blob: 791bd55500b9844935ca83f102777cf4e9ca61bf [file] [log] [blame]
/*
* Copyright (c) 2016 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 <vector>
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/base/array_view.h"
#include "webrtc/modules/audio_processing/audio_buffer.h"
#include "webrtc/modules/audio_processing/voice_detection_impl.h"
#include "webrtc/modules/audio_processing/test/audio_buffer_tools.h"
#include "webrtc/modules/audio_processing/test/bitexactness_tools.h"
namespace webrtc {
namespace {
const int kNumFramesToProcess = 1000;
// Process one frame of data and produce the output.
void ProcessOneFrame(int sample_rate_hz,
AudioBuffer* audio_buffer,
VoiceDetectionImpl* voice_detection) {
if (sample_rate_hz > AudioProcessing::kSampleRate16kHz) {
audio_buffer->SplitIntoFrequencyBands();
}
voice_detection->ProcessCaptureAudio(audio_buffer);
}
// Processes a specified amount of frames, verifies the results and reports
// any errors.
void RunBitexactnessTest(int sample_rate_hz,
size_t num_channels,
int frame_size_ms_reference,
bool stream_has_voice_reference,
VoiceDetection::Likelihood likelihood_reference) {
rtc::CriticalSection crit_capture;
VoiceDetectionImpl voice_detection(&crit_capture);
voice_detection.Initialize(sample_rate_hz > 16000 ? 16000 : sample_rate_hz);
voice_detection.Enable(true);
int samples_per_channel = rtc::CheckedDivExact(sample_rate_hz, 100);
const StreamConfig capture_config(sample_rate_hz, num_channels, false);
AudioBuffer capture_buffer(
capture_config.num_frames(), capture_config.num_channels(),
capture_config.num_frames(), capture_config.num_channels(),
capture_config.num_frames());
test::InputAudioFile capture_file(
test::GetApmCaptureTestVectorFileName(sample_rate_hz));
std::vector<float> capture_input(samples_per_channel * num_channels);
for (int frame_no = 0; frame_no < kNumFramesToProcess; ++frame_no) {
ReadFloatSamplesFromStereoFile(samples_per_channel, num_channels,
&capture_file, capture_input);
test::CopyVectorToAudioBuffer(capture_config, capture_input,
&capture_buffer);
ProcessOneFrame(sample_rate_hz, &capture_buffer, &voice_detection);
}
int frame_size_ms = voice_detection.frame_size_ms();
bool stream_has_voice = voice_detection.stream_has_voice();
VoiceDetection::Likelihood likelihood = voice_detection.likelihood();
// Compare the outputs to the references.
EXPECT_EQ(frame_size_ms_reference, frame_size_ms);
EXPECT_EQ(stream_has_voice_reference, stream_has_voice);
EXPECT_EQ(likelihood_reference, likelihood);
}
const int kFrameSizeMsReference = 10;
const bool kStreamHasVoiceReference = true;
const VoiceDetection::Likelihood kLikelihoodReference =
VoiceDetection::kLowLikelihood;
} // namespace
TEST(VoiceDetectionBitExactnessTest, Mono8kHz) {
RunBitexactnessTest(8000, 1, kFrameSizeMsReference, kStreamHasVoiceReference,
kLikelihoodReference);
}
TEST(VoiceDetectionBitExactnessTest, Mono16kHz) {
RunBitexactnessTest(16000, 1, kFrameSizeMsReference, kStreamHasVoiceReference,
kLikelihoodReference);
}
TEST(VoiceDetectionBitExactnessTest, Mono32kHz) {
RunBitexactnessTest(32000, 1, kFrameSizeMsReference, kStreamHasVoiceReference,
kLikelihoodReference);
}
TEST(VoiceDetectionBitExactnessTest, Mono48kHz) {
RunBitexactnessTest(48000, 1, kFrameSizeMsReference, kStreamHasVoiceReference,
kLikelihoodReference);
}
TEST(VoiceDetectionBitExactnessTest, Stereo8kHz) {
RunBitexactnessTest(8000, 2, kFrameSizeMsReference, kStreamHasVoiceReference,
kLikelihoodReference);
}
TEST(VoiceDetectionBitExactnessTest, Stereo16kHz) {
RunBitexactnessTest(16000, 2, kFrameSizeMsReference, kStreamHasVoiceReference,
kLikelihoodReference);
}
TEST(VoiceDetectionBitExactnessTest, Stereo32kHz) {
RunBitexactnessTest(32000, 2, kFrameSizeMsReference, kStreamHasVoiceReference,
kLikelihoodReference);
}
TEST(VoiceDetectionBitExactnessTest, Stereo48kHz) {
RunBitexactnessTest(48000, 2, kFrameSizeMsReference, kStreamHasVoiceReference,
kLikelihoodReference);
}
} // namespace webrtc