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wavpack: Check error codes rather than working around error conditions.

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(cherry picked from commit dba2b63a98bdcac7bda1a8a2c48950518c075e17)

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Alex Converse 2011-09-08 11:02:43 -07:00 committed by Reinhard Tartler
parent 4b84e995ad
commit 5d4c065476
1 changed files with 10 additions and 3 deletions
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13
libavcodec/wavpack.c
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@ -1119,6 +1119,10 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
samplecount = wv_unpack_stereo(s, &s->gb, samples, AV_SAMPLE_FMT_S32);
else
samplecount = wv_unpack_stereo(s, &s->gb, samples, AV_SAMPLE_FMT_FLT);
if (samplecount < 0)
return -1;
samplecount >>= 1;
}else{
const int channel_stride = avctx->channels;
@ -1130,11 +1134,14 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
else
samplecount = wv_unpack_mono(s, &s->gb, samples, AV_SAMPLE_FMT_FLT);
if (samplecount < 0)
return -1;
if(s->stereo && avctx->sample_fmt == AV_SAMPLE_FMT_S16){
int16_t *dst = (int16_t*)samples + 1;
int16_t *src = (int16_t*)samples;
int cnt = samplecount;
while(cnt-- > 0){
while(cnt--){
*dst = *src;
src += channel_stride;
dst += channel_stride;
@ -1143,7 +1150,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
int32_t *dst = (int32_t*)samples + 1;
int32_t *src = (int32_t*)samples;
int cnt = samplecount;
while(cnt-- > 0){
while(cnt--){
*dst = *src;
src += channel_stride;
dst += channel_stride;
@ -1152,7 +1159,7 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
float *dst = (float*)samples + 1;
float *src = (float*)samples;
int cnt = samplecount;
while(cnt-- > 0){
while(cnt--){
*dst = *src;
src += channel_stride;
dst += channel_stride;