280 lines
12 KiB
C#
280 lines
12 KiB
C#
// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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namespace SharpDX.Win32
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{
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/// <summary>
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/// Internal FontFileEnumerator callback
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/// </summary>
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internal class ComStreamShadow : ComStreamBaseShadow
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{
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private static readonly ComStreamVtbl Vtbl = new ComStreamVtbl();
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protected override CppObjectVtbl GetVtbl { get { return Vtbl; } }
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/// <summary>
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/// Callbacks to pointer.
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/// </summary>
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/// <param name="stream">The stream.</param>
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/// <returns></returns>
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public static IntPtr ToIntPtr(IStream stream)
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{
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return ToCallbackPtr<IStream>(stream);
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}
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private class ComStreamVtbl : ComStreamBaseVtbl
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{
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public ComStreamVtbl() : base(9)
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{
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AddMethod(new SeekDelegate(SeekImpl));
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AddMethod(new SetSizeDelegate(SetSizeImpl));
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AddMethod(new CopyToDelegate(CopyToImpl));
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AddMethod(new CommitDelegate(CommitImpl));
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AddMethod(new RevertDelegate(RevertImpl));
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AddMethod(new LockRegionDelegate(LockRegionImpl));
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AddMethod(new UnlockRegionDelegate(UnlockRegionImpl));
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AddMethod(new StatDelegate(StatImpl));
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AddMethod(new CloneDelegate(CloneImpl));
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}
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/// <unmanaged>HRESULT IStream::Seek([In] LARGE_INTEGER dlibMove,[In] SHARPDX_SEEKORIGIN dwOrigin,[Out, Optional] ULARGE_INTEGER* plibNewPosition)</unmanaged>
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/* public long Seek(long dlibMove, System.IO.SeekOrigin dwOrigin) */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private unsafe delegate int SeekDelegate(IntPtr thisPtr, long offset, SeekOrigin origin, IntPtr newPosition);
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private unsafe static int SeekImpl(IntPtr thisPtr, long offset, SeekOrigin origin, IntPtr newPosition)
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{
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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long position = callback.Seek(offset, origin);
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// pointer can be null, so we need to test it
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if (newPosition != IntPtr.Zero)
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{
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*(long*)newPosition = position;
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}
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}
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catch (Exception exception)
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{
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return (int)SharpDX.Result.GetResultFromException(exception);
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}
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return Result.Ok.Code;
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}
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/// <unmanaged>HRESULT IStream::SetSize([In] ULARGE_INTEGER libNewSize)</unmanaged>
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/* public SharpDX.Result SetSize(long libNewSize) */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate Result SetSizeDelegate(IntPtr thisPtr, long newSize);
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private static Result SetSizeImpl(IntPtr thisPtr, long newSize)
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{
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var result = Result.Ok;
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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callback.SetSize(newSize);
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}
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catch (SharpDXException exception)
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{
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result = exception.ResultCode;
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}
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catch (Exception)
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{
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result = Result.Fail.Code;
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}
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return result;
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}
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/// <unmanaged>HRESULT IStream::CopyTo([In] IStream* pstm,[In] ULARGE_INTEGER cb,[Out, Optional] ULARGE_INTEGER* pcbRead,[Out, Optional] ULARGE_INTEGER* pcbWritten)</unmanaged>
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/* internal long CopyTo_(System.IntPtr stmRef, long cb, out long cbWrittenRef) */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate int CopyToDelegate(IntPtr thisPtr, IntPtr streamPointer, long numberOfBytes, out long numberOfBytesRead, out long numberOfBytesWritten);
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private static int CopyToImpl(IntPtr thisPtr, IntPtr streamPointer, long numberOfBytes, out long numberOfBytesRead, out long numberOfBytesWritten)
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{
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numberOfBytesRead = 0;
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numberOfBytesWritten = 0;
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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numberOfBytesRead = callback.CopyTo(new ComStream(streamPointer), numberOfBytes, out numberOfBytesWritten);
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}
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catch (Exception exception)
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{
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return (int)SharpDX.Result.GetResultFromException(exception);
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}
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return Result.Ok.Code;
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}
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/// <unmanaged>HRESULT IStream::Commit([In] STGC grfCommitFlags)</unmanaged>
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/* public SharpDX.Result Commit(SharpDX.Win32.CommitFlags grfCommitFlags) */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate Result CommitDelegate(IntPtr thisPtr, CommitFlags flags);
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private static Result CommitImpl(IntPtr thisPtr, CommitFlags flags)
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{
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var result = Result.Ok;
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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callback.Commit(flags);
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}
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catch (SharpDXException exception)
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{
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result = exception.ResultCode;
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}
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catch (Exception)
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{
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result = Result.Fail.Code;
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}
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return result;
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}
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/// <unmanaged>HRESULT IStream::Revert()</unmanaged>
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/* public SharpDX.Result Revert() */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate Result RevertDelegate(IntPtr thisPtr);
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private static Result RevertImpl(IntPtr thisPtr)
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{
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var result = Result.Ok;
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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callback.Revert();
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}
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catch (SharpDXException exception)
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{
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result = exception.ResultCode;
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}
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catch (Exception)
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{
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result = Result.Fail.Code;
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}
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return result;
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}
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/// <unmanaged>HRESULT IStream::LockRegion([In] ULARGE_INTEGER libOffset,[In] ULARGE_INTEGER cb,[In] LOCKTYPE dwLockType)</unmanaged>
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/* public SharpDX.Result LockRegion(long libOffset, long cb, SharpDX.Win32.LockType dwLockType) */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate Result LockRegionDelegate(IntPtr thisPtr, long offset, long numberOfBytes, LockType lockType);
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private static Result LockRegionImpl(IntPtr thisPtr, long offset, long numberOfBytes, LockType lockType)
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{
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var result = Result.Ok;
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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callback.LockRegion(offset, numberOfBytes, lockType);
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}
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catch (SharpDXException exception)
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{
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result = exception.ResultCode;
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}
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catch (Exception)
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{
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result = Result.Fail.Code;
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}
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return result;
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}
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/// <unmanaged>HRESULT IStream::UnlockRegion([In] ULARGE_INTEGER libOffset,[In] ULARGE_INTEGER cb,[In] LOCKTYPE dwLockType)</unmanaged>
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/* public SharpDX.Result UnlockRegion(long libOffset, long cb, SharpDX.Win32.LockType dwLockType) */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate Result UnlockRegionDelegate(IntPtr thisPtr, long offset, long numberOfBytes, LockType lockType);
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private static Result UnlockRegionImpl(IntPtr thisPtr, long offset, long numberOfBytes, LockType lockType)
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{
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var result = Result.Ok;
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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callback.UnlockRegion(offset, numberOfBytes, lockType);
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}
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catch (SharpDXException exception)
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{
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result = exception.ResultCode;
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}
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catch (Exception)
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{
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result = Result.Fail.Code;
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}
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return result;
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}
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/// <unmanaged>HRESULT IStream::Stat([Out] STATSTG* pstatstg,[In] STATFLAG grfStatFlag)</unmanaged>
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/* public SharpDX.Win32.StorageStatistics GetStatistics(SharpDX.Win32.StorageStatisticsFlags grfStatFlag) */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate Result StatDelegate(IntPtr thisPtr, ref StorageStatistics.__Native statisticsPtr, StorageStatisticsFlags flags);
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private static Result StatImpl(IntPtr thisPtr, ref StorageStatistics.__Native statisticsPtr, StorageStatisticsFlags flags)
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{
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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var statistics = callback.GetStatistics(flags);
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statistics.__MarshalTo(ref statisticsPtr);
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}
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catch (SharpDXException exception)
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{
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return exception.ResultCode;
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}
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catch (Exception)
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{
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return Result.Fail.Code;
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}
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return Result.Ok;
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}
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/// <unmanaged>HRESULT IStream::Clone([Out] IStream** ppstm)</unmanaged>
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/* public SharpDX.Win32.IStream Clone() */
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate Result CloneDelegate(IntPtr thisPtr, out IntPtr streamPointer);
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private static Result CloneImpl(IntPtr thisPtr, out IntPtr streamPointer)
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{
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streamPointer = IntPtr.Zero;
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var result = Result.Ok;
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try
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{
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var shadow = ToShadow<ComStreamShadow>(thisPtr);
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var callback = ((IStream)shadow.Callback);
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var clone = callback.Clone();
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streamPointer = ComStreamShadow.ToIntPtr(clone);
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}
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catch (SharpDXException exception)
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{
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result = exception.ResultCode;
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}
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catch (Exception)
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{
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result = Result.Fail.Code;
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}
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return result;
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}
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}
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}
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}
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