + message. inflateInit does not perform any decompression apart from reading + the zlib header if present: this will be done by inflate(). (So next_in and + avail_in may be modified, but next_out and avail_out are unchanged.) +*/ + + +ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush)); +/* + inflate decompresses as much data as possible, and stops when the input + buffer becomes empty or the output buffer becomes full. It may some + introduce some output latency (reading input without producing any output) + except when forced to flush. + + The detailed semantics are as follows. inflate performs one or both of the + following actions: + + - Decompress more input starting at next_in and update next_in and avail_in + accordingly. If not all input can be processed (because there is not + enough room in the output buffer), next_in is updated and processing + will resume at this point for the next call of inflate(). + + - Provide more output starting at next_out and update next_out and avail_out + accordingly. inflate() provides as much output as possible, until there + is no more input data or no more space in the output buffer (see below + about the flush parameter). + + Before the call of inflate(), the application should ensure that at least + one of the actions is possible, by providing more input and/or consuming + more output, and updating the next_* and avail_* values accordingly. + The application can consume the uncompressed output when it wants, for + example when the output buffer is full (avail_out == 0), or after each + call of inflate(). If inflate returns Z_OK and with zero avail_out, it + must be called again after making room in the output buffer because there + might be more output pending. + + If the parameter flush is set to Z_SYNC_FLUSH, inflate flushes as much + output as possible to the output buffer. The flushing behavior of inflate is + not specified for values of the flush parameter other than Z_SYNC_FLUSH + and Z_FINISH, but the current implementation actually flushes as much output + as possible anyway. + + inflate() should normally be called until it returns Z_STREAM_END or an + error. However if all decompression is to be performed in a single step + (a single call of inflate), the parameter flush should be set to + Z_FINISH. In this case all pending input is processed and all pending + output is flushed; avail_out must be large enough to hold all the + uncompressed data. (The size of the uncompressed data may have been saved + by the compressor for this purpose.) The next operation on this stream must + be inflateEnd to deallocate the decompression state. The use of Z_FINISH + is never required, but can be used to inform inflate that a faster routine + may be used for the single inflate() call. + + If a preset dictionary is needed at this point (see inflateSetDictionary + below), inflate sets strm-adler to the adler32 checksum of the + dictionary chosen by the compressor and returns Z_NEED_DICT; otherwise + it sets strm->adler to the adler32 checksum of all output produced + so far (that is, total_out bytes) and returns Z_OK, Z_STREAM_END or + an error code as described below. At the end of the stream, inflate() + checks that its computed adler32 checksum is equal to that saved by the + compressor and returns Z_STREAM_END only if the checksum is correct. + + inflate() returns Z_OK if some progress has been made (more input processed + or more output produced), Z_STREAM_END if the end of the compressed data has + been reached and all uncompressed output has been produced, Z_NEED_DICT if a + preset dictionary is needed at this point, Z_DATA_ERROR if the input data was + corrupted (input stream not conforming to the zlib format or incorrect + adler32 checksum), Z_STREAM_ERROR if the stream structure was inconsistent + (for example if next_in or next_out was NULL), Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if no progress is possible or if there was not + enough room in the output buffer when Z_FINISH is used. In the Z_DATA_ERROR + case, the application may then call inflateSync to look for a good + compression block. +*/ + + +ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm)); +/* + All dynamically allocated data structures for this stream are freed. + This function discards any unprocessed input and does not flush any + pending output. + + inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state + was inconsistent. In the error case, msg may be set but then points to a + static string (which must not be deallocated). +*/ + + /* Advanced functions */ + +/* + The following functions are needed only in some special applications. +*/ + +/* +ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm, + int level, + int method, + int windowBits, + int memLevel, + int strategy)); + + This is another version of deflateInit with more compression options. The + fields next_in, zalloc, zfree and opaque must be initialized before by + the caller. + + The method parameter is the compression method. It must be Z_DEFLATED in + this version of the library. + + The windowBits parameter is the base two logarithm of the window size + (the size of the history buffer). It should be in the range 8..15 for this + version of the library. Larger values of this parameter result in better + compression at the expense of memory usage. The default value is 15 if + deflateInit is used instead. + + The memLevel parameter specifies how much memory should be allocated + for the internal compression state. memLevel=1 uses minimum memory but + is slow and reduces compression ratio; memLevel=9 uses maximum memory + for optimal speed. The default value is 8. See zconf.h for total memory + usage as a function of windowBits and memLevel. + + The strategy parameter is used to tune the compression algorithm. Use the + value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a + filter (or predictor), or Z_HUFFMAN_ONLY to force Huffman encoding only (no + string match). Filtered data consists mostly of small values with a + somewhat random distribution. In this case, the compression algorithm is + tuned to compress them better. The effect of Z_FILTERED is to force more + Huffman coding and less string matching; it is somewhat intermediate + between Z_DEFAULT and Z_HUFFMAN_ONLY. The strategy parameter only affects + the compression ratio but not the correctness of the compressed output even + if it is not set appropriately. + + deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid + method). msg is set to null if there is no error message. deflateInit2 does + not perform any compression: this will be done by deflate(). +*/ + +ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm, + const Bytef *dictionary, + uInt dictLength)); +/* + Initializes the compression dictionary from the given byte sequence + without producing any compressed output. This function must be called + immediately after deflateInit, deflateInit2 or deflateReset, before any + call of deflate. The compressor and decompressor must use exactly the same + dictionary (see inflateSetDictionary). + + The dictionary should consist of strings (byte sequences) that are likely + to be encountered later in the data to be compressed, with the most commonly + used strings preferably put towards the end of the dictionary. Using a + dictionary is most useful when the data to be compressed is short and can be + predicted with good accuracy; the data can then be compressed better than + with the default empty dictionary. + + Depending on the size of the compression data structures selected by + deflateInit or deflateInit2, a part of the dictionary may in effect be + discarded, for example if the dictionary is larger than the window size in + deflate or deflate2. Thus the strings most likely to be useful should be + put at the end of the dictionary, not at the front. + + Upon return of this function, strm->adler is set to the Adler32 value + of the dictionary; the decompressor may later use this value to determine + which dictionary has been used by the compressor. (The Adler32 value + applies to the whole dictionary even if only a subset of the dictionary is + actually used by the compressor.) + + deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a + parameter is invalid (such as NULL dictionary) or the stream state is + inconsistent (for example if deflate has already been called for this stream + or if the compression method is bsort). deflateSetDictionary does not + perform any compression: this will be done by deflate(). +*/ + +ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest, + z_streamp source)); +/* + Sets the destination stream as a complete copy of the source stream. + + This function can be useful when several compression strategies will be + tried, for example when there are several ways of pre-processing the input + data with a filter. The streams that will be discarded should then be freed + by calling deflateEnd. Note that deflateCopy duplicates the internal + compression state which can be quite large, so this strategy is slow and + can consume lots of memory. + + deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_STREAM_ERROR if the source stream state was inconsistent + (such as zalloc being NULL). msg is left unchanged in both source and + destination. +*/ + +ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm)); +/* + This function is equivalent to deflateEnd followed by deflateInit, + but does not free and reallocate all the internal compression state. + The stream will keep the same compression level and any other attributes + that may have been set by deflateInit2. + + deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being NULL). +*/ + +ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm, + int level, + int strategy)); +/* + Dynamically update the compression level and compression strategy. The + interpretation of level and strategy is as in deflateInit2. This can be + used to switch between compression and straight copy of the input data, or + to switch to a different kind of input data requiring a different + strategy. If the compression level is changed, the input available so far + is compressed with the old level (and may be flushed); the new level will + take effect only at the next call of deflate(). + + Before the call of deflateParams, the stream state must be set as for + a call of deflate(), since the currently available input may have to + be compressed and flushed. In particular, strm->avail_out must be non-zero. + + deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source + stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR + if strm->avail_out was zero. +*/ + +/* +ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm, + int windowBits)); + + This is another version of inflateInit with an extra parameter. The + fields next_in, avail_in, zalloc, zfree and opaque must be initialized + before by the caller. + + The windowBits parameter is the base two logarithm of the maximum window + size (the size of the history buffer). It should be in the range 8..15 for + this version of the library. The default value is 15 if inflateInit is used + instead. If a compressed stream with a larger window size is given as + input, inflate() will return with the error code Z_DATA_ERROR instead of + trying to allocate a larger window. + + inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_STREAM_ERROR if a parameter is invalid (such as a negative + memLevel). msg is set to null if there is no error message. inflateInit2 + does not perform any decompression apart from reading the zlib header if + present: this will be done by inflate(). (So next_in and avail_in may be + modified, but next_out and avail_out are unchanged.) +*/ + +ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm, + const Bytef *dictionary, + uInt dictLength)); +/* + Initializes the decompression dictionary from the given uncompressed byte + sequence. This function must be called immediately after a call of inflate + if this call returned Z_NEED_DICT. The dictionary chosen by the compressor + can be determined from the Adler32 value returned by this call of + inflate. The compressor and decompressor must use exactly the same + dictionary (see deflateSetDictionary). + + inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a + parameter is invalid (such as NULL dictionary) or the stream state is + inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the + expected one (incorrect Adler32 value). inflateSetDictionary does not + perform any decompression: this will be done by subsequent calls of + inflate(). +*/ + +ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm)); +/* + Skips invalid compressed data until a full flush point (see above the + description of deflate with Z_FULL_FLUSH) can be found, or until all + available input is skipped. No output is provided. + + inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR + if no more input was provided, Z_DATA_ERROR if no flush point has been found, + or Z_STREAM_ERROR if the stream structure was inconsistent. In the success + case, the application may save the current current value of total_in which + indicates where valid compressed data was found. In the error case, the + application may repeatedly call inflateSync, providing more input each time, + until success or end of the input data. +*/ + +ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm)); +/* + This function is equivalent to inflateEnd followed by inflateInit, + but does not free and reallocate all the internal decompression state. + The stream will keep attributes that may have been set by inflateInit2. + + inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being NULL). +*/ + + + /* utility functions */ + +/* + The following utility functions are implemented on top of the + basic stream-oriented functions. To simplify the interface, some + default options are assumed (compression level and memory usage, + standard memory allocation functions). The source code of these + utility functions can easily be modified if you need special options. +*/ + +ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen)); +/* + Compresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total + size of the destination buffer, which must be at least 0.1% larger than + sourceLen plus 12 bytes. Upon exit, destLen is the actual size of the + compressed buffer. + This function can be used to compress a whole file at once if the + input file is mmap'ed. + compress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer. +*/ + +ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen, + int level)); +/* + Compresses the source buffer into the destination buffer. The level + parameter has the same meaning as in deflateInit. sourceLen is the byte + length of the source buffer. Upon entry, destLen is the total size of the + destination buffer, which must be at least 0.1% larger than sourceLen plus + 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. + + compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_BUF_ERROR if there was not enough room in the output buffer, + Z_STREAM_ERROR if the level parameter is invalid. +*/ + +ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen)); +/* + Decompresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total + size of the destination buffer, which must be large enough to hold the + entire uncompressed data. (The size of the uncompressed data must have + been saved previously by the compressor and transmitted to the decompressor + by some mechanism outside the scope of this compression library.) + Upon exit, destLen is the actual size of the compressed buffer. + This function can be used to decompress a whole file at once if the + input file is mmap'ed. + + uncompress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer, or Z_DATA_ERROR if the input data was corrupted. +*/ + + +typedef voidp gzFile; + +ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode)); +/* + Opens a gzip (.gz) file for reading or writing. The mode parameter + is as in fopen ("rb" or "wb") but can also include a compression level + ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for + Huffman only compression as in "wb1h". (See the description + of deflateInit2 for more information about the strategy parameter.) + + gzopen can be used to read a file which is not in gzip format; in this + case gzread will directly read from the file without decompression. + + gzopen returns NULL if the file could not be opened or if there was + insufficient memory to allocate the (de)compression state; errno + can be checked to distinguish the two cases (if errno is zero, the + zlib error is Z_MEM_ERROR). */ + +ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode)); +/* + gzdopen() associates a gzFile with the file descriptor fd. File + descriptors are obtained from calls like open, dup, creat, pipe or + fileno (in the file has been previously opened with fopen). + The mode parameter is as in gzopen. + The next call of gzclose on the returned gzFile will also close the + file descriptor fd, just like fclose(fdopen(fd), mode) closes the file + descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode). + gzdopen returns NULL if there was insufficient memory to allocate + the (de)compression state. +*/ + +ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy)); +/* + Dynamically update the compression level or strategy. See the description + of deflateInit2 for the meaning of these parameters. + gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not + opened for writing. +*/ + +ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len)); +/* + Reads the given number of uncompressed bytes from the compressed file. + If the input file was not in gzip format, gzread copies the given number + of bytes into the buffer. + gzread returns the number of uncompressed bytes actually read (0 for + end of file, -1 for error). */ + +ZEXTERN int ZEXPORT gzwrite OF((gzFile file, + const voidp buf, unsigned len)); +/* + Writes the given number of uncompressed bytes into the compressed file. + gzwrite returns the number of uncompressed bytes actually written + (0 in case of error). +*/ + +ZEXTERN int VARGS ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...)); +/* + Converts, formats, and writes the args to the compressed file under + control of the format string, as in fprintf. gzprintf returns the number of + uncompressed bytes actually written (0 in case of error). +*/ + +ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s)); +/* + Writes the given null-terminated string to the compressed file, excluding + the terminating null character. + gzputs returns the number of characters written, or -1 in case of error. +*/ + +ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len)); +/* + Reads bytes from the compressed file until len-1 characters are read, or + a newline character is read and transferred to buf, or an end-of-file + condition is encountered. The string is then terminated with a null + character. + gzgets returns buf, or Z_NULL in case of error. +*/ + +ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c)); +/* + Writes c, converted to an unsigned char, into the compressed file. + gzputc returns the value that was written, or -1 in case of error. +*/ + +ZEXTERN int ZEXPORT gzgetc OF((gzFile file)); +/* + Reads one byte from the compressed file. gzgetc returns this byte + or -1 in case of end of file or error. +*/ + +ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush)); +/* + Flushes all pending output into the compressed file. The parameter + flush is as in the deflate() function. The return value is the zlib + error number (see function gzerror below). gzflush returns Z_OK if + the flush parameter is Z_FINISH and all output could be flushed. + gzflush should be called only when strictly necessary because it can + degrade compression. +*/ + +ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file, + z_off_t offset, int whence)); +/* + Sets the starting position for the next gzread or gzwrite on the + given compressed file. The offset represents a number of bytes in the + uncompressed data stream. The whence parameter is defined as in lseek(2); + the value SEEK_END is not supported. + If the file is opened for reading, this function is emulated but can be + extremely slow. If the file is opened for writing, only forward seeks are + supported; gzseek then compresses a sequence of zeroes up to the new + starting position. + + gzseek returns the resulting offset location as measured in bytes from + the beginning of the uncompressed stream, or -1 in case of error, in + particular if the file is opened for writing and the new starting position + would be before the current position. +*/ + +ZEXTERN int ZEXPORT gzrewind OF((gzFile file)); +/* + Rewinds the given file. This function is supported only for reading. + + gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET) +*/ + +ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file)); +/* + Returns the starting position for the next gzread or gzwrite on the + given compressed file. This position represents a number of bytes in the + uncompressed data stream. + + gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR) +*/ + +ZEXTERN int ZEXPORT gzeof OF((gzFile file)); +/* + Returns 1 when EOF has previously been detected reading the given + input stream, otherwise zero. +*/ + +ZEXTERN int ZEXPORT gzclose OF((gzFile file)); +/* + Flushes all pending output if necessary, closes the compressed file + and deallocates all the (de)compression state. The return value is the zlib + error number (see function gzerror below). +*/ + +ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum)); +/* + Returns the error message for the last error which occurred on the + given compressed file. errnum is set to zlib error number. If an + error occurred in the file system and not in the compression library, + errnum is set to Z_ERRNO and the application may consult errno + to get the exact error code. +*/ + + /* checksum functions */ + +/* + These functions are not related to compression but are exported + anyway because they might be useful in applications using the + compression library. +*/ + +ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len)); + +/* + Update a running Adler-32 checksum with the bytes buf[0..len-1] and + return the updated checksum. If buf is NULL, this function returns + the required initial value for the checksum. + An Adler-32 checksum is almost as reliable as a CRC32 but can be computed + much faster. Usage example: + + uLong adler = adler32(0L, Z_NULL, 0); + + while (read_buffer(buffer, length) != EOF) { + adler = adler32(adler, buffer, length); + } + if (adler != original_adler) error(); +*/ + +ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len)); +/* + Update a running crc with the bytes buf[0..len-1] and return the updated + crc. If buf is NULL, this function returns the required initial value + for the crc. Pre- and post-conditioning (one's complement) is performed + within this function so it shouldn't be done by the application. + Usage example: + + uLong crc = crc32(0L, Z_NULL, 0); + + while (read_buffer(buffer, length) != EOF) { + crc = crc32(crc, buffer, length); + } + if (crc != original_crc) error(); +*/ + + + /* various hacks, don't look :) */ + +/* deflateInit and inflateInit are macros to allow checking the zlib version + * and the compiler's view of z_stream: + */ +ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level, + const char *version, int stream_size)); +ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm, + const char *version, int stream_size)); +ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method, + int windowBits, int memLevel, + int strategy, const char *version, + int stream_size)); +ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits, + const char *version, int stream_size)); +#define deflateInit(strm, level) \ + deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream)) +#define inflateInit(strm) \ + inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream)) +#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \ + deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\ + (strategy), ZLIB_VERSION, sizeof(z_stream)) +#define inflateInit2(strm, windowBits) \ + inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream)) + + +#if !defined(_Z_UTIL_H) && !defined(NO_DUMMY_DECL) + struct internal_state {int dummy;}; /* hack for buggy compilers */ +#endif + +ZEXTERN const char * ZEXPORT zError OF((int err)); +ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp z)); +ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void)); + +#ifdef __cplusplus +} +#endif + +#endif /* _ZLIB_H */ diff --git a/engine/libs/zlib.lib b/engine/libs/zlib.lib new file mode 100644 index 000000000..8af16a06d Binary files /dev/null and b/engine/libs/zlib.lib differ