* along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
- * the C code (not assembly, mmx, ...) of the swscaler which has been written
- * by Michael Niedermayer can be used under the LGPL license too
+ * the C code (not assembly, mmx, ...) of this file can be used
+ * under the LGPL license too
*/
#undef REAL_MOVNTQ
#define PREFETCH "prefetchnta"
#define PREFETCHW "prefetcht0"
#else
-#define PREFETCH "/nop"
-#define PREFETCHW "/nop"
+#define PREFETCH " # nop"
+#define PREFETCHW " # nop"
#endif
#ifdef HAVE_MMX2
#define SFENCE "sfence"
#else
-#define SFENCE "/nop"
+#define SFENCE " # nop"
#endif
#ifdef HAVE_MMX2
"mov (%%"REG_d"), %%"REG_S" \n\t"\
"jb 1b \n\t"\
:: "r" (&c->redDither),\
- "r" (dest), "p" (width)\
+ "r" (dest), "g" (width)\
: "%"REG_a, "%"REG_d, "%"REG_S\
);
"mov (%%"REG_d"), %%"REG_S" \n\t"\
"jb 1b \n\t"\
:: "r" (&c->redDither),\
- "r" (dest), "p" (width)\
+ "r" (dest), "g" (width)\
: "%"REG_a, "%"REG_d, "%"REG_S\
);
static inline void RENAME(yuy2ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
{
-#if defined (HAVE_MMX2) || defined (HAVE_3DNOW)
+#ifdef HAVE_MMX
asm volatile(
"movq "MANGLE(bm01010101)", %%mm4\n\t"
"mov %0, %%"REG_a" \n\t"
"1: \n\t"
"movq (%1, %%"REG_a",4), %%mm0 \n\t"
"movq 8(%1, %%"REG_a",4), %%mm1 \n\t"
- "movq (%2, %%"REG_a",4), %%mm2 \n\t"
- "movq 8(%2, %%"REG_a",4), %%mm3 \n\t"
- PAVGB(%%mm2, %%mm0)
- PAVGB(%%mm3, %%mm1)
"psrlw $8, %%mm0 \n\t"
"psrlw $8, %%mm1 \n\t"
"packuswb %%mm1, %%mm0 \n\t"
"pand %%mm4, %%mm1 \n\t"
"packuswb %%mm0, %%mm0 \n\t"
"packuswb %%mm1, %%mm1 \n\t"
- "movd %%mm0, (%4, %%"REG_a") \n\t"
- "movd %%mm1, (%3, %%"REG_a") \n\t"
+ "movd %%mm0, (%3, %%"REG_a") \n\t"
+ "movd %%mm1, (%2, %%"REG_a") \n\t"
"add $4, %%"REG_a" \n\t"
" js 1b \n\t"
- : : "g" (-width), "r" (src1+width*4), "r" (src2+width*4), "r" (dstU+width), "r" (dstV+width)
+ : : "g" (-width), "r" (src1+width*4), "r" (dstU+width), "r" (dstV+width)
: "%"REG_a
);
#else
int i;
for(i=0; i<width; i++)
{
- dstU[i]= (src1[4*i + 1] + src2[4*i + 1])>>1;
- dstV[i]= (src1[4*i + 3] + src2[4*i + 3])>>1;
+ dstU[i]= src1[4*i + 1];
+ dstV[i]= src1[4*i + 3];
}
#endif
+ assert(src1 == src2);
}
//this is allmost identical to the previous, end exists only cuz yuy2ToY/UV)(dst, src+1, ...) would have 100% unaligned accesses
static inline void RENAME(uyvyToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
{
-#if defined (HAVE_MMX2) || defined (HAVE_3DNOW)
+#ifdef HAVE_MMX
asm volatile(
"movq "MANGLE(bm01010101)", %%mm4\n\t"
"mov %0, %%"REG_a" \n\t"
"1: \n\t"
"movq (%1, %%"REG_a",4), %%mm0 \n\t"
"movq 8(%1, %%"REG_a",4), %%mm1 \n\t"
- "movq (%2, %%"REG_a",4), %%mm2 \n\t"
- "movq 8(%2, %%"REG_a",4), %%mm3 \n\t"
- PAVGB(%%mm2, %%mm0)
- PAVGB(%%mm3, %%mm1)
"pand %%mm4, %%mm0 \n\t"
"pand %%mm4, %%mm1 \n\t"
"packuswb %%mm1, %%mm0 \n\t"
"pand %%mm4, %%mm1 \n\t"
"packuswb %%mm0, %%mm0 \n\t"
"packuswb %%mm1, %%mm1 \n\t"
- "movd %%mm0, (%4, %%"REG_a") \n\t"
- "movd %%mm1, (%3, %%"REG_a") \n\t"
+ "movd %%mm0, (%3, %%"REG_a") \n\t"
+ "movd %%mm1, (%2, %%"REG_a") \n\t"
"add $4, %%"REG_a" \n\t"
" js 1b \n\t"
- : : "g" (-width), "r" (src1+width*4), "r" (src2+width*4), "r" (dstU+width), "r" (dstV+width)
+ : : "g" (-width), "r" (src1+width*4), "r" (dstU+width), "r" (dstV+width)
: "%"REG_a
);
#else
int i;
for(i=0; i<width; i++)
{
- dstU[i]= (src1[4*i + 0] + src2[4*i + 0])>>1;
- dstV[i]= (src1[4*i + 2] + src2[4*i + 2])>>1;
+ dstU[i]= src1[4*i + 0];
+ dstV[i]= src1[4*i + 2];
}
#endif
+ assert(src1 == src2);
}
static inline void RENAME(bgr32ToY)(uint8_t *dst, uint8_t *src, int width)
static inline void RENAME(bgr32ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
+ assert(src1 == src2);
for(i=0; i<width; i++)
{
const int a= ((uint32_t*)src1)[2*i+0];
const int e= ((uint32_t*)src1)[2*i+1];
- const int c= ((uint32_t*)src2)[2*i+0];
- const int d= ((uint32_t*)src2)[2*i+1];
- const int l= (a&0xFF00FF) + (e&0xFF00FF) + (c&0xFF00FF) + (d&0xFF00FF);
- const int h= (a&0x00FF00) + (e&0x00FF00) + (c&0x00FF00) + (d&0x00FF00);
+ const int l= (a&0xFF00FF) + (e&0xFF00FF);
+ const int h= (a&0x00FF00) + (e&0x00FF00);
const int b= l&0x3FF;
const int g= h>>8;
const int r= l>>16;
- dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+2)) + 128;
- dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+2)) + 128;
+ dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+1)) + 128;
+ dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+1)) + 128;
}
}
{
#ifdef HAVE_MMX
asm volatile(
- "mov %4, %%"REG_a" \n\t"
+ "mov %3, %%"REG_a" \n\t"
"movq "MANGLE(w1111)", %%mm5 \n\t"
"movq "MANGLE(bgr2UCoeff)", %%mm6 \n\t"
"pxor %%mm7, %%mm7 \n\t"
ASMALIGN(4)
"1: \n\t"
PREFETCH" 64(%0, %%"REG_d") \n\t"
- PREFETCH" 64(%1, %%"REG_d") \n\t"
#if defined (HAVE_MMX2) || defined (HAVE_3DNOW)
"movq (%0, %%"REG_d"), %%mm0 \n\t"
- "movq (%1, %%"REG_d"), %%mm1 \n\t"
"movq 6(%0, %%"REG_d"), %%mm2 \n\t"
- "movq 6(%1, %%"REG_d"), %%mm3 \n\t"
- PAVGB(%%mm1, %%mm0)
- PAVGB(%%mm3, %%mm2)
"movq %%mm0, %%mm1 \n\t"
"movq %%mm2, %%mm3 \n\t"
"psrlq $24, %%mm0 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
#else
"movd (%0, %%"REG_d"), %%mm0 \n\t"
- "movd (%1, %%"REG_d"), %%mm1 \n\t"
"movd 3(%0, %%"REG_d"), %%mm2 \n\t"
- "movd 3(%1, %%"REG_d"), %%mm3 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
- "punpcklbw %%mm7, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
- "punpcklbw %%mm7, %%mm3 \n\t"
- "paddw %%mm1, %%mm0 \n\t"
- "paddw %%mm3, %%mm2 \n\t"
"paddw %%mm2, %%mm0 \n\t"
"movd 6(%0, %%"REG_d"), %%mm4 \n\t"
- "movd 6(%1, %%"REG_d"), %%mm1 \n\t"
"movd 9(%0, %%"REG_d"), %%mm2 \n\t"
- "movd 9(%1, %%"REG_d"), %%mm3 \n\t"
"punpcklbw %%mm7, %%mm4 \n\t"
- "punpcklbw %%mm7, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
- "punpcklbw %%mm7, %%mm3 \n\t"
- "paddw %%mm1, %%mm4 \n\t"
- "paddw %%mm3, %%mm2 \n\t"
"paddw %%mm4, %%mm2 \n\t"
- "psrlw $2, %%mm0 \n\t"
- "psrlw $2, %%mm2 \n\t"
+ "psrlw $1, %%mm0 \n\t"
+ "psrlw $1, %%mm2 \n\t"
#endif
"movq "MANGLE(bgr2VCoeff)", %%mm1 \n\t"
"movq "MANGLE(bgr2VCoeff)", %%mm3 \n\t"
#if defined (HAVE_MMX2) || defined (HAVE_3DNOW)
"movq 12(%0, %%"REG_d"), %%mm4 \n\t"
- "movq 12(%1, %%"REG_d"), %%mm1 \n\t"
"movq 18(%0, %%"REG_d"), %%mm2 \n\t"
- "movq 18(%1, %%"REG_d"), %%mm3 \n\t"
- PAVGB(%%mm1, %%mm4)
- PAVGB(%%mm3, %%mm2)
"movq %%mm4, %%mm1 \n\t"
"movq %%mm2, %%mm3 \n\t"
"psrlq $24, %%mm4 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
#else
"movd 12(%0, %%"REG_d"), %%mm4 \n\t"
- "movd 12(%1, %%"REG_d"), %%mm1 \n\t"
"movd 15(%0, %%"REG_d"), %%mm2 \n\t"
- "movd 15(%1, %%"REG_d"), %%mm3 \n\t"
"punpcklbw %%mm7, %%mm4 \n\t"
- "punpcklbw %%mm7, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
- "punpcklbw %%mm7, %%mm3 \n\t"
- "paddw %%mm1, %%mm4 \n\t"
- "paddw %%mm3, %%mm2 \n\t"
"paddw %%mm2, %%mm4 \n\t"
"movd 18(%0, %%"REG_d"), %%mm5 \n\t"
- "movd 18(%1, %%"REG_d"), %%mm1 \n\t"
"movd 21(%0, %%"REG_d"), %%mm2 \n\t"
- "movd 21(%1, %%"REG_d"), %%mm3 \n\t"
"punpcklbw %%mm7, %%mm5 \n\t"
- "punpcklbw %%mm7, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
- "punpcklbw %%mm7, %%mm3 \n\t"
- "paddw %%mm1, %%mm5 \n\t"
- "paddw %%mm3, %%mm2 \n\t"
"paddw %%mm5, %%mm2 \n\t"
"movq "MANGLE(w1111)", %%mm5 \n\t"
"psrlw $2, %%mm4 \n\t"
"packsswb %%mm1, %%mm0 \n\t"
"paddb "MANGLE(bgr2UVOffset)", %%mm0 \n\t"
- "movd %%mm0, (%2, %%"REG_a") \n\t"
+ "movd %%mm0, (%1, %%"REG_a") \n\t"
"punpckhdq %%mm0, %%mm0 \n\t"
- "movd %%mm0, (%3, %%"REG_a") \n\t"
+ "movd %%mm0, (%2, %%"REG_a") \n\t"
"add $4, %%"REG_a" \n\t"
" js 1b \n\t"
- : : "r" (src1+width*6), "r" (src2+width*6), "r" (dstU+width), "r" (dstV+width), "g" (-width)
+ : : "r" (src1+width*6), "r" (dstU+width), "r" (dstV+width), "g" (-width)
: "%"REG_a, "%"REG_d
);
#else
int i;
for(i=0; i<width; i++)
{
- int b= src1[6*i + 0] + src1[6*i + 3] + src2[6*i + 0] + src2[6*i + 3];
- int g= src1[6*i + 1] + src1[6*i + 4] + src2[6*i + 1] + src2[6*i + 4];
- int r= src1[6*i + 2] + src1[6*i + 5] + src2[6*i + 2] + src2[6*i + 5];
+ int b= src1[6*i + 0] + src1[6*i + 3];
+ int g= src1[6*i + 1] + src1[6*i + 4];
+ int r= src1[6*i + 2] + src1[6*i + 5];
- dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+2)) + 128;
- dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+2)) + 128;
+ dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+1)) + 128;
+ dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+1)) + 128;
}
#endif
+ assert(src1 == src2);
}
static inline void RENAME(bgr16ToY)(uint8_t *dst, uint8_t *src, int width)
static inline void RENAME(bgr16ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
+ assert(src1==src2);
for(i=0; i<width; i++)
{
int d0= ((uint32_t*)src1)[i];
- int d1= ((uint32_t*)src2)[i];
- int dl= (d0&0x07E0F81F) + (d1&0x07E0F81F);
- int dh= ((d0>>5)&0x07C0F83F) + ((d1>>5)&0x07C0F83F);
+ int dl= (d0&0x07E0F81F);
+ int dh= ((d0>>5)&0x07C0F83F);
int dh2= (dh>>11) + (dh<<21);
int d= dh2 + dl;
int b= d&0x7F;
int r= (d>>11)&0x7F;
int g= d>>21;
- dstU[i]= ((2*RU*r + GU*g + 2*BU*b)>>(RGB2YUV_SHIFT+2-2)) + 128;
- dstV[i]= ((2*RV*r + GV*g + 2*BV*b)>>(RGB2YUV_SHIFT+2-2)) + 128;
+ dstU[i]= ((2*RU*r + GU*g + 2*BU*b)>>(RGB2YUV_SHIFT+1-2)) + 128;
+ dstV[i]= ((2*RV*r + GV*g + 2*BV*b)>>(RGB2YUV_SHIFT+1-2)) + 128;
}
}
static inline void RENAME(bgr15ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
+ assert(src1==src2);
for(i=0; i<width; i++)
{
int d0= ((uint32_t*)src1)[i];
- int d1= ((uint32_t*)src2)[i];
- int dl= (d0&0x03E07C1F) + (d1&0x03E07C1F);
- int dh= ((d0>>5)&0x03E0F81F) + ((d1>>5)&0x03E0F81F);
+ int dl= (d0&0x03E07C1F);
+ int dh= ((d0>>5)&0x03E0F81F);
int dh2= (dh>>11) + (dh<<21);
int d= dh2 + dl;
int b= d&0x7F;
int r= (d>>10)&0x7F;
int g= d>>21;
- dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+2-3)) + 128;
- dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+2-3)) + 128;
+ dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+1-3)) + 128;
+ dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+1-3)) + 128;
}
}
static inline void RENAME(rgb32ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
+ assert(src1==src2);
for(i=0; i<width; i++)
{
const int a= ((uint32_t*)src1)[2*i+0];
const int e= ((uint32_t*)src1)[2*i+1];
- const int c= ((uint32_t*)src2)[2*i+0];
- const int d= ((uint32_t*)src2)[2*i+1];
- const int l= (a&0xFF00FF) + (e&0xFF00FF) + (c&0xFF00FF) + (d&0xFF00FF);
- const int h= (a&0x00FF00) + (e&0x00FF00) + (c&0x00FF00) + (d&0x00FF00);
+ const int l= (a&0xFF00FF) + (e&0xFF00FF);
+ const int h= (a&0x00FF00) + (e&0x00FF00);
const int r= l&0x3FF;
const int g= h>>8;
const int b= l>>16;
- dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+2)) + 128;
- dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+2)) + 128;
+ dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+1)) + 128;
+ dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+1)) + 128;
}
}
static inline void RENAME(rgb24ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
+ assert(src1==src2);
for(i=0; i<width; i++)
{
- int r= src1[6*i + 0] + src1[6*i + 3] + src2[6*i + 0] + src2[6*i + 3];
- int g= src1[6*i + 1] + src1[6*i + 4] + src2[6*i + 1] + src2[6*i + 4];
- int b= src1[6*i + 2] + src1[6*i + 5] + src2[6*i + 2] + src2[6*i + 5];
+ int r= src1[6*i + 0] + src1[6*i + 3];
+ int g= src1[6*i + 1] + src1[6*i + 4];
+ int b= src1[6*i + 2] + src1[6*i + 5];
- dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+2)) + 128;
- dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+2)) + 128;
+ dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+1)) + 128;
+ dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+1)) + 128;
}
}
static inline void RENAME(rgb16ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
+ assert(src1 == src2);
for(i=0; i<width; i++)
{
int d0= ((uint32_t*)src1)[i];
- int d1= ((uint32_t*)src2)[i];
- int dl= (d0&0x07E0F81F) + (d1&0x07E0F81F);
- int dh= ((d0>>5)&0x07C0F83F) + ((d1>>5)&0x07C0F83F);
+ int dl= (d0&0x07E0F81F);
+ int dh= ((d0>>5)&0x07C0F83F);
int dh2= (dh>>11) + (dh<<21);
int d= dh2 + dl;
int r= d&0x7F;
int b= (d>>11)&0x7F;
int g= d>>21;
- dstU[i]= ((2*RU*r + GU*g + 2*BU*b)>>(RGB2YUV_SHIFT+2-2)) + 128;
- dstV[i]= ((2*RV*r + GV*g + 2*BV*b)>>(RGB2YUV_SHIFT+2-2)) + 128;
+ dstU[i]= ((2*RU*r + GU*g + 2*BU*b)>>(RGB2YUV_SHIFT+1-2)) + 128;
+ dstV[i]= ((2*RV*r + GV*g + 2*BV*b)>>(RGB2YUV_SHIFT+1-2)) + 128;
}
}
static inline void RENAME(rgb15ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
+ assert(src1 == src2);
for(i=0; i<width; i++)
{
int d0= ((uint32_t*)src1)[i];
- int d1= ((uint32_t*)src2)[i];
- int dl= (d0&0x03E07C1F) + (d1&0x03E07C1F);
- int dh= ((d0>>5)&0x03E0F81F) + ((d1>>5)&0x03E0F81F);
+ int dl= (d0&0x03E07C1F);
+ int dh= ((d0>>5)&0x03E0F81F);
int dh2= (dh>>11) + (dh<<21);
int d= dh2 + dl;
int g= d&0x7F;
int r= (d>>10)&0x7F;
int b= d>>21;
- dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+2-3)) + 128;
- dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+2-3)) + 128;
+ dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+1-3)) + 128;
+ dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+1-3)) + 128;
}
}
val += ((int)src[srcPos + j])*filter[filterSize*i + j];
}
// filter += hFilterSize;
- dst[i] = FFMIN(FFMAX(0, val>>7), (1<<15)-1); // the cubic equation does overflow ...
+ dst[i] = clip(val>>7, 0, (1<<15)-1); // the cubic equation does overflow ...
// dst[i] = val>>7;
}
#endif
static int firstTime=1; //FIXME move this into the context perhaps
if(flags & SWS_PRINT_INFO && firstTime)
{
- MSG_WARN("SwScaler: Warning: dstStride is not aligned!\n"
+ av_log(c, AV_LOG_WARNING, "SwScaler: Warning: dstStride is not aligned!\n"
"SwScaler: ->cannot do aligned memory acesses anymore\n");
firstTime=0;
}
int i;
if(flags & SWS_ACCURATE_RND){
for(i=0; i<vLumFilterSize; i+=2){
- lumMmxFilter[2*i+0]= lumSrcPtr[i ];
- lumMmxFilter[2*i+1]= lumSrcPtr[i+(vLumFilterSize>1)];
+ lumMmxFilter[2*i+0]= (int32_t)lumSrcPtr[i ];
+ lumMmxFilter[2*i+1]= (int32_t)lumSrcPtr[i+(vLumFilterSize>1)];
lumMmxFilter[2*i+2]=
lumMmxFilter[2*i+3]= vLumFilter[dstY*vLumFilterSize + i ]
+ (vLumFilterSize>1 ? vLumFilter[dstY*vLumFilterSize + i + 1]<<16 : 0);
}
for(i=0; i<vChrFilterSize; i+=2){
- chrMmxFilter[2*i+0]= chrSrcPtr[i ];
- chrMmxFilter[2*i+1]= chrSrcPtr[i+(vChrFilterSize>1)];
+ chrMmxFilter[2*i+0]= (int32_t)chrSrcPtr[i ];
+ chrMmxFilter[2*i+1]= (int32_t)chrSrcPtr[i+(vChrFilterSize>1)];
chrMmxFilter[2*i+2]=
chrMmxFilter[2*i+3]= vChrFilter[chrDstY*vChrFilterSize + i ]
+ (vChrFilterSize>1 ? vChrFilter[chrDstY*vChrFilterSize + i + 1]<<16 : 0);
projects / ffmpeg / blobdiff