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avcodec/snow: Initialize spatial_decomposition_count to a valid value 

Fixes undefined behavior
Fixes: signal_sigsegv_24169e6_3445_cov_3778346427_snow_chroma_bug.avi

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-02-25 21:18:13 +01:00
parent 6d66e1a113
commit dd369c9adb
1 changed files with 1 additions and 0 deletions
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libavcodec/snow.c
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@ -434,6 +434,7 @@ av_cold int ff_snow_common_init(AVCodecContext *avctx){
s->avctx= avctx;
s->max_ref_frames=1; //just make sure it's not an invalid value in case of no initial keyframe
s->spatial_decomposition_count = 1;
ff_me_cmp_init(&s->mecc, avctx);
ff_hpeldsp_init(&s->hdsp, avctx->flags);