wmadec: require block_align to be set.

Avoids an infinite loop in the calling programs with decoder not
consuming any input and not returning output.

CC:libav-stable@libav.org
This commit is contained in:
Anton Khirnov 2013-03-06 09:58:00 +01:00
parent 3ba40ebb6c
commit ea1136baaf

View File

@ -72,6 +72,11 @@ static int wma_decode_init(AVCodecContext * avctx)
int i, flags2;
uint8_t *extradata;
if (!avctx->block_align) {
av_log(avctx, AV_LOG_ERROR, "block_align is not set\n");
return AVERROR(EINVAL);
}
s->avctx = avctx;
/* extract flag infos */