swscale.c
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上传日期:2009-03-27
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文件大小:71k
- /*
- Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- /*
- supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR24, BGR16, BGR15, RGB32, RGB24, Y8/Y800, YVU9/IF09
- supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
- {BGR,RGB}{1,4,8,15,16} support dithering
-
- unscaled special converters (YV12=I420=IYUV, Y800=Y8)
- YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}
- x -> x
- YUV9 -> YV12
- YUV9/YV12 -> Y800
- Y800 -> YUV9/YV12
- BGR24 -> BGR32 & RGB24 -> RGB32
- BGR32 -> BGR24 & RGB32 -> RGB24
- BGR15 -> BGR16
- */
- /*
- tested special converters (most are tested actually but i didnt write it down ...)
- YV12 -> BGR16
- YV12 -> YV12
- BGR15 -> BGR16
- BGR16 -> BGR16
- YVU9 -> YV12
- untested special converters
- YV12/I420 -> BGR15/BGR24/BGR32 (its the yuv2rgb stuff, so it should be ok)
- YV12/I420 -> YV12/I420
- YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
- BGR24 -> BGR32 & RGB24 -> RGB32
- BGR32 -> BGR24 & RGB32 -> RGB24
- BGR24 -> YV12
- */
- #include <inttypes.h>
- #include <string.h>
- #include <math.h>
- #include <stdio.h>
- #include "config.h"
- #include <assert.h>
- #ifdef HAVE_MALLOC_H
- #include <malloc.h>
- #else
- #include <stdlib.h>
- #endif
- #include "swscale.h"
- #include "swscale_internal.h"
- #include "common.h"
- #include "rgb2rgb.h"
- #define RUNTIME_CPUDETECT 1
- #undef MOVNTQ
- #undef PAVGB
- //#undef HAVE_MMX2
- //#define HAVE_3DNOW
- //#undef HAVE_MMX
- //#undef ARCH_X86
- //#define WORDS_BIGENDIAN
- #define DITHER1XBPP
- #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
- #define RET 0xC3 //near return opcode for X86
- #ifdef MP_DEBUG
- #define ASSERT(x) assert(x);
- #else
- #define ASSERT(x) ;
- #endif
- #ifdef M_PI
- #define PI M_PI
- #else
- #define PI 3.14159265358979323846
- #endif
- //FIXME replace this with something faster
- #define isPlanarYUV(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_YVU9
- || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P)
- #define isYUV(x) ((x)==IMGFMT_UYVY || (x)==IMGFMT_YUY2 || isPlanarYUV(x))
- #define isGray(x) ((x)==IMGFMT_Y800)
- #define isRGB(x) (((x)&IMGFMT_RGB_MASK)==IMGFMT_RGB)
- #define isBGR(x) (((x)&IMGFMT_BGR_MASK)==IMGFMT_BGR)
- #define isSupportedIn(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_YUY2 || (x)==IMGFMT_UYVY
- || (x)==IMGFMT_BGR32|| (x)==IMGFMT_BGR24|| (x)==IMGFMT_BGR16|| (x)==IMGFMT_BGR15
- || (x)==IMGFMT_RGB32|| (x)==IMGFMT_RGB24
- || (x)==IMGFMT_Y800 || (x)==IMGFMT_YVU9
- || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P)
- #define isSupportedOut(x) ((x)==IMGFMT_YV12 || (x)==IMGFMT_YUY2 || (x)==IMGFMT_UYVY
- || (x)==IMGFMT_444P || (x)==IMGFMT_422P || (x)==IMGFMT_411P
- || isRGB(x) || isBGR(x)
- || (x)==IMGFMT_Y800 || (x)==IMGFMT_YVU9)
- #define isPacked(x) ((x)==IMGFMT_YUY2 || (x)==IMGFMT_UYVY ||isRGB(x) || isBGR(x))
- #define RGB2YUV_SHIFT 16
- #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
- #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
- #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
- #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
- #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
- #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
- #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
- #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
- #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
- extern const int32_t Inverse_Table_6_9[8][4];
- /*
- NOTES
- Special versions: fast Y 1:1 scaling (no interpolation in y direction)
- TODO
- more intelligent missalignment avoidance for the horizontal scaler
- write special vertical cubic upscale version
- Optimize C code (yv12 / minmax)
- add support for packed pixel yuv input & output
- add support for Y8 output
- optimize bgr24 & bgr32
- add BGR4 output support
- write special BGR->BGR scaler
- */
- #define ABS(a) ((a) > 0 ? (a) : (-(a)))
- #define MIN(a,b) ((a) > (b) ? (b) : (a))
- #define MAX(a,b) ((a) < (b) ? (b) : (a))
- #ifdef ARCH_X86
- static uint64_t attribute_used __attribute__((aligned(8))) bF8= 0xF8F8F8F8F8F8F8F8LL;
- static uint64_t attribute_used __attribute__((aligned(8))) bFC= 0xFCFCFCFCFCFCFCFCLL;
- static uint64_t __attribute__((aligned(8))) w10= 0x0010001000100010LL;
- static uint64_t attribute_used __attribute__((aligned(8))) w02= 0x0002000200020002LL;
- static uint64_t attribute_used __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
- static uint64_t attribute_used __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
- static uint64_t attribute_used __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
- static uint64_t attribute_used __attribute__((aligned(8))) bm01010101=0x00FF00FF00FF00FFLL;
- static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
- static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
- static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
- static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
- static uint64_t __attribute__((aligned(8))) dither4[2]={
- 0x0103010301030103LL,
- 0x0200020002000200LL,};
- static uint64_t __attribute__((aligned(8))) dither8[2]={
- 0x0602060206020602LL,
- 0x0004000400040004LL,};
- static uint64_t __attribute__((aligned(8))) b16Mask= 0x001F001F001F001FLL;
- static uint64_t attribute_used __attribute__((aligned(8))) g16Mask= 0x07E007E007E007E0LL;
- static uint64_t attribute_used __attribute__((aligned(8))) r16Mask= 0xF800F800F800F800LL;
- static uint64_t __attribute__((aligned(8))) b15Mask= 0x001F001F001F001FLL;
- static uint64_t attribute_used __attribute__((aligned(8))) g15Mask= 0x03E003E003E003E0LL;
- static uint64_t attribute_used __attribute__((aligned(8))) r15Mask= 0x7C007C007C007C00LL;
- static uint64_t attribute_used __attribute__((aligned(8))) M24A= 0x00FF0000FF0000FFLL;
- static uint64_t attribute_used __attribute__((aligned(8))) M24B= 0xFF0000FF0000FF00LL;
- static uint64_t attribute_used __attribute__((aligned(8))) M24C= 0x0000FF0000FF0000LL;
- #ifdef FAST_BGR2YV12
- static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
- static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
- static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
- #else
- static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
- static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
- static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
- #endif
- static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
- static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8)))= 0x8080808080808080ULL;
- static const uint64_t w1111 attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
- #endif
- // clipping helper table for C implementations:
- static unsigned char clip_table[768];
- static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
-
- extern const uint8_t dither_2x2_4[2][8];
- extern const uint8_t dither_2x2_8[2][8];
- extern const uint8_t dither_8x8_32[8][8];
- extern const uint8_t dither_8x8_73[8][8];
- extern const uint8_t dither_8x8_220[8][8];
- #ifdef ARCH_X86
- void in_asm_used_var_warning_killer()
- {
- volatile int i= bF8+bFC+w10+
- bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+
- M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0]+bm01010101;
- if(i) i=0;
- }
- #endif
- static inline void yuv2yuvXinC(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
- int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
- uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)
- {
- //FIXME Optimize (just quickly writen not opti..)
- int i;
- for(i=0; i<dstW; i++)
- {
- int val=1<<18;
- int j;
- for(j=0; j<lumFilterSize; j++)
- val += lumSrc[j][i] * lumFilter[j];
- dest[i]= MIN(MAX(val>>19, 0), 255);
- }
- if(uDest != NULL)
- for(i=0; i<chrDstW; i++)
- {
- int u=1<<18;
- int v=1<<18;
- int j;
- for(j=0; j<chrFilterSize; j++)
- {
- u += chrSrc[j][i] * chrFilter[j];
- v += chrSrc[j][i + 2048] * chrFilter[j];
- }
- uDest[i]= MIN(MAX(u>>19, 0), 255);
- vDest[i]= MIN(MAX(v>>19, 0), 255);
- }
- }
- #define YSCALE_YUV_2_PACKEDX_C(type)
- for(i=0; i<(dstW>>1); i++){
- int j;
- int Y1=1<<18;
- int Y2=1<<18;
- int U=1<<18;
- int V=1<<18;
- type *r, *b, *g;
- const int i2= 2*i;
-
- for(j=0; j<lumFilterSize; j++)
- {
- Y1 += lumSrc[j][i2] * lumFilter[j];
- Y2 += lumSrc[j][i2+1] * lumFilter[j];
- }
- for(j=0; j<chrFilterSize; j++)
- {
- U += chrSrc[j][i] * chrFilter[j];
- V += chrSrc[j][i+2048] * chrFilter[j];
- }
- Y1>>=19;
- Y2>>=19;
- U >>=19;
- V >>=19;
- if((Y1|Y2|U|V)&256)
- {
- if(Y1>255) Y1=255;
- else if(Y1<0)Y1=0;
- if(Y2>255) Y2=255;
- else if(Y2<0)Y2=0;
- if(U>255) U=255;
- else if(U<0) U=0;
- if(V>255) V=255;
- else if(V<0) V=0;
- }
-
- #define YSCALE_YUV_2_RGBX_C(type)
- YSCALE_YUV_2_PACKEDX_C(type)
- r = c->table_rV[V];
- g = c->table_gU[U] + c->table_gV[V];
- b = c->table_bU[U];
- #define YSCALE_YUV_2_PACKED2_C
- for(i=0; i<(dstW>>1); i++){
- const int i2= 2*i;
- int Y1= (buf0[i2 ]*yalpha1+buf1[i2 ]*yalpha)>>19;
- int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;
- int U= (uvbuf0[i ]*uvalpha1+uvbuf1[i ]*uvalpha)>>19;
- int V= (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;
- #define YSCALE_YUV_2_RGB2_C(type)
- YSCALE_YUV_2_PACKED2_C
- type *r, *b, *g;
- r = c->table_rV[V];
- g = c->table_gU[U] + c->table_gV[V];
- b = c->table_bU[U];
- #define YSCALE_YUV_2_PACKED1_C
- for(i=0; i<(dstW>>1); i++){
- const int i2= 2*i;
- int Y1= buf0[i2 ]>>7;
- int Y2= buf0[i2+1]>>7;
- int U= (uvbuf1[i ])>>7;
- int V= (uvbuf1[i+2048])>>7;
- #define YSCALE_YUV_2_RGB1_C(type)
- YSCALE_YUV_2_PACKED1_C
- type *r, *b, *g;
- r = c->table_rV[V];
- g = c->table_gU[U] + c->table_gV[V];
- b = c->table_bU[U];
- #define YSCALE_YUV_2_PACKED1B_C
- for(i=0; i<(dstW>>1); i++){
- const int i2= 2*i;
- int Y1= buf0[i2 ]>>7;
- int Y2= buf0[i2+1]>>7;
- int U= (uvbuf0[i ] + uvbuf1[i ])>>8;
- int V= (uvbuf0[i+2048] + uvbuf1[i+2048])>>8;
- #define YSCALE_YUV_2_RGB1B_C(type)
- YSCALE_YUV_2_PACKED1B_C
- type *r, *b, *g;
- r = c->table_rV[V];
- g = c->table_gU[U] + c->table_gV[V];
- b = c->table_bU[U];
- #define YSCALE_YUV_2_ANYRGB_C(func, func2)
- switch(c->dstFormat)
- {
- case IMGFMT_BGR32:
- case IMGFMT_RGB32:
- func(uint32_t)
- ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
- ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
- }
- break;
- case IMGFMT_RGB24:
- func(uint8_t)
- ((uint8_t*)dest)[0]= r[Y1];
- ((uint8_t*)dest)[1]= g[Y1];
- ((uint8_t*)dest)[2]= b[Y1];
- ((uint8_t*)dest)[3]= r[Y2];
- ((uint8_t*)dest)[4]= g[Y2];
- ((uint8_t*)dest)[5]= b[Y2];
- dest+=6;
- }
- break;
- case IMGFMT_BGR24:
- func(uint8_t)
- ((uint8_t*)dest)[0]= b[Y1];
- ((uint8_t*)dest)[1]= g[Y1];
- ((uint8_t*)dest)[2]= r[Y1];
- ((uint8_t*)dest)[3]= b[Y2];
- ((uint8_t*)dest)[4]= g[Y2];
- ((uint8_t*)dest)[5]= r[Y2];
- dest+=6;
- }
- break;
- case IMGFMT_RGB16:
- case IMGFMT_BGR16:
- {
- const int dr1= dither_2x2_8[y&1 ][0];
- const int dg1= dither_2x2_4[y&1 ][0];
- const int db1= dither_2x2_8[(y&1)^1][0];
- const int dr2= dither_2x2_8[y&1 ][1];
- const int dg2= dither_2x2_4[y&1 ][1];
- const int db2= dither_2x2_8[(y&1)^1][1];
- func(uint16_t)
- ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
- ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
- }
- }
- break;
- case IMGFMT_RGB15:
- case IMGFMT_BGR15:
- {
- const int dr1= dither_2x2_8[y&1 ][0];
- const int dg1= dither_2x2_8[y&1 ][1];
- const int db1= dither_2x2_8[(y&1)^1][0];
- const int dr2= dither_2x2_8[y&1 ][1];
- const int dg2= dither_2x2_8[y&1 ][0];
- const int db2= dither_2x2_8[(y&1)^1][1];
- func(uint16_t)
- ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
- ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
- }
- }
- break;
- case IMGFMT_RGB8:
- case IMGFMT_BGR8:
- {
- const uint8_t * const d64= dither_8x8_73[y&7];
- const uint8_t * const d32= dither_8x8_32[y&7];
- func(uint8_t)
- ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
- ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
- }
- }
- break;
- case IMGFMT_RGB4:
- case IMGFMT_BGR4:
- {
- const uint8_t * const d64= dither_8x8_73 [y&7];
- const uint8_t * const d128=dither_8x8_220[y&7];
- func(uint8_t)
- ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]
- + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);
- }
- }
- break;
- case IMGFMT_RG4B:
- case IMGFMT_BG4B:
- {
- const uint8_t * const d64= dither_8x8_73 [y&7];
- const uint8_t * const d128=dither_8x8_220[y&7];
- func(uint8_t)
- ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
- ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
- }
- }
- break;
- case IMGFMT_RGB1:
- case IMGFMT_BGR1:
- {
- const uint8_t * const d128=dither_8x8_220[y&7];
- uint8_t *g= c->table_gU[128] + c->table_gV[128];
- for(i=0; i<dstW-7; i+=8){
- int acc;
- acc = g[((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19) + d128[0]];
- acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];
- acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];
- acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];
- acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];
- acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];
- acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];
- acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];
- ((uint8_t*)dest)[0]= acc;
- dest++;
- }
- /*
- ((uint8_t*)dest)-= dstW>>4;
- {
- int acc=0;
- int left=0;
- static int top[1024];
- static int last_new[1024][1024];
- static int last_in3[1024][1024];
- static int drift[1024][1024];
- int topLeft=0;
- int shift=0;
- int count=0;
- const uint8_t * const d128=dither_8x8_220[y&7];
- int error_new=0;
- int error_in3=0;
- int f=0;
-
- for(i=dstW>>1; i<dstW; i++){
- int in= ((buf0[i ]*yalpha1+buf1[i ]*yalpha)>>19);
- int in2 = (76309 * (in - 16) + 32768) >> 16;
- int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);
- int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3
- + (last_new[y][i] - in3)*f/256;
- int new= old> 128 ? 255 : 0;
- error_new+= ABS(last_new[y][i] - new);
- error_in3+= ABS(last_in3[y][i] - in3);
- f= error_new - error_in3*4;
- if(f<0) f=0;
- if(f>256) f=256;
- topLeft= top[i];
- left= top[i]= old - new;
- last_new[y][i]= new;
- last_in3[y][i]= in3;
- acc+= acc + (new&1);
- if((i&7)==6){
- ((uint8_t*)dest)[0]= acc;
- ((uint8_t*)dest)++;
- }
- }
- }
- */
- }
- break;
- case IMGFMT_YUY2:
- func2
- ((uint8_t*)dest)[2*i2+0]= Y1;
- ((uint8_t*)dest)[2*i2+1]= U;
- ((uint8_t*)dest)[2*i2+2]= Y2;
- ((uint8_t*)dest)[2*i2+3]= V;
- }
- break;
- case IMGFMT_UYVY:
- func2
- ((uint8_t*)dest)[2*i2+0]= U;
- ((uint8_t*)dest)[2*i2+1]= Y1;
- ((uint8_t*)dest)[2*i2+2]= V;
- ((uint8_t*)dest)[2*i2+3]= Y2;
- }
- break;
- }
- static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
- int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
- uint8_t *dest, int dstW, int y)
- {
- int i;
- switch(c->dstFormat)
- {
- case IMGFMT_RGB32:
- case IMGFMT_BGR32:
- YSCALE_YUV_2_RGBX_C(uint32_t)
- ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
- ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
- }
- break;
- case IMGFMT_RGB24:
- YSCALE_YUV_2_RGBX_C(uint8_t)
- ((uint8_t*)dest)[0]= r[Y1];
- ((uint8_t*)dest)[1]= g[Y1];
- ((uint8_t*)dest)[2]= b[Y1];
- ((uint8_t*)dest)[3]= r[Y2];
- ((uint8_t*)dest)[4]= g[Y2];
- ((uint8_t*)dest)[5]= b[Y2];
- dest+=6;
- }
- break;
- case IMGFMT_BGR24:
- YSCALE_YUV_2_RGBX_C(uint8_t)
- ((uint8_t*)dest)[0]= b[Y1];
- ((uint8_t*)dest)[1]= g[Y1];
- ((uint8_t*)dest)[2]= r[Y1];
- ((uint8_t*)dest)[3]= b[Y2];
- ((uint8_t*)dest)[4]= g[Y2];
- ((uint8_t*)dest)[5]= r[Y2];
- dest+=6;
- }
- break;
- case IMGFMT_RGB16:
- case IMGFMT_BGR16:
- {
- const int dr1= dither_2x2_8[y&1 ][0];
- const int dg1= dither_2x2_4[y&1 ][0];
- const int db1= dither_2x2_8[(y&1)^1][0];
- const int dr2= dither_2x2_8[y&1 ][1];
- const int dg2= dither_2x2_4[y&1 ][1];
- const int db2= dither_2x2_8[(y&1)^1][1];
- YSCALE_YUV_2_RGBX_C(uint16_t)
- ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
- ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
- }
- }
- break;
- case IMGFMT_RGB15:
- case IMGFMT_BGR15:
- {
- const int dr1= dither_2x2_8[y&1 ][0];
- const int dg1= dither_2x2_8[y&1 ][1];
- const int db1= dither_2x2_8[(y&1)^1][0];
- const int dr2= dither_2x2_8[y&1 ][1];
- const int dg2= dither_2x2_8[y&1 ][0];
- const int db2= dither_2x2_8[(y&1)^1][1];
- YSCALE_YUV_2_RGBX_C(uint16_t)
- ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
- ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
- }
- }
- break;
- case IMGFMT_RGB8:
- case IMGFMT_BGR8:
- {
- const uint8_t * const d64= dither_8x8_73[y&7];
- const uint8_t * const d32= dither_8x8_32[y&7];
- YSCALE_YUV_2_RGBX_C(uint8_t)
- ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
- ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
- }
- }
- break;
- case IMGFMT_RGB4:
- case IMGFMT_BGR4:
- {
- const uint8_t * const d64= dither_8x8_73 [y&7];
- const uint8_t * const d128=dither_8x8_220[y&7];
- YSCALE_YUV_2_RGBX_C(uint8_t)
- ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]
- +((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);
- }
- }
- break;
- case IMGFMT_RG4B:
- case IMGFMT_BG4B:
- {
- const uint8_t * const d64= dither_8x8_73 [y&7];
- const uint8_t * const d128=dither_8x8_220[y&7];
- YSCALE_YUV_2_RGBX_C(uint8_t)
- ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
- ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
- }
- }
- break;
- case IMGFMT_RGB1:
- case IMGFMT_BGR1:
- {
- const uint8_t * const d128=dither_8x8_220[y&7];
- uint8_t *g= c->table_gU[128] + c->table_gV[128];
- int acc=0;
- for(i=0; i<dstW-1; i+=2){
- int j;
- int Y1=1<<18;
- int Y2=1<<18;
- for(j=0; j<lumFilterSize; j++)
- {
- Y1 += lumSrc[j][i] * lumFilter[j];
- Y2 += lumSrc[j][i+1] * lumFilter[j];
- }
- Y1>>=19;
- Y2>>=19;
- if((Y1|Y2)&256)
- {
- if(Y1>255) Y1=255;
- else if(Y1<0)Y1=0;
- if(Y2>255) Y2=255;
- else if(Y2<0)Y2=0;
- }
- acc+= acc + g[Y1+d128[(i+0)&7]];
- acc+= acc + g[Y2+d128[(i+1)&7]];
- if((i&7)==6){
- ((uint8_t*)dest)[0]= acc;
- dest++;
- }
- }
- }
- break;
- case IMGFMT_YUY2:
- YSCALE_YUV_2_PACKEDX_C(void)
- ((uint8_t*)dest)[2*i2+0]= Y1;
- ((uint8_t*)dest)[2*i2+1]= U;
- ((uint8_t*)dest)[2*i2+2]= Y2;
- ((uint8_t*)dest)[2*i2+3]= V;
- }
- break;
- case IMGFMT_UYVY:
- YSCALE_YUV_2_PACKEDX_C(void)
- ((uint8_t*)dest)[2*i2+0]= U;
- ((uint8_t*)dest)[2*i2+1]= Y1;
- ((uint8_t*)dest)[2*i2+2]= V;
- ((uint8_t*)dest)[2*i2+3]= Y2;
- }
- break;
- }
- }
- //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
- //Plain C versions
- #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT)
- #define COMPILE_C
- #endif
- #ifdef ARCH_POWERPC
- #ifdef HAVE_ALTIVEC
- #define COMPILE_ALTIVEC
- #endif //HAVE_ALTIVEC
- #endif //ARCH_POWERPC
- #ifdef ARCH_X86
- #if (defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
- #define COMPILE_MMX
- #endif
- #if defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)
- #define COMPILE_MMX2
- #endif
- #if (defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
- #define COMPILE_3DNOW
- #endif
- #endif //ARCH_X86
- #undef HAVE_MMX
- #undef HAVE_MMX2
- #undef HAVE_3DNOW
- #ifdef COMPILE_C
- #undef HAVE_MMX
- #undef HAVE_MMX2
- #undef HAVE_3DNOW
- #undef HAVE_ALTIVEC
- #define RENAME(a) a ## _C
- #include "swscale_template.c"
- #endif
- #ifdef ARCH_POWERPC
- #ifdef COMPILE_ALTIVEC
- #undef RENAME
- #define HAVE_ALTIVEC
- #define RENAME(a) a ## _altivec
- #include "swscale_template.c"
- #endif
- #endif //ARCH_POWERPC
- #ifdef ARCH_X86
- //X86 versions
- /*
- #undef RENAME
- #undef HAVE_MMX
- #undef HAVE_MMX2
- #undef HAVE_3DNOW
- #define ARCH_X86
- #define RENAME(a) a ## _X86
- #include "swscale_template.c"
- */
- //MMX versions
- #ifdef COMPILE_MMX
- #undef RENAME
- #define HAVE_MMX
- #undef HAVE_MMX2
- #undef HAVE_3DNOW
- #define RENAME(a) a ## _MMX
- #include "swscale_template.c"
- #endif
- //MMX2 versions
- #ifdef COMPILE_MMX2
- #undef RENAME
- #define HAVE_MMX
- #define HAVE_MMX2
- #undef HAVE_3DNOW
- #define RENAME(a) a ## _MMX2
- #include "swscale_template.c"
- #endif
- //3DNOW versions
- #ifdef COMPILE_3DNOW
- #undef RENAME
- #define HAVE_MMX
- #undef HAVE_MMX2
- #define HAVE_3DNOW
- #define RENAME(a) a ## _3DNow
- #include "swscale_template.c"
- #endif
- #endif //ARCH_X86
- // minor note: the HAVE_xyz is messed up after that line so don't use it
- static double getSplineCoeff(double a, double b, double c, double d, double dist)
- {
- // printf("%f %f %f %f %fn", a,b,c,d,dist);
- if(dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;
- else return getSplineCoeff( 0.0,
- b+ 2.0*c + 3.0*d,
- c + 3.0*d,
- -b- 3.0*c - 6.0*d,
- dist-1.0);
- }
- static inline void initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,
- int srcW, int dstW, int filterAlign, int one, int flags,
- SwsVector *srcFilter, SwsVector *dstFilter)
- {
- int i;
- int filterSize;
- int filter2Size;
- int minFilterSize;
- double *filter=NULL;
- double *filter2=NULL;
- #ifdef ARCH_X86
- if(flags & SWS_CPU_CAPS_MMX)
- asm volatile("emmsnt"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)
- #endif
- // Note the +1 is for the MMXscaler which reads over the end
- *filterPos = (int16_t*)memalign(8, (dstW+1)*sizeof(int16_t));
- if(ABS(xInc - 0x10000) <10) // unscaled
- {
- int i;
- filterSize= 1;
- filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
- for(i=0; i<dstW*filterSize; i++) filter[i]=0;
- for(i=0; i<dstW; i++)
- {
- filter[i*filterSize]=1;
- (*filterPos)[i]=i;
- }
- }
- else if(flags&SWS_POINT) // lame looking point sampling mode
- {
- int i;
- int xDstInSrc;
- filterSize= 1;
- filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
-
- xDstInSrc= xInc/2 - 0x8000;
- for(i=0; i<dstW; i++)
- {
- int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
- (*filterPos)[i]= xx;
- filter[i]= 1.0;
- xDstInSrc+= xInc;
- }
- }
- else if((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale
- {
- int i;
- int xDstInSrc;
- if (flags&SWS_BICUBIC) filterSize= 4;
- else if(flags&SWS_X ) filterSize= 4;
- else filterSize= 2; // SWS_BILINEAR / SWS_AREA
- filter= (double*)memalign(8, dstW*sizeof(double)*filterSize);
- xDstInSrc= xInc/2 - 0x8000;
- for(i=0; i<dstW; i++)
- {
- int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;
- int j;
- (*filterPos)[i]= xx;
- //Bilinear upscale / linear interpolate / Area averaging
- for(j=0; j<filterSize; j++)
- {
- double d= ABS((xx<<16) - xDstInSrc)/(double)(1<<16);
- double coeff= 1.0 - d;
- if(coeff<0) coeff=0;
- filter[i*filterSize + j]= coeff;
- xx++;
- }
- xDstInSrc+= xInc;
- }
- }
- else
- {
- double xDstInSrc;
- double sizeFactor, filterSizeInSrc;
- const double xInc1= (double)xInc / (double)(1<<16);
- int param= (flags&SWS_PARAM_MASK)>>SWS_PARAM_SHIFT;
- if (flags&SWS_BICUBIC) sizeFactor= 4.0;
- else if(flags&SWS_X) sizeFactor= 8.0;
- else if(flags&SWS_AREA) sizeFactor= 1.0; //downscale only, for upscale it is bilinear
- else if(flags&SWS_GAUSS) sizeFactor= 8.0; // infinite ;)
- else if(flags&SWS_LANCZOS) sizeFactor= param ? 2.0*param : 6.0;
- else if(flags&SWS_SINC) sizeFactor= 20.0; // infinite ;)
- else if(flags&SWS_SPLINE) sizeFactor= 20.0; // infinite ;)
- else if(flags&SWS_BILINEAR) sizeFactor= 2.0;
- else {
- sizeFactor= 0.0; //GCC warning killer
- ASSERT(0)
- }
-
- if(xInc1 <= 1.0) filterSizeInSrc= sizeFactor; // upscale
- else filterSizeInSrc= sizeFactor*srcW / (double)dstW;
- filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible
- if(filterSize > srcW-2) filterSize=srcW-2;
- filter= (double*)memalign(16, dstW*sizeof(double)*filterSize);
- xDstInSrc= xInc1 / 2.0 - 0.5;
- for(i=0; i<dstW; i++)
- {
- int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);
- int j;
- (*filterPos)[i]= xx;
- for(j=0; j<filterSize; j++)
- {
- double d= ABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;
- double coeff;
- if(flags & SWS_BICUBIC)
- {
- double A= param ? -param*0.01 : -0.60;
-
- // Equation is from VirtualDub
- if(d<1.0)
- coeff = (1.0 - (A+3.0)*d*d + (A+2.0)*d*d*d);
- else if(d<2.0)
- coeff = (-4.0*A + 8.0*A*d - 5.0*A*d*d + A*d*d*d);
- else
- coeff=0.0;
- }
- /* else if(flags & SWS_X)
- {
- double p= param ? param*0.01 : 0.3;
- coeff = d ? sin(d*PI)/(d*PI) : 1.0;
- coeff*= pow(2.0, - p*d*d);
- }*/
- else if(flags & SWS_X)
- {
- double A= param ? param*0.1 : 1.0;
-
- if(d<1.0)
- coeff = cos(d*PI);
- else
- coeff=-1.0;
- if(coeff<0.0) coeff= -pow(-coeff, A);
- else coeff= pow( coeff, A);
- coeff= coeff*0.5 + 0.5;
- }
- else if(flags & SWS_AREA)
- {
- double srcPixelSize= 1.0/xInc1;
- if(d + srcPixelSize/2 < 0.5) coeff= 1.0;
- else if(d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;
- else coeff=0.0;
- }
- else if(flags & SWS_GAUSS)
- {
- double p= param ? param*0.1 : 3.0;
- coeff = pow(2.0, - p*d*d);
- }
- else if(flags & SWS_SINC)
- {
- coeff = d ? sin(d*PI)/(d*PI) : 1.0;
- }
- else if(flags & SWS_LANCZOS)
- {
- double p= param ? param : 3.0;
- coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;
- if(d>p) coeff=0;
- }
- else if(flags & SWS_BILINEAR)
- {
- coeff= 1.0 - d;
- if(coeff<0) coeff=0;
- }
- else if(flags & SWS_SPLINE)
- {
- double p=-2.196152422706632;
- coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);
- }
- else {
- coeff= 0.0; //GCC warning killer
- ASSERT(0)
- }
- filter[i*filterSize + j]= coeff;
- xx++;
- }
- xDstInSrc+= xInc1;
- }
- }
- /* apply src & dst Filter to filter -> filter2
- free(filter);
- */
- ASSERT(filterSize>0)
- filter2Size= filterSize;
- if(srcFilter) filter2Size+= srcFilter->length - 1;
- if(dstFilter) filter2Size+= dstFilter->length - 1;
- ASSERT(filter2Size>0)
- filter2= (double*)memalign(8, filter2Size*dstW*sizeof(double));
- for(i=0; i<dstW; i++)
- {
- int j;
- SwsVector scaleFilter;
- SwsVector *outVec;
- scaleFilter.coeff= filter + i*filterSize;
- scaleFilter.length= filterSize;
- if(srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);
- else outVec= &scaleFilter;
- ASSERT(outVec->length == filter2Size)
- //FIXME dstFilter
- for(j=0; j<outVec->length; j++)
- {
- filter2[i*filter2Size + j]= outVec->coeff[j];
- }
- (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;
- if(outVec != &scaleFilter) sws_freeVec(outVec);
- }
- free(filter); filter=NULL;
- /* try to reduce the filter-size (step1 find size and shift left) */
- // Assume its near normalized (*0.5 or *2.0 is ok but * 0.001 is not)
- minFilterSize= 0;
- for(i=dstW-1; i>=0; i--)
- {
- int min= filter2Size;
- int j;
- double cutOff=0.0;
- /* get rid off near zero elements on the left by shifting left */
- for(j=0; j<filter2Size; j++)
- {
- int k;
- cutOff += ABS(filter2[i*filter2Size]);
- if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
- /* preserve Monotonicity because the core can't handle the filter otherwise */
- if(i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;
- // Move filter coeffs left
- for(k=1; k<filter2Size; k++)
- filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];
- filter2[i*filter2Size + k - 1]= 0.0;
- (*filterPos)[i]++;
- }
- cutOff=0.0;
- /* count near zeros on the right */
- for(j=filter2Size-1; j>0; j--)
- {
- cutOff += ABS(filter2[i*filter2Size + j]);
- if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;
- min--;
- }
- if(min>minFilterSize) minFilterSize= min;
- }
- if (flags & SWS_CPU_CAPS_ALTIVEC) {
- // we can handle the special case 4,
- // so we don't want to go to the full 8
- if (minFilterSize < 5)
- filterAlign = 4;
- // we really don't want to waste our time
- // doing useless computation, so fall-back on
- // the scalar C code for very small filter.
- // vectorizing is worth it only if you have
- // decent-sized vector.
- if (minFilterSize < 3)
- filterAlign = 1;
- }
- ASSERT(minFilterSize > 0)
- filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
- ASSERT(filterSize > 0)
- filter= (double*)memalign(8, filterSize*dstW*sizeof(double));
- *outFilterSize= filterSize;
- if(flags&SWS_PRINT_INFO)
- MSG_INFO("SwScaler: reducing / aligning filtersize %d -> %dn", filter2Size, filterSize);
- /* try to reduce the filter-size (step2 reduce it) */
- for(i=0; i<dstW; i++)
- {
- int j;
- for(j=0; j<filterSize; j++)
- {
- if(j>=filter2Size) filter[i*filterSize + j]= 0.0;
- else filter[i*filterSize + j]= filter2[i*filter2Size + j];
- }
- }
- free(filter2); filter2=NULL;
-
- //FIXME try to align filterpos if possible
- //fix borders
- for(i=0; i<dstW; i++)
- {
- int j;
- if((*filterPos)[i] < 0)
- {
- // Move filter coeffs left to compensate for filterPos
- for(j=1; j<filterSize; j++)
- {
- int left= MAX(j + (*filterPos)[i], 0);
- filter[i*filterSize + left] += filter[i*filterSize + j];
- filter[i*filterSize + j]=0;
- }
- (*filterPos)[i]= 0;
- }
- if((*filterPos)[i] + filterSize > srcW)
- {
- int shift= (*filterPos)[i] + filterSize - srcW;
- // Move filter coeffs right to compensate for filterPos
- for(j=filterSize-2; j>=0; j--)
- {
- int right= MIN(j + shift, filterSize-1);
- filter[i*filterSize +right] += filter[i*filterSize +j];
- filter[i*filterSize +j]=0;
- }
- (*filterPos)[i]= srcW - filterSize;
- }
- }
- // Note the +1 is for the MMXscaler which reads over the end
- *outFilter= (int16_t*)memalign(8, *outFilterSize*(dstW+1)*sizeof(int16_t));
- memset(*outFilter, 0, *outFilterSize*(dstW+1)*sizeof(int16_t));
- /* Normalize & Store in outFilter */
- for(i=0; i<dstW; i++)
- {
- int j;
- double error=0;
- double sum=0;
- double scale= one;
- for(j=0; j<filterSize; j++)
- {
- sum+= filter[i*filterSize + j];
- }
- scale/= sum;
- for(j=0; j<*outFilterSize; j++)
- {
- double v= filter[i*filterSize + j]*scale + error;
- int intV= floor(v + 0.5);
- (*outFilter)[i*(*outFilterSize) + j]= intV;
- error = v - intV;
- }
- }
-
- (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end
- for(i=0; i<*outFilterSize; i++)
- {
- int j= dstW*(*outFilterSize);
- (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];
- }
- free(filter);
- }
- #ifdef ARCH_X86
- static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)
- {
- uint8_t *fragmentA;
- int imm8OfPShufW1A;
- int imm8OfPShufW2A;
- int fragmentLengthA;
- uint8_t *fragmentB;
- int imm8OfPShufW1B;
- int imm8OfPShufW2B;
- int fragmentLengthB;
- int fragmentPos;
- int xpos, i;
- // create an optimized horizontal scaling routine
- //code fragment
- asm volatile(
- "jmp 9f nt"
- // Begin
- "0: nt"
- "movq (%%edx, %%eax), %%mm3 nt"
- "movd (%%ecx, %%esi), %%mm0 nt"
- "movd 1(%%ecx, %%esi), %%mm1 nt"
- "punpcklbw %%mm7, %%mm1 nt"
- "punpcklbw %%mm7, %%mm0 nt"
- "pshufw $0xFF, %%mm1, %%mm1 nt"
- "1: nt"
- "pshufw $0xFF, %%mm0, %%mm0 nt"
- "2: nt"
- "psubw %%mm1, %%mm0 nt"
- "movl 8(%%ebx, %%eax), %%esi nt"
- "pmullw %%mm3, %%mm0 nt"
- "psllw $7, %%mm1 nt"
- "paddw %%mm1, %%mm0 nt"
- "movq %%mm0, (%%edi, %%eax) nt"
- "addl $8, %%eax nt"
- // End
- "9: nt"
- // "int $3nt"
- "leal 0b, %0 nt"
- "leal 1b, %1 nt"
- "leal 2b, %2 nt"
- "decl %1 nt"
- "decl %2 nt"
- "subl %0, %1 nt"
- "subl %0, %2 nt"
- "leal 9b, %3 nt"
- "subl %0, %3 nt"
- :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),
- "=r" (fragmentLengthA)
- );
- asm volatile(
- "jmp 9f nt"
- // Begin
- "0: nt"
- "movq (%%edx, %%eax), %%mm3 nt"
- "movd (%%ecx, %%esi), %%mm0 nt"
- "punpcklbw %%mm7, %%mm0 nt"
- "pshufw $0xFF, %%mm0, %%mm1 nt"
- "1: nt"
- "pshufw $0xFF, %%mm0, %%mm0 nt"
- "2: nt"
- "psubw %%mm1, %%mm0 nt"
- "movl 8(%%ebx, %%eax), %%esi nt"
- "pmullw %%mm3, %%mm0 nt"
- "psllw $7, %%mm1 nt"
- "paddw %%mm1, %%mm0 nt"
- "movq %%mm0, (%%edi, %%eax) nt"
- "addl $8, %%eax nt"
- // End
- "9: nt"
- // "int $3nt"
- "leal 0b, %0 nt"
- "leal 1b, %1 nt"
- "leal 2b, %2 nt"
- "decl %1 nt"
- "decl %2 nt"
- "subl %0, %1 nt"
- "subl %0, %2 nt"
- "leal 9b, %3 nt"
- "subl %0, %3 nt"
- :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),
- "=r" (fragmentLengthB)
- );
- xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers
- fragmentPos=0;
-
- for(i=0; i<dstW/numSplits; i++)
- {
- int xx=xpos>>16;
- if((i&3) == 0)
- {
- int a=0;
- int b=((xpos+xInc)>>16) - xx;
- int c=((xpos+xInc*2)>>16) - xx;
- int d=((xpos+xInc*3)>>16) - xx;
- filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
- filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
- filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
- filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;
- filterPos[i/2]= xx;
- if(d+1<4)
- {
- int maxShift= 3-(d+1);
- int shift=0;
- memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);
- funnyCode[fragmentPos + imm8OfPShufW1B]=
- (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);
- funnyCode[fragmentPos + imm8OfPShufW2B]=
- a | (b<<2) | (c<<4) | (d<<6);
- if(i+3>=dstW) shift=maxShift; //avoid overread
- else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align
- if(shift && i>=shift)
- {
- funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;
- funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;
- filterPos[i/2]-=shift;
- }
- fragmentPos+= fragmentLengthB;
- }
- else
- {
- int maxShift= 3-d;
- int shift=0;
- memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);
- funnyCode[fragmentPos + imm8OfPShufW1A]=
- funnyCode[fragmentPos + imm8OfPShufW2A]=
- a | (b<<2) | (c<<4) | (d<<6);
- if(i+4>=dstW) shift=maxShift; //avoid overread
- else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align
- if(shift && i>=shift)
- {
- funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;
- funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;
- filterPos[i/2]-=shift;
- }
- fragmentPos+= fragmentLengthA;
- }
- funnyCode[fragmentPos]= RET;
- }
- xpos+=xInc;
- }
- filterPos[i/2]= xpos>>16; // needed to jump to the next part
- }
- #endif // ARCH_X86
- static void globalInit(){
- // generating tables:
- int i;
- for(i=0; i<768; i++){
- int c= MIN(MAX(i-256, 0), 255);
- clip_table[i]=c;
- }
- }
- static SwsFunc getSwsFunc(int flags){
-
- #ifdef RUNTIME_CPUDETECT
- #ifdef ARCH_X86
- // ordered per speed fasterst first
- if(flags & SWS_CPU_CAPS_MMX2)
- return swScale_MMX2;
- else if(flags & SWS_CPU_CAPS_3DNOW)
- return swScale_3DNow;
- else if(flags & SWS_CPU_CAPS_MMX)
- return swScale_MMX;
- else
- return swScale_C;
- #else
- #ifdef ARCH_POWERPC
- if(flags & SWS_CPU_CAPS_ALTIVEC)
- return swScale_altivec;
- else
- return swScale_C;
- #endif
- return swScale_C;
- #endif
- #else //RUNTIME_CPUDETECT
- #ifdef HAVE_MMX2
- return swScale_MMX2;
- #elif defined (HAVE_3DNOW)
- return swScale_3DNow;
- #elif defined (HAVE_MMX)
- return swScale_MMX;
- #elif defined (HAVE_ALTIVEC)
- return swScale_altivec;
- #else
- return swScale_C;
- #endif
- #endif //!RUNTIME_CPUDETECT
- }
- static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[]){
- uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
- /* Copy Y plane */
- if(dstStride[0]==srcStride[0])
- memcpy(dst, src[0], srcSliceH*dstStride[0]);
- else
- {
- int i;
- uint8_t *srcPtr= src[0];
- uint8_t *dstPtr= dst;
- for(i=0; i<srcSliceH; i++)
- {
- memcpy(dstPtr, srcPtr, srcStride[0]);
- srcPtr+= srcStride[0];
- dstPtr+= dstStride[0];
- }
- }
- dst = dstParam[1] + dstStride[1]*srcSliceY;
- interleaveBytes( src[1],src[2],dst,c->srcW,srcSliceH,srcStride[1],srcStride[2],dstStride[0] );
- return srcSliceH;
- }
- static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[]){
- uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
- yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
- return srcSliceH;
- }
- static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStride[]){
- uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
- yv12touyvy( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );
- return srcSliceH;
- }
- /* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */
- static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]){
- const int srcFormat= c->srcFormat;
- const int dstFormat= c->dstFormat;
- const int srcBpp= ((srcFormat&0xFF) + 7)>>3;
- const int dstBpp= ((dstFormat&0xFF) + 7)>>3;
- const int srcId= (srcFormat&0xFF)>>2; // 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8
- const int dstId= (dstFormat&0xFF)>>2;
- void (*conv)(const uint8_t *src, uint8_t *dst, unsigned src_size)=NULL;
- /* BGR -> BGR */
- if( (isBGR(srcFormat) && isBGR(dstFormat))
- || (isRGB(srcFormat) && isRGB(dstFormat))){
- switch(srcId | (dstId<<4)){
- case 0x34: conv= rgb16to15; break;
- case 0x36: conv= rgb24to15; break;
- case 0x38: conv= rgb32to15; break;
- case 0x43: conv= rgb15to16; break;
- case 0x46: conv= rgb24to16; break;
- case 0x48: conv= rgb32to16; break;
- case 0x63: conv= rgb15to24; break;
- case 0x64: conv= rgb16to24; break;
- case 0x68: conv= rgb32to24; break;
- case 0x83: conv= rgb15to32; break;
- case 0x84: conv= rgb16to32; break;
- case 0x86: conv= rgb24to32; break;
- default: MSG_ERR("swScaler: internal error %s -> %s convertern",
- vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
- }
- }else if( (isBGR(srcFormat) && isRGB(dstFormat))
- || (isRGB(srcFormat) && isBGR(dstFormat))){
- switch(srcId | (dstId<<4)){
- case 0x33: conv= rgb15tobgr15; break;
- case 0x34: conv= rgb16tobgr15; break;
- case 0x36: conv= rgb24tobgr15; break;
- case 0x38: conv= rgb32tobgr15; break;
- case 0x43: conv= rgb15tobgr16; break;
- case 0x44: conv= rgb16tobgr16; break;
- case 0x46: conv= rgb24tobgr16; break;
- case 0x48: conv= rgb32tobgr16; break;
- case 0x63: conv= rgb15tobgr24; break;
- case 0x64: conv= rgb16tobgr24; break;
- case 0x66: conv= rgb24tobgr24; break;
- case 0x68: conv= rgb32tobgr24; break;
- case 0x83: conv= rgb15tobgr32; break;
- case 0x84: conv= rgb16tobgr32; break;
- case 0x86: conv= rgb24tobgr32; break;
- case 0x88: conv= rgb32tobgr32; break;
- default: MSG_ERR("swScaler: internal error %s -> %s convertern",
- vo_format_name(srcFormat), vo_format_name(dstFormat)); break;
- }
- }else{
- MSG_ERR("swScaler: internal error %s -> %s convertern",
- vo_format_name(srcFormat), vo_format_name(dstFormat));
- }
- if(dstStride[0]*srcBpp == srcStride[0]*dstBpp)
- conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
- else
- {
- int i;
- uint8_t *srcPtr= src[0];
- uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
- for(i=0; i<srcSliceH; i++)
- {
- conv(srcPtr, dstPtr, c->srcW*srcBpp);
- srcPtr+= srcStride[0];
- dstPtr+= dstStride[0];
- }
- }
- return srcSliceH;
- }
- static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]){
- rgb24toyv12(
- src[0],
- dst[0]+ srcSliceY *dstStride[0],
- dst[1]+(srcSliceY>>1)*dstStride[1],
- dst[2]+(srcSliceY>>1)*dstStride[2],
- c->srcW, srcSliceH,
- dstStride[0], dstStride[1], srcStride[0]);
- return srcSliceH;
- }
- static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]){
- int i;
- /* copy Y */
- if(srcStride[0]==dstStride[0])
- memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);
- else{
- uint8_t *srcPtr= src[0];
- uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
- for(i=0; i<srcSliceH; i++)
- {
- memcpy(dstPtr, srcPtr, c->srcW);
- srcPtr+= srcStride[0];
- dstPtr+= dstStride[0];
- }
- }
- if(c->dstFormat==IMGFMT_YV12){
- planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);
- planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);
- }else{
- planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);
- planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);
- }
- return srcSliceH;
- }
- /**
- * bring pointers in YUV order instead of YVU
- */
- static inline void sws_orderYUV(int format, uint8_t * sortedP[], int sortedStride[], uint8_t * p[], int stride[]){
- if(format == IMGFMT_YV12 || format == IMGFMT_YVU9
- || format == IMGFMT_444P || format == IMGFMT_422P || format == IMGFMT_411P){
- sortedP[0]= p[0];
- sortedP[1]= p[2];
- sortedP[2]= p[1];
- sortedStride[0]= stride[0];
- sortedStride[1]= stride[2];
- sortedStride[2]= stride[1];
- }
- else if(isPacked(format) || isGray(format) || format == IMGFMT_Y8)
- {
- sortedP[0]= p[0];
- sortedP[1]=
- sortedP[2]= NULL;
- sortedStride[0]= stride[0];
- sortedStride[1]=
- sortedStride[2]= 0;
- }
- else if(format == IMGFMT_I420 || format == IMGFMT_IYUV)
- {
- sortedP[0]= p[0];
- sortedP[1]= p[1];
- sortedP[2]= p[2];
- sortedStride[0]= stride[0];
- sortedStride[1]= stride[1];
- sortedStride[2]= stride[2];
- }else{
- MSG_ERR("internal error in orderYUVn");
- }
- }
- /* unscaled copy like stuff (assumes nearly identical formats) */
- static int simpleCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]){
- if(isPacked(c->srcFormat))
- {
- if(dstStride[0]==srcStride[0])
- memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
- else
- {
- int i;
- uint8_t *srcPtr= src[0];
- uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
- int length=0;
- /* universal length finder */
- while(length+c->srcW <= ABS(dstStride[0])
- && length+c->srcW <= ABS(srcStride[0])) length+= c->srcW;
- ASSERT(length!=0);
- for(i=0; i<srcSliceH; i++)
- {
- memcpy(dstPtr, srcPtr, length);
- srcPtr+= srcStride[0];
- dstPtr+= dstStride[0];
- }
- }
- }
- else
- { /* Planar YUV or gray */
- int plane;
- for(plane=0; plane<3; plane++)
- {
- int length= plane==0 ? c->srcW : -((-c->srcW )>>c->chrDstHSubSample);
- int y= plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
- int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
- if((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)
- {
- if(!isGray(c->dstFormat))
- memset(dst[plane], 128, dstStride[plane]*height);
- }
- else
- {
- if(dstStride[plane]==srcStride[plane])
- memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);
- else
- {
- int i;
- uint8_t *srcPtr= src[plane];
- uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
- for(i=0; i<height; i++)
- {
- memcpy(dstPtr, srcPtr, length);
- srcPtr+= srcStride[plane];
- dstPtr+= dstStride[plane];
- }
- }
- }
- }
- }
- return srcSliceH;
- }
- static int remove_dup_fourcc(int fourcc)
- {
- switch(fourcc)
- {
- case IMGFMT_I420:
- case IMGFMT_IYUV: return IMGFMT_YV12;
- case IMGFMT_Y8 : return IMGFMT_Y800;
- case IMGFMT_IF09: return IMGFMT_YVU9;
- default: return fourcc;
- }
- }
- static void getSubSampleFactors(int *h, int *v, int format){
- switch(format){
- case IMGFMT_UYVY:
- case IMGFMT_YUY2:
- *h=1;
- *v=0;
- break;
- case IMGFMT_YV12:
- case IMGFMT_Y800: //FIXME remove after different subsamplings are fully implemented
- *h=1;
- *v=1;
- break;
- case IMGFMT_YVU9:
- *h=2;
- *v=2;
- break;
- case IMGFMT_444P:
- *h=0;
- *v=0;
- break;
- case IMGFMT_422P:
- *h=1;
- *v=0;
- break;
- case IMGFMT_411P:
- *h=2;
- *v=0;
- break;
- default:
- *h=0;
- *v=0;
- break;
- }
- }
- static uint16_t roundToInt16(int64_t f){
- int r= (f + (1<<15))>>16;
- if(r<-0x7FFF) return 0x8000;
- else if(r> 0x7FFF) return 0x7FFF;
- else return r;
- }
- /**
- * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]
- * @param fullRange if 1 then the luma range is 0..255 if 0 its 16..235
- * @return -1 if not supported
- */
- int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){
- int64_t crv = inv_table[0];
- int64_t cbu = inv_table[1];
- int64_t cgu = -inv_table[2];
- int64_t cgv = -inv_table[3];
- int64_t cy = 1<<16;
- int64_t oy = 0;
- if(isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
- memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
- memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
- c->brightness= brightness;
- c->contrast = contrast;
- c->saturation= saturation;
- c->srcRange = srcRange;
- c->dstRange = dstRange;
- c->uOffset= 0x0400040004000400LL;
- c->vOffset= 0x0400040004000400LL;
- if(!srcRange){
- cy= (cy*255) / 219;
- oy= 16<<16;
- }
- cy = (cy *contrast )>>16;
- crv= (crv*contrast * saturation)>>32;
- cbu= (cbu*contrast * saturation)>>32;
- cgu= (cgu*contrast * saturation)>>32;
- cgv= (cgv*contrast * saturation)>>32;
- oy -= 256*brightness;
- c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
- c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
- c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
- c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
- c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
- c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
- yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
- //FIXME factorize
- #ifdef HAVE_ALTIVEC
- yuv2rgb_altivec_init_tables (c, inv_table);
- #endif
- return 0;
- }
- /**
- * @return -1 if not supported
- */
- int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){
- if(isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
- *inv_table = c->srcColorspaceTable;
- *table = c->dstColorspaceTable;
- *srcRange = c->srcRange;
- *dstRange = c->dstRange;
- *brightness= c->brightness;
- *contrast = c->contrast;
- *saturation= c->saturation;
-
- return 0;
- }
- SwsContext *sws_getContext(int srcW, int srcH, int origSrcFormat, int dstW, int dstH, int origDstFormat, int flags,
- SwsFilter *srcFilter, SwsFilter *dstFilter){
- SwsContext *c;
- int i;
- int usesVFilter, usesHFilter;
- int unscaled, needsDither;
- int srcFormat, dstFormat;
- SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};
- #ifdef ARCH_X86
- if(flags & SWS_CPU_CAPS_MMX)
- asm volatile("emmsnt"::: "memory");
- #endif
- #ifndef RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off
- flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC);
- #ifdef HAVE_MMX2
- flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
- #elif defined (HAVE_3DNOW)
- flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
- #elif defined (HAVE_MMX)
- flags |= SWS_CPU_CAPS_MMX;
- #elif defined (HAVE_ALTIVEC)
- flags |= SWS_CPU_CAPS_ALTIVEC;
- #endif
- #endif
- if(clip_table[512] != 255) globalInit();
- if(rgb15to16 == NULL) sws_rgb2rgb_init(flags);
- /* avoid duplicate Formats, so we don't need to check to much */
- srcFormat = remove_dup_fourcc(origSrcFormat);
- dstFormat = remove_dup_fourcc(origDstFormat);
- unscaled = (srcW == dstW && srcH == dstH);
- needsDither= (isBGR(dstFormat) || isRGB(dstFormat))
- && (dstFormat&0xFF)<24
- && ((dstFormat&0xFF)<(srcFormat&0xFF) || (!(isRGB(srcFormat) || isBGR(srcFormat))));
- if(!isSupportedIn(srcFormat))
- {
- MSG_ERR("swScaler: %s is not supported as input formatn", vo_format_name(srcFormat));
- return NULL;
- }
- if(!isSupportedOut(dstFormat))
- {
- MSG_ERR("swScaler: %s is not supported as output formatn", vo_format_name(dstFormat));
- return NULL;
- }
- /* sanity check */
- 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
- {
- MSG_ERR("swScaler: %dx%d -> %dx%d is invalid scaling dimensionn",
- srcW, srcH, dstW, dstH);
- return NULL;
- }
- if(!dstFilter) dstFilter= &dummyFilter;
- if(!srcFilter) srcFilter= &dummyFilter;
- c= memalign(64, sizeof(SwsContext));
- memset(c, 0, sizeof(SwsContext));
- c->srcW= srcW;
- c->srcH= srcH;
- c->dstW= dstW;
- c->dstH= dstH;
- c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;
- c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;
- c->flags= flags;
- c->dstFormat= dstFormat;
- c->srcFormat= srcFormat;
- c->origDstFormat= origDstFormat;
- c->origSrcFormat= origSrcFormat;
- c->vRounder= 4* 0x0001000100010001ULL;
- usesHFilter= usesVFilter= 0;
- if(dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesVFilter=1;
- if(dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesHFilter=1;
- if(dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesVFilter=1;
- if(dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesHFilter=1;
- if(srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesVFilter=1;
- if(srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesHFilter=1;
- if(srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesVFilter=1;
- if(srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesHFilter=1;
- getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);
- getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);
- // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation
- if((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;
- // drop some chroma lines if the user wants it
- c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;
- c->chrSrcVSubSample+= c->vChrDrop;
- // drop every 2. pixel for chroma calculation unless user wants full chroma
- if((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP))
- c->chrSrcHSubSample=1;
- c->chrIntHSubSample= c->chrDstHSubSample;
- c->chrIntVSubSample= c->chrSrcVSubSample;
- // note the -((-x)>>y) is so that we allways round toward +inf
- c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);
- c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);
- c->chrDstW= -((-dstW) >> c->chrDstHSubSample);
- c->chrDstH= -((-dstH) >> c->chrDstVSubSample);
- sws_setColorspaceDetails(c, Inverse_Table_6_9[SWS_CS_DEFAULT], 0, Inverse_Table_6_9[SWS_CS_DEFAULT] /* FIXME*/, 0, 0, 1<<16, 1<<16);
- /* unscaled special Cases */
- if(unscaled && !usesHFilter && !usesVFilter)
- {
- /* yv12_to_nv12 */
- if(srcFormat == IMGFMT_YV12 && dstFormat == IMGFMT_NV12)
- {
- c->swScale= PlanarToNV12Wrapper;
- }
- /* yuv2bgr */
- if((srcFormat==IMGFMT_YV12 || srcFormat==IMGFMT_422P) && (isBGR(dstFormat) || isRGB(dstFormat)))
- {
- c->swScale= yuv2rgb_get_func_ptr(c);
- }
-
- if( srcFormat==IMGFMT_YVU9 && dstFormat==IMGFMT_YV12 )
- {
- c->swScale= yvu9toyv12Wrapper;
- }
- /* bgr24toYV12 */
- if(srcFormat==IMGFMT_BGR24 && dstFormat==IMGFMT_YV12)
- c->swScale= bgr24toyv12Wrapper;
-
- /* rgb/bgr -> rgb/bgr (no dither needed forms) */
- if( (isBGR(srcFormat) || isRGB(srcFormat))
- && (isBGR(dstFormat) || isRGB(dstFormat))
- && !needsDither)
- c->swScale= rgb2rgbWrapper;
- /* LQ converters if -sws 0 or -sws 4*/
- if(c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
- /* rgb/bgr -> rgb/bgr (dither needed forms) */
- if( (isBGR(srcFormat) || isRGB(srcFormat))
- && (isBGR(dstFormat) || isRGB(dstFormat))
- && needsDither)
- c->swScale= rgb2rgbWrapper;
- /* yv12_to_yuy2 */
- if(srcFormat == IMGFMT_YV12 &&
- (dstFormat == IMGFMT_YUY2 || dstFormat == IMGFMT_UYVY))
- {
- if (dstFormat == IMGFMT_YUY2)
- c->swScale= PlanarToYuy2Wrapper;
- else
- c->swScale= PlanarToUyvyWrapper;
- }
- }
- #ifdef HAVE_ALTIVEC
- if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
- ((srcFormat == IMGFMT_YV12 &&
- (dstFormat == IMGFMT_YUY2 || dstFormat == IMGFMT_UYVY)))) {
- // unscaled YV12 -> packed YUV, we want speed
- if (dstFormat == IMGFMT_YUY2)
- c->swScale= yv12toyuy2_unscaled_altivec;
- else
- c->swScale= yv12touyvy_unscaled_altivec;
- }
- #endif
- /* simple copy */
- if( srcFormat == dstFormat
- || (isPlanarYUV(srcFormat) && isGray(dstFormat))
- || (isPlanarYUV(dstFormat) && isGray(srcFormat))
- )
- {
- c->swScale= simpleCopy;
- }
- if(c->swScale){
- if(flags&SWS_PRINT_INFO)
- MSG_INFO("SwScaler: using unscaled %s -> %s special convertern",
- vo_format_name(srcFormat), vo_format_name(dstFormat));
- return c;
- }
- }
- if(flags & SWS_CPU_CAPS_MMX2)
- {
- c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;
- if(!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))
- {
- if(flags&SWS_PRINT_INFO)
- MSG_INFO("SwScaler: output Width is not a multiple of 32 -> no MMX2 scalern");
- }
- if(usesHFilter) c->canMMX2BeUsed=0;
- }
- else
- c->canMMX2BeUsed=0;
- c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;
- c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;
- // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst
- // but only for the FAST_BILINEAR mode otherwise do correct scaling
- // n-2 is the last chrominance sample available
- // this is not perfect, but noone shuld notice the difference, the more correct variant
- // would be like the vertical one, but that would require some special code for the
- // first and last pixel
- if(flags&SWS_FAST_BILINEAR)
- {
- if(c->canMMX2BeUsed)
- {
- c->lumXInc+= 20;
- c->chrXInc+= 20;
- }
- //we don't use the x86asm scaler if mmx is available
- else if(flags & SWS_CPU_CAPS_MMX)
- {
- c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;
- c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;
- }
- }
- /* precalculate horizontal scaler filter coefficients */
- {
- const int filterAlign=
- (flags & SWS_CPU_CAPS_MMX) ? 4 :
- (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
- 1;
- initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,
- srcW , dstW, filterAlign, 1<<14,
- (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
- srcFilter->lumH, dstFilter->lumH);
- initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,
- c->chrSrcW, c->chrDstW, filterAlign, 1<<14,
- (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
- srcFilter->chrH, dstFilter->chrH);
- #ifdef ARCH_X86
- // can't downscale !!!
- if(c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
- {
- c->lumMmx2Filter = (int16_t*)memalign(8, (dstW /8+8)*sizeof(int16_t));
- c->chrMmx2Filter = (int16_t*)memalign(8, (c->chrDstW /4+8)*sizeof(int16_t));
- c->lumMmx2FilterPos= (int32_t*)memalign(8, (dstW /2/8+8)*sizeof(int32_t));
- c->chrMmx2FilterPos= (int32_t*)memalign(8, (c->chrDstW/2/4+8)*sizeof(int32_t));
- initMMX2HScaler( dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);
- initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
- }
- #endif
- } // Init Horizontal stuff
- /* precalculate vertical scaler filter coefficients */
- {
- const int filterAlign=
- (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :
- 1;
- initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,
- srcH , dstH, filterAlign, (1<<12)-4,
- (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC) : flags,
- srcFilter->lumV, dstFilter->lumV);
- initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,
- c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,
- (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
- srcFilter->chrV, dstFilter->chrV);
- }
- // Calculate Buffer Sizes so that they won't run out while handling these damn slices
- c->vLumBufSize= c->vLumFilterSize;
- c->vChrBufSize= c->vChrFilterSize;
- for(i=0; i<dstH; i++)
- {
- int chrI= i*c->chrDstH / dstH;
- int nextSlice= MAX(c->vLumFilterPos[i ] + c->vLumFilterSize - 1,
- ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));
- nextSlice>>= c->chrSrcVSubSample;
- nextSlice<<= c->chrSrcVSubSample;
- if(c->vLumFilterPos[i ] + c->vLumBufSize < nextSlice)
- c->vLumBufSize= nextSlice - c->vLumFilterPos[i ];
- if(c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))
- c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];
- }
- // allocate pixbufs (we use dynamic allocation because otherwise we would need to
- c->lumPixBuf= (int16_t**)memalign(4, c->vLumBufSize*2*sizeof(int16_t*));
- c->chrPixBuf= (int16_t**)memalign(4, c->vChrBufSize*2*sizeof(int16_t*));
- //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)
- for(i=0; i<c->vLumBufSize; i++)
- c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= (uint16_t*)memalign(8, 4000);
- for(i=0; i<c->vChrBufSize; i++)
- c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= (uint16_t*)memalign(8, 8000);
- //try to avoid drawing green stuff between the right end and the stride end
- for(i=0; i<c->vLumBufSize; i++) memset(c->lumPixBuf[i], 0, 4000);
- for(i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, 8000);
- ASSERT(c->chrDstH <= dstH)
- if(flags&SWS_PRINT_INFO)
- {
- #ifdef DITHER1XBPP
- char *dither= " dithered";
- #else
- char *dither= "";
- #endif
- if(flags&SWS_FAST_BILINEAR)
- MSG_INFO("nSwScaler: FAST_BILINEAR scaler, ");
- else if(flags&SWS_BILINEAR)
- MSG_INFO("nSwScaler: BILINEAR scaler, ");
- else if(flags&SWS_BICUBIC)
- MSG_INFO("nSwScaler: BICUBIC scaler, ");
- else if(flags&SWS_X)
- MSG_INFO("nSwScaler: Experimental scaler, ");
- else if(flags&SWS_POINT)
- MSG_INFO("nSwScaler: Nearest Neighbor / POINT scaler, ");
- else if(flags&SWS_AREA)
- MSG_INFO("nSwScaler: Area Averageing scaler, ");
- else if(flags&SWS_BICUBLIN)
- MSG_INFO("nSwScaler: luma BICUBIC / chroma BILINEAR scaler, ");
- else if(flags&SWS_GAUSS)
- MSG_INFO("nSwScaler: Gaussian scaler, ");
- else if(flags&SWS_SINC)
- MSG_INFO("nSwScaler: Sinc scaler, ");
- else if(flags&SWS_LANCZOS)
- MSG_INFO("nSwScaler: Lanczos scaler, ");
- else if(flags&SWS_SPLINE)
- MSG_INFO("nSwScaler: Bicubic spline scaler, ");
- else
- MSG_INFO("nSwScaler: ehh flags invalid?! ");
- if(dstFormat==IMGFMT_BGR15 || dstFormat==IMGFMT_BGR16)
- MSG_INFO("from %s to%s %s ",
- vo_format_name(srcFormat), dither, vo_format_name(dstFormat));
- else
- MSG_INFO("from %s to %s ",
- vo_format_name(srcFormat), vo_format_name(dstFormat));
- if(flags & SWS_CPU_CAPS_MMX2)
- MSG_INFO("using MMX2n");
- else if(flags & SWS_CPU_CAPS_3DNOW)
- MSG_INFO("using 3DNOWn");
- else if(flags & SWS_CPU_CAPS_MMX)
- MSG_INFO("using MMXn");
- else if(flags & SWS_CPU_CAPS_ALTIVEC)
- MSG_INFO("using AltiVecn");
- else
- MSG_INFO("using Cn");
- }
- if(flags & SWS_PRINT_INFO)
- {
- if(flags & SWS_CPU_CAPS_MMX)
- {
- if(c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))
- MSG_V("SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scalingn");
- else
- {
- if(c->hLumFilterSize==4)
- MSG_V("SwScaler: using 4-tap MMX scaler for horizontal luminance scalingn");
- else if(c->hLumFilterSize==8)
- MSG_V("SwScaler: using 8-tap MMX scaler for horizontal luminance scalingn");
- else
- MSG_V("SwScaler: using n-tap MMX scaler for horizontal luminance scalingn");
- if(c->hChrFilterSize==4)
- MSG_V("SwScaler: using 4-tap MMX scaler for horizontal chrominance scalingn");
- else if(c->hChrFilterSize==8)
- MSG_V("SwScaler: using 8-tap MMX scaler for horizontal chrominance scalingn");
- else
- MSG_V("SwScaler: using n-tap MMX scaler for horizontal chrominance scalingn");
- }
- }
- else
- {
- #ifdef ARCH_X86
- MSG_V("SwScaler: using X86-Asm scaler for horizontal scalingn");
- #else
- if(flags & SWS_FAST_BILINEAR)
- MSG_V("SwScaler: using FAST_BILINEAR C scaler for horizontal scalingn");
- else
- MSG_V("SwScaler: using C scaler for horizontal scalingn");
- #endif
- }
- if(isPlanarYUV(dstFormat))
- {
- if(c->vLumFilterSize==1)
- MSG_V("SwScaler: using 1-tap %s "scaler" for vertical scaling (YV12 like)n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else
- MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- }
- else
- {
- if(c->vLumFilterSize==1 && c->vChrFilterSize==2)
- MSG_V("SwScaler: using 1-tap %s "scaler" for vertical luminance scaling (BGR)n"
- "SwScaler: 2-tap scaler for vertical chrominance scaling (BGR)n",(flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else if(c->vLumFilterSize==2 && c->vChrFilterSize==2)
- MSG_V("SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else
- MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (BGR)n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- }
- if(dstFormat==IMGFMT_BGR24)
- MSG_V("SwScaler: using %s YV12->BGR24 Convertern",
- (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));
- else if(dstFormat==IMGFMT_BGR32)
- MSG_V("SwScaler: using %s YV12->BGR32 Convertern", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else if(dstFormat==IMGFMT_BGR16)
- MSG_V("SwScaler: using %s YV12->BGR16 Convertern", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- else if(dstFormat==IMGFMT_BGR15)
- MSG_V("SwScaler: using %s YV12->BGR15 Convertern", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");
- MSG_V("SwScaler: %dx%d -> %dx%dn", srcW, srcH, dstW, dstH);
- }
- if(flags & SWS_PRINT_INFO)
- {
- MSG_DBG2("SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%dn",
- c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);
- MSG_DBG2("SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%dn",
- c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);
- }
- c->swScale= getSwsFunc(flags);
- return c;
- }
- /**
- * swscale warper, so we don't need to export the SwsContext.
- * assumes planar YUV to be in YUV order instead of YVU
- */
- int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]){
- //copy strides, so they can safely be modified
- int srcStride2[3]= {srcStride[0], srcStride[1], srcStride[2]};
- int dstStride2[3]= {dstStride[0], dstStride[1], dstStride[2]};
- return c->swScale(c, src, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);
- }
- /**
- * swscale warper, so we don't need to export the SwsContext
- */
- int sws_scale(SwsContext *c, uint8_t* srcParam[], int srcStrideParam[], int srcSliceY,
- int srcSliceH, uint8_t* dstParam[], int dstStrideParam[]){
- int srcStride[3];
- int dstStride[3];
- uint8_t *src[3];
- uint8_t *dst[3];
- sws_orderYUV(c->origSrcFormat, src, srcStride, srcParam, srcStrideParam);
- sws_orderYUV(c->origDstFormat, dst, dstStride, dstParam, dstStrideParam);
- //printf("sws: slice %d %dn", srcSliceY, srcSliceH);
- return c->swScale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
- }
- SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,
- float lumaSharpen, float chromaSharpen,
- float chromaHShift, float chromaVShift,
- int verbose)
- {
- SwsFilter *filter= malloc(sizeof(SwsFilter));
- if(lumaGBlur!=0.0){
- filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);
- filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);
- }else{
- filter->lumH= sws_getIdentityVec();
- filter->lumV= sws_getIdentityVec();
- }
- if(chromaGBlur!=0.0){
- filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);
- filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);
- }else{
- filter->chrH= sws_getIdentityVec();
- filter->chrV= sws_getIdentityVec();
- }
- if(chromaSharpen!=0.0){
- SwsVector *g= sws_getConstVec(-1.0, 3);
- SwsVector *id= sws_getConstVec(10.0/chromaSharpen, 1);
- g->coeff[1]=2.0;
- sws_addVec(id, g);
- sws_convVec(filter->chrH, id);
- sws_convVec(filter->chrV, id);
- sws_freeVec(g);
- sws_freeVec(id);
- }
- if(lumaSharpen!=0.0){
- SwsVector *g= sws_getConstVec(-1.0, 3);
- SwsVector *id= sws_getConstVec(10.0/lumaSharpen, 1);
- g->coeff[1]=2.0;
- sws_addVec(id, g);
- sws_convVec(filter->lumH, id);
- sws_convVec(filter->lumV, id);
- sws_freeVec(g);
- sws_freeVec(id);
- }
- if(chromaHShift != 0.0)
- sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));
- if(chromaVShift != 0.0)
- sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));
- sws_normalizeVec(filter->chrH, 1.0);
- sws_normalizeVec(filter->chrV, 1.0);
- sws_normalizeVec(filter->lumH, 1.0);
- sws_normalizeVec(filter->lumV, 1.0);
- if(verbose) sws_printVec(filter->chrH);
- if(verbose) sws_printVec(filter->lumH);
- return filter;
- }
- /**
- * returns a normalized gaussian curve used to filter stuff
- * quality=3 is high quality, lowwer is lowwer quality
- */
- SwsVector *sws_getGaussianVec(double variance, double quality){
- const int length= (int)(variance*quality + 0.5) | 1;
- int i;
- double *coeff= memalign(sizeof(double), length*sizeof(double));
- double middle= (length-1)*0.5;
- SwsVector *vec= malloc(sizeof(SwsVector));
- vec->coeff= coeff;
- vec->length= length;
- for(i=0; i<length; i++)
- {
- double dist= i-middle;
- coeff[i]= exp( -dist*dist/(2*variance*variance) ) / sqrt(2*variance*PI);
- }
- sws_normalizeVec(vec, 1.0);
- return vec;
- }
- SwsVector *sws_getConstVec(double c, int length){
- int i;
- double *coeff= memalign(sizeof(double), length*sizeof(double));
- SwsVector *vec= malloc(sizeof(SwsVector));
- vec->coeff= coeff;
- vec->length= length;
- for(i=0; i<length; i++)
- coeff[i]= c;
- return vec;
- }
- SwsVector *sws_getIdentityVec(void){
- double *coeff= memalign(sizeof(double), sizeof(double));
- SwsVector *vec= malloc(sizeof(SwsVector));
- coeff[0]= 1.0;
- vec->coeff= coeff;
- vec->length= 1;
- return vec;
- }
- void sws_normalizeVec(SwsVector *a, double height){
- int i;
- double sum=0;
- double inv;
- for(i=0; i<a->length; i++)
- sum+= a->coeff[i];
- inv= height/sum;
- for(i=0; i<a->length; i++)
- a->coeff[i]*= inv;
- }
- void sws_scaleVec(SwsVector *a, double scalar){
- int i;
- for(i=0; i<a->length; i++)
- a->coeff[i]*= scalar;
- }
- static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){
- int length= a->length + b->length - 1;
- double *coeff= memalign(sizeof(double), length*sizeof(double));
- int i, j;
- SwsVector *vec= malloc(sizeof(SwsVector));
- vec->coeff= coeff;
- vec->length= length;
- for(i=0; i<length; i++) coeff[i]= 0.0;
- for(i=0; i<a->length; i++)
- {
- for(j=0; j<b->length; j++)
- {
- coeff[i+j]+= a->coeff[i]*b->coeff[j];
- }
- }
- return vec;
- }
- static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){
- int length= MAX(a->length, b->length);
- double *coeff= memalign(sizeof(double), length*sizeof(double));
- int i;
- SwsVector *vec= malloc(sizeof(SwsVector));
- vec->coeff= coeff;
- vec->length= length;
- for(i=0; i<length; i++) coeff[i]= 0.0;
- for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
- for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];
- return vec;
- }
- static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){
- int length= MAX(a->length, b->length);
- double *coeff= memalign(sizeof(double), length*sizeof(double));
- int i;
- SwsVector *vec= malloc(sizeof(SwsVector));
- vec->coeff= coeff;
- vec->length= length;
- for(i=0; i<length; i++) coeff[i]= 0.0;
- for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];
- for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];
- return vec;
- }
- /* shift left / or right if "shift" is negative */
- static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){
- int length= a->length + ABS(shift)*2;
- double *coeff= memalign(sizeof(double), length*sizeof(double));
- int i;
- SwsVector *vec= malloc(sizeof(SwsVector));
- vec->coeff= coeff;
- vec->length= length;
- for(i=0; i<length; i++) coeff[i]= 0.0;
- for(i=0; i<a->length; i++)
- {
- coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];
- }
- return vec;
- }
- void sws_shiftVec(SwsVector *a, int shift){
- SwsVector *shifted= sws_getShiftedVec(a, shift);
- free(a->coeff);
- a->coeff= shifted->coeff;
- a->length= shifted->length;
- free(shifted);
- }
- void sws_addVec(SwsVector *a, SwsVector *b){
- SwsVector *sum= sws_sumVec(a, b);
- free(a->coeff);
- a->coeff= sum->coeff;
- a->length= sum->length;
- free(sum);
- }
- void sws_subVec(SwsVector *a, SwsVector *b){
- SwsVector *diff= sws_diffVec(a, b);
- free(a->coeff);
- a->coeff= diff->coeff;
- a->length= diff->length;
- free(diff);
- }
- void sws_convVec(SwsVector *a, SwsVector *b){
- SwsVector *conv= sws_getConvVec(a, b);
- free(a->coeff);
- a->coeff= conv->coeff;
- a->length= conv->length;
- free(conv);
- }
- SwsVector *sws_cloneVec(SwsVector *a){
- double *coeff= memalign(sizeof(double), a->length*sizeof(double));
- int i;
- SwsVector *vec= malloc(sizeof(SwsVector));
- vec->coeff= coeff;
- vec->length= a->length;
- for(i=0; i<a->length; i++) coeff[i]= a->coeff[i];
- return vec;
- }
- void sws_printVec(SwsVector *a){
- int i;
- double max=0;
- double min=0;
- double range;
- for(i=0; i<a->length; i++)
- if(a->coeff[i]>max) max= a->coeff[i];
- for(i=0; i<a->length; i++)
- if(a->coeff[i]<min) min= a->coeff[i];
- range= max - min;
- for(i=0; i<a->length; i++)
- {
- int x= (int)((a->coeff[i]-min)*60.0/range +0.5);
- MSG_DBG2("%1.3f ", a->coeff[i]);
- for(;x>0; x--) MSG_DBG2(" ");
- MSG_DBG2("|n");
- }
- }
- void sws_freeVec(SwsVector *a){
- if(!a) return;
- if(a->coeff) free(a->coeff);
- a->coeff=NULL;
- a->length=0;
- free(a);
- }
- void sws_freeFilter(SwsFilter *filter){
- if(!filter) return;
- if(filter->lumH) sws_freeVec(filter->lumH);
- if(filter->lumV) sws_freeVec(filter->lumV);
- if(filter->chrH) sws_freeVec(filter->chrH);
- if(filter->chrV) sws_freeVec(filter->chrV);
- free(filter);
- }
- void sws_freeContext(SwsContext *c){
- int i;
- if(!c) return;
- if(c->lumPixBuf)
- {
- for(i=0; i<c->vLumBufSize; i++)
- {
- if(c->lumPixBuf[i]) free(c->lumPixBuf[i]);
- c->lumPixBuf[i]=NULL;
- }
- free(c->lumPixBuf);
- c->lumPixBuf=NULL;
- }
- if(c->chrPixBuf)
- {
- for(i=0; i<c->vChrBufSize; i++)
- {
- if(c->chrPixBuf[i]) free(c->chrPixBuf[i]);
- c->chrPixBuf[i]=NULL;
- }
- free(c->chrPixBuf);
- c->chrPixBuf=NULL;
- }
- if(c->vLumFilter) free(c->vLumFilter);
- c->vLumFilter = NULL;
- if(c->vChrFilter) free(c->vChrFilter);
- c->vChrFilter = NULL;
- if(c->hLumFilter) free(c->hLumFilter);
- c->hLumFilter = NULL;
- if(c->hChrFilter) free(c->hChrFilter);
- c->hChrFilter = NULL;
- if(c->vLumFilterPos) free(c->vLumFilterPos);
- c->vLumFilterPos = NULL;
- if(c->vChrFilterPos) free(c->vChrFilterPos);
- c->vChrFilterPos = NULL;
- if(c->hLumFilterPos) free(c->hLumFilterPos);
- c->hLumFilterPos = NULL;
- if(c->hChrFilterPos) free(c->hChrFilterPos);
- c->hChrFilterPos = NULL;
- if(c->lumMmx2Filter) free(c->lumMmx2Filter);
- c->lumMmx2Filter=NULL;
- if(c->chrMmx2Filter) free(c->chrMmx2Filter);
- c->chrMmx2Filter=NULL;
- if(c->lumMmx2FilterPos) free(c->lumMmx2FilterPos);
- c->lumMmx2FilterPos=NULL;
- if(c->chrMmx2FilterPos) free(c->chrMmx2FilterPos);
- c->chrMmx2FilterPos=NULL;
- if(c->yuvTable) free(c->yuvTable);
- c->yuvTable=NULL;
- free(c);
- }