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diracdec: fix maximum quantization index checks 

Found by Coverity, fixes CID1363961 and CID1363962

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit is contained in:
Rostislav Pehlivanov 2016-07-13 23:40:06 +01:00
parent 9c0aba434e
commit b2b12b2d4a
1 changed files with 2 additions and 2 deletions
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4
libavcodec/diracdec.c
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@ -513,7 +513,7 @@ static inline void codeblock(DiracContext *s, SubBand *b,
b->quant = quant;
}
if (b->quant > DIRAC_MAX_QUANT_INDEX) {
if (b->quant > (DIRAC_MAX_QUANT_INDEX - 1)) {
av_log(s->avctx, AV_LOG_ERROR, "Unsupported quant %d\n", b->quant);
b->quant = 0;
return;
@ -703,7 +703,7 @@ static void decode_subband(DiracContext *s, GetBitContext *gb, int quant,
uint8_t *buf2 = b2 ? b2->ibuf + top * b2->stride: NULL;
int x, y;
if (quant > DIRAC_MAX_QUANT_INDEX) {
if (quant > (DIRAC_MAX_QUANT_INDEX - 1)) {
av_log(s->avctx, AV_LOG_ERROR, "Unsupported quant %d\n", quant);
return;
}