Add Android TTS demo (#383)

kotlin-api-examples/Tts.kt

@@ -1,112 +0,0 @@
-// Copyright (c)  2023  Xiaomi Corporation
-package com.k2fsa.sherpa.onnx
-
-import android.content.res.AssetManager
-
-data class OfflineTtsVitsModelConfig(
-    var model: String,
-    var lexicon: String,
-    var tokens: String,
-    var noiseScale: Float = 0.667f,
-    var noiseScaleW: Float = 0.8f,
-    var lengthScale: Float = 1.0f,
-)
-
-data class OfflineTtsModelConfig(
-    var vits: OfflineTtsVitsModelConfig,
-    var numThreads: Int = 1,
-    var debug: Boolean = false,
-    var provider: String = "cpu",
-)
-
-data class OfflineTtsConfig(
-    var model: OfflineTtsModelConfig,
-)
-
-class GeneratedAudio(
-    val samples : FloatArray,
-    val sampleRate: Int,
-) {
-    fun save(filename: String) = saveImpl(filename=filename, samples=samples, sampleRate=sampleRate)
-
-    private external fun saveImpl(
-        filename: String,
-        samples: FloatArray,
-        sampleRate: Int
-    ): Boolean
-}
-
-class OfflineTts(
-    assetManager: AssetManager? = null,
-    var config: OfflineTtsConfig,
-) {
-    private var ptr: Long
-
-    init {
-        if (assetManager != null) {
-            ptr = new(assetManager, config)
-        } else {
-            ptr = newFromFile(config)
-        }
-    }
-
-    fun generate(
-        text: String,
-        sid: Int = 0,
-        speed: Float = 1.0f
-    ): GeneratedAudio {
-      var objArray = generateImpl(ptr, text=text, sid=sid, speed=speed)
-      return GeneratedAudio(samples=objArray[0] as FloatArray,
-                            sampleRate=objArray[1] as Int)
-    }
-
-    fun allocate(assetManager: AssetManager? = null) {
-      if (ptr == 0L) {
-        if (assetManager != null) {
-          ptr = new(assetManager, config)
-        } else {
-          ptr = newFromFile(config)
-        }
-      }
-    }
-
-    fun free() {
-      if (ptr != 0L) {
-        delete(ptr)
-        ptr = 0
-      }
-    }
-
-    protected fun finalize() {
-        delete(ptr)
-    }
-
-    private external fun new(
-        assetManager: AssetManager,
-        config: OfflineTtsConfig,
-    ): Long
-
-    private external fun newFromFile(
-        config: OfflineTtsConfig,
-    ): Long
-
-    private external fun delete(ptr: Long)
-
-    // The returned array has two entries:
-    //  - the first entry is an 1-D float array containing audio samples.
-    //    Each sample is normalized to the range [-1, 1]
-    //  - the second entry is the sample rate
-    external fun generateImpl(
-        ptr: Long,
-        text: String,
-        sid: Int = 0,
-        speed: Float = 1.0f
-    ): Array<Any>
-
-    companion object {
-        init {
-            System.loadLibrary("sherpa-onnx-jni")
-        }
-    }
-
-}

kotlin-api-examples/Tts.kt

@@ -0,0 +1 @@
+../android/SherpaOnnxTts/app/src/main/java/com/k2fsa/sherpa/onnx/Tts.kt