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indeo4: Check the block size if reusing the band configuration

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Sample-Id: 00000287-google

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2013-10-11 10:51:53 +02:00
parent fd2384f02b
commit 0cb83c5638
1 changed files with 8 additions and 0 deletions
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8
libavcodec/indeo4.c
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@ -293,6 +293,7 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
band->is_empty = get_bits1(&ctx->gb);
if (!band->is_empty) {
int old_blk_size = band->blk_size;
/* skip header size
* If header size is not given, header size is 4 bytes. */
if (get_bits1(&ctx->gb))
@ -378,6 +379,13 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
band->quant_mat);
return AVERROR_INVALIDDATA;
}
} else {
if (old_blk_size != band->blk_size) {
av_log(avctx, AV_LOG_ERROR,
"The band block size does not match the configuration "
"inherited\n");
return AVERROR_INVALIDDATA;
}
}
/* decode block huffman codebook */