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libopenjpegenc: add NULL check for img before accessing it

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If opj_image_create fails to allocate an image it returns NULL, which
causes a segmentation fault at 'img->x0 = 0'.

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2015-06-01 00:51:30 +02:00
parent b0af4043b9
commit 1577526b47
1 changed files with 3 additions and 0 deletions
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libavcodec/libopenjpegenc.c
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@ -200,6 +200,9 @@ static opj_image_t *mj2_create_image(AVCodecContext *avctx, opj_cparameters_t *p
img = opj_image_create(numcomps, cmptparm, color_space);
if (!img)
return NULL;
// x0, y0 is the top left corner of the image
// x1, y1 is the width, height of the reference grid
img->x0 = 0;