You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
3.6 KiB
109 lines
3.6 KiB
7 months ago
|
/*
|
||
|
|
* Copyright (C) 2016 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef HW_EMULATOR_CAMERA_WORKER_THREAD_H
|
||
|
|
#define HW_EMULATOR_CAMERA_WORKER_THREAD_H
|
||
|
|
|
||
|
|
#include <utils/Thread.h>
|
||
|
|
|
||
|
|
namespace android {
|
||
|
|
|
||
|
|
class EmulatedCamera;
|
||
|
|
class EmulatedCameraDevice;
|
||
|
|
|
||
|
|
class WorkerThread : public Thread {
|
||
|
|
public:
|
||
|
|
WorkerThread(const char* threadName,
|
||
|
|
EmulatedCameraDevice* camera_dev,
|
||
|
|
EmulatedCamera* cameraHAL);
|
||
|
|
virtual ~WorkerThread() {}
|
||
|
|
|
||
|
|
/* Starts the thread
|
||
|
|
* Param:
|
||
|
|
* oneBurst - Controls how many times thread loop should run. If
|
||
|
|
* this parameter is 'true', thread routine will run only once
|
||
|
|
* If this parameter is 'false', thread routine will run until
|
||
|
|
* stopThread method is called. See startWorkerThread for more
|
||
|
|
* info.
|
||
|
|
* Return:
|
||
|
|
* NO_ERROR on success, or an appropriate error status.
|
||
|
|
*/
|
||
|
|
status_t startThread(bool oneBurst);
|
||
|
|
|
||
|
|
/* Stops the thread, this only requests that the thread exits. The method
|
||
|
|
* will return right after the request has been made. Use joinThread to
|
||
|
|
* wait for the thread to exit. */
|
||
|
|
status_t stopThread();
|
||
|
|
|
||
|
|
/* Wake a thread that's currently waiting to timeout or to be awoken */
|
||
|
|
status_t wakeThread();
|
||
|
|
|
||
|
|
/* Join the thread, waits until the thread exits before returning. */
|
||
|
|
status_t joinThread();
|
||
|
|
|
||
|
|
protected:
|
||
|
|
/* Perform whatever work should be done in the worker thread. A subclass
|
||
|
|
* needs to implement this.
|
||
|
|
* Return:
|
||
|
|
* true To continue thread loop, or false to exit the thread loop and
|
||
|
|
* terminate the thread.
|
||
|
|
*/
|
||
|
|
virtual bool inWorkerThread() = 0;
|
||
|
|
|
||
|
|
/* This provides an opportunity for a subclass to perform some operation
|
||
|
|
* when the thread starts. This is run on the newly started thread. If this
|
||
|
|
* returns an error the thread will exit and inWorkerThread will never be
|
||
|
|
* called.
|
||
|
|
*/
|
||
|
|
virtual status_t onThreadStart() { return NO_ERROR; }
|
||
|
|
|
||
|
|
/* This provides an opportunity for a subclass to perform some operation
|
||
|
|
* when the thread exits. This is run on the worker thread. By default this
|
||
|
|
* does nothing.
|
||
|
|
*/
|
||
|
|
virtual void onThreadExit() { }
|
||
|
|
|
||
|
|
/* Containing camera device object. */
|
||
|
|
EmulatedCameraDevice* mCameraDevice;
|
||
|
|
/* The camera HAL from the camera device object */
|
||
|
|
EmulatedCamera* mCameraHAL;
|
||
|
|
|
||
|
|
/* Controls number of times the thread loop runs.
|
||
|
|
* See startThread for more information. */
|
||
|
|
bool mOneBurst;
|
||
|
|
|
||
|
|
/* Running Condition and mutex, use these to sleep the thread, the
|
||
|
|
* supporting functions will use these to signal wakes and exits. */
|
||
|
|
Condition mRunningCondition;
|
||
|
|
Mutex mRunningMutex;
|
||
|
|
bool mRunning;
|
||
|
|
private:
|
||
|
|
/* Overriden base class method.
|
||
|
|
* It is overriden in order to provide one-time initialization just
|
||
|
|
* prior to starting the thread routine.
|
||
|
|
*/
|
||
|
|
status_t readyToRun() final;
|
||
|
|
|
||
|
|
/* Implements abstract method of the base Thread class. */
|
||
|
|
bool threadLoop() final;
|
||
|
|
|
||
|
|
const char* mThreadName;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace android
|
||
|
|
|
||
|
|
#endif // HW_EMULATOR_CAMERA_WORKER_THREAD_H
|