mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2026-06-23 01:12:20 +08:00
137 lines
3.7 KiB
C++
137 lines
3.7 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
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*
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* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef ZLMEDIAKIT_RTSPSDP_H
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#define ZLMEDIAKIT_RTSPSDP_H
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#include "Util/base64.h"
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#include "Extension/Track.h"
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#include "RtspMuxer/RtpCodec.h"
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namespace mediakit {
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/**
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* rtsp sdp基类
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*/
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class Sdp : 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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* 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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* @return Rtp打包器
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*/
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virtual RtpCodec::Ptr createRtpEncoder(uint32_t ssrc, int mtu);
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private:
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uint8_t _playload_type;
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uint32_t _sample_rate;
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};
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/**
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* sdp中除音视频外的其他描述部分
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*/
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class TitleSdp : public Sdp{
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public:
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/**
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* 构造title类型sdp
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* @param dur_sec rtsp点播时长，0代表直播，单位秒
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* @param header 自定义sdp描述
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* @param version sdp版本
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*/
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TitleSdp(float dur_sec = 0,
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const map<string,string> &header = map<string,string>(),
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int version = 0) : Sdp(0,0){
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_printer << "v=" << version << "\r\n";
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if(!header.empty()){
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for (auto &pr : header){
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_printer << pr.first << "=" << pr.second << "\r\n";
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}
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} else {
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_printer << "o=- 1383190487994921 1 IN IP4 0.0.0.0\r\n";
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_printer << "s=RTSP Session, streamed by the ZLMediaKit\r\n";
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_printer << "i=ZLMediaKit Live Stream\r\n";
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_printer << "c=IN IP4 0.0.0.0\r\n";
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_printer << "t=0 0\r\n";
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}
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if(dur_sec <= 0){
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_printer << "a=range:npt=0-\r\n";
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}else{
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_printer << "a=range:npt=0-" << dur_sec << "\r\n";
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}
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_printer << "a=control:*\r\n";
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}
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string getSdp() const override {
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return _printer;
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}
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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 TrackTitle;
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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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private:
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_StrPrinter _printer;
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};
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} /* namespace mediakit */
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#endif //ZLMEDIAKIT_RTSPSDP_H
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