[feat] introduce fraction lost into congestion control module

src/channel/meida_channel/video_channel_send.cpp

@@ -0,0 +1,71 @@
+#include "video_channel_send.h"
+
+#include "log.h"
+#include "rtc_base/network/sent_packet.h"
+
+VideoChannelSend::VideoChannelSend() {}
+
+VideoChannelSend::~VideoChannelSend() {}
+
+VideoChannelSend::VideoChannelSend(
+    std::shared_ptr<SystemClock> clock, std::shared_ptr<IceAgent> ice_agent,
+    std::shared_ptr<IOStatistics> ice_io_statistics,
+    std::function<void(const webrtc::RtpPacketToSend& packet)>
+        on_sent_packet_func)
+    : ice_agent_(ice_agent),
+      ice_io_statistics_(ice_io_statistics),
+      on_sent_packet_func_(on_sent_packet_func),
+      clock_(clock){};
+
+void VideoChannelSend::Initialize(rtp::PAYLOAD_TYPE payload_type) {
+  rtp_video_sender_ =
+      std::make_unique<RtpVideoSender>(clock_, ice_io_statistics_);
+  rtp_packetizer_ =
+      RtpPacketizer::Create(payload_type, rtp_video_sender_->GetSsrc());
+  rtp_video_sender_->SetSendDataFunc(
+      [this](const char* data, size_t size) -> int {
+        if (!ice_agent_) {
+          LOG_ERROR("ice_agent_ is nullptr");
+          return -1;
+        }
+
+        auto ice_state = ice_agent_->GetIceState();
+
+        if (ice_state != NICE_COMPONENT_STATE_CONNECTED &&
+            ice_state != NICE_COMPONENT_STATE_READY) {
+          // LOG_ERROR("Ice is not connected, state = [{}]",
+          //           nice_component_state_to_string(ice_state));
+          return -2;
+        }
+
+        ice_io_statistics_->UpdateVideoOutboundBytes((uint32_t)size);
+
+        return ice_agent_->Send(data, size);
+      });
+
+  rtp_video_sender_->SetOnSentPacketFunc(
+      [this](const webrtc::RtpPacketToSend& packet) -> void {
+        on_sent_packet_func_(packet);
+      });
+
+  rtp_video_sender_->Start();
+}
+
+void VideoChannelSend::Destroy() {
+  if (rtp_video_sender_) {
+    rtp_video_sender_->Stop();
+  }
+}
+
+int VideoChannelSend::SendVideo(
+    std::shared_ptr<VideoFrameWrapper> encoded_frame) {
+  if (rtp_video_sender_ && rtp_packetizer_) {
+    std::vector<std::shared_ptr<RtpPacket>> rtp_packets =
+        rtp_packetizer_->Build((uint8_t*)encoded_frame->Buffer(),
+                               (uint32_t)encoded_frame->Size(),
+                               encoded_frame->CaptureTimestamp(), true);
+    rtp_video_sender_->Enqueue(rtp_packets, encoded_frame->CaptureTimestamp());
+  }
+
+  return 0;
+}