private Task EncodeImageAsync <TPixel>(ImageFrame <TPixel> image, TiffImageFileDirectoryWriter ifdWriter, CancellationToken cancellationToken) where TPixel : unmanaged, IPixel <TPixel>
{
ITiffEncoderOptions options = _options;
var builder = new TiffImageEncoderBuilder();
builder.MemoryPool = _memoryPool;
builder.PhotometricInterpretation = options.PhotometricInterpretation;
builder.Compression = options.Compression;
builder.IsTiled = options.IsTiled;
builder.RowsPerStrip = options.RowsPerStrip;
builder.TileSize = new TiffSize(options.TileSize.Width, options.TileSize.Height);
builder.Predictor = options.Predictor;
builder.EnableTransparencyForRgb = options.EnableTransparencyForRgb;
builder.Orientation = options.Orientation;
builder.DeflateCompressionLevel = options.DeflateCompressionLevel;
builder.JpegOptions = new TiffJpegEncodingOptions {
Quality = options.JpegQuality, OptimizeCoding = options.JpegOptimizeCoding
};
builder.HorizontalChromaSubSampling = options.HorizontalChromaSubSampling;
builder.VerticalChromaSubSampling = options.VerticalChromaSubSampling;
TiffImageEncoder <TPixel> encoder = builder.BuildForImageSharp <TPixel>();
return(encoder.EncodeAsync(ifdWriter, image, cancellationToken));
}
private async Task EncodeCoreAsync <TPixel>(Image <TPixel> image, Stream stream, bool isAsync, CancellationToken cancellationToken) where TPixel : unmanaged, IPixel <TPixel>
{
TiffFileWriter writer;
if (isAsync)
{
writer = await TiffFileWriter.OpenAsync(stream, leaveOpen : true, cancellationToken : cancellationToken).ConfigureAwait(false);
}
else
{
writer = await TiffFileWriter.OpenAsync(new ImageSharpContentReaderWriter(stream), leaveOpen : true, cancellationToken : cancellationToken).ConfigureAwait(false);
}
try
{
using (TiffImageFileDirectoryWriter ifdWriter = writer.CreateImageFileDirectory())
{
await EncodeImageAsync(image.Frames.RootFrame, ifdWriter, cancellationToken).ConfigureAwait(false);
writer.SetFirstImageFileDirectoryOffset(await ifdWriter.FlushAsync(cancellationToken).ConfigureAwait(false));
}
await writer.FlushAsync(cancellationToken).ConfigureAwait(false);
}
finally
{
await writer.DisposeAsync().ConfigureAwait(false);
}
}
public async Task EncodeTileImage()
{
await using TiffFileWriter writer = await TiffFileWriter.OpenAsync(new EmptyContentReaderWriter (), false, false);
using (TiffImageFileDirectoryWriter ifdWriter = writer.CreateImageFileDirectory())
{
await _tileEncoder.EncodeAsync(ifdWriter, _image);
writer.SetFirstImageFileDirectoryOffset(await ifdWriter.FlushAsync());
}
await writer.FlushAsync();
}
public static async Task <int> Merge(FileInfo[] source, FileInfo output, CancellationToken cancellationToken)
{
if (source is null || source.Length == 0)
{
Console.WriteLine("Input TIFF file are not specified.");
return(1);
}
if (output is null)
{
Console.WriteLine("Output TIFF file is not specified");
return(1);
}
await using TiffFileWriter writer = await TiffFileWriter.OpenAsync(output.FullName);
TiffStreamOffset fistIfdOffset = default;
TiffStreamOffset previousIfdOffset = default;
foreach (FileInfo sourceFile in source)
{
await using TiffFileReader reader = await TiffFileReader.OpenAsync(sourceFile.FullName);
await using TiffFileContentReader contentReader = await reader.CreateContentReaderAsync();
await using TiffFieldReader fieldReader = await reader.CreateFieldReaderAsync(cancellationToken);
TiffStreamOffset inputIfdOffset = reader.FirstImageFileDirectoryOffset;
while (!inputIfdOffset.IsZero)
{
TiffImageFileDirectory ifd = await reader.ReadImageFileDirectoryAsync(inputIfdOffset, cancellationToken);
using (TiffImageFileDirectoryWriter ifdWriter = writer.CreateImageFileDirectory())
{
await CopyIfdAsync(contentReader, fieldReader, ifd, ifdWriter, cancellationToken);
previousIfdOffset = await ifdWriter.FlushAsync(previousIfdOffset);
if (fistIfdOffset.IsZero)
{
fistIfdOffset = previousIfdOffset;
}
}
inputIfdOffset = ifd.NextOffset;
}
}
writer.SetFirstImageFileDirectoryOffset(fistIfdOffset);
await writer.FlushAsync();
return(0);
}
private static async Task GenerateImageAsync(Stream stream, TiffImageEncoderBuilder builder, TiffPixelBuffer <TiffGray8> image)
{
using (TiffFileWriter writer = await TiffFileWriter.OpenAsync(stream, true))
{
TiffStreamOffset ifdOffset;
using (TiffImageFileDirectoryWriter ifdWriter = writer.CreateImageFileDirectory())
{
TiffImageEncoder <TiffGray8> encoder = builder.Build <TiffGray8>();
await encoder.EncodeAsync(ifdWriter, image);
ifdOffset = await ifdWriter.FlushAsync();
}
writer.SetFirstImageFileDirectoryOffset(ifdOffset);
await writer.FlushAsync();
}
}
private static async Task <Stream> GenerateTiffAsync(bool bigTiff, Func <TiffImageFileDirectoryWriter, Task> ifdAction)
{
var ms = new MemoryStream();
using (TiffFileWriter writer = await TiffFileWriter.OpenAsync(ms, leaveOpen: true, useBigTiff: bigTiff))
{
using (TiffImageFileDirectoryWriter ifd = writer.CreateImageFileDirectory())
{
await ifdAction(ifd);
writer.SetFirstImageFileDirectoryOffset(await ifd.FlushAsync());
}
await writer.FlushAsync();
}
ms.Seek(0, SeekOrigin.Begin);
return(ms);
}
public override Task EncodeAsync(TiffImageFileDirectoryWriter writer, TiffPoint offset, TiffSize size, ITiffPixelBufferReader <TExposedPixel> reader, CancellationToken cancellationToken = default)
{
if (writer is null)
{
throw new ArgumentNullException(nameof(writer));
}
if (reader is null)
{
throw new ArgumentNullException(nameof(reader));
}
if (typeof(TExposedPixel) == typeof(TIntermediate))
{
return(_encoder.EncodeAsync(writer, offset, size, new TiffPassthroughPixelBufferReader <TExposedPixel, TTiffPixel>(reader), cancellationToken));
}
return(_encoder.EncodeAsync(writer, offset, size, new ImageSharpConversionPixelBufferReader <TExposedPixel, TIntermediate, TTiffPixel>(reader), cancellationToken));
}
/// <inheritdoc />
public override async Task EncodeAsync(TiffImageFileDirectoryWriter writer, TiffPoint offset, TiffSize size, ITiffPixelBufferReader <TPixel> reader, CancellationToken cancellationToken)
{
if (writer is null)
{
throw new ArgumentNullException(nameof(writer));
}
if (reader is null)
{
throw new ArgumentNullException(nameof(reader));
}
if (_ifdEncoder is null)
{
throw new InvalidOperationException("Ifd encoder is not configured.");
}
TiffPixelBufferReader <TPixel> structReader = reader.AsPixelBufferReader();
size = new TiffSize(Math.Max(0, Math.Min(structReader.Width - offset.X, structReader.Width)), Math.Max(0, Math.Min(structReader.Height - offset.Y, structReader.Height)));
if (size.IsAreaEmpty)
{
throw new ArgumentOutOfRangeException(nameof(size), "The image size is zero.");
}
var context = new TiffDefaultImageEncoderContext <TPixel>
{
MemoryPool = _memoryPool ?? MemoryPool <byte> .Shared,
CancellationToken = cancellationToken,
FileWriter = writer.FileWriter,
IfdWriter = writer,
ImageSize = size,
PixelConverterFactory = TiffDefaultPixelConverterFactory.Instance,
PixelBufferReader = structReader
};
await _ifdEncoder.RunAsync(context).ConfigureAwait(false);
}
public static async Task <int> Wrap(FileInfo source, FileInfo output, CancellationToken cancellationToken)
{
if (source is null || !source.Exists)
{
Console.WriteLine(source is null ? "Input JPEG image is not specified." : "File not found: " + source.FullName);
return(1);
}
if (output is null)
{
Console.WriteLine("Output TIFF file is not specified.");
return(1);
}
byte[] jpegFile = await File.ReadAllBytesAsync(source.FullName, cancellationToken);
var decoder = new JpegDecoder();
decoder.SetInput(jpegFile);
decoder.Identify(loadQuantizationTables: false);
ushort[] bitsPerSample = new ushort[decoder.NumberOfComponents];
ushort bits = (ushort)decoder.Precision;
for (int i = 0; i < bitsPerSample.Length; i++)
{
bitsPerSample[i] = bits;
}
TiffPhotometricInterpretation photometricInterpretation =
bitsPerSample.Length == 1 ? TiffPhotometricInterpretation.BlackIsZero :
bitsPerSample.Length == 3 ? TiffPhotometricInterpretation.YCbCr :
throw new InvalidDataException("Photometric interpretation not supported.");
using (TiffFileWriter writer = await TiffFileWriter.OpenAsync(output.FullName, useBigTiff: false))
{
TiffStreamOffset imageOffset = await writer.WriteAlignedBytesAsync(jpegFile);
TiffStreamOffset ifdOffset;
using (TiffImageFileDirectoryWriter ifdWriter = writer.CreateImageFileDirectory())
{
await ifdWriter.WriteTagAsync(TiffTag.ImageWidth, TiffValueCollection.Single((ushort)decoder.Width));
await ifdWriter.WriteTagAsync(TiffTag.ImageLength, TiffValueCollection.Single((ushort)decoder.Height));
await ifdWriter.WriteTagAsync(TiffTag.BitsPerSample, TiffValueCollection.UnsafeWrap(bitsPerSample));
await ifdWriter.WriteTagAsync(TiffTag.Compression, TiffValueCollection.Single((ushort)TiffCompression.Jpeg));
await ifdWriter.WriteTagAsync(TiffTag.PhotometricInterpretation, TiffValueCollection.Single((ushort)photometricInterpretation));
await ifdWriter.WriteTagAsync(TiffTag.SamplesPerPixel, TiffValueCollection.Single((ushort)bitsPerSample.Length));
await ifdWriter.WriteTagAsync(TiffTag.PlanarConfiguration, TiffValueCollection.Single((ushort)TiffPlanarConfiguration.Chunky));
await ifdWriter.WriteTagAsync(TiffTag.RowsPerStrip, TiffValueCollection.Single((ushort)decoder.Height));
await ifdWriter.WriteTagAsync(TiffTag.StripOffsets, TiffValueCollection.Single((uint)imageOffset.Offset));
await ifdWriter.WriteTagAsync(TiffTag.StripByteCounts, TiffValueCollection.Single((uint)jpegFile.Length));
if (photometricInterpretation == TiffPhotometricInterpretation.YCbCr)
{
int maxHorizontalSampling = decoder.GetMaximumHorizontalSampling();
int maxVerticalSampling = decoder.GetMaximumVerticalSampling();
int yHorizontalSubSampling = maxHorizontalSampling / decoder.GetHorizontalSampling(0);
int yVerticalSubSampling = maxVerticalSampling / decoder.GetVerticalSampling(0);
int cbHorizontalSubSampling = maxHorizontalSampling / decoder.GetHorizontalSampling(1) / yHorizontalSubSampling;
int cbVerticalSubSampling = maxVerticalSampling / decoder.GetVerticalSampling(1) / yVerticalSubSampling;
int crHorizontalSubSampling = maxHorizontalSampling / decoder.GetHorizontalSampling(2) / yHorizontalSubSampling;
int crVerticalSubSampling = maxVerticalSampling / decoder.GetVerticalSampling(2) / yVerticalSubSampling;
if (cbHorizontalSubSampling != crHorizontalSubSampling || cbVerticalSubSampling != crVerticalSubSampling)
{
throw new InvalidDataException("Unsupported JPEG image.");
}
await ifdWriter.WriteTagAsync(TiffTag.YCbCrSubSampling, TiffValueCollection.UnsafeWrap(new ushort[] { (ushort)cbHorizontalSubSampling, (ushort)cbVerticalSubSampling }));
}
// Write other properties here (eg, XResolution, YResolution)
await ifdWriter.WriteTagAsync(TiffTag.XResolution, TiffValueCollection.Single(new TiffRational(96, 1)));
await ifdWriter.WriteTagAsync(TiffTag.YResolution, TiffValueCollection.Single(new TiffRational(96, 1)));
await ifdWriter.WriteTagAsync(TiffTag.ResolutionUnit, TiffValueCollection.Single((ushort)TiffResolutionUnit.Inch));
ifdOffset = await ifdWriter.FlushAsync();
}
writer.SetFirstImageFileDirectoryOffset(ifdOffset);
await writer.FlushAsync();
}
return(0);
}
private static async Task CopyStrippedImageAsync(TiffFileContentReader contentReader, TiffTagReader tagReader, TiffImageFileDirectoryWriter dest, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
TiffValueCollection <ulong> offsets = await tagReader.ReadStripOffsetsAsync(cancellationToken);
TiffValueCollection <ulong> byteCounts = await tagReader.ReadStripByteCountsAsync(cancellationToken);
if (offsets.Count != byteCounts.Count)
{
throw new InvalidDataException("Failed to copy stripped image data. StripOffsets and StripByteCounts don't have the same amount of elements.");
}
uint[] offsets32 = new uint[offsets.Count];
uint[] byteCounts32 = new uint[offsets.Count];
byte[]? buffer = null;
try
{
for (int i = 0; i < offsets.Count; i++)
{
int offset = checked ((int)offsets[i]);
int byteCount = checked ((int)byteCounts[i]);
byteCounts32[i] = checked ((uint)byteCount);
if (buffer is null || byteCount > buffer.Length)
{
if (!(buffer is null))
{
ArrayPool <byte> .Shared.Return(buffer);
}
buffer = ArrayPool <byte> .Shared.Rent(byteCount);
}
if (await contentReader.ReadAsync(offset, new ArraySegment <byte>(buffer, 0, byteCount), cancellationToken) != byteCount)
{
throw new InvalidDataException("Invalid ByteCount field.");
}
TiffStreamOffset region = await dest.FileWriter.WriteAlignedBytesAsync(buffer, 0, byteCount);
offsets32[i] = checked ((uint)region.Offset);
}
}
finally
{
if (!(buffer is null))
{
ArrayPool <byte> .Shared.Return(buffer);
}
}
await dest.WriteTagAsync(TiffTag.StripOffsets, TiffValueCollection.UnsafeWrap(offsets32));
await dest.WriteTagAsync(TiffTag.StripByteCounts, TiffValueCollection.UnsafeWrap(byteCounts32));
}
private static async Task CopyIfdAsync(TiffFileContentReader contentReader, TiffFieldReader fieldReader, TiffImageFileDirectory ifd, TiffImageFileDirectoryWriter dest, CancellationToken cancellationToken)
{
var tagReader = new TiffTagReader(fieldReader, ifd);
foreach (TiffImageFileDirectoryEntry entry in ifd)
{
// Stripped image data
if (entry.Tag == TiffTag.StripOffsets)
{
await CopyStrippedImageAsync(contentReader, tagReader, dest, cancellationToken);
}
else if (entry.Tag == TiffTag.StripByteCounts)
{
// Ignore this
}
// Tiled image data
else if (entry.Tag == TiffTag.TileOffsets)
{
await CopyTiledImageAsync(contentReader, tagReader, dest, cancellationToken);
}
else if (entry.Tag == TiffTag.TileByteCounts)
{
// Ignore this
}
// Other fields
else
{
await CopyFieldValueAsync(fieldReader, entry, dest, cancellationToken);
}
}
}
private static async Task CopyFieldValueAsync(TiffFieldReader reader, TiffImageFileDirectoryEntry entry, TiffImageFileDirectoryWriter ifdWriter, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
switch (entry.Type)
{
case TiffFieldType.Byte:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadByteFieldAsync(entry));
break;
case TiffFieldType.ASCII:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadASCIIFieldAsync(entry));
break;
case TiffFieldType.Short:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadShortFieldAsync(entry));
break;
case TiffFieldType.Long:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadLongFieldAsync(entry));
break;
case TiffFieldType.Rational:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadRationalFieldAsync(entry));
break;
case TiffFieldType.SByte:
await ifdWriter.WriteTagAsync(entry.Tag, entry.Type, await reader.ReadByteFieldAsync(entry));
break;
case TiffFieldType.Undefined:
await ifdWriter.WriteTagAsync(entry.Tag, entry.Type, await reader.ReadByteFieldAsync(entry));
break;
case TiffFieldType.SShort:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadSShortFieldAsync(entry));
break;
case TiffFieldType.SLong:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadSLongFieldAsync(entry));
break;
case TiffFieldType.SRational:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadSRationalFieldAsync(entry));
break;
case TiffFieldType.Float:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadFloatFieldAsync(entry));
break;
case TiffFieldType.Double:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadDoubleFieldAsync(entry));
break;
case TiffFieldType.IFD:
throw new NotSupportedException("This IFD type is not supported yet.");
case TiffFieldType.Long8:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadLong8FieldAsync(entry));
break;
case TiffFieldType.SLong8:
await ifdWriter.WriteTagAsync(entry.Tag, await reader.ReadSLong8FieldAsync(entry));
break;
case TiffFieldType.IFD8:
throw new NotSupportedException("This IFD type is not supported yet.");
default:
throw new NotSupportedException($"Unsupported IFD field type: {entry.Type}.");
}
}
internal async Task <TiffStreamOffset> GenerateReducedResolutionLayerAsync(int layer, TiffStreamOffset ifdOffset, IRipperReducedResolutionGenerationReporter reporter, CancellationToken cancellationToken)
{
int outputTileSize = _options.OutputTileSize;
int outputTileSize2 = 2 * outputTileSize;
TiffImageFileDirectory ifd = await _fileReader.ReadImageFileDirectoryAsync(ifdOffset).ConfigureAwait(false);
TiffImageDecoder image = await _fileReader.CreateImageDecoderAsync(ifd);
int width = image.Width;
int height = image.Height;
int tiffRowCount = (width / 2 + outputTileSize - 1) / outputTileSize;
int tiffColCount = (height / 2 + outputTileSize - 1) / outputTileSize;
int index = 0;
ulong[] offsets = new ulong[tiffRowCount * tiffColCount];
ulong[] byteCounts = new ulong[tiffRowCount * tiffColCount];
ulong totalByteCount = 0;
reporter?.ReportStartReducedResolutionLayerGeneration(layer, offsets.Length, width / 2, height / 2);
using (Image <Rgb24> canvas2 = new Image <Rgb24>(_configuration, outputTileSize2, outputTileSize2))
{
for (int y = 0; y < height; y += outputTileSize2)
{
for (int x = 0; x < width; x += outputTileSize2)
{
cancellationToken.ThrowIfCancellationRequested();
MemoryMarshal.AsBytes(canvas2.GetPixelSpan()).Clear();
await image.DecodeAsync(new TiffPoint(x, y), canvas2).ConfigureAwait(false);
using (Image <Rgb24> tile24 = canvas2.Clone(ctx =>
{
ctx.Resize(outputTileSize, outputTileSize);
}))
{
cancellationToken.ThrowIfCancellationRequested();
TiffStreamRegion region = await _encoder.EncodeAsync(_fileWriter, tile24).ConfigureAwait(false);
offsets[index] = (ulong)region.Offset.Offset;
byteCounts[index] = (uint)region.Length;
totalByteCount += (uint)region.Length;
index++;
reporter?.ReportReducedResolutionLayerGenerationProgress(layer, index, offsets.Length);
}
}
}
}
cancellationToken.ThrowIfCancellationRequested();
using (TiffImageFileDirectoryWriter ifdWriter = _fileWriter.CreateImageFileDirectory())
{
await ifdWriter.WriteTagAsync(TiffTag.NewSubfileType, new TiffValueCollection <ushort>((ushort)TiffNewSubfileType.ReducedResolution)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.PhotometricInterpretation, new TiffValueCollection <ushort>((ushort)TiffPhotometricInterpretation.YCbCr)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.Compression, new TiffValueCollection <ushort>((ushort)TiffCompression.Jpeg)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.SamplesPerPixel, new TiffValueCollection <ushort>((ushort)3)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.TileWidth, new TiffValueCollection <ushort>((ushort)outputTileSize)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.TileLength, new TiffValueCollection <ushort>((ushort)outputTileSize)).ConfigureAwait(false);
//ifdWriter.AddTag(TiffTag.ResolutionUnit, (ushort)TiffResolutionUnit.Inch);
//await ifdWriter.WriteTagAsync(TiffTag.XResolution, new TiffValueCollection<TiffRational>(new TiffRational(72, 1)));
//await ifdWriter.WriteTagAsync(TiffTag.YResolution, new TiffValueCollection<TiffRational>(new TiffRational(72, 1)));
await ifdWriter.WriteTagAsync(TiffTag.SampleFormat, new TiffValueCollection <ushort>(new ushort[] { 1, 1, 1 })).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.BitsPerSample, new TiffValueCollection <ushort>(new ushort[] { 8, 8, 8 })).ConfigureAwait(false);
if (UseBigTiff)
{
await ifdWriter.WriteTagAsync(TiffTag.ImageWidth, new TiffValueCollection <ulong>((ulong)(width / 2))).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.ImageLength, new TiffValueCollection <ulong>((ulong)(height / 2))).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.TileOffsets, new TiffValueCollection <ulong>(offsets)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.TileByteCounts, new TiffValueCollection <ulong>(byteCounts)).ConfigureAwait(false);
}
else
{
await ifdWriter.WriteTagAsync(TiffTag.ImageWidth, new TiffValueCollection <uint>((uint)(width / 2))).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.ImageLength, new TiffValueCollection <uint>((uint)(height / 2))).ConfigureAwait(false);
uint[] tempArr = new uint[offsets.Length];
for (int i = 0; i < tempArr.Length; i++)
{
tempArr[i] = (uint)offsets[i];
}
await ifdWriter.WriteTagAsync(TiffTag.TileOffsets, new TiffValueCollection <uint>(tempArr)).ConfigureAwait(false);
for (int i = 0; i < tempArr.Length; i++)
{
tempArr[i] = (uint)byteCounts[i];
}
await ifdWriter.WriteTagAsync(TiffTag.TileByteCounts, new TiffValueCollection <uint>(tempArr)).ConfigureAwait(false);
}
string software = Software;
if (!string.IsNullOrEmpty(software))
{
await ifdWriter.WriteTagAsync(TiffTag.Software, new TiffValueCollection <string>(software));
}
ifdOffset = await ifdWriter.FlushAsync(ifdOffset).ConfigureAwait(false);
}
reporter?.ReportCompleteReducedResolutionLayerGeneration(layer, offsets.Length, (long)totalByteCount);
return(ifdOffset);
}
public async Task RipBaseLayerAsync(IRipperInitialLayerAcquisitionReporter reporter, CancellationToken cancellationToken)
{
int outputTileSize = _options.OutputTileSize;
int tiffRowCount = (ImageHeight + outputTileSize - 1) / outputTileSize;
int tiffColCount = (ImageWidth + outputTileSize - 1) / outputTileSize;
int index = 0;
ulong[] offsets = new ulong[tiffRowCount * tiffColCount];
ulong[] byteCounts = new ulong[tiffRowCount * tiffColCount];
ulong totalByteCount = 0;
reporter?.ReportStartInitialLayerAcquisition(offsets.Length);
using (var regionReader = new TileRegionReader(this))
using (Image <Rgb24> canvas = new Image <Rgb24>(_configuration, outputTileSize, outputTileSize))
{
for (int row = 0; row < tiffRowCount; row++)
{
int rowYOffset = row * outputTileSize;
for (int col = 0; col < tiffColCount; col++)
{
int colXOffset = col * outputTileSize;
MemoryMarshal.AsBytes(canvas.GetPixelSpan()).Clear();
await regionReader.FillRegionAsync(colXOffset, rowYOffset, canvas, cancellationToken).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
TiffStreamRegion region = await _encoder.EncodeAsync(_fileWriter, canvas).ConfigureAwait(false);
offsets[index] = (ulong)region.Offset.Offset;
byteCounts[index] = (uint)region.Length;
totalByteCount += (uint)region.Length;
index++;
reporter?.ReportInitialLayerAcquisitionProgress(index, offsets.Length);
}
}
}
cancellationToken.ThrowIfCancellationRequested();
TiffStreamOffset ifdOffset;
using (TiffImageFileDirectoryWriter ifdWriter = _fileWriter.CreateImageFileDirectory())
{
await ifdWriter.WriteTagAsync(TiffTag.PhotometricInterpretation, new TiffValueCollection <ushort>((ushort)TiffPhotometricInterpretation.YCbCr)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.Compression, new TiffValueCollection <ushort>((ushort)TiffCompression.Jpeg)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.SamplesPerPixel, new TiffValueCollection <ushort>((ushort)3)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.TileWidth, new TiffValueCollection <ushort>((ushort)outputTileSize)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.TileLength, new TiffValueCollection <ushort>((ushort)outputTileSize)).ConfigureAwait(false);
//ifdWriter.AddTag(TiffTag.ResolutionUnit, (ushort)TiffResolutionUnit.Inch);
//await ifdWriter.WriteTagAsync(TiffTag.XResolution, new TiffValueCollection<TiffRational>(new TiffRational(72, 1)));
//await ifdWriter.WriteTagAsync(TiffTag.YResolution, new TiffValueCollection<TiffRational>(new TiffRational(72, 1)));
await ifdWriter.WriteTagAsync(TiffTag.SampleFormat, new TiffValueCollection <ushort>(new ushort[] { 1, 1, 1 })).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.BitsPerSample, new TiffValueCollection <ushort>(new ushort[] { 8, 8, 8 })).ConfigureAwait(false);
if (UseBigTiff)
{
await ifdWriter.WriteTagAsync(TiffTag.ImageWidth, new TiffValueCollection <ulong>((ulong)_manifest.Width)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.ImageLength, new TiffValueCollection <ulong>((ulong)_manifest.Height)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.TileOffsets, new TiffValueCollection <ulong>(offsets)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.TileByteCounts, new TiffValueCollection <ulong>(byteCounts)).ConfigureAwait(false);
}
else
{
await ifdWriter.WriteTagAsync(TiffTag.ImageWidth, new TiffValueCollection <uint>((uint)_manifest.Width)).ConfigureAwait(false);
await ifdWriter.WriteTagAsync(TiffTag.ImageLength, new TiffValueCollection <uint>((uint)_manifest.Height)).ConfigureAwait(false);
uint[] tempArr = new uint[offsets.Length];
for (int i = 0; i < tempArr.Length; i++)
{
tempArr[i] = (uint)offsets[i];
}
await ifdWriter.WriteTagAsync(TiffTag.TileOffsets, new TiffValueCollection <uint>(tempArr)).ConfigureAwait(false);
for (int i = 0; i < tempArr.Length; i++)
{
tempArr[i] = (uint)byteCounts[i];
}
await ifdWriter.WriteTagAsync(TiffTag.TileByteCounts, new TiffValueCollection <uint>(tempArr)).ConfigureAwait(false);
}
string software = Software;
if (!string.IsNullOrEmpty(software))
{
await ifdWriter.WriteTagAsync(TiffTag.Software, new TiffValueCollection <string>(software));
}
ifdOffset = await ifdWriter.FlushAsync().ConfigureAwait(false);
}
_fileWriter.SetFirstImageFileDirectoryOffset(ifdOffset);
await _fileWriter.FlushAsync().ConfigureAwait(false);
reporter?.ReportCompleteInitialLayerAcquisition(offsets.Length, (long)totalByteCount);
}
