public void DuplicateStreamIsCollected()
{
VerifySupportsExceptionsInDelegates();
var handle = DoWork();
CollectGarbage();
Assert.False(SKObject.GetInstance <SKManagedStream>(handle, out _));
IntPtr DoWork()
{
var dotnet = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 });
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(1, stream.ReadByte());
Assert.Equal(2, stream.ReadByte());
var dupe1 = stream.Duplicate();
Assert.Equal(1, dupe1.ReadByte());
Assert.Equal(2, dupe1.ReadByte());
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
stream.Dispose();
var dupe2 = dupe1.Duplicate();
Assert.Equal(1, dupe2.ReadByte());
Assert.Equal(2, dupe2.ReadByte());
return(dupe2.Handle);
}
}
public unsafe void StreamLosesOwnershipAndCanBeDisposedButIsNotActually()
{
var path = Path.Combine(PathToImages, "color-wheel.png");
var bytes = File.ReadAllBytes(path);
var stream = new SKManagedStream(new MemoryStream(bytes), true);
var handle = stream.Handle;
Assert.True(stream.OwnsHandle);
Assert.False(stream.IgnorePublicDispose);
Assert.True(SKObject.GetInstance <SKManagedStream>(handle, out _));
var codec = SKCodec.Create(stream);
Assert.False(stream.OwnsHandle);
Assert.True(stream.IgnorePublicDispose);
stream.Dispose();
Assert.True(SKObject.GetInstance <SKManagedStream>(handle, out var inst));
Assert.Same(stream, inst);
Assert.Equal(SKCodecResult.Success, codec.GetPixels(out var pixels));
Assert.NotEmpty(pixels);
codec.Dispose();
Assert.False(SKObject.GetInstance <SKManagedStream>(handle, out _));
}
public void FullOwnershipIsTransferredToTheChildIfTheParentIsDisposed()
{
VerifySupportsExceptionsInDelegates();
var dotnet = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 });
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(1, stream.ReadByte());
Assert.Equal(2, stream.ReadByte());
var dupe1 = stream.Duplicate();
Assert.Equal(1, dupe1.ReadByte());
Assert.Equal(2, dupe1.ReadByte());
Assert.Throws <InvalidOperationException>(() => stream.Duplicate());
stream.Dispose();
var dupe2 = dupe1.Duplicate();
Assert.Equal(1, dupe2.ReadByte());
Assert.Equal(2, dupe2.ReadByte());
Assert.Throws <InvalidOperationException>(() => dupe1.Duplicate());
dupe1.Dispose();
dupe2.Dispose();
Assert.Throws <ObjectDisposedException>(() => dotnet.Position);
}
public void DotNetStreamIsNotCollected()
{
var dotnet = CreateTestStream();
var stream = new SKManagedStream(dotnet, false);
Assert.Equal(0, dotnet.Position);
stream.Dispose();
Assert.Equal(0, dotnet.Position);
}
public void DotNetStreamIsCollected()
{
var dotnet = CreateTestStream();
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(0, dotnet.Position);
stream.Dispose();
Assert.Throws <ObjectDisposedException>(() => dotnet.Position);
}
public void Dispose()
{
Font?.Dispose();
Font = null;
FontStream?.Dispose();
FontStream = null;
FontSource?.Dispose();
FontSource = null;
ImageBitmap?.Dispose();
ImageBitmap = null;
ImageData?.Dispose();
ImageData = null;
}
public void DotNetStreamIsNotClosedPrematurely()
{
var dotnet = CreateTestStream();
var stream = new SKManagedStream(dotnet, true);
Assert.Equal(0, stream.Position);
var dupe = stream.Duplicate();
Assert.Equal(0, dupe.Position);
stream.Dispose();
Assert.Equal(0, dupe.Position);
dupe.Dispose();
Assert.Throws <ObjectDisposedException>(() => dotnet.Position);
}
/// <summary>
/// Qrs the decoder.
/// </summary>
/// <param name="qrCodeFileStream">The qr code file stream.</param>
/// <returns>System.String.</returns>
/// <exception cref="System.Exception">未识别的图片文件</exception>
public static string QRDecoder(Stream qrCodeFileStream)
{
var sKManagedStream = new SKManagedStream(qrCodeFileStream, true);
var sKBitmap = SKBitmap.Decode(sKManagedStream);
sKManagedStream.Dispose();
if (sKBitmap.IsEmpty)
{
sKBitmap.Dispose();
throw new Exception("未识别的图片文件");
}
var w = sKBitmap.Width;
var h = sKBitmap.Height;
var ps = w * h;
var bytes = new byte[ps * 3];
var byteIndex = 0;
for (var x = 0; x < w; x++)
{
for (var y = 0; y < h; y++)
{
var color = sKBitmap.GetPixel(x, y);
bytes[byteIndex + 0] = color.Red;
bytes[byteIndex + 1] = color.Green;
bytes[byteIndex + 2] = color.Blue;
byteIndex += 3;
}
}
sKBitmap.Dispose();
var qRCodeReader = new QRCodeReader();
var rGbLuminanceSource = new RGBLuminanceSource(bytes, w, h);
var hybridBinarizer = new HybridBinarizer(rGbLuminanceSource);
var binaryBitmap = new BinaryBitmap(hybridBinarizer);
var hints = new Dictionary <DecodeHintType, object> {
{ DecodeHintType.CHARACTER_SET, "utf-8" }
};
var result = qRCodeReader.decode(binaryBitmap, hints);
return(result != null ? result.Text : "");
}
public unsafe void StreamLosesOwnershipToCodecButIsNotForgotten()
{
var bytes = File.ReadAllBytes(Path.Combine(PathToImages, "color-wheel.png"));
var dotnet = new MemoryStream(bytes);
var stream = new SKManagedStream(dotnet, true);
var handle = stream.Handle;
Assert.True(stream.OwnsHandle);
Assert.True(SKObject.GetInstance <SKManagedStream>(handle, out _));
var codec = SKCodec.Create(stream);
Assert.False(stream.OwnsHandle);
stream.Dispose();
Assert.True(SKObject.GetInstance <SKManagedStream>(handle, out _));
Assert.Equal(SKCodecResult.Success, codec.GetPixels(out var pixels));
Assert.NotEmpty(pixels);
}
public static Texture2D LoadImageAsTexture(string path)
{
SKBitmap bitmap;
try
{
FileStream imgStream = File.OpenRead(path);
SKManagedStream skManagedStream = new SKManagedStream(imgStream);
bitmap = SKBitmap.Decode(skManagedStream);
//Guarantee BGRA8888 to the loaded image
if (bitmap.ColorType != SKColorType.Bgra8888)
{
SKBitmap tempBitmap = new SKBitmap(bitmap.Width, bitmap.Height, false);
bitmap.CopyTo(tempBitmap, SKColorType.Bgra8888);
bitmap.Dispose();
bitmap = tempBitmap;
}
skManagedStream.Dispose();
imgStream.Close();
imgStream.Dispose();
}
catch (Exception ex)
{
Debug.LogErrorFormat("Could not load file: {0} with error: {1}", Path.GetFileNameWithoutExtension(path), ex.Message);
return(null);
}
if (bitmap == null) //It appears that Skia lib sometimes don't read the image but don't throw a exception.
{
Debug.LogErrorFormat("Could not load file: {0} the image cannot be opened.", Path.GetFileNameWithoutExtension(path));
return(null);
}
Texture2D texture;
ConvertSKBitmapToTexture2D(bitmap, out texture);
texture.name = Path.GetFileNameWithoutExtension(path);
return(texture);
}
/// <summary>
/// Gets the image information.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>Tuple<System.Int32, System.Int32, System.Int64, SkiaSharp.SKEncodedImageFormat>.</returns>
/// <exception cref="System.Exception">
/// 路径不能为空
/// or
/// 文件不存在
/// or
/// 文件过大
/// or
/// 文件无效
/// </exception>
public static Tuple <int, int, long, SKEncodedImageFormat> GetImageInfo(string path)
{
if (string.IsNullOrEmpty(path))
{
throw new Exception("路径不能为空");
}
if (!File.Exists(path))
{
throw new Exception("文件不存在");
}
var fileStream =
new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read); //fileInfo.OpenRead();
var fileLength = fileStream.Length;
if (fileLength > maxLength)
{
fileStream.Dispose();
throw new Exception("文件过大");
}
var sKManagedStream = new SKManagedStream(fileStream, true);
var sKBitmap = SKBitmap.Decode(sKManagedStream);
sKManagedStream.Dispose();
if (sKBitmap.IsEmpty)
{
sKBitmap.Dispose();
throw new Exception("文件无效");
}
var w = sKBitmap.Width;
var h = sKBitmap.Height;
return(new Tuple <int, int, long, SKEncodedImageFormat>(w, h, fileLength, GetImageFormatByPath(path)));
}
public bool ToThumnail(int w = 0, int h = 0)
{
var output_path = $@"{(new DirectoryInfo(original_file).Parent.Parent.FullName)}\{ImagePath.Thumbs}\";
if (!Directory.Exists(output_path))
{
Directory.CreateDirectory(output_path);
}
using (var input = File.OpenRead(original_file))
{
using (var inputStream = new SKManagedStream(input))
{
using (var original = SKBitmap.Decode(inputStream))
{
int width, height;
if (w > 0 || h > 0)
{
width = w > 0 ? w : size;
height = h > 0 ? h : original.Height * width / original.Width;
}
else
{
if (original.Width <= size || input.ReadByte() < 2_025)
{
original.Dispose();
inputStream.Dispose();
input.Dispose();
System.IO.File.Move(original_file, $@"{output_path}\{Path.GetFileName(original_file)}");
return(true);
}
if (original.Width > original.Height)
{
width = size;
height = original.Height * size / original.Width;
}
else
{
width = original.Width * size / original.Height;
height = size;
}
}
using (var resized = original.Resize(new SKImageInfo(width, height), SKFilterQuality.High))
{
if (resized == null)
{
return(false);
}
using (var image = SKImage.FromBitmap(resized))
{
using (var output = File.OpenWrite($@"{output_path}\{Path.GetFileName(original_file)}"))
{
image.Encode(SKEncodedImageFormat.Png, quality).SaveTo(output);
}
}
}
}
}
}
return(true);
}
/// <summary>
/// Images the scaling by oversized.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="maxWidth">The maximum width.</param>
/// <param name="maxHeight">The maximum height.</param>
/// <param name="quality">The quality.</param>
/// <returns>System.Byte[].</returns>
public static byte[] ImageScalingByOversized(string path, int maxWidth, int maxHeight, int quality)
{
byte[] bytes = null;
if (!File.Exists(path))
{
return(bytes);
}
var fileStream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
if (fileStream.Length > maxLength)
{
fileStream.Dispose();
return(bytes);
}
var sKManagedStream = new SKManagedStream(fileStream, true);
var sKBitmap = SKBitmap.Decode(sKManagedStream);
sKManagedStream.Dispose();
if (sKBitmap.IsEmpty)
{
return(bytes);
}
if (maxWidth < 1)
{
maxWidth = 1;
}
if (maxHeight < 1)
{
maxHeight = 1;
}
if (quality < 1)
{
quality = 1;
}
if (quality > 100)
{
quality = 100;
}
var oW = sKBitmap.Width;
var oH = sKBitmap.Height;
var nW = oW;
var nH = oH;
if (oW > maxWidth || oH > maxHeight)
{
nW = maxWidth;
nH = maxHeight;
double ratio = 1;
if (nW > 0 && nH > 0)
{
ratio = (double)nW / oW;
nH = Convert.ToInt32(oH * ratio);
if (maxHeight < nH)
{
ratio = (double)maxHeight / nH;
nW = Convert.ToInt32(nW * ratio);
nH = maxHeight;
}
}
if (nW < 1 && nH < 1)
{
nW = oW;
nH = oH;
}
if (nW < 1)
{
ratio = (double)nH / oH;
nW = Convert.ToInt32(oW * ratio);
}
if (nH < 1)
{
ratio = (double)nW / oW;
nH = Convert.ToInt32(oH * ratio);
}
var sKBitmap2 = new SKBitmap(nW, nH);
var sKCanvas = new SKCanvas(sKBitmap2);
var sKPaint = new SKPaint
{
FilterQuality = SKFilterQuality.Medium,
IsAntialias = true
};
sKCanvas.DrawBitmap(
sKBitmap,
new SKRect
{
Location = new SKPoint {
X = 0, Y = 0
},
Size = new SKSize {
Height = oH, Width = oW
}
},
new SKRect
{
Location = new SKPoint {
X = 0, Y = 0
},
Size = new SKSize {
Height = nH, Width = nW
}
}, sKPaint);
sKCanvas.Dispose();
sKBitmap.Dispose();
sKBitmap = sKBitmap2;
}
var sKImage = SKImage.FromBitmap(sKBitmap);
sKBitmap.Dispose();
var data = sKImage.Encode(GetImageFormatByPath(path), quality);
sKImage.Dispose();
bytes = data.ToArray();
data.Dispose();
return(bytes);
}
/// <summary>
/// Images the scaling to range.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="maxWidth">The maximum width.</param>
/// <param name="maxHeight">The maximum height.</param>
/// <param name="quality">The quality.</param>
/// <returns>System.Byte[].</returns>
public static byte[] ImageScalingToRange(string path, int maxWidth, int maxHeight, int quality)
{
byte[] bytes = null;
if (!File.Exists(path))
{
return(bytes);
}
var fileStream =
new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read); //fileInfo.OpenRead();
if (fileStream.Length > maxLength)
{
fileStream.Dispose();
return(bytes);
}
var sKManagedStream = new SKManagedStream(fileStream, true);
var sKBitmap = SKBitmap.Decode(sKManagedStream);
sKManagedStream.Dispose();
if (sKBitmap.IsEmpty)
{
return(bytes);
}
if (maxWidth < 1)
{
maxWidth = 1;
}
if (maxHeight < 1)
{
maxHeight = 1;
}
if (quality < 1)
{
quality = 1;
}
if (quality > 100)
{
quality = 100;
}
var oW = sKBitmap.Width;
var oH = sKBitmap.Height;
var nW = oW;
var nH = oH;
if (nW < maxWidth && nH < maxHeight) //放大
{
if (nW < maxWidth)
{
var r = maxWidth / (double)nW;
nW = maxWidth;
nH = (int)Math.Floor(nH * r);
}
if (nH < maxHeight)
{
var r = maxHeight / (double)nH;
nH = maxHeight;
nW = (int)Math.Floor(nW * r);
}
}
//限制超出(缩小)
if (nW > maxWidth)
{
var r = maxWidth / (double)nW;
nW = maxWidth;
nH = (int)Math.Floor(nH * r);
}
if (nH > maxHeight)
{
var r = maxHeight / (double)nH;
nH = maxHeight;
nW = (int)Math.Floor(nW * r);
}
var sKBitmap2 = new SKBitmap(nW, nH);
var sKCanvas = new SKCanvas(sKBitmap2);
var sKPaint = new SKPaint
{
FilterQuality = SKFilterQuality.Medium,
IsAntialias = true
};
sKCanvas.DrawBitmap(
sKBitmap,
new SKRect
{
Location = new SKPoint {
X = 0, Y = 0
},
Size = new SKSize {
Height = oH, Width = oW
}
},
new SKRect
{
Location = new SKPoint {
X = 0, Y = 0
},
Size = new SKSize {
Height = nH, Width = nW
}
}, sKPaint);
sKCanvas.Dispose();
var sKImage2 = SKImage.FromBitmap(sKBitmap2);
sKBitmap2.Dispose();
var data = sKImage2.Encode(GetImageFormatByPath(path), quality);
sKImage2.Dispose();
bytes = data.ToArray();
data.Dispose();
return(bytes);
}
/// <summary>
/// Images the maximum cut by center.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="saveWidth">Width of the save.</param>
/// <param name="saveHeight">Height of the save.</param>
/// <param name="quality">The quality.</param>
/// <returns>System.Byte[].</returns>
public static byte[] ImageMaxCutByCenter(string path, int saveWidth, int saveHeight, int quality)
{
byte[] bytes = null;
if (!File.Exists(path))
{
return(bytes);
}
var fileStream =
new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read); //fileInfo.OpenRead();
if (fileStream.Length > maxLength)
{
fileStream.Dispose();
return(bytes);
}
var sKManagedStream = new SKManagedStream(fileStream, true);
var sKBitmap = SKBitmap.Decode(sKManagedStream);
sKManagedStream.Dispose();
if (sKBitmap.IsEmpty)
{
return(bytes);
}
if (saveWidth < 1)
{
saveWidth = 1;
}
if (saveHeight < 1)
{
saveHeight = 1;
}
if (quality < 1)
{
quality = 1;
}
if (quality > 100)
{
quality = 100;
}
var oW = sKBitmap.Width;
var oH = sKBitmap.Height;
var cutW = saveWidth;
var cutH = saveHeight;
double ratio = 1;
if (cutW > oW)
{
ratio = oW / (double)cutW;
cutH = Convert.ToInt32(cutH * ratio);
cutW = oW;
if (cutH > oH)
{
ratio = oH / (double)cutH;
cutW = Convert.ToInt32(cutW * ratio);
cutH = oH;
}
}
else if (cutW < oW)
{
ratio = oW / (double)cutW;
cutH = Convert.ToInt32(Convert.ToDouble(cutH) * ratio);
cutW = oW;
if (cutH > oH)
{
ratio = oH / (double)cutH;
cutW = Convert.ToInt32(cutW * ratio);
cutH = oH;
}
}
else
{
if (cutH > oH)
{
ratio = oH / (double)cutH;
cutW = Convert.ToInt32(cutW * ratio);
cutH = oH;
}
}
var startX = oW > cutW ? oW / 2 - cutW / 2 : cutW / 2 - oW / 2;
var startY = oH > cutH ? oH / 2 - cutH / 2 : cutH / 2 - oH / 2;
var sKBitmap2 = new SKBitmap(saveWidth, saveHeight);
var sKCanvas = new SKCanvas(sKBitmap2);
var sKPaint = new SKPaint
{
FilterQuality = SKFilterQuality.Medium,
IsAntialias = true
};
sKCanvas.DrawBitmap(
sKBitmap,
new SKRect
{
Location = new SKPoint {
X = startX, Y = startY
},
Size = new SKSize {
Height = cutH, Width = cutW
}
},
new SKRect
{
Location = new SKPoint {
X = 0, Y = 0
},
Size = new SKSize {
Height = saveHeight, Width = saveWidth
}
}, sKPaint);
sKCanvas.Dispose();
var sKImage2 = SKImage.FromBitmap(sKBitmap2);
sKBitmap2.Dispose();
var data = sKImage2.Encode(GetImageFormatByPath(path), quality);
sKImage2.Dispose();
bytes = data.ToArray();
data.Dispose();
return(bytes);
}
