/// <summary>
/// Self-contained method for recording raw video frames directly from the camera's video port.
/// Uses the encoding and pixel format as set in <see cref="MMALCameraConfig.VideoEncoding"/> and <see cref="MMALCameraConfig.VideoSubformat"/>.
/// </summary>
/// <param name="handler">The video capture handler to apply to the encoder.</param>
/// <param name="cancellationToken">A cancellationToken to signal when to stop video capture.</param>
/// <returns>The awaitable Task.</returns>
public async Task TakeRawVideo(IVideoCaptureHandler handler, CancellationToken cancellationToken)
{
using (var splitter = new MMALSplitterComponent())
using (var renderer = new MMALVideoRenderer())
{
this.ConfigureCameraSettings();
var splitterOutputConfig = new MMALPortConfig(MMALCameraConfig.VideoEncoding, MMALCameraConfig.VideoSubformat, 0);
// Force port type to SplitterVideoPort to prevent resolution from being set against splitter component.
splitter.ConfigureOutputPort <SplitterVideoPort>(0, splitterOutputConfig, handler);
// Create our component pipeline.
this.Camera.VideoPort.ConnectTo(splitter);
this.Camera.PreviewPort.ConnectTo(renderer);
MMALLog.Logger.LogInformation($"Preparing to take raw video. Resolution: {this.Camera.VideoPort.Resolution.Width} x {this.Camera.VideoPort.Resolution.Height}. " +
$"Encoder: {MMALCameraConfig.VideoEncoding.EncodingName}. Pixel Format: {MMALCameraConfig.VideoSubformat.EncodingName}.");
// Camera warm up time
await Task.Delay(2000).ConfigureAwait(false);
await this.ProcessAsync(this.Camera.VideoPort, cancellationToken).ConfigureAwait(false);
}
}
/// <summary>
/// Self-contained method for recording H.264 video for a specified amount of time. Records at 30fps, 25Mb/s at the highest quality.
/// </summary>
/// <param name="handler">The video capture handler to apply to the encoder.</param>
/// <param name="cancellationToken">A cancellationToken to signal when to stop video capture.</param>
/// <param name="split">Used for Segmented video mode.</param>
/// <returns>The awaitable Task.</returns>
public async Task TakeVideo(IVideoCaptureHandler handler, CancellationToken cancellationToken, Split split = null)
{
if (split != null && !MMALCameraConfig.InlineHeaders)
{
MMALLog.Logger.LogWarning("Inline headers not enabled. Split mode not supported when this is disabled.");
split = null;
}
using (var vidEncoder = new MMALVideoEncoder())
using (var renderer = new MMALVideoRenderer())
{
this.ConfigureCameraSettings();
var portConfig = new MMALPortConfig(MMALEncoding.H264, MMALEncoding.I420, 10, MMALVideoEncoder.MaxBitrateLevel4, null, split);
vidEncoder.ConfigureOutputPort(portConfig, handler);
// Create our component pipeline.
this.Camera.VideoPort.ConnectTo(vidEncoder);
this.Camera.PreviewPort.ConnectTo(renderer);
MMALLog.Logger.LogInformation($"Preparing to take video. Resolution: {this.Camera.VideoPort.Resolution.Width} x {this.Camera.VideoPort.Resolution.Height}. " +
$"Encoder: {vidEncoder.Outputs[0].EncodingType.EncodingName}. Pixel Format: {vidEncoder.Outputs[0].PixelFormat.EncodingName}.");
// Camera warm up time
await Task.Delay(2000).ConfigureAwait(false);
await this.ProcessAsync(this.Camera.VideoPort, cancellationToken).ConfigureAwait(false);
}
}
