private async Task InitializeCamera()
{
if (Options.UseFrontCameraIfAvailable.HasValue && Options.UseFrontCameraIfAvailable.Value)
{
try
{
var frontCameraCaptureResolutions = AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Front);
var resolution = GetResolution(frontCameraCaptureResolutions.OrderBy(r => r.Width * r.Height));
_photoCamera = await AudioVideoCaptureDevice.OpenForVideoOnlyAsync(CameraSensorLocation.Front, resolution);
}
catch (Exception ex)
{
MobileBarcodeScanner.Log("Failed to create front facing camera: {0}", ex);
}
}
MobileBarcodeScanner.Log("InitializeCamera");
if (_photoCamera == null)
{
var backCameraCaptureResolutions = AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back);
var resolution = GetResolution(backCameraCaptureResolutions.OrderBy(r => r.Width * r.Height));
_photoCamera = await AudioVideoCaptureDevice.OpenForVideoOnlyAsync(CameraSensorLocation.Back, resolution);
}
IsAnalyzing = true;
OnPhotoCameraInitialized(this, new CameraOperationCompletedEventArgs(true, null));
MobileBarcodeScanner.Log("Wired up Initizialied");
}
/// <summary>
/// Turn the lamp off
/// </summary>
public async void TurnOff()
{
if (_avDevice == null)
{
_avDevice = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back).First());
}
// turn flashlight on
var supportedCameraModes = AudioVideoCaptureDevice
.GetSupportedPropertyValues(CameraSensorLocation.Back, KnownCameraAudioVideoProperties.VideoTorchMode);
if (supportedCameraModes.ToList().Contains((UInt32)VideoTorchMode.On))
{
_avDevice.SetProperty(KnownCameraAudioVideoProperties.VideoTorchMode, VideoTorchMode.Off);
// set flash power to maxinum
_avDevice.SetProperty(KnownCameraAudioVideoProperties.VideoTorchPower,
AudioVideoCaptureDevice.GetSupportedPropertyRange(CameraSensorLocation.Back, KnownCameraAudioVideoProperties.VideoTorchPower).Max);
}
else
{
Debug.WriteLine("Torch Mode not supported by this device");
}
}
/// <summary>
/// Turn the lamp on
/// </summary>
public async void TurnOn()
{
// further information about accessing the camera light can be found here:
// http://developer.nokia.com/community/wiki/Using_the_camera_light_in_Windows_Phone_7,_8_and_8.1
if (_avDevice == null)
{
_avDevice = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back).First());
}
// turn flashlight on
var supportedCameraModes = AudioVideoCaptureDevice
.GetSupportedPropertyValues(CameraSensorLocation.Back, KnownCameraAudioVideoProperties.VideoTorchMode);
if (supportedCameraModes.ToList().Contains((UInt32)VideoTorchMode.On))
{
_avDevice.SetProperty(KnownCameraAudioVideoProperties.VideoTorchMode, VideoTorchMode.On);
// set flash power to maxinum
_avDevice.SetProperty(KnownCameraAudioVideoProperties.VideoTorchPower,
AudioVideoCaptureDevice.GetSupportedPropertyRange(CameraSensorLocation.Back, KnownCameraAudioVideoProperties.VideoTorchPower).Max);
}
else
{
Debug.WriteLine("Torch Mode not supported by this device");
}
}
public async void switchOff(string jsonArgs)
{
if (hasFlashlight())
{
if (this.Device == null)
{
this.Device = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back)[0]);
}
bool disposed = false;
try
{
this.Device.SetProperty(KnownCameraAudioVideoProperties.VideoTorchMode, VideoTorchMode.Off);
}
catch (ObjectDisposedException ignore)
{
// may be thrown when the app is paused/resumed
disposed = true;
}
if (disposed)
{
this.Device = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back)[0]);
this.Device.SetProperty(KnownCameraAudioVideoProperties.VideoTorchMode, VideoTorchMode.Off);
}
DispatchCommandResult(new PluginResult(PluginResult.Status.OK));
}
else
{
DispatchCommandResult(new PluginResult(PluginResult.Status.ERROR, "Device is not capable of using the flashlight. Please test with flashlight.available()"));
}
}
private async Task <AudioVideoCaptureDevice> GetCaptureDevice()
{
AudioVideoCaptureDevice captureDevice =
await
AudioVideoCaptureDevice.OpenAsync(_sensorLocation,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(_sensorLocation)
.First());
return(captureDevice);
}
private async void FlashLight_Checked(object sender, RoutedEventArgs e)
{
if (!_cameraIsOn)
{
_avDevice = await AudioVideoCaptureDevice.OpenAsync(SensorLocation,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(SensorLocation).First());
_cameraIsOn = true;
}
if (_cameraIsOn)
{
Common.TurnOnFlashlight(FlashLight, _avDevice, SensorLocation);
}
}
async void InitializeFlashlight()
{
if (App.AvDevice == null)
{
var sensorLocation = CameraSensorLocation.Back;
// get the AudioViceoCaptureDevice
App.AvDevice = await AudioVideoCaptureDevice.OpenAsync(sensorLocation,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(sensorLocation).First());
}
if (UseToggleButton.IsChecked == true)
{
TurnOnButton();
}
}
public async void switchOff(string jsonArgs)
{
if (hasFlashlight())
{
if (this.Device == null)
{
this.Device = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back)[0]);
}
this.Device.SetProperty(KnownCameraAudioVideoProperties.VideoTorchMode, VideoTorchMode.Off);
DispatchCommandResult(new PluginResult(PluginResult.Status.OK));
}
else
{
DispatchCommandResult(new PluginResult(PluginResult.Status.ERROR, "Device is not capable of using the flashlight. Please test with flashlight.available()"));
}
}
public async Task InitAsync()
{
Debug.Assert(_status == StatusEnum.Uninitialized);
if (AudioVideoCaptureDevice.AvailableSensorLocations.Contains(_location))
{
var resolutions = AudioVideoCaptureDevice.GetAvailableCaptureResolutions(_location);
if (resolutions.Count > 0)
{
var resolution = resolutions.First();
_device = await AudioVideoCaptureDevice.OpenForVideoOnlyAsync(_location, resolution);
if ((object)_device != null)
{
var values = AudioVideoCaptureDevice.GetSupportedPropertyValues(_location, KnownCameraAudioVideoProperties.VideoTorchMode);
if (values.Contains((UInt32)VideoTorchMode.On))
{
// Done, it looks like we have it!
_status = StatusEnum.Ready;
}
else
{
_status = StatusEnum.CannotFindTorchOnDevice;
_device.Dispose();
_device = null;
}
}
else
{
_status = StatusEnum.CannotAccessCameraDevice;
}
}
else
{
_status = StatusEnum.CannotFindValidResolutionForCamera;
}
}
else
{
_status = StatusEnum.CannotFindBackCamera;
}
}
private async void SetupFlash()
{
try
{
ButtonVisibility = Visibility.Collapsed;
InitializeVisibility = Visibility.Visible;
// get the AudioViceoCaptureDevice
_avDevice = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back).First());
ButtonVisibility = Visibility.Visible;
InitializeVisibility = Visibility.Collapsed;
}
catch (Exception ex)
{
}
}
private async void PhoneApplicationPage_Loaded(object sender, System.Windows.RoutedEventArgs e)
{
_tutorial.IsOpen = AppSetting.IsShowTutorial();
//Starting checking
if (!_checkState.IsEnabled)
{
_checkState.Start();
}
CoverStoryboard.Begin();
#region Check NetWork State
Common.SetStateNetWork(Wifi, WifiState, Model.Wifi.Enabled());
Common.SetStateNetWork(Cellular, CellularState, Model.Cellular.Enabled());
//Common.SetStateNetWork(Bluetooth, BluetoothState, Model.Bluetooth.Enabled().Result);
Common.SetStateNetWork(Location, LocationState, Model.Location.Enabled());
Common.SetStateNetWork(Airplane, AirplaneState, Model.Airplane.Enabled());
#endregion
if (NavigationContext.QueryString.TryGetValue(Key, out _value))
{
if (_value == ShortcutValue.FlashLight)
{
if (!_cameraIsOn)
{
_avDevice = await AudioVideoCaptureDevice.OpenAsync(SensorLocation,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(SensorLocation).First());
_cameraIsOn = true;
}
if (_cameraIsOn)
{
Common.TurnOnFlashlight(FlashLight, _avDevice, SensorLocation);
}
}
}
}
private void Summary()
{
lblMsg.Text = "";
// 获取电话上的可用摄像头
foreach (CameraSensorLocation csl in AudioVideoCaptureDevice.AvailableSensorLocations)
{
// Back 或 Front
lblMsg.Text += "摄像头：" + csl.ToString();
lblMsg.Text += System.Environment.NewLine;
// 摄像所支持的分辨率
lblMsg.Text += "摄像的可用分辨率：";
foreach (var size in AudioVideoCaptureDevice.GetAvailableCaptureResolutions(csl))
{
lblMsg.Text += size.Width + "*" + size.Height + " ";
}
lblMsg.Text += System.Environment.NewLine;
lblMsg.Text += System.Environment.NewLine;
}
lblMsg.Text += "终端所支持的视频编码格式：";
foreach (CameraCaptureVideoFormat format in AudioVideoCaptureDevice.SupportedVideoEncodingFormats)
{
lblMsg.Text += format.ToString() + " ";
}
lblMsg.Text += System.Environment.NewLine;
lblMsg.Text += "终端所支持的音频编码格式：";
foreach (CameraCaptureAudioFormat format in AudioVideoCaptureDevice.SupportedAudioEncodingFormats)
{
lblMsg.Text += format.ToString() + " ";
}
lblMsg.Text += System.Environment.NewLine;
}
private async void VideoRecord_Loaded(object sender, RoutedEventArgs e)
{
// 一些概述类的说明
Summary();
// 是否有后置摄像头
if (AudioVideoCaptureDevice.AvailableSensorLocations.Contains(CameraSensorLocation.Back))
{
// 获取后置摄像头摄像时的可用分辨率
IReadOnlyList <Windows.Foundation.Size> supportedResolutions = AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back);
Windows.Foundation.Size resolution = supportedResolutions[0];
try
{
// 让后置摄像头以指定的分辨率捕获镜头内容
_captureDevice = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back, resolution);
// AudioVideoCaptureDevice.OpenForVideoOnlyAsync() - 仅捕获视频
// AudioVideoCaptureDevice.OpenForAudioOnlyAsync() - 仅捕获音频
// 录像失败时触发的事件
_captureDevice.RecordingFailed += _captureDevice_RecordingFailed;
/*
* SetCaptureResolutionAsync() - 设置摄像的分辨率
* CaptureResolution - 获取当前摄像的分辨率
* VideoEncodingFormat - 当前的视频编码格式
* AudioEncodingFormat - 当前的音频编码格式
* FocusRegion - 对焦区域
* SensorLocation - 当前摄像头的位置（CameraSensorLocation 枚举：Back 或 Front）
* SensorRotationInDegrees - 获取摄像头传感器相对于屏幕的旋转度数
* FocusAsync() - 自动对焦
* ResetFocusAsync() - 复位对焦
*/
/*
* KnownCameraAudioVideoProperties 属性集包括
* VideoFrameRate - 每秒抓取的视频帧数
* H264EncodingProfile - H264 编码的 profile（H264EncoderProfile 枚举）
* H264EncodingLevel - H264 编码的 level（H264EncoderLevel 枚举）
* H264EnableKeyframes - 是否启用关键帧
* H264QuantizationParameter - QP 值，低的 QP 会保留大部分空间的详细信息，从而达到最佳质量，高的 QP 会在一定程度上造成质量的损失，但能帮助编码器实现较低的比特率
* H264RequestDropNextNFrames - 指定编码器应丢弃的帧数
* H264RequestIdrFrame - 此属性设置为 true 时，系统请求编码流程进行瞬时解码刷新(IDR)
* UnmuteAudioWhileRecording - 此属性设置为 true 时，能在记录期间为音频取消静音
* VideoTorchMode - 录像时如何使用闪光灯（VideoTorchMode 枚举：Off, Auto, On）
* VideoTorchPower - 录像时闪光灯的亮度，无单位且不同设备上的值不同
*/
_captureDevice.SetProperty(KnownCameraAudioVideoProperties.H264EncodingProfile, H264EncoderProfile.Baseline);
/*
* KnownCameraGeneralProperties 属性集包括
* AutoFocusRange - 自动对焦的范围（AutoFocusRange 枚举，包括微距等）
* EncodeWithOrientation - 视频编码时的旋转角度，必须是 90 的倍数
* SpecifiedCaptureOrientation - 元数据中的旋转角度，必须是 90 的倍数
* IsShutterSoundEnabledByUser - 用户是否启用了快门声音，只读
* IsShutterSoundRequiredForRegion - 运行应用程序的区域是否需要快门声音（有些区域为了保护隐私，要求照相或录像必须要有快门声音），只读
* PlayShutterSoundOnCapture - 指定捕获时是否播放快门声音
* ManualFocusPosition - 手动对焦的位置
*/
_captureDevice.SetProperty(KnownCameraGeneralProperties.AutoFocusRange, AutoFocusRange.Normal);
_captureDevice.SetProperty(KnownCameraGeneralProperties.EncodeWithOrientation, _captureDevice.SensorRotationInDegrees);
// 获取指定属性的值
// _captureDevice.GetProperty(KnownCameraGeneralProperties.IsShutterSoundEnabledByUser);
/*
* 获取指定的范围类属性在当前摄像头中所允许的值的范围
*/
// AudioVideoCaptureDevice.GetSupportedPropertyRange(CameraSensorLocation.Back, KnownCameraAudioVideoProperties.H264QuantizationParameter);
/*
* 获取指定的值类属性在当前摄像头中所允许的值的列表
*/
// AudioVideoCaptureDevice.GetSupportedPropertyValues(CameraSensorLocation.Back, KnownCameraAudioVideoProperties.H264EncodingProfile);
// 实时显示捕获的内容
videoBrush.SetSource(_captureDevice); // 扩展方法来自：Microsoft.Devices.CameraVideoBrushExtensions
rt.Angle = _captureDevice.SensorRotationInDegrees;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
else
{
MessageBox.Show("没有后置摄像头");
}
}
private async void StartCameraAsync()
{
_cam = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back, AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back).First());
TheVideoBrush.SetSource(_cam);
}
private async Task <AudioVideoCaptureDevice> GetCaptureDevice()
{
return(await AudioVideoCaptureDevice.OpenForVideoOnlyAsync(sensorLocation, AudioVideoCaptureDevice.GetAvailableCaptureResolutions(sensorLocation).First()));
}
private async Task <AudioVideoCaptureDevice> GetCaptureDevice()
{
if (this.captureDevice == null)
{
this.captureDevice = await AudioVideoCaptureDevice.OpenAsync(SensorLocation, AudioVideoCaptureDevice.GetAvailableCaptureResolutions(SensorLocation).First());
}
return(this.captureDevice);
}
