1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "chre/core/init.h"
18 #include "chre/core/event.h"
19 #include "chre/core/event_loop.h"
20 #include "chre/core/event_loop_manager.h"
21 #include "chre/core/nanoapp.h"
22 #include "chre/core/static_nanoapps.h"
23 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
24 #include "chre/platform/platform_audio.h"
25 #endif // CHRE_AUDIO_SUPPORT_ENABLED
26 #include "chre/platform/context.h"
27 #include "chre/platform/fatal_error.h"
28 #include "chre/platform/linux/platform_log.h"
29 #include "chre/platform/log.h"
30 #include "chre/platform/system_timer.h"
31 #include "chre/util/time.h"
32
33 #include <tclap/CmdLine.h>
34 #include <csignal>
35 #include <thread>
36
37 using chre::EventLoopManagerSingleton;
38 using chre::Milliseconds;
39
40 //! A description of the simulator.
41 constexpr char kSimDescription[] =
42 "A simulation environment for the Context Hub Runtime Environment (CHRE)";
43
44 //! The version of the simulator. This is not super important but is assigned by
45 //! rules of semantic versioning.
46 constexpr char kSimVersion[] = "0.1.0";
47
48 namespace {
49
signalHandler(int sig)50 extern "C" void signalHandler(int sig) {
51 (void)sig;
52 LOGI("Stop request received");
53 EventLoopManagerSingleton::get()->getEventLoop().stop();
54 }
55
56 } // namespace
57
main(int argc,char ** argv)58 int main(int argc, char **argv) {
59 try {
60 // Parse command-line arguments.
61 TCLAP::CmdLine cmd(kSimDescription, ' ', kSimVersion);
62 TCLAP::SwitchArg noStaticNanoappsArg("", "no_static_nanoapps",
63 "disable running static nanoapps", cmd,
64 false);
65 TCLAP::MultiArg<std::string> nanoappsArg(
66 "", "nanoapp", "nanoapp shared object to load and execute", false,
67 "path", cmd);
68 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
69 TCLAP::ValueArg<std::string> audioFileArg(
70 "", "audio_file", "WAV file to open for audio simulation", false, "",
71 "path", cmd);
72 TCLAP::ValueArg<double> minAudioBufSizeArg(
73 "", "min_audio_buf_size", "min buffer size for audio simulation", false,
74 1.0, "seconds", cmd);
75 TCLAP::ValueArg<double> maxAudioBufSizeArg(
76 "", "max_audio_buf_size", "max buffer size for audio simulation", false,
77 10.0, "seconds", cmd);
78 #endif // CHRE_AUDIO_SUPPORT_ENABLED
79 cmd.parse(argc, argv);
80
81 // Initialize logging.
82 chre::PlatformLogSingleton::init();
83
84 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
85 // Initialize audio sources.
86 if (!audioFileArg.getValue().empty()) {
87 auto audioSource = chre::MakeUnique<chre::AudioSource>(
88 audioFileArg.getValue(), minAudioBufSizeArg.getValue(),
89 maxAudioBufSizeArg.getValue());
90 chre::PlatformAudio::addAudioSource(audioSource);
91 }
92
93 // TODO(P1-d24c82): Add another command line argument that takes a json
94 // configuration to support multiple sources.
95 #endif // CHRE_AUDIO_SUPPORT_ENABLED
96
97 // Initialize the system.
98 chre::init();
99
100 // Register a signal handler.
101 std::signal(SIGINT, signalHandler);
102
103 // Load any static nanoapps and start the event loop.
104 std::thread chreThread([&]() {
105 EventLoopManagerSingleton::get()->lateInit();
106
107 // Load static nanoapps unless they are disabled by a command-line flag.
108 if (!noStaticNanoappsArg.getValue()) {
109 chre::loadStaticNanoapps();
110 }
111
112 // Load dynamic nanoapps specified on the command-line.
113 chre::DynamicVector<chre::UniquePtr<chre::Nanoapp>> dynamicNanoapps;
114 for (const auto &nanoapp : nanoappsArg.getValue()) {
115 dynamicNanoapps.push_back(chre::MakeUnique<chre::Nanoapp>());
116 dynamicNanoapps.back()->loadFromFile(nanoapp);
117 EventLoopManagerSingleton::get()->getEventLoop().startNanoapp(
118 dynamicNanoapps.back());
119 }
120
121 EventLoopManagerSingleton::get()->getEventLoop().run();
122 });
123 chreThread.join();
124
125 chre::deinit();
126 chre::PlatformLogSingleton::deinit();
127 } catch (TCLAP::ExitException) {
128 }
129
130 return 0;
131 }
132