18fcbcf48c
R=henrik.lundin@webrtc.org, turaj@webrtc.org Review URL: https://codereview.webrtc.org/1693823004 . Cr-Commit-Position: refs/heads/master@{#11713}
108 lines
3.8 KiB
C++
108 lines
3.8 KiB
C++
/*
|
|
* Copyright (c) 2014 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.
|
|
*/
|
|
|
|
//
|
|
// Command line tool for speech intelligibility enhancement. Provides for
|
|
// running and testing intelligibility_enhancer as an independent process.
|
|
// Use --help for options.
|
|
//
|
|
|
|
#include <sys/stat.h>
|
|
|
|
#include "gflags/gflags.h"
|
|
#include "testing/gtest/include/gtest/gtest.h"
|
|
#include "webrtc/base/criticalsection.h"
|
|
#include "webrtc/common_audio/include/audio_util.h"
|
|
#include "webrtc/common_audio/wav_file.h"
|
|
#include "webrtc/modules/audio_processing/audio_buffer.h"
|
|
#include "webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h"
|
|
#include "webrtc/modules/audio_processing/noise_suppression_impl.h"
|
|
|
|
using std::complex;
|
|
|
|
namespace webrtc {
|
|
namespace {
|
|
|
|
DEFINE_string(clear_file, "speech.wav", "Input file with clear speech.");
|
|
DEFINE_string(noise_file, "noise.wav", "Input file with noise data.");
|
|
DEFINE_string(out_file, "proc_enhanced.wav", "Enhanced output file.");
|
|
|
|
// void function for gtest
|
|
void void_main(int argc, char* argv[]) {
|
|
google::SetUsageMessage(
|
|
"\n\nInput files must be little-endian 16-bit signed raw PCM.\n");
|
|
google::ParseCommandLineFlags(&argc, &argv, true);
|
|
|
|
// Load settings and wav input.
|
|
struct stat in_stat, noise_stat;
|
|
ASSERT_EQ(stat(FLAGS_clear_file.c_str(), &in_stat), 0)
|
|
<< "Empty speech file.";
|
|
ASSERT_EQ(stat(FLAGS_noise_file.c_str(), &noise_stat), 0)
|
|
<< "Empty noise file.";
|
|
|
|
const size_t samples = std::min(in_stat.st_size, noise_stat.st_size) / 2;
|
|
|
|
WavReader in_file(FLAGS_clear_file);
|
|
std::vector<float> in_fpcm(samples);
|
|
in_file.ReadSamples(samples, &in_fpcm[0]);
|
|
FloatS16ToFloat(&in_fpcm[0], samples, &in_fpcm[0]);
|
|
|
|
WavReader noise_file(FLAGS_noise_file);
|
|
std::vector<float> noise_fpcm(samples);
|
|
noise_file.ReadSamples(samples, &noise_fpcm[0]);
|
|
FloatS16ToFloat(&noise_fpcm[0], samples, &noise_fpcm[0]);
|
|
|
|
// Run intelligibility enhancement.
|
|
IntelligibilityEnhancer enh(in_file.sample_rate(), in_file.num_channels());
|
|
rtc::CriticalSection crit;
|
|
NoiseSuppressionImpl ns(&crit);
|
|
ns.Initialize(noise_file.num_channels(), noise_file.sample_rate());
|
|
ns.Enable(true);
|
|
|
|
// Mirror real time APM chunk size. Duplicates chunk_length_ in
|
|
// IntelligibilityEnhancer.
|
|
size_t fragment_size = in_file.sample_rate() / 100;
|
|
AudioBuffer capture_audio(fragment_size, noise_file.num_channels(),
|
|
fragment_size, noise_file.num_channels(),
|
|
fragment_size);
|
|
StreamConfig stream_config(in_file.sample_rate(), noise_file.num_channels());
|
|
|
|
// Slice the input into smaller chunks, as the APM would do, and feed them
|
|
// through the enhancer.
|
|
float* clear_cursor = &in_fpcm[0];
|
|
float* noise_cursor = &noise_fpcm[0];
|
|
|
|
for (size_t i = 0; i < samples; i += fragment_size) {
|
|
capture_audio.CopyFrom(&noise_cursor, stream_config);
|
|
ns.AnalyzeCaptureAudio(&capture_audio);
|
|
ns.ProcessCaptureAudio(&capture_audio);
|
|
enh.SetCaptureNoiseEstimate(ns.NoiseEstimate());
|
|
enh.ProcessRenderAudio(&clear_cursor, in_file.sample_rate(),
|
|
in_file.num_channels());
|
|
clear_cursor += fragment_size;
|
|
noise_cursor += fragment_size;
|
|
}
|
|
|
|
FloatToFloatS16(&in_fpcm[0], samples, &in_fpcm[0]);
|
|
|
|
WavWriter out_file(FLAGS_out_file,
|
|
in_file.sample_rate(),
|
|
in_file.num_channels());
|
|
out_file.WriteSamples(&in_fpcm[0], samples);
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace webrtc
|
|
|
|
int main(int argc, char* argv[]) {
|
|
webrtc::void_main(argc, argv);
|
|
return 0;
|
|
}
|