Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 86 insertions, 0 deletions

diff --git a/third_party/libwebrtc/modules/audio_processing/echo_control_mobile_impl.h b/third_party/libwebrtc/modules/audio_processing/echo_control_mobile_impl.h
new file mode 100644
index 0000000000..f7f2626a0e
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_processing/echo_control_mobile_impl.h
@@ -0,0 +1,86 @@
+/*
+ *  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 MODULES_AUDIO_PROCESSING_ECHO_CONTROL_MOBILE_IMPL_H_
+#define MODULES_AUDIO_PROCESSING_ECHO_CONTROL_MOBILE_IMPL_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <memory>
+#include <vector>
+
+#include "api/array_view.h"
+
+namespace webrtc {
+
+class AudioBuffer;
+
+// The acoustic echo control for mobile (AECM) component is a low complexity
+// robust option intended for use on mobile devices.
+class EchoControlMobileImpl {
+ public:
+  EchoControlMobileImpl();
+
+  ~EchoControlMobileImpl();
+
+  // Recommended settings for particular audio routes. In general, the louder
+  // the echo is expected to be, the higher this value should be set. The
+  // preferred setting may vary from device to device.
+  enum RoutingMode {
+    kQuietEarpieceOrHeadset,
+    kEarpiece,
+    kLoudEarpiece,
+    kSpeakerphone,
+    kLoudSpeakerphone
+  };
+
+  // Sets echo control appropriate for the audio routing `mode` on the device.
+  // It can and should be updated during a call if the audio routing changes.
+  int set_routing_mode(RoutingMode mode);
+  RoutingMode routing_mode() const;
+
+  // Comfort noise replaces suppressed background noise to maintain a
+  // consistent signal level.
+  int enable_comfort_noise(bool enable);
+  bool is_comfort_noise_enabled() const;
+
+  void ProcessRenderAudio(rtc::ArrayView<const int16_t> packed_render_audio);
+  int ProcessCaptureAudio(AudioBuffer* audio, int stream_delay_ms);
+
+  void Initialize(int sample_rate_hz,
+                  size_t num_reverse_channels,
+                  size_t num_output_channels);
+
+  static void PackRenderAudioBuffer(const AudioBuffer* audio,
+                                    size_t num_output_channels,
+                                    size_t num_channels,
+                                    std::vector<int16_t>* packed_buffer);
+
+  static size_t NumCancellersRequired(size_t num_output_channels,
+                                      size_t num_reverse_channels);
+
+ private:
+  class Canceller;
+  struct StreamProperties;
+
+  int Configure();
+
+  RoutingMode routing_mode_;
+  bool comfort_noise_enabled_;
+
+  std::vector<std::unique_ptr<Canceller>> cancellers_;
+  std::unique_ptr<StreamProperties> stream_properties_;
+  std::vector<std::array<int16_t, 160>> low_pass_reference_;
+  bool reference_copied_ = false;
+};
+}  // namespace webrtc
+
+#endif  // MODULES_AUDIO_PROCESSING_ECHO_CONTROL_MOBILE_IMPL_H_