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vp8: improve memory allocation checks

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Check memory earlier, check one more allocation and clean up on error.

CC: libav-stable@libav.org
Bug-Id: CID 1257773
This commit is contained in:
Vittorio Giovara 2014-12-17 16:02:08 +01:00
parent 54bc15d5eb
commit 014b6b416f
1 changed files with 10 additions and 4 deletions
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14
libavcodec/vp8.c
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@ -168,19 +168,25 @@ int update_dimensions(VP8Context *s, int width, int height, int is_vp7)
s->top_border = av_mallocz((s->mb_width + 1) * sizeof(*s->top_border));
s->thread_data = av_mallocz(MAX_THREADS * sizeof(VP8ThreadData));
if (!s->macroblocks_base || !s->top_nnz || !s->top_border ||
!s->thread_data || (!s->intra4x4_pred_mode_top && !s->mb_layout)) {
free_buffers(s);
return AVERROR(ENOMEM);
}
for (i = 0; i < MAX_THREADS; i++) {
s->thread_data[i].filter_strength =
av_mallocz(s->mb_width * sizeof(*s->thread_data[0].filter_strength));
if (!s->thread_data[i].filter_strength) {
free_buffers(s);
return AVERROR(ENOMEM);
}
#if HAVE_THREADS
pthread_mutex_init(&s->thread_data[i].lock, NULL);
pthread_cond_init(&s->thread_data[i].cond, NULL);
#endif
}
if (!s->macroblocks_base || !s->top_nnz || !s->top_border ||
(!s->intra4x4_pred_mode_top && !s->mb_layout))
return AVERROR(ENOMEM);
s->macroblocks = s->macroblocks_base + 1;
return 0;