70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/*
|
|
* Copyright (C) 2022 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.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <atomic>
|
|
#include <memory>
|
|
#include <string>
|
|
#include <thread>
|
|
|
|
#include <android-base/thread_annotations.h>
|
|
#include <fmq/EventFlag.h>
|
|
#include <system/thread_defs.h>
|
|
|
|
#include "effect-impl/EffectContext.h"
|
|
#include "effect-impl/EffectTypes.h"
|
|
|
|
namespace aidl::android::hardware::audio::effect {
|
|
|
|
class EffectThread {
|
|
public:
|
|
virtual ~EffectThread();
|
|
|
|
// called by effect implementation
|
|
RetCode createThread(const std::string& name, int priority = ANDROID_PRIORITY_URGENT_AUDIO);
|
|
RetCode destroyThread();
|
|
RetCode startThread();
|
|
RetCode stopThread();
|
|
RetCode startDraining();
|
|
RetCode finishDraining();
|
|
|
|
// Will call process() in a loop if the thread is running.
|
|
void threadLoop();
|
|
|
|
/**
|
|
* process() call effectProcessImpl() for effect data processing, it is necessary for the
|
|
* processing to be called under Effect thread mutex mThreadMutex, to avoid the effect state
|
|
* change before/during data processing, and keep the thread and effect state consistent.
|
|
*/
|
|
virtual void process() = 0;
|
|
|
|
protected:
|
|
bool mDraining GUARDED_BY(mThreadMutex) = false;
|
|
|
|
private:
|
|
static constexpr int kMaxTaskNameLen = 15;
|
|
|
|
std::mutex mThreadMutex;
|
|
std::condition_variable mCv;
|
|
bool mStop GUARDED_BY(mThreadMutex) = true;
|
|
bool mExit GUARDED_BY(mThreadMutex) = false;
|
|
|
|
std::thread mThread;
|
|
int mPriority;
|
|
std::string mName;
|
|
};
|
|
} // namespace aidl::android::hardware::audio::effect
|