//@Override
//@SuppressLint({ "InlinedApi", "NewApi" })
protected override void encodeWithMediaCodec()
{
int bufferSize = AudioRecord.GetMinBufferSize(mQuality.samplingRate, ChannelIn.Mono, Encoding.Pcm16bit) * 2;
((AACLATMPacketizer)mPacketizer).setSamplingRate(mQuality.samplingRate);
mAudioRecord = new AudioRecord(Android.Media.AudioSource.Mic, mQuality.samplingRate, Android.Media.ChannelIn.Mono, Android.Media.Encoding.Pcm16bit, bufferSize);
mMediaCodec = MediaCodec.CreateEncoderByType("audio/mp4a-latm");
MediaFormat format = new MediaFormat();
format.SetString(MediaFormat.KeyMime, "audio/mp4a-latm");
format.SetInteger(MediaFormat.KeyBitRate, mQuality.bitRate);
format.SetInteger(MediaFormat.KeyChannelCount, 1);
format.SetInteger(MediaFormat.KeySampleRate, mQuality.samplingRate);
format.SetInteger(MediaFormat.KeyAacProfile, (int)MediaCodecInfo.CodecProfileLevel.AACObjectLC);
format.SetInteger(MediaFormat.KeyMaxInputSize, bufferSize);
mMediaCodec.Configure(format, null, null, MediaCodecConfigFlags.Encode);
mAudioRecord.StartRecording();
mMediaCodec.Start();
MediaCodecInputStream inputStream = new MediaCodecInputStream(mMediaCodec);
Java.Nio.ByteBuffer[] inputBuffers = mMediaCodec.GetInputBuffers();
mThread = new Thread(this);
mThread.Start();
// The packetizer encapsulates this stream in an RTP stream and send it over the network
mPacketizer.setInputStream(inputStream);
mPacketizer.start();
mStreaming = true;
}
public Microphone(int bufferSize = -1)
{
SupportedSampleRates = (new[] { 8000, 11025, 16000, 22050, 44100 })
.Where(rate => AudioRecord.GetMinBufferSize(rate, ChannelIn.Mono, Encoding.Pcm16bit) > 0)
.ToList();
_bufferSize = bufferSize;
}
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);
}
public Task <AudioRecordResult> Record(AudioRecordOptions options = null)
{
_options = options ?? AudioRecordOptions.Empty;
_tcs = new TaskCompletionSource <AudioRecordResult>();
_bufferSize = AudioRecord.GetMinBufferSize(_options.SampleRate, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING) * 3;
_recorder = new AudioRecord(AudioSource.VoiceRecognition, _options.SampleRate, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, _bufferSize);
if (_recorder.State == State.Initialized)
{
_recorder.StartRecording();
}
else
{
return(Task.FromResult(new AudioRecordResult($"AudioRecord initialisation returned unexpected state ({_recorder.State})")));
}
_isRecording = true;
_timeoutToken = new CancellationTokenSource();
Task.Run(() => RecordAudio());
Task.Run(() => Timeout());
return(_tcs.Task);
}
private int GetRate()
{
var rate = new int[] { 4000, 8000, 11025, 16000, 22050, 44100 }
.Where(k => AudioRecord.GetMinBufferSize(k, ChannelIn.Mono, Android.Media.Encoding.Pcm16bit) != -2)
.Last();
return(rate);
}
private int determineMinimumBufferSize(int sampleRate, Encoding encoding)
{
/*int minBufferSize =
* AudioRecord.GetMinBufferSize(sampleRate,
* AudioFormat.CHANNEL_IN_MONO, encoding);
* return minBufferSize;*/
return(AudioRecord.GetMinBufferSize(sampleRate, ChannelIn.Mono, encoding));
}
public Listener()
{
Rate = GetRate();
_soundStream = new AudioRecord(AudioSource.Mic, Rate, ChannelIn.Mono, Android.Media.Encoding.Pcm16bit,
AudioRecord.GetMinBufferSize(Rate, ChannelIn.Mono, Android.Media.Encoding.Pcm16bit) * 10);
BlockStream = new BlockPickStream(new AudioRecordStream(_soundStream), Rate / 5, 4, 400, Rate * 3);
}
/// <summary>
/// Record from the microphone and broadcast the buffer.
/// </summary>
private async Task Record()
{
this.bufferSize = AudioRecord.GetMinBufferSize(this.SampleRate, ChannelIn.Mono, Encoding.Pcm16bit);
var buffer = new byte[this.bufferSize];
var readCount = await this.audioSource.ReadAsync(buffer, 0, this.bufferSize);
this.OnBroadcast.Invoke <byte[]>(this, buffer);
}
/// <summary>
/// Buffers the size.
/// </summary>
/// <param name="sampleRateInHz">The sample rate in hz.</param>
/// <param name="channelConfig">The channel configuration.</param>
/// <param name="audioFormat">The audio format.</param>
/// <returns></returns>
private int BufferSize(int sampleRateInHz, int channelConfig, int audioFormat)
{
int buffSize = AudioRecord.GetMinBufferSize(sampleRateInHz, ChannelIn.Mono, Encoding.Pcm16bit);
if (buffSize < sampleRateInHz)
{
buffSize = sampleRateInHz;
}
return(buffSize);
}
AudioRecord GetAudioRecord(int sampleRate)
{
this.sampleRate = sampleRate;
var channelConfig = ChannelIn.Mono;
var encoding = Encoding.Pcm16bit;
bufferSize = AudioRecord.GetMinBufferSize(sampleRate, channelConfig, encoding) * 8;
return(new AudioRecord(AudioSource.Mic, sampleRate, ChannelIn.Stereo, encoding, bufferSize));
}
public Recorder()
{
_sampleRate = Init();
_bufferSize = AudioRecord.GetMinBufferSize(_sampleRate, Channel, AudioEncoding) * 3;
_recorder = new AudioRecord(AudioSource.Mic,
_sampleRate, Channel,
AudioEncoding, _bufferSize);
}
public string Prepare()
{
ChannelIn ch = ChannelIn.Mono;
if (CHANNELS == 2)
{
ch = ChannelIn.Stereo;
}
bufferSize = AudioRecord.GetMinBufferSize
(SAMPLING_RATE, ch, Android.Media.Encoding.Pcm16bit) * 3;
var recordingId = Guid.NewGuid().ToString();
var fileName = $"{recordingId}.{FILE_EXTENSION}";
endRecording = false;
audioBuffer = new System.Byte[bufferSize];
try
{
filePath = GetFullPathNameForRecording(fileName);
audioRecord = new AudioRecord(
// Hardware source of recording.
AudioSource.Mic,
// Frequency
SAMPLING_RATE,
// Mono or stereo
ch,
// Audio encoding
Android.Media.Encoding.Pcm16bit,
// Length of the audio clip.
audioBuffer.Length
);
output = new AudioFile()
{
FileName = fileName,
BitDepth = BIT_RATE,
SampleRate = SAMPLING_RATE,
NumberOfChannels = CHANNELS,
ContentType = MIME_TYPE,
};
currentState = State.Prepared;
return(recordingId);
}
catch (IllegalStateException e)
{
throw new RecordingException(e.ToString());
}
}
public AndroidRecorder()
{
foreach (int rate in new int[] { 8000, 11025, 16000, 22050, 44100 })
{
bufferSize = AudioRecord.GetMinBufferSize(rate, ChannelIn.Mono, ENCODING);
if (bufferSize > 0)
{
sample_rate = rate;
break;
}
}
}
/// <summary>
/// Initializes all recording parameters.
/// </summary>
public void RecorderInit()
{
// Get the minimum buffer size required for the successful creation of an AudioRecord object.
_bufferSizeInBytes = AudioRecord.GetMinBufferSize(RECORDER_SAMPLERATE, RECORDER_CHANNELS,
RECORDER_AUDIO_ENCODING);
// Initialize Audio Recorder.
_audioRecorder = new AudioRecord(AudioSource.Mic, RECORDER_SAMPLERATE,
RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, _bufferSizeInBytes);
_audioRecorder.StartRecording();
}
private void InitRecorder()
{
var minBufferSize = AudioRecord.GetMinBufferSize(SAMPLE_RATE_IN_HZ, CHANNEL_CONFIG, ENCODING);
audioRecord = new AudioRecord(AudioSource.Mic, SAMPLE_RATE_IN_HZ, CHANNEL_CONFIG, ENCODING, minBufferSize);
vad.Enabled = config.VoiceActivityDetectionEnabled;
vad.SpeechBegin += Vad_SpeechBegin;
vad.SpeechEnd += Vad_SpeechEnd;
vad.SpeechNotDetected += Vad_SpeechNotDetected;;
vad.AudioLevelChange += Vad_AudioLevelChange;
}
public static int Init()
{
foreach (var rate in SAMPLE_RATES)
{ // add the rates you wish to check against
var bufferSize = AudioRecord.GetMinBufferSize(rate, Channel, AudioEncoding);
if (bufferSize > 0)
{
return(rate);
}
}
throw new NotSupportedException("Sample rate is not supported.");
}
/// <summary>
/// Initializes a new instance of the <see cref="AudioStream"/> class.
/// </summary>
/// <param name="sampleRate">Sample rate.</param>
/// <param name="channels">The <see cref="ChannelIn"/> value representing the number of channels to record.</param>
/// <param name="audioFormat">The format of the recorded audio.</param>
public AudioStream(int sampleRate = 44100, ChannelIn channels = ChannelIn.Mono, Encoding audioFormat = Encoding.Pcm16bit)
{
bufferSize = AudioRecord.GetMinBufferSize(sampleRate, channels, audioFormat);
if (bufferSize < 0)
{
throw new Exception("Invalid buffer size calculated; audio settings used may not be supported on this device");
}
SampleRate = sampleRate;
this.channels = channels;
this.audioFormat = audioFormat;
}
private void InitialiseRecorder()
{
var context = CrossCurrentActivity.Current.Activity;
var audioManager = context.GetSystemService(Context.AudioService) as AudioManager;
this._sampleRate = Int32.Parse(audioManager.GetProperty(AudioManager.PropertyOutputSampleRate));
if (this._audioRecord != null)
{
this._audioRecord.Release();
}
this._bufferSize = AudioRecord.GetMinBufferSize(this._sampleRate, this.MONO_CHANNEL, this.ENCODING);
this._audioRecord = new AudioRecord(AudioSource.Mic, this._sampleRate, this.STEREO_CHANNEL, this.ENCODING, this._bufferSize);
}
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();
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.activity_debugaudio_towav);
InitCharts();
SetButtonHandlers();
EnableButtons(false);
// bufferSize (returns 2048 // not used)
bufferSize = AudioRecord.GetMinBufferSize(8000,
Android.Media.ChannelIn.Mono,
Android.Media.Encoding.Pcm16bit);
}
public SoundCapture(int sampleSize, int buffermilliseconds)
{
if (buffermilliseconds > 1000)
{
throw new ArgumentOutOfRangeException(nameof(buffermilliseconds));
}
var pushsize = sampleSize / (1000 / buffermilliseconds);
var minbuffersize = AudioRecord.GetMinBufferSize(sampleSize, ChannelIn.Mono, Encoding.Pcm16bit);
if (pushsize < minbuffersize)
{
throw new ArgumentException($"MinBufferSize is {minbuffersize}byte");
}
_record = new AudioRecord(AudioSource.Default, sampleSize, ChannelIn.Mono, Encoding.Pcm16bit, pushsize);
_buffer = new short[pushsize / 2];
}
private void Initialize()
{
var sampleRates = new[] { 8000, 11025, 16000, 22050, 44100 };
_cacheFolder = MainActivity.Instance.CacheDir.AbsolutePath;
foreach (int rate in sampleRates.Reverse())
{
_bufferSize = AudioRecord.GetMinBufferSize(rate, _recorderChannels, _recorderAudioEncoding);
_deviceService.AudioSampleRate = rate;
if (_bufferSize > 0)
{
return;
}
}
throw new Exception("Could not find valid sample rate and buffer size configuration.");
}
public void StartRecording()
{
var context = Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity;
var audioManager = (AudioManager)context.GetSystemService(Context.AudioService);
_recorderSamplerate = int.Parse(audioManager.GetProperty(AudioManager.PropertyOutputSampleRate));
_recorder?.Release();
_bufferSize = AudioRecord.GetMinBufferSize(_recorderSamplerate, ChannelIn.Stereo, Encoding.Pcm16bit) * 3;
_recorder = new AudioRecord(AudioSource.Mic, _recorderSamplerate, RecorderChannels, RecorderAudioEncoding, _bufferSize);
_recorder.StartRecording();
_isRecording = true;
_token = new CancellationTokenSource();
Task.Run(() => WriteAudioDataToFile(), _token.Token);
}
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();
}
}
public Task Start(Action <float[]> callback)
{
if (!_isrecording)
{
_isrecording = true;
var minbuffersize = AudioRecord.GetMinBufferSize(_sampleRate, ChannelIn.Mono, Encoding.Pcm16bit);
if (_bufferSize * 2 < minbuffersize)
{
throw new ArgumentException($"MinBufferSize is {minbuffersize}byte");
}
_record = new AudioRecord(AudioSource.Default, _sampleRate, ChannelIn.Mono, Encoding.Pcm16bit,
_bufferSize * 2);
_thread = new Thread(ReadThread);
_thread.Start();
}
_callback = callback;
return(Task.CompletedTask);
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main); // for the textview setting text
tv = FindViewById <TextView>(Resource.Id.text1);
System.Timers.Timer timer = new System.Timers.Timer();
timer.Interval = 500;
timer.Elapsed += OnTimedEvent;
try
{
bufferSize = AudioRecord
.GetMinBufferSize(sampleRate, ChannelIn.Mono,
Encoding.Pcm16bit);
}
catch (ArgumentException e)
{
//android.util.Log.e("TrackingFlow", "Exception", e);
}
Button b = FindViewById <Button>(Resource.Id.button1);
audio = new AudioRecord(AudioSource.Mic, sampleRate,
ChannelIn.Mono,
Encoding.Pcm16bit, bufferSize);
audio.StartRecording();
b.Click += delegate
{
if (!clicked)
{
clicked = true;
b.Text = "STOP";
timer.Enabled = true;
}
else
{
b.Text = "START";
clicked = false;
timer.Enabled = false;
}
};
}
public async void StartRecording()
{
if (_recorder != null)
{
StopRecording();
}
var context = Android.App.Application.Context;
var audioManager = (AudioManager)context.GetSystemService(Context.AudioService);
_samplingRate = int.Parse(audioManager.GetProperty(AudioManager.PropertyOutputSampleRate));
//_bufferSize = 4 * AudioRecord.GetMinBufferSize(_samplingRate, ChannelIn.Mono, Encoding.PcmFloat);
_bufferSize = 4 * AudioRecord.GetMinBufferSize(_samplingRate, ChannelIn.Mono, Encoding.Pcm16bit);
_recorder = new AudioRecord(AudioSource.Mic, _samplingRate, _channelCount, _audioEncodingType, _bufferSize);
//uncomment for PcmFloat mode: =====================
//_sizeInFloats = _bufferSize / sizeof(float);
//instead of Pcm16bit: =============================
_sizeInFloats = _bufferSize / sizeof(short);
_data = new float[1][];
_data[0] = new float[_sizeInFloats]; // only one channel (mono)
_bytes = new byte[_bufferSize];
_temp = new byte[_sizeInFloats * sizeof(float)];
var options = new PitchOptions
{
SamplingRate = _samplingRate,
FrameDuration = (double)_sizeInFloats / _samplingRate
};
_pitchExtractor = new PitchExtractor(options);
_pitch = new float[1];
_robotizer = new RobotEffect(216, 1024);
_recorder.StartRecording();
_isRecording = true;
await ProcessAudioData();
}
/// <summary>
/// Starts the specified sample rate.
/// </summary>
/// <param name="sampleRate">The sample rate.</param>
/// <returns>Task<System.Boolean>.</returns>
public Task <bool> Start(int sampleRate)
{
return(Task.Run(
() =>
{
if (!SupportedSampleRates.Contains(sampleRate))
{
return false;
}
_bufferSize = AudioRecord.GetMinBufferSize(sampleRate, ChannelIn.Mono, Encoding.Pcm16bit);
_audioSource = new AudioRecord(AudioSource.Mic, sampleRate, ChannelIn.Mono, Encoding.Pcm16bit, _bufferSize);
StartRecording();
return true;
}));
}
public void StartRecording()
{
var context = Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity;
var audioManager = (AudioManager)context.GetSystemService(Context.AudioService);
RECORDER_SAMPLERATE = Int32.Parse(audioManager.GetProperty(AudioManager.PropertyOutputSampleRate));
if (recorder != null)
{
recorder.Release();
}
bufferSize = AudioRecord.GetMinBufferSize(RECORDER_SAMPLERATE, ChannelIn.Mono, Encoding.Pcm16bit);
recorder = new AudioRecord(AudioSource.Mic, RECORDER_SAMPLERATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, bufferSize);
recorder.StartRecording();
isRecording = true;
token = new CancellationTokenSource();
Task.Run(() => WriteAudioDataToFile(), token.Token);
}