diff options
Diffstat (limited to '')
| -rw-r--r-- | gfx/layers/RemoteTextureMap.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/gfx/layers/RemoteTextureMap.h b/gfx/layers/RemoteTextureMap.h new file mode 100644 index 0000000000..a3e73679fc --- /dev/null +++ b/gfx/layers/RemoteTextureMap.h @@ -0,0 +1,244 @@ +/* -*- 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 http://mozilla.org/MPL/2.0/. */ + +#ifndef MOZILLA_GFX_RemoteTextureMap_H +#define MOZILLA_GFX_RemoteTextureMap_H + +#include <deque> +#include <functional> +#include <map> +#include <memory> +#include <queue> +#include <stack> +#include <unordered_set> +#include <utility> + +#include "mozilla/gfx/Point.h" // for IntSize +#include "mozilla/gfx/Types.h" // for SurfaceFormat +#include "mozilla/layers/CompositorTypes.h" // for TextureFlags, etc +#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor +#include "mozilla/layers/TextureHost.h" +#include "mozilla/Monitor.h" +#include "mozilla/StaticPtr.h" +#include "mozilla/ThreadSafeWeakPtr.h" +#include "mozilla/UniquePtr.h" +#include "mozilla/webrender/WebRenderTypes.h" + +class nsISerialEventTarget; + +namespace mozilla { + +namespace gl { +class SharedSurface; +} + +namespace layers { + +class CompositableHost; +class RemoteTextureHostWrapper; +class TextureData; +class TextureHost; + +/** + * A class provides API for remote texture owners. + */ +class RemoteTextureOwnerClient final { + public: + NS_INLINE_DECL_THREADSAFE_REFCOUNTING(RemoteTextureOwnerClient) + + explicit RemoteTextureOwnerClient(const base::ProcessId aForPid); + + bool IsRegistered(const RemoteTextureOwnerId aOwnerId); + void RegisterTextureOwner(const RemoteTextureOwnerId aOwnerId, + bool aIsSyncMode); + void UnregisterTextureOwner(const RemoteTextureOwnerId aOwnerId); + void UnregisterAllTextureOwners(); + void PushTexture(const RemoteTextureId aTextureId, + const RemoteTextureOwnerId aOwnerId, + UniquePtr<TextureData>&& aTextureData, + const std::shared_ptr<gl::SharedSurface>& aSharedSurface); + void PushDummyTexture(const RemoteTextureId aTextureId, + const RemoteTextureOwnerId aOwnerId); + void GetLatestBufferSnapshot(const RemoteTextureOwnerId aOwnerId, + const ipc::Shmem& aDestShmem, + const gfx::IntSize& aSize); + UniquePtr<TextureData> CreateOrRecycleBufferTextureData( + const RemoteTextureOwnerId aOwnerId, gfx::IntSize aSize, + gfx::SurfaceFormat aFormat); + std::shared_ptr<gl::SharedSurface> GetRecycledSharedSurface( + const RemoteTextureOwnerId aOwnerId); + + const base::ProcessId mForPid; + + protected: + ~RemoteTextureOwnerClient(); + + std::unordered_set<RemoteTextureOwnerId, RemoteTextureOwnerId::HashFn> + mOwnerIds; +}; + +/** + * A class to map RemoteTextureId to remote texture(TextureHost). + * Remote textures are provided by texture owner. + */ +class RemoteTextureMap { + public: + static void Init(); + static void Shutdown(); + static RemoteTextureMap* Get() { return sInstance; } + + RemoteTextureMap(); + ~RemoteTextureMap(); + + // Push remote texture data and gl::SharedSurface from texture owner. + // The texture data is used for creating TextureHost. + // gl::SharedSurface is pushed only when the surface needs to be kept alive + // during TextureHost usage. The texture data and the surface might be + // recycled when TextureHost is destroyed. + void PushTexture(const RemoteTextureId aTextureId, + const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid, + UniquePtr<TextureData>&& aTextureData, + RefPtr<TextureHost>& aTextureHost, + const std::shared_ptr<gl::SharedSurface>& aSharedSurface); + + void GetLatestBufferSnapshot(const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid, + const ipc::Shmem& aDestShmem, + const gfx::IntSize& aSize); + + // aIsSyncMode defines if RemoteTextureMap::GetRemoteTextureForDisplayList() + // works synchronously. + void RegisterTextureOwner(const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid, bool aIsSyncMode); + void UnregisterTextureOwner(const RemoteTextureOwnerId aOwnerIds, + const base::ProcessId aForPid); + void UnregisterTextureOwners( + const std::unordered_set<RemoteTextureOwnerId, + RemoteTextureOwnerId::HashFn>& aOwnerIds, + const base::ProcessId aForPid); + + // Get TextureHost that is used for building wr display list. + // In sync mode, mRemoteTextureForDisplayList holds TextureHost of mTextureId. + // In async mode, it could be previous remote texture's TextureHost that is + // compatible to the mTextureId's TextureHost. + void GetRemoteTextureForDisplayList( + RemoteTextureHostWrapper* aTextureHostWrapper); + + // Get ExternalImageId of remote texture for WebRender rendering. + // This synchronously waits until remote texture becomes ready. + wr::MaybeExternalImageId GetExternalImageIdOfRemoteTextureSync( + const RemoteTextureId aTextureId, const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid); + + void ReleaseRemoteTextureHostForDisplayList( + RemoteTextureHostWrapper* aTextureHostWrapper); + + RefPtr<TextureHost> GetOrCreateRemoteTextureHostWrapper( + const RemoteTextureId aTextureId, const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid, const gfx::IntSize aSize, + const TextureFlags aFlags); + + void UnregisterRemoteTextureHostWrapper(const RemoteTextureId aTextureId, + const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid); + + void RegisterRemoteTexturePushListener(const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid, + CompositableHost* aListener); + + void UnregisterRemoteTexturePushListener(const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid, + CompositableHost* aListener); + + UniquePtr<TextureData> GetRecycledBufferTextureData( + const RemoteTextureOwnerId aOwnerId, const base::ProcessId aForPid, + gfx::IntSize aSize, gfx::SurfaceFormat aFormat); + + std::shared_ptr<gl::SharedSurface> GetRecycledSharedSurface( + const RemoteTextureOwnerId aOwnerId, const base::ProcessId aForPid); + + static RefPtr<TextureHost> CreateRemoteTexture(TextureData* aTextureData, + TextureFlags aTextureFlags); + + protected: + // Holds data related to remote texture + struct TextureDataHolder { + TextureDataHolder(const RemoteTextureId aTextureId, + RefPtr<TextureHost> aTextureHost, + UniquePtr<TextureData>&& aTextureData, + const std::shared_ptr<gl::SharedSurface>& aSharedSurface); + + const RemoteTextureId mTextureId; + // TextureHost of remote texture + // Compositable ref of the mTextureHost should be updated within mMonitor. + // The compositable ref is used to check if TextureHost(remote texture) is + // still in use by WebRender. + RefPtr<TextureHost> mTextureHost; + // Holds BufferTextureData of TextureHost + UniquePtr<TextureData> mTextureData; + // Holds gl::SharedSurface of TextureHost + std::shared_ptr<gl::SharedSurface> mSharedSurface; + }; + + struct TextureOwner { + bool mIsSyncMode = true; + // Holds TextureDataHolders that wait to be used for building wr display + // list. + std::deque<UniquePtr<TextureDataHolder>> mWaitingTextureDataHolders; + // Holds TextureDataHolders that are used for building wr display list. + std::deque<UniquePtr<TextureDataHolder>> mUsingTextureDataHolders; + RemoteTextureId mLatestTextureId = {0}; + CompositableTextureHostRef mLatestTextureHost; + std::stack<UniquePtr<TextureData>> mRecycledTextures; + std::queue<std::shared_ptr<gl::SharedSurface>> mRecycledSharedSurfaces; + }; + + // Holds data related to remote texture wrapper + struct RemoteTextureHostWrapperHolder { + explicit RemoteTextureHostWrapperHolder( + RefPtr<TextureHost> aRemoteTextureHostWrapper); + + const RefPtr<TextureHost> mRemoteTextureHostWrapper; + // Hold compositable ref of remote texture of the RemoteTextureId in async + // mode. It is for keeping the texture alive during its rendering by + // WebRender. + CompositableTextureHostRef mAsyncRemoteTextureHost; + }; + + void UpdateTexture(const MonitorAutoLock& aProofOfLock, + RemoteTextureMap::TextureOwner* aOwner, + const RemoteTextureId aTextureId); + + void KeepTextureDataAliveForTextureHostIfNecessary( + const MonitorAutoLock& aProofOfLock, + std::deque<UniquePtr<TextureDataHolder>>& aHolders); + + RemoteTextureMap::TextureOwner* GetTextureOwner( + const MonitorAutoLock& aProofOfLock, const RemoteTextureOwnerId aOwnerId, + const base::ProcessId aForPid); + + Monitor mMonitor MOZ_UNANNOTATED; + + std::map<std::pair<base::ProcessId, RemoteTextureOwnerId>, + UniquePtr<TextureOwner>> + mTextureOwners; + + std::map<std::pair<base::ProcessId, RemoteTextureId>, + UniquePtr<RemoteTextureHostWrapperHolder>> + mRemoteTextureHostWrapperHolders; + + std::map<std::pair<base::ProcessId, RemoteTextureOwnerId>, + RefPtr<CompositableHost>> + mRemoteTexturePushListeners; + + static StaticAutoPtr<RemoteTextureMap> sInstance; +}; + +} // namespace layers +} // namespace mozilla + +#endif // MOZILLA_GFX_RemoteTextureMap_H |