/* -*- Mode: C++; tab-width: ; 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 MOZILLA_GFX_RENDERDCOMPSURFACETEXTUREHOST_H
#define MOZILLA_GFX_RENDERDCOMPSURFACETEXTUREHOST_H
#include "GLTypes.h"
#include "RenderTextureHostSWGL.h"
#include "mozilla/webrender/RenderThread.h"
struct IDCompositionDevice;
struct IDCompositionSurface;
inline mozilla::LazyLogModule gDcompSurface(
"DcompSurface");
namespace mozilla::wr {
/**
* A render texture host is responsible to create a dcomp surface from an
* existing dcomp handle. Currently usage is that MF media engine will create
* a surface handle from another remote process, and we reconstruct the surface
* and use it in the DCLayerTree in the GPU process.
*/
class RenderDcompSurfaceTextureHost final :
public RenderTextureHostSWGL {
public:
RenderDcompSurfaceTextureHost(HANDLE aHandle, gfx::IntSize aSize,
gfx::SurfaceFormat aFormat);
// RenderTextureHost
RenderDcompSurfaceTextureHost* AsRenderDcompSurfaceTextureHost() override {
return this;
}
// RenderTextureHostSWGL
gfx::SurfaceFormat GetFormat()
const override {
return mFormat; }
gfx::ColorDepth GetColorDepth()
const override {
return gfx::ColorDepth::COLOR_8;
}
size_t GetPlaneCount()
const override {
return 1; }
bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
PlaneInfo& aPlaneInfo) override {
return false;
}
void UnmapPlanes() override {}
gfx::YUVRangedColorSpace GetYUVColorSpace()
const override {
return gfx::YUVRangedColorSpace::GbrIdentity;
}
size_t Bytes() override {
return 0; }
gfx::IntSize GetSize()
const {
return mSize; };
HANDLE GetDcompSurfaceHandle()
const {
return mHandle; }
// Not thread-safe. They should only be called on the renderer thread on the
// GPU process.
IDCompositionSurface* CreateSurfaceFromDevice(IDCompositionDevice* aDevice);
IDCompositionSurface* GetSurface()
const {
return mDcompSurface; };
private:
const HANDLE mHandle;
const gfx::IntSize mSize;
const gfx::SurfaceFormat mFormat;
RefPtr<IDCompositionSurface> mDcompSurface;
};
}
// namespace mozilla::wr
#endif // MOZILLA_GFX_RENDERDCOMPSURFACETEXTUREHOST_H
