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annotate tools/lib64gfx.h @ 921:2454ddb7363f

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Add constant for max number of enc/dec ops in C64 image format struct and check the specified amount against that.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 25 Feb 2015 14:19:46 +0200
parents 9be156fa4b9d
children 658bf4c452d0
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1 /*
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2 * Functions for reading and converting various restricted
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3 * C64/etc and/or indexed/paletted graphics formats.
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4 * Programmed and designed by Matti 'ccr' Hamalainen
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5 * (C) Copyright 2012-2015 Tecnic Software productions (TNSP)
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6 *
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7 * Please read file 'COPYING' for information on license and distribution.
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8 */
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9 #ifndef LIB64GFX_H
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10 #define LIB64GFX_H 1
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11
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12 #include "libgfx.h"
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13
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14 #ifdef __cplusplus
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15 extern "C" {
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16 #endif
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17
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18
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19 // Bitmap constants
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20 #define C64_SCR_WIDTH 320
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21 #define C64_SCR_HEIGHT 200
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22 #define C64_SCR_CH_WIDTH (C64_SCR_WIDTH/8)
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23 #define C64_SCR_CH_HEIGHT (C64_SCR_HEIGHT/8)
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24 #define C64_SCR_COLOR_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT)
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25 #define C64_SCR_SCREEN_SIZE (C64_SCR_CH_WIDTH * C64_SCR_CH_HEIGHT)
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26 #define C64_SCR_BITMAP_SIZE (C64_SCR_WIDTH * C64_SCR_HEIGHT/8)
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27 #define C64_SCR_EXTRADATA 1024
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28 #define C64_SCR_MAX_BANK 8
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29
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30 // C64 video screen pixel aspect ratio on PAL
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31 #define C64_SCR_PAR_XY (0.9365f)
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32
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33 // Sprite constants
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34 #define C64_SPR_WIDTH 3 // bytes
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35 #define C64_SPR_HEIGHT 21 // lines
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36 #define C64_SPR_WIDTH_PX (8 * C64_SPR_WIDTH)
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37 #define C64_SPR_SIZE ((C64_SPR_WIDTH * C64_SPR_HEIGHT) + 1)
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38
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39 // Character constants
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40 #define C64_CHR_WIDTH 1 // bytes
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41 #define C64_CHR_HEIGHT 8 // lines
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42 #define C64_CHR_WIDTH_PX (8 * C64_CHR_WIDTH)
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43 #define C64_CHR_SIZE (C64_CHR_WIDTH * C64_CHR_HEIGHT)
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44
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45 // Etc.
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46 #define C64_RAM_SIZE (64*1024)
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47 #define C64_NCOLORS 16
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48 #define C64_MAX_COLORS 16
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49 #define C64_VIDBANK_SIZE (16*1024)
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50 #define C64_MAX_SPRITES (C64_VIDBANK_SIZE / C64_SPR_SIZE)
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51 #define C64_MAX_CHARS 256
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52
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53 // Different supported C64 bitmap "modes"
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54 enum
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55 {
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56 D64_FMT_HIRES = 0x0000,
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57 D64_FMT_MC = 0x0001,
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58 D64_FMT_ILACE = 0x0002,
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59 D64_FMT_FLI = 0x0004,
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60 D64_FMT_CHAR = 0x0008,
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61
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62 D64_FMT_MODE_MASK = 0x000f,
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63
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64 };
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65
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66 enum
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67 {
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68 D64_FLI_2BANK,
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69 D64_FLI_4BANK,
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70 D64_FLI_8BANK,
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71 };
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72
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73 enum
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74 {
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75 D64_ILACE_COLOR,
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76 D64_ILACE_RES,
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77 };
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78
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79 enum
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80 {
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81 D64_CHCFG_SCREEN,
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82 D64_CHCFG_LINEAR = 1,
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83 };
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84
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86 typedef struct
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87 {
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88 BOOL multicolor, xexpand, yexpand;
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89 int color, xc, yc;
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90 Uint8 data[C64_SPR_HEIGHT][C64_SPR_WIDTH];
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91 } DMC64Sprite;
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92
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93 enum
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94 {
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95 D64_CHR_GLOBAL, // use font-global setting
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96 D64_CHR_MULTICOLOR, // character is multicolor
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97 D64_CHR_HIRES,
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98 };
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99
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100 enum
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101 {
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102 DC_D020,
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103 DC_BGCOL,
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104 DC_D021,
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105 DC_D022,
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106 DC_D023,
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107 DC_D024,
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108 };
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109
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110 typedef struct
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111 {
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112 int mode, color;
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113 Uint8 data[C64_CHR_HEIGHT];
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114 } DMC64Char;
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115
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116
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117 typedef struct
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118 {
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119 BOOL multicolor;
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120 int colbg, color, col1, col2;
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121 int nglyphs;
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122 DMC64Char *glyphs;
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123 } DMC64Font;
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124
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125
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126
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127 typedef struct
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128 {
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129 int type, // Image type (D64_FMT_*)
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130 fliType, // FLI type (if FLI used)
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131 laceType, // Interlace type (D64_ILACE_*)
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132 laceBank1,
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133 laceBank2;
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134
915
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135 Uint8
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136 color[C64_SCR_MAX_BANK][C64_SCR_COLOR_SIZE],
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137 bitmap[C64_SCR_MAX_BANK][C64_SCR_BITMAP_SIZE],
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138 screen[C64_SCR_MAX_BANK][C64_SCR_SCREEN_SIZE],
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139 extradata[C64_SCR_EXTRADATA],
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140 d020, bgcolor, d022, d023, d024;
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141
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142 Uint8 charmem[C64_MAX_CHARS][C64_CHR_HEIGHT * C64_CHR_WIDTH];
407
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143 DMC64Sprite sprites[C64_MAX_SPRITES];
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144 } DMC64Image;
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145
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146
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147 enum
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148 {
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149 DT_COLOR_RAM,
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150 DT_BITMAP,
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151 DT_SCREEN_RAM,
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152 DT_COLOR_REG,
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153 DT_COLOR_SET,
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154 DT_EXTRADATA,
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3985f596ece5 Cosmetics.
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155
510
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156 DT_DEC_FUNCTION,
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157 DT_ENC_FUNCTION,
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158
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159 DT_CHAR_DATA,
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160 DT_CHAR_CONFIG,
407
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161
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162 DT_LAST,
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163 };
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164
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165
510
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166 typedef struct _DMC64EncDecOp
407
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167 {
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168 int type;
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169 size_t offs;
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170 int bank;
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171 size_t size;
510
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172 BOOL (*decfunction)(DMC64Image *img, const struct _DMC64EncDecOp *op, const Uint8 *buf, const size_t len);
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173 BOOL (*encfunction)(const struct _DMC64EncDecOp *op, Uint8 **buf, size_t *len, const DMC64Image *img);
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174 } DMC64EncDecOp;
407
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175
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176
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177 #define D64_MAX_ENCDEC_OPS 16
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178
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179
407
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180 typedef struct _DMC64ImageFormat
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181 {
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182 int type;
534
fbfdc9e4fe2b Begin preparations for improved bitmap conversion support. Breaks lib64gfx API.
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183 char *fext;
407
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184 char *name;
511
4cdcaeb68b54 Collapse most of the probing functions into one generic probe, as they only
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185 size_t addr; // Loading address (0 if no loading address)
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186 size_t size; // Size, including loading address. Only used in encoding, if even there (0 if no static size)
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187 int (*probe)(const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt);
410
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188 int (*decode)(DMC64Image *img, const Uint8 *buf, const size_t len, const struct _DMC64ImageFormat *fmt);
507
272e64259fde Add function pointers for encoding and convertTo/convertFrom to the
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189 int (*encode)(DMC64Image *img, Uint8 **buf, size_t *len, const struct _DMC64ImageFormat *fmt);
556
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190 int (*convertFrom)(DMImage *, const DMC64Image *, const BOOL doubleMC);
507
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191 int (*convertTo)(DMImage *, DMC64Image *);
407
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192
515
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193 int nencdecOps;
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194 DMC64EncDecOp encdecOps[D64_MAX_ENCDEC_OPS];
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195 } DMC64ImageFormat;
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196
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197
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198 extern const size_t dmC64DefaultSizes[DT_LAST];
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199 extern DMColor dmC64Palette[C64_NCOLORS];
516
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200 extern const DMC64ImageFormat dmC64ImageFormats[];
407
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201 extern const int ndmC64ImageFormats;
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202
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203
530
5b37a2e427b7 Greatly simplify and also improve the multicolor/hires/lace bitmap->image
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204 char * dmC64GetImageTypeString(char *buf, const size_t len, const int type);
827
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205 int dmC64ConvertCSDataToImage(DMImage *img, int xoffs, int yoffs, const Uint8 *inBuf, int width, int height, BOOL multicolor, int *colors);
537
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206
410
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207 int dmC64DecodeGenericBMP(DMC64Image *img, const Uint8 *buf, const size_t len, const DMC64ImageFormat *fmt);
545
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208 int dmC64EncodeGenericBMP(Uint8 **pbuf, size_t *plen, const DMC64Image *img, const DMC64ImageFormat *fmt);
556
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209 int dmC64ConvertGenericBMP2Image(DMImage *dst, const DMC64Image *src, const BOOL doubleMC);
537
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210
556
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211 int dmC64ConvertBMP2Image(DMImage **pdst, const DMC64Image *src, const DMC64ImageFormat *fmt, const BOOL doubleMC);
537
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212 int dmC64ProbeBMP(const Uint8 *buf, const size_t len, const DMC64ImageFormat **fmt);
516
6f141f760c54 Constify.
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213 int dmC64DecodeBMP(DMC64Image *img, const Uint8 *buf, const size_t len, const size_t probeOffs, const size_t loadOffs, const DMC64ImageFormat **fmt, const DMC64ImageFormat *forced);
419
936bc27a79d6 Modularize some functions to lib64gfx, fix bitmap -> image conversion,
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214
435
e4a3f183e463 Modularize some more.
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215
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216 #ifdef __cplusplus
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217 }
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218 #endif
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219
407
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220 #endif // LIB64GFX_H