| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_SOFTWARE_FRAME_MANAGER_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_SOFTWARE_FRAME_MANAGER_H_ |
| |
| #include <list> |
| #include <set> |
| |
| #include "base/basictypes.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/shared_memory.h" |
| #include "base/memory/weak_ptr.h" |
| #include "cc/output/software_frame_data.h" |
| #include "cc/resources/single_release_callback.h" |
| #include "cc/resources/texture_mailbox.h" |
| #include "content/browser/renderer_host/renderer_frame_manager.h" |
| #include "content/common/content_export.h" |
| #include "ui/gfx/size.h" |
| |
| namespace content { |
| class SoftwareFrame; |
| |
| class CONTENT_EXPORT SoftwareFrameManagerClient { |
| public: |
| // Called when the memory for the current software frame was freed. |
| virtual void SoftwareFrameWasFreed( |
| uint32 output_surface_id, unsigned frame_id) = 0; |
| |
| // Called when the SoftwareFrameMemoryManager has requested that the frame |
| // be evicted. Upon receiving this callback, the client should release any |
| // references that it may hold to the current frame, to ensure that its memory |
| // is freed expediently. |
| virtual void ReleaseReferencesToSoftwareFrame() = 0; |
| }; |
| |
| class CONTENT_EXPORT SoftwareFrameManager : public RendererFrameManagerClient { |
| public: |
| explicit SoftwareFrameManager( |
| base::WeakPtr<SoftwareFrameManagerClient> client); |
| virtual ~SoftwareFrameManager(); |
| |
| // Swaps to a new frame from shared memory. This frame is guaranteed to |
| // not be evicted until SwapToNewFrameComplete is called. |
| bool SwapToNewFrame( |
| uint32 output_surface_id, |
| const cc::SoftwareFrameData* frame_data, |
| float frame_device_scale_factor, |
| base::ProcessHandle process_handle); |
| void SwapToNewFrameComplete(bool visible); |
| void SetVisibility(bool visible); |
| bool HasCurrentFrame() const; |
| void DiscardCurrentFrame(); |
| void GetCurrentFrameMailbox( |
| cc::TextureMailbox* mailbox, |
| scoped_ptr<cc::SingleReleaseCallback>* callback); |
| const void* GetCurrentFramePixels() const; |
| gfx::Size GetCurrentFrameSizeInPixels() const; |
| gfx::Size GetCurrentFrameSizeInDIP() const; |
| |
| private: |
| // Called by SoftwareFrameMemoryManager to demand that the current frame |
| // be evicted. |
| virtual void EvictCurrentFrame() OVERRIDE; |
| |
| base::WeakPtr<SoftwareFrameManagerClient> client_; |
| |
| // This holds the current software framebuffer. |
| scoped_refptr<SoftwareFrame> current_frame_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SoftwareFrameManager); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_SOFTWARE_FRAME_MANAGER_H_ |