Add JNI support for spoken language identification (#782)

@@ -161,10 +161,12 @@ jobs:
           ./run-vits-vctk.sh
           rm -rf vits-vctk
 
-          echo "Test vits-zh-aishell3"
-          git clone https://huggingface.co/csukuangfj/vits-zh-aishell3
+          echo "Test vits-icefall-zh-aishell3"
+          curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/tts-models/vits-icefall-zh-aishell3.tar.bz2
+          tar xvf vits-icefall-zh-aishell3.tar.bz2
+          rm vits-icefall-zh-aishell3.tar.bz2
           ./run-vits-zh-aishell3.sh
-          rm -rf vits-zh-aishell3
+          rm -rf vits-icefall-zh-aishell3*
 
           echo "Test vits-piper-en_US-lessac-medium"
           git clone https://huggingface.co/csukuangfj/vits-piper-en_US-lessac-medium

@@ -92,3 +92,4 @@ sr-data
 
 vits-icefall-*
 sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12
+spoken-language-identification-test-wavs

@@ -6,7 +6,7 @@ import android.util.Log
 private val TAG = "sherpa-onnx"
 
 data class OfflineZipformerAudioTaggingModelConfig(
-    val model: String,
+    var model: String,
 )
 
 data class AudioTaggingModelConfig(
@@ -134,4 +134,4 @@ fun getAudioTaggingConfig(type: Int, numThreads: Int=1): AudioTaggingConfig? {
     }
 
     return null
-}
\ No newline at end of file
+}

@@ -7,6 +7,7 @@ fun callback(samples: FloatArray): Unit {
 }
 
 fun main() {
+  testSpokenLanguageIdentifcation()
   testAudioTagging()
   testSpeakerRecognition()
   testTts()
@@ -14,6 +15,41 @@ fun main() {
   testAsr("zipformer2-ctc")
 }
 
+fun testSpokenLanguageIdentifcation() {
+  val config = SpokenLanguageIdentificationConfig(
+    whisper = SpokenLanguageIdentificationWhisperConfig(
+      encoder = "./sherpa-onnx-whisper-tiny/tiny-encoder.int8.onnx",
+      decoder = "./sherpa-onnx-whisper-tiny/tiny-decoder.int8.onnx",
+      tailPaddings = 33,
+    ),
+    numThreads=1,
+    debug=true,
+    provider="cpu",
+  )
+  val slid = SpokenLanguageIdentification(assetManager=null, config=config)
+
+  val testFiles = arrayOf(
+    "./spoken-language-identification-test-wavs/ar-arabic.wav",
+    "./spoken-language-identification-test-wavs/bg-bulgarian.wav",
+    "./spoken-language-identification-test-wavs/de-german.wav",
+  )
+
+  for (waveFilename in testFiles) {
+    val objArray = WaveReader.readWaveFromFile(
+        filename = waveFilename,
+    )
+    val samples: FloatArray = objArray[0] as FloatArray
+    val sampleRate: Int = objArray[1] as Int
+
+    val stream = slid.createStream()
+    stream.acceptWaveform(samples, sampleRate = sampleRate)
+    val lang = slid.compute(stream)
+    stream.release()
+    println(waveFilename)
+    println(lang)
+  }
+}
+
 fun testAudioTagging() {
   val config = AudioTaggingConfig(
       model=AudioTaggingModelConfig(

@@ -5,32 +5,22 @@ import android.util.Log
 
 private val TAG = "sherpa-onnx"
 
-data class OfflineZipformerAudioTaggingModelConfig (
-    val model: String,
+data class SpokenLanguageIdentificationWhisperConfig (
+    var encoder: String,
+    var decoder: String,
+    var tailPaddings: Int = -1,
 )
 
-data class AudioTaggingModelConfig (
-    var zipformer: OfflineZipformerAudioTaggingModelConfig,
+data class SpokenLanguageIdentificationConfig (
+    var whisper: SpokenLanguageIdentificationWhisperConfig,
     var numThreads: Int = 1,
     var debug: Boolean = false,
     var provider: String = "cpu",
 )
 
-data class AudioTaggingConfig (
-    var model: AudioTaggingModelConfig,
-    var labels: String,
-    var topK: Int = 5,
-)
-
-data class AudioEvent (
-    val name: String,
-    val index: Int,
-    val prob: Float,
-)
-
-class AudioTagging(
+class SpokenLanguageIdentification (
     assetManager: AssetManager? = null,
-    config: AudioTaggingConfig,
+    config: SpokenLanguageIdentificationConfig,
 ) {
     private var ptr: Long
 
@@ -43,10 +33,10 @@ class AudioTagging(
     }
 
     protected fun finalize() {
-      if(ptr != 0) {
-        delete(ptr)
-        ptr = 0
-      }
+        if (ptr != 0L) {
+            delete(ptr)
+            ptr = 0
+        }
     }
 
     fun release() = finalize()
@@ -56,25 +46,22 @@ class AudioTagging(
         return OfflineStream(p)
     }
 
-    // fun compute(stream: OfflineStream, topK: Int=-1): Array<AudioEvent> {
-    fun compute(stream: OfflineStream, topK: Int=-1): Array<Any> {
-      var events :Array<Any> = compute(ptr, stream.ptr, topK)
-    }
+    fun compute(stream: OfflineStream) =  compute(ptr, stream.ptr)
 
     private external fun newFromAsset(
         assetManager: AssetManager,
-        config: AudioTaggingConfig,
+        config: SpokenLanguageIdentificationConfig,
     ): Long
 
     private external fun newFromFile(
-        config: AudioTaggingConfig,
+        config: SpokenLanguageIdentificationConfig,
     ): Long
 
     private external fun delete(ptr: Long)
 
     private external fun createStream(ptr: Long): Long
 
-    private external fun compute(ptr: Long, streamPtr: Long, topK: Int): Array<Any>
+    private external fun compute(ptr: Long, streamPtr: Long): String
 
     companion object {
         init {

@@ -30,19 +30,19 @@ cd ../kotlin-api-examples
 
 function testSpeakerEmbeddingExtractor() {
   if [ ! -f ./3dspeaker_speech_eres2net_large_sv_zh-cn_3dspeaker_16k.onnx ]; then
-    wget -q https://github.com/k2-fsa/sherpa-onnx/releases/download/speaker-recongition-models/3dspeaker_speech_eres2net_large_sv_zh-cn_3dspeaker_16k.onnx
+    curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/speaker-recongition-models/3dspeaker_speech_eres2net_large_sv_zh-cn_3dspeaker_16k.onnx
   fi
 
   if [ ! -f ./speaker1_a_cn_16k.wav ]; then
-    wget -q https://github.com/csukuangfj/sr-data/raw/main/test/3d-speaker/speaker1_a_cn_16k.wav
+    curl -SL -O https://github.com/csukuangfj/sr-data/raw/main/test/3d-speaker/speaker1_a_cn_16k.wav
   fi
 
   if [ ! -f ./speaker1_b_cn_16k.wav ]; then
-    wget -q https://github.com/csukuangfj/sr-data/raw/main/test/3d-speaker/speaker1_b_cn_16k.wav
+    curl -SL -O https://github.com/csukuangfj/sr-data/raw/main/test/3d-speaker/speaker1_b_cn_16k.wav
   fi
 
   if [ ! -f ./speaker2_a_cn_16k.wav ]; then
-    wget -q https://github.com/csukuangfj/sr-data/raw/main/test/3d-speaker/speaker2_a_cn_16k.wav
+    curl -SL -O https://github.com/csukuangfj/sr-data/raw/main/test/3d-speaker/speaker2_a_cn_16k.wav
   fi
 }
 
@@ -53,7 +53,7 @@ function testAsr() {
   fi
 
   if [ ! -d ./sherpa-onnx-streaming-zipformer-ctc-multi-zh-hans-2023-12-13 ]; then
-    wget -q https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-streaming-zipformer-ctc-multi-zh-hans-2023-12-13.tar.bz2
+    curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-streaming-zipformer-ctc-multi-zh-hans-2023-12-13.tar.bz2
     tar xvf sherpa-onnx-streaming-zipformer-ctc-multi-zh-hans-2023-12-13.tar.bz2
     rm sherpa-onnx-streaming-zipformer-ctc-multi-zh-hans-2023-12-13.tar.bz2
   fi
@@ -61,7 +61,7 @@ function testAsr() {
 
 function testTts() {
   if [ ! -f ./vits-piper-en_US-amy-low/en_US-amy-low.onnx ]; then
-    wget -q https://github.com/k2-fsa/sherpa-onnx/releases/download/tts-models/vits-piper-en_US-amy-low.tar.bz2
+    curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/tts-models/vits-piper-en_US-amy-low.tar.bz2
     tar xf vits-piper-en_US-amy-low.tar.bz2
     rm vits-piper-en_US-amy-low.tar.bz2
   fi
@@ -75,7 +75,22 @@ function testAudioTagging() {
   fi
 }
 
+function testSpokenLanguageIdentification() {
+  if [ ! -f ./sherpa-onnx-whisper-tiny/tiny-encoder.int8.onnx ]; then
+    curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-whisper-tiny.tar.bz2
+    tar xvf sherpa-onnx-whisper-tiny.tar.bz2
+    rm sherpa-onnx-whisper-tiny.tar.bz2
+  fi
+
+  if [ ! -f ./spoken-language-identification-test-wavs/ar-arabic.wav ]; then
+    curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/spoken-language-identification-test-wavs.tar.bz2
+    tar xvf spoken-language-identification-test-wavs.tar.bz2
+    rm spoken-language-identification-test-wavs.tar.bz2
+  fi
+}
+
 function test() {
+  testSpokenLanguageIdentification
   testAudioTagging
   testSpeakerEmbeddingExtractor
   testAsr
@@ -90,6 +105,7 @@ kotlinc-jvm -include-runtime -d main.jar \
   OfflineStream.kt \
   SherpaOnnx.kt \
   Speaker.kt \
+  SpokenLanguageIdentification.kt \
   Tts.kt \
   WaveReader.kt \
   faked-asset-manager.kt \
@@ -101,13 +117,13 @@ java -Djava.library.path=../build/lib -jar main.jar
 
 function testTwoPass() {
   if [ ! -f ./sherpa-onnx-streaming-zipformer-en-20M-2023-02-17/encoder-epoch-99-avg-1.int8.onnx ]; then
-    wget https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-streaming-zipformer-en-20M-2023-02-17.tar.bz2
+    curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-streaming-zipformer-en-20M-2023-02-17.tar.bz2
     tar xvf sherpa-onnx-streaming-zipformer-en-20M-2023-02-17.tar.bz2
     rm sherpa-onnx-streaming-zipformer-en-20M-2023-02-17.tar.bz2
   fi
 
   if [ ! -f ./sherpa-onnx-whisper-tiny.en/tiny.en-encoder.int8.onnx ]; then
-    wget https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-whisper-tiny.en.tar.bz2
+    curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-whisper-tiny.en.tar.bz2
     tar xvf sherpa-onnx-whisper-tiny.en.tar.bz2
     rm sherpa-onnx-whisper-tiny.en.tar.bz2
   fi

@@ -13,6 +13,7 @@ add_library(sherpa-onnx-jni
   audio-tagging.cc
   jni.cc
   offline-stream.cc
+  spoken-language-identification.cc
 )
 target_link_libraries(sherpa-onnx-jni sherpa-onnx-core)
 install(TARGETS sherpa-onnx-jni DESTINATION lib)

+// sherpa-onnx/jni/spoken-language-identification.cc
+//
+// Copyright (c)  2024  Xiaomi Corporation
+
+#include "sherpa-onnx/csrc/spoken-language-identification.h"
+
+#include "sherpa-onnx/csrc/macros.h"
+#include "sherpa-onnx/jni/common.h"
+
+namespace sherpa_onnx {
+
+static SpokenLanguageIdentificationConfig GetSpokenLanguageIdentificationConfig(
+    JNIEnv *env, jobject config) {
+  SpokenLanguageIdentificationConfig ans;
+
+  jclass cls = env->GetObjectClass(config);
+  jfieldID fid = env->GetFieldID(
+      cls, "whisper",
+      "Lcom/k2fsa/sherpa/onnx/SpokenLanguageIdentificationWhisperConfig;");
+
+  jobject whisper = env->GetObjectField(config, fid);
+  jclass whisper_cls = env->GetObjectClass(whisper);
+
+  fid = env->GetFieldID(whisper_cls, "encoder", "Ljava/lang/String;");
+
+  jstring s = (jstring)env->GetObjectField(whisper, fid);
+  const char *p = env->GetStringUTFChars(s, nullptr);
+  ans.whisper.encoder = p;
+  env->ReleaseStringUTFChars(s, p);
+
+  fid = env->GetFieldID(whisper_cls, "decoder", "Ljava/lang/String;");
+  s = (jstring)env->GetObjectField(whisper, fid);
+  p = env->GetStringUTFChars(s, nullptr);
+  ans.whisper.decoder = p;
+  env->ReleaseStringUTFChars(s, p);
+
+  fid = env->GetFieldID(whisper_cls, "tailPaddings", "I");
+  ans.whisper.tail_paddings = env->GetIntField(whisper, fid);
+
+  fid = env->GetFieldID(cls, "numThreads", "I");
+  ans.num_threads = env->GetIntField(config, fid);
+
+  fid = env->GetFieldID(cls, "debug", "Z");
+  ans.debug = env->GetBooleanField(config, fid);
+
+  fid = env->GetFieldID(cls, "provider", "Ljava/lang/String;");
+  s = (jstring)env->GetObjectField(config, fid);
+  p = env->GetStringUTFChars(s, nullptr);
+  ans.provider = p;
+  env->ReleaseStringUTFChars(s, p);
+
+  return ans;
+}
+
+}  // namespace sherpa_onnx
+
+SHERPA_ONNX_EXTERN_C
+JNIEXPORT jlong JNICALL
+Java_com_k2fsa_sherpa_onnx_SpokenLanguageIdentification_newFromFile(
+    JNIEnv *env, jobject /*obj*/, jobject _config) {
+  auto config =
+      sherpa_onnx::GetSpokenLanguageIdentificationConfig(env, _config);
+  SHERPA_ONNX_LOGE("SpokenLanguageIdentification newFromFile config:\n%s",
+                   config.ToString().c_str());
+
+  if (!config.Validate()) {
+    SHERPA_ONNX_LOGE("Errors found in config!");
+    return 0;
+  }
+
+  auto tagger = new sherpa_onnx::SpokenLanguageIdentification(config);
+
+  return (jlong)tagger;
+}
+
+SHERPA_ONNX_EXTERN_C
+JNIEXPORT jlong JNICALL
+Java_com_k2fsa_sherpa_onnx_SpokenLanguageIdentification_createStream(
+    JNIEnv *env, jobject /*obj*/, jlong ptr) {
+  auto slid =
+      reinterpret_cast<sherpa_onnx::SpokenLanguageIdentification *>(ptr);
+  std::unique_ptr<sherpa_onnx::OfflineStream> s = slid->CreateStream();
+
+  // The user is responsible to free the returned pointer.
+  //
+  // See Java_com_k2fsa_sherpa_onnx_OfflineStream_delete() from
+  // ./offline-stream.cc
+  sherpa_onnx::OfflineStream *p = s.release();
+  return (jlong)p;
+}
+
+SHERPA_ONNX_EXTERN_C
+JNIEXPORT jstring JNICALL
+Java_com_k2fsa_sherpa_onnx_SpokenLanguageIdentification_compute(JNIEnv *env,
+                                                                jobject /*obj*/,
+                                                                jlong ptr,
+                                                                jlong s_ptr) {
+  sherpa_onnx::SpokenLanguageIdentification *slid =
+      reinterpret_cast<sherpa_onnx::SpokenLanguageIdentification *>(ptr);
+  sherpa_onnx::OfflineStream *s =
+      reinterpret_cast<sherpa_onnx::OfflineStream *>(s_ptr);
+  std::string lang = slid->Compute(s);
+  return env->NewStringUTF(lang.c_str());
+}