blob: b07e1775394514c957059a864450dd23aafa5cae [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 "test/fuzzers/audio_processing_fuzzer_helper.h"
#include <algorithm>
#include <array>
#include <cmath>
#include <limits>
#include "api/audio/audio_frame.h"
#include "modules/audio_processing/include/audio_processing.h"
#include "rtc_base/checks.h"
namespace webrtc {
namespace {
void GenerateFloatFrame(test::FuzzDataHelper* fuzz_data,
size_t input_rate,
size_t num_channels,
float* const* float_frames) {
const size_t samples_per_input_channel =
rtc::CheckedDivExact(input_rate, 100ul);
RTC_DCHECK_LE(samples_per_input_channel, 480);
for (size_t i = 0; i < num_channels; ++i) {
for (size_t j = 0; j < samples_per_input_channel; ++j) {
float_frames[i][j] =
static_cast<float>(fuzz_data->ReadOrDefaultValue<int16_t>(0)) /
static_cast<float>(std::numeric_limits<int16_t>::max());
}
}
}
void GenerateFixedFrame(test::FuzzDataHelper* fuzz_data,
size_t input_rate,
size_t num_channels,
AudioFrame* fixed_frame) {
const size_t samples_per_input_channel =
rtc::CheckedDivExact(input_rate, 100ul);
fixed_frame->samples_per_channel_ = samples_per_input_channel;
fixed_frame->sample_rate_hz_ = input_rate;
fixed_frame->num_channels_ = num_channels;
RTC_DCHECK_LE(samples_per_input_channel * num_channels,
AudioFrame::kMaxDataSizeSamples);
for (size_t i = 0; i < samples_per_input_channel * num_channels; ++i) {
fixed_frame->mutable_data()[i] = fuzz_data->ReadOrDefaultValue<int16_t>(0);
}
}
} // namespace
void FuzzAudioProcessing(test::FuzzDataHelper* fuzz_data,
std::unique_ptr<AudioProcessing> apm) {
AudioFrame fixed_frame;
std::array<float, 480> float_frame1;
std::array<float, 480> float_frame2;
std::array<float* const, 2> float_frame_ptrs = {
&float_frame1[0], &float_frame2[0],
};
float* const* ptr_to_float_frames = &float_frame_ptrs[0];
using Rate = AudioProcessing::NativeRate;
const Rate rate_kinds[] = {Rate::kSampleRate8kHz, Rate::kSampleRate16kHz,
Rate::kSampleRate32kHz, Rate::kSampleRate48kHz};
// We may run out of fuzz data in the middle of a loop iteration. In
// that case, default values will be used for the rest of that
// iteration.
while (fuzz_data->CanReadBytes(1)) {
const bool is_float = fuzz_data->ReadOrDefaultValue(true);
// Decide input/output rate for this iteration.
const auto input_rate =
static_cast<size_t>(fuzz_data->SelectOneOf(rate_kinds));
const auto output_rate =
static_cast<size_t>(fuzz_data->SelectOneOf(rate_kinds));
const bool num_channels = fuzz_data->ReadOrDefaultValue(true) ? 2 : 1;
const uint8_t stream_delay = fuzz_data->ReadOrDefaultValue<uint8_t>(0);
// API call needed for AEC-2 and AEC-m to run.
apm->set_stream_delay_ms(stream_delay);
// Make the APM call depending on capture/render mode and float /
// fix interface.
const bool is_capture = fuzz_data->ReadOrDefaultValue(true);
// Fill the arrays with audio samples from the data.
int apm_return_code = AudioProcessing::Error::kNoError;
if (is_float) {
GenerateFloatFrame(fuzz_data, input_rate, num_channels,
ptr_to_float_frames);
if (is_capture) {
apm_return_code = apm->ProcessStream(
ptr_to_float_frames, StreamConfig(input_rate, num_channels),
StreamConfig(output_rate, num_channels), ptr_to_float_frames);
} else {
apm_return_code = apm->ProcessReverseStream(
ptr_to_float_frames, StreamConfig(input_rate, 1),
StreamConfig(output_rate, 1), ptr_to_float_frames);
}
} else {
GenerateFixedFrame(fuzz_data, input_rate, num_channels, &fixed_frame);
if (is_capture) {
apm_return_code = apm->ProcessStream(&fixed_frame);
} else {
apm_return_code = apm->ProcessReverseStream(&fixed_frame);
}
}
// Make calls to stats gathering functions to cover these
// codeways.
static_cast<void>(apm->GetStatistics());
static_cast<void>(apm->GetStatistics(true));
RTC_DCHECK_NE(apm_return_code, AudioProcessing::kBadDataLengthError);
}
}
} // namespace webrtc