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93 lines
2.7 KiB
93 lines
2.7 KiB
/**
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <binder/IPCThreadState.h>
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#include <binder/IServiceManager.h>
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#include <media/AudioSystem.h>
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#include "../includes/common.h"
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using namespace android;
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#define MAX_NUMBER_OF_AUDIO_SESSIONS 1024
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#define MAX_NUMBER_OF_THREADS 5
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#define MAX_NUMBER_OF_ACQUIRE_SESSION_THREADS 2
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struct pocAudioSessionCtxt {
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audio_session_t audioSession[MAX_NUMBER_OF_AUDIO_SESSIONS];
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volatile bool startThread;
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};
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static void *acquireSoundTriggerSessionThread(void *arg) {
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int i = 0;
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pocAudioSessionCtxt *ctxt = (pocAudioSessionCtxt *)arg;
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if (!ctxt) {
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return nullptr;
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}
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time_t currentTime = start_timer();
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while (timer_active(currentTime)) {
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if (ctxt->startThread) {
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audio_io_handle_t ioHandle = 0;
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audio_devices_t device = AUDIO_DEVICE_NONE;
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AudioSystem::acquireSoundTriggerSession(&(ctxt->audioSession[++i]), &ioHandle, &device);
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if (i >= MAX_NUMBER_OF_AUDIO_SESSIONS) {
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i = 0;
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}
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}
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}
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return nullptr;
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}
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static void *releaseSoundTriggerSessionThread(void *arg) {
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int i = 0;
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pocAudioSessionCtxt *ctxt = (pocAudioSessionCtxt *)arg;
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if (!ctxt) {
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return nullptr;
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}
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time_t currentTime = start_timer();
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while (timer_active(currentTime)) {
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if (ctxt->startThread) {
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AudioSystem::releaseSoundTriggerSession(ctxt->audioSession[++i]);
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if (i >= MAX_NUMBER_OF_AUDIO_SESSIONS) {
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i = 0;
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}
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}
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}
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return nullptr;
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}
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int main() {
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pocAudioSessionCtxt ctxt;
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pthread_t thread[MAX_NUMBER_OF_THREADS];
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ctxt.startThread = false;
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for (int i = 0; i < MAX_NUMBER_OF_ACQUIRE_SESSION_THREADS; ++i) {
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pthread_create(&thread[i], nullptr, acquireSoundTriggerSessionThread,
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&ctxt);
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}
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for (int i = MAX_NUMBER_OF_ACQUIRE_SESSION_THREADS; i < MAX_NUMBER_OF_THREADS;
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++i) {
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pthread_create(&thread[i], nullptr, releaseSoundTriggerSessionThread,
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&ctxt);
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}
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ctxt.startThread = true;
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for (int i = 0; i < MAX_NUMBER_OF_THREADS; ++i) {
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pthread_join(thread[i], nullptr);
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}
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return EXIT_SUCCESS;
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}
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