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));
}
public void Setup()
{
TiffGray8[] image = new TiffGray8[8192 * 8192];
_image = TiffPixelBuffer.WrapReadOnly(image, 8192, 8192);
var builder = new TiffImageEncoderBuilder();
builder.PhotometricInterpretation = TiffPhotometricInterpretation.WhiteIsZero;
builder.Compression = Compression;
builder.MaxDegreeOfParallelism = DegreeOfParallelism;
// Strip encoder
builder.IsTiled = false;
builder.RowsPerStrip = 256;
_stripEncoder = builder.Build <TiffGray8>();
// Tile encoder
builder.IsTiled = false;
builder.TileSize = new TiffSize(512, 512);
_tileEncoder = builder.Build <TiffGray8>();
}
public async Task Setup()
{
TiffGray8[] image = new TiffGray8[8192 * 8192];
_scratchSpace = TiffPixelBuffer.Wrap(image, 8192, 8192);
var builder = new TiffImageEncoderBuilder();
builder.PhotometricInterpretation = TiffPhotometricInterpretation.WhiteIsZero;
builder.Compression = Compression;
// Generate a image with many strips
var ms = new MemoryStream();
builder.IsTiled = false;
builder.RowsPerStrip = 256;
await GenerateImageAsync(ms, builder, _scratchSpace);
_stripTestTiff = ms.ToArray();
ms.SetLength(0);
// Generate a image with many tiles
builder.IsTiled = true;
builder.TileSize = new TiffSize(512, 512);
await GenerateImageAsync(ms, builder, _scratchSpace);
_tileTestTiff = ms.ToArray();
_stripReader = await TiffFileReader.OpenAsync(_stripTestTiff);
_stripDecoder = await _stripReader.CreateImageDecoderAsync(new TiffImageDecoderOptions { MaxDegreeOfParallelism = DegreeOfParallelism });
await _stripDecoder.DecodeAsync(_scratchSpace);
_tileReader = await TiffFileReader.OpenAsync(_tileTestTiff);
_tileDecoder = await _tileReader.CreateImageDecoderAsync(new TiffImageDecoderOptions { MaxDegreeOfParallelism = DegreeOfParallelism });
await _tileDecoder.DecodeAsync(_scratchSpace);
}
public async Task Setup()
{
TiffGray8[] image = new TiffGray8[8192 * 8192];
_scratchSpace = TiffPixelBuffer.Wrap(image, 8192, 8192);
var builder = new TiffImageEncoderBuilder();
builder.PhotometricInterpretation = TiffPhotometricInterpretation.BlackIsZero;
builder.Compression = TiffCompression.NoCompression;
// Generate a image with many strips
var ms = new MemoryStream();
builder.IsTiled = false;
builder.RowsPerStrip = 1;
await GenerateImageAsync(ms, builder, _scratchSpace);
_stripTestTiff = ms.ToArray();
ms.SetLength(0);
// Generate a image with many tiles
builder.IsTiled = true;
builder.TileSize = new TiffSize(16, 16); // the minimum tile size
await GenerateImageAsync(ms, builder, _scratchSpace);
_tileTestTiff = ms.ToArray();
_stripReader = await TiffFileReader.OpenAsync(_stripTestTiff);
_stripDecoder = await _stripReader.CreateImageDecoderAsync();
await _stripDecoder.DecodeAsync(_scratchSpace);
_tileReader = await TiffFileReader.OpenAsync(_tileTestTiff);
_tileDecoder = await _tileReader.CreateImageDecoderAsync();
await _tileDecoder.DecodeAsync(_scratchSpace);
}
public void TestWriteColumns()
{
ITiffPixelBuffer <TiffGray8> pixelBuffer = PixelBufferTests.InitializePixelBuffer(out TiffGray8[] pixels);
var writer = new TiffPixelBufferWriterAdapter <TiffGray8>(pixelBuffer);
// Write to first column
using (TiffPixelSpanHandle <TiffGray8> pixelSpanHandle = writer.GetColumnSpan(0, 0, 1))
{
Assert.Equal(1, pixelSpanHandle.Length);
Span <TiffGray8> span = pixelSpanHandle.GetSpan();
Assert.Equal(1, span.Length);
span[0] = new TiffGray8(0xb1);
}
// Make sure only the affected pixels are changed while others stay the same.
Assert.Equal(0xb1, pixels[0].Intensity);
Assert.Equal(0x12, pixels[1].Intensity);
Assert.Equal(0x13, pixels[2].Intensity);
Assert.Equal(0x21, pixels[3].Intensity);
Assert.Equal(0x22, pixels[4].Intensity);
Assert.Equal(0x23, pixels[5].Intensity);
// Write to second column
using (TiffPixelSpanHandle <TiffGray8> pixelSpanHandle = writer.GetColumnSpan(1, 1, 1))
{
Assert.Equal(1, pixelSpanHandle.Length);
Span <TiffGray8> span = pixelSpanHandle.GetSpan();
Assert.Equal(1, span.Length);
span[0] = new TiffGray8(0xb2);
}
// Make sure only the affected pixels are changed while others stay the same.
Assert.Equal(0xb1, pixels[0].Intensity);
Assert.Equal(0x12, pixels[1].Intensity);
Assert.Equal(0x13, pixels[2].Intensity);
Assert.Equal(0x21, pixels[3].Intensity);
Assert.Equal(0xb2, pixels[4].Intensity);
Assert.Equal(0x23, pixels[5].Intensity);
// Write to third column
using (TiffPixelSpanHandle <TiffGray8> pixelSpanHandle = writer.GetColumnSpan(2, 0, 2))
{
Assert.Equal(2, pixelSpanHandle.Length);
Span <TiffGray8> span = pixelSpanHandle.GetSpan();
Assert.Equal(2, span.Length);
span[0] = new TiffGray8(0xb3);
span[1] = new TiffGray8(0xb4);
}
// Make sure only the affected pixels are changed while others stay the same.
Assert.Equal(0xb1, pixels[0].Intensity);
Assert.Equal(0x12, pixels[1].Intensity);
Assert.Equal(0xb3, pixels[2].Intensity);
Assert.Equal(0x21, pixels[3].Intensity);
Assert.Equal(0xb2, pixels[4].Intensity);
Assert.Equal(0xb4, pixels[5].Intensity);
// Failure cases
Assert.Throws <ArgumentOutOfRangeException>("colIndex", () => writer.GetColumnSpan(-1, 1, 1));
Assert.Throws <ArgumentOutOfRangeException>("colIndex", () => writer.GetColumnSpan(3, 1, 1));
Assert.Throws <ArgumentOutOfRangeException>("start", () => writer.GetColumnSpan(0, -1, 1));
Assert.Throws <ArgumentOutOfRangeException>("start", () => writer.GetColumnSpan(0, 3, 1));
Assert.Throws <ArgumentOutOfRangeException>("length", () => writer.GetColumnSpan(0, 1, -1));
Assert.Throws <ArgumentOutOfRangeException>("length", () => writer.GetColumnSpan(0, 1, 2));
}
