Add Koltin and Java API for Kokoro TTS models (#1728)

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

@@ -0,0 +1,80 @@
+// Copyright 2025 Xiaomi Corporation
+package com.k2fsa.sherpa.onnx;
+
+public class OfflineTtsKokoroModelConfig {
+    private final String model;
+    private final String voices;
+    private final String tokens;
+    private final String dataDir;
+    private final float lengthScale;
+
+    private OfflineTtsKokoroModelConfig(Builder builder) {
+        this.model = builder.model;
+        this.voices = builder.voices;
+        this.tokens = builder.tokens;
+        this.dataDir = builder.dataDir;
+        this.lengthScale = builder.lengthScale;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public String getVoices() {
+        return voices;
+    }
+
+    public String getTokens() {
+        return tokens;
+    }
+
+    public String getDataDir() {
+        return dataDir;
+    }
+
+    public float getLengthScale() {
+        return lengthScale;
+    }
+
+
+    public static class Builder {
+        private String model = "";
+        private String voices = "";
+        private String tokens = "";
+        private String dataDir = "";
+        private float lengthScale = 1.0f;
+
+        public OfflineTtsKokoroModelConfig build() {
+            return new OfflineTtsKokoroModelConfig(this);
+        }
+
+        public Builder setModel(String model) {
+            this.model = model;
+            return this;
+        }
+
+        public Builder setVoices(String voices) {
+            this.voices = voices;
+            return this;
+        }
+
+        public Builder setTokens(String tokens) {
+            this.tokens = tokens;
+            return this;
+        }
+
+        public Builder setDataDir(String dataDir) {
+            this.dataDir = dataDir;
+            return this;
+        }
+
+        public Builder setLengthScale(float lengthScale) {
+            this.lengthScale = lengthScale;
+            return this;
+        }
+    }
+}

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

@@ -5,6 +5,7 @@ package com.k2fsa.sherpa.onnx;
 public class OfflineTtsModelConfig {
     private final OfflineTtsVitsModelConfig vits;
     private final OfflineTtsMatchaModelConfig matcha;
+    private final OfflineTtsKokoroModelConfig kokoro;
     private final int numThreads;
     private final boolean debug;
     private final String provider;
@@ -12,6 +13,7 @@ public class OfflineTtsModelConfig {
     private OfflineTtsModelConfig(Builder builder) {
         this.vits = builder.vits;
         this.matcha = builder.matcha;
+        this.kokoro = builder.kokoro;
         this.numThreads = builder.numThreads;
         this.debug = builder.debug;
         this.provider = builder.provider;
@@ -29,9 +31,14 @@ public class OfflineTtsModelConfig {
         return matcha;
     }
 
+    public OfflineTtsKokoroModelConfig getKokoro() {
+        return kokoro;
+    }
+
     public static class Builder {
         private OfflineTtsVitsModelConfig vits = OfflineTtsVitsModelConfig.builder().build();
         private OfflineTtsMatchaModelConfig matcha = OfflineTtsMatchaModelConfig.builder().build();
+        private OfflineTtsKokoroModelConfig kokoro = OfflineTtsKokoroModelConfig.builder().build();
         private int numThreads = 1;
         private boolean debug = true;
         private String provider = "cpu";
@@ -50,6 +57,11 @@ public class OfflineTtsModelConfig {
             return this;
         }
 
+        public Builder setKokoro(OfflineTtsKokoroModelConfig kokoro) {
+            this.kokoro = kokoro;
+            return this;
+        }
+
         public Builder setNumThreads(int numThreads) {
             this.numThreads = numThreads;
             return this;