annotate tools/lib64gfx.h @ 2129:2129d4ac6f45

Refactor c64 image rendering completely to be more flexible.
author Matti Hamalainen <ccr@tnsp.org>
date Mon, 27 May 2019 11:29:37 +0300
parents 56d4dc81774b
children 6528a1398e8e
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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 2012-2019 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 #include "dmgrowbuf.h"
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14
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15 #ifdef __cplusplus
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16 extern "C" {
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17 #endif
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18
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20 // Define default character ROM path
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21 #ifndef DM_DEF_CHARGEN
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22 #define DM_DEF_CHARGEN "/usr/local/lib64/vice/C64/chargen"
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23 #endif
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24
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25
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26 // Bitmap constants
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27 #define D64_SCR_WIDTH 320
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28 #define D64_SCR_HEIGHT 200
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29 #define D64_SCR_CH_WIDTH (D64_SCR_WIDTH/8)
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30 #define D64_SCR_CH_HEIGHT (D64_SCR_HEIGHT/8)
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31 #define D64_MAX_EXTRA_DATA 64
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33 // C64 video screen pixel aspect ratio on PAL
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34 #define D64_SCR_PAR_XY (0.9365f)
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35
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36 // Sprite constants
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37 #define D64_SPR_WIDTH_PX 24
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38 #define D64_SPR_HEIGHT_PX 21
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39 #define D64_SPR_WIDTH_UT (D64_SPR_WIDTH_PX / 8) // bytes
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40 #define D64_SPR_HEIGHT_UT D64_SPR_HEIGHT_PX
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41 #define D64_SPR_SIZE ((D64_SPR_WIDTH_UT * D64_SPR_HEIGHT_UT) + 1)
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42
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43 // Character constants
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44 #define D64_CHR_WIDTH_PX 8
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45 #define D64_CHR_HEIGHT_PX 8
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46 #define D64_CHR_WIDTH_UT 1 // bytes
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47 #define D64_CHR_HEIGHT_UT 8 // lines
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48 #define D64_CHR_SIZE (D64_CHR_WIDTH_UT * D64_CHR_HEIGHT_UT)
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49
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50 // Etc.
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51 #define D64_NCOLORS 16
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52 #define D64_VIDBANK_SIZE (16*1024)
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53 #define D64_MAX_SPRITES 1024
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54 #define D64_MAX_CHARS 256
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55
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56
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57 // Different supported flags/modes
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58 enum
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59 {
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60 D64_FMT_HIRES = 0x0001, // Hi-res
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61 D64_FMT_MC = 0x0002, // MultiColor
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62 D64_FMT_ECM = 0x0003, // ECM mode (applies only to character mode)
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63 D64_FMT_MASK = 0x000f,
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64
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65 D64_FMT_ILACE = 0x0010, // Interlace
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66 D64_FMT_FLI = 0x0020, // FLI
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67 D64_FMT_CHAR = 0x0040, // Character mode
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68 D64_FMT_BORDER = 0x0080, // Uses border area
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69 };
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70
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71
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72 // Different types of interlace
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73 enum
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74 {
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75 D64_ILACE_NONE = 0x0000, // Not set (invalid for interlaced images)
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76 D64_ILACE_RES = 0x0001, // Interlace doubles resolution
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77 D64_ILACE_COLOR = 0x0002, // Uses color mixing
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78 };
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79
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80
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81 // Charmode screen memory configuration
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82 enum
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83 {
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84 D64_CHCFG_SCREEN, // Use screen memory
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85 D64_CHCFG_LINEAR = 1, // Generate linear pattern so that first line
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86 // of chars is 0-39, second 40-79, up to 255.
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87 };
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89
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90 // Image <-> bitmap conversion dithering
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91 enum
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92 {
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93 D64_DITH_NONE = 0, // No dithering
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94 };
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95
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97 // Different enc/dec operation types (op->type)
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98 enum
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99 {
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100 DO_COPY, // Perform copy between memory (from/to offset) and subject
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101 DO_SET_MEM, // Set subject value or fill subject memory area to byte value from offset
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102 DO_SET_OP, // Like above but value from op->offs field instead
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103
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104 DO_SET_MEM_HI, // Copy one byte value like DO_SET_MEM, but high nibble only
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105 DO_SET_MEM_LO, // Like above, but low nibble
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106
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107 DO_FUNC, // Execute specified decoding / encoding function
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108
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109 DO_CHAR_CFG, // Set character mode configuration
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110
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111 DO_LAST, // Last opcode, end processing
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112 };
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113
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114
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115 // "Subjects" of operations (op->subject)
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116 enum
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117 {
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118 DS_COLOR_RAM,
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119 DS_BITMAP_RAM,
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120 DS_SCREEN_RAM,
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121 DS_EXTRA_DATA,
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122 DS_CHAR_DATA,
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123
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124 DS_D020,
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125 DS_BGCOL,
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126 DS_D021,
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127 DS_D022,
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128 DS_D023,
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129 DS_D024,
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130
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131 DS_LAST
917
df3a74f230d9 Initial implementation of charmode support in lib64gfx.
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132 };
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133
407
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134
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135 typedef struct
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136 {
1931
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137 int dither; // Dither mode (D64_DITH_*)
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138 BOOL aspect; // Correct pixel aspect ratio?
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139 } DMC64ImageConvSpec;
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140
410679d2fe8a "Enable" the image->c64 bitmap conversion path in gfxconv. It does not work
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diff changeset
141
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parents: 1923
diff changeset
142 typedef struct
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parents: 1923
diff changeset
143 {
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144 Uint8 *data;
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145 size_t size;
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146 } DMC64MemBlock;
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147
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148
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149 typedef struct
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150 {
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151 BOOL multicolor, xexpand, yexpand;
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152 int color, xc, yc;
2125
56d4dc81774b Rename various C64_* constants to D64_*.
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parents: 2121
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153 Uint8 data[D64_SPR_HEIGHT_UT][D64_SPR_WIDTH_UT];
1668
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154 } DMC64Sprite;
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155
1741717b1ae5 Big overhaul to the enc/dec operator system to be more flexible.
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156
1934
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157 typedef struct _DMC64ImageCommonFormat DMC64ImageCommonFormat;
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158 typedef struct _DMC64ImageFormat DMC64ImageFormat;
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159
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160
1374
9edb17aa4a0a Forward declare typedef struct _DMC64Image;
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161 typedef struct _DMC64Image
407
59244a7ae37f Move c64 utilities to the engine lib, as we benefit from a common framework.
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diff changeset
162 {
1947
8896d5676f1b Architectural change: remove some duplicated variables from DMC64Image
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parents: 1935
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163 DMC64ImageCommonFormat *fmt;
8896d5676f1b Architectural change: remove some duplicated variables from DMC64Image
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parents: 1935
diff changeset
164 int laceType, // Interlace type (D64_ILACE_*)
1935
489dde33f6b6 Cosmetics, add comments.
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parents: 1934
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165 nbanks; // Number of video banks used
1482
df6dacb48970 Rename some struct members, and sanitize handling of DMC64Image allocation more.
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parents: 1467
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166
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167 // Bitmaps, color RAM, screen, etc. blocks * nbanks
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168 // Not all of them may be allocated
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169 DMC64MemBlock
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170 *color,
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171 *bitmap,
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172 *screen,
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173 *charData;
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parents: 926
diff changeset
174
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175 // Other standard colours
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176 Uint8 d020, bgcolor, d022, d023, d024;
407
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177
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178 // Extra data areas used by some formats,
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179 // for example raster colours might be stored
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180 DMC64MemBlock extraData[D64_MAX_EXTRA_DATA];
1376
67ae449cf9e1 More work on making various FLI etc. format decoding more flexible.
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181
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182 //DMC64Sprite sprites[D64_MAX_SPRITES];
407
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183 } DMC64Image;
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184
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185
510
43ea59887c69 Start work on making C64 formats encoding possible by changing DMDecodeOps
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186 typedef struct _DMC64EncDecOp
407
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187 {
1668
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188 int type; // Operation type (DO_*)
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diff changeset
189 int subject; // Operation "subject" (DS_*)
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190
1846
88cef7758303 Implement data block offset in certain DMC64EncDecOps. This allows us to
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parents: 1826
diff changeset
191 size_t offs; // Offset in "memory"
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parents: 1826
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192 int bank; // Bank number or extradata index
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parents: 1826
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193 size_t size; // Size of data (0 for "default")
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parents: 1826
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194 size_t offs2; // Offset in data-block
1668
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diff changeset
195
2114
27cf33c3a646 Return actual error code from enc and dec functions instead of just BOOL.
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parents: 2113
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196 int (*decFunction)(const struct _DMC64EncDecOp *op, DMC64Image *img, const DMGrowBuf *buf, const DMC64ImageCommonFormat *fmt);
27cf33c3a646 Return actual error code from enc and dec functions instead of just BOOL.
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parents: 2113
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197 int (*encFunction)(const struct _DMC64EncDecOp *op, DMGrowBuf *buf, const DMC64Image *img, const DMC64ImageCommonFormat *fmt);
510
43ea59887c69 Start work on making C64 formats encoding possible by changing DMDecodeOps
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198 } DMC64EncDecOp;
407
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199
59244a7ae37f Move c64 utilities to the engine lib, as we benefit from a common framework.
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parents:
diff changeset
200
1934
23a344b5e4f1 Cleanups.
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diff changeset
201 #define D64_MAX_ENCDEC_OPS 64
1592
91d1bb571fca Implement common encdec ops lists for sharing oplists between formats that
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parents: 1591
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202 typedef DMC64EncDecOp DMC64EncDecOpList[D64_MAX_ENCDEC_OPS];
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parents: 1591
diff changeset
203
91d1bb571fca Implement common encdec ops lists for sharing oplists between formats that
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parents: 1591
diff changeset
204
2129
2129d4ac6f45 Refactor c64 image rendering completely to be more flexible.
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parents: 2125
diff changeset
205 typedef int (*DMC64GetPixelFunc)(Uint8 *col, const DMC64Image *img, const int rasterX, const int rasterY);
1934
23a344b5e4f1 Cleanups.
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parents: 1933
diff changeset
206
23a344b5e4f1 Cleanups.
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parents: 1933
diff changeset
207
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diff changeset
208 typedef struct _DMC64ImageCommonFormat
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
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209 {
1935
489dde33f6b6 Cosmetics, add comments.
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parents: 1934
diff changeset
210 int type, // Type flags, see D64_FMT_*
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parents: 1934
diff changeset
211 width, height, // Width and height in pixels
2056
c27ed6465022 Add pixel aspect ratio information for C64 formats. Not used yet.
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diff changeset
212 chWidth, chHeight, // Width and height in charblocks
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parents: 1984
diff changeset
213 aspectX, aspectY; // Pixel aspectX/Y
1775
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diff changeset
214
1931
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diff changeset
215 int (*convertFrom)(DMImage *, const DMC64Image *, const DMC64ImageFormat *fmt, const DMC64ImageConvSpec *spec);
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diff changeset
216 int (*convertTo)(DMC64Image *, const DMImage *, const DMC64ImageFormat *fmt, const DMC64ImageConvSpec *spec);
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
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parents: 1774
diff changeset
217
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
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diff changeset
218 DMC64GetPixelFunc getPixel;
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diff changeset
219
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
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diff changeset
220 DMC64EncDecOpList encdecOps;
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221 } DMC64ImageCommonFormat;
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diff changeset
222
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
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diff changeset
223
407
59244a7ae37f Move c64 utilities to the engine lib, as we benefit from a common framework.
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diff changeset
224 typedef struct _DMC64ImageFormat
59244a7ae37f Move c64 utilities to the engine lib, as we benefit from a common framework.
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parents:
diff changeset
225 {
922
658bf4c452d0 Comments, cosmetics.
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parents: 921
diff changeset
226 char *fext; // Filename extension
658bf4c452d0 Comments, cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 921
diff changeset
227 char *name; // Format description/name
658bf4c452d0 Comments, cosmetics.
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parents: 921
diff changeset
228
511
4cdcaeb68b54 Collapse most of the probing functions into one generic probe, as they only
Matti Hamalainen <ccr@tnsp.org>
parents: 510
diff changeset
229 size_t addr; // Loading address (0 if no loading address)
1495
acb607e2c350 Clarify a comment.
Matti Hamalainen <ccr@tnsp.org>
parents: 1494
diff changeset
230 size_t size; // Size, including loading address. Only used in probing and encoding.
924
732787cccca8 Add dimension (w/h) information fields to C64 image format struct.
Matti Hamalainen <ccr@tnsp.org>
parents: 923
diff changeset
231
1545
3b613fcbf3ff Improve how format read/write capabilities are marked and shown.
Matti Hamalainen <ccr@tnsp.org>
parents: 1537
diff changeset
232 int flags; // DM_FMT_* flags, see libgfx.h
3b613fcbf3ff Improve how format read/write capabilities are marked and shown.
Matti Hamalainen <ccr@tnsp.org>
parents: 1537
diff changeset
233
1780
5ea4713e9e0f Change c64 format probing API to use DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1775
diff changeset
234 int (*probe)(const DMGrowBuf *buf, const DMC64ImageFormat *fmt);
1442
3773281491c9 Cleanups.
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parents: 1426
diff changeset
235
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
Matti Hamalainen <ccr@tnsp.org>
parents: 1774
diff changeset
236 int (*decode)(DMC64Image *img, const DMGrowBuf *buf, const DMC64ImageFormat *fmt);
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parents: 1774
diff changeset
237 int (*encode)(DMGrowBuf *buf, const DMC64Image *img, const DMC64ImageFormat *fmt);
1442
3773281491c9 Cleanups.
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parents: 1426
diff changeset
238
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
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parents: 1774
diff changeset
239 DMC64ImageCommonFormat formatDef, *format;
407
59244a7ae37f Move c64 utilities to the engine lib, as we benefit from a common framework.
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parents:
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240 } DMC64ImageFormat;
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parents:
diff changeset
241
59244a7ae37f Move c64 utilities to the engine lib, as we benefit from a common framework.
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parents:
diff changeset
242
1637
58ef0124394d Add some comments.
Matti Hamalainen <ccr@tnsp.org>
parents: 1592
diff changeset
243 //
1650
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
Matti Hamalainen <ccr@tnsp.org>
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244 // Compression types and flags
1637
58ef0124394d Add some comments.
Matti Hamalainen <ccr@tnsp.org>
parents: 1592
diff changeset
245 //
1650
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diff changeset
246 enum
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
Matti Hamalainen <ccr@tnsp.org>
parents: 1647
diff changeset
247 {
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
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diff changeset
248 DM_COMP_RLE_MARKER = 1, // RLE with a separate marker byte
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
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249 DM_COMP_RLE_MASK = 2, // RLE that has marker bits and lower part acts as run length
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
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diff changeset
250 };
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
Matti Hamalainen <ccr@tnsp.org>
parents: 1647
diff changeset
251
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
Matti Hamalainen <ccr@tnsp.org>
parents: 1647
diff changeset
252 enum
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
Matti Hamalainen <ccr@tnsp.org>
parents: 1647
diff changeset
253 {
1660
7555c8803529 More work on improving the generic RLE decoder/encoder.
Matti Hamalainen <ccr@tnsp.org>
parents: 1650
diff changeset
254 DM_RLE_BYTE_RUNS = 0x0001, // Uses one-byte run lengths
7555c8803529 More work on improving the generic RLE decoder/encoder.
Matti Hamalainen <ccr@tnsp.org>
parents: 1650
diff changeset
255 DM_RLE_WORD_RUNS = 0x0002, // Uses two-byte (word) run lengths
1825
c22d3b309f34 Adjust DM_RLE_RUNS_MASK.
Matti Hamalainen <ccr@tnsp.org>
parents: 1822
diff changeset
256 DM_RLE_RUNS_MASK = 0x0003,
1650
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
Matti Hamalainen <ccr@tnsp.org>
parents: 1647
diff changeset
257
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
Matti Hamalainen <ccr@tnsp.org>
parents: 1647
diff changeset
258 DM_RLE_ORDER_1 = 0x0000, // Order: <marker>, <count/run length>, <data>
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
Matti Hamalainen <ccr@tnsp.org>
parents: 1647
diff changeset
259 DM_RLE_ORDER_2 = 0x0010, // Order: <marker>, <data>, <count/run length>
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
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parents: 1647
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260 DM_RLE_ORDER_MASK = 0x00f0,
1707
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parents: 1668
diff changeset
261
1786
52e90130453b Add descriptive comments to some of RLE decoder flags that were missing "documentation".
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parents: 1783
diff changeset
262 DM_RLE_BACKWARDS_INPUT = 0x0100, // Input is read backwards
52e90130453b Add descriptive comments to some of RLE decoder flags that were missing "documentation".
Matti Hamalainen <ccr@tnsp.org>
parents: 1783
diff changeset
263 DM_RLE_BACKWARDS_OUTPUT = 0x0200, // Output is written backwards
52e90130453b Add descriptive comments to some of RLE decoder flags that were missing "documentation".
Matti Hamalainen <ccr@tnsp.org>
parents: 1783
diff changeset
264 DM_RLE_ZERO_COUNT_MAX = 0x0400, // Zero "count" / run length value is max run (2^8, 2^16)
1720
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parents: 1719
diff changeset
265
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1719
diff changeset
266 DM_OUT_CROP_NONE = 0x0000,
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1719
diff changeset
267 DM_OUT_CROP_START = 0x1000,
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
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parents: 1719
diff changeset
268 DM_OUT_CROP_END = 0x2000,
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
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parents: 1719
diff changeset
269 DM_OUT_CROP_MASK = 0xf000,
1650
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parents: 1647
diff changeset
270 };
1505
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parents: 1503
diff changeset
271
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
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parents: 1503
diff changeset
272
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
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parents: 1503
diff changeset
273 typedef struct
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
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parents: 1503
diff changeset
274 {
1711
4fd94bf558b3 Add function name field to DMCompParams struct and set it in places where we use DMCompParams.
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parents: 1709
diff changeset
275 char *func;
1505
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parents: 1503
diff changeset
276 int type;
1650
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parents: 1647
diff changeset
277 int flags;
1720
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Matti Hamalainen <ccr@tnsp.org>
parents: 1719
diff changeset
278 size_t cropOutLen;
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
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parents: 1719
diff changeset
279
1650
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280 Uint8
1660
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281 // DM_COMP_RLE_MARKER mode
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
282 rleMarkerB, // Marker byte for byte length runs (if DM_RLE_BYTE_RUNS used)
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
283 rleMarkerW, // Marker byte for word length runs (if DM_RLE_WORD_RUNS used)
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parents: 1650
diff changeset
284
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
285 // DM_COMP_RLE_MASK mode
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
286 rleMarkerBits,
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parents: 1650
diff changeset
287 rleMarkerMask, // Mask bits for marker: data & rleMarkerMask == rleMarkerBits
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
288 rleCountMask; // Mask bits for length: count = data & rleCountMask
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
289
1707
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parents: 1668
diff changeset
290 unsigned int
1660
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parents: 1650
diff changeset
291 // Minimum and maximum run lengths
7555c8803529 More work on improving the generic RLE decoder/encoder.
Matti Hamalainen <ccr@tnsp.org>
parents: 1650
diff changeset
292 rleMinCountB,
7555c8803529 More work on improving the generic RLE decoder/encoder.
Matti Hamalainen <ccr@tnsp.org>
parents: 1650
diff changeset
293 rleMinCountW,
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
294 rleMaxCountB,
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
295 rleMaxCountW;
1505
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parents: 1503
diff changeset
296 } DMCompParams;
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
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parents: 1503
diff changeset
297
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
Matti Hamalainen <ccr@tnsp.org>
parents: 1503
diff changeset
298
1503
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
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parents: 1499
diff changeset
299 //
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
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parents: 1499
diff changeset
300 // Global variables
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
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parents: 1499
diff changeset
301 //
2125
56d4dc81774b Rename various C64_* constants to D64_*.
Matti Hamalainen <ccr@tnsp.org>
parents: 2121
diff changeset
302 extern DMColor dmDefaultC64Palette[D64_NCOLORS];
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
Matti Hamalainen <ccr@tnsp.org>
parents: 1774
diff changeset
303 extern DMC64ImageFormat dmC64ImageFormats[];
407
59244a7ae37f Move c64 utilities to the engine lib, as we benefit from a common framework.
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
304 extern const int ndmC64ImageFormats;
59244a7ae37f Move c64 utilities to the engine lib, as we benefit from a common framework.
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
305
1488
c71b6c5204af Factor the C64 bitmap image format info dump function to lib64gfx and use it from 64vw.
Matti Hamalainen <ccr@tnsp.org>
parents: 1486
diff changeset
306
1503
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parents: 1499
diff changeset
307 //
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
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parents: 1499
diff changeset
308 // Miscellaneous functions
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
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parents: 1499
diff changeset
309 //
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
Matti Hamalainen <ccr@tnsp.org>
parents: 1774
diff changeset
310 void dmC64InitializeFormats(void);
1780
5ea4713e9e0f Change c64 format probing API to use DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1775
diff changeset
311 int dmC64ProbeBMP(const DMGrowBuf *buf, const DMC64ImageFormat **fmt);
1774
88354355b8e1 Move dmC64ProbeBMP() to more logical place in the source.
Matti Hamalainen <ccr@tnsp.org>
parents: 1764
diff changeset
312
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
313 char * dmC64GetImageTypeString(char *buf, const size_t len, const int type, const BOOL lng);
1822
9bec535956fd Add indentation parameter to dmC64ImageDump().
Matti Hamalainen <ccr@tnsp.org>
parents: 1786
diff changeset
314 void dmC64ImageDump(FILE *fh, const DMC64Image *img, const DMC64ImageFormat *fmt, const char *indent);
1588
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
315
2094
4276b8c0fef0 Revamp how the DMImage palette system and color formats work, as preparation
Matti Hamalainen <ccr@tnsp.org>
parents: 2056
diff changeset
316 int dmSetDefaultC64Palette(DMImage *img);
4276b8c0fef0 Revamp how the DMImage palette system and color formats work, as preparation
Matti Hamalainen <ccr@tnsp.org>
parents: 2056
diff changeset
317 int dmSetMixedColorC64Palette(DMImage *img);
1732
07111a60cd4e Add dmSetMixedColorC64Palette() for setting a 256 entry "mixed color"
Matti Hamalainen <ccr@tnsp.org>
parents: 1726
diff changeset
318
1780
5ea4713e9e0f Change c64 format probing API to use DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1775
diff changeset
319 BOOL dmCompareAddr16(const DMGrowBuf *buf, const size_t offs, const Uint16 addr);
1588
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
320 int dmC64ImageGetNumBanks(const DMC64ImageFormat *fmt);
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
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parents: 1586
diff changeset
321
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
322 // C64 bitmap image allocation/freeing
1588
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
323 int dmC64MemBlockAlloc(DMC64MemBlock *blk, const size_t size);
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
324 int dmC64MemBlockCopy(DMC64MemBlock *dst, const DMC64MemBlock *src);
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
325 void dmC64MemBlockFree(DMC64MemBlock *blk);
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
326
1378
c465860e44ed Make c64 image bank allocation dynamic.
Matti Hamalainen <ccr@tnsp.org>
parents: 1376
diff changeset
327 DMC64Image *dmC64ImageAlloc(const DMC64ImageFormat *fmt);
931
2270d7f3af77 Refactor the DMC64Image handling to be more dynamic, and start
Matti Hamalainen <ccr@tnsp.org>
parents: 926
diff changeset
328 void dmC64ImageFree(DMC64Image *img);
2270d7f3af77 Refactor the DMC64Image handling to be more dynamic, and start
Matti Hamalainen <ccr@tnsp.org>
parents: 926
diff changeset
329
2270d7f3af77 Refactor the DMC64Image handling to be more dynamic, and start
Matti Hamalainen <ccr@tnsp.org>
parents: 926
diff changeset
330
1503
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
331 // Encoding and decoding of formats and images
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
332 int dmC64ConvertCSDataToImage(DMImage *img, int xoffs, int yoffs, const Uint8 *inBuf, int width, int height, BOOL multicolor, int *colors);
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
333
1852
219417325036 Split dmC64GetOpMemBlockAndName() into dmC64GetOpMemBlock() and
Matti Hamalainen <ccr@tnsp.org>
parents: 1846
diff changeset
334 const char *dmC64GetOpSubjectName(const int subject);
2108
5f8f170f8774 Change dmC64GetOpMemBlock() function API.
Matti Hamalainen <ccr@tnsp.org>
parents: 2094
diff changeset
335 const DMC64MemBlock * dmC64GetOpMemBlock(const DMC64Image *img, const int subject, const int bank);
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
336 int dmC64SanityCheckEncDecOp(const int i, const DMC64EncDecOp *op, const DMC64Image *img);
2109
510ea816d1ff Add helper function dmC64MemBlockAllocSubj().
Matti Hamalainen <ccr@tnsp.org>
parents: 2108
diff changeset
337 int dmC64MemBlockAllocSubj(DMC64Image *img, const int subject, const int bank);
1916
34ba8e2d2dd7 Split dmC64GetOpSize() to dmC64GetSubjectSize() and dmC64GetOpSubjectSize().
Matti Hamalainen <ccr@tnsp.org>
parents: 1859
diff changeset
338
1933
c5a46cb4cce5 Change DMC64ImageFormat parameter of dmC64GetSubjectSize() and
Matti Hamalainen <ccr@tnsp.org>
parents: 1932
diff changeset
339 size_t dmC64GetSubjectSize(const int subject, const DMC64ImageCommonFormat *fmt);
c5a46cb4cce5 Change DMC64ImageFormat parameter of dmC64GetSubjectSize() and
Matti Hamalainen <ccr@tnsp.org>
parents: 1932
diff changeset
340 size_t dmC64GetOpSubjectSize(const DMC64EncDecOp *op, const DMC64ImageCommonFormat *fmt);
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
341
1442
3773281491c9 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 1426
diff changeset
342
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
343 int dmC64DecodeGenericBMP(DMC64Image *img, const DMGrowBuf *buf, const DMC64ImageFormat *fmt);
1499
32640e1934d5 Simplify some encoding bits.
Matti Hamalainen <ccr@tnsp.org>
parents: 1495
diff changeset
344 int dmC64EncodeGenericBMP(const BOOL allocate, DMGrowBuf *buf, const DMC64Image *img, const DMC64ImageFormat *fmt);
537
32d9e67da189 Rename generic probing function to match the style of other lib64gfx functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 534
diff changeset
345
1931
410679d2fe8a "Enable" the image->c64 bitmap conversion path in gfxconv. It does not work
Matti Hamalainen <ccr@tnsp.org>
parents: 1923
diff changeset
346 int dmC64ConvertBMP2Image(DMImage **pdst, const DMC64Image *src, const DMC64ImageFormat *fmt, const DMC64ImageConvSpec *spec);
410679d2fe8a "Enable" the image->c64 bitmap conversion path in gfxconv. It does not work
Matti Hamalainen <ccr@tnsp.org>
parents: 1923
diff changeset
347 int dmC64ConvertImage2BMP(DMC64Image **pdst, const DMImage *src, const DMC64ImageFormat *fmt, const DMC64ImageConvSpec *spec);
1446
948b32bd67ef Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 1442
diff changeset
348
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
349 int dmC64DecodeBMP(DMC64Image **img, const DMGrowBuf *buf, const size_t probeOffs, const size_t loadOffs, const DMC64ImageFormat **fmt, const DMC64ImageFormat *forced);
1467
32203356c652 Add some new functions that are mostly just stubs and not working tho.
Matti Hamalainen <ccr@tnsp.org>
parents: 1465
diff changeset
350 int dmC64EncodeBMP(DMGrowBuf *buf, const DMC64Image *img, const DMC64ImageFormat *fmt);
419
936bc27a79d6 Modularize some functions to lib64gfx, fix bitmap -> image conversion,
Matti Hamalainen <ccr@tnsp.org>
parents: 418
diff changeset
351
1931
410679d2fe8a "Enable" the image->c64 bitmap conversion path in gfxconv. It does not work
Matti Hamalainen <ccr@tnsp.org>
parents: 1923
diff changeset
352 int dmC64ConvertGenericBMP2Image(DMImage *dst, const DMC64Image *src, const DMC64ImageFormat *fmt, const DMC64ImageConvSpec *spec);
410679d2fe8a "Enable" the image->c64 bitmap conversion path in gfxconv. It does not work
Matti Hamalainen <ccr@tnsp.org>
parents: 1923
diff changeset
353 int dmC64ConvertGenericImage2BMP(DMC64Image *dst, const DMImage *src, const DMC64ImageFormat *fmt, const DMC64ImageConvSpec *spec);
1446
948b32bd67ef Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 1442
diff changeset
354
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
355 void dmGenericRLEAnalyze(const DMGrowBuf *buf, DMCompParams *cfg);
1503
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
356
1713
0a9110b4d036 Add few RLE helper functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1711
diff changeset
357 void dmSetupRLEBuffers(DMGrowBuf *dst, DMGrowBuf *src, const DMCompParams *cfg);
0a9110b4d036 Add few RLE helper functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1711
diff changeset
358 void dmFinishRLEBuffers(DMGrowBuf *dst, DMGrowBuf *src, const DMCompParams *cfg);
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
Matti Hamalainen <ccr@tnsp.org>
parents: 1774
diff changeset
359
1713
0a9110b4d036 Add few RLE helper functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1711
diff changeset
360 int dmGenericRLEOutputRun(DMGrowBuf *dst, const DMCompParams *cfg, const Uint8 data, const unsigned int count);
1719
8f47bd264458 Make dmEncodeGenericRLESequence() a public function.
Matti Hamalainen <ccr@tnsp.org>
parents: 1713
diff changeset
361 int dmEncodeGenericRLESequence(DMGrowBuf *dst, const Uint8 data, const unsigned int count, const DMCompParams *cfg);
8f47bd264458 Make dmEncodeGenericRLESequence() a public function.
Matti Hamalainen <ccr@tnsp.org>
parents: 1713
diff changeset
362
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
363 int dmDecodeGenericRLE(DMGrowBuf *dst, const DMGrowBuf *src, const DMCompParams *cfg);
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
364 int dmDecodeGenericRLEAlloc(DMGrowBuf *dst, const DMGrowBuf *src, const DMCompParams *cfg);
1503
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
365
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
366 int dmEncodeGenericRLE(DMGrowBuf *dst, const DMGrowBuf *src, const DMCompParams *cfg);
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
367 int dmEncodeGenericRLEAlloc(DMGrowBuf *dst, const DMGrowBuf *src, const DMCompParams *cfg);
1503
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
368
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
369
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
370 //
2129
2129d4ac6f45 Refactor c64 image rendering completely to be more flexible.
Matti Hamalainen <ccr@tnsp.org>
parents: 2125
diff changeset
371 // Macros for defining variables used in getpixel functions
2129d4ac6f45 Refactor c64 image rendering completely to be more flexible.
Matti Hamalainen <ccr@tnsp.org>
parents: 2125
diff changeset
372 //
2129d4ac6f45 Refactor c64 image rendering completely to be more flexible.
Matti Hamalainen <ccr@tnsp.org>
parents: 2125
diff changeset
373 #define DM_C64_GENERIC_SC_PIXEL_DEFS(ximg) \
2129d4ac6f45 Refactor c64 image rendering completely to be more flexible.
Matti Hamalainen <ccr@tnsp.org>
parents: 2125
diff changeset
374 const int \
2129d4ac6f45 Refactor c64 image rendering completely to be more flexible.
Matti Hamalainen <ccr@tnsp.org>
parents: 2125
diff changeset
375 x = rasterX / 8, \
2129d4ac6f45 Refactor c64 image rendering completely to be more flexible.
Matti Hamalainen <ccr@tnsp.org>
parents: 2125
diff changeset
376 y = rasterY / 8, \
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377 yoffs = y * ximg->fmt->chWidth, \
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378 bmoffs = yoffs * 8 + (rasterY & 7) + (x * 8), \
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379 scroffs = yoffs + x, \
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380 vshift = 7 - (rasterX & 7);
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381
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382
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383 #define DM_C64_GENERIC_MC_PIXEL_DEFS(ximg) \
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384 const int \
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385 x = rasterX / 4, \
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386 y = rasterY / 8, \
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387 yoffs = y * (ximg)->fmt->chWidth, \
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388 bmoffs = yoffs * 8 + (rasterY & 7) + (x * 8), \
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389 scroffs = yoffs + x, \
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390 vshift = 6 - ((rasterX * 2) & 6);
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391
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392
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393 //
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394 // Inline helper functions for pixel format decoding
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395 //
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396 static inline int dmC64GetGenericSCPixel(Uint8 *col,
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397 const DMC64Image *img, const int bmoffs, const int scroffs,
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398 const int vshift, const int vbank, const int bitmap)
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399 {
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400 if ((img->bitmap[bitmap].data[bmoffs] >> vshift) & 1)
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401 *col = img->screen[vbank].data[scroffs] >> 4;
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402 else
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403 *col = img->screen[vbank].data[scroffs] & 15;
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404
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405 return DMERR_OK;
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406 }
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407
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408
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409 static inline int dmC64GetGenericMCPixel(Uint8 *col,
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410 const DMC64Image *img, const int bmoffs, const int scroffs,
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411 const int vshift, const int vbank, const int bitmap,
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412 const int cbank, const int bgcolor)
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413 {
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414 switch ((img->bitmap[bitmap].data[bmoffs] >> vshift) & 3)
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415 {
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416 case 0: *col = bgcolor; break;
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417 case 1: *col = img->screen[vbank].data[scroffs] >> 4; break;
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418 case 2: *col = img->screen[vbank].data[scroffs] & 15; break;
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419 default: *col = img->color[cbank].data[scroffs] & 15; break;
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420 }
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421
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422 return DMERR_OK;
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423 }
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424
435
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425
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426 static inline const DMC64EncDecOp * fmtGetEncDecOp(const DMC64ImageFormat *fmt, const int index)
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427 {
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428 return &fmt->format->encdecOps[index];
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429 }
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430
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431
435
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432 #ifdef __cplusplus
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433 }
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434 #endif
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435
407
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436 #endif // LIB64GFX_H