public override VideoFrame GetFrame(int n, ScriptEnvironment env)
{
var resFrame = NewVideoFrame(env);
if (realPlanar)
{
OverlayUtils.ResetChroma(resFrame);
}
using (var srcFrame = base.GetFrame(n, env))
{
unsafe
{
var src = (byte *)srcFrame.GetReadPtr();
var srcStride = srcFrame.GetPitch();
var dest = (byte *)resFrame.GetWritePtr();
var destStride = resFrame.GetPitch();
var rowSize = resFrame.GetRowSize();
for (var y = 0; y < height; y++, src += srcStride, dest += destStride)
{
for (var x = 0; x < rowSize; x++)
{
var val = src[x];
dest[x] = val >= low && val <= high ? byte.MaxValue : byte.MinValue;
}
}
}
}
return(resFrame);
}
protected override void Dispose(bool A_0)
{
Filters.Remove(this);
OverlayUtils.Dispose(this);
base.Dispose(A_0);
topLevel.Dispose();
}
public sealed override void Initialize(AVSValue args, ScriptEnvironment env)
{
try
{
using (new DynamicEnvironment(env))
{
OverlayUtils.InitArgs(this, args);
Initialize(args);
base.Initialize(args, env);
}
topLevel = new DynamicEnvironment(env, false);
AfterInitialize();
topLevel.Detach();
}
catch (Exception ex)
{
try
{
DisposeAll();
}
catch
{
// ignored
}
finally
{
if (ex is SEHException)
{
throw new AvisynthException("Runtime function call error: " + DynamicEnvironment.LastError);
}
DynamicEnvironment.LastError = ex.Message;
throw new AvisynthException(ex.Message);
}
}
}
public override void Initialize(AVSValue args, ScriptEnvironment env)
{
width = Child?.GetVideoInfo().width ?? args[1].AsInt();
height = Child?.GetVideoInfo().height ?? args[2].AsInt();
left = args[3].AsInt(left);
top = args[4].AsInt(top);
right = args[5].AsInt(right);
bottom = args[6].AsInt(bottom);
noise = args[7].AsBool(noise);
gradient = args[8].AsBool(gradient);
if (!noise && !gradient)
{
env.ThrowError("No gradient, no noise");
}
seed = args[9].AsInt(seed);
var vi = GetVideoInfo();
vi.width = width;
vi.height = height;
vi.pixel_type = Child?.GetVideoInfo().pixel_type ?? ColorSpaces.CS_BGR24;
vi.num_frames = Child?.GetVideoInfo().num_frames ?? 1000;
vi.fps_numerator = Child?.GetVideoInfo().fps_numerator ?? 25;
vi.fps_denominator = Child?.GetVideoInfo().fps_denominator ?? 1;
SetVideoInfo(ref vi);
realPlanar = Child == null || OverlayUtils.IsRealPlanar(Child); //Y8 is interleaved
rgb = GetVideoInfo().IsRGB();
}
private void Initialize(Clip src, Clip over)
{
var srcInfo = src.GetVideoInfo();
var overInfo = over.GetVideoInfo();
var vi = src.GetVideoInfo();
if (Width > 0)
{
vi.width = Width;
}
if (Height > 0)
{
vi.height = Height;
}
var srcBitDepth = srcInfo.pixel_type.GetBitDepth();
var overBitDepth = overInfo.pixel_type.GetBitDepth();
if (srcBitDepth != overBitDepth && ColorAdjust > 0 && ColorAdjust < 1)
{
throw new AvisynthException("ColorAdjust -1, 0, 1 only allowed when video bit depth is different");
}
var targetBitDepth = ColorAdjust >= 1 - double.Epsilon ? overBitDepth : srcBitDepth;
vi.pixel_type = vi.pixel_type.ChangeBitDepth(targetBitDepth);
vi.num_frames = Child.GetVideoInfo().num_frames;
planes = OverlayUtils.GetPlanes(vi.pixel_type);
targetSubsample = new Size(srcInfo.pixel_type.GetWidthSubsample(), srcInfo.pixel_type.GetHeightSubsample());
SetVideoInfo(ref vi);
}
public sealed override void Initialize(AVSValue args, ScriptEnvironment env)
{
try
{
using (new DynamicEnvironment(env))
{
OverlayUtils.InitArgs(this, args);
Initialize(args);
base.Initialize(args, env);
}
topLevel = new DynamicEnvironment(env, false);
AfterInitialize();
topLevel.Detach();
}
catch (Exception ex)
{
try
{
DisposeAll();
}
finally
{
throw ex;
}
}
}
protected override void Initialize(AVSValue args)
{
LimitedRange = LimitedRange && GetVideoInfo().IsPlanar();
planes = GetVideoInfo().pixel_type.HasFlag(ColorSpaces.CS_INTERLEAVED)
? new[] { default(YUVPlanes) }
: (Channels ?? "yuv").ToCharArray().Select(p => Enum.Parse(typeof(YUVPlanes), "PLANAR_" + p, true))
.Cast <YUVPlanes>().ToArray();
realChannels = GetVideoInfo().IsPlanar()
? new[] { 0 }
: (Channels ?? "rgb").ToLower().ToCharArray().Select(p => "bgr".IndexOf(p)).ToArray();
if (!OverlayUtils.IsRealPlanar(Child))
{
planes = new[] { default(YUVPlanes) }
}
;
sampleBits = Sample.GetVideoInfo().pixel_type.GetBitDepth();
referenceBits = Reference.GetVideoInfo().pixel_type.GetBitDepth();
var vi = GetVideoInfo();
vi.pixel_type = vi.pixel_type.ChangeBitDepth(referenceBits);
SetVideoInfo(ref vi);
var cacheSize = tr * 2 + 1;
var cacheKey = StaticEnv.GetEnv2() == null ? CacheType.CACHE_25_ALL : CacheType.CACHE_GENERIC;
Child.SetCacheHints(cacheKey, cacheSize);
Sample.SetCacheHints(cacheKey, cacheSize);
Reference.SetCacheHints(cacheKey, cacheSize);
SampleMask?.SetCacheHints(cacheKey, cacheSize);
ReferenceMask?.SetCacheHints(cacheKey, cacheSize);
if (Intensity < 1 && sampleBits != referenceBits)
{
throw new AvisynthException("Intensity < 1 is not allowed when sample and reference bit depth are not equal");
}
}
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);
}
protected VideoFrame Copy(VideoFrame frame)
{
var res = NewVideoFrame(StaticEnv);
Copy(frame, res, OverlayUtils.GetPlanes(GetVideoInfo().pixel_type));
return(res);
}
protected override VideoFrame GetFrame(int n)
{
OverlayInfo info;
lock (Child)
using (var infoFrame = Child.GetFrame(n, StaticEnv))
info = OverlayInfo.FromFrame(infoFrame).First();
var crop = info.GetCrop();
var hybrid = DynamicEnv.Invoke(Function,
Engine, Source, Overlay, info.X, info.Y, info.Angle / 100.0, info.Width, info.Height,
crop.Left, crop.Top, crop.Right, crop.Bottom, info.Diff);
if (Debug)
{
hybrid = hybrid.Subtitle(info.ToString().Replace("\n", "\\n"), lsp: 0);
}
var res = NewVideoFrame(StaticEnv);
using (VideoFrame frame = hybrid[n])
{
Parallel.ForEach(new[] { YUVPlanes.PLANAR_Y, YUVPlanes.PLANAR_U, YUVPlanes.PLANAR_V }, plane =>
{
for (var y = 0; y < frame.GetHeight(plane); y++)
{
OverlayUtils.CopyMemory(res.GetWritePtr(plane) + y * res.GetPitch(plane),
frame.GetReadPtr(plane) + y * frame.GetPitch(plane), res.GetRowSize(plane));
}
});
}
return(res);
}
protected void Copy(VideoFrame frame, VideoFrame res, YUVPlanes[] planes)
{
using (frame)
{
Parallel.ForEach(planes, plane => OverlayUtils.CopyPlane(frame, res, plane));
}
}
protected override VideoFrame GetFrame(int n)
{
OverlayInfo info;
lock (Child)
using (var infoFrame = Child.GetFrame(n, StaticEnv))
info = OverlayInfo.FromFrame(infoFrame);
var hybrid = RenderFrame(info);
if (debug)
{
hybrid = hybrid.Subtitle(info.ToString().Replace("\n", "\\n"), lsp: 0);
}
var res = NewVideoFrame(StaticEnv);
using (VideoFrame frame = hybrid[n])
{
Parallel.ForEach(new[] { YUVPlanes.PLANAR_Y, YUVPlanes.PLANAR_U, YUVPlanes.PLANAR_V }, plane =>
{
for (var y = 0; y < frame.GetHeight(plane); y++)
{
OverlayUtils.CopyMemory(res.GetWritePtr(plane) + y * res.GetPitch(plane),
frame.GetReadPtr(plane) + y * frame.GetPitch(plane), res.GetRowSize(plane));
}
});
}
return(res);
}
public override void Initialize(AVSValue args, ScriptEnvironment env)
{
low = args[1].AsInt(byte.MinValue);
high = args[2].AsInt(byte.MaxValue);
width = GetVideoInfo().width;
height = GetVideoInfo().height;
realPlanar = OverlayUtils.IsRealPlanar(Child);
}
protected override void Dispose(bool disposing)
{
Filters.Remove(this);
base.Dispose(disposing);
OverlayUtils.Dispose(this);
topLevel?.Dispose();
topLevel = null;
}
protected override VideoFrame GetFrame(int n)
{
var allPlanes = OverlayUtils.GetPlanes(GetVideoInfo().pixel_type);
if (Smooth > 0)
{
return(Copy(GetFrameWithSmooth(n)));
}
var output = NewVideoFrame(StaticEnv);
using (var src = Source.GetFrame(n, StaticEnv))
using (var over = Overlay.GetFrame(n, StaticEnv))
{
if (GetVideoInfo().IsRGB() && realChannels.Length < 3 || Source.IsRealPlanar() && planes.Length < 3)
{
Parallel.ForEach(allPlanes, parallelOptions, plane => OverlayUtils.CopyPlane(src, output, plane));
}
unsafe
{
Parallel.ForEach(planes, parallelOptions, plane =>
{
var pixelSize = GetVideoInfo().IsRGB() ? 3 : 1;
var size = new Size(src.GetRowSize(plane), src.GetHeight(plane));
var srcStride = src.GetPitch(plane);
var overStride = over.GetPitch(plane);
Parallel.ForEach(realChannels, parallelOptions, channel =>
{
Parallel.For(0, size.Height, parallelOptions, y =>
{
var srcData = (byte *)src.GetReadPtr(plane) + y * srcStride + channel;
var overData = (byte *)over.GetReadPtr(plane) + y * overStride + channel;
var writer = (byte *)output.GetWritePtr(plane) + y * output.GetPitch(plane) + channel;
for (var x = 0; x < size.Width; x += pixelSize)
{
var srcComplexity = GetComplexity(srcData, x, y, pixelSize, srcStride, size, Steps);
var overComplexity = GetComplexity(overData, x, y, pixelSize, overStride, size, Steps);
var diff = srcComplexity - overComplexity;
var srcPreferred = diff > Preference;
if (Mask)
{
writer[x] = srcPreferred ? byte.MinValue : byte.MaxValue;
}
else
{
writer[x] = srcPreferred ? srcData[x] : overData[x];
}
}
});
});
});
}
}
return(output);
}
public override VideoFrame GetFrame(int n, ScriptEnvironment env)
{
var resFrame = NewVideoFrame(env);
if (realPlanar && greyMask)
{
OverlayUtils.ResetChroma(resFrame);
}
using var srcFrame = base.GetFrame(n, env);
unsafe
{
var planes = greyMask ? new[] { default(YUVPlanes) } : OverlayUtils.GetPlanes(GetVideoInfo().pixel_type);
Parallel.ForEach(planes, plane =>
{
var srcStride = srcFrame.GetPitch(plane);
var destStride = resFrame.GetPitch(plane);
var width = resFrame.GetRowSize(plane) / (hdr ? 2 : 1);
var height = resFrame.GetHeight(plane);
if (hdr)
{
var src = (ushort *)srcFrame.GetReadPtr(plane);
var dest = (ushort *)resFrame.GetWritePtr(plane);
Parallel.For(0, height, y =>
{
var srcData = src + y * srcStride;
var destData = dest + y * destStride;
for (var x = 0; x < width; x++)
{
var val = srcData[x];
destData[x] = val >= low && val <= high ? ushort.MaxValue : ushort.MinValue;
}
});
}
else
{
var src = (byte *)srcFrame.GetReadPtr(plane);
var dest = (byte *)resFrame.GetWritePtr(plane);
Parallel.For(0, height, y =>
{
var srcData = src + y * srcStride;
var destData = dest + y * destStride;
for (var x = 0; x < width; x++)
{
var val = srcData[x];
destData[x] = val >= low && val <= high ? byte.MaxValue : byte.MinValue;
}
});
}
});
}
return(resFrame);
}
public dynamic ResizeRotate(
Clip clip,
string resizeFunc, string rotateFunc,
int width, int height, int angle = 0,
RectangleD crop = default, Warp warp = default)
{
if (clip == null)
{
return(null);
}
var dynamic = clip.Dynamic();
if (warp != null && !warp.IsEmpty)
{
dynamic = dynamic.Warp(warp.ToArray(), relative: true, resample: OverlayUtils.GetWarpResampleMode(resizeFunc));
}
var vi = clip.GetVideoInfo();
if (crop.IsEmpty && width == vi.width && height == vi.height)
{
return(dynamic);
}
var intCrop = Rectangle.FromLTRB(
(int)Math.Floor(crop.Left),
(int)Math.Floor(crop.Top),
(int)Math.Floor(crop.Right),
(int)Math.Floor(crop.Bottom)
);
if (!intCrop.IsEmpty)
{
dynamic = dynamic.Crop(intCrop.Left, intCrop.Top, -intCrop.Right, -intCrop.Bottom);
crop = RectangleD.FromLTRB(
crop.Left - intCrop.Left,
crop.Top - intCrop.Top,
crop.Right - intCrop.Right,
crop.Bottom - intCrop.Bottom
);
}
if (crop.IsEmpty)
{
dynamic = dynamic.Invoke(resizeFunc, width, height);
}
else
{
dynamic = dynamic.Invoke(resizeFunc, width, height,
src_left: crop.Left, src_top: crop.Top,
src_width: -crop.Right, src_height: -crop.Bottom);
}
return(angle == 0 ? dynamic : dynamic.Invoke(rotateFunc, angle / 100.0));
}
public override VideoFrame GetFrame(int n, ScriptEnvironment env)
{
var resFrame = NewVideoFrame(env);
if (realPlanar)
{
OverlayUtils.ResetChroma(resFrame);
}
using var srcFrame = base.GetFrame(n, env);
unsafe
{
var srcStride = srcFrame.GetPitch();
var destStride = resFrame.GetPitch();
if (hdr)
{
var src = (ushort *)srcFrame.GetReadPtr();
var dest = (ushort *)resFrame.GetWritePtr();
Parallel.For(0, height, y =>
{
var srcData = src + y * srcStride;
var destData = dest + y * destStride;
for (var x = 0; x < width; x++)
{
var val = srcData[x];
destData[x] = val >= low && val <= high ? ushort.MaxValue : ushort.MinValue;
}
});
}
else
{
var src = (byte *)srcFrame.GetReadPtr();
var dest = (byte *)resFrame.GetWritePtr();
Parallel.For(0, height, y =>
{
var srcData = src + y * srcStride;
var destData = dest + y * destStride;
for (var x = 0; x < width; x++)
{
var val = srcData[x];
destData[x] = val >= low && val <= high ? byte.MaxValue : byte.MinValue;
}
});
}
}
return(resFrame);
}
protected override VideoFrame GetFrame(int n)
{
var info = GetOverlayInfo(n);//.Resize(Source.GetSize(), Overlay.GetSize());
if (Invert)
{
info = info.Invert();
}
var res = NewVideoFrame(StaticEnv);
var outClips = contexts.Select(ctx => RenderFrame(ctx, info));
//outClips = contexts.Select(ctx => ctx.Source);
var hybrid = contexts.Count == 1 ? outClips.First() : DynamicEnv.CombinePlanes(outClips,
planes: contexts.Select(p => p.Plane.GetLetter()).Aggregate(string.Concat),
pixel_type: $"YUV4{4 / targetSubsample.Width}{(4 / targetSubsample.Width - 4) + 4 / targetSubsample.Height}P{GetVideoInfo().pixel_type.GetBitDepth()}");
if (BlankColor >= 0 && Mode == FramingMode.Fill)
{
var ctx = contexts.First();
var frameParams = ctx.CalcFrame(info);
var mask = DynamicEnv.StaticOverlayRender(ctx.Source.ConvertToY8(), ctx.Overlay.ConvertToY8(),
info.X, info.Y, info.Angle, info.Width, info.Height, info.GetCrop(), info.Diff, overlayMode: "blend",
width: frameParams.FinalWidth, height: frameParams.FinalHeight, mode: (int)FramingMode.Mask);
mask = InitClip(mask, ctx.TargetInfo.Width, ctx.TargetInfo.Height, 0xFF8080).Overlay(mask, frameParams.FinalX, frameParams.FinalY);
var background = InitClip(hybrid, ctx.TargetInfo.Width, ctx.TargetInfo.Height, ctx.BlankColor);//, ctx.TargetInfo.Info.IsRGB() ? "RGB24" : "YV24");
hybrid = hybrid.Overlay(background, mask: mask.Invert());
}
if (Debug)
{
hybrid = hybrid.Subtitle(info.DisplayInfo().Replace("\n", "\\n"), lsp: 0);
}
using VideoFrame frame = hybrid[info.FrameNumber];
Parallel.ForEach(planes, plane =>
{
for (var y = 0; y < frame.GetHeight(plane); y++)
{
OverlayUtils.CopyMemory(res.GetWritePtr(plane) + y * res.GetPitch(plane),
frame.GetReadPtr(plane) + y * frame.GetPitch(plane), res.GetRowSize(plane));
}
});
return(res);
}
public sealed override void Initialize(AVSValue args, ScriptEnvironment env)
{
using (new DynamicEnviroment(env))
{
try
{
OverlayUtils.InitArgs(this, args);
Initialize(args);
base.Initialize(args, env);
}
catch
{
DisposeAll();
throw;
}
}
}
protected override void Initialize(AVSValue args)
{
LimitedRange = LimitedRange && GetVideoInfo().IsPlanar();
planes = GetVideoInfo().IsRGB()
? new[] { default(YUVPlanes) }
: (Channels ?? "yuv").ToCharArray().Select(p => Enum.Parse(typeof(YUVPlanes), "PLANAR_" + p, true))
.Cast <YUVPlanes>().ToArray();
realChannels = GetVideoInfo().IsPlanar()
? new[] { 0 }
: (Channels ?? "rgb").ToLower().ToCharArray().Select(p => "bgr".IndexOf(p)).ToArray();
if (!OverlayUtils.IsRealPlanar(Child))
{
planes = new[] { default(YUVPlanes) }
}
;
var vi = GetVideoInfo();
var refVi = Reference.GetVideoInfo();
sampleBits = vi.pixel_type.GetBitDepth();
referenceBits = refVi.pixel_type.GetBitDepth();
vi.pixel_type = vi.pixel_type.ChangeBitDepth(referenceBits);
SetVideoInfo(ref vi);
}
public override VideoFrame GetFrame(int n, ScriptEnvironment env)
{
var frame = NewVideoFrame(env);
if (realPlanar)
{
OverlayUtils.ResetChroma(frame);
}
OverlayUtils.MemSet(frame.GetWritePtr(), byte.MaxValue, frame.GetHeight() * frame.GetPitch());
var stride = frame.GetPitch();
var pixelSize = frame.GetRowSize() / GetVideoInfo().width;
var random = new Random(seed == int.MaxValue ? n : seed);
unsafe
{
void LeftRight(int length, Func <int, int> offset)
{
if (length > 0)
{
for (var x = 0; x < length; x++)
{
var data = (byte *)frame.GetWritePtr() + offset(x) * pixelSize;
var gradientVal = GradientVal(x, length);
for (var y = 0; y < height; y++, data += stride)
{
var val = gradientVal;
if (noise && random.Next(length + 1) > x && random.Next(length + 1) > x)
{
val = 0;
}
if (val != byte.MaxValue)
{
for (var i = 0; i < pixelSize; i++)
{
data[i] = val;
}
}
}
}
}
}
void TopBottom(int length, Func <int, int> offset)
{
if (length > 0)
{
for (var y = 0; y < length; y++)
{
var data = (byte *)frame.GetWritePtr() + offset(rgb ? (height - y - 1) : y) * stride;
var gradientVal = GradientVal(y, length);
for (var x = 0; x < width; x++, data += pixelSize)
{
var val = gradientVal;
if (noise && random.Next(length + 1) > y && random.Next(length + 1) > y)
{
val = 0;
}
if (val != byte.MaxValue && data[0] > val)
{
for (var i = 0; i < pixelSize; i++)
{
data[i] = val;
}
}
}
}
}
}
LeftRight(left, x => x);
LeftRight(right, x => width - x - 1);
TopBottom(top, y => y);
TopBottom(bottom, y => height - y - 1);
}
return(frame);
}
public override VideoFrame GetFrame(int n, ScriptEnvironment env)
{
if (noRotate)
{
return(base.GetFrame(n, env));
}
var res = NewVideoFrame(env);
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 oldXradius = (width - 1) / 2.0;
var oldYradius = (height - 1) / 2.0;
var pixelSize = frame.GetRowSize(plane) / width;
// get destination image size
var newWidth = GetVideoInfo().width;
var newHeight = GetVideoInfo().height;
var newXradius = (newWidth - 1) / 2.0;
var newYradius = (newHeight - 1) / 2.0;
// angle's sine and cosine
var angleRad = -angle * Math.PI / 180;
var angleCos = Cos(angleRad);
var angleSin = Sin(angleRad);
var ymax = height - 1;
var xmax = width - 1;
var srcStride = frame.GetPitch(plane);
var dstOffset = res.GetPitch(plane) - res.GetRowSize(plane);
unsafe
{
var src = (byte *)frame.GetReadPtr(plane);
var dst = (byte *)res.GetWritePtr(plane);
var cy = -newYradius;
for (int y = 0; y < newHeight; y++, cy++)
{
// do some pre-calculations of source points' coordinates
// (calculate the part which depends on y-loop, but does not
// depend on x-loop)
var tx = angleSin * cy + oldXradius;
var ty = angleCos * cy + oldYradius;
var cx = -newXradius;
for (int x = 0; x < newWidth; x++, dst += pixelSize, cx++)
{
// coordinates of source point
var ox = tx + angleCos * cx;
var oy = ty - angleSin * cx;
// top-left coordinate
var ox1 = (int)ox;
var oy1 = (int)oy;
// validate source pixel's coordinates
if (ox1 >= 0 && oy1 >= 0 && ox1 < width && oy1 < height)
{
// bottom-right coordinate
var ox2 = ox1 == xmax ? ox1 : ox1 + 1;
var oy2 = oy1 == ymax ? oy1 : oy1 + 1;
var dx1 = ox - ox1;
if (dx1 < 0)
{
dx1 = 0;
}
var dx2 = 1.0f - dx1;
var dy1 = oy - oy1;
if (dy1 < 0)
{
dy1 = 0;
}
var dy2 = 1.0f - dy1;
// get four points
byte *p1, p2;
p1 = p2 = src + oy1 * srcStride;
p1 += ox1 * pixelSize;
p2 += ox2 * pixelSize;
byte *p3, p4;
p3 = p4 = src + oy2 * srcStride;
p3 += ox1 * pixelSize;
p4 += ox2 * pixelSize;
// interpolate using 4 points
for (var z = 0; z < pixelSize; z++)
{
dst[z] = (byte)(
dy2 * (dx2 * p1[z] + dx1 * p2[z]) +
dy1 * (dx2 * p3[z] + dx1 * p4[z]));
}
}
}
dst += dstOffset;
}
}
});
return(res);
}
protected override VideoFrame GetFrame(int n)
{
var frame = NewVideoFrame(StaticEnv);
if (realPlanar)
{
OverlayUtils.ResetChroma(frame);
}
OverlayUtils.MemSet(frame.GetWritePtr(), byte.MaxValue, frame.GetHeight() * frame.GetPitch());
var stride = frame.GetPitch() / byteDepth;
var pixelSize = frame.GetRowSize() / (GetVideoInfo().width *byteDepth);
var random = new FastRandom(Seed == 0 ? n : Seed);
unsafe
{
void LeftRightByte(int length, Func <int, int> offset)
{
if (length == 0)
{
return;
}
for (var x = 0; x < length; x++)
{
var data = (byte *)frame.GetWritePtr() + offset(x) * pixelSize;
var gradientVal = GradientValByte(x, length);
for (var y = 0; y < Height; y++, data += stride)
{
var val = gradientVal;
if (Noise && random.Next(length) > x && random.Next(length) > x)
{
val = 0;
}
if (val != byte.MaxValue)
{
for (var i = 0; i < pixelSize; i++)
{
data[i] = val;
}
}
}
}
}
void TopBottomByte(int length, Func <int, int> offset)
{
if (length == 0)
{
return;
}
for (var y = 0; y < length; y++)
{
var data = (byte *)frame.GetWritePtr() + offset(rgb ? (Height - y - 1) : y) * stride;
var gradientVal = GradientValByte(y, length);
for (var x = 0; x < Width; x++, data += pixelSize)
{
var val = gradientVal;
if (Noise && random.Next(length) > y && random.Next(length) > y)
{
val = 0;
}
if (val != byte.MaxValue && data[0] > val)
{
for (var i = 0; i < pixelSize; i++)
{
data[i] = val;
}
}
}
}
}
void LeftRightShort(int length, Func <int, int> offset)
{
if (length == 0)
{
return;
}
for (var x = 0; x < length; x++)
{
var data = (ushort *)frame.GetWritePtr() + offset(x) * pixelSize;
var gradientVal = GradientValShort(x, length);
for (var y = 0; y < Height; y++, data += stride)
{
var val = gradientVal;
if (Noise && random.Next(length) > x && random.Next(length) > x)
{
val = 0;
}
if (val != shortMaxValue)
{
for (var i = 0; i < pixelSize; i++)
{
data[i] = val;
}
}
}
}
}
void TopBottomShort(int length, Func <int, int> offset)
{
if (length == 0)
{
return;
}
for (var y = 0; y < length; y++)
{
var data = (ushort *)frame.GetWritePtr() + offset(rgb ? (Height - y - 1) : y) * stride;
var gradientVal = GradientValShort(y, length);
for (var x = 0; x < Width; x++, data += pixelSize)
{
var val = gradientVal;
if (Noise && random.Next(length) > y && random.Next(length) > y)
{
val = 0;
}
if (val != shortMaxValue && data[0] > val)
{
for (var i = 0; i < pixelSize; i++)
{
data[i] = val;
}
}
}
}
}
if (GetVideoInfo().pixel_type.GetBitDepth() == 8)
{
Parallel.Invoke(() => LeftRightByte(Left, x => x), () => LeftRightByte(Right, x => Width - x - 1));
Parallel.Invoke(() => TopBottomByte(Top, y => y), () => TopBottomByte(Bottom, y => Height - y - 1));
}
else
{
Parallel.Invoke(() => LeftRightShort(Left, x => x), () => LeftRightShort(Right, x => Width - x - 1));
Parallel.Invoke(() => TopBottomShort(Top, y => y), () => TopBottomShort(Bottom, y => Height - y - 1));
}
}
return(frame);
}