Index: webrtc/modules/audio_processing/beamformer/array_util.cc |
diff --git a/webrtc/modules/audio_processing/beamformer/array_util.cc b/webrtc/modules/audio_processing/beamformer/array_util.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..c1c4066b0c1e581dd1b38216ba01ebbd172d2ad2 |
--- /dev/null |
+++ b/webrtc/modules/audio_processing/beamformer/array_util.cc |
@@ -0,0 +1,32 @@ |
+/* |
+ * Copyright (c) 2015 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 "webrtc/modules/audio_processing/beamformer/array_util.h" |
+ |
+#include <algorithm> |
+#include <limits> |
+ |
+#include "webrtc/base/checks.h" |
+ |
+namespace webrtc { |
+ |
+float GetMinimumSpacing(const std::vector<Point>& array_geometry) { |
+ RTC_CHECK_GT(array_geometry.size(), 1u); |
+ float mic_spacing = std::numeric_limits<float>::max(); |
+ for (size_t i = 0; i < (array_geometry.size() - 1); ++i) { |
+ for (size_t j = i + 1; j < array_geometry.size(); ++j) { |
+ mic_spacing = |
+ std::min(mic_spacing, Distance(array_geometry[i], array_geometry[j])); |
+ } |
+ } |
+ return mic_spacing; |
+} |
+ |
+} // namespace webrtc |