Add C++ runtime for models from 3d-speaker (#523)

sherpa-onnx/csrc/speaker-embedding-extractor-model.cc

@@ -0,0 +1,112 @@
+// sherpa-onnx/csrc/speaker-embedding-extractor-model.cc
+//
+// Copyright (c)  2023-2024  Xiaomi Corporation
+
+#include "sherpa-onnx/csrc/speaker-embedding-extractor-model.h"
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "sherpa-onnx/csrc/macros.h"
+#include "sherpa-onnx/csrc/onnx-utils.h"
+#include "sherpa-onnx/csrc/session.h"
+#include "sherpa-onnx/csrc/speaker-embedding-extractor-model-meta-data.h"
+
+namespace sherpa_onnx {
+
+class SpeakerEmbeddingExtractorModel::Impl {
+ public:
+  explicit Impl(const SpeakerEmbeddingExtractorConfig &config)
+      : config_(config),
+        env_(ORT_LOGGING_LEVEL_ERROR),
+        sess_opts_(GetSessionOptions(config)),
+        allocator_{} {
+    {
+      auto buf = ReadFile(config.model);
+      Init(buf.data(), buf.size());
+    }
+  }
+
+  Ort::Value Compute(Ort::Value x) const {
+    std::array<Ort::Value, 1> inputs = {std::move(x)};
+
+    auto outputs =
+        sess_->Run({}, input_names_ptr_.data(), inputs.data(), inputs.size(),
+                   output_names_ptr_.data(), output_names_ptr_.size());
+    return std::move(outputs[0]);
+  }
+
+  const SpeakerEmbeddingExtractorModelMetaData &GetMetaData() 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();
+    if (config_.debug) {
+      std::ostringstream os;
+      PrintModelMetadata(os, meta_data);
+      SHERPA_ONNX_LOGE("%s", os.str().c_str());
+    }
+
+    Ort::AllocatorWithDefaultOptions allocator;  // used in the macro below
+    SHERPA_ONNX_READ_META_DATA(meta_data_.output_dim, "output_dim");
+    SHERPA_ONNX_READ_META_DATA(meta_data_.sample_rate, "sample_rate");
+    SHERPA_ONNX_READ_META_DATA(meta_data_.normalize_samples,
+                               "normalize_samples");
+    SHERPA_ONNX_READ_META_DATA_STR(meta_data_.language, "language");
+
+    SHERPA_ONNX_READ_META_DATA_STR_WITH_DEFAULT(
+        meta_data_.feature_normalize_type, "feature_normalize_type", "");
+
+    std::string framework;
+    SHERPA_ONNX_READ_META_DATA_STR(framework, "framework");
+    if (framework != "wespeaker" && framework != "3d-speaker") {
+      SHERPA_ONNX_LOGE("Expect a wespeaker or a 3d-speaker model, given: %s",
+                       framework.c_str());
+      exit(-1);
+    }
+  }
+
+ private:
+  SpeakerEmbeddingExtractorConfig 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_;
+
+  SpeakerEmbeddingExtractorModelMetaData meta_data_;
+};
+
+SpeakerEmbeddingExtractorModel::SpeakerEmbeddingExtractorModel(
+    const SpeakerEmbeddingExtractorConfig &config)
+    : impl_(std::make_unique<Impl>(config)) {}
+
+SpeakerEmbeddingExtractorModel::~SpeakerEmbeddingExtractorModel() = default;
+
+const SpeakerEmbeddingExtractorModelMetaData &
+SpeakerEmbeddingExtractorModel::GetMetaData() const {
+  return impl_->GetMetaData();
+}
+
+Ort::Value SpeakerEmbeddingExtractorModel::Compute(Ort::Value x) const {
+  return impl_->Compute(std::move(x));
+}
+
+}  // namespace sherpa_onnx