43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
// sherpa-onnx/csrc/offline-paraformer-decoder.h
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//
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// Copyright (c) 2023 Xiaomi Corporation
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#ifndef SHERPA_ONNX_CSRC_OFFLINE_PARAFORMER_DECODER_H_
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#define SHERPA_ONNX_CSRC_OFFLINE_PARAFORMER_DECODER_H_
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#include <vector>
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#include "onnxruntime_cxx_api.h" // NOLINT
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namespace sherpa_onnx {
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struct OfflineParaformerDecoderResult {
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/// The decoded token IDs
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std::vector<int64_t> tokens;
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// it contains the start time of each token in seconds
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//
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// len(timestamps) == len(tokens)
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std::vector<float> timestamps;
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};
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class OfflineParaformerDecoder {
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public:
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virtual ~OfflineParaformerDecoder() = default;
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/** Run beam search given the output from the paraformer model.
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*
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* @param log_probs A 3-D tensor of shape (N, T, vocab_size)
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* @param token_num A 1-D tensor of shape (N). token_num equals to T.
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*
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* @return Return a vector of size `N` containing the decoded results.
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*/
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virtual std::vector<OfflineParaformerDecoderResult> Decode(
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Ort::Value log_probs, Ort::Value token_num,
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Ort::Value us_cif_peak = Ort::Value(nullptr)) = 0;
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};
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} // namespace sherpa_onnx
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#endif // SHERPA_ONNX_CSRC_OFFLINE_PARAFORMER_DECODER_H_
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