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ImageInput.cs
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115 lines (96 loc) · 3.34 KB
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// Copyright (c) TensorStack. All rights reserved.
// Licensed under the Apache 2.0 License.
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.PixelFormats;
using System.Threading;
using System.Threading.Tasks;
using TensorStack.Common.Tensor;
namespace TensorStack.Image
{
/// <summary>
/// ImageInput implementation with ImageSharp Image<Rgba32>.
/// </summary>
public class ImageInput : ImageInputBase
{
private readonly string _sourceFile;
private Image<Rgba32> _image;
/// <summary>
/// Initializes a new instance of the <see cref="ImageInput"/> class.
/// </summary>
/// <param name="tensor">The tensor.</param>
public ImageInput(ImageTensor tensor) : base(tensor)
{
_image = tensor.ToImageSharp();
}
/// <summary>
/// Initializes a new instance of the <see cref="ImageInput"/> class.
/// </summary>
/// <param name="image">The image.</param>
public ImageInput(Image<Rgba32> image)
: base(image.ToTensor())
{
_image = image;
}
/// <summary>
/// Initializes a new instance of the <see cref="ImageInput"/> class.
/// </summary>
/// <param name="filename">The filename.</param>
public ImageInput(string filename)
: this(Image<Rgba32>.Load<Rgba32>(filename))
{
_sourceFile = filename;
}
/// <summary>
/// Initializes a new instance of the <see cref="ImageInput"/> class.
/// </summary>
/// <param name="filename">The filename.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="resizeMode">The resize mode.</param>
public ImageInput(string filename, int width, int height, Common.ResizeMode resizeMode = Common.ResizeMode.Stretch) : this(Image<Rgba32>.Load<Rgba32>(filename))
{
Resize(width, height, resizeMode);
}
/// <summary>
/// Gets the image.
/// </summary>
public Image<Rgba32> Image => _image;
/// <summary>
/// Gets the source Image filename.
/// </summary>
public override string SourceFile => _sourceFile;
/// <summary>
/// Saves the specified image.
/// </summary>
public override void Save(string filename)
{
_image.SaveAsPng(filename);
}
/// <summary>
/// Save the Image to file
/// </summary>
/// <param name="filename">The filename.</param>
/// <param name="cancellationToken">The cancellation token</param>
public override async Task SaveAsync(string filename, CancellationToken cancellationToken = default)
{
await _image.SaveAsPngAsync(filename);
}
/// <summary>
/// Called when Tensor data has changed
/// </summary>
protected override void OnTensorDataChanged()
{
base.OnTensorDataChanged();
_image = this.ToImageSharp();
}
/// <summary>
/// Releases resources.
/// </summary>
protected override void Dispose(bool disposing)
{
_image?.Dispose();
_image = null;
base.Dispose(disposing);
}
}
}