private void InitializeInternal()
{
_audioClient = AudioClient.FromMMDevice(Device);
_outputFormat = SetupWaveFormat(_source.WaveFormat, _audioClient);
long latency = _latency * 10000;
if (!_eventSync)
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.None, latency, 0, _outputFormat, Guid.Empty);
}
else //event sync
{
if (_shareMode == AudioClientShareMode.Exclusive) //exclusive
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlags_EventCallback, latency, latency, _outputFormat, Guid.Empty);
}
else //shared
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlags_EventCallback, 0, 0, _outputFormat, Guid.Empty);
_latency = (int)(_audioClient.StreamLatency / 10000);
}
_eventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
_audioClient.SetEventHandle(_eventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
_renderClient = AudioRenderClient.FromAudioClient(_audioClient);
_simpleAudioVolume = SimpleAudioVolume.FromAudioClient(_audioClient);
_simpleAudioVolume.MasterVolume = 1f;
}
private void InitializeInternal()
{
var defaultFormat = _waveFormat;
_audioClient = AudioClient.FromMMDevice(Device);
/*if (_shareMode == AudioClientShareMode.Exclusive)
* {
* _waveFormat = _waveFormat ?? _audioClient.MixFormat;
* }
* else
* {
* _waveFormat = _waveFormat ?? _audioClient.MixFormat;
* }*/
_waveFormat = _waveFormat ?? _audioClient.MixFormat;
_waveFormat = SetupWaveFormat(_waveFormat, _audioClient);
if (!_eventSync)
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.None | GetStreamFlags(), _latency * ReftimesPerMillisecond, 0, _waveFormat, Guid.Empty);
}
else
{
if (_shareMode == AudioClientShareMode.Exclusive)
{
try
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlagsEventCallback | GetStreamFlags(), _latency * ReftimesPerMillisecond, _latency * ReftimesPerMillisecond, _waveFormat, Guid.Empty);
}
catch (CoreAudioAPIException e)
{
if (e.ErrorCode == unchecked ((int)0x88890019)) //AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED
{
int bufferSize = _audioClient.BufferSize;
_audioClient.Dispose();
long hnsRequestedDuration = (long)(((double)ReftimesPerMillisecond * 1000 / _waveFormat.SampleRate * bufferSize) + 0.5);
_audioClient = AudioClient.FromMMDevice(Device);
if (defaultFormat == null)
{
_waveFormat = _audioClient.MixFormat;
}
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlagsEventCallback | GetStreamFlags(), hnsRequestedDuration, hnsRequestedDuration, _waveFormat, Guid.Empty);
}
}
}
else
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlagsEventCallback | GetStreamFlags(), 0, 0, _waveFormat, Guid.Empty);
_latency = (int)(_audioClient.StreamLatency / ReftimesPerMillisecond);
}
_eventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
_audioClient.SetEventHandle(_eventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
_audioCaptureClient = AudioCaptureClient.FromAudioClient(_audioClient);
}
private void InitializeInternal()
{
const int reftimesPerMillisecond = 10000;
_audioClient = AudioClient.FromMMDevice(Device);
_outputFormat = SetupWaveFormat(_source, _audioClient);
long latency = _latency * reftimesPerMillisecond;
AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED_TRY_AGAIN:
try
{
if (!_eventSync)
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.None, latency, 0, _outputFormat,
Guid.Empty);
}
else //event sync
{
if (_shareMode == AudioClientShareMode.Exclusive) //exclusive
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlagsEventCallback, latency,
latency, _outputFormat, Guid.Empty);
}
else //shared
{
_audioClient.Initialize(_shareMode, AudioClientStreamFlags.StreamFlagsEventCallback, 0, 0,
_outputFormat, Guid.Empty);
//latency = (int)(_audioClient.StreamLatency / reftimesPerMillisecond);
}
}
}
catch (CoreAudioAPIException exception)
{
if (exception.ErrorCode == unchecked ((int)0x88890019)) //AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED
{
const long reftimesPerSec = 10000000;
int framesInBuffer = _audioClient.GetBufferSize();
// ReSharper disable once PossibleLossOfFraction
latency = (int)(reftimesPerSec * framesInBuffer / _outputFormat.SampleRate + 0.5);
goto AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED_TRY_AGAIN;
}
throw;
}
if (_audioClient.StreamLatency != 0) //windows 10 returns zero, got no idea why => https://github.com/filoe/cscore/issues/11
{
Latency = (int)(_audioClient.StreamLatency / reftimesPerMillisecond);
}
if (_eventSync)
{
_eventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
_audioClient.SetEventHandle(_eventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
_renderClient = AudioRenderClient.FromAudioClient(_audioClient);
}
private void InitializeCaptureDevice()
{
if (initialized)
{
return;
}
long requestedDuration = REFTIMES_PER_MILLISEC * 100;
if (!audioClient.IsFormatSupported(ShareMode, waveFormat))
{
throw new ArgumentException("Unsupported Wave Format");
}
var streamFlags = GetAudioClientStreamFlags();
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
// Init Shared or Exclusive
if (ShareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0
audioClient.Initialize(ShareMode, AudioClientStreamFlags.EventCallback, requestedDuration, 0,
this.waveFormat, Guid.Empty);
}
else
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(ShareMode, AudioClientStreamFlags.EventCallback, requestedDuration, requestedDuration,
this.waveFormat, Guid.Empty);
}
// Create the Wait Event Handle
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(ShareMode,
streamFlags,
requestedDuration,
0,
this.waveFormat,
Guid.Empty);
}
int bufferFrameCount = audioClient.BufferSize;
this.bytesPerFrame = this.waveFormat.Channels * this.waveFormat.BitsPerSample / 8;
this.recordBuffer = new byte[bufferFrameCount * bytesPerFrame];
Debug.WriteLine(string.Format("record buffer size = {0}", this.recordBuffer.Length));
initialized = true;
}
/// <summary>
/// Initialize for playing the specified wave stream
/// </summary>
/// <param name="waveProvider">IWaveProvider to play</param>
public void Initialize(IWaveProvider waveProvider)
{
long latencyRefTimes = latencyMilliseconds * 10000;
outputFormat = waveProvider.WaveFormat;
var approFormat = audioClient.CheckSupportFormat(shareMode, outputFormat); // 規定フォーマットが対応しているかどうかのCheck.
if (approFormat != null)
{
// 対応していない場合は、システムから提示のあった近似フォーマットで再度確認する。
if (!audioClient.IsFormatSupported(shareMode, approFormat))
{
throw new ArgumentException("Unsupported Wave Format");
}
outputFormat = approFormat;
}
//audioClient.Initialize(shareMode, EAudioClientStreamFlags.None, 1000000, 0, outputFormat, Guid.Empty);
//ResamplerStream = new ResamplerDmoStream(waveProvider, outputFormat);
//this.sourceProvider = ResamplerStream;
//this.sourceProvider = waveProvider;
this.sourceProvider = new ResampleWaveProvider(waveProvider, outputFormat);
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
// Init Shared or Exclusive
if (shareMode == EAudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0
audioClient.Initialize(shareMode, EAudioClientStreamFlags.EventCallback, 0, 0, outputFormat, Guid.Empty);
// Get back the effective latency from AudioClient
latencyMilliseconds = (int)(audioClient.StreamLatency / 10000);
}
else
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(shareMode, EAudioClientStreamFlags.EventCallback, latencyRefTimes, latencyRefTimes, outputFormat, Guid.Empty);
}
// Create the Wait Event Handle
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle);
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(shareMode, EAudioClientStreamFlags.None, latencyRefTimes, 0, outputFormat, Guid.Empty);
}
Debug.WriteLine(string.Format("RenderAudioClient: {0}", audioClient.ToString()));
// Get the RenderClient
renderClient = audioClient.AudioRenderClient;
}
/// <summary>
/// Initialize for playing the specified format
/// </summary>
private void Init()
{
if (inited)
{
return;
}
long latencyRefTimes = latencyMilliseconds * 10000;
// first attempt uses the WaveFormat from the WaveStream
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
// Init Shared or Exclusive
if (shareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, 0,
outputFormat, Guid.Empty);
// Get back the effective latency from AudioClient
// This is all wrong! it should be treated differently
// latencyMilliseconds = (int)(audioClient.StreamLatency / 10000);
}
else
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, latencyRefTimes,
outputFormat, Guid.Empty);
}
// Create the Wait Event Handle
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle);
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(shareMode, AudioClientStreamFlags.None, latencyRefTimes, 0,
outputFormat, Guid.Empty);
}
waitHandles = new WaitHandle[] { frameEventWaitHandle };
// Get the RenderClient
renderClient = audioClient.AudioRenderClient;
inited = true;
}
private void InitializeCaptureDevice()
{
if (isInitialized)
{
return;
}
long requestedDuration = REFTIMES_PER_MILLISEC * 100;
var streamFlags = GetAudioClientStreamFlags();
var shareMode = EAudioClientShareMode.Shared;
var approFormat = audioClient.CheckSupportFormat(shareMode, WaveFormat); // 規定フォーマットが対応しているかどうかのCheck.
if (approFormat != null)
{
// 対応していない場合は、システムから提示のあった近似フォーマットで再度確認する。
if (!audioClient.IsFormatSupported(shareMode, approFormat))
{
throw new ArgumentException("Unsupported Wave Format");
}
// 近似フォーマットを採用して続行。
WaveFormat = approFormat;
}
audioClient.Initialize(
shareMode,
streamFlags,
requestedDuration,
0,
WaveFormat,
Guid.Empty);
Debug.WriteLine(string.Format("CaptureAudioClient: {0}", audioClient.ToString()));
var bufferFrameCount = audioClient.BufferSize;
this.bytesPerFrame = this.WaveFormat.Channels * this.WaveFormat.BitsPerSample / 8;
this.recordBuffer = new byte[bufferFrameCount * bytesPerFrame];
Debug.WriteLine(string.Format("record buffer size = {0}", this.recordBuffer.Length));
//WaveProvider = new InnerWaveProvider(this);
waveProvider = new BufferedWaveProvider(WaveFormat);
//waveProvider = new ResampleWaveProvider(WaveFormat, WaveFormat);
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle);
isInitialized = true;
}
/// <summary>
/// Initializes the capture device. Must be called on the UI (STA) thread.
/// If not called manually then StartRecording() will call it internally.
/// </summary>
public async Task InitAsync()
{
if (captureState == WasapiCaptureState.Disposed)
{
throw new ObjectDisposedException(nameof(WasapiCaptureRT));
}
if (captureState != WasapiCaptureState.Uninitialized)
{
throw new InvalidOperationException("Already initialized");
}
/* var icbh = new ActivateAudioInterfaceCompletionHandler(ac2 => InitializeCaptureDevice((IAudioClient)ac2));
* IActivateAudioInterfaceAsyncOperation activationOperation;
* // must be called on UI thread
* NativeMethods.ActivateAudioInterfaceAsync(device, IID_IAudioClient2, IntPtr.Zero, icbh, out activationOperation);
*
* audioClient = new AudioClient((IAudioClient)(await icbh));
*
* hEvent = NativeMethods.CreateEventExW(IntPtr.Zero, IntPtr.Zero, 0, EventAccess.EVENT_ALL_ACCESS);
* audioClient.SetEventHandle(hEvent);*/
var icbh = new ActivateAudioInterfaceCompletionHandler(ac2 =>
{
if (this.audioClientProperties != null)
{
IntPtr p = Marshal.AllocHGlobal(Marshal.SizeOf(this.audioClientProperties.Value));
Marshal.StructureToPtr(this.audioClientProperties.Value, p, false);
ac2.SetClientProperties(p);
Marshal.FreeHGlobal(p);
// TODO: consider whether we can marshal this without the need for AllocHGlobal
}
InitializeCaptureDevice((IAudioClient2)ac2);
audioClient = new AudioClient((IAudioClient2)ac2);
hEvent = NativeMethods.CreateEventExW(IntPtr.Zero, IntPtr.Zero, 0, EventAccess.EVENT_ALL_ACCESS);
audioClient.SetEventHandle(hEvent);
});
IActivateAudioInterfaceAsyncOperation activationOperation;
// must be called on UI thread
NativeMethods.ActivateAudioInterfaceAsync(device, IID_IAudioClient2, IntPtr.Zero, icbh, out activationOperation);
await icbh;
captureState = WasapiCaptureState.Stopped;
}
/// <summary>
/// Initializes the capture device. Must be called on the UI (STA) thread.
/// If not called manually then StartRecording() will call it internally.
/// </summary>
public async Task InitAsync()
{
if (captureState == WasapiCaptureState.Disposed)
{
throw new ObjectDisposedException(nameof(WasapiCaptureRT));
}
if (captureState != WasapiCaptureState.Uninitialized)
{
throw new InvalidOperationException("Already initialized");
}
var icbh = new ActivateAudioInterfaceCompletionHandler(ac2 => InitializeCaptureDevice((IAudioClient)ac2));
IActivateAudioInterfaceAsyncOperation activationOperation;
// must be called on UI thread
NativeMethods.ActivateAudioInterfaceAsync(device, IID_IAudioClient2, IntPtr.Zero, icbh, out activationOperation);
audioClient = new AudioClient((IAudioClient)(await icbh));
hEvent = NativeMethods.CreateEventExW(IntPtr.Zero, IntPtr.Zero, 0, EventAccess.EVENT_ALL_ACCESS);
audioClient.SetEventHandle(hEvent);
captureState = WasapiCaptureState.Stopped;
}
/// <summary>
/// Initialize for playing the specified wave stream
/// </summary>
private IWaveProvider Init()
{
var waveProvider = waveProviderFunc();
long latencyRefTimes = latencyMilliseconds * 10000;
outputFormat = waveProvider.WaveFormat;
// first attempt uses the WaveFormat from the WaveStream
WaveFormatExtensible closestSampleRateFormat;
if (!audioClient.IsFormatSupported(shareMode, outputFormat, out closestSampleRateFormat))
{
// Use closesSampleRateFormat (in sharedMode, it equals usualy to the audioClient.MixFormat)
// See documentation : http://msdn.microsoft.com/en-us/library/ms678737(VS.85).aspx
// They say : "In shared mode, the audio engine always supports the mix format"
// The MixFormat is more likely to be a WaveFormatExtensible.
if (closestSampleRateFormat == null)
{
WaveFormat correctSampleRateFormat = audioClient.MixFormat;
/*WaveFormat.CreateIeeeFloatWaveFormat(
* audioClient.MixFormat.SampleRate,
* audioClient.MixFormat.Channels);*/
if (!audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
// Iterate from Worst to Best Format
WaveFormatExtensible[] bestToWorstFormats =
{
new WaveFormatExtensible(
outputFormat.SampleRate, 32,
outputFormat.Channels),
new WaveFormatExtensible(
outputFormat.SampleRate, 24,
outputFormat.Channels),
new WaveFormatExtensible(
outputFormat.SampleRate, 16,
outputFormat.Channels),
};
// Check from best Format to worst format ( Float32, Int24, Int16 )
for (int i = 0; i < bestToWorstFormats.Length; i++)
{
correctSampleRateFormat = bestToWorstFormats[i];
if (audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
break;
}
correctSampleRateFormat = null;
}
// If still null, then test on the PCM16, 2 channels
if (correctSampleRateFormat == null)
{
// Last Last Last Chance (Thanks WASAPI)
correctSampleRateFormat = new WaveFormatExtensible(outputFormat.SampleRate, 16, 2);
if (!audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
throw new NotSupportedException("Can't find a supported format to use");
}
}
}
outputFormat = correctSampleRateFormat;
}
else
{
outputFormat = closestSampleRateFormat;
}
// just check that we can make it.
//using (new MediaFoundationResampler(waveProvider, outputFormat))
{
}
this.resamplerNeeded = true;
}
else
{
resamplerNeeded = false;
}
// Init Shared or Exclusive
if (shareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared,
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, 0,
outputFormat, Guid.Empty);
// Get back the effective latency from AudioClient. On Windows 10 it can be 0
if (audioClient.StreamLatency > 0)
{
latencyMilliseconds = (int)(audioClient.StreamLatency / 10000);
}
}
else
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, latencyRefTimes,
outputFormat, Guid.Empty);
}
// Create the Wait Event Handle
frameEventWaitHandle = NativeMethods.CreateEventExW(IntPtr.Zero, IntPtr.Zero, 0, EventAccess.EVENT_ALL_ACCESS);
audioClient.SetEventHandle(frameEventWaitHandle);
// Get the RenderClient
renderClient = audioClient.AudioRenderClient;
return(waveProvider);
}
private void DoRecording(AudioClient client)
{
Debug.WriteLine(client.BufferSize);
var buf = new Byte[client.BufferSize * bytesPerFrame];
int bufLength = 0;
int minPacketSize = waveFormat.AverageBytesPerSecond / 100; //100ms
IntPtr hEvent = NativeMethods.CreateEventEx(IntPtr.Zero, IntPtr.Zero, 0, EventAccess.EVENT_ALL_ACCESS);
client.SetEventHandle(hEvent);
try
{
AudioCaptureClient capture = client.AudioCaptureClient;
client.Start();
int packetSize = capture.GetNextPacketSize();
while (!this.stop)
{
IntPtr pData = IntPtr.Zero;
int numFramesToRead = 0;
AudioClientBufferFlags dwFlags = 0;
if (packetSize == 0)
{
if (NativeMethods.WaitForSingleObjectEx(hEvent, 100, true) != 0)
{
throw new Exception("Capture event timeout");
}
}
pData = capture.GetBuffer(out numFramesToRead, out dwFlags);
if ((int)(dwFlags & AudioClientBufferFlags.Silent) > 0)
{
pData = IntPtr.Zero;
}
if (numFramesToRead == 0)
{
continue;
}
int capturedBytes = numFramesToRead * bytesPerFrame;
System.Runtime.InteropServices.Marshal.Copy(pData, buf, bufLength, capturedBytes);
bufLength += capturedBytes;
capture.ReleaseBuffer(numFramesToRead);
if (bufLength >= minPacketSize)
{
if (DataAvailable != null)
{
DataAvailable(this, new WaveInEventArgs(buf, bufLength));
}
bufLength = 0;
}
packetSize = capture.GetNextPacketSize();
}
}
catch (Exception ex)
{
RaiseRecordingStopped(ex);
Debug.WriteLine("stop wasapi");
}
finally
{
RaiseRecordingStopped(null);
NativeMethods.CloseHandle(hEvent);
client.Stop();
client.Dispose();
}
}
/// <summary>
/// Initialize for playing the specified wave stream
/// </summary>
/// <param name="waveProvider">IWaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
long latencyRefTimes = latencyMilliseconds * 10000;
outputFormat = waveProvider.WaveFormat;
// first attempt uses the WaveFormat from the WaveStream
WaveFormatExtensible closestSampleRateFormat;
if (!audioClient.IsFormatSupported(shareMode, outputFormat, out closestSampleRateFormat))
{
// Use closesSampleRateFormat (in sharedMode, it equals usualy to the audioClient.MixFormat)
// See documentation : http://msdn.microsoft.com/en-us/library/ms678737(VS.85).aspx
// They say : "In shared mode, the audio engine always supports the mix format"
// The MixFormat is more likely to be a WaveFormatExtensible.
if (closestSampleRateFormat == null)
{
outputFormat = GetFallbackFormat();
}
else
{
outputFormat = closestSampleRateFormat;
}
try
{
// just check that we can make it.
using (new ResamplerDmoStream(waveProvider, outputFormat))
{
}
}
catch (Exception)
{
// On Windows 10 some poorly coded drivers return a bad format in to closestSampleRateFormat
// In that case, try and fallback as if it provided no closest (e.g. force trying the mix format)
outputFormat = GetFallbackFormat();
using (new ResamplerDmoStream(waveProvider, outputFormat))
{
}
}
dmoResamplerNeeded = true;
}
else
{
dmoResamplerNeeded = false;
}
sourceProvider = waveProvider;
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
// Init Shared or Exclusive
if (shareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0 (update - not sure this is true anymore)
//
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, 0,
outputFormat, Guid.Empty);
// Windows 10 returns 0 from stream latency, resulting in maxing out CPU usage later
var streamLatency = audioClient.StreamLatency;
if (streamLatency != 0)
{
// Get back the effective latency from AudioClient
latencyMilliseconds = (int)(streamLatency / 10000);
}
}
else
{
try
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, latencyRefTimes,
outputFormat, Guid.Empty);
}
catch (COMException ex)
{
// Starting with Windows 7, Initialize can return AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED for a render device.
// We should to initialize again.
if (ex.ErrorCode != ErrorCodes.AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED)
{
throw ex;
}
// Calculate the new latency.
long newLatencyRefTimes = (long)(10000000.0 /
(double)this.outputFormat.SampleRate *
(double)this.audioClient.BufferSize + 0.5);
this.audioClient.Dispose();
this.audioClient = this.mmDevice.AudioClient;
this.audioClient.Initialize(this.shareMode, AudioClientStreamFlags.EventCallback,
newLatencyRefTimes, newLatencyRefTimes, this.outputFormat, Guid.Empty);
}
}
// Create the Wait Event Handle
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(shareMode, AudioClientStreamFlags.None, latencyRefTimes, 0,
outputFormat, Guid.Empty);
}
// Get the RenderClient
renderClient = audioClient.AudioRenderClient;
}
/// <summary>
/// Initialize for playing the specified wave stream
/// </summary>
/// <param name="waveProvider">IWaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
long latencyRefTimes = latencyMilliseconds * 10000;
outputFormat = waveProvider.WaveFormat;
// first attempt uses the WaveFormat from the WaveStream
WaveFormatExtensible closestSampleRateFormat;
if (!audioClient.IsFormatSupported(shareMode, outputFormat, out closestSampleRateFormat))
{
// Use closesSampleRateFormat (in sharedMode, it equals usualy to the audioClient.MixFormat)
// See documentation : http://msdn.microsoft.com/en-us/library/ms678737(VS.85).aspx
// They say : "In shared mode, the audio engine always supports the mix format"
// The MixFormat is more likely to be a WaveFormatExtensible.
if (closestSampleRateFormat == null)
{
WaveFormat correctSampleRateFormat = audioClient.MixFormat;
/*WaveFormat.CreateIeeeFloatWaveFormat(
* audioClient.MixFormat.SampleRate,
* audioClient.MixFormat.Channels);*/
if (!audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
// Iterate from Worst to Best Format
WaveFormatExtensible[] bestToWorstFormats =
{
new WaveFormatExtensible(
outputFormat.SampleRate, 32,
outputFormat.Channels),
new WaveFormatExtensible(
outputFormat.SampleRate, 24,
outputFormat.Channels),
new WaveFormatExtensible(
outputFormat.SampleRate, 16,
outputFormat.Channels),
};
// Check from best Format to worst format ( Float32, Int24, Int16 )
for (int i = 0; i < bestToWorstFormats.Length; i++)
{
correctSampleRateFormat = bestToWorstFormats[i];
if (audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
break;
}
correctSampleRateFormat = null;
}
// If still null, then test on the PCM16, 2 channels
if (correctSampleRateFormat == null)
{
// Last Last Last Chance (Thanks WASAPI)
correctSampleRateFormat = new WaveFormatExtensible(outputFormat.SampleRate, 16, 2);
if (!audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
throw new NotSupportedException("Can't find a supported format to use");
}
}
}
outputFormat = correctSampleRateFormat;
}
else
{
outputFormat = closestSampleRateFormat;
}
// just check that we can make it.
using (new ResamplerDmoStream(waveProvider, outputFormat))
{
}
dmoResamplerNeeded = true;
}
else
{
dmoResamplerNeeded = false;
}
sourceProvider = waveProvider;
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
// Init Shared or Exclusive
if (shareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0 (update - not sure this is true anymore)
//
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, 0,
outputFormat, Guid.Empty);
// Windows 10 returns 0 from stream latency, resulting in maxing out CPU usage later
var streamLatency = audioClient.StreamLatency;
if (streamLatency != 0)
{
// Get back the effective latency from AudioClient
latencyMilliseconds = (int)(streamLatency / 10000);
}
}
else
{
try
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, latencyRefTimes,
outputFormat, Guid.Empty);
}
catch (COMException ex)
{
// Starting with Windows 7, Initialize can return AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED for a render device.
// We should to initialize again.
if (ex.ErrorCode != ErrorCodes.AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED)
{
throw ex;
}
// Calculate the new latency.
long newLatencyRefTimes = (long)(10000000.0 /
(double)this.outputFormat.SampleRate *
(double)this.audioClient.BufferSize + 0.5);
this.audioClient.Dispose();
this.audioClient = this.mmDevice.AudioClient;
this.audioClient.Initialize(this.shareMode, AudioClientStreamFlags.EventCallback,
newLatencyRefTimes, newLatencyRefTimes, this.outputFormat, Guid.Empty);
}
}
// Create the Wait Event Handle
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(shareMode, AudioClientStreamFlags.None, latencyRefTimes, 0,
outputFormat, Guid.Empty);
}
// Get the RenderClient
renderClient = audioClient.AudioRenderClient;
}
/// <summary>
/// Initialize for playing the specified wave stream
/// </summary>
/// <param name="waveProvider">IWaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
long latencyRefTimes = latencyMilliseconds * 10000;
outputFormat = waveProvider.WaveFormat;
// first attempt uses the WaveFormat from the WaveStream
WaveFormatExtensible closestSampleRateFormat;
if (!audioClient.IsFormatSupported(shareMode, outputFormat, out closestSampleRateFormat))
{
// Use closesSampleRateFormat (in sharedMode, it equals usualy to the audioClient.MixFormat)
// See documentation : http://msdn.microsoft.com/en-us/library/ms678737(VS.85).aspx
// They say : "In shared mode, the audio engine always supports the mix format"
// The MixFormat is more likely to be a WaveFormatExtensible.
if (closestSampleRateFormat == null)
{
outputFormat = GetFallbackFormat();
}
else
{
outputFormat = closestSampleRateFormat;
}
if (!windowsN)
{
try
{
// just check that we can make it.
using (new ResamplerDmoStream(waveProvider, outputFormat))
{
}
}
catch (Exception)
{
// On Windows 10 some poorly coded drivers return a bad format in to closestSampleRateFormat
// In that case, try and fallback as if it provided no closest (e.g. force trying the mix format)
outputFormat = GetFallbackFormat();
try
{
using (new ResamplerDmoStream(waveProvider, outputFormat))
{
}
}
catch (Exception)
{
//still something wrong - assume windows N and DMO is broken in some way
windowsN = true;
}
}
}
dmoResamplerNeeded = true;
}
else
{
dmoResamplerNeeded = false;
}
sourceProvider = waveProvider;
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
// Init Shared or Exclusive
if (shareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0 (update - not sure this is true anymore)
//
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, 0,
outputFormat, Guid.Empty);
// Windows 10 returns 0 from stream latency, resulting in maxing out CPU usage later
var streamLatency = audioClient.StreamLatency;
if (streamLatency != 0)
{
// Get back the effective latency from AudioClient
latencyMilliseconds = (int)(streamLatency / 10000);
}
}
else
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, latencyRefTimes,
outputFormat, Guid.Empty);
}
// Create the Wait Event Handle
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(shareMode, AudioClientStreamFlags.None, latencyRefTimes, 0,
outputFormat, Guid.Empty);
}
// Get the RenderClient
renderClient = audioClient.AudioRenderClient;
}
/// <summary>
/// Initialize for playing the specified wave stream
/// </summary>
/// <param name="waveProvider">IWaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
long latencyRefTimes = latencyMilliseconds * 10000;
outputFormat = waveProvider.WaveFormat;
// first attempt uses the WaveFormat from the WaveStream
WaveFormatExtensible closestSampleRateFormat;
if (!audioClient.IsFormatSupported(shareMode, outputFormat, out closestSampleRateFormat))
{
// Use closesSampleRateFormat (in sharedMode, it equals usualy to the audioClient.MixFormat)
// See documentation : http://msdn.microsoft.com/en-us/library/ms678737(VS.85).aspx
// They say : "In shared mode, the audio engine always supports the mix format"
// The MixFormat is more likely to be a WaveFormatExtensible.
if (closestSampleRateFormat == null)
{
WaveFormat correctSampleRateFormat = audioClient.MixFormat;
/*WaveFormat.CreateIeeeFloatWaveFormat(
* audioClient.MixFormat.SampleRate,
* audioClient.MixFormat.Channels);*/
if (!audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
// Iterate from Worst to Best Format
WaveFormatExtensible[] bestToWorstFormats =
{
new WaveFormatExtensible(
outputFormat.SampleRate, 32,
outputFormat.Channels),
new WaveFormatExtensible(
outputFormat.SampleRate, 24,
outputFormat.Channels),
new WaveFormatExtensible(
outputFormat.SampleRate, 16,
outputFormat.Channels),
};
// Check from best Format to worst format ( Float32, Int24, Int16 )
for (int i = 0; i < bestToWorstFormats.Length; i++)
{
correctSampleRateFormat = bestToWorstFormats[i];
if (audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
break;
}
correctSampleRateFormat = null;
}
// If still null and we're using exclusive mode, try to get the device format property.
if (correctSampleRateFormat == null && shareMode == AudioClientShareMode.Exclusive)
{
// Based on https://stackoverflow.com/questions/22616924/wasapi-choosing-a-wave-format-for-exclusive-output
byte[] waveFormatBytes = (byte[])mmDevice.Properties[PropertyKeys.PKEY_AudioEngine_DeviceFormat].Value;
if (waveFormatBytes != null)
{
GCHandle handle = GCHandle.Alloc(waveFormatBytes, GCHandleType.Pinned);
try
{
correctSampleRateFormat = (WaveFormatExtensible)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(WaveFormatExtensible));
}
finally
{
handle.Free();
}
}
}
// If still null, then test on the PCM16, 2 channels
if (correctSampleRateFormat == null)
{
// Last Last Last Chance (Thanks WASAPI)
correctSampleRateFormat = new WaveFormatExtensible(outputFormat.SampleRate, 16, 2);
if (!audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
throw new NotSupportedException("Can't find a supported format to use");
}
}
}
outputFormat = correctSampleRateFormat;
}
else
{
outputFormat = closestSampleRateFormat;
}
// just check that we can make it.
using (new ResamplerDmoStream(waveProvider, outputFormat))
{
}
dmoResamplerNeeded = true;
}
else
{
dmoResamplerNeeded = false;
}
sourceProvider = waveProvider;
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
// Init Shared or Exclusive
if (shareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0 (update - not sure this is true anymore)
//
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, 0,
outputFormat, Guid.Empty);
// Windows 10 returns 0 from stream latency, resulting in maxing out CPU usage later
var streamLatency = audioClient.StreamLatency;
if (streamLatency != 0)
{
// Get back the effective latency from AudioClient
latencyMilliseconds = (int)(streamLatency / 10000);
}
}
else
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, latencyRefTimes,
outputFormat, Guid.Empty);
}
// Create the Wait Event Handle
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(shareMode, AudioClientStreamFlags.None, latencyRefTimes, 0,
outputFormat, Guid.Empty);
}
// Get the RenderClient
renderClient = audioClient.AudioRenderClient;
}
/// <summary>
/// Initialize for playing the specified wave stream
/// </summary>
/// <param name="waveProvider">IWaveProvider to play</param>
public void Init(IWaveProvider waveProvider)
{
long latencyRefTimes = latencyMilliseconds * 10000;
outputFormat = waveProvider.WaveFormat;
// first attempt uses the WaveFormat from the WaveStream
WaveFormatExtensible closestSampleRateFormat;
if (!audioClient.IsFormatSupported(shareMode, outputFormat, out closestSampleRateFormat))
{
// Use closesSampleRateFormat (in sharedMode, it equals usualy to the audioClient.MixFormat)
// See documentation : http://msdn.microsoft.com/en-us/library/ms678737(VS.85).aspx
// They say : "In shared mode, the audio engine always supports the mix format"
// The MixFormat is more likely to be a WaveFormatExtensible.
if (closestSampleRateFormat == null)
{
WaveFormat correctSampleRateFormat = audioClient.MixFormat;
/*WaveFormat.CreateIeeeFloatWaveFormat(
* audioClient.MixFormat.SampleRate,
* audioClient.MixFormat.Channels);*/
if (!audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
// Iterate from Worst to Best Format
WaveFormatExtensible[] bestToWorstFormats =
{
new WaveFormatExtensible(
outputFormat.SampleRate, 32,
outputFormat.Channels),
new WaveFormatExtensible(
outputFormat.SampleRate, 24,
outputFormat.Channels),
new WaveFormatExtensible(
outputFormat.SampleRate, 16,
outputFormat.Channels),
};
// Check from best Format to worst format ( Float32, Int24, Int16 )
for (int i = 0; i < bestToWorstFormats.Length; i++)
{
correctSampleRateFormat = bestToWorstFormats[i];
if (audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
break;
}
correctSampleRateFormat = null;
}
// If still null, then test on the PCM16, 2 channels
if (correctSampleRateFormat == null)
{
// Last Last Last Chance (Thanks WASAPI)
correctSampleRateFormat = new WaveFormatExtensible(outputFormat.SampleRate, 16, 2);
if (!audioClient.IsFormatSupported(shareMode, correctSampleRateFormat))
{
throw new NotSupportedException("Can't find a supported format to use");
}
}
}
outputFormat = correctSampleRateFormat;
}
else
{
outputFormat = closestSampleRateFormat;
}
// just check that we can make it.
using (new ResamplerDmoStream(waveProvider, outputFormat))
{
}
this.dmoResamplerNeeded = true;
}
else
{
dmoResamplerNeeded = false;
}
this.sourceProvider = waveProvider;
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
// Init Shared or Exclusive
if (shareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, 0, 0,
outputFormat, Guid.Empty);
// Get back the effective latency from AudioClient
latencyMilliseconds = (int)(audioClient.StreamLatency / 10000);
}
else
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(shareMode, AudioClientStreamFlags.EventCallback, latencyRefTimes, latencyRefTimes,
outputFormat, Guid.Empty);
}
// Create the Wait Event Handle
frameEventWaitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
audioClient.SetEventHandle(frameEventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(shareMode, AudioClientStreamFlags.None, latencyRefTimes, 0,
outputFormat, Guid.Empty);
}
// Get the RenderClient
renderClient = audioClient.AudioRenderClient;
}
//public void Setup(string DeviceId, bool useEventSync = false, int audioBufferMillisecondsLength = 100, bool exclusiveMode = false)
public void Setup(string deviceId, object captureProperties = null)
{
logger.Debug("AudioSourceEx::Setup(...) " + deviceId);
if (captureState != CaptureState.Closed)
{
throw new InvalidOperationException("Invalid audio capture state " + captureState);
}
WasapiCaptureProperties wasapiCaptureProperties = captureProperties as WasapiCaptureProperties ?? new WasapiCaptureProperties();
using (var deviceEnum = new MMDeviceEnumerator())
{
var mmDevices = deviceEnum.EnumerateAudioEndPoints(DataFlow.All, DeviceState.Active);
for (int i = 0; i < mmDevices.Count; i++)
{
var d = mmDevices[i];
if (d.ID == deviceId)
{
captureDevice = d;
continue;
}
d.Dispose();
}
}
if (captureDevice == null)
{
throw new Exception("MMDevice not found...");
}
this.isUsingEventSync = wasapiCaptureProperties.EventSyncMode;
this.audioBufferMillisecondsLength = wasapiCaptureProperties.BufferMilliseconds;
this.audioClient = captureDevice.AudioClient;
this.ShareMode = wasapiCaptureProperties.ExclusiveMode? AudioClientShareMode.Exclusive : AudioClientShareMode.Shared;
this.waveFormat = audioClient.MixFormat;
long requestedDuration = ReftimesPerMillisec * audioBufferMillisecondsLength;
if (!audioClient.IsFormatSupported(ShareMode, waveFormat))
{
throw new ArgumentException("Unsupported Wave Format");
}
try
{
var streamFlags = AudioClientStreamFlags.None;
if (captureDevice.DataFlow != DataFlow.Capture)
{
streamFlags = AudioClientStreamFlags.Loopback;
}
// If using EventSync, setup is specific with shareMode
if (isUsingEventSync)
{
var flags = AudioClientStreamFlags.EventCallback | streamFlags;
// Init Shared or Exclusive
if (ShareMode == AudioClientShareMode.Shared)
{
// With EventCallBack and Shared, both latencies must be set to 0
audioClient.Initialize(ShareMode, flags, requestedDuration, 0, waveFormat, Guid.Empty);
}
else
{
// With EventCallBack and Exclusive, both latencies must equals
audioClient.Initialize(ShareMode, flags, requestedDuration, requestedDuration, waveFormat, Guid.Empty);
}
// Create the Wait Event Handle
frameEventWaitHandle = new AutoResetEvent(false);
audioClient.SetEventHandle(frameEventWaitHandle.SafeWaitHandle.DangerousGetHandle());
}
else
{
// Normal setup for both sharedMode
audioClient.Initialize(ShareMode, streamFlags, requestedDuration, 0, waveFormat, Guid.Empty);
}
int bufferFrameCount = audioClient.BufferSize;
bytesPerFrame = waveFormat.Channels * waveFormat.BitsPerSample / 8;
recordBuffer = new byte[bufferFrameCount * bytesPerFrame];
captureState = CaptureState.Initialized;
}
catch (Exception ex)
{
logger.Error(ex);
CleanUp();
throw;
}
}
