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forgot pngu_impl.h

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Christopher Roy Bratusek 2012-03-22 20:37:54 +01:00
parent a024b3c93f
commit 9533956a4c
1 changed files with 42 additions and 0 deletions
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source/pngu_impl.h Normal file
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#ifndef __PNGU_I__
#define __PNGU_I__
#include "png.h"
// Constants
#define PNGU_SOURCE_BUFFER 1
#define PNGU_SOURCE_DEVICE 2
// Prototypes of helper functions
int pngu_info (IMGCTX ctx);
int pngu_decode (IMGCTX ctx, PNGU_u32 width, PNGU_u32 height, PNGU_u32 stripAlpha);
int pngu_decode_add_alpha (IMGCTX ctx, PNGU_u32 width, PNGU_u32 height, PNGU_u32 stripAlpha, int force32bit);
void pngu_free_info (IMGCTX ctx);
void pngu_read_data_from_buffer (png_structp png_ptr, png_bytep data, png_size_t length);
void pngu_write_data_to_buffer (png_structp png_ptr, png_bytep data, png_size_t length);
void pngu_flush_data_to_buffer (png_structp png_ptr);
int pngu_clamp (int value, int min, int max);
// PNGU Image context struct
struct _IMGCTX
{
int source;
void *buffer;
char *filename;
PNGU_u32 cursor;
PNGU_u32 buf_size; // buffer size
PNGU_u32 propRead;
PNGUPROP prop;
PNGU_u32 infoRead;
png_structp png_ptr;
png_infop info_ptr;
FILE *fd;
png_bytep *row_pointers;
png_bytep img_data;
};
#endif