private void ReadAudioAsync()
{
while (isRecording)
{
try
{
// Keep reading the buffer while there is audio input.
audRecorder.Read(audioBuffer, 0, audioBuffer.Length);
}
catch (Exception ex)
{
Console.Out.WriteLine(ex.Message);
break;
}
}
byte[] realData = audioBuffer;
Console.WriteLine(realData.Length);
using (FileStream fs = new FileStream(path, FileMode.Create))
{
WaveHeaderWriter.WriteHeader(fs, realData.Length, 1, 44100);
fs.Write(realData, 0, realData.Length);
fs.Close();
}
}
void readLoop()
{
byte[] buffer = new byte[bufferSize];
while (!stopRecording)
{
try
{
int num_bytes = audioRecorder.Read(buffer, 0, buffer.Length);
byte[] data_to_send = new byte[num_bytes];
Array.Copy(buffer, data_to_send, num_bytes);
Task.Run(() =>
{
OnSoundDataReceived(data_to_send);
});
}
catch (Exception e)
{
Logging.error("Exception occured while recording audio stream: " + e);
break;
}
Thread.Sleep(10);
}
audioRecorder.Stop();
audioRecorder.Release();
audioRecorder.Dispose();
audioRecorder = null;
running = false;
}
private void recordLoop()
{
Android.OS.Process.SetThreadPriority(Android.OS.ThreadPriority.UrgentAudio);
while (running)
{
int num_bytes = 0;
try
{
if (audioRecorder != null)
{
if (audioEncoder is OpusEncoder)
{
num_bytes = audioRecorder.ReadAsync(shortsBuffer, 0, shortsBuffer.Length).Result;
encode(num_bytes, true);
}
else
{
num_bytes = audioRecorder.Read(buffer, 0, buffer.Length);
encode(num_bytes, false);
}
}
else
{
stop();
}
}
catch (Exception e)
{
Logging.error("Exception occured while recording audio stream: " + e);
}
Thread.Sleep(1);
}
recordThread = null;
}
void ReadAudio()
{
using (var fileStream = new FileStream(filePath, System.IO.FileMode.Create, System.IO.FileAccess.Write)) {
while (true)
{
if (endRecording)
{
endRecording = false;
break;
}
try {
// Keep reading the buffer while there is audio input.
int numBytes = audioRecord.Read(audioBuffer, 0, audioBuffer.Length);
fileStream.Write(audioBuffer, 0, numBytes);
// Do something with the audio input.
} catch (Exception ex) {
Console.Out.WriteLine(ex.Message);
break;
}
}
fileStream.Close();
}
audioRecord.Stop();
audioRecord.Release();
isRecording = false;
}
private async Task SaveBinaryAudio(Stream outputStream)
{
while (IsRecording == true)
{
try
{
audioData = audRecorder.Read(audioBuffer, 0, audioBuffer.Length);
bWriter.Write(audioBuffer);
}
catch (Exception ex)
{
System.Console.Out.WriteLine(ex.Message);
}
}
long longSampleRate = 44100;
int channels = 2;
long byteRate = 16 * longSampleRate * channels / 8;
long totalAudioLen = audioBuffer.Length;
long totalDataLen = totalAudioLen + 36;
WriteWaveFileHeader(bWriter,
totalAudioLen,
totalDataLen,
longSampleRate,
channels,
byteRate);
outputStream.Close();
bWriter.Close();
}
public Stream EndCaptureAudio()
{
if (_recorder != null)
{
var read = _recorder.Read(_audioBuffer, 0, _audioBuffer.Length);
var offset = TrimAudioZeros(read);
_recorder.Stop();
var audioStream = _audioCaptureStream;
_audioCaptureStream = null;
if (read > offset)
{
audioStream.Write(_audioBuffer, offset, read - offset);
}
_recorder.Release();
_recorder.Dispose();
_recorder = null;
MediaHelper.UpdateWavHeader(audioStream);
audioStream.Seek(0, SeekOrigin.Begin);
return(audioStream);
}
return(null);
}
void WriteAudioDataToFile()
{
var data = new byte[bufferSize];
rawFilePath = GetTempFileName();
FileOutputStream outputStream = null;
try
{
outputStream = new FileOutputStream(rawFilePath);
}
catch (Exception ex)
{
throw new FileLoadException($"unable to create a new file: {ex.Message}");
}
if (outputStream != null)
{
while (audioRecord.RecordingState == RecordState.Recording)
{
audioRecord.Read(data, 0, bufferSize);
outputStream.Write(data);
}
outputStream.Close();
}
}
public byte[] StartRecording()
{
record.StartRecording();
probki = record.Read(audioData, 0, buffSizeInBytes);
return(audioData);
}
public void Run()
{
int len = 0, bufferIndex = 0;
try
{
Java.Nio.ByteBuffer[] inputBuffers = mMediaCodec.GetInputBuffers();
int bufferSize = AudioRecord.GetMinBufferSize(mQuality.samplingRate, ChannelIn.Mono, Encoding.Pcm16bit) * 2;
while (!Thread.Interrupted())
{
bufferIndex = mMediaCodec.DequeueInputBuffer(10000);
if (bufferIndex >= 0)
{
inputBuffers[bufferIndex].Clear();
len = mAudioRecord.Read(inputBuffers[bufferIndex], bufferSize);
if ((len == (int)RecordStatus.ErrorInvalidOperation) || (len == (int)RecordStatus.ErrorBadValue))
{
Log.Error(TAG, "An error occured with the AudioRecord API !");
}
else
{
//Log.v(TAG,"Pushing raw audio to the decoder: len="+len+" bs: "+inputBuffers[bufferIndex].capacity());
mMediaCodec.QueueInputBuffer(bufferIndex, 0, len, Java.Lang.JavaSystem.NanoTime() / 1000, 0);
}
}
}
}
catch (RuntimeException e)
{
e.PrintStackTrace();
}
}
/*********************************************************************************
*
*
*********************************************************************************/
public void ButtonRec_Click(object sender, EventArgs e)
{
Int32 bufferSize = AudioRecord.GetMinBufferSize(mSamplingRate, ChannelIn.Mono, mFormat);
System.Diagnostics.Debug.WriteLine("AudioRecord : GetMinBufferSize={0}", bufferSize);
RecordBuffer.Instance.Frames = mFrameSize;
mAudioRecord = new AudioRecord(
//AudioSource.Default,
//AudioSource.Camcorder,
AudioSource.Mic,
//AudioSource.VoiceCommunication,
//AudioSource.VoiceRecognition,
//AudioSource.VoiceUplink,
mSamplingRate,
ChannelIn.Mono,
mFormat,
bufferSize);
// 音声データを幾つずつ処理するか( = 1フレームのデータの数)
mAudioRecord.SetPositionNotificationPeriod(RecordBuffer.Instance.Frames);
// コールバックを指定
mAudioRecord.SetRecordPositionUpdateListener(new OnRecordPositionUpdateListener());
mAudioRecord.StartRecording();
Byte[] dummy = new Byte[1];
mAudioRecord.Read(dummy, 0, dummy.Length);
}
/// <summary>
/// Record from the microphone and broadcast the buffer.
/// </summary>
async Task Record()
{
byte [] data = new byte [bufferSize];
int readFailureCount = 0;
int readResult = 0;
Debug.WriteLine("AudioStream.Record(): Starting background loop to read audio stream");
while (Active)
{
try
{
// not sure if this is even a good idea, but we'll try to allow a single bad read, and past that shut it down
if (readFailureCount > 1)
{
Debug.WriteLine("AudioStream.Record(): Multiple read failures detected, stopping stream");
await Stop();
break;
}
readResult = audioSource.Read(data, 0, bufferSize); // this can block if there are no bytes to read
// readResult should == the # bytes read, except a few special cases
if (readResult > 0)
{
readFailureCount = 0;
OnBroadcast?.Invoke(this, data);
}
else
{
switch (readResult)
{
case (int)TrackStatus.ErrorInvalidOperation:
case (int)TrackStatus.ErrorBadValue:
case (int)TrackStatus.ErrorDeadObject:
Debug.WriteLine("AudioStream.Record(): readResult returned error code: {0}", readResult);
await Stop();
break;
//case (int)TrackStatus.Error:
default:
readFailureCount++;
Debug.WriteLine("AudioStream.Record(): readResult returned error code: {0}", readResult);
break;
}
}
}
catch (Exception ex)
{
readFailureCount++;
Debug.WriteLine("Error in Android AudioStream.Record(): {0}", ex.Message);
OnException?.Invoke(this, ex);
}
}
}
void RecordAudio()
{
sA = new SampleAggregator(1024);
sA.FftCalculated += SA_FftCalculated;
byte[] audioBuffer = new byte[2048];
var audRecorder = new AudioRecord(
// Hardware source of recording.
AudioSource.Mic,
// Frequency
44100,
// Mono or stereo
ChannelIn.Mono,
// Audio encoding
Android.Media.Encoding.Pcm16bit,
// Length of the audio clip.
audioBuffer.Length
);
var startTime = DateTime.Now;
var endTime = startTime.AddSeconds(60);
audRecorder.StartRecording();
while (DateTime.Now < endTime)
{
try
{
// Keep reading the buffer while there is audio input.
audRecorder.Read(audioBuffer, 0, audioBuffer.Length);
int max = 0, currval = 0;
int total = 0;
for (int i = 0; i < audioBuffer.Length; i = i + 2)
{
currval = audioBuffer[i] * 256 + audioBuffer[i + 1];
sA.Add(currval);
if (max < currval)
{
max = currval;
}
if (currval > 32767)
{
total = total + currval;
}
}
//int level = max - 62719;
//RunOnUiThread(() => seekBar2.Progress = (int) level);
//Console.WriteLine(level*23);
//SetBulbColour(0,level*23);
// Write out the audio file.
}
catch (Exception ex)
{
Console.Out.WriteLine(ex.Message);
break;
}
}
audRecorder.Stop();
}
public void OnPeriodicNotification(AudioRecord recorder)
{
Byte[] buff = new Byte[RecordBuffer.Instance.Frames];
recorder.Read(buff, 0, buff.Length);
RecordBuffer.Instance.Enqueue(buff);
WaveBuffer.Instance.Enqueue(buff);
}
public void OnMarkerReached(AudioRecord recorder)
{
Byte[] buff = new Byte[RecordBuffer.Instance.Frames];
recorder.Read(buff, 0, buff.Length);
RecordBuffer.Instance.Enqueue(buff);
WaveBuffer.Instance.Enqueue(buff);
}
public short[] GetBlock(int count)
{
var e = new short[count];
if (_r.RecordingState == RecordState.Stopped)
{
return(e);
}
_r.Read(e, 0, count);
return(e);
}
private async void Record()
{
await Task.Run(() =>
{
float[] buffer = new float[bufferSize * sizeof(float)];
while (_recording)
{
audioSource.Read(buffer, 0, sizeof(float), 0);
OnBroadcast(this, new EventArgs <float[]>(buffer));
}
});
}
private void WriteAudioDataToFile()
{
WvlLogger.Log(LogType.TraceAll, "WriteAudioDataToFile()");
byte[] data = new byte[bufferSize];
string filename = GetTempFilename();
FileOutputStream fos = null;
try
{
fos = new FileOutputStream(filename);
}
catch (FileNotFoundException e)
{
// TODO Auto-generated catch block
//e.printStackTrace();
WvlLogger.Log(LogType.TraceExceptions, e.ToString());
}
int read = 0;
if (null != fos)
{
while (isRecording)
{
read = recorder.Read(data, 0, bufferSize);
//if (AudioRecord.ERROR_INVALID_OPERATION != read)
if ((int)RecordStatus.ErrorInvalidOperation != read)
{
try
{
fos.Write(data);
}
catch (IOException e)
{
//e.printStackTrace();
WvlLogger.Log(LogType.TraceExceptions, "WriteAudioDataToFile - Exception on os.Write() : " + e.ToString());
}
}
}
try
{
fos.Close();
}
catch (IOException e)
{
//e.printStackTrace();
WvlLogger.Log(LogType.TraceExceptions, "WriteAudioDataToFile - Exception on os.Close() : " + e.ToString());
}
}
}
public void Listen()
{
byte[] audioBuffer = new byte[_bufferSizeInBytes];
int numberOfReadBytes = _audioRecorder.Read(audioBuffer, 0, _bufferSizeInBytes);
double[] x = new double[audioBuffer.Length];
for (int i = 0; i < x.Length; i++)
{
x[i] = audioBuffer[i] / 32768.0;
}
double frequency = FrequencyUtils.FindFundamentalFrequency(x, RECORDER_SAMPLERATE, MinFreq, MaxFreq);
//Fire event for passing back the recorded value.
FinishedSampling(this, new FinishedSampalingEventArgs()
{
Frequency = new Hz((float)frequency * 2),
//Volume = max_magnitude
});
}
public override int Read(byte[] buffer, int offset, int count)
{
var bytesRead = audioRecord.Read(buffer, offset, count);
if (bytesRead > 0)
{
vad.ProcessBufferEx(buffer, bytesRead);
return(bytesRead);
}
return(0);
}
private void ReadThread()
{
_record.StartRecording();
while (_isrecording)
{
var size = _record.Read(_buffer, 0, _buffer.Length);
var result = new byte[size * 2];
Buffer.BlockCopy(_buffer, 0, result, 0, result.Length);
_readSubject.OnNext(result);
}
_record.Stop();
}
void OnNext()
{
short[] audioBuffer = new short[2048];
audioRecord.Read(audioBuffer, 0, audioBuffer.Length);
int[] result = new int[audioBuffer.Length];
for (int i = 0; i < audioBuffer.Length; i++)
{
result[i] = (int)audioBuffer[i];
}
samplesUpdated(this, new SamplesUpdatedEventArgs(result));
}
/**
* Records audio until stopped the {@link #task} is canceled,
* {@link #continueRecording} is false, or {@link #clipListener} returns
* true <br>
* records audio to a short [readBufferSize] and passes it to
* {@link #clipListener} <br>
* uses an audio buffer of size bufferSize * bufferIncreaseFactor
*
* @param recordingBufferSize
* minimum audio buffer size
* @param readBufferSize
* reads a buffer of this size
* @param bufferIncreaseFactor
* to increase recording buffer size beyond the minimum needed
*/
private bool doRecording(int sampleRate, Encoding encoding,
int recordingBufferSize, int readBufferSize,
int bufferIncreaseFactor)
{
if (recordingBufferSize < 0)
{
Log.Debug(TAG, "Bad encoding value, see logcat.Code=" + recordingBufferSize.ToString());
return(false);
}
// give it extra space to prevent overflow
int increasedRecordingBufferSize =
recordingBufferSize * bufferIncreaseFactor;
recorder =
new AudioRecord(AudioSource.Mic, sampleRate,
ChannelIn.Mono, encoding,
increasedRecordingBufferSize);
byte[] readBuffer = new byte[readBufferSize];
continueRecording = true;
Log.Debug(TAG, "start recording, " + "recording bufferSize: "
+ increasedRecordingBufferSize
+ " read buffer size: " + readBufferSize);
//Note: possible IllegalStateException
//if audio recording is already recording or otherwise not available
//AudioRecord.getState() will be AudioRecord.STATE_UNINITIALIZED
recorder.StartRecording();
while (continueRecording)
{
Thread.Sleep(5);
int bufferResult = recorder.Read(readBuffer, 0, readBufferSize);
//in case external code stopped this while read was happening
if ((!continueRecording) || ((task != null) && task.IsCanceled))
{
break;
}
// check for error conditions
if (bufferResult < 0)
{
Log.Error(TAG, "error reading: ERROR_INVALID_OPERATION.Code=" + bufferResult);
}
else
// no errors, do processing
{
clipListener.heard(readBuffer, sampleRate);
}
}
done();
return(heard);
}
private void RecordAudio()
{
if (File.Exists(wavPath))
{
File.Delete(wavPath);
}
System.IO.Stream outputStream = System.IO.File.Open(wavPath, FileMode.CreateNew);
BinaryWriter bWriter = new BinaryWriter(outputStream);
int bufferSize = AudioRecord.GetMinBufferSize(11025,
ChannelIn.Mono, Android.Media.Encoding.Pcm16bit);
audioBuffer = new byte[bufferSize];
audRecorder = new AudioRecord(
// Hardware source of recording.
AudioSource.Mic,
// Frequency
11025,
// Mono or stereo
ChannelIn.Mono,
// Audio encoding
Android.Media.Encoding.Pcm16bit,
// Length of the audio clip.
bufferSize
);
audRecorder.StartRecording();
while (_isRecording == true)
{
try
{
/// Keep reading the buffer while there is audio input.
audioData = audRecorder.Read(audioBuffer, 0, audioBuffer.Length);
bWriter.Write(audioBuffer);
}
catch (System.Exception ex)
{
System.Console.Out.WriteLine(ex.Message);
MessagingCenter.Send <ISoundRecorder, bool>(this, "finishReplaying", true);
break;
}
}
outputStream.Close();
bWriter.Close();
}
private void ReadAudioAsync()
{
while (isRecording)
{
try
{
// Keep reading the buffer while there is audio input.
audRecorder.Read(audioBuffer, 0, audioBuffer.Length);
}
catch (Exception ex)
{
Console.Out.WriteLine(ex.Message);
break;
}
}
}
private void ReadThread()
{
_record.StartRecording();
while (_isrecording)
{
var size = _record.Read(_tmpBuffer, 0, _tmpBuffer.Length);
for (var i = 0; i < _tmpBuffer.Length; i++)
{
_buffer[i] = _tmpBuffer[i] / 32767.0f;//(_tmpBuffer[i] > 100 || _tmpBuffer[i]<-100) ? _tmpBuffer[i] / 32767.0f : 0f;
}
_callback?.Invoke(_buffer);
}
_record.Stop();
_record.Release();
_record.Dispose();
}
void OnNext()
{
WvlLogger.Log(LogType.TraceAll, "OnNext()");
//short[] audioBuffer = new short[2048];
short[] audioBuffer = new short[1024];
WvlLogger.Log(LogType.TraceValues, "OnNext() - audioRecord.Read - audioBuffer.Length : " + audioBuffer.Length.ToString());
audioRecord.Read(audioBuffer, 0, audioBuffer.Length);
int[] result = new int[audioBuffer.Length];
for (int i = 0; i < audioBuffer.Length; i++)
{
result[i] = (int)audioBuffer[i];
}
samplesUpdated(this, new SamplesUpdatedEventArgs(result));
}
void WriteAudioDataToFile()
{
byte[] data = new byte[bufferSize];
var filename = GetTempFilename();
FileOutputStream os = null;
System.Diagnostics.Debug.WriteLine(filename);
try
{
os = new FileOutputStream(filename);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
int read = 0;
if (os != null)
{
while (isRecording)
{
read = recorder.Read(data, 0, bufferSize);
try
{
os.Write(data);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
}
try
{
os.Close();
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
}
}
public override void Run()
{
Android.OS.Process.SetThreadPriority(ThreadPriority.UrgentAudio);
AudioRecord recorder = null;
short[][] buffers = new short[256][];
int ix = 0;
for (int i = 0; i < 256; i++)
{
buffers[i] = new short[160];
}
try
{ // ... initialise
int N = AudioRecord.GetMinBufferSize(8000, ChannelIn.Mono, Android.Media.Encoding.Pcm16bit);
recorder = new AudioRecord(AudioSource.Mic,
8000,
ChannelIn.Mono,
Android.Media.Encoding.Pcm16bit,
N * 10);
recorder.StartRecording();
// ... loop
while (!stopped)
{
short[] buffer = buffers[ix++ % buffers.Length];
N = recorder.Read(buffer, 0, buffer.Length);
//process is what you will do with the data...not defined here
process(buffer);
}
}
catch (Throwable x)
{
Console.WriteLine(x.GetType() + " " + x.Message);
}
finally
{
close();
}
}
protected override void Work()
{
while (recorder == null || recorder.State == State.Uninitialized)
{
Thread.Sleep(100);
}
var buffor = new byte[bufferSize];
var audioSize = recorder.Read(buffor, 0, bufferSize);
if (audioSize > 0)
{
pcmSender.Send(new MultiPlatform.Packets.Audio.PCMPacket()
{
Data = buffor
});
Thread.Sleep(1);
}
}
void OnNext()
{
WvlLogger.Log(LogType.TraceAll, "OnNext()");
short[] audioBuffer = new short[2048];
audioRecord.Read(audioBuffer, 0, audioBuffer.Length);
int[] result = new int[audioBuffer.Length];
for (int i = 0; i < audioBuffer.Length; i++)
{
result[i] = (int)audioBuffer[i];
}
// stop button debug
/*
* samplesUpdated(this, new SamplesUpdatedEventArgs(result));
*/
}
