Mercurial > hg > dmlib
view tools/libgfx.h @ 1759:027fb7313d85
Add a format flag for marking formats that have broken/incomplete support and use it.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Mon, 11 Jun 2018 18:09:00 +0300 |
parents | 59c2b08a80a6 |
children | 0562dd55a1f6 |
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/* * Functions for loading and saving bitmap images * Programmed and designed by Matti 'ccr' Hamalainen * (C) Copyright 2012 Tecnic Software productions (TNSP) * * Please read file 'COPYING' for information on license and distribution. */ #ifndef LIBMGFX_H #define LIBMGFX_H 1 #include "dmlib.h" #include "dmres.h" #ifdef __cplusplus extern "C" { #endif enum { DM_IMGFMT_PNG, DM_IMGFMT_PPM, DM_IMGFMT_PCX, DM_IMGFMT_ILBM, DM_IMGFMT_RAW, DM_IMGFMT_ARAW, }; enum { DM_IFMT_PALETTE, DM_IFMT_RGB, DM_IFMT_RGBA, }; // Error handling modes enum { DM_ERRMODE_FAIL = 0, DM_ERRMODE_RECOV_1, DM_ERRMODE_RECOV_2, }; // Probe scores enum { DM_PROBE_SCORE_FALSE = 0, DM_PROBE_SCORE_MAYBE = 250, DM_PROBE_SCORE_AVG = 500, DM_PROBE_SCORE_GOOD = 750, DM_PROBE_SCORE_MAX = 1000, }; // Flags for readability/writeability of formats enum { DM_FMT_WR = 0x0001, // Format can be written DM_FMT_RD = 0x0002, // Format can be read DM_FMT_RDWR = (DM_FMT_RD | DM_FMT_WR), // Read and write support DM_FMT_BROKEN = 0x1000, // Support is broken/incomplete }; // Bitmapped image struct typedef struct { int format; // one of types specified by DM_IFMT_* int width, height; int pitch; // bytes per scanline int bpp; // bits per pixel float aspect; // aspect ratio (vert / horiz), <= 0 if not set int ncolors; // number of colors in palette, if any int ctransp; // transparency color index BOOL constpal; // is the palette a const? DMColor *pal; // pointer to palette struct, NULL if no palette size_t size; Uint8 *data; } DMImage; typedef struct { int format; int scaleX, scaleY; int nplanes, bpp; BOOL planar, paletted; } DMImageConvSpec; typedef struct { char *fext; char *name; int fmtid; // DM_IMGFMT_* int flags; // DM_FMT_* flags int (*probe)(const Uint8 *buf, const size_t len); int (*read)(const char *filename, DMImage **pimg); int (*readFILE)(DMResource *fp, DMImage **pimg); int (*write)(const char *filename, const DMImage *pimg, const DMImageConvSpec *spec); int (*writeFILE)(DMResource *fp, const DMImage *pimg, const DMImageConvSpec *spec); } DMImageFormat; extern const DMImageFormat dmImageFormatList[]; extern const int ndmImageFormatList; extern int dmGFXErrorMode; DMImage * dmImageAlloc(const int width, const int height, const int format, const int bpp); void dmImageFree(DMImage *img); int dmImageGetBytesPerPixel(const int format); int dmImageProbeGeneric(const Uint8 *buf, const size_t len, const DMImageFormat **fmt, int *index); BOOL dmCompareColor(const DMColor *c1, const DMColor *c2, BOOL alpha); BOOL dmPaletteAlloc(DMColor **ppal, int ncolors, int ctransp); BOOL dmImagePaletteAlloc(DMImage *img, int ncolors, int ctransp); int dmWriteImageData(const DMImage *img, void *cbdata, int (*writeRowCB)(void *, const Uint8 *, const size_t), const DMImageConvSpec *spec); int dmWriteRAWImageFILE(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec); int dmWriteRAWImage(const char *filename, const DMImage *img, const DMImageConvSpec *spec); int dmWritePPMImageFILE(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec); int dmWritePPMImage(const char *filename, const DMImage *img, const DMImageConvSpec *spec); #ifdef DM_USE_LIBPNG int dmWritePNGImageFILE(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec); int dmWritePNGImage(const char *filename, const DMImage *img, const DMImageConvSpec *spec); #endif int dmReadILBMImageFILE(DMResource *fp, DMImage **pimg); int dmReadILBMImage(const char *filename, DMImage **pimg); int dmWritePCXImageFILE(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec); int dmWritePCXImage(const char *filename, const DMImage *img, const DMImageConvSpec *spec); int dmReadPCXImageFILE(DMResource *fp, DMImage **pimg); int dmReadPCXImage(const char *filename, DMImage **pimg); typedef struct _DMBitStreamContext { void *handle; BOOL (*putByte)(struct _DMBitStreamContext *ctx, Uint8 val); int outBuf, outBitCount, outByteCount; } DMBitStreamContext; void dmInitBitStreamContext(DMBitStreamContext *ctx); int dmFlushBitStream(DMBitStreamContext *ctx); BOOL dmPutBits(DMBitStreamContext *ctx, const int val, const int n); int dmInitBitStreamFILE(DMBitStreamContext *ctx, DMResource *fp); #ifdef __cplusplus } #endif #endif // LIBMGFX_H