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a05ee82c4c
This CL adds the GainCurveApplier (GCA). It owns a FixedDigitalLevelEstimator (LE) and an InterpolatedGainCurve (IGC). The GCA uses the LE to compute the input signal level, looks up a gain from IGC and applies it on the signal. The other IGC and LE submodules were added in previous CLs [1] and [2]. This CL also turns on AGC2 in the APM fuzzer. [1] https://webrtc-review.googlesource.com/c/src/+/51920 [2] https://webrtc-review.googlesource.com/c/src/+/52381 Bug: webrtc:7949 Change-Id: Idb10cc3ca9d6d2e4ac5824cc3391ed8aa680f6cd Reviewed-on: https://webrtc-review.googlesource.com/54361 Commit-Queue: Alex Loiko <aleloi@webrtc.org> Reviewed-by: Sam Zackrisson <saza@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22103}
59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_processing/agc2/gain_curve_applier.h"
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#include "common_audio/include/audio_util.h"
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#include "modules/audio_processing/agc2/agc2_common.h"
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#include "modules/audio_processing/agc2/agc2_testing_common.h"
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#include "modules/audio_processing/agc2/vector_float_frame.h"
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#include "rtc_base/gunit.h"
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namespace webrtc {
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TEST(GainCurveApplier, GainCurveApplierShouldConstructAndRun) {
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const int sample_rate_hz = 48000;
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ApmDataDumper apm_data_dumper(0);
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GainCurveApplier gain_curve_applier(sample_rate_hz, &apm_data_dumper);
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VectorFloatFrame vectors_with_float_frame(1, sample_rate_hz / 100,
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kMaxAbsFloatS16Value);
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gain_curve_applier.Process(vectors_with_float_frame.float_frame_view());
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}
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TEST(GainCurveApplier, OutputVolumeAboveThreshold) {
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const int sample_rate_hz = 48000;
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const float input_level =
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(kMaxAbsFloatS16Value + DbfsToFloatS16(test::kLimiterMaxInputLevelDbFs)) /
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2.f;
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ApmDataDumper apm_data_dumper(0);
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GainCurveApplier gain_curve_applier(sample_rate_hz, &apm_data_dumper);
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// Give the level estimator time to adapt.
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for (int i = 0; i < 5; ++i) {
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VectorFloatFrame vectors_with_float_frame(1, sample_rate_hz / 100,
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input_level);
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gain_curve_applier.Process(vectors_with_float_frame.float_frame_view());
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}
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VectorFloatFrame vectors_with_float_frame(1, sample_rate_hz / 100,
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input_level);
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gain_curve_applier.Process(vectors_with_float_frame.float_frame_view());
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rtc::ArrayView<const float> channel =
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vectors_with_float_frame.float_frame_view().channel(0);
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for (const auto& sample : channel) {
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EXPECT_LT(0.9f * kMaxAbsFloatS16Value, sample);
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}
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}
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} // namespace webrtc
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