int i;
uint16_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
*aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
- int shift = 11 + 16 - output_bits - 1;
+ int shift = 11 + 16 - output_bits;
#define output_pixel(pos, val) \
if (big_endian) { \
AV_WL16(pos, av_clip_uintp2(val >> shift, output_bits)); \
}
for (i = 0; i < dstW; i++) {
- int val = 1 << (26-output_bits - 1);
+ int val = 1 << (26-output_bits);
int j;
for (j = 0; j < lumFilterSize; j++)
- val += (lumSrc[j][i] * lumFilter[j]) >> 1;
+ val += lumSrc[j][i] * lumFilter[j];
output_pixel(&yDest[i], val);
}
if (uDest) {
for (i = 0; i < chrDstW; i++) {
- int u = 1 << (26-output_bits - 1);
- int v = 1 << (26-output_bits - 1);
+ int u = 1 << (26-output_bits);
+ int v = 1 << (26-output_bits);
int j;
for (j = 0; j < chrFilterSize; j++) {
- u += (chrUSrc[j][i] * chrFilter[j]) >> 1;
- v += (chrVSrc[j][i] * chrFilter[j]) >> 1;
+ u += chrUSrc[j][i] * chrFilter[j];
+ v += chrVSrc[j][i] * chrFilter[j];
}
output_pixel(&uDest[i], u);
if (CONFIG_SWSCALE_ALPHA && aDest) {
for (i = 0; i < dstW; i++) {
- int val = 1 << (26-output_bits - 1);
+ int val = 1 << (26-output_bits);
int j;
for (j = 0; j < lumFilterSize; j++)
- val += (alpSrc[j][i] * lumFilter[j]) >> 1;
+ val += alpSrc[j][i] * lumFilter[j];
output_pixel(&aDest[i], val);
}