Class WebpChunk

Namespace

Egami.Formats.Webp

Assembly

Egami.dll

A chunk Egami does not read itself, kept unchanged for round trips.

public sealed record WebpChunk : IEquatable<WebpChunk>

Inheritance

object

WebpChunk

Implements

IEquatable<WebpChunk>

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Examples

using Raster<Rgba8> image = Raster.Load<Rgba8>("duck.webp");
WebpDetails webp = (WebpDetails)image.Metadata.FormatDetails!;
Console.WriteLine($"{(webp.Lossless ? "lossless" : "lossy")}, extended: {webp.Extended}, alpha: {webp.HasAlpha}");

// Chunks Egami does not read are kept and written back where they were.
foreach (WebpChunk chunk in webp.OtherChunks)
{
    Console.WriteLine($"{chunk.Type}: {chunk.Data.Length} bytes, {chunk.Position}");
}

// An animation's frames say whether each was stored lossless.
foreach (Frame<Rgba8> frame in image.Frames)
{
    Console.WriteLine(frame.Metadata.FormatDetails is WebpFrameDetails { Lossless: true } ? "lossless frame" : "lossy frame");
}

Constructors

WebpChunk(string, ReadOnlyMemory<byte>, WebpChunkPosition)

A chunk Egami does not read itself, kept unchanged for round trips.

public WebpChunk(string Type, ReadOnlyMemory<byte> Data, WebpChunkPosition Position)

Parameters

Type string

The four-character chunk type, such as "TEST".

Data ReadOnlyMemory<byte>

The chunk data, without its padding byte.

Position WebpChunkPosition

Where the chunk sat.

Examples

using Raster<Rgba8> image = Raster.Load<Rgba8>("duck.webp");
WebpDetails webp = (WebpDetails)image.Metadata.FormatDetails!;
Console.WriteLine($"{(webp.Lossless ? "lossless" : "lossy")}, extended: {webp.Extended}, alpha: {webp.HasAlpha}");

// Chunks Egami does not read are kept and written back where they were.
foreach (WebpChunk chunk in webp.OtherChunks)
{
    Console.WriteLine($"{chunk.Type}: {chunk.Data.Length} bytes, {chunk.Position}");
}

// An animation's frames say whether each was stored lossless.
foreach (Frame<Rgba8> frame in image.Frames)
{
    Console.WriteLine(frame.Metadata.FormatDetails is WebpFrameDetails { Lossless: true } ? "lossless frame" : "lossy frame");
}

Properties

Data

The chunk data, without its padding byte.

public ReadOnlyMemory<byte> Data { get; init; }

Property Value

ReadOnlyMemory<byte>

Position

Where the chunk sat.

public WebpChunkPosition Position { get; init; }

Property Value

WebpChunkPosition

Type

The four-character chunk type, such as "TEST".

public string Type { get; init; }

Property Value

string