internal static SKBitmap Decode(string path, bool forceCleanBitmap, IFileSystem fileSystem, ImageOrientation?orientation, out SKCodecOrigin origin)
{
if (!fileSystem.FileExists(path))
{
throw new FileNotFoundException("File not found", path);
}
var requiresTransparencyHack = TransparentImageTypes.Contains(Path.GetExtension(path) ?? string.Empty);
if (requiresTransparencyHack || forceCleanBitmap)
{
using (var stream = new SKFileStream(NormalizePath(path, fileSystem)))
{
using (var codec = SKCodec.Create(stream))
{
if (codec == null)
{
origin = GetSKCodecOrigin(orientation);
return(null);
}
// create the bitmap
var bitmap = new SKBitmap(codec.Info.Width, codec.Info.Height, !requiresTransparencyHack);
if (bitmap != null)
{
// decode
codec.GetPixels(bitmap.Info, bitmap.GetPixels());
origin = codec.Origin;
}
else
{
origin = GetSKCodecOrigin(orientation);
}
return(bitmap);
}
}
}
var resultBitmap = SKBitmap.Decode(NormalizePath(path, fileSystem));
if (resultBitmap == null)
{
return(Decode(path, true, fileSystem, orientation, out origin));
}
// If we have to resize these they often end up distorted
if (resultBitmap.ColorType == SKColorType.Gray8)
{
using (resultBitmap)
{
return(Decode(path, true, fileSystem, orientation, out origin));
}
}
origin = SKCodecOrigin.TopLeft;
return(resultBitmap);
}
public void SpecialCharactersPath()
{
var stream = new SKFileStream(@"C:\Projects\SkiaSharp\tests\Content\images\上田jj雅美.jpg");
Assert.NotNull(stream);
Assert.True(stream.Length > 0);
}
public static int Main()
{
using SKFileStream skfs = new SKFileStream("mono.png");
using SKImage img = SKImage.FromEncodedData(skfs);
Console.WriteLine($"Size: {skfs.Length} Height: {img.Height}, Width: {img.Width}");
return(0);
}
protected override void OnDrawSample(SKCanvas canvas, int width, int height)
{
string text = "\u03A3 and \u0750";
canvas.Clear(SKColors.White);
using (var paint = new SKPaint())
{
paint.IsAntialias = true;
using (var tf = SKTypeface.FromFile(SampleMedia.Fonts.ContentFontPath))
{
paint.Color = SampleMedia.Colors.XamarinGreen;
paint.TextSize = 60;
paint.Typeface = tf;
canvas.DrawText(text, 50, 50, paint);
}
using (var fileStream = new SKFileStream(SampleMedia.Fonts.ContentFontPath))
using (var tf = SKTypeface.FromStream(fileStream))
{
paint.Color = SampleMedia.Colors.XamarinDarkBlue;
paint.TextSize = 60;
paint.Typeface = tf;
canvas.DrawText(text, 50, 100, paint);
}
using (var resource = SampleMedia.Fonts.EmbeddedFont)
using (var memory = new MemoryStream())
{
resource.CopyTo(memory);
var bytes = memory.ToArray();
using (var stream = new SKMemoryStream(bytes))
using (var tf = SKTypeface.FromStream(stream))
{
paint.Color = SampleMedia.Colors.XamarinLightBlue;
paint.TextSize = 60;
paint.Typeface = tf;
canvas.DrawText(text, 50, 150, paint);
}
}
using (var managedResource = SampleMedia.Fonts.EmbeddedFont)
using (var managedStream = new SKManagedStream(managedResource, true))
using (var tf = SKTypeface.FromStream(managedStream))
{
paint.Color = SampleMedia.Colors.XamarinPurple;
paint.TextSize = 60;
paint.Typeface = tf;
canvas.DrawText(text, 50, 200, paint);
}
}
}
public void DecodeImageScanlines()
{
var path = Path.Combine(PathToImages, "CMYK.jpg");
var imageHeight = 516;
var fileData = File.ReadAllBytes(path);
var correctBitmap = SKBitmap.Decode(path);
var stream = new SKFileStream(path);
using (var codec = SKCodec.Create(stream))
{
var info = new SKImageInfo(codec.Info.Width, codec.Info.Height);
using (var scanlineBitmap = new SKBitmap(info))
{
scanlineBitmap.Erase(SKColors.Fuchsia);
var result = codec.StartScanlineDecode(info);
Assert.Equal(SKCodecResult.Success, result);
Assert.Equal(SKCodecScanlineOrder.TopDown, codec.ScanlineOrder);
Assert.Equal(0, codec.NextScanline);
// only decode every second line
for (int y = 0; y < info.Height; y += 2)
{
Assert.Equal(1, codec.GetScanlines(scanlineBitmap.GetAddress(0, y), 1, info.RowBytes));
Assert.Equal(y + 1, codec.NextScanline);
if (codec.SkipScanlines(1))
{
Assert.Equal(y + 2, codec.NextScanline);
}
else
{
Assert.Equal(imageHeight, codec.NextScanline); // reached the end
}
}
Assert.False(codec.SkipScanlines(1));
Assert.Equal(imageHeight, codec.NextScanline);
for (var x = 0; x < info.Width; x++)
{
for (var y = 0; y < info.Height; y++)
{
if (y % 2 == 0)
{
Assert.Equal(correctBitmap.GetPixel(x, y), scanlineBitmap.GetPixel(x, y));
}
else
{
Assert.Equal(SKColors.Fuchsia, scanlineBitmap.GetPixel(x, y));
}
}
}
}
}
}
public void FileStreamSelectCorrectStreamForASCIIPath()
{
var path = Path.Combine(PathToImages, "baboon.jpg");
using (var stream = SKFileStream.OpenStream(path))
{
Assert.IsType <SKFileStream>(stream);
}
}
public void CanGetPixels()
{
var stream = new SKFileStream(Path.Combine(PathToImages, "baboon.png"));
using (var codec = SKCodec.Create(stream)) {
var pixels = codec.Pixels;
Assert.Equal(codec.Info.BytesSize, pixels.Length);
}
}
public void FileStreamSelectCorrectStreamForNonASCIIPath()
{
var path = Path.Combine(PathToImages, "上田雅美.jpg");
using (var stream = SKFileStream.OpenStream(path))
{
Assert.IsType <SKFileStream>(stream);
Assert.True(((SKFileStream)stream).IsValid);
}
}
public ImageDimensions GetImageSize(string path)
{
using (var s = new SKFileStream(path))
using (var codec = SKCodec.Create(s))
{
var info = codec.Info;
return(new ImageDimensions(info.Width, info.Height));
}
}
public void DataCanBeCreatedFromStream()
{
using var stream = new SKFileStream(Path.Combine(PathToImages, "baboon.jpg"));
Assert.True(stream.IsValid);
using var data = SKData.Create(stream);
Assert.NotNull(data);
Assert.True(data.Size > 0);
}
public void GetEncodedInfo()
{
var stream = new SKFileStream(Path.Combine(PathToImages, "color-wheel.png"));
using (var codec = SKCodec.Create(stream)) {
Assert.Equal(SKEncodedInfoColor.Rgba, codec.EncodedInfo.Color);
Assert.Equal(SKEncodedInfoAlpha.Unpremul, codec.EncodedInfo.Alpha);
Assert.Equal(8, codec.EncodedInfo.BitsPerComponent);
}
}
public void StringIsMarshaledCorrectly()
{
var filename = Path.GetTempFileName();
bitmap.Save(filename, ImageFormat.Png);
var filestream = new SKFileStream(filename);
var decoder = new SKImageDecoder(filestream);
string format1 = decoder.FormatName;
}
public void GetEncodedInfo()
{
var stream = new SKFileStream(Path.Combine(PathToImages, "color-wheel.png"));
using (var codec = SKCodec.Create(stream)) {
Assert.Equal(SKImageInfo.PlatformColorType, codec.Info.ColorType);
Assert.Equal(SKAlphaType.Unpremul, codec.Info.AlphaType);
Assert.Equal(32, codec.Info.BitsPerPixel);
}
}
internal static SKBitmap Decode(string path, bool forceCleanBitmap, out SKCodecOrigin origin)
{
var requiresTransparencyHack = TransparentImageTypes.Contains(Path.GetExtension(path) ?? string.Empty);
if (requiresTransparencyHack || forceCleanBitmap)
{
using (var stream = new SKFileStream(path))
{
using (var codec = SKCodec.Create(stream))
{
if (codec == null)
{
origin = SKCodecOrigin.TopLeft;
return(null);
}
// create the bitmap
var bitmap = new SKBitmap(codec.Info.Width, codec.Info.Height, !requiresTransparencyHack);
if (bitmap != null)
{
// decode
codec.GetPixels(bitmap.Info, bitmap.GetPixels());
origin = codec.Origin;
}
else
{
origin = SKCodecOrigin.TopLeft;
}
return(bitmap);
}
}
}
var resultBitmap = SKBitmap.Decode(path);
if (resultBitmap == null)
{
return(Decode(path, true, out origin));
}
// If we have to resize these they often end up distorted
if (resultBitmap.ColorType == SKColorType.Gray8)
{
using (resultBitmap)
{
return(Decode(path, true, out origin));
}
}
origin = SKCodecOrigin.TopLeft;
return(resultBitmap);
}
public void SupportsNonASCIICharactersInPath()
{
var path = Path.Combine(PathToImages, "上田雅美.jpg");
using (var stream = new SKFileStream(path))
{
Assert.NotNull(stream);
Assert.True(stream.Length > 0);
Assert.True(stream.IsValid);
}
}
public void FileStreamForMissingFile()
{
var path = Path.Combine(PathToImages, "missing-image.png");
Assert.Null(SKFileStream.OpenStream(path));
var stream = new SKFileStream(path);
Assert.Equal(0, stream.Length);
Assert.False(stream.IsValid);
}
public void GetGifFrames()
{
const int FrameCount = 16;
var stream = new SKFileStream(Path.Combine(PathToImages, "animated-heart.gif"));
using (var codec = SKCodec.Create(stream))
{
Assert.Equal(-1, codec.RepetitionCount);
var frameInfos = codec.FrameInfo;
Assert.Equal(FrameCount, frameInfos.Length);
Assert.Equal(-1, frameInfos[0].RequiredFrame);
var cachedFrames = new SKBitmap[FrameCount];
var info = new SKImageInfo(codec.Info.Width, codec.Info.Height);
var decode = new Action <SKBitmap, int, int>((bm, cachedIndex, index) =>
{
var decodeInfo = info;
if (index > 0)
{
decodeInfo = info.WithAlphaType(frameInfos[index].AlphaType);
}
Assert.True(bm.TryAllocPixels(decodeInfo));
if (cachedIndex != -1)
{
Assert.True(cachedFrames[cachedIndex].CopyTo(bm));
}
var opts = new SKCodecOptions(index, cachedIndex);
var result = codec.GetPixels(decodeInfo, bm.GetPixels(), opts);
if (cachedIndex != -1 && frameInfos[cachedIndex].DisposalMethod == SKCodecAnimationDisposalMethod.RestorePrevious)
{
Assert.Equal(SKCodecResult.InvalidParameters, result);
}
Assert.Equal(SKCodecResult.Success, result);
});
for (var i = 0; i < FrameCount; i++)
{
var cachedFrame = cachedFrames[i] = new SKBitmap();
decode(cachedFrame, -1, i);
var uncachedFrame = new SKBitmap();
decode(uncachedFrame, frameInfos[i].RequiredFrame, i);
var cachedBytes = cachedFrame.Bytes;
var uncachedBytes = uncachedFrame.Bytes;
Assert.Equal(cachedBytes, uncachedBytes);
}
}
}
public void CanCreateStreamCodec()
{
var stream = new SKFileStream(Path.Combine(PathToImages, "color-wheel.png"));
using (var codec = SKCodec.Create(stream)) {
Assert.Equal(SKEncodedFormat.Png, codec.EncodedFormat);
Assert.Equal(128, codec.Info.Width);
Assert.Equal(128, codec.Info.Height);
Assert.Equal(SKAlphaType.Unpremul, codec.Info.AlphaType);
Assert.Equal(SKImageInfo.PlatformColorType, codec.Info.ColorType);
}
}
public ImageSize GetImageSize(string path)
{
using (var s = new SKFileStream(path))
using (var codec = SKCodec.Create(s))
{
var info = codec.Info;
return(new ImageSize
{
Width = info.Width,
Height = info.Height
});
}
}
public void GetSingleGifFrame()
{
var stream = new SKFileStream(Path.Combine(PathToImages, "animated-heart.gif"));
using (var codec = SKCodec.Create(stream))
{
var frameInfos = codec.FrameInfo;
for (var i = 0; i < frameInfos.Length; i++)
{
Assert.True(codec.GetFrameInfo(i, out var info));
Assert.Equal(frameInfos[i], info);
}
}
}
public ImageDimensions GetImageSize(string path)
{
if (!File.Exists(path))
{
throw new FileNotFoundException("File not found", path);
}
using (var s = new SKFileStream(path))
using (var codec = SKCodec.Create(s))
{
var info = codec.Info;
return(new ImageDimensions(info.Width, info.Height));
}
}
private async void LoadSkBitmap()
{
var path = ContentImg;
var newBitmap = await Task.Run(() =>
{
using (var stream = new SKFileStream(path))
{
return(SKBitmap.Decode(stream));
}
});
_contentBitmap?.Dispose();
_contentBitmap = newBitmap;
InvalidateSurface();
}
public void CanCreateStreamCodecWithResult()
{
var stream = new SKFileStream(Path.Combine(PathToImages, "color-wheel.png"));
Assert.True(stream.IsValid);
using var codec = SKCodec.Create(stream, out var result);
Assert.Equal(SKCodecResult.Success, result);
Assert.Equal(SKEncodedImageFormat.Png, codec.EncodedFormat);
Assert.Equal(128, codec.Info.Width);
Assert.Equal(128, codec.Info.Height);
Assert.Equal(SKAlphaType.Unpremul, codec.Info.AlphaType);
Assert.Equal(SKImageInfo.PlatformColorType, codec.Info.ColorType);
}
public void FileStreamSelectCorrectStreamForNonASCIIPath()
{
var path = Path.Combine(PathToImages, "上田雅美.jpg");
using (var stream = SKFileStream.OpenStream(path))
{
if (IsWindows)
{
Assert.IsType <SKManagedStream>(stream);
}
else
{
Assert.IsType <SKFileStream>(stream);
}
}
}
protected ImageData GetImage(string path)
{
using (var stream = new SKFileStream(path))
using (var bitmap = SKBitmap.Decode(stream))
{
ConvertBitmapIfNecessary(bitmap);
return(new ImageData
{
Path = path,
Width = bitmap.Width,
Height = bitmap.Height,
Pixels = bitmap.Bytes,
Format = ConvertToFormat(bitmap.ColorType)
});
}
}
public void Load(string imgFileName, Enums.ImageLoadMode loadMode = Enums.ImageLoadMode.Full)
{
Task.Factory.StartNew(() =>
{
Path = imgFileName;
switch (loadMode)
{
case Enums.ImageLoadMode.Full:
Bitmap = new Bitmap(imgFileName);
Width = Bitmap.PixelSize.Width;
Height = Bitmap.PixelSize.Height;
break;
case Enums.ImageLoadMode.Miniature:
using (var stream = new SKFileStream(imgFileName))
using (var src = SKBitmap.Decode(stream))
{
Width = src.Width;
Height = src.Height;
var scale = 100f / src.Width;
var resized = new SKBitmap(
(int)(src.Width * scale),
(int)(src.Height * scale),
src.ColorType,
src.AlphaType);
src.ScalePixels(resized, SKFilterQuality.Low);
Bitmap = new Bitmap(
resized.ColorType.ToPixelFormat(),
resized.GetPixels(),
new PixelSize(resized.Width, resized.Height),
SkiaPlatform.DefaultDpi,
resized.RowBytes);
}
break;
default:
throw new Exception($"invalid ImageLoadMode:{loadMode.ToString()}");
}
Dispatcher.UIThread.InvokeAsync(() =>
{
ImageBrush.Source = Bitmap;
OnLoad?.Invoke();
});
});
}
public void SupportsNonASCIICharactersInPath()
{
var path = Path.Combine(PathToImages, "上田雅美.jpg");
using (var stream = new SKFileStream(path))
{
if (IsWindows)
{
Assert.Equal(0, stream.Length);
throw new SkipException("Windows does not support non-ASCII characters: https://github.com/mono/SkiaSharp/issues/390");
}
else
{
Assert.NotNull(stream);
Assert.True(stream.Length > 0);
}
}
}
public void CanCreateStreamCodec()
{
var stream = new SKFileStream(Path.Combine(PathToImages, "color-wheel.png"));
using (var codec = SKCodec.Create(stream)) {
Assert.AreEqual(SKEncodedFormat.Png, codec.EncodedFormat);
Assert.AreEqual(128, codec.Info.Width);
Assert.AreEqual(128, codec.Info.Height);
Assert.AreEqual(SKAlphaType.Unpremul, codec.Info.AlphaType);
if (IsUnix)
{
Assert.AreEqual(SKColorType.Rgba8888, codec.Info.ColorType);
}
else
{
Assert.AreEqual(SKColorType.Bgra8888, codec.Info.ColorType);
}
}
}
public void GetGifFrames()
{
const int FrameCount = 16;
var stream = new SKFileStream(Path.Combine(PathToImages, "animated-heart.gif"));
using (var codec = SKCodec.Create(stream)) {
Assert.Equal(-1, codec.RepetitionCount);
var frameInfos = codec.FrameInfo;
Assert.Equal(FrameCount, frameInfos.Length);
Assert.Equal(-1, frameInfos [0].RequiredFrame);
var cachedFrames = new SKBitmap [FrameCount];
var info = new SKImageInfo(codec.Info.Width, codec.Info.Height);
var decode = new Action <SKBitmap, bool, int> ((bm, cached, index) => {
if (cached)
{
var requiredFrame = frameInfos [index].RequiredFrame;
if (requiredFrame != -1)
{
Assert.True(cachedFrames [requiredFrame].CopyTo(bm));
}
}
var opts = new SKCodecOptions(index, cached);
var result = codec.GetPixels(info, bm.GetPixels(), opts);
Assert.Equal(SKCodecResult.Success, result);
});
for (var i = 0; i < FrameCount; i++)
{
var cachedFrame = cachedFrames [i] = new SKBitmap(info);
decode(cachedFrame, true, i);
var uncachedFrame = new SKBitmap(info);
decode(uncachedFrame, false, i);
Assert.Equal(cachedFrame.Bytes, uncachedFrame.Bytes);
}
}
}
public void GarbageCollectionCollectsStreams()
{
VerifyImmediateFinalizers();
var path = Path.Combine(PathToImages, "baboon.jpg");
var weak = DoWork();
CollectGarbage();
Assert.False(weak.IsAlive);
Assert.Null(weak.Target);
WeakReference DoWork()
{
var stream = new SKFileStream(path);
return(new WeakReference(stream));
}
}
