修复默认音频参数相关bug

部分支持VP8/VP9/AV1/JPEG/MP3/H266/ADPCM/SVAC/G722/G723/G729

README.md

@@ -37,6 +37,7 @@
 - [谁在使用zlmediakit?](https://github.com/ZLMediaKit/ZLMediaKit/issues/511)
 - 全面支持ipv6网络
 - 支持多轨道模式(一个流中多个视频/音频)
+- 全协议支持H264/H265/AAC/G711/OPUS，部分支持VP8/VP9/AV1/JPEG/MP3/H266/ADPCM/SVAC/G722/G723/G729
 
 ## 项目定位
 

ext-codec/AAC.cpp

@@ -373,10 +373,6 @@ Track::Ptr AACTrack::clone() const {
 }
 
 Sdp::Ptr AACTrack::getSdp(uint8_t payload_type) const {
-    if (!ready()) {
-        WarnL << getCodecName() << " Track未准备好";
-        return nullptr;
-    }
     return std::make_shared<AACSdp>(getExtraData()->toString(), payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() >> 10);
 }
 

ext-codec/G711.cpp

@@ -19,70 +19,14 @@ using namespace toolkit;
 
 namespace mediakit {
 
-/**
- * G711类型SDP
- * G711 type SDP
- 
- * [AUTO-TRANSLATED:ea72d60a]
- */
-class G711Sdp : public Sdp {
-public:
-    /**
-     * G711采样率固定为8000
-     * @param codecId G711A G711U
-     * @param payload_type rtp payload type
-     * @param sample_rate 音频采样率
-     * @param channels 通道数
-     * @param bitrate 比特率
-     * G711 sampling rate is fixed at 8000
-     * @param codecId G711A G711U
-     * @param payload_type rtp payload type
-     * @param sample_rate audio sampling rate
-     * @param channels number of channels
-     * @param bitrate bitrate
-     
-     * [AUTO-TRANSLATED:5ea4b771]
-     */
-    G711Sdp(CodecId codecId, int payload_type, int sample_rate, int channels, int bitrate)
-        : Sdp(sample_rate, payload_type) {
-        _printer << "m=audio 0 RTP/AVP " << payload_type << "\r\n";
-        if (bitrate) {
-            _printer << "b=AS:" << bitrate << "\r\n";
-        }
-        _printer << "a=rtpmap:" << payload_type << " " << getCodecName(codecId) << "/" << sample_rate  << "/" << channels << "\r\n";
-    }
-
-    string getSdp() const override {
-        return _printer;
-    }
-
-private:
-    _StrPrinter _printer;
-};
-
 Track::Ptr G711Track::clone() const {
     return std::make_shared<G711Track>(*this);
 }
 
 Sdp::Ptr G711Track::getSdp(uint8_t payload_type) const {
-    if (!ready()) {
-        WarnL << getCodecName() << " Track未准备好";
-        return nullptr;
+    return std::make_shared<DefaultSdp>(payload_type, *this);
 }
 
-    const auto codec = getCodecId();
-    const auto sample_rate = getAudioSampleRate();
-    const auto audio_channel = getAudioChannel();
-    const auto bitrate = getBitRate() >> 10;
-    if (sample_rate == 8000 && audio_channel == 1) {
-        // https://datatracker.ietf.org/doc/html/rfc3551#section-6
-        payload_type = (codec == CodecG711U) ? Rtsp::PT_PCMU : Rtsp::PT_PCMA;
-    }
-
-    return std::make_shared<G711Sdp>(codec, payload_type, sample_rate, audio_channel, bitrate);
-}
-
-
 namespace {
 
 CodecId getCodecA() {
@@ -94,7 +38,7 @@ CodecId getCodecU() {
 }
 
 Track::Ptr getTrackByCodecId_l(CodecId codec, int sample_rate, int channels, int sample_bit) {
-    return (sample_rate && channels && sample_bit) ? std::make_shared<G711Track>(codec, sample_rate, channels, sample_bit) : nullptr;
+    return std::make_shared<G711Track>(codec, sample_rate, 1, 16);
 }
 
 Track::Ptr getTrackByCodecIdA(int sample_rate, int channels, int sample_bit) {

ext-codec/H264.cpp

@@ -357,10 +357,6 @@ private:
 };
 
 Sdp::Ptr H264Track::getSdp(uint8_t payload_type) const {
-    if (!ready()) {
-        WarnL << getCodecName() << " Track未准备好";
-        return nullptr;
-    }
     return std::make_shared<H264Sdp>(_sps, _pps, payload_type, getBitRate() >> 10);
 }
 

ext-codec/H265.cpp

@@ -263,10 +263,6 @@ private:
 };
 
 Sdp::Ptr H265Track::getSdp(uint8_t payload_type) const {
-    if (!ready()) {
-        WarnL << getCodecName() << " Track未准备好";
-        return nullptr;
-    }
     return std::make_shared<H265Sdp>(_vps, _sps, _pps, payload_type, getBitRate() >> 10);
 }
 

ext-codec/JPEG.cpp

@@ -31,25 +31,9 @@ void JPEGTrack::getVideoResolution(const uint8_t *buf, int len) {
     }
 }
 
-class JPEGSdp : public Sdp {
-public:
-    JPEGSdp(int bitrate) : Sdp(90000, Rtsp::PT_JPEG) {
-        _printer << "m=video 0 RTP/AVP " << (int)getPayloadType() << "\r\n";
-        if (bitrate) {
-            _printer << "b=AS:" << bitrate << "\r\n";
+Sdp::Ptr JPEGTrack::getSdp(uint8_t pt) const {
+    return std::make_shared<DefaultSdp>(pt, *this);
 }
-    }
-
-    std::string getSdp() const { return _printer; }
-
-private:
-    _StrPrinter _printer;
-};
-
-Sdp::Ptr JPEGTrack::getSdp(uint8_t) const {
-    return std::make_shared<JPEGSdp>(getBitRate() >> 10);
-}
-
 
 namespace {
 

ext-codec/L16.cpp

@@ -18,50 +18,8 @@ using namespace toolkit;
 
 namespace mediakit {
 
-/**
- * L16类型SDP
- * L16 type SDP
- 
- * [AUTO-TRANSLATED:11b1196d]
- */
-class L16Sdp : public Sdp {
-public:
-    /**
-     * L16采样位数固定为16位
-     * @param payload_type rtp payload type
-     * @param channels 通道数
-     * @param sample_rate 音频采样率
-     * @param bitrate 比特率
-     * L16 sampling bit width is fixed to 16 bits
-     * @param payload_type rtp payload type
-     * @param channels number of channels
-     * @param sample_rate audio sampling rate
-     * @param bitrate bitrate
-     
-     
-     * [AUTO-TRANSLATED:7a08a400]
-     */
-    L16Sdp(int payload_type, int sample_rate, int channels, int bitrate) : Sdp(sample_rate, payload_type) {
-        _printer << "m=audio 0 RTP/AVP " << payload_type << "\r\n";
-        if (bitrate) {
-            _printer << "b=AS:" << bitrate << "\r\n";
-        }
-        _printer << "a=rtpmap:" << payload_type << " " << getCodecName(CodecL16) << "/" << sample_rate  << "/" << channels << "\r\n";
-    }
-
-    string getSdp() const override { return _printer; }
-
-private:
-    _StrPrinter _printer;
-};
-
 Sdp::Ptr L16Track::getSdp(uint8_t payload_type) const {
-    WarnL << "Enter  L16Track::getSdp function";
-    if (!ready()) {
-        WarnL << getCodecName() << " Track未准备好";
-        return nullptr;
-    }
-    return std::make_shared<L16Sdp>(payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() >> 10);
+    return std::make_shared<DefaultSdp>(payload_type, *this);
 }
 
 Track::Ptr L16Track::clone() const {

ext-codec/Opus.cpp

@@ -18,51 +18,9 @@ using namespace toolkit;
 
 namespace mediakit {
 
-/**
- * Opus类型SDP
- * Opus type SDP
- 
- * [AUTO-TRANSLATED:6c0a72ed]
- */
-class OpusSdp : public Sdp {
-public:
-    /**
-     * 构造opus sdp
-     * @param payload_type rtp payload type
-     * @param sample_rate 音频采样率
-     * @param channels 通道数
-     * @param bitrate 比特率
-     * Construct opus sdp
-     * @param payload_type rtp payload type
-     * @param sample_rate audio sample rate
-     * @param channels number of channels
-     * @param bitrate bitrate
-     
-     
-     * [AUTO-TRANSLATED:40713e9d]
-     */
-    OpusSdp(int payload_type, int sample_rate, int channels, int bitrate) : Sdp(sample_rate, payload_type) {
-        _printer << "m=audio 0 RTP/AVP " << payload_type << "\r\n";
-        if (bitrate) {
-            _printer << "b=AS:" << bitrate << "\r\n";
-        }
-        _printer << "a=rtpmap:" << payload_type << " " << getCodecName(CodecOpus) << "/" << sample_rate  << "/" << channels << "\r\n";
-    }
-
-    string getSdp() const override {
-        return _printer;
-    }
-
-private:
-    _StrPrinter _printer;
-};
 
 Sdp::Ptr OpusTrack::getSdp(uint8_t payload_type) const {
-    if (!ready()) {
-        WarnL << getCodecName() << " Track未准备好";
-        return nullptr;
-    }
-    return std::make_shared<OpusSdp>(payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() >> 10);
+    return std::make_shared<DefaultSdp>(payload_type, *this);
 }
 
 namespace {

src/Extension/Factory.cpp

@@ -10,6 +10,8 @@
 
 #include "Factory.h"
 #include "Rtmp/Rtmp.h"
+#include "CommonRtmp.h"
+#include "CommonRtp.h"
 #include "Common/config.h"
 
 using namespace std;
@@ -19,15 +21,6 @@ namespace mediakit {
 
 static std::unordered_map<int, const CodecPlugin *> s_plugins;
 
-extern CodecPlugin h264_plugin;
-extern CodecPlugin h265_plugin;
-extern CodecPlugin jpeg_plugin;
-extern CodecPlugin aac_plugin;
-extern CodecPlugin opus_plugin;
-extern CodecPlugin g711a_plugin;
-extern CodecPlugin g711u_plugin;
-extern CodecPlugin l16_plugin;
-
 REGISTER_CODEC(h264_plugin);
 REGISTER_CODEC(h265_plugin);
 REGISTER_CODEC(jpeg_plugin);
@@ -51,8 +44,7 @@ Track::Ptr Factory::getTrackBySdp(const SdpTrack::Ptr &track) {
     }
     auto it = s_plugins.find(codec);
     if (it == s_plugins.end()) {
-        WarnL << "Unsupported codec: " << track->getName();
-        return nullptr;
+        return getTrackByCodecId(codec, track->_samplerate, track->_channel);
     }
     return it->second->getTrackBySdp(track);
 }
@@ -69,8 +61,8 @@ Track::Ptr Factory::getTrackByAbstractTrack(const Track::Ptr &track) {
 RtpCodec::Ptr Factory::getRtpEncoderByCodecId(CodecId codec, uint8_t pt) {
     auto it = s_plugins.find(codec);
     if (it == s_plugins.end()) {
-        WarnL << "Unsupported codec: " << getCodecName(codec);
-        return nullptr;
+        WarnL << "Unsupported codec: " << getCodecName(codec) << ", use CommonRtpEncoder";
+        return std::make_shared<CommonRtpEncoder>();
     }
     return it->second->getRtpEncoderByCodecId(pt);
 }
@@ -78,8 +70,8 @@ RtpCodec::Ptr Factory::getRtpEncoderByCodecId(CodecId codec, uint8_t pt) {
 RtpCodec::Ptr Factory::getRtpDecoderByCodecId(CodecId codec) {
     auto it = s_plugins.find(codec);
     if (it == s_plugins.end()) {
-        WarnL << "Unsupported codec: " << getCodecName(codec);
-        return nullptr;
+        WarnL << "Unsupported codec: " << getCodecName(codec) << ", use CommonRtpDecoder";
+        return std::make_shared<CommonRtpDecoder>(codec, 10 * 1024);
     }
     return it->second->getRtpDecoderByCodecId();
 }
@@ -117,8 +109,18 @@ static CodecId getVideoCodecIdByAmf(const AMFValue &val){
 Track::Ptr Factory::getTrackByCodecId(CodecId codec, int sample_rate, int channels, int sample_bit) {
     auto it = s_plugins.find(codec);
     if (it == s_plugins.end()) {
-        WarnL << "Unsupported codec: " << getCodecName(codec);
-        return nullptr;
+        auto type = mediakit::getTrackType(codec);
+        switch (type) {
+            case TrackAudio: {
+                WarnL << "Unsupported codec: " << getCodecName(codec) << ", use default audio track";
+                return std::make_shared<AudioTrackImp>(codec, sample_rate, channels, sample_bit);
+            }
+            case TrackVideo: {
+                WarnL << "Unsupported codec: " << getCodecName(codec) << ", use default video track";
+                return std::make_shared<VideoTrackImp>(codec, 0, 0, 0);
+            }
+            default: WarnL << "Unsupported codec: " << getCodecName(codec); return nullptr;
+        }
     }
     return it->second->getTrackByCodecId(sample_rate, channels, sample_bit);
 }
@@ -145,13 +147,14 @@ static CodecId getAudioCodecIdByAmf(const AMFValue &val) {
         auto type_id = (RtmpAudioCodec)val.as_integer();
         switch (type_id) {
             case RtmpAudioCodec::aac: return CodecAAC;
+            case RtmpAudioCodec::mp3: return CodecMP3;
+            case RtmpAudioCodec::adpcm: return CodecADPCM;
             case RtmpAudioCodec::g711a: return CodecG711A;
             case RtmpAudioCodec::g711u: return CodecG711U;
             case RtmpAudioCodec::opus: return CodecOpus;
             default: WarnL << "Unsupported codec: " << (int)type_id; return CodecInvalid;
         }
     }
-
     return CodecInvalid;
 }
 
@@ -166,8 +169,8 @@ Track::Ptr Factory::getAudioTrackByAmf(const AMFValue& amf, int sample_rate, int
 RtmpCodec::Ptr Factory::getRtmpDecoderByTrack(const Track::Ptr &track) {
     auto it = s_plugins.find(track->getCodecId());
     if (it == s_plugins.end()) {
-        WarnL << "Unsupported codec: " << track->getCodecName();
-        return nullptr;
+        WarnL << "Unsupported codec: " << track->getCodecName() << ", use CommonRtmpDecoder";
+        return std::make_shared<CommonRtmpDecoder>(track);
     }
     return it->second->getRtmpDecoderByTrack(track);
 }
@@ -175,8 +178,8 @@ RtmpCodec::Ptr Factory::getRtmpDecoderByTrack(const Track::Ptr &track) {
 RtmpCodec::Ptr Factory::getRtmpEncoderByTrack(const Track::Ptr &track) {
     auto it = s_plugins.find(track->getCodecId());
     if (it == s_plugins.end()) {
-        WarnL << "Unsupported codec: " << track->getCodecName();
-        return nullptr;
+        WarnL << "Unsupported codec: " << track->getCodecName() << ", use CommonRtmpEncoder";
+        return std::make_shared<CommonRtmpEncoder>(track);
     }
     return it->second->getRtmpEncoderByTrack(track);
 }
@@ -190,6 +193,8 @@ AMFValue Factory::getAmfByCodecId(CodecId codecId) {
         case CodecG711A: return AMFValue((int)RtmpAudioCodec::g711a);
         case CodecG711U: return AMFValue((int)RtmpAudioCodec::g711u);
         case CodecOpus: return AMFValue((int)RtmpAudioCodec::opus);
+        case CodecADPCM: return AMFValue((int)RtmpAudioCodec::adpcm);
+        case CodecMP3: return AMFValue((int)RtmpAudioCodec::mp3);
         case CodecAV1: return AMFValue((int)RtmpVideoCodec::fourcc_av1);
         case CodecVP9: return AMFValue((int)RtmpVideoCodec::fourcc_vp9);
         default: return AMFValue(AMF_NULL);
@@ -215,4 +220,3 @@ Frame::Ptr Factory::getFrameFromBuffer(CodecId codec, Buffer::Ptr data, uint64_t
 }
 
 } // namespace mediakit
-

src/Extension/Factory.h

@@ -23,6 +23,7 @@
 #define REGISTER_STATIC_VAR(var_name, line) REGISTER_STATIC_VAR_INNER(var_name, line)
 
 #define REGISTER_CODEC(plugin) \
+extern CodecPlugin plugin;     \
 static toolkit::onceToken REGISTER_STATIC_VAR(s_token, __LINE__) ([]() { \
     Factory::registerPlugin(plugin); \
 });
@@ -64,7 +65,7 @@ public:
      
      * [AUTO-TRANSLATED:397b982e]
      */
-    static Track::Ptr getTrackByCodecId(CodecId codecId, int sample_rate = 0, int channels = 0, int sample_bit = 0);
+    static Track::Ptr getTrackByCodecId(CodecId codecId, int sample_rate = 0, int channels = 1, int sample_bit = 16);
 
     // //////////////////////////////rtsp相关//////////////////////////////////  [AUTO-TRANSLATED:884055ec]
     // //////////////////////////////rtsp相关//////////////////////////////////

src/Extension/Frame.h

@@ -43,7 +43,18 @@ typedef enum {
     XX(CodecVP8,   TrackVideo, 7, "VP8", PSI_STREAM_VP8, MOV_OBJECT_VP8)             \
     XX(CodecVP9,   TrackVideo, 8, "VP9", PSI_STREAM_VP9, MOV_OBJECT_VP9)             \
     XX(CodecAV1,   TrackVideo, 9, "AV1", PSI_STREAM_AV1, MOV_OBJECT_AV1)             \
-    XX(CodecJPEG,  TrackVideo, 10, "JPEG", PSI_STREAM_JPEG_2000, MOV_OBJECT_JPEG)
+    XX(CodecJPEG,  TrackVideo, 10, "JPEG", PSI_STREAM_JPEG_2000, MOV_OBJECT_JPEG)    \
+    XX(CodecH266,  TrackVideo, 11, "H266", PSI_STREAM_H266, MOV_OBJECT_H266)         \
+    XX(CodecTS,    TrackVideo, 12, "MP2T", PSI_STREAM_RESERVED, MOV_OBJECT_NONE)     \
+    XX(CodecPS,    TrackVideo, 13, "MPEG", PSI_STREAM_RESERVED, MOV_OBJECT_NONE)     \
+    XX(CodecMP3,   TrackAudio, 14, "MP3",  PSI_STREAM_MP3, MOV_OBJECT_MP3)           \
+    XX(CodecADPCM, TrackAudio, 15, "ADPCM", PSI_STREAM_RESERVED, MOV_OBJECT_NONE)    \
+    XX(CodecSVACV, TrackVideo, 16, "SVACV", PSI_STREAM_VIDEO_SVAC, MOV_OBJECT_NONE)  \
+    XX(CodecSVACA, TrackAudio, 17, "SVACA", PSI_STREAM_AUDIO_SVAC, MOV_OBJECT_NONE)  \
+    XX(CodecG722,  TrackAudio, 18, "G722", PSI_STREAM_AUDIO_G722, MOV_OBJECT_NONE)   \
+    XX(CodecG723,  TrackAudio, 19, "G723", PSI_STREAM_AUDIO_G723, MOV_OBJECT_NONE)   \
+    XX(CodecG728,  TrackAudio, 20, "G728", PSI_STREAM_RESERVED, MOV_OBJECT_NONE)     \
+    XX(CodecG729,  TrackAudio, 21, "G729", PSI_STREAM_AUDIO_G729, MOV_OBJECT_NONE)
 
 typedef enum {
     CodecInvalid = -1,

src/Extension/Track.cpp

@@ -0,0 +1,26 @@
+/*
+ * 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.
+ */
+
+#include "Track.h"
+#include "Util/util.h"
+
+using namespace std;
+using namespace toolkit;
+
+namespace mediakit {
+
+Sdp::Ptr AudioTrackImp::getSdp(uint8_t payload_type) const {
+    return std::make_shared<DefaultSdp>(payload_type, *this);
+}
+Sdp::Ptr VideoTrackImp::getSdp(uint8_t payload_type) const {
+    return std::make_shared<DefaultSdp>(payload_type, *this);
+}
+
+} // namespace mediakit

src/Extension/Track.h

@@ -201,7 +201,7 @@ public:
     bool ready() const override { return true; }
 
     Track::Ptr clone() const override { return std::make_shared<VideoTrackImp>(*this); }
-    Sdp::Ptr getSdp(uint8_t payload_type) const override { return nullptr; }
+    Sdp::Ptr getSdp(uint8_t payload_type) const override;
     CodecId getCodecId() const override { return _codec_id; }
 
 private:
@@ -298,7 +298,7 @@ public:
      * [AUTO-TRANSLATED:9af5a0a4]
      */
     int getAudioSampleRate() const override{
-        return _sample_rate;
+        return _sample_rate ? _sample_rate : RtpPayload::getClockRateByCodec(_codecid);
     }
 
     /**
@@ -308,7 +308,7 @@ public:
      * [AUTO-TRANSLATED:5fedc65d]
      */
     int getAudioSampleBit() const override{
-        return _sample_bit;
+        return _sample_bit ? _sample_bit : 16;
     }
 
     /**
@@ -318,11 +318,11 @@ public:
      * [AUTO-TRANSLATED:2613b317]
      */
     int getAudioChannel() const override{
-        return _channels;
+        return _channels ? _channels : 1;
     }
 
     Track::Ptr clone() const override { return std::make_shared<AudioTrackImp>(*this); }
-    Sdp::Ptr getSdp(uint8_t payload_type) const override { return nullptr; }
+    Sdp::Ptr getSdp(uint8_t payload_type) const override;
 
 private:
     CodecId _codecid;

src/Rtmp/Rtmp.cpp

@@ -68,29 +68,23 @@ uint8_t getAudioRtmpFlags(const Track::Ptr &track) {
             auto iChannel = audioTrack->getAudioChannel();
             auto iSampleBit = audioTrack->getAudioSampleBit();
 
-            uint8_t flvAudioType;
+            auto amf = Factory::getAmfByCodecId(track->getCodecId());
+            if (!amf) {
+                WarnL << "该编码格式不支持转换为RTMP: " << track->getCodecName();
+                return 0;
+            }
+            uint8_t flvAudioType = amf.as_integer();
             switch (track->getCodecId()) {
-                case CodecG711A: flvAudioType = (uint8_t)RtmpAudioCodec::g711a; break;
-                case CodecG711U: flvAudioType = (uint8_t)RtmpAudioCodec::g711u; break;
+                case CodecAAC:
                 case CodecOpus: {
-                    flvAudioType = (uint8_t)RtmpAudioCodec::opus;
-                    // opus不通过flags获取音频相关信息  [AUTO-TRANSLATED:0ddf328b]
-                    // opus does not get audio information through flags
+                    // opus/aac不通过flags获取音频相关信息  [AUTO-TRANSLATED:0ddf328b]
+                    // opus/aac does not get audio information through flags
                     iSampleRate = 44100;
                     iSampleBit = 16;
                     iChannel = 2;
                     break;
                 }
-                case CodecAAC: {
-                    flvAudioType = (uint8_t)RtmpAudioCodec::aac;
-                    // aac不通过flags获取音频相关信息  [AUTO-TRANSLATED:63ac5081]
-                    // aac does not get audio information through flags
-                    iSampleRate = 44100;
-                    iSampleBit = 16;
-                    iChannel = 2;
-                    break;
-                }
-                default: WarnL << "该编码格式不支持转换为RTMP: " << track->getCodecName(); return 0;
+                default: break;
             }
 
             uint8_t flvSampleRate;

src/Rtmp/Rtmp.h

@@ -371,6 +371,8 @@ enum class RtmpAudioCodec : uint8_t {
     14 = MP3 8 kHz
     15 = Device-specific sound
      */
+    adpcm = 1,
+    mp3 = 2,
     g711a = 7,
     g711u = 8,
     aac = 10,

src/Rtp/Decoder.cpp

@@ -90,7 +90,8 @@ void DecoderImp::onStream(int stream, int codecid, const void *extra, size_t byt
     }
     // G711传统只支持 8000/1/16的规格，FFmpeg貌似做了扩展，但是这里不管它了  [AUTO-TRANSLATED:851813f7]
     // G711 traditionally only supports the 8000/1/16 specification. FFmpeg seems to have extended it, but we'll ignore that here.
-    auto track = Factory::getTrackByCodecId(getCodecByMpegId(codecid), 8000, 1, 16);
+    auto codec = getCodecByMpegId(codecid);
+    auto track= Factory::getTrackByCodecId(codec);
     if (track) {
         onTrack(stream, std::move(track));
     }
@@ -113,7 +114,7 @@ void DecoderImp::onDecode(int stream, int codecid, int flags, int64_t pts, int64
     }
     auto &ref = _tracks[stream];
     if (!ref.first) {
-        onTrack(stream, Factory::getTrackByCodecId(codec, 8000, 1, 16));
+        onTrack(stream, Factory::getTrackByCodecId(codec));
     }
     if (!ref.first) {
         WarnL << "Unsupported codec :" << getCodecName(codec);

src/Rtp/GB28181Process.cpp

@@ -83,29 +83,22 @@ bool GB28181Process::inputRtp(bool, const char *data, size_t data_len) {
             // Prevent too many pt types from causing memory overflow
             WarnL << "Rtp payload type more than 2 types: " << _rtp_receiver.size();
         }
-        switch (pt) {
-            case Rtsp::PT_PCMA:
-            case Rtsp::PT_PCMU: {
-                // CodecG711U or CodecG711A
-                ref = std::make_shared<RtpReceiverImp>(8000, [this](RtpPacket::Ptr rtp) { onRtpSorted(std::move(rtp)); });
-                auto track = Factory::getTrackByCodecId(pt == Rtsp::PT_PCMU ? CodecG711U : CodecG711A, 8000, 1, 16);
+
+        do {
+            if (pt < 96) {
+                auto codec = RtpPayload::getCodecId(pt);
+                if (codec != CodecInvalid && codec != CodecTS) {
+                    auto sample_rate = RtpPayload::getClockRate(pt);
+                    auto channels = RtpPayload::getAudioChannel(pt);
+                    ref = std::make_shared<RtpReceiverImp>(sample_rate, [this](RtpPacket::Ptr rtp) { onRtpSorted(std::move(rtp)); });
+                    auto track = Factory::getTrackByCodecId(codec, sample_rate, channels);
                     CHECK(track);
                     track->setIndex(pt);
                     _interface->addTrack(track);
                     _rtp_decoder[pt] = Factory::getRtpDecoderByCodecId(track->getCodecId());
                     break;
                 }
-            case Rtsp::PT_JPEG: {
-                // mjpeg
-                ref = std::make_shared<RtpReceiverImp>(90000, [this](RtpPacket::Ptr rtp) { onRtpSorted(std::move(rtp)); });
-                auto track = Factory::getTrackByCodecId(CodecJPEG);
-                CHECK(track);
-                track->setIndex(pt);
-                _interface->addTrack(track);
-                _rtp_decoder[pt] = Factory::getRtpDecoderByCodecId(track->getCodecId());
-                break;
             }
-            default: {
             if (pt == opus_pt) {
                 // opus负载  [AUTO-TRANSLATED:defa6a8d]
                 // opus payload
@@ -115,7 +108,9 @@ bool GB28181Process::inputRtp(bool, const char *data, size_t data_len) {
                 track->setIndex(pt);
                 _interface->addTrack(track);
                 _rtp_decoder[pt] = Factory::getRtpDecoderByCodecId(track->getCodecId());
-                } else if (pt == h265_pt) {
+                break;
+            }
+            if (pt == h265_pt) {
                 // H265负载  [AUTO-TRANSLATED:61fbcf7f]
                 // H265 payload
                 ref = std::make_shared<RtpReceiverImp>(90000, [this](RtpPacket::Ptr rtp) { onRtpSorted(std::move(rtp)); });
@@ -124,7 +119,9 @@ bool GB28181Process::inputRtp(bool, const char *data, size_t data_len) {
                 track->setIndex(pt);
                 _interface->addTrack(track);
                 _rtp_decoder[pt] = Factory::getRtpDecoderByCodecId(track->getCodecId());
-                } else if (pt == h264_pt) {
+                break;
+            }
+            if (pt == h264_pt) {
                 // H264负载  [AUTO-TRANSLATED:6f3fbb0d]
                 // H264 payload
                 ref = std::make_shared<RtpReceiverImp>(90000, [this](RtpPacket::Ptr rtp) { onRtpSorted(std::move(rtp)); });
@@ -133,7 +130,9 @@ bool GB28181Process::inputRtp(bool, const char *data, size_t data_len) {
                 track->setIndex(pt);
                 _interface->addTrack(track);
                 _rtp_decoder[pt] = Factory::getRtpDecoderByCodecId(track->getCodecId());
-                } else {
+                break;
+            }
+
             if (pt != Rtsp::PT_MP2T && pt != ps_pt) {
                 WarnL << "Unknown rtp payload type(" << (int)pt << "), decode it as mpeg-ps or mpeg-ts";
             }
@@ -152,10 +151,8 @@ bool GB28181Process::inputRtp(bool, const char *data, size_t data_len) {
                     }
                 });
             }
-                }
-                break;
-            }
-        }
+        } while (false);
+
         // 设置frame回调  [AUTO-TRANSLATED:dec7590f]
         // Set frame callback
         _rtp_decoder[pt]->addDelegate([this, pt](const Frame::Ptr &frame) {
@@ -169,7 +166,12 @@ bool GB28181Process::inputRtp(bool, const char *data, size_t data_len) {
 }
 
 void GB28181Process::onRtpDecode(const Frame::Ptr &frame) {
-    if (frame->getCodecId() != CodecInvalid) {
+    switch (frame->getCodecId()) {
+        case CodecInvalid:
+        case CodecTS:
+        case CodecPS: break;
+
+        default:
             // 这里不是ps或ts  [AUTO-TRANSLATED:6f79ac69]
             // This is not ps or ts
             _interface->inputFrame(frame);

src/Rtsp/Rtsp.cpp

@@ -12,9 +12,10 @@
 #include <cinttypes>
 #include <random>
 #include "Rtsp.h"
+#include "Network/Socket.h"
 #include "Common/Parser.h"
 #include "Common/config.h"
-#include "Network/Socket.h"
+#include "Extension/Track.h"
 #include "Extension/Factory.h"
 
 using namespace std;
@@ -24,50 +25,84 @@ namespace mediakit {
 
 int RtpPayload::getClockRate(int pt) {
     switch (pt) {
-#define SWITCH_CASE(name, type, value, clock_rate, channel, codec_id)                                                                                          \
+#define XX(name, type, value, clock_rate, channel, codec_id)                                                                                          \
     case value: return clock_rate;
-        RTP_PT_MAP(SWITCH_CASE)
-#undef SWITCH_CASE
+        RTP_PT_MAP(XX)
+#undef XX
         default: return 90000;
     }
 }
 
+int RtpPayload::getClockRateByCodec(CodecId codec) {
+#define XX(name, type, value, clock_rate, channel, codec_id) { codec_id, clock_rate },
+    static map<CodecId, int> s_map = { RTP_PT_MAP(XX) };
+#undef XX
+    auto it = s_map.find(codec);
+    if (it == s_map.end()) {
+        WarnL << "Unsupported codec: " << getCodecName(codec);
+        return 90000;
+    }
+    return it->second;
+}
+
+int RtpPayload::getPayloadType(const Track &track) {
+#define XX(name, type, value, clock_rate, channel, codec_id) { codec_id, info { clock_rate, channel, value } },
+    struct info {
+        int clock_rate;
+        int channels;
+        int pt;
+    };
+    static map<CodecId, info> s_map = { RTP_PT_MAP(XX) };
+#undef XX
+    auto it = s_map.find(track.getCodecId());
+    if (it == s_map.end()) {
+        return -1;
+    }
+    if (track.getTrackType() == TrackAudio) {
+        if (static_cast<const AudioTrack &>(track).getAudioSampleRate() != it->second.clock_rate
+            || static_cast<const AudioTrack &>(track).getAudioChannel() != it->second.channels) {
+            return -1;
+        }
+    }
+    return it->second.pt;
+}
+
 TrackType RtpPayload::getTrackType(int pt) {
     switch (pt) {
-#define SWITCH_CASE(name, type, value, clock_rate, channel, codec_id)                                                                                          \
+#define XX(name, type, value, clock_rate, channel, codec_id)                                                                                          \
     case value: return type;
-        RTP_PT_MAP(SWITCH_CASE)
-#undef SWITCH_CASE
+        RTP_PT_MAP(XX)
+#undef XX
         default: return TrackInvalid;
     }
 }
 
 int RtpPayload::getAudioChannel(int pt) {
     switch (pt) {
-#define SWITCH_CASE(name, type, value, clock_rate, channel, codec_id)                                                                                          \
+#define XX(name, type, value, clock_rate, channel, codec_id)                                                                                          \
     case value: return channel;
-        RTP_PT_MAP(SWITCH_CASE)
-#undef SWITCH_CASE
+        RTP_PT_MAP(XX)
+#undef XX
         default: return 1;
     }
 }
 
 const char *RtpPayload::getName(int pt) {
     switch (pt) {
-#define SWITCH_CASE(name, type, value, clock_rate, channel, codec_id)                                                                                          \
+#define XX(name, type, value, clock_rate, channel, codec_id)                                                                                          \
     case value: return #name;
-        RTP_PT_MAP(SWITCH_CASE)
-#undef SWITCH_CASE
+        RTP_PT_MAP(XX)
+#undef XX
         default: return "unknown payload type";
     }
 }
 
 CodecId RtpPayload::getCodecId(int pt) {
     switch (pt) {
-#define SWITCH_CASE(name, type, value, clock_rate, channel, codec_id)                                                                                          \
+#define XX(name, type, value, clock_rate, channel, codec_id)                                                                                          \
     case value: return codec_id;
-        RTP_PT_MAP(SWITCH_CASE)
-#undef SWITCH_CASE
+        RTP_PT_MAP(XX)
+#undef XX
         default: return CodecInvalid;
     }
 }
@@ -91,13 +126,7 @@ static void getAttrSdp(const multimap<string, string> &attr, _StrPrinter &printe
 }
 
 string SdpTrack::getName() const {
-    switch (_pt) {
-#define SWITCH_CASE(name, type, value, clock_rate, channel, codec_id)                                                                                          \
-    case value: return #name;
-        RTP_PT_MAP(SWITCH_CASE)
-#undef SWITCH_CASE
-        default: return _codec;
-    }
+    return RtpPayload::getName(_pt);
 }
 
 string SdpTrack::getControlUrl(const string &base_url) const {
@@ -715,6 +744,23 @@ TitleSdp::TitleSdp(float dur_sec, const std::map<std::string, std::string> &head
     _printer << "a=control:*\r\n";
 }
 
+DefaultSdp::DefaultSdp(int payload_type, const Track &track)
+    : Sdp(track.getTrackType() == TrackVideo ? 9000 : static_cast<const AudioTrack &>(track).getAudioSampleRate(), payload_type) {
+    _printer << "m=" << track.getTrackTypeStr() << " 0 RTP/AVP " << payload_type << "\r\n";
+    auto bitrate = track.getBitRate() >> 10;
+    if (bitrate) {
+        _printer << "b=AS:" << bitrate << "\r\n";
+    }
+    if (payload_type < 96) {
+        return;
+    }
+    _printer << "a=rtpmap:" << payload_type << " " << track.getCodecName() << "/" << getSampleRate();
+    if (track.getTrackType() == TrackAudio) {
+        _printer << "/" << static_cast<const AudioTrack &>(track).getAudioChannel();
+    }
+    _printer << "\r\n";
+}
+
 } // namespace mediakit
 
 namespace toolkit {

src/Rtsp/Rtsp.h

@@ -11,16 +11,18 @@
 #ifndef RTSP_RTSP_H_
 #define RTSP_RTSP_H_
 
-#include "Common/macros.h"
-#include "Extension/Frame.h"
-#include "Network/Socket.h"
-#include <memory>
 #include <string.h>
 #include <string>
+#include <memory>
 #include <unordered_map>
+#include "Network/Socket.h"
+#include "Common/macros.h"
+#include "Extension/Frame.h"
 
 namespace mediakit {
 
+class Track;
+
 namespace Rtsp {
 typedef enum {
     RTP_Invalid = -1,
@@ -32,27 +34,27 @@ typedef enum {
 #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(G723, TrackAudio, 4, 8000, 1, CodecG723)                                                                                                             \
     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(G722, TrackAudio, 9, 16000, 1, CodecG722)                                                                                                             \
     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(MP3, TrackAudio, 14, 44100, 2, CodecMP3)                                                                                                            \
+    XX(G728, TrackAudio, 15, 8000, 1, CodecG728)                                                                                                            \
     XX(DVI4_11025, TrackAudio, 16, 11025, 1, CodecInvalid)                                                                                                     \
     XX(DVI4_22050, TrackAudio, 17, 22050, 1, CodecInvalid)                                                                                                     \
-    XX(G729, TrackAudio, 18, 8000, 1, CodecInvalid)                                                                                                            \
+    XX(G729, TrackAudio, 18, 8000, 1, CodecG729)                                                                                                            \
     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(MP2T, TrackVideo, 33, 90000, 1, CodecTS)                                                                                                           \
     XX(H263, TrackVideo, 34, 90000, 1, CodecInvalid)
 
 typedef enum {
@@ -213,10 +215,12 @@ private:
 class RtpPayload {
 public:
     static int getClockRate(int pt);
+    static int getClockRateByCodec(CodecId codec);
     static TrackType getTrackType(int pt);
     static int getAudioChannel(int pt);
     static const char *getName(int pt);
     static CodecId getCodecId(int pt);
+    static int getPayloadType(const Track &track);
 
 private:
     RtpPayload() = delete;
@@ -243,8 +247,8 @@ public:
 
 public:
     int _pt = 0xff;
-    int _channel;
-    int _samplerate;
+    int _channel = 0;
+    int _samplerate = 0;
     TrackType _type;
     std::string _codec;
     std::string _fmtp;
@@ -340,6 +344,15 @@ private:
     uint32_t _sample_rate;
 };
 
+class DefaultSdp : public Sdp {
+public:
+    DefaultSdp(int payload_type, const Track &track);
+    std::string getSdp() const override { return _printer; }
+
+private:
+    toolkit::_StrPrinter _printer;
+};
+
 /**
  * sdp中除音视频外的其他描述部分
  * Other description part in sdp except audio and video

src/Rtsp/RtspMuxer.cpp

@@ -65,14 +65,19 @@ bool RtspMuxer::addTrack(const Track::Ptr &track) {
         WarnL << "Already add a track kind of: " << track->getTrackTypeStr() << ", ignore track: " << track->getCodecName();
         return false;
     }
+    if (!track->ready()) {
+        WarnL << track->getCodecName() << " unready!";
+        return false;
+    }
 
     auto &ref = _tracks[track->getIndex()];
     auto &encoder = ref.encoder;
     CHECK(!encoder);
 
+    auto pt = RtpPayload::getPayloadType(*track);
     // payload type 96以后则为动态pt  [AUTO-TRANSLATED:812ac0a2]
     // Payload type 96 and above is dynamic PT
-    Sdp::Ptr sdp = track->getSdp(96 + _index);
+    Sdp::Ptr sdp = track->getSdp(pt == -1 ? 96 + _index : pt);
     if (!sdp) {
         WarnL << "Unsupported codec: " << track->getCodecName();
         return false;