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eacmv: Free frames on resolution changes

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Fixes out of array reads

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-01-25 00:41:16 +01:00
parent 286930d302
commit e9d443cf08
1 changed files with 6 additions and 1 deletions
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7
libavcodec/eacmv.c
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@ -132,8 +132,13 @@ static void cmv_process_header(CmvContext *s, const uint8_t *buf, const uint8_t
s->width = AV_RL16(&buf[4]);
s->height = AV_RL16(&buf[6]);
if (s->avctx->width!=s->width || s->avctx->height!=s->height)
if (s->avctx->width!=s->width || s->avctx->height!=s->height) {
avcodec_set_dimensions(s->avctx, s->width, s->height);
if (s->frame.data[0])
s->avctx->release_buffer(s->avctx, &s->frame);
if (s->last_frame.data[0])
s->avctx->release_buffer(s->avctx, &s->last_frame);
}
s->avctx->time_base.num = 1;
s->avctx->time_base.den = AV_RL16(&buf[10]);