mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-24 11:40:37 +08:00
389 lines
9.2 KiB
C++
389 lines
9.2 KiB
C++
/*
|
||
* 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 RTSP_RTSP_H_
|
||
#define RTSP_RTSP_H_
|
||
|
||
#include <string.h>
|
||
#include <string>
|
||
#include <memory>
|
||
#include <unordered_map>
|
||
#include "Util/util.h"
|
||
#include "Common/config.h"
|
||
#include "Common/macros.h"
|
||
#include "Extension/Frame.h"
|
||
|
||
using namespace std;
|
||
using namespace toolkit;
|
||
using namespace mediakit;
|
||
|
||
namespace mediakit {
|
||
|
||
namespace Rtsp {
|
||
typedef enum {
|
||
RTP_Invalid = -1,
|
||
RTP_TCP = 0,
|
||
RTP_UDP = 1,
|
||
RTP_MULTICAST = 2,
|
||
} eRtpType;
|
||
|
||
#define RTP_PT_MAP(XX) \
|
||
XX(PCMU, TrackAudio, 0, 8000, 1, CodecG711U) \
|
||
XX(GSM, TrackAudio , 3, 8000, 1, CodecInvalid) \
|
||
XX(G723, TrackAudio, 4, 8000, 1, CodecInvalid) \
|
||
XX(DVI4_8000, TrackAudio, 5, 8000, 1, CodecInvalid) \
|
||
XX(DVI4_16000, TrackAudio, 6, 16000, 1, CodecInvalid) \
|
||
XX(LPC, TrackAudio, 7, 8000, 1, CodecInvalid) \
|
||
XX(PCMA, TrackAudio, 8, 8000, 1, CodecG711A) \
|
||
XX(G722, TrackAudio, 9, 8000, 1, CodecInvalid) \
|
||
XX(L16_Stereo, TrackAudio, 10, 44100, 2, CodecInvalid) \
|
||
XX(L16_Mono, TrackAudio, 11, 44100, 1, CodecInvalid) \
|
||
XX(QCELP, TrackAudio, 12, 8000, 1, CodecInvalid) \
|
||
XX(CN, TrackAudio, 13, 8000, 1, CodecInvalid) \
|
||
XX(MPA, TrackAudio, 14, 90000, 1, CodecInvalid) \
|
||
XX(G728, TrackAudio, 15, 8000, 1, CodecInvalid) \
|
||
XX(DVI4_11025, TrackAudio, 16, 11025, 1, CodecInvalid) \
|
||
XX(DVI4_22050, TrackAudio, 17, 22050, 1, CodecInvalid) \
|
||
XX(G729, TrackAudio, 18, 8000, 1, CodecInvalid) \
|
||
XX(CelB, TrackVideo, 25, 90000, 1, CodecInvalid) \
|
||
XX(JPEG, TrackVideo, 26, 90000, 1, CodecInvalid) \
|
||
XX(nv, TrackVideo, 28, 90000, 1, CodecInvalid) \
|
||
XX(H261, TrackVideo, 31, 90000, 1, CodecInvalid) \
|
||
XX(MPV, TrackVideo, 32, 90000, 1, CodecInvalid) \
|
||
XX(MP2T, TrackVideo, 33, 90000, 1, CodecInvalid) \
|
||
XX(H263, TrackVideo, 34, 90000, 1, CodecInvalid) \
|
||
|
||
typedef enum {
|
||
#define ENUM_DEF(name, type, value, clock_rate, channel, codec_id) PT_ ## name = value,
|
||
RTP_PT_MAP(ENUM_DEF)
|
||
#undef ENUM_DEF
|
||
PT_MAX = 128
|
||
} PayloadType;
|
||
|
||
};
|
||
|
||
#if defined(_WIN32)
|
||
#pragma pack(push, 1)
|
||
#endif // defined(_WIN32)
|
||
|
||
class RtpHeader {
|
||
public:
|
||
#if __BYTE_ORDER == __BIG_ENDIAN
|
||
//版本号，固定为2
|
||
uint32_t version: 2;
|
||
//padding
|
||
uint32_t padding: 1;
|
||
//扩展
|
||
uint32_t ext: 1;
|
||
//csrc
|
||
uint32_t csrc: 4;
|
||
//mark
|
||
uint32_t mark: 1;
|
||
//负载类型
|
||
uint32_t pt: 7;
|
||
#else
|
||
//csrc
|
||
uint32_t csrc: 4;
|
||
//扩展
|
||
uint32_t ext: 1;
|
||
//padding
|
||
uint32_t padding: 1;
|
||
//版本号，固定为2
|
||
uint32_t version: 2;
|
||
//负载类型
|
||
uint32_t pt: 7;
|
||
//mark
|
||
uint32_t mark: 1;
|
||
#endif
|
||
//序列号
|
||
uint32_t seq: 16;
|
||
//时间戳
|
||
uint32_t stamp;
|
||
//ssrc
|
||
uint32_t ssrc;
|
||
//负载，如果有csrc和ext，前面为 4 * csrc + (4 + 4 * ext_len)
|
||
uint8_t payload;
|
||
|
||
public:
|
||
//返回csrc字段字节长度
|
||
size_t getCsrcSize() const;
|
||
//返回csrc字段首地址，不存在时返回nullptr
|
||
uint8_t *getCsrcData();
|
||
|
||
//返回ext字段字节长度
|
||
size_t getExtSize() const;
|
||
//返回ext reserved值
|
||
uint16_t getExtReserved() const;
|
||
//返回ext段首地址，不存在时返回nullptr
|
||
uint8_t *getExtData();
|
||
|
||
//返回有效负载指针,跳过csrc、ext
|
||
uint8_t* getPayloadData();
|
||
//返回有效负载总长度,不包括csrc、ext、padding
|
||
size_t getPayloadSize(size_t rtp_size) const;
|
||
//打印调试信息
|
||
string dumpString(size_t rtp_size) const;
|
||
|
||
private:
|
||
//返回有效负载偏移量
|
||
size_t getPayloadOffset() const;
|
||
//返回padding长度
|
||
size_t getPaddingSize(size_t rtp_size) const;
|
||
} PACKED;
|
||
|
||
#if defined(_WIN32)
|
||
#pragma pack(pop)
|
||
#endif // defined(_WIN32)
|
||
|
||
//此rtp为rtp over tcp形式，需要忽略前4个字节
|
||
class RtpPacket : public BufferRaw{
|
||
public:
|
||
using Ptr = std::shared_ptr<RtpPacket>;
|
||
enum {
|
||
kRtpVersion = 2,
|
||
kRtpHeaderSize = 12,
|
||
kRtpTcpHeaderSize = 4
|
||
};
|
||
|
||
//获取rtp头
|
||
RtpHeader* getHeader();
|
||
const RtpHeader* getHeader() const;
|
||
|
||
//打印调试信息
|
||
string dumpString() const;
|
||
|
||
//主机字节序的seq
|
||
uint16_t getSeq() const;
|
||
uint32_t getStamp() const;
|
||
//主机字节序的时间戳，已经转换为毫秒
|
||
uint32_t getStampMS() const;
|
||
//主机字节序的ssrc
|
||
uint32_t getSSRC() const;
|
||
//有效负载，跳过csrc、ext
|
||
uint8_t* getPayload();
|
||
//有效负载长度，不包括csrc、ext、padding
|
||
size_t getPayloadSize() const;
|
||
|
||
//音视频类型
|
||
TrackType type;
|
||
//音频为采样率，视频一般为90000
|
||
uint32_t sample_rate;
|
||
//ntp时间戳
|
||
uint64_t ntp_stamp;
|
||
|
||
static Ptr create();
|
||
|
||
private:
|
||
friend class ResourcePool_l<RtpPacket>;
|
||
RtpPacket() = default;
|
||
|
||
private:
|
||
//对象个数统计
|
||
ObjectStatistic<RtpPacket> _statistic;
|
||
};
|
||
|
||
class RtpPayload {
|
||
public:
|
||
static int getClockRate(int pt);
|
||
static TrackType getTrackType(int pt);
|
||
static int getAudioChannel(int pt);
|
||
static const char *getName(int pt);
|
||
static CodecId getCodecId(int pt);
|
||
|
||
private:
|
||
RtpPayload() = delete;
|
||
~RtpPayload() = delete;
|
||
};
|
||
|
||
class SdpTrack {
|
||
public:
|
||
using Ptr = std::shared_ptr<SdpTrack>;
|
||
|
||
string _m;
|
||
string _o;
|
||
string _s;
|
||
string _i;
|
||
string _c;
|
||
string _t;
|
||
string _b;
|
||
uint16_t _port;
|
||
|
||
float _duration = 0;
|
||
float _start = 0;
|
||
float _end = 0;
|
||
|
||
map<char, string> _other;
|
||
multimap<string, string> _attr;
|
||
|
||
string toString() const;
|
||
string getName() const;
|
||
string getControlUrl(const string &base_url) const;
|
||
|
||
public:
|
||
int _pt;
|
||
int _channel;
|
||
int _samplerate;
|
||
TrackType _type;
|
||
string _codec;
|
||
string _fmtp;
|
||
string _control;
|
||
|
||
public:
|
||
bool _inited = false;
|
||
uint8_t _interleaved = 0;
|
||
uint16_t _seq = 0;
|
||
uint32_t _ssrc = 0;
|
||
//时间戳，单位毫秒
|
||
uint32_t _time_stamp = 0;
|
||
};
|
||
|
||
class SdpParser {
|
||
public:
|
||
using Ptr = std::shared_ptr<SdpParser>;
|
||
|
||
SdpParser() {}
|
||
SdpParser(const string &sdp) { load(sdp); }
|
||
~SdpParser() {}
|
||
|
||
void load(const string &sdp);
|
||
bool available() const;
|
||
SdpTrack::Ptr getTrack(TrackType type) const;
|
||
vector<SdpTrack::Ptr> getAvailableTrack() const;
|
||
string toString() const;
|
||
|
||
private:
|
||
vector<SdpTrack::Ptr> _track_vec;
|
||
};
|
||
|
||
/**
|
||
* 解析rtsp url的工具类
|
||
*/
|
||
class RtspUrl{
|
||
public:
|
||
bool _is_ssl;
|
||
uint16_t _port;
|
||
string _url;
|
||
string _user;
|
||
string _passwd;
|
||
string _host;
|
||
|
||
public:
|
||
RtspUrl() = default;
|
||
~RtspUrl() = default;
|
||
bool parse(const string &url);
|
||
|
||
private:
|
||
bool setup(bool,const string &, const string &, const string &);
|
||
};
|
||
|
||
/**
|
||
* rtsp sdp基类
|
||
*/
|
||
class Sdp : public CodecInfo{
|
||
public:
|
||
using Ptr = std::shared_ptr<Sdp>;
|
||
|
||
/**
|
||
* 构造sdp
|
||
* @param sample_rate 采样率
|
||
* @param payload_type pt类型
|
||
*/
|
||
Sdp(uint32_t sample_rate, uint8_t payload_type){
|
||
_sample_rate = sample_rate;
|
||
_payload_type = payload_type;
|
||
}
|
||
|
||
virtual ~Sdp(){}
|
||
|
||
/**
|
||
* 获取sdp字符串
|
||
* @return
|
||
*/
|
||
virtual string getSdp() const = 0;
|
||
|
||
/**
|
||
* 获取pt
|
||
* @return
|
||
*/
|
||
uint8_t getPayloadType() const{
|
||
return _payload_type;
|
||
}
|
||
|
||
/**
|
||
* 获取采样率
|
||
* @return
|
||
*/
|
||
uint32_t getSampleRate() const{
|
||
return _sample_rate;
|
||
}
|
||
|
||
private:
|
||
uint8_t _payload_type;
|
||
uint32_t _sample_rate;
|
||
};
|
||
|
||
/**
|
||
* sdp中除音视频外的其他描述部分
|
||
*/
|
||
class TitleSdp : public Sdp{
|
||
public:
|
||
|
||
/**
|
||
* 构造title类型sdp
|
||
* @param dur_sec rtsp点播时长，0代表直播，单位秒
|
||
* @param header 自定义sdp描述
|
||
* @param version sdp版本
|
||
*/
|
||
TitleSdp(float dur_sec = 0,
|
||
const map<string,string> &header = map<string,string>(),
|
||
int version = 0) : Sdp(0,0){
|
||
_printer << "v=" << version << "\r\n";
|
||
|
||
if(!header.empty()){
|
||
for (auto &pr : header){
|
||
_printer << pr.first << "=" << pr.second << "\r\n";
|
||
}
|
||
} else {
|
||
_printer << "o=- 0 0 IN IP4 0.0.0.0\r\n";
|
||
_printer << "s=Streamed by " << SERVER_NAME << "\r\n";
|
||
_printer << "c=IN IP4 0.0.0.0\r\n";
|
||
_printer << "t=0 0\r\n";
|
||
}
|
||
|
||
if(dur_sec <= 0){
|
||
//直播
|
||
_printer << "a=range:npt=now-\r\n";
|
||
}else{
|
||
//点播
|
||
_printer << "a=range:npt=0-" << dur_sec << "\r\n";
|
||
}
|
||
_printer << "a=control:*\r\n";
|
||
}
|
||
string getSdp() const override {
|
||
return _printer;
|
||
}
|
||
|
||
CodecId getCodecId() const override{
|
||
return CodecInvalid;
|
||
}
|
||
private:
|
||
_StrPrinter _printer;
|
||
};
|
||
|
||
//创建rtp over tcp4个字节的头
|
||
Buffer::Ptr makeRtpOverTcpPrefix(uint16_t size, uint8_t interleaved);
|
||
//创建rtp-rtcp端口对
|
||
void makeSockPair(std::pair<Socket::Ptr, Socket::Ptr> &pair, const string &local_ip);
|
||
//十六进制方式打印ssrc
|
||
string printSSRC(uint32_t ui32Ssrc);
|
||
|
||
} //namespace mediakit
|
||
#endif //RTSP_RTSP_H_
|