private static async Task <ImageData> RunFileTestAsync(string imageFileName, bool deleteFile, bool runTest)
{
if (imageFileName is null)
{
throw new ArgumentNullException(nameof(imageFileName));
}
if (imageFileName.Length == 0)
{
throw new ArgumentException("path must not be empty string", nameof(imageFileName));
}
var myPictures = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
var cacheFileName = Path.Combine(myPictures, imageFileName);
var cacheFile = new FileInfo(cacheFileName);
if (deleteFile && cacheFile.Exists)
{
cacheFile.Delete();
}
var cache = new CachingStrategy
{
new FileCacheLayer(cacheFile.Directory)
};
var imageRequest = new ImageRequest(
new Uri("https://www.seanmcbeth.com"),
"2015-05.min.jpg");
var imageDecoder = new JpegFactory(80).Pipe(new JpegCodec());
var actual = await cache
.LoadAsync(imageDecoder, imageRequest)
.ConfigureAwait(false);
if (runTest)
{
var path = Path.Combine(myPictures, "portrait-expected.jpg");
using var stream = FileDataSource.Instance.GetStream(path);
var expected = imageDecoder.Deserialize(stream);
var expectedData = expected.GetData();
var actualData = actual.GetData();
Assert.AreEqual(expected.Info.Dimensions.Width, actual.Info.Dimensions.Width);
Assert.AreEqual(expected.Info.Dimensions.Height, actual.Info.Dimensions.Height);
Assert.AreEqual(expectedData.Length, actualData.Length);
for (var i = 0; i < expectedData.Length; ++i)
{
Assert.AreEqual(expectedData[i], actualData[i]);
}
}
return(actual);
}
public static void Main()
{
var desktopPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
var desktopDirectory = new DirectoryInfo(desktopPath);
var imageFile = desktopDirectory
.GetFiles("*.jpg")
.First(f => f.Name.StartsWith("test", StringComparison.OrdinalIgnoreCase));
using var imageStream = imageFile.OpenRead();
var codec = new JpegFactory()
.Pipe(new JpegCodec());
var image = codec.Deserialize(imageStream);
var spaces = new ColorSpace[]
{
ColorSpace.HSI,
ColorSpace.HSL,
ColorSpace.HSV,
ColorSpace.RGB,
ColorSpace.YCH_Adobe,
ColorSpace.YCH_HDR,
ColorSpace.YCH_SDTV,
ColorSpace.YCH_sRGB
};
for (var s = 0; s < spaces.Length; ++s)
{
var images = new[]
{
Resize(image, 0, 0, 3, spaces[s]),
Resize(image, 1, 0, 3, spaces[s]),
Resize(image, 0, 1, 3, spaces[s]),
Resize(image, 1, 1, 3, spaces[s])
};
for (var i = 0; i < images.Length; ++i)
{
var index = (s * images.Length) + i + 1;
var path = Path.Combine(desktopDirectory.FullName, $"test ({index}).jpg");
codec.Serialize(path, images[i]);
}
}
}
