a-zlm/webrtc/RtpMap.h

/*
 * 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 ZLMEDIAKIT_RTPMAP_H
#define ZLMEDIAKIT_RTPMAP_H

#include <set>
#include <map>
#include <string>
#include <vector>
#include <memory>
#include <iostream>
#include <iomanip>
#include <cassert>
#include "Extension/Frame.h"

namespace mediakit {

class RtpMap {
public:
    using Ptr = std::shared_ptr<RtpMap>;
    RtpMap(std::string code_name, uint8_t payload, uint32_t clock_rate)
        : _code_name(std::move(code_name))
        , _payload(payload)
        , _clock_rate(clock_rate) {}
    virtual ~RtpMap() = default;

    virtual TrackType getType() = 0;

    const std::map<std::string /*key*/, std::string /*value*/> &getFmtp() const { return _fmtp; }

    const std::string &getCodeName() const { return _code_name; }
    uint8_t getPayload() const { return _payload; }
    uint32_t getClockRate() const { return _clock_rate; }

protected:
    std::map<std::string /*key*/, std::string /*value*/> _fmtp;
    std::string _code_name;
    uint8_t _payload;
    uint32_t _clock_rate;
};

class VideoRtpMap : public RtpMap {
public:
    VideoRtpMap(std::string code_name, uint8_t payload, uint32_t clock_rate)
        : RtpMap(std::move(code_name), payload, clock_rate) {};

    TrackType getType() override { return TrackVideo; }
};

class AudioRtpMap : public RtpMap {
public:
    AudioRtpMap( std::string code_name, uint8_t payload, uint32_t clock_rate)
       : RtpMap(std::move(code_name), payload, clock_rate) {};

    TrackType getType() override { return TrackAudio; };
};

#define H264_PROFILE_IDC_MAP(XX) \
    XX(PROFILE_H264_BASELINE,  66,  "baseline")      \
    XX(PROFILE_H264_MAIN,      77,  "main")          \
    XX(PROFILE_H264_HIGH,      100, "high")          \
    XX(PROFILE_H264_HIGH10,    110, "high10")        \
    XX(PROFILE_H264_HIGH422,   122, "high422")       \
    XX(PROFILE_H264_HIGH444,   244, "high444")       \

typedef enum {
    H264ProfileIdcInvalid = -1,
#define XX(name, value, str) name = value,
    H264_PROFILE_IDC_MAP(XX)
#undef XX
    H264ProfileIdcMax
} H264ProfileIdc;

#define H264_PROFILE_LEVEL_MAP(XX) \
    XX(10) \
    XX(20) \
    XX(30) \
    XX(31) \
    XX(40) \
    XX(41) \
    XX(50) \
    XX(51)

typedef enum {
    H264ProfileLevelInvalid = -1,
#define XX(value) H264_PROFILE_LEVEL_##value = value,
    H264_PROFILE_LEVEL_MAP(XX)
#undef XX
    H264ProfileLevelMax
} H264ProfileLevel;

class H264RtpMap : public VideoRtpMap {
public:
    H264RtpMap(uint8_t payload, uint32_t clock_rate, H264ProfileIdc profile_idc)
        : VideoRtpMap("H264", payload, clock_rate)
        , _profile_idc(profile_idc) {
        _fmtp.emplace("level-asymmetry-allowed", "1");
        _fmtp.emplace("packetization-mode", "1");

        toolkit::_StrPrinter printer;
        printer << std::setw(2) << std::setfill('0') << std::hex << _profile_idc;
        printer << std::setw(2) << std::setfill('0') << std::hex << _profile_iop;
        printer << std::setw(2) << std::setfill('0') << std::hex << _profile_level;
        _fmtp.emplace("profile-level-id", printer);
    };

private:
    H264ProfileIdc _profile_idc;
    int _profile_iop = 0;
    H264ProfileLevel _profile_level = H264_PROFILE_LEVEL_31;
};

#define H265_PROFILE_IDC_MAP(XX)                                                    \
    XX(PROFILE_H265_MAIN, 1, "main")                                                \
    XX(PROFILE_H265_MAIN10, 2, "main10")                                            \
    XX(PROFILE_H265_MAINSTILL, 3, "mainstill")                                      \
    XX(PROFILE_H265_RANGE_EXTS, 4, "RangeExtensions")                               \
    XX(PROFILE_H265_HIGH_THROUGHPUT, 5, "HighThroughput")                           \
    XX(PROFILE_H265_MULTIVIEW, 6, "MultiviewMain")                                  \
    XX(PROFILE_H265_SCALABLE_MAIN, 7, "ScalableMain")                               \
    XX(PROFILE_H265_3DMAIN, 8, "3dMain")                                            \
    XX(PROFILE_H265_SCREEN, 9, "ScreenContentCoding")                               \
    XX(PROFILE_H265_SCALABLE_RANGE_EXTENSIONS, 10, "ScalableRangeExtensions")       \
    XX(PROFILE_H265_HIGH_SCREEN, 11, "HighThroughputScreenContentCoding")

typedef enum {
    H265ProfileIdcInvalid = -1,
#define XX(name, value, str) name = value,
    H265_PROFILE_IDC_MAP(XX)
#undef XX
    H265ProfileIdcMax
} H265ProfileIdc;

#define H265_PROFILE_LEVEL_MAP(XX) \
    XX(30) \
    XX(60) \
    XX(63) \
    XX(90) \
    XX(93) \
    XX(120) \
    XX(123) \
    XX(150) \
    XX(153) \
    XX(156) \
    XX(180) \
    XX(183) \
    XX(186)

typedef enum {
    H265ProfileLevelInvalid = -1,
#define XX(value) H265_PROFILE_LEVEL_##value = value,
    H265_PROFILE_LEVEL_MAP(XX)
#undef XX
    H265ProfileLevelMax
} H265ProfileLevel;

class H265RtpMap : public VideoRtpMap {
public:
    H265RtpMap(uint8_t payload, uint32_t clock_rate, H265ProfileIdc profile_idc)
        : VideoRtpMap("H265", payload, clock_rate)
        , _profile_idc(profile_idc) {
        _fmtp.emplace("level-asymmetry-allowed", "1");
        _fmtp.emplace("packetization-mode", "1");

        _fmtp.emplace("profile-id", std::to_string(_profile_idc));
        _fmtp.emplace("tier-flag", std::to_string(_tier_flag));
        _fmtp.emplace("level-id", std::to_string(_profile_level));
    }

private:
    H265ProfileIdc _profile_idc;
    int _tier_flag = 0; // 0: main tier; 1: high tier
    H265ProfileLevel _profile_level = H265_PROFILE_LEVEL_30;
};

class VP9RtpMap : public VideoRtpMap {
public:
    VP9RtpMap(uint8_t payload, uint32_t clock_rate, int profile_id)
        : VideoRtpMap("VP9", payload, clock_rate)
        , _profile_id(profile_id) {
        _fmtp.emplace("profile-id", std::to_string(_profile_id));
    };

private:
    int _profile_id = 1; // 0-3
};

class AV1RtpMap : public VideoRtpMap {
public:
    AV1RtpMap(uint8_t payload, uint32_t clock_rate, int profile_id)
        : VideoRtpMap("AV1", payload, clock_rate)
        , _profile_id(profile_id) {
        // a=fmtp:45 level-idx=5;profile=0;tier=0
        _fmtp.emplace("profile-id", std::to_string(_profile_id));
    };

private:
    int _profile_id = 0; // 0-2
};
} // namespace mediakit

#endif // ZLMEDIAKIT_RTPMAP_H