highperfocused/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dca: fix signed overflow in shift

Browse Source 
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 559c244d42be7a02c23976216b47fd63b80d6c7f)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Mans Rullgard 2011-10-08 13:49:42 +01:00 committed by Michael Niedermayer
parent c2c83dcb32
commit 37ce6ba425
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
libavcodec/dca.c
View File

@ -905,7 +905,8 @@ static void qmf_32_subbands(DCAContext * s, int chans,
for (subindex = 0; subindex < 8; subindex++) {
/* Load in one sample from each subband and clear inactive subbands */
for (i = 0; i < sb_act; i++){
uint32_t v = AV_RN32A(&samples_in[i][subindex]) ^ ((i-1)&2)<<30;
unsigned sign = (i - 1) & 2;
uint32_t v = AV_RN32A(&samples_in[i][subindex]) ^ sign << 30;
AV_WN32A(&s->raXin[i], v);
}