Argus Camera Sample Argus Camera Sample

- Main Page
- Related Pages
- Namespaces
- Classes
- Files

- File List
- File Members

All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
MultiSession.cpp
Go to the documentation of this file.
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 #include <sstream>
30
31 #include "MultiSession.h"
32 #include "Composer.h"
33 #include "Dispatcher.h"
34 #include "Error.h"
35 #include "UniquePointer.h"
36 #include "PerfTracker.h"
37 #include <algorithm>
38
39 namespace ArgusSamples
40 {
41
42 TaskMultiSession::TaskMultiSession()
43 : m_initialized(false)
44 , m_running(false)
45 , m_prevRunning(false)
46 {
47 }
48
49 TaskMultiSession::~TaskMultiSession()
50 {
51 shutdown();
52 }
53
54 TaskMultiSession::Session::Session()
55 {
56 }
57
58 TaskMultiSession::Session::~Session()
59 {
60 shutdown();
61 }
62
63 bool TaskMultiSession::Session::initialize(uint32_t deviceIndex)
64 {
65 // create the perf tracker
66 m_perfTracker.reset(new SessionPerfTracker());
67 if (!m_perfTracker)
68 ORIGINATE_ERROR("Out of memory");
69
70 PROPAGATE_ERROR(m_perfTracker->onEvent(SESSION_EVENT_TASK_START));
71
72 Composer &composer = Composer::getInstance();
73 Dispatcher &dispatcher = Dispatcher::getInstance();
74
75 // create the session using the current device index
76 PROPAGATE_ERROR(dispatcher.createSession(m_session, deviceIndex));
77 PROPAGATE_ERROR(m_perfTracker->setSession(m_session.get()));
78
79 // create the request
80 PROPAGATE_ERROR(dispatcher.createRequest(m_request, Argus::CAPTURE_INTENT_STILL_CAPTURE,
81 m_session.get()));
82
83 // Create the preview stream
84 PROPAGATE_ERROR(dispatcher.createOutputStream(m_request.get(), false, m_outputStream,
85 m_session.get()));
86
87 // bind the preview stream to the composer
88 Argus::IEGLOutputStream *iEGLOutputStream =
89 Argus::interface_cast<Argus::IEGLOutputStream>(m_outputStream.get());
90 if (!iEGLOutputStream)
91 ORIGINATE_ERROR("Failed to get IEGLOutputStream interface");
92
93 // Bind the stream to the composer
94 PROPAGATE_ERROR(composer.bindStream(iEGLOutputStream->getEGLStream()));
95
96 const Argus::Size2D<uint32_t> streamSize = iEGLOutputStream->getResolution();
97 PROPAGATE_ERROR(composer.setStreamAspectRatio(iEGLOutputStream->getEGLStream(),
98 (float)streamSize.width() / (float)streamSize.height()));
99
100 // Enable the output stream
101 PROPAGATE_ERROR(dispatcher.enableOutputStream(m_request.get(), m_outputStream.get()));
102
103 return true;
104 }
105
106 bool TaskMultiSession::Session::start()
107 {
108 Composer &composer = Composer::getInstance();
109
110 // activate the streams and populate the burst request array
111 PROPAGATE_ERROR(composer.setStreamActive(
112 Argus::interface_cast<Argus::IEGLOutputStream>(m_outputStream)->getEGLStream(), true));
113
114 // start the repeating burst request for the preview
115 PROPAGATE_ERROR(m_perfTracker->onEvent(SESSION_EVENT_ISSUE_CAPTURE));
116 PROPAGATE_ERROR(Dispatcher::getInstance().startRepeat(m_request.get(), m_session.get()));
117
118 return true;
119 }
120
121 bool TaskMultiSession::Session::stop()
122 {
123 PROPAGATE_ERROR(m_perfTracker->onEvent(SESSION_EVENT_CLOSE_REQUESTED));
124
125 Dispatcher &dispatcher = Dispatcher::getInstance();
126 Composer &composer = Composer::getInstance();
127
128 PROPAGATE_ERROR(dispatcher.stopRepeat(m_session.get()));
129 PROPAGATE_ERROR(composer.setStreamActive(
130 Argus::interface_cast<Argus::IEGLOutputStream>(m_outputStream)->getEGLStream(), false));
131 PROPAGATE_ERROR(dispatcher.waitForIdle(m_session.get()));
132 PROPAGATE_ERROR(m_perfTracker->onEvent(SESSION_EVENT_FLUSH_DONE));
133
134 return true;
135 }
136
137 bool TaskMultiSession::Session::shutdown()
138 {
139 if (m_request)
140 {
141 Dispatcher &dispatcher = Dispatcher::getInstance();
142 Composer &composer = Composer::getInstance();
143
144 if (m_outputStream)
145 {
146 // destroy the producer
147 PROPAGATE_ERROR_CONTINUE(dispatcher.disableOutputStream(m_request.get(),
148 m_outputStream.get()));
149
150 Argus::IEGLOutputStream *iEGLOutputStream =
151 Argus::interface_cast<Argus::IEGLOutputStream>(m_outputStream);
152 if (!iEGLOutputStream)
153 REPORT_ERROR("Failed to get IEGLOutputStream interface");
154
155 // disconnect the EGL stream
156 iEGLOutputStream->disconnect();
157
158 // unbind the EGL stream from the composer
159 PROPAGATE_ERROR_CONTINUE(composer.unbindStream(iEGLOutputStream->getEGLStream()));
160
161 m_outputStream.reset();
162 }
163
164 // destroy the request
165 PROPAGATE_ERROR_CONTINUE(m_request.reset());
166 }
167
168 PROPAGATE_ERROR(m_perfTracker->onEvent(SESSION_EVENT_CLOSE_DONE));
169
170 // Destroy the session
171 m_session.reset();
172
173 return true;
174 }
175
176 bool TaskMultiSession::initialize()
177 {
178 if (m_initialized)
179 return true;
180
181 PROPAGATE_ERROR(Dispatcher::getInstance().m_sensorModeValid.registerObserver(this,
182 static_cast<IObserver::CallbackFunction>(&TaskMultiSession::onSensorModeValidChanged)));
183 PROPAGATE_ERROR(Dispatcher::getInstance().m_outputSize.registerObserver(this,
184 static_cast<IObserver::CallbackFunction>(&TaskMultiSession::restartStreams)));
185
186 m_initialized = true;
187
188 return true;
189 }
190
191 bool TaskMultiSession::shutdown()
192 {
193 if (!m_initialized)
194 return true;
195
196 // stop the preview
197 PROPAGATE_ERROR(stop());
198
199 PROPAGATE_ERROR_CONTINUE(Dispatcher::getInstance().m_outputSize.unregisterObserver(this,
200 static_cast<IObserver::CallbackFunction>(&TaskMultiSession::restartStreams)));
201 PROPAGATE_ERROR_CONTINUE(Dispatcher::getInstance().m_sensorModeValid.unregisterObserver(this,
202 static_cast<IObserver::CallbackFunction>(&TaskMultiSession::onSensorModeValidChanged)));
203
204 m_initialized = false;
205
206 return true;
207 }
208
209 bool TaskMultiSession::shutdownSessions()
210 {
211 if (!m_sessions.empty())
212 {
213 // shutdown the sessions
214 for (std::list<Session*>::iterator it = m_sessions.begin(); it != m_sessions.end(); ++it)
215 {
216 Session *session = *it;
217 PROPAGATE_ERROR_CONTINUE(session->shutdown());
218 delete session;
219 }
220 m_sessions.clear();
221 }
222
223 return true;
224 }
225
226 bool TaskMultiSession::start()
227 {
228 if (m_running)
229 return true;
230
231 Dispatcher &dispatcher = Dispatcher::getInstance();
232
233 if (m_sessions.empty())
234 {
235 const uint32_t deviceCount = dispatcher.getDeviceCount();
236
237 if (deviceCount == 0)
238 ORIGINATE_ERROR("No camera devices found");
239
240 std::vector<uint32_t> devices;
241
242 if (m_multiDevices.get().size() > 0)
243 {
244 // m_multiDevices will not be changed by UI
245 // it has special validation requirements, so validate m_multiDevices here
246 devices = m_multiDevices.get();
247 std::sort(devices.begin(), devices.end());
248
249 // compare with deviceCount
250 if (devices.back() >= deviceCount)
251 ORIGINATE_ERROR("index %u is out of range [0 - %u)", devices.back(), deviceCount);
252
253 // check no duplicate
254 std::vector<uint32_t>::iterator it = std::unique(devices.begin(), devices.end());
255 if (it != devices.end())
256 ORIGINATE_ERROR("duplicated indexes");
257 }
258 else
259 {
260 // use all available camera devices
261 for (uint32_t deviceIndex = 0; deviceIndex < deviceCount; ++deviceIndex)
262 {
263 devices.push_back(deviceIndex);
264 }
265 }
266
267 // create a request and streams for each session
268 for (std::vector<uint32_t>::iterator it = devices.begin(); it != devices.end(); ++it)
269 {
270 UniquePointer<Session> session(new Session);
271
272 if (!session)
273 ORIGINATE_ERROR("Out of memory");
274
275 PROPAGATE_ERROR(session->initialize(*it));
276
277 m_sessions.push_back(session.release());
278 }
279 }
280
281 // start the sessions
282 for (std::list<Session*>::iterator it = m_sessions.begin(); it != m_sessions.end(); ++it)
283 {
284 Session *session = *it;
285 PROPAGATE_ERROR(session->start());
286 }
287
288 m_running = true;
289
290 return true;
291 }
292
293 bool TaskMultiSession::stop()
294 {
295 if (!m_running)
296 return true;
297
298 for (std::list<Session*>::iterator it = m_sessions.begin(); it != m_sessions.end(); ++it)
299 {
300 Session *session = *it;
301 PROPAGATE_ERROR(session->stop());
302 }
303
304 PROPAGATE_ERROR(shutdownSessions());
305
306 m_running = false;
307
308 return true;
309 }
310
311 bool TaskMultiSession::onSensorModeValidChanged(const Observed &source)
312 {
313 const bool isTrue = static_cast<const Value<bool>&>(source).get();
314
315 if (!isTrue)
316 {
317 m_prevRunning = m_running;
318 if (m_running)
319 {
320 PROPAGATE_ERROR(stop());
321 }
322 }
323 else if (m_prevRunning)
324 {
325 m_prevRunning = false;
326 PROPAGATE_ERROR(start());
327 }
328
329 return true;
330 }
331
332 bool TaskMultiSession::restartStreams(__attribute__((unused)) const Observed &source)
333 {
334 if (m_running)
335 {
336 PROPAGATE_ERROR(stop());
337 PROPAGATE_ERROR(start());
338 }
339 return true;
340 }
341
342 }; // namespace ArgusSamples