Add Java API for text-to-speech (#811)

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

@@ -0,0 +1,68 @@
+// Copyright 2024 Xiaomi Corporation
+
+package com.k2fsa.sherpa.onnx;
+
+public class OfflineTtsConfig {
+    private final OfflineTtsModelConfig model;
+    private final String ruleFsts;
+    private final String ruleFars;
+    private final int maxNumSentences;
+
+    private OfflineTtsConfig(Builder builder) {
+        this.model = builder.model;
+        this.ruleFsts = builder.ruleFsts;
+        this.ruleFars = builder.ruleFars;
+        this.maxNumSentences = builder.maxNumSentences;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public OfflineTtsModelConfig getModel() {
+        return model;
+    }
+
+    public String getRuleFsts() {
+        return ruleFsts;
+    }
+
+    public String getRuleFars() {
+        return ruleFars;
+    }
+
+    public int getMaxNumSentences() {
+        return maxNumSentences;
+    }
+
+    public static class Builder {
+        private OfflineTtsModelConfig model = OfflineTtsModelConfig.builder().build();
+        private String ruleFsts = "";
+        private String ruleFars = "";
+        private int maxNumSentences = 1;
+
+        public OfflineTtsConfig build() {
+            return new OfflineTtsConfig(this);
+        }
+
+        public Builder setModel(OfflineTtsModelConfig model) {
+            this.model = model;
+            return this;
+        }
+
+        public Builder setRuleFsts(String ruleFsts) {
+            this.ruleFsts = ruleFsts;
+            return this;
+        }
+
+        public Builder setRuleFars(String ruleFars) {
+            this.ruleFars = ruleFars;
+            return this;
+        }
+
+        public Builder setMaxNumSentences(int maxNumSentences) {
+            this.maxNumSentences = maxNumSentences;
+            return this;
+        }
+    }
+}