/// <summary>
/// Reads an image from the specified stream using the specified image load options.
/// </summary>
/// <param name="stream">
/// The stream containing the image.
/// </param>
/// <param name="options">
/// The image load options.
/// </param>
/// <returns>
/// A task representing the image pipeline read operation.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="stream" /> or <paramref name="options" /> is null.
/// </exception>
public static async Task<ImagePipeline> FromStreamAsync(Stream stream, ImageLoadOptions options) {
Guard.NotNull(stream, nameof(stream));
Guard.NotNull(options, nameof(options));
await using var ms = GlobalStatics.RecyclableMemoryStreamManager.GetStream();
await stream.CopyToAsync(ms);
return FromBuffer(ms.ToArray(), options);
}
/// <summary>
/// Reads an image from the specified buffer using the specified image load options.
/// </summary>
/// <param name="buffer">
/// The buffer containing the image.
/// </param>
/// <param name="options">
/// The image load options.
/// </param>
/// <returns>
/// An image pipeline.
/// </returns>
/// <exception cref="ArgumentException">
/// Thrown if <paramref name="buffer" /> is empty.
/// </exception>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="buffer" /> or <paramref name="options" /> is null.
/// </exception>
public static ImagePipeline FromBuffer(byte[] buffer, ImageLoadOptions options) {
Guard.NotNull(buffer, nameof(buffer));
Guard.NotNull(options, nameof(options));
return new ImagePipeline(new BufferImageSource(buffer, options));
}
/// <summary>
/// Reads an image from the specified URI with the specified image load options.
/// </summary>
/// <param name="uri">
/// The URI to the image.
/// </param>
/// <param name="options">
/// The image load options.
/// </param>
/// <returns>
/// A task representing the image pipeline read operation.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="uri" /> or <paramref name="options" /> is null.
/// </exception>
public static async Task<ImagePipeline> FromUriAsync(Uri uri, ImageLoadOptions options) {
Guard.NotNull(uri, nameof(uri));
Guard.NotNull(options, nameof(options));
using var httpClient = new HttpClient(); // being super lazy
return new ImagePipeline(new BufferImageSource(await httpClient.GetByteArrayAsync(uri).ForAwait(), options));
}
/// <summary>
/// Reads an image from the specified URI string with the specified image load options.
/// </summary>
/// <param name="uri">
/// The URI to the image.
/// </param>
/// <param name="options">
/// The image load options.
/// </param>
/// <returns>
/// A task representing the image pipeline read operation.
/// </returns>
/// <exception cref="ArgumentException">
/// Thrown if <paramref name="uri" /> is empty or contains only whitespace.
/// </exception>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="uri" /> or <paramref name="options" /> is null.
/// </exception>
public static Task<ImagePipeline> FromUriAsync(string uri, ImageLoadOptions options) {
Guard.NotNullOrWhiteSpace(uri, nameof(uri));
Guard.NotNull(options, nameof(options));
return FromUriAsync(new Uri(uri), new ImageLoadOptions());
}
/// <summary>
/// Reads an image from the specified vips image with the specified image load options.
/// </summary>
/// <param name="image">
/// The vips image.
/// </param>
/// <param name="options">
/// The image load options.
/// </param>
/// <returns>
/// An image pipeline.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="image" /> or <paramref name="options" /> is null.
/// </exception>
public static ImagePipeline FromImage(Image image, ImageLoadOptions options) {
Guard.NotNull(image, nameof(image));
Guard.NotNull(options, nameof(options));
return new ImagePipeline(new VipsImageSource(image, options));
}
/// <summary>
/// Reads an image from the specified path using the specified image load options.
/// </summary>
/// <param name="path">
/// The path to the image.
/// </param>
/// <param name="options">
/// The image load options.
/// </param>
/// <returns>
/// A task representing the image pipeline read operation.
/// </returns>
/// <exception cref="ArgumentException">
/// Thrown if <paramref name="path" /> is empty or contains only whitespace.
/// </exception>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="path" /> or <paramref name="options" /> is null.
/// </exception>
/// <exception cref="FileNotFoundException">
/// Thrown if <paramref name="path" /> is not found.
/// </exception>
public static async Task<ImagePipeline> FromFileAsync(string path, ImageLoadOptions options) {
Guard.NotNullOrWhiteSpace(path, nameof(path));
Guard.NotNull(options, nameof(options));
return FromBuffer(await File.ReadAllBytesAsync(path).ForAwait(), options);
}
/// <summary>
/// Reads an image from the specified path using the specified image load options.
/// </summary>
/// <param name="path">
/// The path to the image.
/// </param>
/// <param name="options">
/// The image load options.
/// </param>
/// <returns>
/// An image pipeline.
/// </returns>
/// <exception cref="ArgumentException">
/// Thrown if <paramref name="path" /> is empty or contains only whitespace.
/// </exception>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="path" /> or <paramref name="options" /> is null.
/// </exception>
/// <exception cref="FileNotFoundException">
/// Thrown if <paramref name="path" /> is not found.
/// </exception>
public static ImagePipeline FromFile(string path, ImageLoadOptions options) {
Guard.FileExists(path, nameof(path));
Guard.NotNull(options, nameof(options));
return FromBuffer(File.ReadAllBytes(path), options);
}
