Index: content/browser/renderer_host/software_frame_manager.h |
diff --git a/content/browser/renderer_host/software_frame_manager.h b/content/browser/renderer_host/software_frame_manager.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..d7f186f41ff8457496f77aef32c55f18cf0b88cf |
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+++ b/content/browser/renderer_host/software_frame_manager.h |
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+// 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/singleton.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/common/content_export.h" |
+#include "ui/gfx/size.h" |
+ |
+namespace content { |
+class SoftwareFrame; |
+class SoftwareFrameMemoryManager; |
+ |
+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: |
+ explicit SoftwareFrameManager( |
+ base::WeakPtr<SoftwareFrameManagerClient> client); |
+ ~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: |
+ friend class SoftwareFrameMemoryManager; |
+ |
+ // Called by SoftwareFrameMemoryManager to demand that the current frame |
+ // be evicted. |
+ void EvictCurrentFrame(); |
+ |
+ base::WeakPtr<SoftwareFrameManagerClient> client_; |
+ |
+ // This holds the current software framebuffer. |
+ scoped_refptr<SoftwareFrame> current_frame_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(SoftwareFrameManager); |
+}; |
+ |
+class CONTENT_EXPORT SoftwareFrameMemoryManager { |
+ public: |
+ static SoftwareFrameMemoryManager* GetInstance(); |
+ |
+ void AddFrame(SoftwareFrameManager*, bool visible); |
+ void RemoveFrame(SoftwareFrameManager*); |
+ void SetFrameVisibility(SoftwareFrameManager*, bool visible); |
+ |
+ size_t max_number_of_saved_frames() const { |
+ return max_number_of_saved_frames_; |
+ } |
+ |
+ private: |
+ SoftwareFrameMemoryManager(); |
+ ~SoftwareFrameMemoryManager(); |
+ void CullHiddenFrames(); |
+ friend struct DefaultSingletonTraits<SoftwareFrameMemoryManager>; |
+ |
+ std::set<SoftwareFrameManager*> visible_frames_; |
+ std::list<SoftwareFrameManager*> hidden_frames_; |
+ size_t max_number_of_saved_frames_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(SoftwareFrameMemoryManager); |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_BROWSER_RENDERER_HOST_SOFTWARE_FRAME_MANAGER_H_ |