support streaming zipformer2 (#185)

Co-authored-by: danfu <danfu@tencent.com>
2023-06-26 11:09:43 +08:00
parent 157b6b801b
commit 1c3dac9001
4 changed files with 578 additions and 0 deletions
--- a/sherpa-onnx/csrc/online-zipformer2-transducer-model.h
+++ b/sherpa-onnx/csrc/online-zipformer2-transducer-model.h
@@ -0,0 +1,109 @@
+// sherpa-onnx/csrc/online-zipformer2-transducer-model.h
+//
+// Copyright (c)  2023  Xiaomi Corporation
+#ifndef SHERPA_ONNX_CSRC_ONLINE_ZIPFORMER2_TRANSDUCER_MODEL_H_
+#define SHERPA_ONNX_CSRC_ONLINE_ZIPFORMER2_TRANSDUCER_MODEL_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#if __ANDROID_API__ >= 9
+#include "android/asset_manager.h"
+#include "android/asset_manager_jni.h"
+#endif
+
+#include "onnxruntime_cxx_api.h"  // NOLINT
+#include "sherpa-onnx/csrc/online-transducer-model-config.h"
+#include "sherpa-onnx/csrc/online-transducer-model.h"
+
+namespace sherpa_onnx {
+
+class OnlineZipformer2TransducerModel : public OnlineTransducerModel {
+ public:
+  explicit OnlineZipformer2TransducerModel(
+      const OnlineTransducerModelConfig &config);
+
+#if __ANDROID_API__ >= 9
+  OnlineZipformer2TransducerModel(AAssetManager *mgr,
+                                 const OnlineTransducerModelConfig &config);
+#endif
+
+  std::vector<Ort::Value> StackStates(
+      const std::vector<std::vector<Ort::Value>> &states) const override;
+
+  std::vector<std::vector<Ort::Value>> UnStackStates(
+      const std::vector<Ort::Value> &states) const override;
+
+  std::vector<Ort::Value> GetEncoderInitStates() override;
+
+  std::pair<Ort::Value, std::vector<Ort::Value>> RunEncoder(
+      Ort::Value features, std::vector<Ort::Value> states,
+      Ort::Value processed_frames) override;
+
+  Ort::Value RunDecoder(Ort::Value decoder_input) override;
+
+  Ort::Value RunJoiner(Ort::Value encoder_out, Ort::Value decoder_out) override;
+
+  int32_t ContextSize() const override { return context_size_; }
+
+  int32_t ChunkSize() const override { return T_; }
+
+  int32_t ChunkShift() const override { return decode_chunk_len_; }
+
+  int32_t VocabSize() const override { return vocab_size_; }
+  OrtAllocator *Allocator() override { return allocator_; }
+
+ private:
+  void InitEncoder(void *model_data, size_t model_data_length);
+  void InitDecoder(void *model_data, size_t model_data_length);
+  void InitJoiner(void *model_data, size_t model_data_length);
+
+ private:
+  Ort::Env env_;
+  Ort::SessionOptions sess_opts_;
+  Ort::AllocatorWithDefaultOptions allocator_;
+
+  std::unique_ptr<Ort::Session> encoder_sess_;
+  std::unique_ptr<Ort::Session> decoder_sess_;
+  std::unique_ptr<Ort::Session> joiner_sess_;
+
+  std::vector<std::string> encoder_input_names_;
+  std::vector<const char *> encoder_input_names_ptr_;
+
+  std::vector<std::string> encoder_output_names_;
+  std::vector<const char *> encoder_output_names_ptr_;
+
+  std::vector<std::string> decoder_input_names_;
+  std::vector<const char *> decoder_input_names_ptr_;
+
+  std::vector<std::string> decoder_output_names_;
+  std::vector<const char *> decoder_output_names_ptr_;
+
+  std::vector<std::string> joiner_input_names_;
+  std::vector<const char *> joiner_input_names_ptr_;
+
+  std::vector<std::string> joiner_output_names_;
+  std::vector<const char *> joiner_output_names_ptr_;
+
+  OnlineTransducerModelConfig config_;
+
+  std::vector<int32_t> encoder_dims_;
+  std::vector<int32_t> query_head_dims_;
+  std::vector<int32_t> value_head_dims_;
+  std::vector<int32_t> num_heads_;
+  std::vector<int32_t> num_encoder_layers_;
+  std::vector<int32_t> cnn_module_kernels_;
+  std::vector<int32_t> left_context_len_;
+
+  int32_t T_ = 0;
+  int32_t decode_chunk_len_ = 0;
+
+  int32_t context_size_ = 0;
+  int32_t vocab_size_ = 0;
+};
+
+}  // namespace sherpa_onnx
+
+#endif  // SHERPA_ONNX_CSRC_ONLINE_ZIPFORMER2_TRANSDUCER_MODEL_H_