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/event.h"
18 #include "chre/core/event_loop.h"
19 #include "chre/core/event_loop_manager.h"
20 #include "chre/core/init.h"
21 #include "chre/core/nanoapp.h"
22 #include "chre/core/static_nanoapps.h"
23 #include "chre/platform/platform_audio.h"
24 #include "chre/platform/context.h"
25 #include "chre/platform/fatal_error.h"
26 #include "chre/platform/log.h"
27 #include "chre/platform/shared/platform_log.h"
28 #include "chre/platform/system_timer.h"
29 #include "chre/util/time.h"
30
31 #include <csignal>
32 #include <tclap/CmdLine.h>
33 #include <thread>
34
35 using chre::EventLoopManagerSingleton;
36 using chre::Milliseconds;
37
38 //! A description of the simulator.
39 constexpr char kSimDescription[] = "A simulation environment for the Context "
40 "Hub Runtime Environment (CHRE)";
41
42 //! The version of the simulator. This is not super important but is assigned by
43 //! rules of semantic versioning.
44 constexpr char kSimVersion[] = "0.1.0";
45
46 namespace {
47
signalHandler(int sig)48 extern "C" void signalHandler(int sig) {
49 (void) sig;
50 LOGI("Stop request received");
51 EventLoopManagerSingleton::get()->getEventLoop().stop();
52 }
53
54 }
55
main(int argc,char ** argv)56 int main(int argc, char **argv) {
57 try {
58 // Parse command-line arguments.
59 TCLAP::CmdLine cmd(kSimDescription, ' ', kSimVersion);
60 TCLAP::SwitchArg noStaticNanoappsArg("", "no_static_nanoapps",
61 "disable running static nanoapps", cmd, false);
62 TCLAP::MultiArg<std::string> nanoappsArg("", "nanoapp",
63 "nanoapp shared object to load and execute", false, "path", cmd);
64 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
65 TCLAP::ValueArg<std::string> audioFileArg("", "audio_file",
66 "WAV file to open for audio simulation", false, "", "path", cmd);
67 TCLAP::ValueArg<double> minAudioBufSizeArg("", "min_audio_buf_size",
68 "min buffer size for audio simulation", false, 1.0, "seconds", cmd);
69 TCLAP::ValueArg<double> maxAudioBufSizeArg("", "max_audio_buf_size",
70 "max buffer size for audio simulation", false, 10.0, "seconds", cmd);
71 #endif // CHRE_AUDIO_SUPPORT_ENABLED
72 cmd.parse(argc, argv);
73
74 // Initialize logging.
75 chre::PlatformLogSingleton::init();
76
77 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
78 // Initialize audio sources.
79 if (!audioFileArg.getValue().empty()) {
80 auto audioSource = chre::MakeUnique<chre::AudioSource>(
81 audioFileArg.getValue(), minAudioBufSizeArg.getValue(),
82 maxAudioBufSizeArg.getValue());
83 chre::PlatformAudio::addAudioSource(audioSource);
84 }
85
86 // TODO(P1-d24c82): Add another command line argument that takes a json
87 // configuration to support multiple sources.
88 #endif // CHRE_AUDIO_SUPPORT_ENABLED
89
90 // Initialize the system.
91 chre::init();
92
93 // Register a signal handler.
94 std::signal(SIGINT, signalHandler);
95
96 // Load any static nanoapps and start the event loop.
97 std::thread chreThread([&]() {
98 // Load static nanoapps unless they are disabled by a command-line flag.
99 if (!noStaticNanoappsArg.getValue()) {
100 chre::loadStaticNanoapps();
101 }
102
103 // Load dynamic nanoapps specified on the command-line.
104 chre::DynamicVector<chre::UniquePtr<chre::Nanoapp>> dynamicNanoapps;
105 for (const auto& nanoapp : nanoappsArg.getValue()) {
106 dynamicNanoapps.push_back(chre::MakeUnique<chre::Nanoapp>());
107 dynamicNanoapps.back()->loadFromFile(nanoapp);
108 EventLoopManagerSingleton::get()->getEventLoop()
109 .startNanoapp(dynamicNanoapps.back());
110 }
111
112 EventLoopManagerSingleton::get()->getEventLoop().run();
113 });
114 chreThread.join();
115
116 chre::deinit();
117 chre::PlatformLogSingleton::deinit();
118 } catch (TCLAP::ExitException) {}
119
120 return 0;
121 }
122