Add non-streaming ASR (#92)

sherpa-onnx/csrc/offline-transducer-model-config.cc

@@ -0,0 +1,68 @@
+// sherpa-onnx/csrc/offline-transducer-model-config.cc
+//
+// Copyright (c)  2023  Xiaomi Corporation
+#include "sherpa-onnx/csrc/offline-transducer-model-config.h"
+
+#include <sstream>
+
+#include "sherpa-onnx/csrc/file-utils.h"
+#include "sherpa-onnx/csrc/macros.h"
+
+namespace sherpa_onnx {
+
+void OfflineTransducerModelConfig::Register(ParseOptions *po) {
+  po->Register("encoder", &encoder_filename, "Path to encoder.onnx");
+  po->Register("decoder", &decoder_filename, "Path to decoder.onnx");
+  po->Register("joiner", &joiner_filename, "Path to joiner.onnx");
+  po->Register("tokens", &tokens, "Path to tokens.txt");
+  po->Register("num_threads", &num_threads,
+               "Number of threads to run the neural network");
+
+  po->Register("debug", &debug,
+               "true to print model information while loading it.");
+}
+
+bool OfflineTransducerModelConfig::Validate() const {
+  if (!FileExists(tokens)) {
+    SHERPA_ONNX_LOGE("%s does not exist", tokens.c_str());
+    return false;
+  }
+
+  if (!FileExists(encoder_filename)) {
+    SHERPA_ONNX_LOGE("%s does not exist", encoder_filename.c_str());
+    return false;
+  }
+
+  if (!FileExists(decoder_filename)) {
+    SHERPA_ONNX_LOGE("%s does not exist", decoder_filename.c_str());
+    return false;
+  }
+
+  if (!FileExists(joiner_filename)) {
+    SHERPA_ONNX_LOGE("%s does not exist", joiner_filename.c_str());
+    return false;
+  }
+
+  if (num_threads < 1) {
+    SHERPA_ONNX_LOGE("num_threads should be > 0. Given %d", num_threads);
+    return false;
+  }
+
+  return true;
+}
+
+std::string OfflineTransducerModelConfig::ToString() const {
+  std::ostringstream os;
+
+  os << "OfflineTransducerModelConfig(";
+  os << "encoder_filename=\"" << encoder_filename << "\", ";
+  os << "decoder_filename=\"" << decoder_filename << "\", ";
+  os << "joiner_filename=\"" << joiner_filename << "\", ";
+  os << "tokens=\"" << tokens << "\", ";
+  os << "num_threads=" << num_threads << ", ";
+  os << "debug=" << (debug ? "True" : "False") << ")";
+
+  return os.str();
+}
+
+}  // namespace sherpa_onnx