Commit a70c27e8 authored by Kostya Shishkov's avatar Kostya Shishkov
Browse files

Fix overflows in bicubic interpolation.

Originally committed as revision 5868 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 5b01f9ce
......@@ -314,7 +314,7 @@ static void vc1_inv_trans_4x4_c(DCTELEM block[64], int n)
/** Filter used to interpolate fractional pel values
*/
static always_inline uint8_t vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
static always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
{
switch(mode){
case 0: //no shift
......@@ -343,7 +343,7 @@ static void vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int mode,
tptr = tmp;
for(j = 0; j < 11; j++) {
for(i = 0; i < 8; i++)
tptr[i] = vc1_mspel_filter(src + i, 1, m, r);
tptr[i] = clip_uint8(vc1_mspel_filter(src + i, 1, m, r));
src += stride;
tptr += 8;
}
......@@ -353,7 +353,7 @@ static void vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int mode,
tptr = tmp + 8;
for(j = 0; j < 8; j++) {
for(i = 0; i < 8; i++)
dst[i] = vc1_mspel_filter(tptr + i, 8, m, r);
dst[i] = clip_uint8(vc1_mspel_filter(tptr + i, 8, m, r));
dst += stride;
tptr += 8;
}
......
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