public override IDownstreamComponent ConfigureOutputPort(int outputPort, IMmalPortConfig config, ICaptureHandler handler)
{
var bufferSize = Math.Max(Outputs[outputPort].Ptr->BufferSizeRecommended, Outputs[outputPort].Ptr->BufferSizeMin);
var bitrate = GetValidBitrate(config);
// Force framerate to be 0 in case it was provided by user.
config = new MmalPortConfig(
config.EncodingType,
config.PixelFormat,
config.Quality,
bitrate,
config.Timeout,
config.Split,
config.StoreMotionVectors,
config.Width,
config.Height,
config.Framerate,
config.ZeroCopy,
config.BufferNum,
bufferSize,
config.Crop);
base.ConfigureOutputPort(outputPort, config, handler);
ConfigureIntraPeriod(outputPort);
ConfigureVideoProfile(outputPort);
ConfigureInlineHeaderFlag(outputPort);
ConfigureInlineVectorsFlag(outputPort);
ConfigureIntraRefresh(outputPort);
ConfigureQuantisationParameter(outputPort, config.Quality);
ConfigureImmutableInput();
return(this);
}
public async Task Capture(Action <byte[]> onVideoDataAvailable, CancellationToken cancellationToken, int videoQuantisation = 0, int videoBitrate = 2386093)
{
_camera.Initialise();
var videoCaptureHandler = new InMemoryVideoHandler();
var vidEncoder = new MmalVideoEncoder();
var nullSink = new MmalNullSinkComponent();
videoCaptureHandler.SetOnVideoDataAvailable(data => onVideoDataAvailable?.Invoke(data));
_cameraDisposables.AddRange(new IDisposable[] { videoCaptureHandler, vidEncoder, nullSink });
var videoPortConfig = new MmalPortConfig(
MmalEncoding.H264,
MmalEncoding.I420,
videoQuantisation,
videoBitrate,
null,
null,
false,
CameraConfig.Resolution.Width,
CameraConfig.Resolution.Height);
vidEncoder.ConfigureOutputPort(videoPortConfig, videoCaptureHandler);
_camera.VideoPort.ConnectTo(vidEncoder);
_camera.PreviewPort.ConnectTo(nullSink);
// Camera warm up time
await Task.Delay(MmalCameraWarmUpMs, cancellationToken);
await ProcessAsync(_camera.VideoPort, cancellationToken);
}
void InitialiseStill()
{
var currentWidth = CameraConfig.Resolution.Width;
var currentHeight = CameraConfig.Resolution.Height;
if (currentWidth == 0 || currentWidth > CameraInfo.MaxWidth)
{
currentWidth = CameraInfo.MaxWidth;
}
if (currentHeight == 0 || currentHeight > CameraInfo.MaxHeight)
{
currentHeight = CameraInfo.MaxHeight;
}
CameraConfig.Resolution = new Resolution(currentWidth, currentHeight);
var resolution = CameraConfig.Resolution.Pad();
var portConfig = new MmalPortConfig(
CameraConfig.Encoding,
CameraConfig.EncodingSubFormat,
width: resolution.Width,
height: resolution.Height,
framerate: CameraConfig.Framerate,
bufferNum: Math.Max(StillPort.BufferNumRecommended, 3),
bufferSize: Math.Max(StillPort.BufferSizeRecommended, StillPort.BufferSizeMin),
crop: new Rectangle(0, 0, currentWidth, currentHeight));
MmalLog.Logger.LogDebug("Commit still");
StillPort.Configure(portConfig, null, null);
// Use Raspistill values.
if (CameraConfig.ShutterSpeed > 6000000)
{
StillPort.SetFramerateRange(new MmalRational(5, 1000), new MmalRational(166, 1000));
}
else if (CameraConfig.ShutterSpeed > 1000000)
{
StillPort.SetFramerateRange(new MmalRational(167, 1000), new MmalRational(999, 1000));
}
}
public async Task Capture(Action <byte[]> onVideoDataAvailable, Action <Stream> onFullFrameAvailable, CancellationToken cancellationToken, int videoQuantisation = 0, int videoBitrate = 2386093, int jpegQuality = 80)
{
_camera.Initialise();
var imageCaptureHandler = new InMemoryImageHandler();
var videoCaptureHandler = new InMemoryVideoHandler();
var imgEncoder = new MmalImageEncoder();
var vidEncoder = new MmalVideoEncoder();
var splitter = new MmalSplitterComponent();
var nullSink = new MmalNullSinkComponent();
videoCaptureHandler.SetOnVideoDataAvailable(data => onVideoDataAvailable?.Invoke(data));
imageCaptureHandler.SetOnFullFrameAvailable(stream => onFullFrameAvailable?.Invoke(stream));
_cameraDisposables.AddRange(new IDisposable[] { imageCaptureHandler, videoCaptureHandler, imgEncoder, vidEncoder, splitter, nullSink });
var imagePortConfig = new MmalPortConfig(MmalEncoding.Jpeg, MmalEncoding.I420, jpegQuality);
var videoPortConfig = new MmalPortConfig(
MmalEncoding.H264,
MmalEncoding.I420,
videoQuantisation,
videoBitrate,
null,
null,
false,
CameraConfig.Resolution.Width,
CameraConfig.Resolution.Height);
imgEncoder.ConfigureOutputPort(imagePortConfig, imageCaptureHandler);
vidEncoder.ConfigureOutputPort(videoPortConfig, videoCaptureHandler);
_camera.VideoPort.ConnectTo(splitter);
splitter.Outputs[0].ConnectTo(imgEncoder);
splitter.Outputs[1].ConnectTo(vidEncoder);
_camera.PreviewPort.ConnectTo(nullSink);
// Camera warm up time
await Task.Delay(MmalCameraWarmUpMs, cancellationToken);
await ProcessAsync(_camera.VideoPort, cancellationToken);
}
void InitialisePreview()
{
var portConfig = new MmalPortConfig(
CameraConfig.Encoding,
CameraConfig.EncodingSubFormat,
width: CameraConfig.Resolution.Width,
height: CameraConfig.Resolution.Height,
framerate: CameraConfig.Framerate);
MmalLog.Logger.LogDebug("Commit preview");
PreviewPort.Configure(portConfig, null, null);
// Use Raspistill values.
if (CameraConfig.ShutterSpeed > 6000000)
{
PreviewPort.SetFramerateRange(new MmalRational(5, 1000), new MmalRational(166, 1000));
}
else if (CameraConfig.ShutterSpeed > 1000000)
{
PreviewPort.SetFramerateRange(new MmalRational(166, 1000), new MmalRational(999, 1000));
}
}
public async Task Capture(Action <Stream> onFullFrameAvailable, CancellationToken cancellationToken, int jpegQuality = 80)
{
_camera.Initialise();
var imageCaptureHandler = new InMemoryImageHandler();
var imgEncoder = new MmalImageEncoder();
var nullSink = new MmalNullSinkComponent();
imageCaptureHandler.SetOnFullFrameAvailable(stream => onFullFrameAvailable?.Invoke(stream));
_cameraDisposables.AddRange(new IDisposable[] { imageCaptureHandler, imgEncoder, nullSink });
var imagePortConfig = new MmalPortConfig(MmalEncoding.Jpeg, MmalEncoding.I420, jpegQuality);
imgEncoder.ConfigureOutputPort(imagePortConfig, imageCaptureHandler);
_camera.VideoPort.ConnectTo(imgEncoder);
_camera.PreviewPort.ConnectTo(nullSink);
// Camera warm up time
await Task.Delay(MmalCameraWarmUpMs, cancellationToken);
await ProcessAsync(_camera.VideoPort, cancellationToken);
}
