1 files changed, 31 insertions, 0 deletions
diff --git a/third_party/libwebrtc/common_audio/window_generator.h b/third_party/libwebrtc/common_audio/window_generator.h
new file mode 100644
index 0000000000..c0a89c4f93
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+++ b/third_party/libwebrtc/common_audio/window_generator.h
@@ -0,0 +1,31 @@
+/*
+ *  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 COMMON_AUDIO_WINDOW_GENERATOR_H_
+#define COMMON_AUDIO_WINDOW_GENERATOR_H_
+
+#include <stddef.h>
+
+namespace webrtc {
+
+// Helper class with generators for various signal transform windows.
+class WindowGenerator {
+ public:
+  WindowGenerator() = delete;
+  WindowGenerator(const WindowGenerator&) = delete;
+  WindowGenerator& operator=(const WindowGenerator&) = delete;
+
+  static void Hanning(int length, float* window);
+  static void KaiserBesselDerived(float alpha, size_t length, float* window);
+};
+
+}  // namespace webrtc
+
+#endif  // COMMON_AUDIO_WINDOW_GENERATOR_H_