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1 // Copyright 2016 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 REMOTING_CLIENT_DUAL_BUFFER_FRAME_CONSUMER_H_ | |
6 #define REMOTING_CLIENT_DUAL_BUFFER_FRAME_CONSUMER_H_ | |
7 | |
8 #include "base/callback.h" | |
9 #include "base/macros.h" | |
10 #include "base/memory/ref_counted.h" | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "base/single_thread_task_runner.h" | |
13 #include "base/threading/thread_checker.h" | |
14 #include "remoting/protocol/frame_consumer.h" | |
15 #include "third_party/webrtc/modules/desktop_capture/desktop_region.h" | |
16 | |
17 namespace webrtc { | |
18 class SharedDesktopFrame; | |
19 } | |
Sergey Ulanov
2016/07/20 18:39:26
// namespace webrtc
Yuwei
2016/07/21 00:07:32
Done.
| |
20 | |
21 namespace remoting { | |
22 | |
23 // This class uses dual BasicDesktopFrame buffer to decode all video frames | |
24 // using the underlying video renderer. | |
25 // This class should be used and destroyed on the same thread. If |task_runner| | |
26 // is null |callback| will be run directly upon the stack of DrawFrame, | |
27 // otherwise it will be run on the thread of |task_runner|. | |
28 class DualBufferFrameConsumer : public protocol::FrameConsumer { | |
29 public: | |
30 DualBufferFrameConsumer( | |
31 base::Callback<void(std::unique_ptr<webrtc::DesktopFrame>)> callback, | |
32 scoped_refptr<base::SingleThreadTaskRunner> task_runner, | |
33 PixelFormat format); | |
34 ~DualBufferFrameConsumer() override; | |
35 | |
36 // Feeds the callback on the right thread with a BasicDesktopFrame containing | |
37 // updates from |buffer_0_| and |buffer_1_|. Do nothing if no updates have | |
38 // received yet. | |
39 void RequestFullDesktopFrame(); | |
40 | |
41 // FrameConsumer interface. | |
42 std::unique_ptr<webrtc::DesktopFrame> AllocateFrame( | |
43 const webrtc::DesktopSize& size) override; | |
44 void DrawFrame(std::unique_ptr<webrtc::DesktopFrame> frame, | |
45 const base::Closure& done) override; | |
46 PixelFormat GetPixelFormat() override; | |
47 | |
48 base::WeakPtr<DualBufferFrameConsumer> GetWeakPtr(); | |
49 | |
50 private: | |
51 void RunRenderCallback(std::unique_ptr<webrtc::DesktopFrame> frame, | |
52 const base::Closure& done); | |
53 void OnFrameRendered(const base::Closure& done); | |
54 | |
55 std::unique_ptr<webrtc::SharedDesktopFrame> buffer_0_; | |
56 std::unique_ptr<webrtc::SharedDesktopFrame> buffer_1_; | |
57 webrtc::DesktopRegion buffer_1_mask_; | |
58 int next_buffer_ = 0; | |
59 | |
60 base::Callback<void(std::unique_ptr<webrtc::DesktopFrame>)> callback_; | |
61 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | |
62 PixelFormat pixel_format_; | |
63 base::ThreadChecker thread_checker_; | |
64 base::WeakPtr<DualBufferFrameConsumer> weak_ptr_; | |
65 base::WeakPtrFactory<DualBufferFrameConsumer> weak_factory_; | |
66 | |
67 DISALLOW_COPY_AND_ASSIGN(DualBufferFrameConsumer); | |
68 }; | |
69 | |
70 } // namespace remoting | |
71 #endif // REMOTING_CLIENT_DUAL_BUFFER_FRAME_CONSUMER_H_ | |
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