// Add more buffers to the playback queue - keep it full
private void RefillPlayBuffers()
{
while (m_qBuffers.Count < MaxBuffers)
{
int cb = (int)(BufferLen * m_format.SamplesPerSec * m_format.Channels);
byte[] data = new byte[cb];
for (int i = 0; i < m_streamArray.Count; i++)
{
if (m_streamArray[i] != null)
{
cb = ((Stream)m_streamArray[i]).Read(data, 0, cb);
break;
}
}
if (cb == 0)
{
break;
}
WaveHeader hdr = new WaveHeader(data);
Monitor.Enter(m_HandleMap.SyncRoot);
m_HandleMap.Add(hdr.Header.ToInt32(), hdr);
Monitor.Exit(m_HandleMap.SyncRoot);
// prepare the header
CheckWaveError(Wave.waveOutPrepareHeader(m_hWaveOut, hdr.Header, hdr.HeaderLength));
Monitor.Enter(m_qBuffers.SyncRoot);
m_qBuffers.Enqueue(hdr);
Monitor.Exit(m_qBuffers.SyncRoot);
}
}
private void m_recmw_WaveDoneMessage(object sender, IntPtr wParam, IntPtr lParam)
{
#if !NDOC
// Retrieve Waveheader object by the lpHeader pointer
Monitor.Enter(m_HandleMap.SyncRoot);
WaveHeader hdr = m_HandleMap[lParam.ToInt32()] as WaveHeader;
m_HandleMap.Remove(hdr.Header.ToInt32());
Monitor.Exit(m_HandleMap.SyncRoot);
// unprepare the header
CheckWaveError(Wave.waveInUnprepareHeader(m_hWaveIn, hdr.Header, hdr.HeaderLength));
hdr.RetrieveHeader();
m_qBuffers.Enqueue(hdr);
if (recordingFinished) // last chunk
{
DumpRecordBuffers();
CheckWaveError(Wave.waveInClose(m_hWaveIn));
WaveChunk wck = m_ck[0] as WaveChunk;
if (wck != null)
{
DataChunk dck = wck.FindChunk(FourCC.Data) as DataChunk;
if (dck != null)
{
dck.EndWrite();
}
wck.EndWrite();
}
m_ck.EndWrite();
m_streamRecord.Close();
// clean up the messageWindow
m_recmw.Dispose();
// reset the global flag
recording = false;
// set our event
if (DoneRecording != null)
{
DoneRecording();
}
foreach (WaveHeader whdr in m_HandleMap.Values)
{
whdr.Dispose();
}
m_HandleMap.Clear();
}
else
{
hdr = GetNewRecordBuffer(m_recBufferSize);
CheckWaveError(Wave.waveInAddBuffer(m_hWaveIn, hdr.Header, hdr.HeaderLength));
DumpRecordBuffers();
}
#endif
}
private void mw_WaveDoneMessage(object sender, IntPtr wParam, IntPtr lParam)
{
// free the header
Monitor.Enter(m_HandleMap.SyncRoot);
WaveHeader hdr = m_HandleMap[lParam.ToInt32()] as WaveHeader;
m_HandleMap.Remove(lParam.ToInt32());
Monitor.Exit(m_HandleMap.SyncRoot);
CheckWaveError(Wave.waveOutUnprepareHeader(m_hWaveOut, lParam, hdr.HeaderLength));
hdr.Dispose();
// Check if we got here because of waveOutReset
if (!m_playing)
{
// Cleanup - free buffers and headers
Monitor.Enter(m_qBuffers.SyncRoot);
while (m_qBuffers.Count > 0)
{
hdr = m_qBuffers.Dequeue() as WaveHeader;
CheckWaveError(Wave.waveOutUnprepareHeader(m_hWaveOut, hdr.Header, hdr.HeaderLength));
m_HandleMap.Remove(hdr.Header.ToInt32());
hdr.Dispose();
}
Monitor.Exit(m_qBuffers.SyncRoot);
}
// Are there any pending buffers?
if (m_qBuffers.Count == 0)
{
// No more buffers
// Close the device
CheckWaveError(Wave.waveOutClose(m_hWaveOut));
m_playing = false;
m_qBuffers = null;
// Notify clients
if (DonePlaying != null)
{
DonePlaying(this, wParam, lParam);
}
}
else
{
//Get next buffer (already prepared)
Monitor.Enter(m_qBuffers.SyncRoot);
hdr = (WaveHeader)m_qBuffers.Dequeue();
Monitor.Exit(m_qBuffers.SyncRoot);
// play the file
CheckWaveError(Wave.waveOutWrite(m_hWaveOut, hdr.Header, hdr.HeaderLength));
// Add more buffers
RefillPlayBuffers();
}
}
/// <summary>
/// Creates a recording buffer
/// </summary>
/// <param name="dwBufferSize"></param>
/// <returns>new buffer as WaveHeader</returns>
private WaveHeader GetNewRecordBuffer(int dwBufferSize)
{
WaveHeader hdr = new WaveHeader(dwBufferSize);
Monitor.Enter(m_HandleMap.SyncRoot);
m_HandleMap.Add(hdr.Header.ToInt32(), hdr);
Monitor.Exit(m_HandleMap.SyncRoot);
// prepare the header
CheckWaveError(Wave.waveInPrepareHeader(m_hWaveIn, hdr.Header, hdr.HeaderLength));
return(hdr);
}
private void DumpRecordBuffers()
{
while (m_qBuffers.Count > 0)
{
Monitor.Enter(m_qBuffers.SyncRoot);
WaveHeader hdr = (WaveHeader)m_qBuffers.Dequeue();
Monitor.Exit(m_qBuffers.SyncRoot);
m_streamRecord.Write(hdr.GetData(), 0, (int)hdr.waveHdr.BytesRecorded);
hdr.Dispose();
}
}
// Add more buffers to the playback queue - keep it full
private void RefillPlayBuffers()
{
while( m_qBuffers.Count < MaxBuffers )
{
int cb = (int)(BufferLen * m_format.SamplesPerSec * m_format.Channels);
byte[] data = new byte[cb];
for(int i = 0 ; i < m_streamArray.Count ; i++)
{
if( m_streamArray[i] != null )
{
cb = ((Stream)m_streamArray[i]).Read(data, 0, cb);
break;
}
}
if ( cb == 0 )
break;
WaveHeader hdr = new WaveHeader(data);
Monitor.Enter(m_HandleMap.SyncRoot);
m_HandleMap.Add(hdr.Header.ToInt32(), hdr);
Monitor.Exit(m_HandleMap.SyncRoot);
// prepare the header
CheckWaveError(Wave.waveOutPrepareHeader(m_hWaveOut, hdr.Header, hdr.HeaderLength));
Monitor.Enter(m_qBuffers.SyncRoot);
m_qBuffers.Enqueue(hdr);
Monitor.Exit(m_qBuffers.SyncRoot);
}
}
/// <summary>
/// Creates a recording buffer
/// </summary>
/// <param name="dwBufferSize"></param>
/// <returns>new buffer as WaveHeader</returns>
private WaveHeader GetNewRecordBuffer(int dwBufferSize)
{
WaveHeader hdr = new WaveHeader(dwBufferSize);
Monitor.Enter(m_HandleMap.SyncRoot);
m_HandleMap.Add(hdr.Header.ToInt32(), hdr);
Monitor.Exit(m_HandleMap.SyncRoot);
// prepare the header
CheckWaveError(Wave.waveInPrepareHeader(m_hWaveIn, hdr.Header, hdr.HeaderLength));
return hdr;
}
/// <summary>
/// Record sound data for specified number of seconds using given wave format
/// The stream will be a properly formatted RIFF file
/// </summary>
/// <param name="st">Stream into which recorded samples are written</param>
/// <param name="Seconds">Seconds of data to record</param>
/// <param name="SoundFormat">Sound format to record in.</param>
public void RecordFor(Stream st, short Seconds, SoundFormats SoundFormat)
{
m_hWaveIn = IntPtr.Zero;
// only allow 1 recording session at a time
if (recording)
{
throw new InvalidOperationException("Already recording");
}
// set our global flag
recording = true;
if (m_qBuffers == null)
{
m_qBuffers = new Queue(MaxBuffers);
}
if (m_HandleMap == null)
{
m_HandleMap = new Hashtable(MaxBuffers);
}
m_recformat = new WaveFormatEx();
#if !NDOC
// create the callback message window
m_recmw = new SoundMessageWindow();
m_recmw.WaveDoneMessage += new WaveDoneHandler(m_recmw_WaveDoneMessage);
m_recmw.WaveCloseMessage += new WaveCloseHandler(mw_WaveCloseMessage);
m_recmw.WaveOpenMessage += new WaveOpenHandler(mw_WaveOpenMessage);
#endif
// set up format
#region long format switch()
switch (SoundFormat)
{
case SoundFormats.Mono16bit11kHz:
m_recformat.Channels = 1;
m_recformat.SamplesPerSec = 11025;
m_recformat.BitsPerSample = 16;
break;
case SoundFormats.Mono16bit22kHz:
m_recformat.Channels = 1;
m_recformat.SamplesPerSec = 22050;
m_recformat.BitsPerSample = 16;
break;
case SoundFormats.Mono16bit44kHz:
m_recformat.Channels = 1;
m_recformat.SamplesPerSec = 44100;
m_recformat.BitsPerSample = 16;
break;
case SoundFormats.Mono8bit11kHz:
m_recformat.Channels = 1;
m_recformat.SamplesPerSec = 11025;
m_recformat.BitsPerSample = 8;
break;
case SoundFormats.Mono8bit22kHz:
m_recformat.Channels = 1;
m_recformat.SamplesPerSec = 22050;
m_recformat.BitsPerSample = 8;
break;
case SoundFormats.Mono8bit44kHz:
m_recformat.Channels = 1;
m_recformat.SamplesPerSec = 44100;
m_recformat.BitsPerSample = 8;
break;
case SoundFormats.Stereo16bit11kHz:
m_recformat.Channels = 2;
m_recformat.SamplesPerSec = 11025;
m_recformat.BitsPerSample = 16;
break;
case SoundFormats.Stereo16bit22kHz:
m_recformat.Channels = 2;
m_recformat.SamplesPerSec = 22050;
m_recformat.BitsPerSample = 16;
break;
case SoundFormats.Stereo16bit44kHz:
m_recformat.Channels = 2;
m_recformat.SamplesPerSec = 44100;
m_recformat.BitsPerSample = 16;
break;
case SoundFormats.Stereo8bit11kHz:
m_recformat.Channels = 2;
m_recformat.SamplesPerSec = 11025;
m_recformat.BitsPerSample = 8;
break;
case SoundFormats.Stereo8bit22kHz:
m_recformat.Channels = 2;
m_recformat.SamplesPerSec = 22050;
m_recformat.BitsPerSample = 8;
break;
case SoundFormats.Stereo8bit44kHz:
m_recformat.Channels = 2;
m_recformat.SamplesPerSec = 44100;
m_recformat.BitsPerSample = 8;
break;
}
#endregion long format switch()
m_recformat.FormatTag = WAVE_FORMAT_PCM;
m_recformat.AvgBytesPerSec = m_recformat.SamplesPerSec * m_recformat.Channels;
m_recformat.BlockAlign = (short)((m_recformat.Channels * m_recformat.BitsPerSample) / 8);
m_recformat.Size = 0;
m_ck = new RiffChunk(st);
m_ck.BeginWrite();
WaveChunk wck = m_ck.CreateSubChunk(FourCC.Wave, st) as WaveChunk;
wck.BeginWrite();
FmtChunk fck = wck.CreateSubChunk(FourCC.Fmt, st) as FmtChunk;
fck.BeginWrite();
fck.WaveFormat = m_recformat;
fck.Write(fck.WaveFormat.GetBytes());
fck.EndWrite();
DataChunk dck = wck.CreateSubChunk(FourCC.Data, st) as DataChunk;
m_streamRecord = dck.BeginWrite();
#if !NDOC
// check for support of selected format
CheckWaveError(Wave.waveInOpen(out m_hWaveIn, WAVE_MAPPER, m_recformat, IntPtr.Zero, 0, WAVE_FORMAT_QUERY));
// open wave device
CheckWaveError(Wave.waveInOpen(out m_hWaveIn, (uint)m_deviceID, m_recformat, m_recmw.Hwnd, 0, CALLBACK_WINDOW));
m_recBufferSize = (int)(Math.Min((int)Seconds, BufferLen) * m_recformat.SamplesPerSec * m_recformat.Channels);
for (int i = 0; i < 2; i++)
{
WaveHeader hdr = GetNewRecordBuffer(m_recBufferSize);
// send the buffer to the device
CheckWaveError(Wave.waveInAddBuffer(m_hWaveIn, hdr.Header, hdr.HeaderLength));
}
// begin recording
CheckWaveError(Wave.waveInStart(m_hWaveIn));
recordingFinished = false;
m_recTimer = new Timer(new TimerCallback(RecTimerCallback), this, Seconds * 1000, Timeout.Infinite);
#endif
}
/// <summary>
/// Plays waveform contained in the given stream. Stream is exepcted to contain full riff header
/// </summary>
/// <param name="playStream">Stream with the waveform</param>
public void Play(Stream playStream)
{
if (m_playing)
{
return;
}
MMChunk ck = MMChunk.FromStream(playStream);
if (ck != null && ck.FourCC == FourCC.Riff)
{
if (ck[0] is WaveChunk)
{
DataChunk dck = ck[0].FindChunk(FourCC.Data) as DataChunk;
if (dck != null)
{
playStream = dck.BeginRead();
}
FmtChunk fck = ck[0].FindChunk(FourCC.Fmt) as FmtChunk;
if (fck != null)
{
m_format = fck.WaveFormat;
}
}
}
if (playStream == null)
{
throw new Exception("No valid WAV file has been opened");
}
#if !NDOC
if (m_qBuffers == null)
{
m_qBuffers = new Queue(MaxBuffers);
}
if (m_HandleMap == null)
{
m_HandleMap = new Hashtable(MaxBuffers);
}
// create a window to catch waveOutxxx messages
SoundMessageWindow mw = new SoundMessageWindow();
// wire in events
mw.WaveOpenMessage += new WaveOpenHandler(mw_WaveOpenMessage);
mw.WaveCloseMessage += new WaveCloseHandler(mw_WaveCloseMessage);
mw.WaveDoneMessage += new WaveDoneHandler(mw_WaveDoneMessage);
// add it to the global array
int i = m_mwArray.Add(mw);
m_streamArray.Add(playStream);
// open the waveOut device and register the callback
CheckWaveError(Wave.waveOutOpen(out m_hWaveOut, m_deviceID, m_format, ((SoundMessageWindow)m_mwArray[i]).Hwnd, 0, CALLBACK_WINDOW));
RefillPlayBuffers();
Monitor.Enter(m_qBuffers.SyncRoot);
WaveHeader hdr = m_qBuffers.Dequeue() as WaveHeader;
Monitor.Exit(m_qBuffers.SyncRoot);
// play the file
int ret = Wave.waveOutWrite(m_hWaveOut, hdr.Header, hdr.HeaderLength);
CheckWaveError(ret);
m_playing = true;
#endif
}
