/*
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* Copyright (C) 2016 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 "WorkerThread.h"
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#define LOG_NDEBUG 0
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#define LOG_TAG "EmulatedCamera_WorkerThread"
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#include <log/log.h>
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#include <algorithm>
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namespace android {
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WorkerThread::WorkerThread(const char* threadName,
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EmulatedCameraDevice* cameraDevice,
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EmulatedCamera* cameraHAL)
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: Thread(true), // Callbacks may involve Java calls.
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mCameraDevice(cameraDevice),
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mCameraHAL(cameraHAL),
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mRunning(false),
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mThreadName(threadName) {
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}
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status_t WorkerThread::startThread(bool oneBurst) {
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ALOGV("Starting worker thread, oneBurst=%s", oneBurst ? "true" : "false");
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mOneBurst = oneBurst;
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{
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Mutex::Autolock lock(mRunningMutex);
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mRunning = true;
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}
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return run(mThreadName, ANDROID_PRIORITY_URGENT_DISPLAY, 0);
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}
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status_t WorkerThread::stopThread() {
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ALOGV("%s: Stopping worker thread...", __FUNCTION__);
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Mutex::Autolock lock(mRunningMutex);
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mRunning = false;
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mRunningCondition.signal();
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return NO_ERROR;
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}
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status_t WorkerThread::wakeThread() {
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ALOGV("%s: Waking emulated camera device's worker thread...", __FUNCTION__);
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mRunningCondition.signal();
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return NO_ERROR;
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}
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status_t WorkerThread::joinThread() {
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return join();
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}
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status_t WorkerThread::readyToRun()
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{
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status_t res = onThreadStart();
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if (res != NO_ERROR) {
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return res;
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}
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return NO_ERROR;
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}
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bool WorkerThread::threadLoop() {
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if (inWorkerThread() && !mOneBurst) {
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/* Only return true if we're running. If mRunning has been set to false
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* we fall through to ensure that onThreadExit is called. */
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Mutex::Autolock lock(mRunningMutex);
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if (mRunning) {
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return true;
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}
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}
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onThreadExit();
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ALOGV("%s: Exiting thread, mOneBurst=%s",
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__FUNCTION__, mOneBurst ? "true" : "false");
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return false;
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}
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} // namespace android
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