2 Copyright (C) 2001-2002 Michael Niedermayer <michaelni@gmx.at>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 supported Input formats: YV12, I420, IYUV, YUY2, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8, Y800
21 supported output formats: YV12, I420, IYUV, BGR15, BGR16, BGR24, BGR32 (grayscale soon too)
22 BGR15/16 support dithering
24 unscaled special converters
25 YV12/I420/IYUV -> BGR15/BGR16/BGR24/BGR32
26 YV12/I420/IYUV -> YV12/I420/IYUV
27 YUY2/BGR15/BGR16/BGR24/BGR32/RGB24/RGB32 -> same format
28 BGR24 -> BGR32 & RGB24 -> RGB32
29 BGR32 -> BGR24 & RGB32 -> RGB24
34 tested special converters
40 untested special converters
41 YV12/I420 -> BGR15/BGR24/BGR32 (its the yuv2rgb stuff, so it should be ok)
42 YV12/I420 -> YV12/I420
43 YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
44 BGR24 -> BGR32 & RGB24 -> RGB32
45 BGR32 -> BGR24 & RGB32 -> RGB24
53 #include "../config.h"
54 #include "../mangle.h"
62 #include "../cpudetect.h"
64 #include "../libvo/img_format.h"
66 #include "../libvo/fastmemcpy.h"
67 #include "../mp_msg.h"
75 //#define WORDS_BIGENDIAN
78 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
80 #define RET 0xC3 //near return opcode for X86
83 #define ASSERT(x) assert(x);
91 #define PI 3.14159265358979323846
94 //FIXME replace this with something faster
95 #define isPlanarYUV(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420)
96 #define isYUV(x) ((x)==IMGFMT_YUY2 || isPlanarYUV(x))
97 #define isHalfChrV(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420)
98 #define isHalfChrH(x) ((x)==IMGFMT_YUY2 || (x)==IMGFMT_YV12 || (x)==IMGFMT_I420)
99 #define isPacked(x) ((x)==IMGFMT_YUY2 || ((x)&IMGFMT_BGR_MASK)==IMGFMT_BGR || ((x)&IMGFMT_RGB_MASK)==IMGFMT_RGB)
100 #define isGray(x) ((x)==IMGFMT_Y800)
101 #define isSupportedIn(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 || (x)==IMGFMT_YUY2 \
102 || (x)==IMGFMT_BGR32|| (x)==IMGFMT_BGR24|| (x)==IMGFMT_BGR16|| (x)==IMGFMT_BGR15\
103 || (x)==IMGFMT_RGB32|| (x)==IMGFMT_RGB24\
105 #define isSupportedOut(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_I420 \
106 || (x)==IMGFMT_BGR32|| (x)==IMGFMT_BGR24|| (x)==IMGFMT_BGR16|| (x)==IMGFMT_BGR15)
107 #define isBGR(x) ((x)==IMGFMT_BGR32|| (x)==IMGFMT_BGR24|| (x)==IMGFMT_BGR16|| (x)==IMGFMT_BGR15)
109 #define RGB2YUV_SHIFT 16
110 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
111 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
112 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
113 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
114 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
115 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
116 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
117 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
118 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
120 extern int verbose; // defined in mplayer.c
123 Special versions: fast Y 1:1 scaling (no interpolation in y direction)
126 more intelligent missalignment avoidance for the horizontal scaler
127 write special vertical cubic upscale version
128 Optimize C code (yv12 / minmax)
129 add support for packed pixel yuv input & output
130 add support for Y8 output
131 optimize bgr24 & bgr32
132 add BGR4 output support
133 write special BGR->BGR scaler
134 deglobalize yuv2rgb*.c
137 #define ABS(a) ((a) > 0 ? (a) : (-(a)))
138 #define MIN(a,b) ((a) > (b) ? (b) : (a))
139 #define MAX(a,b) ((a) < (b) ? (b) : (a))
142 #define CAN_COMPILE_X86_ASM
145 #ifdef CAN_COMPILE_X86_ASM
146 static uint64_t __attribute__((aligned(8))) yCoeff= 0x2568256825682568LL;
147 static uint64_t __attribute__((aligned(8))) vrCoeff= 0x3343334333433343LL;
148 static uint64_t __attribute__((aligned(8))) ubCoeff= 0x40cf40cf40cf40cfLL;
149 static uint64_t __attribute__((aligned(8))) vgCoeff= 0xE5E2E5E2E5E2E5E2LL;
150 static uint64_t __attribute__((aligned(8))) ugCoeff= 0xF36EF36EF36EF36ELL;
151 static uint64_t __attribute__((aligned(8))) bF8= 0xF8F8F8F8F8F8F8F8LL;
152 static uint64_t __attribute__((aligned(8))) bFC= 0xFCFCFCFCFCFCFCFCLL;
153 static uint64_t __attribute__((aligned(8))) w400= 0x0400040004000400LL;
154 static uint64_t __attribute__((aligned(8))) w80= 0x0080008000800080LL;
155 static uint64_t __attribute__((aligned(8))) w10= 0x0010001000100010LL;
156 static uint64_t __attribute__((aligned(8))) w02= 0x0002000200020002LL;
157 static uint64_t __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
158 static uint64_t __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
159 static uint64_t __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
160 static uint64_t __attribute__((aligned(8))) bm01010101=0x00FF00FF00FF00FFLL;
162 static volatile uint64_t __attribute__((aligned(8))) b5Dither;
163 static volatile uint64_t __attribute__((aligned(8))) g5Dither;
164 static volatile uint64_t __attribute__((aligned(8))) g6Dither;
165 static volatile uint64_t __attribute__((aligned(8))) r5Dither;
167 static uint64_t __attribute__((aligned(8))) dither4[2]={
168 0x0103010301030103LL,
169 0x0200020002000200LL,};
171 static uint64_t __attribute__((aligned(8))) dither8[2]={
172 0x0602060206020602LL,
173 0x0004000400040004LL,};
175 static uint64_t __attribute__((aligned(8))) b16Mask= 0x001F001F001F001FLL;
176 static uint64_t __attribute__((aligned(8))) g16Mask= 0x07E007E007E007E0LL;
177 static uint64_t __attribute__((aligned(8))) r16Mask= 0xF800F800F800F800LL;
178 static uint64_t __attribute__((aligned(8))) b15Mask= 0x001F001F001F001FLL;
179 static uint64_t __attribute__((aligned(8))) g15Mask= 0x03E003E003E003E0LL;
180 static uint64_t __attribute__((aligned(8))) r15Mask= 0x7C007C007C007C00LL;
182 static uint64_t __attribute__((aligned(8))) M24A= 0x00FF0000FF0000FFLL;
183 static uint64_t __attribute__((aligned(8))) M24B= 0xFF0000FF0000FF00LL;
184 static uint64_t __attribute__((aligned(8))) M24C= 0x0000FF0000FF0000LL;
187 static const uint64_t bgr2YCoeff __attribute__((aligned(8))) = 0x000000210041000DULL;
188 static const uint64_t bgr2UCoeff __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
189 static const uint64_t bgr2VCoeff __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
191 static const uint64_t bgr2YCoeff __attribute__((aligned(8))) = 0x000020E540830C8BULL;
192 static const uint64_t bgr2UCoeff __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
193 static const uint64_t bgr2VCoeff __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
195 static const uint64_t bgr2YOffset __attribute__((aligned(8))) = 0x1010101010101010ULL;
196 static const uint64_t bgr2UVOffset __attribute__((aligned(8)))= 0x8080808080808080ULL;
197 static const uint64_t w1111 __attribute__((aligned(8))) = 0x0001000100010001ULL;
200 static uint64_t __attribute__((aligned(8))) asm_yalpha1;
201 static uint64_t __attribute__((aligned(8))) asm_uvalpha1;
204 // clipping helper table for C implementations:
205 static unsigned char clip_table[768];
207 static unsigned short clip_table16b[768];
208 static unsigned short clip_table16g[768];
209 static unsigned short clip_table16r[768];
210 static unsigned short clip_table15b[768];
211 static unsigned short clip_table15g[768];
212 static unsigned short clip_table15r[768];
214 // yuv->rgb conversion tables:
215 static int yuvtab_2568[256];
216 static int yuvtab_3343[256];
217 static int yuvtab_0c92[256];
218 static int yuvtab_1a1e[256];
219 static int yuvtab_40cf[256];
220 // Needed for cubic scaler to catch overflows
221 static int clip_yuvtab_2568[768];
222 static int clip_yuvtab_3343[768];
223 static int clip_yuvtab_0c92[768];
224 static int clip_yuvtab_1a1e[768];
225 static int clip_yuvtab_40cf[768];
227 //global sws_flags from the command line
231 SwsFilter src_filter= {NULL, NULL, NULL, NULL};
233 float sws_lum_gblur= 0.0;
234 float sws_chr_gblur= 0.0;
235 int sws_chr_vshift= 0;
236 int sws_chr_hshift= 0;
237 float sws_chr_sharpen= 0.0;
238 float sws_lum_sharpen= 0.0;
240 /* cpuCaps combined from cpudetect and whats actually compiled in
241 (if there is no support for something compiled in it wont appear here) */
242 static CpuCaps cpuCaps;
244 void (*swScale)(SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
245 int srcSliceH, uint8_t* dst[], int dstStride[])=NULL;
247 static SwsVector *getConvVec(SwsVector *a, SwsVector *b);
249 #ifdef CAN_COMPILE_X86_ASM
250 void in_asm_used_var_warning_killer()
252 volatile int i= yCoeff+vrCoeff+ubCoeff+vgCoeff+ugCoeff+bF8+bFC+w400+w80+w10+
253 bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+asm_yalpha1+ asm_uvalpha1+
254 M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0]+bm01010101;
259 static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
260 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
261 uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW)
263 //FIXME Optimize (just quickly writen not opti..)
265 for(i=0; i<dstW; i++)
269 for(j=0; j<lumFilterSize; j++)
270 val += lumSrc[j][i] * lumFilter[j];
272 dest[i]= MIN(MAX(val>>19, 0), 255);
276 for(i=0; i<(dstW>>1); i++)
281 for(j=0; j<chrFilterSize; j++)
283 u += chrSrc[j][i] * chrFilter[j];
284 v += chrSrc[j][i + 2048] * chrFilter[j];
287 uDest[i]= MIN(MAX(u>>19, 0), 255);
288 vDest[i]= MIN(MAX(v>>19, 0), 255);
292 static inline void yuv2rgbXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
293 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
294 uint8_t *dest, int dstW, int dstFormat)
296 if(dstFormat==IMGFMT_BGR32)
299 #ifdef WORDS_BIGENDIAN
302 for(i=0; i<(dstW>>1); i++){
309 for(j=0; j<lumFilterSize; j++)
311 Y1 += lumSrc[j][2*i] * lumFilter[j];
312 Y2 += lumSrc[j][2*i+1] * lumFilter[j];
314 for(j=0; j<chrFilterSize; j++)
316 U += chrSrc[j][i] * chrFilter[j];
317 V += chrSrc[j][i+2048] * chrFilter[j];
319 Y1= clip_yuvtab_2568[ (Y1>>19) + 256 ];
320 Y2= clip_yuvtab_2568[ (Y2>>19) + 256 ];
324 Cb= clip_yuvtab_40cf[U+ 256];
325 Cg= clip_yuvtab_1a1e[V+ 256] + yuvtab_0c92[U+ 256];
326 Cr= clip_yuvtab_3343[V+ 256];
328 dest[8*i+0]=clip_table[((Y1 + Cb) >>13)];
329 dest[8*i+1]=clip_table[((Y1 + Cg) >>13)];
330 dest[8*i+2]=clip_table[((Y1 + Cr) >>13)];
332 dest[8*i+4]=clip_table[((Y2 + Cb) >>13)];
333 dest[8*i+5]=clip_table[((Y2 + Cg) >>13)];
334 dest[8*i+6]=clip_table[((Y2 + Cr) >>13)];
337 else if(dstFormat==IMGFMT_BGR24)
340 for(i=0; i<(dstW>>1); i++){
347 for(j=0; j<lumFilterSize; j++)
349 Y1 += lumSrc[j][2*i] * lumFilter[j];
350 Y2 += lumSrc[j][2*i+1] * lumFilter[j];
352 for(j=0; j<chrFilterSize; j++)
354 U += chrSrc[j][i] * chrFilter[j];
355 V += chrSrc[j][i+2048] * chrFilter[j];
357 Y1= clip_yuvtab_2568[ (Y1>>19) + 256 ];
358 Y2= clip_yuvtab_2568[ (Y2>>19) + 256 ];
362 Cb= clip_yuvtab_40cf[U+ 256];
363 Cg= clip_yuvtab_1a1e[V+ 256] + yuvtab_0c92[U+ 256];
364 Cr= clip_yuvtab_3343[V+ 256];
366 dest[0]=clip_table[((Y1 + Cb) >>13)];
367 dest[1]=clip_table[((Y1 + Cg) >>13)];
368 dest[2]=clip_table[((Y1 + Cr) >>13)];
370 dest[3]=clip_table[((Y2 + Cb) >>13)];
371 dest[4]=clip_table[((Y2 + Cg) >>13)];
372 dest[5]=clip_table[((Y2 + Cr) >>13)];
376 else if(dstFormat==IMGFMT_BGR16)
380 static int ditherb1=1<<14;
381 static int ditherg1=1<<13;
382 static int ditherr1=2<<14;
383 static int ditherb2=3<<14;
384 static int ditherg2=3<<13;
385 static int ditherr2=0<<14;
387 ditherb1 ^= (1^2)<<14;
388 ditherg1 ^= (1^2)<<13;
389 ditherr1 ^= (1^2)<<14;
390 ditherb2 ^= (3^0)<<14;
391 ditherg2 ^= (3^0)<<13;
392 ditherr2 ^= (3^0)<<14;
394 const int ditherb1=0;
395 const int ditherg1=0;
396 const int ditherr1=0;
397 const int ditherb2=0;
398 const int ditherg2=0;
399 const int ditherr2=0;
401 for(i=0; i<(dstW>>1); i++){
408 for(j=0; j<lumFilterSize; j++)
410 Y1 += lumSrc[j][2*i] * lumFilter[j];
411 Y2 += lumSrc[j][2*i+1] * lumFilter[j];
413 for(j=0; j<chrFilterSize; j++)
415 U += chrSrc[j][i] * chrFilter[j];
416 V += chrSrc[j][i+2048] * chrFilter[j];
418 Y1= clip_yuvtab_2568[ (Y1>>19) + 256 ];
419 Y2= clip_yuvtab_2568[ (Y2>>19) + 256 ];
423 Cb= clip_yuvtab_40cf[U+ 256];
424 Cg= clip_yuvtab_1a1e[V+ 256] + yuvtab_0c92[U+ 256];
425 Cr= clip_yuvtab_3343[V+ 256];
427 ((uint16_t*)dest)[2*i] =
428 clip_table16b[(Y1 + Cb + ditherb1) >>13] |
429 clip_table16g[(Y1 + Cg + ditherg1) >>13] |
430 clip_table16r[(Y1 + Cr + ditherr1) >>13];
432 ((uint16_t*)dest)[2*i+1] =
433 clip_table16b[(Y2 + Cb + ditherb2) >>13] |
434 clip_table16g[(Y2 + Cg + ditherg2) >>13] |
435 clip_table16r[(Y2 + Cr + ditherr2) >>13];
438 else if(dstFormat==IMGFMT_BGR15)
442 static int ditherb1=1<<14;
443 static int ditherg1=1<<14;
444 static int ditherr1=2<<14;
445 static int ditherb2=3<<14;
446 static int ditherg2=3<<14;
447 static int ditherr2=0<<14;
449 ditherb1 ^= (1^2)<<14;
450 ditherg1 ^= (1^2)<<14;
451 ditherr1 ^= (1^2)<<14;
452 ditherb2 ^= (3^0)<<14;
453 ditherg2 ^= (3^0)<<14;
454 ditherr2 ^= (3^0)<<14;
456 const int ditherb1=0;
457 const int ditherg1=0;
458 const int ditherr1=0;
459 const int ditherb2=0;
460 const int ditherg2=0;
461 const int ditherr2=0;
463 for(i=0; i<(dstW>>1); i++){
470 for(j=0; j<lumFilterSize; j++)
472 Y1 += lumSrc[j][2*i] * lumFilter[j];
473 Y2 += lumSrc[j][2*i+1] * lumFilter[j];
475 for(j=0; j<chrFilterSize; j++)
477 U += chrSrc[j][i] * chrFilter[j];
478 V += chrSrc[j][i+2048] * chrFilter[j];
480 Y1= clip_yuvtab_2568[ (Y1>>19) + 256 ];
481 Y2= clip_yuvtab_2568[ (Y2>>19) + 256 ];
485 Cb= clip_yuvtab_40cf[U+ 256];
486 Cg= clip_yuvtab_1a1e[V+ 256] + yuvtab_0c92[U+ 256];
487 Cr= clip_yuvtab_3343[V+ 256];
489 ((uint16_t*)dest)[2*i] =
490 clip_table15b[(Y1 + Cb + ditherb1) >>13] |
491 clip_table15g[(Y1 + Cg + ditherg1) >>13] |
492 clip_table15r[(Y1 + Cr + ditherr1) >>13];
494 ((uint16_t*)dest)[2*i+1] =
495 clip_table15b[(Y2 + Cb + ditherb2) >>13] |
496 clip_table15g[(Y2 + Cg + ditherg2) >>13] |
497 clip_table15r[(Y2 + Cr + ditherr2) >>13];
503 //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
505 #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT)
509 #ifdef CAN_COMPILE_X86_ASM
511 #if (defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
515 #if defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)
519 #if (defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
520 #define COMPILE_3DNOW
522 #endif //CAN_COMPILE_X86_ASM
532 #define RENAME(a) a ## _C
533 #include "swscale_template.c"
536 #ifdef CAN_COMPILE_X86_ASM
545 #define RENAME(a) a ## _X86
546 #include "swscale_template.c"
554 #define RENAME(a) a ## _MMX
555 #include "swscale_template.c"
564 #define RENAME(a) a ## _MMX2
565 #include "swscale_template.c"
574 #define RENAME(a) a ## _3DNow
575 #include "swscale_template.c"
578 #endif //CAN_COMPILE_X86_ASM
580 // minor note: the HAVE_xyz is messed up after that line so dont use it
583 // old global scaler, dont use for new code
584 // will use sws_flags from the command line
585 void SwScale_YV12slice(unsigned char* src[], int srcStride[], int srcSliceY ,
586 int srcSliceH, uint8_t* dst[], int dstStride, int dstbpp,
587 int srcW, int srcH, int dstW, int dstH){
589 static SwsContext *context=NULL;
591 int dstStride3[3]= {dstStride, dstStride>>1, dstStride>>1};
595 case 8 : dstFormat= IMGFMT_Y8; break;
596 case 12: dstFormat= IMGFMT_YV12; break;
597 case 15: dstFormat= IMGFMT_BGR15; break;
598 case 16: dstFormat= IMGFMT_BGR16; break;
599 case 24: dstFormat= IMGFMT_BGR24; break;
600 case 32: dstFormat= IMGFMT_BGR32; break;
604 if(!context) context=getSwsContextFromCmdLine(srcW, srcH, IMGFMT_YV12, dstW, dstH, dstFormat);
606 context->swScale(context, src, srcStride, srcSliceY, srcSliceH, dst, dstStride3);
609 // will use sws_flags & src_filter (from cmd line)
610 SwsContext *getSwsContextFromCmdLine(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat)
613 static int firstTime=1;
617 asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
622 flags= SWS_PRINT_INFO;
624 else if(verbose>1) flags= SWS_PRINT_INFO;
626 if(src_filter.lumH) freeVec(src_filter.lumH);
627 if(src_filter.lumV) freeVec(src_filter.lumV);
628 if(src_filter.chrH) freeVec(src_filter.chrH);
629 if(src_filter.chrV) freeVec(src_filter.chrV);
631 if(sws_lum_gblur!=0.0){
632 src_filter.lumH= getGaussianVec(sws_lum_gblur, 3.0);
633 src_filter.lumV= getGaussianVec(sws_lum_gblur, 3.0);
635 src_filter.lumH= getIdentityVec();
636 src_filter.lumV= getIdentityVec();
639 if(sws_chr_gblur!=0.0){
640 src_filter.chrH= getGaussianVec(sws_chr_gblur, 3.0);
641 src_filter.chrV= getGaussianVec(sws_chr_gblur, 3.0);
643 src_filter.chrH= getIdentityVec();
644 src_filter.chrV= getIdentityVec();
647 if(sws_chr_sharpen!=0.0){
648 SwsVector *g= getConstVec(-1.0, 3);
649 SwsVector *id= getConstVec(10.0/sws_chr_sharpen, 1);
652 convVec(src_filter.chrH, id);
653 convVec(src_filter.chrV, id);
658 if(sws_lum_sharpen!=0.0){
659 SwsVector *g= getConstVec(-1.0, 3);
660 SwsVector *id= getConstVec(10.0/sws_lum_sharpen, 1);
663 convVec(src_filter.lumH, id);
664 convVec(src_filter.lumV, id);
670 shiftVec(src_filter.chrH, sws_chr_hshift);
673 shiftVec(src_filter.chrV, sws_chr_vshift);
675 normalizeVec(src_filter.chrH, 1.0);
676 normalizeVec(src_filter.chrV, 1.0);
677 normalizeVec(src_filter.lumH, 1.0);
678 normalizeVec(src_filter.lumV, 1.0);
680 if(verbose > 1) printVec(src_filter.chrH);
681 if(verbose > 1) printVec(src_filter.lumH);
685 case 0: flags|= SWS_FAST_BILINEAR; break;
686 case 1: flags|= SWS_BILINEAR; break;
687 case 2: flags|= SWS_BICUBIC; break;
688 case 3: flags|= SWS_X; break;
689 case 4: flags|= SWS_POINT; break;
690 case 5: flags|= SWS_AREA; break;
691 default:flags|= SWS_BILINEAR; break;
694 return getSwsContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, &src_filter, NULL);
698 static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
699 int srcW, int dstW, int filterAlign, int one, int flags,
700 SwsVector *srcFilter, SwsVector *dstFilter)
707 double *filter2=NULL;
710 asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
713 // Note the +1 is for the MMXscaler which reads over the end
714 *filterPos = (int16_t*)memalign(8, (dstW+1)*sizeof(int16_t));
716 if(ABS(xInc - 0x10000) <10) // unscaled
720 filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
721 for(i=0; i<dstW*filterSize; i++) filter[i]=0;
723 for(i=0; i<dstW; i++)
725 filter[i*filterSize]=1;
730 else if(flags&SWS_POINT) // lame looking point sampling mode
735 filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
737 xDstInSrc= xInc/2 - 0x8000;
738 for(i=0; i<dstW; i++)
740 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
747 else if(xInc <= (1<<16) || (flags&SWS_FAST_BILINEAR)) // upscale
751 if (flags&SWS_BICUBIC) filterSize= 4;
752 else if(flags&SWS_X ) filterSize= 4;
753 else filterSize= 2; // SWS_BILINEAR / SWS_AREA
754 // printf("%d %d %d\n", filterSize, srcW, dstW);
755 filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
757 xDstInSrc= xInc/2 - 0x8000;
758 for(i=0; i<dstW; i++)
760 int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
764 if((flags & SWS_BICUBIC) || (flags & SWS_X))
766 double d= ABS(((xx+1)<<16) - xDstInSrc)/(double)(1<<16);
769 if(flags & SWS_BICUBIC){
770 // Equation is from VirtualDub
771 y1 = ( + A*d - 2.0*A*d*d + A*d*d*d);
772 y2 = (+ 1.0 - (A+3.0)*d*d + (A+2.0)*d*d*d);
773 y3 = ( - A*d + (2.0*A+3.0)*d*d - (A+2.0)*d*d*d);
774 y4 = ( + A*d*d - A*d*d*d);
776 // cubic interpolation (derived it myself)
777 y1 = ( -2.0*d + 3.0*d*d - 1.0*d*d*d)/6.0;
778 y2 = (6.0 -3.0*d - 6.0*d*d + 3.0*d*d*d)/6.0;
779 y3 = ( +6.0*d + 3.0*d*d - 3.0*d*d*d)/6.0;
780 y4 = ( -1.0*d + 1.0*d*d*d)/6.0;
783 // printf("%d %d %d \n", coeff, (int)d, xDstInSrc);
784 filter[i*filterSize + 0]= y1;
785 filter[i*filterSize + 1]= y2;
786 filter[i*filterSize + 2]= y3;
787 filter[i*filterSize + 3]= y4;
788 // printf("%1.3f %1.3f %1.3f %1.3f %1.3f\n",d , y1, y2, y3, y4);
792 //Bilinear upscale / linear interpolate / Area averaging
793 for(j=0; j<filterSize; j++)
795 double d= ABS((xx<<16) - xDstInSrc)/(double)(1<<16);
796 double coeff= 1.0 - d;
798 // printf("%d %d %d \n", coeff, (int)d, xDstInSrc);
799 filter[i*filterSize + j]= coeff;
811 if(flags&SWS_BICUBIC) filterSize= (int)ceil(1 + 4.0*srcW / (double)dstW);
812 else if(flags&SWS_X) filterSize= (int)ceil(1 + 4.0*srcW / (double)dstW);
813 else if(flags&SWS_AREA) filterSize= (int)ceil(1 + 1.0*srcW / (double)dstW);
814 else /* BILINEAR */ filterSize= (int)ceil(1 + 2.0*srcW / (double)dstW);
815 // printf("%d %d %d\n", *filterSize, srcW, dstW);
816 filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
818 xDstInSrc= xInc/2 - 0x8000;
819 for(i=0; i<dstW; i++)
821 int xx= (int)((double)xDstInSrc/(double)(1<<16) - (filterSize-1)*0.5 + 0.5);
824 for(j=0; j<filterSize; j++)
826 double d= ABS((xx<<16) - xDstInSrc)/(double)xInc;
828 if((flags & SWS_BICUBIC) || (flags & SWS_X))
832 // Equation is from VirtualDub
834 coeff = (1.0 - (A+3.0)*d*d + (A+2.0)*d*d*d);
836 coeff = (-4.0*A + 8.0*A*d - 5.0*A*d*d + A*d*d*d);
840 else if(flags & SWS_AREA)
842 double srcPixelSize= (1<<16)/(double)xInc;
843 if(d + srcPixelSize/2 < 0.5) coeff= 1.0;
844 else if(d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
852 // printf("%1.3f %2.3f %d \n", coeff, d, xDstInSrc);
853 filter[i*filterSize + j]= coeff;
860 /* apply src & dst Filter to filter -> filter2
864 filter2Size= filterSize;
865 if(srcFilter) filter2Size+= srcFilter->length - 1;
866 if(dstFilter) filter2Size+= dstFilter->length - 1;
867 ASSERT(filter2Size>0)
868 filter2= (double*)memalign(8, filter2Size*dstW*sizeof(double));
870 for(i=0; i<dstW; i++)
873 SwsVector scaleFilter;
876 scaleFilter.coeff= filter + i*filterSize;
877 scaleFilter.length= filterSize;
879 if(srcFilter) outVec= getConvVec(srcFilter, &scaleFilter);
880 else outVec= &scaleFilter;
882 ASSERT(outVec->length == filter2Size)
885 for(j=0; j<outVec->length; j++)
887 filter2[i*filter2Size + j]= outVec->coeff[j];
890 (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
892 if(outVec != &scaleFilter) freeVec(outVec);
894 free(filter); filter=NULL;
896 /* try to reduce the filter-size (step1 find size and shift left) */
897 // Assume its near normalized (*0.5 or *2.0 is ok but * 0.001 is not)
899 for(i=dstW-1; i>=0; i--)
901 int min= filter2Size;
905 /* get rid off near zero elements on the left by shifting left */
906 for(j=0; j<filter2Size; j++)
909 cutOff += ABS(filter2[i*filter2Size]);
911 if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
913 /* preserve Monotonicity because the core cant handle the filter otherwise */
914 if(i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
916 // Move filter coeffs left
917 for(k=1; k<filter2Size; k++)
918 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
919 filter2[i*filter2Size + k - 1]= 0.0;
924 /* count near zeros on the right */
925 for(j=filter2Size-1; j>0; j--)
927 cutOff += ABS(filter2[i*filter2Size + j]);
929 if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
933 if(min>minFilterSize) minFilterSize= min;
936 ASSERT(minFilterSize > 0)
937 filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
938 ASSERT(filterSize > 0)
939 filter= (double*)memalign(8, filterSize*dstW*sizeof(double));
940 *outFilterSize= filterSize;
942 if(flags&SWS_PRINT_INFO)
943 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);
944 /* try to reduce the filter-size (step2 reduce it) */
945 for(i=0; i<dstW; i++)
949 for(j=0; j<filterSize; j++)
951 if(j>=filter2Size) filter[i*filterSize + j]= 0.0;
952 else filter[i*filterSize + j]= filter2[i*filter2Size + j];
955 free(filter2); filter2=NULL;
958 //FIXME try to align filterpos if possible
961 for(i=0; i<dstW; i++)
964 if((*filterPos)[i] < 0)
966 // Move filter coeffs left to compensate for filterPos
967 for(j=1; j<filterSize; j++)
969 int left= MAX(j + (*filterPos)[i], 0);
970 filter[i*filterSize + left] += filter[i*filterSize + j];
971 filter[i*filterSize + j]=0;
976 if((*filterPos)[i] + filterSize > srcW)
978 int shift= (*filterPos)[i] + filterSize - srcW;
979 // Move filter coeffs right to compensate for filterPos
980 for(j=filterSize-2; j>=0; j--)
982 int right= MIN(j + shift, filterSize-1);
983 filter[i*filterSize +right] += filter[i*filterSize +j];
984 filter[i*filterSize +j]=0;
986 (*filterPos)[i]= srcW - filterSize;
990 // Note the +1 is for the MMXscaler which reads over the end
991 *outFilter= (int16_t*)memalign(8, *outFilterSize*(dstW+1)*sizeof(int16_t));
992 memset(*outFilter, 0, *outFilterSize*(dstW+1)*sizeof(int16_t));
994 /* Normalize & Store in outFilter */
995 for(i=0; i<dstW; i++)
1000 for(j=0; j<filterSize; j++)
1002 sum+= filter[i*filterSize + j];
1005 for(j=0; j<filterSize; j++)
1007 (*outFilter)[i*(*outFilterSize) + j]= (int)(filter[i*filterSize + j]*scale);
1011 (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
1012 for(i=0; i<*outFilterSize; i++)
1014 int j= dstW*(*outFilterSize);
1015 (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
1022 static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
1027 int fragmentLengthA;
1031 int fragmentLengthB;
1036 // create an optimized horizontal scaling routine
1044 "movq (%%edx, %%eax), %%mm3 \n\t"
1045 "movd (%%ecx, %%esi), %%mm0 \n\t"
1046 "movd 1(%%ecx, %%esi), %%mm1 \n\t"
1047 "punpcklbw %%mm7, %%mm1 \n\t"
1048 "punpcklbw %%mm7, %%mm0 \n\t"
1049 "pshufw $0xFF, %%mm1, %%mm1 \n\t"
1051 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1053 "psubw %%mm1, %%mm0 \n\t"
1054 "movl 8(%%ebx, %%eax), %%esi \n\t"
1055 "pmullw %%mm3, %%mm0 \n\t"
1056 "psllw $7, %%mm1 \n\t"
1057 "paddw %%mm1, %%mm0 \n\t"
1059 "movq %%mm0, (%%edi, %%eax) \n\t"
1061 "addl $8, %%eax \n\t"
1076 :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
1077 "=r" (fragmentLengthA)
1084 "movq (%%edx, %%eax), %%mm3 \n\t"
1085 "movd (%%ecx, %%esi), %%mm0 \n\t"
1086 "punpcklbw %%mm7, %%mm0 \n\t"
1087 "pshufw $0xFF, %%mm0, %%mm1 \n\t"
1089 "pshufw $0xFF, %%mm0, %%mm0 \n\t"
1091 "psubw %%mm1, %%mm0 \n\t"
1092 "movl 8(%%ebx, %%eax), %%esi \n\t"
1093 "pmullw %%mm3, %%mm0 \n\t"
1094 "psllw $7, %%mm1 \n\t"
1095 "paddw %%mm1, %%mm0 \n\t"
1097 "movq %%mm0, (%%edi, %%eax) \n\t"
1099 "addl $8, %%eax \n\t"
1114 :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
1115 "=r" (fragmentLengthB)
1118 xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
1121 for(i=0; i<dstW/numSplits; i++)
1128 int b=((xpos+xInc)>>16) - xx;
1129 int c=((xpos+xInc*2)>>16) - xx;
1130 int d=((xpos+xInc*3)>>16) - xx;
1132 filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
1133 filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
1134 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
1135 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
1140 int maxShift= 3-(d+1);
1143 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
1145 funnyCode[fragmentPos + imm8OfPShufW1B]=
1146 (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
1147 funnyCode[fragmentPos + imm8OfPShufW2B]=
1148 a | (b<<2) | (c<<4) | (d<<6);
1150 if(i+3>=dstW) shift=maxShift; //avoid overread
1151 else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
1153 if(shift && i>=shift)
1155 funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
1156 funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
1157 filterPos[i/2]-=shift;
1160 fragmentPos+= fragmentLengthB;
1167 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
1169 funnyCode[fragmentPos + imm8OfPShufW1A]=
1170 funnyCode[fragmentPos + imm8OfPShufW2A]=
1171 a | (b<<2) | (c<<4) | (d<<6);
1173 if(i+4>=dstW) shift=maxShift; //avoid overread
1174 else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
1176 if(shift && i>=shift)
1178 funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
1179 funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
1180 filterPos[i/2]-=shift;
1183 fragmentPos+= fragmentLengthA;
1186 funnyCode[fragmentPos]= RET;
1190 filterPos[i/2]= xpos>>16; // needed to jump to the next part
1195 void SwScale_Init(){
1198 static void globalInit(){
1199 // generating tables:
1201 for(i=0; i<768; i++){
1202 int c= MIN(MAX(i-256, 0), 255);
1204 yuvtab_2568[c]= clip_yuvtab_2568[i]=(0x2568*(c-16))+(256<<13);
1205 yuvtab_3343[c]= clip_yuvtab_3343[i]=0x3343*(c-128);
1206 yuvtab_0c92[c]= clip_yuvtab_0c92[i]=-0x0c92*(c-128);
1207 yuvtab_1a1e[c]= clip_yuvtab_1a1e[i]=-0x1a1e*(c-128);
1208 yuvtab_40cf[c]= clip_yuvtab_40cf[i]=0x40cf*(c-128);
1211 for(i=0; i<768; i++)
1213 int v= clip_table[i];
1214 clip_table16b[i]= v>>3;
1215 clip_table16g[i]= (v<<3)&0x07E0;
1216 clip_table16r[i]= (v<<8)&0xF800;
1217 clip_table15b[i]= v>>3;
1218 clip_table15g[i]= (v<<2)&0x03E0;
1219 clip_table15r[i]= (v<<7)&0x7C00;
1224 #ifdef RUNTIME_CPUDETECT
1225 #ifdef CAN_COMPILE_X86_ASM
1226 // ordered per speed fasterst first
1227 if(gCpuCaps.hasMMX2)
1228 swScale= swScale_MMX2;
1229 else if(gCpuCaps.has3DNow)
1230 swScale= swScale_3DNow;
1231 else if(gCpuCaps.hasMMX)
1232 swScale= swScale_MMX;
1238 cpuCaps.hasMMX2 = cpuCaps.hasMMX = cpuCaps.has3DNow = 0;
1240 #else //RUNTIME_CPUDETECT
1242 swScale= swScale_MMX2;
1243 cpuCaps.has3DNow = 0;
1244 #elif defined (HAVE_3DNOW)
1245 swScale= swScale_3DNow;
1246 cpuCaps.hasMMX2 = 0;
1247 #elif defined (HAVE_MMX)
1248 swScale= swScale_MMX;
1249 cpuCaps.hasMMX2 = cpuCaps.has3DNow = 0;
1252 cpuCaps.hasMMX2 = cpuCaps.hasMMX = cpuCaps.has3DNow = 0;
1254 #endif //!RUNTIME_CPUDETECT
1257 /* Warper functions for yuv2bgr */
1258 static void planarYuvToBgr(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1259 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1260 uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1262 if(c->srcFormat==IMGFMT_YV12)
1263 yuv2rgb( dst,src[0],src[1],src[2],c->srcW,srcSliceH,dstStride[0],srcStride[0],srcStride[1] );
1264 else /* I420 & IYUV */
1265 yuv2rgb( dst,src[0],src[2],src[1],c->srcW,srcSliceH,dstStride[0],srcStride[0],srcStride[1] );
1268 static void bgr24to32Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1269 int srcSliceH, uint8_t* dst[], int dstStride[]){
1271 if(dstStride[0]*3==srcStride[0]*4)
1272 rgb24to32(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1276 uint8_t *srcPtr= src[0];
1277 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1279 for(i=0; i<srcSliceH; i++)
1281 rgb24to32(srcPtr, dstPtr, c->srcW*3);
1282 srcPtr+= srcStride[0];
1283 dstPtr+= dstStride[0];
1288 static void bgr32to24Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1289 int srcSliceH, uint8_t* dst[], int dstStride[]){
1291 if(dstStride[0]*4==srcStride[0]*3)
1292 rgb32to24(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1296 uint8_t *srcPtr= src[0];
1297 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1299 for(i=0; i<srcSliceH; i++)
1301 rgb32to24(srcPtr, dstPtr, c->srcW<<2);
1302 srcPtr+= srcStride[0];
1303 dstPtr+= dstStride[0];
1308 static void bgr15to16Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1309 int srcSliceH, uint8_t* dst[], int dstStride[]){
1311 if(dstStride[0]==srcStride[0])
1312 rgb15to16(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1316 uint8_t *srcPtr= src[0];
1317 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1319 for(i=0; i<srcSliceH; i++)
1321 rgb15to16(srcPtr, dstPtr, c->srcW<<1);
1322 srcPtr+= srcStride[0];
1323 dstPtr+= dstStride[0];
1328 static void bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
1329 int srcSliceH, uint8_t* dst[], int dstStride[]){
1333 dst[0]+ srcSliceY *dstStride[0],
1334 dst[1]+(srcSliceY>>1)*dstStride[1],
1335 dst[2]+(srcSliceY>>1)*dstStride[2],
1337 dstStride[0], dstStride[1], srcStride[0]);
1341 /* unscaled copy like stuff (assumes nearly identical formats) */
1342 static void simpleCopy(SwsContext *c, uint8_t* srcParam[], int srcStrideParam[], int srcSliceY,
1343 int srcSliceH, uint8_t* dstParam[], int dstStride[]){
1349 if(c->srcFormat == IMGFMT_I420){
1350 src[0]= srcParam[0];
1351 src[1]= srcParam[2];
1352 src[2]= srcParam[1];
1353 srcStride[0]= srcStrideParam[0];
1354 srcStride[1]= srcStrideParam[2];
1355 srcStride[2]= srcStrideParam[1];
1357 else if(c->srcFormat==IMGFMT_YV12){
1358 src[0]= srcParam[0];
1359 src[1]= srcParam[1];
1360 src[2]= srcParam[2];
1361 srcStride[0]= srcStrideParam[0];
1362 srcStride[1]= srcStrideParam[1];
1363 srcStride[2]= srcStrideParam[2];
1365 else if(isPacked(c->srcFormat) || isGray(c->srcFormat)){
1366 src[0]= srcParam[0];
1369 srcStride[0]= srcStrideParam[0];
1374 if(c->dstFormat == IMGFMT_I420){
1375 dst[0]= dstParam[0];
1376 dst[1]= dstParam[2];
1377 dst[2]= dstParam[1];
1380 dst[0]= dstParam[0];
1381 dst[1]= dstParam[1];
1382 dst[2]= dstParam[2];
1385 if(isPacked(c->srcFormat))
1387 if(dstStride[0]==srcStride[0])
1388 memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1392 uint8_t *srcPtr= src[0];
1393 uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1396 /* universal length finder */
1397 while(length+c->srcW <= ABS(dstStride[0])
1398 && length+c->srcW <= ABS(srcStride[0])) length+= c->srcW;
1401 for(i=0; i<srcSliceH; i++)
1403 memcpy(dstPtr, srcPtr, length);
1404 srcPtr+= srcStride[0];
1405 dstPtr+= dstStride[0];
1412 for(plane=0; plane<3; plane++)
1414 int length= plane==0 ? c->srcW : ((c->srcW+1)>>1);
1415 int y= plane==0 ? srcSliceY: ((srcSliceY+1)>>1);
1416 int height= plane==0 ? srcSliceH: ((srcSliceH+1)>>1);
1418 if(dstStride[plane]==srcStride[plane])
1419 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
1423 uint8_t *srcPtr= src[plane];
1424 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1425 for(i=0; i<height; i++)
1427 memcpy(dstPtr, srcPtr, length);
1428 srcPtr+= srcStride[plane];
1429 dstPtr+= dstStride[plane];
1436 SwsContext *getSwsContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,
1437 SwsFilter *srcFilter, SwsFilter *dstFilter){
1442 SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
1446 asm volatile("emms\n\t"::: "memory");
1449 if(swScale==NULL) globalInit();
1451 /* avoid dupplicate Formats, so we dont need to check to much */
1452 if(srcFormat==IMGFMT_IYUV) srcFormat=IMGFMT_I420;
1453 if(srcFormat==IMGFMT_Y8) srcFormat=IMGFMT_Y800;
1454 if(dstFormat==IMGFMT_Y8) dstFormat=IMGFMT_Y800;
1456 if(!isSupportedIn(srcFormat))
1458 mp_msg(MSGT_SWS,MSGL_ERR,"swScaler: %s is not supported as input format\n", vo_format_name(srcFormat));
1461 if(!isSupportedOut(dstFormat))
1463 mp_msg(MSGT_SWS,MSGL_ERR,"swScaler: %s is not supported as output format\n", vo_format_name(dstFormat));
1468 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
1470 mp_msg(MSGT_SWS,MSGL_ERR,"swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",
1471 srcW, srcH, dstW, dstH);
1475 if(!dstFilter) dstFilter= &dummyFilter;
1476 if(!srcFilter) srcFilter= &dummyFilter;
1478 c= memalign(64, sizeof(SwsContext));
1479 memset(c, 0, sizeof(SwsContext));
1485 c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
1486 c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
1488 c->dstFormat= dstFormat;
1489 c->srcFormat= srcFormat;
1492 if(dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesFilter=1;
1493 if(dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesFilter=1;
1494 if(dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesFilter=1;
1495 if(dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesFilter=1;
1496 if(srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesFilter=1;
1497 if(srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesFilter=1;
1498 if(srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesFilter=1;
1499 if(srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesFilter=1;
1501 /* unscaled special Cases */
1502 if(srcW==dstW && srcH==dstH && !usesFilter)
1505 if(isPlanarYUV(srcFormat) && isBGR(dstFormat))
1507 // FIXME multiple yuv2rgb converters wont work that way cuz that thing is full of globals&statics
1508 #ifdef WORDS_BIGENDIAN
1509 if(dstFormat==IMGFMT_BGR32)
1510 yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_BGR);
1512 yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_RGB);
1514 yuv2rgb_init( dstFormat&0xFF /* =bpp */, MODE_RGB);
1516 c->swScale= planarYuvToBgr;
1518 if(flags&SWS_PRINT_INFO)
1519 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using unscaled %s -> %s special converter\n",
1520 vo_format_name(srcFormat), vo_format_name(dstFormat));
1525 if(srcFormat == dstFormat || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)))
1527 c->swScale= simpleCopy;
1529 if(flags&SWS_PRINT_INFO)
1530 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using unscaled %s -> %s special converter\n",
1531 vo_format_name(srcFormat), vo_format_name(dstFormat));
1535 /* bgr32to24 & rgb32to24*/
1536 if((srcFormat==IMGFMT_BGR32 && dstFormat==IMGFMT_BGR24)
1537 ||(srcFormat==IMGFMT_RGB32 && dstFormat==IMGFMT_RGB24))
1539 c->swScale= bgr32to24Wrapper;
1541 if(flags&SWS_PRINT_INFO)
1542 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using unscaled %s -> %s special converter\n",
1543 vo_format_name(srcFormat), vo_format_name(dstFormat));
1547 /* bgr24to32 & rgb24to32*/
1548 if((srcFormat==IMGFMT_BGR24 && dstFormat==IMGFMT_BGR32)
1549 ||(srcFormat==IMGFMT_RGB24 && dstFormat==IMGFMT_RGB32))
1551 c->swScale= bgr24to32Wrapper;
1553 if(flags&SWS_PRINT_INFO)
1554 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using unscaled %s -> %s special converter\n",
1555 vo_format_name(srcFormat), vo_format_name(dstFormat));
1560 if(srcFormat==IMGFMT_BGR15 && dstFormat==IMGFMT_BGR16)
1562 c->swScale= bgr15to16Wrapper;
1564 if(flags&SWS_PRINT_INFO)
1565 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using unscaled %s -> %s special converter\n",
1566 vo_format_name(srcFormat), vo_format_name(dstFormat));
1571 if(srcFormat==IMGFMT_BGR24 && dstFormat==IMGFMT_YV12)
1573 c->swScale= bgr24toyv12Wrapper;
1575 if(flags&SWS_PRINT_INFO)
1576 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using unscaled %s -> %s special converter\n",
1577 vo_format_name(srcFormat), vo_format_name(dstFormat));
1584 c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
1585 if(!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
1587 if(flags&SWS_PRINT_INFO)
1588 mp_msg(MSGT_SWS,MSGL_WARN,"SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");
1595 /* dont use full vertical UV input/internaly if the source doesnt even have it */
1596 if(isHalfChrV(srcFormat)) c->flags= flags= flags&(~SWS_FULL_CHR_V);
1597 /* dont use full horizontal UV input if the source doesnt even have it */
1598 if(isHalfChrH(srcFormat)) c->flags= flags= flags&(~SWS_FULL_CHR_H_INP);
1599 /* dont use full horizontal UV internally if the destination doesnt even have it */
1600 if(isHalfChrH(dstFormat)) c->flags= flags= flags&(~SWS_FULL_CHR_H_INT);
1602 if(flags&SWS_FULL_CHR_H_INP) c->chrSrcW= srcW;
1603 else c->chrSrcW= (srcW+1)>>1;
1605 if(flags&SWS_FULL_CHR_H_INT) c->chrDstW= dstW;
1606 else c->chrDstW= (dstW+1)>>1;
1608 if(flags&SWS_FULL_CHR_V) c->chrSrcH= srcH;
1609 else c->chrSrcH= (srcH+1)>>1;
1611 if(isHalfChrV(dstFormat)) c->chrDstH= (dstH+1)>>1;
1612 else c->chrDstH= dstH;
1614 c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
1615 c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
1618 // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
1619 // but only for the FAST_BILINEAR mode otherwise do correct scaling
1620 // n-2 is the last chrominance sample available
1621 // this is not perfect, but noone shuld notice the difference, the more correct variant
1622 // would be like the vertical one, but that would require some special code for the
1623 // first and last pixel
1624 if(flags&SWS_FAST_BILINEAR)
1626 if(c->canMMX2BeUsed)
1631 //we dont use the x86asm scaler if mmx is available
1632 else if(cpuCaps.hasMMX)
1634 c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
1635 c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
1639 /* precalculate horizontal scaler filter coefficients */
1641 const int filterAlign= cpuCaps.hasMMX ? 4 : 1;
1643 initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
1644 srcW , dstW, filterAlign, 1<<14, flags,
1645 srcFilter->lumH, dstFilter->lumH);
1646 initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
1647 (srcW+1)>>1, c->chrDstW, filterAlign, 1<<14, flags,
1648 srcFilter->chrH, dstFilter->chrH);
1651 // cant downscale !!!
1652 if(c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
1654 c->lumMmx2Filter = (int16_t*)memalign(8, (dstW /8+8)*sizeof(int16_t));
1655 c->chrMmx2Filter = (int16_t*)memalign(8, (c->chrDstW /4+8)*sizeof(int16_t));
1656 c->lumMmx2FilterPos= (int32_t*)memalign(8, (dstW /2/8+8)*sizeof(int32_t));
1657 c->chrMmx2FilterPos= (int32_t*)memalign(8, (c->chrDstW/2/4+8)*sizeof(int32_t));
1659 initMMX2HScaler( dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
1660 initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
1663 } // Init Horizontal stuff
1667 /* precalculate vertical scaler filter coefficients */
1668 initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
1669 srcH , dstH, 1, (1<<12)-4, flags,
1670 srcFilter->lumV, dstFilter->lumV);
1671 initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
1672 (srcH+1)>>1, c->chrDstH, 1, (1<<12)-4, flags,
1673 srcFilter->chrV, dstFilter->chrV);
1675 // Calculate Buffer Sizes so that they wont run out while handling these damn slices
1676 c->vLumBufSize= c->vLumFilterSize;
1677 c->vChrBufSize= c->vChrFilterSize;
1678 for(i=0; i<dstH; i++)
1680 int chrI= i*c->chrDstH / dstH;
1681 int nextSlice= MAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
1682 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<1));
1683 nextSlice&= ~1; // Slices start at even boundaries
1684 if(c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
1685 c->vLumBufSize= nextSlice - c->vLumFilterPos[i ];
1686 if(c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>1))
1687 c->vChrBufSize= (nextSlice>>1) - c->vChrFilterPos[chrI];
1690 // allocate pixbufs (we use dynamic allocation because otherwise we would need to
1691 c->lumPixBuf= (int16_t**)memalign(4, c->vLumBufSize*2*sizeof(int16_t*));
1692 c->chrPixBuf= (int16_t**)memalign(4, c->vChrBufSize*2*sizeof(int16_t*));
1693 //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)
1694 for(i=0; i<c->vLumBufSize; i++)
1695 c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= (uint16_t*)memalign(8, 4000);
1696 for(i=0; i<c->vChrBufSize; i++)
1697 c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= (uint16_t*)memalign(8, 8000);
1699 //try to avoid drawing green stuff between the right end and the stride end
1700 for(i=0; i<c->vLumBufSize; i++) memset(c->lumPixBuf[i], 0, 4000);
1701 for(i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, 8000);
1703 ASSERT(c->chrDstH <= dstH)
1705 // pack filter data for mmx code
1708 c->lumMmxFilter= (int16_t*)memalign(8, c->vLumFilterSize* dstH*4*sizeof(int16_t));
1709 c->chrMmxFilter= (int16_t*)memalign(8, c->vChrFilterSize*c->chrDstH*4*sizeof(int16_t));
1710 for(i=0; i<c->vLumFilterSize*dstH; i++)
1711 c->lumMmxFilter[4*i]=c->lumMmxFilter[4*i+1]=c->lumMmxFilter[4*i+2]=c->lumMmxFilter[4*i+3]=
1713 for(i=0; i<c->vChrFilterSize*c->chrDstH; i++)
1714 c->chrMmxFilter[4*i]=c->chrMmxFilter[4*i+1]=c->chrMmxFilter[4*i+2]=c->chrMmxFilter[4*i+3]=
1718 if(flags&SWS_PRINT_INFO)
1721 char *dither= " dithered";
1725 if(flags&SWS_FAST_BILINEAR)
1726 mp_msg(MSGT_SWS,MSGL_INFO,"\nSwScaler: FAST_BILINEAR scaler, ");
1727 else if(flags&SWS_BILINEAR)
1728 mp_msg(MSGT_SWS,MSGL_INFO,"\nSwScaler: BILINEAR scaler, ");
1729 else if(flags&SWS_BICUBIC)
1730 mp_msg(MSGT_SWS,MSGL_INFO,"\nSwScaler: BICUBIC scaler, ");
1731 else if(flags&SWS_X)
1732 mp_msg(MSGT_SWS,MSGL_INFO,"\nSwScaler: Experimental scaler, ");
1733 else if(flags&SWS_POINT)
1734 mp_msg(MSGT_SWS,MSGL_INFO,"\nSwScaler: Nearest Neighbor / POINT scaler, ");
1735 else if(flags&SWS_AREA)
1736 mp_msg(MSGT_SWS,MSGL_INFO,"\nSwScaler: Area Averageing scaler, ");
1738 mp_msg(MSGT_SWS,MSGL_INFO,"\nSwScaler: ehh flags invalid?! ");
1740 if(dstFormat==IMGFMT_BGR15 || dstFormat==IMGFMT_BGR16)
1741 mp_msg(MSGT_SWS,MSGL_INFO,"from %s to%s %s ",
1742 vo_format_name(srcFormat), dither, vo_format_name(dstFormat));
1744 mp_msg(MSGT_SWS,MSGL_INFO,"from %s to %s ",
1745 vo_format_name(srcFormat), vo_format_name(dstFormat));
1748 mp_msg(MSGT_SWS,MSGL_INFO,"using MMX2\n");
1749 else if(cpuCaps.has3DNow)
1750 mp_msg(MSGT_SWS,MSGL_INFO,"using 3DNOW\n");
1751 else if(cpuCaps.hasMMX)
1752 mp_msg(MSGT_SWS,MSGL_INFO,"using MMX\n");
1754 mp_msg(MSGT_SWS,MSGL_INFO,"using C\n");
1757 if((flags & SWS_PRINT_INFO) && verbose)
1761 if(c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
1762 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");
1765 if(c->hLumFilterSize==4)
1766 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");
1767 else if(c->hLumFilterSize==8)
1768 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");
1770 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");
1772 if(c->hChrFilterSize==4)
1773 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");
1774 else if(c->hChrFilterSize==8)
1775 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");
1777 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");
1783 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using X86-Asm scaler for horizontal scaling\n");
1785 if(flags & SWS_FAST_BILINEAR)
1786 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");
1788 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using C scaler for horizontal scaling\n");
1791 if(isPlanarYUV(dstFormat))
1793 if(c->vLumFilterSize==1)
1794 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", cpuCaps.hasMMX ? "MMX" : "C");
1796 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)\n", cpuCaps.hasMMX ? "MMX" : "C");
1800 if(c->vLumFilterSize==1 && c->vChrFilterSize==2)
1801 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"
1802 "SwScaler: 2-tap scaler for vertical chrominance scaling (BGR)\n",cpuCaps.hasMMX ? "MMX" : "C");
1803 else if(c->vLumFilterSize==2 && c->vChrFilterSize==2)
1804 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", cpuCaps.hasMMX ? "MMX" : "C");
1806 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", cpuCaps.hasMMX ? "MMX" : "C");
1809 if(dstFormat==IMGFMT_BGR24)
1810 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using %s YV12->BGR24 Converter\n",
1811 cpuCaps.hasMMX2 ? "MMX2" : (cpuCaps.hasMMX ? "MMX" : "C"));
1812 else if(dstFormat==IMGFMT_BGR32)
1813 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using %s YV12->BGR32 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
1814 else if(dstFormat==IMGFMT_BGR16)
1815 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using %s YV12->BGR16 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
1816 else if(dstFormat==IMGFMT_BGR15)
1817 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: using %s YV12->BGR15 Converter\n", cpuCaps.hasMMX ? "MMX" : "C");
1819 mp_msg(MSGT_SWS,MSGL_V,"SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);
1821 if((flags & SWS_PRINT_INFO) && verbose>1)
1823 mp_msg(MSGT_SWS,MSGL_DBG2,"SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1824 c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
1825 mp_msg(MSGT_SWS,MSGL_DBG2,"SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",
1826 c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
1829 c->swScale= swScale;
1834 * returns a normalized gaussian curve used to filter stuff
1835 * quality=3 is high quality, lowwer is lowwer quality
1838 SwsVector *getGaussianVec(double variance, double quality){
1839 const int length= (int)(variance*quality + 0.5) | 1;
1841 double *coeff= memalign(sizeof(double), length*sizeof(double));
1842 double middle= (length-1)*0.5;
1843 SwsVector *vec= malloc(sizeof(SwsVector));
1846 vec->length= length;
1848 for(i=0; i<length; i++)
1850 double dist= i-middle;
1851 coeff[i]= exp( -dist*dist/(2*variance*variance) ) / sqrt(2*variance*PI);
1854 normalizeVec(vec, 1.0);
1859 SwsVector *getConstVec(double c, int length){
1861 double *coeff= memalign(sizeof(double), length*sizeof(double));
1862 SwsVector *vec= malloc(sizeof(SwsVector));
1865 vec->length= length;
1867 for(i=0; i<length; i++)
1874 SwsVector *getIdentityVec(void){
1875 double *coeff= memalign(sizeof(double), sizeof(double));
1876 SwsVector *vec= malloc(sizeof(SwsVector));
1885 void normalizeVec(SwsVector *a, double height){
1890 for(i=0; i<a->length; i++)
1895 for(i=0; i<a->length; i++)
1896 a->coeff[i]*= height;
1899 void scaleVec(SwsVector *a, double scalar){
1902 for(i=0; i<a->length; i++)
1903 a->coeff[i]*= scalar;
1906 static SwsVector *getConvVec(SwsVector *a, SwsVector *b){
1907 int length= a->length + b->length - 1;
1908 double *coeff= memalign(sizeof(double), length*sizeof(double));
1910 SwsVector *vec= malloc(sizeof(SwsVector));
1913 vec->length= length;
1915 for(i=0; i<length; i++) coeff[i]= 0.0;
1917 for(i=0; i<a->length; i++)
1919 for(j=0; j<b->length; j++)
1921 coeff[i+j]+= a->coeff[i]*b->coeff[j];
1928 static SwsVector *sumVec(SwsVector *a, SwsVector *b){
1929 int length= MAX(a->length, b->length);
1930 double *coeff= memalign(sizeof(double), length*sizeof(double));
1932 SwsVector *vec= malloc(sizeof(SwsVector));
1935 vec->length= length;
1937 for(i=0; i<length; i++) coeff[i]= 0.0;
1939 for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
1940 for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
1945 static SwsVector *diffVec(SwsVector *a, SwsVector *b){
1946 int length= MAX(a->length, b->length);
1947 double *coeff= memalign(sizeof(double), length*sizeof(double));
1949 SwsVector *vec= malloc(sizeof(SwsVector));
1952 vec->length= length;
1954 for(i=0; i<length; i++) coeff[i]= 0.0;
1956 for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
1957 for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
1962 /* shift left / or right if "shift" is negative */
1963 static SwsVector *getShiftedVec(SwsVector *a, int shift){
1964 int length= a->length + ABS(shift)*2;
1965 double *coeff= memalign(sizeof(double), length*sizeof(double));
1967 SwsVector *vec= malloc(sizeof(SwsVector));
1970 vec->length= length;
1972 for(i=0; i<length; i++) coeff[i]= 0.0;
1974 for(i=0; i<a->length; i++)
1976 coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
1982 void shiftVec(SwsVector *a, int shift){
1983 SwsVector *shifted= getShiftedVec(a, shift);
1985 a->coeff= shifted->coeff;
1986 a->length= shifted->length;
1990 void addVec(SwsVector *a, SwsVector *b){
1991 SwsVector *sum= sumVec(a, b);
1993 a->coeff= sum->coeff;
1994 a->length= sum->length;
1998 void subVec(SwsVector *a, SwsVector *b){
1999 SwsVector *diff= diffVec(a, b);
2001 a->coeff= diff->coeff;
2002 a->length= diff->length;
2006 void convVec(SwsVector *a, SwsVector *b){
2007 SwsVector *conv= getConvVec(a, b);
2009 a->coeff= conv->coeff;
2010 a->length= conv->length;
2014 SwsVector *cloneVec(SwsVector *a){
2015 double *coeff= memalign(sizeof(double), a->length*sizeof(double));
2017 SwsVector *vec= malloc(sizeof(SwsVector));
2020 vec->length= a->length;
2022 for(i=0; i<a->length; i++) coeff[i]= a->coeff[i];
2027 void printVec(SwsVector *a){
2033 for(i=0; i<a->length; i++)
2034 if(a->coeff[i]>max) max= a->coeff[i];
2036 for(i=0; i<a->length; i++)
2037 if(a->coeff[i]<min) min= a->coeff[i];
2041 for(i=0; i<a->length; i++)
2043 int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
2044 printf("%1.3f ", a->coeff[i]);
2045 for(;x>0; x--) printf(" ");
2050 void freeVec(SwsVector *a){
2052 if(a->coeff) free(a->coeff);
2058 void freeSwsContext(SwsContext *c){
2065 for(i=0; i<c->vLumBufSize; i++)
2067 if(c->lumPixBuf[i]) free(c->lumPixBuf[i]);
2068 c->lumPixBuf[i]=NULL;
2076 for(i=0; i<c->vChrBufSize; i++)
2078 if(c->chrPixBuf[i]) free(c->chrPixBuf[i]);
2079 c->chrPixBuf[i]=NULL;
2085 if(c->vLumFilter) free(c->vLumFilter);
2086 c->vLumFilter = NULL;
2087 if(c->vChrFilter) free(c->vChrFilter);
2088 c->vChrFilter = NULL;
2089 if(c->hLumFilter) free(c->hLumFilter);
2090 c->hLumFilter = NULL;
2091 if(c->hChrFilter) free(c->hChrFilter);
2092 c->hChrFilter = NULL;
2094 if(c->vLumFilterPos) free(c->vLumFilterPos);
2095 c->vLumFilterPos = NULL;
2096 if(c->vChrFilterPos) free(c->vChrFilterPos);
2097 c->vChrFilterPos = NULL;
2098 if(c->hLumFilterPos) free(c->hLumFilterPos);
2099 c->hLumFilterPos = NULL;
2100 if(c->hChrFilterPos) free(c->hChrFilterPos);
2101 c->hChrFilterPos = NULL;
2103 if(c->lumMmxFilter) free(c->lumMmxFilter);
2104 c->lumMmxFilter = NULL;
2105 if(c->chrMmxFilter) free(c->chrMmxFilter);
2106 c->chrMmxFilter = NULL;
2108 if(c->lumMmx2Filter) free(c->lumMmx2Filter);
2109 c->lumMmx2Filter=NULL;
2110 if(c->chrMmx2Filter) free(c->chrMmx2Filter);
2111 c->chrMmx2Filter=NULL;
2112 if(c->lumMmx2FilterPos) free(c->lumMmx2FilterPos);
2113 c->lumMmx2FilterPos=NULL;
2114 if(c->chrMmx2FilterPos) free(c->chrMmx2FilterPos);
2115 c->chrMmx2FilterPos=NULL;