mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-23 03:10:04 +08:00
添加注释，完善接口
This commit is contained in:
xiongziliang
parent
4af9927e8c
commit
c5e372c155
@ -118,12 +118,15 @@ void getAACInfo(const AACFrame &adts,int &iSampleRate,int &iChannel){
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iChannel = adts.channel_configuration;
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}
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bool getAVCInfo(const string& strSps,int &iVideoWidth, int &iVideoHeight, float &iVideoFps) {
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return getAVCInfo(strSps.data(),strSps.size(),iVideoWidth,iVideoHeight,iVideoFps);
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}
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bool getAVCInfo(const char * sps,int sps_len,int &iVideoWidth, int &iVideoHeight, float &iVideoFps){
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T_GetBitContext tGetBitBuf;
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T_SPS tH264SpsInfo;
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memset(&tGetBitBuf,0,sizeof(tGetBitBuf));
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memset(&tH264SpsInfo,0,sizeof(tH264SpsInfo));
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tGetBitBuf.pu8Buf = (uint8_t *)strSps.data() + 1;
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tGetBitBuf.iBufSize = strSps.size() - 1;
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tGetBitBuf.pu8Buf = (uint8_t*)sps + 1;
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tGetBitBuf.iBufSize = sps_len - 1;
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if(0 != h264DecSeqParameterSet((void *) &tGetBitBuf, &tH264SpsInfo)){
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return false;
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}
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@ -45,5 +45,7 @@ void writeAdtsHeader(const AACFrame &adts, uint8_t *pcAdts) ;
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string makeAdtsConfig(const uint8_t *pcAdts);
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void getAACInfo(const AACFrame &adts,int &iSampleRate,int &iChannel);
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bool getAVCInfo(const string &strSps,int &iVideoWidth, int &iVideoHeight, float &iVideoFps);
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bool getAVCInfo(const char * sps,int sps_len,int &iVideoWidth, int &iVideoHeight, float &iVideoFps);
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#endif /* SRC_PLAYER_PLAYER_H_ */
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@ -10,11 +10,12 @@
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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 FrameRingInterface , public CodecInfo{
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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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@ -24,52 +25,231 @@ public:
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class VideoTrack : public Track {
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public:
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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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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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H264Track(const string &sps,const string &pps){
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_sps = sps;
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_pps = pps;
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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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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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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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/**
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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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@ -15,51 +15,98 @@ namespace Rtsp{
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/**
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* sdp基类
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*/
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class Sdp : public Track , public RtpRingInterface{
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class Sdp : public FrameRingInterface , public RtpRingInterface , public CodecInfo{
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public:
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typedef std::shared_ptr<Sdp> Ptr;
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/**
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* 构造sdp
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* @param sample_rate 采样率
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* @param playload_type pt类型
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*/
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Sdp(uint32_t sample_rate, uint8_t playload_type){
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_sample_rate = sample_rate;
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_playload_type = playload_type;
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}
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virtual ~Sdp(){}
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/**
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* 获取sdp字符串
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* @return
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*/
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virtual string getSdp() const = 0;
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/**
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* 返回音频或视频类型
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* @return
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*/
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TrackType getTrackType() const override {
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return TrackInvalid;
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}
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/**
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* 返回编码器id
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* @return
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*/
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CodecId getCodecId() const override{
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return CodecInvalid;
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}
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/**
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* 获取帧环形缓存
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* @return
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*/
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FrameRingInterface::RingType::Ptr getFrameRing() const override {
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return _encoder->getFrameRing();
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}
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/**
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* 获取rtp环形缓存
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* @return
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*/
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RtpRingInterface::RingType::Ptr getRtpRing() const override{
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return _encoder->getRtpRing();
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}
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/**
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* 输入帧数据，驱动rtp打包
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* @param frame 帧数据
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* @param key_pos 是否为关键帧
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*/
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void inputFrame(const Frame::Ptr &frame,bool key_pos) override{
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_encoder->inputFrame(frame,key_pos);
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}
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/**
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* 也可以在外部打包rtp后直接输入rtp
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* @param rtp rtp数据包
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* @param key_pos 是否为关键帧第一个rtp包
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*/
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void inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) override{
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_encoder->inputRtp(rtp,key_pos);
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}
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/**
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* 替换帧环形缓存，目的是多个rtp打包器共用一个环形缓存
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* @param ring
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*/
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void setFrameRing(const FrameRingInterface::RingType::Ptr &ring) override{
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_encoder->setFrameRing(ring);
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}
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/**
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* 替换帧环形缓存，目的是多个rtp打包器共用一个环形缓存
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* @param ring
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*/
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void setRtpRing(const RtpRingInterface::RingType::Ptr &ring) override{
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_encoder->setRtpRing(ring);
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}
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/**
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* 创建Rtp打包器
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* @param ssrc 打包器ssrc，可以为0
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* @param mtu mtu大小，一般小于1500字节，推荐1400
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*/
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virtual void createRtpEncoder(uint32_t ssrc, int mtu) {
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_encoder = RtpCodec::getRtpCodec (getCodecId(),
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ssrc,
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@ -127,20 +174,17 @@ public:
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*
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* @param sps 264 sps,带0x00000001头
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* @param pps 264 pps,带0x00000001头
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* @param sample_rate 时间戳采样率，视频默认90000
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* @param playload_type rtp playload type 默认96
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* @param track_id trackID 默认为TrackVideo
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* @param playload_type rtp playload type 默认96
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* @param bitrate 比特率
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*/
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H264Sdp(const string &sps,
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const string &pps,
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int sample_rate = 90000,
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int playload_type = 96,
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int bitrate = 4000) : Sdp(sample_rate,playload_type) {
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int bitrate = 4000) : Sdp(90000,playload_type) {
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//视频通道
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_printer << "m=video 0 RTP/AVP " << playload_type << "\r\n";
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_printer << "b=AS:" << bitrate << "\r\n";
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_printer << "a=rtpmap:" << playload_type << " H264/" << sample_rate << "\r\n";
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_printer << "a=rtpmap:" << playload_type << " H264/" << 90000 << "\r\n";
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_printer << "a=fmtp:" << playload_type << " packetization-mode=1;profile-level-id=";
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char strTemp[100];
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@ -186,11 +230,10 @@ class AACSdp : public Sdp {
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public:
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/**
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* 构造aac sdp
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*
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* @param aac_cfg aac两个字节的配置描述
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* @param sample_rate 音频采样率
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* @param playload_type rtp playload type 默认96
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* @param track_id trackID 默认为TrackVideo
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* @param playload_type rtp playload type 默认98
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* @param bitrate 比特率
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*/
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AACSdp(const string &aac_cfg,
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