/*
 * Copyright (C) 2014-2017 Intel Corporation
 * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
 *
 * 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 _CAMERA3_HAL_CAMERASTREAMNODE_H_
#define _CAMERA3_HAL_CAMERASTREAMNODE_H_

#include <vector>
#include "hardware/camera3.h"
#include "CameraBuffer.h"
#include "FrameInfo.h"

NAMESPACE_DECLARATION {
/* Forward declaration */
class Camera3Request;

class CameraStreamNode {
 public:
    CameraStreamNode() : mConsumer(nullptr),
                         mProducer(nullptr) {};
    virtual ~CameraStreamNode(){};
    static void bind(CameraStreamNode *consumer, CameraStreamNode *producer) {
        consumer->mProducer = producer;
        producer->mConsumer = consumer;
        if(consumer->configure() == NO_ERROR)
            producer->configure();
    };
    static void unbind(CameraStreamNode *consumer, CameraStreamNode *producer) {
        if (consumer)
            consumer->mProducer = nullptr;
        if (producer)
            producer->mConsumer = nullptr;
    };

    virtual int usage(void) const { return 0; }
    virtual status_t query(FrameInfo * info) = 0;
    virtual status_t capture(std::shared_ptr<CameraBuffer> aBuffer,
                             Camera3Request* request) = 0;
    virtual status_t captureDone(std::shared_ptr<CameraBuffer> buffer,
                                 Camera3Request* request) = 0;
    virtual status_t reprocess(std::shared_ptr<CameraBuffer> buffer,
                               Camera3Request* request) = 0;
    virtual void dump(int fd) const = 0;

 protected:
    // the data will be used by the consumer, if it's nullptr, it means that there
    // is no other back stream will use it.
    CameraStreamNode *mConsumer;
    // the data will be generated by the producer, if it's nullptr, it means that
    //this node is just used to generate the data
    CameraStreamNode *mProducer;
 private:
   virtual status_t configure(void) = 0;
};

} NAMESPACE_DECLARATION_END
#endif /* _CAMERA3_HAL_CAMERASTREAMNODE_H_ */