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Add C++ support for non-streaming NeMo fast conformer hybrid transducer ctc (the ctc branch) (#848)

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This commit is contained in:
Fangjun Kuang
2024-05-09 15:32:22 +08:00
committed by GitHub
parent 5ed3ec1c04
commit 5d8c35e44e
8 changed files with 156 additions and 34 deletions
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14
sherpa-onnx/csrc/offline-ctc-model.cc
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@@ -20,6 +20,7 @@ namespace {
enum class ModelType {
kEncDecCTCModelBPE,
kEncDecHybridRNNTCTCBPEModel,
kTdnn,
kZipformerCtc,
kWenetCtc,
@@ -55,7 +56,10 @@ static ModelType GetModelType(char *model_data, size_t model_data_length,
"No model_type in the metadata!\n"
"If you are using models from NeMo, please refer to\n"
"https://huggingface.co/csukuangfj/"
"sherpa-onnx-nemo-ctc-en-citrinet-512/blob/main/add-model-metadata.py"
"sherpa-onnx-nemo-ctc-en-citrinet-512/blob/main/add-model-metadata.py\n"
"or "
"https://github.com/k2-fsa/sherpa-onnx/tree/master/scripts/nemo/"
"fast-conformer-hybrid-transducer-ctc\n"
"If you are using models from WeNet, please refer to\n"
"https://github.com/k2-fsa/sherpa-onnx/blob/master/scripts/wenet/"
"run.sh\n"
@@ -66,6 +70,8 @@ static ModelType GetModelType(char *model_data, size_t model_data_length,
if (model_type.get() == std::string("EncDecCTCModelBPE")) {
return ModelType::kEncDecCTCModelBPE;
} else if (model_type.get() == std::string("EncDecHybridRNNTCTCBPEModel")) {
return ModelType::kEncDecHybridRNNTCTCBPEModel;
} else if (model_type.get() == std::string("tdnn")) {
return ModelType::kTdnn;
} else if (model_type.get() == std::string("zipformer2_ctc")) {
@@ -106,6 +112,9 @@ std::unique_ptr<OfflineCtcModel> OfflineCtcModel::Create(
case ModelType::kEncDecCTCModelBPE:
return std::make_unique<OfflineNemoEncDecCtcModel>(config);
break;
case ModelType::kEncDecHybridRNNTCTCBPEModel:
return std::make_unique<OfflineNemoEncDecHybridRNNTCTCBPEModel>(config);
break;
case ModelType::kTdnn:
return std::make_unique<OfflineTdnnCtcModel>(config);
break;
@@ -153,6 +162,9 @@ std::unique_ptr<OfflineCtcModel> OfflineCtcModel::Create(
case ModelType::kEncDecCTCModelBPE:
return std::make_unique<OfflineNemoEncDecCtcModel>(mgr, config);
break;
case ModelType::kEncDecHybridRNNTCTCBPEModel:
return std::make_unique<OfflineNemoEncDecHybridRNNTCTCBPEModel>(config);
break;
case ModelType::kTdnn:
return std::make_unique<OfflineTdnnCtcModel>(mgr, config);
break;

2
sherpa-onnx/csrc/offline-nemo-enc-dec-ctc-model.h
View File

@@ -81,6 +81,8 @@ class OfflineNemoEncDecCtcModel : public OfflineCtcModel {
std::unique_ptr<Impl> impl_;
};
using OfflineNemoEncDecHybridRNNTCTCBPEModel = OfflineNemoEncDecCtcModel;
} // namespace sherpa_onnx
#endif // SHERPA_ONNX_CSRC_OFFLINE_NEMO_ENC_DEC_CTC_MODEL_H_

8
sherpa-onnx/csrc/offline-recognizer-impl.cc
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@@ -122,7 +122,8 @@ std::unique_ptr<OfflineRecognizerImpl> OfflineRecognizerImpl::Create(
return std::make_unique<OfflineRecognizerParaformerImpl>(config);
}
if (model_type == "EncDecCTCModelBPE" || model_type == "tdnn" ||
if (model_type == "EncDecCTCModelBPE" ||
model_type == "EncDecHybridRNNTCTCBPEModel" || model_type == "tdnn" ||
model_type == "zipformer2_ctc" || model_type == "wenet_ctc") {
return std::make_unique<OfflineRecognizerCtcImpl>(config);
}
@@ -137,6 +138,7 @@ std::unique_ptr<OfflineRecognizerImpl> OfflineRecognizerImpl::Create(
" - Non-streaming transducer models from icefall\n"
" - Non-streaming Paraformer models from FunASR\n"
" - EncDecCTCModelBPE models from NeMo\n"
" - EncDecHybridRNNTCTCBPEModel models from NeMo\n"
" - Whisper models\n"
" - Tdnn models\n"
" - Zipformer CTC models\n"
@@ -252,7 +254,8 @@ std::unique_ptr<OfflineRecognizerImpl> OfflineRecognizerImpl::Create(
return std::make_unique<OfflineRecognizerParaformerImpl>(mgr, config);
}
if (model_type == "EncDecCTCModelBPE" || model_type == "tdnn" ||
if (model_type == "EncDecCTCModelBPE" ||
model_type == "EncDecHybridRNNTCTCBPEModel" || model_type == "tdnn" ||
model_type == "zipformer2_ctc" || model_type == "wenet_ctc") {
return std::make_unique<OfflineRecognizerCtcImpl>(mgr, config);
}
@@ -267,6 +270,7 @@ std::unique_ptr<OfflineRecognizerImpl> OfflineRecognizerImpl::Create(
" - Non-streaming transducer models from icefall\n"
" - Non-streaming Paraformer models from FunASR\n"
" - EncDecCTCModelBPE models from NeMo\n"
" - EncDecHybridRNNTCTCBPEModel models from NeMo\n"
" - Whisper models\n"
" - Tdnn models\n"
" - Zipformer CTC models\n"

4
sherpa-onnx/csrc/symbol-table.cc
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@@ -67,9 +67,13 @@ void SymbolTable::Init(std::istream &is) {
// the following check.
//
// Note: Only id2sym_ matters as we use it to convert ID to symbols.
#if 0
// we disable the test here since for some multi-lingual BPE models
// from NeMo, the same symbol can appear multiple times with different IDs.
if (sym != " ") {
assert(sym2id_.count(sym) == 0);
}
#endif
assert(id2sym_.count(id) == 0);