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1 /* | 1 /* |
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/common_audio/real_fourier_ooura.h" | 11 #include "webrtc/common_audio/real_fourier_ooura.h" |
12 | 12 |
13 #include <cmath> | 13 #include <cmath> |
14 #include <algorithm> | 14 #include <algorithm> |
15 | 15 |
16 #include "webrtc/base/checks.h" | |
17 #include "webrtc/common_audio/fft4g.h" | 16 #include "webrtc/common_audio/fft4g.h" |
| 17 #include "webrtc/rtc_base/checks.h" |
18 | 18 |
19 namespace webrtc { | 19 namespace webrtc { |
20 | 20 |
21 using std::complex; | 21 using std::complex; |
22 | 22 |
23 namespace { | 23 namespace { |
24 | 24 |
25 void Conjugate(complex<float>* array, size_t complex_length) { | 25 void Conjugate(complex<float>* array, size_t complex_length) { |
26 std::for_each(array, array + complex_length, | 26 std::for_each(array, array + complex_length, |
27 [=](complex<float>& v) { v = std::conj(v); }); | 27 [=](complex<float>& v) { v = std::conj(v); }); |
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76 } | 76 } |
77 | 77 |
78 WebRtc_rdft(length_, -1, dest, work_ip_.get(), work_w_.get()); | 78 WebRtc_rdft(length_, -1, dest, work_ip_.get(), work_w_.get()); |
79 | 79 |
80 // Ooura returns a scaled version. | 80 // Ooura returns a scaled version. |
81 const float scale = 2.0f / length_; | 81 const float scale = 2.0f / length_; |
82 std::for_each(dest, dest + length_, [scale](float& v) { v *= scale; }); | 82 std::for_each(dest, dest + length_, [scale](float& v) { v *= scale; }); |
83 } | 83 } |
84 | 84 |
85 } // namespace webrtc | 85 } // namespace webrtc |
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