Add C++ runtime and Python API for NeMo Canary models (#2352)

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

@@ -0,0 +1,86 @@
+// sherpa-onnx/csrc/offline-canary-model-config.cc
+//
+// Copyright (c)  2025  Xiaomi Corporation
+
+#include "sherpa-onnx/csrc/offline-canary-model-config.h"
+
+#include <sstream>
+
+#include "sherpa-onnx/csrc/file-utils.h"
+#include "sherpa-onnx/csrc/macros.h"
+
+namespace sherpa_onnx {
+
+void OfflineCanaryModelConfig::Register(ParseOptions *po) {
+  po->Register("canary-encoder", &encoder,
+               "Path to onnx encoder of Canary, e.g., encoder.int8.onnx");
+
+  po->Register("canary-decoder", &decoder,
+               "Path to onnx decoder of Canary, e.g., decoder.int8.onnx");
+
+  po->Register("canary-src-lang", &src_lang,
+               "Valid values: en, de, es, fr. If empty, default to use en");
+
+  po->Register("canary-tgt-lang", &tgt_lang,
+               "Valid values: en, de, es, fr. If empty, default to use en");
+
+  po->Register("canary-use-pnc", &use_pnc,
+               "true to enable punctuations and casing. false to disable them");
+}
+
+bool OfflineCanaryModelConfig::Validate() const {
+  if (encoder.empty()) {
+    SHERPA_ONNX_LOGE("Please provide --canary-encoder");
+    return false;
+  }
+
+  if (!FileExists(encoder)) {
+    SHERPA_ONNX_LOGE("Canary encoder file '%s' does not exist",
+                     encoder.c_str());
+    return false;
+  }
+
+  if (decoder.empty()) {
+    SHERPA_ONNX_LOGE("Please provide --canary-decoder");
+    return false;
+  }
+
+  if (!FileExists(decoder)) {
+    SHERPA_ONNX_LOGE("Canary decoder file '%s' does not exist",
+                     decoder.c_str());
+    return false;
+  }
+
+  if (!src_lang.empty()) {
+    if (src_lang != "en" && src_lang != "de" && src_lang != "es" &&
+        src_lang != "fr") {
+      SHERPA_ONNX_LOGE("Please use en, de, es, or fr for --canary-src-lang");
+      return false;
+    }
+  }
+
+  if (!tgt_lang.empty()) {
+    if (tgt_lang != "en" && tgt_lang != "de" && tgt_lang != "es" &&
+        tgt_lang != "fr") {
+      SHERPA_ONNX_LOGE("Please use en, de, es, or fr for --canary-tgt-lang");
+      return false;
+    }
+  }
+
+  return true;
+}
+
+std::string OfflineCanaryModelConfig::ToString() const {
+  std::ostringstream os;
+
+  os << "OfflineCanaryModelConfig(";
+  os << "encoder=\"" << encoder << "\", ";
+  os << "decoder=\"" << decoder << "\", ";
+  os << "src_lang=\"" << src_lang << "\", ";
+  os << "tgt_lang=\"" << tgt_lang << "\", ";
+  os << "use_pnc=" << (use_pnc ? "True" : "False") << ")";
+
+  return os.str();
+}
+
+}  // namespace sherpa_onnx