diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index eb76ef7cac..63fe195530 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -136,7 +136,7 @@ jobs:
       - name: Install ninja-build libgtk-3-dev
         run: sudo apt-get install -y ninja-build libgtk-3-dev
       - name: Install elinux
-        run:  git clone https://github.com/sony/flutter-elinux.git ~/flutter-elinux
+        run:  git clone https://github.com/sony/flutter-elinux.git -b 3.27.1 ~/flutter-elinux
       - name: Build for elinux
         working-directory: ./example
         run: /home/runner/flutter-elinux/bin/flutter-elinux pub get && /home/runner/flutter-elinux/bin/flutter-elinux build elinux
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6120e9fb8c..f4687f52a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 
 # Changelog
 
+[0.14.2] - 2025-07-01
+
+* [Windows/Linux] feat: Add audio processing and sink API for cpp. (#1867)
+* [Linux] fix: Fixed audio device selection error for Linux. (#1864)
+* [Android] fix: Fix screen capture orientation for landscape-native devices (#1854)
+
 [0.14.1] - 2025-05-22
 
 * [Android] fix: Recording bug (#1839)
diff --git a/android/src/main/java/com/cloudwebrtc/webrtc/OrientationAwareScreenCapturer.java b/android/src/main/java/com/cloudwebrtc/webrtc/OrientationAwareScreenCapturer.java
index 13a46c4964..7bee5d0dc2 100644
--- a/android/src/main/java/com/cloudwebrtc/webrtc/OrientationAwareScreenCapturer.java
+++ b/android/src/main/java/com/cloudwebrtc/webrtc/OrientationAwareScreenCapturer.java
@@ -15,6 +15,7 @@
 import android.view.WindowManager;
 import android.app.Activity;
 import android.hardware.display.DisplayManager;
+import android.util.DisplayMetrics;
 import android.hardware.display.VirtualDisplay;
 import android.media.projection.MediaProjectionManager;
 import android.os.Looper;
@@ -76,9 +77,11 @@ public void onFrame(VideoFrame frame) {
     }
 
     private boolean isDeviceOrientationPortrait() {
-        final int surfaceRotation = windowManager.getDefaultDisplay().getRotation();
-
-        return surfaceRotation != Surface.ROTATION_90 && surfaceRotation != Surface.ROTATION_270;
+        final Display display = windowManager.getDefaultDisplay();
+        final DisplayMetrics metrics = new DisplayMetrics();
+        display.getRealMetrics(metrics);
+        
+        return metrics.heightPixels > metrics.widthPixels;
     }
 
 
diff --git a/common/cpp/include/flutter_webrtc_base.h b/common/cpp/include/flutter_webrtc_base.h
index 9edabc7680..e894978ab1 100644
--- a/common/cpp/include/flutter_webrtc_base.h
+++ b/common/cpp/include/flutter_webrtc_base.h
@@ -12,6 +12,7 @@
 #include "libwebrtc.h"
 
 #include "rtc_audio_device.h"
+#include "rtc_audio_processing.h"
 #include "rtc_desktop_device.h"
 #include "rtc_dtmf_sender.h"
 #include "rtc_media_stream.h"
@@ -21,8 +22,6 @@
 #include "rtc_peerconnection_factory.h"
 #include "rtc_video_device.h"
 
-#include "uuidxx.h"
-
 namespace flutter_webrtc_plugin {
 
 using namespace libwebrtc;
@@ -46,14 +45,18 @@ class FlutterWebRTCBase {
   FlutterWebRTCBase(BinaryMessenger* messenger, TextureRegistrar* textures, TaskRunner* task_runner);
   ~FlutterWebRTCBase();
 
+  virtual scoped_refptr<RTCAudioProcessing> audio_processing() {
+    return audio_processing_;
+  }
+
+  virtual scoped_refptr<RTCMediaTrack> MediaTrackForId(const std::string& id);
+
   std::string GenerateUUID();
 
   RTCPeerConnection* PeerConnectionForId(const std::string& id);
 
   void RemovePeerConnectionForId(const std::string& id);
 
-  RTCMediaTrack* MediaTrackForId(const std::string& id);
-
   void RemoveMediaTrackForId(const std::string& id);
 
   FlutterPeerConnectionObserver* PeerConnectionObserversForId(
@@ -104,6 +107,7 @@ class FlutterWebRTCBase {
   scoped_refptr<RTCAudioDevice> audio_device_;
   scoped_refptr<RTCVideoDevice> video_device_;
   scoped_refptr<RTCDesktopDevice> desktop_device_;
+  scoped_refptr<RTCAudioProcessing> audio_processing_;
   RTCConfiguration configuration_;
 
   std::map<std::string, scoped_refptr<RTCPeerConnection>> peerconnections_;
diff --git a/common/cpp/src/flutter_media_stream.cc b/common/cpp/src/flutter_media_stream.cc
index 324dbdc4ce..3f7a7a97a9 100644
--- a/common/cpp/src/flutter_media_stream.cc
+++ b/common/cpp/src/flutter_media_stream.cc
@@ -288,7 +288,6 @@ void FlutterMediaStream::GetUserVideo(const EncodableMap& constraints,
   if (!video_capturer.get())
     return;
 
-  
   video_capturer->StartCapture();
 
   const char* video_source_label = "video_input";
@@ -333,10 +332,11 @@ void FlutterMediaStream::GetSources(std::unique_ptr<MethodResultProxy> result) {
 
   for (uint16_t i = 0; i < nb_audio_devices; i++) {
     base_->audio_device_->RecordingDeviceName(i, strNameUTF8, strGuidUTF8);
+    std::string device_id = strlen(strGuidUTF8) > 0 ? std::string(strGuidUTF8)
+                                                    : std::string(strNameUTF8);
     EncodableMap audio;
     audio[EncodableValue("label")] = EncodableValue(std::string(strNameUTF8));
-    audio[EncodableValue("deviceId")] =
-        EncodableValue(std::string(strGuidUTF8));
+    audio[EncodableValue("deviceId")] = EncodableValue(device_id);
     audio[EncodableValue("facing")] = "";
     audio[EncodableValue("kind")] = "audioinput";
     sources.push_back(EncodableValue(audio));
@@ -345,10 +345,11 @@ void FlutterMediaStream::GetSources(std::unique_ptr<MethodResultProxy> result) {
   nb_audio_devices = base_->audio_device_->PlayoutDevices();
   for (uint16_t i = 0; i < nb_audio_devices; i++) {
     base_->audio_device_->PlayoutDeviceName(i, strNameUTF8, strGuidUTF8);
+    std::string device_id = strlen(strGuidUTF8) > 0 ? std::string(strGuidUTF8)
+                                                    : std::string(strNameUTF8);
     EncodableMap audio;
     audio[EncodableValue("label")] = EncodableValue(std::string(strNameUTF8));
-    audio[EncodableValue("deviceId")] =
-        EncodableValue(std::string(strGuidUTF8));
+    audio[EncodableValue("deviceId")] = EncodableValue(device_id);
     audio[EncodableValue("facing")] = "";
     audio[EncodableValue("kind")] = "audiooutput";
     sources.push_back(EncodableValue(audio));
@@ -373,13 +374,16 @@ void FlutterMediaStream::GetSources(std::unique_ptr<MethodResultProxy> result) {
 void FlutterMediaStream::SelectAudioOutput(
     const std::string& device_id,
     std::unique_ptr<MethodResultProxy> result) {
-  char strPlayoutName[256];
-  char strPlayoutGuid[256];
+  char deviceName[256];
+  char deviceGuid[256];
   int playout_devices = base_->audio_device_->PlayoutDevices();
   bool found = false;
   for (uint16_t i = 0; i < playout_devices; i++) {
-    base_->audio_device_->PlayoutDeviceName(i, strPlayoutName, strPlayoutGuid);
-    if (device_id != "" && device_id == strPlayoutGuid) {
+    base_->audio_device_->PlayoutDeviceName(i, deviceName, deviceGuid);
+    std::string cur_device_id = strlen(deviceGuid) > 0
+                                    ? std::string(deviceGuid)
+                                    : std::string(deviceName);
+    if (device_id != "" && device_id == cur_device_id) {
       base_->audio_device_->SetPlayoutDevice(i);
       found = true;
       break;
@@ -395,14 +399,16 @@ void FlutterMediaStream::SelectAudioOutput(
 void FlutterMediaStream::SelectAudioInput(
     const std::string& device_id,
     std::unique_ptr<MethodResultProxy> result) {
-  char strPlayoutName[256];
-  char strPlayoutGuid[256];
+  char deviceName[256];
+  char deviceGuid[256];
   int playout_devices = base_->audio_device_->RecordingDevices();
   bool found = false;
   for (uint16_t i = 0; i < playout_devices; i++) {
-    base_->audio_device_->RecordingDeviceName(i, strPlayoutName,
-                                              strPlayoutGuid);
-    if (device_id != "" && device_id == strPlayoutGuid) {
+    base_->audio_device_->RecordingDeviceName(i, deviceName, deviceGuid);
+    std::string cur_device_id = strlen(deviceGuid) > 0
+                                    ? std::string(deviceGuid)
+                                    : std::string(deviceName);
+    if (device_id != "" && device_id == cur_device_id) {
       base_->audio_device_->SetRecordingDevice(i);
       found = true;
       break;
@@ -538,14 +544,14 @@ void FlutterMediaStream::MediaStreamTrackDispose(
       if (track->id().std_string() == track_id) {
         stream->RemoveTrack(track);
 
-      if (base_->video_capturers_.find(track_id) !=
-        base_->video_capturers_.end()) {
-        auto video_capture = base_->video_capturers_[track_id];
-        if (video_capture->CaptureStarted()) {
-          video_capture->StopCapture();
+        if (base_->video_capturers_.find(track_id) !=
+            base_->video_capturers_.end()) {
+          auto video_capture = base_->video_capturers_[track_id];
+          if (video_capture->CaptureStarted()) {
+            video_capture->StopCapture();
+          }
+          base_->video_capturers_.erase(track_id);
         }
-        base_->video_capturers_.erase(track_id);
-       }
       }
     }
   }
diff --git a/common/cpp/src/flutter_webrtc.cc b/common/cpp/src/flutter_webrtc.cc
index a402e47ed9..5e0afb6e17 100644
--- a/common/cpp/src/flutter_webrtc.cc
+++ b/common/cpp/src/flutter_webrtc.cc
@@ -352,7 +352,8 @@ void FlutterWebRTC::HandleMethodCall(
       return;
     }
     DataChannelSend(data_channel, type, data, std::move(result));
-  } else if (method_call.method_name().compare("dataChannelGetBufferedAmount") == 0) {
+  } else if (method_call.method_name().compare(
+                 "dataChannelGetBufferedAmount") == 0) {
     if (!method_call.arguments()) {
       result->Error("Bad Arguments", "Null constraints arguments received");
       return;
diff --git a/common/cpp/src/flutter_webrtc_base.cc b/common/cpp/src/flutter_webrtc_base.cc
index a8c184ba15..acd169cb2c 100644
--- a/common/cpp/src/flutter_webrtc_base.cc
+++ b/common/cpp/src/flutter_webrtc_base.cc
@@ -3,6 +3,8 @@
 #include "flutter_data_channel.h"
 #include "flutter_peerconnection.h"
 
+#include "helper.h"
+
 namespace flutter_webrtc_plugin {
 
 const char* kEventChannelName = "FlutterWebRTC.Event";
@@ -16,6 +18,7 @@ FlutterWebRTCBase::FlutterWebRTCBase(BinaryMessenger* messenger,
   audio_device_ = factory_->GetAudioDevice();
   video_device_ = factory_->GetVideoDevice();
   desktop_device_ = factory_->GetDesktopDevice();
+  audio_processing_ = factory_->GetAudioProcessing();
   event_channel_ = EventChannelProxy::Create(messenger_, task_runner_, kEventChannelName);
 }
 
@@ -28,7 +31,7 @@ EventChannelProxy* FlutterWebRTCBase::event_channel() {
 }
 
 std::string FlutterWebRTCBase::GenerateUUID() {
-  return uuidxx::uuid::Generate().ToString(false);
+  return libwebrtc::Helper::CreateRandomUuid().std_string();
 }
 
 RTCPeerConnection* FlutterWebRTCBase::PeerConnectionForId(
@@ -47,11 +50,11 @@ void FlutterWebRTCBase::RemovePeerConnectionForId(const std::string& id) {
     peerconnections_.erase(it);
 }
 
-RTCMediaTrack* FlutterWebRTCBase ::MediaTrackForId(const std::string& id) {
+scoped_refptr<RTCMediaTrack> FlutterWebRTCBase ::MediaTrackForId(const std::string& id) {
   auto it = local_tracks_.find(id);
 
   if (it != local_tracks_.end())
-    return (*it).second.get();
+    return (*it).second;
 
   for (auto kv : peerconnection_observers_) {
     auto pco = kv.second.get();
diff --git a/elinux/CMakeLists.txt b/elinux/CMakeLists.txt
index 6ae0ea6390..3454f57da4 100644
--- a/elinux/CMakeLists.txt
+++ b/elinux/CMakeLists.txt
@@ -11,7 +11,6 @@ add_definitions(-DRTC_DESKTOP_DEVICE)
 add_definitions(-DFLUTTER_ELINUX)
 
 add_library(${PLUGIN_NAME} SHARED
-  "../third_party/uuidxx/uuidxx.cc"
   "../common/cpp/src/flutter_data_channel.cc"
   "../common/cpp/src/flutter_frame_cryptor.cc"
   "../common/cpp/src/flutter_frame_capturer.cc"
@@ -28,7 +27,6 @@ add_library(${PLUGIN_NAME} SHARED
 include_directories(
   "${CMAKE_CURRENT_SOURCE_DIR}"
   "${CMAKE_CURRENT_SOURCE_DIR}/../common/cpp/include"
-  "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/uuidxx"
   "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/libwebrtc/include"
   "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/svpng"
 )
@@ -39,6 +37,7 @@ set_target_properties(${PLUGIN_NAME} PROPERTIES
 target_compile_definitions(${PLUGIN_NAME} PRIVATE FLUTTER_PLUGIN_IMPL)
 target_include_directories(${PLUGIN_NAME} INTERFACE
   "${CMAKE_CURRENT_SOURCE_DIR}"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../common/cpp/include"
 )
 target_link_libraries(${PLUGIN_NAME} PRIVATE 
   flutter
diff --git a/linux/CMakeLists.txt b/linux/CMakeLists.txt
index 5e968390f2..8adc01ed33 100644
--- a/linux/CMakeLists.txt
+++ b/linux/CMakeLists.txt
@@ -9,7 +9,6 @@ set(CMAKE_CXX_STANDARD 17)
 add_definitions(-DRTC_DESKTOP_DEVICE)
 
 add_library(${PLUGIN_NAME} SHARED
-  "../third_party/uuidxx/uuidxx.cc"
   "../common/cpp/src/flutter_data_channel.cc"
   "../common/cpp/src/flutter_frame_cryptor.cc"
   "../common/cpp/src/flutter_media_stream.cc"
@@ -31,7 +30,6 @@ include_directories(
   "${CMAKE_CURRENT_SOURCE_DIR}"
   "${CMAKE_CURRENT_SOURCE_DIR}/flutter/include"
   "${CMAKE_CURRENT_SOURCE_DIR}/../common/cpp/include"
-  "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/uuidxx"
   "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/libwebrtc/include"
   "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/svpng"
 )
@@ -41,7 +39,10 @@ set_target_properties(${PLUGIN_NAME} PROPERTIES
   CXX_VISIBILITY_PRESET hidden)
 target_compile_definitions(${PLUGIN_NAME} PRIVATE FLUTTER_PLUGIN_IMPL)
 target_include_directories(${PLUGIN_NAME} INTERFACE
-"${CMAKE_CURRENT_SOURCE_DIR}")
+  "${CMAKE_CURRENT_SOURCE_DIR}"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../common/cpp/include"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/libwebrtc/include"
+)
 target_link_libraries(${PLUGIN_NAME} PRIVATE flutter)
 target_link_libraries(${PLUGIN_NAME} PRIVATE PkgConfig::GTK)
 
diff --git a/linux/flutter_webrtc/flutter_web_r_t_c_plugin.h b/linux/flutter_webrtc/flutter_web_r_t_c_plugin.h
index 5d88c7b76d..cee9ce7b68 100644
--- a/linux/flutter_webrtc/flutter_web_r_t_c_plugin.h
+++ b/linux/flutter_webrtc/flutter_web_r_t_c_plugin.h
@@ -10,6 +10,10 @@ G_BEGIN_DECLS
 #define FLUTTER_PLUGIN_EXPORT
 #endif
 
+namespace flutter_webrtc_plugin {
+class FlutterWebRTC;
+}  // namespace flutter_webrtc_plugin
+
 typedef struct _FlutterWebrtcPlugin FlutterWebrtcPlugin;
 typedef struct {
   GObjectClass parent_class;
@@ -20,6 +24,8 @@ FLUTTER_PLUGIN_EXPORT GType flutter_webrtc_plugin_get_type();
 FLUTTER_PLUGIN_EXPORT void flutter_web_r_t_c_plugin_register_with_registrar(
     FlPluginRegistrar* registrar);
 
+FLUTTER_PLUGIN_EXPORT flutter_webrtc_plugin::FlutterWebRTC* flutter_webrtc_plugin_get_shared_instance();
+
 G_END_DECLS
 
 #endif  // PLUGINS_FLUTTER_WEBRTC_PLUGIN_CPP_H_
diff --git a/linux/flutter_webrtc_plugin.cc b/linux/flutter_webrtc_plugin.cc
index 336204d55a..b2a2a847fe 100644
--- a/linux/flutter_webrtc_plugin.cc
+++ b/linux/flutter_webrtc_plugin.cc
@@ -5,7 +5,7 @@
 #include "task_runner_linux.h"
 
 const char* kChannelName = "FlutterWebRTC.Method";
-
+static flutter_webrtc_plugin::FlutterWebRTC* g_shared_instance = nullptr;
 //#if defined(_WINDOWS)
 
 namespace flutter_webrtc_plugin {
@@ -49,6 +49,7 @@ class FlutterWebRTCPluginImpl : public FlutterWebRTCPlugin {
         textures_(registrar->texture_registrar()),
         task_runner_(std::make_unique<TaskRunnerLinux>()) {
     webrtc_ = std::make_unique<FlutterWebRTC>(this);
+    g_shared_instance = webrtc_.get();
   }
 
   // Called when a method is called on |channel_|;
@@ -75,4 +76,8 @@ void flutter_web_r_t_c_plugin_register_with_registrar(
   static auto* plugin_registrar = new flutter::PluginRegistrar(registrar);
   flutter_webrtc_plugin::FlutterWebRTCPluginImpl::RegisterWithRegistrar(
       plugin_registrar);
-}
\ No newline at end of file
+}
+
+flutter_webrtc_plugin::FlutterWebRTC* flutter_webrtc_plugin_get_shared_instance() {
+  return g_shared_instance;
+} 
\ No newline at end of file
diff --git a/pubspec.yaml b/pubspec.yaml
index 719c1a1309..a0c02d06ee 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_webrtc
 description: Flutter WebRTC plugin for iOS/Android/Destkop/Web, based on GoogleWebRTC.
-version: 0.14.1
+version: 0.14.2
 homepage: https://github.com/cloudwebrtc/flutter-webrtc
 environment:
   sdk: ">=3.3.0 <4.0.0"
diff --git a/third_party/libwebrtc/include/rtc_audio_frame.h b/third_party/libwebrtc/include/rtc_audio_frame.h
index 3f276a1676..7774f0c787 100644
--- a/third_party/libwebrtc/include/rtc_audio_frame.h
+++ b/third_party/libwebrtc/include/rtc_audio_frame.h
@@ -1,17 +1,17 @@
-#ifndef AUDIO_FRAME_HXX
-#define AUDIO_FRAME_HXX
+#ifndef LIB_WEBRTC_RTC_AUDIO_FRAME_HXX
+#define LIB_WEBRTC_RTC_AUDIO_FRAME_HXX
 
-#include "media_manager_types.h"
+#include "rtc_types.h"
 
-namespace b2bua {
+namespace libwebrtc {
 
-class AudioFrame {
+class AudioFrame : public RefCountInterface {
  public:
   /**
    * @brief Creates a new instance of AudioFrame.
    * @return AudioFrame*: a pointer to the newly created AudioFrame.
    */
-  MEDIA_MANAGER_API static AudioFrame* Create();
+  LIB_WEBRTC_API static AudioFrame* Create();
 
   /**
    * @brief Creates a new instance of AudioFrame with specified parameters.
@@ -23,16 +23,11 @@ class AudioFrame {
    * @param num_channels: the number of audio channels.
    * @return AudioFrame*: a pointer to the newly created AudioFrame.
    */
-  MEDIA_MANAGER_API static AudioFrame* Create(int id, uint32_t timestamp,
-                                              const int16_t* data,
-                                              size_t samples_per_channel,
-                                              int sample_rate_hz,
-                                              size_t num_channels = 1);
-
-  /**
-   * @brief Releases the memory of this AudioFrame.
-   */
-  virtual void Release() = 0;
+  LIB_WEBRTC_API static AudioFrame* Create(int id, uint32_t timestamp,
+                                           const int16_t* data,
+                                           size_t samples_per_channel,
+                                           int sample_rate_hz,
+                                           size_t num_channels = 1);
 
  public:
   /**
@@ -103,6 +98,6 @@ class AudioFrame {
   virtual int id() = 0;
 };
 
-};  // namespace b2bua
+};  // namespace libwebrtc
 
-#endif
+#endif  // LIB_WEBRTC_RTC_AUDIO_FRAME_HXX
diff --git a/third_party/libwebrtc/include/rtc_audio_processing.h b/third_party/libwebrtc/include/rtc_audio_processing.h
new file mode 100644
index 0000000000..908a16a380
--- /dev/null
+++ b/third_party/libwebrtc/include/rtc_audio_processing.h
@@ -0,0 +1,35 @@
+#ifndef LIB_WEBRTC_RTC_AUDIO_PROCESSING_HXX
+#define LIB_WEBRTC_RTC_AUDIO_PROCESSING_HXX
+
+#include "rtc_types.h"
+
+namespace libwebrtc {
+
+class RTCAudioProcessing : public RefCountInterface {
+ public:
+  class CustomProcessing {
+   public:
+    virtual void Initialize(int sample_rate_hz, int num_channels) = 0;
+
+    virtual void Process(int num_bands, int num_frames, int buffer_size,
+                         float* buffer) = 0;
+
+    virtual void Reset(int new_rate) = 0;
+
+    virtual void Release() = 0;
+
+   protected:
+    virtual ~CustomProcessing() {}
+  };
+
+ public:
+  virtual void SetCapturePostProcessing(
+      CustomProcessing* capture_post_processing) = 0;
+
+  virtual void SetRenderPreProcessing(
+      CustomProcessing* render_pre_processing) = 0;
+};
+
+}  // namespace libwebrtc
+
+#endif  // LIB_WEBRTC_RTC_AUDIO_PROCESSING_HXX
\ No newline at end of file
diff --git a/third_party/libwebrtc/include/rtc_audio_source.h b/third_party/libwebrtc/include/rtc_audio_source.h
index 43e39fd801..e2f98fca0f 100644
--- a/third_party/libwebrtc/include/rtc_audio_source.h
+++ b/third_party/libwebrtc/include/rtc_audio_source.h
@@ -13,6 +13,16 @@ namespace libwebrtc {
  * processing and transmission mechanisms.
  */
 class RTCAudioSource : public RefCountInterface {
+ public:
+  enum SourceType { kMicrophone, kCustom };
+
+ public:
+  virtual void CaptureFrame(const void* audio_data, int bits_per_sample,
+                            int sample_rate, size_t number_of_channels,
+                            size_t number_of_frames) = 0;
+
+  virtual SourceType GetSourceType() const = 0;
+
  protected:
   /**
    * The destructor for the RTCAudioSource class.
diff --git a/third_party/libwebrtc/include/rtc_audio_track.h b/third_party/libwebrtc/include/rtc_audio_track.h
index c64e4bc4a5..82459005d1 100644
--- a/third_party/libwebrtc/include/rtc_audio_track.h
+++ b/third_party/libwebrtc/include/rtc_audio_track.h
@@ -17,6 +17,10 @@ class RTCAudioTrack : public RTCMediaTrack {
   // volume in [0-10]
   virtual void SetVolume(double volume) = 0;
 
+  virtual void AddSink(AudioTrackSink* sink) = 0;
+
+  virtual void RemoveSink(AudioTrackSink* sink) = 0;
+
  protected:
   /**
    * The destructor for the RTCAudioTrack class.
diff --git a/third_party/libwebrtc/include/rtc_media_track.h b/third_party/libwebrtc/include/rtc_media_track.h
index ff5a2f743e..d971c89d27 100644
--- a/third_party/libwebrtc/include/rtc_media_track.h
+++ b/third_party/libwebrtc/include/rtc_media_track.h
@@ -5,6 +5,15 @@
 
 namespace libwebrtc {
 
+class AudioTrackSink {
+ public:
+  virtual void OnData(const void* audio_data, int bits_per_sample,
+                      int sample_rate, size_t number_of_channels,
+                      size_t number_of_frames) = 0;
+ protected:
+  virtual ~AudioTrackSink() {}
+};
+
 /*Media Track interface*/
 class RTCMediaTrack : public RefCountInterface {
  public:
diff --git a/third_party/libwebrtc/include/rtc_peerconnection_factory.h b/third_party/libwebrtc/include/rtc_peerconnection_factory.h
index cb024672c2..1b6b8c1aec 100644
--- a/third_party/libwebrtc/include/rtc_peerconnection_factory.h
+++ b/third_party/libwebrtc/include/rtc_peerconnection_factory.h
@@ -16,6 +16,7 @@ namespace libwebrtc {
 
 class RTCPeerConnection;
 class RTCAudioDevice;
+class RTCAudioProcessing;
 class RTCVideoDevice;
 class RTCRtpCapabilities;
 
@@ -33,12 +34,16 @@ class RTCPeerConnectionFactory : public RefCountInterface {
 
   virtual scoped_refptr<RTCAudioDevice> GetAudioDevice() = 0;
 
+  virtual scoped_refptr<RTCAudioProcessing> GetAudioProcessing() = 0;
+
   virtual scoped_refptr<RTCVideoDevice> GetVideoDevice() = 0;
 #ifdef RTC_DESKTOP_DEVICE
   virtual scoped_refptr<RTCDesktopDevice> GetDesktopDevice() = 0;
 #endif
   virtual scoped_refptr<RTCAudioSource> CreateAudioSource(
-      const string audio_source_label) = 0;
+      const string audio_source_label,
+      RTCAudioSource::SourceType source_type =
+          RTCAudioSource::SourceType::kMicrophone) = 0;
 
   virtual scoped_refptr<RTCVideoSource> CreateVideoSource(
       scoped_refptr<RTCVideoCapturer> capturer, const string video_source_label,
diff --git a/third_party/libwebrtc/lib/linux-arm64/libwebrtc.so b/third_party/libwebrtc/lib/linux-arm64/libwebrtc.so
index 22c3bde89f..9ff7018adb 100755
Binary files a/third_party/libwebrtc/lib/linux-arm64/libwebrtc.so and b/third_party/libwebrtc/lib/linux-arm64/libwebrtc.so differ
diff --git a/third_party/libwebrtc/lib/linux-x64/libwebrtc.so b/third_party/libwebrtc/lib/linux-x64/libwebrtc.so
index ae9c4eec39..19e93a1662 100755
Binary files a/third_party/libwebrtc/lib/linux-x64/libwebrtc.so and b/third_party/libwebrtc/lib/linux-x64/libwebrtc.so differ
diff --git a/third_party/libwebrtc/lib/win64/libwebrtc.dll b/third_party/libwebrtc/lib/win64/libwebrtc.dll
index e62437621a..665183e7b6 100644
Binary files a/third_party/libwebrtc/lib/win64/libwebrtc.dll and b/third_party/libwebrtc/lib/win64/libwebrtc.dll differ
diff --git a/third_party/uuidxx/LICENSE b/third_party/uuidxx/LICENSE
deleted file mode 100644
index 6eaf314417..0000000000
--- a/third_party/uuidxx/LICENSE
+++ /dev/null
@@ -1,19 +0,0 @@
-Copyright (C) 2016 by NeoSmart Technologies <https://neosmart.net/>
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
diff --git a/third_party/uuidxx/uuidxx.cc b/third_party/uuidxx/uuidxx.cc
deleted file mode 100644
index a504635c24..0000000000
--- a/third_party/uuidxx/uuidxx.cc
+++ /dev/null
@@ -1,104 +0,0 @@
-#ifdef _WIN32
-#ifndef _CRT_SECURE_NO_WARNINGS
-#define _CRT_SECURE_NO_WARNINGS
-#endif
-#endif
-
-#include "uuidxx.h"
-#include <inttypes.h>
-#include <stdio.h>
-#include <string.h>
-#include <random>
-
-using namespace std;
-using namespace uuidxx;
-
-bool uuid::operator==(const uuid& guid2) const {
-  return memcmp(&guid2, this, sizeof(uuid)) == 0;
-}
-
-bool uuid::operator!=(const uuid& guid2) const {
-  return !(*this == guid2);
-}
-
-bool uuid::operator<(const uuid& guid2) const {
-  return memcmp(this, &guid2, sizeof(uuid)) < 0;
-}
-
-bool uuid::operator>(const uuid& guid2) const {
-  return memcmp(this, &guid2, sizeof(uuid)) > 0;
-}
-
-uuid::uuid(const std::string& uuidString) : uuid(uuidString.c_str()) {}
-
-uuid::uuid(const char* uuidString) {
-  if (uuidString == nullptr) {
-    // special case, and prevents random bugs
-    memset(this, 0, sizeof(uuid));
-    return;
-  }
-
-  if (uuidString[0] == '{') {
-    sscanf(uuidString,
-           "{%08" SCNx32 "-%04" SCNx16 "-%04" SCNx16 "-%02" SCNx8 "%02" SCNx8
-           "-%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8
-           "%02" SCNx8 "}",
-           &Uuid.Data1, &Uuid.Data2, &Uuid.Data3, &Uuid.Data4[0],
-           &Uuid.Data4[1], &Uuid.Data4[2], &Uuid.Data4[3], &Uuid.Data4[4],
-           &Uuid.Data4[5], &Uuid.Data4[6], &Uuid.Data4[7]);
-  } else {
-    sscanf(uuidString,
-           "%08" SCNx32 "-%04" SCNx16 "-%04" SCNx16 "-%02" SCNx8 "%02" SCNx8
-           "-%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8 "%02" SCNx8
-           "%02" SCNx8 "",
-           &Uuid.Data1, &Uuid.Data2, &Uuid.Data3, &Uuid.Data4[0],
-           &Uuid.Data4[1], &Uuid.Data4[2], &Uuid.Data4[3], &Uuid.Data4[4],
-           &Uuid.Data4[5], &Uuid.Data4[6], &Uuid.Data4[7]);
-  }
-}
-
-string uuid::ToString(bool withBraces) const {
-  char buffer[39];
-  sprintf(buffer, "%s%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X%s",
-          withBraces ? "{" : "", Uuid.Data1, Uuid.Data2, Uuid.Data3,
-          Uuid.Data4[0], Uuid.Data4[1], Uuid.Data4[2], Uuid.Data4[3],
-          Uuid.Data4[4], Uuid.Data4[5], Uuid.Data4[6], Uuid.Data4[7],
-          withBraces ? "}" : "");
-  return buffer;
-}
-
-uuid uuid::FromString(const char* uuidString) {
-  uuid temp(uuidString);
-  return temp;
-}
-
-uuid uuid::FromString(const std::string& uuidString) {
-  uuid temp(uuidString.c_str());
-  return temp;
-}
-
-uuid uuid::Generatev4() {
-  // mach-o does not support TLS and clang still has issues with thread_local
-#if !defined(__APPLE__) && !defined(__clang__)
-  thread_local std::random_device rd;
-  thread_local auto gen = std::mt19937_64(rd());
-#else
-  std::random_device rd;
-  std::mt19937_64 gen(rd());
-#endif
-  std::uniform_int_distribution<uint64_t> dis64;
-
-  uuid newGuid;
-  newGuid.WideIntegers[0] = dis64(gen);
-  newGuid.WideIntegers[1] = dis64(gen);
-
-  // RFC4122 defines (psuedo)random uuids (in big-endian notation):
-  // MSB of DATA4[0] specifies the variant and should be 0b10 to indicate
-  // standard uuid, and MSB of DATA3 should be 0b0100 to indicate version 4
-  newGuid.Bytes.Data4[0] =
-      (newGuid.Bytes.Data4[0] & 0x3F) | static_cast<uint8_t>(0x80);
-  newGuid.Bytes.Data3[1] =
-      (newGuid.Bytes.Data3[1] & 0x0F) | static_cast<uint8_t>(0x40);
-
-  return newGuid;
-}
diff --git a/third_party/uuidxx/uuidxx.h b/third_party/uuidxx/uuidxx.h
deleted file mode 100644
index 2d36271886..0000000000
--- a/third_party/uuidxx/uuidxx.h
+++ /dev/null
@@ -1,66 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <stdexcept>
-#include <string>
-
-namespace uuidxx {
-enum class Variant { Nil, Version1, Version2, Version3, Version4, Version5 };
-
-class NotImplemented : public std::logic_error {
- public:
-  NotImplemented() : std::logic_error("Function not yet implemented"){};
-};
-
-union uuid {
- private:
-  static uuid Generatev4();
-
- public:
-  uint64_t WideIntegers[2];
-  struct _internalData {
-    uint32_t Data1;
-    uint16_t Data2;
-    uint16_t Data3;
-    uint8_t Data4[8];
-  } Uuid;
-  struct _byteRepresentation {
-    uint8_t Data1[4];
-    uint8_t Data2[2];
-    uint8_t Data3[2];
-    uint8_t Data4[8];
-  } Bytes;
-
-  bool operator==(const uuid& guid2) const;
-  bool operator!=(const uuid& guid2) const;
-  bool operator<(const uuid& guid2) const;
-  bool operator>(const uuid& guid2) const;
-
-  uuid() = default;
-
-  uuid(const char* uuidString);
-  uuid(const std::string& uuidString);
-  static uuid FromString(const char* uuidString);
-  static uuid FromString(const std::string& uuidString);
-
-  static inline uuid Generate(Variant v = Variant::Version4) {
-    switch (v) {
-      case Variant::Nil:
-        return uuid(nullptr);  // special case;
-      case Variant::Version1:
-      case Variant::Version2:
-      case Variant::Version3:
-      case Variant::Version5:
-        throw new NotImplemented();
-      case Variant::Version4:
-        return Generatev4();
-    }
-    return uuid(nullptr);
-  }
-
-  std::string ToString(bool withBraces = true) const;
-};
-
-static_assert(sizeof(uuid) == 2 * sizeof(int64_t),
-              "Check uuid type declaration/padding!");
-}  // namespace uuidxx
diff --git a/windows/CMakeLists.txt b/windows/CMakeLists.txt
index 39ee5943ac..bb6405767f 100644
--- a/windows/CMakeLists.txt
+++ b/windows/CMakeLists.txt
@@ -20,7 +20,6 @@ add_library(${PLUGIN_NAME} SHARED
   "../common/cpp/src/flutter_screen_capture.cc"
   "../common/cpp/src/flutter_webrtc.cc"
   "../common/cpp/src/flutter_webrtc_base.cc"
-  "../third_party/uuidxx/uuidxx.cc"
   "flutter_webrtc_plugin.cc"
   "task_runner_windows.cc"
 )
@@ -28,7 +27,6 @@ add_library(${PLUGIN_NAME} SHARED
 include_directories(
   "${CMAKE_CURRENT_SOURCE_DIR}"
   "${CMAKE_CURRENT_SOURCE_DIR}/../common/cpp/include"
-  "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/uuidxx"
   "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/svpng"
   "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/libwebrtc/include"
 )
@@ -39,6 +37,8 @@ set_target_properties(${PLUGIN_NAME} PROPERTIES
 target_compile_definitions(${PLUGIN_NAME} PRIVATE FLUTTER_PLUGIN_IMPL)
 target_include_directories(${PLUGIN_NAME} INTERFACE
   "${CMAKE_CURRENT_SOURCE_DIR}"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../common/cpp/include"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../third_party/libwebrtc/include"
 )
 target_link_libraries(${PLUGIN_NAME} PRIVATE 
   flutter
diff --git a/windows/flutter_webrtc/flutter_web_r_t_c_plugin.h b/windows/flutter_webrtc/flutter_web_r_t_c_plugin.h
index ed2d45208b..5065110e4f 100644
--- a/windows/flutter_webrtc/flutter_web_r_t_c_plugin.h
+++ b/windows/flutter_webrtc/flutter_web_r_t_c_plugin.h
@@ -9,6 +9,10 @@
 #define FLUTTER_PLUGIN_EXPORT __declspec(dllimport)
 #endif
 
+namespace flutter_webrtc_plugin {
+class FlutterWebRTC;
+}  // namespace flutter_webrtc_plugin
+
 #if defined(__cplusplus)
 extern "C" {
 #endif
@@ -16,6 +20,8 @@ extern "C" {
 FLUTTER_PLUGIN_EXPORT void FlutterWebRTCPluginRegisterWithRegistrar(
     FlutterDesktopPluginRegistrarRef registrar);
 
+FLUTTER_PLUGIN_EXPORT flutter_webrtc_plugin::FlutterWebRTC* FlutterWebRTCPluginSharedInstance();
+
 #if defined(__cplusplus)
 }  // extern "C"
 #endif
diff --git a/windows/flutter_webrtc_plugin.cc b/windows/flutter_webrtc_plugin.cc
index 836989c00e..f766d98239 100644
--- a/windows/flutter_webrtc_plugin.cc
+++ b/windows/flutter_webrtc_plugin.cc
@@ -7,6 +7,7 @@
 #include <flutter/plugin_registrar_windows.h>
 
 const char* kChannelName = "FlutterWebRTC.Method";
+static flutter_webrtc_plugin::FlutterWebRTC* g_shared_instance = nullptr;
 
 namespace flutter_webrtc_plugin {
 
@@ -23,7 +24,6 @@ class FlutterWebRTCPluginImpl : public FlutterWebRTCPlugin {
     // Uses new instead of make_unique due to private constructor.
     std::unique_ptr<FlutterWebRTCPluginImpl> plugin(
         new FlutterWebRTCPluginImpl(registrar, std::move(channel)));
-
     channel_pointer->SetMethodCallHandler(
         [plugin_pointer = plugin.get()](const auto& call, auto result) {
           plugin_pointer->HandleMethodCall(call, std::move(result));
@@ -49,6 +49,7 @@ class FlutterWebRTCPluginImpl : public FlutterWebRTCPlugin {
         textures_(registrar->texture_registrar()),
         task_runner_(std::make_unique<TaskRunnerWindows>()) {
     webrtc_ = std::make_unique<FlutterWebRTC>(this);
+    g_shared_instance = webrtc_.get();
   }
 
   // Called when a method is called on |channel_|;
@@ -76,4 +77,8 @@ void FlutterWebRTCPluginRegisterWithRegistrar(
   flutter_webrtc_plugin::FlutterWebRTCPluginImpl::RegisterWithRegistrar(
       flutter::PluginRegistrarManager::GetInstance()
           ->GetRegistrar<flutter::PluginRegistrarWindows>(registrar));
-}
\ No newline at end of file
+}
+
+flutter_webrtc_plugin::FlutterWebRTC* FlutterWebRTCPluginSharedInstance() {
+  return g_shared_instance;
+} 
\ No newline at end of file

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