public void Stop()
{
if (!IsInited)
{
return;
}
lock (syncObj)
{
capture.Stop();
}
}
public void Stop()
{
if (!IsInited)
{
return;
}
lock (syncObj)
{
capture.Stop();
if (systemTimer != null)
{
systemTimer.Dispose();
}
systemTimer = null;
}
}
/// <summary>
/// Stop recording from the Microphone
/// </summary>
public void StopRecording()
{
if (IsMicrophoneValid)
{
continuePolling = false;
audio_capture.Stop();
ClearBuffers(0);
}
}
public override void Disable()
{
if (!enabled)
{
return;
}
audioCapture.Stop();
enabled = false;
}
public void StopEcho()
{
if (Capture == null)
{
return;
}
AL.SourceStop(PlaybackSrc);
int bufc;
AL.GetSource(PlaybackSrc, ALGetSourcei.BuffersQueued, out bufc);
if (bufc > 0)
{
int[] bufs = AL.SourceUnqueueBuffers(PlaybackSrc, bufc);
AL.DeleteBuffers(bufs);
}
AL.DeleteSource(PlaybackSrc);
PlaybackSrc = 0;
Capture.Stop();
Capture.Dispose();
Capture = null;
}
void StopRecording()
{
timer_GetSamples.Stop();
if (audio_capture != null)
{
audio_capture.Stop();
audio_capture.Dispose();
audio_capture = null;
}
if (audio_context != null)
{
int r;
AL.GetSource(src, ALGetSourcei.BuffersQueued, out r);
ClearBuffers(r);
AL.DeleteSource(src);
audio_context.Dispose();
audio_context = null;
}
}
private void ChEnable_CheckedChanged(object sender, EventArgs e)
{
if (ChEnable.Checked)
{
try
{
AudioCapturer = new AudioCapture(AudioCapture.AvailableDevices[LsAudioDevices.SelectedIndex], 8000, ALFormat.Mono8, 256);
AudioCapturer.Start();
}
catch
{
}
}
else
{
if (AudioCapturer != null)
{
AudioCapturer.Stop();
AudioCapturer.Dispose();
AudioCapturer = null;
System.Threading.Thread.Sleep(100);
}
}
}
/// <summary>
/// 关闭语音
/// </summary>
public void Stop()
{
_audioPlayer.Stop();
_audioCapture.Stop();
_transferClient.Disconnect();
}
public RecorderDiagnostic()
{
Trace.WriteLine("--- AudioCapture related errors ---");
IsDeviceAvailable = false;
try
{
r = new AudioCapture(AudioCapture.DefaultDevice, 16000, ALFormat.Mono16, 4096);
}
catch (AudioDeviceException ade)
{
Trace.WriteLine("AudioCapture Exception caught: " + ade.Message);
return;
}
IsDeviceAvailable = true;
DeviceName = r.CurrentDevice;
CheckRecorderError("Alc.CaptureOpenDevice");
r.Start();
CheckRecorderError("Alc.CaptureStart");
Thread.Sleep(100);
r.Stop();
CheckRecorderError("Alc.CaptureStop");
byte[] Buffer = new byte[8192];
Thread.Sleep(10); // Wait for a few samples to become available.
int SamplesBefore = r.AvailableSamples;
CheckRecorderError("Alc.GetInteger(...CaptureSamples...)");
r.ReadSamples(Buffer, (SamplesBefore > 4096 ? 4096 : SamplesBefore));
CheckRecorderError("Alc.CaptureSamples");
int SamplesCaptured = SamplesBefore - r.AvailableSamples;
uint ZeroCounter = 0;
for (int i = 0; i < SamplesCaptured * 2; i++)
{
if (Buffer[i] == 0)
ZeroCounter++;
}
for (int i = 0; i < SamplesCaptured; i++)
{
short sample = BitConverter.ToInt16(Buffer, i * 2);
if (sample > MaxSample)
MaxSample = sample;
if (sample < MinSample)
MinSample = sample;
}
if (ZeroCounter < SamplesCaptured * 2 && SamplesCaptured > 0)
BufferContentsAllZero = false;
else
BufferContentsAllZero = true;
r.Dispose();
CheckRecorderError("Alc.CaptureCloseDevice");
// no playback test needed due to Parrot test app.
/*
uint buf;
AL.GenBuffer(out buf);
AL.BufferData(buf, ALFormat.Mono16, BufferPtr, SamplesCaptured * 2, 16000);
uint src;
AL.GenSource(out src);
AL.BindBufferToSource(src, buf);
AL.Listener(ALListenerf.Gain, 16.0f);
AL.SourcePlay(src);
while (AL.GetSourceState(src) == ALSourceState.Playing)
{
Thread.Sleep(0);
}
AL.SourceStop(src);
AL.DeleteSource(ref src);
AL.DeleteBuffer(ref buf);
*/
}
public RecorderDiagnostic()
{
Trace.WriteLine("--- AudioCapture related errors ---");
IsDeviceAvailable = false;
try
{
r = new AudioCapture(AudioCapture.DefaultDevice, 16000, ALFormat.Mono16, 4096);
}
catch (AudioDeviceException ade)
{
Trace.WriteLine("AudioCapture Exception caught: " + ade.Message);
return;
}
IsDeviceAvailable = true;
DeviceName = r.CurrentDevice;
CheckRecorderError("Alc.CaptureOpenDevice");
r.Start();
CheckRecorderError("Alc.CaptureStart");
Thread.Sleep(100);
r.Stop();
CheckRecorderError("Alc.CaptureStop");
byte[] Buffer = new byte[8192];
Thread.Sleep(10); // Wait for a few samples to become available.
int SamplesBefore = r.AvailableSamples;
CheckRecorderError("Alc.GetInteger(...CaptureSamples...)");
r.ReadSamples(Buffer, (SamplesBefore > 4096 ? 4096 : SamplesBefore));
CheckRecorderError("Alc.CaptureSamples");
int SamplesCaptured = SamplesBefore - r.AvailableSamples;
uint ZeroCounter = 0;
for (int i = 0; i < SamplesCaptured * 2; i++)
{
if (Buffer[i] == 0)
{
ZeroCounter++;
}
}
for (int i = 0; i < SamplesCaptured; i++)
{
short sample = BitConverter.ToInt16(Buffer, i * 2);
if (sample > MaxSample)
{
MaxSample = sample;
}
if (sample < MinSample)
{
MinSample = sample;
}
}
if (ZeroCounter < SamplesCaptured * 2 && SamplesCaptured > 0)
{
BufferContentsAllZero = false;
}
else
{
BufferContentsAllZero = true;
}
r.Dispose();
CheckRecorderError("Alc.CaptureCloseDevice");
// no playback test needed due to Parrot test app.
/*
* uint buf;
* AL.GenBuffer(out buf);
* AL.BufferData(buf, ALFormat.Mono16, BufferPtr, SamplesCaptured * 2, 16000);
* uint src;
* AL.GenSource(out src);
* AL.BindBufferToSource(src, buf);
* AL.Listener(ALListenerf.Gain, 16.0f);
* AL.SourcePlay(src);
* while (AL.GetSourceState(src) == ALSourceState.Playing)
* {
* Thread.Sleep(0);
* }
* AL.SourceStop(src);
*
* AL.DeleteSource(ref src);
* AL.DeleteBuffer(ref buf);
*/
}
public void stop()
{
myDevice.Stop();
}
public Task <string> RecordToWav()
{
Directory.CreateDirectory($"./{_configuration.WavFilesFolderName}");
var wavFile = $"./{_configuration.WavFilesFolderName}/{Guid.NewGuid()}.wav";
var recorders = AudioCapture.AvailableDevices;
for (int i = 0; i < recorders.Count; i++)
{
Console.WriteLine(recorders[i]);
}
Console.WriteLine("-----");
const int samplingRate = 44100; // Samples per second
const ALFormat alFormat = ALFormat.Mono16;
const ushort bitsPerSample = 16; // Mono16 has 16 bits per sample
const ushort numChannels = 1; // Mono16 has 1 channel
using (var f = File.OpenWrite(wavFile))
using (var sw = new BinaryWriter(f))
{
// Read This: http://soundfile.sapp.org/doc/WaveFormat/
sw.Write(new char[] { 'R', 'I', 'F', 'F' });
sw.Write(0); // will fill in later
sw.Write(new char[] { 'W', 'A', 'V', 'E' });
// "fmt " chunk (Google: WAVEFORMATEX structure)
sw.Write(new char[] { 'f', 'm', 't', ' ' });
sw.Write(16); // chunkSize (in bytes)
sw.Write((ushort)1); // wFormatTag (PCM = 1)
sw.Write(numChannels); // wChannels
sw.Write(samplingRate); // dwSamplesPerSec
sw.Write(samplingRate * numChannels * (bitsPerSample / 8)); // dwAvgBytesPerSec
sw.Write((ushort)(numChannels * (bitsPerSample / 8))); // wBlockAlign
sw.Write(bitsPerSample); // wBitsPerSample
// "data" chunk
sw.Write(new char[] { 'd', 'a', 't', 'a' });
sw.Write(0); // will fill in later
// 10 seconds of data. overblown, but it gets the job done
const int bufferLength = samplingRate * 10;
int samplesWrote = 0;
Console.WriteLine($"Recording from: {recorders[0]}");
using (var audioCapture = new AudioCapture(
recorders[0], samplingRate, alFormat, bufferLength))
{
var buffer = new short[bufferLength];
audioCapture.Start();
for (int i = 0; i < _configuration.SecondsToRecord; ++i)
{
Thread.Sleep(1000); // give it some time to collect samples
var samplesAvailable = audioCapture.AvailableSamples;
audioCapture.ReadSamples(buffer, samplesAvailable);
for (var x = 0; x < samplesAvailable; ++x)
{
sw.Write(buffer[x]);
}
samplesWrote += samplesAvailable;
Console.WriteLine($"Wrote {samplesAvailable}/{samplesWrote} samples...");
}
audioCapture.Stop();
}
sw.Seek(4, SeekOrigin.Begin); // seek to overall size
sw.Write(36 + samplesWrote * (bitsPerSample / 8) * numChannels);
sw.Seek(40, SeekOrigin.Begin); // seek to data size position
sw.Write(samplesWrote * (bitsPerSample / 8) * numChannels);
}
return(Task.FromResult(wavFile));
}