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Side by Side Diff: webrtc/modules/audio_mixer/sine_wave_generator.cc

Issue 2776113002: Send data from mixer to APM limiter more often. (Closed)
Patch Set: Conversions due to Win warnings. Created 3 years, 8 months ago
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1 /*
2 * Copyright (c) 2017 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 <cmath>
hlundin-webrtc 2017/03/29 07:22:56 math.h
aleloi 2017/03/29 10:56:11 Done.
12
13 #include "webrtc/base/safe_conversions.h"
14 #include "webrtc/modules/audio_mixer/sine_wave_generator.h"
hlundin-webrtc 2017/03/29 07:22:56 This one goes first of all.
aleloi 2017/03/29 10:56:11 Done.
15
16 namespace webrtc {
17
18 namespace {
19 constexpr float kPi = 3.14159265f;
20 } // namespace
21
22 void SineWaveGenerator::GenerateNextFrame(AudioFrame* frame) {
23 RTC_DCHECK(frame);
24 for (size_t i = 0; i < frame->samples_per_channel_; ++i) {
25 for (size_t ch = 0; ch < frame->num_channels_; ++ch) {
26 frame->data_[frame->num_channels_ * i + ch] =
27 rtc::saturated_cast<int16_t>(amplitude_ * sinf(phase_));
28 }
29 phase_ += wave_frequency_hz_ * 2 * kPi / frame->sample_rate_hz_;
30 }
31 }
32 } // namespace webrtc
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