online-cnn-bilstm-model.cc
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// sherpa-onnx/csrc/online-cnn-bilstm-model.cc
//
// Copyright (c) 2024 Jian You (jianyou@cisco.com, Cisco Systems)
#include "sherpa-onnx/csrc/online-cnn-bilstm-model.h"
#include <string>
#include <vector>
#include "sherpa-onnx/csrc/onnx-utils.h"
#include "sherpa-onnx/csrc/session.h"
#include "sherpa-onnx/csrc/text-utils.h"
namespace sherpa_onnx {
class OnlineCNNBiLSTMModel::Impl {
public:
explicit Impl(const OnlinePunctuationModelConfig &config)
: config_(config),
env_(ORT_LOGGING_LEVEL_ERROR),
sess_opts_(GetSessionOptions(config)),
allocator_{} {
auto buf = ReadFile(config_.cnn_bilstm);
Init(buf.data(), buf.size());
}
#if __ANDROID_API__ >= 9
Impl(AAssetManager *mgr, const OnlinePunctuationModelConfig &config)
: config_(config),
env_(ORT_LOGGING_LEVEL_ERROR),
sess_opts_(GetSessionOptions(config)),
allocator_{} {
auto buf = ReadFile(mgr, config_.cnn_bilstm);
Init(buf.data(), buf.size());
}
#endif
std::pair<Ort::Value, Ort::Value> Forward(Ort::Value token_ids, Ort::Value valid_ids, Ort::Value label_lens) {
std::array<Ort::Value, 3> inputs = {std::move(token_ids), std::move(valid_ids), std::move(label_lens)};
auto ans =
sess_->Run({}, input_names_ptr_.data(), inputs.data(), inputs.size(),
output_names_ptr_.data(), output_names_ptr_.size());
return {std::move(ans[0]), std::move(ans[1])};
}
OrtAllocator *Allocator() const { return allocator_; }
const OnlineCNNBiLSTMModelMetaData &GetModelMetadata() const {
return meta_data_;
}
private:
void Init(void *model_data, size_t model_data_length) {
sess_ = std::make_unique<Ort::Session>(env_, model_data, model_data_length,
sess_opts_);
GetInputNames(sess_.get(), &input_names_, &input_names_ptr_);
GetOutputNames(sess_.get(), &output_names_, &output_names_ptr_);
// get meta data
Ort::ModelMetadata meta_data = sess_->GetModelMetadata();
Ort::AllocatorWithDefaultOptions allocator; // used in the macro below
SHERPA_ONNX_READ_META_DATA(meta_data_.comma_id, "COMMA");
SHERPA_ONNX_READ_META_DATA(meta_data_.period_id, "PERIOD");
SHERPA_ONNX_READ_META_DATA(meta_data_.quest_id, "QUESTION");
// assert here, because we will use the constant value
assert(meta_data_.comma_id == 1);
assert(meta_data_.period_id == 2);
assert(meta_data_.quest_id == 3);
SHERPA_ONNX_READ_META_DATA(meta_data_.upper_id, "UPPER");
SHERPA_ONNX_READ_META_DATA(meta_data_.cap_id, "CAP");
SHERPA_ONNX_READ_META_DATA(meta_data_.mix_case_id, "MIX_CASE");
assert(meta_data_.upper_id == 1);
assert(meta_data_.cap_id == 2);
assert(meta_data_.mix_case_id == 3);
// output shape is (T', num_cases)
meta_data_.num_cases =
sess_->GetOutputTypeInfo(0).GetTensorTypeAndShapeInfo().GetShape()[1];
meta_data_.num_punctuations =
sess_->GetOutputTypeInfo(1).GetTensorTypeAndShapeInfo().GetShape()[1];
}
private:
OnlinePunctuationModelConfig config_;
Ort::Env env_;
Ort::SessionOptions sess_opts_;
Ort::AllocatorWithDefaultOptions allocator_;
std::unique_ptr<Ort::Session> sess_;
std::vector<std::string> input_names_;
std::vector<const char *> input_names_ptr_;
std::vector<std::string> output_names_;
std::vector<const char *> output_names_ptr_;
OnlineCNNBiLSTMModelMetaData meta_data_;
};
OnlineCNNBiLSTMModel::OnlineCNNBiLSTMModel(
const OnlinePunctuationModelConfig &config)
: impl_(std::make_unique<Impl>(config)) {}
#if __ANDROID_API__ >= 9
OnlineCNNBiLSTMModel::OnlineCNNBiLSTMModel(
AAssetManager *mgr, const OnlinePunctuationModelConfig &config)
: impl_(std::make_unique<Impl>(mgr, config)) {}
#endif
OnlineCNNBiLSTMModel::~OnlineCNNBiLSTMModel() = default;
std::pair<Ort::Value, Ort::Value> OnlineCNNBiLSTMModel::Forward(Ort::Value token_ids,
Ort::Value valid_ids,
Ort::Value label_lens) const {
return impl_->Forward(std::move(token_ids), std::move(valid_ids), std::move(label_lens));
}
OrtAllocator *OnlineCNNBiLSTMModel::Allocator() const {
return impl_->Allocator();
}
const OnlineCNNBiLSTMModelMetaData &
OnlineCNNBiLSTMModel::GetModelMetadata() const {
return impl_->GetModelMetadata();
}
} // namespace sherpa_onnx