remoting/client/plugin/pepper_video_renderer_2d.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_PLUGIN_PEPPER_VIDEO_RENDERER_2D_H_
   6 #define REMOTING_CLIENT_PLUGIN_PEPPER_VIDEO_RENDERER_2D_H_
   7
   8 #include <list>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_vector.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "base/threading/thread_checker.h"
  15 #include "ppapi/cpp/graphics_2d.h"
  16 #include "ppapi/cpp/image_data.h"
  17 #include "ppapi/cpp/point.h"
  18 #include "ppapi/cpp/view.h"
  19 #include "ppapi/utility/completion_callback_factory.h"
  20 #include "remoting/client/frame_consumer.h"
  21 #include "remoting/client/plugin/pepper_video_renderer.h"
  22 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
  23 #include "third_party/webrtc/modules/desktop_capture/desktop_region.h"
  24
  25 namespace base {
  26 class ScopedClosureRunner;
  27 }  // namespace base
  28
  29 namespace webrtc {
  30 class DesktopFrame;
  31 class SharedDesktopFrame;
  32 }  // namespace webrtc
  33
  34 namespace remoting {
  35
  36 class SoftwareVideoRenderer;
  37
  38 // Video renderer that wraps SoftwareVideoRenderer and displays it using Pepper
  39 // 2D graphics API.
  40 class PepperVideoRenderer2D : public PepperVideoRenderer,
  41                               public FrameConsumer {
  42  public:
  43   PepperVideoRenderer2D();
  44   ~PepperVideoRenderer2D() override;
  45
  46   // PepperVideoRenderer interface.
  47   bool Initialize(pp::Instance* instance,
  48                   const ClientContext& context,
  49                   EventHandler* event_handler,
  50                   protocol::PerformanceTracker* perf_tracker) override;
  51   void OnViewChanged(const pp::View& view) override;
  52   void EnableDebugDirtyRegion(bool enable) override;
  53
  54   // VideoRenderer interface.
  55   void OnSessionConfig(const protocol::SessionConfig& config) override;
  56   protocol::VideoStub* GetVideoStub() override;
  57
  58  private:
  59   // FrameConsumer implementation.
  60   scoped_ptr<webrtc::DesktopFrame> AllocateFrame(
  61       const webrtc::DesktopSize& size) override;
  62   void DrawFrame(scoped_ptr<webrtc::DesktopFrame> frame,
  63                  const base::Closure& done) override;
  64   PixelFormat GetPixelFormat() override;
  65
  66
  67   void Flush();
  68   void OnFlushDone(int result);
  69
  70   // Parameters passed to Initialize().
  71   pp::Instance* instance_ = nullptr;
  72   EventHandler* event_handler_ = nullptr;
  73
  74   pp::Graphics2D graphics2d_;
  75
  76   scoped_ptr<SoftwareVideoRenderer> software_video_renderer_;
  77
  78   // View size in output pixels.
  79   webrtc::DesktopSize view_size_;
  80
  81   // Size of the most recent source frame in pixels.
  82   webrtc::DesktopSize source_size_;
  83
  84   // Resolution of the most recent source frame dots-per-inch.
  85   webrtc::DesktopVector source_dpi_;
  86
  87   // Shape of the most recent source frame.
  88   scoped_ptr<webrtc::DesktopRegion> source_shape_;
  89
  90   // Done callbacks for the frames that have been painted but not flushed.
  91   ScopedVector<base::ScopedClosureRunner> pending_frames_done_callbacks_;
  92
  93   // Done callbacks for the frames that are currently being flushed.
  94   ScopedVector<base::ScopedClosureRunner> flushing_frames_done_callbacks_;
  95
  96   // True if there paint operations that need to be flushed.
  97   bool need_flush_ = false;
  98
  99   // True if there is already a Flush() pending on the Graphics2D context.
 100   bool flush_pending_ = false;
 101
 102   // True after the first call to DrawFrame().
 103   bool frame_received_ = false;
 104
 105   // True if dirty regions are to be sent to |event_handler_| for debugging.
 106   bool debug_dirty_region_ = false;
 107
 108   base::ThreadChecker thread_checker_;
 109
 110   pp::CompletionCallbackFactory<PepperVideoRenderer2D> callback_factory_;
 111   base::WeakPtrFactory<PepperVideoRenderer2D> weak_factory_;
 112
 113   DISALLOW_COPY_AND_ASSIGN(PepperVideoRenderer2D);
 114 };
 115
 116 }  // namespace remoting
 117
 118 #endif  // REMOTING_CLIENT_PLUGIN_PEPPER_VIDEO_RENDERER_2D_H_