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MMX2 horizontal scaler: Determine code size at runtime.

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Originally committed as revision 29510 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Ramiro Polla 2009-08-13 18:31:07 +00:00
parent 0728778885
commit 48f4c61252
2 changed files with 24 additions and 14 deletions
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36
libswscale/swscale.c
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@ -1753,7 +1753,7 @@ error:
}
#ifdef COMPILE_MMX2
static void initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)
static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)
{
uint8_t *fragmentA;
x86_reg imm8OfPShufW1A;
@ -1870,6 +1870,7 @@ static void initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *fi
int maxShift= 3-(d+inc);
int shift=0;
if (filterCode) {
filter[i ] = (( xpos & 0xFFFF) ^ 0xFFFF)>>9;
filter[i+1] = (((xpos+xInc ) & 0xFFFF) ^ 0xFFFF)>>9;
filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;
@ -1892,14 +1893,19 @@ static void initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *fi
filterCode[fragmentPos + imm8OfPShufW2]+= 0x55*shift;
filterPos[i/2]-=shift;
}
}
fragmentPos+= fragmentLength;
if (filterCode)
filterCode[fragmentPos]= RET;
}
xpos+=xInc;
}
if (filterCode)
filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part
return fragmentPos + 1;
}
#endif /* COMPILE_MMX2 */
@ -2808,20 +2814,22 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
(flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
srcFilter->chrH, dstFilter->chrH, c->param);
#define MAX_MMX2_FILTER_CODE_SIZE 10000
#if defined(COMPILE_MMX2)
// can't downscale !!!
if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))
{
c->lumMmx2FilterCodeSize = initMMX2HScaler( dstW, c->lumXInc, NULL, NULL, NULL, 8);
c->chrMmx2FilterCodeSize = initMMX2HScaler(c->chrDstW, c->chrXInc, NULL, NULL, NULL, 4);
#ifdef MAP_ANONYMOUS
c->lumMmx2FilterCode = mmap(NULL, MAX_MMX2_FILTER_CODE_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
c->chrMmx2FilterCode = mmap(NULL, MAX_MMX2_FILTER_CODE_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
c->lumMmx2FilterCode = mmap(NULL, c->lumMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
c->chrMmx2FilterCode = mmap(NULL, c->chrMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
#elif HAVE_VIRTUALALLOC
c->lumMmx2FilterCode = VirtualAlloc(NULL, MAX_MMX2_FILTER_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
c->chrMmx2FilterCode = VirtualAlloc(NULL, MAX_MMX2_FILTER_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
c->lumMmx2FilterCode = VirtualAlloc(NULL, c->lumMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
c->chrMmx2FilterCode = VirtualAlloc(NULL, c->chrMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
#else
c->lumMmx2FilterCode = av_malloc(MAX_MMX2_FILTER_CODE_SIZE);
c->chrMmx2FilterCode = av_malloc(MAX_MMX2_FILTER_CODE_SIZE);
c->lumMmx2FilterCode = av_malloc(c->lumMmx2FilterCodeSize);
c->chrMmx2FilterCode = av_malloc(c->chrMmx2FilterCodeSize);
#endif
c->lumMmx2Filter = av_malloc((dstW /8+8)*sizeof(int16_t));
@ -2833,8 +2841,8 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);
#ifdef MAP_ANONYMOUS
mprotect(c->lumMmx2FilterCode, MAX_MMX2_FILTER_CODE_SIZE, PROT_EXEC | PROT_READ);
mprotect(c->chrMmx2FilterCode, MAX_MMX2_FILTER_CODE_SIZE, PROT_EXEC | PROT_READ);
mprotect(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, PROT_EXEC | PROT_READ);
mprotect(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, PROT_EXEC | PROT_READ);
#endif
}
#endif /* defined(COMPILE_MMX2) */
@ -3504,11 +3512,11 @@ void sws_freeContext(SwsContext *c){
#if ARCH_X86 && CONFIG_GPL
#ifdef MAP_ANONYMOUS
if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, MAX_MMX2_FILTER_CODE_SIZE);
if (c->chrMmx2FilterCode) munmap(c->chrMmx2FilterCode, MAX_MMX2_FILTER_CODE_SIZE);
if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize);
if (c->chrMmx2FilterCode) munmap(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize);
#elif HAVE_VIRTUALALLOC
if (c->lumMmx2FilterCode) VirtualFree(c->lumMmx2FilterCode, MAX_MMX2_FILTER_CODE_SIZE, MEM_RELEASE);
if (c->chrMmx2FilterCode) VirtualFree(c->chrMmx2FilterCode, MAX_MMX2_FILTER_CODE_SIZE, MEM_RELEASE);
if (c->lumMmx2FilterCode) VirtualFree(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, MEM_RELEASE);
if (c->chrMmx2FilterCode) VirtualFree(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, MEM_RELEASE);
#else
av_free(c->lumMmx2FilterCode);
av_free(c->chrMmx2FilterCode);

2
libswscale/swscale_internal.h
View File

@ -111,6 +111,8 @@ typedef struct SwsContext{
int vLumBufSize;
int vChrBufSize;
int lumMmx2FilterCodeSize;
int chrMmx2FilterCodeSize;
uint8_t *lumMmx2FilterCode;
uint8_t *chrMmx2FilterCode;
int32_t *lumMmx2FilterPos;