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MultiSession.h
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1 /*
2 * Copyright (c) 2016-2017, NVIDIA CORPORATION. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of NVIDIA CORPORATION nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
24 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
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:
54 TaskMultiSession();
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
85 TrackedUniqueObj<Argus::CaptureSession> m_session; ///< Argus session
86 TrackedUniqueObj<Argus::Request> m_request; ///< Argus request
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