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indeo4: print an error message if ref_mb is needed but unavailable

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-07-14 15:18:03 +02:00
parent 76d0a6656b
commit febbddbdd5
1 changed files with 3 additions and 1 deletions
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4
libavcodec/indeo4.c
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@ -528,8 +528,10 @@ static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band,
} else {
if (band->inherit_mv) {
/* copy mb_type from corresponding reference mb */
if (!ref_mb)
if (!ref_mb) {
av_log(avctx, AV_LOG_ERROR, "ref_mb unavailable\n");
return AVERROR_INVALIDDATA;
}
mb->type = ref_mb->type;
} else if (ctx->frame_type == FRAMETYPE_INTRA ||
ctx->frame_type == FRAMETYPE_INTRA1) {