int ZyxAudioStop(void)
{
int ret = -1;
if (pzma)
{
ZyxTrace("ZyxAudioStop");
if (ZyxGetAudioState() == AAC_STATE_STOP)
{
pzma = NULL;
return ret;
}
Media_Stop();
//ret = mdi_audio_stop_all();
MCI_AudioStopBuffer();
ZyxTrace("zyx close ret=%d",ret);
//if (ret == MEDIA_SUCCESS) ret = 0;
pzma->stat = AAC_STATE_STOP;
pzma = NULL;
}
return ret;
}
kal_bool BT_PcmLoopbackTest(void)
{
kal_int16 i, count = 0;
kal_uint16 *buf;
kal_uint32 len = 0, acmLen = 0;
kal_int32 magDB = 0;
TD_Handle hdl;
kal_uint16 *rb_base;
AM_BluetoothOn(2);//2:open earphone mode, 1: open cordless mode
AM_FlushQFunction();
kal_prompt_trace(MOD_L1SP, "after set,DP_VOL_OUT_PCM= %d",*DP_VOL_OUT_PCM);
/*initialize*/
rb_base = (kal_uint16 *)get_ctrl_buffer(BTLB_BUF_LEN << 1);
Media_SetBuffer( rb_base, BTLB_BUF_LEN );
TD_Init( &hdl, TARGET_TONE, BLOCK_SIZE);
#ifdef BTLB_DEBUG
pcmDebugCnt = 0;
pcmDebugPtr = btlbPcmDebugBuf;
#endif
/*start tone_play and record*/
KT_Play(TARGET_TONE, 0, 0); /*play single tone , continuous play*/
Media_Record(MEDIA_FORMAT_PCM_8K, BTLB_Handler, (void *)0);
for (i = 0 ; i < 100 ; i++)/*if delay is large, we should enlarge this waiting*/
{
Media_GetReadBuffer(&buf ,&len);
if ( len==0 )
kal_sleep_task(1);
else{
if ( (len + acmLen) >= BLOCK_SIZE ){/*acumulated length >= BLOCK_SIZE*/
len = BLOCK_SIZE - acmLen;/*recount samples to fit block*/
}
TD_ProcessBlock(&hdl, (kal_int16 *)buf, len);
#ifdef BTLB_DEBUG
{
int j;
for(j = 0 ; j < len ; j++ )
if( pcmDebugCnt < 80000 )
{
*pcmDebugPtr++ = buf[j];
pcmDebugCnt ++;
}
}
#endif
Media_ReadDataDone( len );
acmLen += len;
if ( acmLen >= BLOCK_SIZE){
magDB = TD_GetMagnitudeDB( &hdl );
kal_prompt_trace( MOD_L1SP, "magDB = %d", magDB);
if( magDB > BTLB_TONE_MAG_DB_THRESHOLD )
count ++;
TD_Reset( &hdl );
acmLen=0;//reset
if ( count > 2)
break;
}
}
}
#ifdef BTLB_DEBUG
{
int file_handle;
kal_prompt_trace(MOD_L1SP, "prepare to dump pcm file");
kal_wsprintf(debugFile, "d:\\BTLBdebug.pcm");
file_handle = FS_Open(debugFile, FS_CREATE);
if(file_handle > 0)
{
FS_Write( file_handle, (void *)btlbPcmDebugBuf, pcmDebugCnt << 1, NULL );
FS_Close(file_handle);
kal_prompt_trace(MOD_L1SP, "finish dump pcm file BTLBdebug.pcm");
}
else{
kal_prompt_trace(MOD_L1SP, "unable to dump file");
}
}
#endif
KT_StopAndWait();
Media_Stop();
AM_BluetoothOff();//close earphone mode
/*close loopback path, should be removed in the future*/
//*AFE_VAC_CON1 &= ~0x02;
free_ctrl_buffer( rb_base );
if ( count > 2){
return true;
}else
return false;
}
