bool SetupCaptureSession ()
{
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession () {
SessionPreset = AVCaptureSession.PresetMedium
};
// create a device input and attach it to the session
var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
var input = AVCaptureDeviceInput.FromDevice (captureDevice);
if (input == null){
// No input device
return false;
}
session.AddInput (input);
// create a VideoDataOutput and add it to the sesion
var output = new AVCaptureVideoDataOutput () {
VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA)
};
// configure the output
queue = new DispatchQueue ("myQueue");
qrScanner = new QrScanner (this);
output.SetSampleBufferDelegateAndQueue (qrScanner, queue);
session.AddOutput (output);
previewLayer = new AVCaptureVideoPreviewLayer (session);
previewLayer.Orientation = AVCaptureVideoOrientation.Portrait;
previewLayer.VideoGravity = "AVLayerVideoGravityResizeAspectFill";
session.StartRunning ();
return true;
}
bool SetupCaptureSession ()
{
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession () {
SessionPreset = AVCaptureSession.PresetMedium
};
// create a device input and attach it to the session
var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
var input = AVCaptureDeviceInput.FromDevice (captureDevice);
if (input == null){
Console.WriteLine ("No input device");
return false;
}
session.AddInput (input);
// create a VideoDataOutput and add it to the sesion
var output = new AVCaptureVideoDataOutput () {
VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA),
// If you want to cap the frame rate at a given speed, in this sample: 15 frames per second
MinFrameDuration = new CMTime (1, 15)
};
// configure the output
queue = new MonoTouch.CoreFoundation.DispatchQueue ("myQueue");
outputRecorder = new OutputRecorder ();
output.SetSampleBufferDelegateAndQueue (outputRecorder, queue);
session.AddOutput (output);
session.StartRunning ();
return true;
}
private bool addImageSamplerOutput(out string errorMessage, int minimumSampleIntervalInMilliSeconds)
{
errorMessage = "";
// create a VideoDataOutput and add it to the capture session
frameGrabberOutput = new AVCaptureVideoDataOutput();
frameGrabberOutput.VideoSettings = new AVVideoSettings(CVPixelFormatType.CV32BGRA);
// set up the output queue and delegate
queue = new MonoTouch.CoreFoundation.DispatchQueue("captureQueue");
videoFrameSampler = new VideoFrameSamplerDelegate();
frameGrabberOutput.SetSampleBufferDelegateAndQueue(videoFrameSampler, queue);
// subscribe to from capture events
videoFrameSampler.CaptureError += new EventHandler <CaptureErrorEventArgs>(handleImageCaptureError);
videoFrameSampler.ImageCaptured += new EventHandler <ImageCaptureEventArgs>(handleImageCaptured);
// add the output to the session
session.AddOutput(frameGrabberOutput);
// set minimum time interval between image samples (if possible).
try
{
AVCaptureConnection connection = (AVCaptureConnection)frameGrabberOutput.Connections[0];
connection.VideoMinFrameDuration = new CMTime(minimumSampleIntervalInMilliSeconds, 1000);
}
catch
{
}
return(true);
}
void CreateOutput()
{
output = new AVCaptureVideoDataOutput();
output.VideoSettings = new AVVideoSettings(CVPixelFormatType.CV32BGRA);
queue = new DispatchQueue("VideoCameraQueue");
output.SetSampleBufferDelegateAndQueue(new VideoCameraDelegate {
Camera = this
}, queue);
session.AddOutput(output);
}
void SetupAVCapture(NSString sessionPreset)
{
if ((videoTextureCache = CVOpenGLESTextureCache.FromEAGLContext(context)) == null)
{
Console.WriteLine("Could not create the CoreVideo TextureCache");
return;
}
session = new AVCaptureSession();
session.BeginConfiguration();
// Preset size
session.SessionPreset = sessionPreset;
// Input device
var videoDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
if (videoDevice == null)
{
Console.WriteLine("No video device");
return;
}
NSError err;
var input = new AVCaptureDeviceInput(videoDevice, out err);
if (err != null)
{
Console.WriteLine("Error creating video capture device");
return;
}
session.AddInput(input);
// Create the output device
var dataOutput = new AVCaptureVideoDataOutput()
{
AlwaysDiscardsLateVideoFrames = true,
// YUV 420, use "BiPlanar" to split the Y and UV planes in two separate blocks of
// memory, then we can index 0 to get the Y and 1 for the UV planes in the frame decoding
VideoSettings = new AVVideoSettings(CVPixelFormatType.CV420YpCbCr8BiPlanarFullRange)
};
dataOutputDelegate = new DataOutputDelegate(this);
//
// This dispatches the video frames into the main thread, because the OpenGL
// code is accessing the data synchronously.
//
dataOutput.SetSampleBufferDelegateAndQueue(dataOutputDelegate, DispatchQueue.MainQueue);
session.AddOutput(dataOutput);
session.CommitConfiguration();
session.StartRunning();
}
bool SetupCaptureSession()
{
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession()
{
SessionPreset = AVCaptureSession.PresetMedium
};
// create a device input and attach it to the session
var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
if (captureDevice == null)
{
// No input device
return(false);
}
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
// No input device
return(false);
}
session.AddInput(input);
// create a VideoDataOutput and add it to the sesion
var output = new AVCaptureVideoDataOutput()
{
VideoSettings = new AVVideoSettings(CVPixelFormatType.CV32BGRA)
};
// configure the output
queue = new DispatchQueue("myQueue");
qrScanner = new QrScanner(this);
output.SetSampleBufferDelegateAndQueue(qrScanner, queue);
session.AddOutput(output);
previewLayer = new AVCaptureVideoPreviewLayer(session);
previewLayer.Orientation = AVCaptureVideoOrientation.Portrait;
previewLayer.VideoGravity = "AVLayerVideoGravityResizeAspectFill";
session.StartRunning();
return(true);
}
bool SetupCaptureSession()
{
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession()
{
SessionPreset = AVCaptureSession.PresetMedium
};
// create a device input and attach it to the session
var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
Console.WriteLine("No input device");
return(false);
}
session.AddInput(input);
// create a VideoDataOutput and add it to the sesion
var output = new AVCaptureVideoDataOutput()
{
VideoSettings = new AVVideoSettings(CVPixelFormatType.CV32BGRA),
// If you want to cap the frame rate at a given speed, in this sample: 15 frames per second
MinFrameDuration = new CMTime(1, 15)
};
// configure the output
queue = new MonoTouch.CoreFoundation.DispatchQueue("myQueue");
outputRecorder = new OutputRecorder();
output.SetSampleBufferDelegateAndQueue(outputRecorder, queue);
session.AddOutput(output);
session.StartRunning();
return(true);
}
bool SetupCaptureSession()
{
Console.WriteLine("SetupCaptureSession");
// Overview: RosyWriter uses separate GCD queues for audio and video capture. If a single GCD queue
// is used to deliver both audio and video buffers, and our video processing consistently takes
// too long, the delivery queue can back up, resulting in audio being dropped.
//
// When recording, RosyWriter creates a third GCD queue for calls to AVAssetWriter. This ensures
// that AVAssetWriter is not called to start or finish writing from multiple threads simultaneously.
//
// RosyWriter uses AVCaptureSession's default preset, AVCaptureSessionPresetHigh.
// Create Capture session
captureSession = new AVCaptureSession();
captureSession.BeginConfiguration();
// Create audio connection
NSError error;
var audioDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Audio); //AudioDevice ();
if (audioDevice == null)
{
return(false); // e.g. simulator
}
AVCaptureDeviceInput audioIn = new AVCaptureDeviceInput(audioDevice, out error);
if (captureSession.CanAddInput(audioIn))
{
captureSession.AddInput(audioIn);
}
AVCaptureAudioDataOutput audioOut = new AVCaptureAudioDataOutput();
// Add the Delegate to capture each sample that comes through
audioOut.SetSampleBufferDelegatequeue(audioDataOutputDelegate, movieWritingQueue);
if (captureSession.CanAddOutput(audioOut))
{
captureSession.AddOutput(audioOut);
}
// Create Video Session
var videoDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video); //VideoDeviceWithPosition (AVCaptureDevicePosition.Back);
AVCaptureDeviceInput videoIn = new AVCaptureDeviceInput(videoDevice, out error);
if (captureSession.CanAddInput(videoIn))
{
captureSession.AddInput(videoIn);
}
// RosyWriter prefers to discard late video frames early in the capture pipeline, since its
// processing can take longer than real-time on some platforms (such as iPhone 3GS).
// Clients whose image processing is faster than real-time should consider setting AVCaptureVideoDataOutput's
// alwaysDiscardsLateVideoFrames property to NO.
AVCaptureVideoDataOutput videoOut = new AVCaptureVideoDataOutput()
{
AlwaysDiscardsLateVideoFrames = true,
VideoSettings = new AVVideoSettings(CVPixelFormatType.CV32BGRA)
};
// Create a DispatchQueue for the Video Processing
DispatchQueue videoCaptureQueue = new DispatchQueue("Video Capture Queue");
videoOut.SetSampleBufferDelegateAndQueue(videoDataOutputDelegate, videoCaptureQueue);
if (captureSession.CanAddOutput(videoOut))
{
captureSession.AddOutput(videoOut);
}
// Set the Video connection from the Video Output object
videoConnection = videoOut.ConnectionFromMediaType(AVMediaType.Video);
videoOrientation = videoConnection.VideoOrientation;
captureSession.CommitConfiguration();
return(true);
}
void CreateOutput ()
{
output = new AVCaptureVideoDataOutput ();
output.VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA);
queue = new DispatchQueue ("VideoCameraQueue");
output.SetSampleBufferDelegateAndQueue (new VideoCameraDelegate { Camera = this }, queue);
session.AddOutput (output);
}
bool SetupCaptureSession()
{
session = new AVCaptureSession () {
SessionPreset = AVCaptureSession.PresetMedium
};
AVCaptureDevice[] capDevices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video);
AVCaptureDeviceInput input = null;
if (capDevices.Length != 0) input = AVCaptureDeviceInput.FromDevice (capDevices[0]);
if (input == null){
new UIAlertView("Error", "Camera not available", null, "OK", null).Show();
Console.WriteLine ("Camera not available");
return false;
}
session.AddInput (input);
var output = new AVCaptureVideoDataOutput () {
VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA),
MinFrameDuration = new CMTime (1, 30) //second parameter is frames per second
};
queue = new MonoTouch.CoreFoundation.DispatchQueue ("myQueue");
outputRecorder = new OutputRecorder ();
output.SetSampleBufferDelegateAndQueue (outputRecorder, queue);
session.AddOutput (output);
session.StartRunning ();
return true;
}
void SetupAVCapture (NSString sessionPreset)
{
if ((videoTextureCache = CVOpenGLESTextureCache.FromEAGLContext (context)) == null){
Console.WriteLine ("Could not create the CoreVideo TextureCache");
return;
}
session = new AVCaptureSession ();
session.BeginConfiguration ();
// Preset size
session.SessionPreset = sessionPreset;
// Input device
var videoDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
if (videoDevice == null){
Console.WriteLine ("No video device");
return;
}
NSError err;
var input = new AVCaptureDeviceInput (videoDevice, out err);
if (err != null){
Console.WriteLine ("Error creating video capture device");
return;
}
session.AddInput (input);
// Create the output device
var dataOutput = new AVCaptureVideoDataOutput () {
AlwaysDiscardsLateVideoFrames = true,
// YUV 420, use "BiPlanar" to split the Y and UV planes in two separate blocks of
// memory, then we can index 0 to get the Y and 1 for the UV planes in the frame decoding
VideoSettings = new AVVideoSettings (CVPixelFormatType.CV420YpCbCr8BiPlanarFullRange)
};
dataOutputDelegate = new DataOutputDelegate (this);
//
// This dispatches the video frames into the main thread, because the OpenGL
// code is accessing the data synchronously.
//
dataOutput.SetSampleBufferDelegateAndQueue (dataOutputDelegate, DispatchQueue.MainQueue);
session.AddOutput (dataOutput);
session.CommitConfiguration ();
session.StartRunning ();
}
bool SetupCaptureSession ()
{
Console.WriteLine ("SetupCaptureSession");
// Overview: RosyWriter uses separate GCD queues for audio and video capture. If a single GCD queue
// is used to deliver both audio and video buffers, and our video processing consistently takes
// too long, the delivery queue can back up, resulting in audio being dropped.
//
// When recording, RosyWriter creates a third GCD queue for calls to AVAssetWriter. This ensures
// that AVAssetWriter is not called to start or finish writing from multiple threads simultaneously.
//
// RosyWriter uses AVCaptureSession's default preset, AVCaptureSessionPresetHigh.
// Create Capture session
captureSession = new AVCaptureSession ();
captureSession.BeginConfiguration ();
// Create audio connection
NSError error;
var audioDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Audio); //AudioDevice ();
if (audioDevice == null)
return false; // e.g. simulator
AVCaptureDeviceInput audioIn = new AVCaptureDeviceInput (audioDevice, out error);
if (captureSession.CanAddInput (audioIn))
captureSession.AddInput (audioIn);
AVCaptureAudioDataOutput audioOut = new AVCaptureAudioDataOutput ();
// Add the Delegate to capture each sample that comes through
audioOut.SetSampleBufferDelegatequeue (audioDataOutputDelegate, movieWritingQueue);
if (captureSession.CanAddOutput (audioOut))
captureSession.AddOutput (audioOut);
// Create Video Session
var videoDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video); //VideoDeviceWithPosition (AVCaptureDevicePosition.Back);
AVCaptureDeviceInput videoIn = new AVCaptureDeviceInput (videoDevice, out error);
if (captureSession.CanAddInput (videoIn))
captureSession.AddInput (videoIn);
// RosyWriter prefers to discard late video frames early in the capture pipeline, since its
// processing can take longer than real-time on some platforms (such as iPhone 3GS).
// Clients whose image processing is faster than real-time should consider setting AVCaptureVideoDataOutput's
// alwaysDiscardsLateVideoFrames property to NO.
AVCaptureVideoDataOutput videoOut = new AVCaptureVideoDataOutput (){
AlwaysDiscardsLateVideoFrames = true,
VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA)
};
// Create a DispatchQueue for the Video Processing
DispatchQueue videoCaptureQueue = new DispatchQueue ("Video Capture Queue");
videoOut.SetSampleBufferDelegateAndQueue (videoDataOutputDelegate, videoCaptureQueue);
if (captureSession.CanAddOutput (videoOut))
captureSession.AddOutput (videoOut);
// Set the Video connection from the Video Output object
videoConnection = videoOut.ConnectionFromMediaType (AVMediaType.Video);
videoOrientation = videoConnection.VideoOrientation;
captureSession.CommitConfiguration ();
return true;
}
private bool addImageSamplerOutput( out string errorMessage, int minimumSampleIntervalInMilliSeconds )
{
errorMessage = "";
// create a VideoDataOutput and add it to the capture session
frameGrabberOutput = new AVCaptureVideoDataOutput();
frameGrabberOutput.VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA);
// set up the output queue and delegate
queue = new MonoTouch.CoreFoundation.DispatchQueue ("captureQueue");
videoFrameSampler = new VideoFrameSamplerDelegate();
frameGrabberOutput.SetSampleBufferDelegateAndQueue (videoFrameSampler, queue);
// subscribe to from capture events
videoFrameSampler.CaptureError += new EventHandler<CaptureErrorEventArgs>( handleImageCaptureError );
videoFrameSampler.ImageCaptured += new EventHandler<ImageCaptureEventArgs>( handleImageCaptured );
// add the output to the session
session.AddOutput (frameGrabberOutput);
// set minimum time interval between image samples (if possible).
try
{
AVCaptureConnection connection = (AVCaptureConnection)frameGrabberOutput.Connections[0];
connection.VideoMinFrameDuration = new CMTime(minimumSampleIntervalInMilliSeconds, 1000);
}
catch
{
}
return true;
}
