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/* -*- Mode: C++; tab-width: 2; 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_LAYER_DCOMP_SURFACE_IMAGE_H
#define GFX_LAYER_DCOMP_SURFACE_IMAGE_H
#include "ImageContainer.h"
#include "mozilla/layers/TextureClient.h"
#include "mozilla/layers/TextureHost.h"
namespace mozilla::wr {
class DisplayListBuilder;
class TransactionBuilder;
} // namespace mozilla::wr
namespace mozilla::layers {
already_AddRefed<TextureHost> CreateTextureHostDcompSurface(
const SurfaceDescriptor& aDesc, ISurfaceAllocator* aDeallocator,
LayersBackend aBackend, TextureFlags aFlags);
/**
* A texture data wrapping a dcomp surface handle, which is provided by the
* media foundation media engine. We won't be able to control real texture data
* because that is protected by the media engine.
*/
class DcompSurfaceTexture final : public TextureData {
public:
static already_AddRefed<TextureClient> CreateTextureClient(
HANDLE aHandle, gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
KnowsCompositor* aKnowsCompositor);
~DcompSurfaceTexture();
bool Serialize(SurfaceDescriptor& aOutDescriptor) override;
void GetSubDescriptor(RemoteDecoderVideoSubDescriptor* aOutDesc) override;
void FillInfo(TextureData::Info& aInfo) const {
aInfo.size = mSize;
aInfo.supportsMoz2D = false;
aInfo.canExposeMappedData = false;
aInfo.hasSynchronization = false;
}
bool Lock(OpenMode) override { return true; }
void Unlock() override {}
void Deallocate(LayersIPCChannel* aAllocator) override {}
private:
DcompSurfaceTexture(HANDLE aHandle, gfx::IntSize aSize,
gfx::SurfaceFormat aFormat)
: mHandle(aHandle), mSize(aSize), mFormat(aFormat) {}
const HANDLE mHandle;
const gfx::IntSize mSize;
const gfx::SurfaceFormat mFormat;
};
/**
* A image data which holds a dcomp texture which is provided by the media
* foundation media engine. As the real texture is protected, it does not
* support being accessed as a source surface.
*/
class DcompSurfaceImage : public Image {
public:
DcompSurfaceImage(HANDLE aHandle, gfx::IntSize aSize,
gfx::SurfaceFormat aFormat,
KnowsCompositor* aKnowsCompositor);
virtual ~DcompSurfaceImage() = default;
already_AddRefed<gfx::SourceSurface> GetAsSourceSurface() override {
return nullptr;
}
gfx::IntSize GetSize() const { return mTextureClient->GetSize(); };
TextureClient* GetTextureClient(KnowsCompositor* aKnowsCompositor) override;
private:
RefPtr<TextureClient> mTextureClient;
};
/**
* A Texture host living in GPU process which owns a dcomp surface handle which
* is provided by the media foundation media engine.
*/
class DcompSurfaceHandleHost : public TextureHost {
public:
DcompSurfaceHandleHost(TextureFlags aFlags,
const SurfaceDescriptorDcompSurface& aDescriptor);
gfx::SurfaceFormat GetFormat() const override { return mFormat; }
gfx::IntSize GetSize() const override { return mSize; }
const char* Name() override { return "DcompSurfaceHandleHost"; }
already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override {
return nullptr;
}
void CreateRenderTexture(
const wr::ExternalImageId& aExternalImageId) override;
void PushResourceUpdates(
wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
const Range<wr::ImageKey>& aImageKeys,
const wr::ExternalImageId& aExternalImageId) override;
void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
const wr::LayoutRect& aBounds,
const wr::LayoutRect& aClip, wr::ImageRendering aFilter,
const Range<wr::ImageKey>& aImageKeys,
PushDisplayItemFlagSet aFlags) override;
bool SupportsExternalCompositing(WebRenderBackend aBackend) override {
return true;
}
protected:
~DcompSurfaceHandleHost();
// Handle will be closed automatically when `UniqueFileHandle` gets destroyed.
const mozilla::UniqueFileHandle mHandle;
const gfx::IntSize mSize;
const gfx::SurfaceFormat mFormat;
};
} // namespace mozilla::layers
#endif // GFX_LAYER_DCOMP_SURFACE_IMAGE_H
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