/**
* @function OpenWav
* @brief open a wav file & start playback
* @param const char *path: file path
* @return int8_t: -1 -> error; 0 -> ok, the file is being played
*/
int8_t OpenWav(const char *path) {
int8_t res = -1;
WavStop();
/*open the file*/
if(f_open(&pFile, "waveform.wav", FA_OPEN_EXISTING | FA_READ) == FR_OK) {
/*TODO: check & get wav file information*/
/*WAV files are assumed to be 16bits 1CH 44.1kHz on this project*/
//wav_get_file_info()...
/*load file into buffers 1 & 2*/
isBuffer1Empty = true;
isBuffer2Empty = true;
LoadBuffers();
/*configure the playback frequency & its associated callback*/
TmrSetFrequency(WAV_TIMER, 44100);
TmrSetCallback(WAV_TIMER, Callback_1CH_16BITS);
/*we always start playback by using BUFFER_1*/
bufferToUse = BUFFER_1;
/*start playback*/
//WavPlay();
res = 0;
}
return res;
}
/**
* @function WavPlay
* @brief launch the WAV playback
* @param void (*pOut) (uint16_t dataIn): function to use for playback output
* @return none
*/
void WavPlay(void (*_pOut) (uint16_t dataIn)) {
if(isBuffer1Empty == false && _pOut != NULL) { /*if the buffer is not empty (i.e wav file is consistant)*/
pOut = _pOut;
TmrLaunch(WAV_TIMER);
state = WAV_PLAYING;
}
else {
WavStop();
}
}
/**
* @function WavProcess
* @brief WAV player task; shall be called cyclically
* @param none
* @return none
*/
void WavProcess(void) {
switch(state) {
/*WAV_STOPPED / WAV_PAUSED -> nothing to do*/
case WAV_STOPPED:
case WAV_PAUSED:
break;
/*WAV_PLAYING: check if the buffers are not empty / if the music is finished*/
case WAV_PLAYING:
if(LoadBuffers() < 0) {
WavStop();
}
break;
default:
WavStop();
break;
}
}
/**
* @function ARB_Stop
* @brief stop the arbitrary handler (stop timer, clear current sample #id)
* @param arb_st *arb: pointer to the arbitrary waveform handler
* @return none
*/
void ARB_Stop(arb_st *arb) {
if(arb != NULL) {
arb->run = 0;
arb->currentSample = 0;
/*stop the timer first, then the DDS*/
TmrStop(ARB_TIMER);
AD9834_Stop(0);
/*kill the wav playback if any*/
if(arb->waveformType == ARB_WAVE_WAV) {
WavStop();
}
}
}
BOOL CPlayer::UnpreparePlayback(BOOL fEos, BOOL fError)
{
if (fEos) {
if (m_pOutHdr) {
OutputBuffer(m_pOutHdr, m_cbOutBuf - m_cbOutBufLeft);
m_pOutHdr = NULL;
m_cbOutBufLeft = 0;
}
while (!m_Output.IsFlushed()) {
if (m_fPlay && GetStatus() == MAP_STATUS_PLAY) {
m_Output.Pause(FALSE);
m_fPlay = FALSE;
}
Sleep(1);
if (m_fSeek)
return FALSE;
if (m_fStop)
break;
UpdatePeek();
}
}
m_Output.Close();
m_Echo.Close();
m_Reverb.Close();
m_BassBoost.Close();
m_3DChorus.Close();
m_Decoder.Destroy();
if (!m_Options.fAlwaysOpenDevice || fError)
m_Output.CloseAll();
if (m_fOpen == OPEN_URL) {
m_Receiver.Disconnect();
m_StreamingStatus = MAP_STREAMING_DISCONNECTED;
}
m_pOutHdr = NULL;
m_cbOutBufLeft = 0;
m_nSeek = 0;
m_fPlay = FALSE;
m_fStop = FALSE;
m_fSeek = FALSE;
switch (m_fOpen) {
case OPEN_PLUGIN:
PlugInStop(); break;
case OPEN_MPG_FILE:
MpgStop(); break;
case OPEN_OV_FILE:
OvStop(); break;
case OPEN_WAV_FILE:
WavStop(); break;
case OPEN_URL:
NetStop(); break;
}
PostMessage(m_hwndMessage, MAP_MSG_PEEK, 0, 0);
UpdateStatus(MAP_STATUS_STOP, fError);
return TRUE;
}
