Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 1120 insertions, 0 deletions

diff --git a/third_party/libwebrtc/modules/audio_device/dummy/audio_device_dummy.cc b/third_party/libwebrtc/modules/audio_device/dummy/audio_device_dummy.cc
new file mode 100644
index 0000000000..b8fd837038
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_device/dummy/audio_device_dummy.cc
@@ -0,0 +1,226 @@
+/*
+ *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/audio_device/dummy/audio_device_dummy.h"
+
+namespace webrtc {
+
+int32_t AudioDeviceDummy::ActiveAudioLayer(
+    AudioDeviceModule::AudioLayer& audioLayer) const {
+  return -1;
+}
+
+AudioDeviceGeneric::InitStatus AudioDeviceDummy::Init() {
+  return InitStatus::OK;
+}
+
+int32_t AudioDeviceDummy::Terminate() {
+  return 0;
+}
+
+bool AudioDeviceDummy::Initialized() const {
+  return true;
+}
+
+int16_t AudioDeviceDummy::PlayoutDevices() {
+  return -1;
+}
+
+int16_t AudioDeviceDummy::RecordingDevices() {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::PlayoutDeviceName(uint16_t index,
+                                            char name[kAdmMaxDeviceNameSize],
+                                            char guid[kAdmMaxGuidSize]) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::RecordingDeviceName(uint16_t index,
+                                              char name[kAdmMaxDeviceNameSize],
+                                              char guid[kAdmMaxGuidSize]) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetPlayoutDevice(uint16_t index) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetPlayoutDevice(
+    AudioDeviceModule::WindowsDeviceType device) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetRecordingDevice(uint16_t index) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetRecordingDevice(
+    AudioDeviceModule::WindowsDeviceType device) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::PlayoutIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::InitPlayout() {
+  return -1;
+}
+
+bool AudioDeviceDummy::PlayoutIsInitialized() const {
+  return false;
+}
+
+int32_t AudioDeviceDummy::RecordingIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::InitRecording() {
+  return -1;
+}
+
+bool AudioDeviceDummy::RecordingIsInitialized() const {
+  return false;
+}
+
+int32_t AudioDeviceDummy::StartPlayout() {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::StopPlayout() {
+  return 0;
+}
+
+bool AudioDeviceDummy::Playing() const {
+  return false;
+}
+
+int32_t AudioDeviceDummy::StartRecording() {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::StopRecording() {
+  return 0;
+}
+
+bool AudioDeviceDummy::Recording() const {
+  return false;
+}
+
+int32_t AudioDeviceDummy::InitSpeaker() {
+  return -1;
+}
+
+bool AudioDeviceDummy::SpeakerIsInitialized() const {
+  return false;
+}
+
+int32_t AudioDeviceDummy::InitMicrophone() {
+  return -1;
+}
+
+bool AudioDeviceDummy::MicrophoneIsInitialized() const {
+  return false;
+}
+
+int32_t AudioDeviceDummy::SpeakerVolumeIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetSpeakerVolume(uint32_t volume) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SpeakerVolume(uint32_t& volume) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::MaxSpeakerVolume(uint32_t& maxVolume) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::MinSpeakerVolume(uint32_t& minVolume) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::MicrophoneVolumeIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetMicrophoneVolume(uint32_t volume) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::MicrophoneVolume(uint32_t& volume) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::MaxMicrophoneVolume(uint32_t& maxVolume) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::MinMicrophoneVolume(uint32_t& minVolume) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SpeakerMuteIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetSpeakerMute(bool enable) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SpeakerMute(bool& enabled) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::MicrophoneMuteIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetMicrophoneMute(bool enable) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::MicrophoneMute(bool& enabled) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::StereoPlayoutIsAvailable(bool& available) {
+  return -1;
+}
+int32_t AudioDeviceDummy::SetStereoPlayout(bool enable) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::StereoPlayout(bool& enabled) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::StereoRecordingIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::SetStereoRecording(bool enable) {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::StereoRecording(bool& enabled) const {
+  return -1;
+}
+
+int32_t AudioDeviceDummy::PlayoutDelay(uint16_t& delayMS) const {
+  return -1;
+}
+
+void AudioDeviceDummy::AttachAudioBuffer(AudioDeviceBuffer* audioBuffer) {}
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/audio_device/dummy/audio_device_dummy.h b/third_party/libwebrtc/modules/audio_device/dummy/audio_device_dummy.h
new file mode 100644
index 0000000000..2a2541098e
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_device/dummy/audio_device_dummy.h
@@ -0,0 +1,117 @@
+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef AUDIO_DEVICE_AUDIO_DEVICE_DUMMY_H_
+#define AUDIO_DEVICE_AUDIO_DEVICE_DUMMY_H_
+
+#include <stdint.h>
+
+#include "modules/audio_device/audio_device_buffer.h"
+#include "modules/audio_device/audio_device_generic.h"
+#include "modules/audio_device/include/audio_device.h"
+#include "modules/audio_device/include/audio_device_defines.h"
+
+namespace webrtc {
+
+class AudioDeviceDummy : public AudioDeviceGeneric {
+ public:
+  AudioDeviceDummy() {}
+  virtual ~AudioDeviceDummy() {}
+
+  // Retrieve the currently utilized audio layer
+  int32_t ActiveAudioLayer(
+      AudioDeviceModule::AudioLayer& audioLayer) const override;
+
+  // Main initializaton and termination
+  InitStatus Init() override;
+  int32_t Terminate() override;
+  bool Initialized() const override;
+
+  // Device enumeration
+  int16_t PlayoutDevices() override;
+  int16_t RecordingDevices() override;
+  int32_t PlayoutDeviceName(uint16_t index,
+                            char name[kAdmMaxDeviceNameSize],
+                            char guid[kAdmMaxGuidSize]) override;
+  int32_t RecordingDeviceName(uint16_t index,
+                              char name[kAdmMaxDeviceNameSize],
+                              char guid[kAdmMaxGuidSize]) override;
+
+  // Device selection
+  int32_t SetPlayoutDevice(uint16_t index) override;
+  int32_t SetPlayoutDevice(
+      AudioDeviceModule::WindowsDeviceType device) override;
+  int32_t SetRecordingDevice(uint16_t index) override;
+  int32_t SetRecordingDevice(
+      AudioDeviceModule::WindowsDeviceType device) override;
+
+  // Audio transport initialization
+  int32_t PlayoutIsAvailable(bool& available) override;
+  int32_t InitPlayout() override;
+  bool PlayoutIsInitialized() const override;
+  int32_t RecordingIsAvailable(bool& available) override;
+  int32_t InitRecording() override;
+  bool RecordingIsInitialized() const override;
+
+  // Audio transport control
+  int32_t StartPlayout() override;
+  int32_t StopPlayout() override;
+  bool Playing() const override;
+  int32_t StartRecording() override;
+  int32_t StopRecording() override;
+  bool Recording() const override;
+
+  // Audio mixer initialization
+  int32_t InitSpeaker() override;
+  bool SpeakerIsInitialized() const override;
+  int32_t InitMicrophone() override;
+  bool MicrophoneIsInitialized() const override;
+
+  // Speaker volume controls
+  int32_t SpeakerVolumeIsAvailable(bool& available) override;
+  int32_t SetSpeakerVolume(uint32_t volume) override;
+  int32_t SpeakerVolume(uint32_t& volume) const override;
+  int32_t MaxSpeakerVolume(uint32_t& maxVolume) const override;
+  int32_t MinSpeakerVolume(uint32_t& minVolume) const override;
+
+  // Microphone volume controls
+  int32_t MicrophoneVolumeIsAvailable(bool& available) override;
+  int32_t SetMicrophoneVolume(uint32_t volume) override;
+  int32_t MicrophoneVolume(uint32_t& volume) const override;
+  int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const override;
+  int32_t MinMicrophoneVolume(uint32_t& minVolume) const override;
+
+  // Speaker mute control
+  int32_t SpeakerMuteIsAvailable(bool& available) override;
+  int32_t SetSpeakerMute(bool enable) override;
+  int32_t SpeakerMute(bool& enabled) const override;
+
+  // Microphone mute control
+  int32_t MicrophoneMuteIsAvailable(bool& available) override;
+  int32_t SetMicrophoneMute(bool enable) override;
+  int32_t MicrophoneMute(bool& enabled) const override;
+
+  // Stereo support
+  int32_t StereoPlayoutIsAvailable(bool& available) override;
+  int32_t SetStereoPlayout(bool enable) override;
+  int32_t StereoPlayout(bool& enabled) const override;
+  int32_t StereoRecordingIsAvailable(bool& available) override;
+  int32_t SetStereoRecording(bool enable) override;
+  int32_t StereoRecording(bool& enabled) const override;
+
+  // Delay information and control
+  int32_t PlayoutDelay(uint16_t& delayMS) const override;
+
+  void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer) override;
+};
+
+}  // namespace webrtc
+
+#endif  // AUDIO_DEVICE_AUDIO_DEVICE_DUMMY_H_
diff --git a/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device.cc b/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device.cc
new file mode 100644
index 0000000000..8c10ae4186
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device.cc
@@ -0,0 +1,508 @@
+/*
+ *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/audio_device/dummy/file_audio_device.h"
+
+#include <string.h>
+
+#include "absl/strings/string_view.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/logging.h"
+#include "rtc_base/platform_thread.h"
+#include "rtc_base/time_utils.h"
+#include "system_wrappers/include/sleep.h"
+
+namespace webrtc {
+
+const int kRecordingFixedSampleRate = 48000;
+const size_t kRecordingNumChannels = 2;
+const int kPlayoutFixedSampleRate = 48000;
+const size_t kPlayoutNumChannels = 2;
+const size_t kPlayoutBufferSize =
+    kPlayoutFixedSampleRate / 100 * kPlayoutNumChannels * 2;
+const size_t kRecordingBufferSize =
+    kRecordingFixedSampleRate / 100 * kRecordingNumChannels * 2;
+
+FileAudioDevice::FileAudioDevice(absl::string_view inputFilename,
+                                 absl::string_view outputFilename)
+    : _ptrAudioBuffer(NULL),
+      _recordingBuffer(NULL),
+      _playoutBuffer(NULL),
+      _recordingFramesLeft(0),
+      _playoutFramesLeft(0),
+      _recordingBufferSizeIn10MS(0),
+      _recordingFramesIn10MS(0),
+      _playoutFramesIn10MS(0),
+      _playing(false),
+      _recording(false),
+      _lastCallPlayoutMillis(0),
+      _lastCallRecordMillis(0),
+      _outputFilename(outputFilename),
+      _inputFilename(inputFilename) {}
+
+FileAudioDevice::~FileAudioDevice() {}
+
+int32_t FileAudioDevice::ActiveAudioLayer(
+    AudioDeviceModule::AudioLayer& audioLayer) const {
+  return -1;
+}
+
+AudioDeviceGeneric::InitStatus FileAudioDevice::Init() {
+  return InitStatus::OK;
+}
+
+int32_t FileAudioDevice::Terminate() {
+  return 0;
+}
+
+bool FileAudioDevice::Initialized() const {
+  return true;
+}
+
+int16_t FileAudioDevice::PlayoutDevices() {
+  return 1;
+}
+
+int16_t FileAudioDevice::RecordingDevices() {
+  return 1;
+}
+
+int32_t FileAudioDevice::PlayoutDeviceName(uint16_t index,
+                                           char name[kAdmMaxDeviceNameSize],
+                                           char guid[kAdmMaxGuidSize]) {
+  const char* kName = "dummy_device";
+  const char* kGuid = "dummy_device_unique_id";
+  if (index < 1) {
+    memset(name, 0, kAdmMaxDeviceNameSize);
+    memset(guid, 0, kAdmMaxGuidSize);
+    memcpy(name, kName, strlen(kName));
+    memcpy(guid, kGuid, strlen(guid));
+    return 0;
+  }
+  return -1;
+}
+
+int32_t FileAudioDevice::RecordingDeviceName(uint16_t index,
+                                             char name[kAdmMaxDeviceNameSize],
+                                             char guid[kAdmMaxGuidSize]) {
+  const char* kName = "dummy_device";
+  const char* kGuid = "dummy_device_unique_id";
+  if (index < 1) {
+    memset(name, 0, kAdmMaxDeviceNameSize);
+    memset(guid, 0, kAdmMaxGuidSize);
+    memcpy(name, kName, strlen(kName));
+    memcpy(guid, kGuid, strlen(guid));
+    return 0;
+  }
+  return -1;
+}
+
+int32_t FileAudioDevice::SetPlayoutDevice(uint16_t index) {
+  if (index == 0) {
+    _playout_index = index;
+    return 0;
+  }
+  return -1;
+}
+
+int32_t FileAudioDevice::SetPlayoutDevice(
+    AudioDeviceModule::WindowsDeviceType device) {
+  return -1;
+}
+
+int32_t FileAudioDevice::SetRecordingDevice(uint16_t index) {
+  if (index == 0) {
+    _record_index = index;
+    return _record_index;
+  }
+  return -1;
+}
+
+int32_t FileAudioDevice::SetRecordingDevice(
+    AudioDeviceModule::WindowsDeviceType device) {
+  return -1;
+}
+
+int32_t FileAudioDevice::PlayoutIsAvailable(bool& available) {
+  if (_playout_index == 0) {
+    available = true;
+    return _playout_index;
+  }
+  available = false;
+  return -1;
+}
+
+int32_t FileAudioDevice::InitPlayout() {
+  MutexLock lock(&mutex_);
+
+  if (_playing) {
+    return -1;
+  }
+
+  _playoutFramesIn10MS = static_cast<size_t>(kPlayoutFixedSampleRate / 100);
+
+  if (_ptrAudioBuffer) {
+    // Update webrtc audio buffer with the selected parameters
+    _ptrAudioBuffer->SetPlayoutSampleRate(kPlayoutFixedSampleRate);
+    _ptrAudioBuffer->SetPlayoutChannels(kPlayoutNumChannels);
+  }
+  return 0;
+}
+
+bool FileAudioDevice::PlayoutIsInitialized() const {
+  return _playoutFramesIn10MS != 0;
+}
+
+int32_t FileAudioDevice::RecordingIsAvailable(bool& available) {
+  if (_record_index == 0) {
+    available = true;
+    return _record_index;
+  }
+  available = false;
+  return -1;
+}
+
+int32_t FileAudioDevice::InitRecording() {
+  MutexLock lock(&mutex_);
+
+  if (_recording) {
+    return -1;
+  }
+
+  _recordingFramesIn10MS = static_cast<size_t>(kRecordingFixedSampleRate / 100);
+
+  if (_ptrAudioBuffer) {
+    _ptrAudioBuffer->SetRecordingSampleRate(kRecordingFixedSampleRate);
+    _ptrAudioBuffer->SetRecordingChannels(kRecordingNumChannels);
+  }
+  return 0;
+}
+
+bool FileAudioDevice::RecordingIsInitialized() const {
+  return _recordingFramesIn10MS != 0;
+}
+
+int32_t FileAudioDevice::StartPlayout() {
+  if (_playing) {
+    return 0;
+  }
+
+  _playing = true;
+  _playoutFramesLeft = 0;
+
+  if (!_playoutBuffer) {
+    _playoutBuffer = new int8_t[kPlayoutBufferSize];
+  }
+  if (!_playoutBuffer) {
+    _playing = false;
+    return -1;
+  }
+
+  // PLAYOUT
+  if (!_outputFilename.empty()) {
+    _outputFile = FileWrapper::OpenWriteOnly(_outputFilename);
+    if (!_outputFile.is_open()) {
+      RTC_LOG(LS_ERROR) << "Failed to open playout file: " << _outputFilename;
+      _playing = false;
+      delete[] _playoutBuffer;
+      _playoutBuffer = NULL;
+      return -1;
+    }
+  }
+
+  _ptrThreadPlay = rtc::PlatformThread::SpawnJoinable(
+      [this] {
+        while (PlayThreadProcess()) {
+        }
+      },
+      "webrtc_audio_module_play_thread",
+      rtc::ThreadAttributes().SetPriority(rtc::ThreadPriority::kRealtime));
+
+  RTC_LOG(LS_INFO) << "Started playout capture to output file: "
+                   << _outputFilename;
+  return 0;
+}
+
+int32_t FileAudioDevice::StopPlayout() {
+  {
+    MutexLock lock(&mutex_);
+    _playing = false;
+  }
+
+  // stop playout thread first
+  if (!_ptrThreadPlay.empty())
+    _ptrThreadPlay.Finalize();
+
+  MutexLock lock(&mutex_);
+
+  _playoutFramesLeft = 0;
+  delete[] _playoutBuffer;
+  _playoutBuffer = NULL;
+  _outputFile.Close();
+
+  RTC_LOG(LS_INFO) << "Stopped playout capture to output file: "
+                   << _outputFilename;
+  return 0;
+}
+
+bool FileAudioDevice::Playing() const {
+  return _playing;
+}
+
+int32_t FileAudioDevice::StartRecording() {
+  _recording = true;
+
+  // Make sure we only create the buffer once.
+  _recordingBufferSizeIn10MS =
+      _recordingFramesIn10MS * kRecordingNumChannels * 2;
+  if (!_recordingBuffer) {
+    _recordingBuffer = new int8_t[_recordingBufferSizeIn10MS];
+  }
+
+  if (!_inputFilename.empty()) {
+    _inputFile = FileWrapper::OpenReadOnly(_inputFilename);
+    if (!_inputFile.is_open()) {
+      RTC_LOG(LS_ERROR) << "Failed to open audio input file: "
+                        << _inputFilename;
+      _recording = false;
+      delete[] _recordingBuffer;
+      _recordingBuffer = NULL;
+      return -1;
+    }
+  }
+
+  _ptrThreadRec = rtc::PlatformThread::SpawnJoinable(
+      [this] {
+        while (RecThreadProcess()) {
+        }
+      },
+      "webrtc_audio_module_capture_thread",
+      rtc::ThreadAttributes().SetPriority(rtc::ThreadPriority::kRealtime));
+
+  RTC_LOG(LS_INFO) << "Started recording from input file: " << _inputFilename;
+
+  return 0;
+}
+
+int32_t FileAudioDevice::StopRecording() {
+  {
+    MutexLock lock(&mutex_);
+    _recording = false;
+  }
+
+  if (!_ptrThreadRec.empty())
+    _ptrThreadRec.Finalize();
+
+  MutexLock lock(&mutex_);
+  _recordingFramesLeft = 0;
+  if (_recordingBuffer) {
+    delete[] _recordingBuffer;
+    _recordingBuffer = NULL;
+  }
+  _inputFile.Close();
+
+  RTC_LOG(LS_INFO) << "Stopped recording from input file: " << _inputFilename;
+  return 0;
+}
+
+bool FileAudioDevice::Recording() const {
+  return _recording;
+}
+
+int32_t FileAudioDevice::InitSpeaker() {
+  return -1;
+}
+
+bool FileAudioDevice::SpeakerIsInitialized() const {
+  return false;
+}
+
+int32_t FileAudioDevice::InitMicrophone() {
+  return 0;
+}
+
+bool FileAudioDevice::MicrophoneIsInitialized() const {
+  return true;
+}
+
+int32_t FileAudioDevice::SpeakerVolumeIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t FileAudioDevice::SetSpeakerVolume(uint32_t volume) {
+  return -1;
+}
+
+int32_t FileAudioDevice::SpeakerVolume(uint32_t& volume) const {
+  return -1;
+}
+
+int32_t FileAudioDevice::MaxSpeakerVolume(uint32_t& maxVolume) const {
+  return -1;
+}
+
+int32_t FileAudioDevice::MinSpeakerVolume(uint32_t& minVolume) const {
+  return -1;
+}
+
+int32_t FileAudioDevice::MicrophoneVolumeIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t FileAudioDevice::SetMicrophoneVolume(uint32_t volume) {
+  return -1;
+}
+
+int32_t FileAudioDevice::MicrophoneVolume(uint32_t& volume) const {
+  return -1;
+}
+
+int32_t FileAudioDevice::MaxMicrophoneVolume(uint32_t& maxVolume) const {
+  return -1;
+}
+
+int32_t FileAudioDevice::MinMicrophoneVolume(uint32_t& minVolume) const {
+  return -1;
+}
+
+int32_t FileAudioDevice::SpeakerMuteIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t FileAudioDevice::SetSpeakerMute(bool enable) {
+  return -1;
+}
+
+int32_t FileAudioDevice::SpeakerMute(bool& enabled) const {
+  return -1;
+}
+
+int32_t FileAudioDevice::MicrophoneMuteIsAvailable(bool& available) {
+  return -1;
+}
+
+int32_t FileAudioDevice::SetMicrophoneMute(bool enable) {
+  return -1;
+}
+
+int32_t FileAudioDevice::MicrophoneMute(bool& enabled) const {
+  return -1;
+}
+
+int32_t FileAudioDevice::StereoPlayoutIsAvailable(bool& available) {
+  available = true;
+  return 0;
+}
+int32_t FileAudioDevice::SetStereoPlayout(bool enable) {
+  return 0;
+}
+
+int32_t FileAudioDevice::StereoPlayout(bool& enabled) const {
+  enabled = true;
+  return 0;
+}
+
+int32_t FileAudioDevice::StereoRecordingIsAvailable(bool& available) {
+  available = true;
+  return 0;
+}
+
+int32_t FileAudioDevice::SetStereoRecording(bool enable) {
+  return 0;
+}
+
+int32_t FileAudioDevice::StereoRecording(bool& enabled) const {
+  enabled = true;
+  return 0;
+}
+
+int32_t FileAudioDevice::PlayoutDelay(uint16_t& delayMS) const {
+  return 0;
+}
+
+void FileAudioDevice::AttachAudioBuffer(AudioDeviceBuffer* audioBuffer) {
+  MutexLock lock(&mutex_);
+
+  _ptrAudioBuffer = audioBuffer;
+
+  // Inform the AudioBuffer about default settings for this implementation.
+  // Set all values to zero here since the actual settings will be done by
+  // InitPlayout and InitRecording later.
+  _ptrAudioBuffer->SetRecordingSampleRate(0);
+  _ptrAudioBuffer->SetPlayoutSampleRate(0);
+  _ptrAudioBuffer->SetRecordingChannels(0);
+  _ptrAudioBuffer->SetPlayoutChannels(0);
+}
+
+bool FileAudioDevice::PlayThreadProcess() {
+  if (!_playing) {
+    return false;
+  }
+  int64_t currentTime = rtc::TimeMillis();
+  mutex_.Lock();
+
+  if (_lastCallPlayoutMillis == 0 ||
+      currentTime - _lastCallPlayoutMillis >= 10) {
+    mutex_.Unlock();
+    _ptrAudioBuffer->RequestPlayoutData(_playoutFramesIn10MS);
+    mutex_.Lock();
+
+    _playoutFramesLeft = _ptrAudioBuffer->GetPlayoutData(_playoutBuffer);
+    RTC_DCHECK_EQ(_playoutFramesIn10MS, _playoutFramesLeft);
+    if (_outputFile.is_open()) {
+      _outputFile.Write(_playoutBuffer, kPlayoutBufferSize);
+    }
+    _lastCallPlayoutMillis = currentTime;
+  }
+  _playoutFramesLeft = 0;
+  mutex_.Unlock();
+
+  int64_t deltaTimeMillis = rtc::TimeMillis() - currentTime;
+  if (deltaTimeMillis < 10) {
+    SleepMs(10 - deltaTimeMillis);
+  }
+
+  return true;
+}
+
+bool FileAudioDevice::RecThreadProcess() {
+  if (!_recording) {
+    return false;
+  }
+
+  int64_t currentTime = rtc::TimeMillis();
+  mutex_.Lock();
+
+  if (_lastCallRecordMillis == 0 || currentTime - _lastCallRecordMillis >= 10) {
+    if (_inputFile.is_open()) {
+      if (_inputFile.Read(_recordingBuffer, kRecordingBufferSize) > 0) {
+        _ptrAudioBuffer->SetRecordedBuffer(_recordingBuffer,
+                                           _recordingFramesIn10MS);
+      } else {
+        _inputFile.Rewind();
+      }
+      _lastCallRecordMillis = currentTime;
+      mutex_.Unlock();
+      _ptrAudioBuffer->DeliverRecordedData();
+      mutex_.Lock();
+    }
+  }
+
+  mutex_.Unlock();
+
+  int64_t deltaTimeMillis = rtc::TimeMillis() - currentTime;
+  if (deltaTimeMillis < 10) {
+    SleepMs(10 - deltaTimeMillis);
+  }
+
+  return true;
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device.h b/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device.h
new file mode 100644
index 0000000000..27979933f2
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device.h
@@ -0,0 +1,163 @@
+/*
+ *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef AUDIO_DEVICE_FILE_AUDIO_DEVICE_H_
+#define AUDIO_DEVICE_FILE_AUDIO_DEVICE_H_
+
+#include <stdio.h>
+
+#include <memory>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "modules/audio_device/audio_device_generic.h"
+#include "rtc_base/platform_thread.h"
+#include "rtc_base/synchronization/mutex.h"
+#include "rtc_base/system/file_wrapper.h"
+#include "rtc_base/time_utils.h"
+
+namespace webrtc {
+
+// This is a fake audio device which plays audio from a file as its microphone
+// and plays out into a file.
+class FileAudioDevice : public AudioDeviceGeneric {
+ public:
+  // Constructs a file audio device with `id`. It will read audio from
+  // `inputFilename` and record output audio to `outputFilename`.
+  //
+  // The input file should be a readable 48k stereo raw file, and the output
+  // file should point to a writable location. The output format will also be
+  // 48k stereo raw audio.
+  FileAudioDevice(absl::string_view inputFilename,
+                  absl::string_view outputFilename);
+  virtual ~FileAudioDevice();
+
+  // Retrieve the currently utilized audio layer
+  int32_t ActiveAudioLayer(
+      AudioDeviceModule::AudioLayer& audioLayer) const override;
+
+  // Main initializaton and termination
+  InitStatus Init() override;
+  int32_t Terminate() override;
+  bool Initialized() const override;
+
+  // Device enumeration
+  int16_t PlayoutDevices() override;
+  int16_t RecordingDevices() override;
+  int32_t PlayoutDeviceName(uint16_t index,
+                            char name[kAdmMaxDeviceNameSize],
+                            char guid[kAdmMaxGuidSize]) override;
+  int32_t RecordingDeviceName(uint16_t index,
+                              char name[kAdmMaxDeviceNameSize],
+                              char guid[kAdmMaxGuidSize]) override;
+
+  // Device selection
+  int32_t SetPlayoutDevice(uint16_t index) override;
+  int32_t SetPlayoutDevice(
+      AudioDeviceModule::WindowsDeviceType device) override;
+  int32_t SetRecordingDevice(uint16_t index) override;
+  int32_t SetRecordingDevice(
+      AudioDeviceModule::WindowsDeviceType device) override;
+
+  // Audio transport initialization
+  int32_t PlayoutIsAvailable(bool& available) override;
+  int32_t InitPlayout() override;
+  bool PlayoutIsInitialized() const override;
+  int32_t RecordingIsAvailable(bool& available) override;
+  int32_t InitRecording() override;
+  bool RecordingIsInitialized() const override;
+
+  // Audio transport control
+  int32_t StartPlayout() override;
+  int32_t StopPlayout() override;
+  bool Playing() const override;
+  int32_t StartRecording() override;
+  int32_t StopRecording() override;
+  bool Recording() const override;
+
+  // Audio mixer initialization
+  int32_t InitSpeaker() override;
+  bool SpeakerIsInitialized() const override;
+  int32_t InitMicrophone() override;
+  bool MicrophoneIsInitialized() const override;
+
+  // Speaker volume controls
+  int32_t SpeakerVolumeIsAvailable(bool& available) override;
+  int32_t SetSpeakerVolume(uint32_t volume) override;
+  int32_t SpeakerVolume(uint32_t& volume) const override;
+  int32_t MaxSpeakerVolume(uint32_t& maxVolume) const override;
+  int32_t MinSpeakerVolume(uint32_t& minVolume) const override;
+
+  // Microphone volume controls
+  int32_t MicrophoneVolumeIsAvailable(bool& available) override;
+  int32_t SetMicrophoneVolume(uint32_t volume) override;
+  int32_t MicrophoneVolume(uint32_t& volume) const override;
+  int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const override;
+  int32_t MinMicrophoneVolume(uint32_t& minVolume) const override;
+
+  // Speaker mute control
+  int32_t SpeakerMuteIsAvailable(bool& available) override;
+  int32_t SetSpeakerMute(bool enable) override;
+  int32_t SpeakerMute(bool& enabled) const override;
+
+  // Microphone mute control
+  int32_t MicrophoneMuteIsAvailable(bool& available) override;
+  int32_t SetMicrophoneMute(bool enable) override;
+  int32_t MicrophoneMute(bool& enabled) const override;
+
+  // Stereo support
+  int32_t StereoPlayoutIsAvailable(bool& available) override;
+  int32_t SetStereoPlayout(bool enable) override;
+  int32_t StereoPlayout(bool& enabled) const override;
+  int32_t StereoRecordingIsAvailable(bool& available) override;
+  int32_t SetStereoRecording(bool enable) override;
+  int32_t StereoRecording(bool& enabled) const override;
+
+  // Delay information and control
+  int32_t PlayoutDelay(uint16_t& delayMS) const override;
+
+  void AttachAudioBuffer(AudioDeviceBuffer* audioBuffer) override;
+
+ private:
+  static void RecThreadFunc(void*);
+  static void PlayThreadFunc(void*);
+  bool RecThreadProcess();
+  bool PlayThreadProcess();
+
+  int32_t _playout_index;
+  int32_t _record_index;
+  AudioDeviceBuffer* _ptrAudioBuffer;
+  int8_t* _recordingBuffer;  // In bytes.
+  int8_t* _playoutBuffer;    // In bytes.
+  uint32_t _recordingFramesLeft;
+  uint32_t _playoutFramesLeft;
+  Mutex mutex_;
+
+  size_t _recordingBufferSizeIn10MS;
+  size_t _recordingFramesIn10MS;
+  size_t _playoutFramesIn10MS;
+
+  rtc::PlatformThread _ptrThreadRec;
+  rtc::PlatformThread _ptrThreadPlay;
+
+  bool _playing;
+  bool _recording;
+  int64_t _lastCallPlayoutMillis;
+  int64_t _lastCallRecordMillis;
+
+  FileWrapper _outputFile;
+  FileWrapper _inputFile;
+  std::string _outputFilename;
+  std::string _inputFilename;
+};
+
+}  // namespace webrtc
+
+#endif  // AUDIO_DEVICE_FILE_AUDIO_DEVICE_H_
diff --git a/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device_factory.cc b/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device_factory.cc
new file mode 100644
index 0000000000..8c41111478
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device_factory.cc
@@ -0,0 +1,62 @@
+/*
+ *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/audio_device/dummy/file_audio_device_factory.h"
+
+#include <stdio.h>
+
+#include <cstdlib>
+
+#include "absl/strings/string_view.h"
+#include "modules/audio_device/dummy/file_audio_device.h"
+#include "rtc_base/logging.h"
+#include "rtc_base/string_utils.h"
+
+namespace webrtc {
+
+bool FileAudioDeviceFactory::_isConfigured = false;
+char FileAudioDeviceFactory::_inputAudioFilename[MAX_FILENAME_LEN] = "";
+char FileAudioDeviceFactory::_outputAudioFilename[MAX_FILENAME_LEN] = "";
+
+FileAudioDevice* FileAudioDeviceFactory::CreateFileAudioDevice() {
+  // Bail out here if the files haven't been set explicitly.
+  // audio_device_impl.cc should then fall back to dummy audio.
+  if (!_isConfigured) {
+    RTC_LOG(LS_WARNING)
+        << "WebRTC configured with WEBRTC_DUMMY_FILE_DEVICES but "
+           "no device files supplied. Will fall back to dummy "
+           "audio.";
+
+    return nullptr;
+  }
+  return new FileAudioDevice(_inputAudioFilename, _outputAudioFilename);
+}
+
+void FileAudioDeviceFactory::SetFilenamesToUse(
+    absl::string_view inputAudioFilename,
+    absl::string_view outputAudioFilename) {
+#ifdef WEBRTC_DUMMY_FILE_DEVICES
+  RTC_DCHECK_LT(inputAudioFilename.size(), MAX_FILENAME_LEN);
+  RTC_DCHECK_LT(outputAudioFilename.size(), MAX_FILENAME_LEN);
+
+  // Copy the strings since we don't know the lifetime of the input pointers.
+  rtc::strcpyn(_inputAudioFilename, MAX_FILENAME_LEN, inputAudioFilename);
+  rtc::strcpyn(_outputAudioFilename, MAX_FILENAME_LEN, outputAudioFilename);
+  _isConfigured = true;
+#else
+  // Sanity: must be compiled with the right define to run this.
+  printf(
+      "Trying to use dummy file devices, but is not compiled "
+      "with WEBRTC_DUMMY_FILE_DEVICES. Bailing out.\n");
+  std::exit(1);
+#endif
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device_factory.h b/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device_factory.h
new file mode 100644
index 0000000000..18f9388f21
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_device/dummy/file_audio_device_factory.h
@@ -0,0 +1,44 @@
+/*
+ *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef AUDIO_DEVICE_FILE_AUDIO_DEVICE_FACTORY_H_
+#define AUDIO_DEVICE_FILE_AUDIO_DEVICE_FACTORY_H_
+
+#include <stdint.h>
+
+#include "absl/strings/string_view.h"
+
+namespace webrtc {
+
+class FileAudioDevice;
+
+// This class is used by audio_device_impl.cc when WebRTC is compiled with
+// WEBRTC_DUMMY_FILE_DEVICES. The application must include this file and set the
+// filenames to use before the audio device module is initialized. This is
+// intended for test tools which use the audio device module.
+class FileAudioDeviceFactory {
+ public:
+  static FileAudioDevice* CreateFileAudioDevice();
+
+  // The input file must be a readable 48k stereo raw file. The output
+  // file must be writable. The strings will be copied.
+  static void SetFilenamesToUse(absl::string_view inputAudioFilename,
+                                absl::string_view outputAudioFilename);
+
+ private:
+  enum : uint32_t { MAX_FILENAME_LEN = 512 };
+  static bool _isConfigured;
+  static char _inputAudioFilename[MAX_FILENAME_LEN];
+  static char _outputAudioFilename[MAX_FILENAME_LEN];
+};
+
+}  // namespace webrtc
+
+#endif  // AUDIO_DEVICE_FILE_AUDIO_DEVICE_FACTORY_H_