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MultiSession.h
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28 
29 #ifndef TASK_MULTI_SESSION_H
30 #define TASK_MULTI_SESSION_H
31 
32 #include <list>
33 
34 #include <Argus/Argus.h>
35 
36 #include "ITask.h"
37 #include "Util.h"
38 #include "UniquePointer.h"
39 #include "IObserver.h"
40 #include "TrackedUniqueObject.h"
41 
42 namespace ArgusSamples
43 {
44 
45 class SessionPerfTracker;
46 
47 /**
48  * This task creates one session for each available sensor
49  */
50 class TaskMultiSession : public ITask, public IObserver
51 {
52 public:
54  virtual ~TaskMultiSession();
55 
56  /** @name ITask methods */
57  /**@{*/
58  virtual bool initialize();
59  virtual bool shutdown();
60  virtual bool start();
61  virtual bool stop();
62  /**@}*/
63 
64 private:
65  bool m_initialized; ///< set if initialized
66  bool m_running; ///< set if preview is running
67  bool m_prevRunning; ///< set if was running before the sensorModeValid is set to false
68 
69  /**
70  * For each device there is one session with a request. Each request outputs to a stream which
71  * is rendered.
72  */
73  class Session
74  {
75  public:
76  Session();
77  ~Session();
78 
79  bool shutdown();
80  bool start();
81  bool stop();
82  bool initialize(uint32_t deviceIndex);
83 
86  Argus::UniqueObj<Argus::OutputStream> m_outputStream; ///< Argus output stream
87 
88  UniquePointer<SessionPerfTracker> m_perfTracker;
89  };
90 
91  std::list<Session*> m_sessions;
92 
93  bool shutdownSessions();
94 
95  /**
96  * Callback when the sensorModeValid is changed.
97  */
98  bool onSensorModeValidChanged(const Observed &source);
99 
100  /**
101  * Restart when sensor mode or output size changes
102  */
103  bool restartStreams(const Observed &source);
104 };
105 
106 }; // namespace ArgusSamples
107 
108 #endif // TASK_MULTI_SESSION_H