40 lines
1.0 KiB
C++
40 lines
1.0 KiB
C++
// sherpa-onnx/csrc/online-ctc-fst-decoder.h
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//
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// Copyright (c) 2024 Xiaomi Corporation
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#ifndef SHERPA_ONNX_CSRC_ONLINE_CTC_FST_DECODER_H_
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#define SHERPA_ONNX_CSRC_ONLINE_CTC_FST_DECODER_H_
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#include <memory>
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#include <vector>
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#include "fst/fst.h"
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#include "sherpa-onnx/csrc/online-ctc-decoder.h"
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#include "sherpa-onnx/csrc/online-ctc-fst-decoder-config.h"
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namespace sherpa_onnx {
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class OnlineCtcFstDecoder : public OnlineCtcDecoder {
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public:
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OnlineCtcFstDecoder(const OnlineCtcFstDecoderConfig &config,
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int32_t blank_id);
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void Decode(Ort::Value log_probs,
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std::vector<OnlineCtcDecoderResult> *results,
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OnlineStream **ss = nullptr, int32_t n = 0) override;
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std::unique_ptr<kaldi_decoder::FasterDecoder> CreateFasterDecoder()
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const override;
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private:
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OnlineCtcFstDecoderConfig config_;
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kaldi_decoder::FasterDecoderOptions options_;
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std::unique_ptr<fst::Fst<fst::StdArc>> fst_;
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int32_t blank_id_ = 0;
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};
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} // namespace sherpa_onnx
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#endif // SHERPA_ONNX_CSRC_ONLINE_CTC_FST_DECODER_H_
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