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, BGR24, BGR16, BGR15, RGB32, 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
64 #ifdef HAVE_SYS_MMAN_H
66 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
67 #define MAP_ANONYMOUS MAP_ANON
71 #include "swscale_internal.h"
73 #include "libavutil/x86_cpu.h"
74 #include "libavutil/bswap.h"
83 //#define WORDS_BIGENDIAN
86 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
88 #define RET 0xC3 //near return opcode for X86
93 #define PI 3.14159265358979323846
96 #define isSupportedIn(x) ( \
97 (x)==PIX_FMT_YUV420P \
98 || (x)==PIX_FMT_YUVA420P \
99 || (x)==PIX_FMT_YUYV422 \
100 || (x)==PIX_FMT_UYVY422 \
101 || (x)==PIX_FMT_RGB32 \
102 || (x)==PIX_FMT_BGR24 \
103 || (x)==PIX_FMT_BGR565 \
104 || (x)==PIX_FMT_BGR555 \
105 || (x)==PIX_FMT_BGR32 \
106 || (x)==PIX_FMT_RGB24 \
107 || (x)==PIX_FMT_RGB565 \
108 || (x)==PIX_FMT_RGB555 \
109 || (x)==PIX_FMT_GRAY8 \
110 || (x)==PIX_FMT_YUV410P \
111 || (x)==PIX_FMT_GRAY16BE \
112 || (x)==PIX_FMT_GRAY16LE \
113 || (x)==PIX_FMT_YUV444P \
114 || (x)==PIX_FMT_YUV422P \
115 || (x)==PIX_FMT_YUV411P \
116 || (x)==PIX_FMT_PAL8 \
117 || (x)==PIX_FMT_BGR8 \
118 || (x)==PIX_FMT_RGB8 \
119 || (x)==PIX_FMT_BGR4_BYTE \
120 || (x)==PIX_FMT_RGB4_BYTE \
121 || (x)==PIX_FMT_YUV440P \
123 #define isSupportedOut(x) ( \
124 (x)==PIX_FMT_YUV420P \
125 || (x)==PIX_FMT_YUYV422 \
126 || (x)==PIX_FMT_UYVY422 \
127 || (x)==PIX_FMT_YUV444P \
128 || (x)==PIX_FMT_YUV422P \
129 || (x)==PIX_FMT_YUV411P \
132 || (x)==PIX_FMT_NV12 \
133 || (x)==PIX_FMT_NV21 \
134 || (x)==PIX_FMT_GRAY16BE \
135 || (x)==PIX_FMT_GRAY16LE \
136 || (x)==PIX_FMT_GRAY8 \
137 || (x)==PIX_FMT_YUV410P \
139 #define isPacked(x) ( \
141 || (x)==PIX_FMT_YUYV422 \
142 || (x)==PIX_FMT_UYVY422 \
147 #define RGB2YUV_SHIFT 16
148 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
149 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
150 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
151 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
152 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
153 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
154 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
155 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
156 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
158 extern const int32_t Inverse_Table_6_9[8][4];
162 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
165 more intelligent misalignment avoidance for the horizontal scaler
166 write special vertical cubic upscale version
167 Optimize C code (yv12 / minmax)
168 add support for packed pixel yuv input & output
169 add support for Y8 output
170 optimize bgr24 & bgr32
171 add BGR4 output support
172 write special BGR->BGR scaler
175 #if defined(ARCH_X86) && defined (CONFIG_GPL)
176 DECLARE_ASM_CONST(8, uint64_t, bF8)= 0xF8F8F8F8F8F8F8F8LL;
177 DECLARE_ASM_CONST(8, uint64_t, bFC)= 0xFCFCFCFCFCFCFCFCLL;
178 DECLARE_ASM_CONST(8, uint64_t, w10)= 0x0010001000100010LL;
179 DECLARE_ASM_CONST(8, uint64_t, w02)= 0x0002000200020002LL;
180 DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;
181 DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;
182 DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;
183 DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;
185 static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
186 static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
187 static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
188 static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
190 const DECLARE_ALIGNED(8, uint64_t, ff_dither4[2]) = {
191 0x0103010301030103LL,
192 0x0200020002000200LL,};
194 const DECLARE_ALIGNED(8, uint64_t, ff_dither8[2]) = {
195 0x0602060206020602LL,
196 0x0004000400040004LL,};
198 DECLARE_ASM_CONST(8, uint64_t, b16Mask)= 0x001F001F001F001FLL;
199 DECLARE_ASM_CONST(8, uint64_t, g16Mask)= 0x07E007E007E007E0LL;
200 DECLARE_ASM_CONST(8, uint64_t, r16Mask)= 0xF800F800F800F800LL;
201 DECLARE_ASM_CONST(8, uint64_t, b15Mask)= 0x001F001F001F001FLL;
202 DECLARE_ASM_CONST(8, uint64_t, g15Mask)= 0x03E003E003E003E0LL;
203 DECLARE_ASM_CONST(8, uint64_t, r15Mask)= 0x7C007C007C007C00LL;
205 DECLARE_ALIGNED(8, const uint64_t, ff_M24A) = 0x00FF0000FF0000FFLL;
206 DECLARE_ALIGNED(8, const uint64_t, ff_M24B) = 0xFF0000FF0000FF00LL;
207 DECLARE_ALIGNED(8, const uint64_t, ff_M24C) = 0x0000FF0000FF0000LL;
210 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff) = 0x000000210041000DULL;
211 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff) = 0x0000FFEEFFDC0038ULL;
212 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff) = 0x00000038FFD2FFF8ULL;
214 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff) = 0x000020E540830C8BULL;
215 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff) = 0x0000ED0FDAC23831ULL;
216 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff) = 0x00003831D0E6F6EAULL;
217 #endif /* FAST_BGR2YV12 */
218 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset) = 0x1010101010101010ULL;
219 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;
220 DECLARE_ALIGNED(8, const uint64_t, ff_w1111) = 0x0001000100010001ULL;
221 #endif /* defined(ARCH_X86) */
223 // clipping helper table for C implementations:
224 static unsigned char clip_table[768];
226 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
228 extern const uint8_t dither_2x2_4[2][8];
229 extern const uint8_t dither_2x2_8[2][8];
230 extern const uint8_t dither_8x8_32[8][8];
231 extern const uint8_t dither_8x8_73[8][8];
232 extern const uint8_t dither_8x8_220[8][8];
234 const char *sws_format_name(enum PixelFormat format)
237 case PIX_FMT_YUV420P:
239 case PIX_FMT_YUVA420P:
241 case PIX_FMT_YUYV422:
247 case PIX_FMT_YUV422P:
249 case PIX_FMT_YUV444P:
253 case PIX_FMT_YUV410P:
255 case PIX_FMT_YUV411P:
261 case PIX_FMT_GRAY16BE:
263 case PIX_FMT_GRAY16LE:
267 case PIX_FMT_MONOWHITE:
269 case PIX_FMT_MONOBLACK:
273 case PIX_FMT_YUVJ420P:
275 case PIX_FMT_YUVJ422P:
277 case PIX_FMT_YUVJ444P:
279 case PIX_FMT_XVMC_MPEG2_MC:
280 return "xvmc_mpeg2_mc";
281 case PIX_FMT_XVMC_MPEG2_IDCT:
282 return "xvmc_mpeg2_idct";
283 case PIX_FMT_UYVY422:
285 case PIX_FMT_UYYVYY411:
287 case PIX_FMT_RGB32_1:
289 case PIX_FMT_BGR32_1:
301 case PIX_FMT_BGR4_BYTE:
307 case PIX_FMT_RGB4_BYTE:
313 case PIX_FMT_YUV440P:
316 return "Unknown format";
320 static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
321 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
322 uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
324 //FIXME Optimize (just quickly writen not opti..)
326 for (i=0; i<dstW; i++)
330 for (j=0; j<lumFilterSize; j++)
331 val += lumSrc[j][i] * lumFilter[j];
333 dest[i]= av_clip_uint8(val>>19);
337 for (i=0; i<chrDstW; i++)
342 for (j=0; j<chrFilterSize; j++)
344 u += chrSrc[j][i] * chrFilter[j];
345 v += chrSrc[j][i + VOFW] * chrFilter[j];
348 uDest[i]= av_clip_uint8(u>>19);
349 vDest[i]= av_clip_uint8(v>>19);
353 static inline void yuv2nv12XinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
354 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
355 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
357 //FIXME Optimize (just quickly writen not opti..)
359 for (i=0; i<dstW; i++)
363 for (j=0; j<lumFilterSize; j++)
364 val += lumSrc[j][i] * lumFilter[j];
366 dest[i]= av_clip_uint8(val>>19);
372 if (dstFormat == PIX_FMT_NV12)
373 for (i=0; i<chrDstW; i++)
378 for (j=0; j<chrFilterSize; j++)
380 u += chrSrc[j][i] * chrFilter[j];
381 v += chrSrc[j][i + VOFW] * chrFilter[j];
384 uDest[2*i]= av_clip_uint8(u>>19);
385 uDest[2*i+1]= av_clip_uint8(v>>19);
388 for (i=0; i<chrDstW; i++)
393 for (j=0; j<chrFilterSize; j++)
395 u += chrSrc[j][i] * chrFilter[j];
396 v += chrSrc[j][i + VOFW] * chrFilter[j];
399 uDest[2*i]= av_clip_uint8(v>>19);
400 uDest[2*i+1]= av_clip_uint8(u>>19);
404 #define YSCALE_YUV_2_PACKEDX_C(type) \
405 for (i=0; i<(dstW>>1); i++){\
411 type av_unused *r, *b, *g;\
414 for (j=0; j<lumFilterSize; j++)\
416 Y1 += lumSrc[j][i2] * lumFilter[j];\
417 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
419 for (j=0; j<chrFilterSize; j++)\
421 U += chrSrc[j][i] * chrFilter[j];\
422 V += chrSrc[j][i+VOFW] * chrFilter[j];\
428 if ((Y1|Y2|U|V)&256)\
430 if (Y1>255) Y1=255; \
431 else if (Y1<0)Y1=0; \
432 if (Y2>255) Y2=255; \
433 else if (Y2<0)Y2=0; \
440 #define YSCALE_YUV_2_RGBX_C(type) \
441 YSCALE_YUV_2_PACKEDX_C(type) \
442 r = (type *)c->table_rV[V]; \
443 g = (type *)(c->table_gU[U] + c->table_gV[V]); \
444 b = (type *)c->table_bU[U]; \
446 #define YSCALE_YUV_2_PACKED2_C \
447 for (i=0; i<(dstW>>1); i++){ \
449 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19; \
450 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19; \
451 int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19; \
452 int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19; \
454 #define YSCALE_YUV_2_RGB2_C(type) \
455 YSCALE_YUV_2_PACKED2_C\
457 r = (type *)c->table_rV[V];\
458 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
459 b = (type *)c->table_bU[U];\
461 #define YSCALE_YUV_2_PACKED1_C \
462 for (i=0; i<(dstW>>1); i++){\
464 int Y1= buf0[i2 ]>>7;\
465 int Y2= buf0[i2+1]>>7;\
466 int U= (uvbuf1[i ])>>7;\
467 int V= (uvbuf1[i+VOFW])>>7;\
469 #define YSCALE_YUV_2_RGB1_C(type) \
470 YSCALE_YUV_2_PACKED1_C\
472 r = (type *)c->table_rV[V];\
473 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
474 b = (type *)c->table_bU[U];\
476 #define YSCALE_YUV_2_PACKED1B_C \
477 for (i=0; i<(dstW>>1); i++){\
479 int Y1= buf0[i2 ]>>7;\
480 int Y2= buf0[i2+1]>>7;\
481 int U= (uvbuf0[i ] + uvbuf1[i ])>>8;\
482 int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\
484 #define YSCALE_YUV_2_RGB1B_C(type) \
485 YSCALE_YUV_2_PACKED1B_C\
487 r = (type *)c->table_rV[V];\
488 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
489 b = (type *)c->table_bU[U];\
491 #define YSCALE_YUV_2_ANYRGB_C(func, func2)\
492 switch(c->dstFormat)\
497 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
498 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
503 ((uint8_t*)dest)[0]= r[Y1];\
504 ((uint8_t*)dest)[1]= g[Y1];\
505 ((uint8_t*)dest)[2]= b[Y1];\
506 ((uint8_t*)dest)[3]= r[Y2];\
507 ((uint8_t*)dest)[4]= g[Y2];\
508 ((uint8_t*)dest)[5]= b[Y2];\
514 ((uint8_t*)dest)[0]= b[Y1];\
515 ((uint8_t*)dest)[1]= g[Y1];\
516 ((uint8_t*)dest)[2]= r[Y1];\
517 ((uint8_t*)dest)[3]= b[Y2];\
518 ((uint8_t*)dest)[4]= g[Y2];\
519 ((uint8_t*)dest)[5]= r[Y2];\
523 case PIX_FMT_RGB565:\
524 case PIX_FMT_BGR565:\
526 const int dr1= dither_2x2_8[y&1 ][0];\
527 const int dg1= dither_2x2_4[y&1 ][0];\
528 const int db1= dither_2x2_8[(y&1)^1][0];\
529 const int dr2= dither_2x2_8[y&1 ][1];\
530 const int dg2= dither_2x2_4[y&1 ][1];\
531 const int db2= dither_2x2_8[(y&1)^1][1];\
533 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
534 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
538 case PIX_FMT_RGB555:\
539 case PIX_FMT_BGR555:\
541 const int dr1= dither_2x2_8[y&1 ][0];\
542 const int dg1= dither_2x2_8[y&1 ][1];\
543 const int db1= dither_2x2_8[(y&1)^1][0];\
544 const int dr2= dither_2x2_8[y&1 ][1];\
545 const int dg2= dither_2x2_8[y&1 ][0];\
546 const int db2= dither_2x2_8[(y&1)^1][1];\
548 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
549 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
556 const uint8_t * const d64= dither_8x8_73[y&7];\
557 const uint8_t * const d32= dither_8x8_32[y&7];\
559 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
560 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
567 const uint8_t * const d64= dither_8x8_73 [y&7];\
568 const uint8_t * const d128=dither_8x8_220[y&7];\
570 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
571 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
575 case PIX_FMT_RGB4_BYTE:\
576 case PIX_FMT_BGR4_BYTE:\
578 const uint8_t * const d64= dither_8x8_73 [y&7];\
579 const uint8_t * const d128=dither_8x8_220[y&7];\
581 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
582 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
586 case PIX_FMT_MONOBLACK:\
588 const uint8_t * const d128=dither_8x8_220[y&7];\
589 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
590 for (i=0; i<dstW-7; i+=8){\
592 acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];\
593 acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
594 acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
595 acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
596 acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
597 acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
598 acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
599 acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
600 ((uint8_t*)dest)[0]= acc;\
605 ((uint8_t*)dest)-= dstW>>4;\
609 static int top[1024];\
610 static int last_new[1024][1024];\
611 static int last_in3[1024][1024];\
612 static int drift[1024][1024];\
616 const uint8_t * const d128=dither_8x8_220[y&7];\
621 for (i=dstW>>1; i<dstW; i++){\
622 int in= ((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19);\
623 int in2 = (76309 * (in - 16) + 32768) >> 16;\
624 int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\
625 int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\
626 + (last_new[y][i] - in3)*f/256;\
627 int new= old> 128 ? 255 : 0;\
629 error_new+= FFABS(last_new[y][i] - new);\
630 error_in3+= FFABS(last_in3[y][i] - in3);\
631 f= error_new - error_in3*4;\
636 left= top[i]= old - new;\
637 last_new[y][i]= new;\
638 last_in3[y][i]= in3;\
640 acc+= acc + (new&1);\
642 ((uint8_t*)dest)[0]= acc;\
650 case PIX_FMT_YUYV422:\
652 ((uint8_t*)dest)[2*i2+0]= Y1;\
653 ((uint8_t*)dest)[2*i2+1]= U;\
654 ((uint8_t*)dest)[2*i2+2]= Y2;\
655 ((uint8_t*)dest)[2*i2+3]= V;\
658 case PIX_FMT_UYVY422:\
660 ((uint8_t*)dest)[2*i2+0]= U;\
661 ((uint8_t*)dest)[2*i2+1]= Y1;\
662 ((uint8_t*)dest)[2*i2+2]= V;\
663 ((uint8_t*)dest)[2*i2+3]= Y2;\
669 static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
670 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
671 uint8_t *dest, int dstW, int y)
678 YSCALE_YUV_2_RGBX_C(uint32_t)
679 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
680 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
684 YSCALE_YUV_2_RGBX_C(uint8_t)
685 ((uint8_t*)dest)[0]= r[Y1];
686 ((uint8_t*)dest)[1]= g[Y1];
687 ((uint8_t*)dest)[2]= b[Y1];
688 ((uint8_t*)dest)[3]= r[Y2];
689 ((uint8_t*)dest)[4]= g[Y2];
690 ((uint8_t*)dest)[5]= b[Y2];
695 YSCALE_YUV_2_RGBX_C(uint8_t)
696 ((uint8_t*)dest)[0]= b[Y1];
697 ((uint8_t*)dest)[1]= g[Y1];
698 ((uint8_t*)dest)[2]= r[Y1];
699 ((uint8_t*)dest)[3]= b[Y2];
700 ((uint8_t*)dest)[4]= g[Y2];
701 ((uint8_t*)dest)[5]= r[Y2];
708 const int dr1= dither_2x2_8[y&1 ][0];
709 const int dg1= dither_2x2_4[y&1 ][0];
710 const int db1= dither_2x2_8[(y&1)^1][0];
711 const int dr2= dither_2x2_8[y&1 ][1];
712 const int dg2= dither_2x2_4[y&1 ][1];
713 const int db2= dither_2x2_8[(y&1)^1][1];
714 YSCALE_YUV_2_RGBX_C(uint16_t)
715 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
716 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
723 const int dr1= dither_2x2_8[y&1 ][0];
724 const int dg1= dither_2x2_8[y&1 ][1];
725 const int db1= dither_2x2_8[(y&1)^1][0];
726 const int dr2= dither_2x2_8[y&1 ][1];
727 const int dg2= dither_2x2_8[y&1 ][0];
728 const int db2= dither_2x2_8[(y&1)^1][1];
729 YSCALE_YUV_2_RGBX_C(uint16_t)
730 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
731 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
738 const uint8_t * const d64= dither_8x8_73[y&7];
739 const uint8_t * const d32= dither_8x8_32[y&7];
740 YSCALE_YUV_2_RGBX_C(uint8_t)
741 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
742 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
749 const uint8_t * const d64= dither_8x8_73 [y&7];
750 const uint8_t * const d128=dither_8x8_220[y&7];
751 YSCALE_YUV_2_RGBX_C(uint8_t)
752 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]
753 +((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);
757 case PIX_FMT_RGB4_BYTE:
758 case PIX_FMT_BGR4_BYTE:
760 const uint8_t * const d64= dither_8x8_73 [y&7];
761 const uint8_t * const d128=dither_8x8_220[y&7];
762 YSCALE_YUV_2_RGBX_C(uint8_t)
763 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
764 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
768 case PIX_FMT_MONOBLACK:
770 const uint8_t * const d128=dither_8x8_220[y&7];
771 uint8_t *g= c->table_gU[128] + c->table_gV[128];
773 for (i=0; i<dstW-1; i+=2){
778 for (j=0; j<lumFilterSize; j++)
780 Y1 += lumSrc[j][i] * lumFilter[j];
781 Y2 += lumSrc[j][i+1] * lumFilter[j];
792 acc+= acc + g[Y1+d128[(i+0)&7]];
793 acc+= acc + g[Y2+d128[(i+1)&7]];
795 ((uint8_t*)dest)[0]= acc;
801 case PIX_FMT_YUYV422:
802 YSCALE_YUV_2_PACKEDX_C(void)
803 ((uint8_t*)dest)[2*i2+0]= Y1;
804 ((uint8_t*)dest)[2*i2+1]= U;
805 ((uint8_t*)dest)[2*i2+2]= Y2;
806 ((uint8_t*)dest)[2*i2+3]= V;
809 case PIX_FMT_UYVY422:
810 YSCALE_YUV_2_PACKEDX_C(void)
811 ((uint8_t*)dest)[2*i2+0]= U;
812 ((uint8_t*)dest)[2*i2+1]= Y1;
813 ((uint8_t*)dest)[2*i2+2]= V;
814 ((uint8_t*)dest)[2*i2+3]= Y2;
821 //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
823 #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT) || !defined(CONFIG_GPL)
828 #if (defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
829 #define COMPILE_ALTIVEC
830 #endif //HAVE_ALTIVEC
831 #endif //ARCH_POWERPC
833 #if defined(ARCH_X86)
835 #if ((defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
839 #if (defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
843 #if ((defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
844 #define COMPILE_3DNOW
846 #endif //ARCH_X86 || ARCH_X86_64
857 #define RENAME(a) a ## _C
858 #include "swscale_template.c"
861 #ifdef COMPILE_ALTIVEC
864 #define RENAME(a) a ## _altivec
865 #include "swscale_template.c"
868 #if defined(ARCH_X86)
877 #define RENAME(a) a ## _X86
878 #include "swscale_template.c"
886 #define RENAME(a) a ## _MMX
887 #include "swscale_template.c"
896 #define RENAME(a) a ## _MMX2
897 #include "swscale_template.c"
906 #define RENAME(a) a ## _3DNow
907 #include "swscale_template.c"
910 #endif //ARCH_X86 || ARCH_X86_64
912 // minor note: the HAVE_xyz is messed up after that line so don't use it
914 static double getSplineCoeff(double a, double b, double c, double d, double dist)
916 // printf("%f %f %f %f %f\n", a,b,c,d,dist);
917 if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;
918 else return getSplineCoeff( 0.0,
925 static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
926 int srcW, int dstW, int filterAlign, int one, int flags,
927 SwsVector *srcFilter, SwsVector *dstFilter, double param[2])
934 double *filter2=NULL;
935 #if defined(ARCH_X86)
936 if (flags & SWS_CPU_CAPS_MMX)
937 asm volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
940 // Note the +1 is for the MMXscaler which reads over the end
941 *filterPos = av_malloc((dstW+1)*sizeof(int16_t));
943 if (FFABS(xInc - 0x10000) <10) // unscaled
947 filter= av_malloc(dstW*sizeof(double)*filterSize);
948 for (i=0; i<dstW*filterSize; i++) filter[i]=0;
950 for (i=0; i<dstW; i++)
952 filter[i*filterSize]=1;
957 else if (flags&SWS_POINT) // lame looking point sampling mode
962 filter= av_malloc(dstW*sizeof(double)*filterSize);
964 xDstInSrc= xInc/2 - 0x8000;
965 for (i=0; i<dstW; i++)
967 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
974 else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
978 if (flags&SWS_BICUBIC) filterSize= 4;
979 else if (flags&SWS_X ) filterSize= 4;
980 else filterSize= 2; // SWS_BILINEAR / SWS_AREA
981 filter= av_malloc(dstW*sizeof(double)*filterSize);
983 xDstInSrc= xInc/2 - 0x8000;
984 for (i=0; i<dstW; i++)
986 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
990 //Bilinear upscale / linear interpolate / Area averaging
991 for (j=0; j<filterSize; j++)
993 double d= FFABS((xx<<16) - xDstInSrc)/(double)(1<<16);
994 double coeff= 1.0 - d;
995 if (coeff<0) coeff=0;
996 filter[i*filterSize + j]= coeff;
1005 double sizeFactor, filterSizeInSrc;
1006 const double xInc1= (double)xInc / (double)(1<<16);
1008 if (flags&SWS_BICUBIC) sizeFactor= 4.0;
1009 else if (flags&SWS_X) sizeFactor= 8.0;
1010 else if (flags&SWS_AREA) sizeFactor= 1.0; //downscale only, for upscale it is bilinear
1011 else if (flags&SWS_GAUSS) sizeFactor= 8.0; // infinite ;)
1012 else if (flags&SWS_LANCZOS) sizeFactor= param[0] != SWS_PARAM_DEFAULT ? 2.0*param[0] : 6.0;
1013 else if (flags&SWS_SINC) sizeFactor= 20.0; // infinite ;)
1014 else if (flags&SWS_SPLINE) sizeFactor= 20.0; // infinite ;)
1015 else if (flags&SWS_BILINEAR) sizeFactor= 2.0;
1017 sizeFactor= 0.0; //GCC warning killer
1021 if (xInc1 <= 1.0) filterSizeInSrc= sizeFactor; // upscale
1022 else filterSizeInSrc= sizeFactor*srcW / (double)dstW;
1024 filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible
1025 if (filterSize > srcW-2) filterSize=srcW-2;
1027 filter= av_malloc(dstW*sizeof(double)*filterSize);
1029 xDstInSrc= xInc1 / 2.0 - 0.5;
1030 for (i=0; i<dstW; i++)
1032 int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);
1034 (*filterPos)[i]= xx;
1035 for (j=0; j<filterSize; j++)
1037 double d= FFABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;
1039 if (flags & SWS_BICUBIC)
1041 double B= param[0] != SWS_PARAM_DEFAULT ? param[0] : 0.0;
1042 double C= param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6;
1045 coeff = (12-9*B-6*C)*d*d*d + (-18+12*B+6*C)*d*d + 6-2*B;
1047 coeff = (-B-6*C)*d*d*d + (6*B+30*C)*d*d + (-12*B-48*C)*d +8*B+24*C;
1051 /* else if (flags & SWS_X)
1053 double p= param ? param*0.01 : 0.3;
1054 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1055 coeff*= pow(2.0, - p*d*d);
1057 else if (flags & SWS_X)
1059 double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
1065 if (coeff<0.0) coeff= -pow(-coeff, A);
1066 else coeff= pow( coeff, A);
1067 coeff= coeff*0.5 + 0.5;
1069 else if (flags & SWS_AREA)
1071 double srcPixelSize= 1.0/xInc1;
1072 if (d + srcPixelSize/2 < 0.5) coeff= 1.0;
1073 else if (d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
1076 else if (flags & SWS_GAUSS)
1078 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1079 coeff = pow(2.0, - p*d*d);
1081 else if (flags & SWS_SINC)
1083 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1085 else if (flags & SWS_LANCZOS)
1087 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1088 coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;
1091 else if (flags & SWS_BILINEAR)
1094 if (coeff<0) coeff=0;
1096 else if (flags & SWS_SPLINE)
1098 double p=-2.196152422706632;
1099 coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);
1102 coeff= 0.0; //GCC warning killer
1106 filter[i*filterSize + j]= coeff;
1113 /* apply src & dst Filter to filter -> filter2
1116 assert(filterSize>0);
1117 filter2Size= filterSize;
1118 if (srcFilter) filter2Size+= srcFilter->length - 1;
1119 if (dstFilter) filter2Size+= dstFilter->length - 1;
1120 assert(filter2Size>0);
1121 filter2= av_malloc(filter2Size*dstW*sizeof(double));
1123 for (i=0; i<dstW; i++)
1126 SwsVector scaleFilter;
1129 scaleFilter.coeff= filter + i*filterSize;
1130 scaleFilter.length= filterSize;
1132 if (srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);
1133 else outVec= &scaleFilter;
1135 assert(outVec->length == filter2Size);
1138 for (j=0; j<outVec->length; j++)
1140 filter2[i*filter2Size + j]= outVec->coeff[j];
1143 (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
1145 if (outVec != &scaleFilter) sws_freeVec(outVec);
1147 av_free(filter); filter=NULL;
1149 /* try to reduce the filter-size (step1 find size and shift left) */
1150 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
1152 for (i=dstW-1; i>=0; i--)
1154 int min= filter2Size;
1158 /* get rid off near zero elements on the left by shifting left */
1159 for (j=0; j<filter2Size; j++)
1162 cutOff += FFABS(filter2[i*filter2Size]);
1164 if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1166 /* preserve monotonicity because the core can't handle the filter otherwise */
1167 if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
1169 // Move filter coeffs left
1170 for (k=1; k<filter2Size; k++)
1171 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
1172 filter2[i*filter2Size + k - 1]= 0.0;
1177 /* count near zeros on the right */
1178 for (j=filter2Size-1; j>0; j--)
1180 cutOff += FFABS(filter2[i*filter2Size + j]);
1182 if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1186 if (min>minFilterSize) minFilterSize= min;
1189 if (flags & SWS_CPU_CAPS_ALTIVEC) {
1190 // we can handle the special case 4,
1191 // so we don't want to go to the full 8
1192 if (minFilterSize < 5)
1195 // we really don't want to waste our time
1196 // doing useless computation, so fall-back on
1197 // the scalar C code for very small filter.
1198 // vectorizing is worth it only if you have
1199 // decent-sized vector.
1200 if (minFilterSize < 3)
1204 if (flags & SWS_CPU_CAPS_MMX) {
1205 // special case for unscaled vertical filtering
1206 if (minFilterSize == 1 && filterAlign == 2)
1210 assert(minFilterSize > 0);
1211 filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
1212 assert(filterSize > 0);
1213 filter= av_malloc(filterSize*dstW*sizeof(double));
1214 if (filterSize >= MAX_FILTER_SIZE)
1216 *outFilterSize= filterSize;
1218 if (flags&SWS_PRINT_INFO)
1219 av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
1220 /* try to reduce the filter-size (step2 reduce it) */
1221 for (i=0; i<dstW; i++)
1225 for (j=0; j<filterSize; j++)
1227 if (j>=filter2Size) filter[i*filterSize + j]= 0.0;
1228 else filter[i*filterSize + j]= filter2[i*filter2Size + j];
1231 av_free(filter2); filter2=NULL;
1234 //FIXME try to align filterpos if possible
1237 for (i=0; i<dstW; i++)
1240 if ((*filterPos)[i] < 0)
1242 // Move filter coeffs left to compensate for filterPos
1243 for (j=1; j<filterSize; j++)
1245 int left= FFMAX(j + (*filterPos)[i], 0);
1246 filter[i*filterSize + left] += filter[i*filterSize + j];
1247 filter[i*filterSize + j]=0;
1252 if ((*filterPos)[i] + filterSize > srcW)
1254 int shift= (*filterPos)[i] + filterSize - srcW;
1255 // Move filter coeffs right to compensate for filterPos
1256 for (j=filterSize-2; j>=0; j--)
1258 int right= FFMIN(j + shift, filterSize-1);
1259 filter[i*filterSize +right] += filter[i*filterSize +j];
1260 filter[i*filterSize +j]=0;
1262 (*filterPos)[i]= srcW - filterSize;
1266 // Note the +1 is for the MMXscaler which reads over the end
1267 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
1268 *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));
1270 /* Normalize & Store in outFilter */
1271 for (i=0; i<dstW; i++)
1278 for (j=0; j<filterSize; j++)
1280 sum+= filter[i*filterSize + j];
1283 for (j=0; j<*outFilterSize; j++)
1285 double v= filter[i*filterSize + j]*scale + error;
1286 int intV= floor(v + 0.5);
1287 (*outFilter)[i*(*outFilterSize) + j]= intV;
1292 (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
1293 for (i=0; i<*outFilterSize; i++)
1295 int j= dstW*(*outFilterSize);
1296 (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
1304 static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
1307 long imm8OfPShufW1A;
1308 long imm8OfPShufW2A;
1309 long fragmentLengthA;
1311 long imm8OfPShufW1B;
1312 long imm8OfPShufW2B;
1313 long fragmentLengthB;
1318 // create an optimized horizontal scaling routine
1326 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
1327 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
1328 "movd 1(%%"REG_c", %%"REG_S"), %%mm1 \n\t"
1329 "punpcklbw %%mm7, %%mm1 \n\t"
1330 "punpcklbw %%mm7, %%mm0 \n\t"
1331 "pshufw $0xFF, %%mm1, %%mm1 \n\t"
1333 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1335 "psubw %%mm1, %%mm0 \n\t"
1336 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
1337 "pmullw %%mm3, %%mm0 \n\t"
1338 "psllw $7, %%mm1 \n\t"
1339 "paddw %%mm1, %%mm0 \n\t"
1341 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
1343 "add $8, %%"REG_a" \n\t"
1347 "lea " LOCAL_MANGLE(0b) ", %0 \n\t"
1348 "lea " LOCAL_MANGLE(1b) ", %1 \n\t"
1349 "lea " LOCAL_MANGLE(2b) ", %2 \n\t"
1354 "lea " LOCAL_MANGLE(9b) ", %3 \n\t"
1358 :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
1359 "=r" (fragmentLengthA)
1366 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
1367 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
1368 "punpcklbw %%mm7, %%mm0 \n\t"
1369 "pshufw $0xFF, %%mm0, %%mm1 \n\t"
1371 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1373 "psubw %%mm1, %%mm0 \n\t"
1374 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
1375 "pmullw %%mm3, %%mm0 \n\t"
1376 "psllw $7, %%mm1 \n\t"
1377 "paddw %%mm1, %%mm0 \n\t"
1379 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
1381 "add $8, %%"REG_a" \n\t"
1385 "lea " LOCAL_MANGLE(0b) ", %0 \n\t"
1386 "lea " LOCAL_MANGLE(1b) ", %1 \n\t"
1387 "lea " LOCAL_MANGLE(2b) ", %2 \n\t"
1392 "lea " LOCAL_MANGLE(9b) ", %3 \n\t"
1396 :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
1397 "=r" (fragmentLengthB)
1400 xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1403 for (i=0; i<dstW/numSplits; i++)
1410 int b=((xpos+xInc)>>16) - xx;
1411 int c=((xpos+xInc*2)>>16) - xx;
1412 int d=((xpos+xInc*3)>>16) - xx;
1414 filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
1415 filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
1416 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
1417 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
1422 int maxShift= 3-(d+1);
1425 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
1427 funnyCode[fragmentPos + imm8OfPShufW1B]=
1428 (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
1429 funnyCode[fragmentPos + imm8OfPShufW2B]=
1430 a | (b<<2) | (c<<4) | (d<<6);
1432 if (i+3>=dstW) shift=maxShift; //avoid overread
1433 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
1435 if (shift && i>=shift)
1437 funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
1438 funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
1439 filterPos[i/2]-=shift;
1442 fragmentPos+= fragmentLengthB;
1449 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
1451 funnyCode[fragmentPos + imm8OfPShufW1A]=
1452 funnyCode[fragmentPos + imm8OfPShufW2A]=
1453 a | (b<<2) | (c<<4) | (d<<6);
1455 if (i+4>=dstW) shift=maxShift; //avoid overread
1456 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
1458 if (shift && i>=shift)
1460 funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
1461 funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
1462 filterPos[i/2]-=shift;
1465 fragmentPos+= fragmentLengthA;
1468 funnyCode[fragmentPos]= RET;
1472 filterPos[i/2]= xpos>>16; // needed to jump to the next part
1474 #endif /* COMPILE_MMX2 */
1476 static void globalInit(void){
1477 // generating tables:
1479 for (i=0; i<768; i++){
1480 int c= av_clip_uint8(i-256);
1485 static SwsFunc getSwsFunc(int flags){
1487 #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)
1488 #if defined(ARCH_X86)
1489 // ordered per speed fastest first
1490 if (flags & SWS_CPU_CAPS_MMX2)
1491 return swScale_MMX2;
1492 else if (flags & SWS_CPU_CAPS_3DNOW)
1493 return swScale_3DNow;
1494 else if (flags & SWS_CPU_CAPS_MMX)
1501 if (flags & SWS_CPU_CAPS_ALTIVEC)
1502 return swScale_altivec;
1507 #endif /* defined(ARCH_X86) */
1508 #else //RUNTIME_CPUDETECT
1510 return swScale_MMX2;
1511 #elif defined (HAVE_3DNOW)
1512 return swScale_3DNow;
1513 #elif defined (HAVE_MMX)
1515 #elif defined (HAVE_ALTIVEC)
1516 return swScale_altivec;
1520 #endif //!RUNTIME_CPUDETECT
1523 static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1524 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1525 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1527 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1528 memcpy(dst, src[0], srcSliceH*dstStride[0]);
1532 uint8_t *srcPtr= src[0];
1533 uint8_t *dstPtr= dst;
1534 for (i=0; i<srcSliceH; i++)
1536 memcpy(dstPtr, srcPtr, c->srcW);
1537 srcPtr+= srcStride[0];
1538 dstPtr+= dstStride[0];
1541 dst = dstParam[1] + dstStride[1]*srcSliceY/2;
1542 if (c->dstFormat == PIX_FMT_NV12)
1543 interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);
1545 interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);
1550 static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1551 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1552 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1554 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1559 static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1560 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1561 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1563 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1568 /* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */
1569 static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1570 int srcSliceH, uint8_t* dst[], int dstStride[]){
1571 const int srcFormat= c->srcFormat;
1572 const int dstFormat= c->dstFormat;
1573 const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;
1574 const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;
1575 const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1576 const int dstId= fmt_depth(dstFormat) >> 2;
1577 void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
1580 if ( (isBGR(srcFormat) && isBGR(dstFormat))
1581 || (isRGB(srcFormat) && isRGB(dstFormat))){
1582 switch(srcId | (dstId<<4)){
1583 case 0x34: conv= rgb16to15; break;
1584 case 0x36: conv= rgb24to15; break;
1585 case 0x38: conv= rgb32to15; break;
1586 case 0x43: conv= rgb15to16; break;
1587 case 0x46: conv= rgb24to16; break;
1588 case 0x48: conv= rgb32to16; break;
1589 case 0x63: conv= rgb15to24; break;
1590 case 0x64: conv= rgb16to24; break;
1591 case 0x68: conv= rgb32to24; break;
1592 case 0x83: conv= rgb15to32; break;
1593 case 0x84: conv= rgb16to32; break;
1594 case 0x86: conv= rgb24to32; break;
1595 default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1596 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1598 }else if ( (isBGR(srcFormat) && isRGB(dstFormat))
1599 || (isRGB(srcFormat) && isBGR(dstFormat))){
1600 switch(srcId | (dstId<<4)){
1601 case 0x33: conv= rgb15tobgr15; break;
1602 case 0x34: conv= rgb16tobgr15; break;
1603 case 0x36: conv= rgb24tobgr15; break;
1604 case 0x38: conv= rgb32tobgr15; break;
1605 case 0x43: conv= rgb15tobgr16; break;
1606 case 0x44: conv= rgb16tobgr16; break;
1607 case 0x46: conv= rgb24tobgr16; break;
1608 case 0x48: conv= rgb32tobgr16; break;
1609 case 0x63: conv= rgb15tobgr24; break;
1610 case 0x64: conv= rgb16tobgr24; break;
1611 case 0x66: conv= rgb24tobgr24; break;
1612 case 0x68: conv= rgb32tobgr24; break;
1613 case 0x83: conv= rgb15tobgr32; break;
1614 case 0x84: conv= rgb16tobgr32; break;
1615 case 0x86: conv= rgb24tobgr32; break;
1616 case 0x88: conv= rgb32tobgr32; break;
1617 default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1618 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1621 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1622 sws_format_name(srcFormat), sws_format_name(dstFormat));
1627 if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
1628 conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1632 uint8_t *srcPtr= src[0];
1633 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1635 for (i=0; i<srcSliceH; i++)
1637 conv(srcPtr, dstPtr, c->srcW*srcBpp);
1638 srcPtr+= srcStride[0];
1639 dstPtr+= dstStride[0];
1646 static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1647 int srcSliceH, uint8_t* dst[], int dstStride[]){
1651 dst[0]+ srcSliceY *dstStride[0],
1652 dst[1]+(srcSliceY>>1)*dstStride[1],
1653 dst[2]+(srcSliceY>>1)*dstStride[2],
1655 dstStride[0], dstStride[1], srcStride[0]);
1659 static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1660 int srcSliceH, uint8_t* dst[], int dstStride[]){
1664 if (srcStride[0]==dstStride[0] && srcStride[0] > 0)
1665 memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1667 uint8_t *srcPtr= src[0];
1668 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1670 for (i=0; i<srcSliceH; i++)
1672 memcpy(dstPtr, srcPtr, c->srcW);
1673 srcPtr+= srcStride[0];
1674 dstPtr+= dstStride[0];
1678 if (c->dstFormat==PIX_FMT_YUV420P){
1679 planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
1680 planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
1682 planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
1683 planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
1688 /* unscaled copy like stuff (assumes nearly identical formats) */
1689 static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1690 int srcSliceH, uint8_t* dst[], int dstStride[])
1692 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1693 memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1697 uint8_t *srcPtr= src[0];
1698 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1701 /* universal length finder */
1702 while(length+c->srcW <= FFABS(dstStride[0])
1703 && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
1706 for (i=0; i<srcSliceH; i++)
1708 memcpy(dstPtr, srcPtr, length);
1709 srcPtr+= srcStride[0];
1710 dstPtr+= dstStride[0];
1716 static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1717 int srcSliceH, uint8_t* dst[], int dstStride[])
1720 for (plane=0; plane<3; plane++)
1722 int length= plane==0 ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
1723 int y= plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1724 int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1726 if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
1728 if (!isGray(c->dstFormat))
1729 memset(dst[plane], 128, dstStride[plane]*height);
1733 if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
1734 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1738 uint8_t *srcPtr= src[plane];
1739 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1740 for (i=0; i<height; i++)
1742 memcpy(dstPtr, srcPtr, length);
1743 srcPtr+= srcStride[plane];
1744 dstPtr+= dstStride[plane];
1752 static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1753 int srcSliceH, uint8_t* dst[], int dstStride[]){
1755 int length= c->srcW;
1757 int height= srcSliceH;
1759 uint8_t *srcPtr= src[0];
1760 uint8_t *dstPtr= dst[0] + dstStride[0]*y;
1762 if (!isGray(c->dstFormat)){
1763 int height= -((-srcSliceH)>>c->chrDstVSubSample);
1764 memset(dst[1], 128, dstStride[1]*height);
1765 memset(dst[2], 128, dstStride[2]*height);
1767 if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;
1768 for (i=0; i<height; i++)
1770 for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
1771 srcPtr+= srcStride[0];
1772 dstPtr+= dstStride[0];
1777 static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1778 int srcSliceH, uint8_t* dst[], int dstStride[]){
1780 int length= c->srcW;
1782 int height= srcSliceH;
1784 uint8_t *srcPtr= src[0];
1785 uint8_t *dstPtr= dst[0] + dstStride[0]*y;
1786 for (i=0; i<height; i++)
1788 for (j=0; j<length; j++)
1790 dstPtr[j<<1] = srcPtr[j];
1791 dstPtr[(j<<1)+1] = srcPtr[j];
1793 srcPtr+= srcStride[0];
1794 dstPtr+= dstStride[0];
1799 static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1800 int srcSliceH, uint8_t* dst[], int dstStride[]){
1802 int length= c->srcW;
1804 int height= srcSliceH;
1806 uint16_t *srcPtr= (uint16_t*)src[0];
1807 uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);
1808 for (i=0; i<height; i++)
1810 for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);
1811 srcPtr+= srcStride[0]/2;
1812 dstPtr+= dstStride[0]/2;
1818 static void getSubSampleFactors(int *h, int *v, int format){
1820 case PIX_FMT_UYVY422:
1821 case PIX_FMT_YUYV422:
1825 case PIX_FMT_YUV420P:
1826 case PIX_FMT_YUVA420P:
1827 case PIX_FMT_GRAY16BE:
1828 case PIX_FMT_GRAY16LE:
1829 case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented
1835 case PIX_FMT_YUV440P:
1839 case PIX_FMT_YUV410P:
1843 case PIX_FMT_YUV444P:
1847 case PIX_FMT_YUV422P:
1851 case PIX_FMT_YUV411P:
1862 static uint16_t roundToInt16(int64_t f){
1863 int r= (f + (1<<15))>>16;
1864 if (r<-0x7FFF) return 0x8000;
1865 else if (r> 0x7FFF) return 0x7FFF;
1870 * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]
1871 * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235
1872 * @return -1 if not supported
1874 int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){
1875 int64_t crv = inv_table[0];
1876 int64_t cbu = inv_table[1];
1877 int64_t cgu = -inv_table[2];
1878 int64_t cgv = -inv_table[3];
1882 if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1883 memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
1884 memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
1886 c->brightness= brightness;
1887 c->contrast = contrast;
1888 c->saturation= saturation;
1889 c->srcRange = srcRange;
1890 c->dstRange = dstRange;
1892 c->uOffset= 0x0400040004000400LL;
1893 c->vOffset= 0x0400040004000400LL;
1899 crv= (crv*224) / 255;
1900 cbu= (cbu*224) / 255;
1901 cgu= (cgu*224) / 255;
1902 cgv= (cgv*224) / 255;
1905 cy = (cy *contrast )>>16;
1906 crv= (crv*contrast * saturation)>>32;
1907 cbu= (cbu*contrast * saturation)>>32;
1908 cgu= (cgu*contrast * saturation)>>32;
1909 cgv= (cgv*contrast * saturation)>>32;
1911 oy -= 256*brightness;
1913 c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
1914 c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
1915 c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
1916 c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
1917 c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
1918 c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
1920 yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
1923 #ifdef COMPILE_ALTIVEC
1924 if (c->flags & SWS_CPU_CAPS_ALTIVEC)
1925 yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);
1931 * @return -1 if not supported
1933 int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){
1934 if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1936 *inv_table = c->srcColorspaceTable;
1937 *table = c->dstColorspaceTable;
1938 *srcRange = c->srcRange;
1939 *dstRange = c->dstRange;
1940 *brightness= c->brightness;
1941 *contrast = c->contrast;
1942 *saturation= c->saturation;
1947 static int handle_jpeg(int *format)
1950 case PIX_FMT_YUVJ420P:
1951 *format = PIX_FMT_YUV420P;
1953 case PIX_FMT_YUVJ422P:
1954 *format = PIX_FMT_YUV422P;
1956 case PIX_FMT_YUVJ444P:
1957 *format = PIX_FMT_YUV444P;
1959 case PIX_FMT_YUVJ440P:
1960 *format = PIX_FMT_YUV440P;
1967 SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
1968 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){
1972 int usesVFilter, usesHFilter;
1973 int unscaled, needsDither;
1974 int srcRange, dstRange;
1975 SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
1976 #if defined(ARCH_X86)
1977 if (flags & SWS_CPU_CAPS_MMX)
1978 asm volatile("emms\n\t"::: "memory");
1981 #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off
1982 flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
1984 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
1985 #elif defined (HAVE_3DNOW)
1986 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
1987 #elif defined (HAVE_MMX)
1988 flags |= SWS_CPU_CAPS_MMX;
1989 #elif defined (HAVE_ALTIVEC)
1990 flags |= SWS_CPU_CAPS_ALTIVEC;
1991 #elif defined (ARCH_BFIN)
1992 flags |= SWS_CPU_CAPS_BFIN;
1994 #endif /* RUNTIME_CPUDETECT */
1995 if (clip_table[512] != 255) globalInit();
1996 if (!rgb15to16) sws_rgb2rgb_init(flags);
1998 unscaled = (srcW == dstW && srcH == dstH);
1999 needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
2000 && (fmt_depth(dstFormat))<24
2001 && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
2003 srcRange = handle_jpeg(&srcFormat);
2004 dstRange = handle_jpeg(&dstFormat);
2006 if (!isSupportedIn(srcFormat))
2008 av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));
2011 if (!isSupportedOut(dstFormat))
2013 av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));
2018 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
2020 av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
2021 srcW, srcH, dstW, dstH);
2024 if(srcW > VOFW || dstW > VOFW){
2025 av_log(NULL, AV_LOG_ERROR, "swScaler: Compile time max width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");
2029 if (!dstFilter) dstFilter= &dummyFilter;
2030 if (!srcFilter) srcFilter= &dummyFilter;
2032 c= av_mallocz(sizeof(SwsContext));
2034 c->av_class = &sws_context_class;
2039 c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
2040 c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
2042 c->dstFormat= dstFormat;
2043 c->srcFormat= srcFormat;
2044 c->vRounder= 4* 0x0001000100010001ULL;
2046 usesHFilter= usesVFilter= 0;
2047 if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;
2048 if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;
2049 if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;
2050 if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;
2051 if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;
2052 if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;
2053 if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;
2054 if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;
2056 getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
2057 getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
2059 // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
2060 if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
2062 // drop some chroma lines if the user wants it
2063 c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
2064 c->chrSrcVSubSample+= c->vChrDrop;
2066 // drop every 2. pixel for chroma calculation unless user wants full chroma
2067 if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)
2068 && srcFormat!=PIX_FMT_RGB8 && srcFormat!=PIX_FMT_BGR8
2069 && srcFormat!=PIX_FMT_RGB4 && srcFormat!=PIX_FMT_BGR4
2070 && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE)
2071 c->chrSrcHSubSample=1;
2074 c->param[0] = param[0];
2075 c->param[1] = param[1];
2078 c->param[1] = SWS_PARAM_DEFAULT;
2081 c->chrIntHSubSample= c->chrDstHSubSample;
2082 c->chrIntVSubSample= c->chrSrcVSubSample;
2084 // Note the -((-x)>>y) is so that we always round toward +inf.
2085 c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
2086 c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
2087 c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
2088 c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
2090 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);
2092 /* unscaled special Cases */
2093 if (unscaled && !usesHFilter && !usesVFilter)
2096 if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))
2098 c->swScale= PlanarToNV12Wrapper;
2102 if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat)))
2104 c->swScale= yuv2rgb_get_func_ptr(c);
2108 if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P)
2110 c->swScale= yvu9toyv12Wrapper;
2114 if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P)
2115 c->swScale= bgr24toyv12Wrapper;
2117 /* rgb/bgr -> rgb/bgr (no dither needed forms) */
2118 if ( (isBGR(srcFormat) || isRGB(srcFormat))
2119 && (isBGR(dstFormat) || isRGB(dstFormat))
2120 && srcFormat != PIX_FMT_BGR8 && dstFormat != PIX_FMT_BGR8
2121 && srcFormat != PIX_FMT_RGB8 && dstFormat != PIX_FMT_RGB8
2122 && srcFormat != PIX_FMT_BGR4 && dstFormat != PIX_FMT_BGR4
2123 && srcFormat != PIX_FMT_RGB4 && dstFormat != PIX_FMT_RGB4
2124 && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
2125 && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
2126 && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
2128 c->swScale= rgb2rgbWrapper;
2130 /* LQ converters if -sws 0 or -sws 4*/
2131 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
2132 /* rgb/bgr -> rgb/bgr (dither needed forms) */
2133 if ( (isBGR(srcFormat) || isRGB(srcFormat))
2134 && (isBGR(dstFormat) || isRGB(dstFormat))
2136 c->swScale= rgb2rgbWrapper;
2139 if (srcFormat == PIX_FMT_YUV420P &&
2140 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422))
2142 if (dstFormat == PIX_FMT_YUYV422)
2143 c->swScale= PlanarToYuy2Wrapper;
2145 c->swScale= PlanarToUyvyWrapper;
2149 #ifdef COMPILE_ALTIVEC
2150 if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
2151 ((srcFormat == PIX_FMT_YUV420P &&
2152 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422)))) {
2153 // unscaled YV12 -> packed YUV, we want speed
2154 if (dstFormat == PIX_FMT_YUYV422)
2155 c->swScale= yv12toyuy2_unscaled_altivec;
2157 c->swScale= yv12touyvy_unscaled_altivec;
2162 if ( srcFormat == dstFormat
2163 || (isPlanarYUV(srcFormat) && isGray(dstFormat))
2164 || (isPlanarYUV(dstFormat) && isGray(srcFormat)))
2166 if (isPacked(c->srcFormat))
2167 c->swScale= packedCopy;
2168 else /* Planar YUV or gray */
2169 c->swScale= planarCopy;
2172 /* gray16{le,be} conversions */
2173 if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))
2175 c->swScale= gray16togray;
2177 if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))
2179 c->swScale= graytogray16;
2181 if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))
2183 c->swScale= gray16swap;
2187 if (flags & SWS_CPU_CAPS_BFIN)
2188 ff_bfin_get_unscaled_swscale (c);
2192 if (flags&SWS_PRINT_INFO)
2193 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",
2194 sws_format_name(srcFormat), sws_format_name(dstFormat));
2199 if (flags & SWS_CPU_CAPS_MMX2)
2201 c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
2202 if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
2204 if (flags&SWS_PRINT_INFO)
2205 av_log(c, AV_LOG_INFO, "output Width is not a multiple of 32 -> no MMX2 scaler\n");
2207 if (usesHFilter) c->canMMX2BeUsed=0;
2212 c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
2213 c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
2215 // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
2216 // but only for the FAST_BILINEAR mode otherwise do correct scaling
2217 // n-2 is the last chrominance sample available
2218 // this is not perfect, but no one should notice the difference, the more correct variant
2219 // would be like the vertical one, but that would require some special code for the
2220 // first and last pixel
2221 if (flags&SWS_FAST_BILINEAR)
2223 if (c->canMMX2BeUsed)
2228 //we don't use the x86asm scaler if mmx is available
2229 else if (flags & SWS_CPU_CAPS_MMX)
2231 c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
2232 c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
2236 /* precalculate horizontal scaler filter coefficients */
2238 const int filterAlign=
2239 (flags & SWS_CPU_CAPS_MMX) ? 4 :
2240 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2243 initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
2244 srcW , dstW, filterAlign, 1<<14,
2245 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2246 srcFilter->lumH, dstFilter->lumH, c->param);
2247 initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
2248 c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
2249 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2250 srcFilter->chrH, dstFilter->chrH, c->param);
2252 #define MAX_FUNNY_CODE_SIZE 10000
2253 #if defined(COMPILE_MMX2)
2254 // can't downscale !!!
2255 if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
2257 #ifdef MAP_ANONYMOUS
2258 c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2259 c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2261 c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2262 c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2265 c->lumMmx2Filter = av_malloc((dstW /8+8)*sizeof(int16_t));
2266 c->chrMmx2Filter = av_malloc((c->chrDstW /4+8)*sizeof(int16_t));
2267 c->lumMmx2FilterPos= av_malloc((dstW /2/8+8)*sizeof(int32_t));
2268 c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));
2270 initMMX2HScaler( dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
2271 initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
2273 #endif /* defined(COMPILE_MMX2) */
2274 } // Init Horizontal stuff
2278 /* precalculate vertical scaler filter coefficients */
2280 const int filterAlign=
2281 (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :
2282 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2285 initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
2286 srcH , dstH, filterAlign, (1<<12)-4,
2287 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2288 srcFilter->lumV, dstFilter->lumV, c->param);
2289 initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
2290 c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,
2291 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2292 srcFilter->chrV, dstFilter->chrV, c->param);
2295 c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
2296 c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);
2298 for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
2300 short *p = (short *)&c->vYCoeffsBank[i];
2302 p[j] = c->vLumFilter[i];
2305 for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {
2307 short *p = (short *)&c->vCCoeffsBank[i];
2309 p[j] = c->vChrFilter[i];
2314 // Calculate Buffer Sizes so that they won't run out while handling these damn slices
2315 c->vLumBufSize= c->vLumFilterSize;
2316 c->vChrBufSize= c->vChrFilterSize;
2317 for (i=0; i<dstH; i++)
2319 int chrI= i*c->chrDstH / dstH;
2320 int nextSlice= FFMAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
2321 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
2323 nextSlice>>= c->chrSrcVSubSample;
2324 nextSlice<<= c->chrSrcVSubSample;
2325 if (c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
2326 c->vLumBufSize= nextSlice - c->vLumFilterPos[i];
2327 if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
2328 c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
2331 // allocate pixbufs (we use dynamic allocation because otherwise we would need to
2332 c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));
2333 c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));
2334 //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)
2335 /* align at 16 bytes for AltiVec */
2336 for (i=0; i<c->vLumBufSize; i++)
2337 c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);
2338 for (i=0; i<c->vChrBufSize; i++)
2339 c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);
2341 //try to avoid drawing green stuff between the right end and the stride end
2342 for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);
2344 assert(2*VOFW == VOF);
2346 assert(c->chrDstH <= dstH);
2348 if (flags&SWS_PRINT_INFO)
2351 const char *dither= " dithered";
2353 const char *dither= "";
2355 if (flags&SWS_FAST_BILINEAR)
2356 av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");
2357 else if (flags&SWS_BILINEAR)
2358 av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");
2359 else if (flags&SWS_BICUBIC)
2360 av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");
2361 else if (flags&SWS_X)
2362 av_log(c, AV_LOG_INFO, "Experimental scaler, ");
2363 else if (flags&SWS_POINT)
2364 av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");
2365 else if (flags&SWS_AREA)
2366 av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");
2367 else if (flags&SWS_BICUBLIN)
2368 av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");
2369 else if (flags&SWS_GAUSS)
2370 av_log(c, AV_LOG_INFO, "Gaussian scaler, ");
2371 else if (flags&SWS_SINC)
2372 av_log(c, AV_LOG_INFO, "Sinc scaler, ");
2373 else if (flags&SWS_LANCZOS)
2374 av_log(c, AV_LOG_INFO, "Lanczos scaler, ");
2375 else if (flags&SWS_SPLINE)
2376 av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");
2378 av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");
2380 if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)
2381 av_log(c, AV_LOG_INFO, "from %s to%s %s ",
2382 sws_format_name(srcFormat), dither, sws_format_name(dstFormat));
2384 av_log(c, AV_LOG_INFO, "from %s to %s ",
2385 sws_format_name(srcFormat), sws_format_name(dstFormat));
2387 if (flags & SWS_CPU_CAPS_MMX2)
2388 av_log(c, AV_LOG_INFO, "using MMX2\n");
2389 else if (flags & SWS_CPU_CAPS_3DNOW)
2390 av_log(c, AV_LOG_INFO, "using 3DNOW\n");
2391 else if (flags & SWS_CPU_CAPS_MMX)
2392 av_log(c, AV_LOG_INFO, "using MMX\n");
2393 else if (flags & SWS_CPU_CAPS_ALTIVEC)
2394 av_log(c, AV_LOG_INFO, "using AltiVec\n");
2396 av_log(c, AV_LOG_INFO, "using C\n");
2399 if (flags & SWS_PRINT_INFO)
2401 if (flags & SWS_CPU_CAPS_MMX)
2403 if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
2404 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
2407 if (c->hLumFilterSize==4)
2408 av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");
2409 else if (c->hLumFilterSize==8)
2410 av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");
2412 av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");
2414 if (c->hChrFilterSize==4)
2415 av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");
2416 else if (c->hChrFilterSize==8)
2417 av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");
2419 av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");
2424 #if defined(ARCH_X86)
2425 av_log(c, AV_LOG_VERBOSE, "using X86-Asm scaler for horizontal scaling\n");
2427 if (flags & SWS_FAST_BILINEAR)
2428 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");
2430 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");
2433 if (isPlanarYUV(dstFormat))
2435 if (c->vLumFilterSize==1)
2436 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2438 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2442 if (c->vLumFilterSize==1 && c->vChrFilterSize==2)
2443 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
2444 " 2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2445 else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)
2446 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2448 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2451 if (dstFormat==PIX_FMT_BGR24)
2452 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 Converter\n",
2453 (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
2454 else if (dstFormat==PIX_FMT_RGB32)
2455 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2456 else if (dstFormat==PIX_FMT_BGR565)
2457 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2458 else if (dstFormat==PIX_FMT_BGR555)
2459 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2461 av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
2463 if (flags & SWS_PRINT_INFO)
2465 av_log(c, AV_LOG_DEBUG, "Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2466 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
2467 av_log(c, AV_LOG_DEBUG, "Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2468 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
2471 c->swScale= getSwsFunc(flags);
2476 * swscale wrapper, so we don't need to export the SwsContext.
2477 * assumes planar YUV to be in YUV order instead of YVU
2479 int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2480 int srcSliceH, uint8_t* dst[], int dstStride[]){
2482 uint8_t* src2[4]= {src[0], src[1], src[2]};
2484 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
2485 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
2488 if (c->sliceDir == 0) {
2489 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
2492 if (c->srcFormat == PIX_FMT_PAL8){
2493 for (i=0; i<256; i++){
2494 int p= ((uint32_t*)(src[1]))[i];
2495 int r= (p>>16)&0xFF;
2496 int g= (p>> 8)&0xFF;
2498 int y= av_clip_uint8(((RY*r + GY*g + BY*b)>>RGB2YUV_SHIFT) + 16 );
2499 int u= av_clip_uint8(((RU*r + GU*g + BU*b)>>RGB2YUV_SHIFT) + 128);
2500 int v= av_clip_uint8(((RV*r + GV*g + BV*b)>>RGB2YUV_SHIFT) + 128);
2501 pal[i]= y + (u<<8) + (v<<16);
2503 src2[1]= (uint8_t*)pal;
2506 // copy strides, so they can safely be modified
2507 if (c->sliceDir == 1) {
2508 // slices go from top to bottom
2509 int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};
2510 int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};
2511 return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
2513 // slices go from bottom to top => we flip the image internally
2514 uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],
2515 dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],
2516 dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};
2517 int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};
2518 int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};
2520 src2[0] += (srcSliceH-1)*srcStride[0];
2521 if (c->srcFormat != PIX_FMT_PAL8)
2522 src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
2523 src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
2525 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
2530 * swscale wrapper, so we don't need to export the SwsContext
2532 int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2533 int srcSliceH, uint8_t* dst[], int dstStride[]){
2534 return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
2537 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2538 float lumaSharpen, float chromaSharpen,
2539 float chromaHShift, float chromaVShift,
2542 SwsFilter *filter= av_malloc(sizeof(SwsFilter));
2544 if (lumaGBlur!=0.0){
2545 filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
2546 filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
2548 filter->lumH= sws_getIdentityVec();
2549 filter->lumV= sws_getIdentityVec();
2552 if (chromaGBlur!=0.0){
2553 filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
2554 filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
2556 filter->chrH= sws_getIdentityVec();
2557 filter->chrV= sws_getIdentityVec();
2560 if (chromaSharpen!=0.0){
2561 SwsVector *id= sws_getIdentityVec();
2562 sws_scaleVec(filter->chrH, -chromaSharpen);
2563 sws_scaleVec(filter->chrV, -chromaSharpen);
2564 sws_addVec(filter->chrH, id);
2565 sws_addVec(filter->chrV, id);
2569 if (lumaSharpen!=0.0){
2570 SwsVector *id= sws_getIdentityVec();
2571 sws_scaleVec(filter->lumH, -lumaSharpen);
2572 sws_scaleVec(filter->lumV, -lumaSharpen);
2573 sws_addVec(filter->lumH, id);
2574 sws_addVec(filter->lumV, id);
2578 if (chromaHShift != 0.0)
2579 sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
2581 if (chromaVShift != 0.0)
2582 sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
2584 sws_normalizeVec(filter->chrH, 1.0);
2585 sws_normalizeVec(filter->chrV, 1.0);
2586 sws_normalizeVec(filter->lumH, 1.0);
2587 sws_normalizeVec(filter->lumV, 1.0);
2589 if (verbose) sws_printVec(filter->chrH);
2590 if (verbose) sws_printVec(filter->lumH);
2596 * returns a normalized gaussian curve used to filter stuff
2597 * quality=3 is high quality, lowwer is lowwer quality
2599 SwsVector *sws_getGaussianVec(double variance, double quality){
2600 const int length= (int)(variance*quality + 0.5) | 1;
2602 double *coeff= av_malloc(length*sizeof(double));
2603 double middle= (length-1)*0.5;
2604 SwsVector *vec= av_malloc(sizeof(SwsVector));
2607 vec->length= length;
2609 for (i=0; i<length; i++)
2611 double dist= i-middle;
2612 coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);
2615 sws_normalizeVec(vec, 1.0);
2620 SwsVector *sws_getConstVec(double c, int length){
2622 double *coeff= av_malloc(length*sizeof(double));
2623 SwsVector *vec= av_malloc(sizeof(SwsVector));
2626 vec->length= length;
2628 for (i=0; i<length; i++)
2635 SwsVector *sws_getIdentityVec(void){
2636 return sws_getConstVec(1.0, 1);
2639 double sws_dcVec(SwsVector *a){
2643 for (i=0; i<a->length; i++)
2649 void sws_scaleVec(SwsVector *a, double scalar){
2652 for (i=0; i<a->length; i++)
2653 a->coeff[i]*= scalar;
2656 void sws_normalizeVec(SwsVector *a, double height){
2657 sws_scaleVec(a, height/sws_dcVec(a));
2660 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){
2661 int length= a->length + b->length - 1;
2662 double *coeff= av_malloc(length*sizeof(double));
2664 SwsVector *vec= av_malloc(sizeof(SwsVector));
2667 vec->length= length;
2669 for (i=0; i<length; i++) coeff[i]= 0.0;
2671 for (i=0; i<a->length; i++)
2673 for (j=0; j<b->length; j++)
2675 coeff[i+j]+= a->coeff[i]*b->coeff[j];
2682 static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){
2683 int length= FFMAX(a->length, b->length);
2684 double *coeff= av_malloc(length*sizeof(double));
2686 SwsVector *vec= av_malloc(sizeof(SwsVector));
2689 vec->length= length;
2691 for (i=0; i<length; i++) coeff[i]= 0.0;
2693 for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2694 for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
2699 static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){
2700 int length= FFMAX(a->length, b->length);
2701 double *coeff= av_malloc(length*sizeof(double));
2703 SwsVector *vec= av_malloc(sizeof(SwsVector));
2706 vec->length= length;
2708 for (i=0; i<length; i++) coeff[i]= 0.0;
2710 for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2711 for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
2716 /* shift left / or right if "shift" is negative */
2717 static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){
2718 int length= a->length + FFABS(shift)*2;
2719 double *coeff= av_malloc(length*sizeof(double));
2721 SwsVector *vec= av_malloc(sizeof(SwsVector));
2724 vec->length= length;
2726 for (i=0; i<length; i++) coeff[i]= 0.0;
2728 for (i=0; i<a->length; i++)
2730 coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
2736 void sws_shiftVec(SwsVector *a, int shift){
2737 SwsVector *shifted= sws_getShiftedVec(a, shift);
2739 a->coeff= shifted->coeff;
2740 a->length= shifted->length;
2744 void sws_addVec(SwsVector *a, SwsVector *b){
2745 SwsVector *sum= sws_sumVec(a, b);
2747 a->coeff= sum->coeff;
2748 a->length= sum->length;
2752 void sws_subVec(SwsVector *a, SwsVector *b){
2753 SwsVector *diff= sws_diffVec(a, b);
2755 a->coeff= diff->coeff;
2756 a->length= diff->length;
2760 void sws_convVec(SwsVector *a, SwsVector *b){
2761 SwsVector *conv= sws_getConvVec(a, b);
2763 a->coeff= conv->coeff;
2764 a->length= conv->length;
2768 SwsVector *sws_cloneVec(SwsVector *a){
2769 double *coeff= av_malloc(a->length*sizeof(double));
2771 SwsVector *vec= av_malloc(sizeof(SwsVector));
2774 vec->length= a->length;
2776 for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];
2781 void sws_printVec(SwsVector *a){
2787 for (i=0; i<a->length; i++)
2788 if (a->coeff[i]>max) max= a->coeff[i];
2790 for (i=0; i<a->length; i++)
2791 if (a->coeff[i]<min) min= a->coeff[i];
2795 for (i=0; i<a->length; i++)
2797 int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
2798 av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);
2799 for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");
2800 av_log(NULL, AV_LOG_DEBUG, "|\n");
2804 void sws_freeVec(SwsVector *a){
2812 void sws_freeFilter(SwsFilter *filter){
2813 if (!filter) return;
2815 if (filter->lumH) sws_freeVec(filter->lumH);
2816 if (filter->lumV) sws_freeVec(filter->lumV);
2817 if (filter->chrH) sws_freeVec(filter->chrH);
2818 if (filter->chrV) sws_freeVec(filter->chrV);
2823 void sws_freeContext(SwsContext *c){
2829 for (i=0; i<c->vLumBufSize; i++)
2831 av_free(c->lumPixBuf[i]);
2832 c->lumPixBuf[i]=NULL;
2834 av_free(c->lumPixBuf);
2840 for (i=0; i<c->vChrBufSize; i++)
2842 av_free(c->chrPixBuf[i]);
2843 c->chrPixBuf[i]=NULL;
2845 av_free(c->chrPixBuf);
2849 av_free(c->vLumFilter);
2850 c->vLumFilter = NULL;
2851 av_free(c->vChrFilter);
2852 c->vChrFilter = NULL;
2853 av_free(c->hLumFilter);
2854 c->hLumFilter = NULL;
2855 av_free(c->hChrFilter);
2856 c->hChrFilter = NULL;
2858 av_free(c->vYCoeffsBank);
2859 c->vYCoeffsBank = NULL;
2860 av_free(c->vCCoeffsBank);
2861 c->vCCoeffsBank = NULL;
2864 av_free(c->vLumFilterPos);
2865 c->vLumFilterPos = NULL;
2866 av_free(c->vChrFilterPos);
2867 c->vChrFilterPos = NULL;
2868 av_free(c->hLumFilterPos);
2869 c->hLumFilterPos = NULL;
2870 av_free(c->hChrFilterPos);
2871 c->hChrFilterPos = NULL;
2873 #if defined(ARCH_X86) && defined(CONFIG_GPL)
2874 #ifdef MAP_ANONYMOUS
2875 if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);
2876 if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);
2878 av_free(c->funnyYCode);
2879 av_free(c->funnyUVCode);
2882 c->funnyUVCode=NULL;
2883 #endif /* defined(ARCH_X86) */
2885 av_free(c->lumMmx2Filter);
2886 c->lumMmx2Filter=NULL;
2887 av_free(c->chrMmx2Filter);
2888 c->chrMmx2Filter=NULL;
2889 av_free(c->lumMmx2FilterPos);
2890 c->lumMmx2FilterPos=NULL;
2891 av_free(c->chrMmx2FilterPos);
2892 c->chrMmx2FilterPos=NULL;
2893 av_free(c->yuvTable);
2900 * Checks if context is valid or reallocs a new one instead.
2901 * If context is NULL, just calls sws_getContext() to get a new one.
2902 * Otherwise, checks if the parameters are the same already saved in context.
2903 * If that is the case, returns the current context.
2904 * Otherwise, frees context and gets a new one.
2906 * Be warned that srcFilter, dstFilter are not checked, they are
2907 * asumed to remain valid.
2909 struct SwsContext *sws_getCachedContext(struct SwsContext *context,
2910 int srcW, int srcH, int srcFormat,
2911 int dstW, int dstH, int dstFormat, int flags,
2912 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)
2914 static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};
2917 param = default_param;
2920 if (context->srcW != srcW || context->srcH != srcH ||
2921 context->srcFormat != srcFormat ||
2922 context->dstW != dstW || context->dstH != dstH ||
2923 context->dstFormat != dstFormat || context->flags != flags ||
2924 context->param[0] != param[0] || context->param[1] != param[1])
2926 sws_freeContext(context);
2931 return sws_getContext(srcW, srcH, srcFormat,
2932 dstW, dstH, dstFormat, flags,
2933 srcFilter, dstFilter, param);