136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* 236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * jmorecfg.h 336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * 4a73e870ad02de20c2b34cb3a5382c2846c2afbe3DRC * This file was part of the Independent JPEG Group's software: 55ead57a34a398aa798f35bd7a6abad19b2e453e2Thomas G. Lane * Copyright (C) 1991-1997, Thomas G. Lane. 6c23e36e80009728b8c0f5e36ba6cb07885334d3bDRC * Modified 1997-2009 by Guido Vollbeding. 7da13af6b8d5427af89bbdc5698b4e09d0ea814feDRC * libjpeg-turbo Modifications: 88e9cef2e6f5156c4b055a04a8f979b7291fc6b7aDRC * Copyright (C) 2009, 2011, 2014-2015, D. R. Commander. 96eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * For conditions of distribution and use, see the accompanying README.ijg 106eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * file. 1136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * 1236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * This file contains additional configuration options that customize the 1336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * JPEG software for special applications or support machine-dependent 1436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * optimizations. Most users will not need to touch this file. 1536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 1636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 1736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 1836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* 1936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * Maximum number of components (color channels) allowed in JPEG image. 2036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * To meet the letter of the JPEG spec, set this to 255. However, darn 2136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * few applications need more than 4 channels (maybe 5 for CMYK + alpha 2236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * mask). We recommend 10 as a reasonable compromise; use 4 if you are 2336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * really short on memory. (Each allowed component costs a hundred or so 2436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * bytes of storage, whether actually used in an image or not.) 2536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 2636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 27e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define MAX_COMPONENTS 10 /* maximum number of image components */ 2836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 2936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 3036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* 3136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * Basic data types. 3236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * You may need to change these if you have a machine with unusual data 3336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * type sizes; for example, "char" not 8 bits, "short" not 16 bits, 3436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * or "long" not 32 bits. We don't care whether "int" is 16 or 32 bits, 3536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * but it had better be at least 16. 3636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 3736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 3836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Representation of a single sample (pixel element value). 3936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * We frequently allocate large arrays of these, so it's important to keep 4036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * them small. But if you have memory to burn and access to char or short 4136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * arrays is very slow on your hardware, you might want to change these. 4236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 4336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 4436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#if BITS_IN_JSAMPLE == 8 4536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* JSAMPLE should be the smallest type that will hold the values 0..255. 4636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * You can use a signed char by having GETJSAMPLE mask it with 0xFF. 4736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 4836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 4936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifdef HAVE_UNSIGNED_CHAR 5036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 5136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef unsigned char JSAMPLE; 5236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define GETJSAMPLE(value) ((int) (value)) 5336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 5436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#else /* not HAVE_UNSIGNED_CHAR */ 5536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 5636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef char JSAMPLE; 570ca44258fc43bc44ea31b875001311591cc5634cConstantin Kaplinsky#ifdef __CHAR_UNSIGNED__ 5836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define GETJSAMPLE(value) ((int) (value)) 5936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#else 6036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define GETJSAMPLE(value) ((int) (value) & 0xFF) 610ca44258fc43bc44ea31b875001311591cc5634cConstantin Kaplinsky#endif /* __CHAR_UNSIGNED__ */ 6236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 6336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif /* HAVE_UNSIGNED_CHAR */ 6436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 65e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define MAXJSAMPLE 255 66e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define CENTERJSAMPLE 128 6736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 6836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif /* BITS_IN_JSAMPLE == 8 */ 6936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 7036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 7136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#if BITS_IN_JSAMPLE == 12 7236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* JSAMPLE should be the smallest type that will hold the values 0..4095. 7336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * On nearly all machines "short" will do nicely. 7436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 7536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 7636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef short JSAMPLE; 7736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define GETJSAMPLE(value) ((int) (value)) 7836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 79e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define MAXJSAMPLE 4095 80e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define CENTERJSAMPLE 2048 8136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 8236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif /* BITS_IN_JSAMPLE == 12 */ 8336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 8436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 8536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Representation of a DCT frequency coefficient. 8636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * This should be a signed value of at least 16 bits; "short" is usually OK. 8736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * Again, we allocate large arrays of these, but you can change to int 8836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * if you have memory to burn and "short" is really slow. 8936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 9036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 9136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef short JCOEF; 9236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 9336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 9436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Compressed datastreams are represented as arrays of JOCTET. 9536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * These must be EXACTLY 8 bits wide, at least once they are written to 9636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * external storage. Note that when using the stdio data source/destination 9736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * managers, this is also the data type passed to fread/fwrite. 9836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 9936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 10036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifdef HAVE_UNSIGNED_CHAR 10136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 10236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef unsigned char JOCTET; 10336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define GETJOCTET(value) (value) 10436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 10536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#else /* not HAVE_UNSIGNED_CHAR */ 10636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 10736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef char JOCTET; 1080ca44258fc43bc44ea31b875001311591cc5634cConstantin Kaplinsky#ifdef __CHAR_UNSIGNED__ 10936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define GETJOCTET(value) (value) 11036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#else 11136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define GETJOCTET(value) ((value) & 0xFF) 1120ca44258fc43bc44ea31b875001311591cc5634cConstantin Kaplinsky#endif /* __CHAR_UNSIGNED__ */ 11336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 11436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif /* HAVE_UNSIGNED_CHAR */ 11536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 11636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 11736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* These typedefs are used for various table entries and so forth. 11836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * They must be at least as wide as specified; but making them too big 11936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * won't cost a huge amount of memory, so we don't provide special 12036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * extraction code like we did for JSAMPLE. (In other words, these 12136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * typedefs live at a different point on the speed/space tradeoff curve.) 12236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 12336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 12436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* UINT8 must hold at least the values 0..255. */ 12536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 12636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifdef HAVE_UNSIGNED_CHAR 12736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef unsigned char UINT8; 12836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#else /* not HAVE_UNSIGNED_CHAR */ 1290ca44258fc43bc44ea31b875001311591cc5634cConstantin Kaplinsky#ifdef __CHAR_UNSIGNED__ 13036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef char UINT8; 1310ca44258fc43bc44ea31b875001311591cc5634cConstantin Kaplinsky#else /* not __CHAR_UNSIGNED__ */ 13236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef short UINT8; 1330ca44258fc43bc44ea31b875001311591cc5634cConstantin Kaplinsky#endif /* __CHAR_UNSIGNED__ */ 13436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif /* HAVE_UNSIGNED_CHAR */ 13536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 13636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* UINT16 must hold at least the values 0..65535. */ 13736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 13836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifdef HAVE_UNSIGNED_SHORT 13936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef unsigned short UINT16; 14036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#else /* not HAVE_UNSIGNED_SHORT */ 14136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef unsigned int UINT16; 14236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif /* HAVE_UNSIGNED_SHORT */ 14336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 14436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* INT16 must hold at least the values -32768..32767. */ 14536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 146e5eaf37440b8e337ab150c017df7c03faf846c51DRC#ifndef XMD_H /* X11/xmd.h correctly defines INT16 */ 14736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef short INT16; 14836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif 14936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 1506eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis/* INT32 must hold at least signed 32-bit values. 1516eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * 1526eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * NOTE: The INT32 typedef dates back to libjpeg v5 (1994.) Integers were 1536eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * sometimes 16-bit back then (MS-DOS), which is why INT32 is typedef'd to 1546eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * long. It also wasn't common (or at least as common) in 1994 for INT32 to be 1556eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * defined by platform headers. Since then, however, INT32 is defined in 1566eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * several other common places: 1576eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * 1586eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * Xmd.h (X11 header) typedefs INT32 to int on 64-bit platforms and long on 1596eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * 32-bit platforms (i.e always a 32-bit signed type.) 1606eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * 1616eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * basetsd.h (Win32 header) typedefs INT32 to int (always a 32-bit signed type 1626eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * on modern platforms.) 1636eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * 1646eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * qglobal.h (Qt header) typedefs INT32 to int (always a 32-bit signed type on 1656eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * modern platforms.) 1666eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * 1676eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * This is a recipe for conflict, since "long" and "int" aren't always 1686eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * compatible types. Since the definition of INT32 has technically been part 1696eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * of the libjpeg API for more than 20 years, we can't remove it, but we do not 1706eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * use it internally any longer. We instead define a separate type (JLONG) 1716eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * for internal use, which ensures that internal behavior will always be the 1726eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis * same regardless of any external headers that may be included. 1736eb7d3798b5a79347c62825fc4c16f7ce673bdd0Alex Naidis */ 17436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 175e5eaf37440b8e337ab150c017df7c03faf846c51DRC#ifndef XMD_H /* X11/xmd.h correctly defines INT32 */ 1765996a25e2f50d20d6a8f09830724035b49c3927bGuido Vollbeding#ifndef _BASETSD_H_ /* Microsoft defines it in basetsd.h */ 177989630f70cf1af69ebfefca8910d1647bf189712Guido Vollbeding#ifndef _BASETSD_H /* MinGW is slightly different */ 1785996a25e2f50d20d6a8f09830724035b49c3927bGuido Vollbeding#ifndef QGLOBAL_H /* Qt defines it in qglobal.h */ 17936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef long INT32; 18036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif 1815996a25e2f50d20d6a8f09830724035b49c3927bGuido Vollbeding#endif 1825996a25e2f50d20d6a8f09830724035b49c3927bGuido Vollbeding#endif 183989630f70cf1af69ebfefca8910d1647bf189712Guido Vollbeding#endif 18436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 18536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Datatype used for image dimensions. The JPEG standard only supports 18636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * images up to 64K*64K due to 16-bit fields in SOF markers. Therefore 18736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * "unsigned int" is sufficient on all machines. However, if you need to 18836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * handle larger images and you don't mind deviating from the spec, you 189498d9bc92fcf39124b6f08e57326944dedd2ddd6Chandler Carruth * can change this datatype. (Note that changing this datatype will 190498d9bc92fcf39124b6f08e57326944dedd2ddd6Chandler Carruth * potentially require modifying the SIMD code. The x86-64 SIMD extensions, 191498d9bc92fcf39124b6f08e57326944dedd2ddd6Chandler Carruth * in particular, assume a 32-bit JDIMENSION.) 19236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 19336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 19436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef unsigned int JDIMENSION; 19536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 19636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define JPEG_MAX_DIMENSION 65500L /* a tad under 64K to prevent overflows */ 19736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 19836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 199489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane/* These macros are used in all function definitions and extern declarations. 200489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane * You could modify them if you need to change function linkage conventions; 201489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane * in particular, you'll need to do that to make the library a Windows DLL. 20236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * Another application is to make all functions global for use with debuggers 20336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * or code profilers that require it. 20436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 20536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 206489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane/* a function called through method pointers: */ 207e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define METHODDEF(type) static type 208489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane/* a function used only in its module: */ 209e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define LOCAL(type) static type 210489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane/* a function referenced thru EXTERNs: */ 211e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define GLOBAL(type) type 212489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane/* a reference to a GLOBAL function: */ 213e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define EXTERN(type) extern type 214489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane 215489583f5165e05d37302e8eeec58104ea0109127Thomas G. Lane 216e2dd3e3e5cb479f8596325e72f0595a31bf79921DRC/* Originally, this macro was used as a way of defining function prototypes 217e2dd3e3e5cb479f8596325e72f0595a31bf79921DRC * for both modern compilers as well as older compilers that did not support 2182a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC * prototype parameters. libjpeg-turbo has never supported these older, 2192a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC * non-ANSI compilers, but the macro is still included because there is some 2202a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC * software out there that uses it. 221e2dd3e3e5cb479f8596325e72f0595a31bf79921DRC */ 222e2dd3e3e5cb479f8596325e72f0595a31bf79921DRC 223e2dd3e3e5cb479f8596325e72f0595a31bf79921DRC#define JMETHOD(type,methodname,arglist) type (*methodname) arglist 224e2dd3e3e5cb479f8596325e72f0595a31bf79921DRC 225e2dd3e3e5cb479f8596325e72f0595a31bf79921DRC 2262a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC/* libjpeg-turbo no longer supports platforms that have far symbols (MS-DOS), 2272a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC * but again, some software relies on this macro. 2282a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC */ 2292a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC 2302a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC#undef FAR 2312a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC#define FAR 2322a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC 2332a6b8316fce86aa05c00bf44a29a28d2e9aec99cDRC 23436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* 23536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * On a few systems, type boolean and/or its values FALSE, TRUE may appear 23636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * in standard header files. Or you may have conflicts with application- 23736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * specific header files that you want to include together with these files. 23836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * Defining HAVE_BOOLEAN before including jpeglib.h should make it work. 23936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 24036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 24136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifndef HAVE_BOOLEAN 24236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lanetypedef int boolean; 24336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif 244e5eaf37440b8e337ab150c017df7c03faf846c51DRC#ifndef FALSE /* in case these macros already exist */ 245e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define FALSE 0 /* values of boolean */ 24636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif 24736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifndef TRUE 248e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define TRUE 1 24936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif 25036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 25136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 25236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* 25336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * The remaining options affect code selection within the JPEG library, 25436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * but they don't need to be visible to most applications using the library. 25536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * To minimize application namespace pollution, the symbols won't be 25636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * defined unless JPEG_INTERNALS or JPEG_INTERNAL_OPTIONS has been defined. 25736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 25836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 25936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifdef JPEG_INTERNALS 26036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define JPEG_INTERNAL_OPTIONS 26136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif 26236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 26336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifdef JPEG_INTERNAL_OPTIONS 26436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 26536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 26636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* 26736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * These defines indicate whether to include various optional functions. 26836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * Undefining some of these symbols will produce a smaller but less capable 26936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * library. Note that you can leave certain source files out of the 27036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * compilation/linking process if you've #undef'd the corresponding symbols. 27136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * (You may HAVE to do that if your compiler doesn't like null source files.) 27236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 27336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 27436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Capability options common to encoder and decoder: */ 27536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 276e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define DCT_ISLOW_SUPPORTED /* slow but accurate integer algorithm */ 277e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define DCT_IFAST_SUPPORTED /* faster, less accurate integer method */ 278e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define DCT_FLOAT_SUPPORTED /* floating-point: accurate, fast on fast HW */ 27936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 28036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Encoder capability options: */ 28136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 282bc79e0680a45d1ca330d690dae0340c8e17ab5e3Thomas G. Lane#define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ 283e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define C_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ 284e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define ENTROPY_OPT_SUPPORTED /* Optimization of entropy coding parms? */ 28536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Note: if you selected 12-bit data precision, it is dangerous to turn off 28636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * ENTROPY_OPT_SUPPORTED. The standard Huffman tables are only good for 8-bit 28736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * precision, so jchuff.c normally uses entropy optimization to compute 28836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * usable tables for higher precision. If you don't want to do optimization, 28936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * you'll have to supply different default Huffman tables. 290bc79e0680a45d1ca330d690dae0340c8e17ab5e3Thomas G. Lane * The exact same statements apply for progressive JPEG: the default tables 291bc79e0680a45d1ca330d690dae0340c8e17ab5e3Thomas G. Lane * don't work for progressive mode. (This may get fixed, however.) 29236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 29336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define INPUT_SMOOTHING_SUPPORTED /* Input image smoothing option? */ 29436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 29536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Decoder capability options: */ 29636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 29736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ 298e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define D_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ 299e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define SAVE_MARKERS_SUPPORTED /* jpeg_save_markers() needed? */ 300bc79e0680a45d1ca330d690dae0340c8e17ab5e3Thomas G. Lane#define BLOCK_SMOOTHING_SUPPORTED /* Block smoothing? (Progressive only) */ 301e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define IDCT_SCALING_SUPPORTED /* Output rescaling via IDCT? */ 30236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#undef UPSAMPLE_SCALING_SUPPORTED /* Output rescaling at upsample stage? */ 30336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define UPSAMPLE_MERGING_SUPPORTED /* Fast path for sloppy upsampling? */ 304e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define QUANT_1PASS_SUPPORTED /* 1-pass color quantization? */ 305e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define QUANT_2PASS_SUPPORTED /* 2-pass color quantization? */ 30636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 30736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* more capability options later, no doubt */ 30836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 30936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 31036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* 311976fd9687e5773f3653385da7a3489ce4d58dd51DRC * The RGB_RED, RGB_GREEN, RGB_BLUE, and RGB_PIXELSIZE macros are a vestigial 312976fd9687e5773f3653385da7a3489ce4d58dd51DRC * feature of libjpeg. The idea was that, if an application developer needed 313976fd9687e5773f3653385da7a3489ce4d58dd51DRC * to compress from/decompress to a BGR/BGRX/RGBX/XBGR/XRGB buffer, they could 314976fd9687e5773f3653385da7a3489ce4d58dd51DRC * change these macros, rebuild libjpeg, and link their application statically 315976fd9687e5773f3653385da7a3489ce4d58dd51DRC * with it. In reality, few people ever did this, because there were some 316976fd9687e5773f3653385da7a3489ce4d58dd51DRC * severe restrictions involved (cjpeg and djpeg no longer worked properly, 317976fd9687e5773f3653385da7a3489ce4d58dd51DRC * compressing/decompressing RGB JPEGs no longer worked properly, and the color 318976fd9687e5773f3653385da7a3489ce4d58dd51DRC * quantizer wouldn't work with pixel sizes other than 3.) Further, since all 319976fd9687e5773f3653385da7a3489ce4d58dd51DRC * of the O/S-supplied versions of libjpeg were built with the default values 320976fd9687e5773f3653385da7a3489ce4d58dd51DRC * of RGB_RED, RGB_GREEN, RGB_BLUE, and RGB_PIXELSIZE, many applications have 321976fd9687e5773f3653385da7a3489ce4d58dd51DRC * come to regard these values as immutable. 322976fd9687e5773f3653385da7a3489ce4d58dd51DRC * 323976fd9687e5773f3653385da7a3489ce4d58dd51DRC * The libjpeg-turbo colorspace extensions provide a much cleaner way of 324976fd9687e5773f3653385da7a3489ce4d58dd51DRC * compressing from/decompressing to buffers with arbitrary component orders 325976fd9687e5773f3653385da7a3489ce4d58dd51DRC * and pixel sizes. Thus, we do not support changing the values of RGB_RED, 326976fd9687e5773f3653385da7a3489ce4d58dd51DRC * RGB_GREEN, RGB_BLUE, or RGB_PIXELSIZE. In addition to the restrictions 327976fd9687e5773f3653385da7a3489ce4d58dd51DRC * listed above, changing these values will also break the SIMD extensions and 328976fd9687e5773f3653385da7a3489ce4d58dd51DRC * the regression tests. 32936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 33036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 331e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define RGB_RED 0 /* Offset of Red in an RGB scanline element */ 332e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define RGB_GREEN 1 /* Offset of Green */ 333e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define RGB_BLUE 2 /* Offset of Blue */ 334e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define RGB_PIXELSIZE 3 /* JSAMPLEs per RGB scanline element */ 33536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 33678df2e6115b0e579432d01cb034132cd4402a1baDRC#define JPEG_NUMCS 17 337f25c071eb745268452206bb633561b770c4d62eaDRC 338b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_RGB_RED 0 339b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_RGB_GREEN 1 340b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_RGB_BLUE 2 341b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_RGB_PIXELSIZE 3 342b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC 343b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_RGBX_RED 0 344b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_RGBX_GREEN 1 345b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_RGBX_BLUE 2 346b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_RGBX_PIXELSIZE 4 347b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC 348b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_BGR_RED 2 349b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_BGR_GREEN 1 350b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_BGR_BLUE 0 351b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_BGR_PIXELSIZE 3 352b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC 353b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_BGRX_RED 2 354b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_BGRX_GREEN 1 355b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_BGRX_BLUE 0 356b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_BGRX_PIXELSIZE 4 357b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC 358b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_XBGR_RED 3 359b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_XBGR_GREEN 2 360b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_XBGR_BLUE 1 361b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_XBGR_PIXELSIZE 4 362b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC 363b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_XRGB_RED 1 364b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_XRGB_GREEN 2 365b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_XRGB_BLUE 3 366b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC#define EXT_XRGB_PIXELSIZE 4 367b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC 368f25c071eb745268452206bb633561b770c4d62eaDRCstatic const int rgb_red[JPEG_NUMCS] = { 369b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC -1, -1, RGB_RED, -1, -1, -1, EXT_RGB_RED, EXT_RGBX_RED, 37067ce3b2352fe1f7511edbfed74ec6960e41e97dcDRC EXT_BGR_RED, EXT_BGRX_RED, EXT_XBGR_RED, EXT_XRGB_RED, 37178df2e6115b0e579432d01cb034132cd4402a1baDRC EXT_RGBX_RED, EXT_BGRX_RED, EXT_XBGR_RED, EXT_XRGB_RED, 37278df2e6115b0e579432d01cb034132cd4402a1baDRC -1 373f25c071eb745268452206bb633561b770c4d62eaDRC}; 374f25c071eb745268452206bb633561b770c4d62eaDRC 375f25c071eb745268452206bb633561b770c4d62eaDRCstatic const int rgb_green[JPEG_NUMCS] = { 376b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC -1, -1, RGB_GREEN, -1, -1, -1, EXT_RGB_GREEN, EXT_RGBX_GREEN, 37767ce3b2352fe1f7511edbfed74ec6960e41e97dcDRC EXT_BGR_GREEN, EXT_BGRX_GREEN, EXT_XBGR_GREEN, EXT_XRGB_GREEN, 37878df2e6115b0e579432d01cb034132cd4402a1baDRC EXT_RGBX_GREEN, EXT_BGRX_GREEN, EXT_XBGR_GREEN, EXT_XRGB_GREEN, 37978df2e6115b0e579432d01cb034132cd4402a1baDRC -1 380f25c071eb745268452206bb633561b770c4d62eaDRC}; 381f25c071eb745268452206bb633561b770c4d62eaDRC 382f25c071eb745268452206bb633561b770c4d62eaDRCstatic const int rgb_blue[JPEG_NUMCS] = { 383b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC -1, -1, RGB_BLUE, -1, -1, -1, EXT_RGB_BLUE, EXT_RGBX_BLUE, 38467ce3b2352fe1f7511edbfed74ec6960e41e97dcDRC EXT_BGR_BLUE, EXT_BGRX_BLUE, EXT_XBGR_BLUE, EXT_XRGB_BLUE, 38578df2e6115b0e579432d01cb034132cd4402a1baDRC EXT_RGBX_BLUE, EXT_BGRX_BLUE, EXT_XBGR_BLUE, EXT_XRGB_BLUE, 38678df2e6115b0e579432d01cb034132cd4402a1baDRC -1 387f25c071eb745268452206bb633561b770c4d62eaDRC}; 388f25c071eb745268452206bb633561b770c4d62eaDRC 389f25c071eb745268452206bb633561b770c4d62eaDRCstatic const int rgb_pixelsize[JPEG_NUMCS] = { 390b4570bbf8cb3045e2b3cbf3d6a80d31735871d10DRC -1, -1, RGB_PIXELSIZE, -1, -1, -1, EXT_RGB_PIXELSIZE, EXT_RGBX_PIXELSIZE, 39167ce3b2352fe1f7511edbfed74ec6960e41e97dcDRC EXT_BGR_PIXELSIZE, EXT_BGRX_PIXELSIZE, EXT_XBGR_PIXELSIZE, EXT_XRGB_PIXELSIZE, 39278df2e6115b0e579432d01cb034132cd4402a1baDRC EXT_RGBX_PIXELSIZE, EXT_BGRX_PIXELSIZE, EXT_XBGR_PIXELSIZE, EXT_XRGB_PIXELSIZE, 39378df2e6115b0e579432d01cb034132cd4402a1baDRC -1 394f25c071eb745268452206bb633561b770c4d62eaDRC}; 39536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 39636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* Definitions for speed-related optimizations. */ 39736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 39836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* On some machines (notably 68000 series) "int" is 32 bits, but multiplying 39936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * two 16-bit shorts is faster than multiplying two ints. Define MULTIPLIER 40036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * as short on such a machine. MULTIPLIER must be at least 16 bits wide. 40136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 40236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 40336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifndef MULTIPLIER 4045eb84ff97f00c02aadfdce0cb30ab3e899c1b113Pierre Ossman#ifndef WITH_SIMD 405e5eaf37440b8e337ab150c017df7c03faf846c51DRC#define MULTIPLIER int /* type for fastest integer multiply */ 4065eb84ff97f00c02aadfdce0cb30ab3e899c1b113Pierre Ossman#else 4075eb84ff97f00c02aadfdce0cb30ab3e899c1b113Pierre Ossman#define MULTIPLIER short /* prefer 16-bit with SIMD for parellelism */ 4085eb84ff97f00c02aadfdce0cb30ab3e899c1b113Pierre Ossman#endif 40936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif 41036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 41136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 41236a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane/* FAST_FLOAT should be either float or double, whichever is done faster 41336a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * by your compiler. (Note that this type is only used in the floating point 41436a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane * DCT routines, so it only matters if you've defined DCT_FLOAT_SUPPORTED.) 41536a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane */ 41636a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 41736a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#ifndef FAST_FLOAT 41836a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#define FAST_FLOAT float 41936a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif 42036a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane 42136a4ccccd33f5cc9df62949554af87129ced7f84Thomas G. Lane#endif /* JPEG_INTERNAL_OPTIONS */ 422