Add Java API for Matcha-TTS models. (#1673)

sherpa-onnx/java-api/src/com/k2fsa/sherpa/onnx/OfflineTtsMatchaModelConfig.java

@@ -0,0 +1,116 @@
+// Copyright 2025 Xiaomi Corporation
+
+package com.k2fsa.sherpa.onnx;
+
+public class OfflineTtsMatchaModelConfig {
+    private final String acousticModel;
+    private final String vocoder;
+    private final String lexicon;
+    private final String tokens;
+    private final String dataDir;
+    private final String dictDir;
+    private final float noiseScale;
+    private final float lengthScale;
+
+    private OfflineTtsMatchaModelConfig(Builder builder) {
+        this.acousticModel = builder.acousticModel;
+        this.vocoder = builder.vocoder;
+        this.lexicon = builder.lexicon;
+        this.tokens = builder.tokens;
+        this.dataDir = builder.dataDir;
+        this.dictDir = builder.dictDir;
+        this.noiseScale = builder.noiseScale;
+        this.lengthScale = builder.lengthScale;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public String getAcousticModel() {
+        return acousticModel;
+    }
+
+    public String getVocoder() {
+        return vocoder;
+    }
+
+    public String getLexicon() {
+        return lexicon;
+    }
+
+    public String getTokens() {
+        return tokens;
+    }
+
+    public String getDataDir() {
+        return dataDir;
+    }
+
+    public String getDictDir() {
+        return dictDir;
+    }
+
+    public float getLengthScale() {
+        return lengthScale;
+    }
+
+    public float getNoiseScale() {
+        return noiseScale;
+    }
+
+    public static class Builder {
+        private String acousticModel = "";
+        private String vocoder = "";
+        private String lexicon = "";
+        private String tokens = "";
+        private String dataDir = "";
+        private String dictDir = "";
+        private float noiseScale = 1.0f;
+        private float lengthScale = 1.0f;
+
+        public OfflineTtsMatchaModelConfig build() {
+            return new OfflineTtsMatchaModelConfig(this);
+        }
+
+        public Builder setAcousticModel(String acousticModel) {
+            this.acousticModel = acousticModel;
+            return this;
+        }
+
+        public Builder setVocoder(String vocoder) {
+            this.vocoder = vocoder;
+            return this;
+        }
+
+        public Builder setTokens(String tokens) {
+            this.tokens = tokens;
+            return this;
+        }
+
+        public Builder setLexicon(String lexicon) {
+            this.lexicon = lexicon;
+            return this;
+        }
+
+        public Builder setDataDir(String dataDir) {
+            this.dataDir = dataDir;
+            return this;
+        }
+
+        public Builder setDictDir(String dictDir) {
+            this.dictDir = dictDir;
+            return this;
+        }
+
+        public Builder setNoiseScale(float noiseScale) {
+            this.noiseScale = noiseScale;
+            return this;
+        }
+
+        public Builder setLengthScale(float lengthScale) {
+            this.lengthScale = lengthScale;
+            return this;
+        }
+    }
+}

sherpa-onnx/java-api/src/com/k2fsa/sherpa/onnx/OfflineTtsModelConfig.java

@@ -4,12 +4,14 @@ package com.k2fsa.sherpa.onnx;
 
 public class OfflineTtsModelConfig {
     private final OfflineTtsVitsModelConfig vits;
+    private final OfflineTtsMatchaModelConfig matcha;
     private final int numThreads;
     private final boolean debug;
     private final String provider;
 
     private OfflineTtsModelConfig(Builder builder) {
         this.vits = builder.vits;
+        this.matcha = builder.matcha;
         this.numThreads = builder.numThreads;
         this.debug = builder.debug;
         this.provider = builder.provider;
@@ -23,8 +25,13 @@ public class OfflineTtsModelConfig {
         return vits;
     }
 
+    public OfflineTtsMatchaModelConfig getMatcha() {
+        return matcha;
+    }
+
     public static class Builder {
         private OfflineTtsVitsModelConfig vits = OfflineTtsVitsModelConfig.builder().build();
+        private OfflineTtsMatchaModelConfig matcha = OfflineTtsMatchaModelConfig.builder().build();
         private int numThreads = 1;
         private boolean debug = true;
         private String provider = "cpu";
@@ -38,6 +45,11 @@ public class OfflineTtsModelConfig {
             return this;
         }
 
+        public Builder setMatcha(OfflineTtsMatchaModelConfig matcha) {
+            this.matcha = matcha;
+            return this;
+        }
+
         public Builder setNumThreads(int numThreads) {
             this.numThreads = numThreads;
             return this;

sherpa-onnx/java-api/src/com/k2fsa/sherpa/onnx/OfflineTtsVitsModelConfig.java

@@ -60,9 +60,9 @@ public class OfflineTtsVitsModelConfig {
     }
 
     public static class Builder {
-        private String model;
+        private String model = "";
         private String lexicon = "";
-        private String tokens;
+        private String tokens = "";
         private String dataDir = "";
         private String dictDir = "";
         private float noiseScale = 0.667f;