support reading rule FST for Android TTS (#410)

@@ -34,6 +34,11 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: ccache
+        uses: hendrikmuhs/ccache-action@v1.2
+        with:
+          key: ${{ matrix.os }}-android
+
       - name: Display NDK HOME
         shell: bash
         run: |
@@ -61,6 +66,10 @@ jobs:
       - name: build APK
         shell: bash
         run: |
+          export CMAKE_CXX_COMPILER_LAUNCHER=ccache
+          export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
+          cmake --version
+
           export ANDROID_NDK=$ANDROID_NDK_LATEST_HOME
           ./build-apk-tts.sh
 
@@ -70,12 +79,14 @@ jobs:
           ls -lh ./apks/
           du -h -d1 .
 
-      # - uses: actions/upload-artifact@v3
-      #   with:
-      #     name: tts-apk
-      #     path: ./apks/*.apk
+      - uses: actions/upload-artifact@v3
+        if: false
+        with:
+          name: tts-apk
+          path: ./apks/*.apk
 
       - name: Publish to huggingface
+        if: true
         env:
           HF_TOKEN: ${{ secrets.HF_TOKEN }}
         uses: nick-fields/retry@v2
@@ -92,7 +103,9 @@ jobs:
 
             git clone https://huggingface.co/csukuangfj/sherpa-onnx-apk huggingface
             cd huggingface
+            git fetch
             git pull
+            git merge -m "merge remote" --ff origin main
 
             mkdir -p tts
             cp -v ../apks/*.apk ./tts/

@@ -28,6 +28,12 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+
+      - name: ccache
+        uses: hendrikmuhs/ccache-action@v1.2
+        with:
+          key: ${{ matrix.os }}-android
+
       - name: Display NDK HOME
         shell: bash
         run: |
@@ -37,6 +43,10 @@ jobs:
       - name: build APK
         shell: bash
         run: |
+          export CMAKE_CXX_COMPILER_LAUNCHER=ccache
+          export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
+          cmake --version
+
           export ANDROID_NDK=$ANDROID_NDK_LATEST_HOME
           ./build-apk-vad.sh
           ./build-apk-two-pass.sh

@@ -101,12 +101,14 @@ class MainActivity : AppCompatActivity() {
     fun initTts() {
         var modelDir :String?
         var modelName :String?
+        var ruleFsts: String?
 
         // The purpose of such a design is to make the CI test easier
         // Please see
         // https://github.com/k2-fsa/sherpa-onnx/blob/master/scripts/apk/generate-tts-apk-script.py
         modelDir = null
         modelName = null
+        ruleFsts = null
 
         // Example 1:
         // modelDir = "vits-vctk"
@@ -116,7 +118,12 @@ class MainActivity : AppCompatActivity() {
         // modelDir = "vits-piper-en_US-lessac-medium"
         // modelName = "en_US-lessac-medium.onnx"
 
-        val config = getOfflineTtsConfig(modelDir = modelDir!!, modelName = modelName!!)!!
+        // Example 3:
+        // modelDir = "vits-zh-aishell3"
+        // modelName = "vits-aishell3.onnx"
+        // ruleFsts = "vits-zh-aishell3/rule.fst"
+
+        val config = getOfflineTtsConfig(modelDir = modelDir!!, modelName = modelName!!, ruleFsts = ruleFsts ?: "")!!
         tts = OfflineTts(assetManager = application.assets, config = config)
     }
 }

@@ -21,6 +21,7 @@ data class OfflineTtsModelConfig(
 
 data class OfflineTtsConfig(
     var model: OfflineTtsModelConfig,
+    var ruleFsts: String = "",
 )
 
 class GeneratedAudio(
@@ -116,7 +117,7 @@ class OfflineTts(
 // please refer to
 // https://k2-fsa.github.io/sherpa/onnx/tts/pretrained_models/index.html
 // to download models
-fun getOfflineTtsConfig(modelDir: String, modelName: String): OfflineTtsConfig? {
+fun getOfflineTtsConfig(modelDir: String, modelName: String, ruleFsts: String): OfflineTtsConfig? {
     return OfflineTtsConfig(
         model = OfflineTtsModelConfig(
             vits = OfflineTtsVitsModelConfig(
@@ -125,8 +126,9 @@ fun getOfflineTtsConfig(modelDir: String, modelName: String): OfflineTtsConfig?
                 tokens = "$modelDir/tokens.txt"
             ),
             numThreads = 2,
-            debug = false,
+            debug = true,
             provider = "cpu",
-        )
+        ),
+        ruleFsts=ruleFsts,
     )
 }

 function(download_kaldifst)
   include(FetchContent)
 
-  set(kaldifst_URL  "https://github.com/k2-fsa/kaldifst/archive/refs/tags/v1.7.8.tar.gz")
-  set(kaldifst_URL2 "https://huggingface.co/csukuangfj/kaldi-hmm-gmm-cmake-deps/resolve/main/kaldifst-1.7.8.tar.gz")
-  set(kaldifst_HASH "SHA256=94613923568ef9a240ba1059b8b9dfe3082daad794934635d99e66248a6687b5")
+  set(kaldifst_URL  "https://github.com/k2-fsa/kaldifst/archive/refs/tags/v1.7.9.tar.gz")
+  set(kaldifst_URL2 "https://huggingface.co/csukuangfj/kaldi-hmm-gmm-cmake-deps/resolve/main/kaldifst-1.7.9.tar.gz")
+  set(kaldifst_HASH "SHA256=8c653021491dca54c38ab659565edfab391418a79ae87099257863cd5664dd39")
 
   # If you don't have access to the Internet,
   # please pre-download kaldifst
   set(possible_file_locations
-    $ENV{HOME}/Downloads/kaldifst-1.7.8.tar.gz
-    ${PROJECT_SOURCE_DIR}/kaldifst-1.7.8.tar.gz
-    ${PROJECT_BINARY_DIR}/kaldifst-1.7.8.tar.gz
-    /tmp/kaldifst-1.7.8.tar.gz
-    /star-fj/fangjun/download/github/kaldifst-1.7.8.tar.gz
+    $ENV{HOME}/Downloads/kaldifst-1.7.9.tar.gz
+    ${PROJECT_SOURCE_DIR}/kaldifst-1.7.9.tar.gz
+    ${PROJECT_BINARY_DIR}/kaldifst-1.7.9.tar.gz
+    /tmp/kaldifst-1.7.9.tar.gz
+    /star-fj/fangjun/download/github/kaldifst-1.7.9.tar.gz
   )
 
   foreach(f IN LISTS possible_file_locations)

@@ -8,7 +8,7 @@
 # Inside the $ANDROID_NDK directory, you can find a binary ndk-build
 # and some other files like the file "build/cmake/android.toolchain.cmake"
 
-set -e
+set -ex
 
 log() {
   # This function is from espnet
@@ -43,6 +43,7 @@ wget -qq https://huggingface.co/csukuangfj/$model_dir/resolve/main/$model_name
 wget -qq https://huggingface.co/csukuangfj/$model_dir/resolve/main/lexicon.txt
 wget -qq https://huggingface.co/csukuangfj/$model_dir/resolve/main/tokens.txt
 wget -qq https://huggingface.co/csukuangfj/$model_dir/resolve/main/MODEL_CARD 2>/dev/null || true
+wget -qq https://huggingface.co/csukuangfj/$model_dir/resolve/main/rule.fst 2>/dev/null || true
 
 popd
 # Now we are at the project root directory
@@ -51,6 +52,11 @@ git checkout .
 pushd android/SherpaOnnxTts/app/src/main/java/com/k2fsa/sherpa/onnx
 sed -i.bak s/"modelDir = null"/"modelDir = \"$model_dir\""/ ./MainActivity.kt
 sed -i.bak s/"modelName = null"/"modelName = \"$model_name\""/ ./MainActivity.kt
+{% if tts_model.rule_fsts %}
+  rule_fsts={{ tts_model.rule_fsts }}
+  sed -i.bak s%"ruleFsts = null"%"ruleFsts = \"$rule_fsts\""% ./MainActivity.kt
+{% endif %}
+
 git diff
 popd
 

 #!/usr/bin/env python3
 
+import argparse
 from dataclasses import dataclass
+from typing import List, Optional
 
 import jinja2
-from typing import List
-import argparse
 
 
 def get_args():
@@ -29,12 +29,65 @@ class TtsModel:
     model_dir: str
     model_name: str
     lang: str  # en, zh, fr, de, etc.
+    rule_fsts: Optional[List[str]] = (None,)
 
 
 def get_all_models() -> List[TtsModel]:
     return [
+        # Chinese
+        TtsModel(
+            model_dir="vits-zh-aishell3",
+            model_name="vits-aishell3.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-aishell3/rule.fst",
+        ),
+        TtsModel(
+            model_dir="vits-zh-hf-doom",
+            model_name="doom.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-hf-doom/rule.fst",
+        ),
+        TtsModel(
+            model_dir="vits-zh-hf-echo",
+            model_name="echo.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-hf-echo/rule.fst",
+        ),
+        TtsModel(
+            model_dir="vits-zh-hf-zenyatta",
+            model_name="zenyatta.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-hf-zenyatta/rule.fst",
+        ),
+        TtsModel(
+            model_dir="vits-zh-hf-abyssinvoker",
+            model_name="abyssinvoker.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-hf-abyssinvoker/rule.fst",
+        ),
+        TtsModel(
+            model_dir="vits-zh-hf-keqing",
+            model_name="keqing.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-hf-keqing/rule.fst",
+        ),
+        TtsModel(
+            model_dir="vits-zh-hf-eula",
+            model_name="eula.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-hf-eula/rule.fst",
+        ),
+        TtsModel(
+            model_dir="vits-zh-hf-bronya",
+            model_name="bronya.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-hf-bronya/rule.fst",
+        ),
         TtsModel(
-            model_dir="vits-zh-aishell3", model_name="vits-aishell3.onnx", lang="zh"
+            model_dir="vits-zh-hf-theresa",
+            model_name="theresa.onnx",
+            lang="zh",
+            rule_fsts="vits-zh-hf-theresa/rule.fst",
         ),
         # English (US)
         # fmt: off

@@ -196,8 +196,14 @@ std::vector<int64_t> Lexicon::ConvertTextToTokenIdsChinese(
 
   std::vector<int64_t> ans;
 
-  auto sil = token2id_.at("sil");
-  auto eos = token2id_.at("eos");
+  int32_t sil = -1;
+  int32_t eos = -1;
+  if (token2id_.count("sil")) {
+    sil = token2id_.at("sil");
+    eos = token2id_.at("eos");
+  } else {
+    sil = 0;
+  }
 
   ans.push_back(sil);
 
@@ -216,7 +222,9 @@ std::vector<int64_t> Lexicon::ConvertTextToTokenIdsChinese(
     ans.insert(ans.end(), token_ids.begin(), token_ids.end());
   }
   ans.push_back(sil);
-  ans.push_back(eos);
+  if (eos != -1) {
+    ans.push_back(eos);
+  }
   return ans;
 }
 

@@ -10,15 +10,17 @@
 #include <vector>
 
 #if __ANDROID_API__ >= 9
+#include <strstream>
+
 #include "android/asset_manager.h"
 #include "android/asset_manager_jni.h"
 #endif
-
 #include "kaldifst/csrc/text-normalizer.h"
 #include "sherpa-onnx/csrc/lexicon.h"
 #include "sherpa-onnx/csrc/macros.h"
 #include "sherpa-onnx/csrc/offline-tts-impl.h"
 #include "sherpa-onnx/csrc/offline-tts-vits-model.h"
+#include "sherpa-onnx/csrc/onnx-utils.h"
 #include "sherpa-onnx/csrc/text-utils.h"
 
 namespace sherpa_onnx {
@@ -52,7 +54,17 @@ class OfflineTtsVitsImpl : public OfflineTtsImpl {
                  model_->Punctuations(), model_->Language(), config.model.debug,
                  model_->IsPiper()) {
     if (!config.rule_fsts.empty()) {
-      SHERPA_ONNX_LOGE("TODO(fangjun): Implement rule FST for Android");
+      std::vector<std::string> files;
+      SplitStringToVector(config.rule_fsts, ",", false, &files);
+      tn_list_.reserve(files.size());
+      for (const auto &f : files) {
+        if (config.model.debug) {
+          SHERPA_ONNX_LOGE("rule fst: %s", f.c_str());
+        }
+        auto buf = ReadFile(mgr, f);
+        std::istrstream is(buf.data(), buf.size());
+        tn_list_.push_back(std::make_unique<kaldifst::TextNormalizer>(is));
+      }
     }
   }
 #endif

@@ -566,6 +566,13 @@ static OfflineTtsConfig GetOfflineTtsConfig(JNIEnv *env, jobject config) {
   ans.model.provider = p;
   env->ReleaseStringUTFChars(s, p);
 
+  // for ruleFsts
+  fid = env->GetFieldID(cls, "ruleFsts", "Ljava/lang/String;");
+  s = (jstring)env->GetObjectField(config, fid);
+  p = env->GetStringUTFChars(s, nullptr);
+  ans.rule_fsts = p;
+  env->ReleaseStringUTFChars(s, p);
+
   return ans;
 }