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tries to sync to ADTS/ADIF header before initializing the decoder; implement SYNC

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@14565 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nicodvb 2005-01-21 20:50:09 +00:00
parent 178ccc16ce
commit a37ebc9903
1 changed files with 51 additions and 3 deletions
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54
libmpcodecs/ad_faad.c
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@ -47,11 +47,30 @@ static int preinit(sh_audio_t *sh)
return 1;
}
static int aac_probe(unsigned char *buffer, int len)
{
int i = 0, pos = 0;
mp_msg(MSGT_DECAUDIO,MSGL_V, "\nAAC_PROBE: %d bytes\n", len);
while(i <= len-4) {
if(
((buffer[i] == 0xff) && ((buffer[i+1] & 0xfe) == 0xf8)) ||
(buffer[i] == 'A' && buffer[i+1] == 'D' && buffer[i+2] == 'I' && buffer[i+3] == 'F')
) {
pos = i;
break;
}
mp_msg(MSGT_DECAUDIO,MSGL_V, "AUDIO PAYLOAD: %x %x %x %x\n", buffer[i], buffer[i+1], buffer[i+2], buffer[i+3]);
i++;
}
mp_msg(MSGT_DECAUDIO,MSGL_V, "\nAAC_PROBE: ret %d\n", pos);
return pos;
}
static int init(sh_audio_t *sh)
{
unsigned long faac_samplerate;
unsigned char faac_channels;
int faac_init;
int faac_init, pos = 0;
faac_hdec = faacDecOpen();
// If we don't get the ES descriptor, try manual config
@ -92,6 +111,15 @@ static int init(sh_audio_t *sh)
#endif
sh->a_in_buffer_len = demux_read_data(sh->ds, sh->a_in_buffer, sh->a_in_buffer_size);
pos = aac_probe(sh->a_in_buffer, sh->a_in_buffer_len);
if(pos) {
sh->a_in_buffer_len -= pos;
memmove(sh->a_in_buffer, &(sh->a_in_buffer[pos]), sh->a_in_buffer_len);
sh->a_in_buffer_len +=
demux_read_data(sh->ds,&(sh->a_in_buffer[sh->a_in_buffer_len]),
sh->a_in_buffer_size - sh->a_in_buffer_len);
pos = 0;
}
/* init the codec */
#if (FAADVERSION <= 11)
@ -140,13 +168,33 @@ static void uninit(sh_audio_t *sh)
faacDecClose(faac_hdec);
}
static int aac_sync(sh_audio_t *sh)
{
int pos = 0;
if(!sh->codecdata_len) {
if(sh->a_in_buffer_len < sh->a_in_buffer_size){
sh->a_in_buffer_len +=
demux_read_data(sh->ds,&sh->a_in_buffer[sh->a_in_buffer_len],
sh->a_in_buffer_size - sh->a_in_buffer_len);
}
pos = aac_probe(sh->a_in_buffer, sh->a_in_buffer_len);
if(pos) {
sh->a_in_buffer_len -= pos;
memmove(sh->a_in_buffer, &(sh->a_in_buffer[pos]), sh->a_in_buffer_len);
mp_msg(MSGT_DECAUDIO,MSGL_V, "\nAAC SYNC AFTER %d bytes\n", pos);
}
}
return pos;
}
static int control(sh_audio_t *sh,int cmd,void* arg, ...)
{
switch(cmd)
{
#if 0
case ADCTRL_RESYNC_STREAM:
return CONTROL_TRUE;
aac_sync(sh);
return CONTROL_TRUE;
#if 0
case ADCTRL_SKIP_FRAME:
return CONTROL_TRUE;
#endif