Mercurial > hg > dmlib
annotate lib64gfx.h @ 419:936bc27a79d6
Modularize some functions to lib64gfx, fix bitmap -> image conversion,
and implement various cleanups.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Sat, 03 Nov 2012 07:53:38 +0200 |
parents | b6a1dc3bd2c3 |
children | e4a3f183e463 |
rev | line source |
---|---|
407
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1 /* |
418 | 2 * Functions for reading and converting various restricted |
3 * C64/etc and/or indexed/paletted graphics formats. | |
407
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4 * Programmed and designed by Matti 'ccr' Hamalainen |
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5 * (C) Copyright 2012 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 |
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12 #include "dmlib.h" |
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13 |
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14 // Bitmap constants |
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15 #define C64_SCR_WIDTH 320 |
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16 #define C64_SCR_HEIGHT 200 |
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17 #define C64_SCR_CH_WIDTH (C64_SCR_WIDTH/8) |
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18 #define C64_SCR_CH_HEIGHT (C64_SCR_HEIGHT/8) |
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19 #define C64_SCR_COLOR_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT) |
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20 #define C64_SCR_SCREEN_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT) |
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21 #define C64_SCR_BITMAP_SIZE (C64_SCR_WIDTH * C64_SCR_HEIGHT/8) |
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22 #define C64_SCR_EXTRADATA 1024 |
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23 #define C64_SCR_MAX_BANK 8 |
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24 |
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25 // C64 video screen pixel aspect ratio on PAL |
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26 #define C64_SCR_PAR_XY (0.9365f) |
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27 |
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28 // Sprite constants |
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29 #define C64_SPR_WIDTH 3 // bytes |
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30 #define C64_SPR_HEIGHT 21 // lines |
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31 #define C64_SPR_WIDTH_PX (8 * C64_SPR_WIDTH) |
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32 #define C64_SPR_SIZE ((C64_SPR_WIDTH * C64_SPR_HEIGHT) + 1) |
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33 |
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34 // Character constants |
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35 #define C64_CHR_WIDTH 1 // bytes |
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36 #define C64_CHR_HEIGHT 8 // lines |
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37 #define C64_CHR_WIDTH_PX (8 * C64_CHR_WIDTH) |
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38 #define C64_CHR_SIZE (C64_CHR_WIDTH * C64_CHR_HEIGHT) |
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39 |
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40 // Etc. |
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41 #define C64_RAM_SIZE (64*1024) |
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42 #define C64_NCOLORS 16 |
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43 #define C64_MAX_COLORS 16 |
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44 #define C64_VIDBANK_SIZE (16*1024) |
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45 #define C64_MAX_SPRITES (C64_VIDBANK_SIZE / C64_SPR_SIZE) |
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46 #define C64_MAX_CHARS 256 |
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47 |
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48 // Probe scores |
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49 #define DM_PROBE_SCORE_MAX 1000 |
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50 #define DM_PROBE_SCORE_GOOD 750 |
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51 #define DM_PROBE_SCORE_AVG 500 |
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52 #define DM_PROBE_SCORE_MAYBE 250 |
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53 #define DM_PROBE_SCORE_FALSE 0 |
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54 |
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55 enum |
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56 { |
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57 DM_IFMT_PALETTE, |
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58 DM_IFMT_RGB, |
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59 DM_IFMT_RGBA, |
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60 DM_IFMT_RGB_PLANE, |
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61 }; |
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62 |
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63 |
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64 // RGBx color struct |
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65 typedef struct |
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66 { |
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67 Uint8 r, g, b, x; |
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68 } DMColor; |
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69 |
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70 |
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71 // Bitmapped image struct (can be one of types specified by DM_IFMT_*) |
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72 typedef struct |
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73 { |
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74 int width, height, pitch; |
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75 BOOL constpal; |
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76 int ncolors, ctrans; |
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77 DMColor *pal; |
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78 Uint8 *data; |
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79 } DMImage; |
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80 |
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81 |
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82 // Different supported C64 bitmap "modes" |
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83 enum |
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84 { |
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85 DM_C64IFMT_HIRES, |
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86 DM_C64IFMT_MC, |
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87 DM_C64IFMT_HIRES_ILACE, |
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88 DM_C64IFMT_MC_ILACE, |
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89 DM_C64IFMT_HIRES_FLI, |
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90 DM_C64IFMT_MC_FLI, |
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91 |
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92 DM_C64IFMT_LAST_TYPE |
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93 }; |
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94 |
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95 |
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96 enum |
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97 { |
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98 DM_C64ILACE_COLOR, |
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99 DM_C64ILACE_RES, |
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100 }; |
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101 |
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102 typedef struct |
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103 { |
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104 BOOL multicolor, xexpand, yexpand; |
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105 int color, xc, yc; |
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106 Uint8 data[C64_SPR_HEIGHT][C64_SPR_WIDTH]; |
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107 } DMC64Sprite; |
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108 |
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109 |
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110 typedef struct |
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111 { |
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112 int type, // Image type (DM_C64IFMT_*) |
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113 laceType, // Interlace type (DM_C64ILACE_*) |
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114 fliType, // FLI type (if FLI used) |
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115 fliLines, // FLI on every # line |
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116 laceBank2; |
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117 |
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118 Uint8 color[C64_SCR_MAX_BANK][C64_SCR_COLOR_SIZE], |
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119 bitmap[C64_SCR_MAX_BANK][C64_SCR_BITMAP_SIZE], |
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120 screen[C64_SCR_MAX_BANK][C64_SCR_SCREEN_SIZE], |
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121 extradata[C64_SCR_EXTRADATA], |
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122 d020, bgcolor, d022, d023, d024; |
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123 |
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124 Uint8 charset[C64_MAX_CHARS][C64_CHR_HEIGHT * C64_CHR_WIDTH]; |
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125 DMC64Sprite sprites[C64_MAX_SPRITES]; |
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126 } DMC64Image; |
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127 |
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128 |
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129 enum |
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130 { |
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131 DT_COLOR_RAM, |
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132 DT_BITMAP, |
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133 DT_SCREEN_RAM, |
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134 DT_BGCOLOR, |
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135 DT_EXTRADATA, |
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136 |
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137 DT_FUNCTION, |
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138 |
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139 DT_LAST, |
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140 }; |
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141 |
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142 |
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143 typedef struct _DMDecodeOp |
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144 { |
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145 int type; |
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146 size_t offs; |
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147 int bank; |
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148 size_t size; |
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149 BOOL (*function)(DMC64Image *img, const struct _DMDecodeOp *op, const Uint8 *buf, const size_t len); |
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150 } DMDecodeOp; |
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151 |
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152 |
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153 typedef struct _DMC64ImageFormat |
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154 { |
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155 int type; |
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156 char *extension; |
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157 char *name; |
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158 int (*probe)(const Uint8 *buf, const size_t len); |
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159 int (*decode)(DMC64Image *img, const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt); |
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160 int (*convert)(DMImage *, DMC64Image *); |
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161 |
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162 int ndecodeOps; |
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163 DMDecodeOp decodeOps[16]; |
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164 } DMC64ImageFormat; |
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165 |
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166 |
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167 extern const size_t dmC64DefaultSizes[DT_LAST]; |
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168 extern DMColor dmC64Palette[C64_NCOLORS]; |
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169 extern DMC64ImageFormat dmC64ImageFormats[]; |
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170 extern const int ndmC64ImageFormats; |
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171 extern const char * dmC64ImageTypeNames[]; |
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172 |
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173 |
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174 DMImage * dmImageAlloc(int width, int height); |
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175 void dmImageFree(DMImage *img); |
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176 int dmImageGetBytesPerPixel(int format); |
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177 |
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178 |
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179 int dmC64ConvertCSData(DMImage *img, int xoffs, int yoffs, const Uint8 *inBuf, int width, int height, BOOL multicolor, int *colors); |
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180 int dmC64ProbeGeneric(const Uint8 *buf, const size_t len, DMC64ImageFormat **fmt); |
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181 int dmC64DecodeGenericBMP(DMC64Image *img, const Uint8 *buf, const size_t len, const DMC64ImageFormat *fmt); |
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182 int dmC64ConvertGenericBMP2Image(DMImage *screen, const DMC64Image *img); |
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183 int dmC64DecodeBMP(DMC64Image *img, const Uint8 *buf, const size_t len, const size_t probeOffs, const size_t loadOffs, DMC64ImageFormat **fmt, DMC64ImageFormat *forced); |
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184 |
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185 int dmReadDataFile(FILE *inFile, const char *filename, Uint8 **buf, size_t *size); |
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186 |
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187 #endif // LIB64GFX_H |