/// <summary>
/// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.
/// </summary>
/// <param name="fileName">The fully qualified name of the image file, or the relative image file name.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A new <see cref="IMagickImage{TQuantumType}"/> instance.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public async Task <IMagickImage <QuantumType> > CreateAsync(string fileName, IPixelReadSettings <QuantumType> settings, CancellationToken cancellationToken)
{
var image = new MagickImage();
await image.ReadPixelsAsync(fileName, settings, cancellationToken).ConfigureAwait(false);
return(image);
}
/// <summary>
/// Read single image frame from pixel data.
/// </summary>
/// <param name="stream">The stream to read the image data from.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public async Task ReadPixelsAsync(Stream stream, IPixelReadSettings <QuantumType>?settings, CancellationToken cancellationToken)
{
Throw.IfNullOrEmpty(nameof(stream), stream);
var bytes = await Bytes.CreateAsync(stream, cancellationToken).ConfigureAwait(false);
ReadPixels(bytes.GetData(), 0, bytes.Length, settings);
}
/// <summary>
/// Read single image frame from pixel data.
/// </summary>
/// <param name="fileName">The fully qualified name of the image file, or the relative image file name.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public async Task ReadPixelsAsync(string fileName, IPixelReadSettings <QuantumType>?settings, CancellationToken cancellationToken)
{
var filePath = FileHelper.CheckForBaseDirectory(fileName);
Throw.IfNullOrEmpty(nameof(fileName), filePath);
var data = await File.ReadAllBytesAsync(filePath, cancellationToken).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
ReadPixels(data, 0, data.Length, settings);
}
/// <summary>
/// Read single image frame.
/// </summary>
/// <param name="data">The span of quantum to read the image data from.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public void ReadPixels(ReadOnlySpan <QuantumType> data, IPixelReadSettings <QuantumType>?settings)
{
Throw.IfEmpty(nameof(data), data);
Throw.IfNull(nameof(settings), settings);
Throw.IfTrue(nameof(settings), string.IsNullOrEmpty(settings.Mapping), "Pixel storage mapping should be defined.");
Throw.IfTrue(nameof(settings), settings.StorageType != StorageType.Quantum, $"Storage type should be {nameof(StorageType.Quantum)}.");
var newReadSettings = CreateReadSettings(settings.ReadSettings);
SetSettings(newReadSettings);
var count = data.Length;
var expectedLength = GetExpectedLength(settings);
Throw.IfTrue(nameof(data), count < expectedLength, "The count is " + count + " but should be at least " + expectedLength + ".");
_nativeInstance.ReadPixels(settings.ReadSettings.Width !.Value, settings.ReadSettings.Height !.Value, settings.Mapping, settings.StorageType, data, 0);
}
/// <summary>
/// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.
/// </summary>
/// <param name="data">The byte array to read the image data from.</param>
/// <param name="offset">The offset at which to begin reading data.</param>
/// <param name="count">The maximum number of bytes to read.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <returns>A new <see cref="IMagickImage{TQuantumType}"/> instance.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public IMagickImage <QuantumType> Create(byte[] data, int offset, int count, IPixelReadSettings <QuantumType> settings)
=> new MagickImage(data, offset, count, settings);
/// <summary>
/// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.
/// </summary>
/// <param name="fileName">The fully qualified name of the image file, or the relative image file name.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <returns>A new <see cref="IMagickImage{TQuantumType}"/> instance.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public IMagickImage <QuantumType> Create(string fileName, IPixelReadSettings <QuantumType> settings)
=> new MagickImage(fileName, settings);
/// <summary>
/// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.
/// </summary>
/// <param name="stream">The stream to read the image data from.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <returns>A new <see cref="IMagickImage{TQuantumType}"/> instance.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public IMagickImage <QuantumType> Create(Stream stream, IPixelReadSettings <QuantumType> settings)
=> new MagickImage(stream, settings);
/// <summary>
/// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.
/// </summary>
/// <param name="file">The file to read the image from.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <returns>A new <see cref="IMagickImage{TQuantumType}"/> instance.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public IMagickImage <QuantumType> Create(FileInfo file, IPixelReadSettings <QuantumType> settings)
=> new MagickImage(file, settings);
/// <summary>
/// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.
/// </summary>
/// <param name="data">The byte array to read the image data from.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <returns>A new <see cref="IMagickImage{TQuantumType}"/> instance.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public IMagickImage <QuantumType> Create(byte[] data, IPixelReadSettings <QuantumType> settings)
=> new MagickImage(data, settings);
/// <summary>
/// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.
/// </summary>
/// <param name="data">The span of bytes to read the image data from.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <returns>A new <see cref="IMagickImage{TQuantumType}"/> instance.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public IMagickImage <QuantumType> Create(ReadOnlySpan <byte> data, IPixelReadSettings <QuantumType> settings)
=> new MagickImage(data, settings);
/// <summary>
/// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.
/// </summary>
/// <param name="fileName">The fully qualified name of the image file, or the relative image file name.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <returns>A new <see cref="IMagickImage{TQuantumType}"/> instance.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public Task <IMagickImage <QuantumType> > CreateAsync(string fileName, IPixelReadSettings <QuantumType> settings)
=> CreateAsync(fileName, settings, CancellationToken.None);
/// <summary> /// Read single image frame from pixel data. /// </summary> /// <param name="fileName">The fully qualified name of the image file, or the relative image file name.</param> /// <param name="settings">The pixel settings to use when reading the image.</param> /// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns> /// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception> public Task ReadPixelsAsync(string fileName, IPixelReadSettings <QuantumType>?settings) => ReadPixelsAsync(fileName, settings, CancellationToken.None);
/// <summary>
/// Read single image frame from pixel data.
/// </summary>
/// <param name="file">The file to read the image from.</param>
/// <param name="settings">The pixel settings to use when reading the image.</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
/// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception>
public Task ReadPixelsAsync(FileInfo file, IPixelReadSettings <QuantumType>?settings, CancellationToken cancellationToken)
{
Throw.IfNull(nameof(file), file);
return(ReadPixelsAsync(file.FullName, settings, cancellationToken));
}
/// <summary> /// Read single image frame from pixel data. /// </summary> /// <param name="stream">The stream to read the image data from.</param> /// <param name="settings">The pixel settings to use when reading the image.</param> /// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns> /// <exception cref="MagickException">Thrown when an error is raised by ImageMagick.</exception> public Task ReadPixelsAsync(Stream stream, IPixelReadSettings <QuantumType>?settings) => ReadPixelsAsync(stream, settings, CancellationToken.None);
