annotate tools/lib64gfx.h @ 1932:10e82be38b8b

The sprites sub-structure is not yet used, so comment it out.
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 28 Jun 2018 18:39:26 +0300
parents 410679d2fe8a
children c5a46cb4cce5
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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 2012-2018 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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19
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20 // Bitmap constants
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21 #define C64_SCR_WIDTH 320
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22 #define C64_SCR_HEIGHT 200
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23 #define C64_SCR_CH_WIDTH (C64_SCR_WIDTH/8)
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24 #define C64_SCR_CH_HEIGHT (C64_SCR_HEIGHT/8)
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25 #define C64_MAX_EXTRA_DATA 64
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26
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27 // C64 video screen pixel aspect ratio on PAL
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28 #define C64_SCR_PAR_XY (0.9365f)
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29
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30 // Sprite constants
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31 #define C64_SPR_WIDTH_PX 24
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32 #define C64_SPR_HEIGHT_PX 21
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33 #define C64_SPR_WIDTH_UT (C64_SPR_WIDTH_PX / 8) // bytes
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34 #define C64_SPR_HEIGHT_UT C64_SPR_HEIGHT_PX
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35 #define C64_SPR_SIZE ((C64_SPR_WIDTH_UT * C64_SPR_HEIGHT_UT) + 1)
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36
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37 // Character constants
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38 #define C64_CHR_WIDTH_PX 8
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39 #define C64_CHR_HEIGHT_PX 8
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40 #define C64_CHR_WIDTH_UT 1 // bytes
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41 #define C64_CHR_HEIGHT_UT 8 // lines
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42 #define C64_CHR_SIZE (C64_CHR_WIDTH_UT * C64_CHR_HEIGHT_UT)
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43
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44 // Etc.
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45 #define C64_NCOLORS 16
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46 #define C64_VIDBANK_SIZE (16*1024)
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47 #define C64_MAX_SPRITES 1024
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48 #define C64_MAX_CHARS 256
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49
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50
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51 // Different supported flags/modes
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52 enum
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53 {
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54 D64_FMT_HIRES = 0x0000, // Hi-res
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55 D64_FMT_MC = 0x0001, // MultiColor
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56 D64_FMT_ILACE = 0x0002, // Interlace
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57 D64_FMT_FLI = 0x0004, // FLI
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58 D64_FMT_CHAR = 0x0008, // Character mode
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59 D64_FMT_BORDER = 0x0010, // Uses border area
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60 };
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61
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62
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63 // Different types of interlace
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64 enum
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65 {
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66 D64_ILACE_NONE = 0x0000, // Not set (invalid for interlaced images)
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67 D64_ILACE_RES = 0x0001, // Interlace doubles resolution
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68 D64_ILACE_COLOR = 0x0002, // Uses color mixing
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69 };
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70
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71
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72 // Charmode screen memory configuration
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73 enum
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74 {
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75 D64_CHCFG_SCREEN, // Use screen memory
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76 D64_CHCFG_LINEAR = 1, // Generate linear pattern so that first line
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77 // of chars is 0-39, second 40-79, up to 255.
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78 };
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79
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80
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81 // Image <-> bitmap conversion dithering
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82 enum
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83 {
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84 D64_DITH_NONE = 0, // No dithering
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85 };
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88 // Different enc/dec operation types (op->type)
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89 enum
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90 {
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91 DO_COPY, // Perform copy between memory (from/to offset) and subject
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92 DO_SET_MEM, // Set subject value or fill subject memory area to byte value from offset
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93 DO_SET_OP, // Like above but value from op->offs field instead
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95 DO_SET_MEM_HI, // Copy one byte value like DO_SET_MEM, but high nibble only
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96 DO_SET_MEM_LO, // Like above, but low nibble
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98 DO_FUNC, // Execute specified decoding / encoding function
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99
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100 DO_CHAR_CFG, // Set character mode configuration
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101
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102 DO_LAST, // Last opcode, end processing
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103 };
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106 // "Subjects" of operations (op->subject)
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107 enum
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108 {
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109 DS_COLOR_RAM,
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110 DS_BITMAP_RAM,
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111 DS_SCREEN_RAM,
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112 DS_EXTRA_DATA,
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113 DS_CHAR_DATA,
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114
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115 DS_D020,
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116 DS_BGCOL,
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117 DS_D021,
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118 DS_D022,
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119 DS_D023,
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120 DS_D024,
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122 DS_LAST
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123 };
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126 typedef struct
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127 {
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128 int dither; // Dither mode (D64_DITH_*)
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129 BOOL aspect; // Correct pixel aspect ratio?
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130 } DMC64ImageConvSpec;
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131
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132
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133 typedef struct
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134 {
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135 Uint8 *data;
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136 size_t size;
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137 } DMC64MemBlock;
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138
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139
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140 typedef struct
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141 {
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142 BOOL multicolor, xexpand, yexpand;
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143 int color, xc, yc;
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144 Uint8 data[C64_SPR_HEIGHT_UT][C64_SPR_WIDTH_UT];
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145 } DMC64Sprite;
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146
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147
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148 typedef struct _DMC64Image
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149 {
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150 int type, // Image type (D64_FMT_*)
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151 laceType, // Interlace type (D64_ILACE_*)
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152 nbanks;
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153
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154 int width, height; // Width and height in pixels
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155 int chWidth, chHeight; // Width and height in charblocks
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156
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157 // Bitmaps, color RAM, screen, etc. blocks * nbanks
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158 // Not all of them may be allocated
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159 DMC64MemBlock
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160 *color,
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161 *bitmap,
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162 *screen,
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163 *charData;
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164
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165 // Other standard colours
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166 Uint8 d020, bgcolor, d022, d023, d024;
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167
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168 // Extra data areas used by some formats,
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169 // for example raster colours might be stored
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170 DMC64MemBlock extraData[C64_MAX_EXTRA_DATA];
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171
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172 //DMC64Sprite sprites[C64_MAX_SPRITES];
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173 } DMC64Image;
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174
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175
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176 typedef Uint8 (*DMC64GetPixelFunc)(
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177 const DMC64Image *img, const int bmoffs, const int scroffs,
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178 const int vshift, const int vbitmap, const int rasterX, const int rasterY);
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179
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180 #define D64_MAX_ENCDEC_OPS 64
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181
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182
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183 typedef struct _DMC64ImageFormat DMC64ImageFormat;
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184
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185
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186 typedef struct _DMC64EncDecOp
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187 {
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188 int type; // Operation type (DO_*)
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189 int subject; // Operation "subject" (DS_*)
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190
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191 size_t offs; // Offset in "memory"
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192 int bank; // Bank number or extradata index
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193 size_t size; // Size of data (0 for "default")
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194 size_t offs2; // Offset in data-block
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195
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196 BOOL (*decFunction)(DMC64Image *img, const struct _DMC64EncDecOp *op, const DMGrowBuf *buf, const DMC64ImageFormat *fmt);
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197 BOOL (*encFunction)(const struct _DMC64EncDecOp *op, DMGrowBuf *buf, const DMC64Image *img, const DMC64ImageFormat *fmt);
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198 } DMC64EncDecOp;
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199
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200
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201 typedef DMC64EncDecOp DMC64EncDecOpList[D64_MAX_ENCDEC_OPS];
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202
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203
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204 typedef struct
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205 {
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206 int type; // Type flags, see D64_FMT_*
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207 int width, height; // Width and height in pixels
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208 int chWidth, chHeight; // Width and height in charblocks
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209
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210 int (*convertFrom)(DMImage *, const DMC64Image *, const DMC64ImageFormat *fmt, const DMC64ImageConvSpec *spec);
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211 int (*convertTo)(DMC64Image *, const DMImage *, const DMC64ImageFormat *fmt, const DMC64ImageConvSpec *spec);
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212
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213 DMC64GetPixelFunc getPixel;
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214
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215 DMC64EncDecOpList encdecOps;
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216 } DMC64ImageCommonFormat;
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217
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218
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219 typedef struct _DMC64ImageFormat
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220 {
922
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221 char *fext; // Filename extension
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222 char *name; // Format description/name
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223
511
4cdcaeb68b54 Collapse most of the probing functions into one generic probe, as they only
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224 size_t addr; // Loading address (0 if no loading address)
1495
acb607e2c350 Clarify a comment.
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225 size_t size; // Size, including loading address. Only used in probing and encoding.
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732787cccca8 Add dimension (w/h) information fields to C64 image format struct.
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226
1545
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227 int flags; // DM_FMT_* flags, see libgfx.h
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228
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229 int (*probe)(const DMGrowBuf *buf, const DMC64ImageFormat *fmt);
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230
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231 int (*decode)(DMC64Image *img, const DMGrowBuf *buf, const DMC64ImageFormat *fmt);
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232 int (*encode)(DMGrowBuf *buf, const DMC64Image *img, const DMC64ImageFormat *fmt);
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233
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234 DMC64ImageCommonFormat formatDef, *format;
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235 } DMC64ImageFormat;
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236
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237
1637
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238 //
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239 // Compression types and flags
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240 //
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241 enum
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242 {
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243 DM_COMP_RLE_MARKER = 1, // RLE with a separate marker byte
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244 DM_COMP_RLE_MASK = 2, // RLE that has marker bits and lower part acts as run length
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245 };
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246
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247 enum
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248 {
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249 DM_RLE_BYTE_RUNS = 0x0001, // Uses one-byte run lengths
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250 DM_RLE_WORD_RUNS = 0x0002, // Uses two-byte (word) run lengths
1825
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parents: 1822
diff changeset
251 DM_RLE_RUNS_MASK = 0x0003,
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diff changeset
252
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253 DM_RLE_ORDER_1 = 0x0000, // Order: <marker>, <count/run length>, <data>
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254 DM_RLE_ORDER_2 = 0x0010, // Order: <marker>, <data>, <count/run length>
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diff changeset
255 DM_RLE_ORDER_MASK = 0x00f0,
1707
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parents: 1668
diff changeset
256
1786
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diff changeset
257 DM_RLE_BACKWARDS_INPUT = 0x0100, // Input is read backwards
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parents: 1783
diff changeset
258 DM_RLE_BACKWARDS_OUTPUT = 0x0200, // Output is written backwards
52e90130453b Add descriptive comments to some of RLE decoder flags that were missing "documentation".
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parents: 1783
diff changeset
259 DM_RLE_ZERO_COUNT_MAX = 0x0400, // Zero "count" / run length value is max run (2^8, 2^16)
1720
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
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parents: 1719
diff changeset
260
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1719
diff changeset
261 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
262 DM_OUT_CROP_START = 0x1000,
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1719
diff changeset
263 DM_OUT_CROP_END = 0x2000,
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1719
diff changeset
264 DM_OUT_CROP_MASK = 0xf000,
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
265 };
1505
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parents: 1503
diff changeset
266
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
Matti Hamalainen <ccr@tnsp.org>
parents: 1503
diff changeset
267
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
Matti Hamalainen <ccr@tnsp.org>
parents: 1503
diff changeset
268 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
269 {
1711
4fd94bf558b3 Add function name field to DMCompParams struct and set it in places where we use DMCompParams.
Matti Hamalainen <ccr@tnsp.org>
parents: 1709
diff changeset
270 char *func;
1505
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Matti Hamalainen <ccr@tnsp.org>
parents: 1503
diff changeset
271 int type;
1650
9233da9de92c Refactor RLE encoding a bit, and add support for 16bit run counts and make things more configurable.
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parents: 1647
diff changeset
272 int flags;
1720
77a4d8fab5cc Add output buffer cropping to dmFinishRLEBuffers() and the flags and fields to DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1719
diff changeset
273 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
274
1650
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parents: 1647
diff changeset
275 Uint8
1660
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parents: 1650
diff changeset
276 // DM_COMP_RLE_MARKER mode
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
277 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
278 rleMarkerW, // Marker byte for word length runs (if DM_RLE_WORD_RUNS used)
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
279
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
280 // DM_COMP_RLE_MASK mode
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
281 rleMarkerBits,
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
282 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
283 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
284
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
285 unsigned int
1660
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parents: 1650
diff changeset
286 // Minimum and maximum run lengths
7555c8803529 More work on improving the generic RLE decoder/encoder.
Matti Hamalainen <ccr@tnsp.org>
parents: 1650
diff changeset
287 rleMinCountB,
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
288 rleMinCountW,
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
289 rleMaxCountB,
7555c8803529 More work on improving the generic RLE decoder/encoder.
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parents: 1650
diff changeset
290 rleMaxCountW;
1505
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parents: 1503
diff changeset
291 } DMCompParams;
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
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parents: 1503
diff changeset
292
3265175b24d2 Change the passing of RLE compression/decompression parameters to be in a dedicated struct.
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parents: 1503
diff changeset
293
1503
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
294 //
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
295 // Global variables
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
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parents: 1499
diff changeset
296 //
1426
4c7b456d7f0b Rename global dmC64Palette to dmDefaultC64Palette.
Matti Hamalainen <ccr@tnsp.org>
parents: 1380
diff changeset
297 extern DMColor dmDefaultC64Palette[C64_NCOLORS];
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
Matti Hamalainen <ccr@tnsp.org>
parents: 1774
diff changeset
298 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
299 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
300
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
301
1503
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parents: 1499
diff changeset
302 //
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
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parents: 1499
diff changeset
303 // Miscellaneous functions
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
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parents: 1499
diff changeset
304 //
1775
4e4d54135baf Refactor the c64 bitmap format definitions handling to be more flexible. Again.
Matti Hamalainen <ccr@tnsp.org>
parents: 1774
diff changeset
305 void dmC64InitializeFormats(void);
1780
5ea4713e9e0f Change c64 format probing API to use DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1775
diff changeset
306 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
307
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
308 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
309 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
310
1457
dcff9ac95d3f Add function to set DMImage's palette to default C64 palette and use it.
Matti Hamalainen <ccr@tnsp.org>
parents: 1456
diff changeset
311 void dmSetDefaultC64Palette(DMImage *img);
1732
07111a60cd4e Add dmSetMixedColorC64Palette() for setting a 256 entry "mixed color"
Matti Hamalainen <ccr@tnsp.org>
parents: 1726
diff changeset
312 BOOL dmSetMixedColorC64Palette(DMImage *img);
07111a60cd4e Add dmSetMixedColorC64Palette() for setting a 256 entry "mixed color"
Matti Hamalainen <ccr@tnsp.org>
parents: 1726
diff changeset
313
1780
5ea4713e9e0f Change c64 format probing API to use DMGrowBuf.
Matti Hamalainen <ccr@tnsp.org>
parents: 1775
diff changeset
314 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
315 int dmC64ImageGetNumBanks(const DMC64ImageFormat *fmt);
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
316
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
317 // 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
318 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
319 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
320 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
321
1378
c465860e44ed Make c64 image bank allocation dynamic.
Matti Hamalainen <ccr@tnsp.org>
parents: 1376
diff changeset
322 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
323 void dmC64ImageFree(DMC64Image *img);
2270d7f3af77 Refactor the DMC64Image handling to be more dynamic, and start
Matti Hamalainen <ccr@tnsp.org>
parents: 926
diff changeset
324
2270d7f3af77 Refactor the DMC64Image handling to be more dynamic, and start
Matti Hamalainen <ccr@tnsp.org>
parents: 926
diff changeset
325
1503
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
326 // Encoding and decoding of formats and images
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
327 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
328
1852
219417325036 Split dmC64GetOpMemBlockAndName() into dmC64GetOpMemBlock() and
Matti Hamalainen <ccr@tnsp.org>
parents: 1846
diff changeset
329 const char *dmC64GetOpSubjectName(const int subject);
219417325036 Split dmC64GetOpMemBlockAndName() into dmC64GetOpMemBlock() and
Matti Hamalainen <ccr@tnsp.org>
parents: 1846
diff changeset
330 void dmC64GetOpMemBlock(const DMC64Image *img, const int subject, const int bank, const DMC64MemBlock **blk);
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
331 int dmC64SanityCheckEncDecOp(const int i, const DMC64EncDecOp *op, const DMC64Image *img);
1916
34ba8e2d2dd7 Split dmC64GetOpSize() to dmC64GetSubjectSize() and dmC64GetOpSubjectSize().
Matti Hamalainen <ccr@tnsp.org>
parents: 1859
diff changeset
332
34ba8e2d2dd7 Split dmC64GetOpSize() to dmC64GetSubjectSize() and dmC64GetOpSubjectSize().
Matti Hamalainen <ccr@tnsp.org>
parents: 1859
diff changeset
333 size_t dmC64GetSubjectSize(const int subject, const DMC64ImageFormat *fmt);
34ba8e2d2dd7 Split dmC64GetOpSize() to dmC64GetSubjectSize() and dmC64GetOpSubjectSize().
Matti Hamalainen <ccr@tnsp.org>
parents: 1859
diff changeset
334 size_t dmC64GetOpSubjectSize(const DMC64EncDecOp *op, const DMC64ImageFormat *fmt);
1644
9d9a0e852b3d Reorder some functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1637
diff changeset
335
1442
3773281491c9 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 1426
diff changeset
336
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
337 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
338 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
339
1931
410679d2fe8a "Enable" the image->c64 bitmap conversion path in gfxconv. It does not work
Matti Hamalainen <ccr@tnsp.org>
parents: 1923
diff changeset
340 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
341 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
342
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
343 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
344 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
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 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
347 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
348
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
349 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
350
1713
0a9110b4d036 Add few RLE helper functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1711
diff changeset
351 void dmSetupRLEBuffers(DMGrowBuf *dst, DMGrowBuf *src, const DMCompParams *cfg);
0a9110b4d036 Add few RLE helper functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1711
diff changeset
352 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
353
1713
0a9110b4d036 Add few RLE helper functions.
Matti Hamalainen <ccr@tnsp.org>
parents: 1711
diff changeset
354 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
355 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
356
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
357 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
358 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
359
1707
a0986cfd6f9d More consistently use DMGrowBuf in the lib64gfx APIs, and implement
Matti Hamalainen <ccr@tnsp.org>
parents: 1668
diff changeset
360 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
361 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
362
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
363
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
364 //
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
365 // Inline helper functions for pixel format decoding
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
366 //
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
367 static inline Uint8 dmC64GetGenericSCPixel(
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
368 const DMC64Image *img, const int bmoffs, const int scroffs,
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
369 const int vshift, const int vbank, const int vbitmap, const int cbank)
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
370 {
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
371 (void) cbank;
1588
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
372 if ((img->bitmap[vbitmap].data[bmoffs] >> vshift) & 1)
ca087c0cc9c4 Refactor the c64 format memory handling a bit for more flexibility.
Matti Hamalainen <ccr@tnsp.org>
parents: 1586
diff changeset
373 return img->screen[vbank].data[scroffs] >> 4;
1503
c7b9ef56319b Factor all the c64 file format specific things into lib64fmt.c
Matti Hamalainen <ccr@tnsp.org>
parents: 1499
diff changeset
374 else
1588
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375 return img->screen[vbank].data[scroffs] & 15;
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376 }
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377
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378
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379 static inline Uint8 dmC64GetGenericMCPixel(
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380 const DMC64Image *img, const int bmoffs, const int scroffs,
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381 const int vshift, const int vbank, const int vbitmap, const int cbank, const int bgcolor)
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382 {
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383 switch ((img->bitmap[vbitmap].data[bmoffs] >> vshift) & 3)
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384 {
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385 case 0: return bgcolor;
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386 case 1: return img->screen[vbank].data[scroffs] >> 4;
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387 case 2: return img->screen[vbank].data[scroffs] & 15;
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388 default: return img->color[cbank].data[scroffs] & 15;
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389 }
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390 }
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391
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392
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393 static inline Uint8 fmtGetGenericSCPixel(
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394 const DMC64Image *img, const int bmoffs, const int scroffs,
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395 const int vshift, const int vbitmap, const int rasterX, const int rasterY)
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396 {
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397 (void) rasterX;
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398 (void) rasterY;
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399 return dmC64GetGenericSCPixel(img, bmoffs, scroffs, vshift, 0, vbitmap, 0);
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400 }
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401
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402
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403 static inline Uint8 fmtGetGenericMCPixel(
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404 const DMC64Image *img, const int bmoffs, const int scroffs,
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405 const int vshift, const int vbitmap, const int rasterX, const int rasterY)
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406 {
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407 (void) rasterX;
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408 (void) rasterY;
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409 return dmC64GetGenericMCPixel(img, bmoffs, scroffs, vshift, 0, vbitmap, 0, img->bgcolor);
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410 }
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411
435
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parents: 419
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412
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413 static inline const DMC64EncDecOp * fmtGetEncDecOp(const DMC64ImageFormat *fmt, const int index)
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414 {
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415 return &fmt->format->encdecOps[index];
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416 }
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417
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418
435
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419 #ifdef __cplusplus
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420 }
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421 #endif
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422
407
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423 #endif // LIB64GFX_H