/// <summary>
/// Initializes a new instance of the <see cref="WICStream"/> class from a <see cref="IStream"/>.
/// </summary>
/// <param name="factory">The factory.</param>
/// <param name="stream">The stream.</param>
/// <msdn-id>ee719789</msdn-id>
/// <unmanaged>HRESULT IWICStream::InitializeFromIStream([In, Optional] IStream* pIStream)</unmanaged>
/// <unmanaged-short>IWICStream::InitializeFromIStream</unmanaged-short>
public WICStream(ImagingFactory factory, Stream stream)
: base(IntPtr.Zero)
{
factory.CreateStream(this);
streamProxy = new ComStreamProxy(stream);
var istreamPtr = ComStreamShadow.ToIntPtr(streamProxy);
InitializeFromIStream_(istreamPtr);
}
protected override void Dispose(bool disposing)
{
if (streamProxy != null)
{
streamProxy.Dispose();
streamProxy = null;
}
base.Dispose(disposing);
}
/// <summary>
/// Instantiates a new instance <see cref="ByteStream"/> from a <see cref="Stream"/>.
/// </summary>
/// <msdn-id>hh162754</msdn-id>
/// <unmanaged>HRESULT MFCreateMFByteStreamOnStreamEx([In] IUnknown* punkStream,[Out] IMFByteStream** ppByteStream)</unmanaged>
/// <unmanaged-short>MFCreateMFByteStreamOnStreamEx</unmanaged-short>
public ByteStream(Stream sourceStream)
{
this.sourceStream = sourceStream;
#if WIN8METRO
var randomAccessStream = sourceStream.AsRandomAccessStream();
randomAccessStreamCom = new ComObject(Marshal.GetIUnknownForObject(randomAccessStream));
MediaFactory.CreateMFByteStreamOnStreamEx(randomAccessStreamCom, this);
#else
streamProxy = new ComStreamProxy(sourceStream);
IByteStream localStream;
MediaFactory.CreateMFByteStreamOnStream(ComStream.ToIntPtr(streamProxy), out localStream);
NativePointer = ((ByteStream) localStream).NativePointer;
#endif
}
protected unsafe override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (streamProxy != null)
{
streamProxy.Dispose();
streamProxy = null;
}
if (randomAccessStreamCom != null)
{
randomAccessStreamCom.Dispose();
randomAccessStreamCom = null;
}
}
