private static void UnregisterDeviceStateChangedEvent()
{
Native.RemoveDeviceStateChangedCallback(_deviceStateChangedId).
ThrowIfError("Failed to remove the event handler.");
_deviceStateChangedCallback = null;
}
/// <summary>
/// Returns the state of recorder device.
/// </summary>
/// <exception cref="ArgumentException"><paramref name="type"/> is invalid.</exception>
/// <since_tizen> 4 </since_tizen>
public static RecorderDeviceState GetDeviceState(RecorderType type)
{
ValidationUtil.ValidateEnum(typeof(RecorderType), type, nameof(type));
Native.GetDeviceState(type, out var state).ThrowIfError("Failed to get device state");
return(state);
}
/// <summary>
/// Returns the peak audio input level in dB since the last call to this method.
/// </summary>
/// <remarks>
/// 0dB indicates the maximum input level, -300dB indicates the minimum input level.<br/>
/// <br/>
/// The recorder must be in the <see cref="RecorderState.Recording"/> or the <see cref="RecorderState.Paused"/> state.
/// </remarks>
/// <exception cref="ObjectDisposedException">The recorder already has been disposed of.</exception>
/// <since_tizen> 4 </since_tizen>
public double GetPeakAudioLevel()
{
ValidateState(RecorderState.Recording, RecorderState.Paused);
Native.GetAudioLevel(Handle, out var level).ThrowIfError("Failed to get audio level.");
return(level);
}
private void RegisterInterruptedEvent()
{
_interruptedCallback = (policy, previousState, currentState, _) =>
{
Interrupted?.Invoke(this, new RecorderInterruptedEventArgs(policy, previousState, currentState));
};
Native.SetInterruptedCallback(_handle, _interruptedCallback, IntPtr.Zero).
ThrowIfError("Failed to initialize Interrupted event");
}
/// <summary>
/// Cancels the recording.<br/>
/// The recording data is discarded and not written in the recording file.
/// </summary>
/// <remarks>
/// The recorder must be in the <see cref="RecorderState.Recording"/> or the <see cref="RecorderState.Paused"/> state.
/// The state of the recorder will be the <see cref="RecorderState.Ready"/> after the operation.
/// </remarks>
/// <exception cref="InvalidOperationException">
/// The recorder is not in the valid state.<br/>
/// -or-<br/>
/// The method is called in <see cref="AudioStreamStoring"/> event.<br/>
/// -or-<br/>
/// An internal error occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">The recorder already has been disposed of.</exception>
/// <since_tizen> 3 </since_tizen>
public void Cancel()
{
ThrowIfAccessedInAudioStreamStoring();
ValidateState(RecorderState.Recording, RecorderState.Paused);
Native.Cancel(Handle).ThrowIfError("Failed to cancel the recording");
SetState(RecorderState.Ready);
}
/// <summary>
/// Stops recording and saves the result.
/// </summary>
/// <remarks>
/// The recorder must be in the <see cref="RecorderState.Recording"/> or the <see cref="RecorderState.Paused"/> state.
/// The state of the recorder will be the <see cref="RecorderState.Ready"/> after the operation.
/// </remarks>
/// <exception cref="InvalidOperationException">
/// The recorder is not in the valid state.<br/>
/// -or-<br/>
/// The method is called in <see cref="AudioStreamStoring"/> event.<br/>
/// -or-<br/>
/// An internal error occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">The recorder already has been disposed of.</exception>
/// <since_tizen> 3 </since_tizen>
public void Commit()
{
ThrowIfAccessedInAudioStreamStoring();
ValidateState(RecorderState.Recording, RecorderState.Paused);
Native.Commit(Handle).ThrowIfError("Failed to save the recorded content");
SetState(RecorderState.Ready);
}
private void RegisterRecordingProgressEvent()
{
_recordingProgressCallback = (ulong elapsedTime, ulong fileSize, IntPtr userData) =>
{
RecordingStatusChanged?.Invoke(this, new RecordingStatusChangedEventArgs((long)elapsedTime, (long)fileSize));
};
Native.SetRecordingProgressCallback(_handle, _recordingProgressCallback, IntPtr.Zero).
ThrowIfError("Failed to initialize RecordingStatusChanged event");
}
private void RegisterRecordingLimitReachedEvent()
{
_recordingLimitReachedCallback = (RecordingLimitType type, IntPtr userData) =>
{
RecordingLimitReached?.Invoke(this, new RecordingLimitReachedEventArgs(type));
};
Native.SetLimitReachedCallback(_handle, _recordingLimitReachedCallback, IntPtr.Zero).
ThrowIfError("Failed to initialize RecordingLimitReached event");
}
private void RegisterInterruptingEvent()
{
_interruptingCallback = (policy, state, _) =>
{
Interrupting?.Invoke(this, new RecorderInterruptingEventArgs(policy, state));
};
Native.SetInterruptStartedCallback(_handle, _interruptingCallback).
ThrowIfError("Failed to initialize Interrupting event");
}
private static void RegisterDeviceStateChangedEvent()
{
_deviceStateChangedCallback = (type, state, _) =>
{
_deviceStateChanged?.Invoke(null, new RecorderDeviceStateChangedEventArgs(type, state));
};
Native.AddDeviceStateChangedCallback(_deviceStateChangedCallback, IntPtr.Zero, out _deviceStateChangedId).
ThrowIfError("Failed to add the event handler.");
}
private void RegisterErrorCallback()
{
_errorOccurredCallback = (error, state, _) =>
{
ErrorOccurred?.Invoke(this, new RecordingErrorOccurredEventArgs(error, state));
};
Native.SetErrorCallback(_handle, _errorOccurredCallback, IntPtr.Zero).
ThrowIfError("Failed to initialize ErrorOccurred event");
}
/// <summary>
/// Apply the audio stream policy.
/// </summary>
/// <remarks>
/// The recorder must be in the <see cref="RecorderState.Idle"/> or the <see cref="RecorderState.Ready"/> state.
/// </remarks>
/// <param name="policy">The policy to apply.</param>
/// <exception cref="ArgumentNullException"><paramref name="policy"/> is null.</exception>
/// <exception cref="InvalidOperationException">
/// The recorder is not in the valid state.<br/>
/// -or-<br/>
/// <paramref name="policy"/> is not supported for the recorder.<br/>
/// -or-<br/>
/// An internal error occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// The recorder already has been disposed of.<br/>
/// -or-<br/>
/// <paramref name="policy"/> already has been disposed of.
/// </exception>
/// <since_tizen> 4 </since_tizen>
public void ApplyAudioStreamPolicy(AudioStreamPolicy policy)
{
if (policy == null)
{
throw new ArgumentNullException(nameof(policy));
}
ValidateState(RecorderState.Idle, RecorderState.Ready);
Native.SetAudioStreamPolicy(Handle, policy.Handle).ThrowIfError("Failed to apply the audio stream policy.");
}
private void RegisterStateChangedEvent()
{
_stateChangedCallback = (RecorderState previous, RecorderState current, bool byPolicy, IntPtr userData) =>
{
SetState(current);
StateChanged?.Invoke(this, new RecorderStateChangedEventArgs(previous, current, byPolicy));
};
Native.SetStateChangedCallback(_handle, _stateChangedCallback, IntPtr.Zero).
ThrowIfError("Failed to initialize StateChanged event");
}
private static NativeHandle CreateHandle(Camera camera)
{
if (camera == null)
{
throw new ArgumentNullException(nameof(camera));
}
Native.CreateVideo(camera.Handle, out var handle).
ThrowIfError("Failed to create video recorder.");
return(handle);
}
private static IEnumerable <Size> LoadVideoResolutions(CameraDevice device)
{
using (var camera = new Camera(device))
{
Native.CreateVideo(camera.Handle, out var handle).ThrowIfError("Failed to get the resolutions");
using (handle)
{
return(GetVideoResolutions(handle));
}
}
}
private void RegisterMuxedStreamEvent()
{
_muxedStreamCallback = (IntPtr stream, int streamSize, ulong offset, IntPtr userData) =>
{
using (var buffer = new ScopedMediaBuffer(stream, streamSize, true))
{
MuxedStreamDelivered?.Invoke(this, new MuxedStreamDeliveredEventArgs(buffer, offset));
}
};
Native.SetMuxedStreamCallback(_handle, _muxedStreamCallback, IntPtr.Zero).
ThrowIfError("Failed to initialize MuxedStreamDelivered event");
}
/// <summary>
/// Prepares the media recorder for recording.
/// </summary>
/// <remarks>
/// The recorder should be in the <see cref="RecorderState.Idle"/> state.
/// The state of the recorder will be the <see cref="RecorderState.Ready"/> after this.
/// It has no effect if the current state is the <see cref="RecorderState.Ready"/>.
/// </remarks>
/// <exception cref="InvalidOperationException">
/// The recorder is not in the valid state.<br/>
/// -or-<br/>
/// An internal error occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">The recorder already has been disposed of.</exception>
/// <since_tizen> 3 </since_tizen>
public void Prepare()
{
if (_state == RecorderState.Ready)
{
return;
}
ValidateState(RecorderState.Idle);
Native.Prepare(Handle).ThrowIfError("Failed to prepare media recorder");
SetState(RecorderState.Ready);
}
/// <summary>
/// Pauses the recording.
/// </summary>
/// <remarks>
/// The recorder should be in the <see cref="RecorderState.Recording"/> state.
/// The state of the recorder will be the <see cref="RecorderState.Paused"/> after this.
/// It has no effect if the current state is the <see cref="RecorderState.Paused"/>.
/// </remarks>
/// <exception cref="InvalidOperationException">
/// The recorder is not in the valid state.<br/>
/// -or-<br/>
/// An internal error occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">The recorder already has been disposed of.</exception>
/// <since_tizen> 3 </since_tizen>
public void Pause()
{
if (_state == RecorderState.Paused)
{
return;
}
ValidateState(RecorderState.Recording);
Native.Pause(Handle).ThrowIfError("Failed to pause the media recorder");
SetState(RecorderState.Paused);
}
/// <summary>
/// Resets the media recorder.
/// </summary>
/// <remarks>
/// The recorder should be in the <see cref="RecorderState.Ready"/> state.
/// The state of recorder will be the <see cref="RecorderState.Idle"/> after this.
/// It has no effect if the current state is the <see cref="RecorderState.Idle"/>.
/// </remarks>
/// <exception cref="InvalidOperationException">
/// The recorder is not in the valid state.<br/>
/// -or-<br/>
/// An internal error occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">The recorder already has been disposed of.</exception>
/// <since_tizen> 3 </since_tizen>
public void Unprepare()
{
ThrowIfAccessedInAudioStreamStoring();
if (_state == RecorderState.Idle)
{
return;
}
ValidateState(RecorderState.Ready);
Native.Unprepare(Handle).ThrowIfError("Failed to reset the media recorder");
SetState(RecorderState.Idle);
}
private static IEnumerable <Size> GetVideoResolutions(NativeHandle handle)
{
var result = new List <Size>();
var ret = Native.GetVideoResolutions(handle, (w, h, _) => { result.Add(new Size(w, h)); return(true); });
if (ret == RecorderErrorCode.NotSupported)
{
throw new NotSupportedException("Video recording is not supported.");
}
ret.ThrowIfError("Failed to load the resolutions");
return(result.AsReadOnly());
}
private static IEnumerable <Size> LoadVideoResolutions(CameraDevice device)
{
if (!Features.IsSupported(RecorderFeatures.VideoRecorder))
{
throw new NotSupportedException("Video Recorder is not supported.");
}
using (var camera = new Camera(device))
{
Native.CreateVideo(camera.Handle, out var handle).ThrowIfError("Failed to get the resolutions");
using (handle)
{
return(GetVideoResolutions(handle));
}
}
}
private static NativeHandle CreateHandle(Camera camera)
{
if (camera == null)
{
throw new ArgumentNullException(nameof(camera));
}
if (!Features.IsSupported(RecorderFeatures.VideoRecorder))
{
throw new NotSupportedException("Video Recorder is not supported.");
}
Native.CreateVideo(camera.Handle, out var handle).
ThrowIfError("Failed to create video recorder.");
return(handle);
}
private void RegisterAudioStreamDeliveredEvent()
{
_audioStreamCallback = (stream, streamSize, type, channel, recordingTime, _) =>
{
var handler = AudioStreamStoring;
if (handler != null)
{
_isInAudioStreamStoring.Value = true;
using (var buffer = new ScopedMediaBuffer(stream, streamSize))
{
handler.Invoke(this,
new AudioStreamStoringEventArgs(buffer, type, channel, recordingTime));
}
}
};
Native.SetAudioStreamCallback(_handle, _audioStreamCallback, IntPtr.Zero).
ThrowIfError("Failed to initialize AudioStreamStoring event");
}
/// <summary>
/// Starts the recording.
/// </summary>
/// <remarks>
/// The recorder must be in the <see cref="RecorderState.Ready"/> state.
/// The state of the recorder will be the <see cref="RecorderState.Recording"/> after this. <br/>
/// <br/>
/// If the specified path exists, the file is removed automatically and updated by new one.<br/>
/// The mediastorage privilege(http://tizen.org/privilege/mediastorage) is required if the path is relevant to media storage.<br/>
/// The externalstorage privilege(http://tizen.org/privilege/externalstorage) is required if the path is relevant to external storage.<br/>
/// <br/>
/// In the video recorder, some preview format does not support record mode.
/// You should use the default preview format or the <see cref="CameraPixelFormat.Nv12"/> in the record mode.
/// </remarks>
/// <param name="savePath">The file path for recording result.</param>
/// <privilege>http://tizen.org/privilege/recorder</privilege>
/// <exception cref="InvalidOperationException">
/// The recorder is not in the valid state.<br/>
/// -or-<br/>
/// The preview format of the camera is not supported.<br/>
/// -or-<br/>
/// An internal error occurred.
/// </exception>
/// <exception cref="ObjectDisposedException">The recorder already has been disposed of.</exception>
/// <exception cref="ArgumentNullException"><paramref name="savePath"/> is null.</exception>
/// <exception cref="ArgumentException"><paramref name="savePath"/> is a zero-length string, contains only white space.</exception>
/// <exception cref="UnauthorizedAccessException">Caller does not have required privilege.</exception>
/// <seealso cref="Commit"/>
/// <seealso cref="Cancel"/>
/// <since_tizen> 4 </since_tizen>
public void Start(string savePath)
{
ValidateState(RecorderState.Ready);
if (savePath == null)
{
throw new ArgumentNullException(nameof(savePath));
}
if (string.IsNullOrWhiteSpace(savePath))
{
throw new ArgumentException($"{nameof(savePath)} is an empty string.", nameof(savePath));
}
Native.SetFileName(Handle, savePath).ThrowIfError("Failed to set save path.");
Native.Start(Handle).ThrowIfError("Failed to start the media recorder");
SetState(RecorderState.Recording);
}
private RecorderErrorCode GetVideoEncoders(NativeHandle handle, List <RecorderVideoCodec> result) =>
Native.GetVideoEncoders(handle, (codec, _) => { result.Add(codec); return(true); });
private RecorderErrorCode GetFileFormats(NativeHandle handle, List <RecorderFileFormat> result) =>
Native.GetFileFormats(handle, (format, _) => { result.Add(format); return(true); });