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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
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:
53 TaskMultiSession();
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
84 TrackedUniqueObj<Argus::CaptureSession> m_session; ///< Argus session
85 TrackedUniqueObj<Argus::Request> m_request; ///< Argus request
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