Use espeak-ng for coqui-ai/TTS VITS English models.

python-api-examples/offline-tts-play.py

@@ -311,6 +311,9 @@ def main():
 
     if len(audio.samples) == 0:
         print("Error in generating audios. Please read previous error messages.")
+        global killed
+        killed = True
+        play_back_thread.join()
         return
 
     elapsed_seconds = end - start

sherpa-onnx/csrc/offline-tts-vits-impl.h

@@ -69,12 +69,16 @@ class OfflineTtsVitsImpl : public OfflineTtsImpl {
   }
 #endif
 
-  int32_t SampleRate() const override { return model_->SampleRate(); }
+  int32_t SampleRate() const override {
+    return model_->GetMetaData().sample_rate;
+  }
 
   GeneratedAudio Generate(
       const std::string &_text, int64_t sid = 0, float speed = 1.0,
       GeneratedAudioCallback callback = nullptr) const override {
-    int32_t num_speakers = model_->NumSpeakers();
+    const auto &meta_data = model_->GetMetaData();
+    int32_t num_speakers = meta_data.num_speakers;
+
     if (num_speakers == 0 && sid != 0) {
       SHERPA_ONNX_LOGE(
           "This is a single-speaker model and supports only sid 0. Given sid: "
@@ -105,14 +109,14 @@ class OfflineTtsVitsImpl : public OfflineTtsImpl {
     }
 
     std::vector<std::vector<int64_t>> x =
-        frontend_->ConvertTextToTokenIds(text, model_->Voice());
+        frontend_->ConvertTextToTokenIds(text, meta_data.voice);
 
     if (x.empty() || (x.size() == 1 && x[0].empty())) {
       SHERPA_ONNX_LOGE("Failed to convert %s to token IDs", text.c_str());
       return {};
     }
 
-    if (model_->AddBlank() && config_.model.vits.data_dir.empty()) {
+    if (meta_data.add_blank && config_.model.vits.data_dir.empty()) {
       for (auto &k : x) {
         k = AddBlank(k);
       }
@@ -189,25 +193,33 @@ class OfflineTtsVitsImpl : public OfflineTtsImpl {
  private:
 #if __ANDROID_API__ >= 9
   void InitFrontend(AAssetManager *mgr) {
-    if (model_->IsPiper() && !config_.model.vits.data_dir.empty()) {
+    const auto &meta_data = model_->GetMetaData();
+
+    if ((meta_data.is_piper || meta_data.is_coqui) &&
+        !config_.model.vits.data_dir.empty()) {
       frontend_ = std::make_unique<PiperPhonemizeLexicon>(
-          mgr, config_.model.vits.tokens, config_.model.vits.data_dir);
+          mgr, config_.model.vits.tokens, config_.model.vits.data_dir,
+          meta_data);
     } else {
       frontend_ = std::make_unique<Lexicon>(
           mgr, config_.model.vits.lexicon, config_.model.vits.tokens,
-          model_->Punctuations(), model_->Language(), config_.model.debug);
+          meta_data.punctuations, meta_data.language, config_.model.debug);
     }
   }
 #endif
 
   void InitFrontend() {
-    if (model_->IsPiper() && !config_.model.vits.data_dir.empty()) {
+    const auto &meta_data = model_->GetMetaData();
+
+    if ((meta_data.is_piper || meta_data.is_coqui) &&
+        !config_.model.vits.data_dir.empty()) {
       frontend_ = std::make_unique<PiperPhonemizeLexicon>(
-          config_.model.vits.tokens, config_.model.vits.data_dir);
+          config_.model.vits.tokens, config_.model.vits.data_dir,
+          model_->GetMetaData());
     } else {
       frontend_ = std::make_unique<Lexicon>(
           config_.model.vits.lexicon, config_.model.vits.tokens,
-          model_->Punctuations(), model_->Language(), config_.model.debug);
+          meta_data.punctuations, meta_data.language, config_.model.debug);
     }
   }
 
@@ -256,7 +268,7 @@ class OfflineTtsVitsImpl : public OfflineTtsImpl {
     const float *p = audio.GetTensorData<float>();
 
     GeneratedAudio ans;
-    ans.sample_rate = model_->SampleRate();
+    ans.sample_rate = model_->GetMetaData().sample_rate;
     ans.samples = std::vector<float>(p, p + total);
     return ans;
   }

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

@@ -46,7 +46,8 @@ bool OfflineTtsVitsModelConfig::Validate() const {
 
   if (data_dir.empty()) {
     if (lexicon.empty()) {
-      SHERPA_ONNX_LOGE("Please provide --vits-lexicon");
+      SHERPA_ONNX_LOGE(
+          "Please provide --vits-lexicon if you leave --vits-data-dir empty");
       return false;
     }
 

sherpa-onnx/csrc/offline-tts-vits-model-metadata.h

@@ -0,0 +1,34 @@
+// sherpa-onnx/csrc/offline-tts-vits-model-metadata.h
+//
+// Copyright (c)  2023  Xiaomi Corporation
+
+#ifndef SHERPA_ONNX_CSRC_OFFLINE_TTS_VITS_MODEL_METADATA_H_
+#define SHERPA_ONNX_CSRC_OFFLINE_TTS_VITS_MODEL_METADATA_H_
+
+#include <cstdint>
+#include <string>
+
+namespace sherpa_onnx {
+
+struct OfflineTtsVitsModelMetaData {
+  int32_t sample_rate;
+  int32_t add_blank = 0;
+  int32_t num_speakers = 0;
+
+  std::string punctuations;
+  std::string language;
+  std::string voice;
+
+  bool is_piper = false;
+  bool is_coqui = false;
+
+  // the following options are for models from coqui-ai/TTS
+  int32_t blank_id = 0;
+  int32_t bos_id = 0;
+  int32_t eos_id = 0;
+  int32_t use_eos_bos = 0;
+};
+
+}  // namespace sherpa_onnx
+
+#endif  // SHERPA_ONNX_CSRC_OFFLINE_TTS_VITS_MODEL_METADATA_H_

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

@@ -38,22 +38,14 @@ class OfflineTtsVitsModel::Impl {
 #endif
 
   Ort::Value Run(Ort::Value x, int64_t sid, float speed) {
-    if (is_piper_) {
-      return RunVitsPiper(std::move(x), sid, speed);
+    if (meta_data_.is_piper || meta_data_.is_coqui) {
+      return RunVitsPiperOrCoqui(std::move(x), sid, speed);
     }
 
     return RunVits(std::move(x), sid, speed);
   }
 
-  int32_t SampleRate() const { return sample_rate_; }
-
-  bool AddBlank() const { return add_blank_; }
-
-  std::string Punctuations() const { return punctuations_; }
-  std::string Language() const { return language_; }
-  std::string Voice() const { return voice_; }
-  bool IsPiper() const { return is_piper_; }
-  int32_t NumSpeakers() const { return num_speakers_; }
+  const OfflineTtsVitsModelMetaData &GetMetaData() const { return meta_data_; }
 
  private:
   void Init(void *model_data, size_t model_data_length) {
@@ -70,27 +62,52 @@ class OfflineTtsVitsModel::Impl {
       std::ostringstream os;
       os << "---vits model---\n";
       PrintModelMetadata(os, meta_data);
+
+      os << "----------input names----------\n";
+      int32_t i = 0;
+      for (const auto &s : input_names_) {
+        os << i << " " << s << "\n";
+        ++i;
+      }
+      os << "----------output names----------\n";
+      i = 0;
+      for (const auto &s : output_names_) {
+        os << i << " " << s << "\n";
+        ++i;
+      }
+
       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_WITH_DEFAULT(add_blank_, "add_blank", 0);
-    SHERPA_ONNX_READ_META_DATA(num_speakers_, "n_speakers");
-    SHERPA_ONNX_READ_META_DATA_STR_WITH_DEFAULT(punctuations_, "punctuation",
-                                                "");
-    SHERPA_ONNX_READ_META_DATA_STR(language_, "language");
-    SHERPA_ONNX_READ_META_DATA_STR_WITH_DEFAULT(voice_, "voice", "");
+    SHERPA_ONNX_READ_META_DATA(meta_data_.sample_rate, "sample_rate");
+    SHERPA_ONNX_READ_META_DATA_WITH_DEFAULT(meta_data_.add_blank, "add_blank",
+                                            0);
+    SHERPA_ONNX_READ_META_DATA(meta_data_.num_speakers, "n_speakers");
+    SHERPA_ONNX_READ_META_DATA_STR_WITH_DEFAULT(meta_data_.punctuations,
+                                                "punctuation", "");
+    SHERPA_ONNX_READ_META_DATA_STR(meta_data_.language, "language");
+    SHERPA_ONNX_READ_META_DATA_STR_WITH_DEFAULT(meta_data_.voice, "voice", "");
+
+    SHERPA_ONNX_READ_META_DATA_WITH_DEFAULT(meta_data_.blank_id, "blank_id", 0);
+    SHERPA_ONNX_READ_META_DATA_WITH_DEFAULT(meta_data_.bos_id, "bos_id", 0);
+    SHERPA_ONNX_READ_META_DATA_WITH_DEFAULT(meta_data_.eos_id, "eos_id", 0);
+    SHERPA_ONNX_READ_META_DATA_WITH_DEFAULT(meta_data_.use_eos_bos,
+                                            "use_eos_bos", 0);
 
     std::string comment;
     SHERPA_ONNX_READ_META_DATA_STR(comment, "comment");
-    if (comment.find("piper") != std::string::npos ||
-        comment.find("coqui") != std::string::npos) {
-      is_piper_ = true;
+
+    if (comment.find("piper") != std::string::npos) {
+      meta_data_.is_piper = true;
+    }
+
+    if (comment.find("coqui") != std::string::npos) {
+      meta_data_.is_coqui = true;
     }
   }
 
-  Ort::Value RunVitsPiper(Ort::Value x, int64_t sid, float speed) {
+  Ort::Value RunVitsPiperOrCoqui(Ort::Value x, int64_t sid, float speed) {
     auto memory_info =
         Ort::MemoryInfo::CreateCpu(OrtDeviceAllocator, OrtMemTypeDefault);
 
@@ -213,14 +230,7 @@ class OfflineTtsVitsModel::Impl {
   std::vector<std::string> output_names_;
   std::vector<const char *> output_names_ptr_;
 
-  int32_t sample_rate_;
-  int32_t add_blank_;
-  int32_t num_speakers_;
-  std::string punctuations_;
-  std::string language_;
-  std::string voice_;
-
-  bool is_piper_ = false;
+  OfflineTtsVitsModelMetaData meta_data_;
 };
 
 OfflineTtsVitsModel::OfflineTtsVitsModel(const OfflineTtsModelConfig &config)
@@ -239,21 +249,8 @@ Ort::Value OfflineTtsVitsModel::Run(Ort::Value x, int64_t sid /*=0*/,
   return impl_->Run(std::move(x), sid, speed);
 }
 
-int32_t OfflineTtsVitsModel::SampleRate() const { return impl_->SampleRate(); }
-
-bool OfflineTtsVitsModel::AddBlank() const { return impl_->AddBlank(); }
-
-std::string OfflineTtsVitsModel::Punctuations() const {
-  return impl_->Punctuations();
-}
-
-std::string OfflineTtsVitsModel::Language() const { return impl_->Language(); }
-std::string OfflineTtsVitsModel::Voice() const { return impl_->Voice(); }
-
-bool OfflineTtsVitsModel::IsPiper() const { return impl_->IsPiper(); }
-
-int32_t OfflineTtsVitsModel::NumSpeakers() const {
-  return impl_->NumSpeakers();
+const OfflineTtsVitsModelMetaData &OfflineTtsVitsModel::GetMetaData() const {
+  return impl_->GetMetaData();
 }
 
 }  // namespace sherpa_onnx

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

@@ -15,6 +15,7 @@
 
 #include "onnxruntime_cxx_api.h"  // NOLINT
 #include "sherpa-onnx/csrc/offline-tts-model-config.h"
+#include "sherpa-onnx/csrc/offline-tts-vits-model-metadata.h"
 
 namespace sherpa_onnx {
 
@@ -39,17 +40,7 @@ class OfflineTtsVitsModel {
    */
   Ort::Value Run(Ort::Value x, int64_t sid = 0, float speed = 1.0);
 
-  // Sample rate of the generated audio
-  int32_t SampleRate() const;
-
-  // true to insert a blank between each token
-  bool AddBlank() const;
-
-  std::string Punctuations() const;
-  std::string Language() const;  // e.g., Chinese, English, German, etc.
-  std::string Voice() const;     // e.g., en-us, for espeak-ng
-  bool IsPiper() const;
-  int32_t NumSpeakers() const;
+  const OfflineTtsVitsModelMetaData &GetMetaData() const;
 
  private:
   class Impl;