• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • File List
  • Globals

libswscale/swscale.c

Go to the documentation of this file.
00001 /*
00002  * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  *
00020  * the C code (not assembly, mmx, ...) of this file can be used
00021  * under the LGPL license too
00022  */
00023 
00024 /*
00025   supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8
00026   supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
00027   {BGR,RGB}{1,4,8,15,16} support dithering
00028 
00029   unscaled special converters (YV12=I420=IYUV, Y800=Y8)
00030   YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
00031   x -> x
00032   YUV9 -> YV12
00033   YUV9/YV12 -> Y800
00034   Y800 -> YUV9/YV12
00035   BGR24 -> BGR32 & RGB24 -> RGB32
00036   BGR32 -> BGR24 & RGB32 -> RGB24
00037   BGR15 -> BGR16
00038 */
00039 
00040 /*
00041 tested special converters (most are tested actually, but I did not write it down ...)
00042  YV12 -> BGR16
00043  YV12 -> YV12
00044  BGR15 -> BGR16
00045  BGR16 -> BGR16
00046  YVU9 -> YV12
00047 
00048 untested special converters
00049   YV12/I420 -> BGR15/BGR24/BGR32 (it is the yuv2rgb stuff, so it should be OK)
00050   YV12/I420 -> YV12/I420
00051   YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
00052   BGR24 -> BGR32 & RGB24 -> RGB32
00053   BGR32 -> BGR24 & RGB32 -> RGB24
00054   BGR24 -> YV12
00055 */
00056 
00057 #define _SVID_SOURCE //needed for MAP_ANONYMOUS
00058 #include <inttypes.h>
00059 #include <string.h>
00060 #include <math.h>
00061 #include <stdio.h>
00062 #include <unistd.h>
00063 #include "config.h"
00064 #include <assert.h>
00065 #if HAVE_SYS_MMAN_H
00066 #include <sys/mman.h>
00067 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
00068 #define MAP_ANONYMOUS MAP_ANON
00069 #endif
00070 #endif
00071 #include "swscale.h"
00072 #include "swscale_internal.h"
00073 #include "rgb2rgb.h"
00074 #include "libavutil/x86_cpu.h"
00075 #include "libavutil/bswap.h"
00076 
00077 unsigned swscale_version(void)
00078 {
00079     return LIBSWSCALE_VERSION_INT;
00080 }
00081 
00082 #undef MOVNTQ
00083 #undef PAVGB
00084 
00085 //#undef HAVE_MMX2
00086 //#define HAVE_AMD3DNOW
00087 //#undef HAVE_MMX
00088 //#undef ARCH_X86
00089 //#define WORDS_BIGENDIAN
00090 #define DITHER1XBPP
00091 
00092 #define FAST_BGR2YV12 // use 7 bit coefficients instead of 15 bit
00093 
00094 #define RET 0xC3 //near return opcode for x86
00095 
00096 #ifdef M_PI
00097 #define PI M_PI
00098 #else
00099 #define PI 3.14159265358979323846
00100 #endif
00101 
00102 #define isSupportedIn(x)    (       \
00103            (x)==PIX_FMT_YUV420P     \
00104         || (x)==PIX_FMT_YUVA420P    \
00105         || (x)==PIX_FMT_YUYV422     \
00106         || (x)==PIX_FMT_UYVY422     \
00107         || (x)==PIX_FMT_RGB32       \
00108         || (x)==PIX_FMT_RGB32_1     \
00109         || (x)==PIX_FMT_BGR24       \
00110         || (x)==PIX_FMT_BGR565      \
00111         || (x)==PIX_FMT_BGR555      \
00112         || (x)==PIX_FMT_BGR32       \
00113         || (x)==PIX_FMT_BGR32_1     \
00114         || (x)==PIX_FMT_RGB24       \
00115         || (x)==PIX_FMT_RGB565      \
00116         || (x)==PIX_FMT_RGB555      \
00117         || (x)==PIX_FMT_GRAY8       \
00118         || (x)==PIX_FMT_YUV410P     \
00119         || (x)==PIX_FMT_YUV440P     \
00120         || (x)==PIX_FMT_GRAY16BE    \
00121         || (x)==PIX_FMT_GRAY16LE    \
00122         || (x)==PIX_FMT_YUV444P     \
00123         || (x)==PIX_FMT_YUV422P     \
00124         || (x)==PIX_FMT_YUV411P     \
00125         || (x)==PIX_FMT_PAL8        \
00126         || (x)==PIX_FMT_BGR8        \
00127         || (x)==PIX_FMT_RGB8        \
00128         || (x)==PIX_FMT_BGR4_BYTE   \
00129         || (x)==PIX_FMT_RGB4_BYTE   \
00130         || (x)==PIX_FMT_YUV440P     \
00131         || (x)==PIX_FMT_MONOWHITE   \
00132         || (x)==PIX_FMT_MONOBLACK   \
00133     )
00134 #define isSupportedOut(x)   (       \
00135            (x)==PIX_FMT_YUV420P     \
00136         || (x)==PIX_FMT_YUYV422     \
00137         || (x)==PIX_FMT_UYVY422     \
00138         || (x)==PIX_FMT_YUV444P     \
00139         || (x)==PIX_FMT_YUV422P     \
00140         || (x)==PIX_FMT_YUV411P     \
00141         || isRGB(x)                 \
00142         || isBGR(x)                 \
00143         || (x)==PIX_FMT_NV12        \
00144         || (x)==PIX_FMT_NV21        \
00145         || (x)==PIX_FMT_GRAY16BE    \
00146         || (x)==PIX_FMT_GRAY16LE    \
00147         || (x)==PIX_FMT_GRAY8       \
00148         || (x)==PIX_FMT_YUV410P     \
00149         || (x)==PIX_FMT_YUV440P     \
00150     )
00151 #define isPacked(x)         (       \
00152            (x)==PIX_FMT_PAL8        \
00153         || (x)==PIX_FMT_YUYV422     \
00154         || (x)==PIX_FMT_UYVY422     \
00155         || isRGB(x)                 \
00156         || isBGR(x)                 \
00157     )
00158 #define usePal(x)           (       \
00159            (x)==PIX_FMT_PAL8        \
00160         || (x)==PIX_FMT_BGR4_BYTE   \
00161         || (x)==PIX_FMT_RGB4_BYTE   \
00162         || (x)==PIX_FMT_BGR8        \
00163         || (x)==PIX_FMT_RGB8        \
00164     )
00165 
00166 #define RGB2YUV_SHIFT 15
00167 #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))
00168 #define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))
00169 #define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
00170 #define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))
00171 #define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))
00172 #define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))
00173 #define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))
00174 #define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
00175 #define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))
00176 
00177 extern const int32_t ff_yuv2rgb_coeffs[8][4];
00178 
00179 static const double rgb2yuv_table[8][9]={
00180     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},
00181     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},
00182     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
00183     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
00184     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC
00185     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
00186     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M
00187     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M
00188 };
00189 
00190 /*
00191 NOTES
00192 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
00193 
00194 TODO
00195 more intelligent misalignment avoidance for the horizontal scaler
00196 write special vertical cubic upscale version
00197 optimize C code (YV12 / minmax)
00198 add support for packed pixel YUV input & output
00199 add support for Y8 output
00200 optimize BGR24 & BGR32
00201 add BGR4 output support
00202 write special BGR->BGR scaler
00203 */
00204 
00205 #if ARCH_X86 && CONFIG_GPL
00206 DECLARE_ASM_CONST(8, uint64_t, bF8)=       0xF8F8F8F8F8F8F8F8LL;
00207 DECLARE_ASM_CONST(8, uint64_t, bFC)=       0xFCFCFCFCFCFCFCFCLL;
00208 DECLARE_ASM_CONST(8, uint64_t, w10)=       0x0010001000100010LL;
00209 DECLARE_ASM_CONST(8, uint64_t, w02)=       0x0002000200020002LL;
00210 DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;
00211 DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;
00212 DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;
00213 DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;
00214 
00215 const DECLARE_ALIGNED(8, uint64_t, ff_dither4[2]) = {
00216         0x0103010301030103LL,
00217         0x0200020002000200LL,};
00218 
00219 const DECLARE_ALIGNED(8, uint64_t, ff_dither8[2]) = {
00220         0x0602060206020602LL,
00221         0x0004000400040004LL,};
00222 
00223 DECLARE_ASM_CONST(8, uint64_t, b16Mask)=   0x001F001F001F001FLL;
00224 DECLARE_ASM_CONST(8, uint64_t, g16Mask)=   0x07E007E007E007E0LL;
00225 DECLARE_ASM_CONST(8, uint64_t, r16Mask)=   0xF800F800F800F800LL;
00226 DECLARE_ASM_CONST(8, uint64_t, b15Mask)=   0x001F001F001F001FLL;
00227 DECLARE_ASM_CONST(8, uint64_t, g15Mask)=   0x03E003E003E003E0LL;
00228 DECLARE_ASM_CONST(8, uint64_t, r15Mask)=   0x7C007C007C007C00LL;
00229 
00230 DECLARE_ALIGNED(8, const uint64_t, ff_M24A)         = 0x00FF0000FF0000FFLL;
00231 DECLARE_ALIGNED(8, const uint64_t, ff_M24B)         = 0xFF0000FF0000FF00LL;
00232 DECLARE_ALIGNED(8, const uint64_t, ff_M24C)         = 0x0000FF0000FF0000LL;
00233 
00234 #ifdef FAST_BGR2YV12
00235 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000000210041000DULL;
00236 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000FFEEFFDC0038ULL;
00237 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00000038FFD2FFF8ULL;
00238 #else
00239 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000020E540830C8BULL;
00240 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000ED0FDAC23831ULL;
00241 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00003831D0E6F6EAULL;
00242 #endif /* FAST_BGR2YV12 */
00243 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset)  = 0x1010101010101010ULL;
00244 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;
00245 DECLARE_ALIGNED(8, const uint64_t, ff_w1111)        = 0x0001000100010001ULL;
00246 
00247 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY1Coeff) = 0x0C88000040870C88ULL;
00248 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY2Coeff) = 0x20DE4087000020DEULL;
00249 DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY1Coeff) = 0x20DE0000408720DEULL;
00250 DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY2Coeff) = 0x0C88408700000C88ULL;
00251 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toYOffset) = 0x0008400000084000ULL;
00252 
00253 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUV[2][4]) = {
00254     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},
00255     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},
00256 };
00257 
00258 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;
00259 
00260 #endif /* ARCH_X86 && CONFIG_GPL */
00261 
00262 // clipping helper table for C implementations:
00263 static unsigned char clip_table[768];
00264 
00265 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
00266 
00267 static const uint8_t  __attribute__((aligned(8))) dither_2x2_4[2][8]={
00268 {  1,   3,   1,   3,   1,   3,   1,   3, },
00269 {  2,   0,   2,   0,   2,   0,   2,   0, },
00270 };
00271 
00272 static const uint8_t  __attribute__((aligned(8))) dither_2x2_8[2][8]={
00273 {  6,   2,   6,   2,   6,   2,   6,   2, },
00274 {  0,   4,   0,   4,   0,   4,   0,   4, },
00275 };
00276 
00277 const uint8_t  __attribute__((aligned(8))) dither_8x8_32[8][8]={
00278 { 17,   9,  23,  15,  16,   8,  22,  14, },
00279 {  5,  29,   3,  27,   4,  28,   2,  26, },
00280 { 21,  13,  19,  11,  20,  12,  18,  10, },
00281 {  0,  24,   6,  30,   1,  25,   7,  31, },
00282 { 16,   8,  22,  14,  17,   9,  23,  15, },
00283 {  4,  28,   2,  26,   5,  29,   3,  27, },
00284 { 20,  12,  18,  10,  21,  13,  19,  11, },
00285 {  1,  25,   7,  31,   0,  24,   6,  30, },
00286 };
00287 
00288 #if 0
00289 const uint8_t  __attribute__((aligned(8))) dither_8x8_64[8][8]={
00290 {  0,  48,  12,  60,   3,  51,  15,  63, },
00291 { 32,  16,  44,  28,  35,  19,  47,  31, },
00292 {  8,  56,   4,  52,  11,  59,   7,  55, },
00293 { 40,  24,  36,  20,  43,  27,  39,  23, },
00294 {  2,  50,  14,  62,   1,  49,  13,  61, },
00295 { 34,  18,  46,  30,  33,  17,  45,  29, },
00296 { 10,  58,   6,  54,   9,  57,   5,  53, },
00297 { 42,  26,  38,  22,  41,  25,  37,  21, },
00298 };
00299 #endif
00300 
00301 const uint8_t  __attribute__((aligned(8))) dither_8x8_73[8][8]={
00302 {  0,  55,  14,  68,   3,  58,  17,  72, },
00303 { 37,  18,  50,  32,  40,  22,  54,  35, },
00304 {  9,  64,   5,  59,  13,  67,   8,  63, },
00305 { 46,  27,  41,  23,  49,  31,  44,  26, },
00306 {  2,  57,  16,  71,   1,  56,  15,  70, },
00307 { 39,  21,  52,  34,  38,  19,  51,  33, },
00308 { 11,  66,   7,  62,  10,  65,   6,  60, },
00309 { 48,  30,  43,  25,  47,  29,  42,  24, },
00310 };
00311 
00312 #if 0
00313 const uint8_t  __attribute__((aligned(8))) dither_8x8_128[8][8]={
00314 { 68,  36,  92,  60,  66,  34,  90,  58, },
00315 { 20, 116,  12, 108,  18, 114,  10, 106, },
00316 { 84,  52,  76,  44,  82,  50,  74,  42, },
00317 {  0,  96,  24, 120,   6, 102,  30, 126, },
00318 { 64,  32,  88,  56,  70,  38,  94,  62, },
00319 { 16, 112,   8, 104,  22, 118,  14, 110, },
00320 { 80,  48,  72,  40,  86,  54,  78,  46, },
00321 {  4, 100,  28, 124,   2,  98,  26, 122, },
00322 };
00323 #endif
00324 
00325 #if 1
00326 const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
00327 {117,  62, 158, 103, 113,  58, 155, 100, },
00328 { 34, 199,  21, 186,  31, 196,  17, 182, },
00329 {144,  89, 131,  76, 141,  86, 127,  72, },
00330 {  0, 165,  41, 206,  10, 175,  52, 217, },
00331 {110,  55, 151,  96, 120,  65, 162, 107, },
00332 { 28, 193,  14, 179,  38, 203,  24, 189, },
00333 {138,  83, 124,  69, 148,  93, 134,  79, },
00334 {  7, 172,  48, 213,   3, 168,  45, 210, },
00335 };
00336 #elif 1
00337 // tries to correct a gamma of 1.5
00338 const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
00339 {  0, 143,  18, 200,   2, 156,  25, 215, },
00340 { 78,  28, 125,  64,  89,  36, 138,  74, },
00341 { 10, 180,   3, 161,  16, 195,   8, 175, },
00342 {109,  51,  93,  38, 121,  60, 105,  47, },
00343 {  1, 152,  23, 210,   0, 147,  20, 205, },
00344 { 85,  33, 134,  71,  81,  30, 130,  67, },
00345 { 14, 190,   6, 171,  12, 185,   5, 166, },
00346 {117,  57, 101,  44, 113,  54,  97,  41, },
00347 };
00348 #elif 1
00349 // tries to correct a gamma of 2.0
00350 const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
00351 {  0, 124,   8, 193,   0, 140,  12, 213, },
00352 { 55,  14, 104,  42,  66,  19, 119,  52, },
00353 {  3, 168,   1, 145,   6, 187,   3, 162, },
00354 { 86,  31,  70,  21,  99,  39,  82,  28, },
00355 {  0, 134,  11, 206,   0, 129,   9, 200, },
00356 { 62,  17, 114,  48,  58,  16, 109,  45, },
00357 {  5, 181,   2, 157,   4, 175,   1, 151, },
00358 { 95,  36,  78,  26,  90,  34,  74,  24, },
00359 };
00360 #else
00361 // tries to correct a gamma of 2.5
00362 const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
00363 {  0, 107,   3, 187,   0, 125,   6, 212, },
00364 { 39,   7,  86,  28,  49,  11, 102,  36, },
00365 {  1, 158,   0, 131,   3, 180,   1, 151, },
00366 { 68,  19,  52,  12,  81,  25,  64,  17, },
00367 {  0, 119,   5, 203,   0, 113,   4, 195, },
00368 { 45,   9,  96,  33,  42,   8,  91,  30, },
00369 {  2, 172,   1, 144,   2, 165,   0, 137, },
00370 { 77,  23,  60,  15,  72,  21,  56,  14, },
00371 };
00372 #endif
00373 
00374 const char *sws_format_name(enum PixelFormat format)
00375 {
00376     switch (format) {
00377         case PIX_FMT_YUV420P:
00378             return "yuv420p";
00379         case PIX_FMT_YUVA420P:
00380             return "yuva420p";
00381         case PIX_FMT_YUYV422:
00382             return "yuyv422";
00383         case PIX_FMT_RGB24:
00384             return "rgb24";
00385         case PIX_FMT_BGR24:
00386             return "bgr24";
00387         case PIX_FMT_YUV422P:
00388             return "yuv422p";
00389         case PIX_FMT_YUV444P:
00390             return "yuv444p";
00391         case PIX_FMT_RGB32:
00392             return "rgb32";
00393         case PIX_FMT_YUV410P:
00394             return "yuv410p";
00395         case PIX_FMT_YUV411P:
00396             return "yuv411p";
00397         case PIX_FMT_RGB565:
00398             return "rgb565";
00399         case PIX_FMT_RGB555:
00400             return "rgb555";
00401         case PIX_FMT_GRAY16BE:
00402             return "gray16be";
00403         case PIX_FMT_GRAY16LE:
00404             return "gray16le";
00405         case PIX_FMT_GRAY8:
00406             return "gray8";
00407         case PIX_FMT_MONOWHITE:
00408             return "mono white";
00409         case PIX_FMT_MONOBLACK:
00410             return "mono black";
00411         case PIX_FMT_PAL8:
00412             return "Palette";
00413         case PIX_FMT_YUVJ420P:
00414             return "yuvj420p";
00415         case PIX_FMT_YUVJ422P:
00416             return "yuvj422p";
00417         case PIX_FMT_YUVJ444P:
00418             return "yuvj444p";
00419         case PIX_FMT_XVMC_MPEG2_MC:
00420             return "xvmc_mpeg2_mc";
00421         case PIX_FMT_XVMC_MPEG2_IDCT:
00422             return "xvmc_mpeg2_idct";
00423         case PIX_FMT_UYVY422:
00424             return "uyvy422";
00425         case PIX_FMT_UYYVYY411:
00426             return "uyyvyy411";
00427         case PIX_FMT_RGB32_1:
00428             return "rgb32x";
00429         case PIX_FMT_BGR32_1:
00430             return "bgr32x";
00431         case PIX_FMT_BGR32:
00432             return "bgr32";
00433         case PIX_FMT_BGR565:
00434             return "bgr565";
00435         case PIX_FMT_BGR555:
00436             return "bgr555";
00437         case PIX_FMT_BGR8:
00438             return "bgr8";
00439         case PIX_FMT_BGR4:
00440             return "bgr4";
00441         case PIX_FMT_BGR4_BYTE:
00442             return "bgr4 byte";
00443         case PIX_FMT_RGB8:
00444             return "rgb8";
00445         case PIX_FMT_RGB4:
00446             return "rgb4";
00447         case PIX_FMT_RGB4_BYTE:
00448             return "rgb4 byte";
00449         case PIX_FMT_NV12:
00450             return "nv12";
00451         case PIX_FMT_NV21:
00452             return "nv21";
00453         case PIX_FMT_YUV440P:
00454             return "yuv440p";
00455         case PIX_FMT_VDPAU_H264:
00456             return "vdpau_h264";
00457         case PIX_FMT_VDPAU_MPEG1:
00458             return "vdpau_mpeg1";
00459         case PIX_FMT_VDPAU_MPEG2:
00460             return "vdpau_mpeg2";
00461         case PIX_FMT_VDPAU_WMV3:
00462             return "vdpau_wmv3";
00463         case PIX_FMT_VDPAU_VC1:
00464             return "vdpau_vc1";
00465         default:
00466             return "Unknown format";
00467     }
00468 }
00469 
00470 static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
00471                                int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
00472                                uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
00473 {
00474     //FIXME Optimize (just quickly written not optimized..)
00475     int i;
00476     for (i=0; i<dstW; i++)
00477     {
00478         int val=1<<18;
00479         int j;
00480         for (j=0; j<lumFilterSize; j++)
00481             val += lumSrc[j][i] * lumFilter[j];
00482 
00483         dest[i]= av_clip_uint8(val>>19);
00484     }
00485 
00486     if (uDest)
00487         for (i=0; i<chrDstW; i++)
00488         {
00489             int u=1<<18;
00490             int v=1<<18;
00491             int j;
00492             for (j=0; j<chrFilterSize; j++)
00493             {
00494                 u += chrSrc[j][i] * chrFilter[j];
00495                 v += chrSrc[j][i + VOFW] * chrFilter[j];
00496             }
00497 
00498             uDest[i]= av_clip_uint8(u>>19);
00499             vDest[i]= av_clip_uint8(v>>19);
00500         }
00501 }
00502 
00503 static inline void yuv2nv12XinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
00504                                 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
00505                                 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
00506 {
00507     //FIXME Optimize (just quickly written not optimized..)
00508     int i;
00509     for (i=0; i<dstW; i++)
00510     {
00511         int val=1<<18;
00512         int j;
00513         for (j=0; j<lumFilterSize; j++)
00514             val += lumSrc[j][i] * lumFilter[j];
00515 
00516         dest[i]= av_clip_uint8(val>>19);
00517     }
00518 
00519     if (!uDest)
00520         return;
00521 
00522     if (dstFormat == PIX_FMT_NV12)
00523         for (i=0; i<chrDstW; i++)
00524         {
00525             int u=1<<18;
00526             int v=1<<18;
00527             int j;
00528             for (j=0; j<chrFilterSize; j++)
00529             {
00530                 u += chrSrc[j][i] * chrFilter[j];
00531                 v += chrSrc[j][i + VOFW] * chrFilter[j];
00532             }
00533 
00534             uDest[2*i]= av_clip_uint8(u>>19);
00535             uDest[2*i+1]= av_clip_uint8(v>>19);
00536         }
00537     else
00538         for (i=0; i<chrDstW; i++)
00539         {
00540             int u=1<<18;
00541             int v=1<<18;
00542             int j;
00543             for (j=0; j<chrFilterSize; j++)
00544             {
00545                 u += chrSrc[j][i] * chrFilter[j];
00546                 v += chrSrc[j][i + VOFW] * chrFilter[j];
00547             }
00548 
00549             uDest[2*i]= av_clip_uint8(v>>19);
00550             uDest[2*i+1]= av_clip_uint8(u>>19);
00551         }
00552 }
00553 
00554 #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type) \
00555     for (i=0; i<(dstW>>1); i++){\
00556         int j;\
00557         int Y1 = 1<<18;\
00558         int Y2 = 1<<18;\
00559         int U  = 1<<18;\
00560         int V  = 1<<18;\
00561         type av_unused *r, *b, *g;\
00562         const int i2= 2*i;\
00563         \
00564         for (j=0; j<lumFilterSize; j++)\
00565         {\
00566             Y1 += lumSrc[j][i2] * lumFilter[j];\
00567             Y2 += lumSrc[j][i2+1] * lumFilter[j];\
00568         }\
00569         for (j=0; j<chrFilterSize; j++)\
00570         {\
00571             U += chrSrc[j][i] * chrFilter[j];\
00572             V += chrSrc[j][i+VOFW] * chrFilter[j];\
00573         }\
00574         Y1>>=19;\
00575         Y2>>=19;\
00576         U >>=19;\
00577         V >>=19;\
00578 
00579 #define YSCALE_YUV_2_PACKEDX_C(type) \
00580         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type)\
00581         if ((Y1|Y2|U|V)&256)\
00582         {\
00583             if (Y1>255)   Y1=255; \
00584             else if (Y1<0)Y1=0;   \
00585             if (Y2>255)   Y2=255; \
00586             else if (Y2<0)Y2=0;   \
00587             if (U>255)    U=255;  \
00588             else if (U<0) U=0;    \
00589             if (V>255)    V=255;  \
00590             else if (V<0) V=0;    \
00591         }
00592 
00593 #define YSCALE_YUV_2_PACKEDX_FULL_C \
00594     for (i=0; i<dstW; i++){\
00595         int j;\
00596         int Y = 0;\
00597         int U = -128<<19;\
00598         int V = -128<<19;\
00599         int R,G,B;\
00600         \
00601         for (j=0; j<lumFilterSize; j++){\
00602             Y += lumSrc[j][i     ] * lumFilter[j];\
00603         }\
00604         for (j=0; j<chrFilterSize; j++){\
00605             U += chrSrc[j][i     ] * chrFilter[j];\
00606             V += chrSrc[j][i+VOFW] * chrFilter[j];\
00607         }\
00608         Y >>=10;\
00609         U >>=10;\
00610         V >>=10;\
00611 
00612 #define YSCALE_YUV_2_RGBX_FULL_C(rnd) \
00613     YSCALE_YUV_2_PACKEDX_FULL_C\
00614         Y-= c->yuv2rgb_y_offset;\
00615         Y*= c->yuv2rgb_y_coeff;\
00616         Y+= rnd;\
00617         R= Y + V*c->yuv2rgb_v2r_coeff;\
00618         G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\
00619         B= Y +                          U*c->yuv2rgb_u2b_coeff;\
00620         if ((R|G|B)&(0xC0000000)){\
00621             if (R>=(256<<22))   R=(256<<22)-1; \
00622             else if (R<0)R=0;   \
00623             if (G>=(256<<22))   G=(256<<22)-1; \
00624             else if (G<0)G=0;   \
00625             if (B>=(256<<22))   B=(256<<22)-1; \
00626             else if (B<0)B=0;   \
00627         }\
00628 
00629 
00630 #define YSCALE_YUV_2_GRAY16_C \
00631     for (i=0; i<(dstW>>1); i++){\
00632         int j;\
00633         int Y1 = 1<<18;\
00634         int Y2 = 1<<18;\
00635         int U  = 1<<18;\
00636         int V  = 1<<18;\
00637         \
00638         const int i2= 2*i;\
00639         \
00640         for (j=0; j<lumFilterSize; j++)\
00641         {\
00642             Y1 += lumSrc[j][i2] * lumFilter[j];\
00643             Y2 += lumSrc[j][i2+1] * lumFilter[j];\
00644         }\
00645         Y1>>=11;\
00646         Y2>>=11;\
00647         if ((Y1|Y2|U|V)&65536)\
00648         {\
00649             if (Y1>65535)   Y1=65535; \
00650             else if (Y1<0)Y1=0;   \
00651             if (Y2>65535)   Y2=65535; \
00652             else if (Y2<0)Y2=0;   \
00653         }
00654 
00655 #define YSCALE_YUV_2_RGBX_C(type) \
00656     YSCALE_YUV_2_PACKEDX_C(type)  /* FIXME fix tables so that clipping is not needed and then use _NOCLIP*/\
00657     r = (type *)c->table_rV[V];   \
00658     g = (type *)(c->table_gU[U] + c->table_gV[V]); \
00659     b = (type *)c->table_bU[U];   \
00660 
00661 #define YSCALE_YUV_2_PACKED2_C   \
00662     for (i=0; i<(dstW>>1); i++){ \
00663         const int i2= 2*i;       \
00664         int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>19;           \
00665         int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;           \
00666         int U= (uvbuf0[i     ]*uvalpha1+uvbuf1[i     ]*uvalpha)>>19;  \
00667         int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19;  \
00668 
00669 #define YSCALE_YUV_2_GRAY16_2_C   \
00670     for (i=0; i<(dstW>>1); i++){ \
00671         const int i2= 2*i;       \
00672         int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>11;           \
00673         int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11;           \
00674 
00675 #define YSCALE_YUV_2_RGB2_C(type) \
00676     YSCALE_YUV_2_PACKED2_C\
00677     type *r, *b, *g;\
00678     r = (type *)c->table_rV[V];\
00679     g = (type *)(c->table_gU[U] + c->table_gV[V]);\
00680     b = (type *)c->table_bU[U];\
00681 
00682 #define YSCALE_YUV_2_PACKED1_C \
00683     for (i=0; i<(dstW>>1); i++){\
00684         const int i2= 2*i;\
00685         int Y1= buf0[i2  ]>>7;\
00686         int Y2= buf0[i2+1]>>7;\
00687         int U= (uvbuf1[i     ])>>7;\
00688         int V= (uvbuf1[i+VOFW])>>7;\
00689 
00690 #define YSCALE_YUV_2_GRAY16_1_C \
00691     for (i=0; i<(dstW>>1); i++){\
00692         const int i2= 2*i;\
00693         int Y1= buf0[i2  ]<<1;\
00694         int Y2= buf0[i2+1]<<1;\
00695 
00696 #define YSCALE_YUV_2_RGB1_C(type) \
00697     YSCALE_YUV_2_PACKED1_C\
00698     type *r, *b, *g;\
00699     r = (type *)c->table_rV[V];\
00700     g = (type *)(c->table_gU[U] + c->table_gV[V]);\
00701     b = (type *)c->table_bU[U];\
00702 
00703 #define YSCALE_YUV_2_PACKED1B_C \
00704     for (i=0; i<(dstW>>1); i++){\
00705         const int i2= 2*i;\
00706         int Y1= buf0[i2  ]>>7;\
00707         int Y2= buf0[i2+1]>>7;\
00708         int U= (uvbuf0[i     ] + uvbuf1[i     ])>>8;\
00709         int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\
00710 
00711 #define YSCALE_YUV_2_RGB1B_C(type) \
00712     YSCALE_YUV_2_PACKED1B_C\
00713     type *r, *b, *g;\
00714     r = (type *)c->table_rV[V];\
00715     g = (type *)(c->table_gU[U] + c->table_gV[V]);\
00716     b = (type *)c->table_bU[U];\
00717 
00718 #define YSCALE_YUV_2_MONO2_C \
00719     const uint8_t * const d128=dither_8x8_220[y&7];\
00720     uint8_t *g= c->table_gU[128] + c->table_gV[128];\
00721     for (i=0; i<dstW-7; i+=8){\
00722         int acc;\
00723         acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\
00724         acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
00725         acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
00726         acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
00727         acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
00728         acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
00729         acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
00730         acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
00731         ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
00732         dest++;\
00733     }\
00734 
00735 
00736 #define YSCALE_YUV_2_MONOX_C \
00737     const uint8_t * const d128=dither_8x8_220[y&7];\
00738     uint8_t *g= c->table_gU[128] + c->table_gV[128];\
00739     int acc=0;\
00740     for (i=0; i<dstW-1; i+=2){\
00741         int j;\
00742         int Y1=1<<18;\
00743         int Y2=1<<18;\
00744 \
00745         for (j=0; j<lumFilterSize; j++)\
00746         {\
00747             Y1 += lumSrc[j][i] * lumFilter[j];\
00748             Y2 += lumSrc[j][i+1] * lumFilter[j];\
00749         }\
00750         Y1>>=19;\
00751         Y2>>=19;\
00752         if ((Y1|Y2)&256)\
00753         {\
00754             if (Y1>255)   Y1=255;\
00755             else if (Y1<0)Y1=0;\
00756             if (Y2>255)   Y2=255;\
00757             else if (Y2<0)Y2=0;\
00758         }\
00759         acc+= acc + g[Y1+d128[(i+0)&7]];\
00760         acc+= acc + g[Y2+d128[(i+1)&7]];\
00761         if ((i&7)==6){\
00762             ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
00763             dest++;\
00764         }\
00765     }
00766 
00767 
00768 #define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\
00769     switch(c->dstFormat)\
00770     {\
00771     case PIX_FMT_RGB32:\
00772     case PIX_FMT_BGR32:\
00773     case PIX_FMT_RGB32_1:\
00774     case PIX_FMT_BGR32_1:\
00775         func(uint32_t)\
00776             ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
00777             ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
00778         }                \
00779         break;\
00780     case PIX_FMT_RGB24:\
00781         func(uint8_t)\
00782             ((uint8_t*)dest)[0]= r[Y1];\
00783             ((uint8_t*)dest)[1]= g[Y1];\
00784             ((uint8_t*)dest)[2]= b[Y1];\
00785             ((uint8_t*)dest)[3]= r[Y2];\
00786             ((uint8_t*)dest)[4]= g[Y2];\
00787             ((uint8_t*)dest)[5]= b[Y2];\
00788             dest+=6;\
00789         }\
00790         break;\
00791     case PIX_FMT_BGR24:\
00792         func(uint8_t)\
00793             ((uint8_t*)dest)[0]= b[Y1];\
00794             ((uint8_t*)dest)[1]= g[Y1];\
00795             ((uint8_t*)dest)[2]= r[Y1];\
00796             ((uint8_t*)dest)[3]= b[Y2];\
00797             ((uint8_t*)dest)[4]= g[Y2];\
00798             ((uint8_t*)dest)[5]= r[Y2];\
00799             dest+=6;\
00800         }\
00801         break;\
00802     case PIX_FMT_RGB565:\
00803     case PIX_FMT_BGR565:\
00804         {\
00805             const int dr1= dither_2x2_8[y&1    ][0];\
00806             const int dg1= dither_2x2_4[y&1    ][0];\
00807             const int db1= dither_2x2_8[(y&1)^1][0];\
00808             const int dr2= dither_2x2_8[y&1    ][1];\
00809             const int dg2= dither_2x2_4[y&1    ][1];\
00810             const int db2= dither_2x2_8[(y&1)^1][1];\
00811             func(uint16_t)\
00812                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
00813                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
00814             }\
00815         }\
00816         break;\
00817     case PIX_FMT_RGB555:\
00818     case PIX_FMT_BGR555:\
00819         {\
00820             const int dr1= dither_2x2_8[y&1    ][0];\
00821             const int dg1= dither_2x2_8[y&1    ][1];\
00822             const int db1= dither_2x2_8[(y&1)^1][0];\
00823             const int dr2= dither_2x2_8[y&1    ][1];\
00824             const int dg2= dither_2x2_8[y&1    ][0];\
00825             const int db2= dither_2x2_8[(y&1)^1][1];\
00826             func(uint16_t)\
00827                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
00828                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
00829             }\
00830         }\
00831         break;\
00832     case PIX_FMT_RGB8:\
00833     case PIX_FMT_BGR8:\
00834         {\
00835             const uint8_t * const d64= dither_8x8_73[y&7];\
00836             const uint8_t * const d32= dither_8x8_32[y&7];\
00837             func(uint8_t)\
00838                 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
00839                 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
00840             }\
00841         }\
00842         break;\
00843     case PIX_FMT_RGB4:\
00844     case PIX_FMT_BGR4:\
00845         {\
00846             const uint8_t * const d64= dither_8x8_73 [y&7];\
00847             const uint8_t * const d128=dither_8x8_220[y&7];\
00848             func(uint8_t)\
00849                 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
00850                                  + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
00851             }\
00852         }\
00853         break;\
00854     case PIX_FMT_RGB4_BYTE:\
00855     case PIX_FMT_BGR4_BYTE:\
00856         {\
00857             const uint8_t * const d64= dither_8x8_73 [y&7];\
00858             const uint8_t * const d128=dither_8x8_220[y&7];\
00859             func(uint8_t)\
00860                 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
00861                 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
00862             }\
00863         }\
00864         break;\
00865     case PIX_FMT_MONOBLACK:\
00866     case PIX_FMT_MONOWHITE:\
00867         {\
00868             func_monoblack\
00869         }\
00870         break;\
00871     case PIX_FMT_YUYV422:\
00872         func2\
00873             ((uint8_t*)dest)[2*i2+0]= Y1;\
00874             ((uint8_t*)dest)[2*i2+1]= U;\
00875             ((uint8_t*)dest)[2*i2+2]= Y2;\
00876             ((uint8_t*)dest)[2*i2+3]= V;\
00877         }                \
00878         break;\
00879     case PIX_FMT_UYVY422:\
00880         func2\
00881             ((uint8_t*)dest)[2*i2+0]= U;\
00882             ((uint8_t*)dest)[2*i2+1]= Y1;\
00883             ((uint8_t*)dest)[2*i2+2]= V;\
00884             ((uint8_t*)dest)[2*i2+3]= Y2;\
00885         }                \
00886         break;\
00887     case PIX_FMT_GRAY16BE:\
00888         func_g16\
00889             ((uint8_t*)dest)[2*i2+0]= Y1>>8;\
00890             ((uint8_t*)dest)[2*i2+1]= Y1;\
00891             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\
00892             ((uint8_t*)dest)[2*i2+3]= Y2;\
00893         }                \
00894         break;\
00895     case PIX_FMT_GRAY16LE:\
00896         func_g16\
00897             ((uint8_t*)dest)[2*i2+0]= Y1;\
00898             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\
00899             ((uint8_t*)dest)[2*i2+2]= Y2;\
00900             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\
00901         }                \
00902         break;\
00903     }\
00904 
00905 
00906 static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
00907                                   int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
00908                                   uint8_t *dest, int dstW, int y)
00909 {
00910     int i;
00911     YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)
00912 }
00913 
00914 static inline void yuv2rgbXinC_full(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
00915                                     int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
00916                                     uint8_t *dest, int dstW, int y)
00917 {
00918     int i;
00919     int step= fmt_depth(c->dstFormat)/8;
00920     int aidx= 3;
00921 
00922     switch(c->dstFormat){
00923     case PIX_FMT_ARGB:
00924         dest++;
00925         aidx= -1;
00926     case PIX_FMT_RGB24:
00927         aidx--;
00928     case PIX_FMT_RGBA:
00929         YSCALE_YUV_2_RGBX_FULL_C(1<<21)
00930             dest[aidx]= 255;
00931             dest[0]= R>>22;
00932             dest[1]= G>>22;
00933             dest[2]= B>>22;
00934             dest+= step;
00935         }
00936         break;
00937     case PIX_FMT_ABGR:
00938         dest++;
00939         aidx= -1;
00940     case PIX_FMT_BGR24:
00941         aidx--;
00942     case PIX_FMT_BGRA:
00943         YSCALE_YUV_2_RGBX_FULL_C(1<<21)
00944             dest[aidx]= 255;
00945             dest[0]= B>>22;
00946             dest[1]= G>>22;
00947             dest[2]= R>>22;
00948             dest+= step;
00949         }
00950         break;
00951     default:
00952         assert(0);
00953     }
00954 }
00955 
00956 //Note: we have C, X86, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one
00957 //Plain C versions
00958 #if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT
00959 #define COMPILE_C
00960 #endif
00961 
00962 #if ARCH_PPC
00963 #if HAVE_ALTIVEC
00964 #define COMPILE_ALTIVEC
00965 #endif
00966 #endif //ARCH_PPC
00967 
00968 #if ARCH_X86
00969 
00970 #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
00971 #define COMPILE_MMX
00972 #endif
00973 
00974 #if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
00975 #define COMPILE_MMX2
00976 #endif
00977 
00978 #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
00979 #define COMPILE_3DNOW
00980 #endif
00981 #endif //ARCH_X86
00982 
00983 #undef HAVE_MMX
00984 #undef HAVE_MMX2
00985 #undef HAVE_AMD3DNOW
00986 #undef HAVE_ALTIVEC
00987 #define HAVE_MMX 0
00988 #define HAVE_MMX2 0
00989 #define HAVE_AMD3DNOW 0
00990 #define HAVE_ALTIVEC 0
00991 
00992 #ifdef COMPILE_C
00993 #define RENAME(a) a ## _C
00994 #include "swscale_template.c"
00995 #endif
00996 
00997 #ifdef COMPILE_ALTIVEC
00998 #undef RENAME
00999 #undef HAVE_ALTIVEC
01000 #define HAVE_ALTIVEC 1
01001 #define RENAME(a) a ## _altivec
01002 #include "swscale_template.c"
01003 #endif
01004 
01005 #if ARCH_X86
01006 
01007 //x86 versions
01008 /*
01009 #undef RENAME
01010 #undef HAVE_MMX
01011 #undef HAVE_MMX2
01012 #undef HAVE_AMD3DNOW
01013 #define ARCH_X86
01014 #define RENAME(a) a ## _X86
01015 #include "swscale_template.c"
01016 */
01017 //MMX versions
01018 #ifdef COMPILE_MMX
01019 #undef RENAME
01020 #undef HAVE_MMX
01021 #undef HAVE_MMX2
01022 #undef HAVE_AMD3DNOW
01023 #define HAVE_MMX 1
01024 #define HAVE_MMX2 0
01025 #define HAVE_AMD3DNOW 0
01026 #define RENAME(a) a ## _MMX
01027 #include "swscale_template.c"
01028 #endif
01029 
01030 //MMX2 versions
01031 #ifdef COMPILE_MMX2
01032 #undef RENAME
01033 #undef HAVE_MMX
01034 #undef HAVE_MMX2
01035 #undef HAVE_AMD3DNOW
01036 #define HAVE_MMX 1
01037 #define HAVE_MMX2 1
01038 #define HAVE_AMD3DNOW 0
01039 #define RENAME(a) a ## _MMX2
01040 #include "swscale_template.c"
01041 #endif
01042 
01043 //3DNOW versions
01044 #ifdef COMPILE_3DNOW
01045 #undef RENAME
01046 #undef HAVE_MMX
01047 #undef HAVE_MMX2
01048 #undef HAVE_AMD3DNOW
01049 #define HAVE_MMX 1
01050 #define HAVE_MMX2 0
01051 #define HAVE_AMD3DNOW 1
01052 #define RENAME(a) a ## _3DNow
01053 #include "swscale_template.c"
01054 #endif
01055 
01056 #endif //ARCH_X86
01057 
01058 // minor note: the HAVE_xyz are messed up after this line so don't use them
01059 
01060 static double getSplineCoeff(double a, double b, double c, double d, double dist)
01061 {
01062 //    printf("%f %f %f %f %f\n", a,b,c,d,dist);
01063     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;
01064     else                return getSplineCoeff(        0.0,
01065                                              b+ 2.0*c + 3.0*d,
01066                                                     c + 3.0*d,
01067                                             -b- 3.0*c - 6.0*d,
01068                                             dist-1.0);
01069 }
01070 
01071 static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
01072                              int srcW, int dstW, int filterAlign, int one, int flags,
01073                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])
01074 {
01075     int i;
01076     int filterSize;
01077     int filter2Size;
01078     int minFilterSize;
01079     int64_t *filter=NULL;
01080     int64_t *filter2=NULL;
01081     const int64_t fone= 1LL<<54;
01082     int ret= -1;
01083 #if ARCH_X86
01084     if (flags & SWS_CPU_CAPS_MMX)
01085         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
01086 #endif
01087 
01088     // NOTE: the +1 is for the MMX scaler which reads over the end
01089     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));
01090 
01091     if (FFABS(xInc - 0x10000) <10) // unscaled
01092     {
01093         int i;
01094         filterSize= 1;
01095         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);
01096 
01097         for (i=0; i<dstW; i++)
01098         {
01099             filter[i*filterSize]= fone;
01100             (*filterPos)[i]=i;
01101         }
01102 
01103     }
01104     else if (flags&SWS_POINT) // lame looking point sampling mode
01105     {
01106         int i;
01107         int xDstInSrc;
01108         filterSize= 1;
01109         filter= av_malloc(dstW*sizeof(*filter)*filterSize);
01110 
01111         xDstInSrc= xInc/2 - 0x8000;
01112         for (i=0; i<dstW; i++)
01113         {
01114             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
01115 
01116             (*filterPos)[i]= xx;
01117             filter[i]= fone;
01118             xDstInSrc+= xInc;
01119         }
01120     }
01121     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
01122     {
01123         int i;
01124         int xDstInSrc;
01125         if      (flags&SWS_BICUBIC) filterSize= 4;
01126         else if (flags&SWS_X      ) filterSize= 4;
01127         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA
01128         filter= av_malloc(dstW*sizeof(*filter)*filterSize);
01129 
01130         xDstInSrc= xInc/2 - 0x8000;
01131         for (i=0; i<dstW; i++)
01132         {
01133             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
01134             int j;
01135 
01136             (*filterPos)[i]= xx;
01137                 //bilinear upscale / linear interpolate / area averaging
01138                 for (j=0; j<filterSize; j++)
01139                 {
01140                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);
01141                     if (coeff<0) coeff=0;
01142                     filter[i*filterSize + j]= coeff;
01143                     xx++;
01144                 }
01145             xDstInSrc+= xInc;
01146         }
01147     }
01148     else
01149     {
01150         int xDstInSrc;
01151         int sizeFactor;
01152 
01153         if      (flags&SWS_BICUBIC)      sizeFactor=  4;
01154         else if (flags&SWS_X)            sizeFactor=  8;
01155         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear
01156         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)
01157         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;
01158         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)
01159         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)
01160         else if (flags&SWS_BILINEAR)     sizeFactor=  2;
01161         else {
01162             sizeFactor= 0; //GCC warning killer
01163             assert(0);
01164         }
01165 
01166         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale
01167         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;
01168 
01169         if (filterSize > srcW-2) filterSize=srcW-2;
01170 
01171         filter= av_malloc(dstW*sizeof(*filter)*filterSize);
01172 
01173         xDstInSrc= xInc - 0x10000;
01174         for (i=0; i<dstW; i++)
01175         {
01176             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);
01177             int j;
01178             (*filterPos)[i]= xx;
01179             for (j=0; j<filterSize; j++)
01180             {
01181                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;
01182                 double floatd;
01183                 int64_t coeff;
01184 
01185                 if (xInc > 1<<16)
01186                     d= d*dstW/srcW;
01187                 floatd= d * (1.0/(1<<30));
01188 
01189                 if (flags & SWS_BICUBIC)
01190                 {
01191                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);
01192                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);
01193                     int64_t dd = ( d*d)>>30;
01194                     int64_t ddd= (dd*d)>>30;
01195 
01196                     if      (d < 1LL<<30)
01197                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);
01198                     else if (d < 1LL<<31)
01199                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);
01200                     else
01201                         coeff=0.0;
01202                     coeff *= fone>>(30+24);
01203                 }
01204 /*                else if (flags & SWS_X)
01205                 {
01206                     double p= param ? param*0.01 : 0.3;
01207                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;
01208                     coeff*= pow(2.0, - p*d*d);
01209                 }*/
01210                 else if (flags & SWS_X)
01211                 {
01212                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
01213                     double c;
01214 
01215                     if (floatd<1.0)
01216                         c = cos(floatd*PI);
01217                     else
01218                         c=-1.0;
01219                     if (c<0.0)      c= -pow(-c, A);
01220                     else            c=  pow( c, A);
01221                     coeff= (c*0.5 + 0.5)*fone;
01222                 }
01223                 else if (flags & SWS_AREA)
01224                 {
01225                     int64_t d2= d - (1<<29);
01226                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));
01227                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));
01228                     else coeff=0.0;
01229                     coeff *= fone>>(30+16);
01230                 }
01231                 else if (flags & SWS_GAUSS)
01232                 {
01233                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
01234                     coeff = (pow(2.0, - p*floatd*floatd))*fone;
01235                 }
01236                 else if (flags & SWS_SINC)
01237                 {
01238                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;
01239                 }
01240                 else if (flags & SWS_LANCZOS)
01241                 {
01242                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
01243                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;
01244                     if (floatd>p) coeff=0;
01245                 }
01246                 else if (flags & SWS_BILINEAR)
01247                 {
01248                     coeff= (1<<30) - d;
01249                     if (coeff<0) coeff=0;
01250                     coeff *= fone >> 30;
01251                 }
01252                 else if (flags & SWS_SPLINE)
01253                 {
01254                     double p=-2.196152422706632;
01255                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;
01256                 }
01257                 else {
01258                     coeff= 0.0; //GCC warning killer
01259                     assert(0);
01260                 }
01261 
01262                 filter[i*filterSize + j]= coeff;
01263                 xx++;
01264             }
01265             xDstInSrc+= 2*xInc;
01266         }
01267     }
01268 
01269     /* apply src & dst Filter to filter -> filter2
01270        av_free(filter);
01271     */
01272     assert(filterSize>0);
01273     filter2Size= filterSize;
01274     if (srcFilter) filter2Size+= srcFilter->length - 1;
01275     if (dstFilter) filter2Size+= dstFilter->length - 1;
01276     assert(filter2Size>0);
01277     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));
01278 
01279     for (i=0; i<dstW; i++)
01280     {
01281         int j, k;
01282 
01283         if(srcFilter){
01284             for (k=0; k<srcFilter->length; k++){
01285                 for (j=0; j<filterSize; j++)
01286                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];
01287             }
01288         }else{
01289             for (j=0; j<filterSize; j++)
01290                 filter2[i*filter2Size + j]= filter[i*filterSize + j];
01291         }
01292         //FIXME dstFilter
01293 
01294         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
01295     }
01296     av_freep(&filter);
01297 
01298     /* try to reduce the filter-size (step1 find size and shift left) */
01299     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
01300     minFilterSize= 0;
01301     for (i=dstW-1; i>=0; i--)
01302     {
01303         int min= filter2Size;
01304         int j;
01305         int64_t cutOff=0.0;
01306 
01307         /* get rid off near zero elements on the left by shifting left */
01308         for (j=0; j<filter2Size; j++)
01309         {
01310             int k;
01311             cutOff += FFABS(filter2[i*filter2Size]);
01312 
01313             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;
01314 
01315             /* preserve monotonicity because the core can't handle the filter otherwise */
01316             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
01317 
01318             // move filter coefficients left
01319             for (k=1; k<filter2Size; k++)
01320                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
01321             filter2[i*filter2Size + k - 1]= 0;
01322             (*filterPos)[i]++;
01323         }
01324 
01325         cutOff=0;
01326         /* count near zeros on the right */
01327         for (j=filter2Size-1; j>0; j--)
01328         {
01329             cutOff += FFABS(filter2[i*filter2Size + j]);
01330 
01331             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;
01332             min--;
01333         }
01334 
01335         if (min>minFilterSize) minFilterSize= min;
01336     }
01337 
01338     if (flags & SWS_CPU_CAPS_ALTIVEC) {
01339         // we can handle the special case 4,
01340         // so we don't want to go to the full 8
01341         if (minFilterSize < 5)
01342             filterAlign = 4;
01343 
01344         // We really don't want to waste our time
01345         // doing useless computation, so fall back on
01346         // the scalar C code for very small filters.
01347         // Vectorizing is worth it only if you have a
01348         // decent-sized vector.
01349         if (minFilterSize < 3)
01350             filterAlign = 1;
01351     }
01352 
01353     if (flags & SWS_CPU_CAPS_MMX) {
01354         // special case for unscaled vertical filtering
01355         if (minFilterSize == 1 && filterAlign == 2)
01356             filterAlign= 1;
01357     }
01358 
01359     assert(minFilterSize > 0);
01360     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
01361     assert(filterSize > 0);
01362     filter= av_malloc(filterSize*dstW*sizeof(*filter));
01363     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)
01364         goto error;
01365     *outFilterSize= filterSize;
01366 
01367     if (flags&SWS_PRINT_INFO)
01368         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
01369     /* try to reduce the filter-size (step2 reduce it) */
01370     for (i=0; i<dstW; i++)
01371     {
01372         int j;
01373 
01374         for (j=0; j<filterSize; j++)
01375         {
01376             if (j>=filter2Size) filter[i*filterSize + j]= 0;
01377             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];
01378             if((flags & SWS_BITEXACT) && j>=minFilterSize)
01379                 filter[i*filterSize + j]= 0;
01380         }
01381     }
01382 
01383 
01384     //FIXME try to align filterPos if possible
01385 
01386     //fix borders
01387     for (i=0; i<dstW; i++)
01388     {
01389         int j;
01390         if ((*filterPos)[i] < 0)
01391         {
01392             // move filter coefficients left to compensate for filterPos
01393             for (j=1; j<filterSize; j++)
01394             {
01395                 int left= FFMAX(j + (*filterPos)[i], 0);
01396                 filter[i*filterSize + left] += filter[i*filterSize + j];
01397                 filter[i*filterSize + j]=0;
01398             }
01399             (*filterPos)[i]= 0;
01400         }
01401 
01402         if ((*filterPos)[i] + filterSize > srcW)
01403         {
01404             int shift= (*filterPos)[i] + filterSize - srcW;
01405             // move filter coefficients right to compensate for filterPos
01406             for (j=filterSize-2; j>=0; j--)
01407             {
01408                 int right= FFMIN(j + shift, filterSize-1);
01409                 filter[i*filterSize +right] += filter[i*filterSize +j];
01410                 filter[i*filterSize +j]=0;
01411             }
01412             (*filterPos)[i]= srcW - filterSize;
01413         }
01414     }
01415 
01416     // Note the +1 is for the MMX scaler which reads over the end
01417     /* align at 16 for AltiVec (needed by hScale_altivec_real) */
01418     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));
01419 
01420     /* normalize & store in outFilter */
01421     for (i=0; i<dstW; i++)
01422     {
01423         int j;
01424         int64_t error=0;
01425         int64_t sum=0;
01426 
01427         for (j=0; j<filterSize; j++)
01428         {
01429             sum+= filter[i*filterSize + j];
01430         }
01431         sum= (sum + one/2)/ one;
01432         for (j=0; j<*outFilterSize; j++)
01433         {
01434             int64_t v= filter[i*filterSize + j] + error;
01435             int intV= ROUNDED_DIV(v, sum);
01436             (*outFilter)[i*(*outFilterSize) + j]= intV;
01437             error= v - intV*sum;
01438         }
01439     }
01440 
01441     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
01442     for (i=0; i<*outFilterSize; i++)
01443     {
01444         int j= dstW*(*outFilterSize);
01445         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
01446     }
01447 
01448     ret=0;
01449 error:
01450     av_free(filter);
01451     av_free(filter2);
01452     return ret;
01453 }
01454 
01455 #ifdef COMPILE_MMX2
01456 static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
01457 {
01458     uint8_t *fragmentA;
01459     long imm8OfPShufW1A;
01460     long imm8OfPShufW2A;
01461     long fragmentLengthA;
01462     uint8_t *fragmentB;
01463     long imm8OfPShufW1B;
01464     long imm8OfPShufW2B;
01465     long fragmentLengthB;
01466     int fragmentPos;
01467 
01468     int xpos, i;
01469 
01470     // create an optimized horizontal scaling routine
01471 
01472     //code fragment
01473 
01474     __asm__ volatile(
01475         "jmp                         9f                 \n\t"
01476     // Begin
01477         "0:                                             \n\t"
01478         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"
01479         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"
01480         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"
01481         "punpcklbw                %%mm7, %%mm1          \n\t"
01482         "punpcklbw                %%mm7, %%mm0          \n\t"
01483         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"
01484         "1:                                             \n\t"
01485         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"
01486         "2:                                             \n\t"
01487         "psubw                    %%mm1, %%mm0          \n\t"
01488         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"
01489         "pmullw                   %%mm3, %%mm0          \n\t"
01490         "psllw                       $7, %%mm1          \n\t"
01491         "paddw                    %%mm1, %%mm0          \n\t"
01492 
01493         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"
01494 
01495         "add                         $8, %%"REG_a"      \n\t"
01496     // End
01497         "9:                                             \n\t"
01498 //        "int $3                                         \n\t"
01499         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"
01500         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"
01501         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"
01502         "dec                         %1                 \n\t"
01503         "dec                         %2                 \n\t"
01504         "sub                         %0, %1             \n\t"
01505         "sub                         %0, %2             \n\t"
01506         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"
01507         "sub                         %0, %3             \n\t"
01508 
01509 
01510         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
01511         "=r" (fragmentLengthA)
01512     );
01513 
01514     __asm__ volatile(
01515         "jmp                         9f                 \n\t"
01516     // Begin
01517         "0:                                             \n\t"
01518         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"
01519         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"
01520         "punpcklbw                %%mm7, %%mm0          \n\t"
01521         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"
01522         "1:                                             \n\t"
01523         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"
01524         "2:                                             \n\t"
01525         "psubw                    %%mm1, %%mm0          \n\t"
01526         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"
01527         "pmullw                   %%mm3, %%mm0          \n\t"
01528         "psllw                       $7, %%mm1          \n\t"
01529         "paddw                    %%mm1, %%mm0          \n\t"
01530 
01531         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"
01532 
01533         "add                         $8, %%"REG_a"      \n\t"
01534     // End
01535         "9:                                             \n\t"
01536 //        "int                       $3                   \n\t"
01537         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"
01538         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"
01539         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"
01540         "dec                         %1                 \n\t"
01541         "dec                         %2                 \n\t"
01542         "sub                         %0, %1             \n\t"
01543         "sub                         %0, %2             \n\t"
01544         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"
01545         "sub                         %0, %3             \n\t"
01546 
01547 
01548         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
01549         "=r" (fragmentLengthB)
01550     );
01551 
01552     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
01553     fragmentPos=0;
01554 
01555     for (i=0; i<dstW/numSplits; i++)
01556     {
01557         int xx=xpos>>16;
01558 
01559         if ((i&3) == 0)
01560         {
01561             int a=0;
01562             int b=((xpos+xInc)>>16) - xx;
01563             int c=((xpos+xInc*2)>>16) - xx;
01564             int d=((xpos+xInc*3)>>16) - xx;
01565 
01566             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;
01567             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;
01568             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
01569             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
01570             filterPos[i/2]= xx;
01571 
01572             if (d+1<4)
01573             {
01574                 int maxShift= 3-(d+1);
01575                 int shift=0;
01576 
01577                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
01578 
01579                 funnyCode[fragmentPos + imm8OfPShufW1B]=
01580                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
01581                 funnyCode[fragmentPos + imm8OfPShufW2B]=
01582                     a | (b<<2) | (c<<4) | (d<<6);
01583 
01584                 if (i+3>=dstW) shift=maxShift; //avoid overread
01585                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
01586 
01587                 if (shift && i>=shift)
01588                 {
01589                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
01590                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
01591                     filterPos[i/2]-=shift;
01592                 }
01593 
01594                 fragmentPos+= fragmentLengthB;
01595             }
01596             else
01597             {
01598                 int maxShift= 3-d;
01599                 int shift=0;
01600 
01601                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
01602 
01603                 funnyCode[fragmentPos + imm8OfPShufW1A]=
01604                 funnyCode[fragmentPos + imm8OfPShufW2A]=
01605                     a | (b<<2) | (c<<4) | (d<<6);
01606 
01607                 if (i+4>=dstW) shift=maxShift; //avoid overread
01608                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
01609 
01610                 if (shift && i>=shift)
01611                 {
01612                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
01613                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
01614                     filterPos[i/2]-=shift;
01615                 }
01616 
01617                 fragmentPos+= fragmentLengthA;
01618             }
01619 
01620             funnyCode[fragmentPos]= RET;
01621         }
01622         xpos+=xInc;
01623     }
01624     filterPos[i/2]= xpos>>16; // needed to jump to the next part
01625 }
01626 #endif /* COMPILE_MMX2 */
01627 
01628 static void globalInit(void){
01629     // generating tables:
01630     int i;
01631     for (i=0; i<768; i++){
01632         int c= av_clip_uint8(i-256);
01633         clip_table[i]=c;
01634     }
01635 }
01636 
01637 static SwsFunc getSwsFunc(int flags){
01638 
01639 #if CONFIG_RUNTIME_CPUDETECT
01640 #if ARCH_X86 && CONFIG_GPL
01641     // ordered per speed fastest first
01642     if (flags & SWS_CPU_CAPS_MMX2)
01643         return swScale_MMX2;
01644     else if (flags & SWS_CPU_CAPS_3DNOW)
01645         return swScale_3DNow;
01646     else if (flags & SWS_CPU_CAPS_MMX)
01647         return swScale_MMX;
01648     else
01649         return swScale_C;
01650 
01651 #else
01652 #if ARCH_PPC && defined COMPILE_ALTIVEC
01653     if (flags & SWS_CPU_CAPS_ALTIVEC)
01654         return swScale_altivec;
01655     else
01656         return swScale_C;
01657 #endif
01658     return swScale_C;
01659 #endif /* ARCH_X86 && CONFIG_GPL */
01660 #else //CONFIG_RUNTIME_CPUDETECT
01661 #if   HAVE_MMX2
01662     return swScale_MMX2;
01663 #elif HAVE_AMD3DNOW
01664     return swScale_3DNow;
01665 #elif HAVE_MMX
01666     return swScale_MMX;
01667 #elif HAVE_ALTIVEC
01668     return swScale_altivec;
01669 #else
01670     return swScale_C;
01671 #endif
01672 #endif //!CONFIG_RUNTIME_CPUDETECT
01673 }
01674 
01675 static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01676                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){
01677     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
01678     /* Copy Y plane */
01679     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
01680         memcpy(dst, src[0], srcSliceH*dstStride[0]);
01681     else
01682     {
01683         int i;
01684         uint8_t *srcPtr= src[0];
01685         uint8_t *dstPtr= dst;
01686         for (i=0; i<srcSliceH; i++)
01687         {
01688             memcpy(dstPtr, srcPtr, c->srcW);
01689             srcPtr+= srcStride[0];
01690             dstPtr+= dstStride[0];
01691         }
01692     }
01693     dst = dstParam[1] + dstStride[1]*srcSliceY/2;
01694     if (c->dstFormat == PIX_FMT_NV12)
01695         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);
01696     else
01697         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);
01698 
01699     return srcSliceH;
01700 }
01701 
01702 static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01703                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){
01704     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
01705 
01706     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
01707 
01708     return srcSliceH;
01709 }
01710 
01711 static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01712                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){
01713     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
01714 
01715     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
01716 
01717     return srcSliceH;
01718 }
01719 
01720 static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01721                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
01722     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
01723 
01724     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
01725 
01726     return srcSliceH;
01727 }
01728 
01729 static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01730                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
01731     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
01732 
01733     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
01734 
01735     return srcSliceH;
01736 }
01737 
01738 static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01739                           int srcSliceH, uint8_t* dst[], int dstStride[]){
01740     const enum PixelFormat srcFormat= c->srcFormat;
01741     const enum PixelFormat dstFormat= c->dstFormat;
01742     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,
01743                  const uint8_t *palette)=NULL;
01744     int i;
01745     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
01746     uint8_t *srcPtr= src[0];
01747 
01748     if (!usePal(srcFormat))
01749         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
01750                sws_format_name(srcFormat), sws_format_name(dstFormat));
01751 
01752     switch(dstFormat){
01753     case PIX_FMT_RGB32  : conv = palette8topacked32; break;
01754     case PIX_FMT_BGR32  : conv = palette8topacked32; break;
01755     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;
01756     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;
01757     case PIX_FMT_RGB24  : conv = palette8topacked24; break;
01758     case PIX_FMT_BGR24  : conv = palette8topacked24; break;
01759     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
01760                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
01761     }
01762 
01763 
01764     for (i=0; i<srcSliceH; i++) {
01765         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
01766         srcPtr+= srcStride[0];
01767         dstPtr+= dstStride[0];
01768     }
01769 
01770     return srcSliceH;
01771 }
01772 
01773 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
01774 static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01775                           int srcSliceH, uint8_t* dst[], int dstStride[]){
01776     const enum PixelFormat srcFormat= c->srcFormat;
01777     const enum PixelFormat dstFormat= c->dstFormat;
01778     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;
01779     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;
01780     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
01781     const int dstId= fmt_depth(dstFormat) >> 2;
01782     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
01783 
01784     /* BGR -> BGR */
01785     if (  (isBGR(srcFormat) && isBGR(dstFormat))
01786        || (isRGB(srcFormat) && isRGB(dstFormat))){
01787         switch(srcId | (dstId<<4)){
01788         case 0x34: conv= rgb16to15; break;
01789         case 0x36: conv= rgb24to15; break;
01790         case 0x38: conv= rgb32to15; break;
01791         case 0x43: conv= rgb15to16; break;
01792         case 0x46: conv= rgb24to16; break;
01793         case 0x48: conv= rgb32to16; break;
01794         case 0x63: conv= rgb15to24; break;
01795         case 0x64: conv= rgb16to24; break;
01796         case 0x68: conv= rgb32to24; break;
01797         case 0x83: conv= rgb15to32; break;
01798         case 0x84: conv= rgb16to32; break;
01799         case 0x86: conv= rgb24to32; break;
01800         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
01801                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
01802         }
01803     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))
01804              || (isRGB(srcFormat) && isBGR(dstFormat))){
01805         switch(srcId | (dstId<<4)){
01806         case 0x33: conv= rgb15tobgr15; break;
01807         case 0x34: conv= rgb16tobgr15; break;
01808         case 0x36: conv= rgb24tobgr15; break;
01809         case 0x38: conv= rgb32tobgr15; break;
01810         case 0x43: conv= rgb15tobgr16; break;
01811         case 0x44: conv= rgb16tobgr16; break;
01812         case 0x46: conv= rgb24tobgr16; break;
01813         case 0x48: conv= rgb32tobgr16; break;
01814         case 0x63: conv= rgb15tobgr24; break;
01815         case 0x64: conv= rgb16tobgr24; break;
01816         case 0x66: conv= rgb24tobgr24; break;
01817         case 0x68: conv= rgb32tobgr24; break;
01818         case 0x83: conv= rgb15tobgr32; break;
01819         case 0x84: conv= rgb16tobgr32; break;
01820         case 0x86: conv= rgb24tobgr32; break;
01821         case 0x88: conv= rgb32tobgr32; break;
01822         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
01823                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
01824         }
01825     }else{
01826         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
01827                sws_format_name(srcFormat), sws_format_name(dstFormat));
01828     }
01829 
01830     if(conv)
01831     {
01832         uint8_t *srcPtr= src[0];
01833         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)
01834             srcPtr += ALT32_CORR;
01835 
01836         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
01837             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
01838         else
01839         {
01840             int i;
01841             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
01842 
01843             for (i=0; i<srcSliceH; i++)
01844             {
01845                 conv(srcPtr, dstPtr, c->srcW*srcBpp);
01846                 srcPtr+= srcStride[0];
01847                 dstPtr+= dstStride[0];
01848             }
01849         }
01850     }
01851     return srcSliceH;
01852 }
01853 
01854 static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01855                               int srcSliceH, uint8_t* dst[], int dstStride[]){
01856 
01857     rgb24toyv12(
01858         src[0],
01859         dst[0]+ srcSliceY    *dstStride[0],
01860         dst[1]+(srcSliceY>>1)*dstStride[1],
01861         dst[2]+(srcSliceY>>1)*dstStride[2],
01862         c->srcW, srcSliceH,
01863         dstStride[0], dstStride[1], srcStride[0]);
01864     return srcSliceH;
01865 }
01866 
01867 static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01868                              int srcSliceH, uint8_t* dst[], int dstStride[]){
01869     int i;
01870 
01871     /* copy Y */
01872     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)
01873         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
01874     else{
01875         uint8_t *srcPtr= src[0];
01876         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
01877 
01878         for (i=0; i<srcSliceH; i++)
01879         {
01880             memcpy(dstPtr, srcPtr, c->srcW);
01881             srcPtr+= srcStride[0];
01882             dstPtr+= dstStride[0];
01883         }
01884     }
01885 
01886     if (c->dstFormat==PIX_FMT_YUV420P){
01887         planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
01888         planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
01889     }else{
01890         planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
01891         planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
01892     }
01893     return srcSliceH;
01894 }
01895 
01896 /* unscaled copy like stuff (assumes nearly identical formats) */
01897 static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01898                       int srcSliceH, uint8_t* dst[], int dstStride[])
01899 {
01900     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
01901         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
01902     else
01903     {
01904         int i;
01905         uint8_t *srcPtr= src[0];
01906         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
01907         int length=0;
01908 
01909         /* universal length finder */
01910         while(length+c->srcW <= FFABS(dstStride[0])
01911            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
01912         assert(length!=0);
01913 
01914         for (i=0; i<srcSliceH; i++)
01915         {
01916             memcpy(dstPtr, srcPtr, length);
01917             srcPtr+= srcStride[0];
01918             dstPtr+= dstStride[0];
01919         }
01920     }
01921     return srcSliceH;
01922 }
01923 
01924 static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01925                       int srcSliceH, uint8_t* dst[], int dstStride[])
01926 {
01927     int plane;
01928     for (plane=0; plane<3; plane++)
01929     {
01930         int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);
01931         int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
01932         int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
01933 
01934         if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
01935         {
01936             if (!isGray(c->dstFormat))
01937                 memset(dst[plane], 128, dstStride[plane]*height);
01938         }
01939         else
01940         {
01941             if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
01942                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
01943             else
01944             {
01945                 int i;
01946                 uint8_t *srcPtr= src[plane];
01947                 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
01948                 for (i=0; i<height; i++)
01949                 {
01950                     memcpy(dstPtr, srcPtr, length);
01951                     srcPtr+= srcStride[plane];
01952                     dstPtr+= dstStride[plane];
01953                 }
01954             }
01955         }
01956     }
01957     return srcSliceH;
01958 }
01959 
01960 static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01961                         int srcSliceH, uint8_t* dst[], int dstStride[]){
01962 
01963     int length= c->srcW;
01964     int y=      srcSliceY;
01965     int height= srcSliceH;
01966     int i, j;
01967     uint8_t *srcPtr= src[0];
01968     uint8_t *dstPtr= dst[0] + dstStride[0]*y;
01969 
01970     if (!isGray(c->dstFormat)){
01971         int height= -((-srcSliceH)>>c->chrDstVSubSample);
01972         memset(dst[1], 128, dstStride[1]*height);
01973         memset(dst[2], 128, dstStride[2]*height);
01974     }
01975     if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;
01976     for (i=0; i<height; i++)
01977     {
01978         for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
01979         srcPtr+= srcStride[0];
01980         dstPtr+= dstStride[0];
01981     }
01982     return srcSliceH;
01983 }
01984 
01985 static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
01986                         int srcSliceH, uint8_t* dst[], int dstStride[]){
01987 
01988     int length= c->srcW;
01989     int y=      srcSliceY;
01990     int height= srcSliceH;
01991     int i, j;
01992     uint8_t *srcPtr= src[0];
01993     uint8_t *dstPtr= dst[0] + dstStride[0]*y;
01994     for (i=0; i<height; i++)
01995     {
01996         for (j=0; j<length; j++)
01997         {
01998             dstPtr[j<<1] = srcPtr[j];
01999             dstPtr[(j<<1)+1] = srcPtr[j];
02000         }
02001         srcPtr+= srcStride[0];
02002         dstPtr+= dstStride[0];
02003     }
02004     return srcSliceH;
02005 }
02006 
02007 static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
02008                       int srcSliceH, uint8_t* dst[], int dstStride[]){
02009 
02010     int length= c->srcW;
02011     int y=      srcSliceY;
02012     int height= srcSliceH;
02013     int i, j;
02014     uint16_t *srcPtr= (uint16_t*)src[0];
02015     uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);
02016     for (i=0; i<height; i++)
02017     {
02018         for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);
02019         srcPtr+= srcStride[0]/2;
02020         dstPtr+= dstStride[0]/2;
02021     }
02022     return srcSliceH;
02023 }
02024 
02025 
02026 static void getSubSampleFactors(int *h, int *v, int format){
02027     switch(format){
02028     case PIX_FMT_UYVY422:
02029     case PIX_FMT_YUYV422:
02030         *h=1;
02031         *v=0;
02032         break;
02033     case PIX_FMT_YUV420P:
02034     case PIX_FMT_YUVA420P:
02035     case PIX_FMT_GRAY16BE:
02036     case PIX_FMT_GRAY16LE:
02037     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented
02038     case PIX_FMT_NV12:
02039     case PIX_FMT_NV21:
02040         *h=1;
02041         *v=1;
02042         break;
02043     case PIX_FMT_YUV440P:
02044         *h=0;
02045         *v=1;
02046         break;
02047     case PIX_FMT_YUV410P:
02048         *h=2;
02049         *v=2;
02050         break;
02051     case PIX_FMT_YUV444P:
02052         *h=0;
02053         *v=0;
02054         break;
02055     case PIX_FMT_YUV422P:
02056         *h=1;
02057         *v=0;
02058         break;
02059     case PIX_FMT_YUV411P:
02060         *h=2;
02061         *v=0;
02062         break;
02063     default:
02064         *h=0;
02065         *v=0;
02066         break;
02067     }
02068 }
02069 
02070 static uint16_t roundToInt16(int64_t f){
02071     int r= (f + (1<<15))>>16;
02072          if (r<-0x7FFF) return 0x8000;
02073     else if (r> 0x7FFF) return 0x7FFF;
02074     else                return r;
02075 }
02076 
02082 int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){
02083     int64_t crv =  inv_table[0];
02084     int64_t cbu =  inv_table[1];
02085     int64_t cgu = -inv_table[2];
02086     int64_t cgv = -inv_table[3];
02087     int64_t cy  = 1<<16;
02088     int64_t oy  = 0;
02089 
02090     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
02091     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);
02092 
02093     c->brightness= brightness;
02094     c->contrast  = contrast;
02095     c->saturation= saturation;
02096     c->srcRange  = srcRange;
02097     c->dstRange  = dstRange;
02098     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return 0;
02099 
02100     c->uOffset=   0x0400040004000400LL;
02101     c->vOffset=   0x0400040004000400LL;
02102 
02103     if (!srcRange){
02104         cy= (cy*255) / 219;
02105         oy= 16<<16;
02106     }else{
02107         crv= (crv*224) / 255;
02108         cbu= (cbu*224) / 255;
02109         cgu= (cgu*224) / 255;
02110         cgv= (cgv*224) / 255;
02111     }
02112 
02113     cy = (cy *contrast             )>>16;
02114     crv= (crv*contrast * saturation)>>32;
02115     cbu= (cbu*contrast * saturation)>>32;
02116     cgu= (cgu*contrast * saturation)>>32;
02117     cgv= (cgv*contrast * saturation)>>32;
02118 
02119     oy -= 256*brightness;
02120 
02121     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;
02122     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;
02123     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;
02124     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;
02125     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;
02126     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;
02127 
02128     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);
02129     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);
02130     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);
02131     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);
02132     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);
02133     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);
02134 
02135     sws_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
02136     //FIXME factorize
02137 
02138 #ifdef COMPILE_ALTIVEC
02139     if (c->flags & SWS_CPU_CAPS_ALTIVEC)
02140         sws_yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);
02141 #endif
02142     return 0;
02143 }
02144 
02148 int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){
02149     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
02150 
02151     *inv_table = c->srcColorspaceTable;
02152     *table     = c->dstColorspaceTable;
02153     *srcRange  = c->srcRange;
02154     *dstRange  = c->dstRange;
02155     *brightness= c->brightness;
02156     *contrast  = c->contrast;
02157     *saturation= c->saturation;
02158 
02159     return 0;
02160 }
02161 
02162 static int handle_jpeg(enum PixelFormat *format)
02163 {
02164     switch (*format) {
02165         case PIX_FMT_YUVJ420P:
02166             *format = PIX_FMT_YUV420P;
02167             return 1;
02168         case PIX_FMT_YUVJ422P:
02169             *format = PIX_FMT_YUV422P;
02170             return 1;
02171         case PIX_FMT_YUVJ444P:
02172             *format = PIX_FMT_YUV444P;
02173             return 1;
02174         case PIX_FMT_YUVJ440P:
02175             *format = PIX_FMT_YUV440P;
02176             return 1;
02177         default:
02178             return 0;
02179     }
02180 }
02181 
02182 SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,
02183                            SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){
02184 
02185     SwsContext *c;
02186     int i;
02187     int usesVFilter, usesHFilter;
02188     int unscaled, needsDither;
02189     int srcRange, dstRange;
02190     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
02191 #if ARCH_X86
02192     if (flags & SWS_CPU_CAPS_MMX)
02193         __asm__ volatile("emms\n\t"::: "memory");
02194 #endif
02195 
02196 #if !CONFIG_RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off
02197     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
02198 #if   HAVE_MMX2
02199     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
02200 #elif HAVE_AMD3DNOW
02201     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
02202 #elif HAVE_MMX
02203     flags |= SWS_CPU_CAPS_MMX;
02204 #elif HAVE_ALTIVEC
02205     flags |= SWS_CPU_CAPS_ALTIVEC;
02206 #elif ARCH_BFIN
02207     flags |= SWS_CPU_CAPS_BFIN;
02208 #endif
02209 #endif /* CONFIG_RUNTIME_CPUDETECT */
02210     if (clip_table[512] != 255) globalInit();
02211     if (!rgb15to16) sws_rgb2rgb_init(flags);
02212 
02213     unscaled = (srcW == dstW && srcH == dstH);
02214     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
02215         && (fmt_depth(dstFormat))<24
02216         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
02217 
02218     srcRange = handle_jpeg(&srcFormat);
02219     dstRange = handle_jpeg(&dstFormat);
02220 
02221     if (!isSupportedIn(srcFormat))
02222     {
02223         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));
02224         return NULL;
02225     }
02226     if (!isSupportedOut(dstFormat))
02227     {
02228         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));
02229         return NULL;
02230     }
02231 
02232     i= flags & ( SWS_POINT
02233                 |SWS_AREA
02234                 |SWS_BILINEAR
02235                 |SWS_FAST_BILINEAR
02236                 |SWS_BICUBIC
02237                 |SWS_X
02238                 |SWS_GAUSS
02239                 |SWS_LANCZOS
02240                 |SWS_SINC
02241                 |SWS_SPLINE
02242                 |SWS_BICUBLIN);
02243     if(!i || (i & (i-1)))
02244     {
02245         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");
02246         return NULL;
02247     }
02248 
02249     /* sanity check */
02250     if (srcW<4 || srcH<1 || dstW<8 || dstH<1) //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code
02251     {
02252         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
02253                srcW, srcH, dstW, dstH);
02254         return NULL;
02255     }
02256     if(srcW > VOFW || dstW > VOFW){
02257         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");
02258         return NULL;
02259     }
02260 
02261     if (!dstFilter) dstFilter= &dummyFilter;
02262     if (!srcFilter) srcFilter= &dummyFilter;
02263 
02264     c= av_mallocz(sizeof(SwsContext));
02265 
02266     c->av_class = &sws_context_class;
02267     c->srcW= srcW;
02268     c->srcH= srcH;
02269     c->dstW= dstW;
02270     c->dstH= dstH;
02271     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
02272     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
02273     c->flags= flags;
02274     c->dstFormat= dstFormat;
02275     c->srcFormat= srcFormat;
02276     c->vRounder= 4* 0x0001000100010001ULL;
02277 
02278     usesHFilter= usesVFilter= 0;
02279     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;
02280     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;
02281     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;
02282     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;
02283     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;
02284     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;
02285     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;
02286     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;
02287 
02288     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
02289     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
02290 
02291     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation
02292     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
02293 
02294     // drop some chroma lines if the user wants it
02295     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
02296     c->chrSrcVSubSample+= c->vChrDrop;
02297 
02298     // drop every other pixel for chroma calculation unless user wants full chroma
02299     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)
02300       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8
02301       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4
02302       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE
02303       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))
02304         c->chrSrcHSubSample=1;
02305 
02306     if (param){
02307         c->param[0] = param[0];
02308         c->param[1] = param[1];
02309     }else{
02310         c->param[0] =
02311         c->param[1] = SWS_PARAM_DEFAULT;
02312     }
02313 
02314     c->chrIntHSubSample= c->chrDstHSubSample;
02315     c->chrIntVSubSample= c->chrSrcVSubSample;
02316 
02317     // Note the -((-x)>>y) is so that we always round toward +inf.
02318     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
02319     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
02320     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
02321     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
02322 
02323     sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);
02324 
02325     /* unscaled special cases */
02326     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))
02327     {
02328         /* yv12_to_nv12 */
02329         if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))
02330         {
02331             c->swScale= PlanarToNV12Wrapper;
02332         }
02333         /* yuv2bgr */
02334         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))
02335             && !(flags & SWS_ACCURATE_RND) && !(dstH&1))
02336         {
02337             c->swScale= sws_yuv2rgb_get_func_ptr(c);
02338         }
02339 
02340         if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_BITEXACT))
02341         {
02342             c->swScale= yvu9toyv12Wrapper;
02343         }
02344 
02345         /* bgr24toYV12 */
02346         if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_ACCURATE_RND))
02347             c->swScale= bgr24toyv12Wrapper;
02348 
02349         /* RGB/BGR -> RGB/BGR (no dither needed forms) */
02350         if (  (isBGR(srcFormat) || isRGB(srcFormat))
02351            && (isBGR(dstFormat) || isRGB(dstFormat))
02352            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8
02353            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8
02354            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4
02355            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4
02356            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
02357            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
02358            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
02359            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE
02360                                              && dstFormat != PIX_FMT_RGB32_1
02361                                              && dstFormat != PIX_FMT_BGR32_1
02362            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
02363              c->swScale= rgb2rgbWrapper;
02364 
02365         if ((usePal(srcFormat) && (
02366                  dstFormat == PIX_FMT_RGB32   ||
02367                  dstFormat == PIX_FMT_RGB32_1 ||
02368                  dstFormat == PIX_FMT_RGB24   ||
02369                  dstFormat == PIX_FMT_BGR32   ||
02370                  dstFormat == PIX_FMT_BGR32_1 ||
02371                  dstFormat == PIX_FMT_BGR24)))
02372              c->swScale= pal2rgbWrapper;
02373 
02374         if (srcFormat == PIX_FMT_YUV422P)
02375         {
02376             if (dstFormat == PIX_FMT_YUYV422)
02377                 c->swScale= YUV422PToYuy2Wrapper;
02378             else if (dstFormat == PIX_FMT_UYVY422)
02379                 c->swScale= YUV422PToUyvyWrapper;
02380         }
02381 
02382         /* LQ converters if -sws 0 or -sws 4*/
02383         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
02384             /* yv12_to_yuy2 */
02385             if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P)
02386             {
02387                 if (dstFormat == PIX_FMT_YUYV422)
02388                     c->swScale= PlanarToYuy2Wrapper;
02389                 else if (dstFormat == PIX_FMT_UYVY422)
02390                     c->swScale= PlanarToUyvyWrapper;
02391             }
02392         }
02393 
02394 #ifdef COMPILE_ALTIVEC
02395         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
02396             !(c->flags & SWS_BITEXACT) &&
02397             srcFormat == PIX_FMT_YUV420P) {
02398           // unscaled YV12 -> packed YUV, we want speed
02399           if (dstFormat == PIX_FMT_YUYV422)
02400               c->swScale= yv12toyuy2_unscaled_altivec;
02401           else if (dstFormat == PIX_FMT_UYVY422)
02402               c->swScale= yv12touyvy_unscaled_altivec;
02403         }
02404 #endif
02405 
02406         /* simple copy */
02407         if (  srcFormat == dstFormat
02408             || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)
02409             || (isPlanarYUV(srcFormat) && isGray(dstFormat))
02410             || (isPlanarYUV(dstFormat) && isGray(srcFormat)))
02411         {
02412             if (isPacked(c->srcFormat))
02413                 c->swScale= packedCopy;
02414             else /* Planar YUV or gray */
02415                 c->swScale= planarCopy;
02416         }
02417 
02418         /* gray16{le,be} conversions */
02419         if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))
02420         {
02421             c->swScale= gray16togray;
02422         }
02423         if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))
02424         {
02425             c->swScale= graytogray16;
02426         }
02427         if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))
02428         {
02429             c->swScale= gray16swap;
02430         }
02431 
02432 #if ARCH_BFIN
02433         if (flags & SWS_CPU_CAPS_BFIN)
02434             ff_bfin_get_unscaled_swscale (c);
02435 #endif
02436 
02437         if (c->swScale){
02438             if (flags&SWS_PRINT_INFO)
02439                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",
02440                                 sws_format_name(srcFormat), sws_format_name(dstFormat));
02441             return c;
02442         }
02443     }
02444 
02445     if (flags & SWS_CPU_CAPS_MMX2)
02446     {
02447         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
02448         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
02449         {
02450             if (flags&SWS_PRINT_INFO)
02451                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");
02452         }
02453         if (usesHFilter) c->canMMX2BeUsed=0;
02454     }
02455     else
02456         c->canMMX2BeUsed=0;
02457 
02458     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
02459     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
02460 
02461     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
02462     // but only for the FAST_BILINEAR mode otherwise do correct scaling
02463     // n-2 is the last chrominance sample available
02464     // this is not perfect, but no one should notice the difference, the more correct variant
02465     // would be like the vertical one, but that would require some special code for the
02466     // first and last pixel
02467     if (flags&SWS_FAST_BILINEAR)
02468     {
02469         if (c->canMMX2BeUsed)
02470         {
02471             c->lumXInc+= 20;
02472             c->chrXInc+= 20;
02473         }
02474         //we don't use the x86 asm scaler if MMX is available
02475         else if (flags & SWS_CPU_CAPS_MMX)
02476         {
02477             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
02478             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
02479         }
02480     }
02481 
02482     /* precalculate horizontal scaler filter coefficients */
02483     {
02484         const int filterAlign=
02485             (flags & SWS_CPU_CAPS_MMX) ? 4 :
02486             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
02487             1;
02488 
02489         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
02490                    srcW      ,       dstW, filterAlign, 1<<14,
02491                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,
02492                    srcFilter->lumH, dstFilter->lumH, c->param);
02493         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
02494                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
02495                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
02496                    srcFilter->chrH, dstFilter->chrH, c->param);
02497 
02498 #define MAX_FUNNY_CODE_SIZE 10000
02499 #if defined(COMPILE_MMX2)
02500 // can't downscale !!!
02501         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
02502         {
02503 #ifdef MAP_ANONYMOUS
02504             c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
02505             c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
02506 #else
02507             c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);
02508             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);
02509 #endif
02510 
02511             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));
02512             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));
02513             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));
02514             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));
02515 
02516             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
02517             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
02518         }
02519 #endif /* defined(COMPILE_MMX2) */
02520     } // initialize horizontal stuff
02521 
02522 
02523 
02524     /* precalculate vertical scaler filter coefficients */
02525     {
02526         const int filterAlign=
02527             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :
02528             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
02529             1;
02530 
02531         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
02532                    srcH      ,        dstH, filterAlign, (1<<12),
02533                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,
02534                    srcFilter->lumV, dstFilter->lumV, c->param);
02535         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
02536                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),
02537                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
02538                    srcFilter->chrV, dstFilter->chrV, c->param);
02539 
02540 #if HAVE_ALTIVEC
02541         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
02542         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);
02543 
02544         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
02545             int j;
02546             short *p = (short *)&c->vYCoeffsBank[i];
02547             for (j=0;j<8;j++)
02548                 p[j] = c->vLumFilter[i];
02549         }
02550 
02551         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {
02552             int j;
02553             short *p = (short *)&c->vCCoeffsBank[i];
02554             for (j=0;j<8;j++)
02555                 p[j] = c->vChrFilter[i];
02556         }
02557 #endif
02558     }
02559 
02560     // calculate buffer sizes so that they won't run out while handling these damn slices
02561     c->vLumBufSize= c->vLumFilterSize;
02562     c->vChrBufSize= c->vChrFilterSize;
02563     for (i=0; i<dstH; i++)
02564     {
02565         int chrI= i*c->chrDstH / dstH;
02566         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,
02567                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
02568 
02569         nextSlice>>= c->chrSrcVSubSample;
02570         nextSlice<<= c->chrSrcVSubSample;
02571         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)
02572             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];
02573         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
02574             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
02575     }
02576 
02577     // allocate pixbufs (we use dynamic allocation because otherwise we would need to
02578     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));
02579     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));
02580     //Note we need at least one pixel more at the end because of the MMX code (just in case someone wanna replace the 4000/8000)
02581     /* align at 16 bytes for AltiVec */
02582     for (i=0; i<c->vLumBufSize; i++)
02583         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);
02584     for (i=0; i<c->vChrBufSize; i++)
02585         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);
02586 
02587     //try to avoid drawing green stuff between the right end and the stride end
02588     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);
02589 
02590     assert(2*VOFW == VOF);
02591 
02592     assert(c->chrDstH <= dstH);
02593 
02594     if (flags&SWS_PRINT_INFO)
02595     {
02596 #ifdef DITHER1XBPP
02597         const char *dither= " dithered";
02598 #else
02599         const char *dither= "";
02600 #endif
02601         if (flags&SWS_FAST_BILINEAR)
02602             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");
02603         else if (flags&SWS_BILINEAR)
02604             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");
02605         else if (flags&SWS_BICUBIC)
02606             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");
02607         else if (flags&SWS_X)
02608             av_log(c, AV_LOG_INFO, "Experimental scaler, ");
02609         else if (flags&SWS_POINT)
02610             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");
02611         else if (flags&SWS_AREA)
02612             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");
02613         else if (flags&SWS_BICUBLIN)
02614             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");
02615         else if (flags&SWS_GAUSS)
02616             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");
02617         else if (flags&SWS_SINC)
02618             av_log(c, AV_LOG_INFO, "Sinc scaler, ");
02619         else if (flags&SWS_LANCZOS)
02620             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");
02621         else if (flags&SWS_SPLINE)
02622             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");
02623         else
02624             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");
02625 
02626         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)
02627             av_log(c, AV_LOG_INFO, "from %s to%s %s ",
02628                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));
02629         else
02630             av_log(c, AV_LOG_INFO, "from %s to %s ",
02631                    sws_format_name(srcFormat), sws_format_name(dstFormat));
02632 
02633         if (flags & SWS_CPU_CAPS_MMX2)
02634             av_log(c, AV_LOG_INFO, "using MMX2\n");
02635         else if (flags & SWS_CPU_CAPS_3DNOW)
02636             av_log(c, AV_LOG_INFO, "using 3DNOW\n");
02637         else if (flags & SWS_CPU_CAPS_MMX)
02638             av_log(c, AV_LOG_INFO, "using MMX\n");
02639         else if (flags & SWS_CPU_CAPS_ALTIVEC)
02640             av_log(c, AV_LOG_INFO, "using AltiVec\n");
02641         else
02642             av_log(c, AV_LOG_INFO, "using C\n");
02643     }
02644 
02645     if (flags & SWS_PRINT_INFO)
02646     {
02647         if (flags & SWS_CPU_CAPS_MMX)
02648         {
02649             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
02650                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
02651             else
02652             {
02653                 if (c->hLumFilterSize==4)
02654                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");
02655                 else if (c->hLumFilterSize==8)
02656                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");
02657                 else
02658                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");
02659 
02660                 if (c->hChrFilterSize==4)
02661                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");
02662                 else if (c->hChrFilterSize==8)
02663                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");
02664                 else
02665                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");
02666             }
02667         }
02668         else
02669         {
02670 #if ARCH_X86
02671             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");
02672 #else
02673             if (flags & SWS_FAST_BILINEAR)
02674                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");
02675             else
02676                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");
02677 #endif
02678         }
02679         if (isPlanarYUV(dstFormat))
02680         {
02681             if (c->vLumFilterSize==1)
02682                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
02683             else
02684                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
02685         }
02686         else
02687         {
02688             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)
02689                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
02690                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
02691             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)
02692                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
02693             else
02694                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
02695         }
02696 
02697         if (dstFormat==PIX_FMT_BGR24)
02698             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",
02699                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
02700         else if (dstFormat==PIX_FMT_RGB32)
02701             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
02702         else if (dstFormat==PIX_FMT_BGR565)
02703             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
02704         else if (dstFormat==PIX_FMT_BGR555)
02705             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
02706 
02707         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
02708     }
02709     if (flags & SWS_PRINT_INFO)
02710     {
02711         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
02712                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
02713         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
02714                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
02715     }
02716 
02717     c->swScale= getSwsFunc(flags);
02718     return c;
02719 }
02720 
02725 int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
02726               int srcSliceH, uint8_t* dst[], int dstStride[]){
02727     int i;
02728     uint8_t* src2[4]= {src[0], src[1], src[2]};
02729 
02730     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
02731         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
02732         return 0;
02733     }
02734     if (c->sliceDir == 0) {
02735         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
02736     }
02737 
02738     if (usePal(c->srcFormat)){
02739         for (i=0; i<256; i++){
02740             int p, r, g, b,y,u,v;
02741             if(c->srcFormat == PIX_FMT_PAL8){
02742                 p=((uint32_t*)(src[1]))[i];
02743                 r= (p>>16)&0xFF;
02744                 g= (p>> 8)&0xFF;
02745                 b=  p     &0xFF;
02746             }else if(c->srcFormat == PIX_FMT_RGB8){
02747                 r= (i>>5    )*36;
02748                 g= ((i>>2)&7)*36;
02749                 b= (i&3     )*85;
02750             }else if(c->srcFormat == PIX_FMT_BGR8){
02751                 b= (i>>6    )*85;
02752                 g= ((i>>3)&7)*36;
02753                 r= (i&7     )*36;
02754             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){
02755                 r= (i>>3    )*255;
02756                 g= ((i>>1)&3)*85;
02757                 b= (i&1     )*255;
02758             }else {
02759                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
02760                 b= (i>>3    )*255;
02761                 g= ((i>>1)&3)*85;
02762                 r= (i&1     )*255;
02763             }
02764             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
02765             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
02766             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
02767             c->pal_yuv[i]= y + (u<<8) + (v<<16);
02768 
02769 
02770             switch(c->dstFormat) {
02771             case PIX_FMT_BGR32:
02772 #ifndef WORDS_BIGENDIAN
02773             case PIX_FMT_RGB24:
02774 #endif
02775                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);
02776                 break;
02777             case PIX_FMT_BGR32_1:
02778 #ifdef  WORDS_BIGENDIAN
02779             case PIX_FMT_BGR24:
02780 #endif
02781                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;
02782                 break;
02783             case PIX_FMT_RGB32_1:
02784 #ifdef  WORDS_BIGENDIAN
02785             case PIX_FMT_RGB24:
02786 #endif
02787                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;
02788                 break;
02789             case PIX_FMT_RGB32:
02790 #ifndef WORDS_BIGENDIAN
02791             case PIX_FMT_BGR24:
02792 #endif
02793             default:
02794                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);
02795             }
02796         }
02797     }
02798 
02799     // copy strides, so they can safely be modified
02800     if (c->sliceDir == 1) {
02801         // slices go from top to bottom
02802         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};
02803         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};
02804         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
02805     } else {
02806         // slices go from bottom to top => we flip the image internally
02807         uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],
02808                            dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],
02809                            dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};
02810         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};
02811         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};
02812 
02813         src2[0] += (srcSliceH-1)*srcStride[0];
02814         if (!usePal(c->srcFormat))
02815             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
02816         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
02817 
02818         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
02819     }
02820 }
02821 
02822 #if LIBSWSCALE_VERSION_MAJOR < 1
02823 int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
02824                       int srcSliceH, uint8_t* dst[], int dstStride[]){
02825     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
02826 }
02827 #endif
02828 
02829 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
02830                                 float lumaSharpen, float chromaSharpen,
02831                                 float chromaHShift, float chromaVShift,
02832                                 int verbose)
02833 {
02834     SwsFilter *filter= av_malloc(sizeof(SwsFilter));
02835 
02836     if (lumaGBlur!=0.0){
02837         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
02838         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
02839     }else{
02840         filter->lumH= sws_getIdentityVec();
02841         filter->lumV= sws_getIdentityVec();
02842     }
02843 
02844     if (chromaGBlur!=0.0){
02845         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
02846         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
02847     }else{
02848         filter->chrH= sws_getIdentityVec();
02849         filter->chrV= sws_getIdentityVec();
02850     }
02851 
02852     if (chromaSharpen!=0.0){
02853         SwsVector *id= sws_getIdentityVec();
02854         sws_scaleVec(filter->chrH, -chromaSharpen);
02855         sws_scaleVec(filter->chrV, -chromaSharpen);
02856         sws_addVec(filter->chrH, id);
02857         sws_addVec(filter->chrV, id);
02858         sws_freeVec(id);
02859     }
02860 
02861     if (lumaSharpen!=0.0){
02862         SwsVector *id= sws_getIdentityVec();
02863         sws_scaleVec(filter->lumH, -lumaSharpen);
02864         sws_scaleVec(filter->lumV, -lumaSharpen);
02865         sws_addVec(filter->lumH, id);
02866         sws_addVec(filter->lumV, id);
02867         sws_freeVec(id);
02868     }
02869 
02870     if (chromaHShift != 0.0)
02871         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
02872 
02873     if (chromaVShift != 0.0)
02874         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
02875 
02876     sws_normalizeVec(filter->chrH, 1.0);
02877     sws_normalizeVec(filter->chrV, 1.0);
02878     sws_normalizeVec(filter->lumH, 1.0);
02879     sws_normalizeVec(filter->lumV, 1.0);
02880 
02881     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
02882     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);
02883 
02884     return filter;
02885 }
02886 
02887 SwsVector *sws_getGaussianVec(double variance, double quality){
02888     const int length= (int)(variance*quality + 0.5) | 1;
02889     int i;
02890     double *coeff= av_malloc(length*sizeof(double));
02891     double middle= (length-1)*0.5;
02892     SwsVector *vec= av_malloc(sizeof(SwsVector));
02893 
02894     vec->coeff= coeff;
02895     vec->length= length;
02896 
02897     for (i=0; i<length; i++)
02898     {
02899         double dist= i-middle;
02900         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);
02901     }
02902 
02903     sws_normalizeVec(vec, 1.0);
02904 
02905     return vec;
02906 }
02907 
02908 SwsVector *sws_getConstVec(double c, int length){
02909     int i;
02910     double *coeff= av_malloc(length*sizeof(double));
02911     SwsVector *vec= av_malloc(sizeof(SwsVector));
02912 
02913     vec->coeff= coeff;
02914     vec->length= length;
02915 
02916     for (i=0; i<length; i++)
02917         coeff[i]= c;
02918 
02919     return vec;
02920 }
02921 
02922 
02923 SwsVector *sws_getIdentityVec(void){
02924     return sws_getConstVec(1.0, 1);
02925 }
02926 
02927 double sws_dcVec(SwsVector *a){
02928     int i;
02929     double sum=0;
02930 
02931     for (i=0; i<a->length; i++)
02932         sum+= a->coeff[i];
02933 
02934     return sum;
02935 }
02936 
02937 void sws_scaleVec(SwsVector *a, double scalar){
02938     int i;
02939 
02940     for (i=0; i<a->length; i++)
02941         a->coeff[i]*= scalar;
02942 }
02943 
02944 void sws_normalizeVec(SwsVector *a, double height){
02945     sws_scaleVec(a, height/sws_dcVec(a));
02946 }
02947 
02948 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){
02949     int length= a->length + b->length - 1;
02950     double *coeff= av_malloc(length*sizeof(double));
02951     int i, j;
02952     SwsVector *vec= av_malloc(sizeof(SwsVector));
02953 
02954     vec->coeff= coeff;
02955     vec->length= length;
02956 
02957     for (i=0; i<length; i++) coeff[i]= 0.0;
02958 
02959     for (i=0; i<a->length; i++)
02960     {
02961         for (j=0; j<b->length; j++)
02962         {
02963             coeff[i+j]+= a->coeff[i]*b->coeff[j];
02964         }
02965     }
02966 
02967     return vec;
02968 }
02969 
02970 static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){
02971     int length= FFMAX(a->length, b->length);
02972     double *coeff= av_malloc(length*sizeof(double));
02973     int i;
02974     SwsVector *vec= av_malloc(sizeof(SwsVector));
02975 
02976     vec->coeff= coeff;
02977     vec->length= length;
02978 
02979     for (i=0; i<length; i++) coeff[i]= 0.0;
02980 
02981     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
02982     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
02983 
02984     return vec;
02985 }
02986 
02987 static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){
02988     int length= FFMAX(a->length, b->length);
02989     double *coeff= av_malloc(length*sizeof(double));
02990     int i;
02991     SwsVector *vec= av_malloc(sizeof(SwsVector));
02992 
02993     vec->coeff= coeff;
02994     vec->length= length;
02995 
02996     for (i=0; i<length; i++) coeff[i]= 0.0;
02997 
02998     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
02999     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
03000 
03001     return vec;
03002 }
03003 
03004 /* shift left / or right if "shift" is negative */
03005 static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){
03006     int length= a->length + FFABS(shift)*2;
03007     double *coeff= av_malloc(length*sizeof(double));
03008     int i;
03009     SwsVector *vec= av_malloc(sizeof(SwsVector));
03010 
03011     vec->coeff= coeff;
03012     vec->length= length;
03013 
03014     for (i=0; i<length; i++) coeff[i]= 0.0;
03015 
03016     for (i=0; i<a->length; i++)
03017     {
03018         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
03019     }
03020 
03021     return vec;
03022 }
03023 
03024 void sws_shiftVec(SwsVector *a, int shift){
03025     SwsVector *shifted= sws_getShiftedVec(a, shift);
03026     av_free(a->coeff);
03027     a->coeff= shifted->coeff;
03028     a->length= shifted->length;
03029     av_free(shifted);
03030 }
03031 
03032 void sws_addVec(SwsVector *a, SwsVector *b){
03033     SwsVector *sum= sws_sumVec(a, b);
03034     av_free(a->coeff);
03035     a->coeff= sum->coeff;
03036     a->length= sum->length;
03037     av_free(sum);
03038 }
03039 
03040 void sws_subVec(SwsVector *a, SwsVector *b){
03041     SwsVector *diff= sws_diffVec(a, b);
03042     av_free(a->coeff);
03043     a->coeff= diff->coeff;
03044     a->length= diff->length;
03045     av_free(diff);
03046 }
03047 
03048 void sws_convVec(SwsVector *a, SwsVector *b){
03049     SwsVector *conv= sws_getConvVec(a, b);
03050     av_free(a->coeff);
03051     a->coeff= conv->coeff;
03052     a->length= conv->length;
03053     av_free(conv);
03054 }
03055 
03056 SwsVector *sws_cloneVec(SwsVector *a){
03057     double *coeff= av_malloc(a->length*sizeof(double));
03058     int i;
03059     SwsVector *vec= av_malloc(sizeof(SwsVector));
03060 
03061     vec->coeff= coeff;
03062     vec->length= a->length;
03063 
03064     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];
03065 
03066     return vec;
03067 }
03068 
03069 void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level){
03070     int i;
03071     double max=0;
03072     double min=0;
03073     double range;
03074 
03075     for (i=0; i<a->length; i++)
03076         if (a->coeff[i]>max) max= a->coeff[i];
03077 
03078     for (i=0; i<a->length; i++)
03079         if (a->coeff[i]<min) min= a->coeff[i];
03080 
03081     range= max - min;
03082 
03083     for (i=0; i<a->length; i++)
03084     {
03085         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
03086         av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);
03087         for (;x>0; x--) av_log(log_ctx, log_level, " ");
03088         av_log(log_ctx, log_level, "|\n");
03089     }
03090 }
03091 
03092 #if LIBSWSCALE_VERSION_MAJOR < 1
03093 void sws_printVec(SwsVector *a){
03094     sws_printVec2(a, NULL, AV_LOG_DEBUG);
03095 }
03096 #endif
03097 
03098 void sws_freeVec(SwsVector *a){
03099     if (!a) return;
03100     av_freep(&a->coeff);
03101     a->length=0;
03102     av_free(a);
03103 }
03104 
03105 void sws_freeFilter(SwsFilter *filter){
03106     if (!filter) return;
03107 
03108     if (filter->lumH) sws_freeVec(filter->lumH);
03109     if (filter->lumV) sws_freeVec(filter->lumV);
03110     if (filter->chrH) sws_freeVec(filter->chrH);
03111     if (filter->chrV) sws_freeVec(filter->chrV);
03112     av_free(filter);
03113 }
03114 
03115 
03116 void sws_freeContext(SwsContext *c){
03117     int i;
03118     if (!c) return;
03119 
03120     if (c->lumPixBuf)
03121     {
03122         for (i=0; i<c->vLumBufSize; i++)
03123             av_freep(&c->lumPixBuf[i]);
03124         av_freep(&c->lumPixBuf);
03125     }
03126 
03127     if (c->chrPixBuf)
03128     {
03129         for (i=0; i<c->vChrBufSize; i++)
03130             av_freep(&c->chrPixBuf[i]);
03131         av_freep(&c->chrPixBuf);
03132     }
03133 
03134     av_freep(&c->vLumFilter);
03135     av_freep(&c->vChrFilter);
03136     av_freep(&c->hLumFilter);
03137     av_freep(&c->hChrFilter);
03138 #if HAVE_ALTIVEC
03139     av_freep(&c->vYCoeffsBank);
03140     av_freep(&c->vCCoeffsBank);
03141 #endif
03142 
03143     av_freep(&c->vLumFilterPos);
03144     av_freep(&c->vChrFilterPos);
03145     av_freep(&c->hLumFilterPos);
03146     av_freep(&c->hChrFilterPos);
03147 
03148 #if ARCH_X86 && CONFIG_GPL
03149 #ifdef MAP_ANONYMOUS
03150     if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);
03151     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);
03152 #else
03153     av_free(c->funnyYCode);
03154     av_free(c->funnyUVCode);
03155 #endif
03156     c->funnyYCode=NULL;
03157     c->funnyUVCode=NULL;
03158 #endif /* ARCH_X86 && CONFIG_GPL */
03159 
03160     av_freep(&c->lumMmx2Filter);
03161     av_freep(&c->chrMmx2Filter);
03162     av_freep(&c->lumMmx2FilterPos);
03163     av_freep(&c->chrMmx2FilterPos);
03164     av_freep(&c->yuvTable);
03165 
03166     av_free(c);
03167 }
03168 
03169 struct SwsContext *sws_getCachedContext(struct SwsContext *context,
03170                                         int srcW, int srcH, enum PixelFormat srcFormat,
03171                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,
03172                                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)
03173 {
03174     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};
03175 
03176     if (!param)
03177         param = default_param;
03178 
03179     if (context) {
03180         if (context->srcW != srcW || context->srcH != srcH ||
03181             context->srcFormat != srcFormat ||
03182             context->dstW != dstW || context->dstH != dstH ||
03183             context->dstFormat != dstFormat || context->flags != flags ||
03184             context->param[0] != param[0] || context->param[1] != param[1])
03185         {
03186             sws_freeContext(context);
03187             context = NULL;
03188         }
03189     }
03190     if (!context) {
03191         return sws_getContext(srcW, srcH, srcFormat,
03192                               dstW, dstH, dstFormat, flags,
03193                               srcFilter, dstFilter, param);
03194     }
03195     return context;
03196 }
03197 

Generated on Tue Nov 4 2014 12:59:24 for ffmpeg by  doxygen 1.7.1