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/*
* 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 <cstdlib>
#include <memory>
#include <aidl/android/hardware/audio/effect/BnEffect.h>
#include <fmq/AidlMessageQueue.h>
#include "EffectContext.h"
#include "EffectThread.h"
#include "EffectTypes.h"
#include "effect-impl/EffectContext.h"
#include "effect-impl/EffectThread.h"
#include "effect-impl/EffectTypes.h"
extern "C" binder_exception_t destroyEffect(
const std::shared_ptr<aidl::android::hardware::audio::effect::IEffect>& instanceSp);
namespace aidl::android::hardware::audio::effect {
class EffectImpl : public BnEffect, public EffectThread {
public:
EffectImpl() = default;
virtual ~EffectImpl() = default;
virtual ndk::ScopedAStatus open(const Parameter::Common& common,
const std::optional<Parameter::Specific>& specific,
OpenEffectReturn* ret) override;
virtual ndk::ScopedAStatus close() override;
virtual ndk::ScopedAStatus command(CommandId id) override;
virtual ndk::ScopedAStatus reopen(OpenEffectReturn* ret) override;
virtual ndk::ScopedAStatus getState(State* state) override;
virtual ndk::ScopedAStatus setParameter(const Parameter& param) override;
virtual ndk::ScopedAStatus getParameter(const Parameter::Id& id, Parameter* param) override;
virtual ndk::ScopedAStatus setParameterCommon(const Parameter& param) REQUIRES(mImplMutex);
virtual ndk::ScopedAStatus getParameterCommon(const Parameter::Tag& tag, Parameter* param)
REQUIRES(mImplMutex);
/* Methods MUST be implemented by each effect instances */
virtual ndk::ScopedAStatus getDescriptor(Descriptor* desc) = 0;
virtual ndk::ScopedAStatus setParameterSpecific(const Parameter::Specific& specific)
REQUIRES(mImplMutex) = 0;
virtual ndk::ScopedAStatus getParameterSpecific(const Parameter::Id& id,
Parameter::Specific* specific)
REQUIRES(mImplMutex) = 0;
virtual std::string getEffectName() = 0;
virtual std::shared_ptr<EffectContext> createContext(const Parameter::Common& common)
REQUIRES(mImplMutex);
virtual RetCode releaseContext() REQUIRES(mImplMutex) = 0;
/**
* @brief effectProcessImpl is running in worker thread which created in EffectThread.
*
* EffectThread will make sure effectProcessImpl only be called after startThread() successful
* and before stopThread() successful.
*
* effectProcessImpl implementation must not call any EffectThread interface, otherwise it will
* cause deadlock.
*
* @param in address of input float buffer.
* @param out address of output float buffer.
* @param samples number of samples to process.
* @return IEffect::Status
*/
virtual IEffect::Status effectProcessImpl(float* in, float* out, int samples) = 0;
/**
* process() get data from data MQs, and call effectProcessImpl() for effect data processing.
* Its important for the implementation to use mImplMutex for context synchronization.
*/
void process() override;
protected:
// current Hal version
int mVersion = 0;
// Use kEventFlagNotEmpty for V1 HAL, kEventFlagDataMqNotEmpty for V2 and above
int mDataMqNotEmptyEf = aidl::android::hardware::audio::effect::kEventFlagDataMqNotEmpty;
State mState GUARDED_BY(mImplMutex) = State::INIT;
IEffect::Status status(binder_status_t status, size_t consumed, size_t produced);
void cleanUp();
std::mutex mImplMutex;
std::shared_ptr<EffectContext> mImplContext GUARDED_BY(mImplMutex);
/**
* Optional CommandId handling methods for effects to override.
* For CommandId::START, EffectImpl call commandImpl before starting the EffectThread
* processing.
* For CommandId::STOP and CommandId::RESET, EffectImpl call commandImpl after stop the
* EffectThread processing.
*/
virtual ndk::ScopedAStatus commandImpl(CommandId id) REQUIRES(mImplMutex);
RetCode notifyEventFlag(uint32_t flag);
std::string getEffectNameWithVersion() {
return getEffectName() + "V" + std::to_string(mVersion);
}
::android::hardware::EventFlag* mEventFlag;
};
} // namespace aidl::android::hardware::audio::effect
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