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libopenjpegdec: check existence of image component data 

libopenjpeg can return images with components without data.

This fixes segmentation faults.

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2015-05-30 16:18:48 +02:00
parent 161d0ac721
commit 3ef5702926
1 changed files with 9 additions and 0 deletions
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9
libavcodec/libopenjpegdec.c
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@ -358,6 +358,15 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
goto done;
}
for (i = 0; i < image->numcomps; i++) {
if (!image->comps[i].data) {
av_log(avctx, AV_LOG_ERROR,
"Image component %d contains no data.\n", i);
ret = AVERROR_INVALIDDATA;
goto done;
}
}
desc = av_pix_fmt_desc_get(avctx->pix_fmt);
pixel_size = desc->comp[0].step_minus1 + 1;
ispacked = libopenjpeg_ispacked(avctx->pix_fmt);