How to convert ImageData to SkiaSharp.SkiBitmap

[SamGuoMsft]

How to convert ImageData to SkiaSharp.SkiBitmap

[hey-red]

Here is example. It's is not optimized, but should work.

using System.Runtime.InteropServices;

using FFMediaToolkit.Decoding;
using FFMediaToolkit.Graphics;

using SkiaSharp;

var file = MediaFile.Open(@"/path/to/file.mp4", new MediaOptions
{
    VideoPixelFormat = ImagePixelFormat.Rgba32 // Set skia supported pix format
});

if (file.Video.TryGetNextFrame(out var imageData))
{
    var gcHandle = GCHandle.Alloc(imageData.Data.ToArray(), GCHandleType.Pinned);

    using var bitmap = new SKBitmap();
    var imageInfo = new SKImageInfo(imageData.ImageSize.Width, imageData.ImageSize.Height, SKColorType.Rgba8888, SKAlphaType.Unpremul);

    bitmap.InstallPixels(imageInfo, gcHandle.AddrOfPinnedObject(), imageInfo.RowBytes, delegate { gcHandle.Free(); });

    // Save to file
    using var fs = File.OpenWrite(@"/path/to/image.png");
    bitmap.Encode(fs, SKEncodedImageFormat.Png, 100);
}