/**
\fn create_edAudioExternal
*/
ADM_edAudioTrackExternal *create_edAudioExternal(const char *name)
{
#define EXTERNAL_PROBE_SIZE (1024*1024)
// Identify file type
uint8_t buffer[EXTERNAL_PROBE_SIZE];
FILE *f=ADM_fopen(name,"rb");
if(!f)
{
ADM_warning("Cannot open %s\n",name);
return NULL;
}
fread(buffer,1,EXTERNAL_PROBE_SIZE,f);
fclose(f);
WAVHeader hdr;
uint32_t offset;
if(false==ADM_identifyAudioStream(EXTERNAL_PROBE_SIZE,buffer,hdr,offset))
{
ADM_warning("Cannot identify external audio track\n");
return NULL;
}
// Try to create an access for the file...
switch(hdr.encoding)
{
case WAV_PCM:
case WAV_AC3:
case WAV_MP3:
break;
default:
ADM_warning("Unsupported external audio tracks \n");
return NULL;
break;
}
ADM_info("Found external audio track, encoding =%d offset=%d\n",(int)hdr.encoding,(int)offset);
// create access
ADM_audioAccessFile *access=new ADM_audioAccessFile(name,offset);
// create ADM_edAudioTrack
ADM_edAudioTrackExternal *external=new ADM_edAudioTrackExternal(name, &hdr,access);
if(!external->create())
{
delete external;
external=NULL;
ADM_warning("Failed to create external track from %s\n",name);
return NULL;
}
// done!
return external;
}
/**
\fn create_edAudioExternal
*/
ADM_edAudioTrackExternal *create_edAudioExternal(const char *name)
{
#define EXTERNAL_PROBE_SIZE (1024*1024)
// Identify file type
uint8_t buffer[EXTERNAL_PROBE_SIZE];
FILE *f=ADM_fopen(name,"rb");
if(!f)
{
ADM_warning("Cannot open %s\n",name);
return NULL;
}
fread(buffer,1,EXTERNAL_PROBE_SIZE,f);
fclose(f);
WAVHeader hdr;
uint32_t offset;
if(false==ADM_identifyAudioStream(EXTERNAL_PROBE_SIZE,buffer,hdr,offset))
{
ADM_warning("Cannot identify external audio track\n");
return NULL;
}
// Try to create an access for the file...
ADM_audioAccess *access=NULL;
switch(hdr.encoding)
{
case WAV_AAC:
access=new ADM_audioAccessFileAACADTS(name,offset);
break;
case WAV_PCM:
case WAV_AC3:
case WAV_MP2:
case WAV_MP3:
ADM_info("Found external audio track, encoding =%d offset=%d\n",(int)hdr.encoding,(int)offset);
// create access
access=new ADM_audioAccessFile(name,offset);
break;
default:
ADM_warning("Unsupported external audio tracks \n");
return NULL;
break;
}
if(!access)
{
ADM_warning("Cannot initialize access for audio track");
return NULL;
}
// create ADM_edAudioTrack
ADM_edAudioTrackExternal *external=new ADM_edAudioTrackExternal(name, &hdr,access);
uint32_t extraDataLen=0;
uint8_t *extraData=NULL;
access->getExtraData(&extraDataLen,&extraData);
ADM_info("Trying to create external audio track with %d bytes of extraData %d\n",extraDataLen);
if(!external->create(extraDataLen,extraData))
{
delete external;
external=NULL;
ADM_warning("Failed to create external track from %s\n",name);
return NULL;
}
// done!
return external;
}
