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 (cherry picked from commit ea1136baafb1fe271cb56c3f4d7bff0267e3c70f) Signed-off-by: Reinhard Tartler <siretart@tauware.de> (cherry picked from commit c1f479e8df24284237c80ad959619fc85e29a26d) Signed-off-by: Reinhard Tartler <siretart@tauware.de>
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@ -85,6 +85,11 @@ static int wma_decode_init(AVCodecContext * avctx)
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int i, flags2;
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uint8_t *extradata;
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if (!avctx->block_align) {
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av_log(avctx, AV_LOG_ERROR, "block_align is not set\n");
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return AVERROR(EINVAL);
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}
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s->avctx = avctx;
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/* extract flag infos */
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