private IEnumerator GetThumbnail(GCHandle thumbnailHandle, Action <Texture2D> callback, ThumbnailDelegate callbackObject)
{
yield return(new WaitUntil(() => Marshal.ReadIntPtr(thumbnailHandle.AddrOfPinnedObject()) != IntPtr.Zero));
MonoBehaviour.Destroy(callbackObject); // We don't need this anymore
var pixelBuffer = Marshal.ReadIntPtr(thumbnailHandle.AddrOfPinnedObject());
var width = Marshal.ReadInt32(new IntPtr(thumbnailHandle.AddrOfPinnedObject().ToInt32() + sizeof(int)));
var height = Marshal.ReadInt32(new IntPtr(thumbnailHandle.AddrOfPinnedObject().ToInt32() + 2 * sizeof(int)));
var thumbnail = new Texture2D(width, height, TextureFormat.RGBA32, false);
thumbnail.LoadRawTextureData(pixelBuffer, width * height * 4);
thumbnail.Apply();
NatShareBridge.FreeThumbnail(thumbnailHandle.AddrOfPinnedObject());
thumbnailHandle.Free();
callback(thumbnail);
}
void INatShare.GetThumbnail(string videoPath, Action <Texture2D> callback, float time)
{
IntPtr pixelBuffer = IntPtr.Zero; int width = 0, height = 0;
if (!NatShareBridge.GetThumbnail(videoPath, time, ref pixelBuffer, ref width, ref height))
{
Debug.LogError("NatShare Error: Failed to get thumbnail for video at path: " + videoPath);
callback(null);
}
var thumbnail = new Texture2D(width, height, TextureFormat.BGRA32, false);
thumbnail.LoadRawTextureData(pixelBuffer, width * height * 4);
thumbnail.Apply();
NatShareBridge.FreeThumbnail(pixelBuffer);
callback(thumbnail);
}