wav-to-duration.cc
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// featbin/wav-to-duration.cc
// Copyright 2013 Daniel Povey
// See ../../COPYING for clarification regarding multiple authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing permissions and
// limitations under the License.
#include "base/kaldi-common.h"
#include "feat/feature-mfcc.h"
#include "feat/wave-reader.h"
#include "util/common-utils.h"
int main(int argc, char *argv[]) {
try {
using namespace kaldi;
const char *usage =
"Read wav files and output an archive consisting of a single float:\n"
"the duration of each one in seconds.\n"
"Usage: wav-to-duration [options...] <wav-rspecifier> <duration-wspecifier>\n"
"E.g.: wav-to-duration scp:wav.scp ark,t:-\n"
"See also: wav-copy extract-segments feat-to-len\n"
"Currently this program may output a lot of harmless warnings regarding\n"
"nonzero exit status of pipes\n";
bool read_entire_file = false;
ParseOptions po(usage);
po.Register("read-entire-file", &read_entire_file, "If true, use regular WaveHolder "
"instead of WaveInfoHolder to ensure the returned duration is correct.");
po.Read(argc, argv);
if (po.NumArgs() != 2) {
po.PrintUsage();
exit(1);
}
std::string wav_rspecifier = po.GetArg(1),
duration_wspecifier = po.GetArg(2);
double sum_duration = 0.0,
min_duration = std::numeric_limits<BaseFloat>::infinity(),
max_duration = 0;
int32 num_done = 0;
BaseFloatWriter duration_writer(duration_wspecifier);
if (read_entire_file) {
SequentialTableReader<WaveHolder> wav_reader(wav_rspecifier);
for (; !wav_reader.Done(); wav_reader.Next()) {
std::string key = wav_reader.Key();
const WaveData &wave_data = wav_reader.Value();
BaseFloat duration = wave_data.Duration();
duration_writer.Write(key, duration);
sum_duration += duration;
min_duration = std::min<double>(min_duration, duration);
max_duration = std::max<double>(max_duration, duration);
num_done++;
}
} else {
SequentialTableReader<WaveInfoHolder> wav_reader(wav_rspecifier);
for (; !wav_reader.Done(); wav_reader.Next()) {
std::string key = wav_reader.Key();
const WaveInfo &wave_info = wav_reader.Value();
if (wave_info.IsStreamed())
KALDI_ERR << "Error: member " << key << " has no duration in header. "
<< "Check the source, and/or try --read-entire-file.";
BaseFloat duration = wave_info.Duration();
duration_writer.Write(key, duration);
sum_duration += duration;
min_duration = std::min<double>(min_duration, duration);
max_duration = std::max<double>(max_duration, duration);
num_done++;
}
}
KALDI_LOG << "Printed duration for " << num_done << " audio files.";
if (num_done > 0) {
KALDI_LOG << "Mean duration was " << (sum_duration / num_done)
<< ", min and max durations were " << min_duration << ", "
<< max_duration;
}
return (num_done != 0 ? 0 : 1);
} catch(const std::exception &e) {
std::cerr << e.what();
return -1;
}
}