#ifndef _cffmpeg_wrapper_hpp_
#define _cffmpeg_wrapper_hpp_

#include <stdint.h>

#include <string>
#include <list>
#include <thread>
#include <atomic>
#include <mutex>
#include <unordered_map>
#include <memory>
#include "common/callback.hpp"


namespace ffwrapper{
    class FormatIn;
    class FormatOut;
    
    class VideoProp;
    class CodedData;
    class FrameData;

    class cvbridge;
}

enum WORKER{
    WORKER_RECORDER = 0,
    WORKER_DECODER,
    WORKER_ENCODER,
};

namespace cffmpeg_wrap{

    typedef std::function<int(ffwrapper::FormatIn*)> FUNC_WORKER;

    typedef struct _pic_bgr24{
        unsigned char *data;
        int w;
        int h;
    }pic_bgr24;

    namespace buz{
        class Recorder;
        struct avpacket;
    }
    class Wrapper{
        public:
            Wrapper();
            ~Wrapper ();

        private: 
            std::unique_ptr<ffwrapper::FormatIn> init_reader(const char* input);
            void init_worker(ffwrapper::FormatIn *in);
            int init_recorder(ffwrapper::FormatIn *in, std::string dir, const int mind, const int maxd);
            void run_worker(ffwrapper::FormatIn *in, buz::avpacket &pkt);

            void cache_rec_info(int &index, std::string &path);
            void cache_pic(std::shared_ptr<ffwrapper::FrameData> &frame);
        public: 
            int RunStream(const char* input);
        private: 
            void run_stream_thread();

        public: //recorder
            void BuildRecorder(const char *dir, const int mind, const int maxd);
            int FireRecorder(const int64_t &id);
            void GetInfoRecorder(int &index, std::string &path);

            // active api
            void ActiveRecorder(const char *dir, const int mind, const int maxd,
                                FUNC_REC func);

            void ScalePicture(const int w, const int h, const int flags);
        public: //decoder
            void BuildDecoder();
            void GetPicDecoder(unsigned char **data, int *w, int *h);
            //active api
            void ActiveDecoder(FUNC_DEC fn);

        public:
            void BuildEncoder(const char *file, const int w, const int h, const int fps, const int br, const int gi);
            int init_encoder(ffwrapper::FormatIn *in, const char *file, const int w, const int h, const int fps, const int br, const int gi);

        private:

            std::string input_url_;
            buz::Recorder  *recorder_;

            std::unique_ptr<std::thread> thread_;
            std::atomic_bool    stop_stream_;

            ffwrapper::cvbridge *bridge_;
            std::unordered_map<int, FUNC_WORKER> map_workers_;

            //passive api
            struct record_file_info{
                int file_frame_index;
                std::string file_path;
            };
            std::list<struct record_file_info>  list_rec_;
            std::mutex mutex_rec_;

            std::list<pic_bgr24> list_pic_;
            std::mutex mutex_pic_;
            // active api
            FUNC_REC func_rec_;
            FUNC_DEC func_dec_;

            int scale_w_, scale_h_, scale_f_;
        //////////////////test frame to bgr24
        public:
            uint8_t *decodeJPEG(const char *file, int *w, int *h);

        private:
            ffwrapper::FormatOut *encoder_;
    };

    void *CreateEncoder(const int w, const int h, const int fps, const int br, const int scale_flag, const int gi);
    void DestroyEncoder(void *h);
    int Encode(void *hdl, uint8_t *in, const int w, const int h, uint8_t **out, int *size, int *key);

}

#endif