blob: f298760fa7692376a15943ed5cf3fc33c8ae7ccd [file] [log] [blame]
/*
* Copyright (c) 2017 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 <bitset>
#include <string>
#include "api/audio/echo_canceller3_factory.h"
#include "modules/audio_processing/aec_dump/mock_aec_dump.h"
#include "modules/audio_processing/include/audio_processing.h"
#include "rtc_base/arraysize.h"
#include "rtc_base/numerics/safe_minmax.h"
#include "rtc_base/ptr_util.h"
#include "system_wrappers/include/field_trial_default.h"
#include "test/fuzzers/audio_processing_fuzzer_helper.h"
#include "test/fuzzers/fuzz_data_helper.h"
namespace webrtc {
namespace {
const std::string kFieldTrialNames[] = {
"WebRTC-Aec3TransparentModeKillSwitch",
"WebRTC-Aec3StationaryRenderImprovementsKillSwitch",
"WebRTC-Aec3EnforceDelayAfterRealignmentKillSwitch",
"WebRTC-Aec3UseShortDelayEstimatorWindow",
"WebRTC-Aec3ReverbBasedOnRenderKillSwitch",
"WebRTC-Aec3ReverbModellingKillSwitch",
"WebRTC-Aec3FilterAnalyzerPreprocessorKillSwitch",
"WebRTC-Aec3TransparencyImprovementsKillSwitch",
"WebRTC-Aec3SoftTransparentModeKillSwitch",
"WebRTC-Aec3OverrideEchoPathGainKillSwitch",
"WebRTC-Aec3ZeroExternalDelayHeadroomKillSwitch",
"WebRTC-Aec3DownSamplingFactor8KillSwitch",
"WebRTC-Aec3EnforceSkewHysteresis1",
"WebRTC-Aec3EnforceSkewHysteresis2"};
std::unique_ptr<AudioProcessing> CreateApm(test::FuzzDataHelper* fuzz_data,
std::string* field_trial_string) {
// Parse boolean values for optionally enabling different
// configurable public components of APM.
bool exp_agc = fuzz_data->ReadOrDefaultValue(true);
bool exp_ns = fuzz_data->ReadOrDefaultValue(true);
static_cast<void>(fuzz_data->ReadOrDefaultValue(true));
bool ef = fuzz_data->ReadOrDefaultValue(true);
bool raf = fuzz_data->ReadOrDefaultValue(true);
static_cast<void>(fuzz_data->ReadOrDefaultValue(true));
bool ie = fuzz_data->ReadOrDefaultValue(true);
bool red = fuzz_data->ReadOrDefaultValue(true);
bool hpf = fuzz_data->ReadOrDefaultValue(true);
bool aec3 = fuzz_data->ReadOrDefaultValue(true);
bool use_aec = fuzz_data->ReadOrDefaultValue(true);
bool use_aecm = fuzz_data->ReadOrDefaultValue(true);
bool use_agc = fuzz_data->ReadOrDefaultValue(true);
bool use_ns = fuzz_data->ReadOrDefaultValue(true);
bool use_le = fuzz_data->ReadOrDefaultValue(true);
bool use_vad = fuzz_data->ReadOrDefaultValue(true);
bool use_agc_limiter = fuzz_data->ReadOrDefaultValue(true);
bool use_agc2_limiter = fuzz_data->ReadOrDefaultValue(true);
// Read an int8 value, but don't let it be too large or small.
const float gain_controller2_gain_db =
rtc::SafeClamp<int>(fuzz_data->ReadOrDefaultValue<int8_t>(0), -50, 50);
constexpr size_t kNumFieldTrials = arraysize(kFieldTrialNames);
// This check ensures the uint16_t that is read has enough bits to cover all
// the field trials.
RTC_DCHECK_LE(kNumFieldTrials, 16);
std::bitset<kNumFieldTrials> field_trial_bitmask(
fuzz_data->ReadOrDefaultValue<uint16_t>(0));
for (size_t i = 0; i < kNumFieldTrials; ++i) {
if (field_trial_bitmask[i]) {
*field_trial_string += kFieldTrialNames[i] + "/Enabled/";
}
}
field_trial::InitFieldTrialsFromString(field_trial_string->c_str());
// Ignore a few bytes. Bytes from this segment will be used for
// future config flag changes. We assume 40 bytes is enough for
// configuring the APM.
constexpr size_t kSizeOfConfigSegment = 40;
RTC_DCHECK(kSizeOfConfigSegment >= fuzz_data->BytesRead());
static_cast<void>(
fuzz_data->ReadByteArray(kSizeOfConfigSegment - fuzz_data->BytesRead()));
// Filter out incompatible settings that lead to CHECK failures.
if (use_aecm && use_aec) {
return nullptr;
}
// Components can be enabled through webrtc::Config and
// webrtc::AudioProcessingConfig.
Config config;
std::unique_ptr<EchoControlFactory> echo_control_factory;
if (aec3) {
echo_control_factory.reset(new EchoCanceller3Factory());
}
config.Set<ExperimentalAgc>(new ExperimentalAgc(exp_agc));
config.Set<ExperimentalNs>(new ExperimentalNs(exp_ns));
config.Set<ExtendedFilter>(new ExtendedFilter(ef));
config.Set<RefinedAdaptiveFilter>(new RefinedAdaptiveFilter(raf));
config.Set<DelayAgnostic>(new DelayAgnostic(true));
config.Set<Intelligibility>(new Intelligibility(ie));
std::unique_ptr<AudioProcessing> apm(
AudioProcessingBuilder()
.SetEchoControlFactory(std::move(echo_control_factory))
.Create(config));
apm->AttachAecDump(
rtc::MakeUnique<testing::NiceMock<webrtc::test::MockAecDump>>());
webrtc::AudioProcessing::Config apm_config;
apm_config.residual_echo_detector.enabled = red;
apm_config.high_pass_filter.enabled = hpf;
apm_config.gain_controller2.enabled = use_agc2_limiter;
apm_config.gain_controller2.fixed_gain_db = gain_controller2_gain_db;
apm->ApplyConfig(apm_config);
apm->echo_cancellation()->Enable(use_aec);
apm->echo_control_mobile()->Enable(use_aecm);
apm->gain_control()->Enable(use_agc);
apm->noise_suppression()->Enable(use_ns);
apm->level_estimator()->Enable(use_le);
apm->voice_detection()->Enable(use_vad);
apm->gain_control()->enable_limiter(use_agc_limiter);
return apm;
}
} // namespace
void FuzzOneInput(const uint8_t* data, size_t size) {
test::FuzzDataHelper fuzz_data(rtc::ArrayView<const uint8_t>(data, size));
// This string must be in scope during execution, according to documentation
// for field_trial_default.h. Hence it's created here and not in CreateApm.
std::string field_trial_string = "";
auto apm = CreateApm(&fuzz_data, &field_trial_string);
if (apm) {
FuzzAudioProcessing(&fuzz_data, std::move(apm));
}
}
} // namespace webrtc