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/threading/thread_checker.h"
  11 #include "media/cast/logging/raw_event_subscriber.h"
  12
  13 namespace media {
  14 namespace cast {
  15
  16 // RawEventSubscriber implementation that records all incoming raw events
  17 // in std::vector's.
  18 // The user of this class can call the GetXXXEventsAndReset functions to get
  19 // list of events that have acccumulated since last inovcation.
  20 class SimpleEventSubscriber : public RawEventSubscriber {
  21  public:
  22   SimpleEventSubscriber();
  23
  24   virtual ~SimpleEventSubscriber();
  25
  26   // RawEventSubscriber implementations.
  27   virtual void OnReceiveFrameEvent(const FrameEvent& frame_event) OVERRIDE;
  28   virtual void OnReceivePacketEvent(const PacketEvent& packet_event) OVERRIDE;
  29   virtual void OnReceiveGenericEvent(const GenericEvent& generic_event)
  30       OVERRIDE;
  31
  32   // Assigns frame events received so far to |frame_events| and clears them
  33   // from this object.
  34   void GetFrameEventsAndReset(std::vector<FrameEvent>* frame_events);
  35
  36   // Assigns packet events received so far to |packet_events| and clears them
  37   // from this object.
  38   void GetPacketEventsAndReset(std::vector<PacketEvent>* packet_events);
  39
  40   // Assigns generic events received so far to |generic_events| and clears them
  41   // from this object.
  42   void GetGenericEventsAndReset(std::vector<GenericEvent>* generic_events);
  43
  44  private:
  45   std::vector<FrameEvent> frame_events_;
  46   std::vector<PacketEvent> packet_events_;
  47   std::vector<GenericEvent> generic_events_;
  48
  49   // All functions must be called on the main thread.
  50   base::ThreadChecker thread_checker_;
  51
  52   DISALLOW_COPY_AND_ASSIGN(SimpleEventSubscriber);
  53 };
  54
  55 }  // namespace cast
  56 }  // namespace media
  57
  58 #endif  // MEDIA_CAST_LOGGING_SIMPLE_EVENT_SUBSCRIBER_H_