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wmaprodec: 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 ea1136baaf
commit cacad1c058
1 changed files with 5 additions and 0 deletions
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5
libavcodec/wmaprodec.c
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@ -277,6 +277,11 @@ static av_cold int decode_init(AVCodecContext *avctx)
int log2_max_num_subframes;
int num_possible_block_sizes;
if (!avctx->block_align) {
av_log(avctx, AV_LOG_ERROR, "block_align is not set\n");
return AVERROR(EINVAL);
}
s->avctx = avctx;
avpriv_float_dsp_init(&s->fdsp, avctx->flags & CODEC_FLAG_BITEXACT);