mirror of
https://git.do.srb2.org/STJr/SRB2.git
synced 2024-12-28 21:50:47 +00:00
312b9f76b6
This reverts merge request !435
2282 lines
65 KiB
C
2282 lines
65 KiB
C
|
|
/* pngtest.c - a simple test program to test libpng
|
|
*
|
|
* Copyright (c) 2018-2019 Cosmin Truta
|
|
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
|
|
* Copyright (c) 1996-1997 Andreas Dilger
|
|
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
|
|
*
|
|
* This code is released under the libpng license.
|
|
* For conditions of distribution and use, see the disclaimer
|
|
* and license in png.h
|
|
*
|
|
* This program reads in a PNG image, writes it out again, and then
|
|
* compares the two files. If the files are identical, this shows that
|
|
* the basic chunk handling, filtering, and (de)compression code is working
|
|
* properly. It does not currently test all of the transforms, although
|
|
* it probably should.
|
|
*
|
|
* The program will report "FAIL" in certain legitimate cases:
|
|
* 1) when the compression level or filter selection method is changed.
|
|
* 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
|
|
* 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
|
|
* exist in the input file.
|
|
* 4) others not listed here...
|
|
* In these cases, it is best to check with another tool such as "pngcheck"
|
|
* to see what the differences between the two files are.
|
|
*
|
|
* If a filename is given on the command-line, then this file is used
|
|
* for the input, rather than the default "pngtest.png". This allows
|
|
* testing a wide variety of files easily. You can also test a number
|
|
* of files at once by typing "pngtest -m file1.png file2.png ..."
|
|
*/
|
|
|
|
#define _POSIX_SOURCE 1
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
/* Defined so I can write to a file on gui/windowing platforms */
|
|
/* #define STDERR stderr */
|
|
#define STDERR stdout /* For DOS */
|
|
|
|
#include "png.h"
|
|
|
|
/* Known chunks that exist in pngtest.png must be supported or pngtest will fail
|
|
* simply as a result of re-ordering them. This may be fixed in 1.7
|
|
*
|
|
* pngtest allocates a single row buffer for each row and overwrites it,
|
|
* therefore if the write side doesn't support the writing of interlaced images
|
|
* nothing can be done for an interlaced image (and the code below will fail
|
|
* horribly trying to write extra data after writing garbage).
|
|
*/
|
|
#if defined PNG_READ_SUPPORTED && /* else nothing can be done */\
|
|
defined PNG_READ_bKGD_SUPPORTED &&\
|
|
defined PNG_READ_cHRM_SUPPORTED &&\
|
|
defined PNG_READ_gAMA_SUPPORTED &&\
|
|
defined PNG_READ_oFFs_SUPPORTED &&\
|
|
defined PNG_READ_pCAL_SUPPORTED &&\
|
|
defined PNG_READ_pHYs_SUPPORTED &&\
|
|
defined PNG_READ_sBIT_SUPPORTED &&\
|
|
defined PNG_READ_sCAL_SUPPORTED &&\
|
|
defined PNG_READ_sRGB_SUPPORTED &&\
|
|
defined PNG_READ_sPLT_SUPPORTED &&\
|
|
defined PNG_READ_tEXt_SUPPORTED &&\
|
|
defined PNG_READ_tIME_SUPPORTED &&\
|
|
defined PNG_READ_zTXt_SUPPORTED &&\
|
|
(defined PNG_WRITE_INTERLACING_SUPPORTED || PNG_LIBPNG_VER >= 10700)
|
|
|
|
#ifdef PNG_ZLIB_HEADER
|
|
# include PNG_ZLIB_HEADER /* defined by pnglibconf.h from 1.7 */
|
|
#else
|
|
# include "zlib.h"
|
|
#endif
|
|
|
|
/* Copied from pngpriv.h but only used in error messages below. */
|
|
#ifndef PNG_ZBUF_SIZE
|
|
# define PNG_ZBUF_SIZE 8192
|
|
#endif
|
|
#define FCLOSE(file) fclose(file)
|
|
|
|
#ifndef PNG_STDIO_SUPPORTED
|
|
typedef FILE * png_FILE_p;
|
|
#endif
|
|
|
|
/* Makes pngtest verbose so we can find problems. */
|
|
#ifndef PNG_DEBUG
|
|
# define PNG_DEBUG 0
|
|
#endif
|
|
|
|
#if PNG_DEBUG > 1
|
|
# define pngtest_debug(m) ((void)fprintf(stderr, m "\n"))
|
|
# define pngtest_debug1(m,p1) ((void)fprintf(stderr, m "\n", p1))
|
|
# define pngtest_debug2(m,p1,p2) ((void)fprintf(stderr, m "\n", p1, p2))
|
|
#else
|
|
# define pngtest_debug(m) ((void)0)
|
|
# define pngtest_debug1(m,p1) ((void)0)
|
|
# define pngtest_debug2(m,p1,p2) ((void)0)
|
|
#endif
|
|
|
|
#if !PNG_DEBUG
|
|
# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
|
|
#endif
|
|
|
|
#ifndef PNG_UNUSED
|
|
# define PNG_UNUSED(param) (void)param;
|
|
#endif
|
|
|
|
/* Turn on CPU timing
|
|
#define PNGTEST_TIMING
|
|
*/
|
|
|
|
#ifndef PNG_FLOATING_POINT_SUPPORTED
|
|
#undef PNGTEST_TIMING
|
|
#endif
|
|
|
|
#ifdef PNGTEST_TIMING
|
|
static float t_start, t_stop, t_decode, t_encode, t_misc;
|
|
#include <time.h>
|
|
#endif
|
|
|
|
#ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
#define PNG_tIME_STRING_LENGTH 29
|
|
static int tIME_chunk_present = 0;
|
|
static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
|
|
|
|
#if PNG_LIBPNG_VER < 10619
|
|
#define png_convert_to_rfc1123_buffer(ts, t) tIME_to_str(read_ptr, ts, t)
|
|
|
|
static int
|
|
tIME_to_str(png_structp png_ptr, png_charp ts, png_const_timep t)
|
|
{
|
|
png_const_charp str = png_convert_to_rfc1123(png_ptr, t);
|
|
|
|
if (str == NULL)
|
|
return 0;
|
|
|
|
strcpy(ts, str);
|
|
return 1;
|
|
}
|
|
#endif /* older libpng */
|
|
#endif
|
|
|
|
static int verbose = 0;
|
|
static int strict = 0;
|
|
static int relaxed = 0;
|
|
static int xfail = 0;
|
|
static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */
|
|
static int error_count = 0; /* count calls to png_error */
|
|
static int warning_count = 0; /* count calls to png_warning */
|
|
|
|
/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
|
|
#ifndef png_jmpbuf
|
|
# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
|
|
#endif
|
|
|
|
/* Defines for unknown chunk handling if required. */
|
|
#ifndef PNG_HANDLE_CHUNK_ALWAYS
|
|
# define PNG_HANDLE_CHUNK_ALWAYS 3
|
|
#endif
|
|
#ifndef PNG_HANDLE_CHUNK_IF_SAFE
|
|
# define PNG_HANDLE_CHUNK_IF_SAFE 2
|
|
#endif
|
|
|
|
/* Utility to save typing/errors, the argument must be a name */
|
|
#define MEMZERO(var) ((void)memset(&var, 0, sizeof var))
|
|
|
|
/* Example of using row callbacks to make a simple progress meter */
|
|
static int status_pass = 1;
|
|
static int status_dots_requested = 0;
|
|
static int status_dots = 1;
|
|
|
|
static void PNGCBAPI
|
|
read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
|
|
{
|
|
if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
|
|
return;
|
|
|
|
if (status_pass != pass)
|
|
{
|
|
fprintf(stdout, "\n Pass %d: ", pass);
|
|
status_pass = pass;
|
|
status_dots = 31;
|
|
}
|
|
|
|
status_dots--;
|
|
|
|
if (status_dots == 0)
|
|
{
|
|
fprintf(stdout, "\n ");
|
|
status_dots=30;
|
|
}
|
|
|
|
fprintf(stdout, "r");
|
|
}
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
static void PNGCBAPI
|
|
write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
|
|
{
|
|
if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
|
|
return;
|
|
|
|
fprintf(stdout, "w");
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
/* Example of using a user transform callback (doesn't do anything at present).
|
|
*/
|
|
static void PNGCBAPI
|
|
read_user_callback(png_structp png_ptr, png_row_infop row_info, png_bytep data)
|
|
{
|
|
PNG_UNUSED(png_ptr)
|
|
PNG_UNUSED(row_info)
|
|
PNG_UNUSED(data)
|
|
}
|
|
#endif
|
|
|
|
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
/* Example of using user transform callback (we don't transform anything,
|
|
* but merely count the zero samples)
|
|
*/
|
|
|
|
static png_uint_32 zero_samples;
|
|
|
|
static void PNGCBAPI
|
|
count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
|
|
{
|
|
png_bytep dp = data;
|
|
if (png_ptr == NULL)
|
|
return;
|
|
|
|
/* Contents of row_info:
|
|
* png_uint_32 width width of row
|
|
* png_uint_32 rowbytes number of bytes in row
|
|
* png_byte color_type color type of pixels
|
|
* png_byte bit_depth bit depth of samples
|
|
* png_byte channels number of channels (1-4)
|
|
* png_byte pixel_depth bits per pixel (depth*channels)
|
|
*/
|
|
|
|
/* Counts the number of zero samples (or zero pixels if color_type is 3 */
|
|
|
|
if (row_info->color_type == 0 || row_info->color_type == 3)
|
|
{
|
|
int pos = 0;
|
|
png_uint_32 n, nstop;
|
|
|
|
for (n = 0, nstop=row_info->width; n<nstop; n++)
|
|
{
|
|
if (row_info->bit_depth == 1)
|
|
{
|
|
if (((*dp << pos++ ) & 0x80) == 0)
|
|
zero_samples++;
|
|
|
|
if (pos == 8)
|
|
{
|
|
pos = 0;
|
|
dp++;
|
|
}
|
|
}
|
|
|
|
if (row_info->bit_depth == 2)
|
|
{
|
|
if (((*dp << (pos+=2)) & 0xc0) == 0)
|
|
zero_samples++;
|
|
|
|
if (pos == 8)
|
|
{
|
|
pos = 0;
|
|
dp++;
|
|
}
|
|
}
|
|
|
|
if (row_info->bit_depth == 4)
|
|
{
|
|
if (((*dp << (pos+=4)) & 0xf0) == 0)
|
|
zero_samples++;
|
|
|
|
if (pos == 8)
|
|
{
|
|
pos = 0;
|
|
dp++;
|
|
}
|
|
}
|
|
|
|
if (row_info->bit_depth == 8)
|
|
if (*dp++ == 0)
|
|
zero_samples++;
|
|
|
|
if (row_info->bit_depth == 16)
|
|
{
|
|
if ((*dp | *(dp+1)) == 0)
|
|
zero_samples++;
|
|
dp+=2;
|
|
}
|
|
}
|
|
}
|
|
else /* Other color types */
|
|
{
|
|
png_uint_32 n, nstop;
|
|
int channel;
|
|
int color_channels = row_info->channels;
|
|
if (row_info->color_type > 3)
|
|
color_channels--;
|
|
|
|
for (n = 0, nstop=row_info->width; n<nstop; n++)
|
|
{
|
|
for (channel = 0; channel < color_channels; channel++)
|
|
{
|
|
if (row_info->bit_depth == 8)
|
|
if (*dp++ == 0)
|
|
zero_samples++;
|
|
|
|
if (row_info->bit_depth == 16)
|
|
{
|
|
if ((*dp | *(dp+1)) == 0)
|
|
zero_samples++;
|
|
|
|
dp+=2;
|
|
}
|
|
}
|
|
if (row_info->color_type > 3)
|
|
{
|
|
dp++;
|
|
if (row_info->bit_depth == 16)
|
|
dp++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif /* WRITE_USER_TRANSFORM */
|
|
|
|
#ifndef PNG_STDIO_SUPPORTED
|
|
/* START of code to validate stdio-free compilation */
|
|
/* These copies of the default read/write functions come from pngrio.c and
|
|
* pngwio.c. They allow "don't include stdio" testing of the library.
|
|
* This is the function that does the actual reading of data. If you are
|
|
* not reading from a standard C stream, you should create a replacement
|
|
* read_data function and use it at run time with png_set_read_fn(), rather
|
|
* than changing the library.
|
|
*/
|
|
|
|
#ifdef PNG_IO_STATE_SUPPORTED
|
|
void
|
|
pngtest_check_io_state(png_structp png_ptr, size_t data_length,
|
|
png_uint_32 io_op);
|
|
void
|
|
pngtest_check_io_state(png_structp png_ptr, size_t data_length,
|
|
png_uint_32 io_op)
|
|
{
|
|
png_uint_32 io_state = png_get_io_state(png_ptr);
|
|
int err = 0;
|
|
|
|
/* Check if the current operation (reading / writing) is as expected. */
|
|
if ((io_state & PNG_IO_MASK_OP) != io_op)
|
|
png_error(png_ptr, "Incorrect operation in I/O state");
|
|
|
|
/* Check if the buffer size specific to the current location
|
|
* (file signature / header / data / crc) is as expected.
|
|
*/
|
|
switch (io_state & PNG_IO_MASK_LOC)
|
|
{
|
|
case PNG_IO_SIGNATURE:
|
|
if (data_length > 8)
|
|
err = 1;
|
|
break;
|
|
case PNG_IO_CHUNK_HDR:
|
|
if (data_length != 8)
|
|
err = 1;
|
|
break;
|
|
case PNG_IO_CHUNK_DATA:
|
|
break; /* no restrictions here */
|
|
case PNG_IO_CHUNK_CRC:
|
|
if (data_length != 4)
|
|
err = 1;
|
|
break;
|
|
default:
|
|
err = 1; /* uninitialized */
|
|
}
|
|
if (err != 0)
|
|
png_error(png_ptr, "Bad I/O state or buffer size");
|
|
}
|
|
#endif
|
|
|
|
static void PNGCBAPI
|
|
pngtest_read_data(png_structp png_ptr, png_bytep data, size_t length)
|
|
{
|
|
size_t check = 0;
|
|
png_voidp io_ptr;
|
|
|
|
/* fread() returns 0 on error, so it is OK to store this in a size_t
|
|
* instead of an int, which is what fread() actually returns.
|
|
*/
|
|
io_ptr = png_get_io_ptr(png_ptr);
|
|
if (io_ptr != NULL)
|
|
{
|
|
check = fread(data, 1, length, (png_FILE_p)io_ptr);
|
|
}
|
|
|
|
if (check != length)
|
|
{
|
|
png_error(png_ptr, "Read Error");
|
|
}
|
|
|
|
#ifdef PNG_IO_STATE_SUPPORTED
|
|
pngtest_check_io_state(png_ptr, length, PNG_IO_READING);
|
|
#endif
|
|
}
|
|
|
|
#ifdef PNG_WRITE_FLUSH_SUPPORTED
|
|
static void PNGCBAPI
|
|
pngtest_flush(png_structp png_ptr)
|
|
{
|
|
/* Do nothing; fflush() is said to be just a waste of energy. */
|
|
PNG_UNUSED(png_ptr) /* Stifle compiler warning */
|
|
}
|
|
#endif
|
|
|
|
/* This is the function that does the actual writing of data. If you are
|
|
* not writing to a standard C stream, you should create a replacement
|
|
* write_data function and use it at run time with png_set_write_fn(), rather
|
|
* than changing the library.
|
|
*/
|
|
static void PNGCBAPI
|
|
pngtest_write_data(png_structp png_ptr, png_bytep data, size_t length)
|
|
{
|
|
size_t check;
|
|
|
|
check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));
|
|
|
|
if (check != length)
|
|
{
|
|
png_error(png_ptr, "Write Error");
|
|
}
|
|
|
|
#ifdef PNG_IO_STATE_SUPPORTED
|
|
pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING);
|
|
#endif
|
|
}
|
|
#endif /* !STDIO */
|
|
|
|
/* This function is called when there is a warning, but the library thinks
|
|
* it can continue anyway. Replacement functions don't have to do anything
|
|
* here if you don't want to. In the default configuration, png_ptr is
|
|
* not used, but it is passed in case it may be useful.
|
|
*/
|
|
typedef struct
|
|
{
|
|
const char *file_name;
|
|
} pngtest_error_parameters;
|
|
|
|
static void PNGCBAPI
|
|
pngtest_warning(png_structp png_ptr, png_const_charp message)
|
|
{
|
|
const char *name = "UNKNOWN (ERROR!)";
|
|
pngtest_error_parameters *test =
|
|
(pngtest_error_parameters*)png_get_error_ptr(png_ptr);
|
|
|
|
++warning_count;
|
|
|
|
if (test != NULL && test->file_name != NULL)
|
|
name = test->file_name;
|
|
|
|
fprintf(STDERR, "\n%s: libpng warning: %s\n", name, message);
|
|
}
|
|
|
|
/* This is the default error handling function. Note that replacements for
|
|
* this function MUST NOT RETURN, or the program will likely crash. This
|
|
* function is used by default, or if the program supplies NULL for the
|
|
* error function pointer in png_set_error_fn().
|
|
*/
|
|
static void PNGCBAPI
|
|
pngtest_error(png_structp png_ptr, png_const_charp message)
|
|
{
|
|
++error_count;
|
|
|
|
pngtest_warning(png_ptr, message);
|
|
/* We can return because png_error calls the default handler, which is
|
|
* actually OK in this case.
|
|
*/
|
|
}
|
|
|
|
/* END of code to validate stdio-free compilation */
|
|
|
|
/* START of code to validate memory allocation and deallocation */
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
|
/* Allocate memory. For reasonable files, size should never exceed
|
|
* 64K. However, zlib may allocate more than 64K if you don't tell
|
|
* it not to. See zconf.h and png.h for more information. zlib does
|
|
* need to allocate exactly 64K, so whatever you call here must
|
|
* have the ability to do that.
|
|
*
|
|
* This piece of code can be compiled to validate max 64K allocations
|
|
* by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
|
|
*/
|
|
typedef struct memory_information
|
|
{
|
|
png_alloc_size_t size;
|
|
png_voidp pointer;
|
|
struct memory_information *next;
|
|
} memory_information;
|
|
typedef memory_information *memory_infop;
|
|
|
|
static memory_infop pinformation = NULL;
|
|
static int current_allocation = 0;
|
|
static int maximum_allocation = 0;
|
|
static int total_allocation = 0;
|
|
static int num_allocations = 0;
|
|
|
|
png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr,
|
|
png_alloc_size_t size));
|
|
void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
|
|
|
|
png_voidp
|
|
PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
|
|
{
|
|
|
|
/* png_malloc has already tested for NULL; png_create_struct calls
|
|
* png_debug_malloc directly, with png_ptr == NULL which is OK
|
|
*/
|
|
|
|
if (size == 0)
|
|
return (NULL);
|
|
|
|
/* This calls the library allocator twice, once to get the requested
|
|
buffer and once to get a new free list entry. */
|
|
{
|
|
/* Disable malloc_fn and free_fn */
|
|
memory_infop pinfo;
|
|
png_set_mem_fn(png_ptr, NULL, NULL, NULL);
|
|
pinfo = (memory_infop)png_malloc(png_ptr,
|
|
(sizeof *pinfo));
|
|
pinfo->size = size;
|
|
current_allocation += size;
|
|
total_allocation += size;
|
|
num_allocations ++;
|
|
|
|
if (current_allocation > maximum_allocation)
|
|
maximum_allocation = current_allocation;
|
|
|
|
pinfo->pointer = png_malloc(png_ptr, size);
|
|
/* Restore malloc_fn and free_fn */
|
|
|
|
png_set_mem_fn(png_ptr,
|
|
NULL, png_debug_malloc, png_debug_free);
|
|
|
|
if (size != 0 && pinfo->pointer == NULL)
|
|
{
|
|
current_allocation -= size;
|
|
total_allocation -= size;
|
|
png_error(png_ptr,
|
|
"out of memory in pngtest->png_debug_malloc");
|
|
}
|
|
|
|
pinfo->next = pinformation;
|
|
pinformation = pinfo;
|
|
/* Make sure the caller isn't assuming zeroed memory. */
|
|
memset(pinfo->pointer, 0xdd, pinfo->size);
|
|
|
|
if (verbose != 0)
|
|
printf("png_malloc %lu bytes at %p\n", (unsigned long)size,
|
|
pinfo->pointer);
|
|
|
|
return (png_voidp)(pinfo->pointer);
|
|
}
|
|
}
|
|
|
|
/* Free a pointer. It is removed from the list at the same time. */
|
|
void PNGCBAPI
|
|
png_debug_free(png_structp png_ptr, png_voidp ptr)
|
|
{
|
|
if (png_ptr == NULL)
|
|
fprintf(STDERR, "NULL pointer to png_debug_free.\n");
|
|
|
|
if (ptr == 0)
|
|
{
|
|
#if 0 /* This happens all the time. */
|
|
fprintf(STDERR, "WARNING: freeing NULL pointer\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
/* Unlink the element from the list. */
|
|
if (pinformation != NULL)
|
|
{
|
|
memory_infop *ppinfo = &pinformation;
|
|
|
|
for (;;)
|
|
{
|
|
memory_infop pinfo = *ppinfo;
|
|
|
|
if (pinfo->pointer == ptr)
|
|
{
|
|
*ppinfo = pinfo->next;
|
|
current_allocation -= pinfo->size;
|
|
if (current_allocation < 0)
|
|
fprintf(STDERR, "Duplicate free of memory\n");
|
|
/* We must free the list element too, but first kill
|
|
the memory that is to be freed. */
|
|
memset(ptr, 0x55, pinfo->size);
|
|
free(pinfo);
|
|
pinfo = NULL;
|
|
break;
|
|
}
|
|
|
|
if (pinfo->next == NULL)
|
|
{
|
|
fprintf(STDERR, "Pointer %p not found\n", ptr);
|
|
break;
|
|
}
|
|
|
|
ppinfo = &pinfo->next;
|
|
}
|
|
}
|
|
|
|
/* Finally free the data. */
|
|
if (verbose != 0)
|
|
printf("Freeing %p\n", ptr);
|
|
|
|
if (ptr != NULL)
|
|
free(ptr);
|
|
ptr = NULL;
|
|
}
|
|
#endif /* USER_MEM && DEBUG */
|
|
/* END of code to test memory allocation/deallocation */
|
|
|
|
|
|
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
|
|
/* Demonstration of user chunk support of the sTER and vpAg chunks */
|
|
|
|
/* (sTER is a public chunk not yet known by libpng. vpAg is a private
|
|
chunk used in ImageMagick to store "virtual page" size). */
|
|
|
|
static struct user_chunk_data
|
|
{
|
|
png_const_infop info_ptr;
|
|
png_uint_32 vpAg_width, vpAg_height;
|
|
png_byte vpAg_units;
|
|
png_byte sTER_mode;
|
|
int location[2];
|
|
}
|
|
user_chunk_data;
|
|
|
|
/* Used for location and order; zero means nothing. */
|
|
#define have_sTER 0x01
|
|
#define have_vpAg 0x02
|
|
#define before_PLTE 0x10
|
|
#define before_IDAT 0x20
|
|
#define after_IDAT 0x40
|
|
|
|
static void
|
|
init_callback_info(png_const_infop info_ptr)
|
|
{
|
|
MEMZERO(user_chunk_data);
|
|
user_chunk_data.info_ptr = info_ptr;
|
|
}
|
|
|
|
static int
|
|
set_location(png_structp png_ptr, struct user_chunk_data *data, int what)
|
|
{
|
|
int location;
|
|
|
|
if ((data->location[0] & what) != 0 || (data->location[1] & what) != 0)
|
|
return 0; /* already have one of these */
|
|
|
|
/* Find where we are (the code below zeroes info_ptr to indicate that the
|
|
* chunks before the first IDAT have been read.)
|
|
*/
|
|
if (data->info_ptr == NULL) /* after IDAT */
|
|
location = what | after_IDAT;
|
|
|
|
else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE) != 0)
|
|
location = what | before_IDAT;
|
|
|
|
else
|
|
location = what | before_PLTE;
|
|
|
|
if (data->location[0] == 0)
|
|
data->location[0] = location;
|
|
|
|
else
|
|
data->location[1] = location;
|
|
|
|
return 1; /* handled */
|
|
}
|
|
|
|
static int PNGCBAPI
|
|
read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk)
|
|
{
|
|
struct user_chunk_data *my_user_chunk_data =
|
|
(struct user_chunk_data*)png_get_user_chunk_ptr(png_ptr);
|
|
|
|
if (my_user_chunk_data == NULL)
|
|
png_error(png_ptr, "lost user chunk pointer");
|
|
|
|
/* Return one of the following:
|
|
* return (-n); chunk had an error
|
|
* return (0); did not recognize
|
|
* return (n); success
|
|
*
|
|
* The unknown chunk structure contains the chunk data:
|
|
* png_byte name[5];
|
|
* png_byte *data;
|
|
* size_t size;
|
|
*
|
|
* Note that libpng has already taken care of the CRC handling.
|
|
*/
|
|
|
|
if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
|
|
chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
|
|
{
|
|
/* Found sTER chunk */
|
|
if (chunk->size != 1)
|
|
return (-1); /* Error return */
|
|
|
|
if (chunk->data[0] != 0 && chunk->data[0] != 1)
|
|
return (-1); /* Invalid mode */
|
|
|
|
if (set_location(png_ptr, my_user_chunk_data, have_sTER) != 0)
|
|
{
|
|
my_user_chunk_data->sTER_mode=chunk->data[0];
|
|
return (1);
|
|
}
|
|
|
|
else
|
|
return (0); /* duplicate sTER - give it to libpng */
|
|
}
|
|
|
|
if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
|
|
chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
|
|
return (0); /* Did not recognize */
|
|
|
|
/* Found ImageMagick vpAg chunk */
|
|
|
|
if (chunk->size != 9)
|
|
return (-1); /* Error return */
|
|
|
|
if (set_location(png_ptr, my_user_chunk_data, have_vpAg) == 0)
|
|
return (0); /* duplicate vpAg */
|
|
|
|
my_user_chunk_data->vpAg_width = png_get_uint_31(png_ptr, chunk->data);
|
|
my_user_chunk_data->vpAg_height = png_get_uint_31(png_ptr, chunk->data + 4);
|
|
my_user_chunk_data->vpAg_units = chunk->data[8];
|
|
|
|
return (1);
|
|
}
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
static void
|
|
write_sTER_chunk(png_structp write_ptr)
|
|
{
|
|
png_byte sTER[5] = {115, 84, 69, 82, '\0'};
|
|
|
|
if (verbose != 0)
|
|
fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode);
|
|
|
|
png_write_chunk(write_ptr, sTER, &user_chunk_data.sTER_mode, 1);
|
|
}
|
|
|
|
static void
|
|
write_vpAg_chunk(png_structp write_ptr)
|
|
{
|
|
png_byte vpAg[5] = {118, 112, 65, 103, '\0'};
|
|
|
|
png_byte vpag_chunk_data[9];
|
|
|
|
if (verbose != 0)
|
|
fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n",
|
|
(unsigned long)user_chunk_data.vpAg_width,
|
|
(unsigned long)user_chunk_data.vpAg_height,
|
|
user_chunk_data.vpAg_units);
|
|
|
|
png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width);
|
|
png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height);
|
|
vpag_chunk_data[8] = user_chunk_data.vpAg_units;
|
|
png_write_chunk(write_ptr, vpAg, vpag_chunk_data, 9);
|
|
}
|
|
|
|
static void
|
|
write_chunks(png_structp write_ptr, int location)
|
|
{
|
|
int i;
|
|
|
|
/* Notice that this preserves the original chunk order, however chunks
|
|
* intercepted by the callback will be written *after* chunks passed to
|
|
* libpng. This will actually reverse a pair of sTER chunks or a pair of
|
|
* vpAg chunks, resulting in an error later. This is not worth worrying
|
|
* about - the chunks should not be duplicated!
|
|
*/
|
|
for (i=0; i<2; ++i)
|
|
{
|
|
if (user_chunk_data.location[i] == (location | have_sTER))
|
|
write_sTER_chunk(write_ptr);
|
|
|
|
else if (user_chunk_data.location[i] == (location | have_vpAg))
|
|
write_vpAg_chunk(write_ptr);
|
|
}
|
|
}
|
|
#endif /* WRITE */
|
|
#else /* !READ_USER_CHUNKS */
|
|
# define write_chunks(pp,loc) ((void)0)
|
|
#endif
|
|
/* END of code to demonstrate user chunk support */
|
|
|
|
/* START of code to check that libpng has the required text support; this only
|
|
* checks for the write support because if read support is missing the chunk
|
|
* will simply not be reported back to pngtest.
|
|
*/
|
|
#ifdef PNG_TEXT_SUPPORTED
|
|
static void
|
|
pngtest_check_text_support(png_structp png_ptr, png_textp text_ptr,
|
|
int num_text)
|
|
{
|
|
while (num_text > 0)
|
|
{
|
|
switch (text_ptr[--num_text].compression)
|
|
{
|
|
case PNG_TEXT_COMPRESSION_NONE:
|
|
break;
|
|
|
|
case PNG_TEXT_COMPRESSION_zTXt:
|
|
# ifndef PNG_WRITE_zTXt_SUPPORTED
|
|
++unsupported_chunks;
|
|
/* In libpng 1.7 this now does an app-error, so stop it: */
|
|
text_ptr[num_text].compression = PNG_TEXT_COMPRESSION_NONE;
|
|
# endif
|
|
break;
|
|
|
|
case PNG_ITXT_COMPRESSION_NONE:
|
|
case PNG_ITXT_COMPRESSION_zTXt:
|
|
# ifndef PNG_WRITE_iTXt_SUPPORTED
|
|
++unsupported_chunks;
|
|
text_ptr[num_text].compression = PNG_TEXT_COMPRESSION_NONE;
|
|
# endif
|
|
break;
|
|
|
|
default:
|
|
/* This is an error */
|
|
png_error(png_ptr, "invalid text chunk compression field");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
/* END of code to check that libpng has the required text support */
|
|
|
|
/* Test one file */
|
|
static int
|
|
test_one_file(const char *inname, const char *outname)
|
|
{
|
|
static png_FILE_p fpin;
|
|
static png_FILE_p fpout; /* "static" prevents setjmp corruption */
|
|
pngtest_error_parameters error_parameters;
|
|
png_structp read_ptr;
|
|
png_infop read_info_ptr, end_info_ptr;
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
png_structp write_ptr;
|
|
png_infop write_info_ptr;
|
|
png_infop write_end_info_ptr;
|
|
#ifdef PNG_WRITE_FILTER_SUPPORTED
|
|
int interlace_preserved = 1;
|
|
#endif /* WRITE_FILTER */
|
|
#else /* !WRITE */
|
|
png_structp write_ptr = NULL;
|
|
png_infop write_info_ptr = NULL;
|
|
png_infop write_end_info_ptr = NULL;
|
|
#endif /* !WRITE */
|
|
png_bytep row_buf;
|
|
png_uint_32 y;
|
|
png_uint_32 width, height;
|
|
volatile int num_passes;
|
|
int pass;
|
|
int bit_depth, color_type;
|
|
#ifdef PNG_APNG_SUPPORTED
|
|
png_uint_32 num_frames;
|
|
png_uint_32 num_plays;
|
|
#endif
|
|
|
|
row_buf = NULL;
|
|
error_parameters.file_name = inname;
|
|
|
|
if ((fpin = fopen(inname, "rb")) == NULL)
|
|
{
|
|
fprintf(STDERR, "Could not find input file %s\n", inname);
|
|
return (1);
|
|
}
|
|
|
|
if ((fpout = fopen(outname, "wb")) == NULL)
|
|
{
|
|
fprintf(STDERR, "Could not open output file %s\n", outname);
|
|
FCLOSE(fpin);
|
|
return (1);
|
|
}
|
|
|
|
pngtest_debug("Allocating read and write structures");
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
read_ptr =
|
|
png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
|
|
NULL, NULL, NULL, png_debug_malloc, png_debug_free);
|
|
#else
|
|
read_ptr =
|
|
png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
#endif
|
|
png_set_error_fn(read_ptr, &error_parameters, pngtest_error,
|
|
pngtest_warning);
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
write_ptr =
|
|
png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
|
|
NULL, NULL, NULL, png_debug_malloc, png_debug_free);
|
|
#else
|
|
write_ptr =
|
|
png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
#endif
|
|
png_set_error_fn(write_ptr, &error_parameters, pngtest_error,
|
|
pngtest_warning);
|
|
#endif
|
|
pngtest_debug("Allocating read_info, write_info and end_info structures");
|
|
read_info_ptr = png_create_info_struct(read_ptr);
|
|
end_info_ptr = png_create_info_struct(read_ptr);
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
write_info_ptr = png_create_info_struct(write_ptr);
|
|
write_end_info_ptr = png_create_info_struct(write_ptr);
|
|
#endif
|
|
|
|
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
|
|
init_callback_info(read_info_ptr);
|
|
png_set_read_user_chunk_fn(read_ptr, &user_chunk_data,
|
|
read_user_chunk_callback);
|
|
#endif
|
|
|
|
#ifdef PNG_SETJMP_SUPPORTED
|
|
pngtest_debug("Setting jmpbuf for read struct");
|
|
if (setjmp(png_jmpbuf(read_ptr)))
|
|
{
|
|
fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
|
|
png_free(read_ptr, row_buf);
|
|
row_buf = NULL;
|
|
if (verbose != 0)
|
|
fprintf(STDERR, " destroy read structs\n");
|
|
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
if (verbose != 0)
|
|
fprintf(STDERR, " destroy write structs\n");
|
|
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
|
|
png_destroy_write_struct(&write_ptr, &write_info_ptr);
|
|
#endif
|
|
FCLOSE(fpin);
|
|
FCLOSE(fpout);
|
|
return (1);
|
|
}
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
pngtest_debug("Setting jmpbuf for write struct");
|
|
|
|
if (setjmp(png_jmpbuf(write_ptr)))
|
|
{
|
|
fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
|
|
png_free(read_ptr, row_buf);
|
|
row_buf = NULL;
|
|
if (verbose != 0)
|
|
fprintf(STDERR, " destroying read structs\n");
|
|
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
|
|
if (verbose != 0)
|
|
fprintf(STDERR, " destroying write structs\n");
|
|
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
|
|
png_destroy_write_struct(&write_ptr, &write_info_ptr);
|
|
FCLOSE(fpin);
|
|
FCLOSE(fpout);
|
|
return (1);
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
|
|
if (strict != 0)
|
|
{
|
|
/* Treat png_benign_error() as errors on read */
|
|
png_set_benign_errors(read_ptr, 0);
|
|
|
|
# ifdef PNG_WRITE_SUPPORTED
|
|
/* Treat them as errors on write */
|
|
png_set_benign_errors(write_ptr, 0);
|
|
# endif
|
|
|
|
/* if strict is not set, then app warnings and errors are treated as
|
|
* warnings in release builds, but not in unstable builds; this can be
|
|
* changed with '--relaxed'.
|
|
*/
|
|
}
|
|
|
|
else if (relaxed != 0)
|
|
{
|
|
/* Allow application (pngtest) errors and warnings to pass */
|
|
png_set_benign_errors(read_ptr, 1);
|
|
|
|
/* Turn off CRC checking while reading */
|
|
png_set_crc_action(read_ptr, PNG_CRC_QUIET_USE, PNG_CRC_QUIET_USE);
|
|
|
|
#ifdef PNG_IGNORE_ADLER32
|
|
/* Turn off ADLER32 checking while reading */
|
|
png_set_option(read_ptr, PNG_IGNORE_ADLER32, PNG_OPTION_ON);
|
|
#endif
|
|
|
|
# ifdef PNG_WRITE_SUPPORTED
|
|
png_set_benign_errors(write_ptr, 1);
|
|
# endif
|
|
|
|
}
|
|
#endif /* BENIGN_ERRORS */
|
|
|
|
pngtest_debug("Initializing input and output streams");
|
|
#ifdef PNG_STDIO_SUPPORTED
|
|
png_init_io(read_ptr, fpin);
|
|
# ifdef PNG_WRITE_SUPPORTED
|
|
png_init_io(write_ptr, fpout);
|
|
# endif
|
|
#else
|
|
png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
|
|
# ifdef PNG_WRITE_SUPPORTED
|
|
png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
|
|
# ifdef PNG_WRITE_FLUSH_SUPPORTED
|
|
pngtest_flush);
|
|
# else
|
|
NULL);
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
if (status_dots_requested == 1)
|
|
{
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
png_set_write_status_fn(write_ptr, write_row_callback);
|
|
#endif
|
|
png_set_read_status_fn(read_ptr, read_row_callback);
|
|
}
|
|
|
|
else
|
|
{
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
png_set_write_status_fn(write_ptr, NULL);
|
|
#endif
|
|
png_set_read_status_fn(read_ptr, NULL);
|
|
}
|
|
|
|
#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
png_set_read_user_transform_fn(read_ptr, read_user_callback);
|
|
#endif
|
|
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
zero_samples = 0;
|
|
png_set_write_user_transform_fn(write_ptr, count_zero_samples);
|
|
#endif
|
|
|
|
#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
|
|
/* Preserve all the unknown chunks, if possible. If this is disabled then,
|
|
* even if the png_{get,set}_unknown_chunks stuff is enabled, we can't use
|
|
* libpng to *save* the unknown chunks on read (because we can't switch the
|
|
* save option on!)
|
|
*
|
|
* Notice that if SET_UNKNOWN_CHUNKS is *not* supported read will discard all
|
|
* unknown chunks and write will write them all.
|
|
*/
|
|
#ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
|
|
png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
|
|
NULL, 0);
|
|
#endif
|
|
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS,
|
|
NULL, 0);
|
|
#endif
|
|
#endif
|
|
|
|
pngtest_debug("Reading info struct");
|
|
png_read_info(read_ptr, read_info_ptr);
|
|
|
|
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
|
|
/* This is a bit of a hack; there is no obvious way in the callback function
|
|
* to determine that the chunks before the first IDAT have been read, so
|
|
* remove the info_ptr (which is only used to determine position relative to
|
|
* PLTE) here to indicate that we are after the IDAT.
|
|
*/
|
|
user_chunk_data.info_ptr = NULL;
|
|
#endif
|
|
|
|
pngtest_debug("Transferring info struct");
|
|
{
|
|
int interlace_type, compression_type, filter_type;
|
|
|
|
if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
|
|
&color_type, &interlace_type, &compression_type, &filter_type) != 0)
|
|
{
|
|
png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
|
|
color_type, interlace_type, compression_type, filter_type);
|
|
/* num_passes may not be available below if interlace support is not
|
|
* provided by libpng for both read and write.
|
|
*/
|
|
switch (interlace_type)
|
|
{
|
|
case PNG_INTERLACE_NONE:
|
|
num_passes = 1;
|
|
break;
|
|
|
|
case PNG_INTERLACE_ADAM7:
|
|
num_passes = 7;
|
|
break;
|
|
|
|
default:
|
|
png_error(read_ptr, "invalid interlace type");
|
|
/*NOT REACHED*/
|
|
}
|
|
}
|
|
|
|
else
|
|
png_error(read_ptr, "png_get_IHDR failed");
|
|
}
|
|
#ifdef PNG_FIXED_POINT_SUPPORTED
|
|
#ifdef PNG_cHRM_SUPPORTED
|
|
{
|
|
png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
|
|
blue_y;
|
|
|
|
if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
|
|
&red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0)
|
|
{
|
|
png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
|
|
red_y, green_x, green_y, blue_x, blue_y);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_gAMA_SUPPORTED
|
|
{
|
|
png_fixed_point gamma;
|
|
|
|
if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma) != 0)
|
|
png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
|
|
}
|
|
#endif
|
|
#else /* Use floating point versions */
|
|
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
|
#ifdef PNG_cHRM_SUPPORTED
|
|
{
|
|
double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
|
|
blue_y;
|
|
|
|
if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
|
|
&red_y, &green_x, &green_y, &blue_x, &blue_y) != 0)
|
|
{
|
|
png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
|
|
red_y, green_x, green_y, blue_x, blue_y);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_gAMA_SUPPORTED
|
|
{
|
|
double gamma;
|
|
|
|
if (png_get_gAMA(read_ptr, read_info_ptr, &gamma) != 0)
|
|
png_set_gAMA(write_ptr, write_info_ptr, gamma);
|
|
}
|
|
#endif
|
|
#endif /* Floating point */
|
|
#endif /* Fixed point */
|
|
#ifdef PNG_iCCP_SUPPORTED
|
|
{
|
|
png_charp name;
|
|
png_bytep profile;
|
|
png_uint_32 proflen;
|
|
int compression_type;
|
|
|
|
if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
|
|
&profile, &proflen) != 0)
|
|
{
|
|
png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
|
|
profile, proflen);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_sRGB_SUPPORTED
|
|
{
|
|
int intent;
|
|
|
|
if (png_get_sRGB(read_ptr, read_info_ptr, &intent) != 0)
|
|
png_set_sRGB(write_ptr, write_info_ptr, intent);
|
|
}
|
|
#endif
|
|
{
|
|
png_colorp palette;
|
|
int num_palette;
|
|
|
|
if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette) != 0)
|
|
png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
|
|
}
|
|
#ifdef PNG_bKGD_SUPPORTED
|
|
{
|
|
png_color_16p background;
|
|
|
|
if (png_get_bKGD(read_ptr, read_info_ptr, &background) != 0)
|
|
{
|
|
png_set_bKGD(write_ptr, write_info_ptr, background);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_READ_eXIf_SUPPORTED
|
|
{
|
|
png_bytep exif=NULL;
|
|
png_uint_32 exif_length;
|
|
|
|
if (png_get_eXIf_1(read_ptr, read_info_ptr, &exif_length, &exif) != 0)
|
|
{
|
|
if (exif_length > 1)
|
|
fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1],
|
|
(unsigned long)exif_length);
|
|
# ifdef PNG_WRITE_eXIf_SUPPORTED
|
|
png_set_eXIf_1(write_ptr, write_info_ptr, exif_length, exif);
|
|
# endif
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_hIST_SUPPORTED
|
|
{
|
|
png_uint_16p hist;
|
|
|
|
if (png_get_hIST(read_ptr, read_info_ptr, &hist) != 0)
|
|
png_set_hIST(write_ptr, write_info_ptr, hist);
|
|
}
|
|
#endif
|
|
#ifdef PNG_oFFs_SUPPORTED
|
|
{
|
|
png_int_32 offset_x, offset_y;
|
|
int unit_type;
|
|
|
|
if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
|
|
&unit_type) != 0)
|
|
{
|
|
png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_pCAL_SUPPORTED
|
|
{
|
|
png_charp purpose, units;
|
|
png_charpp params;
|
|
png_int_32 X0, X1;
|
|
int type, nparams;
|
|
|
|
if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
|
|
&nparams, &units, ¶ms) != 0)
|
|
{
|
|
png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
|
|
nparams, units, params);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_pHYs_SUPPORTED
|
|
{
|
|
png_uint_32 res_x, res_y;
|
|
int unit_type;
|
|
|
|
if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y,
|
|
&unit_type) != 0)
|
|
png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
|
|
}
|
|
#endif
|
|
#ifdef PNG_sBIT_SUPPORTED
|
|
{
|
|
png_color_8p sig_bit;
|
|
|
|
if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit) != 0)
|
|
png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
|
|
}
|
|
#endif
|
|
#ifdef PNG_sCAL_SUPPORTED
|
|
#if defined(PNG_FLOATING_POINT_SUPPORTED) && \
|
|
defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
|
|
{
|
|
int unit;
|
|
double scal_width, scal_height;
|
|
|
|
if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
|
|
&scal_height) != 0)
|
|
{
|
|
png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
|
|
}
|
|
}
|
|
#else
|
|
#ifdef PNG_FIXED_POINT_SUPPORTED
|
|
{
|
|
int unit;
|
|
png_charp scal_width, scal_height;
|
|
|
|
if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
|
|
&scal_height) != 0)
|
|
{
|
|
png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
|
|
scal_height);
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef PNG_sPLT_SUPPORTED
|
|
{
|
|
png_sPLT_tp entries;
|
|
|
|
int num_entries = (int) png_get_sPLT(read_ptr, read_info_ptr, &entries);
|
|
if (num_entries)
|
|
{
|
|
png_set_sPLT(write_ptr, write_info_ptr, entries, num_entries);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef PNG_TEXT_SUPPORTED
|
|
{
|
|
png_textp text_ptr;
|
|
int num_text;
|
|
|
|
if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
|
|
{
|
|
pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
|
|
|
|
pngtest_check_text_support(read_ptr, text_ptr, num_text);
|
|
|
|
if (verbose != 0)
|
|
{
|
|
int i;
|
|
|
|
fprintf(STDERR,"\n");
|
|
for (i=0; i<num_text; i++)
|
|
{
|
|
fprintf(STDERR," Text compression[%d]=%d\n",
|
|
i, text_ptr[i].compression);
|
|
}
|
|
}
|
|
|
|
png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_tIME_SUPPORTED
|
|
{
|
|
png_timep mod_time;
|
|
|
|
if (png_get_tIME(read_ptr, read_info_ptr, &mod_time) != 0)
|
|
{
|
|
png_set_tIME(write_ptr, write_info_ptr, mod_time);
|
|
#ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
if (png_convert_to_rfc1123_buffer(tIME_string, mod_time) != 0)
|
|
tIME_string[(sizeof tIME_string) - 1] = '\0';
|
|
|
|
else
|
|
{
|
|
strncpy(tIME_string, "*** invalid time ***", (sizeof tIME_string));
|
|
tIME_string[(sizeof tIME_string) - 1] = '\0';
|
|
}
|
|
|
|
tIME_chunk_present++;
|
|
#endif /* TIME_RFC1123 */
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_tRNS_SUPPORTED
|
|
{
|
|
png_bytep trans_alpha;
|
|
int num_trans;
|
|
png_color_16p trans_color;
|
|
|
|
if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
|
|
&trans_color) != 0)
|
|
{
|
|
int sample_max = (1 << bit_depth);
|
|
/* libpng doesn't reject a tRNS chunk with out-of-range samples */
|
|
if (!((color_type == PNG_COLOR_TYPE_GRAY &&
|
|
(int)trans_color->gray > sample_max) ||
|
|
(color_type == PNG_COLOR_TYPE_RGB &&
|
|
((int)trans_color->red > sample_max ||
|
|
(int)trans_color->green > sample_max ||
|
|
(int)trans_color->blue > sample_max))))
|
|
png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
|
|
trans_color);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef PNG_APNG_SUPPORTED
|
|
if (png_get_valid(read_ptr, read_info_ptr, PNG_INFO_acTL))
|
|
{
|
|
if (png_get_acTL(read_ptr, read_info_ptr, &num_frames, &num_plays))
|
|
{
|
|
png_byte is_hidden;
|
|
pngtest_debug2("Handling acTL chunks (frames %ld, plays %ld)",
|
|
num_frames, num_plays);
|
|
png_set_acTL(write_ptr, write_info_ptr, num_frames, num_plays);
|
|
is_hidden = png_get_first_frame_is_hidden(read_ptr, read_info_ptr);
|
|
png_set_first_frame_is_hidden(write_ptr, write_info_ptr, is_hidden);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
{
|
|
png_unknown_chunkp unknowns;
|
|
int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr,
|
|
&unknowns);
|
|
|
|
if (num_unknowns != 0)
|
|
{
|
|
png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
|
|
num_unknowns);
|
|
#if PNG_LIBPNG_VER < 10600
|
|
/* Copy the locations from the read_info_ptr. The automatically
|
|
* generated locations in write_end_info_ptr are wrong prior to 1.6.0
|
|
* because they are reset from the write pointer (removed in 1.6.0).
|
|
*/
|
|
{
|
|
int i;
|
|
for (i = 0; i < num_unknowns; i++)
|
|
png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
|
|
unknowns[i].location);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
pngtest_debug("Writing info struct");
|
|
|
|
/* Write the info in two steps so that if we write the 'unknown' chunks here
|
|
* they go to the correct place.
|
|
*/
|
|
png_write_info_before_PLTE(write_ptr, write_info_ptr);
|
|
|
|
write_chunks(write_ptr, before_PLTE); /* before PLTE */
|
|
|
|
png_write_info(write_ptr, write_info_ptr);
|
|
|
|
write_chunks(write_ptr, before_IDAT); /* after PLTE */
|
|
|
|
png_write_info(write_ptr, write_end_info_ptr);
|
|
|
|
write_chunks(write_ptr, after_IDAT); /* after IDAT */
|
|
|
|
#ifdef PNG_COMPRESSION_COMPAT
|
|
/* Test the 'compatibility' setting here, if it is available. */
|
|
png_set_compression(write_ptr, PNG_COMPRESSION_COMPAT);
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef SINGLE_ROWBUF_ALLOC
|
|
pngtest_debug("Allocating row buffer...");
|
|
row_buf = (png_bytep)png_malloc(read_ptr,
|
|
png_get_rowbytes(read_ptr, read_info_ptr));
|
|
|
|
pngtest_debug1("\t%p", row_buf);
|
|
#endif /* SINGLE_ROWBUF_ALLOC */
|
|
pngtest_debug("Writing row data");
|
|
|
|
#if defined(PNG_READ_INTERLACING_SUPPORTED) &&\
|
|
defined(PNG_WRITE_INTERLACING_SUPPORTED)
|
|
/* Both must be defined for libpng to be able to handle the interlace,
|
|
* otherwise it gets handled below by simply reading and writing the passes
|
|
* directly.
|
|
*/
|
|
if (png_set_interlace_handling(read_ptr) != num_passes)
|
|
png_error(write_ptr,
|
|
"png_set_interlace_handling(read): wrong pass count ");
|
|
if (png_set_interlace_handling(write_ptr) != num_passes)
|
|
png_error(write_ptr,
|
|
"png_set_interlace_handling(write): wrong pass count ");
|
|
#else /* png_set_interlace_handling not called on either read or write */
|
|
# define calc_pass_height
|
|
#endif /* not using libpng interlace handling */
|
|
|
|
#ifdef PNGTEST_TIMING
|
|
t_stop = (float)clock();
|
|
t_misc += (t_stop - t_start);
|
|
t_start = t_stop;
|
|
#endif
|
|
#ifdef PNG_APNG_SUPPORTED
|
|
if (png_get_valid(read_ptr, read_info_ptr, PNG_INFO_acTL))
|
|
{
|
|
png_uint_32 frame;
|
|
for (frame = 0; frame < num_frames; frame++)
|
|
{
|
|
png_uint_32 frame_width;
|
|
png_uint_32 frame_height;
|
|
png_uint_32 x_offset;
|
|
png_uint_32 y_offset;
|
|
png_uint_16 delay_num;
|
|
png_uint_16 delay_den;
|
|
png_byte dispose_op;
|
|
png_byte blend_op;
|
|
png_read_frame_head(read_ptr, read_info_ptr);
|
|
if (png_get_valid(read_ptr, read_info_ptr, PNG_INFO_fcTL))
|
|
{
|
|
png_get_next_frame_fcTL(read_ptr, read_info_ptr,
|
|
&frame_width, &frame_height,
|
|
&x_offset, &y_offset,
|
|
&delay_num, &delay_den,
|
|
&dispose_op, &blend_op);
|
|
}
|
|
else
|
|
{
|
|
frame_width = width;
|
|
frame_height = height;
|
|
x_offset = 0;
|
|
y_offset = 0;
|
|
delay_num = 1;
|
|
delay_den = 1;
|
|
dispose_op = PNG_DISPOSE_OP_NONE;
|
|
blend_op = PNG_BLEND_OP_SOURCE;
|
|
}
|
|
#ifdef PNG_WRITE_APNG_SUPPORTED
|
|
png_write_frame_head(write_ptr, write_info_ptr, (png_bytepp)&row_buf,
|
|
frame_width, frame_height,
|
|
x_offset, y_offset,
|
|
delay_num, delay_den,
|
|
dispose_op, blend_op);
|
|
#endif
|
|
for (pass = 0; pass < num_passes; pass++)
|
|
{
|
|
# ifdef calc_pass_height
|
|
png_uint_32 pass_height;
|
|
|
|
if (num_passes == 7) /* interlaced */
|
|
{
|
|
if (PNG_PASS_COLS(frame_width, pass) > 0)
|
|
pass_height = PNG_PASS_ROWS(frame_height, pass);
|
|
|
|
else
|
|
pass_height = 0;
|
|
}
|
|
|
|
else /* not interlaced */
|
|
pass_height = frame_height;
|
|
# else
|
|
# define pass_height frame_height
|
|
# endif
|
|
|
|
pngtest_debug1("Writing row data for pass %d", pass);
|
|
for (y = 0; y < pass_height; y++)
|
|
{
|
|
#ifndef SINGLE_ROWBUF_ALLOC
|
|
pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
|
|
|
|
row_buf = (png_bytep)png_malloc(read_ptr,
|
|
png_get_rowbytes(read_ptr, read_info_ptr));
|
|
|
|
pngtest_debug2("\t0x%08lx (%lu bytes)", (unsigned long)row_buf,
|
|
(unsigned long)png_get_rowbytes(read_ptr, read_info_ptr));
|
|
|
|
#endif /* !SINGLE_ROWBUF_ALLOC */
|
|
png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
#ifdef PNGTEST_TIMING
|
|
t_stop = (float)clock();
|
|
t_decode += (t_stop - t_start);
|
|
t_start = t_stop;
|
|
#endif
|
|
png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
|
|
#ifdef PNGTEST_TIMING
|
|
t_stop = (float)clock();
|
|
t_encode += (t_stop - t_start);
|
|
t_start = t_stop;
|
|
#endif
|
|
#endif /* PNG_WRITE_SUPPORTED */
|
|
|
|
#ifndef SINGLE_ROWBUF_ALLOC
|
|
pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);
|
|
png_free(read_ptr, row_buf);
|
|
row_buf = NULL;
|
|
#endif /* !SINGLE_ROWBUF_ALLOC */
|
|
}
|
|
}
|
|
#ifdef PNG_WRITE_APNG_SUPPORTED
|
|
png_write_frame_tail(write_ptr, write_info_ptr);
|
|
#endif
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
for (pass = 0; pass < num_passes; pass++)
|
|
{
|
|
# ifdef calc_pass_height
|
|
png_uint_32 pass_height;
|
|
|
|
if (num_passes == 7) /* interlaced */
|
|
{
|
|
if (PNG_PASS_COLS(width, pass) > 0)
|
|
pass_height = PNG_PASS_ROWS(height, pass);
|
|
|
|
else
|
|
pass_height = 0;
|
|
}
|
|
|
|
else /* not interlaced */
|
|
pass_height = height;
|
|
# else
|
|
# define pass_height height
|
|
# endif
|
|
|
|
pngtest_debug1("Writing row data for pass %d", pass);
|
|
for (y = 0; y < pass_height; y++)
|
|
{
|
|
#ifndef SINGLE_ROWBUF_ALLOC
|
|
pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
|
|
|
|
row_buf = (png_bytep)png_malloc(read_ptr,
|
|
png_get_rowbytes(read_ptr, read_info_ptr));
|
|
|
|
pngtest_debug2("\t%p (%lu bytes)", row_buf,
|
|
(unsigned long)png_get_rowbytes(read_ptr, read_info_ptr));
|
|
|
|
#endif /* !SINGLE_ROWBUF_ALLOC */
|
|
png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
#ifdef PNGTEST_TIMING
|
|
t_stop = (float)clock();
|
|
t_decode += (t_stop - t_start);
|
|
t_start = t_stop;
|
|
#endif
|
|
png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
|
|
#ifdef PNGTEST_TIMING
|
|
t_stop = (float)clock();
|
|
t_encode += (t_stop - t_start);
|
|
t_start = t_stop;
|
|
#endif
|
|
#endif /* WRITE */
|
|
|
|
#ifndef SINGLE_ROWBUF_ALLOC
|
|
pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);
|
|
png_free(read_ptr, row_buf);
|
|
row_buf = NULL;
|
|
#endif /* !SINGLE_ROWBUF_ALLOC */
|
|
}
|
|
}
|
|
|
|
#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
|
|
# ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
|
|
png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
|
|
# endif
|
|
# ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
|
|
# endif
|
|
#endif
|
|
|
|
pngtest_debug("Reading and writing end_info data");
|
|
|
|
png_read_end(read_ptr, end_info_ptr);
|
|
#ifdef PNG_TEXT_SUPPORTED
|
|
{
|
|
png_textp text_ptr;
|
|
int num_text;
|
|
|
|
if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
|
|
{
|
|
pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
|
|
|
|
pngtest_check_text_support(read_ptr, text_ptr, num_text);
|
|
|
|
if (verbose != 0)
|
|
{
|
|
int i;
|
|
|
|
fprintf(STDERR,"\n");
|
|
for (i=0; i<num_text; i++)
|
|
{
|
|
fprintf(STDERR," Text compression[%d]=%d\n",
|
|
i, text_ptr[i].compression);
|
|
}
|
|
}
|
|
|
|
png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_READ_eXIf_SUPPORTED
|
|
{
|
|
png_bytep exif=NULL;
|
|
png_uint_32 exif_length;
|
|
|
|
if (png_get_eXIf_1(read_ptr, end_info_ptr, &exif_length, &exif) != 0)
|
|
{
|
|
if (exif_length > 1)
|
|
fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1],
|
|
(unsigned long)exif_length);
|
|
# ifdef PNG_WRITE_eXIf_SUPPORTED
|
|
png_set_eXIf_1(write_ptr, write_end_info_ptr, exif_length, exif);
|
|
# endif
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_tIME_SUPPORTED
|
|
{
|
|
png_timep mod_time;
|
|
|
|
if (png_get_tIME(read_ptr, end_info_ptr, &mod_time) != 0)
|
|
{
|
|
png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
|
|
#ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
if (png_convert_to_rfc1123_buffer(tIME_string, mod_time) != 0)
|
|
tIME_string[(sizeof tIME_string) - 1] = '\0';
|
|
|
|
else
|
|
{
|
|
strncpy(tIME_string, "*** invalid time ***", sizeof tIME_string);
|
|
tIME_string[(sizeof tIME_string)-1] = '\0';
|
|
}
|
|
|
|
tIME_chunk_present++;
|
|
#endif /* TIME_RFC1123 */
|
|
}
|
|
}
|
|
#endif
|
|
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
{
|
|
png_unknown_chunkp unknowns;
|
|
int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr,
|
|
&unknowns);
|
|
|
|
if (num_unknowns != 0)
|
|
{
|
|
png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
|
|
num_unknowns);
|
|
#if PNG_LIBPNG_VER < 10600
|
|
/* Copy the locations from the read_info_ptr. The automatically
|
|
* generated locations in write_end_info_ptr are wrong prior to 1.6.0
|
|
* because they are reset from the write pointer (removed in 1.6.0).
|
|
*/
|
|
{
|
|
int i;
|
|
for (i = 0; i < num_unknowns; i++)
|
|
png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
|
|
unknowns[i].location);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
|
|
/* Normally one would use Z_DEFAULT_STRATEGY for text compression.
|
|
* This is here just to make pngtest replicate the results from libpng
|
|
* versions prior to 1.5.4, and to test this new API.
|
|
*/
|
|
png_set_text_compression_strategy(write_ptr, Z_FILTERED);
|
|
#endif
|
|
|
|
/* When the unknown vpAg/sTER chunks are written by pngtest the only way to
|
|
* do it is to write them *before* calling png_write_end. When unknown
|
|
* chunks are written by libpng, however, they are written just before IEND.
|
|
* There seems to be no way round this, however vpAg/sTER are not expected
|
|
* after IDAT.
|
|
*/
|
|
write_chunks(write_ptr, after_IDAT);
|
|
|
|
png_write_end(write_ptr, write_end_info_ptr);
|
|
#endif
|
|
|
|
#ifdef PNG_EASY_ACCESS_SUPPORTED
|
|
if (verbose != 0)
|
|
{
|
|
png_uint_32 iwidth, iheight;
|
|
iwidth = png_get_image_width(write_ptr, write_info_ptr);
|
|
iheight = png_get_image_height(write_ptr, write_info_ptr);
|
|
fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
|
|
(unsigned long)iwidth, (unsigned long)iheight);
|
|
}
|
|
#endif
|
|
|
|
pngtest_debug("Destroying data structs");
|
|
#ifdef SINGLE_ROWBUF_ALLOC
|
|
pngtest_debug("destroying row_buf for read_ptr");
|
|
png_free(read_ptr, row_buf);
|
|
row_buf = NULL;
|
|
#endif /* SINGLE_ROWBUF_ALLOC */
|
|
pngtest_debug("destroying read_ptr, read_info_ptr, end_info_ptr");
|
|
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
pngtest_debug("destroying write_end_info_ptr");
|
|
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
|
|
pngtest_debug("destroying write_ptr, write_info_ptr");
|
|
png_destroy_write_struct(&write_ptr, &write_info_ptr);
|
|
#endif
|
|
pngtest_debug("Destruction complete.");
|
|
|
|
FCLOSE(fpin);
|
|
FCLOSE(fpout);
|
|
|
|
/* Summarize any warnings or errors and in 'strict' mode fail the test.
|
|
* Unsupported chunks can result in warnings, in that case ignore the strict
|
|
* setting, otherwise fail the test on warnings as well as errors.
|
|
*/
|
|
if (error_count > 0)
|
|
{
|
|
/* We don't really expect to get here because of the setjmp handling
|
|
* above, but this is safe.
|
|
*/
|
|
fprintf(STDERR, "\n %s: %d libpng errors found (%d warnings)",
|
|
inname, error_count, warning_count);
|
|
|
|
if (strict != 0)
|
|
return (1);
|
|
}
|
|
|
|
# ifdef PNG_WRITE_SUPPORTED
|
|
/* If there is no write support nothing was written! */
|
|
else if (unsupported_chunks > 0)
|
|
{
|
|
fprintf(STDERR, "\n %s: unsupported chunks (%d)%s",
|
|
inname, unsupported_chunks, strict ? ": IGNORED --strict!" : "");
|
|
}
|
|
# endif
|
|
|
|
else if (warning_count > 0)
|
|
{
|
|
fprintf(STDERR, "\n %s: %d libpng warnings found",
|
|
inname, warning_count);
|
|
|
|
if (strict != 0)
|
|
return (1);
|
|
}
|
|
|
|
pngtest_debug("Opening files for comparison");
|
|
if ((fpin = fopen(inname, "rb")) == NULL)
|
|
{
|
|
fprintf(STDERR, "Could not find file %s\n", inname);
|
|
return (1);
|
|
}
|
|
|
|
if ((fpout = fopen(outname, "rb")) == NULL)
|
|
{
|
|
fprintf(STDERR, "Could not find file %s\n", outname);
|
|
FCLOSE(fpin);
|
|
return (1);
|
|
}
|
|
|
|
#if defined (PNG_WRITE_SUPPORTED) /* else nothing was written */ &&\
|
|
defined (PNG_WRITE_FILTER_SUPPORTED)
|
|
if (interlace_preserved != 0) /* else the files will be changed */
|
|
{
|
|
for (;;)
|
|
{
|
|
static int wrote_question = 0;
|
|
size_t num_in, num_out;
|
|
char inbuf[256], outbuf[256];
|
|
|
|
num_in = fread(inbuf, 1, sizeof inbuf, fpin);
|
|
num_out = fread(outbuf, 1, sizeof outbuf, fpout);
|
|
|
|
if (num_in != num_out)
|
|
{
|
|
fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
|
|
inname, outname);
|
|
|
|
if (wrote_question == 0 && unsupported_chunks == 0)
|
|
{
|
|
fprintf(STDERR,
|
|
" Was %s written with the same maximum IDAT"
|
|
" chunk size (%d bytes),",
|
|
inname, PNG_ZBUF_SIZE);
|
|
fprintf(STDERR,
|
|
"\n filtering heuristic (libpng default), compression");
|
|
fprintf(STDERR,
|
|
" level (zlib default),\n and zlib version (%s)?\n\n",
|
|
ZLIB_VERSION);
|
|
wrote_question = 1;
|
|
}
|
|
|
|
FCLOSE(fpin);
|
|
FCLOSE(fpout);
|
|
|
|
if (strict != 0 && unsupported_chunks == 0)
|
|
return (1);
|
|
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
if (num_in == 0)
|
|
break;
|
|
|
|
if (memcmp(inbuf, outbuf, num_in))
|
|
{
|
|
fprintf(STDERR, "\nFiles %s and %s are different\n", inname,
|
|
outname);
|
|
|
|
if (wrote_question == 0 && unsupported_chunks == 0)
|
|
{
|
|
fprintf(STDERR,
|
|
" Was %s written with the same maximum"
|
|
" IDAT chunk size (%d bytes),",
|
|
inname, PNG_ZBUF_SIZE);
|
|
fprintf(STDERR,
|
|
"\n filtering heuristic (libpng default), compression");
|
|
fprintf(STDERR,
|
|
" level (zlib default),\n and zlib version (%s)?\n\n",
|
|
ZLIB_VERSION);
|
|
wrote_question = 1;
|
|
}
|
|
|
|
FCLOSE(fpin);
|
|
FCLOSE(fpout);
|
|
|
|
/* NOTE: the unsupported_chunks escape is permitted here because
|
|
* unsupported text chunk compression will result in the compression
|
|
* mode being changed (to NONE) yet, in the test case, the result
|
|
* can be exactly the same size!
|
|
*/
|
|
if (strict != 0 && unsupported_chunks == 0)
|
|
return (1);
|
|
|
|
else
|
|
return (0);
|
|
}
|
|
}
|
|
}
|
|
#endif /* WRITE && WRITE_FILTER */
|
|
|
|
FCLOSE(fpin);
|
|
FCLOSE(fpout);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* Input and output filenames */
|
|
#ifdef RISCOS
|
|
static const char *inname = "pngtest/png";
|
|
static const char *outname = "pngout/png";
|
|
#else
|
|
static const char *inname = "pngtest.png";
|
|
static const char *outname = "pngout.png";
|
|
#endif
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int multiple = 0;
|
|
int ierror = 0;
|
|
|
|
png_structp dummy_ptr;
|
|
|
|
fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
|
|
fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
|
|
fprintf(STDERR, "%s", png_get_copyright(NULL));
|
|
/* Show the version of libpng used in building the library */
|
|
fprintf(STDERR, " library (%lu):%s",
|
|
(unsigned long)png_access_version_number(),
|
|
png_get_header_version(NULL));
|
|
|
|
/* Show the version of libpng used in building the application */
|
|
fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
|
|
PNG_HEADER_VERSION_STRING);
|
|
|
|
/* Do some consistency checking on the memory allocation settings, I'm
|
|
* not sure this matters, but it is nice to know, the first of these
|
|
* tests should be impossible because of the way the macros are set
|
|
* in pngconf.h
|
|
*/
|
|
#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
|
|
fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
|
|
#endif
|
|
/* I think the following can happen. */
|
|
#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
|
|
fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
|
|
#endif
|
|
|
|
if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
|
|
{
|
|
fprintf(STDERR,
|
|
"Warning: versions are different between png.h and png.c\n");
|
|
fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
|
|
fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
|
|
++ierror;
|
|
}
|
|
|
|
if (argc > 1)
|
|
{
|
|
if (strcmp(argv[1], "-m") == 0)
|
|
{
|
|
multiple = 1;
|
|
status_dots_requested = 0;
|
|
}
|
|
|
|
else if (strcmp(argv[1], "-mv") == 0 ||
|
|
strcmp(argv[1], "-vm") == 0 )
|
|
{
|
|
multiple = 1;
|
|
verbose = 1;
|
|
status_dots_requested = 1;
|
|
}
|
|
|
|
else if (strcmp(argv[1], "-v") == 0)
|
|
{
|
|
verbose = 1;
|
|
status_dots_requested = 1;
|
|
inname = argv[2];
|
|
}
|
|
|
|
else if (strcmp(argv[1], "--strict") == 0)
|
|
{
|
|
status_dots_requested = 0;
|
|
verbose = 1;
|
|
inname = argv[2];
|
|
strict++;
|
|
relaxed = 0;
|
|
multiple=1;
|
|
}
|
|
|
|
else if (strcmp(argv[1], "--relaxed") == 0)
|
|
{
|
|
status_dots_requested = 0;
|
|
verbose = 1;
|
|
inname = argv[2];
|
|
strict = 0;
|
|
relaxed++;
|
|
multiple=1;
|
|
}
|
|
else if (strcmp(argv[1], "--xfail") == 0)
|
|
{
|
|
status_dots_requested = 0;
|
|
verbose = 1;
|
|
inname = argv[2];
|
|
strict = 0;
|
|
xfail++;
|
|
relaxed++;
|
|
multiple=1;
|
|
}
|
|
|
|
else
|
|
{
|
|
inname = argv[1];
|
|
status_dots_requested = 0;
|
|
}
|
|
}
|
|
|
|
if (multiple == 0 && argc == 3 + verbose)
|
|
outname = argv[2 + verbose];
|
|
|
|
if ((multiple == 0 && argc > 3 + verbose) ||
|
|
(multiple != 0 && argc < 2))
|
|
{
|
|
fprintf(STDERR,
|
|
"usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
|
|
argv[0], argv[0]);
|
|
fprintf(STDERR,
|
|
" reads/writes one PNG file (without -m) or multiple files (-m)\n");
|
|
fprintf(STDERR,
|
|
" with -m %s is used as a temporary file\n", outname);
|
|
exit(1);
|
|
}
|
|
|
|
if (multiple != 0)
|
|
{
|
|
int i;
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
int allocation_now = current_allocation;
|
|
#endif
|
|
for (i=2; i<argc; ++i)
|
|
{
|
|
int kerror;
|
|
fprintf(STDERR, "\n Testing %s:", argv[i]);
|
|
#if PNG_DEBUG > 0
|
|
fprintf(STDERR, "\n");
|
|
#endif
|
|
kerror = test_one_file(argv[i], outname);
|
|
if (kerror == 0)
|
|
{
|
|
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
fprintf(STDERR, "\n PASS (%lu zero samples)\n",
|
|
(unsigned long)zero_samples);
|
|
#else
|
|
fprintf(STDERR, " PASS\n");
|
|
#endif
|
|
#ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
if (tIME_chunk_present != 0)
|
|
fprintf(STDERR, " tIME = %s\n", tIME_string);
|
|
|
|
tIME_chunk_present = 0;
|
|
#endif /* TIME_RFC1123 */
|
|
}
|
|
|
|
else
|
|
{
|
|
if (xfail)
|
|
fprintf(STDERR, " XFAIL\n");
|
|
else
|
|
{
|
|
fprintf(STDERR, " FAIL\n");
|
|
ierror += kerror;
|
|
}
|
|
}
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
if (allocation_now != current_allocation)
|
|
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
|
|
current_allocation - allocation_now);
|
|
|
|
if (current_allocation != 0)
|
|
{
|
|
memory_infop pinfo = pinformation;
|
|
|
|
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
|
|
current_allocation);
|
|
|
|
while (pinfo != NULL)
|
|
{
|
|
fprintf(STDERR, " %lu bytes at %p\n",
|
|
(unsigned long)pinfo->size,
|
|
pinfo->pointer);
|
|
pinfo = pinfo->next;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
fprintf(STDERR, " Current memory allocation: %10d bytes\n",
|
|
current_allocation);
|
|
fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
|
|
maximum_allocation);
|
|
fprintf(STDERR, " Total memory allocation: %10d bytes\n",
|
|
total_allocation);
|
|
fprintf(STDERR, " Number of allocations: %10d\n",
|
|
num_allocations);
|
|
#endif
|
|
}
|
|
|
|
else
|
|
{
|
|
int i;
|
|
for (i = 0; i<3; ++i)
|
|
{
|
|
int kerror;
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
int allocation_now = current_allocation;
|
|
#endif
|
|
if (i == 1)
|
|
status_dots_requested = 1;
|
|
|
|
else if (verbose == 0)
|
|
status_dots_requested = 0;
|
|
|
|
if (i == 0 || verbose == 1 || ierror != 0)
|
|
{
|
|
fprintf(STDERR, "\n Testing %s:", inname);
|
|
#if PNG_DEBUG > 0
|
|
fprintf(STDERR, "\n");
|
|
#endif
|
|
}
|
|
|
|
kerror = test_one_file(inname, outname);
|
|
|
|
if (kerror == 0)
|
|
{
|
|
if (verbose == 1 || i == 2)
|
|
{
|
|
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
fprintf(STDERR, "\n PASS (%lu zero samples)\n",
|
|
(unsigned long)zero_samples);
|
|
#else
|
|
fprintf(STDERR, " PASS\n");
|
|
#endif
|
|
#ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
if (tIME_chunk_present != 0)
|
|
fprintf(STDERR, " tIME = %s\n", tIME_string);
|
|
#endif /* TIME_RFC1123 */
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
if (verbose == 0 && i != 2)
|
|
{
|
|
fprintf(STDERR, "\n Testing %s:", inname);
|
|
#if PNG_DEBUG > 0
|
|
fprintf(STDERR, "\n");
|
|
#endif
|
|
}
|
|
|
|
if (xfail)
|
|
fprintf(STDERR, " XFAIL\n");
|
|
else
|
|
{
|
|
fprintf(STDERR, " FAIL\n");
|
|
ierror += kerror;
|
|
}
|
|
}
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
if (allocation_now != current_allocation)
|
|
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
|
|
current_allocation - allocation_now);
|
|
|
|
if (current_allocation != 0)
|
|
{
|
|
memory_infop pinfo = pinformation;
|
|
|
|
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
|
|
current_allocation);
|
|
|
|
while (pinfo != NULL)
|
|
{
|
|
fprintf(STDERR, " %lu bytes at %p\n",
|
|
(unsigned long)pinfo->size, pinfo->pointer);
|
|
pinfo = pinfo->next;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
fprintf(STDERR, " Current memory allocation: %10d bytes\n",
|
|
current_allocation);
|
|
fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
|
|
maximum_allocation);
|
|
fprintf(STDERR, " Total memory allocation: %10d bytes\n",
|
|
total_allocation);
|
|
fprintf(STDERR, " Number of allocations: %10d\n",
|
|
num_allocations);
|
|
#endif
|
|
}
|
|
|
|
#ifdef PNGTEST_TIMING
|
|
t_stop = (float)clock();
|
|
t_misc += (t_stop - t_start);
|
|
t_start = t_stop;
|
|
fprintf(STDERR, " CPU time used = %.3f seconds",
|
|
(t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
|
|
fprintf(STDERR, " (decoding %.3f,\n",
|
|
t_decode/(float)CLOCKS_PER_SEC);
|
|
fprintf(STDERR, " encoding %.3f ,",
|
|
t_encode/(float)CLOCKS_PER_SEC);
|
|
fprintf(STDERR, " other %.3f seconds)\n\n",
|
|
t_misc/(float)CLOCKS_PER_SEC);
|
|
#endif
|
|
|
|
if (ierror == 0)
|
|
fprintf(STDERR, " libpng passes test\n");
|
|
|
|
else
|
|
fprintf(STDERR, " libpng FAILS test\n");
|
|
|
|
dummy_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
fprintf(STDERR, " Default limits:\n");
|
|
fprintf(STDERR, " width_max = %lu\n",
|
|
(unsigned long) png_get_user_width_max(dummy_ptr));
|
|
fprintf(STDERR, " height_max = %lu\n",
|
|
(unsigned long) png_get_user_height_max(dummy_ptr));
|
|
if (png_get_chunk_cache_max(dummy_ptr) == 0)
|
|
fprintf(STDERR, " cache_max = unlimited\n");
|
|
else
|
|
fprintf(STDERR, " cache_max = %lu\n",
|
|
(unsigned long) png_get_chunk_cache_max(dummy_ptr));
|
|
if (png_get_chunk_malloc_max(dummy_ptr) == 0)
|
|
fprintf(STDERR, " malloc_max = unlimited\n");
|
|
else
|
|
fprintf(STDERR, " malloc_max = %lu\n",
|
|
(unsigned long) png_get_chunk_malloc_max(dummy_ptr));
|
|
png_destroy_read_struct(&dummy_ptr, NULL, NULL);
|
|
|
|
return (int)(ierror != 0);
|
|
}
|
|
#else
|
|
int
|
|
main(void)
|
|
{
|
|
fprintf(STDERR,
|
|
" test ignored because libpng was not built with read support\n");
|
|
/* And skip this test */
|
|
return PNG_LIBPNG_VER < 10600 ? 0 : 77;
|
|
}
|
|
#endif
|
|
|
|
/* Generate a compiler error if there is an old png.h in the search path. */
|
|
typedef png_libpng_version_1_6_37 Your_png_h_is_not_version_1_6_37;
|