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avcodec/ffv1: Initialize vlc_state on allocation

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This ensures that they are always set to valid values
Fixes Ticket4939

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a878dfa4f5)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-10-17 02:13:42 +02:00
parent 06c87da410
commit c6cb24ffbf
1 changed files with 10 additions and 5 deletions
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15
libavcodec/ffv1.c
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@ -66,7 +66,7 @@ av_cold int ffv1_common_init(AVCodecContext *avctx)
av_cold int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
{
int j;
int j, i;
fs->plane_count = f->plane_count;
fs->transparency = f->transparency;
@ -80,10 +80,15 @@ av_cold int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
if (!p->state)
return AVERROR(ENOMEM);
} else {
if (!p->vlc_state)
p->vlc_state = av_malloc_array(p->context_count, sizeof(VlcState));
if (!p->vlc_state)
return AVERROR(ENOMEM);
if (!p->vlc_state) {
p->vlc_state = av_mallocz_array(p->context_count, sizeof(VlcState));
if (!p->vlc_state)
return AVERROR(ENOMEM);
for (i = 0; i < p->context_count; i++) {
p->vlc_state[i].error_sum = 4;
p->vlc_state[i].count = 1;
}
}
}
}