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avcodec/diracdec: Move buf[] read after size check

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer
2015-05-05 22:01:58 +02:00
parent 984f50deb2
commit 5a455dd011
1 changed files with 3 additions and 1 deletions
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4
libavcodec/diracdec.c
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@@ -1815,12 +1815,14 @@ static int dirac_decode_data_unit(AVCodecContext *avctx, const uint8_t *buf, int
{ {
DiracContext *s = avctx->priv_data; DiracContext *s = avctx->priv_data;
DiracFrame *pic = NULL; DiracFrame *pic = NULL;
int ret, i, parse_code = buf[4]; int ret, i, parse_code;
unsigned tmp; unsigned tmp;
if (size < DATA_UNIT_HEADER_SIZE) if (size < DATA_UNIT_HEADER_SIZE)
return -1; return -1;
parse_code = buf[4];
init_get_bits(&s->gb, &buf[13], 8*(size - DATA_UNIT_HEADER_SIZE)); init_get_bits(&s->gb, &buf[13], 8*(size - DATA_UNIT_HEADER_SIZE));
if (parse_code == pc_seq_header) { if (parse_code == pc_seq_header) {