private void setBufferAndWave(double lengthFactor)
{
var waveFormat = new WaveFormat();
waveFormat.SamplesPerSecond = samplesPerSecond;
waveFormat.Channels = 2;
waveFormat.FormatTag = WaveFormatTag.Pcm;
waveFormat.BitsPerSample = 16;
waveFormat.BlockAlign = (short)(waveFormat.Channels * waveFormat.BitsPerSample / 8);
waveFormat.AverageBytesPerSecond = waveFormat.BlockAlign * waveFormat.SamplesPerSecond;
var bufferDesc = new BufferDescription(waveFormat);
bufferDesc.DeferLocation = true;
bufferDesc.Control3D = false;
bufferDesc.ControlEffects = false;
bufferDesc.ControlFrequency = true;
bufferDesc.ControlPan = true;
bufferDesc.ControlVolume = true;
bufferDesc.GlobalFocus = true;
bufferDesc.BufferBytes = Convert.ToInt32(lengthFactor * DitLengthSecond *
waveFormat.AverageBytesPerSecond);
if (buffer != null)
{
buffer.Stop();
buffer.Dispose();
buffer = null;
}
buffer = new SecondaryBuffer(bufferDesc, device);
bufferDesc.Dispose();
bufferDesc = null;
}
public void Dispose()
{
StopThread();
if (_sBuffer != null)
{
_sBuffer.Dispose();
}
for (int i = 0; i < _devices.Length; i++)
{
_devices[i].Dispose();
}
_bufferDescription.Dispose();
}
public void Stop()
{
if (mp3Stream == null)
{
return;
}
if (secondaryBuffer == null)
{
return;
}
Playing = false;
bufferDescription.Dispose();
secondaryBuffer.Dispose();
mp3Stream.Dispose();
mp3Stream = null;
}
private void stopButton__Click(object sender, EventArgs e)
{
if (secondaryBuffer_ == null)
{
return;
}
secondaryBuffer_.Dispose();
secondaryBuffer_ = null;
bufferDescription_.Dispose();
bufferDescription_ = null;
deviceComboBox_.Enabled = true;
selectFileButton_.Enabled = true;
stopButton_.Enabled = false;
playOrStopButton_.Text = "Play";
}
private void setBufferAndWave(double lengthFactor)
{
var waveFormat = new WaveFormat();
waveFormat.SamplesPerSecond = samplesPerSecond;
waveFormat.Channels = 2;
waveFormat.FormatTag = WaveFormatTag.Pcm;
waveFormat.BitsPerSample = 16;
waveFormat.BlockAlign = (short)(waveFormat.Channels * waveFormat.BitsPerSample / 8);
waveFormat.AverageBytesPerSecond = waveFormat.BlockAlign * waveFormat.SamplesPerSecond;
var bufferDesc = new BufferDescription(waveFormat);
bufferDesc.DeferLocation = true;
bufferDesc.Control3D = false;
bufferDesc.ControlEffects = false;
bufferDesc.ControlFrequency = true;
bufferDesc.ControlPan = true;
bufferDesc.ControlVolume = true;
bufferDesc.GlobalFocus = true;
bufferDesc.BufferBytes = Convert.ToInt32(lengthFactor * DitLengthSecond *
waveFormat.AverageBytesPerSecond);
if (buffer != null)
{
buffer.Stop();
buffer.Dispose();
buffer = null;
}
buffer = new SecondaryBuffer(bufferDesc, device);
bufferDesc.Dispose();
bufferDesc = null;
}
private static void PlayThread(object osn)
{
EmulatorForm myform = (EmulatorForm)osn;
SecondaryBuffer SecBuf;
AutoResetEvent SecBufNotifyAtHalf = new AutoResetEvent(false);
AutoResetEvent SecBufNotifyAtBeginning = new AutoResetEvent(false);
int SamplingRate = (int)myform._samplingRate;
int HoldThisManySamples = (int)(1 * SamplingRate);
int BlockAlign = 2;
int SecBufByteSize = HoldThisManySamples * BlockAlign;
WaveFormat MyWaveFormat = new WaveFormat();
// Set the format
MyWaveFormat.AverageBytesPerSecond = (int)(myform._samplingRate * BlockAlign);
MyWaveFormat.BitsPerSample = (short)16;
MyWaveFormat.BlockAlign = (short)BlockAlign;
MyWaveFormat.Channels = (short)1;
MyWaveFormat.SamplesPerSecond = (int)myform._samplingRate;
MyWaveFormat.FormatTag = WaveFormatTag.Pcm;
BufferDescription MyDescription;
// Set BufferDescription
MyDescription = new BufferDescription();
MyDescription.Format = MyWaveFormat;
MyDescription.BufferBytes = HoldThisManySamples * BlockAlign;
MyDescription.CanGetCurrentPosition = true;
MyDescription.ControlPositionNotify = true;
MyDescription.GlobalFocus = true;
// Create the buffer
SecBuf = new SecondaryBuffer(MyDescription, myform._directSoundDevice);
Notify MyNotify;
MyNotify = new Notify(SecBuf);
BufferPositionNotify[] MyBufferPositions = new BufferPositionNotify[2];
MyBufferPositions[0].Offset = 0;
MyBufferPositions[0].EventNotifyHandle = SecBufNotifyAtBeginning.Handle;
MyBufferPositions[1].Offset = (HoldThisManySamples / 2) * BlockAlign;
MyBufferPositions[1].EventNotifyHandle = SecBufNotifyAtHalf.Handle;
MyNotify.SetNotificationPositions(MyBufferPositions);
WaitHandle[] SecBufWaitHandles = { SecBufNotifyAtBeginning, SecBufNotifyAtHalf };
Int16[] buffer;
buffer = myform._sn.GenerateSamples((uint)HoldThisManySamples, "");
SecBuf.Write(0, buffer, LockFlag.None);
SecBuf.Play(0, BufferPlayFlags.Looping);
int SecBufNextWritePosition = 0;
while (myform._bufferPlaying)
{
int WriteCount = 0,
PlayPosition = SecBuf.PlayPosition,
WritePosition = SecBuf.WritePosition;
if (SecBufNextWritePosition < PlayPosition &&
(WritePosition >= PlayPosition || WritePosition < SecBufNextWritePosition))
{
WriteCount = PlayPosition - SecBufNextWritePosition;
}
else if (SecBufNextWritePosition > WritePosition &&
WritePosition >= PlayPosition)
{
WriteCount = (SecBufByteSize - SecBufNextWritePosition) + PlayPosition;
}
// System.Diagnostics.Debug.WriteLine("WC: "+WriteCount.ToString());
if (WriteCount > 0)
{
WriteCount = (int)Math.Min(WriteCount, 1000);
buffer = myform._sn.GenerateSamples((uint)WriteCount / 2, "");
SecBuf.Write(
SecBufNextWritePosition,
buffer,
LockFlag.None);
SecBufNextWritePosition = (SecBufNextWritePosition + WriteCount) % SecBufByteSize;
}
else
{
WaitHandle.WaitAny(SecBufWaitHandles, new TimeSpan(0, 0, 5), true);
}
}
SecBuf.Dispose();
MyDescription.Dispose();
MyNotify.Dispose();
}
private static void PlayThread(object osn)
{
EmulatorForm myform = (EmulatorForm)osn;
SecondaryBuffer SecBuf;
AutoResetEvent SecBufNotifyAtHalf = new AutoResetEvent(false);
AutoResetEvent SecBufNotifyAtBeginning = new AutoResetEvent(false);
int SamplingRate = (int)myform._samplingRate;
int HoldThisManySamples = (int)(1 * SamplingRate);
int BlockAlign = 2;
int SecBufByteSize = HoldThisManySamples * BlockAlign;
WaveFormat MyWaveFormat = new WaveFormat();
// Set the format
MyWaveFormat.AverageBytesPerSecond = (int)(myform._samplingRate * BlockAlign);
MyWaveFormat.BitsPerSample = (short)16;
MyWaveFormat.BlockAlign = (short)BlockAlign;
MyWaveFormat.Channels = (short)1;
MyWaveFormat.SamplesPerSecond = (int)myform._samplingRate;
MyWaveFormat.FormatTag = WaveFormatTag.Pcm;
BufferDescription MyDescription;
// Set BufferDescription
MyDescription = new BufferDescription();
MyDescription.Format = MyWaveFormat;
MyDescription.BufferBytes = HoldThisManySamples * BlockAlign;
MyDescription.CanGetCurrentPosition = true;
MyDescription.ControlPositionNotify = true;
MyDescription.GlobalFocus = true;
// Create the buffer
SecBuf = new SecondaryBuffer(MyDescription,myform._directSoundDevice);
Notify MyNotify;
MyNotify = new Notify(SecBuf);
BufferPositionNotify[] MyBufferPositions = new BufferPositionNotify[2];
MyBufferPositions[0].Offset = 0;
MyBufferPositions[0].EventNotifyHandle = SecBufNotifyAtBeginning.Handle;
MyBufferPositions[1].Offset = (HoldThisManySamples / 2) * BlockAlign;
MyBufferPositions[1].EventNotifyHandle = SecBufNotifyAtHalf.Handle;
MyNotify.SetNotificationPositions(MyBufferPositions);
WaitHandle[] SecBufWaitHandles = { SecBufNotifyAtBeginning, SecBufNotifyAtHalf };
Int16[] buffer;
buffer = myform._sn.GenerateSamples((uint)HoldThisManySamples, "");
SecBuf.Write(0, buffer, LockFlag.None);
SecBuf.Play(0, BufferPlayFlags.Looping);
int SecBufNextWritePosition = 0;
while (myform._bufferPlaying)
{
int WriteCount = 0,
PlayPosition = SecBuf.PlayPosition,
WritePosition = SecBuf.WritePosition;
if (SecBufNextWritePosition < PlayPosition
&& (WritePosition >= PlayPosition || WritePosition < SecBufNextWritePosition))
WriteCount = PlayPosition - SecBufNextWritePosition;
else if (SecBufNextWritePosition > WritePosition
&& WritePosition >= PlayPosition)
WriteCount = (SecBufByteSize - SecBufNextWritePosition) + PlayPosition;
// System.Diagnostics.Debug.WriteLine("WC: "+WriteCount.ToString());
if (WriteCount > 0)
{
WriteCount = (int)Math.Min(WriteCount,1000);
buffer = myform._sn.GenerateSamples((uint)WriteCount/2, "");
SecBuf.Write(
SecBufNextWritePosition,
buffer,
LockFlag.None);
SecBufNextWritePosition = (SecBufNextWritePosition + WriteCount) % SecBufByteSize;
}
else
{
WaitHandle.WaitAny(SecBufWaitHandles, new TimeSpan(0, 0, 5), true);
}
}
SecBuf.Dispose();
MyDescription.Dispose();
MyNotify.Dispose();
}