/// <inheritdoc/>
public bool TryWrite(Lazy <Stream> stream, CodecFormat format, SpanBitmap bmp)
{
try
{
var fmt = GetFormatFromExtension(format);
var clr = _Implementation.ToPixelFormat(Pixel.RGBA32.Format);
if (bmp.PixelFormat.Components.Any(item => item.IsLuminance))
{
clr = _Implementation.ToPixelFormat(Pixel.Luminance8.Format);
}
if (clr.Color == SkiaSharp.SKColorType.Unknown)
{
return(false);
}
using (var skbmp = _Implementation.CloneAsSKImage(bmp, clr))
{
var data = skbmp.Encode(fmt, 95);
data.SaveTo(stream.Value);
}
}
catch (ArgumentException) { return(false); }
return(true);
}
public static void Copy(SpanBitmap src, ref XNA.Texture2D dst, bool fit, Func <int, int, XNA.Texture2D> texFactory)
{
if (dst == null || dst.Width != src.Width || dst.Height != src.Height)
{
if (dst != null)
{
dst.Dispose();
}
dst = null;
}
if (dst == null)
{
dst = texFactory(src.Width, src.Height);
}
if (dst.Format == XNA.SurfaceFormat.Bgr565)
{
_Copy16(src, dst, fit);
return;
}
if (dst.Format == XNA.SurfaceFormat.Bgra32)
{
_Copy32(src, dst, fit);
return;
}
}
public static WIC_WRITABLE ToWritableBitmap(SpanBitmap src)
{
var dst = ToWritableBitmap(src.Info);
dst.SetPixels(0, 0, src);
return(dst);
}
private static void _Copy16(SpanBitmap src, XNA.Texture2D dst, bool fit)
{
if (dst == null)
{
throw new ArgumentNullException(nameof(dst));
}
var fmt = ToInteropFormat(dst.Format);
if (fmt.ByteCount != 2)
{
throw new ArgumentException("invalid pixel size", nameof(dst));
}
var l = dst.Width * dst.Height;
if (_16BitBuffer == null || _16BitBuffer.Length < l)
{
Array.Resize(ref _16BitBuffer, l);
}
var dstx = new SpanBitmap <ushort>(_16BitBuffer, dst.Width, dst.Height, fmt);
fit &= !(src.Width == dst.Width && src.Height == dst.Height);
if (fit)
{
dstx.AsTypeless().FitPixels(src);
}
else
{
dstx.AsTypeless().SetPixels(0, 0, src);
}
dst.SetData(_16BitBuffer);
return;
}
public static void Transfer(SpanBitmap src, GDIBITMAP dst, SpanBitmap.Action2 action)
{
src = src.AsReadOnly();
var rect = new Rectangle(0, 0, dst.Width, dst.Height);
GDIPTR dstBits = null;
try
{
dstBits = dst.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, dst.PixelFormat);
var dstSpan = dstBits
.AsPointerBitmapDangerous()
.AsSpanBitmap();
action(src, dstSpan);
}
finally
{
if (dstBits != null)
{
dst.UnlockBits(dstBits);
}
}
}
public static Imaging.BitmapSampler <TPixel> AsBitmapSampler <TPixel>(this SpanBitmap <TPixel> src)
where TPixel : unmanaged
{
var encoding = GetColorEncoding <TPixel>();
return(new Imaging.BitmapSampler <TPixel>(src.ReadableBytes, src.Info.StepByteSize, src.Width, src.Height, encoding));
}
public static void ComposePixels <TSrcPixel, TDstPixel>(SpanBitmap <TSrcPixel> src, SpanBitmap <TDstPixel> dst, TRANSFORM srcXform, bool useBilinear, float opacity)
where TSrcPixel : unmanaged, Pixel.IConvertTo
where TDstPixel : unmanaged, Pixel.IConvertTo
{
int opacityQ = (int)(opacity * 256);
void _rowProcessorNearest(Span <TDstPixel> dst, SpanQuantized8Sampler <TSrcPixel, Pixel.BGRP32> src, _RowTransformIterator srcIterator)
{
Pixel.BGRP32 srcPixel = default;
Pixel.BGRP32 composer = default;
for (int i = 0; i < dst.Length; ++i)
{
srcIterator.MoveNext(out int sx, out int sy);
src.GetSourcePixelOrDefault(sx, sy).CopyTo(ref srcPixel);
if (srcPixel.A == 0)
{
continue;
}
ref var dstI = ref dst[i];
dstI.CopyTo(ref composer);
composer.SetSourceOver(srcPixel, opacityQ);
composer.CopyTo(ref dstI);
}
}
public static void OpaquePixelsConvert <TSrcPixel, TDstPixel>(SpanBitmap <TSrcPixel> src, SpanBitmap <TDstPixel> dst, TRANSFORM srcXform, bool useBilinear)
where TSrcPixel : unmanaged, Pixel.IConvertTo
where TDstPixel : unmanaged
{
void _rowProcessorNearest(Span <TDstPixel> dst, SpanQuantized8Sampler <TSrcPixel, TSrcPixel> src, _RowTransformIterator srcIterator)
{
for (int i = 0; i < dst.Length; ++i)
{
srcIterator.MoveNext(out int sx, out int sy);
src.GetSourcePixelOrDefault(sx, sy).CopyTo(ref dst[i]);
}
}
void _rowProcessorBilinear(Span <TDstPixel> dst, SpanQuantized8Sampler <TSrcPixel, TSrcPixel> src, _RowTransformIterator srcIterator)
{
for (int i = 0; i < dst.Length; ++i)
{
srcIterator.MoveNext(out int sx, out int sy, out int rx, out int ry);
src.GetSampleOrDefault(sx, sy, rx, ry).CopyTo(ref dst[i]);
}
}
var p = useBilinear
? (_ProcessRowCallback8 <TSrcPixel, TSrcPixel, TDstPixel>)_rowProcessorBilinear
: (_ProcessRowCallback8 <TSrcPixel, TSrcPixel, TDstPixel>)_rowProcessorNearest;
_ProcessRows(dst, src, srcXform, p);
}
public static bool CopyTo(SpanBitmap src, ref ANDROIDBITMAP dst)
{
var refreshed = Reshape(ref dst, src.Info, null);
_PerformCopy(src, dst);
return(refreshed);
}
// https://www.sciencedirect.com/science/article/pii/S1877705813016007
// https://github.com/justadudewhohacks/opencv4nodejs/issues/448#issuecomment-436341650
// https://stackoverflow.com/questions/17887883/image-sharpness-metric
// https://jivp-eurasipjournals.springeropen.com/articles/10.1186/1687-5281-2012-8
// https://www.sciencedirect.com/science/article/pii/S1877705813016007
// https://ieeexplore.ieee.org/document/8073580
// https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.478.82&rep=rep1&type=pdf
public static Double Evaluate(SpanBitmap image, double power = 1)
{
var evaluator = new SharpnessEvaluator(power);
evaluator.AddImage(image);
return(evaluator.SharpnessFactor);
}
private static void _PerformCopy(SpanBitmap src, ANDROIDBITMAP dst)
{
if (src.Info.IsEmpty)
{
return;
}
if (dst == null)
{
return;
}
if (dst.IsRecycled || !dst.IsMutable)
{
throw new ArgumentNullException(nameof(dst));
}
if (!TryGetBitmapInfo(dst.GetBitmapInfo(), dst.IsPremultiplied, out var nfo))
{
throw new Diagnostics.PixelFormatNotSupportedException((dst.GetBitmapInfo().Format, dst.Premultiplied), nameof(dst));
}
var ptr = dst.LockPixels();
if (ptr == IntPtr.Zero)
{
throw new ArgumentNullException("lock", nameof(dst));
}
try { new PointerBitmap(ptr, nfo).AsSpanBitmap().SetPixels(0, 0, src); }
finally { dst.UnlockPixels(); }
}
public static unsafe void CopyPixels <TSrcPixel, TDstPixel>(SpanBitmap <TSrcPixel> src, Image <TDstPixel> dst)
where TSrcPixel : unmanaged
where TDstPixel : unmanaged, IPixel <TDstPixel>
{
if (dst == null)
{
throw new ArgumentNullException(nameof(dst));
}
if (src.Width != dst.Width || src.Height != dst.Height)
{
throw new ArgumentException("dimensions mismatch", nameof(dst));
}
if (sizeof(TSrcPixel) != sizeof(TDstPixel))
{
throw new ArgumentException("Pixel size mismatch", typeof(TDstPixel).Name);
}
src = src.AsReadOnly();
for (int y = 0; y < dst.Height; y++)
{
var srcRow = src.GetScanlinePixels(y);
var dstRow = dst.DangerousGetPixelRowMemory(y).Span;
MEMORYMARSHALL
.Cast <TSrcPixel, TDstPixel>(srcRow)
.CopyTo(dstRow);
}
}
public static TResult ReadAsSpanBitmap <TSelfPixel, TOtherPixel, TResult>(Image <TSelfPixel> self, SpanBitmap <TOtherPixel> other, SpanBitmap <TOtherPixel> .Function2 <TResult> function)
where TSelfPixel : unmanaged, IPixel <TSelfPixel>
where TOtherPixel : unmanaged
{
if (self == null)
{
throw new ArgumentNullException(nameof(self));
}
if (!TryGetExactPixelFormat <TSelfPixel>(out var otherFmt))
{
throw new NotImplementedException($"{typeof(TSelfPixel)}");
}
if (self.DangerousTryGetSinglePixelMemory(out Memory <TSelfPixel> selfMem))
{
var selfBytes = MEMORYMARSHALL.Cast <TSelfPixel, Byte>(selfMem.Span);
var selfBmp = new SpanBitmap <TOtherPixel>(selfBytes, self.Width, self.Height, otherFmt);
return(function(selfBmp.AsReadOnly(), other));
}
else
{
var tempBmp = ImageSharpToolkit
.ToMemoryBitmap <TOtherPixel>(self)
.AsSpanBitmap()
.AsReadOnly();
return(function(tempBmp, other));
}
}
public static SkiaSharp.SKBitmap CloneAsSKBitmap(SpanBitmap bmp)
{
if (!TryGetPixelFormat(bmp.PixelFormat, out var color, out var alpha))
{
throw new ArgumentException("format", nameof(bmp));
}
var img = new SkiaSharp.SKBitmap(bmp.Width, bmp.Height, color, alpha);
var binfo = GetBitmapInfo(img.Info, img.RowBytes);
var ptr = img.GetPixels();
if (ptr == IntPtr.Zero)
{
throw new ArgumentNullException();
}
var dst = new SpanBitmap(ptr, binfo);
dst.SetPixels(0, 0, bmp);
img.NotifyPixelsChanged();
return(img);
}
public static void Transfer(GDIBITMAP src, SpanBitmap dst, SpanBitmap.Action2 action)
{
var rect = new Rectangle(0, 0, dst.Width, dst.Height);
GDIPTR srcBits = null;
try
{
srcBits = src.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, src.PixelFormat);
var srcSpan = srcBits
.AsPointerBitmapDangerous()
.AsSpanBitmap()
.AsReadOnly();
action(srcSpan, dst);
}
finally
{
if (srcBits != null)
{
src.UnlockBits(srcBits);
}
}
}
public readonly bool TryApplyTo(SpanBitmap target)
{
if (_Rnd == null)
{
_Rnd = new Random();
}
for (int y = 0; y < target.Height; ++y)
{
var row = target.UseScanlineBytes(y);
var fourCount = row.Length & ~3;
var rowInts = System.Runtime.InteropServices.MemoryMarshal.Cast <byte, int>(row.Slice(0, fourCount));
for (int x = 0; x < rowInts.Length; ++x)
{
rowInts[x] = _Rnd.Next();
}
for (int x = rowInts.Length * 4; x < row.Length; ++x)
{
row[x] = (Byte)_Rnd.Next();
}
}
return(true);
}
public static bool TryGetBitmapBGR(IDenseTensor <float> src, out SpanBitmap <Vector3> bmp)
{
bmp = default;
var dims = src.Dimensions;
if (dims.Length < 3 || dims.Length > 4)
{
return(false);
}
if (dims.Length == 4)
{
if (dims[0] != 1)
{
return(false);
}
dims = dims.Slice(1);
}
if (dims[2] != 3)
{
return(false);
}
var data = System.Runtime.InteropServices.MemoryMarshal.Cast <float, byte>(src.Span);
bmp = new SpanBitmap <Vector3>(data, dims[1], dims[0], Pixel.BGR96F.Format);
return(true);
}
/// <inheritdoc/>
public bool TryWrite(Lazy <Stream> stream, CodecFormat format, SpanBitmap bmp)
{
var fmt = GetFormatFromExtension(format);
if (fmt == null)
{
return(false);
}
if (!_Implementation.TryGetExactPixelFormat(bmp.PixelFormat, out _))
{
using (var tmp = _Implementation.CloneAsGDIBitmap(bmp))
{
_WriteBitmap(stream.Value, fmt, tmp);
}
}
else
{
void _doSave(PointerBitmap ptr)
{
using (var tmp = _Implementation.WrapOrCloneAsGDIBitmap(ptr))
{
_WriteBitmap(stream.Value, fmt, tmp);
}
}
bmp.PinReadablePointer(_doSave);
}
return(true);
}
public static Image CloneToImageSharp(SpanBitmap src)
{
var dst = CreateImageSharp(src.PixelFormat, src.Width, src.Height);
CopyPixels(src, dst);
return(dst);
}
public static bool CopyTo(this SpanBitmap src, ANDROIDBITMAP dst)
{
if (dst == null)
{
throw new ArgumentNullException(nameof(dst));
}
return(_Implementation.CopyTo(src, dst));
}
public static void WriteRaw(System.IO.BinaryWriter writer, SpanBitmap src, _InBuiltCodec settings)
{
_WriteHeader(writer);
writer.Write((int)1); // planes count
_WritePlane(writer, src, settings);
}
public static Image <TPixel> CloneToImageSharp <TPixel>(SpanBitmap <TPixel> src)
where TPixel : unmanaged, IPixel <TPixel>
{
var dst = new Image <TPixel>(src.Width, src.Height);
CopyPixels(src, dst);
return(dst);
}
public static Image <TPixel> CloneToImageSharp <TPixel>(SpanBitmap src)
where TPixel : unmanaged, IPixel <TPixel>
{
TryGetExactPixelType(src.PixelFormat, out var pixType);
System.Diagnostics.Debug.Assert(pixType == typeof(TPixel));
return(CloneToImageSharp(src.OfType <TPixel>()));
}
public static void CopyPixels(Image src, SpanBitmap dst)
{
if (src is Image <A8> srcA8)
{
CopyPixels(srcA8, dst); return;
}
if (src is Image <L8> srcL8)
{
CopyPixels(srcL8, dst); return;
}
if (src is Image <L16> srcL16)
{
CopyPixels(srcL16, dst); return;
}
if (src is Image <Bgr565> srcBgr565)
{
CopyPixels(srcBgr565, dst); return;
}
if (src is Image <Bgra4444> srcBgra4444)
{
CopyPixels(srcBgra4444, dst); return;
}
if (src is Image <Bgra5551> srcBgra5551)
{
CopyPixels(srcBgra5551, dst); return;
}
if (src is Image <Rgb24> srcRgb24)
{
CopyPixels(srcRgb24, dst); return;
}
if (src is Image <Bgr24> srcBgr24)
{
CopyPixels(srcBgr24, dst); return;
}
if (src is Image <Rgba32> srcRgba32)
{
CopyPixels(srcRgba32, dst); return;
}
if (src is Image <Bgra32> srcBgra32)
{
CopyPixels(srcBgra32, dst); return;
}
if (src is Image <Argb32> srcArgb32)
{
CopyPixels(srcArgb32, dst); return;
}
if (src is Image <RgbaVector> srcRgbaVector)
{
CopyPixels(srcRgbaVector, dst); return;
}
throw new NotImplementedException();
}
public static void CopyPixels(SpanBitmap src, Image dst)
{
if (dst is Image <A8> dstA8)
{
CopyPixels(src, dstA8); return;
}
if (dst is Image <L8> dstL8)
{
CopyPixels(src, dstL8); return;
}
if (dst is Image <L16> dstL16)
{
CopyPixels(src, dstL16); return;
}
if (dst is Image <Bgr565> dstBgr565)
{
CopyPixels(src, dstBgr565); return;
}
if (dst is Image <Bgra4444> dstBgra4444)
{
CopyPixels(src, dstBgra4444); return;
}
if (dst is Image <Bgra5551> dstBgra5551)
{
CopyPixels(src, dstBgra5551); return;
}
if (dst is Image <Rgb24> dstRgb24)
{
CopyPixels(src, dstRgb24); return;
}
if (dst is Image <Bgr24> dstBgr24)
{
CopyPixels(src, dstBgr24); return;
}
if (dst is Image <Rgba32> dstRgba32)
{
CopyPixels(src, dstRgba32); return;
}
if (dst is Image <Bgra32> dstBgra32)
{
CopyPixels(src, dstBgra32); return;
}
if (dst is Image <Argb32> dstArgb32)
{
CopyPixels(src, dstArgb32); return;
}
if (dst is Image <RgbaVector> dstRgbaVector)
{
CopyPixels(src, dstRgbaVector); return;
}
throw new NotImplementedException();
}
private static void _CopyBitmap(SpanBitmap src, ref TARGETBITMAP dst)
{
if (src.IsEmpty)
{
dst = null; return;
}
src.WithWPF().CopyTo(ref dst);
}
/// <inheritdoc/>
public bool TryWrite(Lazy <Stream> stream, CodecFormat format, SpanBitmap bmp)
{
using (var mat = bmp.WithOpenCv().ToMat())
{
mat.WriteToStream(stream.Value, $".{format.ToString().ToLower()}");
}
return(true);
}
private void _UpdateDirect(SpanBitmap src)
{
VerifyAccess();
if (src.WithWPF().CopyTo(ref _FrontBuffer))
{
OnPropertyChanged(_FrontBufferChanged);
}
}
public void WriteFrame(SpanBitmap bmp)
{
_Cache.AsTypeless().SetPixels(0, 0, bmp);
if (_Cache.TryGetBuffer(out var segment))
{
_Writer.WriteFrame(true, segment.Array, segment.Offset, segment.Count);
}
}
public static unsafe OpenCvSharp.Mat <TPixel> CloneAsMat <TPixel>(this SpanBitmap <TPixel> srcSpan)
where TPixel : unmanaged
{
var dst = new OpenCvSharp.Mat <TPixel>(srcSpan.Height, srcSpan.Width);
var dstSpan = dst.AsSpanBitmap();
dstSpan.SetPixels(0, 0, srcSpan);
return(dst);
}