public async Task StartRecordingAsync(IRandomAccessStream stream)
{
ThrowIfDisposed();
if (IsRecording || _isStarting)
return;
_isStarting = true;
_device = await AudioVideoCaptureDevice.OpenForAudioOnlyAsync();
//_device.AudioEncodingFormat = CameraCaptureAudioFormat.Aac; // AAC is default
_recordingStream = stream;
await _device.StartRecordingToStreamAsync(_recordingStream);
IsRecording = true;
_isStarting = false;
}
public async Task StartRecordingAsync()
{
_mic = await AudioVideoCaptureDevice.OpenForAudioOnlyAsync();
_mic.AudioEncodingFormat = CameraCaptureAudioFormat.Amr;
try
{
await CreateFileStreamForAudioAsync(recordAudioFileName);
await _mic.StartRecordingToStreamAsync(_randomAccessStream);
}
catch (Exception ex)
{
throw ex;
}
}
// Set recording state: start recording.
private async void StartVideoRecording()
{
try
{
// Connect fileSink to captureSource.
if (_videoCaptureDevice != null)
{
if (_currentAppState == ButtonState.Ready)
{
// Create the VideoBrush for the viewfinder.
_videoRecorderBrush = new VideoBrush();
_videoRecorderBrush.SetSource(_videoCaptureDevice);
// Display the viewfinder image on the rectangle.
ViewfinderRectangle.Fill = _videoRecorderBrush;
}
if (_currentAppState != ButtonState.Initialized)
{
_videoRecorderBrush = new VideoBrush();
_videoRecorderBrush.SetSource(_videoCaptureDevice);
// Display the viewfinder image on the rectangle.
ViewfinderRectangle.Fill = _videoRecorderBrush;
_stream = await _outputFile.OpenAsync(FileAccessMode.ReadWrite);
await _stream.FlushAsync();
}
await _videoCaptureDevice.StartRecordingToStreamAsync(_stream);
_dt.Start();
SaveThumbnail();
}
// Set the button states and the message.
UpdateUi(ButtonState.Recording, "Recording...");
}
// If recording fails, display an error.
catch (Exception e)
{
Dispatcher.BeginInvoke(delegate
{
txtDebug.Text = "ERROR1: " + e.Message;
});
}
}
public async Task StartRecordingAsync()
{
_mic = await AudioVideoCaptureDevice.OpenForAudioOnlyAsync();
_mic.AudioEncodingFormat = CameraCaptureAudioFormat.Amr;
try
{
await CreateFileStreamForAudioAsync(recordAudioFileName);
await _mic.StartRecordingToStreamAsync(_randomAccessStream);
}
catch (Exception ex)
{
throw ex;
}
}
// 开始录像
private async void btnCapture_Click(object sender, RoutedEventArgs e)
{
try
{
// 获取应用程序数据存储文件夹
StorageFolder applicationFolder = ApplicationData.Current.LocalFolder;
// 在指定的应用程序数据存储文件夹内创建指定的文件
StorageFile storageFile = await applicationFolder.CreateFileAsync(recordVideoFileName, CreationCollisionOption.ReplaceExisting);
// 打开文件流，准备写入录像数据
_stream = await storageFile.OpenAsync(FileAccessMode.ReadWrite);
// 录制视频到指定的流
await _captureDevice.StartRecordingToStreamAsync(_stream);
btnCapture.IsEnabled = false;
btnStop.IsEnabled = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
async void ActivateCamera()
{
if (_dev == null)
{
if (AudioVideoCaptureDevice.AvailableSensorLocations.Contains(CameraSensorLocation.Back))
{
_dev = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back, AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back).First());
_videoBrush = new VideoBrush();
_videoBrush.SetSource(_dev);
MainPage_OrientationChanged(null, null);
this.videoRect.Fill = _videoBrush;
StorageFolder localFolder = ApplicationData.Current.LocalFolder;
StorageFile storageFile = await localFolder.CreateFileAsync("CameraMovie.mp4", CreationCollisionOption.ReplaceExisting);
_path = storageFile.Path;
_sst = await storageFile.OpenAsync(FileAccessMode.ReadWrite);
await _dev.StartRecordingToStreamAsync(_sst);
}
}
}
private async Task StartRecordingAsync()
{
await mic.StartRecordingToStreamAsync(sst);
}