2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 * the C code (not assembly, mmx, ...) of this file can be used
21 * under the LGPL license too
25 supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8
26 supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
27 {BGR,RGB}{1,4,8,15,16} support dithering
29 unscaled special converters (YV12=I420=IYUV, Y800=Y8)
30 YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
35 BGR24 -> BGR32 & RGB24 -> RGB32
36 BGR32 -> BGR24 & RGB32 -> RGB24
41 tested special converters (most are tested actually, but I did not write it down ...)
48 untested special converters
49 YV12/I420 -> BGR15/BGR24/BGR32 (it is the yuv2rgb stuff, so it should be ok)
50 YV12/I420 -> YV12/I420
51 YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
52 BGR24 -> BGR32 & RGB24 -> RGB32
53 BGR32 -> BGR24 & RGB32 -> RGB24
57 #define _SVID_SOURCE //needed for MAP_ANONYMOUS
65 #ifdef HAVE_SYS_MMAN_H
67 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
68 #define MAP_ANONYMOUS MAP_ANON
72 #include "swscale_internal.h"
74 #include "libavutil/x86_cpu.h"
75 #include "libavutil/bswap.h"
77 unsigned swscale_version(void)
79 return LIBSWSCALE_VERSION_INT;
89 //#define WORDS_BIGENDIAN
92 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
94 #define RET 0xC3 //near return opcode for X86
99 #define PI 3.14159265358979323846
102 #define isSupportedIn(x) ( \
103 (x)==PIX_FMT_YUV420P \
104 || (x)==PIX_FMT_YUVA420P \
105 || (x)==PIX_FMT_YUYV422 \
106 || (x)==PIX_FMT_UYVY422 \
107 || (x)==PIX_FMT_RGB32 \
108 || (x)==PIX_FMT_RGB32_1 \
109 || (x)==PIX_FMT_BGR24 \
110 || (x)==PIX_FMT_BGR565 \
111 || (x)==PIX_FMT_BGR555 \
112 || (x)==PIX_FMT_BGR32 \
113 || (x)==PIX_FMT_BGR32_1 \
114 || (x)==PIX_FMT_RGB24 \
115 || (x)==PIX_FMT_RGB565 \
116 || (x)==PIX_FMT_RGB555 \
117 || (x)==PIX_FMT_GRAY8 \
118 || (x)==PIX_FMT_YUV410P \
119 || (x)==PIX_FMT_YUV440P \
120 || (x)==PIX_FMT_GRAY16BE \
121 || (x)==PIX_FMT_GRAY16LE \
122 || (x)==PIX_FMT_YUV444P \
123 || (x)==PIX_FMT_YUV422P \
124 || (x)==PIX_FMT_YUV411P \
125 || (x)==PIX_FMT_PAL8 \
126 || (x)==PIX_FMT_BGR8 \
127 || (x)==PIX_FMT_RGB8 \
128 || (x)==PIX_FMT_BGR4_BYTE \
129 || (x)==PIX_FMT_RGB4_BYTE \
130 || (x)==PIX_FMT_YUV440P \
131 || (x)==PIX_FMT_MONOWHITE \
132 || (x)==PIX_FMT_MONOBLACK \
134 #define isSupportedOut(x) ( \
135 (x)==PIX_FMT_YUV420P \
136 || (x)==PIX_FMT_YUYV422 \
137 || (x)==PIX_FMT_UYVY422 \
138 || (x)==PIX_FMT_YUV444P \
139 || (x)==PIX_FMT_YUV422P \
140 || (x)==PIX_FMT_YUV411P \
143 || (x)==PIX_FMT_NV12 \
144 || (x)==PIX_FMT_NV21 \
145 || (x)==PIX_FMT_GRAY16BE \
146 || (x)==PIX_FMT_GRAY16LE \
147 || (x)==PIX_FMT_GRAY8 \
148 || (x)==PIX_FMT_YUV410P \
149 || (x)==PIX_FMT_YUV440P \
151 #define isPacked(x) ( \
153 || (x)==PIX_FMT_YUYV422 \
154 || (x)==PIX_FMT_UYVY422 \
159 #define RGB2YUV_SHIFT 15
160 #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))
161 #define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))
162 #define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
163 #define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))
164 #define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))
165 #define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))
166 #define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))
167 #define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
168 #define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))
170 extern const int32_t Inverse_Table_6_9[8][4];
172 static const double rgb2yuv_table[8][9]={
173 {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},
174 {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},
175 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
176 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
177 {0.59 , 0.11 , 0.30 , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC
178 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},
179 {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M
180 {0.701 , 0.087 , 0.212 , -0.384, 0.5 -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M
185 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
188 more intelligent misalignment avoidance for the horizontal scaler
189 write special vertical cubic upscale version
190 Optimize C code (yv12 / minmax)
191 add support for packed pixel yuv input & output
192 add support for Y8 output
193 optimize bgr24 & bgr32
194 add BGR4 output support
195 write special BGR->BGR scaler
198 #if defined(ARCH_X86) && defined (CONFIG_GPL)
199 DECLARE_ASM_CONST(8, uint64_t, bF8)= 0xF8F8F8F8F8F8F8F8LL;
200 DECLARE_ASM_CONST(8, uint64_t, bFC)= 0xFCFCFCFCFCFCFCFCLL;
201 DECLARE_ASM_CONST(8, uint64_t, w10)= 0x0010001000100010LL;
202 DECLARE_ASM_CONST(8, uint64_t, w02)= 0x0002000200020002LL;
203 DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;
204 DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;
205 DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;
206 DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;
208 const DECLARE_ALIGNED(8, uint64_t, ff_dither4[2]) = {
209 0x0103010301030103LL,
210 0x0200020002000200LL,};
212 const DECLARE_ALIGNED(8, uint64_t, ff_dither8[2]) = {
213 0x0602060206020602LL,
214 0x0004000400040004LL,};
216 DECLARE_ASM_CONST(8, uint64_t, b16Mask)= 0x001F001F001F001FLL;
217 DECLARE_ASM_CONST(8, uint64_t, g16Mask)= 0x07E007E007E007E0LL;
218 DECLARE_ASM_CONST(8, uint64_t, r16Mask)= 0xF800F800F800F800LL;
219 DECLARE_ASM_CONST(8, uint64_t, b15Mask)= 0x001F001F001F001FLL;
220 DECLARE_ASM_CONST(8, uint64_t, g15Mask)= 0x03E003E003E003E0LL;
221 DECLARE_ASM_CONST(8, uint64_t, r15Mask)= 0x7C007C007C007C00LL;
223 DECLARE_ALIGNED(8, const uint64_t, ff_M24A) = 0x00FF0000FF0000FFLL;
224 DECLARE_ALIGNED(8, const uint64_t, ff_M24B) = 0xFF0000FF0000FF00LL;
225 DECLARE_ALIGNED(8, const uint64_t, ff_M24C) = 0x0000FF0000FF0000LL;
228 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff) = 0x000000210041000DULL;
229 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff) = 0x0000FFEEFFDC0038ULL;
230 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff) = 0x00000038FFD2FFF8ULL;
232 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff) = 0x000020E540830C8BULL;
233 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff) = 0x0000ED0FDAC23831ULL;
234 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff) = 0x00003831D0E6F6EAULL;
235 #endif /* FAST_BGR2YV12 */
236 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset) = 0x1010101010101010ULL;
237 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;
238 DECLARE_ALIGNED(8, const uint64_t, ff_w1111) = 0x0001000100010001ULL;
240 DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toY1Coeff) = 0x0C88000040870C88ULL;
241 DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toY2Coeff) = 0x20DE4087000020DEULL;
242 DECLARE_ALIGNED(8, const uint64_t, ff_rgb24toY1Coeff) = 0x20DE0000408720DEULL;
243 DECLARE_ALIGNED(8, const uint64_t, ff_rgb24toY2Coeff) = 0x0C88408700000C88ULL;
244 DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toYOffset) = 0x0008400000084000ULL;
246 DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toUV[2][4]) = {
247 {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},
248 {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},
251 DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;
253 #endif /* defined(ARCH_X86) */
255 // clipping helper table for C implementations:
256 static unsigned char clip_table[768];
258 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
260 const uint8_t __attribute__((aligned(8))) dither_2x2_4[2][8]={
261 { 1, 3, 1, 3, 1, 3, 1, 3, },
262 { 2, 0, 2, 0, 2, 0, 2, 0, },
265 const uint8_t __attribute__((aligned(8))) dither_2x2_8[2][8]={
266 { 6, 2, 6, 2, 6, 2, 6, 2, },
267 { 0, 4, 0, 4, 0, 4, 0, 4, },
270 const uint8_t __attribute__((aligned(8))) dither_8x8_32[8][8]={
271 { 17, 9, 23, 15, 16, 8, 22, 14, },
272 { 5, 29, 3, 27, 4, 28, 2, 26, },
273 { 21, 13, 19, 11, 20, 12, 18, 10, },
274 { 0, 24, 6, 30, 1, 25, 7, 31, },
275 { 16, 8, 22, 14, 17, 9, 23, 15, },
276 { 4, 28, 2, 26, 5, 29, 3, 27, },
277 { 20, 12, 18, 10, 21, 13, 19, 11, },
278 { 1, 25, 7, 31, 0, 24, 6, 30, },
282 const uint8_t __attribute__((aligned(8))) dither_8x8_64[8][8]={
283 { 0, 48, 12, 60, 3, 51, 15, 63, },
284 { 32, 16, 44, 28, 35, 19, 47, 31, },
285 { 8, 56, 4, 52, 11, 59, 7, 55, },
286 { 40, 24, 36, 20, 43, 27, 39, 23, },
287 { 2, 50, 14, 62, 1, 49, 13, 61, },
288 { 34, 18, 46, 30, 33, 17, 45, 29, },
289 { 10, 58, 6, 54, 9, 57, 5, 53, },
290 { 42, 26, 38, 22, 41, 25, 37, 21, },
294 const uint8_t __attribute__((aligned(8))) dither_8x8_73[8][8]={
295 { 0, 55, 14, 68, 3, 58, 17, 72, },
296 { 37, 18, 50, 32, 40, 22, 54, 35, },
297 { 9, 64, 5, 59, 13, 67, 8, 63, },
298 { 46, 27, 41, 23, 49, 31, 44, 26, },
299 { 2, 57, 16, 71, 1, 56, 15, 70, },
300 { 39, 21, 52, 34, 38, 19, 51, 33, },
301 { 11, 66, 7, 62, 10, 65, 6, 60, },
302 { 48, 30, 43, 25, 47, 29, 42, 24, },
306 const uint8_t __attribute__((aligned(8))) dither_8x8_128[8][8]={
307 { 68, 36, 92, 60, 66, 34, 90, 58, },
308 { 20, 116, 12, 108, 18, 114, 10, 106, },
309 { 84, 52, 76, 44, 82, 50, 74, 42, },
310 { 0, 96, 24, 120, 6, 102, 30, 126, },
311 { 64, 32, 88, 56, 70, 38, 94, 62, },
312 { 16, 112, 8, 104, 22, 118, 14, 110, },
313 { 80, 48, 72, 40, 86, 54, 78, 46, },
314 { 4, 100, 28, 124, 2, 98, 26, 122, },
319 const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
320 {117, 62, 158, 103, 113, 58, 155, 100, },
321 { 34, 199, 21, 186, 31, 196, 17, 182, },
322 {144, 89, 131, 76, 141, 86, 127, 72, },
323 { 0, 165, 41, 206, 10, 175, 52, 217, },
324 {110, 55, 151, 96, 120, 65, 162, 107, },
325 { 28, 193, 14, 179, 38, 203, 24, 189, },
326 {138, 83, 124, 69, 148, 93, 134, 79, },
327 { 7, 172, 48, 213, 3, 168, 45, 210, },
330 // tries to correct a gamma of 1.5
331 const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
332 { 0, 143, 18, 200, 2, 156, 25, 215, },
333 { 78, 28, 125, 64, 89, 36, 138, 74, },
334 { 10, 180, 3, 161, 16, 195, 8, 175, },
335 {109, 51, 93, 38, 121, 60, 105, 47, },
336 { 1, 152, 23, 210, 0, 147, 20, 205, },
337 { 85, 33, 134, 71, 81, 30, 130, 67, },
338 { 14, 190, 6, 171, 12, 185, 5, 166, },
339 {117, 57, 101, 44, 113, 54, 97, 41, },
342 // tries to correct a gamma of 2.0
343 const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
344 { 0, 124, 8, 193, 0, 140, 12, 213, },
345 { 55, 14, 104, 42, 66, 19, 119, 52, },
346 { 3, 168, 1, 145, 6, 187, 3, 162, },
347 { 86, 31, 70, 21, 99, 39, 82, 28, },
348 { 0, 134, 11, 206, 0, 129, 9, 200, },
349 { 62, 17, 114, 48, 58, 16, 109, 45, },
350 { 5, 181, 2, 157, 4, 175, 1, 151, },
351 { 95, 36, 78, 26, 90, 34, 74, 24, },
354 // tries to correct a gamma of 2.5
355 const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
356 { 0, 107, 3, 187, 0, 125, 6, 212, },
357 { 39, 7, 86, 28, 49, 11, 102, 36, },
358 { 1, 158, 0, 131, 3, 180, 1, 151, },
359 { 68, 19, 52, 12, 81, 25, 64, 17, },
360 { 0, 119, 5, 203, 0, 113, 4, 195, },
361 { 45, 9, 96, 33, 42, 8, 91, 30, },
362 { 2, 172, 1, 144, 2, 165, 0, 137, },
363 { 77, 23, 60, 15, 72, 21, 56, 14, },
367 const char *sws_format_name(enum PixelFormat format)
370 case PIX_FMT_YUV420P:
372 case PIX_FMT_YUVA420P:
374 case PIX_FMT_YUYV422:
380 case PIX_FMT_YUV422P:
382 case PIX_FMT_YUV444P:
386 case PIX_FMT_YUV410P:
388 case PIX_FMT_YUV411P:
394 case PIX_FMT_GRAY16BE:
396 case PIX_FMT_GRAY16LE:
400 case PIX_FMT_MONOWHITE:
402 case PIX_FMT_MONOBLACK:
406 case PIX_FMT_YUVJ420P:
408 case PIX_FMT_YUVJ422P:
410 case PIX_FMT_YUVJ444P:
412 case PIX_FMT_XVMC_MPEG2_MC:
413 return "xvmc_mpeg2_mc";
414 case PIX_FMT_XVMC_MPEG2_IDCT:
415 return "xvmc_mpeg2_idct";
416 case PIX_FMT_UYVY422:
418 case PIX_FMT_UYYVYY411:
420 case PIX_FMT_RGB32_1:
422 case PIX_FMT_BGR32_1:
434 case PIX_FMT_BGR4_BYTE:
440 case PIX_FMT_RGB4_BYTE:
446 case PIX_FMT_YUV440P:
449 return "Unknown format";
453 static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
454 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
455 uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
457 //FIXME Optimize (just quickly writen not opti..)
459 for (i=0; i<dstW; i++)
463 for (j=0; j<lumFilterSize; j++)
464 val += lumSrc[j][i] * lumFilter[j];
466 dest[i]= av_clip_uint8(val>>19);
470 for (i=0; i<chrDstW; i++)
475 for (j=0; j<chrFilterSize; j++)
477 u += chrSrc[j][i] * chrFilter[j];
478 v += chrSrc[j][i + VOFW] * chrFilter[j];
481 uDest[i]= av_clip_uint8(u>>19);
482 vDest[i]= av_clip_uint8(v>>19);
486 static inline void yuv2nv12XinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
487 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
488 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
490 //FIXME Optimize (just quickly writen not opti..)
492 for (i=0; i<dstW; i++)
496 for (j=0; j<lumFilterSize; j++)
497 val += lumSrc[j][i] * lumFilter[j];
499 dest[i]= av_clip_uint8(val>>19);
505 if (dstFormat == PIX_FMT_NV12)
506 for (i=0; i<chrDstW; i++)
511 for (j=0; j<chrFilterSize; j++)
513 u += chrSrc[j][i] * chrFilter[j];
514 v += chrSrc[j][i + VOFW] * chrFilter[j];
517 uDest[2*i]= av_clip_uint8(u>>19);
518 uDest[2*i+1]= av_clip_uint8(v>>19);
521 for (i=0; i<chrDstW; i++)
526 for (j=0; j<chrFilterSize; j++)
528 u += chrSrc[j][i] * chrFilter[j];
529 v += chrSrc[j][i + VOFW] * chrFilter[j];
532 uDest[2*i]= av_clip_uint8(v>>19);
533 uDest[2*i+1]= av_clip_uint8(u>>19);
537 #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type) \
538 for (i=0; i<(dstW>>1); i++){\
544 type av_unused *r, *b, *g;\
547 for (j=0; j<lumFilterSize; j++)\
549 Y1 += lumSrc[j][i2] * lumFilter[j];\
550 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
552 for (j=0; j<chrFilterSize; j++)\
554 U += chrSrc[j][i] * chrFilter[j];\
555 V += chrSrc[j][i+VOFW] * chrFilter[j];\
562 #define YSCALE_YUV_2_PACKEDX_C(type) \
563 YSCALE_YUV_2_PACKEDX_NOCLIP_C(type)\
564 if ((Y1|Y2|U|V)&256)\
566 if (Y1>255) Y1=255; \
567 else if (Y1<0)Y1=0; \
568 if (Y2>255) Y2=255; \
569 else if (Y2<0)Y2=0; \
576 #define YSCALE_YUV_2_PACKEDX_FULL_C \
577 for (i=0; i<dstW; i++){\
584 for (j=0; j<lumFilterSize; j++){\
585 Y += lumSrc[j][i ] * lumFilter[j];\
587 for (j=0; j<chrFilterSize; j++){\
588 U += chrSrc[j][i ] * chrFilter[j];\
589 V += chrSrc[j][i+VOFW] * chrFilter[j];\
595 #define YSCALE_YUV_2_RGBX_FULL_C(rnd) \
596 YSCALE_YUV_2_PACKEDX_FULL_C\
597 Y-= c->yuv2rgb_y_offset;\
598 Y*= c->yuv2rgb_y_coeff;\
600 R= Y + V*c->yuv2rgb_v2r_coeff;\
601 G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\
602 B= Y + U*c->yuv2rgb_u2b_coeff;\
603 if ((R|G|B)&(0xC0000000)){\
604 if (R>=(256<<22)) R=(256<<22)-1; \
606 if (G>=(256<<22)) G=(256<<22)-1; \
608 if (B>=(256<<22)) B=(256<<22)-1; \
613 #define YSCALE_YUV_2_GRAY16_C \
614 for (i=0; i<(dstW>>1); i++){\
623 for (j=0; j<lumFilterSize; j++)\
625 Y1 += lumSrc[j][i2] * lumFilter[j];\
626 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
630 if ((Y1|Y2|U|V)&65536)\
632 if (Y1>65535) Y1=65535; \
633 else if (Y1<0)Y1=0; \
634 if (Y2>65535) Y2=65535; \
635 else if (Y2<0)Y2=0; \
638 #define YSCALE_YUV_2_RGBX_C(type) \
639 YSCALE_YUV_2_PACKEDX_C(type) /* FIXME fix tables so that cliping is not needed and then use _NOCLIP*/\
640 r = (type *)c->table_rV[V]; \
641 g = (type *)(c->table_gU[U] + c->table_gV[V]); \
642 b = (type *)c->table_bU[U]; \
644 #define YSCALE_YUV_2_PACKED2_C \
645 for (i=0; i<(dstW>>1); i++){ \
647 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19; \
648 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19; \
649 int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19; \
650 int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19; \
652 #define YSCALE_YUV_2_GRAY16_2_C \
653 for (i=0; i<(dstW>>1); i++){ \
655 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>11; \
656 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11; \
658 #define YSCALE_YUV_2_RGB2_C(type) \
659 YSCALE_YUV_2_PACKED2_C\
661 r = (type *)c->table_rV[V];\
662 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
663 b = (type *)c->table_bU[U];\
665 #define YSCALE_YUV_2_PACKED1_C \
666 for (i=0; i<(dstW>>1); i++){\
668 int Y1= buf0[i2 ]>>7;\
669 int Y2= buf0[i2+1]>>7;\
670 int U= (uvbuf1[i ])>>7;\
671 int V= (uvbuf1[i+VOFW])>>7;\
673 #define YSCALE_YUV_2_GRAY16_1_C \
674 for (i=0; i<(dstW>>1); i++){\
676 int Y1= buf0[i2 ]<<1;\
677 int Y2= buf0[i2+1]<<1;\
679 #define YSCALE_YUV_2_RGB1_C(type) \
680 YSCALE_YUV_2_PACKED1_C\
682 r = (type *)c->table_rV[V];\
683 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
684 b = (type *)c->table_bU[U];\
686 #define YSCALE_YUV_2_PACKED1B_C \
687 for (i=0; i<(dstW>>1); i++){\
689 int Y1= buf0[i2 ]>>7;\
690 int Y2= buf0[i2+1]>>7;\
691 int U= (uvbuf0[i ] + uvbuf1[i ])>>8;\
692 int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\
694 #define YSCALE_YUV_2_RGB1B_C(type) \
695 YSCALE_YUV_2_PACKED1B_C\
697 r = (type *)c->table_rV[V];\
698 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
699 b = (type *)c->table_bU[U];\
701 #define YSCALE_YUV_2_MONO2_C \
702 const uint8_t * const d128=dither_8x8_220[y&7];\
703 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
704 for (i=0; i<dstW-7; i+=8){\
706 acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];\
707 acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
708 acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
709 acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
710 acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
711 acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
712 acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
713 acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
714 ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
719 #define YSCALE_YUV_2_MONOX_C \
720 const uint8_t * const d128=dither_8x8_220[y&7];\
721 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
723 for (i=0; i<dstW-1; i+=2){\
728 for (j=0; j<lumFilterSize; j++)\
730 Y1 += lumSrc[j][i] * lumFilter[j];\
731 Y2 += lumSrc[j][i+1] * lumFilter[j];\
742 acc+= acc + g[Y1+d128[(i+0)&7]];\
743 acc+= acc + g[Y2+d128[(i+1)&7]];\
745 ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
751 #define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\
752 switch(c->dstFormat)\
756 case PIX_FMT_RGB32_1:\
757 case PIX_FMT_BGR32_1:\
759 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
760 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
765 ((uint8_t*)dest)[0]= r[Y1];\
766 ((uint8_t*)dest)[1]= g[Y1];\
767 ((uint8_t*)dest)[2]= b[Y1];\
768 ((uint8_t*)dest)[3]= r[Y2];\
769 ((uint8_t*)dest)[4]= g[Y2];\
770 ((uint8_t*)dest)[5]= b[Y2];\
776 ((uint8_t*)dest)[0]= b[Y1];\
777 ((uint8_t*)dest)[1]= g[Y1];\
778 ((uint8_t*)dest)[2]= r[Y1];\
779 ((uint8_t*)dest)[3]= b[Y2];\
780 ((uint8_t*)dest)[4]= g[Y2];\
781 ((uint8_t*)dest)[5]= r[Y2];\
785 case PIX_FMT_RGB565:\
786 case PIX_FMT_BGR565:\
788 const int dr1= dither_2x2_8[y&1 ][0];\
789 const int dg1= dither_2x2_4[y&1 ][0];\
790 const int db1= dither_2x2_8[(y&1)^1][0];\
791 const int dr2= dither_2x2_8[y&1 ][1];\
792 const int dg2= dither_2x2_4[y&1 ][1];\
793 const int db2= dither_2x2_8[(y&1)^1][1];\
795 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
796 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
800 case PIX_FMT_RGB555:\
801 case PIX_FMT_BGR555:\
803 const int dr1= dither_2x2_8[y&1 ][0];\
804 const int dg1= dither_2x2_8[y&1 ][1];\
805 const int db1= dither_2x2_8[(y&1)^1][0];\
806 const int dr2= dither_2x2_8[y&1 ][1];\
807 const int dg2= dither_2x2_8[y&1 ][0];\
808 const int db2= dither_2x2_8[(y&1)^1][1];\
810 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
811 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
818 const uint8_t * const d64= dither_8x8_73[y&7];\
819 const uint8_t * const d32= dither_8x8_32[y&7];\
821 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
822 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
829 const uint8_t * const d64= dither_8x8_73 [y&7];\
830 const uint8_t * const d128=dither_8x8_220[y&7];\
832 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
833 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
837 case PIX_FMT_RGB4_BYTE:\
838 case PIX_FMT_BGR4_BYTE:\
840 const uint8_t * const d64= dither_8x8_73 [y&7];\
841 const uint8_t * const d128=dither_8x8_220[y&7];\
843 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
844 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
848 case PIX_FMT_MONOBLACK:\
849 case PIX_FMT_MONOWHITE:\
854 case PIX_FMT_YUYV422:\
856 ((uint8_t*)dest)[2*i2+0]= Y1;\
857 ((uint8_t*)dest)[2*i2+1]= U;\
858 ((uint8_t*)dest)[2*i2+2]= Y2;\
859 ((uint8_t*)dest)[2*i2+3]= V;\
862 case PIX_FMT_UYVY422:\
864 ((uint8_t*)dest)[2*i2+0]= U;\
865 ((uint8_t*)dest)[2*i2+1]= Y1;\
866 ((uint8_t*)dest)[2*i2+2]= V;\
867 ((uint8_t*)dest)[2*i2+3]= Y2;\
870 case PIX_FMT_GRAY16BE:\
872 ((uint8_t*)dest)[2*i2+0]= Y1>>8;\
873 ((uint8_t*)dest)[2*i2+1]= Y1;\
874 ((uint8_t*)dest)[2*i2+2]= Y2>>8;\
875 ((uint8_t*)dest)[2*i2+3]= Y2;\
878 case PIX_FMT_GRAY16LE:\
880 ((uint8_t*)dest)[2*i2+0]= Y1;\
881 ((uint8_t*)dest)[2*i2+1]= Y1>>8;\
882 ((uint8_t*)dest)[2*i2+2]= Y2;\
883 ((uint8_t*)dest)[2*i2+3]= Y2>>8;\
889 static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
890 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
891 uint8_t *dest, int dstW, int y)
894 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)
897 static inline void yuv2rgbXinC_full(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
898 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
899 uint8_t *dest, int dstW, int y)
902 int step= fmt_depth(c->dstFormat)/8;
905 switch(c->dstFormat){
912 YSCALE_YUV_2_RGBX_FULL_C(1<<21)
926 YSCALE_YUV_2_RGBX_FULL_C(1<<21)
939 //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
941 #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT) || !defined(CONFIG_GPL)
946 #if (defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
947 #define COMPILE_ALTIVEC
948 #endif //HAVE_ALTIVEC
949 #endif //ARCH_POWERPC
951 #if defined(ARCH_X86)
953 #if ((defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
957 #if (defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
961 #if ((defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
962 #define COMPILE_3DNOW
964 #endif //ARCH_X86 || ARCH_X86_64
975 #define RENAME(a) a ## _C
976 #include "swscale_template.c"
979 #ifdef COMPILE_ALTIVEC
982 #define RENAME(a) a ## _altivec
983 #include "swscale_template.c"
986 #if defined(ARCH_X86)
995 #define RENAME(a) a ## _X86
996 #include "swscale_template.c"
1004 #define RENAME(a) a ## _MMX
1005 #include "swscale_template.c"
1014 #define RENAME(a) a ## _MMX2
1015 #include "swscale_template.c"
1019 #ifdef COMPILE_3DNOW
1024 #define RENAME(a) a ## _3DNow
1025 #include "swscale_template.c"
1028 #endif //ARCH_X86 || ARCH_X86_64
1030 // minor note: the HAVE_xyz is messed up after that line so don't use it
1032 static double getSplineCoeff(double a, double b, double c, double d, double dist)
1034 // printf("%f %f %f %f %f\n", a,b,c,d,dist);
1035 if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;
1036 else return getSplineCoeff( 0.0,
1043 static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
1044 int srcW, int dstW, int filterAlign, int one, int flags,
1045 SwsVector *srcFilter, SwsVector *dstFilter, double param[2])
1051 int64_t *filter=NULL;
1052 int64_t *filter2=NULL;
1053 const int64_t fone= 1LL<<54;
1055 #if defined(ARCH_X86)
1056 if (flags & SWS_CPU_CAPS_MMX)
1057 asm volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
1060 // Note the +1 is for the MMXscaler which reads over the end
1061 *filterPos = av_malloc((dstW+1)*sizeof(int16_t));
1063 if (FFABS(xInc - 0x10000) <10) // unscaled
1067 filter= av_mallocz(dstW*sizeof(*filter)*filterSize);
1069 for (i=0; i<dstW; i++)
1071 filter[i*filterSize]= fone;
1076 else if (flags&SWS_POINT) // lame looking point sampling mode
1081 filter= av_malloc(dstW*sizeof(*filter)*filterSize);
1083 xDstInSrc= xInc/2 - 0x8000;
1084 for (i=0; i<dstW; i++)
1086 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
1088 (*filterPos)[i]= xx;
1093 else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
1097 if (flags&SWS_BICUBIC) filterSize= 4;
1098 else if (flags&SWS_X ) filterSize= 4;
1099 else filterSize= 2; // SWS_BILINEAR / SWS_AREA
1100 filter= av_malloc(dstW*sizeof(*filter)*filterSize);
1102 xDstInSrc= xInc/2 - 0x8000;
1103 for (i=0; i<dstW; i++)
1105 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
1108 (*filterPos)[i]= xx;
1109 //Bilinear upscale / linear interpolate / Area averaging
1110 for (j=0; j<filterSize; j++)
1112 int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);
1113 if (coeff<0) coeff=0;
1114 filter[i*filterSize + j]= coeff;
1125 if (flags&SWS_BICUBIC) sizeFactor= 4;
1126 else if (flags&SWS_X) sizeFactor= 8;
1127 else if (flags&SWS_AREA) sizeFactor= 1; //downscale only, for upscale it is bilinear
1128 else if (flags&SWS_GAUSS) sizeFactor= 8; // infinite ;)
1129 else if (flags&SWS_LANCZOS) sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;
1130 else if (flags&SWS_SINC) sizeFactor= 20; // infinite ;)
1131 else if (flags&SWS_SPLINE) sizeFactor= 20; // infinite ;)
1132 else if (flags&SWS_BILINEAR) sizeFactor= 2;
1134 sizeFactor= 0; //GCC warning killer
1138 if (xInc <= 1<<16) filterSize= 1 + sizeFactor; // upscale
1139 else filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;
1141 if (filterSize > srcW-2) filterSize=srcW-2;
1143 filter= av_malloc(dstW*sizeof(*filter)*filterSize);
1145 xDstInSrc= xInc - 0x10000;
1146 for (i=0; i<dstW; i++)
1148 int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);
1150 (*filterPos)[i]= xx;
1151 for (j=0; j<filterSize; j++)
1153 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;
1159 floatd= d * (1.0/(1<<30));
1161 if (flags & SWS_BICUBIC)
1163 int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] : 0) * (1<<24);
1164 int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);
1165 int64_t dd = ( d*d)>>30;
1166 int64_t ddd= (dd*d)>>30;
1169 coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);
1170 else if (d < 1LL<<31)
1171 coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);
1174 coeff *= fone>>(30+24);
1176 /* else if (flags & SWS_X)
1178 double p= param ? param*0.01 : 0.3;
1179 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1180 coeff*= pow(2.0, - p*d*d);
1182 else if (flags & SWS_X)
1184 double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
1191 if (c<0.0) c= -pow(-c, A);
1193 coeff= (c*0.5 + 0.5)*fone;
1195 else if (flags & SWS_AREA)
1197 int64_t d2= d - (1<<29);
1198 if (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));
1199 else if (d2*xInc < (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));
1201 coeff *= fone>>(30+16);
1203 else if (flags & SWS_GAUSS)
1205 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1206 coeff = (pow(2.0, - p*floatd*floatd))*fone;
1208 else if (flags & SWS_SINC)
1210 coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;
1212 else if (flags & SWS_LANCZOS)
1214 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1215 coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;
1216 if (floatd>p) coeff=0;
1218 else if (flags & SWS_BILINEAR)
1221 if (coeff<0) coeff=0;
1222 coeff *= fone >> 30;
1224 else if (flags & SWS_SPLINE)
1226 double p=-2.196152422706632;
1227 coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;
1230 coeff= 0.0; //GCC warning killer
1234 filter[i*filterSize + j]= coeff;
1241 /* apply src & dst Filter to filter -> filter2
1244 assert(filterSize>0);
1245 filter2Size= filterSize;
1246 if (srcFilter) filter2Size+= srcFilter->length - 1;
1247 if (dstFilter) filter2Size+= dstFilter->length - 1;
1248 assert(filter2Size>0);
1249 filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));
1251 for (i=0; i<dstW; i++)
1256 for (k=0; k<srcFilter->length; k++){
1257 for (j=0; j<filterSize; j++)
1258 filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];
1261 for (j=0; j<filterSize; j++)
1262 filter2[i*filter2Size + j]= filter[i*filterSize + j];
1266 (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
1270 /* try to reduce the filter-size (step1 find size and shift left) */
1271 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
1273 for (i=dstW-1; i>=0; i--)
1275 int min= filter2Size;
1279 /* get rid off near zero elements on the left by shifting left */
1280 for (j=0; j<filter2Size; j++)
1283 cutOff += FFABS(filter2[i*filter2Size]);
1285 if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;
1287 /* preserve monotonicity because the core can't handle the filter otherwise */
1288 if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
1290 // Move filter coeffs left
1291 for (k=1; k<filter2Size; k++)
1292 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
1293 filter2[i*filter2Size + k - 1]= 0;
1298 /* count near zeros on the right */
1299 for (j=filter2Size-1; j>0; j--)
1301 cutOff += FFABS(filter2[i*filter2Size + j]);
1303 if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;
1307 if (min>minFilterSize) minFilterSize= min;
1310 if (flags & SWS_CPU_CAPS_ALTIVEC) {
1311 // we can handle the special case 4,
1312 // so we don't want to go to the full 8
1313 if (minFilterSize < 5)
1316 // we really don't want to waste our time
1317 // doing useless computation, so fall-back on
1318 // the scalar C code for very small filter.
1319 // vectorizing is worth it only if you have
1320 // decent-sized vector.
1321 if (minFilterSize < 3)
1325 if (flags & SWS_CPU_CAPS_MMX) {
1326 // special case for unscaled vertical filtering
1327 if (minFilterSize == 1 && filterAlign == 2)
1331 assert(minFilterSize > 0);
1332 filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
1333 assert(filterSize > 0);
1334 filter= av_malloc(filterSize*dstW*sizeof(*filter));
1335 if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)
1337 *outFilterSize= filterSize;
1339 if (flags&SWS_PRINT_INFO)
1340 av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
1341 /* try to reduce the filter-size (step2 reduce it) */
1342 for (i=0; i<dstW; i++)
1346 for (j=0; j<filterSize; j++)
1348 if (j>=filter2Size) filter[i*filterSize + j]= 0;
1349 else filter[i*filterSize + j]= filter2[i*filter2Size + j];
1350 if((flags & SWS_BITEXACT) && j>=minFilterSize)
1351 filter[i*filterSize + j]= 0;
1356 //FIXME try to align filterpos if possible
1359 for (i=0; i<dstW; i++)
1362 if ((*filterPos)[i] < 0)
1364 // Move filter coeffs left to compensate for filterPos
1365 for (j=1; j<filterSize; j++)
1367 int left= FFMAX(j + (*filterPos)[i], 0);
1368 filter[i*filterSize + left] += filter[i*filterSize + j];
1369 filter[i*filterSize + j]=0;
1374 if ((*filterPos)[i] + filterSize > srcW)
1376 int shift= (*filterPos)[i] + filterSize - srcW;
1377 // Move filter coeffs right to compensate for filterPos
1378 for (j=filterSize-2; j>=0; j--)
1380 int right= FFMIN(j + shift, filterSize-1);
1381 filter[i*filterSize +right] += filter[i*filterSize +j];
1382 filter[i*filterSize +j]=0;
1384 (*filterPos)[i]= srcW - filterSize;
1388 // Note the +1 is for the MMXscaler which reads over the end
1389 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
1390 *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));
1392 /* Normalize & Store in outFilter */
1393 for (i=0; i<dstW; i++)
1399 for (j=0; j<filterSize; j++)
1401 sum+= filter[i*filterSize + j];
1403 sum= (sum + one/2)/ one;
1404 for (j=0; j<*outFilterSize; j++)
1406 int64_t v= filter[i*filterSize + j] + error;
1407 int intV= ROUNDED_DIV(v, sum);
1408 (*outFilter)[i*(*outFilterSize) + j]= intV;
1409 error= v - intV*sum;
1413 (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
1414 for (i=0; i<*outFilterSize; i++)
1416 int j= dstW*(*outFilterSize);
1417 (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
1428 static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
1431 long imm8OfPShufW1A;
1432 long imm8OfPShufW2A;
1433 long fragmentLengthA;
1435 long imm8OfPShufW1B;
1436 long imm8OfPShufW2B;
1437 long fragmentLengthB;
1442 // create an optimized horizontal scaling routine
1450 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
1451 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
1452 "movd 1(%%"REG_c", %%"REG_S"), %%mm1 \n\t"
1453 "punpcklbw %%mm7, %%mm1 \n\t"
1454 "punpcklbw %%mm7, %%mm0 \n\t"
1455 "pshufw $0xFF, %%mm1, %%mm1 \n\t"
1457 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1459 "psubw %%mm1, %%mm0 \n\t"
1460 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
1461 "pmullw %%mm3, %%mm0 \n\t"
1462 "psllw $7, %%mm1 \n\t"
1463 "paddw %%mm1, %%mm0 \n\t"
1465 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
1467 "add $8, %%"REG_a" \n\t"
1471 "lea " LOCAL_MANGLE(0b) ", %0 \n\t"
1472 "lea " LOCAL_MANGLE(1b) ", %1 \n\t"
1473 "lea " LOCAL_MANGLE(2b) ", %2 \n\t"
1478 "lea " LOCAL_MANGLE(9b) ", %3 \n\t"
1482 :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
1483 "=r" (fragmentLengthA)
1490 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
1491 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
1492 "punpcklbw %%mm7, %%mm0 \n\t"
1493 "pshufw $0xFF, %%mm0, %%mm1 \n\t"
1495 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1497 "psubw %%mm1, %%mm0 \n\t"
1498 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
1499 "pmullw %%mm3, %%mm0 \n\t"
1500 "psllw $7, %%mm1 \n\t"
1501 "paddw %%mm1, %%mm0 \n\t"
1503 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
1505 "add $8, %%"REG_a" \n\t"
1509 "lea " LOCAL_MANGLE(0b) ", %0 \n\t"
1510 "lea " LOCAL_MANGLE(1b) ", %1 \n\t"
1511 "lea " LOCAL_MANGLE(2b) ", %2 \n\t"
1516 "lea " LOCAL_MANGLE(9b) ", %3 \n\t"
1520 :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
1521 "=r" (fragmentLengthB)
1524 xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1527 for (i=0; i<dstW/numSplits; i++)
1534 int b=((xpos+xInc)>>16) - xx;
1535 int c=((xpos+xInc*2)>>16) - xx;
1536 int d=((xpos+xInc*3)>>16) - xx;
1538 filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
1539 filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
1540 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
1541 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
1546 int maxShift= 3-(d+1);
1549 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
1551 funnyCode[fragmentPos + imm8OfPShufW1B]=
1552 (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
1553 funnyCode[fragmentPos + imm8OfPShufW2B]=
1554 a | (b<<2) | (c<<4) | (d<<6);
1556 if (i+3>=dstW) shift=maxShift; //avoid overread
1557 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
1559 if (shift && i>=shift)
1561 funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
1562 funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
1563 filterPos[i/2]-=shift;
1566 fragmentPos+= fragmentLengthB;
1573 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
1575 funnyCode[fragmentPos + imm8OfPShufW1A]=
1576 funnyCode[fragmentPos + imm8OfPShufW2A]=
1577 a | (b<<2) | (c<<4) | (d<<6);
1579 if (i+4>=dstW) shift=maxShift; //avoid overread
1580 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
1582 if (shift && i>=shift)
1584 funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
1585 funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
1586 filterPos[i/2]-=shift;
1589 fragmentPos+= fragmentLengthA;
1592 funnyCode[fragmentPos]= RET;
1596 filterPos[i/2]= xpos>>16; // needed to jump to the next part
1598 #endif /* COMPILE_MMX2 */
1600 static void globalInit(void){
1601 // generating tables:
1603 for (i=0; i<768; i++){
1604 int c= av_clip_uint8(i-256);
1609 static SwsFunc getSwsFunc(int flags){
1611 #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)
1612 #if defined(ARCH_X86)
1613 // ordered per speed fastest first
1614 if (flags & SWS_CPU_CAPS_MMX2)
1615 return swScale_MMX2;
1616 else if (flags & SWS_CPU_CAPS_3DNOW)
1617 return swScale_3DNow;
1618 else if (flags & SWS_CPU_CAPS_MMX)
1625 if (flags & SWS_CPU_CAPS_ALTIVEC)
1626 return swScale_altivec;
1631 #endif /* defined(ARCH_X86) */
1632 #else //RUNTIME_CPUDETECT
1634 return swScale_MMX2;
1635 #elif defined (HAVE_3DNOW)
1636 return swScale_3DNow;
1637 #elif defined (HAVE_MMX)
1639 #elif defined (HAVE_ALTIVEC)
1640 return swScale_altivec;
1644 #endif //!RUNTIME_CPUDETECT
1647 static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1648 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1649 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1651 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1652 memcpy(dst, src[0], srcSliceH*dstStride[0]);
1656 uint8_t *srcPtr= src[0];
1657 uint8_t *dstPtr= dst;
1658 for (i=0; i<srcSliceH; i++)
1660 memcpy(dstPtr, srcPtr, c->srcW);
1661 srcPtr+= srcStride[0];
1662 dstPtr+= dstStride[0];
1665 dst = dstParam[1] + dstStride[1]*srcSliceY/2;
1666 if (c->dstFormat == PIX_FMT_NV12)
1667 interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);
1669 interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);
1674 static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1675 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1676 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1678 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1683 static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1684 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1685 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1687 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1692 static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1693 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1694 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1696 yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
1701 static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1702 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1703 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1705 yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
1710 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
1711 static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1712 int srcSliceH, uint8_t* dst[], int dstStride[]){
1713 const int srcFormat= c->srcFormat;
1714 const int dstFormat= c->dstFormat;
1715 const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;
1716 const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;
1717 const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1718 const int dstId= fmt_depth(dstFormat) >> 2;
1719 void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
1722 if ( (isBGR(srcFormat) && isBGR(dstFormat))
1723 || (isRGB(srcFormat) && isRGB(dstFormat))){
1724 switch(srcId | (dstId<<4)){
1725 case 0x34: conv= rgb16to15; break;
1726 case 0x36: conv= rgb24to15; break;
1727 case 0x38: conv= rgb32to15; break;
1728 case 0x43: conv= rgb15to16; break;
1729 case 0x46: conv= rgb24to16; break;
1730 case 0x48: conv= rgb32to16; break;
1731 case 0x63: conv= rgb15to24; break;
1732 case 0x64: conv= rgb16to24; break;
1733 case 0x68: conv= rgb32to24; break;
1734 case 0x83: conv= rgb15to32; break;
1735 case 0x84: conv= rgb16to32; break;
1736 case 0x86: conv= rgb24to32; break;
1737 default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1738 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1740 }else if ( (isBGR(srcFormat) && isRGB(dstFormat))
1741 || (isRGB(srcFormat) && isBGR(dstFormat))){
1742 switch(srcId | (dstId<<4)){
1743 case 0x33: conv= rgb15tobgr15; break;
1744 case 0x34: conv= rgb16tobgr15; break;
1745 case 0x36: conv= rgb24tobgr15; break;
1746 case 0x38: conv= rgb32tobgr15; break;
1747 case 0x43: conv= rgb15tobgr16; break;
1748 case 0x44: conv= rgb16tobgr16; break;
1749 case 0x46: conv= rgb24tobgr16; break;
1750 case 0x48: conv= rgb32tobgr16; break;
1751 case 0x63: conv= rgb15tobgr24; break;
1752 case 0x64: conv= rgb16tobgr24; break;
1753 case 0x66: conv= rgb24tobgr24; break;
1754 case 0x68: conv= rgb32tobgr24; break;
1755 case 0x83: conv= rgb15tobgr32; break;
1756 case 0x84: conv= rgb16tobgr32; break;
1757 case 0x86: conv= rgb24tobgr32; break;
1758 case 0x88: conv= rgb32tobgr32; break;
1759 default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1760 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1763 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1764 sws_format_name(srcFormat), sws_format_name(dstFormat));
1769 uint8_t *srcPtr= src[0];
1770 if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)
1771 srcPtr += ALT32_CORR;
1773 if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
1774 conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1778 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1780 for (i=0; i<srcSliceH; i++)
1782 conv(srcPtr, dstPtr, c->srcW*srcBpp);
1783 srcPtr+= srcStride[0];
1784 dstPtr+= dstStride[0];
1791 static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1792 int srcSliceH, uint8_t* dst[], int dstStride[]){
1796 dst[0]+ srcSliceY *dstStride[0],
1797 dst[1]+(srcSliceY>>1)*dstStride[1],
1798 dst[2]+(srcSliceY>>1)*dstStride[2],
1800 dstStride[0], dstStride[1], srcStride[0]);
1804 static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1805 int srcSliceH, uint8_t* dst[], int dstStride[]){
1809 if (srcStride[0]==dstStride[0] && srcStride[0] > 0)
1810 memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1812 uint8_t *srcPtr= src[0];
1813 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1815 for (i=0; i<srcSliceH; i++)
1817 memcpy(dstPtr, srcPtr, c->srcW);
1818 srcPtr+= srcStride[0];
1819 dstPtr+= dstStride[0];
1823 if (c->dstFormat==PIX_FMT_YUV420P){
1824 planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
1825 planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
1827 planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
1828 planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
1833 /* unscaled copy like stuff (assumes nearly identical formats) */
1834 static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1835 int srcSliceH, uint8_t* dst[], int dstStride[])
1837 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1838 memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1842 uint8_t *srcPtr= src[0];
1843 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1846 /* universal length finder */
1847 while(length+c->srcW <= FFABS(dstStride[0])
1848 && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
1851 for (i=0; i<srcSliceH; i++)
1853 memcpy(dstPtr, srcPtr, length);
1854 srcPtr+= srcStride[0];
1855 dstPtr+= dstStride[0];
1861 static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1862 int srcSliceH, uint8_t* dst[], int dstStride[])
1865 for (plane=0; plane<3; plane++)
1867 int length= plane==0 ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
1868 int y= plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1869 int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1871 if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
1873 if (!isGray(c->dstFormat))
1874 memset(dst[plane], 128, dstStride[plane]*height);
1878 if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
1879 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1883 uint8_t *srcPtr= src[plane];
1884 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1885 for (i=0; i<height; i++)
1887 memcpy(dstPtr, srcPtr, length);
1888 srcPtr+= srcStride[plane];
1889 dstPtr+= dstStride[plane];
1897 static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1898 int srcSliceH, uint8_t* dst[], int dstStride[]){
1900 int length= c->srcW;
1902 int height= srcSliceH;
1904 uint8_t *srcPtr= src[0];
1905 uint8_t *dstPtr= dst[0] + dstStride[0]*y;
1907 if (!isGray(c->dstFormat)){
1908 int height= -((-srcSliceH)>>c->chrDstVSubSample);
1909 memset(dst[1], 128, dstStride[1]*height);
1910 memset(dst[2], 128, dstStride[2]*height);
1912 if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;
1913 for (i=0; i<height; i++)
1915 for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
1916 srcPtr+= srcStride[0];
1917 dstPtr+= dstStride[0];
1922 static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1923 int srcSliceH, uint8_t* dst[], int dstStride[]){
1925 int length= c->srcW;
1927 int height= srcSliceH;
1929 uint8_t *srcPtr= src[0];
1930 uint8_t *dstPtr= dst[0] + dstStride[0]*y;
1931 for (i=0; i<height; i++)
1933 for (j=0; j<length; j++)
1935 dstPtr[j<<1] = srcPtr[j];
1936 dstPtr[(j<<1)+1] = srcPtr[j];
1938 srcPtr+= srcStride[0];
1939 dstPtr+= dstStride[0];
1944 static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1945 int srcSliceH, uint8_t* dst[], int dstStride[]){
1947 int length= c->srcW;
1949 int height= srcSliceH;
1951 uint16_t *srcPtr= (uint16_t*)src[0];
1952 uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);
1953 for (i=0; i<height; i++)
1955 for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);
1956 srcPtr+= srcStride[0]/2;
1957 dstPtr+= dstStride[0]/2;
1963 static void getSubSampleFactors(int *h, int *v, int format){
1965 case PIX_FMT_UYVY422:
1966 case PIX_FMT_YUYV422:
1970 case PIX_FMT_YUV420P:
1971 case PIX_FMT_YUVA420P:
1972 case PIX_FMT_GRAY16BE:
1973 case PIX_FMT_GRAY16LE:
1974 case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented
1980 case PIX_FMT_YUV440P:
1984 case PIX_FMT_YUV410P:
1988 case PIX_FMT_YUV444P:
1992 case PIX_FMT_YUV422P:
1996 case PIX_FMT_YUV411P:
2007 static uint16_t roundToInt16(int64_t f){
2008 int r= (f + (1<<15))>>16;
2009 if (r<-0x7FFF) return 0x8000;
2010 else if (r> 0x7FFF) return 0x7FFF;
2015 * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]
2016 * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235
2017 * @return -1 if not supported
2019 int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){
2020 int64_t crv = inv_table[0];
2021 int64_t cbu = inv_table[1];
2022 int64_t cgu = -inv_table[2];
2023 int64_t cgv = -inv_table[3];
2027 memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
2028 memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
2030 c->brightness= brightness;
2031 c->contrast = contrast;
2032 c->saturation= saturation;
2033 c->srcRange = srcRange;
2034 c->dstRange = dstRange;
2035 if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return 0;
2037 c->uOffset= 0x0400040004000400LL;
2038 c->vOffset= 0x0400040004000400LL;
2044 crv= (crv*224) / 255;
2045 cbu= (cbu*224) / 255;
2046 cgu= (cgu*224) / 255;
2047 cgv= (cgv*224) / 255;
2050 cy = (cy *contrast )>>16;
2051 crv= (crv*contrast * saturation)>>32;
2052 cbu= (cbu*contrast * saturation)>>32;
2053 cgu= (cgu*contrast * saturation)>>32;
2054 cgv= (cgv*contrast * saturation)>>32;
2056 oy -= 256*brightness;
2058 c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
2059 c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
2060 c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
2061 c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
2062 c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
2063 c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
2065 c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy <<13);
2066 c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);
2067 c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);
2068 c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);
2069 c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);
2070 c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);
2072 yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
2075 #ifdef COMPILE_ALTIVEC
2076 if (c->flags & SWS_CPU_CAPS_ALTIVEC)
2077 yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);
2083 * @return -1 if not supported
2085 int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){
2086 if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
2088 *inv_table = c->srcColorspaceTable;
2089 *table = c->dstColorspaceTable;
2090 *srcRange = c->srcRange;
2091 *dstRange = c->dstRange;
2092 *brightness= c->brightness;
2093 *contrast = c->contrast;
2094 *saturation= c->saturation;
2099 static int handle_jpeg(int *format)
2102 case PIX_FMT_YUVJ420P:
2103 *format = PIX_FMT_YUV420P;
2105 case PIX_FMT_YUVJ422P:
2106 *format = PIX_FMT_YUV422P;
2108 case PIX_FMT_YUVJ444P:
2109 *format = PIX_FMT_YUV444P;
2111 case PIX_FMT_YUVJ440P:
2112 *format = PIX_FMT_YUV440P;
2119 SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
2120 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){
2124 int usesVFilter, usesHFilter;
2125 int unscaled, needsDither;
2126 int srcRange, dstRange;
2127 SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
2128 #if defined(ARCH_X86)
2129 if (flags & SWS_CPU_CAPS_MMX)
2130 asm volatile("emms\n\t"::: "memory");
2133 #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off
2134 flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
2136 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
2137 #elif defined (HAVE_3DNOW)
2138 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
2139 #elif defined (HAVE_MMX)
2140 flags |= SWS_CPU_CAPS_MMX;
2141 #elif defined (HAVE_ALTIVEC)
2142 flags |= SWS_CPU_CAPS_ALTIVEC;
2143 #elif defined (ARCH_BFIN)
2144 flags |= SWS_CPU_CAPS_BFIN;
2146 #endif /* RUNTIME_CPUDETECT */
2147 if (clip_table[512] != 255) globalInit();
2148 if (!rgb15to16) sws_rgb2rgb_init(flags);
2150 unscaled = (srcW == dstW && srcH == dstH);
2151 needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
2152 && (fmt_depth(dstFormat))<24
2153 && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
2155 srcRange = handle_jpeg(&srcFormat);
2156 dstRange = handle_jpeg(&dstFormat);
2158 if (!isSupportedIn(srcFormat))
2160 av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));
2163 if (!isSupportedOut(dstFormat))
2165 av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));
2169 i= flags & ( SWS_POINT
2180 if(!i || (i & (i-1)))
2182 av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be choosen\n");
2187 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
2189 av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
2190 srcW, srcH, dstW, dstH);
2193 if(srcW > VOFW || dstW > VOFW){
2194 av_log(NULL, AV_LOG_ERROR, "swScaler: Compile time max width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");
2198 if (!dstFilter) dstFilter= &dummyFilter;
2199 if (!srcFilter) srcFilter= &dummyFilter;
2201 c= av_mallocz(sizeof(SwsContext));
2203 c->av_class = &sws_context_class;
2208 c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
2209 c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
2211 c->dstFormat= dstFormat;
2212 c->srcFormat= srcFormat;
2213 c->vRounder= 4* 0x0001000100010001ULL;
2215 usesHFilter= usesVFilter= 0;
2216 if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;
2217 if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;
2218 if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;
2219 if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;
2220 if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;
2221 if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;
2222 if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;
2223 if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;
2225 getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
2226 getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
2228 // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
2229 if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
2231 // drop some chroma lines if the user wants it
2232 c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
2233 c->chrSrcVSubSample+= c->vChrDrop;
2235 // drop every 2. pixel for chroma calculation unless user wants full chroma
2236 if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)
2237 && srcFormat!=PIX_FMT_RGB8 && srcFormat!=PIX_FMT_BGR8
2238 && srcFormat!=PIX_FMT_RGB4 && srcFormat!=PIX_FMT_BGR4
2239 && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE
2240 && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))
2241 c->chrSrcHSubSample=1;
2244 c->param[0] = param[0];
2245 c->param[1] = param[1];
2248 c->param[1] = SWS_PARAM_DEFAULT;
2251 c->chrIntHSubSample= c->chrDstHSubSample;
2252 c->chrIntVSubSample= c->chrSrcVSubSample;
2254 // Note the -((-x)>>y) is so that we always round toward +inf.
2255 c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
2256 c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
2257 c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
2258 c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
2260 sws_setColorspaceDetails(c, Inverse_Table_6_9[SWS_CS_DEFAULT], srcRange, Inverse_Table_6_9[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);
2262 /* unscaled special Cases */
2263 if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))
2266 if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))
2268 c->swScale= PlanarToNV12Wrapper;
2272 if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat))
2273 && !(flags & SWS_ACCURATE_RND))
2275 c->swScale= yuv2rgb_get_func_ptr(c);
2279 if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_BITEXACT))
2281 c->swScale= yvu9toyv12Wrapper;
2285 if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_ACCURATE_RND))
2286 c->swScale= bgr24toyv12Wrapper;
2288 /* rgb/bgr -> rgb/bgr (no dither needed forms) */
2289 if ( (isBGR(srcFormat) || isRGB(srcFormat))
2290 && (isBGR(dstFormat) || isRGB(dstFormat))
2291 && srcFormat != PIX_FMT_BGR8 && dstFormat != PIX_FMT_BGR8
2292 && srcFormat != PIX_FMT_RGB8 && dstFormat != PIX_FMT_RGB8
2293 && srcFormat != PIX_FMT_BGR4 && dstFormat != PIX_FMT_BGR4
2294 && srcFormat != PIX_FMT_RGB4 && dstFormat != PIX_FMT_RGB4
2295 && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
2296 && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
2297 && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
2298 && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE
2299 && dstFormat != PIX_FMT_RGB32_1
2300 && dstFormat != PIX_FMT_BGR32_1
2301 && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
2302 c->swScale= rgb2rgbWrapper;
2304 if (srcFormat == PIX_FMT_YUV422P)
2306 if (dstFormat == PIX_FMT_YUYV422)
2307 c->swScale= YUV422PToYuy2Wrapper;
2308 else if (dstFormat == PIX_FMT_UYVY422)
2309 c->swScale= YUV422PToUyvyWrapper;
2312 /* LQ converters if -sws 0 or -sws 4*/
2313 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
2315 if (srcFormat == PIX_FMT_YUV420P)
2317 if (dstFormat == PIX_FMT_YUYV422)
2318 c->swScale= PlanarToYuy2Wrapper;
2319 else if (dstFormat == PIX_FMT_UYVY422)
2320 c->swScale= PlanarToUyvyWrapper;
2324 #ifdef COMPILE_ALTIVEC
2325 if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
2326 srcFormat == PIX_FMT_YUV420P) {
2327 // unscaled YV12 -> packed YUV, we want speed
2328 if (dstFormat == PIX_FMT_YUYV422)
2329 c->swScale= yv12toyuy2_unscaled_altivec;
2330 else if (dstFormat == PIX_FMT_UYVY422)
2331 c->swScale= yv12touyvy_unscaled_altivec;
2336 if ( srcFormat == dstFormat
2337 || (isPlanarYUV(srcFormat) && isGray(dstFormat))
2338 || (isPlanarYUV(dstFormat) && isGray(srcFormat)))
2340 if (isPacked(c->srcFormat))
2341 c->swScale= packedCopy;
2342 else /* Planar YUV or gray */
2343 c->swScale= planarCopy;
2346 /* gray16{le,be} conversions */
2347 if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))
2349 c->swScale= gray16togray;
2351 if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))
2353 c->swScale= graytogray16;
2355 if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))
2357 c->swScale= gray16swap;
2361 if (flags & SWS_CPU_CAPS_BFIN)
2362 ff_bfin_get_unscaled_swscale (c);
2366 if (flags&SWS_PRINT_INFO)
2367 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",
2368 sws_format_name(srcFormat), sws_format_name(dstFormat));
2373 if (flags & SWS_CPU_CAPS_MMX2)
2375 c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
2376 if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
2378 if (flags&SWS_PRINT_INFO)
2379 av_log(c, AV_LOG_INFO, "output Width is not a multiple of 32 -> no MMX2 scaler\n");
2381 if (usesHFilter) c->canMMX2BeUsed=0;
2386 c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
2387 c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
2389 // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
2390 // but only for the FAST_BILINEAR mode otherwise do correct scaling
2391 // n-2 is the last chrominance sample available
2392 // this is not perfect, but no one should notice the difference, the more correct variant
2393 // would be like the vertical one, but that would require some special code for the
2394 // first and last pixel
2395 if (flags&SWS_FAST_BILINEAR)
2397 if (c->canMMX2BeUsed)
2402 //we don't use the x86asm scaler if mmx is available
2403 else if (flags & SWS_CPU_CAPS_MMX)
2405 c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
2406 c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
2410 /* precalculate horizontal scaler filter coefficients */
2412 const int filterAlign=
2413 (flags & SWS_CPU_CAPS_MMX) ? 4 :
2414 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2417 initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
2418 srcW , dstW, filterAlign, 1<<14,
2419 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2420 srcFilter->lumH, dstFilter->lumH, c->param);
2421 initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
2422 c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
2423 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2424 srcFilter->chrH, dstFilter->chrH, c->param);
2426 #define MAX_FUNNY_CODE_SIZE 10000
2427 #if defined(COMPILE_MMX2)
2428 // can't downscale !!!
2429 if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
2431 #ifdef MAP_ANONYMOUS
2432 c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2433 c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2435 c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2436 c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2439 c->lumMmx2Filter = av_malloc((dstW /8+8)*sizeof(int16_t));
2440 c->chrMmx2Filter = av_malloc((c->chrDstW /4+8)*sizeof(int16_t));
2441 c->lumMmx2FilterPos= av_malloc((dstW /2/8+8)*sizeof(int32_t));
2442 c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));
2444 initMMX2HScaler( dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
2445 initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
2447 #endif /* defined(COMPILE_MMX2) */
2448 } // Init Horizontal stuff
2452 /* precalculate vertical scaler filter coefficients */
2454 const int filterAlign=
2455 (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :
2456 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2459 initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
2460 srcH , dstH, filterAlign, (1<<12),
2461 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2462 srcFilter->lumV, dstFilter->lumV, c->param);
2463 initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
2464 c->chrSrcH, c->chrDstH, filterAlign, (1<<12),
2465 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2466 srcFilter->chrV, dstFilter->chrV, c->param);
2469 c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
2470 c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);
2472 for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
2474 short *p = (short *)&c->vYCoeffsBank[i];
2476 p[j] = c->vLumFilter[i];
2479 for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {
2481 short *p = (short *)&c->vCCoeffsBank[i];
2483 p[j] = c->vChrFilter[i];
2488 // Calculate Buffer Sizes so that they won't run out while handling these damn slices
2489 c->vLumBufSize= c->vLumFilterSize;
2490 c->vChrBufSize= c->vChrFilterSize;
2491 for (i=0; i<dstH; i++)
2493 int chrI= i*c->chrDstH / dstH;
2494 int nextSlice= FFMAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
2495 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
2497 nextSlice>>= c->chrSrcVSubSample;
2498 nextSlice<<= c->chrSrcVSubSample;
2499 if (c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
2500 c->vLumBufSize= nextSlice - c->vLumFilterPos[i];
2501 if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
2502 c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
2505 // allocate pixbufs (we use dynamic allocation because otherwise we would need to
2506 c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));
2507 c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));
2508 //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)
2509 /* align at 16 bytes for AltiVec */
2510 for (i=0; i<c->vLumBufSize; i++)
2511 c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);
2512 for (i=0; i<c->vChrBufSize; i++)
2513 c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);
2515 //try to avoid drawing green stuff between the right end and the stride end
2516 for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);
2518 assert(2*VOFW == VOF);
2520 assert(c->chrDstH <= dstH);
2522 if (flags&SWS_PRINT_INFO)
2525 const char *dither= " dithered";
2527 const char *dither= "";
2529 if (flags&SWS_FAST_BILINEAR)
2530 av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");
2531 else if (flags&SWS_BILINEAR)
2532 av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");
2533 else if (flags&SWS_BICUBIC)
2534 av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");
2535 else if (flags&SWS_X)
2536 av_log(c, AV_LOG_INFO, "Experimental scaler, ");
2537 else if (flags&SWS_POINT)
2538 av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");
2539 else if (flags&SWS_AREA)
2540 av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");
2541 else if (flags&SWS_BICUBLIN)
2542 av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");
2543 else if (flags&SWS_GAUSS)
2544 av_log(c, AV_LOG_INFO, "Gaussian scaler, ");
2545 else if (flags&SWS_SINC)
2546 av_log(c, AV_LOG_INFO, "Sinc scaler, ");
2547 else if (flags&SWS_LANCZOS)
2548 av_log(c, AV_LOG_INFO, "Lanczos scaler, ");
2549 else if (flags&SWS_SPLINE)
2550 av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");
2552 av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");
2554 if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)
2555 av_log(c, AV_LOG_INFO, "from %s to%s %s ",
2556 sws_format_name(srcFormat), dither, sws_format_name(dstFormat));
2558 av_log(c, AV_LOG_INFO, "from %s to %s ",
2559 sws_format_name(srcFormat), sws_format_name(dstFormat));
2561 if (flags & SWS_CPU_CAPS_MMX2)
2562 av_log(c, AV_LOG_INFO, "using MMX2\n");
2563 else if (flags & SWS_CPU_CAPS_3DNOW)
2564 av_log(c, AV_LOG_INFO, "using 3DNOW\n");
2565 else if (flags & SWS_CPU_CAPS_MMX)
2566 av_log(c, AV_LOG_INFO, "using MMX\n");
2567 else if (flags & SWS_CPU_CAPS_ALTIVEC)
2568 av_log(c, AV_LOG_INFO, "using AltiVec\n");
2570 av_log(c, AV_LOG_INFO, "using C\n");
2573 if (flags & SWS_PRINT_INFO)
2575 if (flags & SWS_CPU_CAPS_MMX)
2577 if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
2578 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
2581 if (c->hLumFilterSize==4)
2582 av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");
2583 else if (c->hLumFilterSize==8)
2584 av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");
2586 av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");
2588 if (c->hChrFilterSize==4)
2589 av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");
2590 else if (c->hChrFilterSize==8)
2591 av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");
2593 av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");
2598 #if defined(ARCH_X86)
2599 av_log(c, AV_LOG_VERBOSE, "using X86-Asm scaler for horizontal scaling\n");
2601 if (flags & SWS_FAST_BILINEAR)
2602 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");
2604 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");
2607 if (isPlanarYUV(dstFormat))
2609 if (c->vLumFilterSize==1)
2610 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2612 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2616 if (c->vLumFilterSize==1 && c->vChrFilterSize==2)
2617 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
2618 " 2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2619 else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)
2620 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2622 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2625 if (dstFormat==PIX_FMT_BGR24)
2626 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 Converter\n",
2627 (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
2628 else if (dstFormat==PIX_FMT_RGB32)
2629 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2630 else if (dstFormat==PIX_FMT_BGR565)
2631 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2632 else if (dstFormat==PIX_FMT_BGR555)
2633 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2635 av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
2637 if (flags & SWS_PRINT_INFO)
2639 av_log(c, AV_LOG_DEBUG, "Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2640 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
2641 av_log(c, AV_LOG_DEBUG, "Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2642 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
2645 c->swScale= getSwsFunc(flags);
2650 * swscale wrapper, so we don't need to export the SwsContext.
2651 * assumes planar YUV to be in YUV order instead of YVU
2653 int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2654 int srcSliceH, uint8_t* dst[], int dstStride[]){
2656 uint8_t* src2[4]= {src[0], src[1], src[2]};
2658 int use_pal= c->srcFormat == PIX_FMT_PAL8
2659 || c->srcFormat == PIX_FMT_BGR4_BYTE
2660 || c->srcFormat == PIX_FMT_RGB4_BYTE
2661 || c->srcFormat == PIX_FMT_BGR8
2662 || c->srcFormat == PIX_FMT_RGB8;
2664 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
2665 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
2668 if (c->sliceDir == 0) {
2669 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
2673 for (i=0; i<256; i++){
2674 int p, r, g, b,y,u,v;
2675 if(c->srcFormat == PIX_FMT_PAL8){
2676 p=((uint32_t*)(src[1]))[i];
2680 }else if(c->srcFormat == PIX_FMT_RGB8){
2684 }else if(c->srcFormat == PIX_FMT_BGR8){
2688 }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){
2692 }else if(c->srcFormat == PIX_FMT_BGR4_BYTE){
2697 y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
2698 u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
2699 v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
2700 pal[i]= y + (u<<8) + (v<<16);
2702 src2[1]= (uint8_t*)pal;
2705 // copy strides, so they can safely be modified
2706 if (c->sliceDir == 1) {
2707 // slices go from top to bottom
2708 int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};
2709 int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};
2710 return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
2712 // slices go from bottom to top => we flip the image internally
2713 uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],
2714 dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],
2715 dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};
2716 int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};
2717 int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};
2719 src2[0] += (srcSliceH-1)*srcStride[0];
2721 src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
2722 src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
2724 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
2729 * swscale wrapper, so we don't need to export the SwsContext
2731 int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2732 int srcSliceH, uint8_t* dst[], int dstStride[]){
2733 return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
2736 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2737 float lumaSharpen, float chromaSharpen,
2738 float chromaHShift, float chromaVShift,
2741 SwsFilter *filter= av_malloc(sizeof(SwsFilter));
2743 if (lumaGBlur!=0.0){
2744 filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
2745 filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
2747 filter->lumH= sws_getIdentityVec();
2748 filter->lumV= sws_getIdentityVec();
2751 if (chromaGBlur!=0.0){
2752 filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
2753 filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
2755 filter->chrH= sws_getIdentityVec();
2756 filter->chrV= sws_getIdentityVec();
2759 if (chromaSharpen!=0.0){
2760 SwsVector *id= sws_getIdentityVec();
2761 sws_scaleVec(filter->chrH, -chromaSharpen);
2762 sws_scaleVec(filter->chrV, -chromaSharpen);
2763 sws_addVec(filter->chrH, id);
2764 sws_addVec(filter->chrV, id);
2768 if (lumaSharpen!=0.0){
2769 SwsVector *id= sws_getIdentityVec();
2770 sws_scaleVec(filter->lumH, -lumaSharpen);
2771 sws_scaleVec(filter->lumV, -lumaSharpen);
2772 sws_addVec(filter->lumH, id);
2773 sws_addVec(filter->lumV, id);
2777 if (chromaHShift != 0.0)
2778 sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
2780 if (chromaVShift != 0.0)
2781 sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
2783 sws_normalizeVec(filter->chrH, 1.0);
2784 sws_normalizeVec(filter->chrV, 1.0);
2785 sws_normalizeVec(filter->lumH, 1.0);
2786 sws_normalizeVec(filter->lumV, 1.0);
2788 if (verbose) sws_printVec(filter->chrH);
2789 if (verbose) sws_printVec(filter->lumH);
2795 * returns a normalized gaussian curve used to filter stuff
2796 * quality=3 is high quality, lowwer is lowwer quality
2798 SwsVector *sws_getGaussianVec(double variance, double quality){
2799 const int length= (int)(variance*quality + 0.5) | 1;
2801 double *coeff= av_malloc(length*sizeof(double));
2802 double middle= (length-1)*0.5;
2803 SwsVector *vec= av_malloc(sizeof(SwsVector));
2806 vec->length= length;
2808 for (i=0; i<length; i++)
2810 double dist= i-middle;
2811 coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);
2814 sws_normalizeVec(vec, 1.0);
2819 SwsVector *sws_getConstVec(double c, int length){
2821 double *coeff= av_malloc(length*sizeof(double));
2822 SwsVector *vec= av_malloc(sizeof(SwsVector));
2825 vec->length= length;
2827 for (i=0; i<length; i++)
2834 SwsVector *sws_getIdentityVec(void){
2835 return sws_getConstVec(1.0, 1);
2838 double sws_dcVec(SwsVector *a){
2842 for (i=0; i<a->length; i++)
2848 void sws_scaleVec(SwsVector *a, double scalar){
2851 for (i=0; i<a->length; i++)
2852 a->coeff[i]*= scalar;
2855 void sws_normalizeVec(SwsVector *a, double height){
2856 sws_scaleVec(a, height/sws_dcVec(a));
2859 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){
2860 int length= a->length + b->length - 1;
2861 double *coeff= av_malloc(length*sizeof(double));
2863 SwsVector *vec= av_malloc(sizeof(SwsVector));
2866 vec->length= length;
2868 for (i=0; i<length; i++) coeff[i]= 0.0;
2870 for (i=0; i<a->length; i++)
2872 for (j=0; j<b->length; j++)
2874 coeff[i+j]+= a->coeff[i]*b->coeff[j];
2881 static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){
2882 int length= FFMAX(a->length, b->length);
2883 double *coeff= av_malloc(length*sizeof(double));
2885 SwsVector *vec= av_malloc(sizeof(SwsVector));
2888 vec->length= length;
2890 for (i=0; i<length; i++) coeff[i]= 0.0;
2892 for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2893 for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
2898 static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){
2899 int length= FFMAX(a->length, b->length);
2900 double *coeff= av_malloc(length*sizeof(double));
2902 SwsVector *vec= av_malloc(sizeof(SwsVector));
2905 vec->length= length;
2907 for (i=0; i<length; i++) coeff[i]= 0.0;
2909 for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2910 for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
2915 /* shift left / or right if "shift" is negative */
2916 static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){
2917 int length= a->length + FFABS(shift)*2;
2918 double *coeff= av_malloc(length*sizeof(double));
2920 SwsVector *vec= av_malloc(sizeof(SwsVector));
2923 vec->length= length;
2925 for (i=0; i<length; i++) coeff[i]= 0.0;
2927 for (i=0; i<a->length; i++)
2929 coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
2935 void sws_shiftVec(SwsVector *a, int shift){
2936 SwsVector *shifted= sws_getShiftedVec(a, shift);
2938 a->coeff= shifted->coeff;
2939 a->length= shifted->length;
2943 void sws_addVec(SwsVector *a, SwsVector *b){
2944 SwsVector *sum= sws_sumVec(a, b);
2946 a->coeff= sum->coeff;
2947 a->length= sum->length;
2951 void sws_subVec(SwsVector *a, SwsVector *b){
2952 SwsVector *diff= sws_diffVec(a, b);
2954 a->coeff= diff->coeff;
2955 a->length= diff->length;
2959 void sws_convVec(SwsVector *a, SwsVector *b){
2960 SwsVector *conv= sws_getConvVec(a, b);
2962 a->coeff= conv->coeff;
2963 a->length= conv->length;
2967 SwsVector *sws_cloneVec(SwsVector *a){
2968 double *coeff= av_malloc(a->length*sizeof(double));
2970 SwsVector *vec= av_malloc(sizeof(SwsVector));
2973 vec->length= a->length;
2975 for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];
2980 void sws_printVec(SwsVector *a){
2986 for (i=0; i<a->length; i++)
2987 if (a->coeff[i]>max) max= a->coeff[i];
2989 for (i=0; i<a->length; i++)
2990 if (a->coeff[i]<min) min= a->coeff[i];
2994 for (i=0; i<a->length; i++)
2996 int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
2997 av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);
2998 for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");
2999 av_log(NULL, AV_LOG_DEBUG, "|\n");
3003 void sws_freeVec(SwsVector *a){
3005 av_freep(&a->coeff);
3010 void sws_freeFilter(SwsFilter *filter){
3011 if (!filter) return;
3013 if (filter->lumH) sws_freeVec(filter->lumH);
3014 if (filter->lumV) sws_freeVec(filter->lumV);
3015 if (filter->chrH) sws_freeVec(filter->chrH);
3016 if (filter->chrV) sws_freeVec(filter->chrV);
3021 void sws_freeContext(SwsContext *c){
3027 for (i=0; i<c->vLumBufSize; i++)
3028 av_freep(&c->lumPixBuf[i]);
3029 av_freep(&c->lumPixBuf);
3034 for (i=0; i<c->vChrBufSize; i++)
3035 av_freep(&c->chrPixBuf[i]);
3036 av_freep(&c->chrPixBuf);
3039 av_freep(&c->vLumFilter);
3040 av_freep(&c->vChrFilter);
3041 av_freep(&c->hLumFilter);
3042 av_freep(&c->hChrFilter);
3044 av_freep(&c->vYCoeffsBank);
3045 av_freep(&c->vCCoeffsBank);
3048 av_freep(&c->vLumFilterPos);
3049 av_freep(&c->vChrFilterPos);
3050 av_freep(&c->hLumFilterPos);
3051 av_freep(&c->hChrFilterPos);
3053 #if defined(ARCH_X86) && defined(CONFIG_GPL)
3054 #ifdef MAP_ANONYMOUS
3055 if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);
3056 if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);
3058 av_free(c->funnyYCode);
3059 av_free(c->funnyUVCode);
3062 c->funnyUVCode=NULL;
3063 #endif /* defined(ARCH_X86) */
3065 av_freep(&c->lumMmx2Filter);
3066 av_freep(&c->chrMmx2Filter);
3067 av_freep(&c->lumMmx2FilterPos);
3068 av_freep(&c->chrMmx2FilterPos);
3069 av_freep(&c->yuvTable);
3075 * Checks if context is valid or reallocs a new one instead.
3076 * If context is NULL, just calls sws_getContext() to get a new one.
3077 * Otherwise, checks if the parameters are the same already saved in context.
3078 * If that is the case, returns the current context.
3079 * Otherwise, frees context and gets a new one.
3081 * Be warned that srcFilter, dstFilter are not checked, they are
3082 * asumed to remain valid.
3084 struct SwsContext *sws_getCachedContext(struct SwsContext *context,
3085 int srcW, int srcH, int srcFormat,
3086 int dstW, int dstH, int dstFormat, int flags,
3087 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)
3089 static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};
3092 param = default_param;
3095 if (context->srcW != srcW || context->srcH != srcH ||
3096 context->srcFormat != srcFormat ||
3097 context->dstW != dstW || context->dstH != dstH ||
3098 context->dstFormat != dstFormat || context->flags != flags ||
3099 context->param[0] != param[0] || context->param[1] != param[1])
3101 sws_freeContext(context);
3106 return sws_getContext(srcW, srcH, srcFormat,
3107 dstW, dstH, dstFormat, flags,
3108 srcFilter, dstFilter, param);