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| 1 /* |
| 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #include "webrtc/modules/audio_processing/beamformer/array_util.h" |
| 12 |
| 13 #include <algorithm> |
| 14 #include <limits> |
| 15 |
| 16 #include "webrtc/base/checks.h" |
| 17 |
| 18 namespace webrtc { |
| 19 |
| 20 float GetMinimumSpacing(const std::vector<Point>& array_geometry) { |
| 21 RTC_CHECK_GT(array_geometry.size(), 1u); |
| 22 float mic_spacing = std::numeric_limits<float>::max(); |
| 23 for (size_t i = 0; i < (array_geometry.size() - 1); ++i) { |
| 24 for (size_t j = i + 1; j < array_geometry.size(); ++j) { |
| 25 mic_spacing = |
| 26 std::min(mic_spacing, Distance(array_geometry[i], array_geometry[j])); |
| 27 } |
| 28 } |
| 29 return mic_spacing; |
| 30 } |
| 31 |
| 32 } // namespace webrtc |
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