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59 lines
1.7 KiB
59 lines
1.7 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/audio/frontend_itf.h"
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namespace ppspeech {
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// Simulates audio/feature input, by returning data from a Vector.
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// This class is mostly meant to be used for online decoder testing using
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// pre-recorded audio/feature
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class DataCache : public FrontendInterface {
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public:
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DataCache() { finished_ = false; }
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// accept waves/feats
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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 void SetFinished() { finished_ = true; }
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virtual bool IsFinished() const { return finished_; }
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virtual size_t Dim() const { return dim_; }
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void SetDim(int32 dim) { dim_ = dim; }
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virtual void Reset() { finished_ = true; }
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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(DataCache);
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};
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} // namespace ppspeech
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