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Side by Side 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: Add missed statics Created 7 years, 2 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef CONTENT_BROWSER_RENDERER_HOST_SOFTWARE_FRAME_MANAGER_H_
6 #define CONTENT_BROWSER_RENDERER_HOST_SOFTWARE_FRAME_MANAGER_H_
7
8 #include "base/basictypes.h"
9 #include "base/memory/ref_counted.h"
10 #include "base/memory/shared_memory.h"
11 #include "base/memory/weak_ptr.h"
12 #include "cc/output/software_frame_data.h"
13 #include "cc/resources/single_release_callback.h"
14 #include "cc/resources/texture_mailbox.h"
15 #include "content/common/content_export.h"
16 #include "ui/gfx/size.h"
17
18 namespace content {
19 class SoftwareFrame;
20 class SoftwareFrameMemoryManager;
21
22 class CONTENT_EXPORT SoftwareFrameManagerClient {
23 public:
24 // Called when the memory for the current software frame was freed.
25 virtual void SoftwareFrameWasFreed(
26 uint32 output_surface_id, unsigned frame_id) = 0;
27
28 // Called when the SoftwareFrameMemoryManager has requested that the frame
29 // be evicted. Upon receiving this callback, the client should release any
30 // references that it may hold to the current frame, to ensure that its memory
31 // is freed expediently.
32 virtual void ReleaseReferencesToSoftwareFrame() = 0;
33 };
34
35 class CONTENT_EXPORT SoftwareFrameManager {
36 public:
37 explicit SoftwareFrameManager(
38 base::WeakPtr<SoftwareFrameManagerClient> client);
39 ~SoftwareFrameManager();
40
41 // Swaps to a new frame from shared memory. This frame is guaranteed to
42 // not be evicted until SwapToNewFrameComplete is called.
43 bool SwapToNewFrame(
44 uint32 output_surface_id,
45 const cc::SoftwareFrameData* frame_data,
46 float frame_device_scale_factor,
47 base::ProcessHandle process_handle);
48 void SwapToNewFrameComplete(bool visible);
49 void SetVisibility(bool visible);
50 bool HasCurrentFrame() const;
51 void DiscardCurrentFrame();
52 void GetCurrentFrameMailbox(
53 cc::TextureMailbox* mailbox,
54 scoped_ptr<cc::SingleReleaseCallback>* callback);
55 const void* GetCurrentFramePixels() const;
56 gfx::Size GetCurrentFrameSizeInPixels() const;
57 gfx::Size GetCurrentFrameSizeInDIP() const;
58
59 private:
60 friend class SoftwareFrameMemoryManager;
61
62 // Called by SoftwareFrameMemoryManager to demand that the current frame
63 // be evicted.
64 void EvictCurrentFrame();
65
66 base::WeakPtr<SoftwareFrameManagerClient> client_;
67
68 // This holds the current software framebuffer.
69 scoped_refptr<SoftwareFrame> current_frame_;
70
71 DISALLOW_COPY_AND_ASSIGN(SoftwareFrameManager);
72 };
73
74 } // namespace content
75
76 #endif // CONTENT_BROWSER_RENDERER_HOST_SOFTWARE_FRAME_MANAGER_H_
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