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Make sure that all memory allocations succeed.

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Based on 28_theora_malloc_checks.patch from the Google Chrome team.

Originally committed as revision 20008 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson 2009-09-24 06:33:16 +00:00
parent 22da339f5d
commit 0efbd068e7
1 changed files with 12 additions and 0 deletions
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12
libavcodec/vp3.c
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@ -42,6 +42,8 @@
#define FRAGMENT_PIXELS 8
static av_cold int vp3_decode_end(AVCodecContext *avctx);
typedef struct Coeff {
struct Coeff *next;
DCTELEM coeff;
@ -1755,6 +1757,11 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
s->coeffs = av_malloc(s->fragment_count * sizeof(Coeff) * 65);
s->coded_fragment_list = av_malloc(s->fragment_count * sizeof(int));
s->pixel_addresses_initialized = 0;
if (!s->superblock_coding || !s->all_fragments || !s->coeff_counts ||
!s->coeffs || !s->coded_fragment_list) {
vp3_decode_end(avctx);
return -1;
}
if (!s->theora_tables)
{
@ -1860,6 +1867,11 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
s->superblock_macroblocks = av_malloc(s->superblock_count * 4 * sizeof(int));
s->macroblock_fragments = av_malloc(s->macroblock_count * 6 * sizeof(int));
s->macroblock_coding = av_malloc(s->macroblock_count + 1);
if (!s->superblock_fragments || !s->superblock_macroblocks ||
!s->macroblock_fragments || !s->macroblock_coding) {
vp3_decode_end(avctx);
return -1;
}
init_block_mapping(s);
for (i = 0; i < 3; i++) {