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Move the v{Y,C}CoeffsBank vectors into the SwsContext, filling them in just

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once when the scaler is initialized, instead of building them and freeing
them over and over. This gives massive performance improvements.
patch by Alan Curry, pacman*at*TheWorld*dot*com

Originally committed as revision 17589 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Alan Curry 2006-02-11 14:16:10 +00:00 committed by Diego Biurrun
parent c9fa86df9d
commit d33d485e83
3 changed files with 28 additions and 26 deletions
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25
postproc/swscale.c
View File

@ -2110,6 +2110,25 @@ SwsContext *sws_getContext(int srcW, int srcH, int origSrcFormat, int dstW, int
c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,
(flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
srcFilter->chrV, dstFilter->chrV, c->param);
#ifdef HAVE_ALTIVEC
c->vYCoeffsBank = memalign (16, sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
c->vCCoeffsBank = memalign (16, sizeof (vector signed short)*c->vChrFilterSize*c->dstH);
for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
int j;
short *p = (short *)&c->vYCoeffsBank[i];
for (j=0;j<8;j++)
p[j] = c->vLumFilter[i];
}
for (i=0;i<c->vChrFilterSize*c->dstH;i++) {
int j;
short *p = (short *)&c->vCCoeffsBank[i];
for (j=0;j<8;j++)
p[j] = c->vChrFilter[i];
}
#endif
}
// Calculate Buffer Sizes so that they won't run out while handling these damn slices
@ -2644,6 +2663,12 @@ void sws_freeContext(SwsContext *c){
c->hLumFilter = NULL;
if(c->hChrFilter) free(c->hChrFilter);
c->hChrFilter = NULL;
#ifdef HAVE_ALTIVEC
if(c->vYCoeffsBank) free(c->vYCoeffsBank);
c->vYCoeffsBank = NULL;
if(c->vCCoeffsBank) free(c->vCCoeffsBank);
c->vCCoeffsBank = NULL;
#endif
if(c->vLumFilterPos) free(c->vLumFilterPos);
c->vLumFilterPos = NULL;

1
postproc/swscale_internal.h
View File

@ -154,6 +154,7 @@ typedef struct SwsContext{
vector signed short CGV;
vector signed short OY;
vector unsigned short CSHIFT;
vector signed short *vYCoeffsBank, *vCCoeffsBank;
#endif

28
postproc/yuv2rgb_altivec.c
View File

@ -774,8 +774,6 @@ altivec_yuv2packedX (SwsContext *c,
uint8_t *dest, int dstW, int dstY)
{
int i,j;
short tmp __attribute__((aligned (16)));
int16_t *p;
short *f;
vector signed short X,X0,X1,Y0,U0,V0,Y1,U1,V1,U,V;
vector signed short R0,G0,B0,R1,G1,B1;
@ -787,29 +785,10 @@ altivec_yuv2packedX (SwsContext *c,
vector unsigned short SCL = vec_splat((vector unsigned short)AVV(4),0);
unsigned long scratch[16] __attribute__ ((aligned (16)));
vector signed short *vYCoeffsBank, *vCCoeffsBank;
vector signed short *YCoeffs, *CCoeffs;
vYCoeffsBank = memalign (16, sizeof (vector signed short)*lumFilterSize*c->dstH);
vCCoeffsBank = memalign (16, sizeof (vector signed short)*chrFilterSize*c->dstH);
for (i=0;i<lumFilterSize*c->dstH;i++) {
tmp = c->vLumFilter[i];
p = &vYCoeffsBank[i];
for (j=0;j<8;j++)
p[j] = tmp;
}
for (i=0;i<chrFilterSize*c->dstH;i++) {
tmp = c->vChrFilter[i];
p = &vCCoeffsBank[i];
for (j=0;j<8;j++)
p[j] = tmp;
}
YCoeffs = vYCoeffsBank+dstY*lumFilterSize;
CCoeffs = vCCoeffsBank+dstY*chrFilterSize;
YCoeffs = c->vYCoeffsBank+dstY*lumFilterSize;
CCoeffs = c->vCCoeffsBank+dstY*chrFilterSize;
out = (vector unsigned char *)dest;
@ -962,7 +941,4 @@ altivec_yuv2packedX (SwsContext *c,
memcpy (&((uint32_t*)dest)[i], scratch, (dstW-i)/4);
}
if (vYCoeffsBank) free (vYCoeffsBank);
if (vCCoeffsBank) free (vCCoeffsBank);
}