mirror of
https://github.com/UberGames/MD3View.git
synced 2024-11-09 23:01:57 +00:00
67 lines
No EOL
1.6 KiB
C
Executable file
67 lines
No EOL
1.6 KiB
C
Executable file
// Known chunk types
|
|
|
|
#define PNG_IHDR 'IHDR'
|
|
#define PNG_IDAT 'IDAT'
|
|
#define PNG_IEND 'IEND'
|
|
#define PNG_tEXt 'tEXt'
|
|
|
|
#define PNG_PLTE 'PLTE'
|
|
#define PNG_bKGD 'bKGD'
|
|
#define PNG_cHRM 'cHRM'
|
|
#define PNG_gAMA 'gAMA'
|
|
#define PNG_hIST 'hIST'
|
|
#define PNG_iCCP 'iCCP'
|
|
#define PNG_iTXt 'iTXt'
|
|
#define PNG_oFFs 'oFFs'
|
|
#define PNG_pCAL 'pCAL'
|
|
#define PNG_sCAL 'sCAL'
|
|
#define PNG_pHYs 'pHYs'
|
|
#define PNG_sBIT 'sBIT'
|
|
#define PNG_sPLT 'sPLT'
|
|
#define PNG_sRGB 'sRGB'
|
|
#define PNG_tIME 'tIME'
|
|
#define PNG_tRNS 'tRNS'
|
|
#define PNG_zTXt 'zTXt'
|
|
|
|
// Filter values
|
|
|
|
#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_NUM 5
|
|
|
|
// Common defines and typedefs
|
|
|
|
typedef unsigned char byte;
|
|
typedef unsigned short word;
|
|
typedef unsigned long ulong;
|
|
|
|
#pragma pack(push)
|
|
#pragma pack(1)
|
|
|
|
typedef struct png_ihdr_s
|
|
{
|
|
ulong width;
|
|
ulong height;
|
|
byte bitdepth; // Bits per sample (not per pixel)
|
|
byte colortype; // bit 0 - palette; bit 1 - RGB; bit 2 - alpha channel
|
|
byte compression; // 0 for zip - error otherwise
|
|
byte filter; // 0 for adaptive with the 5 basic types - error otherwise
|
|
byte interlace; // 0 for no interlace - 1 for Adam7 interlace
|
|
} png_ihdr_t;
|
|
|
|
#pragma pack(pop)
|
|
|
|
typedef struct png_image_s
|
|
{
|
|
byte *data;
|
|
ulong width;
|
|
ulong height;
|
|
ulong bytedepth;
|
|
} png_image_t;
|
|
|
|
bool LoadPNG32 (const char *name, byte **pixels, int *width, int *height, int *bytedepth);
|
|
|
|
// end
|