gecko-dev/gfx/layers/D3D9SurfaceImage.h

75 lines
2.3 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GFX_D3DSURFACEIMAGE_H
#define GFX_D3DSURFACEIMAGE_H
#include "mozilla/RefPtr.h"
#include "ImageContainer.h"
#include "nsAutoPtr.h"
#include "d3d9.h"
namespace mozilla {
namespace layers {
// Image class that wraps a IDirect3DSurface9. This class copies the image
// passed into SetData(), so that it can be accessed from other D3D devices.
// This class also manages the synchronization of the copy, to ensure the
// resource is ready to use.
class D3D9SurfaceImage : public Image
, public ISharedImage {
public:
struct Data {
Data(IDirect3DSurface9* aSurface, const nsIntRect& aRegion)
: mSurface(aSurface), mRegion(aRegion) {}
RefPtr<IDirect3DSurface9> mSurface;
nsIntRect mRegion;
};
D3D9SurfaceImage();
virtual ~D3D9SurfaceImage();
virtual ISharedImage* AsSharedImage() MOZ_OVERRIDE { return this; }
// Copies the surface into a sharable texture's surface, and initializes
// the image.
HRESULT SetData(const Data& aData);
// Returns the description of the shared surface.
const D3DSURFACE_DESC& GetDesc() const;
// Returns the HANDLE that can be used to open the image as a shared resource.
// If the operation to copy the original resource to the shared resource
// hasn't finished yet, this function blocks until the synchronization is
// complete.
HANDLE GetShareHandle();
gfx::IntSize GetSize() MOZ_OVERRIDE;
virtual TemporaryRef<gfx::SourceSurface> GetAsSourceSurface() MOZ_OVERRIDE;
virtual TextureClient* GetTextureClient(CompositableClient* aClient) MOZ_OVERRIDE;
virtual uint8_t* GetBuffer() MOZ_OVERRIDE { return nullptr; }
private:
// Blocks the calling thread until the copy operation started in SetData()
// is complete, whereupon the texture is safe to use.
void EnsureSynchronized();
gfx::IntSize mSize;
RefPtr<IDirect3DTexture9> mTexture;
RefPtr<IDirect3DQuery9> mQuery;
RefPtr<TextureClient> mTextureClient;
HANDLE mShareHandle;
D3DSURFACE_DESC mDesc;
};
} // namepace layers
} // namespace mozilla
#endif // GFX_D3DSURFACEIMAGE_H