Mercurial > hg > dmlib
annotate lib64gfx.h @ 530:5b37a2e427b7
Greatly simplify and also improve the multicolor/hires/lace bitmap->image
conversion functionality. This breaks the API, however, adjust gfxconv and
view64 accordingly.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Thu, 22 Nov 2012 15:28:27 +0200 |
parents | 6f141f760c54 |
children | fbfdc9e4fe2b |
rev | line source |
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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 |
435 | 12 #include "libgfx.h" |
13 | |
14 #ifdef __cplusplus | |
15 extern "C" { | |
16 #endif | |
17 | |
407
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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) |
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24 #define C64_SCR_COLOR_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT) |
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25 #define C64_SCR_SCREEN_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT) |
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26 #define C64_SCR_BITMAP_SIZE (C64_SCR_WIDTH * C64_SCR_HEIGHT/8) |
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27 #define C64_SCR_EXTRADATA 1024 |
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28 #define C64_SCR_MAX_BANK 8 |
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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 |
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53 // Different supported C64 bitmap "modes" |
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54 enum |
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55 { |
530
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56 D64_FMT_HIRES = 0x0000, |
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57 D64_FMT_MC = 0x0001, |
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58 D64_FMT_ILACE = 0x0002, |
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59 D64_FMT_FLI = 0x0004, |
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60 |
530
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61 D64_FMT_MODE_MASK = 0x000f, |
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62 |
407
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63 }; |
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64 |
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65 enum |
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66 { |
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67 D64_FLI_2BANK, |
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68 D64_FLI_4BANK, |
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69 D64_FLI_8BANK, |
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70 }; |
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71 |
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72 enum |
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73 { |
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74 D64_ILACE_COLOR, |
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75 D64_ILACE_RES, |
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76 }; |
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77 |
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78 typedef struct |
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79 { |
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80 BOOL multicolor, xexpand, yexpand; |
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81 int color, xc, yc; |
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82 Uint8 data[C64_SPR_HEIGHT][C64_SPR_WIDTH]; |
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83 } DMC64Sprite; |
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84 |
512
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85 enum |
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86 { |
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87 D64_CHR_GLOBAL, // use font-global setting |
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88 D64_CHR_MULTICOLOR, // character is multicolor |
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89 D64_CHR_HIRES, |
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90 }; |
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91 |
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92 typedef struct |
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93 { |
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94 int mode, color; |
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95 Uint8 data[C64_CHR_HEIGHT]; |
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96 } DMC64Char; |
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97 |
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98 |
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99 typedef struct |
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100 { |
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101 BOOL multicolor; |
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102 int colbg, color, col1, col2; |
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103 int nglyphs; |
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104 DMC64Char *glyphs; |
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105 } DMC64Font; |
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106 |
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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 fliType, // FLI type (if FLI used) |
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113 laceType, // Interlace type (DM_C64ILACE_*) |
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114 laceBank1, |
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115 laceBank2; |
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116 |
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117 Uint8 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 charset[C64_MAX_CHARS][C64_CHR_HEIGHT * C64_CHR_WIDTH]; |
407
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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_DEC_FUNCTION, |
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137 DT_ENC_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 |
510
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143 typedef struct _DMC64EncDecOp |
407
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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 (*decfunction)(DMC64Image *img, const struct _DMC64EncDecOp *op, const Uint8 *buf, const size_t len); |
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150 BOOL (*encfunction)(const struct _DMC64EncDecOp *op, Uint8 **buf, size_t *len, const DMC64Image *img); |
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151 } DMC64EncDecOp; |
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152 |
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153 |
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154 typedef struct _DMC64ImageFormat |
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155 { |
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156 int type; |
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157 char *extension; |
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158 char *name; |
511
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159 size_t addr; // Loading address (0 if no loading address) |
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160 size_t size; // Size, including loading address. Only used in encoding, if even there (0 if no static size) |
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161 int (*probe)(const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt); |
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162 int (*decode)(DMC64Image *img, const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt); |
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163 int (*encode)(DMC64Image *img, Uint8 **buf, size_t *len, const struct _DMC64ImageFormat *fmt); |
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164 int (*convertFrom)(DMImage *, DMC64Image *); |
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165 int (*convertTo)(DMImage *, DMC64Image *); |
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166 |
515 | 167 int nencdecOps; |
168 DMC64EncDecOp encdecOps[16]; | |
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169 } DMC64ImageFormat; |
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170 |
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171 |
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172 extern const size_t dmC64DefaultSizes[DT_LAST]; |
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173 extern DMColor dmC64Palette[C64_NCOLORS]; |
516 | 174 extern const DMC64ImageFormat dmC64ImageFormats[]; |
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175 extern const int ndmC64ImageFormats; |
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176 |
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177 |
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178 char * dmC64GetImageTypeString(char *buf, const size_t len, const int type); |
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179 int dmC64ConvertCSData(DMImage *img, int xoffs, int yoffs, const Uint8 *inBuf, int width, int height, BOOL multicolor, int *colors); |
516 | 180 int dmC64ProbeGeneric(const Uint8 *buf, const size_t len, const 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); |
516 | 183 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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184 |
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185 int dmReadDataFile(FILE *inFile, const char *filename, Uint8 **buf, size_t *size); |
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186 |
435 | 187 |
188 #ifdef __cplusplus | |
189 } | |
190 #endif | |
191 | |
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192 #endif // LIB64GFX_H |