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annotate tools/lib64gfx.h @ 1374:9edb17aa4a0a

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Forward declare typedef struct _DMC64Image;
author Matti Hamalainen <ccr@tnsp.org>
date Sun, 24 Sep 2017 15:22:45 +0300
parents fc5ee5b4b0e9
children f5368c13a872
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1 /*
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2 * Functions for reading and converting various restricted
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3 * C64/etc and/or indexed/paletted graphics formats.
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4 * Programmed and designed by Matti 'ccr' Hamalainen
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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
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12 #include "libgfx.h"
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13
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14 #ifdef __cplusplus
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15 extern "C" {
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16 #endif
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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)
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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_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
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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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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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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 _DMC64Image DMC64Image;
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111
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112 typedef struct _DMC64Image
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113 {
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114 int type, // Image type (D64_FMT_*)
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115 fliType, // FLI type (if FLI used)
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116 laceType, // Interlace type (D64_ILACE_*)
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117 laceBank1, // Interlace video bank indices
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118 laceBank2;
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119
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120 int width, height; // Width and height in pixels
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121 int ch_width, ch_height; // Width and height in charblocks
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122
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123 Uint8
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124 *color[C64_SCR_MAX_BANK],
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125 *bitmap[C64_SCR_MAX_BANK],
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126 *screen[C64_SCR_MAX_BANK],
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127 *charmem[C64_SCR_MAX_BANK],
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128 *extraData[C64_MAX_EXTRA_DATA],
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129 d020, bgcolor, d022, d023, d024;
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130
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131 size_t extraDataSizes[C64_MAX_EXTRA_DATA];
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132 DMC64Sprite sprites[C64_MAX_SPRITES];
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133 } DMC64Image;
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134
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135
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136 enum
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137 {
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138 DT_COLOR_RAM,
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139 DT_BITMAP,
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140 DT_SCREEN_RAM,
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141 DT_COLOR_REG,
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142 DT_COLOR_SET,
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143 DT_EXTRA_DATA,
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144
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145 DT_DEC_FUNCTION,
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146 DT_ENC_FUNCTION,
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147
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148 DT_CHAR_DATA,
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149 DT_CHAR_CONFIG,
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150
407
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151 DT_LAST,
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152 };
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153
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154 #define D64_MAX_ENCDEC_OPS 16
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155
407
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156
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157 typedef struct _DMC64EncDecOp
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158 {
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159 int type;
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160 size_t offs;
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161 int bank;
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162 size_t size;
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163 BOOL (*decfunction)(DMC64Image *img, const struct _DMC64EncDecOp *op, const Uint8 *buf, const size_t len);
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164 BOOL (*encfunction)(const struct _DMC64EncDecOp *op, Uint8 **buf, size_t *len, const DMC64Image *img);
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165 } DMC64EncDecOp;
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166
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167
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168 typedef struct _DMC64ImageFormat
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169 {
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170 int type; // Type flags, see D64_FMT_*
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171 char *fext; // Filename extension
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172 char *name; // Format description/name
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173
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174 size_t addr; // Loading address (0 if no loading address)
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175 size_t size; // Size, including loading address. Only used in encoding, if even there (0 if no static size)
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176
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177 int width, height; // Width and height in pixels
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178 int ch_width, ch_height; // Width and height in charblocks
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179
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180 int (*probe)(const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt);
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181 int (*decode)(DMC64Image *img, const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt);
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182 int (*encode)(DMC64Image *img, Uint8 **buf, size_t *len, const struct _DMC64ImageFormat *fmt);
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183 int (*convertFrom)(DMImage *, const DMC64Image *);
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184 int (*convertTo)(DMImage *, DMC64Image *);
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185
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186 DMC64EncDecOp encdecOps[D64_MAX_ENCDEC_OPS];
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187 } DMC64ImageFormat;
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188
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189
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190 extern DMColor dmC64Palette[C64_NCOLORS];
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191 extern const DMC64ImageFormat dmC64ImageFormats[];
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192 extern const int ndmC64ImageFormats;
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193
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194
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195 DMC64Image *dmC64ImageAlloc(int width, int height, int ch_width, int ch_height);
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196 void dmC64ImageFree(DMC64Image *img);
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197
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198
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199 char * dmC64GetImageTypeString(char *buf, const size_t len, const int type);
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200 int dmC64ConvertCSDataToImage(DMImage *img, int xoffs, int yoffs, const Uint8 *inBuf, int width, int height, BOOL multicolor, int *colors);
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201
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202 int dmC64DecodeGenericBMP(DMC64Image *img, const Uint8 *buf, const size_t len, const DMC64ImageFormat *fmt);
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203 int dmC64EncodeGenericBMP(Uint8 **pbuf, size_t *plen, const DMC64Image *img, const DMC64ImageFormat *fmt);
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204 int dmC64ConvertGenericBMP2Image(DMImage *dst, const DMC64Image *src);
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205
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206 int dmC64ConvertBMP2Image(DMImage **pdst, const DMC64Image *src, const DMC64ImageFormat *fmt);
537
32d9e67da189 Rename generic probing function to match the style of other lib64gfx functions.
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207 int dmC64ProbeBMP(const Uint8 *buf, const size_t len, const DMC64ImageFormat **fmt);
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208 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
936bc27a79d6 Modularize some functions to lib64gfx, fix bitmap -> image conversion,
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209
435
e4a3f183e463 Modularize some more.
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210
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211 #ifdef __cplusplus
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212 }
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213 #endif
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214
407
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215 #endif // LIB64GFX_H