Merge pull request #20 from paulcbetts/winrt-bitmap-cleanup
WinRT bitmap cleanup
This commit is contained in:
Paul Betts
Коммит
acc7f09fde
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@ -106,7 +106,9 @@
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<Compile Include="PlatformModeDetector.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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<Compile Include="WinRT\Bitmaps.cs" />
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<Compile Include="WinRT\BitmapsFallback.cs" />
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<Compile Include="WinRT\Color.cs" />
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<Compile Include="WinRT\NativeMethods.cs" />
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<Compile Include="WinRT\Point.cs" />
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<Compile Include="WinRT\Rect.cs" />
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</ItemGroup>
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@ -20,7 +20,23 @@ namespace Splat
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using (var rwStream = new InMemoryRandomAccessStream()) {
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await sourceStream.CopyToAsync(rwStream.AsStreamForWrite());
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var decoder = await BitmapDecoder.CreateAsync(rwStream);
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var decoder = default(BitmapDecoder);
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bool tryFallback = false;
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try {
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decoder = await BitmapDecoder.CreateAsync(rwStream);
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} catch (Exception ex) {
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if (ex.Message.Contains("0x88982F50") || ex.Message.Contains("0x88982F60")) {
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// NB: Can't await in a catch block, have to do some silliness
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tryFallback = true;
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} else {
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throw;
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}
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}
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if (tryFallback) {
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return await new FallbackBitmapLoader().Load(sourceStream, desiredWidth, desiredHeight);
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}
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var transform = new BitmapTransform();
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if (desiredWidth != null) {
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@ -31,7 +47,7 @@ namespace Splat
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var pixelData = await decoder.GetPixelDataAsync(decoder.BitmapPixelFormat, decoder.BitmapAlphaMode, transform, ExifOrientationMode.RespectExifOrientation, ColorManagementMode.ColorManageToSRgb);
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var pixels = pixelData.DetachPixelData();
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WriteableBitmap bmp = new WriteableBitmap((int)decoder.OrientedPixelWidth, (int)decoder.OrientedPixelHeight);
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var bmp = new WriteableBitmap((int)decoder.OrientedPixelWidth, (int)decoder.OrientedPixelHeight);
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using (var bmpStream = bmp.PixelBuffer.AsStream()) {
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bmpStream.Seek(0, SeekOrigin.Begin);
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bmpStream.Write(pixels, 0, (int)bmpStream.Length);
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@ -0,0 +1,360 @@
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using Splat;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using System.Runtime.InteropServices.ComTypes;
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using System.Runtime.InteropServices.WindowsRuntime;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using Windows.UI.Xaml.Media.Imaging;
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namespace Splat
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{
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class FallbackBitmapLoader : IBitmapLoader
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{
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public async Task<IBitmap> Load(Stream sourceStream, float? desiredWidth, float? desiredHeight)
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{
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var factory = new ImagingFactory();
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var decoder = factory.CreateDecoderFromStream(sourceStream, WICDecodeOptions.WICDecodeMetadataCacheOnLoad);
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var frame = decoder.GetFrame(0);
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var frameSize = frame.GetSize();
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var convertedSource = default(BitmapSource);
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if (!frame.GetPixelFormat().Equals(NativeMethods.WICPixelFormat32bppBGRA)) {
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var converter = factory.CreateFormatConverter();
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converter.Initialize(frame, NativeMethods.WICPixelFormat32bppBGRA);
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convertedSource = converter;
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} else {
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convertedSource = frame;
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}
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var buffer = convertedSource.CopyPixels();
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var bmp = new WriteableBitmap(frameSize.Width, frameSize.Height);
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using (var stream = bmp.PixelBuffer.AsStream()) {
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stream.Write(buffer, 0, buffer.Length);
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}
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bmp.Invalidate();
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return new WriteableBitmapImageBitmap(bmp);
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}
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public async Task<IBitmap> LoadFromResource(string source, float? desiredWidth, float? desiredHeight)
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{
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throw new NotImplementedException();
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}
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public IBitmap Create(float width, float height)
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{
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throw new NotImplementedException();
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}
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class ImagingFactory : IDisposable
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{
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IDisposable inner;
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IWICImagingFactory comObject;
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IntPtr nativePointer;
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IntPtr riidPointer;
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public ImagingFactory()
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{
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var riid = typeof(IWICImagingFactory).GetTypeInfo().GUID;
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byte[] riidBytes = riid.ToByteArray();
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riidPointer = Marshal.AllocHGlobal(riidBytes.Length);
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Marshal.Copy(riidBytes, 0, riidPointer, riidBytes.Length);
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var localQuery = new MultiQueryInterface() {
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InterfaceIID = riidPointer,
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IUnknownPointer = IntPtr.Zero,
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ResultCode = 0,
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};
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var result = NativeMethods.CoCreateInstanceFromApp(NativeMethods.CLSID_WICImagingFactory, IntPtr.Zero, CLSCTX.CLSCTX_INPROC_SERVER, IntPtr.Zero, 1, ref localQuery);
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if (result != NativeMethods.S_OK || localQuery.ResultCode != NativeMethods.S_OK) {
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throw new Exception("CoCreateInstanceFromApp failed");
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}
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nativePointer = localQuery.IUnknownPointer;
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comObject = (IWICImagingFactory)Marshal.GetObjectForIUnknown(nativePointer);
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inner = new DelegateDisposable(() => {
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Marshal.FreeHGlobal(riidPointer);
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Marshal.ReleaseComObject(comObject);
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});
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}
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~ImagingFactory() { Dispose(); }
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public void Dispose()
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{
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Interlocked.Exchange(ref inner, DelegateDisposable.Empty).Dispose();
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}
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public BitmapDecoder CreateDecoderFromStream(Stream stream, WICDecodeOptions wicDecodeOptions)
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{
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IntPtr nativePointer;
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var nullGuid = Guid.Empty;
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var result = comObject.CreateDecoderFromStream(new ManagedIStream(stream), ref nullGuid, wicDecodeOptions, out nativePointer);
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if (result != NativeMethods.S_OK) throw new Exception("CreateDecoderFromStream failed");
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return new BitmapDecoder(nativePointer);
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}
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public FormatConverter CreateFormatConverter()
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{
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IntPtr nativePointer;
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var result = comObject.CreateFormatConverter(out nativePointer);
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if (result != NativeMethods.S_OK)
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throw new Exception("CreateFormatConverter failed");
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return new FormatConverter(nativePointer);
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}
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}
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class BitmapDecoder : IDisposable
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{
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IWICBitmapDecoder comObject;
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IntPtr nativePointer;
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IDisposable inner;
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internal BitmapDecoder(IntPtr nativePointer)
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{
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this.nativePointer = nativePointer;
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this.comObject = (IWICBitmapDecoder)Marshal.GetObjectForIUnknown(nativePointer);
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inner = new DelegateDisposable(() => Marshal.ReleaseComObject(comObject));
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}
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public BitmapFrameDecode GetFrame(uint index)
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{
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IntPtr nativePointer;
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var result = comObject.GetFrame(index, out nativePointer);
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if (result != NativeMethods.S_OK) {
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throw new Exception("GetFrame failed");
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}
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return new BitmapFrameDecode(nativePointer);
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}
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~BitmapDecoder() { Dispose(); }
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public void Dispose()
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{
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Interlocked.Exchange(ref inner, DelegateDisposable.Empty).Dispose();
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}
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}
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class BitmapSource : IDisposable
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{
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IWICBitmapSource comObject;
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public IntPtr NativePointer { get; private set; }
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IDisposable inner;
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internal BitmapSource(IntPtr nativePointer)
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{
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NativePointer = nativePointer;
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comObject = (IWICBitmapSource)Marshal.GetObjectForIUnknown(NativePointer);
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inner = new DelegateDisposable(() => Marshal.ReleaseComObject(comObject));
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}
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public System.Drawing.Size GetSize()
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{
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uint width, height;
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comObject.GetSize(out width, out height);
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// this will throw an exception if dimensions are > Int32.MaxValue
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// in fact all of this code assumes dimensions will not overflow under arithmetic
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return new System.Drawing.Size(checked((int)width), checked((int)height));
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}
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public Guid GetPixelFormat()
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{
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Guid pixelFormat;
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comObject.GetPixelFormat(out pixelFormat);
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return pixelFormat;
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}
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public byte[] CopyPixels()
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{
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uint width, height;
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GetSizeInternal(out width, out height);
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byte[] pixels = new byte[width * height * 4];
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uint bufferSize = width * height * 32;
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IntPtr buffer = Marshal.AllocCoTaskMem(checked((int)bufferSize));
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comObject.CopyPixels(
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IntPtr.Zero,
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width * 4,
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bufferSize,
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buffer);
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Marshal.Copy(buffer, pixels, 0, pixels.Length);
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Marshal.FreeCoTaskMem(buffer);
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return pixels;
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}
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private void GetSizeInternal(out uint width, out uint height)
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{
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comObject.GetSize(out width, out height);
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}
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~BitmapSource() { Dispose(); }
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public void Dispose()
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{
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Interlocked.Exchange(ref inner, DelegateDisposable.Empty).Dispose();
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}
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}
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class BitmapFrameDecode : BitmapSource
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{
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internal BitmapFrameDecode(IntPtr nativePointer) : base(nativePointer) { }
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}
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class FormatConverter : BitmapSource
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{
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IWICFormatConverter comObject;
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internal FormatConverter(IntPtr nativePointer)
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: base(nativePointer)
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{
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this.comObject = (IWICFormatConverter)Marshal.GetObjectForIUnknown(NativePointer);
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}
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public void Initialize(BitmapSource bitmapSource, Guid pixelFormat)
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{
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comObject.Initialize(bitmapSource.NativePointer, pixelFormat, 0, IntPtr.Zero, 0.0f, 0);
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}
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}
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class ManagedIStream : IStream
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{
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Stream _stream;
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public ManagedIStream(Stream stream)
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{
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if (stream == null)
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throw new ArgumentNullException("stream");
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_stream = stream;
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}
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public void Read(byte[] pv, int cb, IntPtr pcbRead)
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{
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int val = _stream.Read(pv, 0, cb);
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if (pcbRead != IntPtr.Zero) {
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Marshal.WriteInt32(pcbRead, val);
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}
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}
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public void Write(byte[] pv, int cb, IntPtr pcbWritten)
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{
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_stream.Write(pv, 0, cb);
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if (pcbWritten != IntPtr.Zero) {
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Marshal.WriteInt32(pcbWritten, cb);
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}
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}
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public void Seek(long dlibMove, int dwOrigin, IntPtr plibNewPosition)
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{
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SeekOrigin origin;
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switch (dwOrigin)
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{
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case 0: origin = SeekOrigin.Begin; break;
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case 1: origin = SeekOrigin.Current; break;
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case 2: origin = SeekOrigin.End; break;
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default: throw new ArgumentOutOfRangeException("dwOrigin");
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}
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long val = _stream.Seek(dlibMove, origin);
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if (plibNewPosition != IntPtr.Zero) {
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Marshal.WriteInt64(plibNewPosition, val);
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}
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}
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public void SetSize(long libNewSize)
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{
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throw new NotSupportedException();
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}
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public void Stat(out STATSTG pstatstg, int grfStatFlag)
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{
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pstatstg = new STATSTG {
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type = 2,
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cbSize = _stream.Length,
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};
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if (_stream.CanRead && _stream.CanWrite) {
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pstatstg.grfMode = 0x00000002;
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} else if (_stream.CanWrite) {
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pstatstg.grfMode = 0x00000001;
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} else if (_stream.CanRead) {
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pstatstg.grfMode = 0x00000000;
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} else {
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throw new IOException();
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}
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}
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public void Clone(out IStream ppstm)
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{
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throw new NotSupportedException();
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}
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public void Commit(int grfCommitFlags)
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{
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throw new NotImplementedException();
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}
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public void CopyTo(IStream pstm, long cb, IntPtr pcbRead, IntPtr pcbWritten)
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{
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throw new NotImplementedException();
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}
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public void LockRegion(long libOffset, long cb, int dwLockType)
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{
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throw new NotImplementedException();
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}
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public void Revert()
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{
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throw new NotImplementedException();
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}
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public void UnlockRegion(long libOffset, long cb, int dwLockType)
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{
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throw new NotImplementedException();
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}
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}
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}
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sealed class DelegateDisposable : IDisposable
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{
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Action block;
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static IDisposable empty;
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public static IDisposable Empty {
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get { return empty ?? (empty = new DelegateDisposable(() => {})); }
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}
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public DelegateDisposable(Action block)
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{
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this.block = block;
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}
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public void Dispose()
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{
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block();
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}
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}
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}
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@ -0,0 +1,152 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Runtime.InteropServices.ComTypes;
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using System.Text;
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using System.Threading.Tasks;
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namespace Splat
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{
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internal static class NativeMethods
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{
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public const int S_OK = 0;
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public static readonly Guid CLSID_WICImagingFactory = new Guid("cacaf262-9370-4615-a13b-9f5539da4c0a");
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public static readonly Guid WICPixelFormat1bppIndexed = new Guid("6fddc324-4e03-4bfe-b185-3d77768dc901");
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public static readonly Guid WICPixelFormatBlackWhite = new Guid("6fddc324-4e03-4bfe-b185-3d77768dc905");
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public static readonly Guid WICPixelFormat8bppIndexed = new Guid("6fddc324-4e03-4bfe-b185-3d77768dc904");
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public static readonly Guid WICPixelFormatDontCare = new Guid("6fddc324-4e03-4bfe-b185-3d77768dc900");
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public static readonly Guid WICPixelFormat24bppBGR = new Guid("6fddc324-4e03-4bfe-b185-3d77768dc90c");
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public static readonly Guid WICPixelFormat32bppBGRA = new Guid("6fddc324-4e03-4bfe-b185-3d77768dc90e");
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public static readonly Guid WICPixelFormat48bppRGB = new Guid("6fddc324-4e03-4bfe-b185-3d77768dc915");
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[DllImport("ole32.dll", ExactSpelling = true, EntryPoint = "CoCreateInstanceFromApp", PreserveSig = true)]
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public static extern int CoCreateInstanceFromApp(
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[In, MarshalAs(UnmanagedType.LPStruct)] Guid rclsid,
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IntPtr pUnkOuter,
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CLSCTX dwClsContext,
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IntPtr reserved,
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int countMultiQuery,
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ref MultiQueryInterface query);
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}
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[Flags]
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internal enum CLSCTX : uint
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{
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CLSCTX_INPROC_SERVER = 0x1,
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CLSCTX_INPROC_HANDLER = 0x2,
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CLSCTX_LOCAL_SERVER = 0x4,
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CLSCTX_INPROC_SERVER16 = 0x8,
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CLSCTX_REMOTE_SERVER = 0x10,
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CLSCTX_INPROC_HANDLER16 = 0x20,
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CLSCTX_RESERVED1 = 0x40,
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CLSCTX_RESERVED2 = 0x80,
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CLSCTX_RESERVED3 = 0x100,
|
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CLSCTX_RESERVED4 = 0x200,
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CLSCTX_NO_CODE_DOWNLOAD = 0x400,
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CLSCTX_RESERVED5 = 0x800,
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CLSCTX_NO_CUSTOM_MARSHAL = 0x1000,
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CLSCTX_ENABLE_CODE_DOWNLOAD = 0x2000,
|
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CLSCTX_NO_FAILURE_LOG = 0x4000,
|
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CLSCTX_DISABLE_AAA = 0x8000,
|
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CLSCTX_ENABLE_AAA = 0x10000,
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CLSCTX_FROM_DEFAULT_CONTEXT = 0x20000,
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CLSCTX_ACTIVATE_32_BIT_SERVER = 0x40000,
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CLSCTX_ACTIVATE_64_BIT_SERVER = 0x80000,
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CLSCTX_INPROC = CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER,
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CLSCTX_SERVER = CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER,
|
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CLSCTX_ALL = CLSCTX_SERVER | CLSCTX_INPROC_HANDLER
|
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}
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|
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internal enum WICDecodeOptions : uint
|
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{
|
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WICDecodeMetadataCacheOnDemand = 0,
|
||||
WICDecodeMetadataCacheOnLoad = 1,
|
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WICMETADATACACHEOPTION_FORCE_DWORD = 0x7fffffff
|
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}
|
||||
|
||||
[Guid("ec5ec8a9-c395-4314-9c77-54d7a935ff70")]
|
||||
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
|
||||
[ComImport]
|
||||
internal interface IWICImagingFactory
|
||||
{
|
||||
void CreateDecoderFromFilenameDummy();
|
||||
int CreateDecoderFromStream(
|
||||
IStream pIStream,
|
||||
ref Guid pguidVendor,
|
||||
WICDecodeOptions metadataOptions,
|
||||
out IntPtr ppIDecoder);
|
||||
void CreateDecoderFromFileHandleDummy();
|
||||
void CreateComponentInfoDummy();
|
||||
void CreateDecoderDummy();
|
||||
void CreateEncoderDummy();
|
||||
void CreatePaletteDummy();
|
||||
int CreateFormatConverter(out IntPtr ppIFormatConverter);
|
||||
}
|
||||
|
||||
[Guid("9EDDE9E7-8DEE-47ea-99DF-E6FAF2ED44BF")]
|
||||
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
|
||||
[ComImport]
|
||||
internal interface IWICBitmapDecoder
|
||||
{
|
||||
void QueryCapabilityDummy();
|
||||
void InitializeDummy();
|
||||
void GetContainerFormatDummy();
|
||||
void GetDecoderInfoDummy();
|
||||
void CopyPaletteDummy();
|
||||
void GetMetadataQueryReaderDummy();
|
||||
void GetPreviewDummy();
|
||||
void GetColorContextsDummy();
|
||||
void GetThumbnailDummy();
|
||||
void GetFrameCountDummy();
|
||||
int GetFrame(uint index, out IntPtr ppIFrameDecode);
|
||||
}
|
||||
|
||||
[Guid("00000120-a8f2-4877-ba0a-fd2b6645fb94")]
|
||||
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
|
||||
[ComImport]
|
||||
internal interface IWICBitmapSource
|
||||
{
|
||||
void GetSize(out uint puiWidth, out uint puiHeight);
|
||||
void GetPixelFormat(out Guid pPixelFormat);
|
||||
void GetResolutionDummy();
|
||||
void CopyPaletteDummy();
|
||||
void CopyPixels(
|
||||
IntPtr prc, // WICRect
|
||||
uint cbStride,
|
||||
uint cbBufferSize,
|
||||
IntPtr pbBuffer);
|
||||
}
|
||||
|
||||
[Guid("00000301-a8f2-4877-ba0a-fd2b6645fb94")]
|
||||
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
|
||||
[ComImport]
|
||||
internal interface IWICFormatConverter
|
||||
{
|
||||
#region IWICBitmapSource
|
||||
void GetSizeDummy();
|
||||
void GetPixelFormatDummy();
|
||||
void GetResolutionDummy();
|
||||
void CopyPaletteDummy();
|
||||
void CopyPixelsDummy();
|
||||
#endregion
|
||||
void Initialize(
|
||||
IntPtr pISource,
|
||||
[MarshalAs(UnmanagedType.LPStruct)]
|
||||
Guid dstFormat,
|
||||
uint dither,
|
||||
IntPtr pIPalette,
|
||||
double alphaThresholdPercent,
|
||||
uint paletteTranslate);
|
||||
}
|
||||
|
||||
[StructLayout(LayoutKind.Sequential)]
|
||||
internal struct MultiQueryInterface
|
||||
{
|
||||
public IntPtr InterfaceIID;
|
||||
public IntPtr IUnknownPointer;
|
||||
public int ResultCode;
|
||||
}
|
||||
}
|
||||
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