1 files changed, 52 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_processing/aec3/subtractor_output.h b/third_party/libwebrtc/modules/audio_processing/aec3/subtractor_output.h
new file mode 100644
index 0000000000..d2d12082c6
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_processing/aec3/subtractor_output.h
@@ -0,0 +1,52 @@
+/*
+ *  Copyright (c) 2017 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_AEC3_SUBTRACTOR_OUTPUT_H_
+#define MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_H_
+
+#include <array>
+
+#include "api/array_view.h"
+#include "modules/audio_processing/aec3/aec3_common.h"
+#include "modules/audio_processing/aec3/fft_data.h"
+
+namespace webrtc {
+
+// Stores the values being returned from the echo subtractor for a single
+// capture channel.
+struct SubtractorOutput {
+  SubtractorOutput();
+  ~SubtractorOutput();
+
+  std::array<float, kBlockSize> s_refined;
+  std::array<float, kBlockSize> s_coarse;
+  std::array<float, kBlockSize> e_refined;
+  std::array<float, kBlockSize> e_coarse;
+  FftData E_refined;
+  std::array<float, kFftLengthBy2Plus1> E2_refined;
+  std::array<float, kFftLengthBy2Plus1> E2_coarse;
+  float s2_refined = 0.f;
+  float s2_coarse = 0.f;
+  float e2_refined = 0.f;
+  float e2_coarse = 0.f;
+  float y2 = 0.f;
+  float s_refined_max_abs = 0.f;
+  float s_coarse_max_abs = 0.f;
+
+  // Reset the struct content.
+  void Reset();
+
+  // Updates the powers of the signals.
+  void ComputeMetrics(rtc::ArrayView<const float> y);
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_H_