offline-recognizer.cc
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// sherpa-onnx/jni/offline-recognizer.cc
//
// Copyright (c) 2024 Xiaomi Corporation
#include "sherpa-onnx/csrc/offline-recognizer.h"
#include "sherpa-onnx/csrc/macros.h"
#include "sherpa-onnx/jni/common.h"
namespace sherpa_onnx {
static OfflineRecognizerConfig GetOfflineConfig(JNIEnv *env, jobject config) {
OfflineRecognizerConfig ans;
jclass cls = env->GetObjectClass(config);
jfieldID fid;
//---------- decoding ----------
fid = env->GetFieldID(cls, "decodingMethod", "Ljava/lang/String;");
jstring s = (jstring)env->GetObjectField(config, fid);
const char *p = env->GetStringUTFChars(s, nullptr);
ans.decoding_method = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(cls, "maxActivePaths", "I");
ans.max_active_paths = env->GetIntField(config, fid);
fid = env->GetFieldID(cls, "hotwordsFile", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.hotwords_file = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(cls, "hotwordsScore", "F");
ans.hotwords_score = env->GetFloatField(config, fid);
fid = env->GetFieldID(cls, "ruleFsts", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.rule_fsts = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(cls, "ruleFars", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.rule_fars = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(cls, "blankPenalty", "F");
ans.blank_penalty = env->GetFloatField(config, fid);
//---------- feat config ----------
fid = env->GetFieldID(cls, "featConfig",
"Lcom/k2fsa/sherpa/onnx/FeatureConfig;");
jobject feat_config = env->GetObjectField(config, fid);
jclass feat_config_cls = env->GetObjectClass(feat_config);
fid = env->GetFieldID(feat_config_cls, "sampleRate", "I");
ans.feat_config.sampling_rate = env->GetIntField(feat_config, fid);
fid = env->GetFieldID(feat_config_cls, "featureDim", "I");
ans.feat_config.feature_dim = env->GetIntField(feat_config, fid);
//---------- model config ----------
fid = env->GetFieldID(cls, "modelConfig",
"Lcom/k2fsa/sherpa/onnx/OfflineModelConfig;");
jobject model_config = env->GetObjectField(config, fid);
jclass model_config_cls = env->GetObjectClass(model_config);
fid = env->GetFieldID(model_config_cls, "tokens", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(model_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.tokens = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(model_config_cls, "numThreads", "I");
ans.model_config.num_threads = env->GetIntField(model_config, fid);
fid = env->GetFieldID(model_config_cls, "debug", "Z");
ans.model_config.debug = env->GetBooleanField(model_config, fid);
fid = env->GetFieldID(model_config_cls, "provider", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(model_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.provider = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(model_config_cls, "modelType", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(model_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.model_type = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(model_config_cls, "modelingUnit", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(model_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.modeling_unit = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(model_config_cls, "bpeVocab", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(model_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.bpe_vocab = p;
env->ReleaseStringUTFChars(s, p);
// transducer
fid = env->GetFieldID(model_config_cls, "transducer",
"Lcom/k2fsa/sherpa/onnx/OfflineTransducerModelConfig;");
jobject transducer_config = env->GetObjectField(model_config, fid);
jclass transducer_config_cls = env->GetObjectClass(transducer_config);
fid = env->GetFieldID(transducer_config_cls, "encoder", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(transducer_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.transducer.encoder_filename = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(transducer_config_cls, "decoder", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(transducer_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.transducer.decoder_filename = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(transducer_config_cls, "joiner", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(transducer_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.transducer.joiner_filename = p;
env->ReleaseStringUTFChars(s, p);
// paraformer
fid = env->GetFieldID(model_config_cls, "paraformer",
"Lcom/k2fsa/sherpa/onnx/OfflineParaformerModelConfig;");
jobject paraformer_config = env->GetObjectField(model_config, fid);
jclass paraformer_config_cls = env->GetObjectClass(paraformer_config);
fid = env->GetFieldID(paraformer_config_cls, "model", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(paraformer_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.paraformer.model = p;
env->ReleaseStringUTFChars(s, p);
// whisper
fid = env->GetFieldID(model_config_cls, "whisper",
"Lcom/k2fsa/sherpa/onnx/OfflineWhisperModelConfig;");
jobject whisper_config = env->GetObjectField(model_config, fid);
jclass whisper_config_cls = env->GetObjectClass(whisper_config);
fid = env->GetFieldID(whisper_config_cls, "encoder", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(whisper_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.whisper.encoder = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(whisper_config_cls, "decoder", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(whisper_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.whisper.decoder = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(whisper_config_cls, "language", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(whisper_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.whisper.language = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(whisper_config_cls, "task", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(whisper_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.whisper.task = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(whisper_config_cls, "tailPaddings", "I");
ans.model_config.whisper.tail_paddings =
env->GetIntField(whisper_config, fid);
// moonshine
fid = env->GetFieldID(model_config_cls, "moonshine",
"Lcom/k2fsa/sherpa/onnx/OfflineMoonshineModelConfig;");
jobject moonshine_config = env->GetObjectField(model_config, fid);
jclass moonshine_config_cls = env->GetObjectClass(moonshine_config);
fid = env->GetFieldID(moonshine_config_cls, "preprocessor",
"Ljava/lang/String;");
s = (jstring)env->GetObjectField(moonshine_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.moonshine.preprocessor = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(moonshine_config_cls, "encoder", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(moonshine_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.moonshine.encoder = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(moonshine_config_cls, "uncachedDecoder",
"Ljava/lang/String;");
s = (jstring)env->GetObjectField(moonshine_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.moonshine.uncached_decoder = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(moonshine_config_cls, "cachedDecoder",
"Ljava/lang/String;");
s = (jstring)env->GetObjectField(moonshine_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.moonshine.cached_decoder = p;
env->ReleaseStringUTFChars(s, p);
// sense voice
fid = env->GetFieldID(model_config_cls, "senseVoice",
"Lcom/k2fsa/sherpa/onnx/OfflineSenseVoiceModelConfig;");
jobject sense_voice_config = env->GetObjectField(model_config, fid);
jclass sense_voice_config_cls = env->GetObjectClass(sense_voice_config);
fid = env->GetFieldID(sense_voice_config_cls, "model", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(sense_voice_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.sense_voice.model = p;
env->ReleaseStringUTFChars(s, p);
fid =
env->GetFieldID(sense_voice_config_cls, "language", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(sense_voice_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.sense_voice.language = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(sense_voice_config_cls, "useInverseTextNormalization",
"Z");
ans.model_config.sense_voice.use_itn =
env->GetBooleanField(sense_voice_config, fid);
// nemo
fid = env->GetFieldID(
model_config_cls, "nemo",
"Lcom/k2fsa/sherpa/onnx/OfflineNemoEncDecCtcModelConfig;");
jobject nemo_config = env->GetObjectField(model_config, fid);
jclass nemo_config_cls = env->GetObjectClass(nemo_config);
fid = env->GetFieldID(nemo_config_cls, "model", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(nemo_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.nemo_ctc.model = p;
env->ReleaseStringUTFChars(s, p);
fid = env->GetFieldID(model_config_cls, "teleSpeech", "Ljava/lang/String;");
s = (jstring)env->GetObjectField(model_config, fid);
p = env->GetStringUTFChars(s, nullptr);
ans.model_config.telespeech_ctc = p;
env->ReleaseStringUTFChars(s, p);
return ans;
}
} // namespace sherpa_onnx
SHERPA_ONNX_EXTERN_C
JNIEXPORT jlong JNICALL
Java_com_k2fsa_sherpa_onnx_OfflineRecognizer_newFromAsset(JNIEnv *env,
jobject /*obj*/,
jobject asset_manager,
jobject _config) {
#if __ANDROID_API__ >= 9
AAssetManager *mgr = AAssetManager_fromJava(env, asset_manager);
if (!mgr) {
SHERPA_ONNX_LOGE("Failed to get asset manager: %p", mgr);
return 0;
}
#endif
auto config = sherpa_onnx::GetOfflineConfig(env, _config);
SHERPA_ONNX_LOGE("config:\n%s", config.ToString().c_str());
auto model = new sherpa_onnx::OfflineRecognizer(
#if __ANDROID_API__ >= 9
mgr,
#endif
config);
return (jlong)model;
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT jlong JNICALL
Java_com_k2fsa_sherpa_onnx_OfflineRecognizer_newFromFile(JNIEnv *env,
jobject /*obj*/,
jobject _config) {
auto config = sherpa_onnx::GetOfflineConfig(env, _config);
SHERPA_ONNX_LOGE("config:\n%s", config.ToString().c_str());
if (!config.Validate()) {
SHERPA_ONNX_LOGE("Errors found in config!");
return 0;
}
auto model = new sherpa_onnx::OfflineRecognizer(config);
return (jlong)model;
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT void JNICALL Java_com_k2fsa_sherpa_onnx_OfflineRecognizer_setConfig(
JNIEnv *env, jobject /*obj*/, jlong ptr, jobject _config) {
auto config = sherpa_onnx::GetOfflineConfig(env, _config);
SHERPA_ONNX_LOGE("config:\n%s", config.ToString().c_str());
auto recognizer = reinterpret_cast<sherpa_onnx::OfflineRecognizer *>(ptr);
recognizer->SetConfig(config);
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT void JNICALL Java_com_k2fsa_sherpa_onnx_OfflineRecognizer_delete(
JNIEnv * /*env*/, jobject /*obj*/, jlong ptr) {
delete reinterpret_cast<sherpa_onnx::OfflineRecognizer *>(ptr);
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT jlong JNICALL
Java_com_k2fsa_sherpa_onnx_OfflineRecognizer_createStream(JNIEnv * /*env*/,
jobject /*obj*/,
jlong ptr) {
auto recognizer = reinterpret_cast<sherpa_onnx::OfflineRecognizer *>(ptr);
std::unique_ptr<sherpa_onnx::OfflineStream> s = recognizer->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 void JNICALL Java_com_k2fsa_sherpa_onnx_OfflineRecognizer_decode(
JNIEnv * /*env*/, jobject /*obj*/, jlong ptr, jlong streamPtr) {
auto recognizer = reinterpret_cast<sherpa_onnx::OfflineRecognizer *>(ptr);
auto stream = reinterpret_cast<sherpa_onnx::OfflineStream *>(streamPtr);
recognizer->DecodeStream(stream);
}
SHERPA_ONNX_EXTERN_C
JNIEXPORT jobjectArray JNICALL
Java_com_k2fsa_sherpa_onnx_OfflineRecognizer_getResult(JNIEnv *env,
jobject /*obj*/,
jlong streamPtr) {
auto stream = reinterpret_cast<sherpa_onnx::OfflineStream *>(streamPtr);
sherpa_onnx::OfflineRecognitionResult result = stream->GetResult();
// [0]: text, jstring
// [1]: tokens, array of jstring
// [2]: timestamps, array of float
// [3]: lang, jstring
// [4]: emotion, jstring
// [5]: event, jstring
jobjectArray obj_arr = (jobjectArray)env->NewObjectArray(
6, env->FindClass("java/lang/Object"), nullptr);
jstring text = env->NewStringUTF(result.text.c_str());
env->SetObjectArrayElement(obj_arr, 0, text);
jobjectArray tokens_arr = (jobjectArray)env->NewObjectArray(
result.tokens.size(), env->FindClass("java/lang/String"), nullptr);
int32_t i = 0;
for (const auto &t : result.tokens) {
jstring jtext = env->NewStringUTF(t.c_str());
env->SetObjectArrayElement(tokens_arr, i, jtext);
i += 1;
}
env->SetObjectArrayElement(obj_arr, 1, tokens_arr);
jfloatArray timestamps_arr = env->NewFloatArray(result.timestamps.size());
env->SetFloatArrayRegion(timestamps_arr, 0, result.timestamps.size(),
result.timestamps.data());
env->SetObjectArrayElement(obj_arr, 2, timestamps_arr);
// [3]: lang, jstring
// [4]: emotion, jstring
// [5]: event, jstring
env->SetObjectArrayElement(obj_arr, 3,
env->NewStringUTF(result.lang.c_str()));
env->SetObjectArrayElement(obj_arr, 4,
env->NewStringUTF(result.emotion.c_str()));
env->SetObjectArrayElement(obj_arr, 5,
env->NewStringUTF(result.event.c_str()));
return obj_arr;
}