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swscale: factor should_dither out 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-06-05 04:24:45 +02:00
parent 46eb300d01
commit ec4207c46a
1 changed files with 3 additions and 2 deletions
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5
libswscale/swscale.c
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@ -1730,6 +1730,7 @@ static int swScale(SwsContext *c, const uint8_t* src[],
const int chrSrcSliceH= -((-srcSliceH) >> c->chrSrcVSubSample);
int lastDstY;
uint32_t *pal=c->pal_yuv;
int should_dither= isNBPS(c->srcFormat) || is16BPS(c->srcFormat);
/* vars which will change and which we need to store back in the context */
int dstY= c->dstY;
@ -1787,8 +1788,8 @@ static int swScale(SwsContext *c, const uint8_t* src[],
unsigned char *uDest=dst[1]+dstStride[1]*chrDstY;
unsigned char *vDest=dst[2]+dstStride[2]*chrDstY;
unsigned char *aDest=(CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3]+dstStride[3]*dstY : NULL;
const uint8_t *lumDither= isNBPS(c->srcFormat) || is16BPS(c->srcFormat) ? dithers[7][dstY &7] : flat64;
const uint8_t *chrDither= isNBPS(c->srcFormat) || is16BPS(c->srcFormat) ? dithers[7][chrDstY&7] : flat64;
const uint8_t *lumDither= should_dither ? dithers[7][dstY &7] : flat64;
const uint8_t *chrDither= should_dither ? dithers[7][chrDstY&7] : flat64;
const int firstLumSrcY= vLumFilterPos[dstY]; //First line needed as input
const int firstLumSrcY2= vLumFilterPos[FFMIN(dstY | ((1<<c->chrDstVSubSample) - 1), dstH-1)];