diff --git a/src/frame/audio_frame.cpp b/src/frame/audio_frame.cpp
new file mode 100644
index 0000000..ac9b7c3
--- /dev/null
+++ b/src/frame/audio_frame.cpp
@@ -0,0 +1,92 @@
+#include "audio_frame.h"
+
+#include <string.h>
+
+#include <string>
+
+AudioFrame::AudioFrame() {}
+
+AudioFrame::AudioFrame(size_t size) {
+  buffer_ = new uint8_t[size];
+  size_ = size;
+  width_ = 0;
+  height_ = 0;
+}
+
+AudioFrame::AudioFrame(const uint8_t *buffer, size_t size) {
+  buffer_ = new uint8_t[size];
+  memcpy(buffer_, buffer, size);
+  size_ = size;
+  width_ = 0;
+  height_ = 0;
+}
+
+AudioFrame::AudioFrame(const uint8_t *buffer, size_t size, size_t width,
+                       size_t height) {
+  buffer_ = new uint8_t[size];
+  memcpy(buffer_, buffer, size);
+  size_ = size;
+  width_ = width;
+  height_ = height;
+}
+
+AudioFrame::AudioFrame(const AudioFrame &audio_frame) {
+  if (audio_frame.size_ > 0) {
+    buffer_ = new uint8_t[audio_frame.size_];
+    memcpy(buffer_, audio_frame.buffer_, audio_frame.size_);
+    size_ = audio_frame.size_;
+    width_ = audio_frame.width_;
+    height_ = audio_frame.height_;
+  }
+}
+
+AudioFrame::AudioFrame(AudioFrame &&audio_frame)
+    : buffer_((uint8_t *)std::move(audio_frame.buffer_)),
+      size_(audio_frame.size_),
+      width_(audio_frame.width_),
+      height_(audio_frame.height_) {
+  audio_frame.buffer_ = nullptr;
+  audio_frame.size_ = 0;
+  audio_frame.width_ = 0;
+  audio_frame.height_ = 0;
+}
+
+AudioFrame &AudioFrame::operator=(const AudioFrame &audio_frame) {
+  if (&audio_frame != this) {
+    if (buffer_) {
+      delete buffer_;
+      buffer_ = nullptr;
+    }
+    buffer_ = new uint8_t[audio_frame.size_];
+    memcpy(buffer_, audio_frame.buffer_, audio_frame.size_);
+    size_ = audio_frame.size_;
+    width_ = audio_frame.width_;
+    height_ = audio_frame.height_;
+  }
+  return *this;
+}
+
+AudioFrame &AudioFrame::operator=(AudioFrame &&audio_frame) {
+  if (&audio_frame != this) {
+    buffer_ = std::move(audio_frame.buffer_);
+    audio_frame.buffer_ = nullptr;
+    size_ = audio_frame.size_;
+    audio_frame.size_ = 0;
+    width_ = audio_frame.width_;
+    audio_frame.width_ = 0;
+    height_ = audio_frame.height_;
+    audio_frame.height_ = 0;
+  }
+  return *this;
+}
+
+AudioFrame::~AudioFrame() {
+  if (buffer_) {
+    delete buffer_;
+    buffer_ = nullptr;
+  }
+
+  size_ = 0;
+  width_ = 0;
+  height_ = 0;
+}
\ No newline at end of file
diff --git a/src/frame/audio_frame.h b/src/frame/audio_frame.h
new file mode 100644
index 0000000..3ad4a6b
--- /dev/null
+++ b/src/frame/audio_frame.h
@@ -0,0 +1,39 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _AUDIO_FRAME_H_
+#define _AUDIO_FRAME_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+class AudioFrame {
+ public:
+  AudioFrame();
+  AudioFrame(size_t size);
+  AudioFrame(const uint8_t *buffer, size_t size);
+  AudioFrame(const uint8_t *buffer, size_t size, size_t width, size_t height);
+  AudioFrame(const AudioFrame &audio_frame);
+  AudioFrame(AudioFrame &&audio_frame);
+  AudioFrame &operator=(const AudioFrame &audio_frame);
+  AudioFrame &operator=(AudioFrame &&audio_frame);
+
+  ~AudioFrame();
+
+ public:
+  const uint8_t *Buffer() { return buffer_; }
+  const size_t Size() { return size_; }
+
+  uint8_t *GetBuffer() { return buffer_; }
+
+ private:
+  size_t width_ = 0;
+  size_t height_ = 0;
+  uint8_t *buffer_ = nullptr;
+  size_t size_ = 0;
+};
+
+#endif
\ No newline at end of file
diff --git a/src/frame/frame.cpp b/src/frame/video_frame.cpp
similarity index 98%
rename from src/frame/frame.cpp
rename to src/frame/video_frame.cpp
index eac78bc..1a201af 100644
--- a/src/frame/frame.cpp
+++ b/src/frame/video_frame.cpp
@@ -1,4 +1,4 @@
-#include "frame.h"
+#include "video_frame.h"
 
 #include <string.h>
 
diff --git a/src/frame/frame.h b/src/frame/video_frame.h
similarity index 81%
rename from src/frame/frame.h
rename to src/frame/video_frame.h
index 41af760..de55742 100644
--- a/src/frame/frame.h
+++ b/src/frame/video_frame.h
@@ -1,8 +1,14 @@
-#ifndef _FRAME_H_
-#define _FRAME_H_
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _VIDEO_FRAME_H_
+#define _VIDEO_FRAME_H_
 
-#include <stdint.h>
 #include <stddef.h>
+#include <stdint.h>
 
 class VideoFrame {
  public:
diff --git a/src/ice/ice_agent.cpp b/src/ice/ice_agent.cpp
index b44db99..b126f27 100644
--- a/src/ice/ice_agent.cpp
+++ b/src/ice/ice_agent.cpp
@@ -83,7 +83,6 @@ int IceAgent::CreateIceAgent(nice_cb_state_changed_t on_state_changed,
 
     g_main_loop_run(gloop_);
     exit_nice_thread_ = true;
-    g_main_loop_unref(gloop_);
   }));
 
   do {
@@ -96,7 +95,6 @@ int IceAgent::CreateIceAgent(nice_cb_state_changed_t on_state_changed,
 }
 
 void cb_closed(GObject *src, GAsyncResult *res, gpointer data) {
-  LOG_ERROR("cb_closed");
   NiceAgent *agent = NICE_AGENT(src);
   g_debug("test-turn:%s: %p", G_STRFUNC, agent);
 
diff --git a/src/ice/ice_agent.h b/src/ice/ice_agent.h
index 83f52a2..d8460b6 100644
--- a/src/ice/ice_agent.h
+++ b/src/ice/ice_agent.h
@@ -1,9 +1,9 @@
 #ifndef _ICE_AGENT_H_
 #define _ICE_AGENT_H_
 
+#include <atomic>
 #include <iostream>
 #include <thread>
-#include <atomic>
 
 #include "gio/gnetworking.h"
 #include "glib.h"
diff --git a/src/interface/x.h b/src/interface/x.h
index 66e4d4b..8be266d 100644
--- a/src/interface/x.h
+++ b/src/interface/x.h
@@ -14,11 +14,20 @@ enum DATA_TYPE { VIDEO = 0, AUDIO, DATA };
 enum ConnectionStatus {
   Connecting = 0,
   Connected,
+  Disconnected,
   Failed,
   Closed,
   IncorrectPassword
 };
 
+enum SignalStatus {
+  SignalConnecting = 0,
+  SignalConnected,
+  SignalFailed,
+  SignalClosed,
+  SignalReconnecting
+};
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -27,6 +36,8 @@ typedef struct Peer PeerPtr;
 
 typedef void (*OnReceiveBuffer)(const char*, size_t, const char*, size_t);
 
+typedef void (*OnSignalStatus)(SignalStatus status);
+
 typedef void (*OnConnectionStatus)(ConnectionStatus status);
 
 typedef void (*NetStatusReport)(const unsigned short, const unsigned short);
@@ -36,6 +47,7 @@ typedef struct {
   OnReceiveBuffer on_receive_video_buffer;
   OnReceiveBuffer on_receive_audio_buffer;
   OnReceiveBuffer on_receive_data_buffer;
+  OnSignalStatus on_signal_status;
   OnConnectionStatus on_connection_status;
   NetStatusReport net_status_report;
 } Params;
diff --git a/src/media/audio/decode/audio_decoder.cpp b/src/media/audio/decode/audio_decoder.cpp
new file mode 100644
index 0000000..767f25c
--- /dev/null
+++ b/src/media/audio/decode/audio_decoder.cpp
@@ -0,0 +1,66 @@
+#include "audio_decoder.h"
+
+#include "log.h"
+
+#define MAX_FRAME_SIZE 6 * 960
+#define CHANNELS 1
+unsigned char pcm_bytes[MAX_FRAME_SIZE * CHANNELS * 2];
+opus_int16 out_data[MAX_FRAME_SIZE * CHANNELS];
+
+AudioDecoder::AudioDecoder(int sample_rate, int channel_num, int frame_size)
+    : sample_rate_(sample_rate),
+      channel_num_(channel_num),
+      frame_size_(frame_size) {}
+
+AudioDecoder::~AudioDecoder() {
+  if (opus_decoder_) {
+    opus_decoder_destroy(opus_decoder_);
+  }
+}
+
+int AudioDecoder::Init() {
+  int err;
+  opus_decoder_ = opus_decoder_create(sample_rate_, channel_num_, &err);
+  opus_decoder_ctl(opus_decoder_, OPUS_SET_LSB_DEPTH(16));
+  // opus_decoder_ctl(opus_decoder_, OPUS_SET_INBAND_FEC(1));
+
+  if (err < 0 || opus_decoder_ == NULL) {
+    LOG_ERROR("Create opus opus_decoder_ failed");
+    return -1;
+  }
+
+  // pcm_file = fopen("decode.pcm", "wb+");
+  // pcm_file1 = fopen("decode1.pcm", "wb+");
+
+  return 0;
+}
+
+int AudioDecoder::Decode(
+    const uint8_t* data, int size,
+    std::function<void(uint8_t*, int)> on_receive_decoded_frame) {
+  // LOG_ERROR("input opus size = {}", size);
+  auto frame_size =
+      opus_decode(opus_decoder_, data, size, out_data, MAX_FRAME_SIZE, 0);
+
+  if (frame_size < 0) {
+    LOG_ERROR("Decode opus frame failed");
+    return -1;
+  }
+
+  // LOG_ERROR("frame_size = {}", frame_size);
+
+  // for (auto i = 0; i < channel_num_ * frame_size; i++) {
+  //   pcm_bytes[2 * i] = out_data[i] & 0xFF;
+  //   pcm_bytes[2 * i + 1] = (out_data[i] >> 8) & 0xFF;
+  // }
+
+  // fwrite(pcm_bytes, sizeof(short), frame_size * channel_num_, pcm_file);
+  // fflush(pcm_file);
+
+  if (on_receive_decoded_frame) {
+    on_receive_decoded_frame((uint8_t*)out_data,
+                             frame_size * channel_num_ * sizeof(opus_int16));
+  }
+
+  return 0;
+}
diff --git a/src/media/audio/decode/audio_decoder.h b/src/media/audio/decode/audio_decoder.h
new file mode 100644
index 0000000..0ac7ea9
--- /dev/null
+++ b/src/media/audio/decode/audio_decoder.h
@@ -0,0 +1,42 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _AUDIO_DECODER_H_
+#define _AUDIO_DECODER_H_
+
+#include <stdio.h>
+
+#include <functional>
+#include <mutex>
+#include <queue>
+#include <thread>
+#include <vector>
+
+#include "audio_frame.h"
+#include "opus/opus.h"
+
+class AudioDecoder {
+ public:
+  AudioDecoder(int sample_rate, int channel_num, int frame_size);
+  ~AudioDecoder();
+
+ public:
+  int Init();
+  int Decode(const uint8_t *data, int size,
+             std::function<void(uint8_t *, int)> on_receive_decoded_frame);
+
+ private:
+  /* data */
+  OpusDecoder *opus_decoder_ = nullptr;
+  int sample_rate_ = 48000;
+  int channel_num_ = 1;
+  int frame_size_ = 0;
+
+  FILE *pcm_file;
+  FILE *pcm_file1;
+};
+
+#endif
\ No newline at end of file
diff --git a/src/media/audio/decode/opus_decoder.cpp b/src/media/audio/decode/opus_decoder.cpp
deleted file mode 100644
index e69de29..0000000
diff --git a/src/media/audio/decode/opus_decoder.h b/src/media/audio/decode/opus_decoder.h
deleted file mode 100644
index e69de29..0000000
diff --git a/src/media/audio/encode/audio_encoder.cpp b/src/media/audio/encode/audio_encoder.cpp
new file mode 100644
index 0000000..104a5d4
--- /dev/null
+++ b/src/media/audio/encode/audio_encoder.cpp
@@ -0,0 +1,93 @@
+#include "audio_encoder.h"
+
+#include <stdlib.h>
+
+#include <chrono>
+#include <cstring>
+
+#include "log.h"
+
+#define MAX_PACKET_SIZE 4000
+unsigned char output_data[MAX_PACKET_SIZE] = {0};
+static uint32_t last_ts = 0;
+static unsigned char out_data[MAX_PACKET_SIZE] = {0};
+
+AudioEncoder::AudioEncoder(int sample_rate, int channel_num, int frame_size)
+    : sample_rate_(sample_rate),
+      channel_num_(channel_num),
+      frame_size_(frame_size) {}
+
+AudioEncoder::~AudioEncoder() {
+  if (opus_encoder_) {
+    opus_encoder_destroy(opus_encoder_);
+  }
+}
+
+int AudioEncoder::Init() {
+  last_ts = static_cast<uint32_t>(
+      std::chrono::duration_cast<std::chrono::milliseconds>(
+          std::chrono::high_resolution_clock::now().time_since_epoch())
+          .count());
+  int err;
+  int applications[3] = {OPUS_APPLICATION_AUDIO, OPUS_APPLICATION_VOIP,
+                         OPUS_APPLICATION_RESTRICTED_LOWDELAY};
+
+  opus_encoder_ = opus_encoder_create(sample_rate_, channel_num_,
+                                      OPUS_APPLICATION_VOIP, &err);
+
+  if (err != OPUS_OK || opus_encoder_ == NULL) {
+    LOG_ERROR("Create opus encoder failed");
+  }
+
+  // opus_encoder_ctl(opus_encoder_, OPUS_SET_VBR(0));
+  // opus_encoder_ctl(opus_encoder_, OPUS_SET_VBR_CONSTRAINT(true));
+  // opus_encoder_ctl(opus_encoder_,
+  //                  OPUS_SET_BITRATE(sample_rate_ * channel_num_));
+  // opus_encoder_ctl(opus_encoder_, OPUS_SET_COMPLEXITY(0));
+  // opus_encoder_ctl(opus_encoder_, OPUS_SET_SIGNAL(OPUS_APPLICATION_VOIP));
+  opus_encoder_ctl(opus_encoder_, OPUS_SET_LSB_DEPTH(16));
+  // opus_encoder_ctl(opus_encoder_, OPUS_SET_DTX(0));
+  // opus_encoder_ctl(opus_encoder_, OPUS_SET_INBAND_FEC(1));
+  opus_encoder_ctl(opus_encoder_,
+                   OPUS_SET_EXPERT_FRAME_DURATION(OPUS_FRAMESIZE_10_MS));
+
+  return 0;
+}
+
+int AudioEncoder::Encode(
+    const uint8_t *data, int size,
+    std::function<int(char *encoded_audio_buffer, size_t size)>
+        on_encoded_audio_buffer) {
+  if (!on_encoded_audio_buffer_) {
+    on_encoded_audio_buffer_ = on_encoded_audio_buffer;
+  }
+
+  // uint32_t now_ts = static_cast<uint32_t>(
+  //     std::chrono::duration_cast<std::chrono::milliseconds>(
+  //         std::chrono::high_resolution_clock::now().time_since_epoch())
+  //         .count());
+
+  // printf("1 Time cost: %d size: %d\n", now_ts - last_ts, size);
+  // last_ts = now_ts;
+
+  auto ret = opus_encode(opus_encoder_, (opus_int16 *)data, size, out_data,
+                         MAX_PACKET_SIZE);
+  if (ret < 0) {
+    printf("opus decode failed, %d\n", ret);
+    return -1;
+  }
+
+  if (on_encoded_audio_buffer_) {
+    on_encoded_audio_buffer_((char *)out_data, ret);
+  } else {
+    OnEncodedAudioBuffer((char *)out_data, ret);
+  }
+
+  return 0;
+}
+
+int AudioEncoder::OnEncodedAudioBuffer(char *encoded_audio_buffer,
+                                       size_t size) {
+  LOG_INFO("OnEncodedAudioBuffer not implemented");
+  return 0;
+}
diff --git a/src/media/audio/encode/audio_encoder.h b/src/media/audio/encode/audio_encoder.h
new file mode 100644
index 0000000..e24d593
--- /dev/null
+++ b/src/media/audio/encode/audio_encoder.h
@@ -0,0 +1,41 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _AUDIO_ENCODER_H_
+#define _AUDIO_ENCODER_H_
+
+#include <functional>
+#include <mutex>
+#include <queue>
+#include <thread>
+#include <vector>
+
+#include "opus/opus.h"
+
+class AudioEncoder {
+ public:
+  AudioEncoder(int sample_rate, int channel_num, int frame_size);
+  ~AudioEncoder();
+
+ public:
+  int Init();
+  int Encode(const uint8_t* data, int size,
+             std::function<int(char* encoded_audio_buffer, size_t size)>
+                 on_encoded_audio_buffer);
+  int OnEncodedAudioBuffer(char* encoded_audio_buffer, size_t size);
+
+ private:
+  OpusEncoder* opus_encoder_ = nullptr;
+  int sample_rate_ = 48000;
+  int channel_num_ = 1;
+  int frame_size_ = 480;
+
+  std::queue<unsigned char> pcm_queue;
+  std::function<int(char* encoded_audio_buffer, size_t size)>
+      on_encoded_audio_buffer_ = nullptr;
+};
+
+#endif
\ No newline at end of file
diff --git a/src/media/audio/encode/opus_encoder.cpp b/src/media/audio/encode/opus_encoder.cpp
deleted file mode 100644
index e69de29..0000000
diff --git a/src/media/audio/encode/opus_encoder.h b/src/media/audio/encode/opus_encoder.h
deleted file mode 100644
index e69de29..0000000
diff --git a/src/media/video/decode/video_decoder.h b/src/media/video/decode/video_decoder.h
index 4676c80..05b7aec 100644
--- a/src/media/video/decode/video_decoder.h
+++ b/src/media/video/decode/video_decoder.h
@@ -1,9 +1,15 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
 #ifndef _VIDEO_DECODER_H_
 #define _VIDEO_DECODER_H_
 
 #include <functional>
 
-#include "frame.h"
+#include "video_frame.h"
 
 class VideoDecoder {
  public:
diff --git a/src/pc/peer_connection.cpp b/src/pc/peer_connection.cpp
index e1fbb66..ef57265 100644
--- a/src/pc/peer_connection.cpp
+++ b/src/pc/peer_connection.cpp
@@ -65,10 +65,30 @@ int PeerConnection::Init(PeerConnectionParams params,
   on_receive_video_buffer_ = params.on_receive_video_buffer;
   on_receive_audio_buffer_ = params.on_receive_audio_buffer;
   on_receive_data_buffer_ = params.on_receive_data_buffer;
+  on_signal_status_ = params.on_signal_status;
   on_connection_status_ = params.on_connection_status;
 
   on_receive_ws_msg_ = [this](const std::string &msg) { ProcessSignal(msg); };
 
+  on_ws_status_ = [this](WsStatus ws_status) {
+    if (WsStatus::WsOpening == ws_status) {
+      signal_status_ = SignalStatus::SignalConnecting;
+      on_signal_status_(SignalStatus::SignalConnecting);
+    } else if (WsStatus::WsOpened == ws_status) {
+      signal_status_ = SignalStatus::SignalConnected;
+      on_signal_status_(SignalStatus::SignalConnected);
+    } else if (WsStatus::WsFailed == ws_status) {
+      signal_status_ = SignalStatus::SignalFailed;
+      on_signal_status_(SignalStatus::SignalFailed);
+    } else if (WsStatus::WsClosed == ws_status) {
+      signal_status_ = SignalStatus::SignalClosed;
+      on_signal_status_(SignalStatus::SignalClosed);
+    } else if (WsStatus::WsReconnecting == ws_status) {
+      signal_status_ = SignalStatus::SignalReconnecting;
+      on_signal_status_(SignalStatus::SignalReconnecting);
+    }
+  };
+
   on_receive_video_ = [this](const char *data, size_t size, const char *user_id,
                              size_t user_id_size) {
     int num_frame_returned = video_decoder_->Decode(
@@ -83,9 +103,14 @@ int PeerConnection::Init(PeerConnectionParams params,
 
   on_receive_audio_ = [this](const char *data, size_t size, const char *user_id,
                              size_t user_id_size) {
-    if (on_receive_audio_buffer_) {
-      on_receive_audio_buffer_(data, size, user_id, user_id_size);
-    }
+    int num_frame_returned = audio_decoder_->Decode(
+        (uint8_t *)data, size,
+        [this, user_id, user_id_size](uint8_t *data, int size) {
+          if (on_receive_audio_buffer_) {
+            on_receive_audio_buffer_((const char *)data, size, user_id,
+                                     user_id_size);
+          }
+        });
   };
 
   on_receive_data_ = [this](const char *data, size_t size, const char *user_id,
@@ -96,7 +121,12 @@ int PeerConnection::Init(PeerConnectionParams params,
   };
 
   on_ice_status_change_ = [this](std::string ice_status) {
-    if ("completed" == ice_status || "ready" == ice_status) {
+    if ("connecting" == ice_status) {
+      on_connection_status_(ConnectionStatus::Connecting);
+    } else if ("disconnected" == ice_status) {
+      on_connection_status_(ConnectionStatus::Disconnected);
+    } else if ("completed" == ice_status || "ready" == ice_status ||
+               "connected" == ice_status) {
       ice_ready_ = true;
       on_connection_status_(ConnectionStatus::Connected);
       b_force_i_frame_ = true;
@@ -110,18 +140,25 @@ int PeerConnection::Init(PeerConnectionParams params,
     }
   };
 
-  ws_transport_ = std::make_shared<WsTransmission>(on_receive_ws_msg_);
+  ws_transport_ =
+      std::make_shared<WsTransmission>(on_receive_ws_msg_, on_ws_status_);
   uri_ = "ws://" + cfg_signal_server_ip_ + ":" + cfg_signal_server_port_;
   if (ws_transport_) {
     ws_transport_->Connect(uri_);
   }
 
-  do {
-  } while (SignalStatus::SignalConnected != GetSignalStatus());
+  // do {
+  // } while (SignalStatus::SignalConnected != GetSignalStatus());
 
   nv12_data_ = new char[1280 * 720 * 3 / 2];
 
   if (0 != CreateVideoCodec(hardware_acceleration_)) {
+    LOG_ERROR("Create video codec failed");
+    return -1;
+  }
+
+  if (0 != CreateAudioCodec()) {
+    LOG_ERROR("Create audio codec failed");
     return -1;
   }
 
@@ -185,9 +222,30 @@ int PeerConnection::CreateVideoCodec(bool hardware_acceleration) {
   return 0;
 }
 
+int PeerConnection::CreateAudioCodec() {
+  audio_encoder_ = std::make_unique<AudioEncoder>(AudioEncoder(48000, 1, 480));
+  if (!audio_encoder_ || 0 != audio_encoder_->Init()) {
+    LOG_ERROR("Audio encoder init failed");
+    return -1;
+  }
+
+  audio_decoder_ = std::make_unique<AudioDecoder>(AudioDecoder(48000, 1, 480));
+  if (!audio_decoder_ || 0 != audio_decoder_->Init()) {
+    LOG_ERROR("Audio decoder init failed");
+    return -1;
+  }
+
+  return 0;
+}
+
 int PeerConnection::Create(PeerConnectionParams params,
                            const std::string &transmission_id,
                            const std::string &password) {
+  if (SignalStatus::SignalConnected != GetSignalStatus()) {
+    LOG_ERROR("Signal not connected");
+    return -1;
+  }
+
   int ret = 0;
 
   password_ = password;
@@ -208,6 +266,11 @@ int PeerConnection::Create(PeerConnectionParams params,
 int PeerConnection::Join(PeerConnectionParams params,
                          const std::string &transmission_id,
                          const std::string &password) {
+  if (SignalStatus::SignalConnected != GetSignalStatus()) {
+    LOG_ERROR("Signal not connected");
+    return -1;
+  }
+
   int ret = 0;
 
   password_ = password;
@@ -218,6 +281,11 @@ int PeerConnection::Join(PeerConnectionParams params,
 }
 
 int PeerConnection::Leave() {
+  if (SignalStatus::SignalConnected != GetSignalStatus()) {
+    LOG_ERROR("Signal not connected");
+    return -1;
+  }
+
   json message = {{"type", "leave_transmission"},
                   {"user_id", user_id_},
                   {"transmission_id", transmission_id_}};
@@ -245,8 +313,6 @@ void PeerConnection::ProcessSignal(const std::string &signal) {
       ws_connection_id_ = j["ws_connection_id"].get<unsigned int>();
       LOG_INFO("Receive local peer websocket connection id [{}]",
                ws_connection_id_);
-      std::lock_guard<std::mutex> l(signal_status_mutex_);
-      signal_status_ = SignalStatus::SignalConnected;
       break;
     }
     case "transmission_id"_H: {
@@ -305,7 +371,7 @@ void PeerConnection::ProcessSignal(const std::string &signal) {
           ice_transmission_list_[remote_user_id]->JoinTransmission();
         }
 
-        on_connection_status_(ConnectionStatus::Connecting);
+        // on_connection_status_(ConnectionStatus::Connecting);
       }
 
       break;
@@ -363,6 +429,8 @@ void PeerConnection::ProcessSignal(const std::string &signal) {
         ice_transmission_list_[remote_user_id]->SetRemoteSdp(remote_sdp);
 
         ice_transmission_list_[remote_user_id]->GatherCandidates();
+
+        on_connection_status_(ConnectionStatus::Connecting);
       }
       break;
     }
@@ -381,6 +449,8 @@ void PeerConnection::ProcessSignal(const std::string &signal) {
             ice_transmission_list_.end()) {
           ice_transmission_list_[remote_user_id]->SetRemoteSdp(remote_sdp);
         }
+
+        on_connection_status_(ConnectionStatus::Connecting);
       }
       break;
     }
@@ -392,6 +462,11 @@ void PeerConnection::ProcessSignal(const std::string &signal) {
 
 int PeerConnection::RequestTransmissionMemberList(
     const std::string &transmission_id, const std::string &password) {
+  if (SignalStatus::SignalConnected != GetSignalStatus()) {
+    LOG_ERROR("Signal not connected");
+    return -1;
+  }
+
   LOG_INFO("Request member list");
 
   json message = {{"type", "query_user_id_list"},
@@ -445,9 +520,17 @@ int PeerConnection::SendVideoData(const char *data, size_t size) {
 }
 
 int PeerConnection::SendAudioData(const char *data, size_t size) {
-  for (auto &ice_trans : ice_transmission_list_) {
-    ice_trans.second->SendData(IceTransmission::DATA_TYPE::AUDIO, data, size);
-  }
+  int ret = audio_encoder_->Encode(
+      (uint8_t *)data, size,
+      [this](char *encoded_audio_buffer, size_t size) -> int {
+        for (auto &ice_trans : ice_transmission_list_) {
+          // LOG_ERROR("opus frame size: [{}]", size);
+          ice_trans.second->SendData(IceTransmission::DATA_TYPE::AUDIO,
+                                     encoded_audio_buffer, size);
+        }
+        return 0;
+      });
+
   return 0;
 }
 
diff --git a/src/pc/peer_connection.h b/src/pc/peer_connection.h
index 8f36f05..6942708 100644
--- a/src/pc/peer_connection.h
+++ b/src/pc/peer_connection.h
@@ -5,17 +5,19 @@
 #include <map>
 #include <mutex>
 
+#include "audio_decoder.h"
+#include "audio_encoder.h"
 #include "ice_transmission.h"
 #include "video_decoder_factory.h"
 #include "video_encoder_factory.h"
 #include "ws_transmission.h"
 #include "x.h"
 
-enum SignalStatus { SignalConnecting = 0, SignalConnected, SignalClosed };
-
 typedef void (*OnReceiveBuffer)(const char *, size_t, const char *,
                                 const size_t);
 
+typedef void (*OnSignalStatus)(SignalStatus status);
+
 typedef void (*OnConnectionStatus)(ConnectionStatus status);
 
 typedef void (*NetStatusReport)(const unsigned short, const unsigned short);
@@ -25,6 +27,7 @@ typedef struct {
   OnReceiveBuffer on_receive_video_buffer;
   OnReceiveBuffer on_receive_audio_buffer;
   OnReceiveBuffer on_receive_data_buffer;
+  OnSignalStatus on_signal_status;
   OnConnectionStatus on_connection_status;
   NetStatusReport net_status_report;
 } PeerConnectionParams;
@@ -56,6 +59,7 @@ class PeerConnection {
 
  private:
   int CreateVideoCodec(bool hardware_acceleration);
+  int CreateAudioCodec();
 
   void ProcessSignal(const std::string &signal);
 
@@ -81,12 +85,14 @@ class PeerConnection {
  private:
   std::shared_ptr<WsTransmission> ws_transport_ = nullptr;
   std::function<void(const std::string &)> on_receive_ws_msg_ = nullptr;
+  std::function<void(WsStatus)> on_ws_status_ = nullptr;
   unsigned int ws_connection_id_ = 0;
   std::string user_id_ = "";
   std::string transmission_id_ = "";
   std::vector<std::string> user_id_list_;
   SignalStatus signal_status_ = SignalStatus::SignalClosed;
   std::mutex signal_status_mutex_;
+  bool leave_ = false;
 
  private:
   std::map<std::string, std::unique_ptr<IceTransmission>>
@@ -103,6 +109,7 @@ class PeerConnection {
   OnReceiveBuffer on_receive_video_buffer_;
   OnReceiveBuffer on_receive_audio_buffer_;
   OnReceiveBuffer on_receive_data_buffer_;
+  OnSignalStatus on_signal_status_;
   OnConnectionStatus on_connection_status_;
   char *nv12_data_ = nullptr;
   bool inited_ = false;
@@ -114,6 +121,10 @@ class PeerConnection {
   bool hardware_accelerated_encode_ = false;
   bool hardware_accelerated_decode_ = false;
   bool b_force_i_frame_ = false;
+
+ private:
+  std::unique_ptr<AudioEncoder> audio_encoder_ = nullptr;
+  std::unique_ptr<AudioDecoder> audio_decoder_ = nullptr;
 };
 
 #endif
\ No newline at end of file
diff --git a/src/rtc/x_inner.cpp b/src/rtc/x_inner.cpp
index 89e32c8..28247a5 100644
--- a/src/rtc/x_inner.cpp
+++ b/src/rtc/x_inner.cpp
@@ -19,6 +19,7 @@ PeerPtr *CreatePeer(const Params *params) {
   peer_ptr->pc_params.on_receive_video_buffer = params->on_receive_video_buffer;
   peer_ptr->pc_params.on_receive_audio_buffer = params->on_receive_audio_buffer;
   peer_ptr->pc_params.on_receive_data_buffer = params->on_receive_data_buffer;
+  peer_ptr->pc_params.on_signal_status = params->on_signal_status;
   peer_ptr->pc_params.on_connection_status = params->on_connection_status;
   peer_ptr->pc_params.net_status_report = params->net_status_report;
 
@@ -26,21 +27,36 @@ PeerPtr *CreatePeer(const Params *params) {
 }
 
 int Init(PeerPtr *peer_ptr, const char *user_id) {
+  if (!peer_ptr) {
+    LOG_ERROR("peer_ptr not created");
+    return -1;
+  }
+
   peer_ptr->peer_connection->Init(peer_ptr->pc_params, user_id);
   return 0;
 }
 
 int CreateConnection(PeerPtr *peer_ptr, const char *transmission_id,
                      const char *password) {
-  peer_ptr->peer_connection->Create(peer_ptr->pc_params, transmission_id,
-                                    password);
+  if (!peer_ptr) {
+    LOG_ERROR("peer_ptr not created");
+    return -1;
+  }
+
   LOG_INFO("CreateConnection [{}] with password [{}]", transmission_id,
            password);
-  return 0;
+
+  return peer_ptr->peer_connection->Create(peer_ptr->pc_params, transmission_id,
+                                           password);
 }
 
 int JoinConnection(PeerPtr *peer_ptr, const char *transmission_id,
                    const char *password) {
+  if (!peer_ptr) {
+    LOG_ERROR("peer_ptr not created");
+    return -1;
+  }
+
   peer_ptr->peer_connection->Join(peer_ptr->pc_params, transmission_id,
                                   password);
   LOG_INFO("JoinConnection[{}] with password [{}]", transmission_id, password);
@@ -48,6 +64,11 @@ int JoinConnection(PeerPtr *peer_ptr, const char *transmission_id,
 }
 
 int LeaveConnection(PeerPtr *peer_ptr) {
+  if (!peer_ptr) {
+    LOG_ERROR("peer_ptr not created");
+    return -1;
+  }
+
   peer_ptr->peer_connection->Leave();
   LOG_INFO("LeaveConnection");
   return 0;
@@ -55,6 +76,11 @@ int LeaveConnection(PeerPtr *peer_ptr) {
 
 int SendData(PeerPtr *peer_ptr, DATA_TYPE data_type, const char *data,
              size_t size) {
+  if (!peer_ptr) {
+    LOG_ERROR("peer_ptr not created");
+    return -1;
+  }
+
   if (DATA_TYPE::VIDEO == data_type) {
     peer_ptr->peer_connection->SendVideoData(data, size);
   } else if (DATA_TYPE::AUDIO == data_type) {
@@ -63,6 +89,4 @@ int SendData(PeerPtr *peer_ptr, DATA_TYPE data_type, const char *data,
     peer_ptr->peer_connection->SendUserData(data, size);
   }
   return 0;
-}
-
-int rtc() { return 0; }
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/rtp/rtp_audio_receiver.cpp b/src/rtp/rtp_audio_receiver.cpp
new file mode 100644
index 0000000..c381173
--- /dev/null
+++ b/src/rtp/rtp_audio_receiver.cpp
@@ -0,0 +1,90 @@
+#include "rtp_audio_receiver.h"
+
+#define RTCP_RR_INTERVAL 1000
+
+RtpAudioReceiver::RtpAudioReceiver() {}
+
+RtpAudioReceiver::~RtpAudioReceiver() {
+  if (rtp_statistics_) {
+    rtp_statistics_->Stop();
+  }
+}
+
+void RtpAudioReceiver::InsertRtpPacket(RtpPacket& rtp_packet) {
+  if (!rtp_statistics_) {
+    rtp_statistics_ = std::make_unique<RtpStatistics>();
+    rtp_statistics_->Start();
+  }
+
+  if (rtp_statistics_) {
+    rtp_statistics_->UpdateReceiveBytes(rtp_packet.Size());
+  }
+
+  if (CheckIsTimeSendRR()) {
+    RtcpReceiverReport rtcp_rr;
+    RtcpReportBlock report;
+
+    auto duration = std::chrono::system_clock::now().time_since_epoch();
+    auto seconds = std::chrono::duration_cast<std::chrono::seconds>(duration);
+    uint32_t seconds_u32 = static_cast<uint32_t>(
+        std::chrono::duration_cast<std::chrono::seconds>(duration).count());
+
+    uint32_t fraction_u32 = static_cast<uint32_t>(
+        std::chrono::duration_cast<std::chrono::nanoseconds>(duration - seconds)
+            .count());
+
+    report.source_ssrc = 0x00;
+    report.fraction_lost = 0;
+    report.cumulative_lost = 0;
+    report.extended_high_seq_num = 0;
+    report.jitter = 0;
+    report.lsr = 0;
+    report.dlsr = 0;
+
+    rtcp_rr.SetReportBlock(report);
+
+    rtcp_rr.Encode();
+
+    // SendRtcpRR(rtcp_rr);
+  }
+
+  if (on_receive_data_) {
+    on_receive_data_((const char*)rtp_packet.Payload(),
+                     rtp_packet.PayloadSize());
+  }
+}
+
+void RtpAudioReceiver::SetSendDataFunc(
+    std::function<int(const char*, size_t)> data_send_func) {
+  data_send_func_ = data_send_func;
+}
+
+int RtpAudioReceiver::SendRtcpRR(RtcpReceiverReport& rtcp_rr) {
+  if (!data_send_func_) {
+    LOG_ERROR("data_send_func_ is nullptr");
+    return -1;
+  }
+
+  if (data_send_func_((const char*)rtcp_rr.Buffer(), rtcp_rr.Size())) {
+    LOG_ERROR("Send RR failed");
+    return -1;
+  }
+
+  // LOG_ERROR("Send RR");
+
+  return 0;
+}
+
+bool RtpAudioReceiver::CheckIsTimeSendRR() {
+  uint32_t now_ts = static_cast<uint32_t>(
+      std::chrono::duration_cast<std::chrono::milliseconds>(
+          std::chrono::high_resolution_clock::now().time_since_epoch())
+          .count());
+
+  if (now_ts - last_send_rtcp_rr_packet_ts_ >= RTCP_RR_INTERVAL) {
+    last_send_rtcp_rr_packet_ts_ = now_ts;
+    return true;
+  } else {
+    return false;
+  }
+}
\ No newline at end of file
diff --git a/src/rtp/rtp_audio_receiver.h b/src/rtp/rtp_audio_receiver.h
new file mode 100644
index 0000000..28afe89
--- /dev/null
+++ b/src/rtp/rtp_audio_receiver.h
@@ -0,0 +1,45 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _RTP_AUDIO_RECEIVER_H_
+#define _RTP_AUDIO_RECEIVER_H_
+
+#include <functional>
+
+#include "rtcp_receiver_report.h"
+#include "rtp_codec.h"
+#include "rtp_statistics.h"
+
+class RtpAudioReceiver {
+ public:
+  RtpAudioReceiver();
+  ~RtpAudioReceiver();
+
+ public:
+  void InsertRtpPacket(RtpPacket& rtp_packet);
+
+  void SetSendDataFunc(std::function<int(const char*, size_t)> data_send_func);
+
+  void SetOnReceiveData(
+      std::function<void(const char*, size_t)> on_receive_data) {
+    on_receive_data_ = on_receive_data;
+  }
+
+ private:
+  bool CheckIsTimeSendRR();
+  int SendRtcpRR(RtcpReceiverReport& rtcp_rr);
+
+ private:
+  std::function<void(const char*, size_t)> on_receive_data_ = nullptr;
+  uint32_t last_complete_frame_ts_ = 0;
+
+ private:
+  std::unique_ptr<RtpStatistics> rtp_statistics_ = nullptr;
+  uint32_t last_send_rtcp_rr_packet_ts_ = 0;
+  std::function<int(const char*, size_t)> data_send_func_ = nullptr;
+};
+
+#endif
\ No newline at end of file
diff --git a/src/rtp/rtp_audio_sender.cpp b/src/rtp/rtp_audio_sender.cpp
new file mode 100644
index 0000000..f90fff7
--- /dev/null
+++ b/src/rtp/rtp_audio_sender.cpp
@@ -0,0 +1,140 @@
+#include "rtp_audio_sender.h"
+
+#include <chrono>
+
+#include "log.h"
+
+#define RTCP_SR_INTERVAL 1000
+
+RtpAudioSender::RtpAudioSender() {}
+
+RtpAudioSender::~RtpAudioSender() {
+  if (rtp_statistics_) {
+    rtp_statistics_->Stop();
+  }
+}
+
+void RtpAudioSender::Enqueue(std::vector<RtpPacket>& rtp_packets) {
+  if (!rtp_statistics_) {
+    rtp_statistics_ = std::make_unique<RtpStatistics>();
+    rtp_statistics_->Start();
+  }
+
+  for (auto& rtp_packet : rtp_packets) {
+    rtp_packe_queue_.push(rtp_packet);
+  }
+}
+
+void RtpAudioSender::SetSendDataFunc(
+    std::function<int(const char*, size_t)> data_send_func) {
+  data_send_func_ = data_send_func;
+}
+
+int RtpAudioSender::SendRtpPacket(RtpPacket& rtp_packet) {
+  if (!data_send_func_) {
+    LOG_ERROR("data_send_func_ is nullptr");
+    return -1;
+  }
+
+  int ret = 0;
+
+  if (0 !=
+      data_send_func_((const char*)rtp_packet.Buffer(), rtp_packet.Size())) {
+    LOG_ERROR("Send rtp packet failed");
+    return -1;
+  }
+
+  last_send_bytes_ += rtp_packet.Size();
+  total_rtp_packets_sent_++;
+  total_rtp_payload_sent_ += rtp_packet.PayloadSize();
+
+  if (CheckIsTimeSendSR()) {
+    RtcpSenderReport rtcp_sr;
+    SenderInfo sender_info;
+    RtcpReportBlock report;
+
+    auto duration = std::chrono::system_clock::now().time_since_epoch();
+    auto seconds = std::chrono::duration_cast<std::chrono::seconds>(duration);
+    uint32_t seconds_u32 = static_cast<uint32_t>(
+        std::chrono::duration_cast<std::chrono::seconds>(duration).count());
+
+    uint32_t fraction_u32 = static_cast<uint32_t>(
+        std::chrono::duration_cast<std::chrono::nanoseconds>(duration - seconds)
+            .count());
+
+    sender_info.sender_ssrc = 0x00;
+    sender_info.ntp_ts_msw = (uint32_t)seconds_u32;
+    sender_info.ntp_ts_lsw = (uint32_t)fraction_u32;
+    sender_info.rtp_ts =
+        std::chrono::high_resolution_clock::now().time_since_epoch().count() *
+        1000000;
+    sender_info.sender_packet_count = total_rtp_packets_sent_;
+    sender_info.sender_octet_count = total_rtp_payload_sent_;
+
+    rtcp_sr.SetSenderInfo(sender_info);
+
+    report.source_ssrc = 0x00;
+    report.fraction_lost = 0;
+    report.cumulative_lost = 0;
+    report.extended_high_seq_num = 0;
+    report.jitter = 0;
+    report.lsr = 0;
+    report.dlsr = 0;
+
+    rtcp_sr.SetReportBlock(report);
+
+    rtcp_sr.Encode();
+
+    SendRtcpSR(rtcp_sr);
+  }
+
+  return 0;
+}
+
+int RtpAudioSender::SendRtcpSR(RtcpSenderReport& rtcp_sr) {
+  if (!data_send_func_) {
+    LOG_ERROR("data_send_func_ is nullptr");
+    return -1;
+  }
+
+  if (data_send_func_((const char*)rtcp_sr.Buffer(), rtcp_sr.Size())) {
+    LOG_ERROR("Send SR failed");
+    return -1;
+  }
+
+  // LOG_ERROR("Send SR");
+
+  return 0;
+}
+
+bool RtpAudioSender::CheckIsTimeSendSR() {
+  uint32_t now_ts = static_cast<uint32_t>(
+      std::chrono::duration_cast<std::chrono::milliseconds>(
+          std::chrono::high_resolution_clock::now().time_since_epoch())
+          .count());
+
+  if (now_ts - last_send_rtcp_sr_packet_ts_ >= RTCP_SR_INTERVAL) {
+    last_send_rtcp_sr_packet_ts_ = now_ts;
+    return true;
+  } else {
+    return false;
+  }
+}
+
+bool RtpAudioSender::Process() {
+  last_send_bytes_ = 0;
+
+  for (size_t i = 0; i < 10; i++)
+    if (!rtp_packe_queue_.isEmpty()) {
+      RtpPacket rtp_packet;
+      rtp_packe_queue_.pop(rtp_packet);
+      SendRtpPacket(rtp_packet);
+    }
+
+  if (rtp_statistics_) {
+    rtp_statistics_->UpdateSentBytes(last_send_bytes_);
+  }
+
+  std::this_thread::sleep_for(std::chrono::milliseconds(5));
+  return true;
+}
\ No newline at end of file
diff --git a/src/rtp/rtp_audio_sender.h b/src/rtp/rtp_audio_sender.h
new file mode 100644
index 0000000..8a7a841
--- /dev/null
+++ b/src/rtp/rtp_audio_sender.h
@@ -0,0 +1,47 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _RTP_AUDIO_SENDER_H_
+#define _RTP_AUDIO_SENDER_H_
+
+#include <functional>
+
+#include "ringbuffer.h"
+#include "rtcp_sender_report.h"
+#include "rtp_packet.h"
+#include "rtp_statistics.h"
+#include "thread_base.h"
+
+class RtpAudioSender : public ThreadBase {
+ public:
+  RtpAudioSender();
+  ~RtpAudioSender();
+
+ public:
+  void Enqueue(std::vector<RtpPacket> &rtp_packets);
+  void SetSendDataFunc(std::function<int(const char *, size_t)> data_send_func);
+
+ private:
+ private:
+  int SendRtpPacket(RtpPacket &rtp_packet);
+  int SendRtcpSR(RtcpSenderReport &rtcp_sr);
+
+  bool CheckIsTimeSendSR();
+
+ private:
+  bool Process() override;
+
+ private:
+  std::function<int(const char *, size_t)> data_send_func_ = nullptr;
+  RingBuffer<RtpPacket> rtp_packe_queue_;
+  std::unique_ptr<RtpStatistics> rtp_statistics_ = nullptr;
+  uint32_t last_send_bytes_ = 0;
+  uint32_t last_send_rtcp_sr_packet_ts_ = 0;
+  uint32_t total_rtp_packets_sent_ = 0;
+  uint32_t total_rtp_payload_sent_ = 0;
+};
+
+#endif
\ No newline at end of file
diff --git a/src/rtp/rtp_codec.cpp b/src/rtp/rtp_codec.cpp
index 0e6ffe5..e759bfb 100644
--- a/src/rtp/rtp_codec.cpp
+++ b/src/rtp/rtp_codec.cpp
@@ -216,6 +216,22 @@ void RtpCodec::Encode(uint8_t* buffer, size_t size,
         packets.emplace_back(rtp_packet);
       }
     }
+  } else if (RtpPacket::PAYLOAD_TYPE::OPUS == payload_type_) {
+    RtpPacket rtp_packet;
+    rtp_packet.SetVerion(version_);
+    rtp_packet.SetHasPadding(has_padding_);
+    rtp_packet.SetHasExtension(has_extension_);
+    rtp_packet.SetMarker(1);
+    rtp_packet.SetPayloadType(RtpPacket::PAYLOAD_TYPE(payload_type_));
+    rtp_packet.SetSequenceNumber(sequence_number_++);
+
+    timestamp_ =
+        std::chrono::high_resolution_clock::now().time_since_epoch().count();
+    rtp_packet.SetTimestamp(timestamp_);
+    rtp_packet.SetSsrc(ssrc_);
+
+    rtp_packet.Encode(buffer, size);
+    packets.emplace_back(rtp_packet);
   } else if (RtpPacket::PAYLOAD_TYPE::DATA == payload_type_) {
     RtpPacket rtp_packet;
     rtp_packet.SetVerion(version_);
diff --git a/src/rtp/rtp_data_sender.h b/src/rtp/rtp_data_sender.h
index 5ab4d7e..53cc0b8 100644
--- a/src/rtp/rtp_data_sender.h
+++ b/src/rtp/rtp_data_sender.h
@@ -1,3 +1,9 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
 #ifndef _RTP_DATA_SENDER_H_
 #define _RTP_DATA_SENDER_H_
 
diff --git a/src/rtp/rtp_packet.cpp b/src/rtp/rtp_packet.cpp
index 6d9d4f8..ceba633 100644
--- a/src/rtp/rtp_packet.cpp
+++ b/src/rtp/rtp_packet.cpp
@@ -17,6 +17,8 @@ void RtpPacket::TryToDecodeRtpPacket() {
     DecodeH264FecSource();
   } else if (PAYLOAD_TYPE::H264_FEC_REPAIR == PAYLOAD_TYPE(buffer_[1] & 0x7F)) {
     DecodeH264FecRepair();
+  } else if (PAYLOAD_TYPE::OPUS == PAYLOAD_TYPE(buffer_[1] & 0x7F)) {
+    DecodeOpus();
   } else if (PAYLOAD_TYPE::DATA == PAYLOAD_TYPE(buffer_[1] & 0x7F)) {
     DecodeData();
   } else {
@@ -368,6 +370,50 @@ const uint8_t *RtpPacket::EncodeH264FecRepair(
   return buffer_;
 }
 
+size_t RtpPacket::DecodeOpus(uint8_t *payload) {
+  version_ = (buffer_[0] >> 6) & 0x03;
+  has_padding_ = (buffer_[0] >> 5) & 0x01;
+  has_extension_ = (buffer_[0] >> 4) & 0x01;
+  total_csrc_number_ = buffer_[0] & 0x0f;
+  marker_ = (buffer_[1] >> 7) & 0x01;
+  payload_type_ = buffer_[1] & 0x7f;
+  sequence_number_ = (buffer_[2] << 8) | buffer_[3];
+  timestamp_ =
+      (buffer_[4] << 24) | (buffer_[5] << 16) | (buffer_[6] << 8) | buffer_[7];
+  ssrc_ = (buffer_[8] << 24) | (buffer_[9] << 16) | (buffer_[10] << 8) |
+          buffer_[11];
+
+  for (uint32_t index = 0; index < total_csrc_number_; index++) {
+    uint32_t csrc = (buffer_[12 + index] << 24) | (buffer_[13 + index] << 16) |
+                    (buffer_[14 + index] << 8) | buffer_[15 + index];
+    csrcs_.push_back(csrc);
+  }
+
+  uint32_t extension_offset = total_csrc_number_ * 4;
+  if (has_extension_) {
+    extension_profile_ =
+        (buffer_[12 + extension_offset] << 8) | buffer_[13 + extension_offset];
+    extension_len_ =
+        (buffer_[14 + extension_offset] << 8) | buffer_[15 + extension_offset];
+
+    // extension_data_ = new uint8_t[extension_len_];
+    // memcpy(extension_data_, buffer_ + 16 + extension_offset,
+    // extension_len_);
+    extension_data_ = buffer_ + 16 + extension_offset;
+  }
+
+  uint32_t payload_offset =
+      (has_extension_ ? extension_len_ : 0) + extension_offset;
+
+  payload_size_ = size_ - (12 + payload_offset);
+  payload_ = buffer_ + 12 + payload_offset;
+  if (payload) {
+    memcpy(payload, payload_, payload_size_);
+  }
+
+  return payload_size_;
+}
+
 size_t RtpPacket::DecodeData(uint8_t *payload) {
   version_ = (buffer_[0] >> 6) & 0x03;
   has_padding_ = (buffer_[0] >> 5) & 0x01;
diff --git a/src/rtp/rtp_packet.h b/src/rtp/rtp_packet.h
index cf85f1a..d9e8eb6 100644
--- a/src/rtp/rtp_packet.h
+++ b/src/rtp/rtp_packet.h
@@ -209,6 +209,7 @@ class RtpPacket {
   size_t DecodeH264Fua(uint8_t *payload = nullptr);
   size_t DecodeH264FecSource(uint8_t *payload = nullptr);
   size_t DecodeH264FecRepair(uint8_t *payload = nullptr);
+  size_t DecodeOpus(uint8_t *payload = nullptr);
 
  public:
   // Get Header
diff --git a/src/rtp/rtp_video_receiver.h b/src/rtp/rtp_video_receiver.h
index c6cae4f..36bb4b6 100644
--- a/src/rtp/rtp_video_receiver.h
+++ b/src/rtp/rtp_video_receiver.h
@@ -7,12 +7,12 @@
 #include <set>
 
 #include "fec_decoder.h"
-#include "frame.h"
 #include "ringbuffer.h"
 #include "rtcp_receiver_report.h"
 #include "rtp_codec.h"
 #include "rtp_statistics.h"
 #include "thread_base.h"
+#include "video_frame.h"
 
 class RtpVideoReceiver : public ThreadBase {
  public:
diff --git a/src/thread/thread_base.cpp b/src/thread/thread_base.cpp
index b304d59..47c8cc9 100644
--- a/src/thread/thread_base.cpp
+++ b/src/thread/thread_base.cpp
@@ -4,7 +4,7 @@
 
 ThreadBase::ThreadBase() {}
 
-ThreadBase::~ThreadBase() {}
+ThreadBase::~ThreadBase() { Stop(); }
 
 void ThreadBase::Start() {
   if (!thread_) {
diff --git a/src/transmission/ice_transmission.cpp b/src/transmission/ice_transmission.cpp
index 1b0e74d..4fd22e3 100644
--- a/src/transmission/ice_transmission.cpp
+++ b/src/transmission/ice_transmission.cpp
@@ -28,8 +28,8 @@ IceTransmission::~IceTransmission() {
     rtp_video_sender_->Stop();
   }
 
-  if (rtp_video_receiver_) {
-    rtp_video_receiver_->Stop();
+  if (rtp_audio_sender_) {
+    rtp_audio_sender_->Stop();
   }
 
   if (rtp_data_sender_) {
@@ -47,6 +47,7 @@ int IceTransmission::InitIceTransmission(std::string &stun_ip, int stun_port,
                                          std::string &turn_username,
                                          std::string &turn_password) {
   video_rtp_codec_ = std::make_unique<RtpCodec>(RtpPacket::PAYLOAD_TYPE::H264);
+  audio_rtp_codec_ = std::make_unique<RtpCodec>(RtpPacket::PAYLOAD_TYPE::OPUS);
   data_rtp_codec_ = std::make_unique<RtpCodec>(RtpPacket::PAYLOAD_TYPE::DATA);
 
   rtp_video_receiver_ = std::make_unique<RtpVideoReceiver>();
@@ -82,6 +83,26 @@ int IceTransmission::InitIceTransmission(std::string &stun_ip, int stun_port,
 
   rtp_video_sender_->Start();
 
+  rtp_audio_receiver_ = std::make_unique<RtpAudioReceiver>();
+  rtp_audio_receiver_->SetOnReceiveData(
+      [this](const char *data, size_t size) -> void {
+        on_receive_audio_(data, size, remote_user_id_.data(),
+                          remote_user_id_.size());
+      });
+
+  rtp_audio_sender_ = std::make_unique<RtpAudioSender>();
+  rtp_audio_sender_->SetSendDataFunc(
+      [this](const char *data, size_t size) -> int {
+        if (!ice_agent_) {
+          LOG_ERROR("ice_agent_ is nullptr");
+          return -1;
+        }
+
+        return ice_agent_->Send(data, size);
+      });
+
+  rtp_audio_sender_->Start();
+
   rtp_data_sender_ = std::make_unique<RtpDataSender>();
   rtp_data_sender_->SetSendDataFunc(
       [this](const char *data, size_t size) -> int {
@@ -160,6 +181,10 @@ int IceTransmission::InitIceTransmission(std::string &stun_ip, int stun_port,
               RtpPacket packet((uint8_t *)buffer, size);
               ice_transmission_obj->rtp_video_receiver_->InsertRtpPacket(
                   packet);
+            } else if (ice_transmission_obj->CheckIsAudioPacket(buffer, size)) {
+              RtpPacket packet((uint8_t *)buffer, size);
+              ice_transmission_obj->rtp_audio_receiver_->InsertRtpPacket(
+                  packet);
             } else if (ice_transmission_obj->CheckIsDataPacket(buffer, size)) {
               RtpPacket packet((uint8_t *)buffer, size);
               ice_transmission_obj->rtp_data_receiver_->InsertRtpPacket(packet);
@@ -269,6 +294,12 @@ int IceTransmission::SendData(DATA_TYPE type, const char *data, size_t size) {
         rtp_video_sender_->Enqueue(packets);
       }
     } else if (DATA_TYPE::AUDIO == type) {
+      if (rtp_audio_sender_) {
+        if (audio_rtp_codec_) {
+          audio_rtp_codec_->Encode((uint8_t *)data, size, packets);
+          rtp_audio_sender_->Enqueue(packets);
+        }
+      }
     } else if (DATA_TYPE::DATA == type) {
       if (rtp_data_sender_) {
         if (data_rtp_codec_) {
diff --git a/src/transmission/ice_transmission.h b/src/transmission/ice_transmission.h
index f062dfb..df24915 100644
--- a/src/transmission/ice_transmission.h
+++ b/src/transmission/ice_transmission.h
@@ -1,3 +1,9 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2023-11-24
+ * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ */
+
 #ifndef _ICE_TRANSMISSION_H_
 #define _ICE_TRANSMISSION_H_
 
@@ -6,6 +12,8 @@
 #include "congestion_control.h"
 #include "ice_agent.h"
 #include "ringbuffer.h"
+#include "rtp_audio_receiver.h"
+#include "rtp_audio_sender.h"
 #include "rtp_codec.h"
 #include "rtp_data_receiver.h"
 #include "rtp_data_sender.h"
@@ -107,6 +115,8 @@ class IceTransmission {
   std::unique_ptr<RtpCodec> data_rtp_codec_ = nullptr;
   std::unique_ptr<RtpVideoReceiver> rtp_video_receiver_ = nullptr;
   std::unique_ptr<RtpVideoSender> rtp_video_sender_ = nullptr;
+  std::unique_ptr<RtpAudioReceiver> rtp_audio_receiver_ = nullptr;
+  std::unique_ptr<RtpAudioSender> rtp_audio_sender_ = nullptr;
   std::unique_ptr<RtpDataReceiver> rtp_data_receiver_ = nullptr;
   std::unique_ptr<RtpDataSender> rtp_data_sender_ = nullptr;
   uint8_t *rtp_payload_ = nullptr;
diff --git a/src/ws/ws_core.cpp b/src/ws/ws_core.cpp
index ac7faf6..5fb5594 100644
--- a/src/ws/ws_core.cpp
+++ b/src/ws/ws_core.cpp
@@ -20,7 +20,7 @@ WsCore::WsCore() {
 WsCore::~WsCore() {
   m_endpoint_.stop_perpetual();
 
-  if (GetStatus() != "Open") {
+  if (GetStatus() != WsStatus::WsOpened) {
     // Only close open connections
     return;
   }
@@ -42,6 +42,8 @@ WsCore::~WsCore() {
 }
 
 int WsCore::Connect(std::string const &uri) {
+  uri_ = uri;
+
   websocketpp::lib::error_code ec;
 
   client::connection_ptr con = m_endpoint_.get_connection(uri, ec);
@@ -81,6 +83,9 @@ int WsCore::Connect(std::string const &uri) {
 
   m_endpoint_.connect(con);
 
+  ws_status_ = WsStatus::WsOpening;
+  OnWsStatus(WsStatus::WsOpening);
+
   return 0;
 }
 
@@ -118,21 +123,26 @@ void WsCore::Ping(websocketpp::connection_hdl hdl) {
   }
 }
 
-const std::string &WsCore::GetStatus() { return connection_status_; }
+WsStatus WsCore::GetStatus() { return ws_status_; }
 
 void WsCore::OnOpen(client *c, websocketpp::connection_hdl hdl) {
-  connection_status_ = "Open";
+  ws_status_ = WsStatus::WsOpened;
+  OnWsStatus(WsStatus::WsOpened);
 
   ping_thread_ = websocketpp::lib::make_shared<websocketpp::lib::thread>(
       &WsCore::Ping, this, hdl);
 }
 
 void WsCore::OnFail(client *c, websocketpp::connection_hdl hdl) {
-  connection_status_ = "Failed";
+  ws_status_ = WsStatus::WsFailed;
+  OnWsStatus(WsStatus::WsFailed);
+
+  Connect(uri_);
 }
 
 void WsCore::OnClose(client *c, websocketpp::connection_hdl hdl) {
-  connection_status_ = "Closed";
+  ws_status_ = WsStatus::WsClosed;
+  OnWsStatus(WsStatus::WsClosed);
 }
 
 bool WsCore::OnPing(websocketpp::connection_hdl hdl, std::string msg) {
@@ -152,6 +162,8 @@ void WsCore::OnPongTimeout(websocketpp::connection_hdl hdl, std::string msg) {
   LOG_WARN("Pong timeout, reset connection");
   // m_endpoint_.close(hdl, websocketpp::close::status::normal,
   // "OnPongTimeout");
+  ws_status_ = WsStatus::WsReconnecting;
+  OnWsStatus(WsStatus::WsReconnecting);
   m_endpoint_.reset();
 }
 
diff --git a/src/ws/ws_core.h b/src/ws/ws_core.h
index 6373467..0d08ad8 100644
--- a/src/ws/ws_core.h
+++ b/src/ws/ws_core.h
@@ -13,6 +13,8 @@
 
 typedef websocketpp::client<websocketpp::config::asio_client> client;
 
+enum WsStatus { WsOpening = 0, WsOpened, WsFailed, WsClosed, WsReconnecting };
+
 class WsCore {
  public:
   WsCore();
@@ -27,7 +29,7 @@ class WsCore {
 
   void Ping(websocketpp::connection_hdl hdl);
 
-  const std::string &GetStatus();
+  WsStatus GetStatus();
 
   // Callback
   void OnOpen(client *c, websocketpp::connection_hdl hdl);
@@ -46,14 +48,17 @@ class WsCore {
 
   virtual void OnReceiveMessage(const std::string &msg) = 0;
 
+  virtual void OnWsStatus(WsStatus ws_status) = 0;
+
  private:
   client m_endpoint_;
   websocketpp::connection_hdl connection_handle_;
   websocketpp::lib::shared_ptr<websocketpp::lib::thread> m_thread_;
   websocketpp::lib::shared_ptr<websocketpp::lib::thread> ping_thread_;
 
-  std::string connection_status_ = "Connecting";
+  WsStatus ws_status_ = WsStatus::WsClosed;
   int timeout_count_ = 0;
+  std::string uri_;
 };
 
 #endif
\ No newline at end of file
diff --git a/src/ws/ws_transmission.cpp b/src/ws/ws_transmission.cpp
index c582794..cb32c7b 100644
--- a/src/ws/ws_transmission.cpp
+++ b/src/ws/ws_transmission.cpp
@@ -3,8 +3,9 @@
 #include "log.h"
 
 WsTransmission::WsTransmission(
-    std::function<void(const std::string &)> on_receive_msg_cb)
-    : on_receive_msg_(on_receive_msg_cb) {}
+    std::function<void(const std::string &)> on_receive_msg_cb,
+    std::function<void(WsStatus)> on_ws_status_cb)
+    : on_receive_msg_(on_receive_msg_cb), on_ws_status_(on_ws_status_cb) {}
 
 WsTransmission::~WsTransmission() {}
 
@@ -13,4 +14,11 @@ void WsTransmission::OnReceiveMessage(const std::string &msg) {
   if (on_receive_msg_) {
     on_receive_msg_(msg);
   }
+}
+
+void WsTransmission::OnWsStatus(WsStatus ws_status) {
+  // LOG_INFO("Receive msg: {}", msg);
+  if (on_ws_status_) {
+    on_ws_status_(ws_status);
+  }
 }
\ No newline at end of file
diff --git a/src/ws/ws_transmission.h b/src/ws/ws_transmission.h
index a527087..5a9a6f7 100644
--- a/src/ws/ws_transmission.h
+++ b/src/ws/ws_transmission.h
@@ -5,14 +5,18 @@
 
 class WsTransmission : public WsCore {
  public:
-  WsTransmission(std::function<void(const std::string &)> on_receive_msg_cb);
+  WsTransmission(std::function<void(const std::string &)> on_receive_msg_cb,
+                 std::function<void(WsStatus)> on_ws_status_cb);
   ~WsTransmission();
 
  public:
   void OnReceiveMessage(const std::string &msg);
 
+  void OnWsStatus(WsStatus ws_status);
+
  private:
   std::function<void(const std::string &)> on_receive_msg_ = nullptr;
+  std::function<void(WsStatus)> on_ws_status_ = nullptr;
 };
 
 #endif
\ No newline at end of file
diff --git a/tests/opus/OpusDecoderImpl.cpp b/tests/opus/OpusDecoderImpl.cpp
index 31e4f3e..4be9690 100644
--- a/tests/opus/OpusDecoderImpl.cpp
+++ b/tests/opus/OpusDecoderImpl.cpp
@@ -1,6 +1,6 @@
 #include "OpusDecoderImpl.h"
-#define MAX_FRAME_SIZE 6 * 960
-#define CHANNELS 2
+#define MAX_FRAME_SIZE 960
+#define CHANNELS 1
 
 OpusDecoderImpl::OpusDecoderImpl(int sampleRate, int channel) {
   int err;
@@ -9,7 +9,7 @@ OpusDecoderImpl::OpusDecoderImpl(int sampleRate, int channel) {
   sample_rate = sample_rate;
   channel_num = channel;
   if (err < 0 || decoder == NULL) {
-    printf("创建解码器失败\n");
+    printf("Create opus decoder failed\n");
     return;
   }
 
@@ -22,7 +22,7 @@ bool OpusDecoderImpl::Decode(unsigned char* in_data, int len) {
   auto frame_size = opus_decode(decoder, in_data, len, out, MAX_FRAME_SIZE, 0);
 
   if (frame_size < 0) {
-    printf("解码失败\n");
+    printf("Invalid frame size\n");
     return false;
   }
 
diff --git a/tests/opus/OpusEncoderImpl.cpp b/tests/opus/OpusEncoderImpl.cpp
index bb835e9..b0240b5 100644
--- a/tests/opus/OpusEncoderImpl.cpp
+++ b/tests/opus/OpusEncoderImpl.cpp
@@ -22,7 +22,7 @@ OpusEncoderImpl::OpusEncoderImpl(int sampleRate, int channel)
 
   opus_encoder_ctl(encoder, OPUS_SET_VBR(0));  // 0:CBR, 1:VBR
   opus_encoder_ctl(encoder, OPUS_SET_VBR_CONSTRAINT(true));
-  opus_encoder_ctl(encoder, OPUS_SET_BITRATE(96000));
+  opus_encoder_ctl(encoder, OPUS_SET_BITRATE(sample_rate * channel_num));
   opus_encoder_ctl(encoder, OPUS_SET_COMPLEXITY(8));  // 8    0~10
   opus_encoder_ctl(encoder, OPUS_SET_SIGNAL(OPUS_SIGNAL_VOICE));
   opus_encoder_ctl(encoder,
@@ -57,13 +57,13 @@ bool OpusEncoderImpl::PopFrame(StreamInfo &info) {
 // 48000 sample rate，48 samples/ms * 20ms * 2 channel = 1920
 void OpusEncoderImpl::EncodeRun() {
   m_thread = std::make_unique<std::thread>([this]() {
-    const int frame_size = 48 * 20;  // 960
-    const int input_len = sizeof(opus_int16) * frame_size * 2;
+    const int frame_size = 48 * 20;  // 1920
+    int input_len = sizeof(opus_int16) * frame_size * channel_num;
 
-    OpusDecoderImpl decoder(48000, channel_num);
+    OpusDecoderImpl decoder(sample_rate, channel_num);
 
-    opus_int16 input_data[frame_size * 2] = {0};
-    unsigned char input_buffer[input_len] = {0};
+    opus_int16 input_data[frame_size] = {0};
+    unsigned char *input_buffer = new unsigned char[input_len];
     unsigned char out_data[MAX_PACKET_SIZE] = {0};
 
     while (isRuning) {
@@ -99,6 +99,8 @@ void OpusEncoderImpl::EncodeRun() {
         std::this_thread::sleep_for(std::chrono::milliseconds(1));
       }
     }
+
+    free(input_buffer);
   });
 }
 
diff --git a/tests/opus/OpusEncoderImpl.h b/tests/opus/OpusEncoderImpl.h
index 61732f6..baafe9d 100644
--- a/tests/opus/OpusEncoderImpl.h
+++ b/tests/opus/OpusEncoderImpl.h
@@ -6,6 +6,7 @@
 #include <thread>
 #include <vector>
 
+#include "OpusDecoderImpl.h"
 #include "base_type.h"
 #include "opus/opus.h"
 
@@ -21,6 +22,8 @@ class OpusEncoderImpl {
   std::mutex access_mutex;
   std::unique_ptr<std::thread> m_thread;
 
+  OpusDecoderImpl *decoder = nullptr;
+
  public:
   OpusEncoderImpl(int sampleRate, int channel);
   void Feed(unsigned char *data, int len);
diff --git a/tests/opus/main.cpp b/tests/opus/main.cpp
index 2703e6a..4decc82 100644
--- a/tests/opus/main.cpp
+++ b/tests/opus/main.cpp
@@ -1,3 +1,20 @@
+#include <SDL2/SDL.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+extern "C" {
+#include <libavcodec/avcodec.h>
+#include <libavdevice/avdevice.h>
+#include <libavfilter/avfilter.h>
+#include <libavformat/avformat.h>
+#include <libavutil/channel_layout.h>
+#include <libavutil/imgutils.h>
+#include <libavutil/opt.h>
+#include <libavutil/samplefmt.h>
+#include <libswresample/swresample.h>
+#include <libswscale/swscale.h>
+};
+
 #include <fstream>
 #include <iostream>
 #include <vector>
@@ -5,27 +22,197 @@
 #include "OpusEncoderImpl.h"
 #include "opus/opus.h"
 
-int main() {
-  OpusEncoderImpl* opusEncoder = new OpusEncoderImpl(48000, 2);
+static SDL_AudioDeviceID input_dev;
+static SDL_AudioDeviceID output_dev;
 
-  std::ifstream inputFile("ls.pcm", std::ios::binary);
-  if (!inputFile) {
-    std::cerr << "Failed to open input file." << std::endl;
+static Uint8 *buffer = 0;
+static int in_pos = 0;
+static int out_pos = 0;
+
+char *out = "audio_old.pcm";
+FILE *outfile = fopen(out, "wb+");
+
+static OpusEncoderImpl *opusEncoder = nullptr;
+
+int64_t src_ch_layout = AV_CH_LAYOUT_MONO;
+int src_rate = 48000;
+enum AVSampleFormat src_sample_fmt = AV_SAMPLE_FMT_FLT;
+int src_nb_channels = 0;
+uint8_t **src_data = NULL;  // 二级指针
+int src_linesize;
+int src_nb_samples = 480;
+
+// 输出参数
+int64_t dst_ch_layout = AV_CH_LAYOUT_STEREO;
+int dst_rate = 48000;
+enum AVSampleFormat dst_sample_fmt = AV_SAMPLE_FMT_S16;
+int dst_nb_channels = 0;
+uint8_t **dst_data = NULL;  // 二级指针
+int dst_linesize;
+int dst_nb_samples;
+int max_dst_nb_samples;
+
+// 输出文件
+const char *dst_filename = NULL;  // 保存输出的pcm到本地，然后播放验证
+FILE *dst_file;
+
+int dst_bufsize;
+const char *fmt;
+
+// 重采样实例
+struct SwrContext *swr_ctx;
+
+double t;
+int ret;
+
+void cb_in(void *userdata, Uint8 *stream, int len) {
+  // If len < 4, the printf below will probably segfault
+  {
+    fwrite(stream, 1, len, outfile);
+    fflush(outfile);
+  }
+  {
+    int64_t delay = swr_get_delay(swr_ctx, src_rate);
+    dst_nb_samples =
+        av_rescale_rnd(delay + src_nb_samples, dst_rate, src_rate, AV_ROUND_UP);
+    if (dst_nb_samples > max_dst_nb_samples) {
+      av_freep(&dst_data[0]);
+      ret = av_samples_alloc(dst_data, &dst_linesize, dst_nb_channels,
+                             dst_nb_samples, dst_sample_fmt, 1);
+      if (ret < 0) return;
+      max_dst_nb_samples = dst_nb_samples;
+    }
+
+    ret = swr_convert(swr_ctx, dst_data, dst_nb_samples,
+                      (const uint8_t **)&stream, src_nb_samples);
+    if (ret < 0) {
+      fprintf(stderr, "Error while converting\n");
+      return;
+    }
+    dst_bufsize = av_samples_get_buffer_size(&dst_linesize, dst_nb_channels,
+                                             ret, dst_sample_fmt, 1);
+    if (dst_bufsize < 0) {
+      fprintf(stderr, "Could not get sample buffer size\n");
+      return;
+    }
+    printf("t:%f in:%d out:%d\n", t, src_nb_samples, ret);
+    fwrite(dst_data[0], 1, dst_bufsize, dst_file);
+    opusEncoder->Feed(dst_data[0], dst_bufsize);
+  }
+}
+
+void cb_out(void *userdata, Uint8 *stream, int len) {
+  // If len < 4, the printf below will probably segfault
+
+  SDL_memcpy(buffer + out_pos, stream, len);
+  out_pos += len;
+}
+
+int init() {
+  dst_filename = "res.pcm";
+
+  dst_file = fopen(dst_filename, "wb");
+  if (!dst_file) {
+    fprintf(stderr, "Could not open destination file %s\n", dst_filename);
+    exit(1);
+  }
+
+  // 创建重采样器
+  /* create resampler context */
+  swr_ctx = swr_alloc();
+  if (!swr_ctx) {
+    fprintf(stderr, "Could not allocate resampler context\n");
+    ret = AVERROR(ENOMEM);
     return -1;
   }
 
-  char sample[960];
-  while (inputFile.read(sample, 960)) {
-    opusEncoder->Feed((unsigned char*)sample, 960);
+  // 设置重采样参数
+  /* set options */
+  // 输入参数
+  av_opt_set_int(swr_ctx, "in_channel_layout", src_ch_layout, 0);
+  av_opt_set_int(swr_ctx, "in_sample_rate", src_rate, 0);
+  av_opt_set_sample_fmt(swr_ctx, "in_sample_fmt", src_sample_fmt, 0);
+  // 输出参数
+  av_opt_set_int(swr_ctx, "out_channel_layout", dst_ch_layout, 0);
+  av_opt_set_int(swr_ctx, "out_sample_rate", dst_rate, 0);
+  av_opt_set_sample_fmt(swr_ctx, "out_sample_fmt", dst_sample_fmt, 0);
+
+  // 初始化重采样
+  /* initialize the resampling context */
+  if ((ret = swr_init(swr_ctx)) < 0) {
+    fprintf(stderr, "Failed to initialize the resampling context\n");
+    return -1;
   }
 
-  // // 读取编码后的opus，一般放在单独线程，这里只是为了方便
-  // StreamInfo info;
-  // while (opusEncoder.PopFrame(info)) {
-  //   .....
-  // }
+  /* allocate source and destination samples buffers */
+  // 计算出输入源的通道数量
+  src_nb_channels = av_get_channel_layout_nb_channels(src_ch_layout);
+  // 给输入源分配内存空间
+  ret = av_samples_alloc_array_and_samples(&src_data, &src_linesize,
+                                           src_nb_channels, src_nb_samples,
+                                           src_sample_fmt, 0);
+  if (ret < 0) {
+    fprintf(stderr, "Could not allocate source samples\n");
+    return -1;
+  }
+
+  /* compute the number of converted samples: buffering is avoided
+   * ensuring that the output buffer will contain at least all the
+   * converted input samples */
+  // 计算输出采样数量
+  max_dst_nb_samples = dst_nb_samples =
+      av_rescale_rnd(src_nb_samples, dst_rate, src_rate, AV_ROUND_UP);
+
+  /* buffer is going to be directly written to a rawaudio file, no alignment */
+  dst_nb_channels = av_get_channel_layout_nb_channels(dst_ch_layout);
+  // 分配输出缓存内存
+  ret = av_samples_alloc_array_and_samples(&dst_data, &dst_linesize,
+                                           dst_nb_channels, dst_nb_samples,
+                                           dst_sample_fmt, 0);
+  if (ret < 0) {
+    fprintf(stderr, "Could not allocate destination samples\n");
+    return -1;
+  }
+}
+
+int main() {
+  init();
+
+  SDL_Init(SDL_INIT_AUDIO);
+
+  // 16Mb should be enough; the test lasts 5 seconds
+  buffer = (Uint8 *)malloc(16777215);
+
+  SDL_AudioSpec want_in, want_out, have_in, have_out;
+
+  SDL_zero(want_in);
+  want_in.freq = 48000;
+  want_in.format = AUDIO_F32LSB;
+  want_in.channels = 2;
+  want_in.samples = 960;
+  want_in.callback = cb_in;
+
+  input_dev = SDL_OpenAudioDevice(NULL, 1, &want_in, &have_in,
+                                  SDL_AUDIO_ALLOW_ANY_CHANGE);
+
+  printf("%d %d %d %d\n", have_in.freq, have_in.format, have_in.channels,
+         have_in.samples);
+  if (input_dev == 0) {
+    SDL_Log("Failed to open input: %s", SDL_GetError());
+    return 1;
+  }
+
+  SDL_PauseAudioDevice(input_dev, 0);
+  SDL_PauseAudioDevice(output_dev, 0);
+
+  opusEncoder = new OpusEncoderImpl(have_in.freq, have_in.channels);
+
+  SDL_Delay(5000);
 
   opusEncoder->Stop();
+  SDL_CloseAudioDevice(output_dev);
+  SDL_CloseAudioDevice(input_dev);
+  free(buffer);
 
-  return 0;
-}
\ No newline at end of file
+  fclose(outfile);
+}
diff --git a/tests/opus/opus_test.cpp b/tests/opus/opus_test.cpp
deleted file mode 100644
index ce9dde2..0000000
--- a/tests/opus/opus_test.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-#include <fstream>
-#include <iostream>
-#include <vector>
-
-// Opus编码函数
-#include <opus/opus.h>
-
-#include <iostream>
-#include <vector>
-
-#define SAMPLE_RATE 48000
-#define CHANNELS 2
-#define FRAME_SIZE 960
-#define APPLICATION OPUS_APPLICATION_AUDIO
-
-// 编码函数
-int encode(const std::vector<opus_int16>& pcm,
-           std::vector<unsigned char>& opus) {
-  // 创建编码器
-  int error;
-  OpusEncoder* encoder =
-      opus_encoder_create(SAMPLE_RATE, CHANNELS, APPLICATION, &error);
-  if (error != OPUS_OK) {
-    std::cerr << "Failed to create encoder: " << opus_strerror(error)
-              << std::endl;
-    return error;
-  }
-
-  // 设置编码器参数
-  opus_encoder_ctl(encoder, OPUS_SET_BITRATE(64000));
-
-  // 计算最大输出大小
-  int maxOpusSize = FRAME_SIZE * CHANNELS * sizeof(opus_int16);
-  opus.resize(maxOpusSize);
-
-  // 编码
-  int encodedSize =
-      opus_encode(encoder, pcm.data(), FRAME_SIZE, opus.data(), maxOpusSize);
-  if (encodedSize < 0) {
-    std::cerr << "Encoding error: " << opus_strerror(encodedSize) << std::endl;
-    return encodedSize;
-  }
-
-  // 清理资源
-  opus_encoder_destroy(encoder);
-
-  // 调整输出向量的大小
-  opus.resize(encodedSize);
-
-  return 0;
-}
-
-int main(int argc, char** argv) {
-  if (argc != 3) {
-    std::cerr << "Usage: " << argv[0] << " input.pcm output.opus" << std::endl;
-    return -1;
-  }
-
-  // 打开输入文件
-  std::ifstream inputFile(argv[1], std::ios::binary);
-  if (!inputFile) {
-    std::cerr << "Failed to open input file." << std::endl;
-    return -1;
-  }
-
-  // 读取PCM数据
-  std::vector<opus_int16> pcmData;
-  opus_int16 sample;
-  while (inputFile.read(reinterpret_cast<char*>(&sample), sizeof(opus_int16))) {
-    pcmData.push_back(sample);
-  }
-
-  // 编码为Opus格式
-  std::vector<unsigned char> opusData;
-  int result = encode(pcmData, opusData);
-  if (result != 0) {
-    std::cerr << "Encoding failed with error code " << result << std::endl;
-    return result;
-  }
-
-  // 打开输出文件
-  std::ofstream outputFile(argv[2], std::ios::binary);
-  if (!outputFile) {
-    std::cerr << "Failed to open output file." << std::endl;
-    return -1;
-  }
-
-  // 写入Opus数据
-  outputFile.write(reinterpret_cast<const char*>(opusData.data()),
-                   opusData.size());
-
-  // 完成
-  std::cout << "Encoding complete. size:" << pcmData.size() * 2 << std::endl;
-
-  return 0;
-}
diff --git a/xmake.lua b/xmake.lua
index 48ee512..061e030 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -7,16 +7,12 @@ set_languages("c++17")
 
 set_installdir("$(projectdir)/out")
 
-option("server_only")
-    set_showmenu(true)
-option_end()
-
 add_defines("ASIO_STANDALONE", "ASIO_HAS_STD_TYPE_TRAITS", "ASIO_HAS_STD_SHARED_PTR", 
     "ASIO_HAS_STD_ADDRESSOF", "ASIO_HAS_STD_ATOMIC", "ASIO_HAS_STD_CHRONO", 
     "ASIO_HAS_CSTDINT", "ASIO_HAS_STD_ARRAY",  "ASIO_HAS_STD_SYSTEM_ERROR")
 
-add_requires("asio 1.24.0", "nlohmann_json", "spdlog 1.11.0", "openfec", "libopus 1.4")
-add_packages("asio", "nlohmann_json", "spdlog", "openfec", "opus")
+add_requires("asio 1.24.0", "nlohmann_json", "spdlog 1.11.0", "openfec", "libopus 1.4", "sdl2")
+add_packages("asio", "nlohmann_json", "spdlog", "openfec", "libopus", "sdl2")
 
 includes("thirdparty")
 
@@ -271,10 +267,10 @@ target("projectx")
 --     add_files("tests/fec/simple_server.cpp")
 --     add_includedirs("tests/fec")
 
--- target("opus_test")
---     set_kind("binary")
---     add_packages("libopus")
---     add_files("tests/opus/OpusEncoderImpl.cpp",
---         "tests/opus/OpusDecoderImpl.cpp",
---         "tests/opus/main.cpp")
---     add_includedirs("tests/opus")
\ No newline at end of file
+target("opus_test")
+    set_kind("binary")
+    add_packages("libopus", "sdl2")
+    add_files("tests/opus/OpusEncoderImpl.cpp",
+        "tests/opus/OpusDecoderImpl.cpp",
+        "tests/opus/main.cpp")
+    add_includedirs("tests/opus")
\ No newline at end of file