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 didnt 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"
75 #include "libavcodec/opt.h"
84 //#define WORDS_BIGENDIAN
87 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
89 #define RET 0xC3 //near return opcode for X86
92 #define ASSERT(x) assert(x);
100 #define PI 3.14159265358979323846
103 #define isSupportedIn(x) ( \
104 (x)==PIX_FMT_YUV420P \
105 || (x)==PIX_FMT_YUYV422 \
106 || (x)==PIX_FMT_UYVY422 \
107 || (x)==PIX_FMT_RGB32 \
108 || (x)==PIX_FMT_BGR24 \
109 || (x)==PIX_FMT_BGR565 \
110 || (x)==PIX_FMT_BGR555 \
111 || (x)==PIX_FMT_BGR32 \
112 || (x)==PIX_FMT_RGB24 \
113 || (x)==PIX_FMT_RGB565 \
114 || (x)==PIX_FMT_RGB555 \
115 || (x)==PIX_FMT_GRAY8 \
116 || (x)==PIX_FMT_YUV410P \
117 || (x)==PIX_FMT_GRAY16BE \
118 || (x)==PIX_FMT_GRAY16LE \
119 || (x)==PIX_FMT_YUV444P \
120 || (x)==PIX_FMT_YUV422P \
121 || (x)==PIX_FMT_YUV411P \
122 || (x)==PIX_FMT_PAL8 \
123 || (x)==PIX_FMT_BGR8 \
124 || (x)==PIX_FMT_RGB8 \
125 || (x)==PIX_FMT_BGR4_BYTE \
126 || (x)==PIX_FMT_RGB4_BYTE \
127 || (x)==PIX_FMT_YUV440P \
129 #define isSupportedOut(x) ( \
130 (x)==PIX_FMT_YUV420P \
131 || (x)==PIX_FMT_YUYV422 \
132 || (x)==PIX_FMT_UYVY422 \
133 || (x)==PIX_FMT_YUV444P \
134 || (x)==PIX_FMT_YUV422P \
135 || (x)==PIX_FMT_YUV411P \
138 || (x)==PIX_FMT_NV12 \
139 || (x)==PIX_FMT_NV21 \
140 || (x)==PIX_FMT_GRAY16BE \
141 || (x)==PIX_FMT_GRAY16LE \
142 || (x)==PIX_FMT_GRAY8 \
143 || (x)==PIX_FMT_YUV410P \
145 #define isPacked(x) ( \
147 || (x)==PIX_FMT_YUYV422 \
148 || (x)==PIX_FMT_UYVY422 \
153 #define RGB2YUV_SHIFT 16
154 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
155 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
156 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
157 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
158 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
159 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
160 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
161 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
162 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
164 extern const int32_t Inverse_Table_6_9[8][4];
168 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
171 more intelligent misalignment avoidance for the horizontal scaler
172 write special vertical cubic upscale version
173 Optimize C code (yv12 / minmax)
174 add support for packed pixel yuv input & output
175 add support for Y8 output
176 optimize bgr24 & bgr32
177 add BGR4 output support
178 write special BGR->BGR scaler
181 #if defined(ARCH_X86) && defined (CONFIG_GPL)
182 static uint64_t attribute_used __attribute__((aligned(8))) bF8= 0xF8F8F8F8F8F8F8F8LL;
183 static uint64_t attribute_used __attribute__((aligned(8))) bFC= 0xFCFCFCFCFCFCFCFCLL;
184 static uint64_t __attribute__((aligned(8))) w10= 0x0010001000100010LL;
185 static uint64_t attribute_used __attribute__((aligned(8))) w02= 0x0002000200020002LL;
186 static uint64_t attribute_used __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
187 static uint64_t attribute_used __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
188 static uint64_t attribute_used __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
189 static uint64_t attribute_used __attribute__((aligned(8))) bm01010101=0x00FF00FF00FF00FFLL;
191 static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
192 static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
193 static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
194 static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
196 static uint64_t __attribute__((aligned(8))) dither4[2]={
197 0x0103010301030103LL,
198 0x0200020002000200LL,};
200 static uint64_t __attribute__((aligned(8))) dither8[2]={
201 0x0602060206020602LL,
202 0x0004000400040004LL,};
204 static uint64_t __attribute__((aligned(8))) b16Mask= 0x001F001F001F001FLL;
205 static uint64_t attribute_used __attribute__((aligned(8))) g16Mask= 0x07E007E007E007E0LL;
206 static uint64_t attribute_used __attribute__((aligned(8))) r16Mask= 0xF800F800F800F800LL;
207 static uint64_t __attribute__((aligned(8))) b15Mask= 0x001F001F001F001FLL;
208 static uint64_t attribute_used __attribute__((aligned(8))) g15Mask= 0x03E003E003E003E0LL;
209 static uint64_t attribute_used __attribute__((aligned(8))) r15Mask= 0x7C007C007C007C00LL;
211 static uint64_t attribute_used __attribute__((aligned(8))) M24A= 0x00FF0000FF0000FFLL;
212 static uint64_t attribute_used __attribute__((aligned(8))) M24B= 0xFF0000FF0000FF00LL;
213 static uint64_t attribute_used __attribute__((aligned(8))) M24C= 0x0000FF0000FF0000LL;
216 static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
217 static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
218 static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
220 static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
221 static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
222 static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
223 #endif /* FAST_BGR2YV12 */
224 static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
225 static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8))) = 0x8080808080808080ULL;
226 static const uint64_t w1111 attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
227 #endif /* defined(ARCH_X86) */
229 // clipping helper table for C implementations:
230 static unsigned char clip_table[768];
232 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
234 extern const uint8_t dither_2x2_4[2][8];
235 extern const uint8_t dither_2x2_8[2][8];
236 extern const uint8_t dither_8x8_32[8][8];
237 extern const uint8_t dither_8x8_73[8][8];
238 extern const uint8_t dither_8x8_220[8][8];
240 static const char * sws_context_to_name(void * ptr) {
244 #define OFFSET(x) offsetof(SwsContext, x)
246 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
248 static const AVOption options[] = {
249 { "sws_flags", "scaler/cpu flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, VE, "sws_flags" },
250 { "fast_bilinear", "fast bilinear", 0, FF_OPT_TYPE_CONST, SWS_FAST_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },
251 { "bilinear", "bilinear", 0, FF_OPT_TYPE_CONST, SWS_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },
252 { "bicubic", "bicubic", 0, FF_OPT_TYPE_CONST, SWS_BICUBIC, INT_MIN, INT_MAX, VE, "sws_flags" },
253 { "experimental", "experimental", 0, FF_OPT_TYPE_CONST, SWS_X, INT_MIN, INT_MAX, VE, "sws_flags" },
254 { "neighbor", "nearest neighbor", 0, FF_OPT_TYPE_CONST, SWS_POINT, INT_MIN, INT_MAX, VE, "sws_flags" },
255 { "area", "averaging area", 0, FF_OPT_TYPE_CONST, SWS_AREA, INT_MIN, INT_MAX, VE, "sws_flags" },
256 { "bicublin", "luma bicubic, chroma bilinear", 0, FF_OPT_TYPE_CONST, SWS_BICUBLIN, INT_MIN, INT_MAX, VE, "sws_flags" },
257 { "gauss", "gaussian", 0, FF_OPT_TYPE_CONST, SWS_GAUSS, INT_MIN, INT_MAX, VE, "sws_flags" },
258 { "sinc", "sinc", 0, FF_OPT_TYPE_CONST, SWS_SINC, INT_MIN, INT_MAX, VE, "sws_flags" },
259 { "lanczos", "lanczos", 0, FF_OPT_TYPE_CONST, SWS_LANCZOS, INT_MIN, INT_MAX, VE, "sws_flags" },
260 { "spline", "natural bicubic spline", 0, FF_OPT_TYPE_CONST, SWS_SPLINE, INT_MIN, INT_MAX, VE, "sws_flags" },
261 { "print_info", "print info", 0, FF_OPT_TYPE_CONST, SWS_PRINT_INFO, INT_MIN, INT_MAX, VE, "sws_flags" },
262 { "accurate_rnd", "accurate rounding", 0, FF_OPT_TYPE_CONST, SWS_ACCURATE_RND, INT_MIN, INT_MAX, VE, "sws_flags" },
263 { "mmx", "MMX SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX, INT_MIN, INT_MAX, VE, "sws_flags" },
264 { "mmx2", "MMX2 SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX2, INT_MIN, INT_MAX, VE, "sws_flags" },
265 { "3dnow", "3DNOW SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_3DNOW, INT_MIN, INT_MAX, VE, "sws_flags" },
266 { "altivec", "AltiVec SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_ALTIVEC, INT_MIN, INT_MAX, VE, "sws_flags" },
267 { "bfin", "Blackfin SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_BFIN, INT_MIN, INT_MAX, VE, "sws_flags" },
268 { "full_chroma_int", "full chroma interpolation", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INT, INT_MIN, INT_MAX, VE, "sws_flags" },
269 { "full_chroma_inp", "full chroma input", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INP, INT_MIN, INT_MAX, VE, "sws_flags" },
276 static AVClass sws_context_class = { "SWScaler", sws_context_to_name, options };
278 char *sws_format_name(enum PixelFormat format)
281 case PIX_FMT_YUV420P:
283 case PIX_FMT_YUYV422:
289 case PIX_FMT_YUV422P:
291 case PIX_FMT_YUV444P:
295 case PIX_FMT_YUV410P:
297 case PIX_FMT_YUV411P:
303 case PIX_FMT_GRAY16BE:
305 case PIX_FMT_GRAY16LE:
309 case PIX_FMT_MONOWHITE:
311 case PIX_FMT_MONOBLACK:
315 case PIX_FMT_YUVJ420P:
317 case PIX_FMT_YUVJ422P:
319 case PIX_FMT_YUVJ444P:
321 case PIX_FMT_XVMC_MPEG2_MC:
322 return "xvmc_mpeg2_mc";
323 case PIX_FMT_XVMC_MPEG2_IDCT:
324 return "xvmc_mpeg2_idct";
325 case PIX_FMT_UYVY422:
327 case PIX_FMT_UYYVYY411:
329 case PIX_FMT_RGB32_1:
331 case PIX_FMT_BGR32_1:
343 case PIX_FMT_BGR4_BYTE:
349 case PIX_FMT_RGB4_BYTE:
355 case PIX_FMT_YUV440P:
358 return "Unknown format";
362 #if defined(ARCH_X86) && defined (CONFIG_GPL)
363 void in_asm_used_var_warning_killer()
365 volatile int i= bF8+bFC+w10+
366 bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+
367 M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0]+bm01010101;
372 static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
373 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
374 uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
376 //FIXME Optimize (just quickly writen not opti..)
378 for (i=0; i<dstW; i++)
382 for (j=0; j<lumFilterSize; j++)
383 val += lumSrc[j][i] * lumFilter[j];
385 dest[i]= av_clip_uint8(val>>19);
389 for (i=0; i<chrDstW; i++)
394 for (j=0; j<chrFilterSize; j++)
396 u += chrSrc[j][i] * chrFilter[j];
397 v += chrSrc[j][i + 2048] * chrFilter[j];
400 uDest[i]= av_clip_uint8(u>>19);
401 vDest[i]= av_clip_uint8(v>>19);
405 static inline void yuv2nv12XinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
406 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
407 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
409 //FIXME Optimize (just quickly writen not opti..)
411 for (i=0; i<dstW; i++)
415 for (j=0; j<lumFilterSize; j++)
416 val += lumSrc[j][i] * lumFilter[j];
418 dest[i]= av_clip_uint8(val>>19);
424 if (dstFormat == PIX_FMT_NV12)
425 for (i=0; i<chrDstW; i++)
430 for (j=0; j<chrFilterSize; j++)
432 u += chrSrc[j][i] * chrFilter[j];
433 v += chrSrc[j][i + 2048] * chrFilter[j];
436 uDest[2*i]= av_clip_uint8(u>>19);
437 uDest[2*i+1]= av_clip_uint8(v>>19);
440 for (i=0; i<chrDstW; i++)
445 for (j=0; j<chrFilterSize; j++)
447 u += chrSrc[j][i] * chrFilter[j];
448 v += chrSrc[j][i + 2048] * chrFilter[j];
451 uDest[2*i]= av_clip_uint8(v>>19);
452 uDest[2*i+1]= av_clip_uint8(u>>19);
456 #define YSCALE_YUV_2_PACKEDX_C(type) \
457 for (i=0; i<(dstW>>1); i++){\
463 type av_unused *r, *b, *g;\
466 for (j=0; j<lumFilterSize; j++)\
468 Y1 += lumSrc[j][i2] * lumFilter[j];\
469 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
471 for (j=0; j<chrFilterSize; j++)\
473 U += chrSrc[j][i] * chrFilter[j];\
474 V += chrSrc[j][i+2048] * chrFilter[j];\
480 if ((Y1|Y2|U|V)&256)\
482 if (Y1>255) Y1=255; \
483 else if (Y1<0)Y1=0; \
484 if (Y2>255) Y2=255; \
485 else if (Y2<0)Y2=0; \
492 #define YSCALE_YUV_2_RGBX_C(type) \
493 YSCALE_YUV_2_PACKEDX_C(type) \
494 r = (type *)c->table_rV[V]; \
495 g = (type *)(c->table_gU[U] + c->table_gV[V]); \
496 b = (type *)c->table_bU[U]; \
498 #define YSCALE_YUV_2_PACKED2_C \
499 for (i=0; i<(dstW>>1); i++){ \
501 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19; \
502 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19; \
503 int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19; \
504 int V= (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19; \
506 #define YSCALE_YUV_2_RGB2_C(type) \
507 YSCALE_YUV_2_PACKED2_C\
509 r = (type *)c->table_rV[V];\
510 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
511 b = (type *)c->table_bU[U];\
513 #define YSCALE_YUV_2_PACKED1_C \
514 for (i=0; i<(dstW>>1); i++){\
516 int Y1= buf0[i2 ]>>7;\
517 int Y2= buf0[i2+1]>>7;\
518 int U= (uvbuf1[i ])>>7;\
519 int V= (uvbuf1[i+2048])>>7;\
521 #define YSCALE_YUV_2_RGB1_C(type) \
522 YSCALE_YUV_2_PACKED1_C\
524 r = (type *)c->table_rV[V];\
525 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
526 b = (type *)c->table_bU[U];\
528 #define YSCALE_YUV_2_PACKED1B_C \
529 for (i=0; i<(dstW>>1); i++){\
531 int Y1= buf0[i2 ]>>7;\
532 int Y2= buf0[i2+1]>>7;\
533 int U= (uvbuf0[i ] + uvbuf1[i ])>>8;\
534 int V= (uvbuf0[i+2048] + uvbuf1[i+2048])>>8;\
536 #define YSCALE_YUV_2_RGB1B_C(type) \
537 YSCALE_YUV_2_PACKED1B_C\
539 r = (type *)c->table_rV[V];\
540 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
541 b = (type *)c->table_bU[U];\
543 #define YSCALE_YUV_2_ANYRGB_C(func, func2)\
544 switch(c->dstFormat)\
549 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
550 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
555 ((uint8_t*)dest)[0]= r[Y1];\
556 ((uint8_t*)dest)[1]= g[Y1];\
557 ((uint8_t*)dest)[2]= b[Y1];\
558 ((uint8_t*)dest)[3]= r[Y2];\
559 ((uint8_t*)dest)[4]= g[Y2];\
560 ((uint8_t*)dest)[5]= b[Y2];\
566 ((uint8_t*)dest)[0]= b[Y1];\
567 ((uint8_t*)dest)[1]= g[Y1];\
568 ((uint8_t*)dest)[2]= r[Y1];\
569 ((uint8_t*)dest)[3]= b[Y2];\
570 ((uint8_t*)dest)[4]= g[Y2];\
571 ((uint8_t*)dest)[5]= r[Y2];\
575 case PIX_FMT_RGB565:\
576 case PIX_FMT_BGR565:\
578 const int dr1= dither_2x2_8[y&1 ][0];\
579 const int dg1= dither_2x2_4[y&1 ][0];\
580 const int db1= dither_2x2_8[(y&1)^1][0];\
581 const int dr2= dither_2x2_8[y&1 ][1];\
582 const int dg2= dither_2x2_4[y&1 ][1];\
583 const int db2= dither_2x2_8[(y&1)^1][1];\
585 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
586 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
590 case PIX_FMT_RGB555:\
591 case PIX_FMT_BGR555:\
593 const int dr1= dither_2x2_8[y&1 ][0];\
594 const int dg1= dither_2x2_8[y&1 ][1];\
595 const int db1= dither_2x2_8[(y&1)^1][0];\
596 const int dr2= dither_2x2_8[y&1 ][1];\
597 const int dg2= dither_2x2_8[y&1 ][0];\
598 const int db2= dither_2x2_8[(y&1)^1][1];\
600 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
601 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
608 const uint8_t * const d64= dither_8x8_73[y&7];\
609 const uint8_t * const d32= dither_8x8_32[y&7];\
611 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
612 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
619 const uint8_t * const d64= dither_8x8_73 [y&7];\
620 const uint8_t * const d128=dither_8x8_220[y&7];\
622 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
623 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
627 case PIX_FMT_RGB4_BYTE:\
628 case PIX_FMT_BGR4_BYTE:\
630 const uint8_t * const d64= dither_8x8_73 [y&7];\
631 const uint8_t * const d128=dither_8x8_220[y&7];\
633 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
634 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
638 case PIX_FMT_MONOBLACK:\
640 const uint8_t * const d128=dither_8x8_220[y&7];\
641 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
642 for (i=0; i<dstW-7; i+=8){\
644 acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];\
645 acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
646 acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
647 acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
648 acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
649 acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
650 acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
651 acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
652 ((uint8_t*)dest)[0]= acc;\
657 ((uint8_t*)dest)-= dstW>>4;\
661 static int top[1024];\
662 static int last_new[1024][1024];\
663 static int last_in3[1024][1024];\
664 static int drift[1024][1024];\
668 const uint8_t * const d128=dither_8x8_220[y&7];\
673 for (i=dstW>>1; i<dstW; i++){\
674 int in= ((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19);\
675 int in2 = (76309 * (in - 16) + 32768) >> 16;\
676 int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\
677 int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\
678 + (last_new[y][i] - in3)*f/256;\
679 int new= old> 128 ? 255 : 0;\
681 error_new+= FFABS(last_new[y][i] - new);\
682 error_in3+= FFABS(last_in3[y][i] - in3);\
683 f= error_new - error_in3*4;\
688 left= top[i]= old - new;\
689 last_new[y][i]= new;\
690 last_in3[y][i]= in3;\
692 acc+= acc + (new&1);\
694 ((uint8_t*)dest)[0]= acc;\
702 case PIX_FMT_YUYV422:\
704 ((uint8_t*)dest)[2*i2+0]= Y1;\
705 ((uint8_t*)dest)[2*i2+1]= U;\
706 ((uint8_t*)dest)[2*i2+2]= Y2;\
707 ((uint8_t*)dest)[2*i2+3]= V;\
710 case PIX_FMT_UYVY422:\
712 ((uint8_t*)dest)[2*i2+0]= U;\
713 ((uint8_t*)dest)[2*i2+1]= Y1;\
714 ((uint8_t*)dest)[2*i2+2]= V;\
715 ((uint8_t*)dest)[2*i2+3]= Y2;\
721 static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
722 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
723 uint8_t *dest, int dstW, int y)
730 YSCALE_YUV_2_RGBX_C(uint32_t)
731 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
732 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
736 YSCALE_YUV_2_RGBX_C(uint8_t)
737 ((uint8_t*)dest)[0]= r[Y1];
738 ((uint8_t*)dest)[1]= g[Y1];
739 ((uint8_t*)dest)[2]= b[Y1];
740 ((uint8_t*)dest)[3]= r[Y2];
741 ((uint8_t*)dest)[4]= g[Y2];
742 ((uint8_t*)dest)[5]= b[Y2];
747 YSCALE_YUV_2_RGBX_C(uint8_t)
748 ((uint8_t*)dest)[0]= b[Y1];
749 ((uint8_t*)dest)[1]= g[Y1];
750 ((uint8_t*)dest)[2]= r[Y1];
751 ((uint8_t*)dest)[3]= b[Y2];
752 ((uint8_t*)dest)[4]= g[Y2];
753 ((uint8_t*)dest)[5]= r[Y2];
760 const int dr1= dither_2x2_8[y&1 ][0];
761 const int dg1= dither_2x2_4[y&1 ][0];
762 const int db1= dither_2x2_8[(y&1)^1][0];
763 const int dr2= dither_2x2_8[y&1 ][1];
764 const int dg2= dither_2x2_4[y&1 ][1];
765 const int db2= dither_2x2_8[(y&1)^1][1];
766 YSCALE_YUV_2_RGBX_C(uint16_t)
767 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
768 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
775 const int dr1= dither_2x2_8[y&1 ][0];
776 const int dg1= dither_2x2_8[y&1 ][1];
777 const int db1= dither_2x2_8[(y&1)^1][0];
778 const int dr2= dither_2x2_8[y&1 ][1];
779 const int dg2= dither_2x2_8[y&1 ][0];
780 const int db2= dither_2x2_8[(y&1)^1][1];
781 YSCALE_YUV_2_RGBX_C(uint16_t)
782 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
783 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
790 const uint8_t * const d64= dither_8x8_73[y&7];
791 const uint8_t * const d32= dither_8x8_32[y&7];
792 YSCALE_YUV_2_RGBX_C(uint8_t)
793 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
794 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
801 const uint8_t * const d64= dither_8x8_73 [y&7];
802 const uint8_t * const d128=dither_8x8_220[y&7];
803 YSCALE_YUV_2_RGBX_C(uint8_t)
804 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]
805 +((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);
809 case PIX_FMT_RGB4_BYTE:
810 case PIX_FMT_BGR4_BYTE:
812 const uint8_t * const d64= dither_8x8_73 [y&7];
813 const uint8_t * const d128=dither_8x8_220[y&7];
814 YSCALE_YUV_2_RGBX_C(uint8_t)
815 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
816 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
820 case PIX_FMT_MONOBLACK:
822 const uint8_t * const d128=dither_8x8_220[y&7];
823 uint8_t *g= c->table_gU[128] + c->table_gV[128];
825 for (i=0; i<dstW-1; i+=2){
830 for (j=0; j<lumFilterSize; j++)
832 Y1 += lumSrc[j][i] * lumFilter[j];
833 Y2 += lumSrc[j][i+1] * lumFilter[j];
844 acc+= acc + g[Y1+d128[(i+0)&7]];
845 acc+= acc + g[Y2+d128[(i+1)&7]];
847 ((uint8_t*)dest)[0]= acc;
853 case PIX_FMT_YUYV422:
854 YSCALE_YUV_2_PACKEDX_C(void)
855 ((uint8_t*)dest)[2*i2+0]= Y1;
856 ((uint8_t*)dest)[2*i2+1]= U;
857 ((uint8_t*)dest)[2*i2+2]= Y2;
858 ((uint8_t*)dest)[2*i2+3]= V;
861 case PIX_FMT_UYVY422:
862 YSCALE_YUV_2_PACKEDX_C(void)
863 ((uint8_t*)dest)[2*i2+0]= U;
864 ((uint8_t*)dest)[2*i2+1]= Y1;
865 ((uint8_t*)dest)[2*i2+2]= V;
866 ((uint8_t*)dest)[2*i2+3]= Y2;
873 //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
875 #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT) || !defined(CONFIG_GPL)
880 #if (defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
881 #define COMPILE_ALTIVEC
882 #endif //HAVE_ALTIVEC
883 #endif //ARCH_POWERPC
885 #if defined(ARCH_X86)
887 #if ((defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
891 #if (defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
895 #if ((defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
896 #define COMPILE_3DNOW
898 #endif //ARCH_X86 || ARCH_X86_64
909 #define RENAME(a) a ## _C
910 #include "swscale_template.c"
914 #ifdef COMPILE_ALTIVEC
917 #define RENAME(a) a ## _altivec
918 #include "swscale_template.c"
920 #endif //ARCH_POWERPC
922 #if defined(ARCH_X86)
931 #define RENAME(a) a ## _X86
932 #include "swscale_template.c"
940 #define RENAME(a) a ## _MMX
941 #include "swscale_template.c"
950 #define RENAME(a) a ## _MMX2
951 #include "swscale_template.c"
960 #define RENAME(a) a ## _3DNow
961 #include "swscale_template.c"
964 #endif //ARCH_X86 || ARCH_X86_64
966 // minor note: the HAVE_xyz is messed up after that line so don't use it
968 static double getSplineCoeff(double a, double b, double c, double d, double dist)
970 // printf("%f %f %f %f %f\n", a,b,c,d,dist);
971 if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;
972 else return getSplineCoeff( 0.0,
979 static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
980 int srcW, int dstW, int filterAlign, int one, int flags,
981 SwsVector *srcFilter, SwsVector *dstFilter, double param[2])
988 double *filter2=NULL;
989 #if defined(ARCH_X86)
990 if (flags & SWS_CPU_CAPS_MMX)
991 asm volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
994 // Note the +1 is for the MMXscaler which reads over the end
995 *filterPos = av_malloc((dstW+1)*sizeof(int16_t));
997 if (FFABS(xInc - 0x10000) <10) // unscaled
1001 filter= av_malloc(dstW*sizeof(double)*filterSize);
1002 for (i=0; i<dstW*filterSize; i++) filter[i]=0;
1004 for (i=0; i<dstW; i++)
1006 filter[i*filterSize]=1;
1011 else if (flags&SWS_POINT) // lame looking point sampling mode
1016 filter= av_malloc(dstW*sizeof(double)*filterSize);
1018 xDstInSrc= xInc/2 - 0x8000;
1019 for (i=0; i<dstW; i++)
1021 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
1023 (*filterPos)[i]= xx;
1028 else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
1032 if (flags&SWS_BICUBIC) filterSize= 4;
1033 else if (flags&SWS_X ) filterSize= 4;
1034 else filterSize= 2; // SWS_BILINEAR / SWS_AREA
1035 filter= av_malloc(dstW*sizeof(double)*filterSize);
1037 xDstInSrc= xInc/2 - 0x8000;
1038 for (i=0; i<dstW; i++)
1040 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
1043 (*filterPos)[i]= xx;
1044 //Bilinear upscale / linear interpolate / Area averaging
1045 for (j=0; j<filterSize; j++)
1047 double d= FFABS((xx<<16) - xDstInSrc)/(double)(1<<16);
1048 double coeff= 1.0 - d;
1049 if (coeff<0) coeff=0;
1050 filter[i*filterSize + j]= coeff;
1059 double sizeFactor, filterSizeInSrc;
1060 const double xInc1= (double)xInc / (double)(1<<16);
1062 if (flags&SWS_BICUBIC) sizeFactor= 4.0;
1063 else if (flags&SWS_X) sizeFactor= 8.0;
1064 else if (flags&SWS_AREA) sizeFactor= 1.0; //downscale only, for upscale it is bilinear
1065 else if (flags&SWS_GAUSS) sizeFactor= 8.0; // infinite ;)
1066 else if (flags&SWS_LANCZOS) sizeFactor= param[0] != SWS_PARAM_DEFAULT ? 2.0*param[0] : 6.0;
1067 else if (flags&SWS_SINC) sizeFactor= 20.0; // infinite ;)
1068 else if (flags&SWS_SPLINE) sizeFactor= 20.0; // infinite ;)
1069 else if (flags&SWS_BILINEAR) sizeFactor= 2.0;
1071 sizeFactor= 0.0; //GCC warning killer
1075 if (xInc1 <= 1.0) filterSizeInSrc= sizeFactor; // upscale
1076 else filterSizeInSrc= sizeFactor*srcW / (double)dstW;
1078 filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible
1079 if (filterSize > srcW-2) filterSize=srcW-2;
1081 filter= av_malloc(dstW*sizeof(double)*filterSize);
1083 xDstInSrc= xInc1 / 2.0 - 0.5;
1084 for (i=0; i<dstW; i++)
1086 int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);
1088 (*filterPos)[i]= xx;
1089 for (j=0; j<filterSize; j++)
1091 double d= FFABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;
1093 if (flags & SWS_BICUBIC)
1095 double B= param[0] != SWS_PARAM_DEFAULT ? param[0] : 0.0;
1096 double C= param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6;
1099 coeff = (12-9*B-6*C)*d*d*d + (-18+12*B+6*C)*d*d + 6-2*B;
1101 coeff = (-B-6*C)*d*d*d + (6*B+30*C)*d*d + (-12*B-48*C)*d +8*B+24*C;
1105 /* else if (flags & SWS_X)
1107 double p= param ? param*0.01 : 0.3;
1108 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1109 coeff*= pow(2.0, - p*d*d);
1111 else if (flags & SWS_X)
1113 double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
1119 if (coeff<0.0) coeff= -pow(-coeff, A);
1120 else coeff= pow( coeff, A);
1121 coeff= coeff*0.5 + 0.5;
1123 else if (flags & SWS_AREA)
1125 double srcPixelSize= 1.0/xInc1;
1126 if (d + srcPixelSize/2 < 0.5) coeff= 1.0;
1127 else if (d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
1130 else if (flags & SWS_GAUSS)
1132 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1133 coeff = pow(2.0, - p*d*d);
1135 else if (flags & SWS_SINC)
1137 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1139 else if (flags & SWS_LANCZOS)
1141 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1142 coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;
1145 else if (flags & SWS_BILINEAR)
1148 if (coeff<0) coeff=0;
1150 else if (flags & SWS_SPLINE)
1152 double p=-2.196152422706632;
1153 coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);
1156 coeff= 0.0; //GCC warning killer
1160 filter[i*filterSize + j]= coeff;
1167 /* apply src & dst Filter to filter -> filter2
1170 ASSERT(filterSize>0)
1171 filter2Size= filterSize;
1172 if (srcFilter) filter2Size+= srcFilter->length - 1;
1173 if (dstFilter) filter2Size+= dstFilter->length - 1;
1174 ASSERT(filter2Size>0)
1175 filter2= av_malloc(filter2Size*dstW*sizeof(double));
1177 for (i=0; i<dstW; i++)
1180 SwsVector scaleFilter;
1183 scaleFilter.coeff= filter + i*filterSize;
1184 scaleFilter.length= filterSize;
1186 if (srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);
1187 else outVec= &scaleFilter;
1189 ASSERT(outVec->length == filter2Size)
1192 for (j=0; j<outVec->length; j++)
1194 filter2[i*filter2Size + j]= outVec->coeff[j];
1197 (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
1199 if (outVec != &scaleFilter) sws_freeVec(outVec);
1201 av_free(filter); filter=NULL;
1203 /* try to reduce the filter-size (step1 find size and shift left) */
1204 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
1206 for (i=dstW-1; i>=0; i--)
1208 int min= filter2Size;
1212 /* get rid off near zero elements on the left by shifting left */
1213 for (j=0; j<filter2Size; j++)
1216 cutOff += FFABS(filter2[i*filter2Size]);
1218 if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1220 /* preserve monotonicity because the core can't handle the filter otherwise */
1221 if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
1223 // Move filter coeffs left
1224 for (k=1; k<filter2Size; k++)
1225 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
1226 filter2[i*filter2Size + k - 1]= 0.0;
1231 /* count near zeros on the right */
1232 for (j=filter2Size-1; j>0; j--)
1234 cutOff += FFABS(filter2[i*filter2Size + j]);
1236 if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1240 if (min>minFilterSize) minFilterSize= min;
1243 if (flags & SWS_CPU_CAPS_ALTIVEC) {
1244 // we can handle the special case 4,
1245 // so we don't want to go to the full 8
1246 if (minFilterSize < 5)
1249 // we really don't want to waste our time
1250 // doing useless computation, so fall-back on
1251 // the scalar C code for very small filter.
1252 // vectorizing is worth it only if you have
1253 // decent-sized vector.
1254 if (minFilterSize < 3)
1258 if (flags & SWS_CPU_CAPS_MMX) {
1259 // special case for unscaled vertical filtering
1260 if (minFilterSize == 1 && filterAlign == 2)
1264 ASSERT(minFilterSize > 0)
1265 filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
1266 ASSERT(filterSize > 0)
1267 filter= av_malloc(filterSize*dstW*sizeof(double));
1268 if (filterSize >= MAX_FILTER_SIZE)
1270 *outFilterSize= filterSize;
1272 if (flags&SWS_PRINT_INFO)
1273 av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
1274 /* try to reduce the filter-size (step2 reduce it) */
1275 for (i=0; i<dstW; i++)
1279 for (j=0; j<filterSize; j++)
1281 if (j>=filter2Size) filter[i*filterSize + j]= 0.0;
1282 else filter[i*filterSize + j]= filter2[i*filter2Size + j];
1285 av_free(filter2); filter2=NULL;
1288 //FIXME try to align filterpos if possible
1291 for (i=0; i<dstW; i++)
1294 if ((*filterPos)[i] < 0)
1296 // Move filter coeffs left to compensate for filterPos
1297 for (j=1; j<filterSize; j++)
1299 int left= FFMAX(j + (*filterPos)[i], 0);
1300 filter[i*filterSize + left] += filter[i*filterSize + j];
1301 filter[i*filterSize + j]=0;
1306 if ((*filterPos)[i] + filterSize > srcW)
1308 int shift= (*filterPos)[i] + filterSize - srcW;
1309 // Move filter coeffs right to compensate for filterPos
1310 for (j=filterSize-2; j>=0; j--)
1312 int right= FFMIN(j + shift, filterSize-1);
1313 filter[i*filterSize +right] += filter[i*filterSize +j];
1314 filter[i*filterSize +j]=0;
1316 (*filterPos)[i]= srcW - filterSize;
1320 // Note the +1 is for the MMXscaler which reads over the end
1321 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
1322 *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));
1324 /* Normalize & Store in outFilter */
1325 for (i=0; i<dstW; i++)
1332 for (j=0; j<filterSize; j++)
1334 sum+= filter[i*filterSize + j];
1337 for (j=0; j<*outFilterSize; j++)
1339 double v= filter[i*filterSize + j]*scale + error;
1340 int intV= floor(v + 0.5);
1341 (*outFilter)[i*(*outFilterSize) + j]= intV;
1346 (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
1347 for (i=0; i<*outFilterSize; i++)
1349 int j= dstW*(*outFilterSize);
1350 (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
1358 static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
1361 long imm8OfPShufW1A;
1362 long imm8OfPShufW2A;
1363 long fragmentLengthA;
1365 long imm8OfPShufW1B;
1366 long imm8OfPShufW2B;
1367 long fragmentLengthB;
1372 // create an optimized horizontal scaling routine
1380 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
1381 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
1382 "movd 1(%%"REG_c", %%"REG_S"), %%mm1 \n\t"
1383 "punpcklbw %%mm7, %%mm1 \n\t"
1384 "punpcklbw %%mm7, %%mm0 \n\t"
1385 "pshufw $0xFF, %%mm1, %%mm1 \n\t"
1387 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1389 "psubw %%mm1, %%mm0 \n\t"
1390 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
1391 "pmullw %%mm3, %%mm0 \n\t"
1392 "psllw $7, %%mm1 \n\t"
1393 "paddw %%mm1, %%mm0 \n\t"
1395 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
1397 "add $8, %%"REG_a" \n\t"
1412 :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
1413 "=r" (fragmentLengthA)
1420 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
1421 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
1422 "punpcklbw %%mm7, %%mm0 \n\t"
1423 "pshufw $0xFF, %%mm0, %%mm1 \n\t"
1425 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1427 "psubw %%mm1, %%mm0 \n\t"
1428 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
1429 "pmullw %%mm3, %%mm0 \n\t"
1430 "psllw $7, %%mm1 \n\t"
1431 "paddw %%mm1, %%mm0 \n\t"
1433 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
1435 "add $8, %%"REG_a" \n\t"
1450 :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
1451 "=r" (fragmentLengthB)
1454 xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1457 for (i=0; i<dstW/numSplits; i++)
1464 int b=((xpos+xInc)>>16) - xx;
1465 int c=((xpos+xInc*2)>>16) - xx;
1466 int d=((xpos+xInc*3)>>16) - xx;
1468 filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
1469 filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
1470 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
1471 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
1476 int maxShift= 3-(d+1);
1479 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
1481 funnyCode[fragmentPos + imm8OfPShufW1B]=
1482 (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
1483 funnyCode[fragmentPos + imm8OfPShufW2B]=
1484 a | (b<<2) | (c<<4) | (d<<6);
1486 if (i+3>=dstW) shift=maxShift; //avoid overread
1487 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
1489 if (shift && i>=shift)
1491 funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
1492 funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
1493 filterPos[i/2]-=shift;
1496 fragmentPos+= fragmentLengthB;
1503 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
1505 funnyCode[fragmentPos + imm8OfPShufW1A]=
1506 funnyCode[fragmentPos + imm8OfPShufW2A]=
1507 a | (b<<2) | (c<<4) | (d<<6);
1509 if (i+4>=dstW) shift=maxShift; //avoid overread
1510 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
1512 if (shift && i>=shift)
1514 funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
1515 funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
1516 filterPos[i/2]-=shift;
1519 fragmentPos+= fragmentLengthA;
1522 funnyCode[fragmentPos]= RET;
1526 filterPos[i/2]= xpos>>16; // needed to jump to the next part
1528 #endif /* COMPILE_MMX2 */
1530 static void globalInit(void){
1531 // generating tables:
1533 for (i=0; i<768; i++){
1534 int c= av_clip_uint8(i-256);
1539 static SwsFunc getSwsFunc(int flags){
1541 #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)
1542 #if defined(ARCH_X86)
1543 // ordered per speed fasterst first
1544 if (flags & SWS_CPU_CAPS_MMX2)
1545 return swScale_MMX2;
1546 else if (flags & SWS_CPU_CAPS_3DNOW)
1547 return swScale_3DNow;
1548 else if (flags & SWS_CPU_CAPS_MMX)
1555 if (flags & SWS_CPU_CAPS_ALTIVEC)
1556 return swScale_altivec;
1561 #endif /* defined(ARCH_X86) */
1562 #else //RUNTIME_CPUDETECT
1564 return swScale_MMX2;
1565 #elif defined (HAVE_3DNOW)
1566 return swScale_3DNow;
1567 #elif defined (HAVE_MMX)
1569 #elif defined (HAVE_ALTIVEC)
1570 return swScale_altivec;
1574 #endif //!RUNTIME_CPUDETECT
1577 static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1578 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1579 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1581 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1582 memcpy(dst, src[0], srcSliceH*dstStride[0]);
1586 uint8_t *srcPtr= src[0];
1587 uint8_t *dstPtr= dst;
1588 for (i=0; i<srcSliceH; i++)
1590 memcpy(dstPtr, srcPtr, c->srcW);
1591 srcPtr+= srcStride[0];
1592 dstPtr+= dstStride[0];
1595 dst = dstParam[1] + dstStride[1]*srcSliceY/2;
1596 if (c->dstFormat == PIX_FMT_NV12)
1597 interleaveBytes( src[1],src[2],dst,c->srcW/2,srcSliceH/2,srcStride[1],srcStride[2],dstStride[0] );
1599 interleaveBytes( src[2],src[1],dst,c->srcW/2,srcSliceH/2,srcStride[2],srcStride[1],dstStride[0] );
1604 static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1605 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1606 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1608 yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
1613 static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1614 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1615 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1617 yv12touyvy( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
1622 /* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */
1623 static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1624 int srcSliceH, uint8_t* dst[], int dstStride[]){
1625 const int srcFormat= c->srcFormat;
1626 const int dstFormat= c->dstFormat;
1627 const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;
1628 const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;
1629 const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1630 const int dstId= fmt_depth(dstFormat) >> 2;
1631 void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
1634 if ( (isBGR(srcFormat) && isBGR(dstFormat))
1635 || (isRGB(srcFormat) && isRGB(dstFormat))){
1636 switch(srcId | (dstId<<4)){
1637 case 0x34: conv= rgb16to15; break;
1638 case 0x36: conv= rgb24to15; break;
1639 case 0x38: conv= rgb32to15; break;
1640 case 0x43: conv= rgb15to16; break;
1641 case 0x46: conv= rgb24to16; break;
1642 case 0x48: conv= rgb32to16; break;
1643 case 0x63: conv= rgb15to24; break;
1644 case 0x64: conv= rgb16to24; break;
1645 case 0x68: conv= rgb32to24; break;
1646 case 0x83: conv= rgb15to32; break;
1647 case 0x84: conv= rgb16to32; break;
1648 case 0x86: conv= rgb24to32; break;
1649 default: av_log(c, AV_LOG_ERROR, "swScaler: internal error %s -> %s converter\n",
1650 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1652 }else if ( (isBGR(srcFormat) && isRGB(dstFormat))
1653 || (isRGB(srcFormat) && isBGR(dstFormat))){
1654 switch(srcId | (dstId<<4)){
1655 case 0x33: conv= rgb15tobgr15; break;
1656 case 0x34: conv= rgb16tobgr15; break;
1657 case 0x36: conv= rgb24tobgr15; break;
1658 case 0x38: conv= rgb32tobgr15; break;
1659 case 0x43: conv= rgb15tobgr16; break;
1660 case 0x44: conv= rgb16tobgr16; break;
1661 case 0x46: conv= rgb24tobgr16; break;
1662 case 0x48: conv= rgb32tobgr16; break;
1663 case 0x63: conv= rgb15tobgr24; break;
1664 case 0x64: conv= rgb16tobgr24; break;
1665 case 0x66: conv= rgb24tobgr24; break;
1666 case 0x68: conv= rgb32tobgr24; break;
1667 case 0x83: conv= rgb15tobgr32; break;
1668 case 0x84: conv= rgb16tobgr32; break;
1669 case 0x86: conv= rgb24tobgr32; break;
1670 case 0x88: conv= rgb32tobgr32; break;
1671 default: av_log(c, AV_LOG_ERROR, "swScaler: internal error %s -> %s converter\n",
1672 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1675 av_log(c, AV_LOG_ERROR, "swScaler: internal error %s -> %s converter\n",
1676 sws_format_name(srcFormat), sws_format_name(dstFormat));
1681 if (dstStride[0]*srcBpp == srcStride[0]*dstBpp)
1682 conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1686 uint8_t *srcPtr= src[0];
1687 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1689 for (i=0; i<srcSliceH; i++)
1691 conv(srcPtr, dstPtr, c->srcW*srcBpp);
1692 srcPtr+= srcStride[0];
1693 dstPtr+= dstStride[0];
1700 static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1701 int srcSliceH, uint8_t* dst[], int dstStride[]){
1705 dst[0]+ srcSliceY *dstStride[0],
1706 dst[1]+(srcSliceY>>1)*dstStride[1],
1707 dst[2]+(srcSliceY>>1)*dstStride[2],
1709 dstStride[0], dstStride[1], srcStride[0]);
1713 static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1714 int srcSliceH, uint8_t* dst[], int dstStride[]){
1718 if (srcStride[0]==dstStride[0] && srcStride[0] > 0)
1719 memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1721 uint8_t *srcPtr= src[0];
1722 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1724 for (i=0; i<srcSliceH; i++)
1726 memcpy(dstPtr, srcPtr, c->srcW);
1727 srcPtr+= srcStride[0];
1728 dstPtr+= dstStride[0];
1732 if (c->dstFormat==PIX_FMT_YUV420P){
1733 planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
1734 planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
1736 planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
1737 planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
1742 /* unscaled copy like stuff (assumes nearly identical formats) */
1743 static int simpleCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1744 int srcSliceH, uint8_t* dst[], int dstStride[]){
1746 if (isPacked(c->srcFormat))
1748 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1749 memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1753 uint8_t *srcPtr= src[0];
1754 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1757 /* universal length finder */
1758 while(length+c->srcW <= FFABS(dstStride[0])
1759 && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
1762 for (i=0; i<srcSliceH; i++)
1764 memcpy(dstPtr, srcPtr, length);
1765 srcPtr+= srcStride[0];
1766 dstPtr+= dstStride[0];
1771 { /* Planar YUV or gray */
1773 for (plane=0; plane<3; plane++)
1775 int length= plane==0 ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
1776 int y= plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1777 int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1779 if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
1781 if (!isGray(c->dstFormat))
1782 memset(dst[plane], 128, dstStride[plane]*height);
1786 if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
1787 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1791 uint8_t *srcPtr= src[plane];
1792 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1793 for (i=0; i<height; i++)
1795 memcpy(dstPtr, srcPtr, length);
1796 srcPtr+= srcStride[plane];
1797 dstPtr+= dstStride[plane];
1806 static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1807 int srcSliceH, uint8_t* dst[], int dstStride[]){
1809 int length= c->srcW;
1811 int height= srcSliceH;
1813 uint8_t *srcPtr= src[0];
1814 uint8_t *dstPtr= dst[0] + dstStride[0]*y;
1816 if (!isGray(c->dstFormat)){
1817 int height= -((-srcSliceH)>>c->chrDstVSubSample);
1818 memset(dst[1], 128, dstStride[1]*height);
1819 memset(dst[2], 128, dstStride[2]*height);
1821 if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;
1822 for (i=0; i<height; i++)
1824 for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
1825 srcPtr+= srcStride[0];
1826 dstPtr+= dstStride[0];
1831 static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1832 int srcSliceH, uint8_t* dst[], int dstStride[]){
1834 int length= c->srcW;
1836 int height= srcSliceH;
1838 uint8_t *srcPtr= src[0];
1839 uint8_t *dstPtr= dst[0] + dstStride[0]*y;
1840 for (i=0; i<height; i++)
1842 for (j=0; j<length; j++)
1844 dstPtr[j<<1] = srcPtr[j];
1845 dstPtr[(j<<1)+1] = srcPtr[j];
1847 srcPtr+= srcStride[0];
1848 dstPtr+= dstStride[0];
1853 static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1854 int srcSliceH, uint8_t* dst[], int dstStride[]){
1856 int length= c->srcW;
1858 int height= srcSliceH;
1860 uint16_t *srcPtr= src[0];
1861 uint16_t *dstPtr= dst[0] + dstStride[0]*y/2;
1862 for (i=0; i<height; i++)
1864 for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);
1865 srcPtr+= srcStride[0]/2;
1866 dstPtr+= dstStride[0]/2;
1872 static void getSubSampleFactors(int *h, int *v, int format){
1874 case PIX_FMT_UYVY422:
1875 case PIX_FMT_YUYV422:
1879 case PIX_FMT_YUV420P:
1880 case PIX_FMT_GRAY16BE:
1881 case PIX_FMT_GRAY16LE:
1882 case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented
1888 case PIX_FMT_YUV440P:
1892 case PIX_FMT_YUV410P:
1896 case PIX_FMT_YUV444P:
1900 case PIX_FMT_YUV422P:
1904 case PIX_FMT_YUV411P:
1915 static uint16_t roundToInt16(int64_t f){
1916 int r= (f + (1<<15))>>16;
1917 if (r<-0x7FFF) return 0x8000;
1918 else if (r> 0x7FFF) return 0x7FFF;
1923 * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]
1924 * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235
1925 * @return -1 if not supported
1927 int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){
1928 int64_t crv = inv_table[0];
1929 int64_t cbu = inv_table[1];
1930 int64_t cgu = -inv_table[2];
1931 int64_t cgv = -inv_table[3];
1935 if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1936 memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
1937 memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
1939 c->brightness= brightness;
1940 c->contrast = contrast;
1941 c->saturation= saturation;
1942 c->srcRange = srcRange;
1943 c->dstRange = dstRange;
1945 c->uOffset= 0x0400040004000400LL;
1946 c->vOffset= 0x0400040004000400LL;
1952 crv= (crv*224) / 255;
1953 cbu= (cbu*224) / 255;
1954 cgu= (cgu*224) / 255;
1955 cgv= (cgv*224) / 255;
1958 cy = (cy *contrast )>>16;
1959 crv= (crv*contrast * saturation)>>32;
1960 cbu= (cbu*contrast * saturation)>>32;
1961 cgu= (cgu*contrast * saturation)>>32;
1962 cgv= (cgv*contrast * saturation)>>32;
1964 oy -= 256*brightness;
1966 c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
1967 c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
1968 c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
1969 c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
1970 c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
1971 c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
1973 yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
1976 #ifdef COMPILE_ALTIVEC
1977 if (c->flags & SWS_CPU_CAPS_ALTIVEC)
1978 yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);
1984 * @return -1 if not supported
1986 int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){
1987 if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1989 *inv_table = c->srcColorspaceTable;
1990 *table = c->dstColorspaceTable;
1991 *srcRange = c->srcRange;
1992 *dstRange = c->dstRange;
1993 *brightness= c->brightness;
1994 *contrast = c->contrast;
1995 *saturation= c->saturation;
2000 static int handle_jpeg(int *format)
2003 case PIX_FMT_YUVJ420P:
2004 *format = PIX_FMT_YUV420P;
2006 case PIX_FMT_YUVJ422P:
2007 *format = PIX_FMT_YUV422P;
2009 case PIX_FMT_YUVJ444P:
2010 *format = PIX_FMT_YUV444P;
2012 case PIX_FMT_YUVJ440P:
2013 *format = PIX_FMT_YUV440P;
2020 SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
2021 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){
2025 int usesVFilter, usesHFilter;
2026 int unscaled, needsDither;
2027 int srcRange, dstRange;
2028 SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
2029 #if defined(ARCH_X86)
2030 if (flags & SWS_CPU_CAPS_MMX)
2031 asm volatile("emms\n\t"::: "memory");
2034 #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off
2035 flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
2037 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
2038 #elif defined (HAVE_3DNOW)
2039 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
2040 #elif defined (HAVE_MMX)
2041 flags |= SWS_CPU_CAPS_MMX;
2042 #elif defined (HAVE_ALTIVEC)
2043 flags |= SWS_CPU_CAPS_ALTIVEC;
2044 #elif defined (ARCH_BFIN)
2045 flags |= SWS_CPU_CAPS_BFIN;
2047 #endif /* RUNTIME_CPUDETECT */
2048 if (clip_table[512] != 255) globalInit();
2049 if (rgb15to16 == NULL) sws_rgb2rgb_init(flags);
2051 unscaled = (srcW == dstW && srcH == dstH);
2052 needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
2053 && (fmt_depth(dstFormat))<24
2054 && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
2056 srcRange = handle_jpeg(&srcFormat);
2057 dstRange = handle_jpeg(&dstFormat);
2059 if (!isSupportedIn(srcFormat))
2061 av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input format\n", sws_format_name(srcFormat));
2064 if (!isSupportedOut(dstFormat))
2066 av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output format\n", sws_format_name(dstFormat));
2071 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
2073 av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
2074 srcW, srcH, dstW, dstH);
2078 if (!dstFilter) dstFilter= &dummyFilter;
2079 if (!srcFilter) srcFilter= &dummyFilter;
2081 c= av_mallocz(sizeof(SwsContext));
2083 c->av_class = &sws_context_class;
2088 c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
2089 c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
2091 c->dstFormat= dstFormat;
2092 c->srcFormat= srcFormat;
2093 c->vRounder= 4* 0x0001000100010001ULL;
2095 usesHFilter= usesVFilter= 0;
2096 if (dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesVFilter=1;
2097 if (dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesHFilter=1;
2098 if (dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesVFilter=1;
2099 if (dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesHFilter=1;
2100 if (srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesVFilter=1;
2101 if (srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesHFilter=1;
2102 if (srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesVFilter=1;
2103 if (srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesHFilter=1;
2105 getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
2106 getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
2108 // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
2109 if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
2111 // drop some chroma lines if the user wants it
2112 c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
2113 c->chrSrcVSubSample+= c->vChrDrop;
2115 // drop every 2. pixel for chroma calculation unless user wants full chroma
2116 if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)
2117 && srcFormat!=PIX_FMT_RGB8 && srcFormat!=PIX_FMT_BGR8
2118 && srcFormat!=PIX_FMT_RGB4 && srcFormat!=PIX_FMT_BGR4
2119 && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE)
2120 c->chrSrcHSubSample=1;
2123 c->param[0] = param[0];
2124 c->param[1] = param[1];
2127 c->param[1] = SWS_PARAM_DEFAULT;
2130 c->chrIntHSubSample= c->chrDstHSubSample;
2131 c->chrIntVSubSample= c->chrSrcVSubSample;
2133 // Note the -((-x)>>y) is so that we always round toward +inf.
2134 c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
2135 c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
2136 c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
2137 c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
2139 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);
2141 /* unscaled special Cases */
2142 if (unscaled && !usesHFilter && !usesVFilter)
2145 if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))
2147 c->swScale= PlanarToNV12Wrapper;
2151 if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat)))
2153 c->swScale= yuv2rgb_get_func_ptr(c);
2157 if ( srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P )
2159 c->swScale= yvu9toyv12Wrapper;
2163 if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P)
2164 c->swScale= bgr24toyv12Wrapper;
2166 /* rgb/bgr -> rgb/bgr (no dither needed forms) */
2167 if ( (isBGR(srcFormat) || isRGB(srcFormat))
2168 && (isBGR(dstFormat) || isRGB(dstFormat))
2169 && srcFormat != PIX_FMT_BGR8 && dstFormat != PIX_FMT_BGR8
2170 && srcFormat != PIX_FMT_RGB8 && dstFormat != PIX_FMT_RGB8
2171 && srcFormat != PIX_FMT_BGR4 && dstFormat != PIX_FMT_BGR4
2172 && srcFormat != PIX_FMT_RGB4 && dstFormat != PIX_FMT_RGB4
2173 && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
2174 && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
2175 && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
2177 c->swScale= rgb2rgbWrapper;
2179 /* LQ converters if -sws 0 or -sws 4*/
2180 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
2181 /* rgb/bgr -> rgb/bgr (dither needed forms) */
2182 if ( (isBGR(srcFormat) || isRGB(srcFormat))
2183 && (isBGR(dstFormat) || isRGB(dstFormat))
2185 c->swScale= rgb2rgbWrapper;
2188 if (srcFormat == PIX_FMT_YUV420P &&
2189 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422))
2191 if (dstFormat == PIX_FMT_YUYV422)
2192 c->swScale= PlanarToYuy2Wrapper;
2194 c->swScale= PlanarToUyvyWrapper;
2198 #ifdef COMPILE_ALTIVEC
2199 if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
2200 ((srcFormat == PIX_FMT_YUV420P &&
2201 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422)))) {
2202 // unscaled YV12 -> packed YUV, we want speed
2203 if (dstFormat == PIX_FMT_YUYV422)
2204 c->swScale= yv12toyuy2_unscaled_altivec;
2206 c->swScale= yv12touyvy_unscaled_altivec;
2211 if ( srcFormat == dstFormat
2212 || (isPlanarYUV(srcFormat) && isGray(dstFormat))
2213 || (isPlanarYUV(dstFormat) && isGray(srcFormat)) )
2215 c->swScale= simpleCopy;
2218 /* gray16{le,be} conversions */
2219 if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))
2221 c->swScale= gray16togray;
2223 if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))
2225 c->swScale= graytogray16;
2227 if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))
2229 c->swScale= gray16swap;
2233 if (flags & SWS_CPU_CAPS_BFIN)
2234 ff_bfin_get_unscaled_swscale (c);
2238 if (flags&SWS_PRINT_INFO)
2239 av_log(c, AV_LOG_INFO, "SwScaler: using unscaled %s -> %s special converter\n",
2240 sws_format_name(srcFormat), sws_format_name(dstFormat));
2245 if (flags & SWS_CPU_CAPS_MMX2)
2247 c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
2248 if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
2250 if (flags&SWS_PRINT_INFO)
2251 av_log(c, AV_LOG_INFO, "SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");
2253 if (usesHFilter) c->canMMX2BeUsed=0;
2258 c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
2259 c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
2261 // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
2262 // but only for the FAST_BILINEAR mode otherwise do correct scaling
2263 // n-2 is the last chrominance sample available
2264 // this is not perfect, but no one should notice the difference, the more correct variant
2265 // would be like the vertical one, but that would require some special code for the
2266 // first and last pixel
2267 if (flags&SWS_FAST_BILINEAR)
2269 if (c->canMMX2BeUsed)
2274 //we don't use the x86asm scaler if mmx is available
2275 else if (flags & SWS_CPU_CAPS_MMX)
2277 c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
2278 c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
2282 /* precalculate horizontal scaler filter coefficients */
2284 const int filterAlign=
2285 (flags & SWS_CPU_CAPS_MMX) ? 4 :
2286 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2289 initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
2290 srcW , dstW, filterAlign, 1<<14,
2291 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2292 srcFilter->lumH, dstFilter->lumH, c->param);
2293 initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
2294 c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
2295 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2296 srcFilter->chrH, dstFilter->chrH, c->param);
2298 #define MAX_FUNNY_CODE_SIZE 10000
2299 #if defined(COMPILE_MMX2)
2300 // can't downscale !!!
2301 if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
2303 #ifdef MAP_ANONYMOUS
2304 c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2305 c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2307 c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2308 c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2311 c->lumMmx2Filter = av_malloc((dstW /8+8)*sizeof(int16_t));
2312 c->chrMmx2Filter = av_malloc((c->chrDstW /4+8)*sizeof(int16_t));
2313 c->lumMmx2FilterPos= av_malloc((dstW /2/8+8)*sizeof(int32_t));
2314 c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));
2316 initMMX2HScaler( dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
2317 initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
2319 #endif /* defined(COMPILE_MMX2) */
2320 } // Init Horizontal stuff
2324 /* precalculate vertical scaler filter coefficients */
2326 const int filterAlign=
2327 (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :
2328 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2331 initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
2332 srcH , dstH, filterAlign, (1<<12)-4,
2333 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2334 srcFilter->lumV, dstFilter->lumV, c->param);
2335 initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
2336 c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,
2337 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2338 srcFilter->chrV, dstFilter->chrV, c->param);
2341 c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
2342 c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);
2344 for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
2346 short *p = (short *)&c->vYCoeffsBank[i];
2348 p[j] = c->vLumFilter[i];
2351 for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {
2353 short *p = (short *)&c->vCCoeffsBank[i];
2355 p[j] = c->vChrFilter[i];
2360 // Calculate Buffer Sizes so that they won't run out while handling these damn slices
2361 c->vLumBufSize= c->vLumFilterSize;
2362 c->vChrBufSize= c->vChrFilterSize;
2363 for (i=0; i<dstH; i++)
2365 int chrI= i*c->chrDstH / dstH;
2366 int nextSlice= FFMAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
2367 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
2369 nextSlice>>= c->chrSrcVSubSample;
2370 nextSlice<<= c->chrSrcVSubSample;
2371 if (c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
2372 c->vLumBufSize= nextSlice - c->vLumFilterPos[i ];
2373 if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
2374 c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
2377 // allocate pixbufs (we use dynamic allocation because otherwise we would need to
2378 c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));
2379 c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));
2380 //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)
2381 /* align at 16 bytes for AltiVec */
2382 for (i=0; i<c->vLumBufSize; i++)
2383 c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(4000);
2384 for (i=0; i<c->vChrBufSize; i++)
2385 c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc(8000);
2387 //try to avoid drawing green stuff between the right end and the stride end
2388 for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, 8000);
2390 ASSERT(c->chrDstH <= dstH)
2392 if (flags&SWS_PRINT_INFO)
2395 char *dither= " dithered";
2399 if (flags&SWS_FAST_BILINEAR)
2400 av_log(c, AV_LOG_INFO, "SwScaler: FAST_BILINEAR scaler, ");
2401 else if (flags&SWS_BILINEAR)
2402 av_log(c, AV_LOG_INFO, "SwScaler: BILINEAR scaler, ");
2403 else if (flags&SWS_BICUBIC)
2404 av_log(c, AV_LOG_INFO, "SwScaler: BICUBIC scaler, ");
2405 else if (flags&SWS_X)
2406 av_log(c, AV_LOG_INFO, "SwScaler: Experimental scaler, ");
2407 else if (flags&SWS_POINT)
2408 av_log(c, AV_LOG_INFO, "SwScaler: Nearest Neighbor / POINT scaler, ");
2409 else if (flags&SWS_AREA)
2410 av_log(c, AV_LOG_INFO, "SwScaler: Area Averageing scaler, ");
2411 else if (flags&SWS_BICUBLIN)
2412 av_log(c, AV_LOG_INFO, "SwScaler: luma BICUBIC / chroma BILINEAR scaler, ");
2413 else if (flags&SWS_GAUSS)
2414 av_log(c, AV_LOG_INFO, "SwScaler: Gaussian scaler, ");
2415 else if (flags&SWS_SINC)
2416 av_log(c, AV_LOG_INFO, "SwScaler: Sinc scaler, ");
2417 else if (flags&SWS_LANCZOS)
2418 av_log(c, AV_LOG_INFO, "SwScaler: Lanczos scaler, ");
2419 else if (flags&SWS_SPLINE)
2420 av_log(c, AV_LOG_INFO, "SwScaler: Bicubic spline scaler, ");
2422 av_log(c, AV_LOG_INFO, "SwScaler: ehh flags invalid?! ");
2424 if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)
2425 av_log(c, AV_LOG_INFO, "from %s to%s %s ",
2426 sws_format_name(srcFormat), dither, sws_format_name(dstFormat));
2428 av_log(c, AV_LOG_INFO, "from %s to %s ",
2429 sws_format_name(srcFormat), sws_format_name(dstFormat));
2431 if (flags & SWS_CPU_CAPS_MMX2)
2432 av_log(c, AV_LOG_INFO, "using MMX2\n");
2433 else if (flags & SWS_CPU_CAPS_3DNOW)
2434 av_log(c, AV_LOG_INFO, "using 3DNOW\n");
2435 else if (flags & SWS_CPU_CAPS_MMX)
2436 av_log(c, AV_LOG_INFO, "using MMX\n");
2437 else if (flags & SWS_CPU_CAPS_ALTIVEC)
2438 av_log(c, AV_LOG_INFO, "using AltiVec\n");
2440 av_log(c, AV_LOG_INFO, "using C\n");
2443 if (flags & SWS_PRINT_INFO)
2445 if (flags & SWS_CPU_CAPS_MMX)
2447 if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
2448 av_log(c, AV_LOG_VERBOSE, "SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
2451 if (c->hLumFilterSize==4)
2452 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");
2453 else if (c->hLumFilterSize==8)
2454 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");
2456 av_log(c, AV_LOG_VERBOSE, "SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");
2458 if (c->hChrFilterSize==4)
2459 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");
2460 else if (c->hChrFilterSize==8)
2461 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");
2463 av_log(c, AV_LOG_VERBOSE, "SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");
2468 #if defined(ARCH_X86)
2469 av_log(c, AV_LOG_VERBOSE, "SwScaler: using X86-Asm scaler for horizontal scaling\n");
2471 if (flags & SWS_FAST_BILINEAR)
2472 av_log(c, AV_LOG_VERBOSE, "SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");
2474 av_log(c, AV_LOG_VERBOSE, "SwScaler: using C scaler for horizontal scaling\n");
2477 if (isPlanarYUV(dstFormat))
2479 if (c->vLumFilterSize==1)
2480 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2482 av_log(c, AV_LOG_VERBOSE, "SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2486 if (c->vLumFilterSize==1 && c->vChrFilterSize==2)
2487 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
2488 "SwScaler: 2-tap scaler for vertical chrominance scaling (BGR)\n",(flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2489 else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)
2490 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2492 av_log(c, AV_LOG_VERBOSE, "SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2495 if (dstFormat==PIX_FMT_BGR24)
2496 av_log(c, AV_LOG_VERBOSE, "SwScaler: using %s YV12->BGR24 Converter\n",
2497 (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
2498 else if (dstFormat==PIX_FMT_RGB32)
2499 av_log(c, AV_LOG_VERBOSE, "SwScaler: using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2500 else if (dstFormat==PIX_FMT_BGR565)
2501 av_log(c, AV_LOG_VERBOSE, "SwScaler: using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2502 else if (dstFormat==PIX_FMT_BGR555)
2503 av_log(c, AV_LOG_VERBOSE, "SwScaler: using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2505 av_log(c, AV_LOG_VERBOSE, "SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
2507 if (flags & SWS_PRINT_INFO)
2509 av_log(c, AV_LOG_DEBUG, "SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2510 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
2511 av_log(c, AV_LOG_DEBUG, "SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2512 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
2515 c->swScale= getSwsFunc(flags);
2520 * swscale warper, so we don't need to export the SwsContext.
2521 * assumes planar YUV to be in YUV order instead of YVU
2523 int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2524 int srcSliceH, uint8_t* dst[], int dstStride[]){
2526 uint8_t* src2[4]= {src[0], src[1], src[2]};
2528 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
2529 av_log(c, AV_LOG_ERROR, "swScaler: slices start in the middle!\n");
2532 if (c->sliceDir == 0) {
2533 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
2536 if (c->srcFormat == PIX_FMT_PAL8){
2537 for (i=0; i<256; i++){
2538 int p= ((uint32_t*)(src[1]))[i];
2539 int r= (p>>16)&0xFF;
2540 int g= (p>> 8)&0xFF;
2542 int y= av_clip_uint8(((RY*r + GY*g + BY*b)>>RGB2YUV_SHIFT) + 16 );
2543 int u= av_clip_uint8(((RU*r + GU*g + BU*b)>>RGB2YUV_SHIFT) + 128);
2544 int v= av_clip_uint8(((RV*r + GV*g + BV*b)>>RGB2YUV_SHIFT) + 128);
2545 pal[i]= y + (u<<8) + (v<<16);
2550 // copy strides, so they can safely be modified
2551 if (c->sliceDir == 1) {
2552 // slices go from top to bottom
2553 int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};
2554 int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};
2555 return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
2557 // slices go from bottom to top => we flip the image internally
2558 uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],
2559 dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],
2560 dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};
2561 int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};
2562 int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};
2564 src2[0] += (srcSliceH-1)*srcStride[0];
2565 if (c->srcFormat != PIX_FMT_PAL8)
2566 src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
2567 src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
2569 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
2574 * swscale warper, so we don't need to export the SwsContext
2576 int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2577 int srcSliceH, uint8_t* dst[], int dstStride[]){
2578 return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
2581 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2582 float lumaSharpen, float chromaSharpen,
2583 float chromaHShift, float chromaVShift,
2586 SwsFilter *filter= av_malloc(sizeof(SwsFilter));
2588 if (lumaGBlur!=0.0){
2589 filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
2590 filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
2592 filter->lumH= sws_getIdentityVec();
2593 filter->lumV= sws_getIdentityVec();
2596 if (chromaGBlur!=0.0){
2597 filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
2598 filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
2600 filter->chrH= sws_getIdentityVec();
2601 filter->chrV= sws_getIdentityVec();
2604 if (chromaSharpen!=0.0){
2605 SwsVector *id= sws_getIdentityVec();
2606 sws_scaleVec(filter->chrH, -chromaSharpen);
2607 sws_scaleVec(filter->chrV, -chromaSharpen);
2608 sws_addVec(filter->chrH, id);
2609 sws_addVec(filter->chrV, id);
2613 if (lumaSharpen!=0.0){
2614 SwsVector *id= sws_getIdentityVec();
2615 sws_scaleVec(filter->lumH, -lumaSharpen);
2616 sws_scaleVec(filter->lumV, -lumaSharpen);
2617 sws_addVec(filter->lumH, id);
2618 sws_addVec(filter->lumV, id);
2622 if (chromaHShift != 0.0)
2623 sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
2625 if (chromaVShift != 0.0)
2626 sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
2628 sws_normalizeVec(filter->chrH, 1.0);
2629 sws_normalizeVec(filter->chrV, 1.0);
2630 sws_normalizeVec(filter->lumH, 1.0);
2631 sws_normalizeVec(filter->lumV, 1.0);
2633 if (verbose) sws_printVec(filter->chrH);
2634 if (verbose) sws_printVec(filter->lumH);
2640 * returns a normalized gaussian curve used to filter stuff
2641 * quality=3 is high quality, lowwer is lowwer quality
2643 SwsVector *sws_getGaussianVec(double variance, double quality){
2644 const int length= (int)(variance*quality + 0.5) | 1;
2646 double *coeff= av_malloc(length*sizeof(double));
2647 double middle= (length-1)*0.5;
2648 SwsVector *vec= av_malloc(sizeof(SwsVector));
2651 vec->length= length;
2653 for (i=0; i<length; i++)
2655 double dist= i-middle;
2656 coeff[i]= exp( -dist*dist/(2*variance*variance) ) / sqrt(2*variance*PI);
2659 sws_normalizeVec(vec, 1.0);
2664 SwsVector *sws_getConstVec(double c, int length){
2666 double *coeff= av_malloc(length*sizeof(double));
2667 SwsVector *vec= av_malloc(sizeof(SwsVector));
2670 vec->length= length;
2672 for (i=0; i<length; i++)
2679 SwsVector *sws_getIdentityVec(void){
2680 return sws_getConstVec(1.0, 1);
2683 double sws_dcVec(SwsVector *a){
2687 for (i=0; i<a->length; i++)
2693 void sws_scaleVec(SwsVector *a, double scalar){
2696 for (i=0; i<a->length; i++)
2697 a->coeff[i]*= scalar;
2700 void sws_normalizeVec(SwsVector *a, double height){
2701 sws_scaleVec(a, height/sws_dcVec(a));
2704 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){
2705 int length= a->length + b->length - 1;
2706 double *coeff= av_malloc(length*sizeof(double));
2708 SwsVector *vec= av_malloc(sizeof(SwsVector));
2711 vec->length= length;
2713 for (i=0; i<length; i++) coeff[i]= 0.0;
2715 for (i=0; i<a->length; i++)
2717 for (j=0; j<b->length; j++)
2719 coeff[i+j]+= a->coeff[i]*b->coeff[j];
2726 static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){
2727 int length= FFMAX(a->length, b->length);
2728 double *coeff= av_malloc(length*sizeof(double));
2730 SwsVector *vec= av_malloc(sizeof(SwsVector));
2733 vec->length= length;
2735 for (i=0; i<length; i++) coeff[i]= 0.0;
2737 for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2738 for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
2743 static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){
2744 int length= FFMAX(a->length, b->length);
2745 double *coeff= av_malloc(length*sizeof(double));
2747 SwsVector *vec= av_malloc(sizeof(SwsVector));
2750 vec->length= length;
2752 for (i=0; i<length; i++) coeff[i]= 0.0;
2754 for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2755 for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
2760 /* shift left / or right if "shift" is negative */
2761 static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){
2762 int length= a->length + FFABS(shift)*2;
2763 double *coeff= av_malloc(length*sizeof(double));
2765 SwsVector *vec= av_malloc(sizeof(SwsVector));
2768 vec->length= length;
2770 for (i=0; i<length; i++) coeff[i]= 0.0;
2772 for (i=0; i<a->length; i++)
2774 coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
2780 void sws_shiftVec(SwsVector *a, int shift){
2781 SwsVector *shifted= sws_getShiftedVec(a, shift);
2783 a->coeff= shifted->coeff;
2784 a->length= shifted->length;
2788 void sws_addVec(SwsVector *a, SwsVector *b){
2789 SwsVector *sum= sws_sumVec(a, b);
2791 a->coeff= sum->coeff;
2792 a->length= sum->length;
2796 void sws_subVec(SwsVector *a, SwsVector *b){
2797 SwsVector *diff= sws_diffVec(a, b);
2799 a->coeff= diff->coeff;
2800 a->length= diff->length;
2804 void sws_convVec(SwsVector *a, SwsVector *b){
2805 SwsVector *conv= sws_getConvVec(a, b);
2807 a->coeff= conv->coeff;
2808 a->length= conv->length;
2812 SwsVector *sws_cloneVec(SwsVector *a){
2813 double *coeff= av_malloc(a->length*sizeof(double));
2815 SwsVector *vec= av_malloc(sizeof(SwsVector));
2818 vec->length= a->length;
2820 for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];
2825 void sws_printVec(SwsVector *a){
2831 for (i=0; i<a->length; i++)
2832 if (a->coeff[i]>max) max= a->coeff[i];
2834 for (i=0; i<a->length; i++)
2835 if (a->coeff[i]<min) min= a->coeff[i];
2839 for (i=0; i<a->length; i++)
2841 int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
2842 av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);
2843 for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");
2844 av_log(NULL, AV_LOG_DEBUG, "|\n");
2848 void sws_freeVec(SwsVector *a){
2856 void sws_freeFilter(SwsFilter *filter){
2857 if (!filter) return;
2859 if (filter->lumH) sws_freeVec(filter->lumH);
2860 if (filter->lumV) sws_freeVec(filter->lumV);
2861 if (filter->chrH) sws_freeVec(filter->chrH);
2862 if (filter->chrV) sws_freeVec(filter->chrV);
2867 void sws_freeContext(SwsContext *c){
2873 for (i=0; i<c->vLumBufSize; i++)
2875 av_free(c->lumPixBuf[i]);
2876 c->lumPixBuf[i]=NULL;
2878 av_free(c->lumPixBuf);
2884 for (i=0; i<c->vChrBufSize; i++)
2886 av_free(c->chrPixBuf[i]);
2887 c->chrPixBuf[i]=NULL;
2889 av_free(c->chrPixBuf);
2893 av_free(c->vLumFilter);
2894 c->vLumFilter = NULL;
2895 av_free(c->vChrFilter);
2896 c->vChrFilter = NULL;
2897 av_free(c->hLumFilter);
2898 c->hLumFilter = NULL;
2899 av_free(c->hChrFilter);
2900 c->hChrFilter = NULL;
2902 av_free(c->vYCoeffsBank);
2903 c->vYCoeffsBank = NULL;
2904 av_free(c->vCCoeffsBank);
2905 c->vCCoeffsBank = NULL;
2908 av_free(c->vLumFilterPos);
2909 c->vLumFilterPos = NULL;
2910 av_free(c->vChrFilterPos);
2911 c->vChrFilterPos = NULL;
2912 av_free(c->hLumFilterPos);
2913 c->hLumFilterPos = NULL;
2914 av_free(c->hChrFilterPos);
2915 c->hChrFilterPos = NULL;
2917 #if defined(ARCH_X86) && defined(CONFIG_GPL)
2918 #ifdef MAP_ANONYMOUS
2919 if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);
2920 if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);
2922 av_free(c->funnyYCode);
2923 av_free(c->funnyUVCode);
2926 c->funnyUVCode=NULL;
2927 #endif /* defined(ARCH_X86) */
2929 av_free(c->lumMmx2Filter);
2930 c->lumMmx2Filter=NULL;
2931 av_free(c->chrMmx2Filter);
2932 c->chrMmx2Filter=NULL;
2933 av_free(c->lumMmx2FilterPos);
2934 c->lumMmx2FilterPos=NULL;
2935 av_free(c->chrMmx2FilterPos);
2936 c->chrMmx2FilterPos=NULL;
2937 av_free(c->yuvTable);
2944 * Checks if context is valid or reallocs a new one instead.
2945 * If context is NULL, just calls sws_getContext() to get a new one.
2946 * Otherwise, checks if the parameters are the same already saved in context.
2947 * If that is the case, returns the current context.
2948 * Otherwise, frees context and gets a new one.
2950 * Be warned that srcFilter, dstFilter are not checked, they are
2951 * asumed to remain valid.
2953 struct SwsContext *sws_getCachedContext(struct SwsContext *context,
2954 int srcW, int srcH, int srcFormat,
2955 int dstW, int dstH, int dstFormat, int flags,
2956 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)
2958 if (context != NULL) {
2959 if ((context->srcW != srcW) || (context->srcH != srcH) ||
2960 (context->srcFormat != srcFormat) ||
2961 (context->dstW != dstW) || (context->dstH != dstH) ||
2962 (context->dstFormat != dstFormat) || (context->flags != flags) ||
2963 (context->param != param))
2965 sws_freeContext(context);
2969 if (context == NULL) {
2970 return sws_getContext(srcW, srcH, srcFormat,
2971 dstW, dstH, dstFormat, flags,
2972 srcFilter, dstFilter, param);