/// <summary>
/// Creates the quantized frame.
/// </summary>
/// <typeparam name="TPixel">The type of the pixel.</typeparam>
/// <param name="options">The options.</param>
/// <param name="image">The image.</param>
public static IndexedImageFrame <TPixel> CreateQuantizedFrame <TPixel>(
PngEncoderOptions options,
Image <TPixel> image)
where TPixel : unmanaged, IPixel <TPixel>
{
if (options.ColorType != PngColorType.Palette)
{
return(null);
}
// Use the metadata to determine what quantization depth to use if no quantizer has been set.
if (options.Quantizer is null)
{
byte bits = (byte)options.BitDepth;
var maxColors = ColorNumerics.GetColorCountForBitDepth(bits);
options.Quantizer = new WuQuantizer(new QuantizerOptions {
MaxColors = maxColors
});
}
// Create quantized frame returning the palette and set the bit depth.
using (IQuantizer <TPixel> frameQuantizer = options.Quantizer.CreatePixelSpecificQuantizer <TPixel>(image.GetConfiguration()))
{
ImageFrame <TPixel> frame = image.Frames.RootFrame;
return(frameQuantizer.BuildPaletteAndQuantizeFrame(frame, frame.Bounds()));
}
}
/// <summary>
/// Initializes a new instance of the <see cref="GifEncoderCore"/> class.
/// </summary>
/// <param name="memoryAllocator">The <see cref="MemoryAllocator"/> to use for buffer allocations.</param>
/// <param name="options">The options for the encoder.</param>
public GifEncoderCore(MemoryAllocator memoryAllocator, IGifEncoderOptions options)
{
this.memoryAllocator = memoryAllocator;
this.textEncoding = options.TextEncoding ?? GifConstants.DefaultEncoding;
this.quantizer = options.Quantizer;
this.colorTableMode = options.ColorTableMode;
}
public void OctreeQuantizerCanCreateFrameQuantizer()
{
var quantizer = new OctreeQuantizer();
IQuantizer <Rgba32> frameQuantizer = quantizer.CreatePixelSpecificQuantizer <Rgba32>(Configuration.Default);
Assert.NotNull(frameQuantizer);
Assert.NotNull(frameQuantizer.Options);
Assert.Equal(QuantizerConstants.DefaultDither, frameQuantizer.Options.Dither);
frameQuantizer.Dispose();
quantizer = new OctreeQuantizer(new QuantizerOptions {
Dither = null
});
frameQuantizer = quantizer.CreatePixelSpecificQuantizer <Rgba32>(Configuration.Default);
Assert.NotNull(frameQuantizer);
Assert.Null(frameQuantizer.Options.Dither);
frameQuantizer.Dispose();
quantizer = new OctreeQuantizer(new QuantizerOptions {
Dither = KnownDitherings.Atkinson
});
frameQuantizer = quantizer.CreatePixelSpecificQuantizer <Rgba32>(Configuration.Default);
Assert.NotNull(frameQuantizer);
Assert.Equal(KnownDitherings.Atkinson, frameQuantizer.Options.Dither);
frameQuantizer.Dispose();
}
/// <summary>
/// Initializes a new instance of the <see cref="GifEncoderCore"/> class.
/// </summary>
/// <param name="memoryManager">The <see cref="MemoryManager"/> to use for buffer allocations.</param>
/// <param name="options">The options for the encoder.</param>
public GifEncoderCore(MemoryManager memoryManager, IGifEncoderOptions options)
{
this.memoryManager = memoryManager;
this.textEncoding = options.TextEncoding ?? GifConstants.DefaultEncoding;
this.quantizer = options.Quantizer;
this.ignoreMetadata = options.IgnoreMetadata;
}
public void Init()
{
var config = TestHelper.GetFakeConfig().Object;
_extractor = new MorphologyExtractor(config);
_quantizer = new MorphologyQuantizer(config);
}
/// <summary>
/// Initializes a new instance of the <see cref="BmpEncoderCore"/> class.
/// </summary>
/// <param name="options">The encoder options.</param>
/// <param name="memoryAllocator">The memory manager.</param>
public BmpEncoderCore(IBmpEncoderOptions options, MemoryAllocator memoryAllocator)
{
this.memoryAllocator = memoryAllocator;
this.bitsPerPixel = options.BitsPerPixel;
this.writeV4Header = options.SupportTransparency;
this.quantizer = options.Quantizer ?? KnownQuantizers.Octree;
}
/// <summary>
/// Initializes a new instance of the <see cref="BmpEncoderCore"/> class.
/// </summary>
/// <param name="options">The encoder options.</param>
/// <param name="memoryAllocator">The memory manager.</param>
public BmpEncoderCore(IBmpEncoderOptions options, MemoryAllocator memoryAllocator)
{
this.memoryAllocator = memoryAllocator;
this.bitsPerPixel = options.BitsPerPixel;
this.writeV4Header = options.SupportTransparency;
this.quantizer = options.Quantizer ?? new OctreeQuantizer(dither: true, maxColors: 256);
}
public void Init()
{
_matcher = new MorphologyMatcher();
_boardExtractor = new BoardExtractor(_matcher);
_quantizer = new MorphologyQuantizer(TestHelper.GetFakeConfig().Object);
_initialBoard = TestHelper.BuildBoard(new[]
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
0, 0, 1, 1, 1, 1, 1, 1, 0, 0,
0, 0, 1, 1, 1, 1, 1, 1, 0, 0,
0, 1, 1, 1, 0, 1, 1, 1, 1, 1,
1, 1, 1, 1, 0, 1, 1, 1, 1, 1
});
}
/// <summary>
/// Initializes a new instance of the <see cref="GifEncoderCore"/> class.
/// </summary>
/// <param name="configuration">The configuration which allows altering default behaviour or extending the library.</param>
/// <param name="options">The options for the encoder.</param>
public GifEncoderCore(Configuration configuration, IGifEncoderOptions options)
{
this.configuration = configuration;
this.memoryAllocator = configuration.MemoryAllocator;
this.quantizer = options.Quantizer;
this.colorTableMode = options.ColorTableMode;
}
public TiffPaletteWriter(
ImageFrame <TPixel> image,
IQuantizer quantizer,
MemoryAllocator memoryAllocator,
Configuration configuration,
TiffEncoderEntriesCollector entriesCollector,
int bitsPerPixel)
: base(image, memoryAllocator, configuration, entriesCollector)
{
DebugGuard.NotNull(quantizer, nameof(quantizer));
DebugGuard.NotNull(configuration, nameof(configuration));
DebugGuard.NotNull(entriesCollector, nameof(entriesCollector));
DebugGuard.MustBeBetweenOrEqualTo(bitsPerPixel, 4, 8, nameof(bitsPerPixel));
this.BitsPerPixel = bitsPerPixel;
this.maxColors = this.BitsPerPixel == 4 ? 16 : 256;
this.colorPaletteSize = this.maxColors * 3;
this.colorPaletteBytes = this.colorPaletteSize * 2;
using IQuantizer <TPixel> frameQuantizer = quantizer.CreatePixelSpecificQuantizer <TPixel>(this.Configuration, new QuantizerOptions()
{
MaxColors = this.maxColors
});
this.quantizedImage = frameQuantizer.BuildPaletteAndQuantizeFrame(image, image.Bounds());
this.AddColorMapTag();
}
public void QuantizersDitherByDefault()
{
var werner = new WernerPaletteQuantizer();
var webSafe = new WebSafePaletteQuantizer();
var octree = new OctreeQuantizer();
var wu = new WuQuantizer();
Assert.NotNull(werner.Options.Dither);
Assert.NotNull(webSafe.Options.Dither);
Assert.NotNull(octree.Options.Dither);
Assert.NotNull(wu.Options.Dither);
using (IQuantizer <Rgba32> quantizer = werner.CreatePixelSpecificQuantizer <Rgba32>(this.Configuration))
{
Assert.NotNull(quantizer.Options.Dither);
}
using (IQuantizer <Rgba32> quantizer = webSafe.CreatePixelSpecificQuantizer <Rgba32>(this.Configuration))
{
Assert.NotNull(quantizer.Options.Dither);
}
using (IQuantizer <Rgba32> quantizer = octree.CreatePixelSpecificQuantizer <Rgba32>(this.Configuration))
{
Assert.NotNull(quantizer.Options.Dither);
}
using (IQuantizer <Rgba32> quantizer = wu.CreatePixelSpecificQuantizer <Rgba32>(this.Configuration))
{
Assert.NotNull(quantizer.Options.Dither);
}
}
/// <summary>
/// Applies quantization to the image.
/// </summary>
/// <typeparam name="TColor">The pixel format.</typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="quantizer">The quantizer to apply to perform the operation.</param>
/// <param name="maxColors">The maximum number of colors to return.</param>
/// <returns>The <see cref="Image{TColor}"/>.</returns>
public static Image <TColor> Quantize <TColor>(this Image <TColor> source, IQuantizer <TColor> quantizer, int maxColors)
where TColor : struct, IPackedPixel, IEquatable <TColor>
{
QuantizedImage <TColor> quantized = quantizer.Quantize(source, maxColors);
int palleteCount = quantized.Palette.Length - 1;
using (PixelAccessor <TColor> pixels = new PixelAccessor <TColor>(quantized.Width, quantized.Height))
{
Parallel.For(
0,
pixels.Height,
source.Configuration.ParallelOptions,
y =>
{
for (int x = 0; x < pixels.Width; x++)
{
int i = x + (y * pixels.Width);
TColor color = quantized.Palette[Math.Min(palleteCount, quantized.Pixels[i])];
pixels[x, y] = color;
}
});
source.SwapPixelsBuffers(pixels);
return(source);
}
}
private static void TestBmpEncoderCore <TPixel>(
TestImageProvider <TPixel> provider,
BmpBitsPerPixel bitsPerPixel,
bool supportTransparency = true, // if set to true, will write a V4 header, otherwise a V3 header.
IQuantizer quantizer = null,
ImageComparer customComparer = null)
where TPixel : unmanaged, IPixel <TPixel>
{
using (Image <TPixel> image = provider.GetImage())
{
// There is no alpha in bmp with less then 32 bits per pixels, so the reference image will be made opaque.
if (bitsPerPixel != BmpBitsPerPixel.Pixel32)
{
image.Mutate(c => c.MakeOpaque());
}
var encoder = new BmpEncoder
{
BitsPerPixel = bitsPerPixel,
SupportTransparency = supportTransparency,
Quantizer = quantizer ?? KnownQuantizers.Octree
};
// Does DebugSave & load reference CompareToReferenceInput():
image.VerifyEncoder(provider, "bmp", bitsPerPixel, encoder, customComparer);
}
}
internal void PerformDraw(IQuantizer quantizer, IDitherer ditherer)
{
if (quantizer == null)
{
PerformDrawDirect();
return;
}
IReadableBitmapData initSource = SourceRectangle.Size == Source.GetSize()
? Source
: Source.Clip(SourceRectangle);
try
{
Debug.Assert(!quantizer.InitializeReliesOnContent || !Source.HasMultiLevelAlpha(), "This draw performs blending on-the-fly but the used quantizer would require two-pass processing");
context.Progress?.New(DrawingOperation.InitializingQuantizer);
using (IQuantizingSession quantizingSession = quantizer.Initialize(initSource, context))
{
if (context.IsCancellationRequested)
{
return;
}
if (quantizingSession == null)
{
throw new InvalidOperationException(Res.ImagingQuantizerInitializeNull);
}
// quantizing without dithering
if (ditherer == null)
{
PerformDrawWithQuantizer(quantizingSession);
return;
}
// quantizing with dithering
Debug.Assert(!ditherer.InitializeReliesOnContent || !Source.HasMultiLevelAlpha(), "This draw performs blending on-the-fly but the used ditherer would require two-pass processing");
context.Progress?.New(DrawingOperation.InitializingDitherer);
using IDitheringSession ditheringSession = ditherer.Initialize(initSource, quantizingSession, context);
if (context.IsCancellationRequested)
{
return;
}
if (ditheringSession == null)
{
throw new InvalidOperationException(Res.ImagingDithererInitializeNull);
}
PerformDrawWithDithering(quantizingSession, ditheringSession);
}
}
finally
{
if (!ReferenceEquals(initSource, Source))
{
initSource.Dispose();
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="GifEncoderCore"/> class.
/// </summary>
/// <param name="configuration">The configuration which allows altering default behaviour or extending the library.</param>
/// <param name="options">The options for the encoder.</param>
public GifEncoderCore(Configuration configuration, IGifEncoderOptions options)
{
this.configuration = configuration;
this.memoryAllocator = configuration.MemoryAllocator;
this.quantizer = options.Quantizer;
this.colorTableMode = options.ColorTableMode;
this.pixelSamplingStrategy = options.GlobalPixelSamplingStrategy;
}
/// <summary>
/// Initializes a new instance of the <see cref="QuantizeProcessor{TPixel}"/> class.
/// </summary>
/// <param name="quantizer">The quantizer used to reduce the color palette</param>
/// <param name="maxColors">The maximum number of colors to reduce the palette to</param>
public QuantizeProcessor(IQuantizer <TPixel> quantizer, int maxColors)
{
Guard.NotNull(quantizer, nameof(quantizer));
Guard.MustBeGreaterThan(maxColors, 0, nameof(maxColors));
this.Quantizer = quantizer;
this.MaxColors = maxColors;
}
/// <summary>
/// Initializes a new instance of the <see cref="FrameQuantizerBase{TPixel}"/> class.
/// </summary>
/// <param name="quantizer">The quantizer</param>
/// <param name="singlePass">
/// If true, the quantization process only needs to loop through the source pixels once
/// </param>
/// <remarks>
/// If you construct this class with a <value>true</value> for <paramref name="singlePass"/>, then the code will
/// only call the <see cref="SecondPass(ImageFrame{TPixel}, Span{byte}, ReadOnlySpan{TPixel}, int, int)"/> method.
/// If two passes are required, the code will also call <see cref="FirstPass(ImageFrame{TPixel}, int, int)"/>.
/// </remarks>
protected FrameQuantizerBase(IQuantizer quantizer, bool singlePass)
{
Guard.NotNull(quantizer, nameof(quantizer));
this.Diffuser = quantizer.Diffuser;
this.Dither = this.Diffuser != null;
this.singlePass = singlePass;
}
/// <summary>
/// Encodes the image to the specified stream from the <see cref="Image{TColor, TPacked}"/>.
/// </summary>
/// <typeparam name="TColor">The pixel format.</typeparam>
/// <typeparam name="TPacked">The packed format. <example>uint, long, float.</example></typeparam>
/// <param name="image">The <see cref="Image{TColor, TPacked}"/> to encode from.</param>
/// <param name="stream">The <see cref="Stream"/> to encode the image data to.</param>
public void Encode <TColor, TPacked>(Image <TColor, TPacked> image, Stream stream)
where TColor : struct, IPackedPixel <TPacked>
where TPacked : struct
{
Guard.NotNull(image, nameof(image));
Guard.NotNull(stream, nameof(stream));
if (this.Quantizer == null)
{
this.Quantizer = new OctreeQuantizer <TColor, TPacked>();
}
// Do not use IDisposable pattern here as we want to preserve the stream.
EndianBinaryWriter writer = new EndianBinaryWriter(EndianBitConverter.Little, stream);
// Ensure that quality can be set but has a fallback.
int quality = this.Quality > 0 ? this.Quality : image.Quality;
this.Quality = quality > 0 ? quality.Clamp(1, 256) : 256;
// Get the number of bits.
this.bitDepth = ImageMaths.GetBitsNeededForColorDepth(this.Quality);
// Quantize the image returning a palette.
QuantizedImage <TColor, TPacked> quantized = ((IQuantizer <TColor, TPacked>) this.Quantizer).Quantize(image, this.Quality);
int index = GetTransparentIndex(quantized);
// Write the header.
this.WriteHeader(writer);
// Write the LSD. We'll use local color tables for now.
this.WriteLogicalScreenDescriptor(image, writer, index);
// Write the first frame.
this.WriteGraphicalControlExtension(image, writer, index);
this.WriteImageDescriptor(image, writer);
this.WriteColorTable(quantized, writer);
this.WriteImageData(quantized, writer);
// Write additional frames.
if (image.Frames.Any())
{
this.WriteApplicationExtension(writer, image.RepeatCount, image.Frames.Count);
foreach (ImageFrame <TColor, TPacked> frame in image.Frames)
{
QuantizedImage <TColor, TPacked> quantizedFrame = ((IQuantizer <TColor, TPacked>) this.Quantizer).Quantize(frame, this.Quality);
this.WriteGraphicalControlExtension(frame, writer, GetTransparentIndex(quantizedFrame));
this.WriteImageDescriptor(frame, writer);
this.WriteColorTable(quantizedFrame, writer);
this.WriteImageData(quantizedFrame, writer);
}
}
// TODO: Write Comments extension etc
writer.Write(GifConstants.EndIntroducer);
}
/// <summary>
/// Encodes the image to the specified stream from the <see cref="Image{TPixel}"/>.
/// </summary>
/// <typeparam name="TPixel">The pixel format.</typeparam>
/// <param name="image">The <see cref="Image{TPixel}"/> to encode from.</param>
/// <param name="stream">The <see cref="Stream"/> to encode the image data to.</param>
public void Encode <TPixel>(Image <TPixel> image, Stream stream)
where TPixel : struct, IPixel <TPixel>
{
Guard.NotNull(image, nameof(image));
Guard.NotNull(stream, nameof(stream));
this.Quantizer = this.options.Quantizer ?? new OctreeQuantizer <TPixel>();
// Do not use IDisposable pattern here as we want to preserve the stream.
EndianBinaryWriter writer = new EndianBinaryWriter(Endianness.LittleEndian, stream);
// Ensure that quality can be set but has a fallback.
int quality = this.options.Quality > 0 ? this.options.Quality : image.MetaData.Quality;
quality = quality > 0 ? quality.Clamp(1, 256) : 256;
// Get the number of bits.
this.bitDepth = ImageMaths.GetBitsNeededForColorDepth(quality);
// Quantize the image returning a palette.
QuantizedImage <TPixel> quantized = ((IQuantizer <TPixel>) this.Quantizer).Quantize(image, quality);
int index = this.GetTransparentIndex(quantized);
// Write the header.
this.WriteHeader(writer);
// Write the LSD. We'll use local color tables for now.
this.WriteLogicalScreenDescriptor(image, writer, index);
// Write the first frame.
this.WriteGraphicalControlExtension(image, writer, index);
this.WriteComments(image, writer);
this.WriteImageDescriptor(image, writer);
this.WriteColorTable(quantized, writer);
this.WriteImageData(quantized, writer);
// Write additional frames.
if (image.Frames.Any())
{
this.WriteApplicationExtension(writer, image.MetaData.RepeatCount, image.Frames.Count);
// ReSharper disable once ForCanBeConvertedToForeach
for (int i = 0; i < image.Frames.Count; i++)
{
ImageFrame <TPixel> frame = image.Frames[i];
QuantizedImage <TPixel> quantizedFrame = ((IQuantizer <TPixel>) this.Quantizer).Quantize(frame, quality);
this.WriteGraphicalControlExtension(frame, writer, this.GetTransparentIndex(quantizedFrame));
this.WriteImageDescriptor(frame, writer);
this.WriteColorTable(quantizedFrame, writer);
this.WriteImageData(quantizedFrame, writer);
}
}
// TODO: Write extension etc
writer.Write(GifConstants.EndIntroducer);
}
public void Encode(ImageBase imageBase, Stream stream)
{
if (imageBase == null || stream == null)
{
throw new ArgumentNullException();
}
Image2 image = (Image2)imageBase;
if (Quantizer == null)
{
Quantizer = new OctreeQuantizer {
Threshold = Threshold
};
}
// Do not use IDisposable pattern here as we want to preserve the stream.
EndianBinaryWriter writer = new EndianBinaryWriter(EndianBitConverter.Little, stream);
// Ensure that quality can be set but has a fallback.
int quality = Quality > 0 ? Quality : imageBase.Quality;
Quality = quality > 0 ? NumUtils.Clamp(quality, 1, 256) : 256;
// Get the number of bits.
bitDepth = GetBitsNeededForColorDepth(Quality);
// Quantize the image returning a palette.
QuantizedImage quantized = Quantizer.Quantize(image, Quality);
// Write the header.
WriteHeader(writer);
// Write the LSD. We'll use local color tables for now.
WriteLogicalScreenDescriptor(image, writer, quantized.TransparentIndex);
// Write the first frame.
WriteGraphicalControlExtension(imageBase, writer, quantized.TransparentIndex);
WriteImageDescriptor(image, writer);
WriteColorTable(quantized, writer);
WriteImageData(quantized, writer);
// Write additional frames.
if (image.Frames.Any())
{
WriteApplicationExtension(writer, image.RepeatCount, image.Frames.Count);
foreach (ImageFrame frame in image.Frames)
{
QuantizedImage quantizedFrame = Quantizer.Quantize(frame, Quality);
WriteGraphicalControlExtension(frame, writer, quantizedFrame.TransparentIndex);
WriteImageDescriptor(frame, writer);
WriteColorTable(quantizedFrame, writer);
WriteImageData(quantizedFrame, writer);
}
}
// TODO: Write Comments extension etc
writer.Write(GifConstants.endIntroducer);
}
/// <summary>
/// Initializes a new instance of the <see cref="FrameQuantizer{TPixel}"/> class.
/// </summary>
/// <param name="configuration">The configuration which allows altering default behaviour or extending the library.</param>
/// <param name="quantizer">The quantizer</param>
/// <param name="singlePass">
/// If true, the quantization process only needs to loop through the source pixels once
/// </param>
/// <remarks>
/// If you construct this class with a <value>true</value> for <paramref name="singlePass"/>, then the code will
/// only call the <see cref="SecondPass(ImageFrame{TPixel}, Span{byte}, ReadOnlySpan{TPixel}, int, int)"/> method.
/// If two passes are required, the code will also call <see cref="FirstPass(ImageFrame{TPixel}, int, int)"/>.
/// </remarks>
protected FrameQuantizer(Configuration configuration, IQuantizer quantizer, bool singlePass)
{
Guard.NotNull(quantizer, nameof(quantizer));
this.Configuration = configuration;
this.Diffuser = quantizer.Diffuser;
this.Dither = this.Diffuser != null;
this.singlePass = singlePass;
}
protected BaseEngine(ICamera camera, IClock clock, IExecutor executor, IQuantizer quantizer, IAgent agent)
{
Camera = camera;
Clock = clock;
Executor = executor;
Quantizer = quantizer;
Agent = agent;
}
/// <summary>
/// Applies quantization to the image.
/// </summary>
/// <typeparam name="T">The pixel format.</typeparam>
/// <typeparam name="TP">The packed format. <example>long, float.</example></typeparam>
/// <param name="source">The image this method extends.</param>
/// <param name="quantizer">The quantizer to apply to perform the operation.</param>
/// <param name="maxColors">The maximum number of colors to return.</param>
/// <returns>The <see cref="Image{T,TP}"/>.</returns>
public static Image <T, TP> Quantize <T, TP>(this Image <T, TP> source, IQuantizer <T, TP> quantizer, int maxColors)
where T : IPackedVector <TP>
where TP : struct
{
QuantizedImage <T, TP> quantizedImage = quantizer.Quantize(source, maxColors);
source.SetPixels(source.Width, source.Height, quantizedImage.ToImage().Pixels);
return(source);
}
/// <summary>
/// Initializes a new instance of the <see cref="GifEncoderCore"/> class.
/// </summary>
/// <param name="options">The options for the encoder.</param>
public GifEncoderCore(IGifEncoderOptions options)
{
this.textEncoding = options.TextEncoding ?? GifConstants.DefaultEncoding;
this.quantizer = options.Quantizer;
this.threshold = options.Threshold;
this.paletteSize = options.PaletteSize;
this.ignoreMetadata = options.IgnoreMetadata;
}
/// <summary>
/// Initializes a new instance of the <see cref="PngEncoderCore"/> class.
/// </summary>
/// <param name="memoryManager">The <see cref="MemoryManager"/> to use for buffer allocations.</param>
/// <param name="options">The options for influencing the encoder</param>
public PngEncoderCore(MemoryManager memoryManager, IPngEncoderOptions options)
{
this.memoryManager = memoryManager;
this.pngColorType = options.PngColorType;
this.compressionLevel = options.CompressionLevel;
this.gamma = options.Gamma;
this.quantizer = options.Quantizer;
this.threshold = options.Threshold;
this.writeGamma = options.WriteGamma;
}
/// <summary>
/// Initializes a new instance of the <see cref="PngEncoderCore"/> class.
/// </summary>
/// <param name="memoryAllocator">The <see cref="MemoryAllocator"/> to use for buffer allocations.</param>
/// <param name="options">The options for influencing the encoder</param>
public PngEncoderCore(MemoryAllocator memoryAllocator, IPngEncoderOptions options)
{
this.memoryAllocator = memoryAllocator;
this.pngBitDepth = options.BitDepth;
this.pngColorType = options.ColorType;
this.pngFilterMethod = options.FilterMethod;
this.compressionLevel = options.CompressionLevel;
this.gamma = options.Gamma;
this.quantizer = options.Quantizer;
this.threshold = options.Threshold;
}
/// <summary>
/// Initializes a new instance of the <see cref="PngEncoderCore"/> class.
/// </summary>
/// <param name="options">The options for influencing the encoder</param>
public PngEncoderCore(IPngEncoderOptions options)
{
this.ignoreMetadata = options.IgnoreMetadata;
this.paletteSize = options.PaletteSize > 0 ? options.PaletteSize.Clamp(1, int.MaxValue) : int.MaxValue;
this.pngColorType = options.PngColorType;
this.compressionLevel = options.CompressionLevel;
this.gamma = options.Gamma;
this.quantizer = options.Quantizer;
this.threshold = options.Threshold;
this.writeGamma = options.WriteGamma;
}
public void QuantizeImageShouldPreserveMaximumColorPrecision <TPixel>(TestImageProvider <TPixel> provider, string quantizerName)
where TPixel : struct, IPixel <TPixel>
{
provider.Configuration.MemoryManager = ArrayPoolMemoryManager.CreateWithModeratePooling();
IQuantizer quantizer = GetQuantizer(quantizerName);
using (Image <TPixel> image = provider.GetImage())
{
image.Mutate(c => c.Quantize(quantizer));
image.DebugSave(provider, new PngEncoder()
{
PngColorType = PngColorType.Palette
}, testOutputDetails: quantizerName);
}
provider.Configuration.MemoryManager.ReleaseRetainedResources();
//string path = TestEnvironment.CreateOutputDirectory("Quantize");
//foreach (TestFile file in Files)
//{
// using (Image<Rgba32> srcImage = Image.Load<Rgba32>(file.Bytes, out IImageFormat mimeType))
// {
// using (Image<Rgba32> image = srcImage.Clone())
// {
// using (FileStream output = File.OpenWrite($"{path}/Octree-{file.FileName}"))
// {
// image.Mutate(x => x.Quantize(KnownQuantizers.Octree));
// image.Save(output, mimeType);
// }
// }
// using (Image<Rgba32> image = srcImage.Clone())
// {
// using (FileStream output = File.OpenWrite($"{path}/Wu-{file.FileName}"))
// {
// image.Mutate(x => x.Quantize(KnownQuantizers.Wu));
// image.Save(output, mimeType);
// }
// }
// using (Image<Rgba32> image = srcImage.Clone())
// {
// using (FileStream output = File.OpenWrite($"{path}/Palette-{file.FileName}"))
// {
// image.Mutate(x => x.Quantize(KnownQuantizers.Palette));
// image.Save(output, mimeType);
// }
// }
// }
//}
}
public void SaveAsIconTest(PixelFormat pixelFormat)
{
var ms = new MemoryStream();
IQuantizer quantizer = pixelFormat.IsIndexed() ? OptimizedPaletteQuantizer.Octree(1 << pixelFormat.ToBitsPerPixel()) : null;
var refImage = Convert(Icons.Information.ExtractBitmap(new Size(64, 64)), pixelFormat, quantizer);
refImage.SaveAsIcon(ms);
ms.Position = 0;
var bmp = new Bitmap(ms);
Assert.AreEqual(ImageFormat.Icon, bmp.RawFormat);
Assert.AreEqual(PixelFormat.Format32bppArgb, bmp.PixelFormat);
SaveImage($"{pixelFormat}", bmp, true);
}
public void SaveAsTiffTest(PixelFormat pixelFormat, PixelFormat savedFormat, PixelFormat?savedFormatLinux = null)
{
var ms = new MemoryStream();
IQuantizer quantizer = pixelFormat.IsIndexed() ? OptimizedPaletteQuantizer.Octree(1 << pixelFormat.ToBitsPerPixel(), Color.Silver, 0) : null;
var refImage = Convert(Icons.Information.ExtractBitmap(new Size(256, 256)), pixelFormat, quantizer);
refImage.SaveAsTiff(ms);
ms.Position = 0;
var bmp = new Bitmap(ms);
Assert.AreEqual(ImageFormat.Tiff, bmp.RawFormat);
Assert.AreEqual(OSUtils.IsWindows ? savedFormat : savedFormatLinux ?? savedFormat, bmp.PixelFormat);
SaveImage($"{pixelFormat}", bmp, true);
}
public static Image2 Quantize(this Image2 source, IQuantizer quantizer, int maxColors)
{
QuantizedImage quantizedImage = quantizer.Quantize(source, maxColors);
source.SetPixels(source.Width, source.Height, quantizedImage.ToImage().Pixels);
return source;
}