Mercurial > hg > dmlib
annotate tools/lib64gfx.h @ 1373:fc5ee5b4b0e9
Improve handling of extra data.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Sun, 24 Sep 2017 15:22:12 +0300 |
parents | 60d7240e1a63 |
children | 9edb17aa4a0a |
rev | line source |
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1 /* |
418 | 2 * Functions for reading and converting various restricted |
3 * C64/etc and/or indexed/paletted graphics formats. | |
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4 * Programmed and designed by Matti 'ccr' Hamalainen |
920 | 5 * (C) Copyright 2012-2015 Tecnic Software productions (TNSP) |
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6 * |
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7 * Please read file 'COPYING' for information on license and distribution. |
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8 */ |
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9 #ifndef LIB64GFX_H |
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10 #define LIB64GFX_H 1 |
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11 |
435 | 12 #include "libgfx.h" |
13 | |
14 #ifdef __cplusplus | |
15 extern "C" { | |
16 #endif | |
17 | |
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18 |
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19 // Bitmap constants |
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20 #define C64_SCR_WIDTH 320 |
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21 #define C64_SCR_HEIGHT 200 |
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22 #define C64_SCR_CH_WIDTH (C64_SCR_WIDTH/8) |
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23 #define C64_SCR_CH_HEIGHT (C64_SCR_HEIGHT/8) |
926 | 24 #define C64_SCR_COLOR_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT) |
25 #define C64_SCR_SCREEN_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT) | |
923 | 26 #define C64_SCR_BITMAP_SIZE ((C64_SCR_WIDTH * C64_SCR_HEIGHT)/8) |
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27 #define C64_SCR_MAX_BANK 8 |
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28 #define C64_MAX_EXTRA_DATA 64 |
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29 |
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30 // C64 video screen pixel aspect ratio on PAL |
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31 #define C64_SCR_PAR_XY (0.9365f) |
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32 |
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33 // Sprite constants |
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34 #define C64_SPR_WIDTH 3 // bytes |
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35 #define C64_SPR_HEIGHT 21 // lines |
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36 #define C64_SPR_WIDTH_PX (8 * C64_SPR_WIDTH) |
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37 #define C64_SPR_SIZE ((C64_SPR_WIDTH * C64_SPR_HEIGHT) + 1) |
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38 |
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39 // Character constants |
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40 #define C64_CHR_WIDTH 1 // bytes |
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41 #define C64_CHR_HEIGHT 8 // lines |
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42 #define C64_CHR_WIDTH_PX (8 * C64_CHR_WIDTH) |
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43 #define C64_CHR_SIZE (C64_CHR_WIDTH * C64_CHR_HEIGHT) |
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44 |
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45 // Etc. |
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46 #define C64_RAM_SIZE (64*1024) |
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47 #define C64_NCOLORS 16 |
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48 #define C64_MAX_COLORS 16 |
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49 #define C64_VIDBANK_SIZE (16*1024) |
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50 #define C64_MAX_SPRITES (C64_VIDBANK_SIZE / C64_SPR_SIZE) |
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51 #define C64_MAX_CHARS 256 |
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52 |
922 | 53 |
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54 // Different supported C64 bitmap "modes" |
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55 enum |
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56 { |
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57 D64_FMT_HIRES = 0x0000, |
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58 D64_FMT_MC = 0x0001, |
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59 D64_FMT_ILACE = 0x0002, |
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60 D64_FMT_FLI = 0x0004, |
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61 D64_FMT_CHAR = 0x0008, |
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62 |
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63 D64_FMT_MODE_MASK = 0x000f, |
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64 |
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65 }; |
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66 |
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67 // Number of video banks |
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68 enum |
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69 { |
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70 D64_FLI_2BANK, |
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71 D64_FLI_4BANK, |
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72 D64_FLI_8BANK, |
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73 }; |
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74 |
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75 enum |
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76 { |
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77 D64_ILACE_COLOR, |
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78 D64_ILACE_RES, |
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79 }; |
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80 |
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81 |
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82 // Charmode screen memory configuration |
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83 enum |
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84 { |
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85 D64_CHCFG_SCREEN, // Use screen memory |
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86 D64_CHCFG_LINEAR = 1, // Generate linear pattern so that first line |
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87 // of chars is 0-39, second 40-79, up to 255. |
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88 }; |
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89 |
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90 |
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91 typedef struct |
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92 { |
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93 BOOL multicolor, xexpand, yexpand; |
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94 int color, xc, yc; |
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95 Uint8 data[C64_SPR_HEIGHT][C64_SPR_WIDTH]; |
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96 } DMC64Sprite; |
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97 |
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98 |
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99 enum |
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100 { |
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101 DC_D020, |
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102 DC_BGCOL, |
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103 DC_D021, |
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104 DC_D022, |
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105 DC_D023, |
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106 DC_D024, |
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107 }; |
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108 |
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109 |
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110 typedef struct |
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111 { |
922 | 112 int type, // Image type (D64_FMT_*) |
113 fliType, // FLI type (if FLI used) | |
114 laceType, // Interlace type (D64_ILACE_*) | |
115 laceBank1, // Interlace video bank indices | |
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116 laceBank2; |
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117 |
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118 int width, height; // Width and height in pixels |
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119 int ch_width, ch_height; // Width and height in charblocks |
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120 |
915 | 121 Uint8 |
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122 *color[C64_SCR_MAX_BANK], |
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123 *bitmap[C64_SCR_MAX_BANK], |
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124 *screen[C64_SCR_MAX_BANK], |
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125 *charmem[C64_SCR_MAX_BANK], |
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126 *extraData[C64_MAX_EXTRA_DATA], |
915 | 127 d020, bgcolor, d022, d023, d024; |
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128 |
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129 size_t extraDataSizes[C64_MAX_EXTRA_DATA]; |
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130 DMC64Sprite sprites[C64_MAX_SPRITES]; |
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131 } DMC64Image; |
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132 |
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133 |
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134 enum |
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135 { |
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136 DT_COLOR_RAM, |
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137 DT_BITMAP, |
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138 DT_SCREEN_RAM, |
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139 DT_COLOR_REG, |
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140 DT_COLOR_SET, |
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141 DT_EXTRA_DATA, |
916 | 142 |
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143 DT_DEC_FUNCTION, |
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144 DT_ENC_FUNCTION, |
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145 |
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146 DT_CHAR_DATA, |
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147 DT_CHAR_CONFIG, |
925 | 148 |
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149 DT_LAST, |
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150 }; |
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151 |
937 | 152 #define D64_MAX_ENCDEC_OPS 16 |
153 | |
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154 |
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155 typedef struct _DMC64EncDecOp |
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156 { |
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157 int type; |
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158 size_t offs; |
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159 int bank; |
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160 size_t size; |
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161 BOOL (*decfunction)(DMC64Image *img, const struct _DMC64EncDecOp *op, const Uint8 *buf, const size_t len); |
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162 BOOL (*encfunction)(const struct _DMC64EncDecOp *op, Uint8 **buf, size_t *len, const DMC64Image *img); |
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163 } DMC64EncDecOp; |
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164 |
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165 |
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166 typedef struct _DMC64ImageFormat |
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167 { |
922 | 168 int type; // Type flags, see D64_FMT_* |
169 char *fext; // Filename extension | |
170 char *name; // Format description/name | |
171 | |
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172 size_t addr; // Loading address (0 if no loading address) |
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173 size_t size; // Size, including loading address. Only used in encoding, if even there (0 if no static size) |
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174 |
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175 int width, height; // Width and height in pixels |
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176 int ch_width, ch_height; // Width and height in charblocks |
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177 |
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178 int (*probe)(const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt); |
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179 int (*decode)(DMC64Image *img, const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt); |
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180 int (*encode)(DMC64Image *img, Uint8 **buf, size_t *len, const struct _DMC64ImageFormat *fmt); |
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181 int (*convertFrom)(DMImage *, const DMC64Image *); |
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182 int (*convertTo)(DMImage *, DMC64Image *); |
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183 |
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184 DMC64EncDecOp encdecOps[D64_MAX_ENCDEC_OPS]; |
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185 } DMC64ImageFormat; |
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186 |
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187 |
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188 extern DMColor dmC64Palette[C64_NCOLORS]; |
516 | 189 extern const DMC64ImageFormat dmC64ImageFormats[]; |
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190 extern const int ndmC64ImageFormats; |
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191 |
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192 |
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193 DMC64Image *dmC64ImageAlloc(int width, int height, int ch_width, int ch_height); |
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194 void dmC64ImageFree(DMC64Image *img); |
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195 |
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196 |
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197 char * dmC64GetImageTypeString(char *buf, const size_t len, const int type); |
827 | 198 int dmC64ConvertCSDataToImage(DMImage *img, int xoffs, int yoffs, const Uint8 *inBuf, int width, int height, BOOL multicolor, int *colors); |
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199 |
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200 int dmC64DecodeGenericBMP(DMC64Image *img, const Uint8 *buf, const size_t len, const DMC64ImageFormat *fmt); |
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201 int dmC64EncodeGenericBMP(Uint8 **pbuf, size_t *plen, const DMC64Image *img, const DMC64ImageFormat *fmt); |
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202 int dmC64ConvertGenericBMP2Image(DMImage *dst, const DMC64Image *src); |
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203 |
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204 int dmC64ConvertBMP2Image(DMImage **pdst, const DMC64Image *src, const DMC64ImageFormat *fmt); |
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205 int dmC64ProbeBMP(const Uint8 *buf, const size_t len, const DMC64ImageFormat **fmt); |
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206 int dmC64DecodeBMP(DMC64Image **img, const Uint8 *buf, const size_t len, const size_t probeOffs, const size_t loadOffs, const DMC64ImageFormat **fmt, const DMC64ImageFormat *forced); |
419
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207 |
435 | 208 |
209 #ifdef __cplusplus | |
210 } | |
211 #endif | |
212 | |
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213 #endif // LIB64GFX_H |