Mercurial > hg > dmlib
annotate lib64gfx.h @ 407:59244a7ae37f
Move c64 utilities to the engine lib, as we benefit from a common framework.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Sat, 03 Nov 2012 02:19:51 +0200 |
parents | |
children | e4b2f689aff6 |
rev | line source |
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407
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Move c64 utilities to the engine lib, as we benefit from a common framework.
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1 /* |
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2 * Functions for reading and manipulating some C64/etc graphics formats |
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3 * Programmed and designed by Matti 'ccr' Hamalainen |
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4 * (C) Copyright 2012 Tecnic Software productions (TNSP) |
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5 * |
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6 * Please read file 'COPYING' for information on license and distribution. |
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7 */ |
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8 #ifndef LIB64GFX_H |
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9 #define LIB64GFX_H 1 |
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10 |
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11 #include "dmlib.h" |
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12 |
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13 // Bitmap constants |
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14 #define C64_SCR_WIDTH 320 |
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15 #define C64_SCR_HEIGHT 200 |
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16 #define C64_SCR_CH_WIDTH (C64_SCR_WIDTH/8) |
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17 #define C64_SCR_CH_HEIGHT (C64_SCR_HEIGHT/8) |
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18 #define C64_SCR_COLOR_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT) |
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19 #define C64_SCR_SCREEN_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT) |
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20 #define C64_SCR_BITMAP_SIZE (C64_SCR_WIDTH * C64_SCR_HEIGHT/8) |
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21 #define C64_SCR_EXTRADATA 1024 |
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22 #define C64_SCR_MAX_BANK 8 |
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23 |
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24 // C64 video screen pixel aspect ratio on PAL |
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25 #define C64_SCR_PAR_XY (0.9365f) |
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26 |
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27 // Sprite constants |
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28 #define C64_SPR_WIDTH 3 // bytes |
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29 #define C64_SPR_HEIGHT 21 // lines |
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30 #define C64_SPR_WIDTH_PX (8 * C64_SPR_WIDTH) |
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31 #define C64_SPR_SIZE ((C64_SPR_WIDTH * C64_SPR_HEIGHT) + 1) |
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32 |
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33 // Character constants |
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34 #define C64_CHR_WIDTH 1 // bytes |
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35 #define C64_CHR_HEIGHT 8 // lines |
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36 #define C64_CHR_WIDTH_PX (8 * C64_CHR_WIDTH) |
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37 #define C64_CHR_SIZE (C64_CHR_WIDTH * C64_CHR_HEIGHT) |
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38 |
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39 // Etc. |
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40 #define C64_RAM_SIZE (64*1024) |
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41 #define C64_NCOLORS 16 |
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42 #define C64_MAX_COLORS 16 |
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43 #define C64_VIDBANK_SIZE (16*1024) |
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44 #define C64_MAX_SPRITES (C64_VIDBANK_SIZE / C64_SPR_SIZE) |
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45 #define C64_MAX_CHARS 256 |
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46 |
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47 // Probe scores |
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48 #define DM_PROBE_SCORE_MAX 1000 |
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49 #define DM_PROBE_SCORE_GOOD 750 |
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50 #define DM_PROBE_SCORE_AVG 500 |
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51 #define DM_PROBE_SCORE_MAYBE 250 |
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52 #define DM_PROBE_SCORE_FALSE 0 |
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53 |
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54 enum |
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55 { |
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56 DM_IFMT_PALETTE, |
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57 DM_IFMT_RGB, |
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58 DM_IFMT_RGBA, |
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59 DM_IFMT_RGB_PLANE, |
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60 }; |
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61 |
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62 |
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63 // RGBx color struct |
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64 typedef struct |
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65 { |
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66 uint8_t r, g, b, x; |
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67 } DMColor; |
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68 |
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69 |
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70 // Bitmapped image struct (can be one of types specified by DM_IFMT_*) |
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71 typedef struct |
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72 { |
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73 int width, height, pitch; |
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74 BOOL constpal; |
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75 int ncolors, ctrans; |
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76 DMColor *pal; |
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77 uint8_t *data; |
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78 } DMImage; |
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79 |
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80 |
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81 // Different supported C64 bitmap "modes" |
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82 enum |
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83 { |
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84 DM_C64IFMT_HIRES, |
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85 DM_C64IFMT_MC, |
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86 DM_C64IFMT_HIRES_ILACE, |
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87 DM_C64IFMT_MC_ILACE, |
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88 DM_C64IFMT_HIRES_FLI, |
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89 DM_C64IFMT_MC_FLI, |
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90 |
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91 DM_C64IFMT_LAST_TYPE |
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92 }; |
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93 |
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94 |
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95 enum |
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96 { |
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97 DM_C64ILACE_COLOR, |
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98 DM_C64ILACE_RES, |
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99 }; |
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100 |
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101 typedef struct |
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102 { |
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103 BOOL multicolor, xexpand, yexpand; |
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104 int color, xc, yc; |
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105 uint8_t data[C64_SPR_HEIGHT][C64_SPR_WIDTH]; |
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106 } DMC64Sprite; |
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107 |
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108 |
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109 typedef struct |
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110 { |
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111 int type, // Image type (DM_C64IFMT_*) |
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112 laceType, // Interlace type (DM_C64ILACE_*) |
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113 fliType, // FLI type (if FLI used) |
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114 fliLines, // FLI on every # line |
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115 laceBank2; |
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116 |
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117 uint8_t color[C64_SCR_MAX_BANK][C64_SCR_COLOR_SIZE], |
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118 bitmap[C64_SCR_MAX_BANK][C64_SCR_BITMAP_SIZE], |
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119 screen[C64_SCR_MAX_BANK][C64_SCR_SCREEN_SIZE], |
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120 extradata[C64_SCR_EXTRADATA], |
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121 d020, bgcolor, d022, d023, d024; |
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122 |
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123 uint8_t charset[C64_MAX_CHARS][C64_CHR_HEIGHT * C64_CHR_WIDTH]; |
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124 DMC64Sprite sprites[C64_MAX_SPRITES]; |
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125 } DMC64Image; |
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126 |
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127 |
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128 enum |
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129 { |
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130 DT_COLOR_RAM, |
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131 DT_BITMAP, |
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132 DT_SCREEN_RAM, |
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133 DT_BGCOLOR, |
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134 DT_EXTRADATA, |
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135 |
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136 DT_FUNCTION, |
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137 |
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138 DT_LAST, |
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139 }; |
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140 |
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141 |
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142 typedef struct _DMDecodeOp |
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143 { |
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144 int type; |
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145 size_t offs; |
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146 int bank; |
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147 size_t size; |
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148 BOOL (*function)(DMC64Image *img, const struct _DMDecodeOp *op, const uint8_t *buf, const size_t len); |
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149 } DMDecodeOp; |
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150 |
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151 |
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152 typedef struct _DMC64ImageFormat |
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153 { |
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154 int type; |
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155 char *extension; |
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156 char *name; |
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157 int (*probe)(const uint8_t *buf, const size_t len); |
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158 int (*decode)(DMC64Image *img, const uint8_t *buf, const size_t len, const struct _DMC64ImageFormat *fmt); |
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159 int (*convert)(DMImage *, DMC64Image *); |
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160 |
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161 int ndecodeOps; |
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162 DMDecodeOp decodeOps[16]; |
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163 } DMC64ImageFormat; |
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164 |
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165 |
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166 extern const size_t dmC64DefaultSizes[DT_LAST]; |
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167 extern DMColor dmC64Palette[C64_NCOLORS]; |
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168 extern DMC64ImageFormat dmC64ImageFormats[]; |
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169 extern const int ndmC64ImageFormats; |
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170 extern const char * dmC64ImageTypeNames[]; |
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171 |
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172 |
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173 DMImage * dmImageAlloc(int width, int height); |
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174 void dmImageFree(DMImage *img); |
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175 int dmImageGetBytesPerPixel(int format); |
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176 |
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177 |
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178 int dmC64ConvertCSData(DMImage *img, int xoffs, int yoffs, const uint8_t *inBuf, int width, int height, BOOL multicolor, int *colors); |
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179 int dmC64ProbeGeneric(const uint8_t *buf, const size_t len, DMC64ImageFormat **fmt); |
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180 int dmC64DecodeGenericBMP(DMC64Image *img, const uint8_t *buf, const size_t len, const DMC64ImageFormat *fmt); |
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181 int dmC64ConvertGenericBMP2Image(DMImage *screen, const DMC64Image *img); |
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182 int dmReadDataFile(const char *filename, uint8_t **buf, size_t *size); |
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183 |
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184 #endif // LIB64GFX_H |