mirror of https://git.ffmpeg.org/ffmpeg.git
indeo: Check allocated tile size in ff_ivi_process_empty_tile()
This prevents writing into a too small array if some parameters changed without the tile being reallocated. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -486,6 +486,12 @@ void ff_ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
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void (*mc_no_delta_func)(int16_t *buf, const int16_t *ref_buf, uint32_t pitch,
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int mc_type);
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if( tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size) ){
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av_log(avctx, AV_LOG_ERROR, "allocated tile size %d mismatches parameters %d in ff_ivi_process_empty_tile()\n",
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tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size));
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return;
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}
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offs = tile->ypos * band->pitch + tile->xpos;
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mb = tile->mbs;
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ref_mb = tile->ref_mbs;
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