// Copyright 2019 Fuzhou Rockchip Electronics Co., Ltd. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef EASYMEDIA_MUXER_H_
#define EASYMEDIA_MUXER_H_

#include "media_config.h"
#include "media_reflector.h"
#include "media_type.h"
#include "stream.h"

namespace easymedia
{

    DECLARE_FACTORY(Muxer)

    // usage: REFLECTOR(Muxer)::Create<T>(demuxname, param)
    // T must be the final class type exposed to user
    DECLARE_REFLECTOR(Muxer)

#define DEFINE_MUXER_FACTORY(REAL_PRODUCT, FINAL_EXPOSE_PRODUCT)                                                       \
    DEFINE_MEDIA_CHILD_FACTORY(REAL_PRODUCT, REAL_PRODUCT::GetMuxName(), FINAL_EXPOSE_PRODUCT, Muxer)                  \
    DEFINE_MEDIA_CHILD_FACTORY_EXTRA(REAL_PRODUCT)                                                                     \
    DEFINE_MEDIA_NEW_PRODUCT_BY(REAL_PRODUCT, Muxer, Init() != true)

#define DEFINE_COMMON_MUXER_FACTORY(REAL_PRODUCT) DEFINE_MUXER_FACTORY(REAL_PRODUCT, Muxer)

    class MediaBuffer;
    class Encoder;
    typedef int (*write_callback_func)(void*, uint8_t*, int);

    class _API Muxer
    {
      public:
        Muxer(const char* param);
        virtual ~Muxer() = default;
        static const char* GetMuxName()
        {
            return nullptr;
        }

        virtual bool Init() = 0;
        virtual bool IncludeEncoder()
        {
            return false;
        }
        // create a new muxer stream by encoder, return the stream number
        virtual bool NewMuxerStream(const MediaConfig& mc, const std::shared_ptr<MediaBuffer>& enc_extra_data,
                                    int& stream_no) = 0;
        // Some muxer has close integrated io operation, such as ffmpeg.
        // Need set into a corresponding Stream.
        // If set io stream, the following function 'Write' may always return nullptr.
        virtual bool SetIoStream(std::shared_ptr<Stream> output)
        {
            io_output = output;
            return true;
        }

        virtual bool SetWriteCallback(void* handler, write_callback_func callback)
        {
            m_handler = handler;
            m_write_callback_func = callback;
            return true;
        }

        virtual std::shared_ptr<MediaBuffer> WriteHeader(int stream_no) = 0;
        // orig_data:
        //    If nullptr, means flush for prepare ending close.
        virtual std::shared_ptr<MediaBuffer> Write(std::shared_ptr<MediaBuffer> orig_data, int stream_no) = 0;

      protected:
        std::shared_ptr<Stream> io_output;
        void* m_handler;
        write_callback_func m_write_callback_func;
        DECLARE_PART_FINAL_EXPOSE_PRODUCT(Muxer)
    };

} // namespace easymedia

#endif // #ifndef EASYMEDIA_MUXER_H_