public override void Dispose()
{
if (_pixelBuffer is null)
{
return;
}
// Copy pixels into this column
int colIndex = _colIndex;
int width = _pixelBuffer.Width;
Span <TPixel> sourceSpan = MemoryMarshal.Cast <byte, TPixel>(_buffer.AsSpan(0, _length * Unsafe.SizeOf <TPixel>()));
Span <TPixel> destinationSpan = _pixelBuffer.GetSpan().Slice(_start * width);
for (int i = 0; i < sourceSpan.Length; i++)
{
destinationSpan[colIndex + i * width] = sourceSpan[i];
}
_pixelBuffer = null;
if (_parent != null)
{
TiffPixelBufferWriterAdapter <TPixel> parent = _parent;
_parent = null;
if (Interlocked.CompareExchange(ref parent._cachedColHandle, this, null) != null)
{
ReleaseBuffer();
}
}
}
public override Span <TPixel> GetSpan()
{
if (_pixelBuffer is null)
{
throw new ObjectDisposedException(GetType().FullName);
}
return(_pixelBuffer.GetSpan().Slice(_start, _length));
}
public void TestMemoryPixelBuffer()
{
ITiffPixelBuffer <TiffGray8> pixelBuffer = InitializePixelBuffer(out TiffGray8[] pixels);
Assert.Equal(3, pixelBuffer.Width);
Assert.Equal(2, pixelBuffer.Height);
Span <TiffGray8> span = pixelBuffer.GetSpan();
Assert.True(Unsafe.AreSame(ref pixels[0], ref span[0]));
Assert.Equal(6, span.Length);
span[0] = new TiffGray8(0xCD);
span[5] = new TiffGray8(0xEF);
Assert.Equal(0xCD, pixels[0].Intensity);
Assert.Equal(0xEF, pixels[5].Intensity);
Assert.Throws <ArgumentOutOfRangeException>("width", () => TiffPixelBuffer.Wrap(Array.Empty <TiffGray8>(), -1, 0));
Assert.Throws <ArgumentOutOfRangeException>("height", () => TiffPixelBuffer.Wrap(Array.Empty <TiffGray8>(), 0, -1));
}