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enginex-mr_series-sherpa-onnx/sherpa-onnx/csrc/offline-recognizer-impl.h
Wei Kang 8562711252 Implement context biasing with a Aho Corasick automata (#145)
* Implement context graph

* Modify the interface to support context biasing

* Support context biasing in modified beam search; add python wrapper

* Support context biasing in python api example

* Minor fixes

* Fix context graph

* Minor fixes

* Fix tests

* Fix style

* Fix style

* Fix comments

* Minor fixes

* Add missing header

* Replace std::shared_ptr with std::unique_ptr for effciency

* Build graph in constructor

* Fix comments

* Minor fixes

* Fix docs
2023-06-16 14:26:36 +08:00

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1.0 KiB
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// sherpa-onnx/csrc/offline-recognizer-impl.h
//
// Copyright (c) 2023 Xiaomi Corporation
#ifndef SHERPA_ONNX_CSRC_OFFLINE_RECOGNIZER_IMPL_H_
#define SHERPA_ONNX_CSRC_OFFLINE_RECOGNIZER_IMPL_H_
#include <memory>
#include <vector>
#include "sherpa-onnx/csrc/macros.h"
#include "sherpa-onnx/csrc/offline-recognizer.h"
#include "sherpa-onnx/csrc/offline-stream.h"
namespace sherpa_onnx {
class OfflineRecognizerImpl {
public:
static std::unique_ptr<OfflineRecognizerImpl> Create(
const OfflineRecognizerConfig &config);
virtual ~OfflineRecognizerImpl() = default;
virtual std::unique_ptr<OfflineStream> CreateStream(
const std::vector<std::vector<int32_t>> &context_list) const {
SHERPA_ONNX_LOGE("Only transducer models support contextual biasing.");
exit(-1);
}
virtual std::unique_ptr<OfflineStream> CreateStream() const = 0;
virtual void DecodeStreams(OfflineStream **ss, int32_t n) const = 0;
};
} // namespace sherpa_onnx
#endif // SHERPA_ONNX_CSRC_OFFLINE_RECOGNIZER_IMPL_H_