public override VideoFrame GetFrame(int n, ScriptEnvironment env)
{
if (noRotate)
{
return(base.GetFrame(n, env));
}
var res = NewVideoFrame(env);
using (var frame = Child.GetFrame(n, env))
{
var vi = Child.GetVideoInfo();
Parallel.ForEach(planes, plane =>
{
var zero = plane == YUVPlanes.PLANAR_U || plane == YUVPlanes.PLANAR_V ? 128 : 0;
OverlayUtils.MemSet(res.GetWritePtr(plane), zero, res.GetPitch(plane) * res.GetHeight(plane));
// get source image size
var height = frame.GetHeight(plane);
var width = vi.width / (vi.height / height);
var pixelSize = frame.GetRowSize(plane) / width;
NativeUtils.BilinearRotate(
frame.GetReadPtr(plane), frame.GetRowSize(plane) / pixelSize, frame.GetHeight(plane),
frame.GetPitch(plane),
res.GetWritePtr(plane), res.GetRowSize(plane) / pixelSize, res.GetHeight(plane),
res.GetPitch(plane),
angle, pixelSize);
});
}
return(res);
}