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Code Issues Releases Activity

Fix accurate rounding mode on x86_64.

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Fixes issue222.

Originally committed as revision 27545 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Michael Niedermayer 2008-09-07 21:06:21 +00:00
parent 3943bd0901
commit 1625216eaa
3 changed files with 34 additions and 21 deletions
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2
libswscale/swscale.c
View File

@ -1293,7 +1293,7 @@ static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outF
filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));
assert(filterSize > 0);
filter= av_malloc(filterSize*dstW*sizeof(double));
if (filterSize >= MAX_FILTER_SIZE || !filter)
if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)
goto error;
*outFilterSize= filterSize;

12
libswscale/swscale_internal.h
View File

@ -29,6 +29,8 @@
#include "libavutil/avutil.h"
#define STR(s) AV_TOSTRING(s) //AV_STINGIFY is too long
#define MAX_FILTER_SIZE 256
#define VOFW 2048
@ -40,6 +42,16 @@
#define ALT32_CORR 1
#endif
#ifdef ARCH_X86_64
# define APCK_PTR2 8
# define APCK_COEF 16
# define APCK_SIZE 24
#else
# define APCK_PTR2 4
# define APCK_COEF 8
# define APCK_SIZE 16
#endif
typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]);

41
libswscale/swscale_template.c
View File

@ -119,19 +119,19 @@
"1: \n\t"\
"movq " x "(%%"REG_S", %%"REG_a", 2), %%mm0 \n\t" /* srcData */\
"movq 8+" x "(%%"REG_S", %%"REG_a", 2), %%mm2 \n\t" /* srcData */\
"mov 4(%%"REG_d"), %%"REG_S" \n\t"\
"mov "STR(APCK_PTR2)"(%%"REG_d"), %%"REG_S" \n\t"\
"movq " x "(%%"REG_S", %%"REG_a", 2), %%mm1 \n\t" /* srcData */\
"movq %%mm0, %%mm3 \n\t"\
"punpcklwd %%mm1, %%mm0 \n\t"\
"punpckhwd %%mm1, %%mm3 \n\t"\
"movq 8(%%"REG_d"), %%mm1 \n\t" /* filterCoeff */\
"movq "STR(APCK_COEF)"(%%"REG_d"), %%mm1 \n\t" /* filterCoeff */\
"pmaddwd %%mm1, %%mm0 \n\t"\
"pmaddwd %%mm1, %%mm3 \n\t"\
"paddd %%mm0, %%mm4 \n\t"\
"paddd %%mm3, %%mm5 \n\t"\
"movq 8+" x "(%%"REG_S", %%"REG_a", 2), %%mm3 \n\t" /* srcData */\
"mov 16(%%"REG_d"), %%"REG_S" \n\t"\
"add $16, %%"REG_d" \n\t"\
"mov "STR(APCK_SIZE)"(%%"REG_d"), %%"REG_S" \n\t"\
"add $"STR(APCK_SIZE)", %%"REG_d" \n\t"\
"test %%"REG_S", %%"REG_S" \n\t"\
"movq %%mm2, %%mm0 \n\t"\
"punpcklwd %%mm3, %%mm2 \n\t"\
@ -271,19 +271,19 @@
"2: \n\t"\
"movq (%%"REG_S", %%"REG_a"), %%mm0 \n\t" /* UsrcData */\
"movq "AV_STRINGIFY(VOF)"(%%"REG_S", %%"REG_a"), %%mm2 \n\t" /* VsrcData */\
"mov 4(%%"REG_d"), %%"REG_S" \n\t"\
"mov "STR(APCK_PTR2)"(%%"REG_d"), %%"REG_S" \n\t"\
"movq (%%"REG_S", %%"REG_a"), %%mm1 \n\t" /* UsrcData */\
"movq %%mm0, %%mm3 \n\t"\
"punpcklwd %%mm1, %%mm0 \n\t"\
"punpckhwd %%mm1, %%mm3 \n\t"\
"movq 8(%%"REG_d"), %%mm1 \n\t" /* filterCoeff */\
"movq "STR(APCK_COEF)"(%%"REG_d"),%%mm1 \n\t" /* filterCoeff */\
"pmaddwd %%mm1, %%mm0 \n\t"\
"pmaddwd %%mm1, %%mm3 \n\t"\
"paddd %%mm0, %%mm4 \n\t"\
"paddd %%mm3, %%mm5 \n\t"\
"movq "AV_STRINGIFY(VOF)"(%%"REG_S", %%"REG_a"), %%mm3 \n\t" /* VsrcData */\
"mov 16(%%"REG_d"), %%"REG_S" \n\t"\
"add $16, %%"REG_d" \n\t"\
"mov "STR(APCK_SIZE)"(%%"REG_d"), %%"REG_S" \n\t"\
"add $"STR(APCK_SIZE)", %%"REG_d" \n\t"\
"test %%"REG_S", %%"REG_S" \n\t"\
"movq %%mm2, %%mm0 \n\t"\
"punpcklwd %%mm3, %%mm2 \n\t"\
@ -315,19 +315,19 @@
"2: \n\t"\
"movq (%%"REG_S", %%"REG_a", 2), %%mm0 \n\t" /* Y1srcData */\
"movq 8(%%"REG_S", %%"REG_a", 2), %%mm2 \n\t" /* Y2srcData */\
"mov 4(%%"REG_d"), %%"REG_S" \n\t"\
"mov "STR(APCK_PTR2)"(%%"REG_d"), %%"REG_S" \n\t"\
"movq (%%"REG_S", %%"REG_a", 2), %%mm4 \n\t" /* Y1srcData */\
"movq %%mm0, %%mm3 \n\t"\
"punpcklwd %%mm4, %%mm0 \n\t"\
"punpckhwd %%mm4, %%mm3 \n\t"\
"movq 8(%%"REG_d"), %%mm4 \n\t" /* filterCoeff */\
"movq "STR(APCK_COEF)"(%%"REG_d"), %%mm4 \n\t" /* filterCoeff */\
"pmaddwd %%mm4, %%mm0 \n\t"\
"pmaddwd %%mm4, %%mm3 \n\t"\
"paddd %%mm0, %%mm1 \n\t"\
"paddd %%mm3, %%mm5 \n\t"\
"movq 8(%%"REG_S", %%"REG_a", 2), %%mm3 \n\t" /* Y2srcData */\
"mov 16(%%"REG_d"), %%"REG_S" \n\t"\
"add $16, %%"REG_d" \n\t"\
"mov "STR(APCK_SIZE)"(%%"REG_d"), %%"REG_S" \n\t"\
"add $"STR(APCK_SIZE)", %%"REG_d" \n\t"\
"test %%"REG_S", %%"REG_S" \n\t"\
"movq %%mm2, %%mm0 \n\t"\
"punpcklwd %%mm3, %%mm2 \n\t"\
@ -3180,18 +3180,19 @@ static int RENAME(swScale)(SwsContext *c, uint8_t* src[], int srcStride[], int s
#ifdef HAVE_MMX
int i;
if (flags & SWS_ACCURATE_RND){
int s= APCK_SIZE / 8;
for (i=0; i<vLumFilterSize; i+=2){
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 ]
*(void**)&lumMmxFilter[s*i ]= lumSrcPtr[i ];
*(void**)&lumMmxFilter[s*i+APCK_PTR2/4 ]= lumSrcPtr[i+(vLumFilterSize>1)];
lumMmxFilter[s*i+APCK_COEF/4 ]=
lumMmxFilter[s*i+APCK_COEF/4+1]= vLumFilter[dstY*vLumFilterSize + i ]
+ (vLumFilterSize>1 ? vLumFilter[dstY*vLumFilterSize + i + 1]<<16 : 0);
}
for (i=0; i<vChrFilterSize; i+=2){
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 ]
*(void**)&chrMmxFilter[s*i ]= chrSrcPtr[i ];
*(void**)&chrMmxFilter[s*i+APCK_PTR2/4 ]= chrSrcPtr[i+(vChrFilterSize>1)];
chrMmxFilter[s*i+APCK_COEF/4 ]=
chrMmxFilter[s*i+APCK_COEF/4+1]= vChrFilter[chrDstY*vChrFilterSize + i ]
+ (vChrFilterSize>1 ? vChrFilter[chrDstY*vChrFilterSize + i + 1]<<16 : 0);
}
}else{