[feat] separate rtp send/receive module from ice transport module

src/channel/audio_channel_receive.cpp

@@ -0,0 +1 @@
+#include "audio_channel_receive.h"

src/channel/audio_channel_receive.h

@@ -0,0 +1,18 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-01-03
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _AUDIO_CHANNEL_RECEIVE_H_
+#define _AUDIO_CHANNEL_RECEIVE_H_
+
+class AudioChannelReceive {
+ public:
+  AudioChannelReceive();
+  ~AudioChannelReceive();
+
+ public:
+};
+
+#endif

src/channel/audio_channel_send.cpp

@@ -0,0 +1 @@
+#include "audio_channel_send.h"

src/channel/audio_channel_send.h

@@ -0,0 +1,18 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-01-03
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _AUDIO_CHANNEL_SEND_H_
+#define _AUDIO_CHANNEL_SEND_H_
+
+class AudioChannelSend {
+ public:
+  AudioChannelSend();
+  ~AudioChannelSend();
+
+ public:
+};
+
+#endif

src/channel/data_channel_receive.cpp

@@ -0,0 +1 @@
+#include "data_channel_receive.h"

src/channel/data_channel_receive.h

@@ -0,0 +1,18 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-01-03
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _DATA_CHANNEL_RECEIVE_H_
+#define _DATA_CHANNEL_RECEIVE_H_
+
+class DataChannelReceive {
+ public:
+  DataChannelReceive();
+  ~DataChannelReceive();
+
+ public:
+};
+
+#endif

src/channel/data_channel_send.cpp

@@ -0,0 +1 @@
+#include "data_channel_send.h"

src/channel/data_channel_send.h

@@ -0,0 +1,18 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-01-03
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _DATA_CHANNEL_SEND_H_
+#define _DATA_CHANNEL_SEND_H_
+
+class DataChannelSend {
+ public:
+  DataChannelSend();
+  ~DataChannelSend();
+
+ public:
+};
+
+#endif

src/channel/video_channel_receive.cpp

@@ -0,0 +1 @@
+#include "video_channel_receive.h"

src/channel/video_channel_receive.h

@@ -0,0 +1,18 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-01-03
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _VIDEO_CHANNEL_RECEIVE_H_
+#define _VIDEO_CHANNEL_RECEIVE_H_
+
+class VideoChannelReceive {
+ public:
+  VideoChannelReceive();
+  ~VideoChannelReceive();
+
+ public:
+};
+
+#endif

src/channel/video_channel_send.cpp

@@ -0,0 +1,50 @@
+#include "video_channel_send.h"
+
+VideoChannelSend::VideoChannelSend() {}
+
+VideoChannelSend::~VideoChannelSend() {}
+
+void VideoChannelSend::Initialize(RtpPacket::PAYLOAD_TYPE negotiated_video_pt) {
+  video_rtp_codec_ = std::make_unique<RtpCodec>(negotiated_video_pt);
+
+  rtp_video_sender_ = std::make_unique<RtpVideoSender>(ice_io_statistics_);
+  rtp_video_sender_->SetSendDataFunc(
+      [this](const char *data, size_t size) -> int {
+        if (!ice_agent_) {
+          LOG_ERROR("ice_agent_ is nullptr");
+          return -1;
+        }
+
+        if (state_ != NICE_COMPONENT_STATE_CONNECTED &&
+            state_ != NICE_COMPONENT_STATE_READY) {
+          LOG_ERROR("Ice is not connected, state = [{}]",
+                    nice_component_state_to_string(state_));
+          return -2;
+        }
+
+        ice_io_statistics_->UpdateVideoOutboundBytes((uint32_t)size);
+        return ice_agent_->Send(data, size);
+      });
+
+  rtp_video_sender_->Start();
+}
+
+void VideoChannelSend::Destroy() {
+  if (rtp_video_sender_) {
+    rtp_video_sender_->Stop();
+  }
+}
+
+int VideoChannelSend::SendVideo(char *encoded_frame, size_t size) {
+  std::vector<RtpPacket> packets;
+  if (rtp_video_sender_) {
+    if (video_rtp_codec_) {
+      video_rtp_codec_->Encode(
+          static_cast<RtpCodec::VideoFrameType>(frame_type),
+          (uint8_t *)encoded_frame, (uint32_t)size, packets);
+    }
+    rtp_video_sender_->Enqueue(packets);
+  }
+
+  return 0;
+}

src/channel/video_channel_send.h

@@ -0,0 +1,29 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2025-01-03
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _VIDEO_CHANNEL_SEND_H_
+#define _VIDEO_CHANNEL_SEND_H_
+
+#include "rtp_codec.h"
+#include "rtp_video_sender.h"
+
+class VideoChannelSend {
+ public:
+  VideoChannelSend();
+  ~VideoChannelSend();
+
+ public:
+  void Initialize(RtpPacket::PAYLOAD_TYPE negotiated_video_pt);
+  void Destroy();
+
+  int SendVideo(char *encoded_frame, size_t size);
+
+ private:
+  std::unique_ptr<RtpCodec> video_rtp_codec_ = nullptr;
+  std::unique_ptr<RtpVideoSender> rtp_video_sender_ = nullptr;
+};
+
+#endif

src/pc/peer_connection.cpp

@@ -140,24 +140,24 @@ int PeerConnection::Init(PeerConnectionParams params,
                             user_id.size(), user_data_);
     } else if ("connected" == ice_status) {
       // std::string transmission_id = std::string(user_id, user_id_size);
-      // is_ice_transmission_ready_[user_id] = true;
+      // is_ice_transport_ready_[user_id] = true;
       // on_connection_status_(ConnectionStatus::Connected, user_id.data(),
       //                       user_id.size(), user_data_);
       // b_force_i_frame_ = true;
       LOG_INFO("Ice connected");
     } else if ("ready" == ice_status) {
-      is_ice_transmission_ready_[user_id] = true;
+      is_ice_transport_ready_[user_id] = true;
       b_force_i_frame_ = true;
       LOG_INFO("Ice ready");
       on_connection_status_(ConnectionStatus::Connected, user_id.data(),
                             user_id.size(), user_data_);
     } else if ("closed" == ice_status) {
-      is_ice_transmission_ready_[user_id] = false;
+      is_ice_transport_ready_[user_id] = false;
       LOG_INFO("Ice closed");
       on_connection_status_(ConnectionStatus::Closed, user_id.data(),
                             user_id.size(), user_data_);
     } else if ("failed" == ice_status) {
-      is_ice_transmission_ready_[user_id] = false;
+      is_ice_transport_ready_[user_id] = false;
       if (offer_peer_ && try_rejoin_with_turn_) {
         enable_turn_ = true;
         reliable_ice_ = false;
@@ -179,7 +179,7 @@ int PeerConnection::Init(PeerConnectionParams params,
                               user_id.size(), user_data_);
       }
     } else {
-      is_ice_transmission_ready_[user_id] = false;
+      is_ice_transport_ready_[user_id] = false;
       LOG_INFO("Unknown ice state [{}]", ice_status);
     }
   };
@@ -298,7 +298,7 @@ int PeerConnection::Leave(const std::string &transmission_id) {
              transmission_id);
   }
 
-  is_ice_transmission_ready_[user_id_] = false;
+  is_ice_transport_ready_[user_id_] = false;
   leave_ = true;
 
   ReleaseAllIceTransmission();
@@ -306,11 +306,11 @@ int PeerConnection::Leave(const std::string &transmission_id) {
 }
 
 int PeerConnection::ReleaseAllIceTransmission() {
-  for (auto &user_id_it : ice_transmission_list_) {
+  for (auto &user_id_it : ice_transport_list_) {
     user_id_it.second->DestroyIceTransmission();
   }
-  ice_transmission_list_.clear();
+  ice_transport_list_.clear();
-  is_ice_transmission_ready_.clear();
+  is_ice_transport_ready_.clear();
   return 0;
 }
 
@@ -349,12 +349,12 @@ SignalStatus PeerConnection::GetSignalStatus() {
 }
 
 int PeerConnection::SendVideoFrame(const XVideoFrame *video_frame) {
-  if (ice_transmission_list_.empty()) {
+  if (ice_transport_list_.empty()) {
     return -1;
   }
 
-  for (auto &ice_trans : ice_transmission_list_) {
+  for (auto &ice_trans : ice_transport_list_) {
-    if (!is_ice_transmission_ready_[ice_trans.first]) {
+    if (!is_ice_transport_ready_[ice_trans.first]) {
       continue;
     }
 
@@ -365,12 +365,12 @@ int PeerConnection::SendVideoFrame(const XVideoFrame *video_frame) {
 }
 
 int PeerConnection::SendAudioFrame(const char *data, size_t size) {
-  if (ice_transmission_list_.empty()) {
+  if (ice_transport_list_.empty()) {
     return -1;
   }
 
-  for (auto &ice_trans : ice_transmission_list_) {
+  for (auto &ice_trans : ice_transport_list_) {
-    if (!is_ice_transmission_ready_[ice_trans.first]) {
+    if (!is_ice_transport_ready_[ice_trans.first]) {
       continue;
     }
     ice_trans.second->SendAudioFrame(data, size);
@@ -380,8 +380,8 @@ int PeerConnection::SendAudioFrame(const char *data, size_t size) {
 }
 
 int PeerConnection::SendDataFrame(const char *data, size_t size) {
-  for (auto &ice_trans : ice_transmission_list_) {
+  for (auto &ice_trans : ice_transport_list_) {
-    if (!is_ice_transmission_ready_[ice_trans.first]) {
+    if (!is_ice_transport_ready_[ice_trans.first]) {
       continue;
     }
     ice_trans.second->SendDataFrame(data, size);
@@ -594,31 +594,30 @@ void PeerConnection::ProcessIceWorkMsg(const IceWorkMsg &msg) {
       LOG_INFO("]");
 
       for (auto &remote_user_id : user_id_list) {
-        ice_transmission_list_[remote_user_id] =
+        ice_transport_list_[remote_user_id] = std::make_unique<IceTransport>(
-            std::make_unique<IceTransmission>(
+            true, transmission_id, user_id_, remote_user_id, ws_transport_,
-                true, transmission_id, user_id_, remote_user_id, ws_transport_,
+            on_ice_status_change_, user_data_);
-                on_ice_status_change_, user_data_);
 
-        ice_transmission_list_[remote_user_id]->SetLocalCapabilities(
+        ice_transport_list_[remote_user_id]->SetLocalCapabilities(
             hardware_acceleration_, trickle_ice_, reliable_ice_, enable_turn_,
             false, video_payload_types_, audio_payload_types_);
 
-        ice_transmission_list_[remote_user_id]->SetOnReceiveVideoFunc(
+        ice_transport_list_[remote_user_id]->SetOnReceiveVideoFunc(
             on_receive_video_frame_);
-        ice_transmission_list_[remote_user_id]->SetOnReceiveAudioFunc(
+        ice_transport_list_[remote_user_id]->SetOnReceiveAudioFunc(
             on_receive_audio_buffer_);
-        ice_transmission_list_[remote_user_id]->SetOnReceiveDataFunc(
+        ice_transport_list_[remote_user_id]->SetOnReceiveDataFunc(
             on_receive_data_buffer_);
 
-        ice_transmission_list_[remote_user_id]->SetOnReceiveNetStatusReportFunc(
+        ice_transport_list_[remote_user_id]->SetOnReceiveNetStatusReportFunc(
             net_status_report_);
 
-        ice_transmission_list_[remote_user_id]->InitIceTransmission(
+        ice_transport_list_[remote_user_id]->InitIceTransmission(
             cfg_stun_server_ip_, stun_server_port_, cfg_turn_server_ip_,
             turn_server_port_, cfg_turn_server_username_,
             cfg_turn_server_password_,
             av1_encoding_ ? RtpPacket::AV1 : RtpPacket::H264);
-        ice_transmission_list_[remote_user_id]->JoinTransmission();
+        ice_transport_list_[remote_user_id]->JoinTransmission();
       }
 
       break;
@@ -627,11 +626,11 @@ void PeerConnection::ProcessIceWorkMsg(const IceWorkMsg &msg) {
       std::string user_id = msg.user_id;
       LOG_INFO("Receive notification: user id [{}] leave transmission",
                user_id);
-      auto user_id_it = ice_transmission_list_.find(user_id);
+      auto user_id_it = ice_transport_list_.find(user_id);
-      if (user_id_it != ice_transmission_list_.end()) {
+      if (user_id_it != ice_transport_list_.end()) {
         user_id_it->second->DestroyIceTransmission();
-        ice_transmission_list_.erase(user_id_it);
+        ice_transport_list_.erase(user_id_it);
-        is_ice_transmission_ready_[user_id] = false;
+        is_ice_transport_ready_[user_id] = false;
         LOG_INFO("Terminate transmission to user [{}]", user_id);
       }
       break;
@@ -639,40 +638,37 @@ void PeerConnection::ProcessIceWorkMsg(const IceWorkMsg &msg) {
     case IceWorkMsg::Type::Offer: {
       std::string transmission_id = msg.transmission_id;
       std::string remote_user_id = msg.remote_user_id;
-      if (ice_transmission_list_.end() ==
+      if (ice_transport_list_.end() ==
-          ice_transmission_list_.find(remote_user_id)) {
+          ice_transport_list_.find(remote_user_id)) {
         // Enable TURN for answer peer by default
-        ice_transmission_list_[remote_user_id] =
+        ice_transport_list_[remote_user_id] = std::make_unique<IceTransport>(
-            std::make_unique<IceTransmission>(
+            false, transmission_id, user_id_, remote_user_id, ws_transport_,
-                false, transmission_id, user_id_, remote_user_id, ws_transport_,
+            on_ice_status_change_, user_data_);
-                on_ice_status_change_, user_data_);
 
-        ice_transmission_list_[remote_user_id]->SetLocalCapabilities(
+        ice_transport_list_[remote_user_id]->SetLocalCapabilities(
             hardware_acceleration_, trickle_ice_, reliable_ice_, enable_turn_,
             false, video_payload_types_, audio_payload_types_);
 
-        ice_transmission_list_[remote_user_id]->SetOnReceiveVideoFunc(
+        ice_transport_list_[remote_user_id]->SetOnReceiveVideoFunc(
             on_receive_video_frame_);
-        ice_transmission_list_[remote_user_id]->SetOnReceiveAudioFunc(
+        ice_transport_list_[remote_user_id]->SetOnReceiveAudioFunc(
             on_receive_audio_buffer_);
-        ice_transmission_list_[remote_user_id]->SetOnReceiveDataFunc(
+        ice_transport_list_[remote_user_id]->SetOnReceiveDataFunc(
             on_receive_data_buffer_);
 
-        ice_transmission_list_[remote_user_id]->SetOnReceiveNetStatusReportFunc(
+        ice_transport_list_[remote_user_id]->SetOnReceiveNetStatusReportFunc(
             net_status_report_);
 
-        ice_transmission_list_[remote_user_id]->InitIceTransmission(
+        ice_transport_list_[remote_user_id]->InitIceTransmission(
             cfg_stun_server_ip_, stun_server_port_, cfg_turn_server_ip_,
             turn_server_port_, cfg_turn_server_username_,
             cfg_turn_server_password_,
             av1_encoding_ ? RtpPacket::AV1 : RtpPacket::H264);
-        ice_transmission_list_[remote_user_id]->SetTransmissionId(
+        ice_transport_list_[remote_user_id]->SetTransmissionId(transmission_id);
-            transmission_id);
       }
 
       std::string remote_sdp = msg.remote_sdp;
-      int ret =
+      int ret = ice_transport_list_[remote_user_id]->SetRemoteSdp(remote_sdp);
-          ice_transmission_list_[remote_user_id]->SetRemoteSdp(remote_sdp);
       if (0 != ret) {
         NegotiationFailed();
         break;
@@ -680,19 +676,18 @@ void PeerConnection::ProcessIceWorkMsg(const IceWorkMsg &msg) {
 
       if (trickle_ice_) {
         sdp_without_cands_ = remote_sdp;
-        ice_transmission_list_[remote_user_id]->SendAnswer();
+        ice_transport_list_[remote_user_id]->SendAnswer();
       }
-      ice_transmission_list_[remote_user_id]->GatherCandidates();
+      ice_transport_list_[remote_user_id]->GatherCandidates();
 
       break;
     }
     case IceWorkMsg::Type::Answer: {
       std::string remote_user_id = msg.remote_user_id;
       std::string remote_sdp = msg.remote_sdp;
-      if (ice_transmission_list_.find(remote_user_id) !=
+      if (ice_transport_list_.find(remote_user_id) !=
-          ice_transmission_list_.end()) {
+          ice_transport_list_.end()) {
-        int ret =
+        int ret = ice_transport_list_[remote_user_id]->SetRemoteSdp(remote_sdp);
-            ice_transmission_list_[remote_user_id]->SetRemoteSdp(remote_sdp);
         if (0 != ret) {
           Leave(remote_transmission_id_);
           break;
@@ -700,7 +695,7 @@ void PeerConnection::ProcessIceWorkMsg(const IceWorkMsg &msg) {
 
         if (trickle_ice_) {
           sdp_without_cands_ = remote_sdp;
-          ice_transmission_list_[remote_user_id]->GatherCandidates();
+          ice_transport_list_[remote_user_id]->GatherCandidates();
         }
       }
 
@@ -714,10 +709,10 @@ void PeerConnection::ProcessIceWorkMsg(const IceWorkMsg &msg) {
       // LOG_INFO("[{}] receive new candidate from [{}]:[{}]", user_id_,
       //          remote_user_id, new_candidate);
 
-      if (ice_transmission_list_.find(remote_user_id) !=
+      if (ice_transport_list_.find(remote_user_id) !=
-          ice_transmission_list_.end()) {
+          ice_transport_list_.end()) {
-        ice_transmission_list_[remote_user_id]->SetRemoteSdp(
+        ice_transport_list_[remote_user_id]->SetRemoteSdp(sdp_without_cands_ +
-            sdp_without_cands_ + new_candidate);
+                                                          new_candidate);
       }
       break;
     }

src/pc/peer_connection.h

@@ -13,7 +13,7 @@
 
 #include "audio_decoder.h"
 #include "audio_encoder.h"
-#include "ice_transmission.h"
+#include "ice_transport.h"
 #include "video_decoder_factory.h"
 #include "video_encoder_factory.h"
 #include "ws_client.h"
@@ -169,9 +169,8 @@ class PeerConnection {
   std::string sdp_without_cands_ = "";
 
  private:
-  std::map<std::string, std::unique_ptr<IceTransmission>>
+  std::map<std::string, std::unique_ptr<IceTransport>> ice_transport_list_;
-      ice_transmission_list_;
+  std::map<std::string, bool> is_ice_transport_ready_;
-  std::map<std::string, bool> is_ice_transmission_ready_;
 
   std::function<void(std::string, const std::string &)> on_ice_status_change_ =
       nullptr;

src/rtp/rtp_packet/rtp_codec.cpp

@@ -31,7 +31,7 @@ uint32_t GenerateUniqueSsrc() {
   return new_ssrc;
 }
 
-RtpCodec ::RtpCodec(RtpPacket::PAYLOAD_TYPE payload_type)
+RtpCodec::RtpCodec(RtpPacket::PAYLOAD_TYPE payload_type)
     : version_(RTP_VERSION),
       has_padding_(false),
       has_extension_(false),
@@ -41,7 +41,7 @@ RtpCodec ::RtpCodec(RtpPacket::PAYLOAD_TYPE payload_type)
   fec_encoder_.Init();
 }
 
-RtpCodec ::~RtpCodec() {
+RtpCodec::~RtpCodec() {
   SSRCManager::Instance().DeleteSsrc(ssrc_);
 
   if (extension_data_) {

src/transport/ice_transport.cpp

@@ -1,4 +1,4 @@
-#include "ice_transmission.h"
+#include "ice_transport.h"
 
 #include <chrono>
 #include <map>
@@ -14,7 +14,7 @@
 
 using nlohmann::json;
 
-IceTransmission::IceTransmission(
+IceTransport::IceTransport(
     bool offer_peer, std::string &transmission_id, std::string &user_id,
     std::string &remote_user_id, std::shared_ptr<WsClient> ice_ws_transmission,
     std::function<void(std::string, const std::string &)> on_ice_status_change,
@@ -27,7 +27,7 @@ IceTransmission::IceTransmission(
       on_ice_status_change_(on_ice_status_change),
       user_data_(user_data) {}
 
-IceTransmission::~IceTransmission() {
+IceTransport::~IceTransport() {
   user_data_ = nullptr;
   video_codec_inited_ = false;
   audio_codec_inited_ = false;
@@ -41,10 +41,12 @@ IceTransmission::~IceTransmission() {
 #endif
 }
 
-int IceTransmission::SetLocalCapabilities(
+int IceTransport::SetLocalCapabilities(bool hardware_acceleration,
-    bool hardware_acceleration, bool use_trickle_ice, bool use_reliable_ice,
+                                       bool use_trickle_ice,
-    bool enable_turn, bool force_turn, std::vector<int> &video_payload_types,
+                                       bool use_reliable_ice, bool enable_turn,
-    std::vector<int> &audio_payload_types) {
+                                       bool force_turn,
+                                       std::vector<int> &video_payload_types,
+                                       std::vector<int> &audio_payload_types) {
   hardware_acceleration_ = hardware_acceleration;
   use_trickle_ice_ = use_trickle_ice;
   use_reliable_ice_ = use_reliable_ice;
@@ -56,7 +58,7 @@ int IceTransmission::SetLocalCapabilities(
   return 0;
 }
 
-int IceTransmission::InitIceTransmission(
+int IceTransport::InitIceTransmission(
     std::string &stun_ip, int stun_port, std::string &turn_ip, int turn_port,
     std::string &turn_username, std::string &turn_password,
     RtpPacket::PAYLOAD_TYPE video_codec_payload_type) {
@@ -246,56 +248,50 @@ int IceTransmission::InitIceTransmission(
       []([[maybe_unused]] NiceAgent *agent, [[maybe_unused]] guint stream_id,
          [[maybe_unused]] guint component_id, NiceComponentState state,
          gpointer user_ptr) {
-        if (user_ptr) {
+        if (auto ice_transport = static_cast<IceTransport *>(user_ptr)) {
-          IceTransmission *ice_transmission_obj =
+          if (!ice_transport->is_closed_) {
-              static_cast<IceTransmission *>(user_ptr);
+            LOG_INFO("[{}->{}] state_change: {}", ice_transport->user_id_,
-          if (!ice_transmission_obj->is_closed_) {
+                     ice_transport->remote_user_id_,
-            LOG_INFO("[{}->{}] state_change: {}",
-                     ice_transmission_obj->user_id_,
-                     ice_transmission_obj->remote_user_id_,
                      nice_component_state_to_string(state));
-            ice_transmission_obj->state_ = state;
+            ice_transport->state_ = state;
 
             if (state == NICE_COMPONENT_STATE_READY ||
                 state == NICE_COMPONENT_STATE_CONNECTED) {
-              ice_transmission_obj->ice_io_statistics_->Start();
+              ice_transport->ice_io_statistics_->Start();
             }
 
-            ice_transmission_obj->on_ice_status_change_(
+            ice_transport->on_ice_status_change_(
                 nice_component_state_to_string(state),
-                ice_transmission_obj->remote_user_id_);
+                ice_transport->remote_user_id_);
           }
         }
       },
       [](NiceAgent *agent, guint stream_id, guint component_id,
          gchar *foundation, gpointer user_ptr) {
-        if (user_ptr) {
+        if (auto ice_transport = static_cast<IceTransport *>(user_ptr)) {
-          IceTransmission *ice_transmission_obj =
+          if (ice_transport->use_trickle_ice_) {
-              static_cast<IceTransmission *>(user_ptr);
-
-          if (ice_transmission_obj->use_trickle_ice_) {
             GSList *cands =
                 nice_agent_get_local_candidates(agent, stream_id, component_id);
             NiceCandidate *cand;
             for (GSList *i = cands; i; i = i->next) {
               cand = (NiceCandidate *)i->data;
               if (g_strcmp0(cand->foundation, foundation) == 0) {
-                ice_transmission_obj->new_local_candidate_ =
+                ice_transport->new_local_candidate_ =
                     nice_agent_generate_local_candidate_sdp(agent, cand);
 
                 json message = {
                     {"type", "new_candidate"},
-                    {"transmission_id", ice_transmission_obj->transmission_id_},
+                    {"transmission_id", ice_transport->transmission_id_},
-                    {"user_id", ice_transmission_obj->user_id_},
+                    {"user_id", ice_transport->user_id_},
-                    {"remote_user_id", ice_transmission_obj->remote_user_id_},
+                    {"remote_user_id", ice_transport->remote_user_id_},
-                    {"sdp", ice_transmission_obj->new_local_candidate_}};
+                    {"sdp", ice_transport->new_local_candidate_}};
                 // LOG_INFO("[{}] Send new candidate to [{}]]:[{}]",
-                //          ice_transmission_obj->user_id_,
+                //          ice_transport->user_id_,
-                //          ice_transmission_obj->remote_user_id_,
+                //          ice_transport->remote_user_id_,
-                //          ice_transmission_obj->new_local_candidate_);
+                //          ice_transport->new_local_candidate_);
 
-                if (ice_transmission_obj->ice_ws_transport_) {
+                if (ice_transport->ice_ws_transport_) {
-                  ice_transmission_obj->ice_ws_transport_->Send(message.dump());
+                  ice_transport->ice_ws_transport_->Send(message.dump());
                 }
               }
             }
@@ -307,17 +303,15 @@ int IceTransmission::InitIceTransmission(
       []([[maybe_unused]] NiceAgent *agent, [[maybe_unused]] guint stream_id,
          gpointer user_ptr) {
         // non-trickle
-        if (user_ptr) {
+        if (auto ice_transport = static_cast<IceTransport *>(user_ptr)) {
-          IceTransmission *ice_transmission_obj =
+          LOG_INFO("[{}->{}] gather_done", ice_transport->user_id_,
-              static_cast<IceTransmission *>(user_ptr);
+                   ice_transport->remote_user_id_);
-          LOG_INFO("[{}->{}] gather_done", ice_transmission_obj->user_id_,
-                   ice_transmission_obj->remote_user_id_);
 
-          if (!ice_transmission_obj->use_trickle_ice_) {
+          if (!ice_transport->use_trickle_ice_) {
-            if (ice_transmission_obj->offer_peer_) {
+            if (ice_transport->offer_peer_) {
-              ice_transmission_obj->SendOffer();
+              ice_transport->SendOffer();
             } else {
-              ice_transmission_obj->SendAnswer();
+              ice_transport->SendAnswer();
             }
           }
         }
@@ -329,49 +323,43 @@ int IceTransmission::InitIceTransmission(
         NiceCandidate *remote = nullptr;
         nice_agent_get_selected_pair(agent, stream_id, component_id, &local,
                                      &remote);
-        if (user_ptr) {
+        if (auto ice_transport = static_cast<IceTransport *>(user_ptr)) {
-          IceTransmission *ice_transmission_obj =
-              static_cast<IceTransmission *>(user_ptr);
           if (local->type == NICE_CANDIDATE_TYPE_RELAYED &&
               remote->type == NICE_CANDIDATE_TYPE_RELAYED) {
             LOG_INFO("Traversal using relay server");
-            ice_transmission_obj->traversal_type_ = TraversalType::TRelay;
+            ice_transport->traversal_type_ = TraversalType::TRelay;
           } else {
             LOG_INFO("Traversal using p2p");
-            ice_transmission_obj->traversal_type_ = TraversalType::TP2P;
+            ice_transport->traversal_type_ = TraversalType::TP2P;
           }
           XNetTrafficStats net_traffic_stats;
           memset(&net_traffic_stats, 0, sizeof(net_traffic_stats));
 
-          ice_transmission_obj->on_receive_net_status_report_(
+          ice_transport->on_receive_net_status_report_(
-              ice_transmission_obj->user_id_.data(),
+              ice_transport->user_id_.data(), ice_transport->user_id_.size(),
-              ice_transmission_obj->user_id_.size(),
+              TraversalMode(ice_transport->traversal_type_), &net_traffic_stats,
-              TraversalMode(ice_transmission_obj->traversal_type_),
+              ice_transport->remote_user_id_.data(),
-              &net_traffic_stats, ice_transmission_obj->remote_user_id_.data(),
+              ice_transport->remote_user_id_.size(), ice_transport->user_data_);
-              ice_transmission_obj->remote_user_id_.size(),
-              ice_transmission_obj->user_data_);
         }
       },
       []([[maybe_unused]] NiceAgent *agent, [[maybe_unused]] guint stream_id,
          [[maybe_unused]] guint component_id, guint size, gchar *buffer,
          gpointer user_ptr) {
-        if (user_ptr) {
+        if (auto ice_transport = static_cast<IceTransport *>(user_ptr)) {
-          IceTransmission *ice_transmission_obj =
+          if (ice_transport && !ice_transport->is_closed_) {
-              static_cast<IceTransmission *>(user_ptr);
+            if (ice_transport->CheckIsRtpPacket(buffer, size)) {
-          if (ice_transmission_obj && !ice_transmission_obj->is_closed_) {
+              if (ice_transport->CheckIsVideoPacket(buffer, size)) {
-            if (ice_transmission_obj->CheckIsVideoPacket(buffer, size)) {
+                RtpPacket packet((uint8_t *)buffer, size);
-              RtpPacket packet((uint8_t *)buffer, size);
+                ice_transport->rtp_video_receiver_->InsertRtpPacket(packet);
-              ice_transmission_obj->rtp_video_receiver_->InsertRtpPacket(
+              } else if (ice_transport->CheckIsAudioPacket(buffer, size)) {
-                  packet);
+                RtpPacket packet((uint8_t *)buffer, size);
-            } else if (ice_transmission_obj->CheckIsAudioPacket(buffer, size)) {
+                ice_transport->rtp_audio_receiver_->InsertRtpPacket(packet);
-              RtpPacket packet((uint8_t *)buffer, size);
+              } else if (ice_transport->CheckIsDataPacket(buffer, size)) {
-              ice_transmission_obj->rtp_audio_receiver_->InsertRtpPacket(
+                RtpPacket packet((uint8_t *)buffer, size);
-                  packet);
+                ice_transport->rtp_data_receiver_->InsertRtpPacket(packet);
-            } else if (ice_transmission_obj->CheckIsDataPacket(buffer, size)) {
+              }
-              RtpPacket packet((uint8_t *)buffer, size);
+            } else if (ice_transport->CheckIsRtcpPacket(buffer, size)) {
-              ice_transmission_obj->rtp_data_receiver_->InsertRtpPacket(packet);
+              LOG_ERROR("Rtcp packet [{}]", (uint8_t)(buffer[1]));
-            } else if (ice_transmission_obj->CheckIsRtcpPacket(buffer, size)) {
-              // LOG_ERROR("Rtcp packet [{}]", (uint8_t)(buffer[1]));
             } else {
               LOG_ERROR("Unknown packet");
             }
@@ -382,7 +370,7 @@ int IceTransmission::InitIceTransmission(
   return 0;
 }
 
-int IceTransmission::DestroyIceTransmission() {
+int IceTransport::DestroyIceTransmission() {
   LOG_INFO("[{}->{}] Destroy ice transmission", user_id_, remote_user_id_);
   is_closed_ = true;
 
@@ -413,15 +401,15 @@ int IceTransmission::DestroyIceTransmission() {
   return ice_agent_->DestroyIceAgent();
 }
 
-int IceTransmission::CreateMediaCodec() {
+int IceTransport::CreateMediaCodec() {
   video_rtp_codec_ = std::make_unique<RtpCodec>(negotiated_video_pt_);
   audio_rtp_codec_ = std::make_unique<RtpCodec>(negotiated_audio_pt_);
   data_rtp_codec_ = std::make_unique<RtpCodec>(negotiated_data_pt_);
   return 0;
 }
 
-int IceTransmission::CreateVideoCodec(RtpPacket::PAYLOAD_TYPE video_pt,
+int IceTransport::CreateVideoCodec(RtpPacket::PAYLOAD_TYPE video_pt,
-                                      bool hardware_acceleration) {
+                                   bool hardware_acceleration) {
   if (video_codec_inited_) {
     return 0;
   }
@@ -493,7 +481,7 @@ int IceTransmission::CreateVideoCodec(RtpPacket::PAYLOAD_TYPE video_pt,
   return 0;
 }
 
-int IceTransmission::CreateAudioCodec() {
+int IceTransport::CreateAudioCodec() {
   if (audio_codec_inited_) {
     return 0;
   }
@@ -517,13 +505,13 @@ int IceTransmission::CreateAudioCodec() {
   return 0;
 }
 
-int IceTransmission::SetTransmissionId(const std::string &transmission_id) {
+int IceTransport::SetTransmissionId(const std::string &transmission_id) {
   transmission_id_ = transmission_id;
 
   return 0;
 }
 
-int IceTransmission::JoinTransmission() {
+int IceTransport::JoinTransmission() {
   LOG_INFO("[{}] Join transmission", user_id_);
 
   if (use_trickle_ice_) {
@@ -534,7 +522,7 @@ int IceTransmission::JoinTransmission() {
   return 0;
 }
 
-int IceTransmission::GatherCandidates() {
+int IceTransport::GatherCandidates() {
   int ret = ice_agent_->GatherCandidates();
   if (ret < 0) {
     LOG_ERROR("Gather candidates failed");
@@ -542,7 +530,7 @@ int IceTransmission::GatherCandidates() {
   return 0;
 }
 
-int IceTransmission::SetRemoteSdp(const std::string &remote_sdp) {
+int IceTransport::SetRemoteSdp(const std::string &remote_sdp) {
   std::string media_stream_sdp = GetRemoteCapabilities(remote_sdp);
   if (media_stream_sdp.empty()) {
     LOG_ERROR("Set remote sdp failed due to negotiation failed");
@@ -556,7 +544,7 @@ int IceTransmission::SetRemoteSdp(const std::string &remote_sdp) {
   return 0;
 }
 
-int IceTransmission::SendOffer() {
+int IceTransport::SendOffer() {
   local_sdp_ = ice_agent_->GenerateLocalSdp();
   AppendLocalCapabilitiesToOffer(local_sdp_);
   json message = {{"type", "offer"},
@@ -572,7 +560,7 @@ int IceTransmission::SendOffer() {
   return 0;
 }
 
-int IceTransmission::SendAnswer() {
+int IceTransport::SendAnswer() {
   local_sdp_ = ice_agent_->GenerateLocalSdp();
   AppendLocalCapabilitiesToAnswer(local_sdp_);
   json message = {{"type", "answer"},
@@ -589,7 +577,7 @@ int IceTransmission::SendAnswer() {
   return 0;
 }
 
-int IceTransmission::AppendLocalCapabilitiesToOffer(
+int IceTransport::AppendLocalCapabilitiesToOffer(
     const std::string &remote_sdp) {
   std::string preferred_video_pt;
   std::string to_replace = "ICE/SDP";
@@ -647,7 +635,7 @@ int IceTransmission::AppendLocalCapabilitiesToOffer(
   return 0;
 }
 
-int IceTransmission::AppendLocalCapabilitiesToAnswer(
+int IceTransport::AppendLocalCapabilitiesToAnswer(
     const std::string &remote_sdp) {
   std::string negotiated_video_pt;
   std::string negotiated_audio_pt;
@@ -692,8 +680,7 @@ int IceTransmission::AppendLocalCapabilitiesToAnswer(
   return 0;
 }
 
-std::string IceTransmission::GetRemoteCapabilities(
+std::string IceTransport::GetRemoteCapabilities(const std::string &remote_sdp) {
-    const std::string &remote_sdp) {
   std::string media_stream_sdp;
   std::size_t video_start = remote_sdp.find("m=video");
   std::size_t video_end = remote_sdp.find("m=audio");
@@ -745,7 +732,7 @@ std::string IceTransmission::GetRemoteCapabilities(
   return media_stream_sdp;
 }
 
-bool IceTransmission::NegotiateVideoPayloadType(const std::string &remote_sdp) {
+bool IceTransport::NegotiateVideoPayloadType(const std::string &remote_sdp) {
   std::string remote_video_capabilities;
   std::string local_video_capabilities;
   std::string remote_prefered_video_pt;
@@ -817,7 +804,7 @@ bool IceTransmission::NegotiateVideoPayloadType(const std::string &remote_sdp) {
   }
 }
 
-bool IceTransmission::NegotiateAudioPayloadType(const std::string &remote_sdp) {
+bool IceTransport::NegotiateAudioPayloadType(const std::string &remote_sdp) {
   std::string remote_audio_capabilities;
   std::string remote_prefered_audio_pt;
 
@@ -877,7 +864,7 @@ bool IceTransmission::NegotiateAudioPayloadType(const std::string &remote_sdp) {
   }
 }
 
-bool IceTransmission::NegotiateDataPayloadType(const std::string &remote_sdp) {
+bool IceTransport::NegotiateDataPayloadType(const std::string &remote_sdp) {
   std::string remote_data_capabilities;
   std::string remote_prefered_data_pt;
 
@@ -937,12 +924,11 @@ bool IceTransmission::NegotiateDataPayloadType(const std::string &remote_sdp) {
   }
 }
 
-std::vector<RtpPacket::PAYLOAD_TYPE>
+std::vector<RtpPacket::PAYLOAD_TYPE> IceTransport::GetNegotiatedCapabilities() {
-IceTransmission::GetNegotiatedCapabilities() {
   return {negotiated_video_pt_, negotiated_audio_pt_, negotiated_data_pt_};
 }
 
-int IceTransmission::SendVideoFrame(const XVideoFrame *video_frame) {
+int IceTransport::SendVideoFrame(const XVideoFrame *video_frame) {
   if (state_ != NICE_COMPONENT_STATE_CONNECTED &&
       state_ != NICE_COMPONENT_STATE_READY) {
     LOG_ERROR("Ice is not connected, state = [{}]",
@@ -960,14 +946,8 @@ int IceTransmission::SendVideoFrame(const XVideoFrame *video_frame) {
       video_frame,
       [this](char *encoded_frame, size_t size,
              VideoEncoder::VideoFrameType frame_type) -> int {
-        std::vector<RtpPacket> packets;
+        if (video_channel_send_) {
-        if (rtp_video_sender_) {
+          video_channel_send_->SendVideo(encoded_frame, size);
-          if (video_rtp_codec_) {
-            video_rtp_codec_->Encode(
-                static_cast<RtpCodec::VideoFrameType>(frame_type),
-                (uint8_t *)encoded_frame, (uint32_t)size, packets);
-          }
-          rtp_video_sender_->Enqueue(packets);
         }
 
         return 0;
@@ -981,7 +961,7 @@ int IceTransmission::SendVideoFrame(const XVideoFrame *video_frame) {
   return 0;
 }
 
-int IceTransmission::SendAudioFrame(const char *data, size_t size) {
+int IceTransport::SendAudioFrame(const char *data, size_t size) {
   if (state_ != NICE_COMPONENT_STATE_CONNECTED &&
       state_ != NICE_COMPONENT_STATE_READY) {
     LOG_ERROR("Ice is not connected, state = [{}]",
@@ -1006,7 +986,7 @@ int IceTransmission::SendAudioFrame(const char *data, size_t size) {
   return ret;
 }
 
-int IceTransmission::SendDataFrame(const char *data, size_t size) {
+int IceTransport::SendDataFrame(const char *data, size_t size) {
   if (state_ != NICE_COMPONENT_STATE_CONNECTED &&
       state_ != NICE_COMPONENT_STATE_READY) {
     LOG_ERROR("Ice is not connected, state = [{}]",
@@ -1026,41 +1006,34 @@ int IceTransmission::SendDataFrame(const char *data, size_t size) {
   return 0;
 }
 
-uint8_t IceTransmission::CheckIsRtcpPacket(const char *buffer, size_t size) {
+uint8_t IceTransport::CheckIsRtpPacket(const char *buffer, size_t size) {
-  if (size < 4) {
+  if (size < 2) {
     return 0;
   }
 
-  uint8_t v = (buffer[0] >> 6) & 0x03;
+  uint8_t payload_type = buffer[1] & 0x7F;
-  if (2 != v) {
+  if (payload_type >= 96 && payload_type <= 127) {
+    return payload_type;
+  } else {
     return 0;
   }
-
-  uint8_t pt = buffer[1];
-
-  switch (pt) {
-    case RtcpHeader::PAYLOAD_TYPE::SR: {
-      return pt;
-    }
-    case RtcpHeader::PAYLOAD_TYPE::RR: {
-      return pt;
-    }
-    case RtcpHeader::PAYLOAD_TYPE::SDES: {
-      return pt;
-    }
-    case RtcpHeader::PAYLOAD_TYPE::BYE: {
-      return pt;
-    }
-    case RtcpHeader::PAYLOAD_TYPE::APP: {
-      return pt;
-    }
-    default: {
-      return 0;
-    }
-  }
 }
 
-uint8_t IceTransmission::CheckIsVideoPacket(const char *buffer, size_t size) {
+uint8_t IceTransport::CheckIsRtcpPacket(const char *buffer, size_t size) {
+  if (size < 2) {
+    return 0;
+  }
+
+  uint8_t payload_type = buffer[1];
+  if (payload_type >= 192 && payload_type <= 223) {
+    return payload_type;
+    ;
+  }
+
+  return 0;
+}
+
+uint8_t IceTransport::CheckIsVideoPacket(const char *buffer, size_t size) {
   if (size < 4) {
     return 0;
   }
@@ -1081,7 +1054,7 @@ uint8_t IceTransmission::CheckIsVideoPacket(const char *buffer, size_t size) {
   }
 }
 
-uint8_t IceTransmission::CheckIsAudioPacket(const char *buffer, size_t size) {
+uint8_t IceTransport::CheckIsAudioPacket(const char *buffer, size_t size) {
   if (size < 4) {
     return 0;
   }
@@ -1099,7 +1072,7 @@ uint8_t IceTransmission::CheckIsAudioPacket(const char *buffer, size_t size) {
   }
 }
 
-uint8_t IceTransmission::CheckIsDataPacket(const char *buffer, size_t size) {
+uint8_t IceTransport::CheckIsDataPacket(const char *buffer, size_t size) {
   if (size < 4) {
     return 0;
   }

src/transport/ice_transport.h

@@ -1,17 +1,21 @@
 /*
  * @Author: DI JUNKUN
- * @Date: 2023-11-24
+ * @Date: 2025-01-03
- * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
  */
 
-#ifndef _ICE_TRANSMISSION_H_
+#ifndef _ICE_TRANSPORT_H_
-#define _ICE_TRANSMISSION_H_
+#define _ICE_TRANSPORT_H_
 
 #include <iostream>
 
 #include "audio_decoder.h"
 #include "audio_encoder.h"
-#include "congestion_control.h"
+// #include "congestion_control.h"
+#include "audio_channel_receive.h"
+#include "audio_channel_send.h"
+#include "data_channel_receive.h"
+#include "data_channel_send.h"
 #include "ice_agent.h"
 #include "io_statistics.h"
 #include "ringbuffer.h"
@@ -23,11 +27,13 @@
 #include "rtp_packet.h"
 #include "rtp_video_receiver.h"
 #include "rtp_video_sender.h"
+#include "video_channel_receive.h"
+#include "video_channel_send.h"
 #include "video_decoder_factory.h"
 #include "video_encoder_factory.h"
 #include "ws_client.h"
 
-class IceTransmission {
+class IceTransport {
  public:
   typedef enum { VIDEO = 96, AUDIO = 97, DATA = 127 } DATA_TYPE;
   typedef enum { H264 = 96, AV1 = 99 } VIDEO_TYPE;
@@ -40,13 +46,13 @@ class IceTransmission {
   enum TraversalType { TP2P = 0, TRelay = 1, TUnknown = 2 };
 
  public:
-  IceTransmission(bool offer_peer, std::string &transmission_id,
+  IceTransport(bool offer_peer, std::string &transmission_id,
-                  std::string &user_id, std::string &remote_user_id,
+               std::string &user_id, std::string &remote_user_id,
-                  std::shared_ptr<WsClient> ice_ws_transmission,
+               std::shared_ptr<WsClient> ice_ws_transmission,
-                  std::function<void(std::string, const std::string &)>
+               std::function<void(std::string, const std::string &)>
-                      on_ice_status_change,
+                   on_ice_status_change,
-                  void *user_data);
+               void *user_data);
-  ~IceTransmission();
+  ~IceTransport();
 
  public:
   int SetLocalCapabilities(bool hardware_acceleration, bool use_trickle_ice,
@@ -131,6 +137,7 @@ class IceTransmission {
   int CreateAudioCodec();
 
  private:
+  uint8_t CheckIsRtpPacket(const char *buffer, size_t size);
   uint8_t CheckIsRtcpPacket(const char *buffer, size_t size);
   uint8_t CheckIsVideoPacket(const char *buffer, size_t size);
   uint8_t CheckIsAudioPacket(const char *buffer, size_t size);
@@ -164,7 +171,7 @@ class IceTransmission {
   std::unique_ptr<IceAgent> ice_agent_ = nullptr;
   bool is_closed_ = false;
   std::shared_ptr<WsClient> ice_ws_transport_ = nullptr;
-  CongestionControl *congestion_control_ = nullptr;
+  //   CongestionControl *congestion_control_ = nullptr;
   std::function<void(const XVideoFrame *, const char *, const size_t, void *)>
       on_receive_video_ = nullptr;
   std::function<void(const char *, size_t, const char *, const size_t, void *)>
@@ -181,6 +188,13 @@ class IceTransmission {
       on_receive_net_status_report_ = nullptr;
 
  private:
+  std::unique_ptr<VideoChannelSend> video_channel_send_ = nullptr;
+  std::unique_ptr<VideoChannelReceive> video_channel_receive_ = nullptr;
+  std::unique_ptr<AudioChannelSend> audio_channel_send_ = nullptr;
+  std::unique_ptr<AudioChannelReceive> audio_channel_receive_ = nullptr;
+  std::unique_ptr<DataChannelSend> data_channel_send_ = nullptr;
+  std::unique_ptr<DataChannelReceive> data_channel_receive_ = nullptr;
+
   std::unique_ptr<RtpCodec> video_rtp_codec_ = nullptr;
   std::unique_ptr<RtpCodec> audio_rtp_codec_ = nullptr;
   std::unique_ptr<RtpCodec> data_rtp_codec_ = nullptr;

xmake.lua

@@ -192,18 +192,29 @@ target("qos")
     add_files("src/qos/*.cpp")
     add_includedirs("src/qos", {public = true})
 
+-- target("transport")
+--     set_kind("object")
+--     add_deps("log", "ws", "ice", "qos", "rtp", "rtcp", "statistics", "media")
+--     add_files("src/transport/*.cpp")
+--     add_includedirs("src/ws", "src/ice", "src/qos", {public = true})
 
-target("transmission")
+target("transport")
     set_kind("object")
-    add_deps("log", "ws", "ice", "qos", "rtp", "rtcp", "statistics", "media")
+    add_deps("log", "ws", "ice", "channel", "rtp", "rtcp", "statistics", "media")
-    add_files("src/transmission/*.cpp")
+    add_files("src/transport/*.cpp")
-    add_includedirs("src/ws", "src/ice", "src/qos", {public = true})
+    add_includedirs("src/ws", "src/ice", "src/channel", {public = true})
+
+target("channel")
+    set_kind("object")
+    add_deps("log", "rtp", "rtcp")
+    add_files("src/channel/*.cpp")
+    add_includedirs("src/rtp", "src/rtcp", {public = true})
 
 target("pc")
     set_kind("object")
-    add_deps("log", "ws", "ice", "transmission", "inih", "common")
+    add_deps("log", "ws", "ice", "transport", "inih", "common")
     add_files("src/pc/*.cpp")
-    add_includedirs("src/transmission", "src/interface", {public = true})
+    add_includedirs("src/transport", "src/interface", {public = true})
 
 target("projectx")
     set_kind("static")