2 Copyright (C) 1999-2007 id Software, Inc. and contributors.
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3 For a list of contributors, see the accompanying CONTRIBUTORS file.
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5 This file is part of GtkRadiant.
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7 GtkRadiant is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2 of the License, or
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10 (at your option) any later version.
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12 GtkRadiant is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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17 You should have received a copy of the GNU General Public License
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18 along with GtkRadiant; if not, write to the Free Software
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19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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25 * Copyright (C) 1991-1995, Thomas G. Lane.
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26 * This file is part of the Independent JPEG Group's software.
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27 * For conditions of distribution and use, see the accompanying README file.
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29 * This file defines the application interface for the JPEG library.
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30 * Most applications using the library need only include this file,
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31 * and perhaps jerror.h if they want to know the exact error codes.
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43 #if defined (__linux__) || defined (__APPLE__)
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50 #define boolean bool
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52 typedef int boolean;
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60 // JDC: stuff to make mac version compile
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61 #define boolean qboolean
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70 //#include "cmdlib.h"
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72 #include "windows.h"
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80 // TTimo: if LoadJPGBuff returns -1, *pic is the error message
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81 extern int LoadJPGBuff(unsigned char *fbuffer, int bufsize, unsigned char **pic, int *width, int *height );
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86 * First we include the configuration files that record how this
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87 * installation of the JPEG library is set up. jconfig.h can be
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88 * generated automatically for many systems. jmorecfg.h contains
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89 * manual configuration options that most people need not worry about.
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92 #ifndef JCONFIG_INCLUDED /* in case jinclude.h already did */
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93 #include "jpeg6/jconfig.h" /* widely used configuration options */
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95 #include "jpeg6/jmorecfg.h" /* seldom changed options */
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98 /* Version ID for the JPEG library.
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99 * Might be useful for tests like "#if JPEG_LIB_VERSION >= 60".
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102 #define JPEG_LIB_VERSION 60 /* Version 6 */
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105 /* Various constants determining the sizes of things.
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106 * All of these are specified by the JPEG standard, so don't change them
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107 * if you want to be compatible.
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110 #define DCTSIZE 8 /* The basic DCT block is 8x8 samples */
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111 #define DCTSIZE2 64 /* DCTSIZE squared; # of elements in a block */
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112 #define NUM_QUANT_TBLS 4 /* Quantization tables are numbered 0..3 */
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113 #define NUM_HUFF_TBLS 4 /* Huffman tables are numbered 0..3 */
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114 #define NUM_ARITH_TBLS 16 /* Arith-coding tables are numbered 0..15 */
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115 #define MAX_COMPS_IN_SCAN 4 /* JPEG limit on # of components in one scan */
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116 #define MAX_SAMP_FACTOR 4 /* JPEG limit on sampling factors */
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117 /* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard;
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118 * the PostScript DCT filter can emit files with many more than 10 blocks/MCU.
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119 * If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU
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120 * to handle it. We even let you do this from the jconfig.h file. However,
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121 * we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe
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122 * sometimes emits noncompliant files doesn't mean you should too.
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124 #define C_MAX_BLOCKS_IN_MCU 10 /* compressor's limit on blocks per MCU */
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125 #ifndef D_MAX_BLOCKS_IN_MCU
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126 #define D_MAX_BLOCKS_IN_MCU 10 /* decompressor's limit on blocks per MCU */
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130 /* This macro is used to declare a "method", that is, a function pointer.
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131 * We want to supply prototype parameters if the compiler can cope.
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132 * Note that the arglist parameter must be parenthesized!
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135 #ifdef HAVE_PROTOTYPES
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136 #define JMETHOD(type,methodname,arglist) type (*methodname) arglist
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138 #define JMETHOD(type,methodname,arglist) type (*methodname) ()
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142 /* Data structures for images (arrays of samples and of DCT coefficients).
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143 * On 80x86 machines, the image arrays are too big for near pointers,
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144 * but the pointer arrays can fit in near memory.
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147 typedef JSAMPLE FAR *JSAMPROW; /* ptr to one image row of pixel samples. */
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148 typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */
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149 typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */
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151 typedef JCOEF JBLOCK[DCTSIZE2]; /* one block of coefficients */
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152 typedef JBLOCK FAR *JBLOCKROW; /* pointer to one row of coefficient blocks */
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153 typedef JBLOCKROW *JBLOCKARRAY; /* a 2-D array of coefficient blocks */
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154 typedef JBLOCKARRAY *JBLOCKIMAGE; /* a 3-D array of coefficient blocks */
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156 typedef JCOEF FAR *JCOEFPTR; /* useful in a couple of places */
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159 /* Types for JPEG compression parameters and working tables. */
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162 /* DCT coefficient quantization tables. */
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165 /* This field directly represents the contents of a JPEG DQT marker.
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166 * Note: the values are always given in zigzag order.
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168 UINT16 quantval[DCTSIZE2]; /* quantization step for each coefficient */
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169 /* This field is used only during compression. It's initialized FALSE when
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170 * the table is created, and set TRUE when it's been output to the file.
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171 * You could suppress output of a table by setting this to TRUE.
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172 * (See jpeg_suppress_tables for an example.)
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174 boolean sent_table; /* TRUE when table has been output */
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178 /* Huffman coding tables. */
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181 /* These two fields directly represent the contents of a JPEG DHT marker */
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182 UINT8 bits[17]; /* bits[k] = # of symbols with codes of */
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183 /* length k bits; bits[0] is unused */
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184 UINT8 huffval[256]; /* The symbols, in order of incr code length */
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185 /* This field is used only during compression. It's initialized FALSE when
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186 * the table is created, and set TRUE when it's been output to the file.
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187 * You could suppress output of a table by setting this to TRUE.
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188 * (See jpeg_suppress_tables for an example.)
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190 boolean sent_table; /* TRUE when table has been output */
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194 /* Basic info about one component (color channel). */
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197 /* These values are fixed over the whole image. */
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198 /* For compression, they must be supplied by parameter setup; */
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199 /* for decompression, they are read from the SOF marker. */
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200 int component_id; /* identifier for this component (0..255) */
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201 int component_index; /* its index in SOF or cinfo->comp_info[] */
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202 int h_samp_factor; /* horizontal sampling factor (1..4) */
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203 int v_samp_factor; /* vertical sampling factor (1..4) */
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204 int quant_tbl_no; /* quantization table selector (0..3) */
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205 /* These values may vary between scans. */
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206 /* For compression, they must be supplied by parameter setup; */
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207 /* for decompression, they are read from the SOS marker. */
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208 /* The decompressor output side may not use these variables. */
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209 int dc_tbl_no; /* DC entropy table selector (0..3) */
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210 int ac_tbl_no; /* AC entropy table selector (0..3) */
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212 /* Remaining fields should be treated as private by applications. */
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214 /* These values are computed during compression or decompression startup: */
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215 /* Component's size in DCT blocks.
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216 * Any dummy blocks added to complete an MCU are not counted; therefore
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217 * these values do not depend on whether a scan is interleaved or not.
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219 JDIMENSION width_in_blocks;
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220 JDIMENSION height_in_blocks;
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221 /* Size of a DCT block in samples. Always DCTSIZE for compression.
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222 * For decompression this is the size of the output from one DCT block,
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223 * reflecting any scaling we choose to apply during the IDCT step.
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224 * Values of 1,2,4,8 are likely to be supported. Note that different
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225 * components may receive different IDCT scalings.
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227 int DCT_scaled_size;
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228 /* The downsampled dimensions are the component's actual, unpadded number
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229 * of samples at the main buffer (preprocessing/compression interface), thus
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230 * downsampled_width = ceil(image_width * Hi/Hmax)
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231 * and similarly for height. For decompression, IDCT scaling is included, so
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232 * downsampled_width = ceil(image_width * Hi/Hmax * DCT_scaled_size/DCTSIZE)
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234 JDIMENSION downsampled_width; /* actual width in samples */
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235 JDIMENSION downsampled_height; /* actual height in samples */
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236 /* This flag is used only for decompression. In cases where some of the
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237 * components will be ignored (eg grayscale output from YCbCr image),
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238 * we can skip most computations for the unused components.
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240 boolean component_needed; /* do we need the value of this component? */
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242 /* These values are computed before starting a scan of the component. */
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243 /* The decompressor output side may not use these variables. */
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244 int MCU_width; /* number of blocks per MCU, horizontally */
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245 int MCU_height; /* number of blocks per MCU, vertically */
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246 int MCU_blocks; /* MCU_width * MCU_height */
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247 int MCU_sample_width; /* MCU width in samples, MCU_width*DCT_scaled_size */
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248 int last_col_width; /* # of non-dummy blocks across in last MCU */
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249 int last_row_height; /* # of non-dummy blocks down in last MCU */
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251 /* Saved quantization table for component; NULL if none yet saved.
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252 * See jdinput.c comments about the need for this information.
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253 * This field is not currently used by the compressor.
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255 JQUANT_TBL * quant_table;
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257 /* Private per-component storage for DCT or IDCT subsystem. */
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259 } jpeg_component_info;
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262 /* The script for encoding a multiple-scan file is an array of these: */
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265 int comps_in_scan; /* number of components encoded in this scan */
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266 int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */
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267 int Ss, Se; /* progressive JPEG spectral selection parms */
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268 int Ah, Al; /* progressive JPEG successive approx. parms */
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272 /* Known color spaces. */
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275 JCS_UNKNOWN, /* error/unspecified */
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276 JCS_GRAYSCALE, /* monochrome */
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277 JCS_RGB, /* red/green/blue */
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278 JCS_YCbCr, /* Y/Cb/Cr (also known as YUV) */
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279 JCS_CMYK, /* C/M/Y/K */
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280 JCS_YCCK /* Y/Cb/Cr/K */
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283 /* DCT/IDCT algorithm options. */
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286 JDCT_ISLOW, /* slow but accurate integer algorithm */
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287 JDCT_IFAST, /* faster, less accurate integer method */
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288 JDCT_FLOAT /* floating-point: accurate, fast on fast HW */
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291 #ifndef JDCT_DEFAULT /* may be overridden in jconfig.h */
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292 #define JDCT_DEFAULT JDCT_ISLOW
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294 #ifndef JDCT_FASTEST /* may be overridden in jconfig.h */
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295 #define JDCT_FASTEST JDCT_IFAST
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298 /* Dithering options for decompression. */
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301 JDITHER_NONE, /* no dithering */
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302 JDITHER_ORDERED, /* simple ordered dither */
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303 JDITHER_FS /* Floyd-Steinberg error diffusion dither */
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307 /* Common fields between JPEG compression and decompression master structs. */
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309 #define jpeg_common_fields \
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310 struct jpeg_error_mgr * err; /* Error handler module */\
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311 struct jpeg_memory_mgr * mem; /* Memory manager module */\
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312 struct jpeg_progress_mgr * progress; /* Progress monitor, or NULL if none */\
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313 boolean is_decompressor; /* so common code can tell which is which */\
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314 int global_state /* for checking call sequence validity */
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316 /* Routines that are to be used by both halves of the library are declared
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317 * to receive a pointer to this structure. There are no actual instances of
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318 * jpeg_common_struct, only of jpeg_compress_struct and jpeg_decompress_struct.
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320 struct jpeg_common_struct {
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321 jpeg_common_fields; /* Fields common to both master struct types */
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322 /* Additional fields follow in an actual jpeg_compress_struct or
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323 * jpeg_decompress_struct. All three structs must agree on these
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324 * initial fields! (This would be a lot cleaner in C++.)
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328 typedef struct jpeg_common_struct * j_common_ptr;
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329 typedef struct jpeg_compress_struct * j_compress_ptr;
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330 typedef struct jpeg_decompress_struct * j_decompress_ptr;
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333 /* Master record for a compression instance */
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335 struct jpeg_compress_struct {
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336 jpeg_common_fields; /* Fields shared with jpeg_decompress_struct */
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338 /* Destination for compressed data */
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339 struct jpeg_destination_mgr * dest;
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341 /* Description of source image --- these fields must be filled in by
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342 * outer application before starting compression. in_color_space must
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343 * be correct before you can even call jpeg_set_defaults().
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346 JDIMENSION image_width; /* input image width */
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347 JDIMENSION image_height; /* input image height */
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348 int input_components; /* # of color components in input image */
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349 J_COLOR_SPACE in_color_space; /* colorspace of input image */
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351 double input_gamma; /* image gamma of input image */
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353 /* Compression parameters --- these fields must be set before calling
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354 * jpeg_start_compress(). We recommend calling jpeg_set_defaults() to
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355 * initialize everything to reasonable defaults, then changing anything
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356 * the application specifically wants to change. That way you won't get
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357 * burnt when new parameters are added. Also note that there are several
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358 * helper routines to simplify changing parameters.
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361 int data_precision; /* bits of precision in image data */
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363 int num_components; /* # of color components in JPEG image */
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364 J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */
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366 jpeg_component_info * comp_info;
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367 /* comp_info[i] describes component that appears i'th in SOF */
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369 JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS];
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370 /* ptrs to coefficient quantization tables, or NULL if not defined */
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372 JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS];
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373 JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS];
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374 /* ptrs to Huffman coding tables, or NULL if not defined */
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376 UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */
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377 UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */
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378 UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */
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380 int num_scans; /* # of entries in scan_info array */
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381 const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */
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382 /* The default value of scan_info is NULL, which causes a single-scan
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383 * sequential JPEG file to be emitted. To create a multi-scan file,
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384 * set num_scans and scan_info to point to an array of scan definitions.
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387 boolean raw_data_in; /* TRUE=caller supplies downsampled data */
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388 boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */
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389 boolean optimize_coding; /* TRUE=optimize entropy encoding parms */
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390 boolean CCIR601_sampling; /* TRUE=first samples are cosited */
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391 int smoothing_factor; /* 1..100, or 0 for no input smoothing */
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392 J_DCT_METHOD dct_method; /* DCT algorithm selector */
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394 /* The restart interval can be specified in absolute MCUs by setting
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395 * restart_interval, or in MCU rows by setting restart_in_rows
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396 * (in which case the correct restart_interval will be figured
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399 unsigned int restart_interval; /* MCUs per restart, or 0 for no restart */
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400 int restart_in_rows; /* if > 0, MCU rows per restart interval */
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402 /* Parameters controlling emission of special markers. */
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404 boolean write_JFIF_header; /* should a JFIF marker be written? */
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405 /* These three values are not used by the JPEG code, merely copied */
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406 /* into the JFIF APP0 marker. density_unit can be 0 for unknown, */
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407 /* 1 for dots/inch, or 2 for dots/cm. Note that the pixel aspect */
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408 /* ratio is defined by X_density/Y_density even when density_unit=0. */
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409 UINT8 density_unit; /* JFIF code for pixel size units */
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410 UINT16 X_density; /* Horizontal pixel density */
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411 UINT16 Y_density; /* Vertical pixel density */
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412 boolean write_Adobe_marker; /* should an Adobe marker be written? */
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414 /* State variable: index of next scanline to be written to
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415 * jpeg_write_scanlines(). Application may use this to control its
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416 * processing loop, e.g., "while (next_scanline < image_height)".
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419 JDIMENSION next_scanline; /* 0 .. image_height-1 */
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421 /* Remaining fields are known throughout compressor, but generally
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422 * should not be touched by a surrounding application.
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426 * These fields are computed during compression startup
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428 boolean progressive_mode; /* TRUE if scan script uses progressive mode */
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429 int max_h_samp_factor; /* largest h_samp_factor */
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430 int max_v_samp_factor; /* largest v_samp_factor */
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432 JDIMENSION total_iMCU_rows; /* # of iMCU rows to be input to coef ctlr */
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433 /* The coefficient controller receives data in units of MCU rows as defined
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434 * for fully interleaved scans (whether the JPEG file is interleaved or not).
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435 * There are v_samp_factor * DCTSIZE sample rows of each component in an
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436 * "iMCU" (interleaved MCU) row.
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440 * These fields are valid during any one scan.
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441 * They describe the components and MCUs actually appearing in the scan.
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443 int comps_in_scan; /* # of JPEG components in this scan */
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444 jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN];
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445 /* *cur_comp_info[i] describes component that appears i'th in SOS */
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447 JDIMENSION MCUs_per_row; /* # of MCUs across the image */
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448 JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */
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450 int blocks_in_MCU; /* # of DCT blocks per MCU */
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451 int MCU_membership[C_MAX_BLOCKS_IN_MCU];
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452 /* MCU_membership[i] is index in cur_comp_info of component owning */
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453 /* i'th block in an MCU */
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455 int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */
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458 * Links to compression subobjects (methods and private variables of modules)
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460 struct jpeg_comp_master * master;
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461 struct jpeg_c_main_controller * main;
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462 struct jpeg_c_prep_controller * prep;
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463 struct jpeg_c_coef_controller * coef;
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464 struct jpeg_marker_writer * marker;
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465 struct jpeg_color_converter * cconvert;
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466 struct jpeg_downsampler * downsample;
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467 struct jpeg_forward_dct * fdct;
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468 struct jpeg_entropy_encoder * entropy;
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472 /* Master record for a decompression instance */
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474 struct jpeg_decompress_struct {
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475 jpeg_common_fields; /* Fields shared with jpeg_compress_struct */
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477 /* Source of compressed data */
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478 struct jpeg_source_mgr * src;
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480 /* Basic description of image --- filled in by jpeg_read_header(). */
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481 /* Application may inspect these values to decide how to process image. */
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483 JDIMENSION image_width; /* nominal image width (from SOF marker) */
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484 JDIMENSION image_height; /* nominal image height */
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485 int num_components; /* # of color components in JPEG image */
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486 J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */
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488 /* Decompression processing parameters --- these fields must be set before
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489 * calling jpeg_start_decompress(). Note that jpeg_read_header() initializes
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490 * them to default values.
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493 J_COLOR_SPACE out_color_space; /* colorspace for output */
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495 unsigned int scale_num, scale_denom; /* fraction by which to scale image */
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497 double output_gamma; /* image gamma wanted in output */
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499 boolean buffered_image; /* TRUE=multiple output passes */
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500 boolean raw_data_out; /* TRUE=downsampled data wanted */
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502 J_DCT_METHOD dct_method; /* IDCT algorithm selector */
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503 boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */
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504 boolean do_block_smoothing; /* TRUE=apply interblock smoothing */
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506 boolean quantize_colors; /* TRUE=colormapped output wanted */
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507 /* the following are ignored if not quantize_colors: */
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508 J_DITHER_MODE dither_mode; /* type of color dithering to use */
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509 boolean two_pass_quantize; /* TRUE=use two-pass color quantization */
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510 int desired_number_of_colors; /* max # colors to use in created colormap */
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511 /* these are significant only in buffered-image mode: */
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512 boolean enable_1pass_quant; /* enable future use of 1-pass quantizer */
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513 boolean enable_external_quant;/* enable future use of external colormap */
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514 boolean enable_2pass_quant; /* enable future use of 2-pass quantizer */
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516 /* Description of actual output image that will be returned to application.
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517 * These fields are computed by jpeg_start_decompress().
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518 * You can also use jpeg_calc_output_dimensions() to determine these values
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519 * in advance of calling jpeg_start_decompress().
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522 JDIMENSION output_width; /* scaled image width */
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523 JDIMENSION output_height; /* scaled image height */
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524 int out_color_components; /* # of color components in out_color_space */
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525 int output_components; /* # of color components returned */
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526 /* output_components is 1 (a colormap index) when quantizing colors;
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527 * otherwise it equals out_color_components.
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529 int rec_outbuf_height; /* min recommended height of scanline buffer */
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530 /* If the buffer passed to jpeg_read_scanlines() is less than this many rows
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531 * high, space and time will be wasted due to unnecessary data copying.
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532 * Usually rec_outbuf_height will be 1 or 2, at most 4.
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535 /* When quantizing colors, the output colormap is described by these fields.
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536 * The application can supply a colormap by setting colormap non-NULL before
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537 * calling jpeg_start_decompress; otherwise a colormap is created during
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538 * jpeg_start_decompress or jpeg_start_output.
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539 * The map has out_color_components rows and actual_number_of_colors columns.
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541 int actual_number_of_colors; /* number of entries in use */
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542 JSAMPARRAY colormap; /* The color map as a 2-D pixel array */
\r
544 /* State variables: these variables indicate the progress of decompression.
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545 * The application may examine these but must not modify them.
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548 /* Row index of next scanline to be read from jpeg_read_scanlines().
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549 * Application may use this to control its processing loop, e.g.,
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550 * "while (output_scanline < output_height)".
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552 JDIMENSION output_scanline; /* 0 .. output_height-1 */
\r
554 /* Current input scan number and number of iMCU rows completed in scan.
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555 * These indicate the progress of the decompressor input side.
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557 int input_scan_number; /* Number of SOS markers seen so far */
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558 JDIMENSION input_iMCU_row; /* Number of iMCU rows completed */
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560 /* The "output scan number" is the notional scan being displayed by the
\r
561 * output side. The decompressor will not allow output scan/row number
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562 * to get ahead of input scan/row, but it can fall arbitrarily far behind.
\r
564 int output_scan_number; /* Nominal scan number being displayed */
\r
565 JDIMENSION output_iMCU_row; /* Number of iMCU rows read */
\r
567 /* Current progression status. coef_bits[c][i] indicates the precision
\r
568 * with which component c's DCT coefficient i (in zigzag order) is known.
\r
569 * It is -1 when no data has yet been received, otherwise it is the point
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570 * transform (shift) value for the most recent scan of the coefficient
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571 * (thus, 0 at completion of the progression).
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572 * This pointer is NULL when reading a non-progressive file.
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574 int (*coef_bits)[DCTSIZE2]; /* -1 or current Al value for each coef */
\r
576 /* Internal JPEG parameters --- the application usually need not look at
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577 * these fields. Note that the decompressor output side may not use
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578 * any parameters that can change between scans.
\r
581 /* Quantization and Huffman tables are carried forward across input
\r
582 * datastreams when processing abbreviated JPEG datastreams.
\r
585 JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS];
\r
586 /* ptrs to coefficient quantization tables, or NULL if not defined */
\r
588 JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS];
\r
589 JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS];
\r
590 /* ptrs to Huffman coding tables, or NULL if not defined */
\r
592 /* These parameters are never carried across datastreams, since they
\r
593 * are given in SOF/SOS markers or defined to be reset by SOI.
\r
596 int data_precision; /* bits of precision in image data */
\r
598 jpeg_component_info * comp_info;
\r
599 /* comp_info[i] describes component that appears i'th in SOF */
\r
601 boolean progressive_mode; /* TRUE if SOFn specifies progressive mode */
\r
602 boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */
\r
604 UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */
\r
605 UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */
\r
606 UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */
\r
608 unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */
\r
610 /* These fields record data obtained from optional markers recognized by
\r
611 * the JPEG library.
\r
613 boolean saw_JFIF_marker; /* TRUE iff a JFIF APP0 marker was found */
\r
614 /* Data copied from JFIF marker: */
\r
615 UINT8 density_unit; /* JFIF code for pixel size units */
\r
616 UINT16 X_density; /* Horizontal pixel density */
\r
617 UINT16 Y_density; /* Vertical pixel density */
\r
618 boolean saw_Adobe_marker; /* TRUE iff an Adobe APP14 marker was found */
\r
619 UINT8 Adobe_transform; /* Color transform code from Adobe marker */
\r
621 boolean CCIR601_sampling; /* TRUE=first samples are cosited */
\r
623 /* Remaining fields are known throughout decompressor, but generally
\r
624 * should not be touched by a surrounding application.
\r
628 * These fields are computed during decompression startup
\r
630 int max_h_samp_factor; /* largest h_samp_factor */
\r
631 int max_v_samp_factor; /* largest v_samp_factor */
\r
633 int min_DCT_scaled_size; /* smallest DCT_scaled_size of any component */
\r
635 JDIMENSION total_iMCU_rows; /* # of iMCU rows in image */
\r
636 /* The coefficient controller's input and output progress is measured in
\r
637 * units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows
\r
638 * in fully interleaved JPEG scans, but are used whether the scan is
\r
639 * interleaved or not. We define an iMCU row as v_samp_factor DCT block
\r
640 * rows of each component. Therefore, the IDCT output contains
\r
641 * v_samp_factor*DCT_scaled_size sample rows of a component per iMCU row.
\r
644 JSAMPLE * sample_range_limit; /* table for fast range-limiting */
\r
647 * These fields are valid during any one scan.
\r
648 * They describe the components and MCUs actually appearing in the scan.
\r
649 * Note that the decompressor output side must not use these fields.
\r
651 int comps_in_scan; /* # of JPEG components in this scan */
\r
652 jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN];
\r
653 /* *cur_comp_info[i] describes component that appears i'th in SOS */
\r
655 JDIMENSION MCUs_per_row; /* # of MCUs across the image */
\r
656 JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */
\r
658 int blocks_in_MCU; /* # of DCT blocks per MCU */
\r
659 int MCU_membership[D_MAX_BLOCKS_IN_MCU];
\r
660 /* MCU_membership[i] is index in cur_comp_info of component owning */
\r
661 /* i'th block in an MCU */
\r
663 int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */
\r
665 /* This field is shared between entropy decoder and marker parser.
\r
666 * It is either zero or the code of a JPEG marker that has been
\r
667 * read from the data source, but has not yet been processed.
\r
672 * Links to decompression subobjects (methods, private variables of modules)
\r
674 struct jpeg_decomp_master * master;
\r
675 struct jpeg_d_main_controller * main;
\r
676 struct jpeg_d_coef_controller * coef;
\r
677 struct jpeg_d_post_controller * post;
\r
678 struct jpeg_input_controller * inputctl;
\r
679 struct jpeg_marker_reader * marker;
\r
680 struct jpeg_entropy_decoder * entropy;
\r
681 struct jpeg_inverse_dct * idct;
\r
682 struct jpeg_upsampler * upsample;
\r
683 struct jpeg_color_deconverter * cconvert;
\r
684 struct jpeg_color_quantizer * cquantize;
\r
688 /* "Object" declarations for JPEG modules that may be supplied or called
\r
689 * directly by the surrounding application.
\r
690 * As with all objects in the JPEG library, these structs only define the
\r
691 * publicly visible methods and state variables of a module. Additional
\r
692 * private fields may exist after the public ones.
\r
696 /* Error handler object */
\r
698 struct jpeg_error_mgr {
\r
699 /* Error exit handler: does not return to caller */
\r
700 JMETHOD(void, error_exit, (j_common_ptr cinfo));
\r
701 /* Conditionally emit a trace or warning message */
\r
702 JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level));
\r
703 /* Routine that actually outputs a trace or error message */
\r
704 JMETHOD(void, output_message, (j_common_ptr cinfo));
\r
705 /* Format a message string for the most recent JPEG error or message */
\r
706 JMETHOD(void, format_message, (j_common_ptr cinfo, char * buffer));
\r
707 #define JMSG_LENGTH_MAX 200 /* recommended size of format_message buffer */
\r
708 /* Reset error state variables at start of a new image */
\r
709 JMETHOD(void, reset_error_mgr, (j_common_ptr cinfo));
\r
711 /* The message ID code and any parameters are saved here.
\r
712 * A message can have one string parameter or up to 8 int parameters.
\r
715 #define JMSG_STR_PARM_MAX 80
\r
718 char s[JMSG_STR_PARM_MAX];
\r
721 /* Standard state variables for error facility */
\r
723 int trace_level; /* max msg_level that will be displayed */
\r
725 /* For recoverable corrupt-data errors, we emit a warning message,
\r
726 * but keep going unless emit_message chooses to abort. emit_message
\r
727 * should count warnings in num_warnings. The surrounding application
\r
728 * can check for bad data by seeing if num_warnings is nonzero at the
\r
729 * end of processing.
\r
731 long num_warnings; /* number of corrupt-data warnings */
\r
733 /* These fields point to the table(s) of error message strings.
\r
734 * An application can change the table pointer to switch to a different
\r
735 * message list (typically, to change the language in which errors are
\r
736 * reported). Some applications may wish to add additional error codes
\r
737 * that will be handled by the JPEG library error mechanism; the second
\r
738 * table pointer is used for this purpose.
\r
740 * First table includes all errors generated by JPEG library itself.
\r
741 * Error code 0 is reserved for a "no such error string" message.
\r
743 const char * const * jpeg_message_table; /* Library errors */
\r
744 int last_jpeg_message; /* Table contains strings 0..last_jpeg_message */
\r
745 /* Second table can be added by application (see cjpeg/djpeg for example).
\r
746 * It contains strings numbered first_addon_message..last_addon_message.
\r
748 const char * const * addon_message_table; /* Non-library errors */
\r
749 int first_addon_message; /* code for first string in addon table */
\r
750 int last_addon_message; /* code for last string in addon table */
\r
754 /* Progress monitor object */
\r
756 struct jpeg_progress_mgr {
\r
757 JMETHOD(void, progress_monitor, (j_common_ptr cinfo));
\r
759 long pass_counter; /* work units completed in this pass */
\r
760 long pass_limit; /* total number of work units in this pass */
\r
761 int completed_passes; /* passes completed so far */
\r
762 int total_passes; /* total number of passes expected */
\r
766 /* Data destination object for compression */
\r
768 struct jpeg_destination_mgr {
\r
769 JOCTET * next_output_byte; /* => next byte to write in buffer */
\r
770 size_t free_in_buffer; /* # of byte spaces remaining in buffer */
\r
772 JMETHOD(void, init_destination, (j_compress_ptr cinfo));
\r
773 JMETHOD(boolean, empty_output_buffer, (j_compress_ptr cinfo));
\r
774 JMETHOD(void, term_destination, (j_compress_ptr cinfo));
\r
778 /* Data source object for decompression */
\r
780 struct jpeg_source_mgr {
\r
781 const JOCTET * next_input_byte; /* => next byte to read from buffer */
\r
782 size_t bytes_in_buffer; /* # of bytes remaining in buffer */
\r
784 JMETHOD(void, init_source, (j_decompress_ptr cinfo));
\r
785 JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo));
\r
786 JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes));
\r
787 JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired));
\r
788 JMETHOD(void, term_source, (j_decompress_ptr cinfo));
\r
792 /* Memory manager object.
\r
793 * Allocates "small" objects (a few K total), "large" objects (tens of K),
\r
794 * and "really big" objects (virtual arrays with backing store if needed).
\r
795 * The memory manager does not allow individual objects to be freed; rather,
\r
796 * each created object is assigned to a pool, and whole pools can be freed
\r
797 * at once. This is faster and more convenient than remembering exactly what
\r
798 * to free, especially where malloc()/free() are not too speedy.
\r
799 * NB: alloc routines never return NULL. They exit to error_exit if not
\r
803 #define JPOOL_PERMANENT 0 /* lasts until master record is destroyed */
\r
804 #define JPOOL_IMAGE 1 /* lasts until done with image/datastream */
\r
805 #define JPOOL_NUMPOOLS 2
\r
807 typedef struct jvirt_sarray_control * jvirt_sarray_ptr;
\r
808 typedef struct jvirt_barray_control * jvirt_barray_ptr;
\r
811 struct jpeg_memory_mgr {
\r
812 /* Method pointers */
\r
813 JMETHOD(void *, alloc_small, (j_common_ptr cinfo, int pool_id,
\r
814 size_t sizeofobject));
\r
815 JMETHOD(void FAR *, alloc_large, (j_common_ptr cinfo, int pool_id,
\r
816 size_t sizeofobject));
\r
817 JMETHOD(JSAMPARRAY, alloc_sarray, (j_common_ptr cinfo, int pool_id,
\r
818 JDIMENSION samplesperrow,
\r
819 JDIMENSION numrows));
\r
820 JMETHOD(JBLOCKARRAY, alloc_barray, (j_common_ptr cinfo, int pool_id,
\r
821 JDIMENSION blocksperrow,
\r
822 JDIMENSION numrows));
\r
823 JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo,
\r
826 JDIMENSION samplesperrow,
\r
827 JDIMENSION numrows,
\r
828 JDIMENSION maxaccess));
\r
829 JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo,
\r
832 JDIMENSION blocksperrow,
\r
833 JDIMENSION numrows,
\r
834 JDIMENSION maxaccess));
\r
835 JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo));
\r
836 JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo,
\r
837 jvirt_sarray_ptr ptr,
\r
838 JDIMENSION start_row,
\r
839 JDIMENSION num_rows,
\r
840 boolean writable));
\r
841 JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo,
\r
842 jvirt_barray_ptr ptr,
\r
843 JDIMENSION start_row,
\r
844 JDIMENSION num_rows,
\r
845 boolean writable));
\r
846 JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id));
\r
847 JMETHOD(void, self_destruct, (j_common_ptr cinfo));
\r
849 /* Limit on memory allocation for this JPEG object. (Note that this is
\r
850 * merely advisory, not a guaranteed maximum; it only affects the space
\r
851 * used for virtual-array buffers.) May be changed by outer application
\r
852 * after creating the JPEG object.
\r
854 long max_memory_to_use;
\r
858 /* Routine signature for application-supplied marker processing methods.
\r
859 * Need not pass marker code since it is stored in cinfo->unread_marker.
\r
861 typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo));
\r
864 /* Declarations for routines called by application.
\r
865 * The JPP macro hides prototype parameters from compilers that can't cope.
\r
866 * Note JPP requires double parentheses.
\r
869 #ifdef HAVE_PROTOTYPES
\r
870 #define JPP(arglist) arglist
\r
872 #define JPP(arglist) ()
\r
876 /* Short forms of external names for systems with brain-damaged linkers.
\r
877 * We shorten external names to be unique in the first six letters, which
\r
878 * is good enough for all known systems.
\r
879 * (If your compiler itself needs names to be unique in less than 15
\r
880 * characters, you are out of luck. Get a better compiler.)
\r
883 #ifdef NEED_SHORT_EXTERNAL_NAMES
\r
884 #define jpeg_std_error jStdError
\r
885 #define jpeg_create_compress jCreaCompress
\r
886 #define jpeg_create_decompress jCreaDecompress
\r
887 #define jpeg_destroy_compress jDestCompress
\r
888 #define jpeg_destroy_decompress jDestDecompress
\r
889 #define jpeg_stdio_dest jStdDest
\r
890 #define jpeg_stdio_src jStdSrc
\r
891 #define jpeg_set_defaults jSetDefaults
\r
892 #define jpeg_set_colorspace jSetColorspace
\r
893 #define jpeg_default_colorspace jDefColorspace
\r
894 #define jpeg_set_quality jSetQuality
\r
895 #define jpeg_set_linear_quality jSetLQuality
\r
896 #define jpeg_add_quant_table jAddQuantTable
\r
897 #define jpeg_quality_scaling jQualityScaling
\r
898 #define jpeg_simple_progression jSimProgress
\r
899 #define jpeg_suppress_tables jSuppressTables
\r
900 #define jpeg_alloc_quant_table jAlcQTable
\r
901 #define jpeg_alloc_huff_table jAlcHTable
\r
902 #define jpeg_start_compress jStrtCompress
\r
903 #define jpeg_write_scanlines jWrtScanlines
\r
904 #define jpeg_finish_compress jFinCompress
\r
905 #define jpeg_write_raw_data jWrtRawData
\r
906 #define jpeg_write_marker jWrtMarker
\r
907 #define jpeg_write_tables jWrtTables
\r
908 #define jpeg_read_header jReadHeader
\r
909 #define jpeg_start_decompress jStrtDecompress
\r
910 #define jpeg_read_scanlines jReadScanlines
\r
911 #define jpeg_finish_decompress jFinDecompress
\r
912 #define jpeg_read_raw_data jReadRawData
\r
913 #define jpeg_has_multiple_scans jHasMultScn
\r
914 #define jpeg_start_output jStrtOutput
\r
915 #define jpeg_finish_output jFinOutput
\r
916 #define jpeg_input_complete jInComplete
\r
917 #define jpeg_new_colormap jNewCMap
\r
918 #define jpeg_consume_input jConsumeInput
\r
919 #define jpeg_calc_output_dimensions jCalcDimensions
\r
920 #define jpeg_set_marker_processor jSetMarker
\r
921 #define jpeg_read_coefficients jReadCoefs
\r
922 #define jpeg_write_coefficients jWrtCoefs
\r
923 #define jpeg_copy_critical_parameters jCopyCrit
\r
924 #define jpeg_abort_compress jAbrtCompress
\r
925 #define jpeg_abort_decompress jAbrtDecompress
\r
926 #define jpeg_abort jAbort
\r
927 #define jpeg_destroy jDestroy
\r
928 #define jpeg_resync_to_restart jResyncRestart
\r
929 #endif /* NEED_SHORT_EXTERNAL_NAMES */
\r
932 /* Default error-management setup */
\r
933 EXTERN struct jpeg_error_mgr *jpeg_std_error JPP((struct jpeg_error_mgr *err));
\r
935 /* Initialization and destruction of JPEG compression objects */
\r
936 /* NB: you must set up the error-manager BEFORE calling jpeg_create_xxx */
\r
937 EXTERN void jpeg_create_compress JPP((j_compress_ptr cinfo));
\r
938 EXTERN void jpeg_create_decompress JPP((j_decompress_ptr cinfo));
\r
939 EXTERN void jpeg_destroy_compress JPP((j_compress_ptr cinfo));
\r
940 EXTERN void jpeg_destroy_decompress JPP((j_decompress_ptr cinfo));
\r
942 /* Standard data source and destination managers: stdio streams. */
\r
943 /* Caller is responsible for opening the file before and closing after. */
\r
944 EXTERN void jpeg_stdio_dest JPP((j_compress_ptr cinfo, FILE * outfile));
\r
945 EXTERN void jpeg_stdio_src JPP((j_decompress_ptr cinfo, unsigned char *infile, int bufsize));
\r
947 /* Default parameter setup for compression */
\r
948 EXTERN void jpeg_set_defaults JPP((j_compress_ptr cinfo));
\r
949 /* Compression parameter setup aids */
\r
950 EXTERN void jpeg_set_colorspace JPP((j_compress_ptr cinfo,
\r
951 J_COLOR_SPACE colorspace));
\r
952 EXTERN void jpeg_default_colorspace JPP((j_compress_ptr cinfo));
\r
953 EXTERN void jpeg_set_quality JPP((j_compress_ptr cinfo, int quality,
\r
954 boolean force_baseline));
\r
955 EXTERN void jpeg_set_linear_quality JPP((j_compress_ptr cinfo,
\r
957 boolean force_baseline));
\r
958 EXTERN void jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl,
\r
959 const unsigned int *basic_table,
\r
961 boolean force_baseline));
\r
962 EXTERN int jpeg_quality_scaling JPP((int quality));
\r
963 EXTERN void jpeg_simple_progression JPP((j_compress_ptr cinfo));
\r
964 EXTERN void jpeg_suppress_tables JPP((j_compress_ptr cinfo,
\r
965 boolean suppress));
\r
966 EXTERN JQUANT_TBL * jpeg_alloc_quant_table JPP((j_common_ptr cinfo));
\r
967 EXTERN JHUFF_TBL * jpeg_alloc_huff_table JPP((j_common_ptr cinfo));
\r
969 /* Main entry points for compression */
\r
970 EXTERN void jpeg_start_compress JPP((j_compress_ptr cinfo,
\r
971 boolean write_all_tables));
\r
972 EXTERN JDIMENSION jpeg_write_scanlines JPP((j_compress_ptr cinfo,
\r
973 JSAMPARRAY scanlines,
\r
974 JDIMENSION num_lines));
\r
975 EXTERN void jpeg_finish_compress JPP((j_compress_ptr cinfo));
\r
977 /* Replaces jpeg_write_scanlines when writing raw downsampled data. */
\r
978 EXTERN JDIMENSION jpeg_write_raw_data JPP((j_compress_ptr cinfo,
\r
980 JDIMENSION num_lines));
\r
982 /* Write a special marker. See libjpeg.doc concerning safe usage. */
\r
983 EXTERN void jpeg_write_marker JPP((j_compress_ptr cinfo, int marker,
\r
984 const JOCTET *dataptr, unsigned int datalen));
\r
986 /* Alternate compression function: just write an abbreviated table file */
\r
987 EXTERN void jpeg_write_tables JPP((j_compress_ptr cinfo));
\r
989 /* Decompression startup: read start of JPEG datastream to see what's there */
\r
990 EXTERN int jpeg_read_header JPP((j_decompress_ptr cinfo,
\r
991 boolean require_image));
\r
992 /* Return value is one of: */
\r
993 #define JPEG_SUSPENDED 0 /* Suspended due to lack of input data */
\r
994 #define JPEG_HEADER_OK 1 /* Found valid image datastream */
\r
995 #define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */
\r
996 /* If you pass require_image = TRUE (normal case), you need not check for
\r
997 * a TABLES_ONLY return code; an abbreviated file will cause an error exit.
\r
998 * JPEG_SUSPENDED is only possible if you use a data source module that can
\r
999 * give a suspension return (the stdio source module doesn't).
\r
1002 /* Main entry points for decompression */
\r
1003 EXTERN boolean jpeg_start_decompress JPP((j_decompress_ptr cinfo));
\r
1004 EXTERN JDIMENSION jpeg_read_scanlines JPP((j_decompress_ptr cinfo,
\r
1005 JSAMPARRAY scanlines,
\r
1006 JDIMENSION max_lines));
\r
1007 EXTERN boolean jpeg_finish_decompress JPP((j_decompress_ptr cinfo));
\r
1009 /* Replaces jpeg_read_scanlines when reading raw downsampled data. */
\r
1010 EXTERN JDIMENSION jpeg_read_raw_data JPP((j_decompress_ptr cinfo,
\r
1012 JDIMENSION max_lines));
\r
1014 /* Additional entry points for buffered-image mode. */
\r
1015 EXTERN boolean jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo));
\r
1016 EXTERN boolean jpeg_start_output JPP((j_decompress_ptr cinfo,
\r
1017 int scan_number));
\r
1018 EXTERN boolean jpeg_finish_output JPP((j_decompress_ptr cinfo));
\r
1019 EXTERN boolean jpeg_input_complete JPP((j_decompress_ptr cinfo));
\r
1020 EXTERN void jpeg_new_colormap JPP((j_decompress_ptr cinfo));
\r
1021 EXTERN int jpeg_consume_input JPP((j_decompress_ptr cinfo));
\r
1022 /* Return value is one of: */
\r
1023 /* #define JPEG_SUSPENDED 0 Suspended due to lack of input data */
\r
1024 #define JPEG_REACHED_SOS 1 /* Reached start of new scan */
\r
1025 #define JPEG_REACHED_EOI 2 /* Reached end of image */
\r
1026 #define JPEG_ROW_COMPLETED 3 /* Completed one iMCU row */
\r
1027 #define JPEG_SCAN_COMPLETED 4 /* Completed last iMCU row of a scan */
\r
1029 /* Precalculate output dimensions for current decompression parameters. */
\r
1030 EXTERN void jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo));
\r
1032 /* Install a special processing method for COM or APPn markers. */
\r
1033 EXTERN void jpeg_set_marker_processor JPP((j_decompress_ptr cinfo,
\r
1035 jpeg_marker_parser_method routine));
\r
1037 /* Read or write raw DCT coefficients --- useful for lossless transcoding. */
\r
1038 EXTERN jvirt_barray_ptr * jpeg_read_coefficients JPP((j_decompress_ptr cinfo));
\r
1039 EXTERN void jpeg_write_coefficients JPP((j_compress_ptr cinfo,
\r
1040 jvirt_barray_ptr * coef_arrays));
\r
1041 EXTERN void jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo,
\r
1042 j_compress_ptr dstinfo));
\r
1044 /* If you choose to abort compression or decompression before completing
\r
1045 * jpeg_finish_(de)compress, then you need to clean up to release memory,
\r
1046 * temporary files, etc. You can just call jpeg_destroy_(de)compress
\r
1047 * if you're done with the JPEG object, but if you want to clean it up and
\r
1048 * reuse it, call this:
\r
1050 EXTERN void jpeg_abort_compress JPP((j_compress_ptr cinfo));
\r
1051 EXTERN void jpeg_abort_decompress JPP((j_decompress_ptr cinfo));
\r
1053 /* Generic versions of jpeg_abort and jpeg_destroy that work on either
\r
1054 * flavor of JPEG object. These may be more convenient in some places.
\r
1056 EXTERN void jpeg_abort JPP((j_common_ptr cinfo));
\r
1057 EXTERN void jpeg_destroy JPP((j_common_ptr cinfo));
\r
1059 /* Default restart-marker-resync procedure for use by data source modules */
\r
1060 EXTERN boolean jpeg_resync_to_restart JPP((j_decompress_ptr cinfo,
\r
1064 /* These marker codes are exported since applications and data source modules
\r
1065 * are likely to want to use them.
\r
1068 #define JPEG_RST0 0xD0 /* RST0 marker code */
\r
1069 #define JPEG_EOI 0xD9 /* EOI marker code */
\r
1070 #define JPEG_APP0 0xE0 /* APP0 marker code */
\r
1071 #define JPEG_COM 0xFE /* COM marker code */
\r
1074 /* If we have a brain-damaged compiler that emits warnings (or worse, errors)
\r
1075 * for structure definitions that are never filled in, keep it quiet by
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1076 * supplying dummy definitions for the various substructures.
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1079 #ifdef INCOMPLETE_TYPES_BROKEN
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1080 #ifndef JPEG_INTERNALS /* will be defined in jpegint.h */
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1081 struct jvirt_sarray_control { long dummy; };
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1082 struct jvirt_barray_control { long dummy; };
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1083 struct jpeg_comp_master { long dummy; };
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1084 struct jpeg_c_main_controller { long dummy; };
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1085 struct jpeg_c_prep_controller { long dummy; };
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1086 struct jpeg_c_coef_controller { long dummy; };
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1087 struct jpeg_marker_writer { long dummy; };
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1088 struct jpeg_color_converter { long dummy; };
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1089 struct jpeg_downsampler { long dummy; };
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1090 struct jpeg_forward_dct { long dummy; };
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1091 struct jpeg_entropy_encoder { long dummy; };
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1092 struct jpeg_decomp_master { long dummy; };
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1093 struct jpeg_d_main_controller { long dummy; };
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1094 struct jpeg_d_coef_controller { long dummy; };
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1095 struct jpeg_d_post_controller { long dummy; };
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1096 struct jpeg_input_controller { long dummy; };
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1097 struct jpeg_marker_reader { long dummy; };
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1098 struct jpeg_entropy_decoder { long dummy; };
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1099 struct jpeg_inverse_dct { long dummy; };
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1100 struct jpeg_upsampler { long dummy; };
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1101 struct jpeg_color_deconverter { long dummy; };
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1102 struct jpeg_color_quantizer { long dummy; };
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1103 #endif /* JPEG_INTERNALS */
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1104 #endif /* INCOMPLETE_TYPES_BROKEN */
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1108 * The JPEG library modules define JPEG_INTERNALS before including this file.
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1109 * The internal structure declarations are read only when that is true.
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1110 * Applications using the library should not include jpegint.h, but may wish
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1111 * to include jerror.h.
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1114 #ifdef JPEG_INTERNALS
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1115 #include "jpegint.h" /* fetch private declarations */
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1116 #include "jerror.h" /* fetch error codes too */
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1119 #ifdef __cplusplus
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1123 #endif /* JPEGLIB_H */
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projects / xonotic / netradiant.git / blob