static Notify()
{
// Setup your session
AudioSession.Initialize();
AudioSession.Category = AudioSessionCategory.MediaPlayback;
AudioSession.SetActive(true);
}
public void StartRecording()
{
try
{
AudioSession.Initialize();
Console.WriteLine("Begin Recording");
AudioSession.Category = AudioSessionCategory.RecordAudio;
AudioSession.SetActive(true);
if (!PrepareAudioRecording())
{
//RecordingStatusLabel.Text = "Error preparing";
return;
}
if (!recorder.Record())
{
//RecordingStatusLabel.Text = "Error recording";
return;
}
this.stopwatch = new Stopwatch();
this.stopwatch.Start();
RecorderPopup.timerText = stopwatch.ElapsedMilliseconds.ToString();
}
catch (Exception ex)
{
}
}
void initAudioSession()
{
// AudioSession
AudioSession.Initialize();
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.01f;
}
public BackgroundAudioPlayerIphone()
{
#if !SIMULATOR
AudioSession.Initialize();
AudioSession.Category = AudioSessionCategory.SoloAmbientSound;
AudioSession.SetActive(true);
#endif
}
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main(string[] args)
{
AudioSession.Initialize();
AudioSession.Category = AudioSessionCategory.AmbientSound;
AudioSession.SetActive(true);
UIApplication.Main(args, null, "AppDelegate");
}
static void Main(string[] args)
{
// the AudioSession code must be placed here to work properly
AudioSession.Initialize();
AudioSession.Category = AudioSessionCategory.AmbientSound;
AudioSession.SetActive(true);
UIApplication.Main(args, null, "AppDelegate");
}
internal static void Setup()
{
Debug.WriteLine("AudioSessionManager.Setup()");
AudioSession.Initialize();
AudioSession.Interrupted += (o, e) =>
{
Debug.WriteLine("AudioSession.Interrupted");
audioSystemAvailable = false;
AudioSession.SetActive(false);
};
// Want to reactivate on resume from interruption
AudioSession.Resumed += (o, e) =>
{
Debug.WriteLine("AudioSession.Resumed");
AudioSession.SetActive(true);
audioSystemAvailable = true;
SoundEffectThread.RestartAllRestarable();
};
// Checking if Other Audio is Playing During App Launch
bool otherAudioIsPlaying = AudioSession.OtherAudioIsPlaying;
MediaPlayer.otherAudioIsPlaying = otherAudioIsPlaying;
Debug.WriteLine("AudioSession.OtherAudioIsPlaying == " + otherAudioIsPlaying);
// For some unknown reason, setting category on the simulator fails with an unknown error code (-50)
try
{
if (otherAudioIsPlaying)
{
AudioSession.Category = AudioSessionCategory.AmbientSound;
}
else
{
AudioSession.Category = AudioSessionCategory.SoloAmbientSound;
}
}
catch
{
Debug.WriteLine("Exception when setting AudioSession.Category");
}
AudioSession.SetActive(true);
audioSystemAvailable = true;
}
// This method is invoked when the application has loaded its UI and its ready to run
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
AudioSession.Initialize();
AudioSession.Category = AudioSessionCategory.MediaPlayback;
AudioSession.SetActive(true);
app.ApplicationSupportsShakeToEdit = false;
// If you have defined a view, add it here:
window.AddSubview(rootController.View);
window.MakeKeyAndVisible();
return(true);
}
void prepareAudioUnit()
{
// AudioSession
AudioSession.Initialize();
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.005f;
// creating an AudioComponentDescription of the RemoteIO AudioUnit
AudioComponentDescription cd = new AudioComponentDescription()
{
componentType = AudioComponentDescription.AudioComponentType.kAudioUnitType_Output,
componentSubType = AudioComponentDescription.AudioComponentSubType.kAudioUnitSubType_RemoteIO,
componentManufacturer = AudioComponentDescription.AudioComponentManufacturerType.kAudioUnitManufacturer_Apple,
componentFlags = 0,
componentFlagsMask = 0
};
// Getting AudioComponent using the audio component description
_audioComponent = AudioComponent.FindComponent(cd);
// creating an audio unit instance
_audioUnit = AudioUnit.CreateInstance(_audioComponent);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
1 // Remote Input
);
// setting audio format
_audioUnit.SetAudioFormat(_dstFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
0 // Remote Output
);
_audioUnit.SetAudioFormat(AudioUnitUtils.AUCanonicalASBD(_sampleRate, 2),
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Output,
1 // Remote input
);
// setting callback method
_audioUnit.RenderCallback += new EventHandler <AudioUnitEventArgs>(_audioUnit_RenderCallback);
_audioUnit.Initialize();
_audioUnit.Start();
}
public void Open(int inputChannelsWanted, int outputChannelsWanted, double targetSampleRate, int bufferSize = 0)
{
Console.WriteLine("Request ios audio device with: inputs: {0}, outputs: {1}, sampleRate: {2}, buffer: {3}",
inputChannelsWanted, outputChannelsWanted, targetSampleRate, bufferSize);
Close();
var file = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "/out.pcm";
Console.WriteLine("Saving to {0}", file);
// _out = new FileStream(file, FileMode.Create, FileAccess.Write);
_preferredBufferSize = (bufferSize <= 0) ? DefaultBufferSize : bufferSize;
_numInputChannels = inputChannelsWanted;
_numOutputChannels = outputChannelsWanted;
AudioSession.SetActive(false);
if (_numInputChannels > 0 && _audioInputIsAvailable)
{
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.OverrideCategoryEnableBluetoothInput = true;
}
else
{
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
}
FixRouteIfSetToReceiver();
AudioSession.PreferredHardwareSampleRate = targetSampleRate;
UpdateDeviceInfo();
UpdateCurrentBufferSize();
PrepareFloatBuffers(_actualBufferSize);
CreateAudioUnit();
_format = _audioUnit.GetAudioFormat(AudioUnitScopeType.Output, 1);
_audioUnit.Stop();
_audioUnit.Start();
AudioSession.SetActive(true);
_isRunning = true;
Console.WriteLine("Opened ios audio device with: inputs: {0}, outputs: {1}, sampleRate: {2}, buffer: {3}",
_numInputChannels, _numOutputChannels, _sampleRate, _actualBufferSize);
}
public override bool StartNotifyBeep()
{
if (!AUDIOSESSION_INITIALIZED)
{
AudioSession.Initialize();
AudioSession.Category = AudioSessionCategory.MediaPlayback;
AUDIOSESSION_INITIALIZED = true;
}
if (!AUDIOSESSION_ACTIVE)
{
AudioSession.SetActive(true);
AUDIOSESSION_ACTIVE = true;
}
var sound = SystemSound.FromFile("res/SystemAlert.wav");
sound.PlayAlertSound();
return(true);
}
public void Close()
{
if (_isRunning)
{
_isRunning = false;
AudioSession.Category = AudioSessionCategory.MediaPlayback;
AudioSession.SetActive(false);
if (_audioUnit != null)
{
_audioUnit.Dispose();
_audioUnit = null;
}
if (_out != null)
{
_out.Close();
}
}
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
public override void ViewDidLoad()
{
base.ViewDidLoad();
// setting button stat
_recordingButton.Enabled = true;
_playBackButton.Enabled = false;
// binding event handlers
_recordingButton.TouchUpInside += new EventHandler(_recordingButton_TouchCancel);
_playBackButton.TouchUpInside += new EventHandler(_playBackButton_TouchDown);
// getting local sound file path
var path = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
path = System.IO.Path.Combine(path, "recording.aiff");
_url = CFUrl.FromFile(path);
// setting audio session
AudioSession.Initialize();
AudioSession.SetActive(true);
}
void prepareAudioUnit()
{
// AudioSession
AudioSession.Initialize();
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.005f;
// Getting AudioComponent Remote output
_audioComponent = AudioComponent.FindComponent(AudioTypeOutput.Remote);
// creating an audio unit instance
_audioUnit = new AudioUnit(_audioComponent);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnitScopeType.Input,
1 // Remote Input
);
// setting audio format
_audioUnit.SetAudioFormat(_dstFormat,
AudioUnitScopeType.Input,
0 // Remote Output
);
var format = AudioStreamBasicDescription.CreateLinearPCM(_sampleRate, bitsPerChannel: 32);
format.FormatFlags = AudioStreamBasicDescription.AudioFormatFlagsAudioUnitCanonical;
_audioUnit.SetAudioFormat(format, AudioUnitScopeType.Output, 1);
// setting callback method
_audioUnit.SetRenderCallback(_audioUnit_RenderCallback, AudioUnitScopeType.Global);
_audioUnit.Initialize();
_audioUnit.Start();
}
//
// This method is invoked when the application has loaded and is ready to run. In this
// method you should instantiate the window, load the UI into it and then make the window
// visible.
//
// You have 17 seconds to return from this method, or iOS will terminate your application.
//
public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
{
AudioSession.Initialize();
AudioSession.Interrupted += delegate {
Debug.WriteLine("Session interrupted");
ThreadStateBeginInterruption();
};
AudioSession.Resumed += delegate {
Debug.WriteLine("Session resumed");
Debug.Print(AudioSession.InterruptionType.ToString());
AudioSession.SetActive(true);
ThreadStateEndInterruption();
};
// our default category -- we change this for conversion and playback appropriately
try {
AudioSession.Category = AudioSessionCategory.SoloAmbientSound;
} catch {
Debug.Print("ERROR: Cannot change audio session category");
}
AudioSession.AudioRouteChanged += delegate(object sender, AudioSessionRouteChangeEventArgs e) {
var gg = e.PreviousInputRoute;
Debug.Print("Audio route change: {0}", e.Reason);
Debug.Print("Old route: {0}", e.PreviousOutputRoutes[0]);
Debug.Print("New route: {0}", e.CurrentOutputRoutes[0]);
};
AudioSession.SetActive(true);
return(true);
}
private OpenALSoundController()
{
#if IPHONE
AudioSession.Initialize();
// NOTE: iOS 5.1 simulator throws an exception when setting the category
// to SoloAmbientSound. This could be removed if that bug gets fixed.
try
{
if (AudioSession.OtherAudioIsPlaying)
{
AudioSession.Category = AudioSessionCategory.AmbientSound;
}
else
{
AudioSession.Category = AudioSessionCategory.SoloAmbientSound;
}
}
catch (AudioSessionException) { }
#endif
alcMacOSXMixerOutputRate(PREFERRED_MIX_RATE);
_device = Alc.OpenDevice(string.Empty);
CheckALError("Could not open AL device");
if (_device != IntPtr.Zero)
{
int[] attribute = new int[0];
_context = Alc.CreateContext(_device, attribute);
CheckALError("Could not open AL context");
if (_context != ContextHandle.Zero)
{
Alc.MakeContextCurrent(_context);
CheckALError("Could not make AL context current");
}
}
else
{
return;
}
allSourcesArray = new int[MAX_NUMBER_OF_SOURCES];
AL.GenSources(allSourcesArray);
availableSourcesCollection = new HashSet <int> ();
inUseSourcesCollection = new HashSet <OALSoundBuffer> ();
playingSourcesCollection = new HashSet <OALSoundBuffer> ();
for (int x = 0; x < MAX_NUMBER_OF_SOURCES; x++)
{
availableSourcesCollection.Add(allSourcesArray [x]);
}
#if IPHONE
AudioSession.Interrupted += (sender, e) =>
{
AudioSession.SetActive(false);
Alc.MakeContextCurrent(ContextHandle.Zero);
Alc.SuspendContext(_context);
};
AudioSession.Resumed += (sender, e) =>
{
// That is, without this, the code wont work :(
// It will fail on the next line of code
// Maybe you could ask for an explanation
// to someone at xamarin
System.Threading.Thread.Sleep(100);
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.SoloAmbientSound;
Alc.MakeContextCurrent(_context);
Alc.ProcessContext(_context);
};
#endif
}
protected override void OnElementChanged(ElementChangedEventArgs <Button> e)
{
try
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
//sobreescreve eventos e outras coisas
}
else if (e.OldElement != null)
{
//cancela a assinatura dos eventos
}
if (Control != null)
{
Control.TouchUpInside += (send, ebla) =>
{
if (Control.TitleLabel.Text.Contains("Gravar"))
{
Console.WriteLine("Begin Recording");
AudioSession.Category = AudioSessionCategory.RecordAudio;
AudioSession.SetActive(true);
if (!PrepareAudioRecording())
{
return;
}
if (!_recorder.Record())
{
return;
}
_stopwatch = new Stopwatch();
_stopwatch.Start();
Control.SetTitle("Parar", UIControlState.Normal);
}
else
{
if (_recorder != null && !_recorder.Record())
{
return;
}
_recorder?.Stop();
Control.SetTitle($" Gravar {_stopwatch.Elapsed:hh\\:mm\\:ss} ", UIControlState.Normal);
_stopwatch.Stop();
MessagingCenter.Send <StartRecordingButtonRenderer, NSUrl>(this, "audioFile", _audioFilePath);
}
};
_observer = NSNotificationCenter.DefaultCenter.AddObserver(AVPlayerItem.DidPlayToEndTimeNotification, delegate
{
_player?.Dispose();
_player = null;
});
}
}
catch (Exception exe)
{
throw new Exception(exe.Message);
}
}
public override bool StopNotifyBeep()
{
AudioSession.SetActive(false);
AUDIOSESSION_ACTIVE = false;
return(true);
}
/// <summary>
/// Open the sound device, sets up an audio context, and makes the new context
/// the current context. Note that this method will stop the playback of
/// music that was running prior to the game start. If any error occurs, then
/// the state of the controller is reset.
/// </summary>
/// <returns>True if the sound controller was setup, and false if not.</returns>
private bool OpenSoundController()
{
#if MONOMAC || IOS
alcMacOSXMixerOutputRate(PREFERRED_MIX_RATE);
#endif
try
{
_device = Alc.OpenDevice(string.Empty);
}
catch (Exception ex)
{
_SoundInitException = ex;
return(false);
}
if (CheckALError("Could not open AL device"))
{
return(false);
}
if (_device != IntPtr.Zero)
{
#if ANDROID
// Attach activity event handlers so we can pause and resume all playing sounds
AndroidGameActivity.Paused += Activity_Paused;
AndroidGameActivity.Resumed += Activity_Resumed;
// Query the device for the ideal frequency and update buffer size so
// we can get the low latency sound path.
/*
* The recommended sequence is:
*
* Check for feature "android.hardware.audio.low_latency" using code such as this:
* import android.content.pm.PackageManager;
* ...
* PackageManager pm = getContext().getPackageManager();
* boolean claimsFeature = pm.hasSystemFeature(PackageManager.FEATURE_AUDIO_LOW_LATENCY);
* Check for API level 17 or higher, to confirm use of android.media.AudioManager.getProperty().
* Get the native or optimal output sample rate and buffer size for this device's primary output stream, using code such as this:
* import android.media.AudioManager;
* ...
* AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
* String sampleRate = am.getProperty(AudioManager.PROPERTY_OUTPUT_SAMPLE_RATE));
* String framesPerBuffer = am.getProperty(AudioManager.PROPERTY_OUTPUT_FRAMES_PER_BUFFER));
* Note that sampleRate and framesPerBuffer are Strings. First check for null and then convert to int using Integer.parseInt().
* Now use OpenSL ES to create an AudioPlayer with PCM buffer queue data locator.
*
* See http://stackoverflow.com/questions/14842803/low-latency-audio-playback-on-android
*/
int frequency = DEFAULT_FREQUENCY;
int updateSize = DEFAULT_UPDATE_SIZE;
int updateBuffers = DEFAULT_UPDATE_BUFFER_COUNT;
if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.JellyBeanMr1)
{
Android.Util.Log.Debug("OAL", Game.Activity.PackageManager.HasSystemFeature(PackageManager.FeatureAudioLowLatency) ? "Supports low latency audio playback." : "Does not support low latency audio playback.");
var audioManager = Game.Activity.GetSystemService(Context.AudioService) as AudioManager;
if (audioManager != null)
{
var result = audioManager.GetProperty(AudioManager.PropertyOutputSampleRate);
if (!string.IsNullOrEmpty(result))
{
frequency = int.Parse(result, CultureInfo.InvariantCulture);
}
result = audioManager.GetProperty(AudioManager.PropertyOutputFramesPerBuffer);
if (!string.IsNullOrEmpty(result))
{
updateSize = int.Parse(result, CultureInfo.InvariantCulture);
}
}
// If 4.4 or higher, then we don't need to double buffer on the application side.
// See http://stackoverflow.com/a/15006327
// Use the explicit value rather than a constant as the 4.2 SDK (the build SDK) does not define a constant for 4.4.
if ((int)Android.OS.Build.VERSION.SdkInt >= 19)
{
updateBuffers = 1;
}
}
else
{
Android.Util.Log.Debug("OAL", "Android 4.2 or higher required for low latency audio playback.");
}
Android.Util.Log.Debug("OAL", "Using sample rate " + frequency + "Hz and " + updateBuffers + " buffers of " + updateSize + " frames.");
// These are missing and non-standard ALC constants
const int AlcFrequency = 0x1007;
const int AlcUpdateSize = 0x1014;
const int AlcUpdateBuffers = 0x1015;
int[] attribute = new[]
{
AlcFrequency, frequency,
AlcUpdateSize, updateSize,
AlcUpdateBuffers, updateBuffers,
0
};
#elif IOS
AudioSession.Initialize();
AudioSession.Interrupted += (sender, e) => {
AudioSession.SetActive(false);
Alc.MakeContextCurrent(ContextHandle.Zero);
Alc.SuspendContext(_context);
};
AudioSession.Resumed += (sender, e) => {
AudioSession.SetActive(true);
Alc.MakeContextCurrent(_context);
Alc.ProcessContext(_context);
};
int[] attribute = new int[0];
#elif !DESKTOPGL
int[] attribute = new int[0];
#endif
#if DESKTOPGL
_acontext = new AudioContext();
_context = Alc.GetCurrentContext();
_oggstreamer = new OggStreamer();
#else
_context = Alc.CreateContext(_device, attribute);
#endif
if (CheckALError("Could not create AL context"))
{
CleanUpOpenAL();
return(false);
}
if (_context != ContextHandle.Zero)
{
Alc.MakeContextCurrent(_context);
if (CheckALError("Could not make AL context current"))
{
CleanUpOpenAL();
return(false);
}
return(true);
}
}
return(false);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
this.RecordingStatusLabel.Text = "";
this.LengthOfRecordingLabel.Text = "";
// start recording wireup
this.StartRecordingButton.TouchUpInside += (sender, e) => {
Console.WriteLine("Begin Recording");
AudioSession.Category = AudioSessionCategory.RecordAudio;
AudioSession.SetActive(true);
if (!PrepareAudioRecording())
{
RecordingStatusLabel.Text = "Error preparing";
return;
}
if (!recorder.Record())
{
RecordingStatusLabel.Text = "Error recording";
return;
}
this.stopwatch = new Stopwatch();
this.stopwatch.Start();
this.LengthOfRecordingLabel.Text = "";
this.RecordingStatusLabel.Text = "Recording";
this.StartRecordingButton.Enabled = false;
this.StopRecordingButton.Enabled = true;
this.PlayRecordedSoundButton.Enabled = false;
};
// stop recording wireup
this.StopRecordingButton.TouchUpInside += (sender, e) => {
this.recorder.Stop();
this.LengthOfRecordingLabel.Text = string.Format("{0:hh\\:mm\\:ss}", this.stopwatch.Elapsed);
this.stopwatch.Stop();
this.RecordingStatusLabel.Text = "";
this.StartRecordingButton.Enabled = true;
this.StopRecordingButton.Enabled = false;
this.PlayRecordedSoundButton.Enabled = true;
};
observer = NSNotificationCenter.DefaultCenter.AddObserver(AVPlayerItem.DidPlayToEndTimeNotification, delegate(NSNotification n) {
player.Dispose();
player = null;
});
// play recorded sound wireup
this.PlayRecordedSoundButton.TouchUpInside += (sender, e) => {
try {
Console.WriteLine("Playing Back Recording " + this.audioFilePath.ToString());
// The following line prevents the audio from stopping
// when the device autolocks. will also make sure that it plays, even
// if the device is in mute
AudioSession.Category = AudioSessionCategory.MediaPlayback;
this.player = new AVPlayer(this.audioFilePath);
this.player.Play();
} catch (Exception ex) {
Console.WriteLine("There was a problem playing back audio: ");
Console.WriteLine(ex.Message);
}
};
}
// This method is invoked when the application is about to move from active to inactive state.
// OpenGL applications should use this method to pause.
public override void OnResignActivation(UIApplication application)
{
ThreadStateBeginInterruption();
AudioSession.SetActive(false);
Debug.Write("Audio Session Deactivated");
}
void prepareAudioUnit()
{
// AudioSession
AudioSession.Initialize();
AudioSession.SetActive(true);
AudioSession.Category = AudioSessionCategory.PlayAndRecord;
AudioSession.PreferredHardwareIOBufferDuration = 0.01f;
// Creating AudioComponentDescription instance of RemoteIO Audio Unit
var cd = new AudioComponentDescription()
{
componentType = AudioComponentDescription.AudioComponentType.kAudioUnitType_Output,
componentSubType = AudioComponentDescription.AudioComponentSubType.kAudioUnitSubType_RemoteIO,
componentManufacturer = AudioComponentDescription.AudioComponentManufacturerType.kAudioUnitManufacturer_Apple,
componentFlags = 0,
componentFlagsMask = 0
};
// Getting AudioComponent from the description
_component = AudioComponent.FindComponent(cd);
// Getting Audiounit
_audioUnit = AudioUnit.CreateInstance(_component);
// turning on microphone
_audioUnit.SetEnableIO(true,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
1 // Remote Input
);
// setting AudioStreamBasicDescription
int AudioUnitSampleTypeSize = (MonoTouch.ObjCRuntime.Runtime.Arch == MonoTouch.ObjCRuntime.Arch.SIMULATOR) ? sizeof(float) : sizeof(uint);
AudioStreamBasicDescription audioFormat = new AudioStreamBasicDescription()
{
SampleRate = _sampleRate,
Format = AudioFormatType.LinearPCM,
//kAudioFormatFlagsAudioUnitCanonical = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsPacked | kAudioFormatFlagIsNonInterleaved | (kAudioUnitSampleFractionBits << kLinearPCMFormatFlagsSampleFractionShift),
FormatFlags = (AudioFormatFlags)((int)AudioFormatFlags.IsSignedInteger | (int)AudioFormatFlags.IsPacked | (int)AudioFormatFlags.IsNonInterleaved | (int)(kAudioUnitSampleFractionBits << (int)AudioFormatFlags.LinearPCMSampleFractionShift)),
ChannelsPerFrame = 2,
BytesPerPacket = AudioUnitSampleTypeSize,
BytesPerFrame = AudioUnitSampleTypeSize,
FramesPerPacket = 1,
BitsPerChannel = 8 * AudioUnitSampleTypeSize,
Reserved = 0
};
_audioUnit.SetAudioFormat(audioFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Input,
0 // Remote output
);
_audioUnit.SetAudioFormat(audioFormat,
AudioUnit.AudioUnitScopeType.kAudioUnitScope_Output,
1 // Remote input
);
// setting callback
/*
* if (MonoTouch.ObjCRuntime.Runtime.Arch == MonoTouch.ObjCRuntime.Arch.SIMULATOR)
* _audioUnit.RenderCallback += new EventHandler<AudioUnitEventArgs>(simulator_callback);
* else
* _audioUnit.RenderCallback += new EventHandler<AudioUnitEventArgs>(device_callback);
*/
_audioUnit.RenderCallback += new EventHandler <AudioUnitEventArgs>(_callback);
// initialize
_audioUnit.Initialize();
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
View.BackgroundColor = UIColor.White;
var image = new UIImageView();
View.AddSubview(image);
image.Image = UIImage.FromBundle("microphone.png");
var recordingStatusLabel = new UILabel
{
Text = "",
TextColor = Constants.MainColor,
};
View.AddSubview(recordingStatusLabel);
var lengthOfRecordingLabel = new UILabel
{
Text = "",
TextColor = Constants.MainColor,
};
View.AddSubview(lengthOfRecordingLabel);
var startRecordingButton = new UIButton
{
};
View.AddSubview(startRecordingButton);
startRecordingButton.SetTitle("Start", UIControlState.Normal);
startRecordingButton.SetTitleColor(Constants.MainColor, UIControlState.Normal);
var stopRecordingButton = new UIButton
{
};
View.AddSubview(stopRecordingButton);
stopRecordingButton.SetTitle("Stop", UIControlState.Normal);
stopRecordingButton.SetTitleColor(Constants.MainColor, UIControlState.Normal);
var playRecordedSoundButton = new UIButton
{
};
View.AddSubview(playRecordedSoundButton);
playRecordedSoundButton.SetTitle("Play", UIControlState.Normal);
playRecordedSoundButton.SetTitleColor(Constants.MainColor, UIControlState.Normal);
// start recording wireup
startRecordingButton.TouchUpInside += (sender, e) =>
{
AudioSession.Category = AudioSessionCategory.RecordAudio;
AudioSession.SetActive(true);
if (!PrepareAudioRecording())
{
recordingStatusLabel.Text = "Error preparing";
return;
}
if (!Recorder.Record())
{
recordingStatusLabel.Text = "Error recording";
return;
}
Stopwatch = new Stopwatch();
Stopwatch.Start();
lengthOfRecordingLabel.Text = "";
recordingStatusLabel.Text = "Recording";
startRecordingButton.Enabled = false;
stopRecordingButton.Enabled = true;
};
// stop recording wireup
stopRecordingButton.TouchUpInside += (sender, e) =>
{
Recorder.Stop();
lengthOfRecordingLabel.Text = string.Format("{0:hh\\:mm\\:ss}", Stopwatch.Elapsed);
Stopwatch.Stop();
recordingStatusLabel.Text = "";
startRecordingButton.Enabled = true;
stopRecordingButton.Enabled = false;
};
Observer = NSNotificationCenter.DefaultCenter.AddObserver(AVPlayerItem.DidPlayToEndTimeNotification, delegate(NSNotification n)
{
Player.Dispose();
Player = null;
});
// play recorded sound wireup
playRecordedSoundButton.TouchUpInside += (sender, e) =>
{
try
{
Console.WriteLine("Playing Back Recording " + AudioFilePath.ToString());
// The following line prevents the audio from stopping
// when the device autolocks. will also make sure that it plays, even
// if the device is in mute
AudioSession.Category = AudioSessionCategory.MediaPlayback;
Player = new AVPlayer(AudioFilePath);
Player.Play();
}
catch (Exception ex)
{
Console.WriteLine("There was a problem playing back audio: ");
Console.WriteLine(ex.Message);
}
};
#region Layout
var topPad = (float)NavigationController.NavigationBar.Frame.Size.Height + 40f;
View.ConstrainLayout(() =>
image.Frame.Top == View.Frame.Top + topPad &&
image.Frame.GetCenterX() == View.Frame.GetCenterX() &&
image.Frame.Height == 100f &&
image.Frame.Width == 100f &&
startRecordingButton.Frame.Top == image.Frame.Bottom + 30f &&
startRecordingButton.Frame.Left == View.Frame.Left + 30f &&
startRecordingButton.Frame.Height == Constants.ControlsHeight &&
startRecordingButton.Frame.Width == 100f &&
recordingStatusLabel.Frame.Top == image.Frame.Bottom + 30f &&
recordingStatusLabel.Frame.Left == startRecordingButton.Frame.Right + 30f &&
recordingStatusLabel.Frame.Height == Constants.ControlsHeight &&
recordingStatusLabel.Frame.Width == 100f &&
stopRecordingButton.Frame.Top == startRecordingButton.Frame.Bottom + 30f &&
stopRecordingButton.Frame.Left == View.Frame.Left + 30f &&
stopRecordingButton.Frame.Height == Constants.ControlsHeight &&
stopRecordingButton.Frame.Width == 100f &&
lengthOfRecordingLabel.Frame.Top == startRecordingButton.Frame.Bottom + 30f &&
lengthOfRecordingLabel.Frame.Left == stopRecordingButton.Frame.Right + 30f &&
lengthOfRecordingLabel.Frame.Height == Constants.ControlsHeight &&
lengthOfRecordingLabel.Frame.Width == 100f &&
playRecordedSoundButton.Frame.Top == stopRecordingButton.Frame.Bottom + 30f &&
playRecordedSoundButton.Frame.Left == View.Frame.Left + 30f &&
playRecordedSoundButton.Frame.Height == Constants.ControlsHeight &&
playRecordedSoundButton.Frame.Width == 100f
);
#endregion
}
void OnAudioSessionResumed(object sender, EventArgs e)
{
AudioSession.SetActive(true);
audioUnit.Initialize();
audioUnit.Start();
}