Remove unused file EffectWorker.h

/*

 * 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 <algorithm>

#include <memory>

#include <mutex>

#include <string>

#include "EffectContext.h"

#include "EffectThread.h"

namespace aidl::android::hardware::audio::effect {

std::string toString(RetCode& code);

class EffectWorker : public EffectThread {

  public:

    // set effect context for worker, suppose to only happen once here

    void setContext(std::shared_ptr<EffectContext> context) {

        std::call_once(mOnceFlag, [&]() { mContext = context; });

    };

    // handle FMQ and call effect implemented virtual function

    void process() override {

        RETURN_VALUE_IF(!mContext, void(), "nullContext");

        std::shared_ptr<EffectContext::StatusMQ> statusMQ = mContext->getStatusFmq();

        std::shared_ptr<EffectContext::DataMQ> inputMQ = mContext->getInputDataFmq();

        std::shared_ptr<EffectContext::DataMQ> outputMQ = mContext->getOutputDataFmq();

        // Only this worker will read from input data MQ and write to output data MQ.

        auto readSamples = inputMQ->availableToRead(), writeSamples = outputMQ->availableToWrite();

        if (readSamples && writeSamples) {

            auto processSamples = std::min(readSamples, writeSamples);

            LOG(VERBOSE) << __func__ << " available to read " << readSamples

                         << " available to write " << writeSamples << " process " << processSamples;

            auto buffer = mContext->getWorkBuffer();

            inputMQ->read(buffer, processSamples);

            IEffect::Status status = effectProcessImpl(buffer, buffer, processSamples);

            outputMQ->write(buffer, status.fmqProduced);

            statusMQ->writeBlocking(&status, 1);

            LOG(VERBOSE) << __func__ << " done processing, effect consumed " << status.fmqConsumed

                         << " produced " << status.fmqProduced;

        } else {

            // TODO: maybe add some sleep here to avoid busy waiting

        }

    }

    // must implement by each effect implementation

    // TODO: consider if this interface need adjustment to handle in-place processing

    virtual IEffect::Status effectProcessImpl(float* in, float* out, int samples) = 0;

  private:

    // make sure the context only set once.

    std::once_flag mOnceFlag;

    std::shared_ptr<EffectContext> mContext;

};

}  // namespace aidl::android::hardware::audio::effect