remoting/client/software_video_renderer.h

   1 // Copyright 2014 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 "base/memory/weak_ptr.h"
  11 #include "base/threading/thread_checker.h"
  12 #include "remoting/client/chromoting_stats.h"
  13 #include "remoting/client/video_renderer.h"
  14 #include "remoting/protocol/video_stub.h"
  15 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
  16
  17 namespace base {
  18 class SingleThreadTaskRunner;
  19 }  // namespace base
  20
  21 namespace webrtc {
  22 class DesktopFrame;
  23 }  // namespace webrtc;
  24
  25 namespace remoting {
  26
  27 class ChromotingStats;
  28 class FrameConsumer;
  29 class VideoDecoder;
  30
  31 // Implementation of VideoRenderer interface that decodes frame on CPU (on a
  32 // decode thread) and then passes decoded frames to a FrameConsumer.
  33 class SoftwareVideoRenderer : public VideoRenderer,
  34                               public protocol::VideoStub {
  35  public:
  36   // Creates an update decoder on |main_task_runner_| and |decode_task_runner_|,
  37   // outputting to |consumer|. The |main_task_runner_| is responsible for
  38   // receiving and queueing packets. The |decode_task_runner_| is responsible
  39   // for decoding the video packets.
  40   SoftwareVideoRenderer(
  41       scoped_refptr<base::SingleThreadTaskRunner> decode_task_runner,
  42       FrameConsumer* consumer);
  43   ~SoftwareVideoRenderer() override;
  44
  45   // VideoRenderer interface.
  46   void OnSessionConfig(const protocol::SessionConfig& config) override;
  47   ChromotingStats* GetStats() override;
  48   protocol::VideoStub* GetVideoStub() override;
  49
  50   // protocol::VideoStub interface.
  51   void ProcessVideoPacket(scoped_ptr<VideoPacket> packet,
  52                           const base::Closure& done) override;
  53
  54  private:
  55   void RenderFrame(base::TimeTicks decode_start_time,
  56                  const base::Closure& done,
  57                  scoped_ptr<webrtc::DesktopFrame> frame);
  58   void OnFrameRendered(base::TimeTicks paint_start_time,
  59                        const base::Closure& done);
  60
  61   scoped_refptr<base::SingleThreadTaskRunner> decode_task_runner_;
  62   FrameConsumer* consumer_;
  63
  64   scoped_ptr<VideoDecoder> decoder_;
  65
  66   webrtc::DesktopSize source_size_;
  67   webrtc::DesktopVector source_dpi_;
  68
  69   ChromotingStats stats_;
  70
  71   base::ThreadChecker thread_checker_;
  72
  73   base::WeakPtrFactory<SoftwareVideoRenderer> weak_factory_;
  74
  75   DISALLOW_COPY_AND_ASSIGN(SoftwareVideoRenderer);
  76 };
  77
  78 }  // namespace remoting
  79
  80 #endif  // REMOTING_CLIENT_SOFTWARE_VIDEO_RENDERER_H_