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88 lines
2.5 KiB
88 lines
2.5 KiB
// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include "base/common.h"
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#include "frontend/feature_extractor_interface.h"
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#pragma once
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namespace ppspeech {
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class RawAudioCache : public FeatureExtractorInterface {
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public:
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explicit RawAudioCache(int buffer_size = kint16max);
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virtual void Accept(const kaldi::VectorBase<BaseFloat>& waves);
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virtual bool Read(kaldi::Vector<kaldi::BaseFloat>* waves);
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// the audio dim is 1
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virtual size_t Dim() const { return 1; }
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virtual void SetFinished() {
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std::lock_guard<std::mutex> lock(mutex_);
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finished_ = true;
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}
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virtual bool IsFinished() const { return finished_; }
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virtual void Reset() {
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start_ = 0;
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data_length_ = 0;
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finished_ = false;
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}
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private:
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std::vector<kaldi::BaseFloat> ring_buffer_;
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size_t start_;
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size_t data_length_;
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bool finished_;
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mutable std::mutex mutex_;
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std::condition_variable ready_feed_condition_;
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kaldi::int32 timeout_;
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DISALLOW_COPY_AND_ASSIGN(RawAudioCache);
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};
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// it is a datasource for testing different frontend module.
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// it accepts waves or feats.
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class RawDataCache : public FeatureExtractorInterface {
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public:
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explicit RawDataCache() { finished_ = false; }
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virtual void Accept(const kaldi::VectorBase<kaldi::BaseFloat>& inputs) {
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data_ = inputs;
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}
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virtual bool Read(kaldi::Vector<kaldi::BaseFloat>* feats) {
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if (data_.Dim() == 0) {
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return false;
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}
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(*feats) = data_;
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data_.Resize(0);
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return true;
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}
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virtual size_t Dim() const { return dim_; }
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virtual void SetFinished() { finished_ = true; }
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virtual bool IsFinished() const { return finished_; }
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void SetDim(int32 dim) { dim_ = dim; }
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virtual void Reset() {
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finished_ = true;
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}
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private:
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kaldi::Vector<kaldi::BaseFloat> data_;
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bool finished_;
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int32 dim_;
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DISALLOW_COPY_AND_ASSIGN(RawDataCache);
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};
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} // namespace ppspeech
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