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"
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_YUVA420P \
106 || (x)==PIX_FMT_YUYV422 \
107 || (x)==PIX_FMT_UYVY422 \
108 || (x)==PIX_FMT_RGB32 \
109 || (x)==PIX_FMT_BGR24 \
110 || (x)==PIX_FMT_BGR565 \
111 || (x)==PIX_FMT_BGR555 \
112 || (x)==PIX_FMT_BGR32 \
113 || (x)==PIX_FMT_RGB24 \
114 || (x)==PIX_FMT_RGB565 \
115 || (x)==PIX_FMT_RGB555 \
116 || (x)==PIX_FMT_GRAY8 \
117 || (x)==PIX_FMT_YUV410P \
118 || (x)==PIX_FMT_GRAY16BE \
119 || (x)==PIX_FMT_GRAY16LE \
120 || (x)==PIX_FMT_YUV444P \
121 || (x)==PIX_FMT_YUV422P \
122 || (x)==PIX_FMT_YUV411P \
123 || (x)==PIX_FMT_PAL8 \
124 || (x)==PIX_FMT_BGR8 \
125 || (x)==PIX_FMT_RGB8 \
126 || (x)==PIX_FMT_BGR4_BYTE \
127 || (x)==PIX_FMT_RGB4_BYTE \
128 || (x)==PIX_FMT_YUV440P \
130 #define isSupportedOut(x) ( \
131 (x)==PIX_FMT_YUV420P \
132 || (x)==PIX_FMT_YUYV422 \
133 || (x)==PIX_FMT_UYVY422 \
134 || (x)==PIX_FMT_YUV444P \
135 || (x)==PIX_FMT_YUV422P \
136 || (x)==PIX_FMT_YUV411P \
139 || (x)==PIX_FMT_NV12 \
140 || (x)==PIX_FMT_NV21 \
141 || (x)==PIX_FMT_GRAY16BE \
142 || (x)==PIX_FMT_GRAY16LE \
143 || (x)==PIX_FMT_GRAY8 \
144 || (x)==PIX_FMT_YUV410P \
146 #define isPacked(x) ( \
148 || (x)==PIX_FMT_YUYV422 \
149 || (x)==PIX_FMT_UYVY422 \
154 #define RGB2YUV_SHIFT 16
155 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
156 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
157 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
158 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
159 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
160 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
161 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
162 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
163 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
165 extern const int32_t Inverse_Table_6_9[8][4];
169 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
172 more intelligent misalignment avoidance for the horizontal scaler
173 write special vertical cubic upscale version
174 Optimize C code (yv12 / minmax)
175 add support for packed pixel yuv input & output
176 add support for Y8 output
177 optimize bgr24 & bgr32
178 add BGR4 output support
179 write special BGR->BGR scaler
182 #if defined(ARCH_X86) && defined (CONFIG_GPL)
183 DECLARE_ASM_CONST(8, uint64_t, bF8)= 0xF8F8F8F8F8F8F8F8LL;
184 DECLARE_ASM_CONST(8, uint64_t, bFC)= 0xFCFCFCFCFCFCFCFCLL;
185 DECLARE_ASM_CONST(8, uint64_t, w10)= 0x0010001000100010LL;
186 DECLARE_ASM_CONST(8, uint64_t, w02)= 0x0002000200020002LL;
187 DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;
188 DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;
189 DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;
190 DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;
192 static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
193 static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
194 static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
195 static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
197 const DECLARE_ALIGNED(8, uint64_t, ff_dither4[2]) = {
198 0x0103010301030103LL,
199 0x0200020002000200LL,};
201 const DECLARE_ALIGNED(8, uint64_t, ff_dither8[2]) = {
202 0x0602060206020602LL,
203 0x0004000400040004LL,};
205 DECLARE_ASM_CONST(8, uint64_t, b16Mask)= 0x001F001F001F001FLL;
206 DECLARE_ASM_CONST(8, uint64_t, g16Mask)= 0x07E007E007E007E0LL;
207 DECLARE_ASM_CONST(8, uint64_t, r16Mask)= 0xF800F800F800F800LL;
208 DECLARE_ASM_CONST(8, uint64_t, b15Mask)= 0x001F001F001F001FLL;
209 DECLARE_ASM_CONST(8, uint64_t, g15Mask)= 0x03E003E003E003E0LL;
210 DECLARE_ASM_CONST(8, uint64_t, r15Mask)= 0x7C007C007C007C00LL;
212 DECLARE_ALIGNED(8, const uint64_t, ff_M24A) = 0x00FF0000FF0000FFLL;
213 DECLARE_ALIGNED(8, const uint64_t, ff_M24B) = 0xFF0000FF0000FF00LL;
214 DECLARE_ALIGNED(8, const uint64_t, ff_M24C) = 0x0000FF0000FF0000LL;
217 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff) = 0x000000210041000DULL;
218 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff) = 0x0000FFEEFFDC0038ULL;
219 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff) = 0x00000038FFD2FFF8ULL;
221 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff) = 0x000020E540830C8BULL;
222 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff) = 0x0000ED0FDAC23831ULL;
223 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff) = 0x00003831D0E6F6EAULL;
224 #endif /* FAST_BGR2YV12 */
225 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset) = 0x1010101010101010ULL;
226 DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;
227 DECLARE_ALIGNED(8, const uint64_t, ff_w1111) = 0x0001000100010001ULL;
228 #endif /* defined(ARCH_X86) */
230 // clipping helper table for C implementations:
231 static unsigned char clip_table[768];
233 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
235 extern const uint8_t dither_2x2_4[2][8];
236 extern const uint8_t dither_2x2_8[2][8];
237 extern const uint8_t dither_8x8_32[8][8];
238 extern const uint8_t dither_8x8_73[8][8];
239 extern const uint8_t dither_8x8_220[8][8];
241 static const char * sws_context_to_name(void * ptr) {
245 #define OFFSET(x) offsetof(SwsContext, x)
247 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
249 static const AVOption options[] = {
250 { "sws_flags", "scaler/cpu flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, 0, UINT_MAX, VE, "sws_flags" },
251 { "fast_bilinear", "fast bilinear", 0, FF_OPT_TYPE_CONST, SWS_FAST_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },
252 { "bilinear", "bilinear", 0, FF_OPT_TYPE_CONST, SWS_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },
253 { "bicubic", "bicubic", 0, FF_OPT_TYPE_CONST, SWS_BICUBIC, INT_MIN, INT_MAX, VE, "sws_flags" },
254 { "experimental", "experimental", 0, FF_OPT_TYPE_CONST, SWS_X, INT_MIN, INT_MAX, VE, "sws_flags" },
255 { "neighbor", "nearest neighbor", 0, FF_OPT_TYPE_CONST, SWS_POINT, INT_MIN, INT_MAX, VE, "sws_flags" },
256 { "area", "averaging area", 0, FF_OPT_TYPE_CONST, SWS_AREA, INT_MIN, INT_MAX, VE, "sws_flags" },
257 { "bicublin", "luma bicubic, chroma bilinear", 0, FF_OPT_TYPE_CONST, SWS_BICUBLIN, INT_MIN, INT_MAX, VE, "sws_flags" },
258 { "gauss", "gaussian", 0, FF_OPT_TYPE_CONST, SWS_GAUSS, INT_MIN, INT_MAX, VE, "sws_flags" },
259 { "sinc", "sinc", 0, FF_OPT_TYPE_CONST, SWS_SINC, INT_MIN, INT_MAX, VE, "sws_flags" },
260 { "lanczos", "lanczos", 0, FF_OPT_TYPE_CONST, SWS_LANCZOS, INT_MIN, INT_MAX, VE, "sws_flags" },
261 { "spline", "natural bicubic spline", 0, FF_OPT_TYPE_CONST, SWS_SPLINE, INT_MIN, INT_MAX, VE, "sws_flags" },
262 { "print_info", "print info", 0, FF_OPT_TYPE_CONST, SWS_PRINT_INFO, INT_MIN, INT_MAX, VE, "sws_flags" },
263 { "accurate_rnd", "accurate rounding", 0, FF_OPT_TYPE_CONST, SWS_ACCURATE_RND, INT_MIN, INT_MAX, VE, "sws_flags" },
264 { "mmx", "MMX SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX, INT_MIN, INT_MAX, VE, "sws_flags" },
265 { "mmx2", "MMX2 SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX2, INT_MIN, INT_MAX, VE, "sws_flags" },
266 { "3dnow", "3DNOW SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_3DNOW, INT_MIN, INT_MAX, VE, "sws_flags" },
267 { "altivec", "AltiVec SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_ALTIVEC, INT_MIN, INT_MAX, VE, "sws_flags" },
268 { "bfin", "Blackfin SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_BFIN, INT_MIN, INT_MAX, VE, "sws_flags" },
269 { "full_chroma_int", "full chroma interpolation", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INT, INT_MIN, INT_MAX, VE, "sws_flags" },
270 { "full_chroma_inp", "full chroma input", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INP, INT_MIN, INT_MAX, VE, "sws_flags" },
277 static const AVClass sws_context_class = { "SWScaler", sws_context_to_name, options };
279 const char *sws_format_name(enum PixelFormat format)
282 case PIX_FMT_YUV420P:
284 case PIX_FMT_YUVA420P:
286 case PIX_FMT_YUYV422:
292 case PIX_FMT_YUV422P:
294 case PIX_FMT_YUV444P:
298 case PIX_FMT_YUV410P:
300 case PIX_FMT_YUV411P:
306 case PIX_FMT_GRAY16BE:
308 case PIX_FMT_GRAY16LE:
312 case PIX_FMT_MONOWHITE:
314 case PIX_FMT_MONOBLACK:
318 case PIX_FMT_YUVJ420P:
320 case PIX_FMT_YUVJ422P:
322 case PIX_FMT_YUVJ444P:
324 case PIX_FMT_XVMC_MPEG2_MC:
325 return "xvmc_mpeg2_mc";
326 case PIX_FMT_XVMC_MPEG2_IDCT:
327 return "xvmc_mpeg2_idct";
328 case PIX_FMT_UYVY422:
330 case PIX_FMT_UYYVYY411:
332 case PIX_FMT_RGB32_1:
334 case PIX_FMT_BGR32_1:
346 case PIX_FMT_BGR4_BYTE:
352 case PIX_FMT_RGB4_BYTE:
358 case PIX_FMT_YUV440P:
361 return "Unknown format";
365 #if defined(ARCH_X86) && defined (CONFIG_GPL)
366 void in_asm_used_var_warning_killer()
368 volatile int i= bF8+bFC+w10+
369 bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+
370 ff_M24A+ff_M24B+ff_M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+ff_dither4[0]+ff_dither8[0]+bm01010101;
375 static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
376 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
377 uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
379 //FIXME Optimize (just quickly writen not opti..)
381 for (i=0; i<dstW; i++)
385 for (j=0; j<lumFilterSize; j++)
386 val += lumSrc[j][i] * lumFilter[j];
388 dest[i]= av_clip_uint8(val>>19);
392 for (i=0; i<chrDstW; i++)
397 for (j=0; j<chrFilterSize; j++)
399 u += chrSrc[j][i] * chrFilter[j];
400 v += chrSrc[j][i + VOFW] * chrFilter[j];
403 uDest[i]= av_clip_uint8(u>>19);
404 vDest[i]= av_clip_uint8(v>>19);
408 static inline void yuv2nv12XinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
409 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
410 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
412 //FIXME Optimize (just quickly writen not opti..)
414 for (i=0; i<dstW; i++)
418 for (j=0; j<lumFilterSize; j++)
419 val += lumSrc[j][i] * lumFilter[j];
421 dest[i]= av_clip_uint8(val>>19);
427 if (dstFormat == PIX_FMT_NV12)
428 for (i=0; i<chrDstW; i++)
433 for (j=0; j<chrFilterSize; j++)
435 u += chrSrc[j][i] * chrFilter[j];
436 v += chrSrc[j][i + VOFW] * chrFilter[j];
439 uDest[2*i]= av_clip_uint8(u>>19);
440 uDest[2*i+1]= av_clip_uint8(v>>19);
443 for (i=0; i<chrDstW; i++)
448 for (j=0; j<chrFilterSize; j++)
450 u += chrSrc[j][i] * chrFilter[j];
451 v += chrSrc[j][i + VOFW] * chrFilter[j];
454 uDest[2*i]= av_clip_uint8(v>>19);
455 uDest[2*i+1]= av_clip_uint8(u>>19);
459 #define YSCALE_YUV_2_PACKEDX_C(type) \
460 for (i=0; i<(dstW>>1); i++){\
466 type av_unused *r, *b, *g;\
469 for (j=0; j<lumFilterSize; j++)\
471 Y1 += lumSrc[j][i2] * lumFilter[j];\
472 Y2 += lumSrc[j][i2+1] * lumFilter[j];\
474 for (j=0; j<chrFilterSize; j++)\
476 U += chrSrc[j][i] * chrFilter[j];\
477 V += chrSrc[j][i+VOFW] * chrFilter[j];\
483 if ((Y1|Y2|U|V)&256)\
485 if (Y1>255) Y1=255; \
486 else if (Y1<0)Y1=0; \
487 if (Y2>255) Y2=255; \
488 else if (Y2<0)Y2=0; \
495 #define YSCALE_YUV_2_RGBX_C(type) \
496 YSCALE_YUV_2_PACKEDX_C(type) \
497 r = (type *)c->table_rV[V]; \
498 g = (type *)(c->table_gU[U] + c->table_gV[V]); \
499 b = (type *)c->table_bU[U]; \
501 #define YSCALE_YUV_2_PACKED2_C \
502 for (i=0; i<(dstW>>1); i++){ \
504 int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19; \
505 int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19; \
506 int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19; \
507 int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19; \
509 #define YSCALE_YUV_2_RGB2_C(type) \
510 YSCALE_YUV_2_PACKED2_C\
512 r = (type *)c->table_rV[V];\
513 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
514 b = (type *)c->table_bU[U];\
516 #define YSCALE_YUV_2_PACKED1_C \
517 for (i=0; i<(dstW>>1); i++){\
519 int Y1= buf0[i2 ]>>7;\
520 int Y2= buf0[i2+1]>>7;\
521 int U= (uvbuf1[i ])>>7;\
522 int V= (uvbuf1[i+VOFW])>>7;\
524 #define YSCALE_YUV_2_RGB1_C(type) \
525 YSCALE_YUV_2_PACKED1_C\
527 r = (type *)c->table_rV[V];\
528 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
529 b = (type *)c->table_bU[U];\
531 #define YSCALE_YUV_2_PACKED1B_C \
532 for (i=0; i<(dstW>>1); i++){\
534 int Y1= buf0[i2 ]>>7;\
535 int Y2= buf0[i2+1]>>7;\
536 int U= (uvbuf0[i ] + uvbuf1[i ])>>8;\
537 int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\
539 #define YSCALE_YUV_2_RGB1B_C(type) \
540 YSCALE_YUV_2_PACKED1B_C\
542 r = (type *)c->table_rV[V];\
543 g = (type *)(c->table_gU[U] + c->table_gV[V]);\
544 b = (type *)c->table_bU[U];\
546 #define YSCALE_YUV_2_ANYRGB_C(func, func2)\
547 switch(c->dstFormat)\
552 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
553 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
558 ((uint8_t*)dest)[0]= r[Y1];\
559 ((uint8_t*)dest)[1]= g[Y1];\
560 ((uint8_t*)dest)[2]= b[Y1];\
561 ((uint8_t*)dest)[3]= r[Y2];\
562 ((uint8_t*)dest)[4]= g[Y2];\
563 ((uint8_t*)dest)[5]= b[Y2];\
569 ((uint8_t*)dest)[0]= b[Y1];\
570 ((uint8_t*)dest)[1]= g[Y1];\
571 ((uint8_t*)dest)[2]= r[Y1];\
572 ((uint8_t*)dest)[3]= b[Y2];\
573 ((uint8_t*)dest)[4]= g[Y2];\
574 ((uint8_t*)dest)[5]= r[Y2];\
578 case PIX_FMT_RGB565:\
579 case PIX_FMT_BGR565:\
581 const int dr1= dither_2x2_8[y&1 ][0];\
582 const int dg1= dither_2x2_4[y&1 ][0];\
583 const int db1= dither_2x2_8[(y&1)^1][0];\
584 const int dr2= dither_2x2_8[y&1 ][1];\
585 const int dg2= dither_2x2_4[y&1 ][1];\
586 const int db2= dither_2x2_8[(y&1)^1][1];\
588 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
589 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
593 case PIX_FMT_RGB555:\
594 case PIX_FMT_BGR555:\
596 const int dr1= dither_2x2_8[y&1 ][0];\
597 const int dg1= dither_2x2_8[y&1 ][1];\
598 const int db1= dither_2x2_8[(y&1)^1][0];\
599 const int dr2= dither_2x2_8[y&1 ][1];\
600 const int dg2= dither_2x2_8[y&1 ][0];\
601 const int db2= dither_2x2_8[(y&1)^1][1];\
603 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
604 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
611 const uint8_t * const d64= dither_8x8_73[y&7];\
612 const uint8_t * const d32= dither_8x8_32[y&7];\
614 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
615 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
622 const uint8_t * const d64= dither_8x8_73 [y&7];\
623 const uint8_t * const d128=dither_8x8_220[y&7];\
625 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
626 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
630 case PIX_FMT_RGB4_BYTE:\
631 case PIX_FMT_BGR4_BYTE:\
633 const uint8_t * const d64= dither_8x8_73 [y&7];\
634 const uint8_t * const d128=dither_8x8_220[y&7];\
636 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
637 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
641 case PIX_FMT_MONOBLACK:\
643 const uint8_t * const d128=dither_8x8_220[y&7];\
644 uint8_t *g= c->table_gU[128] + c->table_gV[128];\
645 for (i=0; i<dstW-7; i+=8){\
647 acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];\
648 acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
649 acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
650 acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
651 acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
652 acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
653 acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
654 acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
655 ((uint8_t*)dest)[0]= acc;\
660 ((uint8_t*)dest)-= dstW>>4;\
664 static int top[1024];\
665 static int last_new[1024][1024];\
666 static int last_in3[1024][1024];\
667 static int drift[1024][1024];\
671 const uint8_t * const d128=dither_8x8_220[y&7];\
676 for (i=dstW>>1; i<dstW; i++){\
677 int in= ((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19);\
678 int in2 = (76309 * (in - 16) + 32768) >> 16;\
679 int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\
680 int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\
681 + (last_new[y][i] - in3)*f/256;\
682 int new= old> 128 ? 255 : 0;\
684 error_new+= FFABS(last_new[y][i] - new);\
685 error_in3+= FFABS(last_in3[y][i] - in3);\
686 f= error_new - error_in3*4;\
691 left= top[i]= old - new;\
692 last_new[y][i]= new;\
693 last_in3[y][i]= in3;\
695 acc+= acc + (new&1);\
697 ((uint8_t*)dest)[0]= acc;\
705 case PIX_FMT_YUYV422:\
707 ((uint8_t*)dest)[2*i2+0]= Y1;\
708 ((uint8_t*)dest)[2*i2+1]= U;\
709 ((uint8_t*)dest)[2*i2+2]= Y2;\
710 ((uint8_t*)dest)[2*i2+3]= V;\
713 case PIX_FMT_UYVY422:\
715 ((uint8_t*)dest)[2*i2+0]= U;\
716 ((uint8_t*)dest)[2*i2+1]= Y1;\
717 ((uint8_t*)dest)[2*i2+2]= V;\
718 ((uint8_t*)dest)[2*i2+3]= Y2;\
724 static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
725 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
726 uint8_t *dest, int dstW, int y)
733 YSCALE_YUV_2_RGBX_C(uint32_t)
734 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
735 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
739 YSCALE_YUV_2_RGBX_C(uint8_t)
740 ((uint8_t*)dest)[0]= r[Y1];
741 ((uint8_t*)dest)[1]= g[Y1];
742 ((uint8_t*)dest)[2]= b[Y1];
743 ((uint8_t*)dest)[3]= r[Y2];
744 ((uint8_t*)dest)[4]= g[Y2];
745 ((uint8_t*)dest)[5]= b[Y2];
750 YSCALE_YUV_2_RGBX_C(uint8_t)
751 ((uint8_t*)dest)[0]= b[Y1];
752 ((uint8_t*)dest)[1]= g[Y1];
753 ((uint8_t*)dest)[2]= r[Y1];
754 ((uint8_t*)dest)[3]= b[Y2];
755 ((uint8_t*)dest)[4]= g[Y2];
756 ((uint8_t*)dest)[5]= r[Y2];
763 const int dr1= dither_2x2_8[y&1 ][0];
764 const int dg1= dither_2x2_4[y&1 ][0];
765 const int db1= dither_2x2_8[(y&1)^1][0];
766 const int dr2= dither_2x2_8[y&1 ][1];
767 const int dg2= dither_2x2_4[y&1 ][1];
768 const int db2= dither_2x2_8[(y&1)^1][1];
769 YSCALE_YUV_2_RGBX_C(uint16_t)
770 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
771 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
778 const int dr1= dither_2x2_8[y&1 ][0];
779 const int dg1= dither_2x2_8[y&1 ][1];
780 const int db1= dither_2x2_8[(y&1)^1][0];
781 const int dr2= dither_2x2_8[y&1 ][1];
782 const int dg2= dither_2x2_8[y&1 ][0];
783 const int db2= dither_2x2_8[(y&1)^1][1];
784 YSCALE_YUV_2_RGBX_C(uint16_t)
785 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
786 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
793 const uint8_t * const d64= dither_8x8_73[y&7];
794 const uint8_t * const d32= dither_8x8_32[y&7];
795 YSCALE_YUV_2_RGBX_C(uint8_t)
796 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
797 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
804 const uint8_t * const d64= dither_8x8_73 [y&7];
805 const uint8_t * const d128=dither_8x8_220[y&7];
806 YSCALE_YUV_2_RGBX_C(uint8_t)
807 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]
808 +((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);
812 case PIX_FMT_RGB4_BYTE:
813 case PIX_FMT_BGR4_BYTE:
815 const uint8_t * const d64= dither_8x8_73 [y&7];
816 const uint8_t * const d128=dither_8x8_220[y&7];
817 YSCALE_YUV_2_RGBX_C(uint8_t)
818 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
819 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
823 case PIX_FMT_MONOBLACK:
825 const uint8_t * const d128=dither_8x8_220[y&7];
826 uint8_t *g= c->table_gU[128] + c->table_gV[128];
828 for (i=0; i<dstW-1; i+=2){
833 for (j=0; j<lumFilterSize; j++)
835 Y1 += lumSrc[j][i] * lumFilter[j];
836 Y2 += lumSrc[j][i+1] * lumFilter[j];
847 acc+= acc + g[Y1+d128[(i+0)&7]];
848 acc+= acc + g[Y2+d128[(i+1)&7]];
850 ((uint8_t*)dest)[0]= acc;
856 case PIX_FMT_YUYV422:
857 YSCALE_YUV_2_PACKEDX_C(void)
858 ((uint8_t*)dest)[2*i2+0]= Y1;
859 ((uint8_t*)dest)[2*i2+1]= U;
860 ((uint8_t*)dest)[2*i2+2]= Y2;
861 ((uint8_t*)dest)[2*i2+3]= V;
864 case PIX_FMT_UYVY422:
865 YSCALE_YUV_2_PACKEDX_C(void)
866 ((uint8_t*)dest)[2*i2+0]= U;
867 ((uint8_t*)dest)[2*i2+1]= Y1;
868 ((uint8_t*)dest)[2*i2+2]= V;
869 ((uint8_t*)dest)[2*i2+3]= Y2;
876 //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
878 #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT) || !defined(CONFIG_GPL)
883 #if (defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
884 #define COMPILE_ALTIVEC
885 #endif //HAVE_ALTIVEC
886 #endif //ARCH_POWERPC
888 #if defined(ARCH_X86)
890 #if ((defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
894 #if (defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
898 #if ((defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
899 #define COMPILE_3DNOW
901 #endif //ARCH_X86 || ARCH_X86_64
912 #define RENAME(a) a ## _C
913 #include "swscale_template.c"
916 #ifdef COMPILE_ALTIVEC
919 #define RENAME(a) a ## _altivec
920 #include "swscale_template.c"
923 #if defined(ARCH_X86)
932 #define RENAME(a) a ## _X86
933 #include "swscale_template.c"
941 #define RENAME(a) a ## _MMX
942 #include "swscale_template.c"
951 #define RENAME(a) a ## _MMX2
952 #include "swscale_template.c"
961 #define RENAME(a) a ## _3DNow
962 #include "swscale_template.c"
965 #endif //ARCH_X86 || ARCH_X86_64
967 // minor note: the HAVE_xyz is messed up after that line so don't use it
969 static double getSplineCoeff(double a, double b, double c, double d, double dist)
971 // printf("%f %f %f %f %f\n", a,b,c,d,dist);
972 if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;
973 else return getSplineCoeff( 0.0,
980 static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
981 int srcW, int dstW, int filterAlign, int one, int flags,
982 SwsVector *srcFilter, SwsVector *dstFilter, double param[2])
989 double *filter2=NULL;
990 #if defined(ARCH_X86)
991 if (flags & SWS_CPU_CAPS_MMX)
992 asm volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)
995 // Note the +1 is for the MMXscaler which reads over the end
996 *filterPos = av_malloc((dstW+1)*sizeof(int16_t));
998 if (FFABS(xInc - 0x10000) <10) // unscaled
1002 filter= av_malloc(dstW*sizeof(double)*filterSize);
1003 for (i=0; i<dstW*filterSize; i++) filter[i]=0;
1005 for (i=0; i<dstW; i++)
1007 filter[i*filterSize]=1;
1012 else if (flags&SWS_POINT) // lame looking point sampling mode
1017 filter= av_malloc(dstW*sizeof(double)*filterSize);
1019 xDstInSrc= xInc/2 - 0x8000;
1020 for (i=0; i<dstW; i++)
1022 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
1024 (*filterPos)[i]= xx;
1029 else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
1033 if (flags&SWS_BICUBIC) filterSize= 4;
1034 else if (flags&SWS_X ) filterSize= 4;
1035 else filterSize= 2; // SWS_BILINEAR / SWS_AREA
1036 filter= av_malloc(dstW*sizeof(double)*filterSize);
1038 xDstInSrc= xInc/2 - 0x8000;
1039 for (i=0; i<dstW; i++)
1041 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
1044 (*filterPos)[i]= xx;
1045 //Bilinear upscale / linear interpolate / Area averaging
1046 for (j=0; j<filterSize; j++)
1048 double d= FFABS((xx<<16) - xDstInSrc)/(double)(1<<16);
1049 double coeff= 1.0 - d;
1050 if (coeff<0) coeff=0;
1051 filter[i*filterSize + j]= coeff;
1060 double sizeFactor, filterSizeInSrc;
1061 const double xInc1= (double)xInc / (double)(1<<16);
1063 if (flags&SWS_BICUBIC) sizeFactor= 4.0;
1064 else if (flags&SWS_X) sizeFactor= 8.0;
1065 else if (flags&SWS_AREA) sizeFactor= 1.0; //downscale only, for upscale it is bilinear
1066 else if (flags&SWS_GAUSS) sizeFactor= 8.0; // infinite ;)
1067 else if (flags&SWS_LANCZOS) sizeFactor= param[0] != SWS_PARAM_DEFAULT ? 2.0*param[0] : 6.0;
1068 else if (flags&SWS_SINC) sizeFactor= 20.0; // infinite ;)
1069 else if (flags&SWS_SPLINE) sizeFactor= 20.0; // infinite ;)
1070 else if (flags&SWS_BILINEAR) sizeFactor= 2.0;
1072 sizeFactor= 0.0; //GCC warning killer
1076 if (xInc1 <= 1.0) filterSizeInSrc= sizeFactor; // upscale
1077 else filterSizeInSrc= sizeFactor*srcW / (double)dstW;
1079 filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible
1080 if (filterSize > srcW-2) filterSize=srcW-2;
1082 filter= av_malloc(dstW*sizeof(double)*filterSize);
1084 xDstInSrc= xInc1 / 2.0 - 0.5;
1085 for (i=0; i<dstW; i++)
1087 int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);
1089 (*filterPos)[i]= xx;
1090 for (j=0; j<filterSize; j++)
1092 double d= FFABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;
1094 if (flags & SWS_BICUBIC)
1096 double B= param[0] != SWS_PARAM_DEFAULT ? param[0] : 0.0;
1097 double C= param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6;
1100 coeff = (12-9*B-6*C)*d*d*d + (-18+12*B+6*C)*d*d + 6-2*B;
1102 coeff = (-B-6*C)*d*d*d + (6*B+30*C)*d*d + (-12*B-48*C)*d +8*B+24*C;
1106 /* else if (flags & SWS_X)
1108 double p= param ? param*0.01 : 0.3;
1109 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1110 coeff*= pow(2.0, - p*d*d);
1112 else if (flags & SWS_X)
1114 double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;
1120 if (coeff<0.0) coeff= -pow(-coeff, A);
1121 else coeff= pow( coeff, A);
1122 coeff= coeff*0.5 + 0.5;
1124 else if (flags & SWS_AREA)
1126 double srcPixelSize= 1.0/xInc1;
1127 if (d + srcPixelSize/2 < 0.5) coeff= 1.0;
1128 else if (d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
1131 else if (flags & SWS_GAUSS)
1133 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1134 coeff = pow(2.0, - p*d*d);
1136 else if (flags & SWS_SINC)
1138 coeff = d ? sin(d*PI)/(d*PI) : 1.0;
1140 else if (flags & SWS_LANCZOS)
1142 double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;
1143 coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;
1146 else if (flags & SWS_BILINEAR)
1149 if (coeff<0) coeff=0;
1151 else if (flags & SWS_SPLINE)
1153 double p=-2.196152422706632;
1154 coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);
1157 coeff= 0.0; //GCC warning killer
1161 filter[i*filterSize + j]= coeff;
1168 /* apply src & dst Filter to filter -> filter2
1171 ASSERT(filterSize>0)
1172 filter2Size= filterSize;
1173 if (srcFilter) filter2Size+= srcFilter->length - 1;
1174 if (dstFilter) filter2Size+= dstFilter->length - 1;
1175 ASSERT(filter2Size>0)
1176 filter2= av_malloc(filter2Size*dstW*sizeof(double));
1178 for (i=0; i<dstW; i++)
1181 SwsVector scaleFilter;
1184 scaleFilter.coeff= filter + i*filterSize;
1185 scaleFilter.length= filterSize;
1187 if (srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);
1188 else outVec= &scaleFilter;
1190 ASSERT(outVec->length == filter2Size)
1193 for (j=0; j<outVec->length; j++)
1195 filter2[i*filter2Size + j]= outVec->coeff[j];
1198 (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
1200 if (outVec != &scaleFilter) sws_freeVec(outVec);
1202 av_free(filter); filter=NULL;
1204 /* try to reduce the filter-size (step1 find size and shift left) */
1205 // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).
1207 for (i=dstW-1; i>=0; i--)
1209 int min= filter2Size;
1213 /* get rid off near zero elements on the left by shifting left */
1214 for (j=0; j<filter2Size; j++)
1217 cutOff += FFABS(filter2[i*filter2Size]);
1219 if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1221 /* preserve monotonicity because the core can't handle the filter otherwise */
1222 if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
1224 // Move filter coeffs left
1225 for (k=1; k<filter2Size; k++)
1226 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
1227 filter2[i*filter2Size + k - 1]= 0.0;
1232 /* count near zeros on the right */
1233 for (j=filter2Size-1; j>0; j--)
1235 cutOff += FFABS(filter2[i*filter2Size + j]);
1237 if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;
1241 if (min>minFilterSize) minFilterSize= min;
1244 if (flags & SWS_CPU_CAPS_ALTIVEC) {
1245 // we can handle the special case 4,
1246 // so we don't want to go to the full 8
1247 if (minFilterSize < 5)
1250 // we really don't want to waste our time
1251 // doing useless computation, so fall-back on
1252 // the scalar C code for very small filter.
1253 // vectorizing is worth it only if you have
1254 // decent-sized vector.
1255 if (minFilterSize < 3)
1259 if (flags & SWS_CPU_CAPS_MMX) {
1260 // special case for unscaled vertical filtering
1261 if (minFilterSize == 1 && filterAlign == 2)
1265 ASSERT(minFilterSize > 0)
1266 filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
1267 ASSERT(filterSize > 0)
1268 filter= av_malloc(filterSize*dstW*sizeof(double));
1269 if (filterSize >= MAX_FILTER_SIZE)
1271 *outFilterSize= filterSize;
1273 if (flags&SWS_PRINT_INFO)
1274 av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
1275 /* try to reduce the filter-size (step2 reduce it) */
1276 for (i=0; i<dstW; i++)
1280 for (j=0; j<filterSize; j++)
1282 if (j>=filter2Size) filter[i*filterSize + j]= 0.0;
1283 else filter[i*filterSize + j]= filter2[i*filter2Size + j];
1286 av_free(filter2); filter2=NULL;
1289 //FIXME try to align filterpos if possible
1292 for (i=0; i<dstW; i++)
1295 if ((*filterPos)[i] < 0)
1297 // Move filter coeffs left to compensate for filterPos
1298 for (j=1; j<filterSize; j++)
1300 int left= FFMAX(j + (*filterPos)[i], 0);
1301 filter[i*filterSize + left] += filter[i*filterSize + j];
1302 filter[i*filterSize + j]=0;
1307 if ((*filterPos)[i] + filterSize > srcW)
1309 int shift= (*filterPos)[i] + filterSize - srcW;
1310 // Move filter coeffs right to compensate for filterPos
1311 for (j=filterSize-2; j>=0; j--)
1313 int right= FFMIN(j + shift, filterSize-1);
1314 filter[i*filterSize +right] += filter[i*filterSize +j];
1315 filter[i*filterSize +j]=0;
1317 (*filterPos)[i]= srcW - filterSize;
1321 // Note the +1 is for the MMXscaler which reads over the end
1322 /* align at 16 for AltiVec (needed by hScale_altivec_real) */
1323 *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));
1325 /* Normalize & Store in outFilter */
1326 for (i=0; i<dstW; i++)
1333 for (j=0; j<filterSize; j++)
1335 sum+= filter[i*filterSize + j];
1338 for (j=0; j<*outFilterSize; j++)
1340 double v= filter[i*filterSize + j]*scale + error;
1341 int intV= floor(v + 0.5);
1342 (*outFilter)[i*(*outFilterSize) + j]= intV;
1347 (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
1348 for (i=0; i<*outFilterSize; i++)
1350 int j= dstW*(*outFilterSize);
1351 (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
1359 static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
1362 long imm8OfPShufW1A;
1363 long imm8OfPShufW2A;
1364 long fragmentLengthA;
1366 long imm8OfPShufW1B;
1367 long imm8OfPShufW2B;
1368 long fragmentLengthB;
1373 // create an optimized horizontal scaling routine
1381 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
1382 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
1383 "movd 1(%%"REG_c", %%"REG_S"), %%mm1 \n\t"
1384 "punpcklbw %%mm7, %%mm1 \n\t"
1385 "punpcklbw %%mm7, %%mm0 \n\t"
1386 "pshufw $0xFF, %%mm1, %%mm1 \n\t"
1388 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1390 "psubw %%mm1, %%mm0 \n\t"
1391 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
1392 "pmullw %%mm3, %%mm0 \n\t"
1393 "psllw $7, %%mm1 \n\t"
1394 "paddw %%mm1, %%mm0 \n\t"
1396 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
1398 "add $8, %%"REG_a" \n\t"
1402 "lea " LOCAL_MANGLE(0b) ", %0 \n\t"
1403 "lea " LOCAL_MANGLE(1b) ", %1 \n\t"
1404 "lea " LOCAL_MANGLE(2b) ", %2 \n\t"
1409 "lea " LOCAL_MANGLE(9b) ", %3 \n\t"
1413 :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
1414 "=r" (fragmentLengthA)
1421 "movq (%%"REG_d", %%"REG_a"), %%mm3 \n\t"
1422 "movd (%%"REG_c", %%"REG_S"), %%mm0 \n\t"
1423 "punpcklbw %%mm7, %%mm0 \n\t"
1424 "pshufw $0xFF, %%mm0, %%mm1 \n\t"
1426 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1428 "psubw %%mm1, %%mm0 \n\t"
1429 "movl 8(%%"REG_b", %%"REG_a"), %%esi \n\t"
1430 "pmullw %%mm3, %%mm0 \n\t"
1431 "psllw $7, %%mm1 \n\t"
1432 "paddw %%mm1, %%mm0 \n\t"
1434 "movq %%mm0, (%%"REG_D", %%"REG_a") \n\t"
1436 "add $8, %%"REG_a" \n\t"
1440 "lea " LOCAL_MANGLE(0b) ", %0 \n\t"
1441 "lea " LOCAL_MANGLE(1b) ", %1 \n\t"
1442 "lea " LOCAL_MANGLE(2b) ", %2 \n\t"
1447 "lea " LOCAL_MANGLE(9b) ", %3 \n\t"
1451 :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
1452 "=r" (fragmentLengthB)
1455 xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1458 for (i=0; i<dstW/numSplits; i++)
1465 int b=((xpos+xInc)>>16) - xx;
1466 int c=((xpos+xInc*2)>>16) - xx;
1467 int d=((xpos+xInc*3)>>16) - xx;
1469 filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
1470 filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
1471 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
1472 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
1477 int maxShift= 3-(d+1);
1480 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
1482 funnyCode[fragmentPos + imm8OfPShufW1B]=
1483 (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
1484 funnyCode[fragmentPos + imm8OfPShufW2B]=
1485 a | (b<<2) | (c<<4) | (d<<6);
1487 if (i+3>=dstW) shift=maxShift; //avoid overread
1488 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
1490 if (shift && i>=shift)
1492 funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
1493 funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
1494 filterPos[i/2]-=shift;
1497 fragmentPos+= fragmentLengthB;
1504 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
1506 funnyCode[fragmentPos + imm8OfPShufW1A]=
1507 funnyCode[fragmentPos + imm8OfPShufW2A]=
1508 a | (b<<2) | (c<<4) | (d<<6);
1510 if (i+4>=dstW) shift=maxShift; //avoid overread
1511 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
1513 if (shift && i>=shift)
1515 funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
1516 funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
1517 filterPos[i/2]-=shift;
1520 fragmentPos+= fragmentLengthA;
1523 funnyCode[fragmentPos]= RET;
1527 filterPos[i/2]= xpos>>16; // needed to jump to the next part
1529 #endif /* COMPILE_MMX2 */
1531 static void globalInit(void){
1532 // generating tables:
1534 for (i=0; i<768; i++){
1535 int c= av_clip_uint8(i-256);
1540 static SwsFunc getSwsFunc(int flags){
1542 #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)
1543 #if defined(ARCH_X86)
1544 // ordered per speed fastest first
1545 if (flags & SWS_CPU_CAPS_MMX2)
1546 return swScale_MMX2;
1547 else if (flags & SWS_CPU_CAPS_3DNOW)
1548 return swScale_3DNow;
1549 else if (flags & SWS_CPU_CAPS_MMX)
1556 if (flags & SWS_CPU_CAPS_ALTIVEC)
1557 return swScale_altivec;
1562 #endif /* defined(ARCH_X86) */
1563 #else //RUNTIME_CPUDETECT
1565 return swScale_MMX2;
1566 #elif defined (HAVE_3DNOW)
1567 return swScale_3DNow;
1568 #elif defined (HAVE_MMX)
1570 #elif defined (HAVE_ALTIVEC)
1571 return swScale_altivec;
1575 #endif //!RUNTIME_CPUDETECT
1578 static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1579 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1580 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1582 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1583 memcpy(dst, src[0], srcSliceH*dstStride[0]);
1587 uint8_t *srcPtr= src[0];
1588 uint8_t *dstPtr= dst;
1589 for (i=0; i<srcSliceH; i++)
1591 memcpy(dstPtr, srcPtr, c->srcW);
1592 srcPtr+= srcStride[0];
1593 dstPtr+= dstStride[0];
1596 dst = dstParam[1] + dstStride[1]*srcSliceY/2;
1597 if (c->dstFormat == PIX_FMT_NV12)
1598 interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);
1600 interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);
1605 static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1606 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1607 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1609 yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1614 static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1615 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1616 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1618 yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1623 /* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */
1624 static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1625 int srcSliceH, uint8_t* dst[], int dstStride[]){
1626 const int srcFormat= c->srcFormat;
1627 const int dstFormat= c->dstFormat;
1628 const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;
1629 const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;
1630 const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1631 const int dstId= fmt_depth(dstFormat) >> 2;
1632 void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
1635 if ( (isBGR(srcFormat) && isBGR(dstFormat))
1636 || (isRGB(srcFormat) && isRGB(dstFormat))){
1637 switch(srcId | (dstId<<4)){
1638 case 0x34: conv= rgb16to15; break;
1639 case 0x36: conv= rgb24to15; break;
1640 case 0x38: conv= rgb32to15; break;
1641 case 0x43: conv= rgb15to16; break;
1642 case 0x46: conv= rgb24to16; break;
1643 case 0x48: conv= rgb32to16; break;
1644 case 0x63: conv= rgb15to24; break;
1645 case 0x64: conv= rgb16to24; break;
1646 case 0x68: conv= rgb32to24; break;
1647 case 0x83: conv= rgb15to32; break;
1648 case 0x84: conv= rgb16to32; break;
1649 case 0x86: conv= rgb24to32; break;
1650 default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1651 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1653 }else if ( (isBGR(srcFormat) && isRGB(dstFormat))
1654 || (isRGB(srcFormat) && isBGR(dstFormat))){
1655 switch(srcId | (dstId<<4)){
1656 case 0x33: conv= rgb15tobgr15; break;
1657 case 0x34: conv= rgb16tobgr15; break;
1658 case 0x36: conv= rgb24tobgr15; break;
1659 case 0x38: conv= rgb32tobgr15; break;
1660 case 0x43: conv= rgb15tobgr16; break;
1661 case 0x44: conv= rgb16tobgr16; break;
1662 case 0x46: conv= rgb24tobgr16; break;
1663 case 0x48: conv= rgb32tobgr16; break;
1664 case 0x63: conv= rgb15tobgr24; break;
1665 case 0x64: conv= rgb16tobgr24; break;
1666 case 0x66: conv= rgb24tobgr24; break;
1667 case 0x68: conv= rgb32tobgr24; break;
1668 case 0x83: conv= rgb15tobgr32; break;
1669 case 0x84: conv= rgb16tobgr32; break;
1670 case 0x86: conv= rgb24tobgr32; break;
1671 case 0x88: conv= rgb32tobgr32; break;
1672 default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1673 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
1676 av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1677 sws_format_name(srcFormat), sws_format_name(dstFormat));
1682 if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
1683 conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1687 uint8_t *srcPtr= src[0];
1688 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1690 for (i=0; i<srcSliceH; i++)
1692 conv(srcPtr, dstPtr, c->srcW*srcBpp);
1693 srcPtr+= srcStride[0];
1694 dstPtr+= dstStride[0];
1701 static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1702 int srcSliceH, uint8_t* dst[], int dstStride[]){
1706 dst[0]+ srcSliceY *dstStride[0],
1707 dst[1]+(srcSliceY>>1)*dstStride[1],
1708 dst[2]+(srcSliceY>>1)*dstStride[2],
1710 dstStride[0], dstStride[1], srcStride[0]);
1714 static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1715 int srcSliceH, uint8_t* dst[], int dstStride[]){
1719 if (srcStride[0]==dstStride[0] && srcStride[0] > 0)
1720 memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
1722 uint8_t *srcPtr= src[0];
1723 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1725 for (i=0; i<srcSliceH; i++)
1727 memcpy(dstPtr, srcPtr, c->srcW);
1728 srcPtr+= srcStride[0];
1729 dstPtr+= dstStride[0];
1733 if (c->dstFormat==PIX_FMT_YUV420P){
1734 planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
1735 planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
1737 planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
1738 planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
1743 /* unscaled copy like stuff (assumes nearly identical formats) */
1744 static int simpleCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1745 int srcSliceH, uint8_t* dst[], int dstStride[]){
1747 if (isPacked(c->srcFormat))
1749 if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1750 memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1754 uint8_t *srcPtr= src[0];
1755 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1758 /* universal length finder */
1759 while(length+c->srcW <= FFABS(dstStride[0])
1760 && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
1763 for (i=0; i<srcSliceH; i++)
1765 memcpy(dstPtr, srcPtr, length);
1766 srcPtr+= srcStride[0];
1767 dstPtr+= dstStride[0];
1772 { /* Planar YUV or gray */
1774 for (plane=0; plane<3; plane++)
1776 int length= plane==0 ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
1777 int y= plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1778 int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1780 if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
1782 if (!isGray(c->dstFormat))
1783 memset(dst[plane], 128, dstStride[plane]*height);
1787 if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)
1788 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1792 uint8_t *srcPtr= src[plane];
1793 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1794 for (i=0; i<height; i++)
1796 memcpy(dstPtr, srcPtr, length);
1797 srcPtr+= srcStride[plane];
1798 dstPtr+= dstStride[plane];
1807 static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1808 int srcSliceH, uint8_t* dst[], int dstStride[]){
1810 int length= c->srcW;
1812 int height= srcSliceH;
1814 uint8_t *srcPtr= src[0];
1815 uint8_t *dstPtr= dst[0] + dstStride[0]*y;
1817 if (!isGray(c->dstFormat)){
1818 int height= -((-srcSliceH)>>c->chrDstVSubSample);
1819 memset(dst[1], 128, dstStride[1]*height);
1820 memset(dst[2], 128, dstStride[2]*height);
1822 if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;
1823 for (i=0; i<height; i++)
1825 for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
1826 srcPtr+= srcStride[0];
1827 dstPtr+= dstStride[0];
1832 static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1833 int srcSliceH, uint8_t* dst[], int dstStride[]){
1835 int length= c->srcW;
1837 int height= srcSliceH;
1839 uint8_t *srcPtr= src[0];
1840 uint8_t *dstPtr= dst[0] + dstStride[0]*y;
1841 for (i=0; i<height; i++)
1843 for (j=0; j<length; j++)
1845 dstPtr[j<<1] = srcPtr[j];
1846 dstPtr[(j<<1)+1] = srcPtr[j];
1848 srcPtr+= srcStride[0];
1849 dstPtr+= dstStride[0];
1854 static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1855 int srcSliceH, uint8_t* dst[], int dstStride[]){
1857 int length= c->srcW;
1859 int height= srcSliceH;
1861 uint16_t *srcPtr= src[0];
1862 uint16_t *dstPtr= dst[0] + dstStride[0]*y/2;
1863 for (i=0; i<height; i++)
1865 for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);
1866 srcPtr+= srcStride[0]/2;
1867 dstPtr+= dstStride[0]/2;
1873 static void getSubSampleFactors(int *h, int *v, int format){
1875 case PIX_FMT_UYVY422:
1876 case PIX_FMT_YUYV422:
1880 case PIX_FMT_YUV420P:
1881 case PIX_FMT_YUVA420P:
1882 case PIX_FMT_GRAY16BE:
1883 case PIX_FMT_GRAY16LE:
1884 case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented
1890 case PIX_FMT_YUV440P:
1894 case PIX_FMT_YUV410P:
1898 case PIX_FMT_YUV444P:
1902 case PIX_FMT_YUV422P:
1906 case PIX_FMT_YUV411P:
1917 static uint16_t roundToInt16(int64_t f){
1918 int r= (f + (1<<15))>>16;
1919 if (r<-0x7FFF) return 0x8000;
1920 else if (r> 0x7FFF) return 0x7FFF;
1925 * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]
1926 * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235
1927 * @return -1 if not supported
1929 int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){
1930 int64_t crv = inv_table[0];
1931 int64_t cbu = inv_table[1];
1932 int64_t cgu = -inv_table[2];
1933 int64_t cgv = -inv_table[3];
1937 if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1938 memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
1939 memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
1941 c->brightness= brightness;
1942 c->contrast = contrast;
1943 c->saturation= saturation;
1944 c->srcRange = srcRange;
1945 c->dstRange = dstRange;
1947 c->uOffset= 0x0400040004000400LL;
1948 c->vOffset= 0x0400040004000400LL;
1954 crv= (crv*224) / 255;
1955 cbu= (cbu*224) / 255;
1956 cgu= (cgu*224) / 255;
1957 cgv= (cgv*224) / 255;
1960 cy = (cy *contrast )>>16;
1961 crv= (crv*contrast * saturation)>>32;
1962 cbu= (cbu*contrast * saturation)>>32;
1963 cgu= (cgu*contrast * saturation)>>32;
1964 cgv= (cgv*contrast * saturation)>>32;
1966 oy -= 256*brightness;
1968 c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
1969 c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
1970 c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
1971 c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
1972 c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
1973 c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
1975 yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
1978 #ifdef COMPILE_ALTIVEC
1979 if (c->flags & SWS_CPU_CAPS_ALTIVEC)
1980 yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);
1986 * @return -1 if not supported
1988 int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){
1989 if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
1991 *inv_table = c->srcColorspaceTable;
1992 *table = c->dstColorspaceTable;
1993 *srcRange = c->srcRange;
1994 *dstRange = c->dstRange;
1995 *brightness= c->brightness;
1996 *contrast = c->contrast;
1997 *saturation= c->saturation;
2002 static int handle_jpeg(int *format)
2005 case PIX_FMT_YUVJ420P:
2006 *format = PIX_FMT_YUV420P;
2008 case PIX_FMT_YUVJ422P:
2009 *format = PIX_FMT_YUV422P;
2011 case PIX_FMT_YUVJ444P:
2012 *format = PIX_FMT_YUV444P;
2014 case PIX_FMT_YUVJ440P:
2015 *format = PIX_FMT_YUV440P;
2022 SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
2023 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){
2027 int usesVFilter, usesHFilter;
2028 int unscaled, needsDither;
2029 int srcRange, dstRange;
2030 SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
2031 #if defined(ARCH_X86)
2032 if (flags & SWS_CPU_CAPS_MMX)
2033 asm volatile("emms\n\t"::: "memory");
2036 #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off
2037 flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
2039 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
2040 #elif defined (HAVE_3DNOW)
2041 flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
2042 #elif defined (HAVE_MMX)
2043 flags |= SWS_CPU_CAPS_MMX;
2044 #elif defined (HAVE_ALTIVEC)
2045 flags |= SWS_CPU_CAPS_ALTIVEC;
2046 #elif defined (ARCH_BFIN)
2047 flags |= SWS_CPU_CAPS_BFIN;
2049 #endif /* RUNTIME_CPUDETECT */
2050 if (clip_table[512] != 255) globalInit();
2051 if (!rgb15to16) sws_rgb2rgb_init(flags);
2053 unscaled = (srcW == dstW && srcH == dstH);
2054 needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
2055 && (fmt_depth(dstFormat))<24
2056 && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
2058 srcRange = handle_jpeg(&srcFormat);
2059 dstRange = handle_jpeg(&dstFormat);
2061 if (!isSupportedIn(srcFormat))
2063 av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));
2066 if (!isSupportedOut(dstFormat))
2068 av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));
2073 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
2075 av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
2076 srcW, srcH, dstW, dstH);
2079 if(srcW > VOFW || dstW > VOFW){
2080 av_log(NULL, AV_LOG_ERROR, "swScaler: Compile time max width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");
2084 if (!dstFilter) dstFilter= &dummyFilter;
2085 if (!srcFilter) srcFilter= &dummyFilter;
2087 c= av_mallocz(sizeof(SwsContext));
2089 c->av_class = &sws_context_class;
2094 c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
2095 c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
2097 c->dstFormat= dstFormat;
2098 c->srcFormat= srcFormat;
2099 c->vRounder= 4* 0x0001000100010001ULL;
2101 usesHFilter= usesVFilter= 0;
2102 if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;
2103 if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;
2104 if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;
2105 if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;
2106 if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;
2107 if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;
2108 if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;
2109 if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;
2111 getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
2112 getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
2114 // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
2115 if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
2117 // drop some chroma lines if the user wants it
2118 c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
2119 c->chrSrcVSubSample+= c->vChrDrop;
2121 // drop every 2. pixel for chroma calculation unless user wants full chroma
2122 if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)
2123 && srcFormat!=PIX_FMT_RGB8 && srcFormat!=PIX_FMT_BGR8
2124 && srcFormat!=PIX_FMT_RGB4 && srcFormat!=PIX_FMT_BGR4
2125 && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE)
2126 c->chrSrcHSubSample=1;
2129 c->param[0] = param[0];
2130 c->param[1] = param[1];
2133 c->param[1] = SWS_PARAM_DEFAULT;
2136 c->chrIntHSubSample= c->chrDstHSubSample;
2137 c->chrIntVSubSample= c->chrSrcVSubSample;
2139 // Note the -((-x)>>y) is so that we always round toward +inf.
2140 c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
2141 c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
2142 c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
2143 c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
2145 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);
2147 /* unscaled special Cases */
2148 if (unscaled && !usesHFilter && !usesVFilter)
2151 if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))
2153 c->swScale= PlanarToNV12Wrapper;
2157 if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat)))
2159 c->swScale= yuv2rgb_get_func_ptr(c);
2163 if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P)
2165 c->swScale= yvu9toyv12Wrapper;
2169 if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P)
2170 c->swScale= bgr24toyv12Wrapper;
2172 /* rgb/bgr -> rgb/bgr (no dither needed forms) */
2173 if ( (isBGR(srcFormat) || isRGB(srcFormat))
2174 && (isBGR(dstFormat) || isRGB(dstFormat))
2175 && srcFormat != PIX_FMT_BGR8 && dstFormat != PIX_FMT_BGR8
2176 && srcFormat != PIX_FMT_RGB8 && dstFormat != PIX_FMT_RGB8
2177 && srcFormat != PIX_FMT_BGR4 && dstFormat != PIX_FMT_BGR4
2178 && srcFormat != PIX_FMT_RGB4 && dstFormat != PIX_FMT_RGB4
2179 && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
2180 && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
2181 && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
2183 c->swScale= rgb2rgbWrapper;
2185 /* LQ converters if -sws 0 or -sws 4*/
2186 if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
2187 /* rgb/bgr -> rgb/bgr (dither needed forms) */
2188 if ( (isBGR(srcFormat) || isRGB(srcFormat))
2189 && (isBGR(dstFormat) || isRGB(dstFormat))
2191 c->swScale= rgb2rgbWrapper;
2194 if (srcFormat == PIX_FMT_YUV420P &&
2195 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422))
2197 if (dstFormat == PIX_FMT_YUYV422)
2198 c->swScale= PlanarToYuy2Wrapper;
2200 c->swScale= PlanarToUyvyWrapper;
2204 #ifdef COMPILE_ALTIVEC
2205 if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
2206 ((srcFormat == PIX_FMT_YUV420P &&
2207 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422)))) {
2208 // unscaled YV12 -> packed YUV, we want speed
2209 if (dstFormat == PIX_FMT_YUYV422)
2210 c->swScale= yv12toyuy2_unscaled_altivec;
2212 c->swScale= yv12touyvy_unscaled_altivec;
2217 if ( srcFormat == dstFormat
2218 || (isPlanarYUV(srcFormat) && isGray(dstFormat))
2219 || (isPlanarYUV(dstFormat) && isGray(srcFormat)))
2221 c->swScale= simpleCopy;
2224 /* gray16{le,be} conversions */
2225 if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))
2227 c->swScale= gray16togray;
2229 if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))
2231 c->swScale= graytogray16;
2233 if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))
2235 c->swScale= gray16swap;
2239 if (flags & SWS_CPU_CAPS_BFIN)
2240 ff_bfin_get_unscaled_swscale (c);
2244 if (flags&SWS_PRINT_INFO)
2245 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",
2246 sws_format_name(srcFormat), sws_format_name(dstFormat));
2251 if (flags & SWS_CPU_CAPS_MMX2)
2253 c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
2254 if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
2256 if (flags&SWS_PRINT_INFO)
2257 av_log(c, AV_LOG_INFO, "output Width is not a multiple of 32 -> no MMX2 scaler\n");
2259 if (usesHFilter) c->canMMX2BeUsed=0;
2264 c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
2265 c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
2267 // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
2268 // but only for the FAST_BILINEAR mode otherwise do correct scaling
2269 // n-2 is the last chrominance sample available
2270 // this is not perfect, but no one should notice the difference, the more correct variant
2271 // would be like the vertical one, but that would require some special code for the
2272 // first and last pixel
2273 if (flags&SWS_FAST_BILINEAR)
2275 if (c->canMMX2BeUsed)
2280 //we don't use the x86asm scaler if mmx is available
2281 else if (flags & SWS_CPU_CAPS_MMX)
2283 c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
2284 c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
2288 /* precalculate horizontal scaler filter coefficients */
2290 const int filterAlign=
2291 (flags & SWS_CPU_CAPS_MMX) ? 4 :
2292 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2295 initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
2296 srcW , dstW, filterAlign, 1<<14,
2297 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2298 srcFilter->lumH, dstFilter->lumH, c->param);
2299 initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
2300 c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
2301 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2302 srcFilter->chrH, dstFilter->chrH, c->param);
2304 #define MAX_FUNNY_CODE_SIZE 10000
2305 #if defined(COMPILE_MMX2)
2306 // can't downscale !!!
2307 if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
2309 #ifdef MAP_ANONYMOUS
2310 c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2311 c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
2313 c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2314 c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);
2317 c->lumMmx2Filter = av_malloc((dstW /8+8)*sizeof(int16_t));
2318 c->chrMmx2Filter = av_malloc((c->chrDstW /4+8)*sizeof(int16_t));
2319 c->lumMmx2FilterPos= av_malloc((dstW /2/8+8)*sizeof(int32_t));
2320 c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));
2322 initMMX2HScaler( dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
2323 initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
2325 #endif /* defined(COMPILE_MMX2) */
2326 } // Init Horizontal stuff
2330 /* precalculate vertical scaler filter coefficients */
2332 const int filterAlign=
2333 (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :
2334 (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
2337 initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
2338 srcH , dstH, filterAlign, (1<<12)-4,
2339 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
2340 srcFilter->lumV, dstFilter->lumV, c->param);
2341 initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
2342 c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,
2343 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
2344 srcFilter->chrV, dstFilter->chrV, c->param);
2347 c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
2348 c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);
2350 for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
2352 short *p = (short *)&c->vYCoeffsBank[i];
2354 p[j] = c->vLumFilter[i];
2357 for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {
2359 short *p = (short *)&c->vCCoeffsBank[i];
2361 p[j] = c->vChrFilter[i];
2366 // Calculate Buffer Sizes so that they won't run out while handling these damn slices
2367 c->vLumBufSize= c->vLumFilterSize;
2368 c->vChrBufSize= c->vChrFilterSize;
2369 for (i=0; i<dstH; i++)
2371 int chrI= i*c->chrDstH / dstH;
2372 int nextSlice= FFMAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
2373 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
2375 nextSlice>>= c->chrSrcVSubSample;
2376 nextSlice<<= c->chrSrcVSubSample;
2377 if (c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
2378 c->vLumBufSize= nextSlice - c->vLumFilterPos[i];
2379 if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
2380 c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
2383 // allocate pixbufs (we use dynamic allocation because otherwise we would need to
2384 c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));
2385 c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));
2386 //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)
2387 /* align at 16 bytes for AltiVec */
2388 for (i=0; i<c->vLumBufSize; i++)
2389 c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);
2390 for (i=0; i<c->vChrBufSize; i++)
2391 c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);
2393 //try to avoid drawing green stuff between the right end and the stride end
2394 for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);
2396 assert(2*VOFW == VOF);
2398 ASSERT(c->chrDstH <= dstH)
2400 if (flags&SWS_PRINT_INFO)
2403 char *dither= " dithered";
2407 if (flags&SWS_FAST_BILINEAR)
2408 av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");
2409 else if (flags&SWS_BILINEAR)
2410 av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");
2411 else if (flags&SWS_BICUBIC)
2412 av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");
2413 else if (flags&SWS_X)
2414 av_log(c, AV_LOG_INFO, "Experimental scaler, ");
2415 else if (flags&SWS_POINT)
2416 av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");
2417 else if (flags&SWS_AREA)
2418 av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");
2419 else if (flags&SWS_BICUBLIN)
2420 av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");
2421 else if (flags&SWS_GAUSS)
2422 av_log(c, AV_LOG_INFO, "Gaussian scaler, ");
2423 else if (flags&SWS_SINC)
2424 av_log(c, AV_LOG_INFO, "Sinc scaler, ");
2425 else if (flags&SWS_LANCZOS)
2426 av_log(c, AV_LOG_INFO, "Lanczos scaler, ");
2427 else if (flags&SWS_SPLINE)
2428 av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");
2430 av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");
2432 if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)
2433 av_log(c, AV_LOG_INFO, "from %s to%s %s ",
2434 sws_format_name(srcFormat), dither, sws_format_name(dstFormat));
2436 av_log(c, AV_LOG_INFO, "from %s to %s ",
2437 sws_format_name(srcFormat), sws_format_name(dstFormat));
2439 if (flags & SWS_CPU_CAPS_MMX2)
2440 av_log(c, AV_LOG_INFO, "using MMX2\n");
2441 else if (flags & SWS_CPU_CAPS_3DNOW)
2442 av_log(c, AV_LOG_INFO, "using 3DNOW\n");
2443 else if (flags & SWS_CPU_CAPS_MMX)
2444 av_log(c, AV_LOG_INFO, "using MMX\n");
2445 else if (flags & SWS_CPU_CAPS_ALTIVEC)
2446 av_log(c, AV_LOG_INFO, "using AltiVec\n");
2448 av_log(c, AV_LOG_INFO, "using C\n");
2451 if (flags & SWS_PRINT_INFO)
2453 if (flags & SWS_CPU_CAPS_MMX)
2455 if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
2456 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
2459 if (c->hLumFilterSize==4)
2460 av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");
2461 else if (c->hLumFilterSize==8)
2462 av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");
2464 av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");
2466 if (c->hChrFilterSize==4)
2467 av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");
2468 else if (c->hChrFilterSize==8)
2469 av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");
2471 av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");
2476 #if defined(ARCH_X86)
2477 av_log(c, AV_LOG_VERBOSE, "using X86-Asm scaler for horizontal scaling\n");
2479 if (flags & SWS_FAST_BILINEAR)
2480 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");
2482 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");
2485 if (isPlanarYUV(dstFormat))
2487 if (c->vLumFilterSize==1)
2488 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2490 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2494 if (c->vLumFilterSize==1 && c->vChrFilterSize==2)
2495 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
2496 " 2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2497 else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)
2498 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2500 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2503 if (dstFormat==PIX_FMT_BGR24)
2504 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 Converter\n",
2505 (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
2506 else if (dstFormat==PIX_FMT_RGB32)
2507 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2508 else if (dstFormat==PIX_FMT_BGR565)
2509 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2510 else if (dstFormat==PIX_FMT_BGR555)
2511 av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
2513 av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
2515 if (flags & SWS_PRINT_INFO)
2517 av_log(c, AV_LOG_DEBUG, "Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2518 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
2519 av_log(c, AV_LOG_DEBUG, "Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
2520 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
2523 c->swScale= getSwsFunc(flags);
2528 * swscale wrapper, so we don't need to export the SwsContext.
2529 * assumes planar YUV to be in YUV order instead of YVU
2531 int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2532 int srcSliceH, uint8_t* dst[], int dstStride[]){
2534 uint8_t* src2[4]= {src[0], src[1], src[2]};
2536 if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
2537 av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
2540 if (c->sliceDir == 0) {
2541 if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
2544 if (c->srcFormat == PIX_FMT_PAL8){
2545 for (i=0; i<256; i++){
2546 int p= ((uint32_t*)(src[1]))[i];
2547 int r= (p>>16)&0xFF;
2548 int g= (p>> 8)&0xFF;
2550 int y= av_clip_uint8(((RY*r + GY*g + BY*b)>>RGB2YUV_SHIFT) + 16 );
2551 int u= av_clip_uint8(((RU*r + GU*g + BU*b)>>RGB2YUV_SHIFT) + 128);
2552 int v= av_clip_uint8(((RV*r + GV*g + BV*b)>>RGB2YUV_SHIFT) + 128);
2553 pal[i]= y + (u<<8) + (v<<16);
2558 // copy strides, so they can safely be modified
2559 if (c->sliceDir == 1) {
2560 // slices go from top to bottom
2561 int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};
2562 int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};
2563 return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
2565 // slices go from bottom to top => we flip the image internally
2566 uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],
2567 dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],
2568 dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};
2569 int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};
2570 int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};
2572 src2[0] += (srcSliceH-1)*srcStride[0];
2573 if (c->srcFormat != PIX_FMT_PAL8)
2574 src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
2575 src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
2577 return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
2582 * swscale wrapper, so we don't need to export the SwsContext
2584 int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
2585 int srcSliceH, uint8_t* dst[], int dstStride[]){
2586 return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
2589 SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
2590 float lumaSharpen, float chromaSharpen,
2591 float chromaHShift, float chromaVShift,
2594 SwsFilter *filter= av_malloc(sizeof(SwsFilter));
2596 if (lumaGBlur!=0.0){
2597 filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
2598 filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
2600 filter->lumH= sws_getIdentityVec();
2601 filter->lumV= sws_getIdentityVec();
2604 if (chromaGBlur!=0.0){
2605 filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
2606 filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
2608 filter->chrH= sws_getIdentityVec();
2609 filter->chrV= sws_getIdentityVec();
2612 if (chromaSharpen!=0.0){
2613 SwsVector *id= sws_getIdentityVec();
2614 sws_scaleVec(filter->chrH, -chromaSharpen);
2615 sws_scaleVec(filter->chrV, -chromaSharpen);
2616 sws_addVec(filter->chrH, id);
2617 sws_addVec(filter->chrV, id);
2621 if (lumaSharpen!=0.0){
2622 SwsVector *id= sws_getIdentityVec();
2623 sws_scaleVec(filter->lumH, -lumaSharpen);
2624 sws_scaleVec(filter->lumV, -lumaSharpen);
2625 sws_addVec(filter->lumH, id);
2626 sws_addVec(filter->lumV, id);
2630 if (chromaHShift != 0.0)
2631 sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
2633 if (chromaVShift != 0.0)
2634 sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
2636 sws_normalizeVec(filter->chrH, 1.0);
2637 sws_normalizeVec(filter->chrV, 1.0);
2638 sws_normalizeVec(filter->lumH, 1.0);
2639 sws_normalizeVec(filter->lumV, 1.0);
2641 if (verbose) sws_printVec(filter->chrH);
2642 if (verbose) sws_printVec(filter->lumH);
2648 * returns a normalized gaussian curve used to filter stuff
2649 * quality=3 is high quality, lowwer is lowwer quality
2651 SwsVector *sws_getGaussianVec(double variance, double quality){
2652 const int length= (int)(variance*quality + 0.5) | 1;
2654 double *coeff= av_malloc(length*sizeof(double));
2655 double middle= (length-1)*0.5;
2656 SwsVector *vec= av_malloc(sizeof(SwsVector));
2659 vec->length= length;
2661 for (i=0; i<length; i++)
2663 double dist= i-middle;
2664 coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);
2667 sws_normalizeVec(vec, 1.0);
2672 SwsVector *sws_getConstVec(double c, int length){
2674 double *coeff= av_malloc(length*sizeof(double));
2675 SwsVector *vec= av_malloc(sizeof(SwsVector));
2678 vec->length= length;
2680 for (i=0; i<length; i++)
2687 SwsVector *sws_getIdentityVec(void){
2688 return sws_getConstVec(1.0, 1);
2691 double sws_dcVec(SwsVector *a){
2695 for (i=0; i<a->length; i++)
2701 void sws_scaleVec(SwsVector *a, double scalar){
2704 for (i=0; i<a->length; i++)
2705 a->coeff[i]*= scalar;
2708 void sws_normalizeVec(SwsVector *a, double height){
2709 sws_scaleVec(a, height/sws_dcVec(a));
2712 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){
2713 int length= a->length + b->length - 1;
2714 double *coeff= av_malloc(length*sizeof(double));
2716 SwsVector *vec= av_malloc(sizeof(SwsVector));
2719 vec->length= length;
2721 for (i=0; i<length; i++) coeff[i]= 0.0;
2723 for (i=0; i<a->length; i++)
2725 for (j=0; j<b->length; j++)
2727 coeff[i+j]+= a->coeff[i]*b->coeff[j];
2734 static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){
2735 int length= FFMAX(a->length, b->length);
2736 double *coeff= av_malloc(length*sizeof(double));
2738 SwsVector *vec= av_malloc(sizeof(SwsVector));
2741 vec->length= length;
2743 for (i=0; i<length; i++) coeff[i]= 0.0;
2745 for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2746 for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
2751 static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){
2752 int length= FFMAX(a->length, b->length);
2753 double *coeff= av_malloc(length*sizeof(double));
2755 SwsVector *vec= av_malloc(sizeof(SwsVector));
2758 vec->length= length;
2760 for (i=0; i<length; i++) coeff[i]= 0.0;
2762 for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
2763 for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
2768 /* shift left / or right if "shift" is negative */
2769 static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){
2770 int length= a->length + FFABS(shift)*2;
2771 double *coeff= av_malloc(length*sizeof(double));
2773 SwsVector *vec= av_malloc(sizeof(SwsVector));
2776 vec->length= length;
2778 for (i=0; i<length; i++) coeff[i]= 0.0;
2780 for (i=0; i<a->length; i++)
2782 coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
2788 void sws_shiftVec(SwsVector *a, int shift){
2789 SwsVector *shifted= sws_getShiftedVec(a, shift);
2791 a->coeff= shifted->coeff;
2792 a->length= shifted->length;
2796 void sws_addVec(SwsVector *a, SwsVector *b){
2797 SwsVector *sum= sws_sumVec(a, b);
2799 a->coeff= sum->coeff;
2800 a->length= sum->length;
2804 void sws_subVec(SwsVector *a, SwsVector *b){
2805 SwsVector *diff= sws_diffVec(a, b);
2807 a->coeff= diff->coeff;
2808 a->length= diff->length;
2812 void sws_convVec(SwsVector *a, SwsVector *b){
2813 SwsVector *conv= sws_getConvVec(a, b);
2815 a->coeff= conv->coeff;
2816 a->length= conv->length;
2820 SwsVector *sws_cloneVec(SwsVector *a){
2821 double *coeff= av_malloc(a->length*sizeof(double));
2823 SwsVector *vec= av_malloc(sizeof(SwsVector));
2826 vec->length= a->length;
2828 for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];
2833 void sws_printVec(SwsVector *a){
2839 for (i=0; i<a->length; i++)
2840 if (a->coeff[i]>max) max= a->coeff[i];
2842 for (i=0; i<a->length; i++)
2843 if (a->coeff[i]<min) min= a->coeff[i];
2847 for (i=0; i<a->length; i++)
2849 int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
2850 av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);
2851 for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");
2852 av_log(NULL, AV_LOG_DEBUG, "|\n");
2856 void sws_freeVec(SwsVector *a){
2864 void sws_freeFilter(SwsFilter *filter){
2865 if (!filter) return;
2867 if (filter->lumH) sws_freeVec(filter->lumH);
2868 if (filter->lumV) sws_freeVec(filter->lumV);
2869 if (filter->chrH) sws_freeVec(filter->chrH);
2870 if (filter->chrV) sws_freeVec(filter->chrV);
2875 void sws_freeContext(SwsContext *c){
2881 for (i=0; i<c->vLumBufSize; i++)
2883 av_free(c->lumPixBuf[i]);
2884 c->lumPixBuf[i]=NULL;
2886 av_free(c->lumPixBuf);
2892 for (i=0; i<c->vChrBufSize; i++)
2894 av_free(c->chrPixBuf[i]);
2895 c->chrPixBuf[i]=NULL;
2897 av_free(c->chrPixBuf);
2901 av_free(c->vLumFilter);
2902 c->vLumFilter = NULL;
2903 av_free(c->vChrFilter);
2904 c->vChrFilter = NULL;
2905 av_free(c->hLumFilter);
2906 c->hLumFilter = NULL;
2907 av_free(c->hChrFilter);
2908 c->hChrFilter = NULL;
2910 av_free(c->vYCoeffsBank);
2911 c->vYCoeffsBank = NULL;
2912 av_free(c->vCCoeffsBank);
2913 c->vCCoeffsBank = NULL;
2916 av_free(c->vLumFilterPos);
2917 c->vLumFilterPos = NULL;
2918 av_free(c->vChrFilterPos);
2919 c->vChrFilterPos = NULL;
2920 av_free(c->hLumFilterPos);
2921 c->hLumFilterPos = NULL;
2922 av_free(c->hChrFilterPos);
2923 c->hChrFilterPos = NULL;
2925 #if defined(ARCH_X86) && defined(CONFIG_GPL)
2926 #ifdef MAP_ANONYMOUS
2927 if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);
2928 if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);
2930 av_free(c->funnyYCode);
2931 av_free(c->funnyUVCode);
2934 c->funnyUVCode=NULL;
2935 #endif /* defined(ARCH_X86) */
2937 av_free(c->lumMmx2Filter);
2938 c->lumMmx2Filter=NULL;
2939 av_free(c->chrMmx2Filter);
2940 c->chrMmx2Filter=NULL;
2941 av_free(c->lumMmx2FilterPos);
2942 c->lumMmx2FilterPos=NULL;
2943 av_free(c->chrMmx2FilterPos);
2944 c->chrMmx2FilterPos=NULL;
2945 av_free(c->yuvTable);
2952 * Checks if context is valid or reallocs a new one instead.
2953 * If context is NULL, just calls sws_getContext() to get a new one.
2954 * Otherwise, checks if the parameters are the same already saved in context.
2955 * If that is the case, returns the current context.
2956 * Otherwise, frees context and gets a new one.
2958 * Be warned that srcFilter, dstFilter are not checked, they are
2959 * asumed to remain valid.
2961 struct SwsContext *sws_getCachedContext(struct SwsContext *context,
2962 int srcW, int srcH, int srcFormat,
2963 int dstW, int dstH, int dstFormat, int flags,
2964 SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)
2966 static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};
2969 param = default_param;
2972 if (context->srcW != srcW || context->srcH != srcH ||
2973 context->srcFormat != srcFormat ||
2974 context->dstW != dstW || context->dstH != dstH ||
2975 context->dstFormat != dstFormat || context->flags != flags ||
2976 context->param[0] != param[0] || context->param[1] != param[1])
2978 sws_freeContext(context);
2983 return sws_getContext(srcW, srcH, srcFormat,
2984 dstW, dstH, dstFormat, flags,
2985 srcFilter, dstFilter, param);