Apple Platform Blocks - VisioForge Media Blocks SDK .Net¶

var pipeline = new MediaBlocksPipeline();

// Configure compositor: 1920x1080 @ 30fps
var settings = new MetalVideoCompositorSettings(1920, 1080, VideoFrameRate.FPS_30);

// First stream: left half of screen
settings.AddStream(new MetalVideoMixerStream(
    rectangle: new Rect(0, 0, 960, 1080),
    zorder: 0));

// Second stream: right half of screen
// Rect ctor is (left, top, right, bottom). For the right half of a 1920x1080
// canvas use right=1920 and bottom=1080 — the previous form (960, 0, 960, 1080)
// has left==right and produces a zero-width box.
settings.AddStream(new MetalVideoMixerStream(
    rectangle: new Rect(960, 0, 1920, 1080),
    zorder: 1));

var compositor = new MetalVideoCompositorBlock(settings);

// Render composited output
var videoRenderer = new VideoRendererBlock(pipeline, VideoView1);
pipeline.Connect(compositor.Output, videoRenderer.Input);

await pipeline.StartAsync();

// Real-time: fade out stream 0 over 2 seconds
compositor.StartFadeOut(settings.Streams[0].ID, TimeSpan.FromSeconds(2));

bool available = MetalVideoCompositorBlock.IsAvailable();

var pipeline = new MediaBlocksPipeline();

var videoSource = new IOSVideoSourceBlock(videoSettings);

// Bilinear scaling with letterbox borders
var settings = new MetalConvertScaleSettings
{
    Method = MetalScalingMethod.Bilinear,
    AddBorders = true,
    BorderColor = 0xFF000000
};
var convertScale = new MetalConvertScaleBlock(settings);
pipeline.Connect(videoSource.Output, convertScale.Input);

var videoRenderer = new VideoRendererBlock(pipeline, VideoView1);
pipeline.Connect(convertScale.Output, videoRenderer.Input);

await pipeline.StartAsync();

bool available = MetalConvertScaleBlock.IsAvailable();

var pipeline = new MediaBlocksPipeline();

var videoSource = new IOSVideoSourceBlock(videoSettings);

// Motion-adaptive greedy-H deinterlacing
var settings = new MetalDeinterlaceSettings
{
    Method = MetalDeinterlaceMethod.GreedyH,
    FieldLayout = MetalDeinterlaceFieldLayout.Auto,
    MotionThreshold = 0.1
};
var deinterlace = new MetalDeinterlaceBlock(settings);
pipeline.Connect(videoSource.Output, deinterlace.Input);

var videoRenderer = new VideoRendererBlock(pipeline, VideoView1);
pipeline.Connect(deinterlace.Output, videoRenderer.Input);

await pipeline.StartAsync();

bool available = MetalDeinterlaceBlock.IsAvailable();

var pipeline = new MediaBlocksPipeline();

var videoSource = new IOSVideoSourceBlock(videoSettings);

// Logo at top-left with 80% opacity
var settings = new MetalOverlaySettings
{
    Location = "logo.png",
    X = 20,
    Y = 20,
    Alpha = 0.8
};
var overlay = new MetalOverlayBlock(settings);
pipeline.Connect(videoSource.Output, overlay.Input);

var videoRenderer = new VideoRendererBlock(pipeline, VideoView1);
pipeline.Connect(overlay.Output, videoRenderer.Input);

await pipeline.StartAsync();

bool available = MetalOverlayBlock.IsAvailable();

var pipeline = new MediaBlocksPipeline();

var videoSource = new IOSVideoSourceBlock(videoSettings);

// Rotate 90 degrees clockwise and crop 10px from each side
var settings = new MetalTransformSettings
{
    Method = MetalTransformMethod.Clockwise,
    CropLeft = 10,
    CropRight = 10
};
var transform = new MetalTransformBlock(settings);
pipeline.Connect(videoSource.Output, transform.Input);

var videoRenderer = new VideoRendererBlock(pipeline, VideoView1);
pipeline.Connect(transform.Output, videoRenderer.Input);

await pipeline.StartAsync();

bool available = MetalTransformBlock.IsAvailable();

var pipeline = new MediaBlocksPipeline();

// iOS video source
var videoSource = new IOSVideoSourceBlock(videoSettings);

// Process and display
var videoRenderer = new VideoRendererBlock(pipeline, VideoView1);
pipeline.Connect(videoSource.Output, videoRenderer.Input);

await pipeline.StartAsync();

var pipeline = new MediaBlocksPipeline();

// macOS audio source
var audioSource = new OSXAudioSourceBlock(audioSettings);

// macOS audio sink
var audioSink = new OSXAudioSinkBlock();
pipeline.Connect(audioSource.Output, audioSink.Input);

await pipeline.StartAsync();

var pipeline = new MediaBlocksPipeline();

var fileSource = new UniversalSourceBlock(await UniversalSourceSettings.CreateAsync("input.mp4"));

// Apple ProRes encoder
// AppleProResEncoderSettings exposes Quality (double 0.0-1.0), Bitrate, MaxKeyframeInterval,
// MaxKeyFrameIntervalDuration, AllowFrameReordering, PreserveAlpha, Realtime — not a named profile enum.
var proresSettings = new AppleProResEncoderSettings
{
    Quality = 0.8
};
var proresEncoder = new AppleProResEncoderBlock(proresSettings);
pipeline.Connect(fileSource.VideoOutput, proresEncoder.Input);

// Output to MOV file
var movSink = new MOVSinkBlock(new MOVSinkSettings("output.mov"));
pipeline.Connect(proresEncoder.Output, movSink.CreateNewInput(MediaBlockPadMediaType.Video));

await pipeline.StartAsync();