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Check length of input buffer for msadpcm

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27260 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2008-07-11 19:27:35 +00:00
parent ffc22175d3
commit 792dc55d19
1 changed files with 7 additions and 1 deletions
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8
libmpcodecs/ad_msadpcm.c
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@ -107,6 +107,10 @@ static int ms_adpcm_decode_block(unsigned short *output, unsigned char *input,
int snibble; // signed nibble
int predictor;
if (channels != 1) channels = 2;
if (block_size < 7 * channels)
return -1;
// fetch the header information, in stereo if both channels are present
if (input[stream_ptr] > 6)
mp_msg(MSGT_DECAUDIO, MSGL_WARN,
@ -197,12 +201,14 @@ static int ms_adpcm_decode_block(unsigned short *output, unsigned char *input,
static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
{
int res;
if (demux_read_data(sh_audio->ds, sh_audio->a_in_buffer,
sh_audio->ds->ss_mul) !=
sh_audio->ds->ss_mul)
return -1; /* EOF */
return 2 * ms_adpcm_decode_block(
res = ms_adpcm_decode_block(
(unsigned short*)buf, sh_audio->a_in_buffer,
sh_audio->wf->nChannels, sh_audio->wf->nBlockAlign);
return res < 0 ? res : 2 * res;
}