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Unified Diff: content/browser/renderer_host/software_frame_manager.h

Issue 25942002: Make software compositing work on Mac. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Fix windows resolve Created 7 years, 2 months ago
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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
--- /dev/null
+++ b/content/browser/renderer_host/software_frame_manager.h
@@ -0,0 +1,105 @@
+// 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_
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