online-cuda-feature-pipeline.cc
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// cudafeat/online-cuda-feature-pipleine.cc
// Copyright 2013 Johns Hopkins University (author: 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 "cudafeat/online-cuda-feature-pipeline.h"
namespace kaldi {
OnlineCudaFeaturePipeline::OnlineCudaFeaturePipeline(
const OnlineNnet2FeaturePipelineConfig &config)
: info_(config), mfcc(NULL), ivector(NULL) {
if (info_.feature_type == "mfcc") {
mfcc = new CudaMfcc(info_.mfcc_opts);
}
if (info_.use_ivectors) {
OnlineIvectorExtractionConfig ivector_extraction_opts;
ReadConfigFromFile(config.ivector_extraction_config,
&ivector_extraction_opts);
info_.ivector_extractor_info.Init(ivector_extraction_opts);
// Only these ivector options are currently supported
ivector_extraction_opts.use_most_recent_ivector = true;
ivector_extraction_opts.greedy_ivector_extractor = true;
ivector = new IvectorExtractorFastCuda(ivector_extraction_opts);
}
}
OnlineCudaFeaturePipeline::~OnlineCudaFeaturePipeline() {
if (mfcc != NULL) delete mfcc;
if (ivector != NULL) delete ivector;
}
void OnlineCudaFeaturePipeline::ComputeFeatures(
const CuVectorBase<BaseFloat> &cu_wave, BaseFloat sample_freq,
CuMatrix<BaseFloat> *input_features,
CuVector<BaseFloat> *ivector_features) {
if (info_.feature_type == "mfcc") {
// MFCC
float vtln_warp = 1.0;
mfcc->ComputeFeatures(cu_wave, sample_freq, vtln_warp, input_features);
} else {
KALDI_ASSERT(false);
}
// Ivector
if (info_.use_ivectors && ivector_features != NULL) {
ivector->GetIvector(*input_features, ivector_features);
} else {
KALDI_ASSERT(false);
}
}
} // namespace kaldi