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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 #include "Value.h"
42 
43 namespace ArgusSamples
44 {
45 
46 class SessionPerfTracker;
47 
48 /**
49  * This task creates one session for each available sensor
50  */
51 class TaskMultiSession : public ITask, public IObserver
52 {
53 public:
55  virtual ~TaskMultiSession();
56 
57  /** @name ITask methods */
58  /**@{*/
59  virtual bool initialize();
60  virtual bool shutdown();
61  virtual bool start();
62  virtual bool stop();
63  /**@}*/
64 
65 private:
66  bool m_initialized; ///< set if initialized
67  bool m_running; ///< set if preview is running
68  bool m_prevRunning; ///< set if was running before the sensorModeValid is set to false
69 
70  /**
71  * For each device there is one session with a request. Each request outputs to a stream which
72  * is rendered.
73  */
74  class Session
75  {
76  public:
77  Session();
78  ~Session();
79 
80  bool shutdown();
81  bool start();
82  bool stop();
83  bool initialize(uint32_t deviceIndex);
84 
87  Argus::UniqueObj<Argus::OutputStream> m_outputStream; ///< Argus output stream
88 
89  UniquePointer<SessionPerfTracker> m_perfTracker;
90  };
91 
92  std::list<Session*> m_sessions;
93 
94  bool shutdownSessions();
95 
96  /**
97  * Callback when the sensorModeValid is changed.
98  */
99  bool onSensorModeValidChanged(const Observed &source);
100 
101  /**
102  * Restart when output size changes
103  */
104  bool restartStreams(const Observed &source);
105 
106 public:
107  Value<std::vector<uint32_t> > m_multiDevices; ///< multiple devices
108 };
109 
110 }; // namespace ArgusSamples
111 
112 #endif // TASK_MULTI_SESSION_H