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| 1 // Copyright (c) 2012 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_SOFTWARE_VIDEO_RENDERER_H_ |
| 6 #define REMOTING_CLIENT_SOFTWARE_VIDEO_RENDERER_H_ |
| 7 |
| 8 #include "base/memory/ref_counted.h" |
| 9 #include "base/memory/scoped_ptr.h" |
| 10 #include "remoting/client/chromoting_stats.h" |
| 11 #include "remoting/client/frame_consumer_proxy.h" |
| 12 #include "remoting/client/frame_producer.h" |
| 13 #include "remoting/client/video_renderer.h" |
| 14 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h" |
| 15 |
| 16 namespace base { |
| 17 class SingleThreadTaskRunner; |
| 18 } // namespace base |
| 19 |
| 20 namespace remoting { |
| 21 |
| 22 class ChromotingStats; |
| 23 |
| 24 // Implementation of VideoRenderer interface that decodes frame on CPU (on a |
| 25 // decode thread) and then passes decoded frames to a FrameConsumer. |
| 26 // FrameProducer methods can be called on any thread. All other methods must be |
| 27 // called on the main thread. Owned must ensure that this class outlives |
| 28 // FrameConsumer (which calls FrameProducer interface). |
| 29 class SoftwareVideoRenderer : public VideoRenderer, |
| 30 public FrameProducer, |
| 31 public base::NonThreadSafe { |
| 32 public: |
| 33 // Creates an update decoder on |main_task_runner_| and |decode_task_runner_|, |
| 34 // outputting to |consumer|. The |main_task_runner_| is responsible for |
| 35 // receiving and queueing packets. The |decode_task_runner_| is responsible |
| 36 // for decoding the video packets. |
| 37 // TODO(wez): Replace the ref-counted proxy with an owned FrameConsumer. |
| 38 SoftwareVideoRenderer( |
| 39 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, |
| 40 scoped_refptr<base::SingleThreadTaskRunner> decode_task_runner, |
| 41 scoped_refptr<FrameConsumerProxy> consumer); |
| 42 virtual ~SoftwareVideoRenderer(); |
| 43 |
| 44 // VideoRenderer implementation. |
| 45 virtual void Initialize(const protocol::SessionConfig& config) OVERRIDE; |
| 46 virtual ChromotingStats* GetStats() OVERRIDE; |
| 47 virtual void ProcessVideoPacket(scoped_ptr<VideoPacket> packet, |
| 48 const base::Closure& done) OVERRIDE; |
| 49 |
| 50 // FrameProducer implementation. These methods may be called before we are |
| 51 // Initialize()d, or we know the source screen size. These methods may be |
| 52 // called on any thread. |
| 53 // |
| 54 // TODO(sergeyu): On Android a separate display thread is used for drawing. |
| 55 // FrameConsumer calls FrameProducer on that thread. Can we avoid having a |
| 56 // separate display thread? E.g. can we do everything on the decode thread? |
| 57 virtual void DrawBuffer(webrtc::DesktopFrame* buffer) OVERRIDE; |
| 58 virtual void InvalidateRegion(const webrtc::DesktopRegion& region) OVERRIDE; |
| 59 virtual void RequestReturnBuffers(const base::Closure& done) OVERRIDE; |
| 60 virtual void SetOutputSizeAndClip( |
| 61 const webrtc::DesktopSize& view_size, |
| 62 const webrtc::DesktopRect& clip_area) OVERRIDE; |
| 63 |
| 64 private: |
| 65 class Core; |
| 66 |
| 67 // Callback method when a VideoPacket is processed. |decode_start| contains |
| 68 // the timestamp when the packet will start to be processed. |
| 69 void OnPacketDone(base::Time decode_start, const base::Closure& done); |
| 70 |
| 71 scoped_refptr<base::SingleThreadTaskRunner> decode_task_runner_; |
| 72 scoped_ptr<Core> core_; |
| 73 |
| 74 ChromotingStats stats_; |
| 75 |
| 76 // Keep track of the most recent sequence number bounced back from the host. |
| 77 int64 latest_sequence_number_; |
| 78 |
| 79 base::WeakPtrFactory<SoftwareVideoRenderer> weak_factory_; |
| 80 |
| 81 DISALLOW_COPY_AND_ASSIGN(SoftwareVideoRenderer); |
| 82 }; |
| 83 |
| 84 } // namespace remoting |
| 85 |
| 86 #endif // REMOTING_CLIENT_SOFTWARE_VIDEO_RENDERER_H_ |
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