ZLMediaKit/src/Common/Device.h

/*
 * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
 *
 * This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
 *
 * Use of this source code is governed by MIT license that can be found in the
 * LICENSE file in the root of the source tree. All contributing project authors
 * may be found in the AUTHORS file in the root of the source tree.
 */

#ifndef DEVICE_DEVICE_H_
#define DEVICE_DEVICE_H_

#include <memory>
#include <string>
#include <functional>
#include "Util/TimeTicker.h"
#include "Common/MultiMediaSourceMuxer.h"

namespace mediakit {

class H264Encoder;
class AACEncoder;

class VideoInfo {
public:
    CodecId codecId = CodecH264;
    int iWidth;
    int iHeight;
    float iFrameRate;
    int iBitRate = 2 * 1024 * 1024;
};

class AudioInfo {
public:
    CodecId codecId = CodecAAC;
    int iChannel;
    int iSampleBit;
    int iSampleRate;
};

/**
 * MultiMediaSourceMuxer类的包装，方便初学者使用
 */
class DevChannel  : public MultiMediaSourceMuxer{
public:
    using Ptr = std::shared_ptr<DevChannel>;

    //fDuration<=0为直播，否则为点播
    DevChannel(
        const std::string &vhost, const std::string &app, const std::string &stream_id, float duration = 0,
        const ProtocolOption &option = ProtocolOption())
        : MultiMediaSourceMuxer(vhost, app, stream_id, duration, option) {}
    ~DevChannel() override = default;

    /**
     * 初始化视频Track
     * 相当于MultiMediaSourceMuxer::addTrack(VideoTrack::Ptr );
     * @param info 视频相关信息
     */
    bool initVideo(const VideoInfo &info);

    /**
     * 初始化音频Track
     * 相当于MultiMediaSourceMuxer::addTrack(AudioTrack::Ptr );
     * @param info 音频相关信息
     */
    bool initAudio(const AudioInfo &info);

    /**
     * 输入264帧
     * @param data 264单帧数据指针
     * @param len 数据指针长度
     * @param dts 解码时间戳，单位毫秒；等于0时内部会自动生成时间戳
     * @param pts 播放时间戳，单位毫秒；等于0时内部会赋值为dts
     */
    bool inputH264(const char *data, int len, uint64_t dts, uint64_t pts = 0);

    /**
     * 输入265帧
     * @param data 265单帧数据指针
     * @param len 数据指针长度
     * @param dts 解码时间戳，单位毫秒；等于0时内部会自动生成时间戳
     * @param pts 播放时间戳，单位毫秒；等于0时内部会赋值为dts
     */
    bool inputH265(const char *data, int len, uint64_t dts, uint64_t pts = 0);

    /**
     * 输入aac帧
     * @param data_without_adts 不带adts头的aac帧
     * @param len 帧数据长度
     * @param dts 时间戳，单位毫秒
     * @param adts_header adts头
     */
    bool inputAAC(const char *data_without_adts, int len, uint64_t dts, const char *adts_header);

    /**
     * 输入OPUS/G711音频帧
     * @param data 音频帧
     * @param len 帧数据长度
     * @param dts 时间戳，单位毫秒
     */
    bool inputAudio(const char *data, int len, uint64_t dts);

    /**
     * 输入yuv420p视频帧，内部会完成编码并调用inputH264方法
     * @param yuv yuv420p数据指针
     * @param linesize yuv420p数据linesize
     * @param cts 采集时间戳，单位毫秒
     */
    bool inputYUV(char *yuv[3], int linesize[3], uint64_t cts);

    /**
     * 输入pcm数据，内部会完成编码并调用inputAAC方法
     * @param data pcm数据指针，int16整形
     * @param len pcm数据长度
     * @param cts 采集时间戳，单位毫秒
     */
    bool inputPCM(char *data, int len, uint64_t cts);

private:
    MediaOriginType getOriginType(MediaSource &sender) const override;

private:
    std::shared_ptr<H264Encoder> _pH264Enc;
    std::shared_ptr<AACEncoder> _pAacEnc;
    std::shared_ptr<VideoInfo> _video;
    std::shared_ptr<AudioInfo> _audio;
    toolkit::SmoothTicker _aTicker[2];
};

} /* namespace mediakit */

#endif /* DEVICE_DEVICE_H_ */