Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * jmorecfg.h |
| 3 | * |
DRC | a73e870 | 2012-12-31 02:52:30 +0000 | [diff] [blame] | 4 | * This file was part of the Independent JPEG Group's software: |
Thomas G. Lane | 5ead57a | 1998-03-27 00:00:00 +0000 | [diff] [blame] | 5 | * Copyright (C) 1991-1997, Thomas G. Lane. |
DRC | c23e36e | 2015-07-06 16:04:04 +0000 | [diff] [blame] | 6 | * Modified 1997-2009 by Guido Vollbeding. |
DRC | da13af6 | 2014-05-18 17:52:06 +0000 | [diff] [blame] | 7 | * libjpeg-turbo Modifications: |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 8 | * Copyright (C) 2009, 2011, 2014, D. R. Commander. |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 9 | * For conditions of distribution and use, see the accompanying README file. |
| 10 | * |
| 11 | * This file contains additional configuration options that customize the |
| 12 | * JPEG software for special applications or support machine-dependent |
| 13 | * optimizations. Most users will not need to touch this file. |
| 14 | */ |
| 15 | |
| 16 | |
| 17 | /* |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 18 | * Maximum number of components (color channels) allowed in JPEG image. |
| 19 | * To meet the letter of the JPEG spec, set this to 255. However, darn |
| 20 | * few applications need more than 4 channels (maybe 5 for CMYK + alpha |
| 21 | * mask). We recommend 10 as a reasonable compromise; use 4 if you are |
| 22 | * really short on memory. (Each allowed component costs a hundred or so |
| 23 | * bytes of storage, whether actually used in an image or not.) |
| 24 | */ |
| 25 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 26 | #define MAX_COMPONENTS 10 /* maximum number of image components */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 27 | |
| 28 | |
| 29 | /* |
| 30 | * Basic data types. |
| 31 | * You may need to change these if you have a machine with unusual data |
| 32 | * type sizes; for example, "char" not 8 bits, "short" not 16 bits, |
| 33 | * or "long" not 32 bits. We don't care whether "int" is 16 or 32 bits, |
| 34 | * but it had better be at least 16. |
| 35 | */ |
| 36 | |
| 37 | /* Representation of a single sample (pixel element value). |
| 38 | * We frequently allocate large arrays of these, so it's important to keep |
| 39 | * them small. But if you have memory to burn and access to char or short |
| 40 | * arrays is very slow on your hardware, you might want to change these. |
| 41 | */ |
| 42 | |
| 43 | #if BITS_IN_JSAMPLE == 8 |
| 44 | /* JSAMPLE should be the smallest type that will hold the values 0..255. |
| 45 | * You can use a signed char by having GETJSAMPLE mask it with 0xFF. |
| 46 | */ |
| 47 | |
| 48 | #ifdef HAVE_UNSIGNED_CHAR |
| 49 | |
| 50 | typedef unsigned char JSAMPLE; |
| 51 | #define GETJSAMPLE(value) ((int) (value)) |
| 52 | |
| 53 | #else /* not HAVE_UNSIGNED_CHAR */ |
| 54 | |
| 55 | typedef char JSAMPLE; |
Constantin Kaplinsky | 0ca4425 | 2008-09-28 05:08:48 +0000 | [diff] [blame] | 56 | #ifdef __CHAR_UNSIGNED__ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 57 | #define GETJSAMPLE(value) ((int) (value)) |
| 58 | #else |
| 59 | #define GETJSAMPLE(value) ((int) (value) & 0xFF) |
Constantin Kaplinsky | 0ca4425 | 2008-09-28 05:08:48 +0000 | [diff] [blame] | 60 | #endif /* __CHAR_UNSIGNED__ */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 61 | |
| 62 | #endif /* HAVE_UNSIGNED_CHAR */ |
| 63 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 64 | #define MAXJSAMPLE 255 |
| 65 | #define CENTERJSAMPLE 128 |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 66 | |
| 67 | #endif /* BITS_IN_JSAMPLE == 8 */ |
| 68 | |
| 69 | |
| 70 | #if BITS_IN_JSAMPLE == 12 |
| 71 | /* JSAMPLE should be the smallest type that will hold the values 0..4095. |
| 72 | * On nearly all machines "short" will do nicely. |
| 73 | */ |
| 74 | |
| 75 | typedef short JSAMPLE; |
| 76 | #define GETJSAMPLE(value) ((int) (value)) |
| 77 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 78 | #define MAXJSAMPLE 4095 |
| 79 | #define CENTERJSAMPLE 2048 |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 80 | |
| 81 | #endif /* BITS_IN_JSAMPLE == 12 */ |
| 82 | |
| 83 | |
| 84 | /* Representation of a DCT frequency coefficient. |
| 85 | * This should be a signed value of at least 16 bits; "short" is usually OK. |
| 86 | * Again, we allocate large arrays of these, but you can change to int |
| 87 | * if you have memory to burn and "short" is really slow. |
| 88 | */ |
| 89 | |
| 90 | typedef short JCOEF; |
| 91 | |
| 92 | |
| 93 | /* Compressed datastreams are represented as arrays of JOCTET. |
| 94 | * These must be EXACTLY 8 bits wide, at least once they are written to |
| 95 | * external storage. Note that when using the stdio data source/destination |
| 96 | * managers, this is also the data type passed to fread/fwrite. |
| 97 | */ |
| 98 | |
| 99 | #ifdef HAVE_UNSIGNED_CHAR |
| 100 | |
| 101 | typedef unsigned char JOCTET; |
| 102 | #define GETJOCTET(value) (value) |
| 103 | |
| 104 | #else /* not HAVE_UNSIGNED_CHAR */ |
| 105 | |
| 106 | typedef char JOCTET; |
Constantin Kaplinsky | 0ca4425 | 2008-09-28 05:08:48 +0000 | [diff] [blame] | 107 | #ifdef __CHAR_UNSIGNED__ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 108 | #define GETJOCTET(value) (value) |
| 109 | #else |
| 110 | #define GETJOCTET(value) ((value) & 0xFF) |
Constantin Kaplinsky | 0ca4425 | 2008-09-28 05:08:48 +0000 | [diff] [blame] | 111 | #endif /* __CHAR_UNSIGNED__ */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 112 | |
| 113 | #endif /* HAVE_UNSIGNED_CHAR */ |
| 114 | |
| 115 | |
| 116 | /* These typedefs are used for various table entries and so forth. |
| 117 | * They must be at least as wide as specified; but making them too big |
| 118 | * won't cost a huge amount of memory, so we don't provide special |
| 119 | * extraction code like we did for JSAMPLE. (In other words, these |
| 120 | * typedefs live at a different point on the speed/space tradeoff curve.) |
| 121 | */ |
| 122 | |
| 123 | /* UINT8 must hold at least the values 0..255. */ |
| 124 | |
| 125 | #ifdef HAVE_UNSIGNED_CHAR |
| 126 | typedef unsigned char UINT8; |
| 127 | #else /* not HAVE_UNSIGNED_CHAR */ |
Constantin Kaplinsky | 0ca4425 | 2008-09-28 05:08:48 +0000 | [diff] [blame] | 128 | #ifdef __CHAR_UNSIGNED__ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 129 | typedef char UINT8; |
Constantin Kaplinsky | 0ca4425 | 2008-09-28 05:08:48 +0000 | [diff] [blame] | 130 | #else /* not __CHAR_UNSIGNED__ */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 131 | typedef short UINT8; |
Constantin Kaplinsky | 0ca4425 | 2008-09-28 05:08:48 +0000 | [diff] [blame] | 132 | #endif /* __CHAR_UNSIGNED__ */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 133 | #endif /* HAVE_UNSIGNED_CHAR */ |
| 134 | |
| 135 | /* UINT16 must hold at least the values 0..65535. */ |
| 136 | |
| 137 | #ifdef HAVE_UNSIGNED_SHORT |
| 138 | typedef unsigned short UINT16; |
| 139 | #else /* not HAVE_UNSIGNED_SHORT */ |
| 140 | typedef unsigned int UINT16; |
| 141 | #endif /* HAVE_UNSIGNED_SHORT */ |
| 142 | |
| 143 | /* INT16 must hold at least the values -32768..32767. */ |
| 144 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 145 | #ifndef XMD_H /* X11/xmd.h correctly defines INT16 */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 146 | typedef short INT16; |
| 147 | #endif |
| 148 | |
| 149 | /* INT32 must hold at least signed 32-bit values. */ |
| 150 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 151 | #ifndef XMD_H /* X11/xmd.h correctly defines INT32 */ |
Guido Vollbeding | 5996a25 | 2009-06-27 00:00:00 +0000 | [diff] [blame] | 152 | #ifndef _BASETSD_H_ /* Microsoft defines it in basetsd.h */ |
Guido Vollbeding | 989630f | 2010-01-10 00:00:00 +0000 | [diff] [blame] | 153 | #ifndef _BASETSD_H /* MinGW is slightly different */ |
Guido Vollbeding | 5996a25 | 2009-06-27 00:00:00 +0000 | [diff] [blame] | 154 | #ifndef QGLOBAL_H /* Qt defines it in qglobal.h */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 155 | typedef long INT32; |
| 156 | #endif |
Guido Vollbeding | 5996a25 | 2009-06-27 00:00:00 +0000 | [diff] [blame] | 157 | #endif |
| 158 | #endif |
Guido Vollbeding | 989630f | 2010-01-10 00:00:00 +0000 | [diff] [blame] | 159 | #endif |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 160 | |
| 161 | /* Datatype used for image dimensions. The JPEG standard only supports |
| 162 | * images up to 64K*64K due to 16-bit fields in SOF markers. Therefore |
| 163 | * "unsigned int" is sufficient on all machines. However, if you need to |
| 164 | * handle larger images and you don't mind deviating from the spec, you |
Chandler Carruth | 498d9bc | 2015-09-15 11:57:03 -0700 | [diff] [blame^] | 165 | * can change this datatype. (Note that changing this datatype will |
| 166 | * potentially require modifying the SIMD code. The x86-64 SIMD extensions, |
| 167 | * in particular, assume a 32-bit JDIMENSION.) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 168 | */ |
| 169 | |
| 170 | typedef unsigned int JDIMENSION; |
| 171 | |
| 172 | #define JPEG_MAX_DIMENSION 65500L /* a tad under 64K to prevent overflows */ |
| 173 | |
| 174 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 175 | /* These macros are used in all function definitions and extern declarations. |
| 176 | * You could modify them if you need to change function linkage conventions; |
| 177 | * in particular, you'll need to do that to make the library a Windows DLL. |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 178 | * Another application is to make all functions global for use with debuggers |
| 179 | * or code profilers that require it. |
| 180 | */ |
| 181 | |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 182 | /* a function called through method pointers: */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 183 | #define METHODDEF(type) static type |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 184 | /* a function used only in its module: */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 185 | #define LOCAL(type) static type |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 186 | /* a function referenced thru EXTERNs: */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 187 | #define GLOBAL(type) type |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 188 | /* a reference to a GLOBAL function: */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 189 | #define EXTERN(type) extern type |
Thomas G. Lane | 489583f | 1996-02-07 00:00:00 +0000 | [diff] [blame] | 190 | |
| 191 | |
DRC | e2dd3e3 | 2014-11-25 09:48:15 +0000 | [diff] [blame] | 192 | /* Originally, this macro was used as a way of defining function prototypes |
| 193 | * for both modern compilers as well as older compilers that did not support |
DRC | 2a6b831 | 2014-11-25 10:07:43 +0000 | [diff] [blame] | 194 | * prototype parameters. libjpeg-turbo has never supported these older, |
| 195 | * non-ANSI compilers, but the macro is still included because there is some |
| 196 | * software out there that uses it. |
DRC | e2dd3e3 | 2014-11-25 09:48:15 +0000 | [diff] [blame] | 197 | */ |
| 198 | |
| 199 | #define JMETHOD(type,methodname,arglist) type (*methodname) arglist |
| 200 | |
| 201 | |
DRC | 2a6b831 | 2014-11-25 10:07:43 +0000 | [diff] [blame] | 202 | /* libjpeg-turbo no longer supports platforms that have far symbols (MS-DOS), |
| 203 | * but again, some software relies on this macro. |
| 204 | */ |
| 205 | |
| 206 | #undef FAR |
| 207 | #define FAR |
| 208 | |
| 209 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 210 | /* |
| 211 | * On a few systems, type boolean and/or its values FALSE, TRUE may appear |
| 212 | * in standard header files. Or you may have conflicts with application- |
| 213 | * specific header files that you want to include together with these files. |
| 214 | * Defining HAVE_BOOLEAN before including jpeglib.h should make it work. |
| 215 | */ |
| 216 | |
| 217 | #ifndef HAVE_BOOLEAN |
| 218 | typedef int boolean; |
| 219 | #endif |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 220 | #ifndef FALSE /* in case these macros already exist */ |
| 221 | #define FALSE 0 /* values of boolean */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 222 | #endif |
| 223 | #ifndef TRUE |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 224 | #define TRUE 1 |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 225 | #endif |
| 226 | |
| 227 | |
| 228 | /* |
| 229 | * The remaining options affect code selection within the JPEG library, |
| 230 | * but they don't need to be visible to most applications using the library. |
| 231 | * To minimize application namespace pollution, the symbols won't be |
| 232 | * defined unless JPEG_INTERNALS or JPEG_INTERNAL_OPTIONS has been defined. |
| 233 | */ |
| 234 | |
| 235 | #ifdef JPEG_INTERNALS |
| 236 | #define JPEG_INTERNAL_OPTIONS |
| 237 | #endif |
| 238 | |
| 239 | #ifdef JPEG_INTERNAL_OPTIONS |
| 240 | |
| 241 | |
| 242 | /* |
| 243 | * These defines indicate whether to include various optional functions. |
| 244 | * Undefining some of these symbols will produce a smaller but less capable |
| 245 | * library. Note that you can leave certain source files out of the |
| 246 | * compilation/linking process if you've #undef'd the corresponding symbols. |
| 247 | * (You may HAVE to do that if your compiler doesn't like null source files.) |
| 248 | */ |
| 249 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 250 | /* Capability options common to encoder and decoder: */ |
| 251 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 252 | #define DCT_ISLOW_SUPPORTED /* slow but accurate integer algorithm */ |
| 253 | #define DCT_IFAST_SUPPORTED /* faster, less accurate integer method */ |
| 254 | #define DCT_FLOAT_SUPPORTED /* floating-point: accurate, fast on fast HW */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 255 | |
| 256 | /* Encoder capability options: */ |
| 257 | |
Thomas G. Lane | bc79e06 | 1995-08-02 00:00:00 +0000 | [diff] [blame] | 258 | #define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 259 | #define C_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ |
| 260 | #define ENTROPY_OPT_SUPPORTED /* Optimization of entropy coding parms? */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 261 | /* Note: if you selected 12-bit data precision, it is dangerous to turn off |
| 262 | * ENTROPY_OPT_SUPPORTED. The standard Huffman tables are only good for 8-bit |
| 263 | * precision, so jchuff.c normally uses entropy optimization to compute |
| 264 | * usable tables for higher precision. If you don't want to do optimization, |
| 265 | * you'll have to supply different default Huffman tables. |
Thomas G. Lane | bc79e06 | 1995-08-02 00:00:00 +0000 | [diff] [blame] | 266 | * The exact same statements apply for progressive JPEG: the default tables |
| 267 | * don't work for progressive mode. (This may get fixed, however.) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 268 | */ |
| 269 | #define INPUT_SMOOTHING_SUPPORTED /* Input image smoothing option? */ |
| 270 | |
| 271 | /* Decoder capability options: */ |
| 272 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 273 | #define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 274 | #define D_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ |
| 275 | #define SAVE_MARKERS_SUPPORTED /* jpeg_save_markers() needed? */ |
Thomas G. Lane | bc79e06 | 1995-08-02 00:00:00 +0000 | [diff] [blame] | 276 | #define BLOCK_SMOOTHING_SUPPORTED /* Block smoothing? (Progressive only) */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 277 | #define IDCT_SCALING_SUPPORTED /* Output rescaling via IDCT? */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 278 | #undef UPSAMPLE_SCALING_SUPPORTED /* Output rescaling at upsample stage? */ |
| 279 | #define UPSAMPLE_MERGING_SUPPORTED /* Fast path for sloppy upsampling? */ |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 280 | #define QUANT_1PASS_SUPPORTED /* 1-pass color quantization? */ |
| 281 | #define QUANT_2PASS_SUPPORTED /* 2-pass color quantization? */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 282 | |
| 283 | /* more capability options later, no doubt */ |
| 284 | |
| 285 | |
| 286 | /* |
DRC | 976fd96 | 2014-05-13 18:41:33 +0000 | [diff] [blame] | 287 | * The RGB_RED, RGB_GREEN, RGB_BLUE, and RGB_PIXELSIZE macros are a vestigial |
| 288 | * feature of libjpeg. The idea was that, if an application developer needed |
| 289 | * to compress from/decompress to a BGR/BGRX/RGBX/XBGR/XRGB buffer, they could |
| 290 | * change these macros, rebuild libjpeg, and link their application statically |
| 291 | * with it. In reality, few people ever did this, because there were some |
| 292 | * severe restrictions involved (cjpeg and djpeg no longer worked properly, |
| 293 | * compressing/decompressing RGB JPEGs no longer worked properly, and the color |
| 294 | * quantizer wouldn't work with pixel sizes other than 3.) Further, since all |
| 295 | * of the O/S-supplied versions of libjpeg were built with the default values |
| 296 | * of RGB_RED, RGB_GREEN, RGB_BLUE, and RGB_PIXELSIZE, many applications have |
| 297 | * come to regard these values as immutable. |
| 298 | * |
| 299 | * The libjpeg-turbo colorspace extensions provide a much cleaner way of |
| 300 | * compressing from/decompressing to buffers with arbitrary component orders |
| 301 | * and pixel sizes. Thus, we do not support changing the values of RGB_RED, |
| 302 | * RGB_GREEN, RGB_BLUE, or RGB_PIXELSIZE. In addition to the restrictions |
| 303 | * listed above, changing these values will also break the SIMD extensions and |
| 304 | * the regression tests. |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 305 | */ |
| 306 | |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 307 | #define RGB_RED 0 /* Offset of Red in an RGB scanline element */ |
| 308 | #define RGB_GREEN 1 /* Offset of Green */ |
| 309 | #define RGB_BLUE 2 /* Offset of Blue */ |
| 310 | #define RGB_PIXELSIZE 3 /* JSAMPLEs per RGB scanline element */ |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 311 | |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 312 | #define JPEG_NUMCS 17 |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 313 | |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 314 | #define EXT_RGB_RED 0 |
| 315 | #define EXT_RGB_GREEN 1 |
| 316 | #define EXT_RGB_BLUE 2 |
| 317 | #define EXT_RGB_PIXELSIZE 3 |
| 318 | |
| 319 | #define EXT_RGBX_RED 0 |
| 320 | #define EXT_RGBX_GREEN 1 |
| 321 | #define EXT_RGBX_BLUE 2 |
| 322 | #define EXT_RGBX_PIXELSIZE 4 |
| 323 | |
| 324 | #define EXT_BGR_RED 2 |
| 325 | #define EXT_BGR_GREEN 1 |
| 326 | #define EXT_BGR_BLUE 0 |
| 327 | #define EXT_BGR_PIXELSIZE 3 |
| 328 | |
| 329 | #define EXT_BGRX_RED 2 |
| 330 | #define EXT_BGRX_GREEN 1 |
| 331 | #define EXT_BGRX_BLUE 0 |
| 332 | #define EXT_BGRX_PIXELSIZE 4 |
| 333 | |
| 334 | #define EXT_XBGR_RED 3 |
| 335 | #define EXT_XBGR_GREEN 2 |
| 336 | #define EXT_XBGR_BLUE 1 |
| 337 | #define EXT_XBGR_PIXELSIZE 4 |
| 338 | |
| 339 | #define EXT_XRGB_RED 1 |
| 340 | #define EXT_XRGB_GREEN 2 |
| 341 | #define EXT_XRGB_BLUE 3 |
| 342 | #define EXT_XRGB_PIXELSIZE 4 |
| 343 | |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 344 | static const int rgb_red[JPEG_NUMCS] = { |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 345 | -1, -1, RGB_RED, -1, -1, -1, EXT_RGB_RED, EXT_RGBX_RED, |
DRC | 67ce3b2 | 2011-12-19 02:21:03 +0000 | [diff] [blame] | 346 | EXT_BGR_RED, EXT_BGRX_RED, EXT_XBGR_RED, EXT_XRGB_RED, |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 347 | EXT_RGBX_RED, EXT_BGRX_RED, EXT_XBGR_RED, EXT_XRGB_RED, |
| 348 | -1 |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 349 | }; |
| 350 | |
| 351 | static const int rgb_green[JPEG_NUMCS] = { |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 352 | -1, -1, RGB_GREEN, -1, -1, -1, EXT_RGB_GREEN, EXT_RGBX_GREEN, |
DRC | 67ce3b2 | 2011-12-19 02:21:03 +0000 | [diff] [blame] | 353 | EXT_BGR_GREEN, EXT_BGRX_GREEN, EXT_XBGR_GREEN, EXT_XRGB_GREEN, |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 354 | EXT_RGBX_GREEN, EXT_BGRX_GREEN, EXT_XBGR_GREEN, EXT_XRGB_GREEN, |
| 355 | -1 |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 356 | }; |
| 357 | |
| 358 | static const int rgb_blue[JPEG_NUMCS] = { |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 359 | -1, -1, RGB_BLUE, -1, -1, -1, EXT_RGB_BLUE, EXT_RGBX_BLUE, |
DRC | 67ce3b2 | 2011-12-19 02:21:03 +0000 | [diff] [blame] | 360 | EXT_BGR_BLUE, EXT_BGRX_BLUE, EXT_XBGR_BLUE, EXT_XRGB_BLUE, |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 361 | EXT_RGBX_BLUE, EXT_BGRX_BLUE, EXT_XBGR_BLUE, EXT_XRGB_BLUE, |
| 362 | -1 |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 363 | }; |
| 364 | |
| 365 | static const int rgb_pixelsize[JPEG_NUMCS] = { |
DRC | b4570bb | 2011-09-07 06:31:00 +0000 | [diff] [blame] | 366 | -1, -1, RGB_PIXELSIZE, -1, -1, -1, EXT_RGB_PIXELSIZE, EXT_RGBX_PIXELSIZE, |
DRC | 67ce3b2 | 2011-12-19 02:21:03 +0000 | [diff] [blame] | 367 | EXT_BGR_PIXELSIZE, EXT_BGRX_PIXELSIZE, EXT_XBGR_PIXELSIZE, EXT_XRGB_PIXELSIZE, |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 368 | EXT_RGBX_PIXELSIZE, EXT_BGRX_PIXELSIZE, EXT_XBGR_PIXELSIZE, EXT_XRGB_PIXELSIZE, |
| 369 | -1 |
DRC | f25c071 | 2009-04-03 12:00:51 +0000 | [diff] [blame] | 370 | }; |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 371 | |
| 372 | /* Definitions for speed-related optimizations. */ |
| 373 | |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 374 | /* On some machines (notably 68000 series) "int" is 32 bits, but multiplying |
| 375 | * two 16-bit shorts is faster than multiplying two ints. Define MULTIPLIER |
| 376 | * as short on such a machine. MULTIPLIER must be at least 16 bits wide. |
| 377 | */ |
| 378 | |
| 379 | #ifndef MULTIPLIER |
Pierre Ossman | 5eb84ff | 2009-03-09 13:25:30 +0000 | [diff] [blame] | 380 | #ifndef WITH_SIMD |
DRC | e5eaf37 | 2014-05-09 18:00:32 +0000 | [diff] [blame] | 381 | #define MULTIPLIER int /* type for fastest integer multiply */ |
Pierre Ossman | 5eb84ff | 2009-03-09 13:25:30 +0000 | [diff] [blame] | 382 | #else |
| 383 | #define MULTIPLIER short /* prefer 16-bit with SIMD for parellelism */ |
| 384 | #endif |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 385 | #endif |
| 386 | |
| 387 | |
| 388 | /* FAST_FLOAT should be either float or double, whichever is done faster |
| 389 | * by your compiler. (Note that this type is only used in the floating point |
| 390 | * DCT routines, so it only matters if you've defined DCT_FLOAT_SUPPORTED.) |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 391 | */ |
| 392 | |
| 393 | #ifndef FAST_FLOAT |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 394 | #define FAST_FLOAT float |
Thomas G. Lane | 36a4ccc | 1994-09-24 00:00:00 +0000 | [diff] [blame] | 395 | #endif |
| 396 | |
| 397 | #endif /* JPEG_INTERNAL_OPTIONS */ |