diff options
Diffstat (limited to 'libavcodec/cabac.c')
| -rw-r--r-- | libavcodec/cabac.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/cabac.c b/libavcodec/cabac.c index 8cc9333e09..f298336ea4 100644 --- a/libavcodec/cabac.c +++ b/libavcodec/cabac.c @@ -51,7 +51,7 @@ void ff_init_cabac_encoder(CABACContext *c, uint8_t *buf, int buf_size){ * * @param buf_size size of buf in bits */ -void ff_init_cabac_decoder(CABACContext *c, const uint8_t *buf, int buf_size){ +int ff_init_cabac_decoder(CABACContext *c, const uint8_t *buf, int buf_size){ c->bytestream_start= c->bytestream= buf; c->bytestream_end= buf + buf_size; @@ -64,6 +64,9 @@ void ff_init_cabac_decoder(CABACContext *c, const uint8_t *buf, int buf_size){ #endif c->low+= ((*c->bytestream++)<<2) + 2; c->range= 0x1FE; + if ((c->range<<(CABAC_BITS+1)) < c->low) + return AVERROR_INVALIDDATA; + return 0; } void ff_init_cabac_states(void) |