/// <summary>
/// Called when we get a new buffer of recorded data
/// </summary>
private void Callback(IntPtr waveInHandle, WaveInterop.WaveMessage message, int userData, WaveHeader waveHeader, int reserved)
{
if (message == WaveInterop.WaveMessage.WaveInData)
{
GCHandle hBuffer = (GCHandle)waveHeader.userData;
WaveInBuffer buffer = (WaveInBuffer)hBuffer.Target;
length += buffer.BytesRecorded;
if (DataAvailable != null)
{
DataAvailable(this, new WaveInEventArgs(buffer.Data, buffer.BytesRecorded));
}
if (recording)
{
buffer.Reuse();
}
else
{
if (RecordingStopped != null)
{
RecordingStopped(this, EventArgs.Empty);
}
}
}
}
internal MmResult WaveOutOpen(out IntPtr waveOutHandle, int deviceNumber, WaveFormat waveFormat, WaveInterop.WaveCallback callback)
{
MmResult result;
if (Strategy == WaveCallbackStrategy.FunctionCallback)
{
result = WaveInterop.waveOutOpen(out waveOutHandle, deviceNumber, waveFormat, callback, 0, WaveInterop.CallbackFunction);
}
else
{
result = WaveInterop.waveOutOpenWindow(out waveOutHandle, deviceNumber, waveFormat, this.Handle, 0, WaveInterop.CallbackWindow);
}
return result;
}
internal void Connect(WaveInterop.WaveCallback callback)
{
if (Strategy == WaveCallbackStrategy.NewWindow)
{
waveOutWindow = new WaveWindow(callback);
waveOutWindow.CreateControl();
this.Handle = waveOutWindow.Handle;
}
else if (Strategy == WaveCallbackStrategy.ExistingWindow)
{
waveOutWindowNative = new WaveWindowNative(callback);
waveOutWindowNative.AssignHandle(this.Handle);
}
}
/// <summary>
/// Stop and reset the WaveOut device
/// </summary>
public void Stop()
{
if (playbackState != PlaybackState.Stopped)
{
MmResult result;
playbackState = PlaybackState.Stopped; // set this here to avoid a problem with some drivers whereby
// in the call to waveOutReset they don't return until an OnDone is called
lock (waveOutLock)
{
result = WaveInterop.waveOutReset(hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutReset");
}
}
}
public long GetPosition()
{
long result;
lock (this.waveOutLock)
{
MmTime mmTime = default(MmTime);
mmTime.wType = 4u;
MmException.Try(WaveInterop.waveOutGetPosition(this.hWaveOut, out mmTime, Marshal.SizeOf(mmTime)), "waveOutGetPosition");
if (mmTime.wType != 4u)
{
throw new Exception(string.Format("waveOutGetPosition: wType -> Expected {0}, Received {1}", 4, mmTime.wType));
}
result = (long)((ulong)mmTime.cb);
}
return(result);
}
public void Stop()
{
if (this.playbackState != PlaybackState.Stopped)
{
this.playbackState = PlaybackState.Stopped;
MmResult mmResult;
lock (this.waveOutLock)
{
mmResult = WaveInterop.waveOutReset(this.hWaveOut);
}
if (mmResult != MmResult.NoError)
{
throw new MmException(mmResult, "waveOutReset");
}
this.callbackEvent.Set();
}
}
/// <summary>
/// Pause the audio
/// </summary>
public void Pause()
{
if (playbackState == PlaybackState.Playing)
{
playbackState = PlaybackState.Paused; // set this here to avoid a deadlock problem with some drivers
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutPause(hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutPause");
}
}
}
private GCHandle hThis; // for the user callback
/// <summary>
/// creates a new wavebuffer
/// </summary>
/// <param name="waveInHandle">WaveIn device to write to</param>
/// <param name="bufferSize">Buffer size in bytes</param>
public WaveInBuffer(IntPtr waveInHandle, Int32 bufferSize)
{
this.bufferSize = bufferSize;
this.buffer = new byte[bufferSize];
this.hBuffer = GCHandle.Alloc(buffer, GCHandleType.Pinned);
this.waveInHandle = waveInHandle;
header = new WaveHeader();
hHeader = GCHandle.Alloc(header, GCHandleType.Pinned);
header.dataBuffer = hBuffer.AddrOfPinnedObject();
header.bufferLength = bufferSize;
header.loops = 1;
hThis = GCHandle.Alloc(this);
header.userData = (IntPtr)hThis;
MmException.Try(WaveInterop.waveInPrepareHeader(waveInHandle, header, Marshal.SizeOf(header)), "waveInPrepareHeader");
//MmException.Try(WaveInterop.waveInAddBuffer(waveInHandle, header, Marshal.SizeOf(header)), "waveInAddBuffer");
}
private void Exit()
{
if (hWaveOut != IntPtr.Zero)
{
Stop();
WaveInterop.waveOutClose(hWaveOut);
hWaveOut = IntPtr.Zero;
}
if (buffers != null)
{
for (int n = 0; n < numBuffers; n++)
{
buffers[n].Dispose();
}
buffers = null;
}
}
private void CloseWaveInDevice()
{
if (this.waveInHandle == IntPtr.Zero)
{
return;
}
WaveInterop.waveInReset(this.waveInHandle);
if (this.buffers != null)
{
for (int i = 0; i < this.buffers.Length; i++)
{
this.buffers[i].Dispose();
}
this.buffers = null;
}
WaveInterop.waveInClose(this.waveInHandle);
this.waveInHandle = IntPtr.Zero;
}
public void StopRecording()
{
if (this.recording)
{
this.recording = false;
MmException.Try(WaveInterop.waveInStop(this.waveInHandle), "waveInStop");
for (int i = 0; i < this.buffers.Length; i++)
{
int num = (i + this.lastReturnedBufferIndex + 1) % this.buffers.Length;
WaveInBuffer waveInBuffer = this.buffers[num];
if (waveInBuffer.Done)
{
this.RaiseDataAvailable(waveInBuffer);
}
}
this.RaiseRecordingStopped(null);
}
}
/// <summary>
/// Gets the current position in bytes from the wave output device.
/// (n.b. this is not the same thing as the position within your reader
/// stream - it calls directly into waveOutGetPosition)
/// </summary>
/// <returns>Position in bytes</returns>
public long GetPosition()
{
lock (waveOutLock)
{
var mmTime = new MmTime();
mmTime.wType =
MmTime.TIME_BYTES; // request results in bytes, TODO: perhaps make this a little more flexible and support the other types?
MmException.Try(WaveInterop.waveOutGetPosition(hWaveOut, out mmTime, Marshal.SizeOf(mmTime)),
"waveOutGetPosition");
if (mmTime.wType != MmTime.TIME_BYTES)
{
throw new Exception(string.Format("waveOutGetPosition: wType -> Expected {0}, Received {1}",
MmTime.TIME_BYTES, mmTime.wType));
}
return(mmTime.cb);
}
}
private void CloseWaveInDevice()
{
if (waveInHandle == IntPtr.Zero)
{
return;
}
// Some drivers need the reset to properly release buffers
WaveInterop.waveInReset(waveInHandle);
if (buffers != null)
{
for (int n = 0; n < buffers.Length; n++)
{
buffers[n].Dispose();
}
buffers = null;
}
WaveInterop.waveInClose(waveInHandle);
waveInHandle = IntPtr.Zero;
}
internal static void SetWaveOutVolume(float value, IntPtr hWaveOut, object lockObject)
{
if (value < 0f)
{
throw new ArgumentOutOfRangeException("value", "Volume must be between 0.0 and 1.0");
}
if (value > 1f)
{
throw new ArgumentOutOfRangeException("value", "Volume must be between 0.0 and 1.0");
}
int dwVolume = (int)(value * 65535f) + ((int)(value * 65535f) << 16);
MmResult result;
lock (lockObject)
{
result = WaveInterop.waveOutSetVolume(hWaveOut, dwVolume);
}
MmException.Try(result, "waveOutSetVolume");
}
public void Stop()
{
if (this.playbackState != PlaybackState.Stopped)
{
this.playbackState = PlaybackState.Stopped;
MmResult mmResult;
lock (this.waveOutLock)
{
mmResult = WaveInterop.waveOutReset(this.hWaveOut);
}
if (mmResult != MmResult.NoError)
{
throw new MmException(mmResult, "waveOutReset");
}
if (this.callbackInfo.Strategy == WaveCallbackStrategy.FunctionCallback)
{
this.RaisePlaybackStoppedEvent(null);
}
}
}
/// <summary>
/// Resume playing after a pause from the same position
/// </summary>
public void Resume()
{
if (Thread.CurrentThread.ManagedThreadId != waveOutThread.ManagedThreadId)
{
lock (actionQueue)
{
actionQueue.Enqueue(new WaveOutAction(WaveOutFunction.Resume, null));
workAvailable.Set();
}
return;
}
MmResult result = WaveInterop.waveOutRestart(hWaveOut);
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutRestart");
}
playbackState = PlaybackState.Playing;
}
/// <summary>
/// creates a new wavebuffer
/// </summary>
/// <param name="hWaveOut">WaveOut device to write to</param>
/// <param name="bufferSize">Buffer size in bytes</param>
/// <param name="bufferFillStream">Stream to provide more data</param>
/// <param name="waveOutLock">Lock to protect WaveOut API's from being called on >1 thread</param>
// Token: 0x06000BCD RID: 3021 RVA: 0x00023868 File Offset: 0x00021A68
public WaveOutBuffer(IntPtr hWaveOut, int bufferSize, IWaveProvider bufferFillStream, object waveOutLock)
{
this.bufferSize = bufferSize;
this.buffer = new byte[bufferSize];
this.hBuffer = GCHandle.Alloc(this.buffer, GCHandleType.Pinned);
this.hWaveOut = hWaveOut;
this.waveStream = bufferFillStream;
this.waveOutLock = waveOutLock;
this.header = new WaveHeader();
this.hHeader = GCHandle.Alloc(this.header, GCHandleType.Pinned);
this.header.dataBuffer = this.hBuffer.AddrOfPinnedObject();
this.header.bufferLength = bufferSize;
this.header.loops = 1;
this.hThis = GCHandle.Alloc(this);
this.header.userData = (IntPtr)this.hThis;
lock (waveOutLock)
{
MmException.Try(WaveInterop.waveOutPrepareHeader(hWaveOut, this.header, Marshal.SizeOf(this.header)), "waveOutPrepareHeader");
}
}
/// <summary>
/// Stop and reset the WaveOut device
/// </summary>
public void Stop()
{
if (playbackState != PlaybackState.Stopped)
{
// in the call to waveOutReset with function callbacks
// some drivers will block here until OnDone is called
// for every buffer
playbackState = PlaybackState.Stopped; // set this here to avoid a problem with some drivers whereby
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutReset(hWaveOut);
}
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutReset");
}
callbackEvent.Set(); // give the thread a kick, make sure we exit
}
}
/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
this.waveStream = waveProvider;
int bufferSize = waveProvider.WaveFormat.ConvertLatencyToByteSize((DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutOpenWindow(out hWaveOut, (IntPtr)DeviceNumber, waveStream.WaveFormat, callbackEvent.SafeWaitHandle.DangerousGetHandle(), IntPtr.Zero, WaveInterop.WaveInOutOpenFlags.CallbackEvent);
}
MmException.Try(result, "waveOutOpen");
buffers = new WaveOutBuffer[NumberOfBuffers];
playbackState = PlaybackState.Stopped;
for (int n = 0; n < NumberOfBuffers; n++)
{
buffers[n] = new WaveOutBuffer(hWaveOut, bufferSize, waveStream, waveOutLock);
}
}
/// <summary>
/// Releases resources held by this WaveBuffer
/// </summary>
// Token: 0x06000BA8 RID: 2984 RVA: 0x00022E9C File Offset: 0x0002109C
protected void Dispose(bool disposing)
{
if (this.waveInHandle != IntPtr.Zero)
{
WaveInterop.waveInUnprepareHeader(this.waveInHandle, this.header, Marshal.SizeOf(this.header));
this.waveInHandle = IntPtr.Zero;
}
if (this.hHeader.IsAllocated)
{
this.hHeader.Free();
}
if (this.hBuffer.IsAllocated)
{
this.hBuffer.Free();
}
if (this.hThis.IsAllocated)
{
this.hThis.Free();
}
}
/// <summary>
/// Stop and reset the WaveOut device
/// </summary>
public void Stop()
{
if (Thread.CurrentThread.ManagedThreadId != waveOutThread.ManagedThreadId)
{
lock (actionQueue)
{
actionQueue.Enqueue(new WaveOutAction(WaveOutFunction.Stop, null));
workAvailable.Set();
}
return;
}
playbackState = PlaybackState.Stopped;
buffersQueued = false;
MmResult result = WaveInterop.waveOutReset(hWaveOut);
if (result != MmResult.NoError)
{
throw new MmException(result, "waveOutReset");
}
}
/// <summary>
/// Stop recording
/// </summary>
public void StopRecording()
{
if (recording)
{
recording = false;
MmException.Try(WaveInterop.waveInStop(waveInHandle), "waveInStop");
// report the last buffers, sometimes more than one, so taking care to report them in the right order
for (int n = 0; n < buffers.Length; n++)
{
int index = (n + lastReturnedBufferIndex + 1) % buffers.Length;
var buffer = buffers[index];
if (buffer.Done)
{
RaiseDataAvailable(buffer);
}
}
RaiseRecordingStopped(null);
}
//MmException.Try(WaveInterop.waveInReset(waveInHandle), "waveInReset");
// Don't actually close yet so we get the last buffer
}
/// <summary>
/// Initialises the WaveOut device
/// </summary>
/// <param name="waveProvider">WaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
if (playbackState != PlaybackState.Stopped)
{
throw new InvalidOperationException("Can't re-initialize during playback");
}
if (hWaveOut != IntPtr.Zero)
{
// normally we don't allow calling Init twice, but as experiment, see if we can clean up and go again
// try to allow reuse of this waveOut device
// n.b. risky if Playback thread has not exited
DisposeBuffers();
CloseWaveOut();
}
callbackEvent = new AutoResetEvent(false);
waveStream = waveProvider;
int bufferSize =
waveProvider.WaveFormat.ConvertLatencyToByteSize(
(DesiredLatency + NumberOfBuffers - 1) / NumberOfBuffers);
MmResult result;
lock (waveOutLock)
{
result = WaveInterop.waveOutOpenWindow(out hWaveOut, (IntPtr)DeviceNumber, waveStream.WaveFormat,
callbackEvent.SafeWaitHandle.DangerousGetHandle(), IntPtr.Zero,
WaveInterop.WaveInOutOpenFlags.CallbackEvent);
}
MmException.Try(result, "waveOutOpen");
buffers = new WaveOutBuffer[NumberOfBuffers];
playbackState = PlaybackState.Stopped;
for (var n = 0; n < NumberOfBuffers; n++)
{
buffers[n] = new WaveOutBuffer(hWaveOut, bufferSize, waveStream, waveOutLock);
}
}
internal static void SetWaveOutVolume(float value, IntPtr hWaveOut, object lockObject)
{
if (value < 0)
{
throw new ArgumentOutOfRangeException("value", "Volume must be between 0.0 and 1.0");
}
if (value > 1)
{
throw new ArgumentOutOfRangeException("value", "Volume must be between 0.0 and 1.0");
}
float left = value;
float right = value;
int stereoVolume = (int)(left * 0xFFFF) + ((int)(right * 0xFFFF) << 16);
MmResult result;
lock (lockObject)
{
result = WaveInterop.waveOutSetVolume(hWaveOut, stereoVolume);
}
MmException.Try(result, "waveOutSetVolume");
}
protected void Dispose(bool disposing)
{
this.Stop();
if (disposing && this.buffers != null)
{
for (int i = 0; i < this.buffers.Length; i++)
{
if (this.buffers[i] != null)
{
this.buffers[i].Dispose();
}
}
this.buffers = null;
}
lock (this.waveOutLock)
{
WaveInterop.waveOutClose(this.hWaveOut);
}
if (disposing)
{
this.callbackInfo.Disconnect();
}
}
/// <summary>
/// Releases resources held by this WaveBuffer
/// </summary>
// Token: 0x06000BD0 RID: 3024 RVA: 0x000239A8 File Offset: 0x00021BA8
protected void Dispose(bool disposing)
{
if (this.hHeader.IsAllocated)
{
this.hHeader.Free();
}
if (this.hBuffer.IsAllocated)
{
this.hBuffer.Free();
}
if (this.hThis.IsAllocated)
{
this.hThis.Free();
}
if (this.hWaveOut != IntPtr.Zero)
{
lock (this.waveOutLock)
{
WaveInterop.waveOutUnprepareHeader(this.hWaveOut, this.header, Marshal.SizeOf(this.header));
}
this.hWaveOut = IntPtr.Zero;
}
}
//BPCM added
internal static void SetWaveOutRate(float value, IntPtr hWaveOut, object lockObject)
{
if (value < 0)
{
throw new ArgumentOutOfRangeException("value", "Rate must be between 0.0 and 4.0");
}
if (value > 4)
{
throw new ArgumentOutOfRangeException("value", "Rate must be between 0.0 and 4.0");
}
ushort hi = (ushort)Math.Floor(value);
ushort lo = (ushort)Math.Round(0xFFFF * (value - Math.Floor(value)), 0);
int rateValue = lo + (hi << 16);
//Debug.WriteLine("lo=" + lo.ToString() + " hi=" + hi.ToString() + " rateValue=" + rateValue.ToString("X"));
MmResult result;
lock (lockObject)
{
result = WaveInterop.waveOutSetPlaybackRate(hWaveOut, rateValue);
}
MmException.Try(result, "waveOutSetPlaybackRate");
}
/// <summary>
/// Creates a cue list from the cue RIFF chunk and the list RIFF chunk
/// </summary>
/// <param name="cueChunkData">The data contained in the cue chunk</param>
/// <param name="listChunkData">The data contained in the list chunk</param>
internal CueList(byte[] cueChunkData, byte[] listChunkData)
{
int cueCount = BitConverter.ToInt32(cueChunkData, 0);
Dictionary <int, int> cueIndex = new Dictionary <int, int>();
int[] positions = new int[cueCount];
int cue = 0;
for (int p = 4; cueChunkData.Length - p >= 24; p += 24, cue++)
{
cueIndex[BitConverter.ToInt32(cueChunkData, p)] = cue;
positions[cue] = BitConverter.ToInt32(cueChunkData, p + 20);
}
string[] labels = new string[cueCount];
int labelLength = 0;
int cueID = 0;
Int32 labelChunkID = WaveInterop.mmioStringToFOURCC("labl", 0);
for (int p = 4; listChunkData.Length - p >= 16; p += labelLength + labelLength % 2 + 12)
{
if (BitConverter.ToInt32(listChunkData, p) == labelChunkID)
{
labelLength = BitConverter.ToInt32(listChunkData, p + 4) - 4;
cueID = BitConverter.ToInt32(listChunkData, p + 8);
cue = cueIndex[cueID];
labels[cue] = Encoding.Default.GetString(listChunkData, p + 12, labelLength - 1);
}
}
for (int i = 0; i < cueCount; i++)
{
cues.Add(new Cue(positions[i], labels[i]));
}
}
// made non-static so that playing can be stopped here
private void Callback(IntPtr hWaveOut, WaveInterop.WaveMessage uMsg, IntPtr dwInstance, WaveHeader wavhdr, IntPtr dwReserved)
{
if (uMsg == WaveInterop.WaveMessage.WaveOutDone)
{
GCHandle hBuffer = (GCHandle)wavhdr.userData;
WaveOutBuffer buffer = (WaveOutBuffer)hBuffer.Target;
Interlocked.Decrement(ref queuedBuffers);
// check that we're not here through pressing stop
if (PlaybackState == PlaybackState.Playing)
{
// to avoid deadlocks in Function callback mode,
// we lock round this whole thing, which will include the
// reading from the stream.
// this protects us from calling waveOutReset on another
// thread while a WaveOutWrite is in progress
lock (waveOutLock)
{
if (buffer.OnDone())
{
Interlocked.Increment(ref queuedBuffers);
}
}
}
if (queuedBuffers == 0)
{
if (callbackInfo.Strategy == WaveCallbackStrategy.FunctionCallback && playbackState == Wave.PlaybackState.Stopped)
{
// the user has pressed stop
// DO NOT raise the playback stopped event from here
// since on the main thread we are still in the waveOutReset function
// Playback stopped will be raised elsewhere
}
else
{
RaisePlaybackStoppedEvent();
}
}
// n.b. this was wrapped in an exception handler, but bug should be fixed now
}
}
/// <summary>
/// Called when we get a new buffer of recorded data
/// </summary>
private void Callback(IntPtr waveInHandle, WaveInterop.WaveMessage message, IntPtr userData, WaveHeader waveHeader, IntPtr reserved)
{
if (message == WaveInterop.WaveMessage.WaveInData)
{
GCHandle hBuffer = (GCHandle)waveHeader.userData;
WaveInBuffer buffer = (WaveInBuffer)hBuffer.Target;
Exception exception = null;
if (DataAvailable != null)
{
DataAvailable(this, new WaveInEventArgs(buffer.Data, buffer.BytesRecorded));
}
if (recording)
{
try
{
buffer.Reuse();
}
catch (Exception e)
{
recording = false;
exception = e;
}
}
if (!recording)
{
RaiseRecordingStopped(exception);
}
}
}
/// <summary>
/// Reads the header part of a WAV file from a stream
/// </summary>
/// <param name="stream">The stream, positioned at the start of audio data</param>
/// <param name="format">The format found</param>
/// <param name="dataChunkPosition">The position of the data chunk</param>
/// <param name="dataChunkLength">The length of the data chunk</param>
/// <param name="chunks">Additional chunks found</param>
public static void ReadWaveHeader(Stream stream, out WaveFormat format, out long dataChunkPosition, out int dataChunkLength, List <RiffChunk> chunks)
{
dataChunkPosition = -1;
format = null;
BinaryReader br = new BinaryReader(stream);
if (br.ReadInt32() != WaveInterop.mmioStringToFOURCC("RIFF", 0))
{
throw new FormatException("Not a WAVE file - no RIFF header");
}
uint fileSize = br.ReadUInt32(); // read the file size (minus 8 bytes)
if (br.ReadInt32() != WaveInterop.mmioStringToFOURCC("WAVE", 0))
{
throw new FormatException("Not a WAVE file - no WAVE header");
}
int dataChunkID = WaveInterop.mmioStringToFOURCC("data", 0);
int formatChunkId = WaveInterop.mmioStringToFOURCC("fmt ", 0);
dataChunkLength = 0;
// sometimes a file has more data than is specified after the RIFF header
long stopPosition = Math.Min(fileSize + 8, stream.Length);
// this -8 is so we can be sure that there are at least 8 bytes for a chunk id and length
while (stream.Position <= stopPosition - 8)
{
Int32 chunkIdentifier = br.ReadInt32();
Int32 chunkLength = br.ReadInt32();
if (chunkIdentifier == dataChunkID)
{
dataChunkPosition = stream.Position;
dataChunkLength = chunkLength;
stream.Position += chunkLength;
}
else if (chunkIdentifier == formatChunkId)
{
format = WaveFormat.FromFormatChunk(br, chunkLength);
}
else
{
// check for invalid chunk length
if (chunkLength < 0 || chunkLength > stream.Length - stream.Position)
{
Debug.Assert(false, String.Format("Invalid chunk length {0}, pos: {1}. length: {2}",
chunkLength, stream.Position, stream.Length));
// an exception will be thrown further down if we haven't got a format and data chunk yet,
// otherwise we will tolerate this file despite it having corrupt data at the end
break;
}
if (chunks != null)
{
chunks.Add(new RiffChunk(chunkIdentifier, chunkLength, stream.Position));
}
stream.Position += chunkLength;
}
}
if (format == null)
{
throw new FormatException("Invalid WAV file - No fmt chunk found");
}
if (dataChunkPosition == -1)
{
throw new FormatException("Invalid WAV file - No data chunk found");
}
}
public WaveWindow(WaveInterop.WaveCallback waveCallback)
{
this.waveCallback = waveCallback;
}
/// <summary>
/// Place this buffer back to record more audio
/// </summary>
// Token: 0x06000BA5 RID: 2981 RVA: 0x00022DDC File Offset: 0x00020FDC
public void Reuse()
{
MmException.Try(WaveInterop.waveInUnprepareHeader(this.waveInHandle, this.header, Marshal.SizeOf(this.header)), "waveUnprepareHeader");
MmException.Try(WaveInterop.waveInPrepareHeader(this.waveInHandle, this.header, Marshal.SizeOf(this.header)), "waveInPrepareHeader");
MmException.Try(WaveInterop.waveInAddBuffer(this.waveInHandle, this.header, Marshal.SizeOf(this.header)), "waveInAddBuffer");
}
// made non-static so that playing can be stopped here
private void Callback(IntPtr hWaveOut, WaveInterop.WaveMessage uMsg, IntPtr dwInstance, WaveHeader wavhdr, IntPtr dwReserved)
{
if (uMsg == WaveInterop.WaveMessage.WaveOutDone)
{
GCHandle hBuffer = (GCHandle)wavhdr.userData;
WaveOutBuffer buffer = (WaveOutBuffer)hBuffer.Target;
Interlocked.Decrement(ref queuedBuffers);
Exception exception = null;
// check that we're not here through pressing stop
if (PlaybackState == PlaybackState.Playing)
{
// to avoid deadlocks in Function callback mode,
// we lock round this whole thing, which will include the
// reading from the stream.
// this protects us from calling waveOutReset on another
// thread while a WaveOutWrite is in progress
lock (waveOutLock)
{
try
{
if (buffer.OnDone())
{
Interlocked.Increment(ref queuedBuffers);
}
}
catch (Exception e)
{
// one likely cause is soundcard being unplugged
exception = e;
}
}
}
if (queuedBuffers == 0)
{
if (callbackInfo.Strategy == WaveCallbackStrategy.FunctionCallback && playbackState == Wave.PlaybackState.Stopped)
{
// the user has pressed stop
// DO NOT raise the playback stopped event from here
// since on the main thread we are still in the waveOutReset function
// Playback stopped will be raised elsewhere
}
else
{
playbackState = PlaybackState.Stopped; // set explicitly for when we reach the end of the audio
RaisePlaybackStoppedEvent(exception);
}
}
}
}
/// <summary>
/// Called when we get a new buffer of recorded data
/// </summary>
private void Callback(IntPtr waveInHandle, WaveInterop.WaveMessage message, IntPtr userData, WaveHeader waveHeader, IntPtr reserved)
{
if (message == WaveInterop.WaveMessage.WaveInData)
{
var hBuffer = (GCHandle)waveHeader.userData;
var buffer = (WaveInBuffer)hBuffer.Target;
if (recording)
{
lastReturnedBufferIndex = Array.IndexOf(buffers, buffer);
RaiseDataAvailable(buffer);
try
{
buffer.Reuse();
}
catch (Exception e)
{
recording = false;
RaiseRecordingStopped(e);
}
}
}
}
/// <summary>
/// Stop recording
/// </summary>
public void StopRecording()
{
recording = false;
this.callbackEvent.Set(); // signal the thread to exit
MmException.Try(WaveInterop.waveInStop(waveInHandle), "waveInStop");
}
private void SetVolume(int stereoVolume)
{
MmException.Try(WaveInterop.waveOutSetVolume(hWaveOut, stereoVolume), "waveOutSetVolume");
}
// made non-static so that playing can be stopped here
private void Callback(IntPtr hWaveOut, WaveInterop.WaveMessage uMsg, IntPtr dwInstance, WaveHeader wavhdr, IntPtr dwReserved)
{
if (uMsg == WaveInterop.WaveMessage.WaveOutDone)
{
GCHandle hBuffer = (GCHandle)wavhdr.userData;
WaveOutBuffer buffer = (WaveOutBuffer)hBuffer.Target;
// check that we're not here through pressing stop
if (PlaybackState == PlaybackState.Playing)
{
if(!buffer.OnDone())
{
playbackState = PlaybackState.Stopped;
RaisePlaybackStoppedEvent();
}
}
// n.b. this was wrapped in an exception handler, but bug should be fixed now
}
}
public void StopRecording()
{
this.recording = false;
this.callbackEvent.Set();
MmException.Try(WaveInterop.waveInStop(this.waveInHandle), "waveInStop");
}
// made non-static so that playing can be stopped here
private void Callback(IntPtr hWaveOut, WaveInterop.WaveMessage uMsg, Int32 dwUser, WaveHeader wavhdr, int dwReserved)
{
if (uMsg == WaveInterop.WaveMessage.WaveOutDone)
{
// check that we're not here through pressing stop
GCHandle hBuffer = (GCHandle)wavhdr.userData;
WaveOutBuffer buffer = (WaveOutBuffer)hBuffer.Target;
lock(actionQueue)
{
actionQueue.Enqueue(new WaveOutAction(WaveOutFunction.BufferDone,buffer));
workAvailable.Set();
}
// n.b. this was wrapped in an exception handler, but bug should be fixed now
}
}
