mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
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329 lines
7.8 KiB
C++
329 lines
7.8 KiB
C++
//
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// Created by xzl on 2018/10/21.
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//
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#ifndef ZLMEDIAKIT_TRACK_H
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#define ZLMEDIAKIT_TRACK_H
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#include <memory>
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#include <string>
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#include "Frame.h"
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#include "Util/RingBuffer.h"
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#include "Rtsp/Rtsp.h"
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#include "Player.h"
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using namespace std;
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using namespace ZL::Util;
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class Track : public FrameRing , public CodecInfo{
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public:
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typedef std::shared_ptr<Track> Ptr;
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Track(){}
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virtual ~Track(){}
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};
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class VideoTrack : public Track {
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public:
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typedef std::shared_ptr<VideoTrack> Ptr;
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TrackType getTrackType() const override { return TrackVideo;};
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/**
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* 返回视频高度
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* @return
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*/
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virtual int getVideoHeight() const = 0;
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/**
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* 返回视频宽度
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* @return
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*/
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virtual int getVideoWidth() const = 0;
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/**
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* 返回视频fps
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* @return
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*/
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virtual float getVideoFps() const = 0;
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};
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class AudioTrack : public Track {
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public:
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typedef std::shared_ptr<AudioTrack> Ptr;
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TrackType getTrackType() const override { return TrackAudio;};
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/**
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* 返回音频采样率
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* @return
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*/
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virtual int getAudioSampleRate() const = 0;
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/**
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* 返回音频采样位数，一般为16或8
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* @return
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*/
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virtual int getAudioSampleBit() const = 0;
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/**
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* 返回音频通道数
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* @return
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*/
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virtual int getAudioChannel() const = 0;
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};
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class H264Track : public VideoTrack{
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public:
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typedef std::shared_ptr<H264Track> Ptr;
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/**
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* 不指定sps pps构造h264类型的媒体
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* 在随后的inputFrame中获取sps pps
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*/
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H264Track(){}
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/**
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* 构造h264类型的媒体
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* @param sps sps帧数据
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* @param pps pps帧数据
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* @param sps_prefix_len 264头长度，可以为3个或4个字节，一般为0x00 00 00 01
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* @param pps_prefix_len 264头长度，可以为3个或4个字节，一般为0x00 00 00 01
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*/
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H264Track(const string &sps,const string &pps,int sps_prefix_len = 4,int pps_prefix_len = 4){
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_sps = sps.substr(sps_prefix_len);
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_pps = pps.substr(pps_prefix_len);
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parseSps(_sps);
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}
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/**
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* 构造h264类型的媒体
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* @param sps sps帧
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* @param pps pps帧
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*/
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H264Track(const Frame::Ptr &sps,const Frame::Ptr &pps){
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if(sps->getCodecId() != CodecH264 || pps->getCodecId() != CodecH264 ){
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throw std::invalid_argument("必须输入H264类型的帧");
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}
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_sps = string(sps->data() + sps->prefixSize(),sps->size() - sps->prefixSize());
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_pps = string(pps->data() + pps->prefixSize(),pps->size() - pps->prefixSize());
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parseSps(_sps);
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}
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/**
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* 返回不带0x00 00 00 01头的sps
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* @return
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*/
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const string &getSps() const{
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return _sps;
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}
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/**
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* 返回不带0x00 00 00 01头的pps
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* @return
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*/
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const string &getPps() const{
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return _pps;
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}
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CodecId getCodecId() const override {
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return CodecH264;
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}
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/**
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* 返回视频高度
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* @return
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*/
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int getVideoHeight() const override{
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return _width;
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}
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/**
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* 返回视频宽度
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* @return
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*/
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int getVideoWidth() const override{
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return _height;
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}
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/**
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* 返回视频fps
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* @return
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*/
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float getVideoFps() const override{
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return _fps;
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}
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TrackType getTrackType() const override {
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if(_sps.empty() || _pps.empty()){
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return TrackInvalid;
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}
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return TrackVideo;
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}
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/**
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* 输入数据帧,并获取sps pps
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* @param frame 数据帧
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*/
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void inputFrame(const Frame::Ptr &frame) override{
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int type = (*((uint8_t *)frame->data() + frame->prefixSize())) & 0x1F;
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switch (type){
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case 7:{
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//sps
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bool flag = _sps.empty();
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_sps = string(frame->data() + frame->prefixSize(),frame->size() - frame->prefixSize());
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if(flag && _width == 0){
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parseSps(_sps);
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}
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}
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break;
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case 8:{
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//pps
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_pps = string(frame->data() + frame->prefixSize(),frame->size() - frame->prefixSize());
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}
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break;
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case 5:{
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//I
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if(!_sps.empty()){
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H264Frame::Ptr insertFrame = std::make_shared<H264Frame>();
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insertFrame->timeStamp = frame->stamp();
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insertFrame->type = 7;
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insertFrame->buffer = _sps;
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insertFrame->iPrefixSize = 0;
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VideoTrack::inputFrame(insertFrame);
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}
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if(!_pps.empty()){
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H264Frame::Ptr insertFrame = std::make_shared<H264Frame>();
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insertFrame->timeStamp = frame->stamp();
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insertFrame->type = 8;
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insertFrame->buffer = _pps;
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insertFrame->iPrefixSize = 0;
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VideoTrack::inputFrame(insertFrame);
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}
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VideoTrack::inputFrame(frame);
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}
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break;
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case 1:{
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//B or P
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VideoTrack::inputFrame(frame);
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}
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break;
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}
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}
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private:
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/**
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* 解析sps获取宽高fps
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* @param sps sps不含头数据
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*/
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void parseSps(const string &sps){
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getAVCInfo(sps,_width,_height,_fps);
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}
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private:
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string _sps;
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string _pps;
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int _width = 0;
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int _height = 0;
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float _fps = 0;
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};
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class AACTrack : public AudioTrack{
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public:
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typedef std::shared_ptr<AACTrack> Ptr;
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/**
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* 构造aac类型的媒体
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* @param aac_cfg aac两个字节的配置信息
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*/
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AACTrack(const string &aac_cfg){
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if(aac_cfg.size() != 2){
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throw std::invalid_argument("adts配置必须为2个字节");
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}
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_cfg = aac_cfg;
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parseAacCfg(_cfg);
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}
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/**
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* 构造aac类型的媒体
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* @param adts_header adts头，7个字节
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* @param adts_header_len adts头长度，不少于7个字节
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*/
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AACTrack(const char *adts_header,int adts_header_len = 7){
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if(adts_header_len < 7){
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throw std::invalid_argument("adts头必须不少于7个字节");
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}
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_cfg = makeAdtsConfig((uint8_t*)adts_header);
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parseAacCfg(_cfg);
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}
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/**
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* 构造aac类型的媒体
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* @param aac_frame_with_adts 带adts头的aac帧
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*/
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AACTrack(const Frame::Ptr &aac_frame_with_adts){
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if(aac_frame_with_adts->getCodecId() != CodecAAC || aac_frame_with_adts->prefixSize() < 7){
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throw std::invalid_argument("必须输入带adts头的aac帧");
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}
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_cfg = makeAdtsConfig((uint8_t*)aac_frame_with_adts->data());
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parseAacCfg(_cfg);
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}
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/**
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* 获取aac两个字节的配置
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* @return
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*/
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const string &getAacCfg() const{
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return _cfg;
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}
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/**
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* 返回编码类型
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* @return
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*/
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CodecId getCodecId() const override{
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return CodecAAC;
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}
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/**
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* 返回音频采样率
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* @return
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*/
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int getAudioSampleRate() const override{
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return _sampleRate;
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}
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/**
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* 返回音频采样位数，一般为16或8
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* @return
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*/
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int getAudioSampleBit() const override{
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return _sampleBit;
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}
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/**
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* 返回音频通道数
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* @return
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*/
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int getAudioChannel() const override{
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return _channel;
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}
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private:
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/**
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* 解析2个字节的aac配置
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* @param aac_cfg
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*/
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void parseAacCfg(const string &aac_cfg){
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AACFrame aacFrame;
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makeAdtsHeader(aac_cfg,aacFrame);
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getAACInfo(aacFrame,_sampleRate,_channel);
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}
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private:
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string _cfg;
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int _sampleRate = 0;
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int _sampleBit = 16;
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int _channel = 0;
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};
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#endif //ZLMEDIAKIT_TRACK_H
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