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dv: Add a guard to not overread the ppcm array 

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2013-08-05 22:15:24 +02:00
parent 85ac12587b
commit 7ee191cab0
1 changed files with 2 additions and 2 deletions
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4
libavformat/dv.c
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@ -108,7 +108,7 @@ static const int dv_audio_frequency[3] = {
* 3. Audio is always returned as 16bit linear samples: 12bit nonlinear samples
* are converted into 16bit linear ones.
*/
static int dv_extract_audio(uint8_t *frame, uint8_t *ppcm[4],
static int dv_extract_audio(uint8_t *frame, uint8_t **ppcm,
const DVprofile *sys)
{
int size, chan, i, j, d, of, smpls, freq, quant, half_ch;
@ -344,7 +344,7 @@ int avpriv_dv_produce_packet(DVDemuxContext *c, AVPacket *pkt,
uint8_t *buf, int buf_size)
{
int size, i;
uint8_t *ppcm[4] = { 0 };
uint8_t *ppcm[5] = { 0 };
if (buf_size < DV_PROFILE_BYTES ||
!(c->sys = avpriv_dv_frame_profile(c->sys, buf, buf_size)) ||