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swscale: fix clipping of 9/10bit YUV420P.

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This commit is contained in:
Ronald S. Bultje 2011-05-13 16:45:04 -04:00
parent 1550f45a89
commit c3d68ec9c5
1 changed files with 18 additions and 17 deletions
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35
libswscale/swscale.c
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@ -218,6 +218,20 @@ static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, co
int i;
int shift = 11 + 16 - output_bits;
#define output_pixel(pos, val) \
if (big_endian) { \
if (output_bits == 16) { \
AV_WB16(pos, av_clip_uint16(val >> shift)); \
} else { \
AV_WB16(pos, av_clip_uintp2(val >> shift, output_bits)); \
} \
} else { \
if (output_bits == 16) { \
AV_WL16(pos, av_clip_uint16(val >> shift)); \
} else { \
AV_WL16(pos, av_clip_uintp2(val >> shift, output_bits)); \
} \
}
for (i = 0; i < dstW; i++) {
int val = 1 << 10;
int j;
@ -225,11 +239,7 @@ static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, co
for (j = 0; j < lumFilterSize; j++)
val += lumSrc[j][i] * lumFilter[j];
if (big_endian) {
AV_WB16(&dest[i], av_clip_uint16(val >> shift));
} else {
AV_WL16(&dest[i], av_clip_uint16(val >> shift));
}
output_pixel(&dest[i], val);
}
if (uDest) {
@ -243,13 +253,8 @@ static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, co
v += chrSrc[j][i + VOFW] * chrFilter[j];
}
if (big_endian) {
AV_WB16(&uDest[i], av_clip_uint16(u >> shift));
AV_WB16(&vDest[i], av_clip_uint16(v >> shift));
} else {
AV_WL16(&uDest[i], av_clip_uint16(u >> shift));
AV_WL16(&vDest[i], av_clip_uint16(v >> shift));
}
output_pixel(&uDest[i], u);
output_pixel(&vDest[i], v);
}
}
@ -261,11 +266,7 @@ static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, co
for (j = 0; j < lumFilterSize; j++)
val += alpSrc[j][i] * lumFilter[j];
if (big_endian) {
AV_WB16(&aDest[i], av_clip_uint16(val >> shift));
} else {
AV_WL16(&aDest[i], av_clip_uint16(val >> shift));
}
output_pixel(&aDest[i], val);
}
}
}