offline-paraformer-decoder.h
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// sherpa-onnx/csrc/offline-paraformer-decoder.h
//
// Copyright (c) 2023 Xiaomi Corporation
#ifndef SHERPA_ONNX_CSRC_OFFLINE_PARAFORMER_DECODER_H_
#define SHERPA_ONNX_CSRC_OFFLINE_PARAFORMER_DECODER_H_
#include <vector>
#include "onnxruntime_cxx_api.h" // NOLINT
namespace sherpa_onnx {
struct OfflineParaformerDecoderResult {
/// The decoded token IDs
std::vector<int64_t> tokens;
};
class OfflineParaformerDecoder {
public:
virtual ~OfflineParaformerDecoder() = default;
/** Run beam search given the output from the paraformer model.
*
* @param log_probs A 3-D tensor of shape (N, T, vocab_size)
* @param token_num A 2-D tensor of shape (N, T). Its dtype is int64_t.
* log_probs[i].argmax(axis=-1) equals to token_num[i]
*
* @return Return a vector of size `N` containing the decoded results.
*/
virtual std::vector<OfflineParaformerDecoderResult> Decode(
Ort::Value log_probs, Ort::Value token_num) = 0;
};
} // namespace sherpa_onnx
#endif // SHERPA_ONNX_CSRC_OFFLINE_PARAFORMER_DECODER_H_