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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 */
#ifndef mozilla_gfx_layers_TextureSourceProvider_h
#define mozilla_gfx_layers_TextureSourceProvider_h
#include "nsISupportsImpl.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/layers/CompositorTypes.h"
#include "nsTArray.h"
struct ID3D11Device;
namespace mozilla {
namespace gfx {
class DataSourceSurface;
} // namespace gfx
namespace gl {
class GLContext;
} // namespace gl
namespace layers {
class TextureHost;
class DataTextureSource;
class Compositor;
class CompositorOGL;
// Provided by a HostLayerManager or Compositor for allocating backend-specific
// texture types.
class TextureSourceProvider {
virtual already_AddRefed<DataTextureSource> CreateDataTextureSource(
TextureFlags aFlags = TextureFlags::NO_FLAGS) = 0;
virtual TimeStamp GetLastCompositionEndTime() const = 0;
virtual void TryUnlockTextures() {}
// If overridden, make sure to call the base function.
virtual void Destroy();
// If this provider is also a Compositor, return the compositor. Otherwise
// return null.
virtual Compositor* AsCompositor() { return nullptr; }
// If this provider is also a CompositorOGL, return the compositor. Otherwise
// return nullptr.
virtual CompositorOGL* AsCompositorOGL() { return nullptr; }
#ifdef XP_WIN
// On Windows, if this provides Direct3D textures, it must expose the device.
virtual ID3D11Device* GetD3D11Device() const { return nullptr; }
// If this provides OpenGL textures, it must expose the GLContext.
virtual gl::GLContext* GetGLContext() const { return nullptr; }
virtual int32_t GetMaxTextureSize() const = 0;
// Return whether or not this provider is still valid (i.e., is still being
// used to composite).
virtual bool IsValid() const = 0;
virtual ~TextureSourceProvider();
} // namespace layers
} // namespace mozilla
#endif // mozilla_gfx_layers_TextureSourceProvider_h