/* * Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved. * * This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit). * * Use of this source code is governed by MIT-like 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 "Common/macros.h" #include "Extension/Frame.h" #include "Network/Socket.h" #include #include #include #include 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, CodecJPEG) \ 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; }; // namespace Rtsp #pragma pack(push, 1) class RtpHeader { public: #if __BYTE_ORDER == __BIG_ENDIAN // 版本号，固定为2 [AUTO-TRANSLATED:08ed82fa] // Version number, fixed to 2 uint32_t version : 2; // padding uint32_t padding : 1; // 扩展 [AUTO-TRANSLATED:6189584a] // Extension uint32_t ext : 1; // csrc uint32_t csrc : 4; // mark uint32_t mark : 1; // 负载类型 [AUTO-TRANSLATED:09b49a77] // Payload type uint32_t pt : 7; #else // csrc uint32_t csrc : 4; // 扩展 [AUTO-TRANSLATED:6189584a] // Extension uint32_t ext : 1; // padding uint32_t padding : 1; // 版本号，固定为2 [AUTO-TRANSLATED:08ed82fa] // Version number, fixed to 2 uint32_t version : 2; // 负载类型 [AUTO-TRANSLATED:09b49a77] // Payload type uint32_t pt : 7; // mark uint32_t mark : 1; #endif // 序列号 [AUTO-TRANSLATED:fe421425] // Sequence number uint32_t seq : 16; // 时间戳 [AUTO-TRANSLATED:516f43a9] // Timestamp uint32_t stamp; // ssrc uint32_t ssrc; // 负载，如果有csrc和ext，前面为 4 * csrc + (4 + 4 * ext_len) [AUTO-TRANSLATED:fcd87b19] // Payload, if csrc and ext exist, the front is 4 * csrc + (4 + 4 * ext_len) uint8_t payload; public: // 返回csrc字段字节长度 [AUTO-TRANSLATED:2203e1db] // Return the byte length of the csrc field size_t getCsrcSize() const; // 返回csrc字段首地址，不存在时返回nullptr [AUTO-TRANSLATED:2c89718a] // Return the starting address of the csrc field, return nullptr if it does not exist uint8_t *getCsrcData(); // 返回ext字段字节长度 [AUTO-TRANSLATED:487dcc4e] // Return the byte length of the ext field size_t getExtSize() const; // 返回ext reserved值 [AUTO-TRANSLATED:131355c0] // Return the ext reserved value uint16_t getExtReserved() const; // 返回ext段首地址，不存在时返回nullptr [AUTO-TRANSLATED:6662b24f] // Return the starting address of the ext segment, return nullptr if it does not exist uint8_t *getExtData(); // 返回有效负载指针,跳过csrc、ext [AUTO-TRANSLATED:139a5683] // Return the valid payload pointer, skip csrc, ext uint8_t *getPayloadData(); // 返回有效负载总长度,不包括csrc、ext、padding [AUTO-TRANSLATED:b4ec90d4] // Return the total length of the valid payload, excluding csrc, ext, padding ssize_t getPayloadSize(size_t rtp_size) const; // 打印调试信息 [AUTO-TRANSLATED:f36e06da] // Print debug information std::string dumpString(size_t rtp_size) const; private: // 返回有效负载偏移量 [AUTO-TRANSLATED:47496d37] // Return the valid payload offset size_t getPayloadOffset() const; // 返回padding长度 [AUTO-TRANSLATED:6dabd44d] // Return the padding length size_t getPaddingSize(size_t rtp_size) const; }; #pragma pack(pop) // 此rtp为rtp over tcp形式，需要忽略前4个字节 [AUTO-TRANSLATED:ceb00f83] // This rtp is in the form of rtp over tcp, the first 4 bytes need to be ignored class RtpPacket : public toolkit::BufferRaw { public: using Ptr = std::shared_ptr; enum { kRtpVersion = 2, kRtpHeaderSize = 12, kRtpTcpHeaderSize = 4 }; // 获取rtp头 [AUTO-TRANSLATED:41d58919] // Get the rtp header RtpHeader *getHeader(); const RtpHeader *getHeader() const; // 打印调试信息 [AUTO-TRANSLATED:f36e06da] // Print debug information std::string dumpString() const; // 主机字节序的seq [AUTO-TRANSLATED:67c278dd] // Host byte order 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 [AUTO-TRANSLATED:14cdf080] // Host byte order timestamp, converted to milliseconds uint64_t getStampMS(bool ntp = true) const; // 主机字节序的ssrc [AUTO-TRANSLATED:37d06f6c] // Host byte order ssrc uint32_t getSSRC() const; // 有效负载，跳过csrc、ext [AUTO-TRANSLATED:e4e97453] // Valid payload, skip csrc, ext uint8_t *getPayload(); // 有效负载长度，不包括csrc、ext、padding [AUTO-TRANSLATED:a93e4b08] // Valid payload length, excluding csrc, ext, padding size_t getPayloadSize() const; // 音视频类型 [AUTO-TRANSLATED:dc0fa851] // Audio and video type TrackType type; // 音频为采样率，视频一般为90000 [AUTO-TRANSLATED:8bd1854b] // Audio is the sampling rate, video is generally 90000 uint32_t sample_rate; // ntp时间戳 [AUTO-TRANSLATED:912cacf2] // ntp timestamp uint64_t ntp_stamp; int track_index; static Ptr create(); private: friend class toolkit::ResourcePool_l; RtpPacket() = default; private: // 对象个数统计 [AUTO-TRANSLATED:f4a012d0] // Object Count Statistics toolkit::ObjectStatistic _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; std::string _t; std::string _b; uint16_t _port; float _duration = 0; float _start = 0; float _end = 0; std::map _other; std::multimap _attr; std::string toString(uint16_t port = 0) const; std::string getName() const; std::string getControlUrl(const std::string &base_url) const; public: int _pt = 0xff; int _channel; int _samplerate; TrackType _type; std::string _codec; std::string _fmtp; std::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 [AUTO-TRANSLATED:9513087f] // Timestamp, unit: milliseconds uint32_t _time_stamp = 0; }; class SdpParser { public: using Ptr = std::shared_ptr; SdpParser() = default; SdpParser(const std::string &sdp) { load(sdp); } void load(const std::string &sdp); bool available() const; SdpTrack::Ptr getTrack(TrackType type) const; std::vector getAvailableTrack() const; std::string toString() const; std::string getControlUrl(const std::string &url) const; private: std::vector _track_vec; }; /** * rtsp sdp基类 * rtsp sdp base class * [AUTO-TRANSLATED:05395f48] */ class Sdp { public: using Ptr = std::shared_ptr; /** * 构造sdp * @param sample_rate 采样率 * @param payload_type pt类型 * Construct sdp * @param sample_rate Sampling rate * @param payload_type pt type * [AUTO-TRANSLATED:49f61fff] */ Sdp(uint32_t sample_rate, uint8_t payload_type) { _sample_rate = sample_rate; _payload_type = payload_type; } virtual ~Sdp() = default; /** * 获取sdp字符串 * @return * Get sdp string * @return * [AUTO-TRANSLATED:ca0e2ad7] */ virtual std::string getSdp() const = 0; /** * 获取pt * @return * Get pt * @return * [AUTO-TRANSLATED:872f1b6a] */ uint8_t getPayloadType() const { return _payload_type; } /** * 获取采样率 * @return * Get sampling rate * @return * [AUTO-TRANSLATED:463a0075] */ 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 * Other description part in sdp except audio and video * [AUTO-TRANSLATED:3a1dad65] */ class TitleSdp : public Sdp { public: using Ptr = std::shared_ptr; /** * 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 * Construct title type sdp * @param dur_sec rtsp on-demand duration, 0 represents live broadcast, unit: seconds * @param header Custom sdp description * @param version sdp version * [AUTO-TRANSLATED:bcd1dd5a] */ TitleSdp(float dur_sec = 0, const std::map &header = std::map(), int version = 0); std::string getSdp() const override { return _printer; } float getDuration() const { return _dur_sec; } private: float _dur_sec = 0; toolkit::_StrPrinter _printer; }; // 创建rtp over tcp4个字节的头 [AUTO-TRANSLATED:25031f0d] // Create 4-byte header for rtp over tcp toolkit::Buffer::Ptr makeRtpOverTcpPrefix(uint16_t size, uint8_t interleaved); // 创建rtp-rtcp端口对 [AUTO-TRANSLATED:f8abe61b] // Create rtp-rtcp port pair void makeSockPair(std::pair &pair, const std::string &local_ip, bool re_use_port = false, bool is_udp = true); // 十六进制方式打印ssrc [AUTO-TRANSLATED:c58cd95f] // Print ssrc in hexadecimal format std::string printSSRC(uint32_t ui32Ssrc); bool getSSRC(const char *data, size_t data_len, uint32_t &ssrc); bool isRtp(const char *buf, size_t size); bool isRtcp(const char *buf, size_t size); } // namespace mediakit #endif // RTSP_RTSP_H_