Mercurial > hg > dmlib
annotate tools/libgfx.h @ 1609:c29adf5ce240
Convert libgfx file format routines to use DMResource instead of stdio FILE.
Also do necessary changes in gfxconv due to these API changes.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Mon, 14 May 2018 12:42:24 +0300 |
| parents | 3b613fcbf3ff |
| children | 36d073c45327 |
| rev | line source |
|---|---|
| 435 | 1 /* |
| 2 * Functions for loading and saving bitmap images | |
| 3 * Programmed and designed by Matti 'ccr' Hamalainen | |
| 4 * (C) Copyright 2012 Tecnic Software productions (TNSP) | |
| 5 * | |
| 6 * Please read file 'COPYING' for information on license and distribution. | |
| 7 */ | |
| 8 #ifndef LIBMGFX_H | |
| 9 #define LIBMGFX_H 1 | |
| 10 | |
| 11 #include "dmlib.h" | |
|
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12 #include "dmres.h" |
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13 |
| 435 | 14 |
| 15 #ifdef __cplusplus | |
| 16 extern "C" { | |
| 17 #endif | |
| 18 | |
| 19 | |
| 20 enum | |
| 21 { | |
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22 DM_IMGFMT_PNG, |
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23 DM_IMGFMT_PPM, |
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24 DM_IMGFMT_PCX, |
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25 DM_IMGFMT_ILBM, |
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26 DM_IMGFMT_RAW, |
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27 DM_IMGFMT_ARAW, |
| 435 | 28 |
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29 DM_IMGFMT_LAST |
| 435 | 30 }; |
| 31 | |
| 32 | |
| 33 enum | |
| 34 { | |
| 35 DM_IFMT_PALETTE, | |
| 36 DM_IFMT_RGB, | |
| 37 DM_IFMT_RGBA, | |
| 38 }; | |
| 39 | |
| 40 | |
| 1544 | 41 // Error handling modes |
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42 enum |
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43 { |
| 1544 | 44 DM_ERRMODE_FAIL = 0, |
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45 DM_ERRMODE_RECOV_1, |
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46 DM_ERRMODE_RECOV_2, |
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47 }; |
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48 |
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49 |
| 1544 | 50 // Probe scores |
| 51 enum | |
| 52 { | |
| 53 DM_PROBE_SCORE_FALSE = 0, | |
| 54 DM_PROBE_SCORE_MAYBE = 250, | |
| 55 DM_PROBE_SCORE_AVG = 500, | |
| 56 DM_PROBE_SCORE_GOOD = 750, | |
| 57 DM_PROBE_SCORE_MAX = 1000, | |
| 58 }; | |
| 59 | |
| 60 | |
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Improve how format read/write capabilities are marked and shown.
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61 // Flags for readability/writeability of formats |
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62 enum |
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63 { |
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64 DM_FMT_WR = 0x0001, |
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65 DM_FMT_RD = 0x0002, |
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66 DM_FMT_RDWR = (DM_FMT_RD | DM_FMT_WR), |
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67 }; |
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68 |
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69 |
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70 // Bitmapped image struct |
| 435 | 71 typedef struct |
| 72 { | |
| 1286 | 73 int format; // one of types specified by DM_IFMT_* |
| 74 int width, height; | |
| 75 int pitch; // bytes per scanline | |
| 76 int bpp; // bits per pixel | |
| 77 | |
| 78 int ncolors; // number of colors in palette, if any | |
| 79 int ctransp; // transparency color index | |
| 80 BOOL constpal; // is the palette a const? | |
| 81 DMColor *pal; // pointer to palette struct, NULL if no palette | |
| 82 | |
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Add size field for allocated data size in DMImage.
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83 size_t size; |
| 435 | 84 Uint8 *data; |
| 85 } DMImage; | |
| 86 | |
| 87 | |
| 88 typedef struct | |
| 89 { | |
| 1288 | 90 int format; |
| 91 int scaleX, scaleY; | |
| 92 int nplanes, bpp; | |
| 1291 | 93 BOOL planar, paletted; |
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94 } DMImageConvSpec; |
| 435 | 95 |
| 96 | |
| 97 typedef struct | |
| 98 { | |
| 99 char *fext; | |
| 100 char *desc; | |
| 101 int (*probe)(const Uint8 *buf, const size_t len); | |
| 102 int (*read)(const char *filename, DMImage **pimg); | |
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103 int (*readFILE)(DMResource *fp, DMImage **pimg); |
| 1341 | 104 int (*write)(const char *filename, const DMImage *pimg, const DMImageConvSpec *spec); |
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105 int (*writeFILE)(DMResource *fp, const DMImage *pimg, const DMImageConvSpec *spec); |
| 435 | 106 } DMImageFormat; |
| 107 | |
| 108 | |
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109 extern DMImageFormat dmImageFormatList[DM_IMGFMT_LAST]; |
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110 extern int dmGFXErrorMode; |
| 435 | 111 |
| 112 | |
| 1286 | 113 DMImage * dmImageAlloc(const int width, const int height, const int format, const int bpp); |
| 435 | 114 void dmImageFree(DMImage *img); |
| 1286 | 115 int dmImageGetBytesPerPixel(const int format); |
| 435 | 116 int dmImageProbeGeneric(const Uint8 *buf, const size_t len, DMImageFormat **fmt, int *index); |
| 117 | |
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118 BOOL dmCompareColor(const DMColor *c1, const DMColor *c2, BOOL alpha); |
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119 |
| 435 | 120 |
| 1341 | 121 int dmWriteImageData(const DMImage *img, void *cbdata, int (*writeRowCB)(void *, const Uint8 *, const size_t), const DMImageConvSpec *spec); |
| 435 | 122 |
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123 int dmWriteRAWImageFILE(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec); |
| 1341 | 124 int dmWriteRAWImage(const char *filename, const DMImage *img, const DMImageConvSpec *spec); |
| 435 | 125 |
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126 int dmWritePPMImageFILE(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec); |
| 1341 | 127 int dmWritePPMImage(const char *filename, const DMImage *img, const DMImageConvSpec *spec); |
| 435 | 128 |
| 129 #ifdef DM_USE_LIBPNG | |
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130 int dmWritePNGImageFILE(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec); |
| 1341 | 131 int dmWritePNGImage(const char *filename, const DMImage *img, const DMImageConvSpec *spec); |
| 435 | 132 #endif |
| 133 | |
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134 int dmReadILBMImageFILE(DMResource *fp, DMImage **pimg); |
| 1341 | 135 int dmReadILBMImage(const char *filename, DMImage **pimg); |
| 136 | |
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137 int dmWritePCXImageFILE(DMResource *fp, const DMImage *img, const DMImageConvSpec *spec); |
| 1341 | 138 int dmWritePCXImage(const char *filename, const DMImage *img, const DMImageConvSpec *spec); |
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139 int dmReadPCXImageFILE(DMResource *fp, DMImage **pimg); |
| 435 | 140 int dmReadPCXImage(const char *filename, DMImage **pimg); |
| 141 | |
| 142 | |
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143 typedef struct _DMBitStreamContext |
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144 { |
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145 void *handle; |
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146 |
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147 BOOL (*putByte)(struct _DMBitStreamContext *ctx, Uint8 val); |
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148 |
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149 int outBuf, outBitCount, outByteCount; |
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150 } DMBitStreamContext; |
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151 |
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152 |
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153 void dmInitBitStreamContext(DMBitStreamContext *ctx); |
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154 int dmFlushBitStream(DMBitStreamContext *ctx); |
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155 BOOL dmPutBits(DMBitStreamContext *ctx, const int val, const int n); |
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156 int dmInitBitStreamFILE(DMBitStreamContext *ctx, DMResource *fp); |
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157 |
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158 |
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159 |
| 435 | 160 #ifdef __cplusplus |
| 161 } | |
| 162 #endif | |
| 163 | |
| 164 #endif // LIBMGFX_H |