// set hardware properties
public void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
// set manual focus
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
// set continuous auto exposure
else if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
// set continuous auto white balance
else if (device.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
device.LockForConfiguration(out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration();
}
}
public void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
if (device != null)
{
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
else if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
else if (device.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
device.LockForConfiguration(out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration();
}
}
}
public void ConfigureCameraForDevice(AVCaptureDevice device)
{
try
{
var error = new NSError();
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
else if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
else if (device.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
device.LockForConfiguration(out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration();
}
}
catch (Exception message)
{
Debug.WriteLine(message.ToString());
}
}
public void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
var photoSettings = AVCapturePhotoSettings.Create();
photoSettings.FlashMode = AVCaptureFlashMode.Auto;
photoSettings.IsHighResolutionPhotoEnabled = true;
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
else if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
else if (device.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
device.LockForConfiguration(out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration();
}
}
public void SetAutoFocus()
{
var error = new NSError();
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
}
void updateCameraSelection()
{
session.BeginConfiguration();
AVCaptureInput[] oldInputs = session.Inputs;
foreach (var oldInput in oldInputs)
{
session.RemoveInput(oldInput);
}
AVCaptureDeviceInput input = pickCamera();
if (input == null)
{
foreach (var oldInput in oldInputs)
{
session.AddInput(oldInput);
}
}
else
{
session.AddInput(input);
device = input.Device;
NSError error;
if (!device.LockForConfiguration(out error))
{
Console.WriteLine("Could not lock for device: " + error.LocalizedDescription);
}
updateAVFoundationFaceDetection();
}
session.CommitConfiguration();
}
/// <summary>
/// Set the device's focus settings
/// </summary>
/// <returns><see cref="T:ChilliSource.Mobile.Core.OperationResult"/> instance indicating the outcome of the operation</returns>
/// <param name="videoDeviceInput">Video device input.</param>
/// <param name="focusMode">Focus mode.</param>
/// <param name="exposureMode">Exposure mode.</param>
/// <param name="pointOfInterest">Point of interest</param>
/// <param name="monitorSubjectAreaChange">If set to <c>true</c> monitor subject area change.</param>
public static OperationResult UpdateFocus(this AVCaptureDeviceInput videoDeviceInput, AVCaptureFocusMode focusMode,
AVCaptureExposureMode exposureMode, CGPoint pointOfInterest, bool monitorSubjectAreaChange)
{
if (videoDeviceInput == null)
{
return(OperationResult.AsFailure("device input is null"));
}
AVCaptureDevice device = videoDeviceInput.Device;
NSError error;
if (device.LockForConfiguration(out error))
{
if (device.FocusPointOfInterestSupported && device.IsFocusModeSupported(focusMode))
{
device.FocusPointOfInterest = pointOfInterest;
device.FocusMode = focusMode;
}
if (device.ExposurePointOfInterestSupported && device.IsExposureModeSupported(exposureMode))
{
device.ExposurePointOfInterest = pointOfInterest;
device.ExposureMode = exposureMode;
}
device.SubjectAreaChangeMonitoringEnabled = monitorSubjectAreaChange;
device.UnlockForConfiguration();
return(OperationResult.AsSuccess());
}
else
{
return(OperationResult.AsFailure(string.Format("Could not lock device for configuration: {0}", error)));
}
}
void UpdateDeviceFocus(AVCaptureFocusMode focusMode, AVCaptureExposureMode exposureMode, CGPoint point, bool monitorSubjectAreaChange)
{
SessionQueue.DispatchAsync(() => {
if (VideoDeviceInput == null)
{
return;
}
AVCaptureDevice device = VideoDeviceInput.Device;
NSError error;
if (device.LockForConfiguration(out error))
{
// Setting (Focus/Exposure)PointOfInterest alone does not initiate a (focus/exposure) operation.
// Set (Focus/Exposure)Mode to apply the new point of interest.
if (device.FocusPointOfInterestSupported && device.IsFocusModeSupported(focusMode))
{
device.FocusPointOfInterest = point;
device.FocusMode = focusMode;
}
if (device.ExposurePointOfInterestSupported && device.IsExposureModeSupported(exposureMode))
{
device.ExposurePointOfInterest = point;
device.ExposureMode = exposureMode;
}
device.SubjectAreaChangeMonitoringEnabled = monitorSubjectAreaChange;
device.UnlockForConfiguration();
}
else
{
Console.WriteLine("Could not lock device for configuration: {0}", error);
}
});
}
/// <summary>
/// Sets the device's frame rate
/// </summary>
/// <returns><see cref="T:ChilliSource.Mobile.Core.OperationResult"/> instance indicating the outcome of the operation</returns>
/// <param name="device">Device.</param>
/// <param name="frameRate">Frame rate.</param>
/// <param name="timeValue">Time value.</param>
public static OperationResult SetFrameRate(this AVCaptureDevice device, int frameRate, int timeValue = 1)
{
NSError error = null;
if (!device.LockForConfiguration(out error))
{
return(OperationResult.AsFailure(error?.LocalizedDescription ?? "Could not lock configuration"));
}
double epsilon = 0.00000001;
bool frameRateSet = false;
foreach (var range in device.ActiveFormat.VideoSupportedFrameRateRanges)
{
if (range.MinFrameRate <= frameRate + epsilon && range.MaxFrameRate >= frameRate - epsilon)
{
device.ActiveVideoMaxFrameDuration = new CoreMedia.CMTime(timeValue, frameRate);
device.ActiveVideoMinFrameDuration = new CoreMedia.CMTime(timeValue, frameRate);
frameRateSet = true;
break;
}
}
device.UnlockForConfiguration();
return(frameRateSet ? OperationResult.AsSuccess() : OperationResult.AsFailure("Frame rate is not supported"));
}
void SetFrameRate()
{
// Based on code from https://github.com/dokun1/Lumina/
var activeDimensions = (captureDevice.ActiveFormat.FormatDescription as CMVideoFormatDescription).Dimensions;
foreach (var vFormat in captureDevice.Formats)
{
var dimensions = (vFormat.FormatDescription as CMVideoFormatDescription).Dimensions;
var ranges = vFormat.VideoSupportedFrameRateRanges;
var frameRate = ranges[0];
if (frameRate.MaxFrameRate >= (double)targetFramerate &&
frameRate.MinFrameRate <= (double)targetFramerate &&
activeDimensions.Width == dimensions.Width &&
activeDimensions.Height == dimensions.Height &&
vFormat.FormatDescription.MediaSubType == 875704422) // meant for full range 420f
{
try
{
NSError error;
captureDevice.LockForConfiguration(out error);
captureDevice.ActiveFormat = vFormat as AVCaptureDeviceFormat;
captureDevice.ActiveVideoMinFrameDuration = new CMTime(1, targetFramerate);
captureDevice.ActiveVideoMaxFrameDuration = new CMTime(1, targetFramerate);
captureDevice.UnlockForConfiguration();
}
catch (Exception ex)
{
continue;
}
}
Console.WriteLine("Camera format: " + captureDevice.ActiveFormat);
}
}
public void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
else if (device.AutoFocusRangeRestrictionSupported)
{
device.LockForConfiguration(out error);
device.AutoFocusRangeRestriction = AVCaptureAutoFocusRangeRestriction.Near;
device.UnlockForConfiguration();
}
}
public void onClickFlash()
{
if (!flashOn)
{
device.LockForConfiguration(out error);
device.TorchMode = AVCaptureTorchMode.On;
device.UnlockForConfiguration();
flashOn = true;
}
else
{
device.LockForConfiguration(out error);
device.TorchMode = AVCaptureTorchMode.Off;
device.UnlockForConfiguration();
flashOn = false;
}
}
private NSError SetFlashOff(AVCaptureDevice device)
{
NSError error;
device.LockForConfiguration(out error);
device.FlashMode = AVCaptureFlashMode.Off;
device.UnlockForConfiguration();
_toggleFlashButton.SetBackgroundImage(UIImage.FromFile("NoFlashButton.png"), UIControlState.Normal);
return error;
}
/// <summary>
/// Switchs the flash.
/// </summary>
/// <param name="flashOn">If set to <c>true</c> flash on.</param>
public void SwitchFlash(bool flashOn)
{
NSError err;
if (_cameraAvailable && _device != null)
{
try
{
_device.LockForConfiguration(out err);
_device.TorchMode = flashOn ? AVCaptureTorchMode.On : AVCaptureTorchMode.Off;
_device.UnlockForConfiguration();
}
catch (Exception error)
{
Console.WriteLine(error.Message);
}
}
}
/*
* Setting up camera setting for EOSpec:
* Focus: 0.3 locked : Empirically chosen for set distance to current version of EOSpec
* ISO : Avg between max and min ISO of device
* Exposure : Empirically set to 1/10
* RGB gain: R and G normalized using max Gain values,
* however Blue is normalized using min Gain value due to it saturating more than green and red channels (my phone: 1.858154 , 1 , 1)
*/
void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.Locked;
device.SetFocusModeLocked((float)0.3, null);
Console.WriteLine("devidce device.FocusMode: " + device.FocusMode);
device.UnlockForConfiguration();
}
if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.Custom;
var iso = (device.ActiveFormat.MaxISO + device.ActiveFormat.MinISO) / 2;
CMTime exposureTime = new CMTime(1, 10);
device.LockExposure(exposureTime, iso, null);
Console.WriteLine("deviceexposure: " + device.ExposureDuration + " = " + exposureTime + " iso: " + iso);
device.UnlockForConfiguration();
//Setting RGB gains using WhiteBalance
device.LockForConfiguration(out error);
AVCaptureWhiteBalanceGains gains = device.DeviceWhiteBalanceGains;
//normalizign Gains
gains.RedGain = Math.Max(1, gains.RedGain);
gains.GreenGain = Math.Max(1, gains.GreenGain);
gains.BlueGain = Math.Min(1, gains.BlueGain);
float maxGain = device.MaxWhiteBalanceGain;
gains.RedGain = Math.Min(maxGain, gains.RedGain);
gains.GreenGain = Math.Min(maxGain, gains.GreenGain);
gains.BlueGain = Math.Min(maxGain, gains.BlueGain);
Console.WriteLine("devidce device.WhiteBalanceMode gains RGB: " + gains.RedGain + " " + gains.GreenGain + " " + gains.BlueGain);
device.SetWhiteBalanceModeLockedWithDeviceWhiteBalanceGains(gains, null);
device.UnlockForConfiguration();
}
}
partial void onClickFlahBtn(UIButton sender)
{
if (!flashOn)
{
device.LockForConfiguration(out error);
device.TorchMode = AVCaptureTorchMode.On;
device.UnlockForConfiguration();
flashBtn.SetImage(UIImage.FromBundle("flashoff"), UIControlState.Normal);
flashOn = true;
}
else
{
device.LockForConfiguration(out error);
device.TorchMode = AVCaptureTorchMode.Off;
device.UnlockForConfiguration();
flashBtn.SetImage(UIImage.FromBundle("flashon"), UIControlState.Normal);
flashOn = false;
}
}
public void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
//AdjustExposure(50);
}
/// <summary>
/// Initializes this instance.
/// </summary>
private void Initialize()
{
var captureSession = new AVCaptureSession();
_previewLayer = new AVCaptureVideoPreviewLayer(captureSession)
{
VideoGravity = AVLayerVideoGravity.ResizeAspectFill,
Frame = Bounds
};
// create a device input and attach it to the session
AVCaptureDevice frontCameraDevice = MediaDevices.FrontCamera;
if (frontCameraDevice == null)
{
LoadErrors = "Cannot load camera";
return;
}
try
{
NSError error = null;
frontCameraDevice.LockForConfiguration(out error);
if (error != null)
{
Debug.WriteLine(error);
//throw new BusinessLogicException (ErrorCode.EC_UNDEFINED_ERROR, error.ToString());
//TODO: show error to user
}
frontCameraDevice.ActiveVideoMinFrameDuration = new CMTime(1, 15); // Configure for 15 FPS
}
finally
{
frontCameraDevice.UnlockForConfiguration();
}
AVCaptureDeviceInput inputDevice = AVCaptureDeviceInput.FromDevice(frontCameraDevice);
if (inputDevice == null)
{
LoadErrors = "Cannot access front camera";
return;
}
captureSession.AddInput(inputDevice);
NSError errorOut;
Layer.AddSublayer(_previewLayer);
captureSession.StartRunning();
}
// //Camera Dye and Temperature
protected void ValueChanged(object sender, EventArgs e)
{
var TempAndTint = new AVCaptureWhiteBalanceTemperatureAndTintValues
(this.sldTemperature.Value, this.sldTint.Value);
var StatusDev = acdDevice.GetDeviceWhiteBalanceGains(TempAndTint);
if (
acdDevice.LockForConfiguration(out nsError)
)
{
StatusDev = Settings(StatusDev);
acdDevice.SetWhiteBalanceModeLockedWithDeviceWhiteBalanceGains(StatusDev, null);
acdDevice.UnlockForConfiguration();
}
sldTint.BeginInvokeOnMainThread(() =>
{
sldTint.Value = TempAndTint.Tint;
});
sldTemperature.BeginInvokeOnMainThread(() =>
{
sldTemperature.Value =
});
}
/// <summary>
/// Switchs the flash.
/// </summary>
/// <param name="flashOn">If set to <c>true</c> flash on.</param>
public void SwitchFlash(bool flashOn)
{
NSError err;
if (_cameraAvailable && _device != null)
{
try
{
_device.LockForConfiguration(out err);
_device.TorchMode = flashOn ? AVCaptureTorchMode.On : AVCaptureTorchMode.Off;
_device.UnlockForConfiguration();
}
catch (Exception error)
{
_log.WriteLineTime(_tag + "\n" +
"SwitchFlash() Failed to switch flash on/off \n " +
"ErrorMessage: \n" +
error.Message + "\n" +
"Stacktrace: \n " +
error.StackTrace);
}
}
}
public void toggleFlash(object sender, EventArgs e)
{
flashMode = !flashMode;
flashButton.Selected = !flashButton.Selected;
var error = new NSError();
//Debug.WriteLine("DHB:CameraServices_iOS:toggleFlash button state:" + flashButton.State.ToString());
if (captureDevice.HasFlash)
{
if (flashMode == true)
{
captureDevice.LockForConfiguration(out error);
captureDevice.FlashMode = AVCaptureFlashMode.On;
captureDevice.UnlockForConfiguration();
}
else
{
captureDevice.LockForConfiguration(out error);
captureDevice.FlashMode = AVCaptureFlashMode.Off;
captureDevice.UnlockForConfiguration();
}
}
}
void ContinuousFocus(CGPoint point)
{
AVCaptureDevice device = videoInput.Device;
if (device.FocusPointOfInterestSupported && device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
NSError error;
if (device.LockForConfiguration(out error))
{
device.FocusPointOfInterest = point;
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
}
}
public void Expose(CGPoint point)
{
AVCaptureDevice device = videoInput.Device;
if (device.ExposurePointOfInterestSupported && device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
NSError error;
if (device.LockForConfiguration(out error))
{
device.ExposurePointOfInterest = point;
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
}
}
void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
if (device.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
device.LockForConfiguration(out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration();
}
// @todo AVCaptureDeviceFormat look into what are valid values for this.
}
static void SetFlashModeForDevice(AVCaptureFlashMode flashMode, AVCaptureDevice device)
{
if (device.HasFlash && device.IsFlashModeSupported(flashMode))
{
NSError error;
if (device.LockForConfiguration(out error))
{
device.FlashMode = flashMode;
device.UnlockForConfiguration();
}
else
{
Console.WriteLine("Could not lock device for configuration: {0}", error);
}
}
}
void CreateDevice ()
{
NSError error;
device = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
if (device == null) {
throw new Exception ("No default video device");
}
device.LockForConfiguration(out error);
if (error != null) {
throw new Exception ("Could not configure. Error: " + error);
}
device.ActiveVideoMinFrameDuration = new CMTime (1, 30);
device.UnlockForConfiguration();
}
public QRCodeReaderView(QRCodeReaderViewController _thisController)
{
this.thisController = _thisController;
this.BackgroundColor = UIColor.White;
scanAnimateView = new ScanAnimateView();
this.AddSubview(scanAnimateView);
UIButton btnCancel = new UIButton(UIButtonType.Custom);
btnCancel.SetTitle("Cancel", UIControlState.Normal);
btnCancel.SetTitleColor(UIColor.LightGray, UIControlState.Highlighted);
btnCancel.Frame = new CGRect(20, 40, 80, 20);
this.Add(btnCancel);
btnCancel.TouchUpInside += delegate {
thisController.Close();
};
UIButton btnFlash = new UIButton(UIButtonType.Custom);
btnFlash.SetTitle("Flash", UIControlState.Normal);
btnFlash.SetTitleColor(UIColor.LightGray, UIControlState.Highlighted);
btnFlash.Frame = new CGRect(UIScreen.MainScreen.Bounds.Width - 100, 40, 80, 20);
this.Add(btnFlash);
btnFlash.TouchUpInside += delegate {
device.LockForConfiguration(out error);
if (device.FlashMode == AVCaptureFlashMode.On)
{
device.TorchMode = AVCaptureTorchMode.Off;
device.FlashMode = AVCaptureFlashMode.Off;
}
else
{
device.TorchMode = AVCaptureTorchMode.On;
device.FlashMode = AVCaptureFlashMode.On;
}
device.UnlockForConfiguration();
};
Setup();
}
void CreateDevice()
{
NSError error;
device = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
if (device == null)
{
throw new Exception("No default video device");
}
device.LockForConfiguration(out error);
if (error != null)
{
throw new Exception("Could not configure. Error: " + error);
}
device.ActiveVideoMinFrameDuration = new CMTime(1, 30);
device.UnlockForConfiguration();
}
private void updateTorch(PropertyChangedEventArgs e)
{
if (e.PropertyName == BarcodeScanner.TorchProperty.PropertyName && device.TorchAvailable)
{
NSError error;
device.LockForConfiguration(out error);
if (error != null)
{
this.Debug("Torch error");
return;
}
device.TorchMode = barcodeScanner.Torch ? AVCaptureTorchMode.On : AVCaptureTorchMode.Off;
device.UnlockForConfiguration();
this.Debug("Torch AVCaptureTorchMode {0}", barcodeScanner.Torch);
}
}
/// <summary>
/// Sets the device's flash settings
/// </summary>
/// <returns><see cref="T:ChilliSource.Mobile.Core.OperationResult"/> instance indicating the outcome of the operation</returns>
/// <param name="device">Device.</param>
/// <param name="flashMode">Flash mode.</param>
public static OperationResult SetFlashMode(this AVCaptureDevice device, AVCaptureFlashMode flashMode)
{
if (device.HasFlash && device.IsFlashModeSupported(flashMode))
{
NSError error;
if (device.LockForConfiguration(out error))
{
device.FlashMode = flashMode;
device.UnlockForConfiguration();
return(OperationResult.AsSuccess());
}
else
{
return(OperationResult.AsFailure(string.Format("Could not lock device for configuration: {0}", error)));
}
}
else
{
return(OperationResult.AsSuccess());
}
}
partial void OpenButton_TouchUpInside(UIButton sender)
{
if (mark == false)
{
//OpenButton.SetTitle("关闭", UIControlState.Normal);
OpenButton.SetImage(UIImage.FromBundle("Red.png"), UIControlState.Normal);
#region 摄像头调用
CaptureSession = new AVCaptureSession();
CaptureSession.SessionPreset = AVCaptureSession.PresetMedium;
videoDevice = AVCaptureDevice.GetDefaultDevice(AVMediaType.Video);
NSError error = null;
videoDevice.LockForConfiguration(out error);
if (error != null)
{
videoDevice.UnlockForConfiguration();
}
videoDevice.TorchMode = AVCaptureTorchMode.On;
videoDevice.UnlockForConfiguration();
CaptureSession.StartRunning();
#endregion
}
else
{
//OpenButton.SetTitle("打开", UIControlState.Normal);
OpenButton.SetImage(UIImage.FromBundle("Green.png"), UIControlState.Normal);
NSError error = null;
videoDevice.LockForConfiguration(out error);
if (error != null)
{
videoDevice.UnlockForConfiguration();
}
videoDevice.TorchMode = AVCaptureTorchMode.Off;
videoDevice.UnlockForConfiguration();
}
mark = !mark;
}
static void SetFlashModeForDevice (AVCaptureFlashMode flashMode, AVCaptureDevice device)
{
if (device.HasFlash && device.IsFlashModeSupported (flashMode)) {
NSError error;
if (device.LockForConfiguration (out error)) {
device.FlashMode = flashMode;
device.UnlockForConfiguration ();
} else {
Console.WriteLine ("Could not lock device for configuration: {0}", error);
}
}
}
void ConfigureCameraForDevice (AVCaptureDevice device)
{
var error = new NSError ();
if (device.IsFocusModeSupported (AVCaptureFocusMode.ContinuousAutoFocus)) {
device.LockForConfiguration (out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration ();
} else if (device.IsExposureModeSupported (AVCaptureExposureMode.ContinuousAutoExposure)) {
device.LockForConfiguration (out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration ();
} else if (device.IsWhiteBalanceModeSupported (AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance)) {
device.LockForConfiguration (out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration ();
}
}
void updateCameraSelection()
{
session.BeginConfiguration ();
AVCaptureInput[] oldInputs = session.Inputs;
foreach (var oldInput in oldInputs)
session.RemoveInput (oldInput);
AVCaptureDeviceInput input = pickCamera ();
if (input == null) {
foreach (var oldInput in oldInputs)
session.AddInput (oldInput);
} else {
session.AddInput (input);
device = input.Device;
NSError error;
if (!device.LockForConfiguration (out error))
Console.WriteLine ("Could not lock for device: " + error.LocalizedDescription);
updateAVFoundationFaceDetection ();
}
session.CommitConfiguration ();
}
