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wmaprodec: require block_align to be set.

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

CC:libav-stable@libav.org
(cherry picked from commit cacad1c058)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
This commit is contained in:
Anton Khirnov
2013-03-06 09:58:00 +01:00
committed by Reinhard Tartler
parent d48da91373
commit 20373a66ec
1 changed files with 5 additions and 0 deletions
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5
libavcodec/wmaprodec.c
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@@ -280,6 +280,11 @@ static av_cold int decode_init(AVCodecContext *avctx)
int log2_max_num_subframes; int log2_max_num_subframes;
int num_possible_block_sizes; 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; s->avctx = avctx;
ff_dsputil_init(&s->dsp, avctx); ff_dsputil_init(&s->dsp, avctx);
avpriv_float_dsp_init(&s->fdsp, avctx->flags & CODEC_FLAG_BITEXACT); avpriv_float_dsp_init(&s->fdsp, avctx->flags & CODEC_FLAG_BITEXACT);