media/cast/logging/simple_event_subscriber.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 MEDIA_CAST_LOGGING_SIMPLE_EVENT_SUBSCRIBER_H_
   6 #define MEDIA_CAST_LOGGING_SIMPLE_EVENT_SUBSCRIBER_H_
   7
   8 #include <vector>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/threading/thread_checker.h"
  12 #include "media/cast/logging/raw_event_subscriber.h"
  13
  14 namespace media {
  15 namespace cast {
  16
  17 // RawEventSubscriber implementation that records all incoming raw events
  18 // in std::vector's.
  19 // The user of this class can call the GetXXXEventsAndReset functions to get
  20 // list of events that have acccumulated since last inovcation.
  21 class SimpleEventSubscriber : public RawEventSubscriber {
  22  public:
  23   SimpleEventSubscriber();
  24
  25   virtual ~SimpleEventSubscriber();
  26
  27   // RawEventSubscriber implementations.
  28   virtual void OnReceiveFrameEvent(const FrameEvent& frame_event) OVERRIDE;
  29   virtual void OnReceivePacketEvent(const PacketEvent& packet_event) OVERRIDE;
  30
  31   // Assigns frame events received so far to |frame_events| and clears them
  32   // from this object.
  33   void GetFrameEventsAndReset(std::vector<FrameEvent>* frame_events);
  34
  35   // Assigns packet events received so far to |packet_events| and clears them
  36   // from this object.
  37   void GetPacketEventsAndReset(std::vector<PacketEvent>* packet_events);
  38
  39  private:
  40   std::vector<FrameEvent> frame_events_;
  41   std::vector<PacketEvent> packet_events_;
  42
  43   // All functions must be called on the main thread.
  44   base::ThreadChecker thread_checker_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(SimpleEventSubscriber);
  47 };
  48
  49 }  // namespace cast
  50 }  // namespace media
  51
  52 #endif  // MEDIA_CAST_LOGGING_SIMPLE_EVENT_SUBSCRIBER_H_