e475e750ac
* Support streaming zipformer CTC * test online zipformer2 CTC * Update doc of sherpa-onnx.cc * Add Python APIs for streaming zipformer2 ctc * Add Python API examples for streaming zipformer2 ctc * Swift API for streaming zipformer2 CTC * NodeJS API for streaming zipformer2 CTC * Kotlin API for streaming zipformer2 CTC * Golang API for streaming zipformer2 CTC * C# API for streaming zipformer2 CTC * Release v1.9.6
81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
// sherpa-onnx/csrc/online-zipformer2-ctc-model.h
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//
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// Copyright (c) 2023 Xiaomi Corporation
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#ifndef SHERPA_ONNX_CSRC_ONLINE_ZIPFORMER2_CTC_MODEL_H_
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#define SHERPA_ONNX_CSRC_ONLINE_ZIPFORMER2_CTC_MODEL_H_
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#include <memory>
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#include <utility>
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#include <vector>
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#if __ANDROID_API__ >= 9
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#include "android/asset_manager.h"
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#include "android/asset_manager_jni.h"
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#endif
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#include "onnxruntime_cxx_api.h" // NOLINT
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#include "sherpa-onnx/csrc/online-ctc-model.h"
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#include "sherpa-onnx/csrc/online-model-config.h"
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namespace sherpa_onnx {
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class OnlineZipformer2CtcModel : public OnlineCtcModel {
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public:
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explicit OnlineZipformer2CtcModel(const OnlineModelConfig &config);
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#if __ANDROID_API__ >= 9
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OnlineZipformer2CtcModel(AAssetManager *mgr, const OnlineModelConfig &config);
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#endif
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~OnlineZipformer2CtcModel() override;
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// A list of tensors.
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// See also
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// https://github.com/k2-fsa/icefall/pull/1413
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// and
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// https://github.com/k2-fsa/icefall/pull/1415
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std::vector<Ort::Value> GetInitStates() const override;
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std::vector<Ort::Value> StackStates(
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std::vector<std::vector<Ort::Value>> states) const override;
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std::vector<std::vector<Ort::Value>> UnStackStates(
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std::vector<Ort::Value> states) const override;
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/**
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*
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* @param x A 3-D tensor of shape (N, T, C). N has to be 1.
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* @param states It is from GetInitStates() or returned from this method.
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*
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* @return Return a list of tensors
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* - ans[0] contains log_probs, of shape (N, T, C)
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* - ans[1:] contains next_states
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*/
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std::vector<Ort::Value> Forward(
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Ort::Value x, std::vector<Ort::Value> states) const override;
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/** Return the vocabulary size of the model
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*/
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int32_t VocabSize() const override;
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/** Return an allocator for allocating memory
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*/
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OrtAllocator *Allocator() const override;
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// The model accepts this number of frames before subsampling as input
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int32_t ChunkLength() const override;
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// Similar to frame_shift in feature extractor, after processing
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// ChunkLength() frames, we advance by ChunkShift() frames
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// before we process the next chunk.
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int32_t ChunkShift() const override;
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private:
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class Impl;
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std::unique_ptr<Impl> impl_;
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};
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} // namespace sherpa_onnx
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#endif // SHERPA_ONNX_CSRC_ONLINE_ZIPFORMER2_CTC_MODEL_H_
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