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PaddleSpeech/speechx/examples/decoder/offline-decoder-main.cc

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// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
//
// 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// todo refactor, repalce with gtest
#include "base/flags.h"
#include "base/log.h"
#include "decoder/ctc_beam_search_decoder.h"
#include "kaldi/util/table-types.h"
#include "nnet/decodable.h"
#include "nnet/paddle_nnet.h"
DEFINE_string(feature_respecifier, "", "test nnet prob");
using kaldi::BaseFloat;
using kaldi::Matrix;
using std::vector;
// void SplitFeature(kaldi::Matrix<BaseFloat> feature,
// int32 chunk_size,
// std::vector<kaldi::Matrix<BaseFloat>* feature_chunks) {
//}
int main(int argc, char* argv[]) {
gflags::ParseCommandLineFlags(&argc, &argv, false);
google::InitGoogleLogging(argv[0]);
kaldi::SequentialBaseFloatMatrixReader feature_reader(
FLAGS_feature_respecifier);
// test nnet_output --> decoder result
int32 num_done = 0, num_err = 0;
ppspeech::CTCBeamSearchOptions opts;
ppspeech::CTCBeamSearch decoder(opts);
ppspeech::ModelOptions model_opts;
std::shared_ptr<ppspeech::PaddleNnet> nnet(
new ppspeech::PaddleNnet(model_opts));
std::shared_ptr<ppspeech::Decodable> decodable(
new ppspeech::Decodable(nnet));
// int32 chunk_size = 35;
decoder.InitDecoder();
for (; !feature_reader.Done(); feature_reader.Next()) {
string utt = feature_reader.Key();
const kaldi::Matrix<BaseFloat> feature = feature_reader.Value();
decodable->FeedFeatures(feature);
decoder.AdvanceDecode(decodable, 8);
decodable->InputFinished();
std::string result;
result = decoder.GetFinalBestPath();
KALDI_LOG << " the result of " << utt << " is " << result;
decodable->Reset();
++num_done;
}
KALDI_LOG << "Done " << num_done << " utterances, " << num_err
<< " with errors.";
return (num_done != 0 ? 0 : 1);
}