2 Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 the C code (not assembly, mmx, ...) of the swscaler which has been written
19 by Michael Niedermayer can be used under the LGPL license too
23 supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8/Y800, YVU9/IF09
24 supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
25 {BGR,RGB}{1,4,8,15,16} support dithering
27 unscaled special converters (YV12=I420=IYUV, Y800=Y8)
28 YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
33 BGR24 -> BGR32 & RGB24 -> RGB32
34 BGR32 -> BGR24 & RGB32 -> RGB24
39 tested special converters (most are tested actually but i didnt write it down ...)
46 untested special converters
47 YV12/I420 -> BGR15/BGR24/BGR32 (its the yuv2rgb stuff, so it should be ok)
48 YV12/I420 -> YV12/I420
49 YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
50 BGR24 -> BGR32 & RGB24 -> RGB32
51 BGR32 -> BGR24 & RGB32 -> RGB24
67 #ifdef HAVE_SYS_MMAN_H
69 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
70 #define MAP_ANONYMOUS MAP_ANON
74 #include "swscale_internal.h"
79 #include "libvo/fastmemcpy.h"
89 //#define WORDS_BIGENDIAN
92 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
94 #define RET 0xC3 //near return opcode for X86
97 #define ASSERT(x) assert(x);
105 #define PI 3.14159265358979323846
108 #define isSupportedIn(x) ((x)==PIX_FMT_YUV420P || (x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422\
109 || (x)==PIX_FMT_RGB32|| (x)==PIX_FMT_BGR24|| (x)==PIX_FMT_BGR565|| (x)==PIX_FMT_BGR555\
110 || (x)==PIX_FMT_BGR32|| (x)==PIX_FMT_RGB24\
111 || (x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_YUV410P\
112 || (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_YUV422P || (x)==PIX_FMT_YUV411P)
113 #define isSupportedOut(x) ((x)==PIX_FMT_YUV420P || (x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422\
114 || (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_YUV422P || (x)==PIX_FMT_YUV411P\
115 || isRGB(x) || isBGR(x)\
116 || (x)==PIX_FMT_NV12 || (x)==PIX_FMT_NV21\
117 || (x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_YUV410P)
118 #define isPacked(x) ((x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422 ||isRGB(x) || isBGR(x))
120 #define RGB2YUV_SHIFT 16
121 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
122 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
123 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
124 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
125 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
126 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
127 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
128 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
129 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
131 extern const int32_t Inverse_Table_6_9[8][4];
135 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
138 more intelligent missalignment avoidance for the horizontal scaler
139 write special vertical cubic upscale version
140 Optimize C code (yv12 / minmax)
141 add support for packed pixel yuv input & output
142 add support for Y8 output
143 optimize bgr24 & bgr32
144 add BGR4 output support
145 write special BGR->BGR scaler
148 #if defined(ARCH_X86) || defined(ARCH_X86_64)
149 static uint64_t attribute_used __attribute__((aligned(8))) bF8= 0xF8F8F8F8F8F8F8F8LL;
150 static uint64_t attribute_used __attribute__((aligned(8))) bFC= 0xFCFCFCFCFCFCFCFCLL;
151 static uint64_t __attribute__((aligned(8))) w10= 0x0010001000100010LL;
152 static uint64_t attribute_used __attribute__((aligned(8))) w02= 0x0002000200020002LL;
153 static uint64_t attribute_used __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
154 static uint64_t attribute_used __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
155 static uint64_t attribute_used __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
156 static uint64_t attribute_used __attribute__((aligned(8))) bm01010101=0x00FF00FF00FF00FFLL;
158 static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
159 static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
160 static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
161 static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
163 static uint64_t __attribute__((aligned(8))) dither4[2]={
164 0x0103010301030103LL,
165 0x0200020002000200LL,};
167 static uint64_t __attribute__((aligned(8))) dither8[2]={
168 0x0602060206020602LL,
169 0x0004000400040004LL,};
171 static uint64_t __attribute__((aligned(8))) b16Mask= 0x001F001F001F001FLL;
172 static uint64_t attribute_used __attribute__((aligned(8))) g16Mask= 0x07E007E007E007E0LL;
173 static uint64_t attribute_used __attribute__((aligned(8))) r16Mask= 0xF800F800F800F800LL;
174 static uint64_t __attribute__((aligned(8))) b15Mask= 0x001F001F001F001FLL;
175 static uint64_t attribute_used __attribute__((aligned(8))) g15Mask= 0x03E003E003E003E0LL;
176 static uint64_t attribute_used __attribute__((aligned(8))) r15Mask= 0x7C007C007C007C00LL;
178 static uint64_t attribute_used __attribute__((aligned(8))) M24A= 0x00FF0000FF0000FFLL;
179 static uint64_t attribute_used __attribute__((aligned(8))) M24B= 0xFF0000FF0000FF00LL;
180 static uint64_t attribute_used __attribute__((aligned(8))) M24C= 0x0000FF0000FF0000LL;
183 static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
184 static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
185 static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
187 static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
188 static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
189 static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
190 #endif /* FAST_BGR2YV12 */
191 static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
192 static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8)))= 0x8080808080808080ULL;
193 static const uint64_t w1111 attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
194 #endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */
196 // clipping helper table for C implementations:
197 static unsigned char clip_table[768];
199 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
201 extern const uint8_t dither_2x2_4[2][8];
202 extern const uint8_t dither_2x2_8[2][8];
203 extern const uint8_t dither_8x8_32[8][8];
204 extern const uint8_t dither_8x8_73[8][8];
205 extern const uint8_t dither_8x8_220[8][8];
207 char *sws_format_name(enum PixelFormat format)
210 case PIX_FMT_YUV420P:
212 case PIX_FMT_YUYV422:
218 case PIX_FMT_YUV422P:
220 case PIX_FMT_YUV444P:
224 case PIX_FMT_YUV410P:
226 case PIX_FMT_YUV411P:
234 case PIX_FMT_MONOWHITE:
236 case PIX_FMT_MONOBLACK:
240 case PIX_FMT_YUVJ420P:
242 case PIX_FMT_YUVJ422P:
244 case PIX_FMT_YUVJ444P:
246 case PIX_FMT_XVMC_MPEG2_MC:
247 return "xvmc_mpeg2_mc";
248 case PIX_FMT_XVMC_MPEG2_IDCT:
249 return "xvmc_mpeg2_idct";
250 case PIX_FMT_UYVY422:
252 case PIX_FMT_UYYVYY411:
254 case PIX_FMT_RGB32_1:
256 case PIX_FMT_BGR32_1:
268 case PIX_FMT_BGR4_BYTE:
274 case PIX_FMT_RGB4_BYTE:
281 return "Unknown format";
285 #if defined(ARCH_X86) || defined(ARCH_X86_64)
286 void in_asm_used_var_warning_killer()
288 volatile int i= bF8+bFC+w10+
289 bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+
290 M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0]+bm01010101;
295 static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
296 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
297 uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
299 //FIXME Optimize (just quickly writen not opti..)
301 for(i=0; i<dstW; i++)
305 for(j=0; j<lumFilterSize; j++)
306 val += lumSrc[j][i] * lumFilter[j];
308 dest[i]= FFMIN(FFMAX(val>>19, 0), 255);
312 for(i=0; i<chrDstW; i++)
317 for(j=0; j<chrFilterSize; j++)
319 u += chrSrc[j][i] * chrFilter[j];
320 v += chrSrc[j][i + 2048] * chrFilter[j];
323 uDest[i]= FFMIN(FFMAX(u>>19, 0), 255);
324 vDest[i]= FFMIN(FFMAX(v>>19, 0), 255);
328 static inline void yuv2nv12XinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
329 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
330 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
332 //FIXME Optimize (just quickly writen not opti..)
334 for(i=0; i<dstW; i++)
338 for(j=0; j<lumFilterSize; j++)
339 val += lumSrc[j][i] * lumFilter[j];
341 dest[i]= FFMIN(FFMAX(val>>19, 0), 255);
347 if(dstFormat == PIX_FMT_NV12)
348 for(i=0; i<chrDstW; i++)
353 for(j=0; j<chrFilterSize; j++)
355 u += chrSrc[j][i] * chrFilter[j];
356 v += chrSrc[j][i + 2048] * chrFilter[j];
359 uDest[2*i]= FFMIN(FFMAX(u>>19, 0), 255);
360 uDest[2*i+1]= FFMIN(FFMAX(v>>19, 0), 255);
363 for(i=0; i<chrDstW; i++)
368 for(j=0; j<chrFilterSize; j++)
370 u += chrSrc[j][i] * chrFilter[j];
371 v += chrSrc[j][i + 2048] * chrFilter[j];
374 uDest[2*i]= FFMIN(FFMAX(v>>19, 0), 255);
375 uDest[2*i+1]= FFMIN(FFMAX(u>>19, 0), 255);
379 #define YSCALE_YUV_2_PACKEDX_C(type) \
380 for(i=0; i<(dstW>>1); i++){\
389 for(j=0; j<lumFilterSize; j++)\
391 Y1 += lumSrc[j][i2] * lumFilter[j];\
392 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
394 for(j=0; j<chrFilterSize; j++)\
396 U += chrSrc[j][i] * chrFilter[j];\
397 V += chrSrc[j][i+2048] * chrFilter[j];\
415 #define YSCALE_YUV_2_RGBX_C(type) \
416 YSCALE_YUV_2_PACKEDX_C(type)\
418 g = c->table_gU[U] + c->table_gV[V];\
421 #define YSCALE_YUV_2_PACKED2_C \
422 for(i=0; i<(dstW>>1); i++){\
424 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19;\
425 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;\
426 int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19;\
427 int V= (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;\
429 #define YSCALE_YUV_2_RGB2_C(type) \
430 YSCALE_YUV_2_PACKED2_C\
433 g = c->table_gU[U] + c->table_gV[V];\
436 #define YSCALE_YUV_2_PACKED1_C \
437 for(i=0; i<(dstW>>1); i++){\
439 int Y1= buf0[i2 ]>>7;\
440 int Y2= buf0[i2+1]>>7;\
441 int U= (uvbuf1[i ])>>7;\
442 int V= (uvbuf1[i+2048])>>7;\
444 #define YSCALE_YUV_2_RGB1_C(type) \
445 YSCALE_YUV_2_PACKED1_C\
448 g = c->table_gU[U] + c->table_gV[V];\
451 #define YSCALE_YUV_2_PACKED1B_C \
452 for(i=0; i<(dstW>>1); i++){\
454 int Y1= buf0[i2 ]>>7;\
455 int Y2= buf0[i2+1]>>7;\
456 int U= (uvbuf0[i ] + uvbuf1[i ])>>8;\
457 int V= (uvbuf0[i+2048] + uvbuf1[i+2048])>>8;\
459 #define YSCALE_YUV_2_RGB1B_C(type) \
460 YSCALE_YUV_2_PACKED1B_C\
463 g = c->table_gU[U] + c->table_gV[V];\
466 #define YSCALE_YUV_2_ANYRGB_C(func, func2)\
467 switch(c->dstFormat)\
472 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
473 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
478 ((uint8_t*)dest)[0]= r[Y1];\
479 ((uint8_t*)dest)[1]= g[Y1];\
480 ((uint8_t*)dest)[2]= b[Y1];\
481 ((uint8_t*)dest)[3]= r[Y2];\
482 ((uint8_t*)dest)[4]= g[Y2];\
483 ((uint8_t*)dest)[5]= b[Y2];\
489 ((uint8_t*)dest)[0]= b[Y1];\
490 ((uint8_t*)dest)[1]= g[Y1];\
491 ((uint8_t*)dest)[2]= r[Y1];\
492 ((uint8_t*)dest)[3]= b[Y2];\
493 ((uint8_t*)dest)[4]= g[Y2];\
494 ((uint8_t*)dest)[5]= r[Y2];\
498 case PIX_FMT_RGB565:\
499 case PIX_FMT_BGR565:\
501 const int dr1= dither_2x2_8[y&1 ][0];\
502 const int dg1= dither_2x2_4[y&1 ][0];\
503 const int db1= dither_2x2_8[(y&1)^1][0];\
504 const int dr2= dither_2x2_8[y&1 ][1];\
505 const int dg2= dither_2x2_4[y&1 ][1];\
506 const int db2= dither_2x2_8[(y&1)^1][1];\
508 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
509 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
513 case PIX_FMT_RGB555:\
514 case PIX_FMT_BGR555:\
516 const int dr1= dither_2x2_8[y&1 ][0];\
517 const int dg1= dither_2x2_8[y&1 ][1];\
518 const int db1= dither_2x2_8[(y&1)^1][0];\
519 const int dr2= dither_2x2_8[y&1 ][1];\
520 const int dg2= dither_2x2_8[y&1 ][0];\
521 const int db2= dither_2x2_8[(y&1)^1][1];\
523 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
524 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
531 const uint8_t * const d64= dither_8x8_73[y&7];\
532 const uint8_t * const d32= dither_8x8_32[y&7];\
534 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
535 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
542 const uint8_t * const d64= dither_8x8_73 [y&7];\
543 const uint8_t * const d128=dither_8x8_220[y&7];\
545 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
546 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
550 case PIX_FMT_RGB4_BYTE:\
551 case PIX_FMT_BGR4_BYTE:\
553 const uint8_t * const d64= dither_8x8_73 [y&7];\
554 const uint8_t * const d128=dither_8x8_220[y&7];\
556 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
557 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
561 case PIX_FMT_MONOBLACK:\
563 const uint8_t * const d128=dither_8x8_220[y&7];\
564 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
565 for(i=0; i<dstW-7; i+=8){\
567 acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];\
568 acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
569 acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
570 acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
571 acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
572 acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
573 acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
574 acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
575 ((uint8_t*)dest)[0]= acc;\
580 ((uint8_t*)dest)-= dstW>>4;\
584 static int top[1024];\
585 static int last_new[1024][1024];\
586 static int last_in3[1024][1024];\
587 static int drift[1024][1024];\
591 const uint8_t * const d128=dither_8x8_220[y&7];\
596 for(i=dstW>>1; i<dstW; i++){\
597 int in= ((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19);\
598 int in2 = (76309 * (in - 16) + 32768) >> 16;\
599 int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\
600 int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\
601 + (last_new[y][i] - in3)*f/256;\
602 int new= old> 128 ? 255 : 0;\
604 error_new+= ABS(last_new[y][i] - new);\
605 error_in3+= ABS(last_in3[y][i] - in3);\
606 f= error_new - error_in3*4;\
611 left= top[i]= old - new;\
612 last_new[y][i]= new;\
613 last_in3[y][i]= in3;\
615 acc+= acc + (new&1);\
617 ((uint8_t*)dest)[0]= acc;\
625 case PIX_FMT_YUYV422:\
627 ((uint8_t*)dest)[2*i2+0]= Y1;\
628 ((uint8_t*)dest)[2*i2+1]= U;\
629 ((uint8_t*)dest)[2*i2+2]= Y2;\
630 ((uint8_t*)dest)[2*i2+3]= V;\
633 case PIX_FMT_UYVY422:\
635 ((uint8_t*)dest)[2*i2+0]= U;\
636 ((uint8_t*)dest)[2*i2+1]= Y1;\
637 ((uint8_t*)dest)[2*i2+2]= V;\
638 ((uint8_t*)dest)[2*i2+3]= Y2;\
644 static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
645 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
646 uint8_t *dest, int dstW, int y)
653 YSCALE_YUV_2_RGBX_C(uint32_t)
654 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
655 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
659 YSCALE_YUV_2_RGBX_C(uint8_t)
660 ((uint8_t*)dest)[0]= r[Y1];
661 ((uint8_t*)dest)[1]= g[Y1];
662 ((uint8_t*)dest)[2]= b[Y1];
663 ((uint8_t*)dest)[3]= r[Y2];
664 ((uint8_t*)dest)[4]= g[Y2];
665 ((uint8_t*)dest)[5]= b[Y2];
670 YSCALE_YUV_2_RGBX_C(uint8_t)
671 ((uint8_t*)dest)[0]= b[Y1];
672 ((uint8_t*)dest)[1]= g[Y1];
673 ((uint8_t*)dest)[2]= r[Y1];
674 ((uint8_t*)dest)[3]= b[Y2];
675 ((uint8_t*)dest)[4]= g[Y2];
676 ((uint8_t*)dest)[5]= r[Y2];
683 const int dr1= dither_2x2_8[y&1 ][0];
684 const int dg1= dither_2x2_4[y&1 ][0];
685 const int db1= dither_2x2_8[(y&1)^1][0];
686 const int dr2= dither_2x2_8[y&1 ][1];
687 const int dg2= dither_2x2_4[y&1 ][1];
688 const int db2= dither_2x2_8[(y&1)^1][1];
689 YSCALE_YUV_2_RGBX_C(uint16_t)
690 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
691 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
698 const int dr1= dither_2x2_8[y&1 ][0];
699 const int dg1= dither_2x2_8[y&1 ][1];
700 const int db1= dither_2x2_8[(y&1)^1][0];
701 const int dr2= dither_2x2_8[y&1 ][1];
702 const int dg2= dither_2x2_8[y&1 ][0];
703 const int db2= dither_2x2_8[(y&1)^1][1];
704 YSCALE_YUV_2_RGBX_C(uint16_t)
705 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
706 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
713 const uint8_t * const d64= dither_8x8_73[y&7];
714 const uint8_t * const d32= dither_8x8_32[y&7];
715 YSCALE_YUV_2_RGBX_C(uint8_t)
716 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
717 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
724 const uint8_t * const d64= dither_8x8_73 [y&7];
725 const uint8_t * const d128=dither_8x8_220[y&7];
726 YSCALE_YUV_2_RGBX_C(uint8_t)
727 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]
728 +((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);
732 case PIX_FMT_RGB4_BYTE:
733 case PIX_FMT_BGR4_BYTE:
735 const uint8_t * const d64= dither_8x8_73 [y&7];
736 const uint8_t * const d128=dither_8x8_220[y&7];
737 YSCALE_YUV_2_RGBX_C(uint8_t)
738 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
739 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
743 case PIX_FMT_MONOBLACK:
745 const uint8_t * const d128=dither_8x8_220[y&7];
746 uint8_t *g= c->table_gU[128] + c->table_gV[128];
748 for(i=0; i<dstW-1; i+=2){
753 for(j=0; j<lumFilterSize; j++)
755 Y1 += lumSrc[j][i] * lumFilter[j];
756 Y2 += lumSrc[j][i+1] * lumFilter[j];
767 acc+= acc + g[Y1+d128[(i+0)&7]];
768 acc+= acc + g[Y2+d128[(i+1)&7]];
770 ((uint8_t*)dest)[0]= acc;
776 case PIX_FMT_YUYV422:
777 YSCALE_YUV_2_PACKEDX_C(void)
778 ((uint8_t*)dest)[2*i2+0]= Y1;
779 ((uint8_t*)dest)[2*i2+1]= U;
780 ((uint8_t*)dest)[2*i2+2]= Y2;
781 ((uint8_t*)dest)[2*i2+3]= V;
784 case PIX_FMT_UYVY422:
785 YSCALE_YUV_2_PACKEDX_C(void)
786 ((uint8_t*)dest)[2*i2+0]= U;
787 ((uint8_t*)dest)[2*i2+1]= Y1;
788 ((uint8_t*)dest)[2*i2+2]= V;
789 ((uint8_t*)dest)[2*i2+3]= Y2;
796 //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
798 #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT)
803 #if defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)
804 #define COMPILE_ALTIVEC
805 #endif //HAVE_ALTIVEC
806 #endif //ARCH_POWERPC
808 #if defined(ARCH_X86) || defined(ARCH_X86_64)
810 #if (defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
814 #if defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)
818 #if (defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
819 #define COMPILE_3DNOW
821 #endif //ARCH_X86 || ARCH_X86_64
832 #define RENAME(a) a ## _C
833 #include "swscale_template.c"
837 #ifdef COMPILE_ALTIVEC
840 #define RENAME(a) a ## _altivec
841 #include "swscale_template.c"
843 #endif //ARCH_POWERPC
845 #if defined(ARCH_X86) || defined(ARCH_X86_64)
854 #define RENAME(a) a ## _X86
855 #include "swscale_template.c"
863 #define RENAME(a) a ## _MMX
864 #include "swscale_template.c"
873 #define RENAME(a) a ## _MMX2
874 #include "swscale_template.c"
883 #define RENAME(a) a ## _3DNow
884 #include "swscale_template.c"
887 #endif //ARCH_X86 || ARCH_X86_64
889 // minor note: the HAVE_xyz is messed up after that line so don't use it
891 static double getSplineCoeff(double a, double b, double c, double d, double dist)
893 // printf("%f %f %f %f %f\n", a,b,c,d,dist);
894 if(dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;
895 else return getSplineCoeff( 0.0,
902 static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
903 int srcW, int dstW, int filterAlign, int one, int flags,
904 SwsVector *srcFilter, SwsVector *dstFilter, double param[2])
911 double *filter2=NULL;
912 #if defined(ARCH_X86) || defined(ARCH_X86_64)
913 if(flags & SWS_CPU_CAPS_MMX)
914 asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
917 // Note the +1 is for the MMXscaler which reads over the end
918 *filterPos = av_malloc((dstW+1)*sizeof(int16_t));
920 if(ABS(xInc - 0x10000) <10) // unscaled
924 filter= av_malloc(dstW*sizeof(double)*filterSize);
925 for(i=0; i<dstW*filterSize; i++) filter[i]=0;
927 for(i=0; i<dstW; i++)
929 filter[i*filterSize]=1;
934 else if(flags&SWS_POINT) // lame looking point sampling mode
939 filter= av_malloc(dstW*sizeof(double)*filterSize);
941 xDstInSrc= xInc/2 - 0x8000;
942 for(i=0; i<dstW; i++)
944 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
951 else if((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
955 if (flags&SWS_BICUBIC) filterSize= 4;
956 else if(flags&SWS_X ) filterSize= 4;
957 else filterSize= 2; // SWS_BILINEAR / SWS_AREA
958 filter= av_malloc(dstW*sizeof(double)*filterSize);
960 xDstInSrc= xInc/2 - 0x8000;
961 for(i=0; i<dstW; i++)
963 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
967 //Bilinear upscale / linear interpolate / Area averaging
968 for(j=0; j<filterSize; j++)
970 double d= ABS((xx<<16) - xDstInSrc)/(double)(1<<16);
971 double coeff= 1.0 - d;
973 filter[i*filterSize + j]= coeff;
982 double sizeFactor, filterSizeInSrc;
983 const double xInc1= (double)xInc / (double)(1<<16);
985 if (flags&SWS_BICUBIC) sizeFactor= 4.0;
986 else if(flags&SWS_X) sizeFactor= 8.0;
987 else if(flags&SWS_AREA) sizeFactor= 1.0; //downscale only, for upscale it is bilinear
988 else if(flags&SWS_GAUSS) sizeFactor= 8.0; // infinite ;)
989 else if(flags&SWS_LANCZOS) sizeFactor= param[0] != SWS_PARAM_DEFAULT ? 2.0*param[0] : 6.0;
990 else if(flags&SWS_SINC) sizeFactor= 20.0; // infinite ;)
991 else if(flags&SWS_SPLINE) sizeFactor= 20.0; // infinite ;)
992 else if(flags&SWS_BILINEAR) sizeFactor= 2.0;
994 sizeFactor= 0.0; //GCC warning killer
998 if(xInc1 <= 1.0) filterSizeInSrc= sizeFactor; // upscale
999 else filterSizeInSrc= sizeFactor*srcW / (double)dstW;
1001 filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible
1002 if(filterSize > srcW-2) filterSize=srcW-2;
1004 filter= av_malloc(dstW*sizeof(double)*filterSize);
1006 xDstInSrc= xInc1 / 2.0 - 0.5;
1007 for(i=0; i<dstW; i++)
1009 int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);
1011 (*filterPos)[i]= xx;
1012 for(j=0; j<filterSize; j++)
1014 double d= ABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;
1016 if(flags & SWS_BICUBIC)
1018 double B= param[0] != SWS_PARAM_DEFAULT ? param[0] : 0.0;
1019 double C= param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6;
1022 coeff = (12-9*B-6*C)*d*d*d + (-18+12*B+6*C)*d*d + 6-2*B;
1024 coeff = (-B-6*C)*d*d*d + (6*B+30*C)*d*d + (-12*B-48*C)*d +8*B+24*C;
1028 /* else if(flags & SWS_X)
1030 double p= param ? param*0.01 : 0.3;
1031 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1032 coeff*= pow(2.0, - p*d*d);
1034 else if(flags & SWS_X)
1036 double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
1042 if(coeff<0.0) coeff= -pow(-coeff, A);
1043 else coeff= pow( coeff, A);
1044 coeff= coeff*0.5 + 0.5;
1046 else if(flags & SWS_AREA)
1048 double srcPixelSize= 1.0/xInc1;
1049 if(d + srcPixelSize/2 < 0.5) coeff= 1.0;
1050 else if(d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
1053 else if(flags & SWS_GAUSS)
1055 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1056 coeff = pow(2.0, - p*d*d);
1058 else if(flags & SWS_SINC)
1060 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1062 else if(flags & SWS_LANCZOS)
1064 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1065 coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;
1068 else if(flags & SWS_BILINEAR)
1071 if(coeff<0) coeff=0;
1073 else if(flags & SWS_SPLINE)
1075 double p=-2.196152422706632;
1076 coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);
1079 coeff= 0.0; //GCC warning killer
1083 filter[i*filterSize + j]= coeff;
1090 /* apply src & dst Filter to filter -> filter2
1093 ASSERT(filterSize>0)
1094 filter2Size= filterSize;
1095 if(srcFilter) filter2Size+= srcFilter->length - 1;
1096 if(dstFilter) filter2Size+= dstFilter->length - 1;
1097 ASSERT(filter2Size>0)
1098 filter2= av_malloc(filter2Size*dstW*sizeof(double));
1100 for(i=0; i<dstW; i++)
1103 SwsVector scaleFilter;
1106 scaleFilter.coeff= filter + i*filterSize;
1107 scaleFilter.length= filterSize;
1109 if(srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);
1110 else outVec= &scaleFilter;
1112 ASSERT(outVec->length == filter2Size)
1115 for(j=0; j<outVec->length; j++)
1117 filter2[i*filter2Size + j]= outVec->coeff[j];
1120 (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
1122 if(outVec != &scaleFilter) sws_freeVec(outVec);
1124 av_free(filter); filter=NULL;
1126 /* try to reduce the filter-size (step1 find size and shift left) */
1127 // Assume its near normalized (*0.5 or *2.0 is ok but * 0.001 is not)
1129 for(i=dstW-1; i>=0; i--)
1131 int min= filter2Size;
1135 /* get rid off near zero elements on the left by shifting left */
1136 for(j=0; j<filter2Size; j++)
1139 cutOff += ABS(filter2[i*filter2Size]);
1141 if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1143 /* preserve Monotonicity because the core can't handle the filter otherwise */
1144 if(i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
1146 // Move filter coeffs left
1147 for(k=1; k<filter2Size; k++)
1148 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
1149 filter2[i*filter2Size + k - 1]= 0.0;
1154 /* count near zeros on the right */
1155 for(j=filter2Size-1; j>0; j--)
1157 cutOff += ABS(filter2[i*filter2Size + j]);
1159 if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1163 if(min>minFilterSize) minFilterSize= min;
1166 if (flags & SWS_CPU_CAPS_ALTIVEC) {
1167 // we can handle the special case 4,
1168 // so we don't want to go to the full 8
1169 if (minFilterSize < 5)
1172 // we really don't want to waste our time
1173 // doing useless computation, so fall-back on
1174 // the scalar C code for very small filter.
1175 // vectorizing is worth it only if you have
1176 // decent-sized vector.
1177 if (minFilterSize < 3)
1181 if (flags & SWS_CPU_CAPS_MMX) {
1182 // special case for unscaled vertical filtering
1183 if(minFilterSize == 1 && filterAlign == 2)
1187 ASSERT(minFilterSize > 0)
1188 filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
1189 ASSERT(filterSize > 0)
1190 filter= av_malloc(filterSize*dstW*sizeof(double));
1191 if(filterSize >= MAX_FILTER_SIZE)
1193 *outFilterSize= filterSize;
1195 if(flags&SWS_PRINT_INFO)
1196 MSG_V("SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
1197 /* try to reduce the filter-size (step2 reduce it) */
1198 for(i=0; i<dstW; i++)
1202 for(j=0; j<filterSize; j++)
1204 if(j>=filter2Size) filter[i*filterSize + j]= 0.0;
1205 else filter[i*filterSize + j]= filter2[i*filter2Size + j];
1208 av_free(filter2); filter2=NULL;
1211 //FIXME try to align filterpos if possible
1214 for(i=0; i<dstW; i++)
1217 if((*filterPos)[i] < 0)
1219 // Move filter coeffs left to compensate for filterPos
1220 for(j=1; j<filterSize; j++)
1222 int left= FFMAX(j + (*filterPos)[i], 0);
1223 filter[i*filterSize + left] += filter[i*filterSize + j];
1224 filter[i*filterSize + j]=0;
1229 if((*filterPos)[i] + filterSize > srcW)
1231 int shift= (*filterPos)[i] + filterSize - srcW;
1232 // Move filter coeffs right to compensate for filterPos
1233 for(j=filterSize-2; j>=0; j--)
1235 int right= FFMIN(j + shift, filterSize-1);
1236 filter[i*filterSize +right] += filter[i*filterSize +j];
1237 filter[i*filterSize +j]=0;
1239 (*filterPos)[i]= srcW - filterSize;
1243 // Note the +1 is for the MMXscaler which reads over the end
1244 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
1245 *outFilter= av_malloc(*outFilterSize*(dstW+1)*sizeof(int16_t));
1246 memset(*outFilter, 0, *outFilterSize*(dstW+1)*sizeof(int16_t));
1248 /* Normalize & Store in outFilter */
1249 for(i=0; i<dstW; i++)
1256 for(j=0; j<filterSize; j++)
1258 sum+= filter[i*filterSize + j];
1261 for(j=0; j<*outFilterSize; j++)
1263 double v= filter[i*filterSize + j]*scale + error;
1264 int intV= floor(v + 0.5);
1265 (*outFilter)[i*(*outFilterSize) + j]= intV;
1270 (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
1271 for(i=0; i<*outFilterSize; i++)
1273 int j= dstW*(*outFilterSize);
1274 (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
1282 static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
1285 long imm8OfPShufW1A;
1286 long imm8OfPShufW2A;
1287 long fragmentLengthA;
1289 long imm8OfPShufW1B;
1290 long imm8OfPShufW2B;
1291 long fragmentLengthB;
1296 // create an optimized horizontal scaling routine
1304 "movq (%%"REG_d", %%"REG_a"), %%mm3\n\t"
1305 "movd (%%"REG_c", %%"REG_S"), %%mm0\n\t"
1306 "movd 1(%%"REG_c", %%"REG_S"), %%mm1\n\t"
1307 "punpcklbw %%mm7, %%mm1 \n\t"
1308 "punpcklbw %%mm7, %%mm0 \n\t"
1309 "pshufw $0xFF, %%mm1, %%mm1 \n\t"
1311 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1313 "psubw %%mm1, %%mm0 \n\t"
1314 "movl 8(%%"REG_b", %%"REG_a"), %%esi\n\t"
1315 "pmullw %%mm3, %%mm0 \n\t"
1316 "psllw $7, %%mm1 \n\t"
1317 "paddw %%mm1, %%mm0 \n\t"
1319 "movq %%mm0, (%%"REG_D", %%"REG_a")\n\t"
1321 "add $8, %%"REG_a" \n\t"
1336 :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
1337 "=r" (fragmentLengthA)
1344 "movq (%%"REG_d", %%"REG_a"), %%mm3\n\t"
1345 "movd (%%"REG_c", %%"REG_S"), %%mm0\n\t"
1346 "punpcklbw %%mm7, %%mm0 \n\t"
1347 "pshufw $0xFF, %%mm0, %%mm1 \n\t"
1349 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1351 "psubw %%mm1, %%mm0 \n\t"
1352 "movl 8(%%"REG_b", %%"REG_a"), %%esi\n\t"
1353 "pmullw %%mm3, %%mm0 \n\t"
1354 "psllw $7, %%mm1 \n\t"
1355 "paddw %%mm1, %%mm0 \n\t"
1357 "movq %%mm0, (%%"REG_D", %%"REG_a")\n\t"
1359 "add $8, %%"REG_a" \n\t"
1374 :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
1375 "=r" (fragmentLengthB)
1378 xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1381 for(i=0; i<dstW/numSplits; i++)
1388 int b=((xpos+xInc)>>16) - xx;
1389 int c=((xpos+xInc*2)>>16) - xx;
1390 int d=((xpos+xInc*3)>>16) - xx;
1392 filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
1393 filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
1394 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
1395 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
1400 int maxShift= 3-(d+1);
1403 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
1405 funnyCode[fragmentPos + imm8OfPShufW1B]=
1406 (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
1407 funnyCode[fragmentPos + imm8OfPShufW2B]=
1408 a | (b<<2) | (c<<4) | (d<<6);
1410 if(i+3>=dstW) shift=maxShift; //avoid overread
1411 else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
1413 if(shift && i>=shift)
1415 funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
1416 funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
1417 filterPos[i/2]-=shift;
1420 fragmentPos+= fragmentLengthB;
1427 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
1429 funnyCode[fragmentPos + imm8OfPShufW1A]=
1430 funnyCode[fragmentPos + imm8OfPShufW2A]=
1431 a | (b<<2) | (c<<4) | (d<<6);
1433 if(i+4>=dstW) shift=maxShift; //avoid overread
1434 else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
1436 if(shift && i>=shift)
1438 funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
1439 funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
1440 filterPos[i/2]-=shift;
1443 fragmentPos+= fragmentLengthA;
1446 funnyCode[fragmentPos]= RET;
1450 filterPos[i/2]= xpos>>16; // needed to jump to the next part
1452 #endif /* COMPILE_MMX2 */
1454 static void globalInit(void){
1455 // generating tables:
1457 for(i=0; i<768; i++){
1458 int c= FFMIN(FFMAX(i-256, 0), 255);
1463 static SwsFunc getSwsFunc(int flags){
1465 #ifdef RUNTIME_CPUDETECT
1466 #if defined(ARCH_X86) || defined(ARCH_X86_64)
1467 // ordered per speed fasterst first
1468 if(flags & SWS_CPU_CAPS_MMX2)
1469 return swScale_MMX2;
1470 else if(flags & SWS_CPU_CAPS_3DNOW)
1471 return swScale_3DNow;
1472 else if(flags & SWS_CPU_CAPS_MMX)
1479 if(flags & SWS_CPU_CAPS_ALTIVEC)
1480 return swScale_altivec;
1485 #endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */
1486 #else //RUNTIME_CPUDETECT
1488 return swScale_MMX2;
1489 #elif defined (HAVE_3DNOW)
1490 return swScale_3DNow;
1491 #elif defined (HAVE_MMX)
1493 #elif defined (HAVE_ALTIVEC)
1494 return swScale_altivec;
1498 #endif //!RUNTIME_CPUDETECT
1501 static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1502 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1503 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1505 if(dstStride[0]==srcStride[0] && srcStride[0] > 0)
1506 memcpy(dst, src[0], srcSliceH*dstStride[0]);
1510 uint8_t *srcPtr= src[0];
1511 uint8_t *dstPtr= dst;
1512 for(i=0; i<srcSliceH; i++)
1514 memcpy(dstPtr, srcPtr, c->srcW);
1515 srcPtr+= srcStride[0];
1516 dstPtr+= dstStride[0];
1519 dst = dstParam[1] + dstStride[1]*srcSliceY/2;
1520 if (c->dstFormat == PIX_FMT_NV12)
1521 interleaveBytes( src[1],src[2],dst,c->srcW/2,srcSliceH/2,srcStride[1],srcStride[2],dstStride[0] );
1523 interleaveBytes( src[2],src[1],dst,c->srcW/2,srcSliceH/2,srcStride[2],srcStride[1],dstStride[0] );
1528 static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1529 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1530 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1532 yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
1537 static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1538 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1539 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1541 yv12touyvy( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
1546 /* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */
1547 static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1548 int srcSliceH, uint8_t* dst[], int dstStride[]){
1549 const int srcFormat= c->srcFormat;
1550 const int dstFormat= c->dstFormat;
1551 const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;
1552 const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;
1553 const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1554 const int dstId= fmt_depth(dstFormat) >> 2;
1555 void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
1558 if( (isBGR(srcFormat) && isBGR(dstFormat))
1559 || (isRGB(srcFormat) && isRGB(dstFormat))){
1560 switch(srcId | (dstId<<4)){
1561 case 0x34: conv= rgb16to15; break;
1562 case 0x36: conv= rgb24to15; break;
1563 case 0x38: conv= rgb32to15; break;
1564 case 0x43: conv= rgb15to16; break;
1565 case 0x46: conv= rgb24to16; break;
1566 case 0x48: conv= rgb32to16; break;
1567 case 0x63: conv= rgb15to24; break;
1568 case 0x64: conv= rgb16to24; break;
1569 case 0x68: conv= rgb32to24; break;
1570 case 0x83: conv= rgb15to32; break;
1571 case 0x84: conv= rgb16to32; break;
1572 case 0x86: conv= rgb24to32; break;
1573 default: MSG_ERR("swScaler: internal error %s -> %s converter\n",
1574 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1576 }else if( (isBGR(srcFormat) && isRGB(dstFormat))
1577 || (isRGB(srcFormat) && isBGR(dstFormat))){
1578 switch(srcId | (dstId<<4)){
1579 case 0x33: conv= rgb15tobgr15; break;
1580 case 0x34: conv= rgb16tobgr15; break;
1581 case 0x36: conv= rgb24tobgr15; break;
1582 case 0x38: conv= rgb32tobgr15; break;
1583 case 0x43: conv= rgb15tobgr16; break;
1584 case 0x44: conv= rgb16tobgr16; break;
1585 case 0x46: conv= rgb24tobgr16; break;
1586 case 0x48: conv= rgb32tobgr16; break;
1587 case 0x63: conv= rgb15tobgr24; break;
1588 case 0x64: conv= rgb16tobgr24; break;
1589 case 0x66: conv= rgb24tobgr24; break;
1590 case 0x68: conv= rgb32tobgr24; break;
1591 case 0x83: conv= rgb15tobgr32; break;
1592 case 0x84: conv= rgb16tobgr32; break;
1593 case 0x86: conv= rgb24tobgr32; break;
1594 case 0x88: conv= rgb32tobgr32; break;
1595 default: MSG_ERR("swScaler: internal error %s -> %s converter\n",
1596 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1599 MSG_ERR("swScaler: internal error %s -> %s converter\n",
1600 sws_format_name(srcFormat), sws_format_name(dstFormat));
1603 if(dstStride[0]*srcBpp == srcStride[0]*dstBpp)
1604 conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1608 uint8_t *srcPtr= src[0];
1609 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1611 for(i=0; i<srcSliceH; i++)
1613 conv(srcPtr, dstPtr, c->srcW*srcBpp);
1614 srcPtr+= srcStride[0];
1615 dstPtr+= dstStride[0];
1621 static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1622 int srcSliceH, uint8_t* dst[], int dstStride[]){
1626 dst[0]+ srcSliceY *dstStride[0],
1627 dst[1]+(srcSliceY>>1)*dstStride[1],
1628 dst[2]+(srcSliceY>>1)*dstStride[2],
1630 dstStride[0], dstStride[1], srcStride[0]);
1634 static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1635 int srcSliceH, uint8_t* dst[], int dstStride[]){
1639 if(srcStride[0]==dstStride[0] && srcStride[0] > 0)
1640 memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1642 uint8_t *srcPtr= src[0];
1643 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1645 for(i=0; i<srcSliceH; i++)
1647 memcpy(dstPtr, srcPtr, c->srcW);
1648 srcPtr+= srcStride[0];
1649 dstPtr+= dstStride[0];
1653 if(c->dstFormat==PIX_FMT_YUV420P){
1654 planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
1655 planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
1657 planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
1658 planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
1663 /* unscaled copy like stuff (assumes nearly identical formats) */
1664 static int simpleCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1665 int srcSliceH, uint8_t* dst[], int dstStride[]){
1667 if(isPacked(c->srcFormat))
1669 if(dstStride[0]==srcStride[0] && srcStride[0] > 0)
1670 memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1674 uint8_t *srcPtr= src[0];
1675 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1678 /* universal length finder */
1679 while(length+c->srcW <= ABS(dstStride[0])
1680 && length+c->srcW <= ABS(srcStride[0])) length+= c->srcW;
1683 for(i=0; i<srcSliceH; i++)
1685 memcpy(dstPtr, srcPtr, length);
1686 srcPtr+= srcStride[0];
1687 dstPtr+= dstStride[0];
1692 { /* Planar YUV or gray */
1694 for(plane=0; plane<3; plane++)
1696 int length= plane==0 ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
1697 int y= plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1698 int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1700 if((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
1702 if(!isGray(c->dstFormat))
1703 memset(dst[plane], 128, dstStride[plane]*height);
1707 if(dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
1708 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1712 uint8_t *srcPtr= src[plane];
1713 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1714 for(i=0; i<height; i++)
1716 memcpy(dstPtr, srcPtr, length);
1717 srcPtr+= srcStride[plane];
1718 dstPtr+= dstStride[plane];
1727 static void getSubSampleFactors(int *h, int *v, int format){
1729 case PIX_FMT_UYVY422:
1730 case PIX_FMT_YUYV422:
1734 case PIX_FMT_YUV420P:
1735 case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented
1741 case PIX_FMT_YUV410P:
1745 case PIX_FMT_YUV444P:
1749 case PIX_FMT_YUV422P:
1753 case PIX_FMT_YUV411P:
1764 static uint16_t roundToInt16(int64_t f){
1765 int r= (f + (1<<15))>>16;
1766 if(r<-0x7FFF) return 0x8000;
1767 else if(r> 0x7FFF) return 0x7FFF;
1772 * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]
1773 * @param fullRange if 1 then the luma range is 0..255 if 0 its 16..235
1774 * @return -1 if not supported
1776 int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){
1777 int64_t crv = inv_table[0];
1778 int64_t cbu = inv_table[1];
1779 int64_t cgu = -inv_table[2];
1780 int64_t cgv = -inv_table[3];
1784 if(isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1785 memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
1786 memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
1788 c->brightness= brightness;
1789 c->contrast = contrast;
1790 c->saturation= saturation;
1791 c->srcRange = srcRange;
1792 c->dstRange = dstRange;
1794 c->uOffset= 0x0400040004000400LL;
1795 c->vOffset= 0x0400040004000400LL;
1802 cy = (cy *contrast )>>16;
1803 crv= (crv*contrast * saturation)>>32;
1804 cbu= (cbu*contrast * saturation)>>32;
1805 cgu= (cgu*contrast * saturation)>>32;
1806 cgv= (cgv*contrast * saturation)>>32;
1808 oy -= 256*brightness;
1810 c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
1811 c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
1812 c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
1813 c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
1814 c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
1815 c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
1817 yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
1820 #ifdef COMPILE_ALTIVEC
1821 if (c->flags & SWS_CPU_CAPS_ALTIVEC)
1822 yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);
1828 * @return -1 if not supported
1830 int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){
1831 if(isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1833 *inv_table = c->srcColorspaceTable;
1834 *table = c->dstColorspaceTable;
1835 *srcRange = c->srcRange;
1836 *dstRange = c->dstRange;
1837 *brightness= c->brightness;
1838 *contrast = c->contrast;
1839 *saturation= c->saturation;
1844 SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
1845 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){
1849 int usesVFilter, usesHFilter;
1850 int unscaled, needsDither;
1851 SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
1852 #if defined(ARCH_X86) || defined(ARCH_X86_64)
1853 if(flags & SWS_CPU_CAPS_MMX)
1854 asm volatile("emms\n\t"::: "memory");
1857 #ifndef RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off
1858 flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC);
1860 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
1861 #elif defined (HAVE_3DNOW)
1862 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
1863 #elif defined (HAVE_MMX)
1864 flags |= SWS_CPU_CAPS_MMX;
1865 #elif defined (HAVE_ALTIVEC)
1866 flags |= SWS_CPU_CAPS_ALTIVEC;
1868 #endif /* RUNTIME_CPUDETECT */
1869 if(clip_table[512] != 255) globalInit();
1870 if(rgb15to16 == NULL) sws_rgb2rgb_init(flags);
1872 unscaled = (srcW == dstW && srcH == dstH);
1873 needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
1874 && (fmt_depth(dstFormat))<24
1875 && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
1877 if(!isSupportedIn(srcFormat))
1879 MSG_ERR("swScaler: %s is not supported as input format\n", sws_format_name(srcFormat));
1882 if(!isSupportedOut(dstFormat))
1884 MSG_ERR("swScaler: %s is not supported as output format\n", sws_format_name(dstFormat));
1889 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
1891 MSG_ERR("swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
1892 srcW, srcH, dstW, dstH);
1896 if(!dstFilter) dstFilter= &dummyFilter;
1897 if(!srcFilter) srcFilter= &dummyFilter;
1899 c= av_malloc(sizeof(SwsContext));
1900 memset(c, 0, sizeof(SwsContext));
1906 c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
1907 c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
1909 c->dstFormat= dstFormat;
1910 c->srcFormat= srcFormat;
1911 c->vRounder= 4* 0x0001000100010001ULL;
1913 usesHFilter= usesVFilter= 0;
1914 if(dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesVFilter=1;
1915 if(dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesHFilter=1;
1916 if(dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesVFilter=1;
1917 if(dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesHFilter=1;
1918 if(srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesVFilter=1;
1919 if(srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesHFilter=1;
1920 if(srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesVFilter=1;
1921 if(srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesHFilter=1;
1923 getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
1924 getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
1926 // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
1927 if((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
1929 // drop some chroma lines if the user wants it
1930 c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
1931 c->chrSrcVSubSample+= c->vChrDrop;
1933 // drop every 2. pixel for chroma calculation unless user wants full chroma
1934 if((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP))
1935 c->chrSrcHSubSample=1;
1938 c->param[0] = param[0];
1939 c->param[1] = param[1];
1942 c->param[1] = SWS_PARAM_DEFAULT;
1945 c->chrIntHSubSample= c->chrDstHSubSample;
1946 c->chrIntVSubSample= c->chrSrcVSubSample;
1948 // note the -((-x)>>y) is so that we allways round toward +inf
1949 c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
1950 c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
1951 c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
1952 c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
1954 sws_setColorspaceDetails(c, Inverse_Table_6_9[SWS_CS_DEFAULT], 0, Inverse_Table_6_9[SWS_CS_DEFAULT] /* FIXME*/, 0, 0, 1<<16, 1<<16);
1956 /* unscaled special Cases */
1957 if(unscaled && !usesHFilter && !usesVFilter)
1960 if(srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))
1962 c->swScale= PlanarToNV12Wrapper;
1965 if((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat)))
1967 c->swScale= yuv2rgb_get_func_ptr(c);
1970 if( srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P )
1972 c->swScale= yvu9toyv12Wrapper;
1976 if(srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P)
1977 c->swScale= bgr24toyv12Wrapper;
1979 /* rgb/bgr -> rgb/bgr (no dither needed forms) */
1980 if( (isBGR(srcFormat) || isRGB(srcFormat))
1981 && (isBGR(dstFormat) || isRGB(dstFormat))
1983 c->swScale= rgb2rgbWrapper;
1985 /* LQ converters if -sws 0 or -sws 4*/
1986 if(c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
1987 /* rgb/bgr -> rgb/bgr (dither needed forms) */
1988 if( (isBGR(srcFormat) || isRGB(srcFormat))
1989 && (isBGR(dstFormat) || isRGB(dstFormat))
1991 c->swScale= rgb2rgbWrapper;
1994 if(srcFormat == PIX_FMT_YUV420P &&
1995 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422))
1997 if (dstFormat == PIX_FMT_YUYV422)
1998 c->swScale= PlanarToYuy2Wrapper;
2000 c->swScale= PlanarToUyvyWrapper;
2004 #ifdef COMPILE_ALTIVEC
2005 if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
2006 ((srcFormat == PIX_FMT_YUV420P &&
2007 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422)))) {
2008 // unscaled YV12 -> packed YUV, we want speed
2009 if (dstFormat == PIX_FMT_YUYV422)
2010 c->swScale= yv12toyuy2_unscaled_altivec;
2012 c->swScale= yv12touyvy_unscaled_altivec;
2017 if( srcFormat == dstFormat
2018 || (isPlanarYUV(srcFormat) && isGray(dstFormat))
2019 || (isPlanarYUV(dstFormat) && isGray(srcFormat))
2022 c->swScale= simpleCopy;
2026 if(flags&SWS_PRINT_INFO)
2027 MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n",
2028 sws_format_name(srcFormat), sws_format_name(dstFormat));
2033 if(flags & SWS_CPU_CAPS_MMX2)
2035 c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
2036 if(!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
2038 if(flags&SWS_PRINT_INFO)
2039 MSG_INFO("SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");
2041 if(usesHFilter) c->canMMX2BeUsed=0;
2046 c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
2047 c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
2049 // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
2050 // but only for the FAST_BILINEAR mode otherwise do correct scaling
2051 // n-2 is the last chrominance sample available
2052 // this is not perfect, but noone shuld notice the difference, the more correct variant
2053 // would be like the vertical one, but that would require some special code for the
2054 // first and last pixel
2055 if(flags&SWS_FAST_BILINEAR)
2057 if(c->canMMX2BeUsed)
2062 //we don't use the x86asm scaler if mmx is available
2063 else if(flags & SWS_CPU_CAPS_MMX)
2065 c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
2066 c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
2070 /* precalculate horizontal scaler filter coefficients */
2072 const int filterAlign=
2073 (flags & SWS_CPU_CAPS_MMX) ? 4 :
2074 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2077 initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
2078 srcW , dstW, filterAlign, 1<<14,
2079 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2080 srcFilter->lumH, dstFilter->lumH, c->param);
2081 initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
2082 c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
2083 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2084 srcFilter->chrH, dstFilter->chrH, c->param);
2086 #define MAX_FUNNY_CODE_SIZE 10000
2087 #if defined(COMPILE_MMX2)
2088 // can't downscale !!!
2089 if(c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
2091 #ifdef MAP_ANONYMOUS
2092 c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2093 c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2095 c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2096 c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2099 c->lumMmx2Filter = av_malloc((dstW /8+8)*sizeof(int16_t));
2100 c->chrMmx2Filter = av_malloc((c->chrDstW /4+8)*sizeof(int16_t));
2101 c->lumMmx2FilterPos= av_malloc((dstW /2/8+8)*sizeof(int32_t));
2102 c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));
2104 initMMX2HScaler( dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
2105 initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
2107 #endif /* defined(COMPILE_MMX2) */
2108 } // Init Horizontal stuff
2112 /* precalculate vertical scaler filter coefficients */
2114 const int filterAlign=
2115 (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :
2116 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2119 initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
2120 srcH , dstH, filterAlign, (1<<12)-4,
2121 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2122 srcFilter->lumV, dstFilter->lumV, c->param);
2123 initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
2124 c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,
2125 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2126 srcFilter->chrV, dstFilter->chrV, c->param);
2129 c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
2130 c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);
2132 for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
2134 short *p = (short *)&c->vYCoeffsBank[i];
2136 p[j] = c->vLumFilter[i];
2139 for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {
2141 short *p = (short *)&c->vCCoeffsBank[i];
2143 p[j] = c->vChrFilter[i];
2148 // Calculate Buffer Sizes so that they won't run out while handling these damn slices
2149 c->vLumBufSize= c->vLumFilterSize;
2150 c->vChrBufSize= c->vChrFilterSize;
2151 for(i=0; i<dstH; i++)
2153 int chrI= i*c->chrDstH / dstH;
2154 int nextSlice= FFMAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
2155 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
2157 nextSlice>>= c->chrSrcVSubSample;
2158 nextSlice<<= c->chrSrcVSubSample;
2159 if(c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
2160 c->vLumBufSize= nextSlice - c->vLumFilterPos[i ];
2161 if(c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
2162 c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
2165 // allocate pixbufs (we use dynamic allocation because otherwise we would need to
2166 c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));
2167 c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));
2168 //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)
2169 /* align at 16 bytes for AltiVec */
2170 for(i=0; i<c->vLumBufSize; i++)
2171 c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_malloc(4000);
2172 for(i=0; i<c->vChrBufSize; i++)
2173 c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc(8000);
2175 //try to avoid drawing green stuff between the right end and the stride end
2176 for(i=0; i<c->vLumBufSize; i++) memset(c->lumPixBuf[i], 0, 4000);
2177 for(i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, 8000);
2179 ASSERT(c->chrDstH <= dstH)
2181 if(flags&SWS_PRINT_INFO)
2184 char *dither= " dithered";
2188 if(flags&SWS_FAST_BILINEAR)
2189 MSG_INFO("\nSwScaler: FAST_BILINEAR scaler, ");
2190 else if(flags&SWS_BILINEAR)
2191 MSG_INFO("\nSwScaler: BILINEAR scaler, ");
2192 else if(flags&SWS_BICUBIC)
2193 MSG_INFO("\nSwScaler: BICUBIC scaler, ");
2194 else if(flags&SWS_X)
2195 MSG_INFO("\nSwScaler: Experimental scaler, ");
2196 else if(flags&SWS_POINT)
2197 MSG_INFO("\nSwScaler: Nearest Neighbor / POINT scaler, ");
2198 else if(flags&SWS_AREA)
2199 MSG_INFO("\nSwScaler: Area Averageing scaler, ");
2200 else if(flags&SWS_BICUBLIN)
2201 MSG_INFO("\nSwScaler: luma BICUBIC / chroma BILINEAR scaler, ");
2202 else if(flags&SWS_GAUSS)
2203 MSG_INFO("\nSwScaler: Gaussian scaler, ");
2204 else if(flags&SWS_SINC)
2205 MSG_INFO("\nSwScaler: Sinc scaler, ");
2206 else if(flags&SWS_LANCZOS)
2207 MSG_INFO("\nSwScaler: Lanczos scaler, ");
2208 else if(flags&SWS_SPLINE)
2209 MSG_INFO("\nSwScaler: Bicubic spline scaler, ");
2211 MSG_INFO("\nSwScaler: ehh flags invalid?! ");
2213 if(dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)
2214 MSG_INFO("from %s to%s %s ",
2215 sws_format_name(srcFormat), dither, sws_format_name(dstFormat));
2217 MSG_INFO("from %s to %s ",
2218 sws_format_name(srcFormat), sws_format_name(dstFormat));
2220 if(flags & SWS_CPU_CAPS_MMX2)
2221 MSG_INFO("using MMX2\n");
2222 else if(flags & SWS_CPU_CAPS_3DNOW)
2223 MSG_INFO("using 3DNOW\n");
2224 else if(flags & SWS_CPU_CAPS_MMX)
2225 MSG_INFO("using MMX\n");
2226 else if(flags & SWS_CPU_CAPS_ALTIVEC)
2227 MSG_INFO("using AltiVec\n");
2229 MSG_INFO("using C\n");
2232 if(flags & SWS_PRINT_INFO)
2234 if(flags & SWS_CPU_CAPS_MMX)
2236 if(c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
2237 MSG_V("SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
2240 if(c->hLumFilterSize==4)
2241 MSG_V("SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");
2242 else if(c->hLumFilterSize==8)
2243 MSG_V("SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");
2245 MSG_V("SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");
2247 if(c->hChrFilterSize==4)
2248 MSG_V("SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");
2249 else if(c->hChrFilterSize==8)
2250 MSG_V("SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");
2252 MSG_V("SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");
2257 #if defined(ARCH_X86) || defined(ARCH_X86_64)
2258 MSG_V("SwScaler: using X86-Asm scaler for horizontal scaling\n");
2260 if(flags & SWS_FAST_BILINEAR)
2261 MSG_V("SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");
2263 MSG_V("SwScaler: using C scaler for horizontal scaling\n");
2266 if(isPlanarYUV(dstFormat))
2268 if(c->vLumFilterSize==1)
2269 MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2271 MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2275 if(c->vLumFilterSize==1 && c->vChrFilterSize==2)
2276 MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
2277 "SwScaler: 2-tap scaler for vertical chrominance scaling (BGR)\n",(flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2278 else if(c->vLumFilterSize==2 && c->vChrFilterSize==2)
2279 MSG_V("SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2281 MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2284 if(dstFormat==PIX_FMT_BGR24)
2285 MSG_V("SwScaler: using %s YV12->BGR24 Converter\n",
2286 (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
2287 else if(dstFormat==PIX_FMT_RGB32)
2288 MSG_V("SwScaler: using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2289 else if(dstFormat==PIX_FMT_BGR565)
2290 MSG_V("SwScaler: using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2291 else if(dstFormat==PIX_FMT_BGR555)
2292 MSG_V("SwScaler: using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2294 MSG_V("SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
2296 if(flags & SWS_PRINT_INFO)
2298 MSG_DBG2("SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2299 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
2300 MSG_DBG2("SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2301 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
2304 c->swScale= getSwsFunc(flags);
2309 * swscale warper, so we don't need to export the SwsContext.
2310 * assumes planar YUV to be in YUV order instead of YVU
2312 int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2313 int srcSliceH, uint8_t* dst[], int dstStride[]){
2314 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
2315 MSG_ERR("swScaler: slices start in the middle!\n");
2318 if (c->sliceDir == 0) {
2319 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
2322 // copy strides, so they can safely be modified
2323 if (c->sliceDir == 1) {
2324 // slices go from top to bottom
2325 int srcStride2[3]= {srcStride[0], srcStride[1], srcStride[2]};
2326 int dstStride2[3]= {dstStride[0], dstStride[1], dstStride[2]};
2327 return c->swScale(c, src, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
2329 // slices go from bottom to top => we flip the image internally
2330 uint8_t* src2[3]= {src[0] + (srcSliceH-1)*srcStride[0],
2331 src[1] + ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1],
2332 src[2] + ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2]
2334 uint8_t* dst2[3]= {dst[0] + (c->dstH-1)*dstStride[0],
2335 dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],
2336 dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};
2337 int srcStride2[3]= {-srcStride[0], -srcStride[1], -srcStride[2]};
2338 int dstStride2[3]= {-dstStride[0], -dstStride[1], -dstStride[2]};
2340 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
2345 * swscale warper, so we don't need to export the SwsContext
2347 int sws_scale(SwsContext *c, uint8_t* srcParam[], int srcStride[], int srcSliceY,
2348 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
2351 src[0] = srcParam[0]; src[1] = srcParam[1]; src[2] = srcParam[2];
2352 dst[0] = dstParam[0]; dst[1] = dstParam[1]; dst[2] = dstParam[2];
2353 //printf("sws: slice %d %d\n", srcSliceY, srcSliceH);
2355 return c->swScale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
2358 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2359 float lumaSharpen, float chromaSharpen,
2360 float chromaHShift, float chromaVShift,
2363 SwsFilter *filter= av_malloc(sizeof(SwsFilter));
2366 filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
2367 filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
2369 filter->lumH= sws_getIdentityVec();
2370 filter->lumV= sws_getIdentityVec();
2373 if(chromaGBlur!=0.0){
2374 filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
2375 filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
2377 filter->chrH= sws_getIdentityVec();
2378 filter->chrV= sws_getIdentityVec();
2381 if(chromaSharpen!=0.0){
2382 SwsVector *id= sws_getIdentityVec();
2383 sws_scaleVec(filter->chrH, -chromaSharpen);
2384 sws_scaleVec(filter->chrV, -chromaSharpen);
2385 sws_addVec(filter->chrH, id);
2386 sws_addVec(filter->chrV, id);
2390 if(lumaSharpen!=0.0){
2391 SwsVector *id= sws_getIdentityVec();
2392 sws_scaleVec(filter->lumH, -lumaSharpen);
2393 sws_scaleVec(filter->lumV, -lumaSharpen);
2394 sws_addVec(filter->lumH, id);
2395 sws_addVec(filter->lumV, id);
2399 if(chromaHShift != 0.0)
2400 sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
2402 if(chromaVShift != 0.0)
2403 sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
2405 sws_normalizeVec(filter->chrH, 1.0);
2406 sws_normalizeVec(filter->chrV, 1.0);
2407 sws_normalizeVec(filter->lumH, 1.0);
2408 sws_normalizeVec(filter->lumV, 1.0);
2410 if(verbose) sws_printVec(filter->chrH);
2411 if(verbose) sws_printVec(filter->lumH);
2417 * returns a normalized gaussian curve used to filter stuff
2418 * quality=3 is high quality, lowwer is lowwer quality
2420 SwsVector *sws_getGaussianVec(double variance, double quality){
2421 const int length= (int)(variance*quality + 0.5) | 1;
2423 double *coeff= av_malloc(length*sizeof(double));
2424 double middle= (length-1)*0.5;
2425 SwsVector *vec= av_malloc(sizeof(SwsVector));
2428 vec->length= length;
2430 for(i=0; i<length; i++)
2432 double dist= i-middle;
2433 coeff[i]= exp( -dist*dist/(2*variance*variance) ) / sqrt(2*variance*PI);
2436 sws_normalizeVec(vec, 1.0);
2441 SwsVector *sws_getConstVec(double c, int length){
2443 double *coeff= av_malloc(length*sizeof(double));
2444 SwsVector *vec= av_malloc(sizeof(SwsVector));
2447 vec->length= length;
2449 for(i=0; i<length; i++)
2456 SwsVector *sws_getIdentityVec(void){
2457 return sws_getConstVec(1.0, 1);
2460 double sws_dcVec(SwsVector *a){
2464 for(i=0; i<a->length; i++)
2470 void sws_scaleVec(SwsVector *a, double scalar){
2473 for(i=0; i<a->length; i++)
2474 a->coeff[i]*= scalar;
2477 void sws_normalizeVec(SwsVector *a, double height){
2478 sws_scaleVec(a, height/sws_dcVec(a));
2481 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){
2482 int length= a->length + b->length - 1;
2483 double *coeff= av_malloc(length*sizeof(double));
2485 SwsVector *vec= av_malloc(sizeof(SwsVector));
2488 vec->length= length;
2490 for(i=0; i<length; i++) coeff[i]= 0.0;
2492 for(i=0; i<a->length; i++)
2494 for(j=0; j<b->length; j++)
2496 coeff[i+j]+= a->coeff[i]*b->coeff[j];
2503 static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){
2504 int length= FFMAX(a->length, b->length);
2505 double *coeff= av_malloc(length*sizeof(double));
2507 SwsVector *vec= av_malloc(sizeof(SwsVector));
2510 vec->length= length;
2512 for(i=0; i<length; i++) coeff[i]= 0.0;
2514 for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2515 for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
2520 static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){
2521 int length= FFMAX(a->length, b->length);
2522 double *coeff= av_malloc(length*sizeof(double));
2524 SwsVector *vec= av_malloc(sizeof(SwsVector));
2527 vec->length= length;
2529 for(i=0; i<length; i++) coeff[i]= 0.0;
2531 for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2532 for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
2537 /* shift left / or right if "shift" is negative */
2538 static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){
2539 int length= a->length + ABS(shift)*2;
2540 double *coeff= av_malloc(length*sizeof(double));
2542 SwsVector *vec= av_malloc(sizeof(SwsVector));
2545 vec->length= length;
2547 for(i=0; i<length; i++) coeff[i]= 0.0;
2549 for(i=0; i<a->length; i++)
2551 coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
2557 void sws_shiftVec(SwsVector *a, int shift){
2558 SwsVector *shifted= sws_getShiftedVec(a, shift);
2560 a->coeff= shifted->coeff;
2561 a->length= shifted->length;
2565 void sws_addVec(SwsVector *a, SwsVector *b){
2566 SwsVector *sum= sws_sumVec(a, b);
2568 a->coeff= sum->coeff;
2569 a->length= sum->length;
2573 void sws_subVec(SwsVector *a, SwsVector *b){
2574 SwsVector *diff= sws_diffVec(a, b);
2576 a->coeff= diff->coeff;
2577 a->length= diff->length;
2581 void sws_convVec(SwsVector *a, SwsVector *b){
2582 SwsVector *conv= sws_getConvVec(a, b);
2584 a->coeff= conv->coeff;
2585 a->length= conv->length;
2589 SwsVector *sws_cloneVec(SwsVector *a){
2590 double *coeff= av_malloc(a->length*sizeof(double));
2592 SwsVector *vec= av_malloc(sizeof(SwsVector));
2595 vec->length= a->length;
2597 for(i=0; i<a->length; i++) coeff[i]= a->coeff[i];
2602 void sws_printVec(SwsVector *a){
2608 for(i=0; i<a->length; i++)
2609 if(a->coeff[i]>max) max= a->coeff[i];
2611 for(i=0; i<a->length; i++)
2612 if(a->coeff[i]<min) min= a->coeff[i];
2616 for(i=0; i<a->length; i++)
2618 int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
2619 MSG_DBG2("%1.3f ", a->coeff[i]);
2620 for(;x>0; x--) MSG_DBG2(" ");
2625 void sws_freeVec(SwsVector *a){
2633 void sws_freeFilter(SwsFilter *filter){
2636 if(filter->lumH) sws_freeVec(filter->lumH);
2637 if(filter->lumV) sws_freeVec(filter->lumV);
2638 if(filter->chrH) sws_freeVec(filter->chrH);
2639 if(filter->chrV) sws_freeVec(filter->chrV);
2644 void sws_freeContext(SwsContext *c){
2650 for(i=0; i<c->vLumBufSize; i++)
2652 av_free(c->lumPixBuf[i]);
2653 c->lumPixBuf[i]=NULL;
2655 av_free(c->lumPixBuf);
2661 for(i=0; i<c->vChrBufSize; i++)
2663 av_free(c->chrPixBuf[i]);
2664 c->chrPixBuf[i]=NULL;
2666 av_free(c->chrPixBuf);
2670 av_free(c->vLumFilter);
2671 c->vLumFilter = NULL;
2672 av_free(c->vChrFilter);
2673 c->vChrFilter = NULL;
2674 av_free(c->hLumFilter);
2675 c->hLumFilter = NULL;
2676 av_free(c->hChrFilter);
2677 c->hChrFilter = NULL;
2679 av_free(c->vYCoeffsBank);
2680 c->vYCoeffsBank = NULL;
2681 av_free(c->vCCoeffsBank);
2682 c->vCCoeffsBank = NULL;
2685 av_free(c->vLumFilterPos);
2686 c->vLumFilterPos = NULL;
2687 av_free(c->vChrFilterPos);
2688 c->vChrFilterPos = NULL;
2689 av_free(c->hLumFilterPos);
2690 c->hLumFilterPos = NULL;
2691 av_free(c->hChrFilterPos);
2692 c->hChrFilterPos = NULL;
2694 #if defined(ARCH_X86) || defined(ARCH_X86_64)
2695 #ifdef MAP_ANONYMOUS
2696 if(c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);
2697 if(c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);
2699 av_free(c->funnyYCode);
2700 av_free(c->funnyUVCode);
2703 c->funnyUVCode=NULL;
2704 #endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */
2706 av_free(c->lumMmx2Filter);
2707 c->lumMmx2Filter=NULL;
2708 av_free(c->chrMmx2Filter);
2709 c->chrMmx2Filter=NULL;
2710 av_free(c->lumMmx2FilterPos);
2711 c->lumMmx2FilterPos=NULL;
2712 av_free(c->chrMmx2FilterPos);
2713 c->chrMmx2FilterPos=NULL;
2714 av_free(c->yuvTable);
2721 * Checks if context is valid or reallocs a new one instead.
2722 * If context is NULL, just calls sws_getContext() to get a new one.
2723 * Otherwise, checks if the parameters are the same already saved in context.
2724 * If that is the case, returns the current context.
2725 * Otherwise, frees context and gets a new one.
2727 * Be warned that srcFilter, dstFilter are not checked, they are
2728 * asumed to remain valid.
2730 struct SwsContext *sws_getCachedContext(struct SwsContext *context,
2731 int srcW, int srcH, int srcFormat,
2732 int dstW, int dstH, int dstFormat, int flags,
2733 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)
2735 if (context != NULL) {
2736 if ((context->srcW != srcW) || (context->srcH != srcH) ||
2737 (context->srcFormat != srcFormat) ||
2738 (context->dstW != dstW) || (context->dstH != dstH) ||
2739 (context->dstFormat != dstFormat) || (context->flags != flags) ||
2740 (context->param != param))
2742 sws_freeContext(context);
2746 if (context == NULL) {
2747 return sws_getContext(srcW, srcH, srcFormat,
2748 dstW, dstH, dstFormat, flags,
2749 srcFilter, dstFilter, param);