Add TTS with VITS (#360)

sherpa-onnx/csrc/offline-tts-vits-model.cc

@@ -0,0 +1,135 @@
+// sherpa-onnx/csrc/offline-tts-vits-model.cc
+//
+// Copyright (c)  2023  Xiaomi Corporation
+
+#include "sherpa-onnx/csrc/offline-tts-vits-model.h"
+
+#include <algorithm>
+#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"
+
+namespace sherpa_onnx {
+
+class OfflineTtsVitsModel::Impl {
+ public:
+  explicit Impl(const OfflineTtsModelConfig &config)
+      : config_(config),
+        env_(ORT_LOGGING_LEVEL_WARNING),
+        sess_opts_(GetSessionOptions(config)),
+        allocator_{} {
+    auto buf = ReadFile(config.vits.model);
+    Init(buf.data(), buf.size());
+  }
+
+  Ort::Value Run(Ort::Value x) {
+    auto memory_info =
+        Ort::MemoryInfo::CreateCpu(OrtDeviceAllocator, OrtMemTypeDefault);
+
+    std::vector<int64_t> x_shape = x.GetTensorTypeAndShapeInfo().GetShape();
+    if (x_shape[0] != 1) {
+      SHERPA_ONNX_LOGE("Support only batch_size == 1. Given: %d",
+                       static_cast<int32_t>(x_shape[0]));
+      exit(-1);
+    }
+
+    int64_t len = x_shape[1];
+    int64_t len_shape = 1;
+
+    Ort::Value x_length =
+        Ort::Value::CreateTensor(memory_info, &len, 1, &len_shape, 1);
+
+    int64_t scale_shape = 1;
+    float noise_scale = 1;
+    float length_scale = 1;
+    float noise_scale_w = 1;
+
+    Ort::Value noise_scale_tensor =
+        Ort::Value::CreateTensor(memory_info, &noise_scale, 1, &scale_shape, 1);
+    Ort::Value length_scale_tensor = Ort::Value::CreateTensor(
+        memory_info, &length_scale, 1, &scale_shape, 1);
+    Ort::Value noise_scale_w_tensor = Ort::Value::CreateTensor(
+        memory_info, &noise_scale_w, 1, &scale_shape, 1);
+
+    std::array<Ort::Value, 5> inputs = {
+        std::move(x), std::move(x_length), std::move(noise_scale_tensor),
+        std::move(length_scale_tensor), std::move(noise_scale_w_tensor)};
+
+    auto out =
+        sess_->Run({}, input_names_ptr_.data(), inputs.data(), inputs.size(),
+                   output_names_ptr_.data(), output_names_ptr_.size());
+
+    return std::move(out[0]);
+  }
+
+  int32_t SampleRate() const { return sample_rate_; }
+
+  bool AddBlank() const { return add_blank_; }
+
+  std::string Punctuations() const { return punctuations_; }
+
+ 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;
+      os << "---vits model---\n";
+      PrintModelMetadata(os, meta_data);
+      SHERPA_ONNX_LOGE("%s\n", os.str().c_str());
+    }
+
+    Ort::AllocatorWithDefaultOptions allocator;  // used in the macro below
+    SHERPA_ONNX_READ_META_DATA(sample_rate_, "sample_rate");
+    SHERPA_ONNX_READ_META_DATA(add_blank_, "add_blank");
+    SHERPA_ONNX_READ_META_DATA_STR(punctuations_, "punctuation");
+  }
+
+ private:
+  OfflineTtsModelConfig 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_;
+
+  int32_t sample_rate_;
+  int32_t add_blank_;
+  std::string punctuations_;
+};
+
+OfflineTtsVitsModel::OfflineTtsVitsModel(const OfflineTtsModelConfig &config)
+    : impl_(std::make_unique<Impl>(config)) {}
+
+OfflineTtsVitsModel::~OfflineTtsVitsModel() = default;
+
+Ort::Value OfflineTtsVitsModel::Run(Ort::Value x) {
+  return impl_->Run(std::move(x));
+}
+
+int32_t OfflineTtsVitsModel::SampleRate() const { return impl_->SampleRate(); }
+
+bool OfflineTtsVitsModel::AddBlank() const { return impl_->AddBlank(); }
+
+std::string OfflineTtsVitsModel::Punctuations() const {
+  return impl_->Punctuations();
+}
+
+}  // namespace sherpa_onnx