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comparison tools/libgfx.h @ 2207:1ea48084055e

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Add functionality for separate palette file handling, reading, writing and probing similarly to image formats. For now, we only support ".ACT" palettes.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 14 Jun 2019 03:28:46 +0300
parents 455a3849b8ac
children 7a0af15fbe97
comparison
equal deleted inserted replaced
2206:7694b5c8edc1 2207:1ea48084055e
15 #ifdef __cplusplus 15 #ifdef __cplusplus
16 extern "C" { 16 extern "C" {
17 #endif 17 #endif
18 18
19 19
20 // Image formats
20 enum 21 enum
21 { 22 {
22 DM_IMGFMT_PNG, 23 DM_IMGFMT_PNG,
23 DM_IMGFMT_PPM, 24 DM_IMGFMT_PPM,
24 DM_IMGFMT_PCX, 25 DM_IMGFMT_PCX,
29 DM_IMGFMT_ARAW, 30 DM_IMGFMT_ARAW,
30 DM_IMGFMT_CDUMP, 31 DM_IMGFMT_CDUMP,
31 }; 32 };
32 33
33 34
35 // Palette formats
36 enum
37 {
38 DM_PALFMT_ACT,
39 };
40
41
34 // Color formats (these can be used along with DM_FMT_*) 42 // Color formats (these can be used along with DM_FMT_*)
35 enum 43 enum
36 { 44 {
37 DM_PIXFMT_PALETTE = 0x0010, 45 DM_PIXFMT_PALETTE = 0x0010,
38 DM_PIXFMT_GRAYSCALE = 0x0020, 46 DM_PIXFMT_GRAYSCALE = 0x0020,
122 int (*read)(DMResource *fp, DMImage **pimg); 130 int (*read)(DMResource *fp, DMImage **pimg);
123 int (*write)(DMResource *fp, const DMImage *pimg, const DMImageWriteSpec *spec); 131 int (*write)(DMResource *fp, const DMImage *pimg, const DMImageWriteSpec *spec);
124 } DMImageFormat; 132 } DMImageFormat;
125 133
126 134
135 typedef struct
136 {
137 char *fext; // Typical filename extension
138 char *name; // Format name / description
139 int fmtid; // DM_PALFMT_*
140 int flags; // DM_FMT_*
141
142 int (*probe)(const Uint8 *buf, const size_t len);
143 int (*read)(DMResource *fp, DMPalette **ppal);
144 int (*write)(DMResource *fp, const DMPalette *ppal);
145 } DMPaletteFormat;
146
147
127 extern const DMImageFormat dmImageFormatList[]; 148 extern const DMImageFormat dmImageFormatList[];
128 extern const int ndmImageFormatList; 149 extern const int ndmImageFormatList;
150 extern const DMPaletteFormat dmPaletteFormatList[];
151 extern const int ndmPaletteFormatList;
129 extern int dmGFXErrorMode; 152 extern int dmGFXErrorMode;
130 153
131 154
132 DMImage * dmImageAlloc(const int width, const int height, const int format, const int bpp); 155 DMImage * dmImageAlloc(const int width, const int height, const int format, const int bpp);
133 void dmImageFree(DMImage *img); 156 void dmImageFree(DMImage *img);
134 int dmImageGetBytesPerPixel(const int format); 157 int dmImageGetBytesPerPixel(const int format);
135 int dmImageGetBitsPerPixel(const int format); 158 int dmImageGetBitsPerPixel(const int format);
136 int dmImageProbeGeneric(const Uint8 *buf, const size_t len, const DMImageFormat **fmt, int *index); 159 int dmImageProbeGeneric(const Uint8 *buf, const size_t len, const DMImageFormat **fmt, int *index);
137 int dmGetNPlanesFromNColors(const int ncolors); 160 int dmGetNPlanesFromNColors(const int ncolors);
138 161
139 BOOL dmCompareColor(const DMColor *c1, const DMColor *c2, const BOOL alpha); 162 BOOL dmCompareColor(const DMColor *c1, const DMColor *c2, const BOOL alpha);
140 int dmPaletteAlloc(DMPalette **ppal, const int ncolors, const int ctransp); 163 int dmPaletteAlloc(DMPalette **ppal, const int ncolors, const int ctransp);
141 int dmPaletteResize(DMPalette **ppal, const int ncolors); 164 int dmPaletteResize(DMPalette **ppal, const int ncolors);
142 void dmPaletteFree(DMPalette *pal); 165 void dmPaletteFree(DMPalette *pal);
143 int dmPaletteCopy(DMPalette **pdst, const DMPalette *src); 166 int dmPaletteCopy(DMPalette **pdst, const DMPalette *src);
167 int dmPaletteProbeGeneric(const Uint8 *buf, const size_t len, const DMPaletteFormat **fmt, int *index);
168
169
170 int dmReadACTPalette(DMResource *fp, DMPalette **pdst);
171 int dmWriteACTPalette(DMResource *fp, const DMPalette *pdst);
144 172
145 173
146 int dmWriteImageData(const DMImage *img, void *cbdata, 174 int dmWriteImageData(const DMImage *img, void *cbdata,
147 int (*writeRowCB)(void *, const Uint8 *, const size_t), const DMImageWriteSpec *spec); 175 int (*writeRowCB)(void *, const Uint8 *, const size_t), const DMImageWriteSpec *spec);
148 176