Fix memory leak

Optimal threads configuration for runtime, a bit faster

.gitignore

@@ -29,9 +29,9 @@ cmake_install.cmake
 wheelhouse
 __pycache__
 *.egg-info
-python/dist
-python/build
-python/vosk/*.so
+bindings/python/dist
+bindings/python/build
+bindings/python/vosk/*.so
 python/test/db
 python/test/hyp
 python/test/model
@@ -41,10 +41,10 @@ python/test/wav.scp
 
 # Java
 *.class
-java/lib/model
-java/demo/model
-java/lib/build
-java/demo/build
+bindings/java/lib/model
+bindings/java/demo/model
+bindings/java/lib/build
+bindings/java/demo/build
 
 # CSharp
 *.dll

.travis.yml

@@ -1,16 +0,0 @@
-notifications:
-  email: false
-
-matrix:
-  include:
-    - sudo: required
-      services:
-        - docker
-      env: DOCKER_IMAGE=alphacep/kaldi-manylinux:latest
-
-install:
-  - docker pull $DOCKER_IMAGE
-
-script:
-  - docker run --rm -v `pwd`:/io $DOCKER_IMAGE $PRE_CMD /io/travis/build-wheels.sh
-  - ls wheelhouse/

CMakeLists.txt

@@ -1,20 +0,0 @@
-cmake_minimum_required(VERSION 3.13)
-project(vosk-api CXX)
-
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_EXTENSIONS OFF)
-
-add_library(vosk
-  src/language_model.cc
-  src/model.cc
-  src/recognizer.cc
-  src/spk_model.cc
-  src/vosk_api.cc
-)
-
-find_package(kaldi REQUIRED)
-target_link_libraries(vosk PUBLIC kaldi-base kaldi-online2 kaldi-rnnlm fstngram)
-
-include(GNUInstallDirs)
-install(TARGETS vosk DESTINATION ${CMAKE_INSTALL_LIBDIR})
-install(FILES src/vosk_api.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

android/README.md

@@ -1,3 +0,0 @@
-Vosk library for Android
-
-See for details https://alphacephei.com/vosk/android

android/build.gradle

@@ -1,65 +0,0 @@
-buildscript {
-    repositories {
-        google()
-        mavenCentral()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.0'
-        classpath 'com.vanniktech:gradle-maven-publish-plugin:0.18.0'
-    }
-}
-
-allprojects {
-    version = '0.3.45'
-}
-
-subprojects {
-
-    apply plugin: 'com.android.library'
-    apply plugin: 'maven-publish'
-    apply plugin: 'com.vanniktech.maven.publish'
-
-    plugins.withId('com.vanniktech.maven.publish') {
-        mavenPublish {
-            group = 'com.alphacephei'
-            version = version
-            sonatypeHost = 's01'
-            androidVariantToPublish = 'release'
-        }
-    }
-
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    publishing {
-        publications {
-            aar(MavenPublication) {
-                groupId 'com.alphacephei'
-                version version
-                pom {
-                    url = 'http://www.alphacephei.com.com/vosk/'
-                    licenses {
-                        license {
-                            name = 'The Apache License, Version 2.0'
-                            url = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
-                        }
-                    }
-                    developers {
-                        developer {
-                            id = 'com.alphacephei'
-                            name = 'Alpha Cephei Inc'
-                            email = 'contact@alphacephei.com'
-                        }
-                    }
-                    scm {
-                        connection = 'scm:git:git://github.com/alphacep/vosk-api.git'
-                        url = 'https://github.com/alphacep/vosk-api/'
-                    }
-                }
-            }
-        }
-    }
-
-}

android/lib/build-vosk.sh

@@ -1,135 +0,0 @@
-#!/bin/bash
-
-# Copyright 2019-2021 Alpha Cephei Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#       http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-if [ "x$ANDROID_NDK_HOME" == "x" ]; then
-    echo "ANDROID_NDK_HOME environment variable is undefined, define it with local.properties or with export"
-    exit 1
-fi
-
-if [ ! -d "$ANDROID_NDK_HOME" ]; then
-    echo "ANDROID_NDK_HOME ($ANDROID_NDK_HOME) is missing. Make sure you have ndk installed"
-    exit 1
-fi
-
-set -x
-
-OS_NAME=`echo $(uname -s) | tr '[:upper:]' '[:lower:]'`
-ANDROID_TOOLCHAIN_PATH=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/${OS_NAME}-x86_64
-WORKDIR_BASE=`pwd`/build
-PATH=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/${OS_NAME}-x86_64/bin:$PATH
-OPENFST_VERSION=1.8.0
-
-for arch in armeabi-v7a arm64-v8a x86_64 x86; do
-
-WORKDIR=${WORKDIR_BASE}/kaldi_${arch}
-
-case $arch in
-    armeabi-v7a)
-          BLAS_ARCH=ARMV7
-          HOST=arm-linux-androideabi
-          AR=llvm-ar
-          RANLIB=llvm-ranlib
-          CC=armv7a-linux-androideabi21-clang
-          CXX=armv7a-linux-androideabi21-clang++
-          ARCHFLAGS="-mfloat-abi=softfp -mfpu=neon"
-          ;;
-    arm64-v8a)
-          BLAS_ARCH=ARMV8
-          HOST=aarch64-linux-android
-          AR=llvm-ar
-          RANLIB=llvm-ranlib
-          CC=aarch64-linux-android21-clang
-          CXX=aarch64-linux-android21-clang++
-          ARCHFLAGS=""
-          ;;
-    x86_64)
-          BLAS_ARCH=ATOM
-          HOST=x86_64-linux-android
-          AR=llvm-ar
-          RANLIB=llvm-ranlib
-          CC=x86_64-linux-android21-clang
-          CXX=x86_64-linux-android21-clang++
-          ARCHFLAGS=""
-          ;;
-    x86)
-          BLAS_ARCH=ATOM
-          HOST=i686-linux-android
-          AR=llvm-ar
-          RANLIB=llvm-ranlib
-          CC=i686-linux-android21-clang
-          CXX=i686-linux-android21-clang++
-          ARCHFLAGS=""
-          ;;
-esac
-
-mkdir -p $WORKDIR/local/lib
-
-# openblas first
-cd $WORKDIR
-git clone -b v0.3.13 --single-branch https://github.com/xianyi/OpenBLAS
-make -C OpenBLAS TARGET=$BLAS_ARCH ONLY_CBLAS=1 AR=$AR CC=$CC HOSTCC=gcc ARM_SOFTFP_ABI=1 USE_THREAD=0 NUM_THREADS=1 -j4
-make -C OpenBLAS install PREFIX=$WORKDIR/local
-
-# CLAPACK
-cd $WORKDIR
-git clone -b v3.2.1  --single-branch https://github.com/alphacep/clapack
-mkdir -p clapack/BUILD && cd clapack/BUILD
-cmake -DCMAKE_C_FLAGS=$ARCHFLAGS -DCMAKE_C_COMPILER_TARGET=$HOST \
-    -DCMAKE_C_COMPILER=$CC -DCMAKE_SYSTEM_NAME=Generic -DCMAKE_AR=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/${OS_NAME}-x86_64/bin/$AR \
-    -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY \
-    -DCMAKE_CROSSCOMPILING=True ..
-make -j 8 -C F2CLIBS/libf2c
-make -j 8 -C BLAS/SRC
-make -j 8 -C SRC
-find . -name "*.a" | xargs cp -t $WORKDIR/local/lib
-
-# tools directory --> we'll only compile OpenFST
-cd $WORKDIR
-git clone https://github.com/alphacep/openfst
-cd openfst
-autoreconf -i
-CXX=$CXX CXXFLAGS="$ARCHFLAGS -O3 -DFST_NO_DYNAMIC_LINKING" ./configure --prefix=${WORKDIR}/local \
-    --enable-shared --enable-static --with-pic --disable-bin \
-    --enable-lookahead-fsts --enable-ngram-fsts --host=$HOST --build=x86-linux-gnu
-make -j 8
-make install
-
-# Kaldi itself
-cd $WORKDIR
-git clone -b vosk-android --single-branch https://github.com/alphacep/kaldi
-cd $WORKDIR/kaldi/src
-CXX=$CXX AR=$AR RANLIB=$RANLIB CXXFLAGS="$ARCHFLAGS -O3 -DFST_NO_DYNAMIC_LINKING" ./configure --use-cuda=no \
-    --mathlib=OPENBLAS_CLAPACK --shared \
-    --android-incdir=${ANDROID_TOOLCHAIN_PATH}/sysroot/usr/include \
-    --host=$HOST --openblas-root=${WORKDIR}/local \
-    --fst-root=${WORKDIR}/local --fst-version=${OPENFST_VERSION}
-make -j 8 depend
-cd $WORKDIR/kaldi/src
-make -j 8 online2 lm rnnlm
-
-# Vosk-api
-cd $WORKDIR
-mkdir -p $WORKDIR/vosk
-make -j 8 -C ${WORKDIR_BASE}/../../../src \
-    OUTDIR=$WORKDIR/vosk \
-    KALDI_ROOT=${WORKDIR}/kaldi \
-    OPENFST_ROOT=${WORKDIR}/local \
-    OPENBLAS_ROOT=${WORKDIR}/local \
-    CXX=$CXX \
-    EXTRA_LDFLAGS="-llog -static-libstdc++ -Wl,-soname,libvosk.so"
-cp $WORKDIR/vosk/libvosk.so $WORKDIR/../../src/main/jniLibs/$arch/libvosk.so
-
-done

android/lib/build.gradle

@@ -1,55 +0,0 @@
-def archiveName = "vosk-android"
-def pomName = "Vosk Android"
-def pomDescription = "Vosk speech recognition library for Android"
-
-android {
-    compileSdkVersion 29
-    defaultConfig {
-        minSdkVersion 21
-        targetSdkVersion 29
-        versionCode 6
-        versionName = version
-        archivesBaseName = archiveName
-        ndkVersion = "22.1.7171670"
-    }
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
-    }
-}
-
-task buildVosk(type: Exec) {
-    commandLine './build-vosk.sh'
-    environment ANDROID_NDK_HOME: android.getNdkDirectory()
-}
-
-dependencies {
-    api 'net.java.dev.jna:jna:4.4.0@aar'
-}
-
-//preBuild.dependsOn buildVosk
-
-publishing {
-    publications {
-        aar(MavenPublication) {
-            artifactId = archiveName
-            artifact("$buildDir/outputs/aar/$archiveName-release.aar")
-            pom {
-                name = pomName
-                description = pomDescription
-            }
-            //generate pom nodes for dependencies
-            pom.withXml {
-                def dependenciesNode = asNode().appendNode('dependencies')
-                configurations.implementation.allDependencies.each { dependency ->
-                    if (dependency.name != 'unspecified') {
-                        def dependencyNode = dependenciesNode.appendNode('dependency')
-                        dependencyNode.appendNode('groupId', dependency.group)
-                        dependencyNode.appendNode('artifactId', dependency.name)
-                        dependencyNode.appendNode('version', dependency.version)
-                    }
-                }
-            }
-        }
-    }
-}

android/lib/src/main/AndroidManifest.xml

@@ -1,3 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="org.vosk">
-</manifest>

android/lib/src/main/java/org/vosk/LibVosk.java

@@ -1,62 +0,0 @@
-package org.vosk;
-
-import com.sun.jna.Native;
-import com.sun.jna.Library;
-import com.sun.jna.Platform;
-import com.sun.jna.Pointer;
-import java.io.File;
-import java.io.InputStream;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.StandardCopyOption;
-
-public class LibVosk {
-
-    static {
-        Native.register(LibVosk.class, "vosk");
-    }
-
-    public static native void vosk_set_log_level(int level);
-
-    public static native Pointer vosk_model_new(String path);
-
-    public static native void vosk_model_free(Pointer model);
-
-    public static native Pointer vosk_spk_model_new(String path);
-
-    public static native void vosk_spk_model_free(Pointer model);
-
-    public static native Pointer vosk_recognizer_new(Model model, float sample_rate);
-
-    public static native Pointer vosk_recognizer_new_spk(Pointer model, float sample_rate, Pointer spk_model);
-
-    public static native Pointer vosk_recognizer_new_grm(Pointer model, float sample_rate, String grammar);
-
-    public static native void vosk_recognizer_set_max_alternatives(Pointer recognizer, int max_alternatives);
-
-    public static native void vosk_recognizer_set_words(Pointer recognizer, boolean words);
-
-    public static native void vosk_recognizer_set_partial_words(Pointer recognizer, boolean partial_words);
-
-    public static native void vosk_recognizer_set_spk_model(Pointer recognizer, Pointer spk_model);
-
-    public static native boolean vosk_recognizer_accept_waveform(Pointer recognizer, byte[] data, int len);
-
-    public static native boolean vosk_recognizer_accept_waveform_s(Pointer recognizer, short[] data, int len);
-
-    public static native boolean vosk_recognizer_accept_waveform_f(Pointer recognizer, float[] data, int len);
-
-    public static native String vosk_recognizer_result(Pointer recognizer);
-
-    public static native String vosk_recognizer_final_result(Pointer recognizer);
-
-    public static native String vosk_recognizer_partial_result(Pointer recognizer);
-
-    public static native void vosk_recognizer_reset(Pointer recognizer);
-
-    public static native void vosk_recognizer_free(Pointer recognizer);
-
-    public static void setLogLevel(LogLevel loglevel) {
-        vosk_set_log_level(loglevel.getValue());
-    }
-}

android/lib/src/main/java/org/vosk/Model.java

@@ -1,17 +0,0 @@
-package org.vosk;
-
-import com.sun.jna.PointerType;
-
-public class Model extends PointerType implements AutoCloseable {
-    public Model() {
-    }
-
-    public Model(String path) {
-        super(LibVosk.vosk_model_new(path));
-    }
-
-    @Override
-    public void close() {
-        LibVosk.vosk_model_free(this.getPointer());
-    }
-}

android/lib/src/main/java/org/vosk/Recognizer.java

@@ -1,66 +0,0 @@
-package org.vosk;
-
-import com.sun.jna.PointerType;
-
-public class Recognizer extends PointerType implements AutoCloseable {
-    public Recognizer(Model model, float sampleRate) {
-        super(LibVosk.vosk_recognizer_new(model, sampleRate));
-    }
-
-    public Recognizer(Model model, float sampleRate, SpeakerModel spkModel) {
-        super(LibVosk.vosk_recognizer_new_spk(model.getPointer(), sampleRate, spkModel.getPointer()));
-    }
-
-    public Recognizer(Model model, float sampleRate, String grammar) {
-        super(LibVosk.vosk_recognizer_new_grm(model.getPointer(), sampleRate, grammar));
-    }
-
-    public void setMaxAlternatives(int maxAlternatives) {
-        LibVosk.vosk_recognizer_set_max_alternatives(this.getPointer(), maxAlternatives);
-    }
-
-    public void setWords(boolean words) {
-        LibVosk.vosk_recognizer_set_words(this.getPointer(), words);
-    }
-
-    public void setPartialWords(boolean partial_words) {
-        LibVosk.vosk_recognizer_set_partial_words(this.getPointer(), partial_words);
-    }
-
-    public void setSpeakerModel(SpeakerModel spkModel) {
-        LibVosk.vosk_recognizer_set_spk_model(this.getPointer(), spkModel.getPointer());
-    }
-
-    public boolean acceptWaveForm(byte[] data, int len) {
-        return LibVosk.vosk_recognizer_accept_waveform(this.getPointer(), data, len);
-    }
-
-    public boolean acceptWaveForm(short[] data, int len) {
-        return LibVosk.vosk_recognizer_accept_waveform_s(this.getPointer(), data, len);
-    }
-
-    public boolean acceptWaveForm(float[] data, int len) {
-        return LibVosk.vosk_recognizer_accept_waveform_f(this.getPointer(), data, len);
-    }
-
-    public String getResult() {
-        return LibVosk.vosk_recognizer_result(this.getPointer());
-    }
-
-    public String getPartialResult() {
-        return LibVosk.vosk_recognizer_partial_result(this.getPointer());
-    }
-
-    public String getFinalResult() {
-        return LibVosk.vosk_recognizer_final_result(this.getPointer());
-    }
-
-    public void reset() {
-        LibVosk.vosk_recognizer_reset(this.getPointer());
-    }
-
-    @Override
-    public void close() {
-        LibVosk.vosk_recognizer_free(this.getPointer());
-    }
-}

android/lib/src/main/java/org/vosk/SpeakerModel.java

@@ -1,17 +0,0 @@
-package org.vosk;
-
-import com.sun.jna.PointerType;
-
-public class SpeakerModel extends PointerType implements AutoCloseable {
-    public SpeakerModel() {
-    }
-
-    public SpeakerModel(String path) {
-        super(LibVosk.vosk_spk_model_new(path));
-    }
-
-    @Override
-    public void close() {
-        LibVosk.vosk_spk_model_free(this.getPointer());
-    }
-}

android/lib/src/main/java/org/vosk/android/RecognitionListener.java

@@ -1,46 +0,0 @@
-// Copyright 2019 Alpha Cephei Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//       http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package org.vosk.android;
-
-/**
- * Interface to receive recognition results
- */
-public interface RecognitionListener {
-
-    /**
-     * Called when partial recognition result is available.
-     */
-    void onPartialResult(String hypothesis);
-
-    /**
-     * Called after silence occured.
-     */
-    void onResult(String hypothesis);
-
-    /**
-     * Called after stream end.
-     */
-    void onFinalResult(String hypothesis);
-
-    /**
-     * Called when an error occurs.
-     */
-    void onError(Exception exception);
-
-    /**
-     * Called after timeout expired
-     */
-    void onTimeout();
-}

android/lib/src/main/java/org/vosk/android/SpeechService.java

@@ -1,257 +0,0 @@
-// Copyright 2019 Alpha Cephei Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//       http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package org.vosk.android;
-
-import android.media.AudioFormat;
-import android.media.AudioRecord;
-import android.media.MediaRecorder.AudioSource;
-import android.os.Handler;
-import android.os.Looper;
-
-import org.vosk.Recognizer;
-
-import java.io.IOException;
-
-/**
- * Service that records audio in a thread, passes it to a recognizer and emits
- * recognition results. Recognition events are passed to a client using
- * {@link RecognitionListener}
- */
-public class SpeechService {
-
-    private final Recognizer recognizer;
-
-    private final int sampleRate;
-    private final static float BUFFER_SIZE_SECONDS = 0.2f;
-    private final int bufferSize;
-    private final AudioRecord recorder;
-
-    private RecognizerThread recognizerThread;
-
-    private final Handler mainHandler = new Handler(Looper.getMainLooper());
-
-    /**
-     * Creates speech service. Service holds the AudioRecord object, so you
-     * need to call {@link #shutdown()} in order to properly finalize it.
-     *
-     * @throws IOException thrown if audio recorder can not be created for some reason.
-     */
-    public SpeechService(Recognizer recognizer, float sampleRate) throws IOException {
-        this.recognizer = recognizer;
-        this.sampleRate = (int) sampleRate;
-
-        bufferSize = Math.round(this.sampleRate * BUFFER_SIZE_SECONDS);
-        recorder = new AudioRecord(
-                AudioSource.VOICE_RECOGNITION, this.sampleRate,
-                AudioFormat.CHANNEL_IN_MONO,
-                AudioFormat.ENCODING_PCM_16BIT, bufferSize * 2);
-
-        if (recorder.getState() == AudioRecord.STATE_UNINITIALIZED) {
-            recorder.release();
-            throw new IOException(
-                    "Failed to initialize recorder. Microphone might be already in use.");
-        }
-    }
-
-
-    /**
-     * Starts recognition. Does nothing if recognition is active.
-     *
-     * @return true if recognition was actually started
-     */
-    public boolean startListening(RecognitionListener listener) {
-        if (null != recognizerThread)
-            return false;
-
-        recognizerThread = new RecognizerThread(listener);
-        recognizerThread.start();
-        return true;
-    }
-
-    /**
-     * Starts recognition. After specified timeout listening stops and the
-     * endOfSpeech signals about that. Does nothing if recognition is active.
-     * <p>
-     * timeout - timeout in milliseconds to listen.
-     *
-     * @return true if recognition was actually started
-     */
-    public boolean startListening(RecognitionListener listener, int timeout) {
-        if (null != recognizerThread)
-            return false;
-
-        recognizerThread = new RecognizerThread(listener, timeout);
-        recognizerThread.start();
-        return true;
-    }
-
-    private boolean stopRecognizerThread() {
-        if (null == recognizerThread)
-            return false;
-
-        try {
-            recognizerThread.interrupt();
-            recognizerThread.join();
-        } catch (InterruptedException e) {
-            // Restore the interrupted status.
-            Thread.currentThread().interrupt();
-        }
-
-        recognizerThread = null;
-        return true;
-    }
-
-    /**
-     * Stops recognition. Listener should receive final result if there is
-     * any. Does nothing if recognition is not active.
-     *
-     * @return true if recognition was actually stopped
-     */
-    public boolean stop() {
-        return stopRecognizerThread();
-    }
-
-    /**
-     * Cancel recognition. Do not post any new events, simply cancel processing.
-     * Does nothing if recognition is not active.
-     *
-     * @return true if recognition was actually stopped
-     */
-    public boolean cancel() {
-        if (recognizerThread != null) {
-            recognizerThread.setPause(true);
-        }
-        return stopRecognizerThread();
-    }
-
-    /**
-     * Shutdown the recognizer and release the recorder
-     */
-    public void shutdown() {
-        recorder.release();
-    }
-
-    public void setPause(boolean paused) {
-        if (recognizerThread != null) {
-            recognizerThread.setPause(paused);
-        }
-    }
-
-    /**
-     * Resets recognizer in a thread, starts recognition over again
-     */
-    public void reset() {
-        if (recognizerThread != null) {
-            recognizerThread.reset();
-        }
-    }
-
-    private final class RecognizerThread extends Thread {
-
-        private int remainingSamples;
-        private final int timeoutSamples;
-        private final static int NO_TIMEOUT = -1;
-        private volatile boolean paused = false;
-        private volatile boolean reset = false;
-
-        RecognitionListener listener;
-
-        public RecognizerThread(RecognitionListener listener, int timeout) {
-            this.listener = listener;
-            if (timeout != NO_TIMEOUT)
-                this.timeoutSamples = timeout * sampleRate / 1000;
-            else
-                this.timeoutSamples = NO_TIMEOUT;
-            this.remainingSamples = this.timeoutSamples;
-        }
-
-        public RecognizerThread(RecognitionListener listener) {
-            this(listener, NO_TIMEOUT);
-        }
-
-        /**
-         * When we are paused, don't process audio by the recognizer and don't emit
-         * any listener results
-         *
-         * @param paused the status of pause
-         */
-        public void setPause(boolean paused) {
-            this.paused = paused;
-        }
-
-        /**
-         * Set reset state to signal reset of the recognizer and start over
-         */
-        public void reset() {
-            this.reset = true;
-        }
-
-        @Override
-        public void run() {
-
-            recorder.startRecording();
-            if (recorder.getRecordingState() == AudioRecord.RECORDSTATE_STOPPED) {
-                recorder.stop();
-                IOException ioe = new IOException(
-                        "Failed to start recording. Microphone might be already in use.");
-                mainHandler.post(() -> listener.onError(ioe));
-            }
-
-            short[] buffer = new short[bufferSize];
-
-            while (!interrupted()
-                    && ((timeoutSamples == NO_TIMEOUT) || (remainingSamples > 0))) {
-                int nread = recorder.read(buffer, 0, buffer.length);
-
-                if (paused) {
-                    continue;
-                }
-
-                if (reset) {
-                    recognizer.reset();
-                    reset = false;
-                }
-
-                if (nread < 0)
-                    throw new RuntimeException("error reading audio buffer");
-
-                if (recognizer.acceptWaveForm(buffer, nread)) {
-                    final String result = recognizer.getResult();
-                    mainHandler.post(() -> listener.onResult(result));
-                } else {
-                    final String partialResult = recognizer.getPartialResult();
-                    mainHandler.post(() -> listener.onPartialResult(partialResult));
-                }
-
-                if (timeoutSamples != NO_TIMEOUT) {
-                    remainingSamples = remainingSamples - nread;
-                }
-            }
-
-            recorder.stop();
-
-            if (!paused) {
-                // If we met timeout signal that speech ended
-                if (timeoutSamples != NO_TIMEOUT && remainingSamples <= 0) {
-                    mainHandler.post(() -> listener.onTimeout());
-                } else {
-                    final String finalResult = recognizer.getFinalResult();
-                    mainHandler.post(() -> listener.onFinalResult(finalResult));
-                }
-            }
-
-        }
-    }
-}

android/lib/src/main/java/org/vosk/android/SpeechStreamService.java

@@ -1,165 +0,0 @@
-// Copyright 2019 Alpha Cephei Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//       http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package org.vosk.android;
-
-import android.os.Handler;
-import android.os.Looper;
-
-import org.vosk.Recognizer;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * Service that recognizes stream audio in a  thread, passes it to a recognizer and emits
- * recognition results. Recognition events are passed to a client using
- * {@link RecognitionListener}
- */
-public class SpeechStreamService {
-
-    private final Recognizer recognizer;
-    private final InputStream inputStream;
-    private final int sampleRate;
-    private final static float BUFFER_SIZE_SECONDS = 0.2f;
-    private final int bufferSize;
-
-    private Thread recognizerThread;
-
-    private final Handler mainHandler = new Handler(Looper.getMainLooper());
-
-    /**
-     * Creates speech service.
-     **/
-    public SpeechStreamService(Recognizer recognizer, InputStream inputStream, float sampleRate) {
-        this.recognizer = recognizer;
-        this.sampleRate = (int) sampleRate;
-        this.inputStream = inputStream;
-        bufferSize = Math.round(this.sampleRate * BUFFER_SIZE_SECONDS * 2);
-    }
-
-    /**
-     * Starts recognition. Does nothing if recognition is active.
-     *
-     * @return true if recognition was actually started
-     */
-    public boolean start(RecognitionListener listener) {
-        if (null != recognizerThread)
-            return false;
-
-        recognizerThread = new RecognizerThread(listener);
-        recognizerThread.start();
-        return true;
-    }
-
-    /**
-     * Starts recognition. After specified timeout listening stops and the
-     * endOfSpeech signals about that. Does nothing if recognition is active.
-     * <p>
-     * timeout - timeout in milliseconds to listen.
-     *
-     * @return true if recognition was actually started
-     */
-    public boolean start(RecognitionListener listener, int timeout) {
-        if (null != recognizerThread)
-            return false;
-
-        recognizerThread = new RecognizerThread(listener, timeout);
-        recognizerThread.start();
-        return true;
-    }
-
-    /**
-     * Stops recognition. All listeners should receive final result if there is
-     * any. Does nothing if recognition is not active.
-     *
-     * @return true if recognition was actually stopped
-     */
-    public boolean stop() {
-        if (null == recognizerThread)
-            return false;
-
-        try {
-            recognizerThread.interrupt();
-            recognizerThread.join();
-        } catch (InterruptedException e) {
-            // Restore the interrupted status.
-            Thread.currentThread().interrupt();
-        }
-
-        recognizerThread = null;
-        return true;
-    }
-
-    private final class RecognizerThread extends Thread {
-
-        private int remainingSamples;
-        private final int timeoutSamples;
-        private final static int NO_TIMEOUT = -1;
-        RecognitionListener listener;
-
-        public RecognizerThread(RecognitionListener listener, int timeout) {
-            this.listener = listener;
-            if (timeout != NO_TIMEOUT)
-                this.timeoutSamples = timeout * sampleRate / 1000;
-            else
-                this.timeoutSamples = NO_TIMEOUT;
-            this.remainingSamples = this.timeoutSamples;
-        }
-
-        public RecognizerThread(RecognitionListener listener) {
-            this(listener, NO_TIMEOUT);
-        }
-
-        @Override
-        public void run() {
-
-            byte[] buffer = new byte[bufferSize];
-
-            while (!interrupted()
-                    && ((timeoutSamples == NO_TIMEOUT) || (remainingSamples > 0))) {
-                try {
-                    int nread = inputStream.read(buffer, 0, buffer.length);
-                    if (nread < 0) {
-                        break;
-                    } else {
-                        boolean isSilence = recognizer.acceptWaveForm(buffer, nread);
-                        if (isSilence) {
-                            final String result = recognizer.getResult();
-                            mainHandler.post(() -> listener.onResult(result));
-                        } else {
-                            final String partialResult = recognizer.getPartialResult();
-                            mainHandler.post(() -> listener.onPartialResult(partialResult));
-                        }
-                    }
-
-                    if (timeoutSamples != NO_TIMEOUT) {
-                        remainingSamples = remainingSamples - nread;
-                    }
-
-                } catch (IOException e) {
-                    mainHandler.post(() -> listener.onError(e));
-                }
-            }
-
-            // If we met timeout signal that speech ended
-            if (timeoutSamples != NO_TIMEOUT && remainingSamples <= 0) {
-                mainHandler.post(() -> listener.onTimeout());
-            } else {
-                final String finalResult = recognizer.getFinalResult();
-                mainHandler.post(() -> listener.onFinalResult(finalResult));
-            }
-        }
-    }
-}

android/lib/src/main/java/org/vosk/android/StorageService.java

@@ -1,150 +0,0 @@
-// Copyright 2019 Alpha Cephei Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//       http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package org.vosk.android;
-
-import android.content.Context;
-import android.content.res.AssetManager;
-import android.os.Environment;
-import android.os.Handler;
-import android.os.Looper;
-import android.util.Log;
-
-import org.vosk.Model;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.OutputStream;
-import java.util.concurrent.Executor;
-import java.util.concurrent.Executors;
-
-/**
- * Provides utility methods to sync model files to external storage to allow
- * C++ code access them. Relies on file named "uuid" to track updates.
- */
-public class StorageService {
-
-    protected static final String TAG = StorageService.class.getSimpleName();
-
-    public interface Callback<R> {
-        void onComplete(R result);
-    }
-
-    public static void unpack(Context context, String sourcePath, final String targetPath, final Callback<Model> completeCallback, final Callback<IOException> errorCallback) {
-        Executor executor = Executors.newSingleThreadExecutor(); // change according to your requirements
-        Handler handler = new Handler(Looper.getMainLooper());
-        executor.execute(() -> {
-            try {
-                final String outputPath = sync(context, sourcePath, targetPath);
-                Model model = new Model(outputPath);
-                handler.post(() -> completeCallback.onComplete(model));
-            } catch (final IOException e) {
-                handler.post(() -> errorCallback.onComplete(e));
-            }
-        });
-    }
-
-    public static String sync(Context context, String sourcePath, String targetPath) throws IOException {
-
-        AssetManager assetManager = context.getAssets();
-
-        File externalFilesDir = context.getExternalFilesDir(null);
-        if (externalFilesDir == null) {
-            throw new IOException("cannot get external files dir, "
-                    + "external storage state is " + Environment.getExternalStorageState());
-        }
-
-        File targetDir = new File(externalFilesDir, targetPath);
-        String resultPath = new File(targetDir, sourcePath).getAbsolutePath();
-        String sourceUUID = readLine(assetManager.open(sourcePath + "/uuid"));
-        try {
-            String targetUUID = readLine(new FileInputStream(new File(targetDir, sourcePath + "/uuid")));
-            if (targetUUID.equals(sourceUUID)) return resultPath;
-        } catch (FileNotFoundException e) {
-            // ignore
-        }
-        deleteContents(targetDir);
-
-        copyAssets(assetManager, sourcePath, targetDir);
-
-        // Copy uuid
-        copyFile(assetManager, sourcePath + "/uuid", targetDir);
-
-        return resultPath;
-    }
-
-    private static String readLine(InputStream is) throws IOException {
-        return new BufferedReader(new InputStreamReader(is)).readLine();
-    }
-
-    private static boolean deleteContents(File dir) {
-        File[] files = dir.listFiles();
-        boolean success = true;
-        if (files != null) {
-            for (File file : files) {
-                if (file.isDirectory()) {
-                    success &= deleteContents(file);
-                }
-                if (!file.delete()) {
-                    success = false;
-                }
-            }
-        }
-        return success;
-    }
-
-    private static void copyAssets(AssetManager assetManager, String path, File outPath) throws IOException {
-        String[] assets = assetManager.list(path);
-        if (assets == null) {
-            return;
-        }
-        if (assets.length == 0) {
-            if (!path.endsWith("uuid"))
-                copyFile(assetManager, path, outPath);
-        } else {
-            File dir = new File(outPath, path);
-            if (!dir.exists()) {
-                Log.v(TAG, "Making directory " + dir.getAbsolutePath());
-                if (!dir.mkdirs()) {
-                    Log.v(TAG, "Failed to create directory " + dir.getAbsolutePath());
-                }
-            }
-            for (String asset : assets) {
-                copyAssets(assetManager, path + "/" + asset, outPath);
-            }
-        }
-    }
-
-    private static void copyFile(AssetManager assetManager, String fileName, File outPath) throws IOException {
-        InputStream in;
-
-        Log.v(TAG, "Copy " + fileName + " to " + outPath);
-        in = assetManager.open(fileName);
-        OutputStream out = new FileOutputStream(outPath + "/" + fileName);
-
-        byte[] buffer = new byte[4000];
-        int read;
-        while ((read = in.read(buffer)) != -1) {
-            out.write(buffer, 0, read);
-        }
-        in.close();
-        out.close();
-    }
-}

android/model-en/build.gradle

@@ -1,47 +0,0 @@
-def archiveName = "vosk-model-en"
-def pomName = "Vosk English Model"
-def pomDescription = "Small English model for Android"
-
-android {
-    compileSdkVersion 29
-    defaultConfig {
-        minSdkVersion 21
-        targetSdkVersion 29
-        versionCode 6
-        versionName = version
-        archivesBaseName = archiveName
-    }
-    buildFeatures {
-        buildConfig = false
-    }
-    sourceSets {
-        main {
-            assets.srcDirs += "$buildDir/generated/assets"
-        }
-    }
-}
-
-tasks.register('genUUID') {
-    def uuid = UUID.randomUUID().toString()
-    def odir = file("$buildDir/generated/assets/model-en-us")
-    def ofile = file("$odir/uuid")
-    doLast {
-        mkdir odir
-        ofile.text = uuid
-    }
-}
-
-preBuild.dependsOn(genUUID)
-
-publishing {
-    publications {
-        aar(MavenPublication) {
-            artifactId = archiveName
-            artifact("$buildDir/outputs/aar/$archiveName-release.aar")
-            pom {
-                name = pomName
-                description = pomDescription
-            }
-        }
-    }
-}

android/model-en/src/main/AndroidManifest.xml

@@ -1,3 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="org.vosk.model.en">
-</manifest>

android/model-en/src/main/assets/model-en-us/README

@@ -1,7 +0,0 @@
-US English model for mobile Vosk applications
-
-Copyright 2020 Alpha Cephei Inc
-
-Accuracy: 10.38 (tedlium test) 9.85 (librispeech test-clean)
-Speed: 0.11xRT (desktop)
-Latency: 0.15s (right context)

android/settings.gradle

@@ -1 +0,0 @@
-include ':lib', ':model-en'

bindings/c/Makefile

@@ -0,0 +1,16 @@
+CFLAGS=-I../../src
+LDFLAGS=-L../../src -lvosk -ldl -lpthread -Wl,-rpath,../../src
+
+all: test_vosk test_vosk_multi
+
+test_vosk: test_vosk.o
+	gcc $^ -o $@ $(LDFLAGS)
+
+test_vosk_multi: test_vosk_multi.o
+	gcc $^ -o $@ $(LDFLAGS) -lpthread
+
+%.o: %.c
+	gcc $(CFLAGS) -c -o $@ $<
+
+clean:
+	rm -f *.o *.a test_vosk test_vosk_multi

bindings/c/test_vosk.c

@@ -0,0 +1,37 @@
+#include <vosk_api.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+    FILE *wavin;
+    char buf[3200];
+    int nread, final;
+
+    VoskModel *model = vosk_model_new("vosk-model-small-ru");
+    VoskRecognizer *recognizer = vosk_recognizer_new(model, 16000.0);
+
+    wavin = fopen("test.wav", "rb");
+    fseek(wavin, 44, SEEK_SET);
+    while (!feof(wavin)) {
+         nread = fread(buf, 1, sizeof(buf), wavin);
+         vosk_recognizer_accept_waveform(recognizer, buf, nread);
+         while (vosk_recognizer_get_num_pending_results(recognizer) > 0)
+             sleep(0.05);
+         while (!vosk_recognizer_results_empty(recognizer)) {
+             printf("%s\n", vosk_recognizer_result_front(recognizer));
+             vosk_recognizer_result_pop(recognizer);
+         }
+    }
+    vosk_recognizer_flush(recognizer);
+    while (vosk_recognizer_get_num_pending_results(recognizer) > 0)
+         sleep(0.05);
+    while (!vosk_recognizer_results_empty(recognizer)) {
+         printf("%s\n", vosk_recognizer_result_front(recognizer));
+         vosk_recognizer_result_pop(recognizer);
+    }
+
+    vosk_recognizer_free(recognizer);
+    vosk_model_free(model);
+    fclose(wavin);
+    return 0;
+}

bindings/c/test_vosk_multi.c

@@ -0,0 +1,82 @@
+#include <vosk_api.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <time.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define NUM_THREADS 10
+#define NUM_FILES_PER_THREAD 3
+#define NUM_FILES 400
+#define MAX_FILE 100
+
+VoskModel *model;
+char infiles[NUM_FILES][MAX_FILE];
+pthread_t thread_ids[NUM_THREADS];
+
+static void *worker(void *data) {
+    int j;
+
+    for (j = 0; j < NUM_FILES_PER_THREAD; j++) {
+        FILE *wavin;
+        char buf[4000];
+        int nread;
+        VoskRecognizer *recognizer = vosk_recognizer_new(model, 16000.0);
+        int foffset = rand() % NUM_FILES;
+
+        wavin = fopen(infiles[foffset], "rb");
+        fseek(wavin, 44, SEEK_SET);
+        while (!feof(wavin)) {
+             nread = fread(buf, 1, sizeof(buf), wavin);
+             vosk_recognizer_accept_waveform(recognizer, buf, nread);
+             while (vosk_recognizer_get_num_pending_results(recognizer) > 0)
+                 sleep(0.05);
+             while (!vosk_recognizer_results_empty(recognizer)) {
+                 printf("%s\n", vosk_recognizer_result_front(recognizer));
+                 vosk_recognizer_result_pop(recognizer);
+             }
+        }
+        vosk_recognizer_flush(recognizer);
+        while (vosk_recognizer_get_num_pending_results(recognizer) > 0)
+             sleep(0.05);
+        while (!vosk_recognizer_results_empty(recognizer)) {
+             printf("%s\n", vosk_recognizer_result_front(recognizer));
+             vosk_recognizer_result_pop(recognizer);
+        }
+
+        vosk_recognizer_free(recognizer);
+        fclose(wavin);
+    }
+}
+
+void read_file_list() {
+    FILE* infile;
+    infile = fopen("file.list", "r");
+    int i = 0;
+
+    while(i < NUM_FILES, fgets(infiles[i], MAX_FILE, infile)) {
+        infiles[i][strlen(infiles[i]) - 1] = 0;
+        printf("%s\n", infiles[i]);
+        i++;
+    }
+
+    fclose(infile);
+}
+
+int main() {
+    int i;
+    srand(0);
+
+    read_file_list();
+
+    model = vosk_model_new("vosk-model-small-ru");
+    for (i = 0; i < NUM_THREADS; i++) {
+        pthread_create(&thread_ids[i], NULL, worker, NULL);
+    }
+    for (i = 0; i < NUM_THREADS; i++) {
+        pthread_join(thread_ids[i], NULL);
+    }
+    vosk_model_free(model);
+    return 0;
+}

bindings/java/lib/build.gradle

@@ -16,7 +16,7 @@ repositories {
 
 archivesBaseName = 'vosk'
 group = 'com.alphacephei'
-version = '0.3.45'
+version = '0.4.0'
 
 mavenPublish {
     group = 'com.alphacephei'
@@ -25,7 +25,7 @@ mavenPublish {
 }
 
 dependencies {
-    api group: 'net.java.dev.jna', name: 'jna', version: '5.7.0'
+    api group: 'net.java.dev.jna', name: 'jna', version: '5.13.0'
     testImplementation 'junit:junit:4.13'
 }
 

bindings/java/lib/src/main/java/org/vosk/LibVosk.java

@@ -1,7 +1,6 @@
 package org.vosk;
 
 import com.sun.jna.Native;
-import com.sun.jna.Library;
 import com.sun.jna.Platform;
 import com.sun.jna.Pointer;
 import java.io.File;
@@ -13,8 +12,9 @@ import java.nio.file.StandardCopyOption;
 public class LibVosk {
 
     private static void unpackDll(File targetDir, String lib) throws IOException {
-        InputStream source = LibVosk.class.getResourceAsStream("/win32-x86-64/" + lib + ".dll");
-        Files.copy(source, new File(targetDir, lib + ".dll").toPath(), StandardCopyOption.REPLACE_EXISTING);
+        try (InputStream source = LibVosk.class.getResourceAsStream("/win32-x86-64/" + lib + ".dll")) {
+            Files.copy(source, new File(targetDir, lib + ".dll").toPath(), StandardCopyOption.REPLACE_EXISTING);
+        }
     }
 
     static {
@@ -23,7 +23,7 @@ public class LibVosk {
             // We have to unpack dependencies
             try {
                 // To get a tmp folder we unpack small library and mark it for deletion
-                File tmpFile = Native.extractFromResourcePath("/win32-x86-64/empty");
+                File tmpFile = Native.extractFromResourcePath("/win32-x86-64/empty", LibVosk.class.getClassLoader());
                 File tmpDir = tmpFile.getParentFile();
                 new File(tmpDir, tmpFile.getName() + ".x").createNewFile();
 
@@ -48,40 +48,38 @@ public class LibVosk {
 
     public static native void vosk_model_free(Pointer model);
 
-    public static native Pointer vosk_spk_model_new(String path);
-
-    public static native void vosk_spk_model_free(Pointer model);
-
     public static native Pointer vosk_recognizer_new(Model model, float sample_rate);
 
-    public static native Pointer vosk_recognizer_new_spk(Pointer model, float sample_rate, Pointer spk_model);
+    public static native void vosk_recognizer_accept_waveform(Pointer recognizer, byte[] data, int len);
 
-    public static native Pointer vosk_recognizer_new_grm(Pointer model, float sample_rate, String grammar);
+    public static native void vosk_recognizer_accept_waveform_s(Pointer recognizer, short[] data, int len);
 
-    public static native void vosk_recognizer_set_max_alternatives(Pointer recognizer, int max_alternatives);
+    public static native void vosk_recognizer_accept_waveform_f(Pointer recognizer, float[] data, int len);
 
-    public static native void vosk_recognizer_set_words(Pointer recognizer, boolean words);
+    public static native void vosk_recognizer_flush(Pointer recognizer);
 
-    public static native void vosk_recognizer_set_partial_words(Pointer recognizer, boolean partial_words);
+    public static native String vosk_recognizer_result_front(Pointer recognizer);
 
-    public static native void vosk_recognizer_set_spk_model(Pointer recognizer, Pointer spk_model);
+    public static native void vosk_recognizer_result_pop(Pointer recognizer);
 
-    public static native boolean vosk_recognizer_accept_waveform(Pointer recognizer, byte[] data, int len);
+    public static native int vosk_recognizer_get_num_pending_results(Pointer recognizer);
 
-    public static native boolean vosk_recognizer_accept_waveform_s(Pointer recognizer, short[] data, int len);
+    public static native int vosk_recognizer_get_num_results(Pointer recognizer);
 
-    public static native boolean vosk_recognizer_accept_waveform_f(Pointer recognizer, float[] data, int len);
-
-    public static native String vosk_recognizer_result(Pointer recognizer);
-
-    public static native String vosk_recognizer_final_result(Pointer recognizer);
-
-    public static native String vosk_recognizer_partial_result(Pointer recognizer);
+    public static native int vosk_recognizer_results_empty(Pointer recognizer);
 
     public static native void vosk_recognizer_reset(Pointer recognizer);
 
     public static native void vosk_recognizer_free(Pointer recognizer);
 
+    /**
+     * Set log level for Kaldi messages.
+     *
+     *  @param loglevel the level
+     *     0 - default value to print info and error messages but no debug
+     *     less than 0 - don't print info messages
+     *     greater than 0 - more verbose mode
+     */
     public static void setLogLevel(LogLevel loglevel) {
         vosk_set_log_level(loglevel.getValue());
     }

bindings/java/lib/src/main/java/org/vosk/Recognizer.java

@@ -0,0 +1,113 @@
+package org.vosk;
+
+import com.sun.jna.PointerType;
+import java.io.IOException;
+
+public class Recognizer extends PointerType implements AutoCloseable {
+    /**
+     * Creates the recognizer object.
+     *
+     * The recognizers process the speech and return text using shared model data
+     * @param model       VoskModel containing static data for recognizer. Model can be
+     *                    shared across recognizers, even running in different threads.
+     * @param sampleRate The sample rate of the audio you are going to feed into the recognizer.
+     *                    Make sure this rate matches the audio content, it is a common
+     *                    issue causing accuracy problems.
+     * @throws IOException if the recognizer could not be created
+     */
+    public Recognizer(Model model, float sampleRate) throws IOException {
+        super(LibVosk.vosk_recognizer_new(model, sampleRate));
+
+        if (getPointer() == null) {
+            throw new IOException("Failed to create a recognizer");
+        }
+    }
+
+    /**
+     * Accept and process new chunk of voice data.
+     *
+     *  @param data - audio data in PCM 16-bit mono format
+     *  @param len - length of the audio data
+     */
+    public void acceptWaveForm(byte[] data, int len) {
+        LibVosk.vosk_recognizer_accept_waveform(this.getPointer(), data, len);
+    }
+
+    public void acceptWaveForm(short[] data, int len) {
+        LibVosk.vosk_recognizer_accept_waveform_s(this.getPointer(), data, len);
+    }
+
+    public void acceptWaveForm(float[] data, int len) {
+        LibVosk.vosk_recognizer_accept_waveform_f(this.getPointer(), data, len);
+    }
+
+    public void flush() {
+        LibVosk.vosk_recognizer_flush(this.getPointer());
+    }
+
+    /**
+     * Returns speech recognition result
+     *
+     * @return the result in JSON format which contains decoded line, decoded
+     *          words, times in seconds and confidences. You can parse this result
+     *          with any json parser
+     *
+     * <pre>
+     *  {
+     *    "text" : "what zero zero zero one"
+     *  }
+     * </pre>
+     *
+     * If alternatives enabled it returns result with alternatives, see also #setMaxAlternatives().
+     *
+     * If word times enabled returns word time, see also #setWordTimes().
+     */
+    public String getResult() {
+        return LibVosk.vosk_recognizer_result_front(this.getPointer());
+    }
+
+    /**
+     * Removes the latest result from the result queue
+     */
+    public void popResult() {
+        LibVosk.vosk_recognizer_result_pop(this.getPointer());
+    }
+
+    /**
+     * Counts pending results
+     */
+    public int getNumPendingResults() {
+        return LibVosk.vosk_recognizer_get_num_pending_results(this.getPointer());
+    }
+
+    /**
+     * Counts pending results
+     */
+    public int getNumResults() {
+        return LibVosk.vosk_recognizer_get_num_results(this.getPointer());
+    }
+
+    /**
+     * Check if output queue is empty
+     */
+    public boolean getResultsEmpty() {
+        return (LibVosk.vosk_recognizer_results_empty(this.getPointer()) == 1);
+    }
+
+    /**
+     * Resets the recognizer.
+     * Resets current results so the recognition can continue from scratch.
+     */
+    public void reset() {
+        LibVosk.vosk_recognizer_reset(this.getPointer());
+    }
+
+    /**
+     * Releases recognizer object.
+     * Underlying model is also unreferenced and if needed, released.
+     */
+    @Override
+    public void close() {
+        LibVosk.vosk_recognizer_free(this.getPointer());
+    }
+}

bindings/java/lib/src/test/java/org/vosk/test/DecoderTest.java

@@ -0,0 +1,86 @@
+package org.vosk.test;
+
+import java.io.FileInputStream;
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+import org.junit.Test;
+import org.junit.Assert;
+
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.UnsupportedAudioFileException;
+
+import org.vosk.LogLevel;
+import org.vosk.Recognizer;
+import org.vosk.LibVosk;
+import org.vosk.Model;
+
+public class DecoderTest {
+
+    @Test
+    public void decoderTest() throws IOException, UnsupportedAudioFileException, InterruptedException {
+        LibVosk.setLogLevel(LogLevel.DEBUG);
+
+        try (Model model = new Model("../../python/example/vosk-model-small-ru");
+            InputStream ais = AudioSystem.getAudioInputStream(new BufferedInputStream(new FileInputStream("../../python/example/test-ru.wav")));
+            Recognizer recognizer = new Recognizer(model, 16000)) {
+
+            int nbytes;
+            byte[] b = new byte[4000];
+            while ((nbytes = ais.read(b)) >= 0) {
+                recognizer.acceptWaveForm(b, nbytes);
+                while (recognizer.getNumPendingResults() > 0) {
+                    Thread.sleep(50);
+                }
+                while (!recognizer.getResultsEmpty()) {
+                    System.out.println(recognizer.getResult());
+                    recognizer.popResult();
+                }
+            }
+            recognizer.flush();
+            while (recognizer.getNumPendingResults() > 0) {
+                Thread.sleep(50);
+            }
+            while (!recognizer.getResultsEmpty()) {
+                System.out.println(recognizer.getResult());
+                recognizer.popResult();
+            }
+        }
+        Assert.assertTrue(true);
+    }
+
+    @Test
+    public void decoderTestBig() throws IOException, UnsupportedAudioFileException, InterruptedException {
+        LibVosk.setLogLevel(LogLevel.DEBUG);
+
+        try (Model model = new Model("../../python/example/vosk-model-small-ru");
+            InputStream ais = AudioSystem.getAudioInputStream(new BufferedInputStream(new FileInputStream("../../python/example/test-ru.wav")));
+            Recognizer recognizer = new Recognizer(model, 16000)) {
+
+            int nbytes;
+            byte[] b = new byte[400000];
+            while ((nbytes = ais.read(b)) >= 0) {
+                recognizer.acceptWaveForm(b, nbytes);
+                while (recognizer.getNumPendingResults() > 0) {
+                    Thread.sleep(50);
+                }
+                while (!recognizer.getResultsEmpty()) {
+                    System.out.println(recognizer.getResult());
+                    recognizer.popResult();
+                }
+            }
+            recognizer.flush();
+            while (recognizer.getNumPendingResults() > 0) {
+                Thread.sleep(50);
+            }
+            while (!recognizer.getResultsEmpty()) {
+                System.out.println(recognizer.getResult());
+                recognizer.popResult();
+            }
+        }
+        Assert.assertTrue(true);
+    }
+}

bindings/python/example/test_simple.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+
+import wave
+import sys
+import time
+
+from vosk import Model, KaldiRecognizer, SetLogLevel
+
+# You can set log level to -1 to disable debug messages
+SetLogLevel(0)
+
+wf = wave.open(sys.argv[1], "rb")
+if wf.getnchannels() != 1 or wf.getsampwidth() != 2 or wf.getcomptype() != "NONE":
+    print("Audio file must be WAV format mono PCM.")
+    sys.exit(1)
+
+#model = Model("vosk-model-ru-0.53-private-0.1")
+model = Model("vosk-model-small-ru")
+
+rec = KaldiRecognizer(model, wf.getframerate())
+
+while True:
+    data = wf.readframes(4000)
+    if len(data) == 0:
+        break
+
+    # Feed into waveform
+    rec.AcceptWaveform(data)
+
+    # Wait for processing
+    while rec.GetNumPendingResults() > 0:
+        time.sleep(0.05)
+
+    # Retrieve the results
+    while not rec.ResultsEmpty():
+        print (rec.Result())
+        rec.Pop()
+
+rec.Flush()
+
+# Wait for processing
+while rec.GetNumPendingResults() > 0:
+    time.sleep(0.05)
+
+# Retrieve the results
+while not rec.ResultsEmpty():
+    print (rec.Result())
+    rec.Pop()

bindings/python/example/test_simple_list.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+
+import wave
+import json
+import sys
+import os
+import time
+from timeit import default_timer as timer
+
+from multiprocessing.dummy import Pool
+from vosk import Model, KaldiRecognizer
+
+#model = Model("vosk-model-ru-0.54-private-0.1")
+model = Model("vosk-model-ru-0.62")
+#model = Model("vosk-model-small-ru")
+
+def recognize(line):
+    fn = line.strip()
+    wf = wave.open(fn, "rb")
+    rec = KaldiRecognizer(model, wf.getframerate())
+
+    results = []
+    while True:
+        data = wf.readframes(4000)
+        if len(data) == 0:
+            break
+
+        rec.AcceptWaveform(data)
+        while rec.GetNumPendingResults() > 0:
+            time.sleep(0.05)
+
+        while not rec.ResultsEmpty():
+            jres = json.loads(rec.Result())
+            if 'text' in jres:
+                print (jres)
+                results.append(jres['text'])
+            rec.Pop()
+
+    rec.Flush()
+
+    while rec.GetNumPendingResults() > 0:
+        time.sleep(0.05)
+
+    while not rec.ResultsEmpty():
+        jres = json.loads(rec.Result())
+        if 'text' in jres:
+            print (jres)
+            results.append(jres['text'])
+        rec.Pop()
+
+    owf = open(fn.replace(".wav", ".hyp"), "w")
+    owf.write("\n".join(results))
+
+def main():
+    start = timer()
+    p = Pool(20)
+    p.map(recognize, open(sys.argv[1]).readlines())
+    allsize = sum([os.path.getsize(f.strip()) for f in open(sys.argv[1]).readlines()]) / 8000.0 / 2
+    dur = timer() - start
+    print (f"Recognized {allsize:.2f} seconds in {dur} seconds speed {dur / allsize:.3f} x RT")
+
+main()

bindings/python/example/test_simple_whole.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+import wave
+import sys
+import time
+
+from vosk import Model, KaldiRecognizer, SetLogLevel
+
+# You can set log level to -1 to disable debug messages
+SetLogLevel(0)
+
+wf = wave.open(sys.argv[1], "rb")
+if wf.getnchannels() != 1 or wf.getsampwidth() != 2 or wf.getcomptype() != "NONE":
+    print("Audio file must be WAV format mono PCM.")
+    sys.exit(1)
+
+#model = Model("vosk-model-ru-0.53-private-0.1")
+model = Model("vosk-model-small-ru")
+
+rec = KaldiRecognizer(model, wf.getframerate())
+
+data = wf.readframes(min(wf.getnframes(), 320000))
+rec.AcceptWaveform(data)
+rec.Flush()
+
+while rec.GetNumPendingResults() > 0:
+    time.sleep(0.05)
+while not rec.ResultsEmpty():
+    print (rec.Result())
+    rec.Pop()

bindings/python/setup.py

@@ -6,7 +6,7 @@ import platform
 
 # Figure out environment for cross-compile
 vosk_source = os.getenv("VOSK_SOURCE", os.path.abspath(os.path.join(os.path.dirname(__file__),
-    "..")))
+    "../..")))
 system = os.environ.get('VOSK_SYSTEM', platform.system())
 architecture = os.environ.get('VOSK_ARCHITECTURE', platform.architecture()[0])
 machine = os.environ.get('VOSK_MACHINE', platform.machine())
@@ -45,7 +45,7 @@ with open("README.md", "rb") as fh:
 
 setuptools.setup(
     name="vosk",
-    version="0.3.45",
+    version="0.4.0",
     author="Alpha Cephei Inc",
     author_email="contact@alphacephei.com",
     description="Offline open source speech recognition API based on Kaldi and Vosk",
@@ -53,7 +53,7 @@ setuptools.setup(
     long_description_content_type="text/markdown",
     url="https://github.com/alphacep/vosk-api",
     packages=setuptools.find_packages(),
-    package_data = {'vosk': ['*.so', '*.dll', '*.dyld']},
+    package_data = {'vosk': ['*.so*', '*.dll', '*.dyld']},
     entry_points = {
         'console_scripts': ['vosk-transcriber=vosk.transcriber.cli:main'],
     },

bindings/python/vosk/__init__.py

@@ -3,6 +3,7 @@ import sys
 import srt
 import datetime
 import json
+import enum
 
 import requests
 from urllib.request import urlretrieve
@@ -57,7 +58,8 @@ class Model:
             raise Exception("Failed to create a model")
 
     def __del__(self):
-        _c.vosk_model_free(self._handle)
+        if _c is not None:
+            _c.vosk_model_free(self._handle)
 
     def vosk_model_find_word(self, word):
         return _c.vosk_model_find_word(self._handle, word.encode("utf-8"))
@@ -140,6 +142,12 @@ class SpkModel:
     def __del__(self):
         _c.vosk_spk_model_free(self._handle)
 
+class EndpointerMode(enum.Enum):
+    DEFAULT = 0
+    SHORT = 1
+    LONG = 2
+    VERY_LONG = 3
+
 class KaldiRecognizer:
 
     def __init__(self, *args):
@@ -172,6 +180,12 @@ class KaldiRecognizer:
     def SetNLSML(self, enable_nlsml):
         _c.vosk_recognizer_set_nlsml(self._handle, 1 if enable_nlsml else 0)
 
+    def SetEndpointerMode(self, mode):
+        _c.vosk_recognizer_set_endpointer_mode(self._handle, mode.value)
+
+    def SetEndpointerDelays(self, t_start_max, t_end, t_max):
+        _c.vosk_recognizer_set_endpointer_delays(self._handle, t_start_max, t_end, t_max)
+
     def SetSpkModel(self, spk_model):
         _c.vosk_recognizer_set_spk_model(self._handle, spk_model._handle)
 
@@ -179,19 +193,25 @@ class KaldiRecognizer:
         _c.vosk_recognizer_set_grm(self._handle, grammar.encode("utf-8"))
 
     def AcceptWaveform(self, data):
-        res = _c.vosk_recognizer_accept_waveform(self._handle, data, len(data))
-        if res < 0:
-            raise Exception("Failed to process waveform")
-        return res
+        _c.vosk_recognizer_accept_waveform(self._handle, data, len(data))
+
+    def Flush(self):
+        return _c.vosk_recognizer_flush(self._handle)
 
     def Result(self):
-        return _ffi.string(_c.vosk_recognizer_result(self._handle)).decode("utf-8")
+        return _ffi.string(_c.vosk_recognizer_result_front(self._handle)).decode("utf-8")
 
-    def PartialResult(self):
-        return _ffi.string(_c.vosk_recognizer_partial_result(self._handle)).decode("utf-8")
+    def Pop(self):
+        return _c.vosk_recognizer_result_pop(self._handle)
 
-    def FinalResult(self):
-        return _ffi.string(_c.vosk_recognizer_final_result(self._handle)).decode("utf-8")
+    def GetNumPendingResults(self):
+        return _c.vosk_recognizer_get_num_pending_results(self._handle)
+
+    def GetNumResults(self):
+        return _c.vosk_recognizer_get_num_results(self._handle)
+
+    def ResultsEmpty(self):
+        return _c.vosk_recognizer_results_empty(self._handle)
 
     def Reset(self):
         return _c.vosk_recognizer_reset(self._handle)
@@ -225,51 +245,3 @@ class KaldiRecognizer:
 
 def SetLogLevel(level):
     return _c.vosk_set_log_level(level)
-
-
-def GpuInit():
-    _c.vosk_gpu_init()
-
-
-def GpuThreadInit():
-    _c.vosk_gpu_thread_init()
-
-class BatchModel:
-
-    def __init__(self, model_path, *args):
-        self._handle = _c.vosk_batch_model_new(model_path.encode('utf-8'))
-
-        if self._handle == _ffi.NULL:
-            raise Exception("Failed to create a model")
-
-    def __del__(self):
-        _c.vosk_batch_model_free(self._handle)
-
-    def Wait(self):
-        _c.vosk_batch_model_wait(self._handle)
-
-class BatchRecognizer:
-
-    def __init__(self, *args):
-        self._handle = _c.vosk_batch_recognizer_new(args[0]._handle, args[1])
-
-        if self._handle == _ffi.NULL:
-            raise Exception("Failed to create a recognizer")
-
-    def __del__(self):
-        _c.vosk_batch_recognizer_free(self._handle)
-
-    def AcceptWaveform(self, data):
-        res = _c.vosk_batch_recognizer_accept_waveform(self._handle, data, len(data))
-
-    def Result(self):
-        ptr = _c.vosk_batch_recognizer_front_result(self._handle)
-        res = _ffi.string(ptr).decode("utf-8")
-        _c.vosk_batch_recognizer_pop(self._handle)
-        return res
-
-    def FinishStream(self):
-        _c.vosk_batch_recognizer_finish_stream(self._handle)
-
-    def GetPendingChunks(self):
-        return _c.vosk_batch_recognizer_get_pending_chunks(self._handle)

bindings/python/vosk/transcriber/cli.py

@@ -15,8 +15,8 @@ parser.add_argument(
         "--model", "-m", type=str,
         help="model path")
 parser.add_argument(
-        "--server", "-s", const="ws://localhost:2700", action="store_const",
-        help="use server for recognition")
+        "--server", "-s", type=str,
+        help="use server for recognition. For example ws://localhost:2700")
 parser.add_argument(
         "--list-models", default=False, action="store_true",
         help="list available models")

bindings/python/vosk/transcriber/transcriber.py

@@ -99,7 +99,7 @@ class Transcriber:
             monologues = {"schemaVersion":"2.0", "monologues":[], "text":[]}
             for part in result:
                 if part["text"] != "":
-                    monologue["text"] += part["text"]
+                    monologues["text"] += [part["text"]]
             for _, res in enumerate(result):
                 if not "result" in res:
                     continue
@@ -133,6 +133,12 @@ class Transcriber:
             start_time = timer()
             proc = await self.resample_ffmpeg_async(input_file)
             result, tot_samples = await self.recognize_stream_server(proc)
+            await proc.wait()
+
+            # Bad input, continue
+            if tot_samples == 0:
+                 self.queue.task_done()
+                 continue
 
             processed_result = self.format_result(result)
             if output_file != "":
@@ -142,8 +148,6 @@ class Transcriber:
             else:
                 print(processed_result)
 
-            await proc.wait()
-
             elapsed = timer() - start_time
             logging.info("Execution time: {:.3f} sec; "\
                     "xRT {:.3f}".format(elapsed, float(elapsed) * (2 * SAMPLE_RATE) / tot_samples))
@@ -165,8 +169,10 @@ class Transcriber:
         rec = KaldiRecognizer(self.model, SAMPLE_RATE)
         rec.SetWords(True)
         result, tot_samples = self.recognize_stream(rec, stream)
-        processed_result = self.format_result(result)
+        if tot_samples == 0:
+            return
 
+        processed_result = self.format_result(result)
         if inputdata[1] != "":
             logging.info("File {} processing complete".format(inputdata[1]))
             with open(inputdata[1], "w", encoding="utf-8") as fh:

bindings/python/vosk_builder.py

@@ -3,7 +3,7 @@
 import os
 from cffi import FFI
 
-vosk_root=os.environ.get("VOSK_SOURCE", "..")
+vosk_root=os.environ.get("VOSK_SOURCE", "../..")
 cpp_command = "cpp " + vosk_root + "/src/vosk_api.h"
 
 ffibuilder = FFI()

c/Makefile

@@ -1,16 +0,0 @@
-CFLAGS=-I../src
-LDFLAGS=-L../src -lvosk -ldl -lpthread -Wl,-rpath,../src
-
-all: test_vosk test_vosk_speaker
-
-test_vosk: test_vosk.o
-	gcc $^ -o $@ $(LDFLAGS)
-
-test_vosk_speaker: test_vosk_speaker.o
-	gcc $^ -o $@ $(LDFLAGS)
-
-%.o: %.c
-	gcc $(CFLAGS) -c -o $@ $<
-
-clean:
-	rm -f *.o *.a test_vosk test_vosk_speaker

c/test_vosk.c

@@ -1,29 +0,0 @@
-#include <vosk_api.h>
-#include <stdio.h>
-
-int main() {
-    FILE *wavin;
-    char buf[3200];
-    int nread, final;
-
-    VoskModel *model = vosk_model_new("model");
-    VoskRecognizer *recognizer = vosk_recognizer_new(model, 16000.0);
-
-    wavin = fopen("test.wav", "rb");
-    fseek(wavin, 44, SEEK_SET);
-    while (!feof(wavin)) {
-         nread = fread(buf, 1, sizeof(buf), wavin);
-         final = vosk_recognizer_accept_waveform(recognizer, buf, nread);
-         if (final) {
-             printf("%s\n", vosk_recognizer_result(recognizer));
-         } else {
-             printf("%s\n", vosk_recognizer_partial_result(recognizer));
-         }
-    }
-    printf("%s\n", vosk_recognizer_final_result(recognizer));
-
-    vosk_recognizer_free(recognizer);
-    vosk_model_free(model);
-    fclose(wavin);
-    return 0;
-}

c/test_vosk_speaker.c

@@ -1,30 +0,0 @@
-#include <vosk_api.h>
-#include <stdio.h>
-
-int main() {
-    FILE *wavin;
-    char buf[3200];
-    int nread, final;
-
-    VoskModel *model = vosk_model_new("model");
-    VoskSpkModel *spk_model = vosk_spk_model_new("spk-model");
-    VoskRecognizer *recognizer = vosk_recognizer_new_spk(model, 16000.0, spk_model);
-
-    wavin = fopen("test.wav", "rb");
-    fseek(wavin, 44, SEEK_SET);
-    while (!feof(wavin)) {
-         nread = fread(buf, 1, sizeof(buf), wavin);
-         final = vosk_recognizer_accept_waveform(recognizer, buf, nread);
-         if (final) {
-             printf("%s\n", vosk_recognizer_result(recognizer));
-         } else {
-             printf("%s\n", vosk_recognizer_partial_result(recognizer));
-         }
-    }
-    printf("%s\n", vosk_recognizer_final_result(recognizer));
-
-    vosk_recognizer_free(recognizer);
-    vosk_spk_model_free(spk_model);
-    vosk_model_free(model);
-    return 0;
-}

csharp/README.md

@@ -1,12 +0,0 @@
-This is a nuget-based wrapper for libvosk library
-
-See demo folder for example how to use the library. You can simply run
-"dotnet run" to run the demo. Make sure you unpacked the model and the
-test file.
-
-See the nuget folder for the sources of the wrapper. Run build.sh to
-build nuget package.
-
-Note we only support win64 and linux64 for now. No support for win32
-since it is a little bit painful to load the libraries depending on
-architecture. In theory we can add OSX some time or even Android.

csharp/demo/VoskDemo.cs

@@ -1,80 +0,0 @@
-using System;
-using System.IO;
-using Vosk;
-
-public class VoskDemo
-{
-   public static void DemoBytes(Model model)
-   {
-        // Demo byte buffer
-        VoskRecognizer rec = new VoskRecognizer(model, 16000.0f);
-        rec.SetMaxAlternatives(0);
-        rec.SetWords(true);
-        using(Stream source = File.OpenRead("test.wav")) {
-            byte[] buffer = new byte[4096];
-            int bytesRead;
-            while((bytesRead = source.Read(buffer, 0, buffer.Length)) > 0) {
-                if (rec.AcceptWaveform(buffer, bytesRead)) {
-                    Console.WriteLine(rec.Result());
-                } else {
-                    Console.WriteLine(rec.PartialResult());
-                }
-            }
-        }
-        Console.WriteLine(rec.FinalResult());
-   }
-
-   public static void DemoFloats(Model model)
-   {
-        // Demo float array
-        VoskRecognizer rec = new VoskRecognizer(model, 16000.0f);
-        using(Stream source = File.OpenRead("test.wav")) {
-            byte[] buffer = new byte[4096];
-            int bytesRead;
-            while((bytesRead = source.Read(buffer, 0, buffer.Length)) > 0) {
-                float[] fbuffer = new float[bytesRead / 2];
-                for (int i = 0, n = 0; i < fbuffer.Length; i++, n+=2) {
-                    fbuffer[i] = BitConverter.ToInt16(buffer, n);
-                }
-                if (rec.AcceptWaveform(fbuffer, fbuffer.Length)) {
-                    Console.WriteLine(rec.Result());
-                } else {
-                    Console.WriteLine(rec.PartialResult());
-                }
-            }
-        }
-        Console.WriteLine(rec.FinalResult());
-   }
-
-   public static void DemoSpeaker(Model model)
-   {
-        // Output speakers
-        SpkModel spkModel = new SpkModel("model-spk");
-        VoskRecognizer rec = new VoskRecognizer(model, 16000.0f);
-        rec.SetSpkModel(spkModel);
-
-        using(Stream source = File.OpenRead("test.wav")) {
-            byte[] buffer = new byte[4096];
-            int bytesRead;
-            while((bytesRead = source.Read(buffer, 0, buffer.Length)) > 0) {
-                if (rec.AcceptWaveform(buffer, bytesRead)) {
-                    Console.WriteLine(rec.Result());
-                } else {
-                    Console.WriteLine(rec.PartialResult());
-                }
-            }
-        }
-        Console.WriteLine(rec.FinalResult());
-   }
-
-   public static void Main()
-   {
-        // You can set to -1 to disable logging messages
-        Vosk.Vosk.SetLogLevel(0);
-
-        Model model = new Model("model");
-        DemoBytes(model);
-        DemoFloats(model);
-        DemoSpeaker(model);
-   }
-}

csharp/demo/VoskDemo.csproj

@@ -1,17 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
-    <RootNamespace>VoskDemo</RootNamespace>
-  </PropertyGroup>
-
-  <PropertyGroup>
-    <RestoreSources>$(RestoreSources);../nuget</RestoreSources>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Vosk" Version="0.3.45" />
-  </ItemGroup>
-
-</Project>

csharp/nuget/Vosk.nuspec

@@ -1,32 +0,0 @@
-<?xml version="1.0"?>
-<package>
-  <metadata>
-    <id>Vosk</id>
-    <version>0.3.45</version>
-    <authors>Alpha Cephei Inc</authors>
-    <owners>Alpha Cephei Inc</owners>
-    <license type="expression">Apache-2.0</license>
-    <projectUrl>https://alphacephei.com/vosk/</projectUrl>
-    <requireLicenseAcceptance>false</requireLicenseAcceptance>
-    <title>Vosk Speech Recognition Toolkit</title>
-    <description>Vosk is an offline open source speech recognition toolkit. It enables speech recognition models for 20+ languages and dialects - English, Indian English, German, French, Spanish, Portuguese, Chinese, Russian, Turkish, Vietnamese, Italian, Dutch, Catalan, Arabic, Greek, Farsi, Filipino, Ukrainian, Kazakh, Swedish, Japanese, Esperanto, Hindi, Czech. More to come.
-
-Vosk models are small (50 Mb) but provide continuous large vocabulary transcription, zero-latency response with streaming API, reconfigurable vocabulary and speaker identification.
-
-Speech recognition bindings implemented for various programming languages like Python, Java, Node.JS, C#, C++ and others.
-
-Vosk supplies speech recognition for chatbots, smart home appliances, virtual assistants. It can also create subtitles for movies, transcription for lectures and interviews.
-
-Vosk scales from small devices like Raspberry Pi or Android smartphone to big clusters.</description>
-    <releaseNotes>See for details https://github.com/alphacep/vosk-api/releases</releaseNotes>
-    <repository type="git" url="https://github.com/alphacep/vosk-api.git" branch="master"/>
-    <copyright>Copyright 2020-2050 Alpha Cephei Inc</copyright>
-    <tags>speech recognition voice stt asr speech-to-text ai offline privacy</tags>
-    <dependencies>
-      <group targetFramework=".NETStandard2.0"/>
-    </dependencies>
-  </metadata>
-  <files>
-    <file src="**" exclude="src/*.cs;build.sh;**/.keep-me;*.nupkg" />
-  </files>
-</package>

csharp/nuget/build.sh

@@ -1,2 +0,0 @@
-mcs -out:lib/netstandard2.0/Vosk.dll -target:library src/*.cs
-nuget pack

csharp/nuget/build/Vosk.targets

@@ -1,11 +0,0 @@
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup>
-    <NativeLibs Include="$(MSBuildThisFileDirectory)\lib\linux-x64\*.so" Condition="'$([MSBuild]::IsOsPlatform(Linux))'" />
-    <NativeLibs Include="$(MSBuildThisFileDirectory)\lib\win-x64\*.dll" Condition="'$([MSBuild]::IsOsPlatform(Windows))'" />
-    <NativeLibs Include="$(MSBuildThisFileDirectory)\lib\osx-universal\*.dylib" Condition="'$([MSBuild]::IsOsPlatform(OSX))'" />
-    <None Include="@(NativeLibs)">
-      <Link>%(FileName)%(Extension)</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
-  </ItemGroup>
-</Project>

csharp/nuget/src/Model.cs

@@ -1,41 +0,0 @@
-namespace Vosk {
-
-public class Model : global::System.IDisposable {
-  private global::System.Runtime.InteropServices.HandleRef handle;
-
-  internal Model(global::System.IntPtr cPtr) {
-    handle = new global::System.Runtime.InteropServices.HandleRef(this, cPtr);
-  }
-
-  internal static global::System.Runtime.InteropServices.HandleRef getCPtr(Model obj) {
-    return (obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.handle;
-  }
-
-  ~Model() {
-    Dispose(false);
-  }
-
-  public void Dispose() {
-    Dispose(true);
-    global::System.GC.SuppressFinalize(this);
-  }
-
-  protected virtual void Dispose(bool disposing) {
-    lock(this) {
-      if (handle.Handle != global::System.IntPtr.Zero) {
-        VoskPINVOKE.delete_Model(handle);
-        handle = new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero);
-      }
-    }
-  }
-
-  public Model(string model_path) : this(VoskPINVOKE.new_Model(model_path)) {
-  }
-
-  public int FindWord(string word) {
-    return VoskPINVOKE.Model_vosk_model_find_word(handle, word);
-  }
-
-}
-
-}

csharp/nuget/src/SpkModel.cs

@@ -1,37 +0,0 @@
-namespace Vosk {
-
-public class SpkModel : global::System.IDisposable {
-  private global::System.Runtime.InteropServices.HandleRef handle;
-
-  internal SpkModel(global::System.IntPtr cPtr) {
-    handle = new global::System.Runtime.InteropServices.HandleRef(this, cPtr);
-  }
-
-  internal static global::System.Runtime.InteropServices.HandleRef getCPtr(SpkModel obj) {
-    return (obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.handle;
-  }
-
-  ~SpkModel() {
-    Dispose(false);
-  }
-
-  public void Dispose() {
-    Dispose(true);
-    global::System.GC.SuppressFinalize(this);
-  }
-
-  protected virtual void Dispose(bool disposing) {
-    lock(this) {
-      if (handle.Handle != global::System.IntPtr.Zero) {
-        VoskPINVOKE.delete_SpkModel(handle);
-        handle = new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero);
-      }
-    }
-  }
-
-  public SpkModel(string model_path) : this(VoskPINVOKE.new_SpkModel(model_path)) {
-  }
-
-}
-
-}

csharp/nuget/src/Vosk.cs

@@ -1,17 +0,0 @@
-namespace Vosk {
-
-public class Vosk {
-  public static void SetLogLevel(int level) {
-    VoskPINVOKE.SetLogLevel(level);
-  }
-
-  public static void GpuInit() {
-    VoskPINVOKE.GpuInit();
-  }
-
-  public static void GpuThreadInit() {
-    VoskPINVOKE.GpuThreadInit();
-  }
-}
-
-}

csharp/nuget/src/VoskPINVOKE.cs

@@ -1,78 +0,0 @@
-namespace Vosk {
-
-class VoskPINVOKE {
-
-  static VoskPINVOKE() {
-  }
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_model_new")]
-  public static extern global::System.IntPtr new_Model(string jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_model_free")]
-  public static extern void delete_Model(global::System.Runtime.InteropServices.HandleRef jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_model_find_word")]
-  public static extern int Model_vosk_model_find_word(global::System.Runtime.InteropServices.HandleRef jarg1, string jarg2);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_spk_model_new")]
-  public static extern global::System.IntPtr new_SpkModel(string jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_spk_model_free")]
-  public static extern void delete_SpkModel(global::System.Runtime.InteropServices.HandleRef jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_new")]
-  public static extern global::System.IntPtr new_VoskRecognizer(global::System.Runtime.InteropServices.HandleRef jarg1, float jarg2);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_new_spk")]
-  public static extern global::System.IntPtr new_VoskRecognizerSpk(global::System.Runtime.InteropServices.HandleRef jarg1, float jarg2, global::System.Runtime.InteropServices.HandleRef jarg3);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_new_grm")]
-  public static extern global::System.IntPtr new_VoskRecognizerGrm(global::System.Runtime.InteropServices.HandleRef jarg1, float jarg2, string jarg3);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_free")]
-  public static extern void delete_VoskRecognizer(global::System.Runtime.InteropServices.HandleRef jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_set_max_alternatives")]
-  public static extern void VoskRecognizer_SetMaxAlternatives(global::System.Runtime.InteropServices.HandleRef jarg1, int jarg2);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_set_words")]
-  public static extern void VoskRecognizer_SetWords(global::System.Runtime.InteropServices.HandleRef jarg1, int jarg2);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_set_partial_words")]
-  public static extern void VoskRecognizer_SetPartialWords(global::System.Runtime.InteropServices.HandleRef jarg1, int jarg2);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_set_spk_model")]
-  public static extern void VoskRecognizer_SetSpkModel(global::System.Runtime.InteropServices.HandleRef jarg1, global::System.Runtime.InteropServices.HandleRef jarg2);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_accept_waveform")]
-  public static extern bool VoskRecognizer_AcceptWaveform(global::System.Runtime.InteropServices.HandleRef jarg1, [global::System.Runtime.InteropServices.In, global::System.Runtime.InteropServices.MarshalAs(global::System.Runtime.InteropServices.UnmanagedType.LPArray)]byte[] jarg2, int jarg3);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_accept_waveform_s")]
-  public static extern bool VoskRecognizer_AcceptWaveformShort(global::System.Runtime.InteropServices.HandleRef jarg1, [global::System.Runtime.InteropServices.In, global::System.Runtime.InteropServices.MarshalAs(global::System.Runtime.InteropServices.UnmanagedType.LPArray)]short[] jarg2, int jarg3);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_accept_waveform_f")]
-  public static extern bool VoskRecognizer_AcceptWaveformFloat(global::System.Runtime.InteropServices.HandleRef jarg1, [global::System.Runtime.InteropServices.In, global::System.Runtime.InteropServices.MarshalAs(global::System.Runtime.InteropServices.UnmanagedType.LPArray)]float[] jarg2, int jarg3);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_result")]
-  public static extern global::System.IntPtr VoskRecognizer_Result(global::System.Runtime.InteropServices.HandleRef jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_partial_result")]
-  public static extern global::System.IntPtr VoskRecognizer_PartialResult(global::System.Runtime.InteropServices.HandleRef jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_final_result")]
-  public static extern global::System.IntPtr VoskRecognizer_FinalResult(global::System.Runtime.InteropServices.HandleRef jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_recognizer_reset")]
-  public static extern void VoskRecognizer_Reset(global::System.Runtime.InteropServices.HandleRef jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_set_log_level")]
-  public static extern void SetLogLevel(int jarg1);
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_gpu_init")]
-  public static extern void GpuInit();
-
-  [global::System.Runtime.InteropServices.DllImport("libvosk", EntryPoint="vosk_gpu_thread_init")]
-  public static extern void GpuThreadInit();
-}
-
-}

csharp/nuget/src/VoskRecognizer.cs

@@ -1,96 +0,0 @@
-namespace Vosk {
-
-public class VoskRecognizer : System.IDisposable {
-  private System.Runtime.InteropServices.HandleRef handle;
-
-  internal VoskRecognizer(System.IntPtr cPtr) {
-    handle = new System.Runtime.InteropServices.HandleRef(this, cPtr);
-  }
-
-  internal static System.Runtime.InteropServices.HandleRef getCPtr(VoskRecognizer obj) {
-    return (obj == null) ? new System.Runtime.InteropServices.HandleRef(null, System.IntPtr.Zero) : obj.handle;
-  }
-
-  ~VoskRecognizer() {
-    Dispose(false);
-  }
-
-  public void Dispose() {
-    Dispose(true);
-    System.GC.SuppressFinalize(this);
-  }
-
-  protected virtual void Dispose(bool disposing) {
-    lock(this) {
-      if (handle.Handle != System.IntPtr.Zero) {
-        VoskPINVOKE.delete_VoskRecognizer(handle);
-        handle = new System.Runtime.InteropServices.HandleRef(null, System.IntPtr.Zero);
-      }
-    }
-  }
-
-  public VoskRecognizer(Model model, float sample_rate) : this(VoskPINVOKE.new_VoskRecognizer(Model.getCPtr(model), sample_rate)) {
-  }
-
-  public VoskRecognizer(Model model, float sample_rate, SpkModel spk_model) : this(VoskPINVOKE.new_VoskRecognizerSpk(Model.getCPtr(model), sample_rate, SpkModel.getCPtr(spk_model))) {
-  }
-
-  public VoskRecognizer(Model model, float sample_rate, string grammar) : this(VoskPINVOKE.new_VoskRecognizerGrm(Model.getCPtr(model), sample_rate, grammar)) {
-  }
-
-  public void SetMaxAlternatives(int max_alternatives) {
-    VoskPINVOKE.VoskRecognizer_SetMaxAlternatives(handle, max_alternatives);
-  }
-
-  public void SetWords(bool words) {
-    VoskPINVOKE.VoskRecognizer_SetWords(handle, words ? 1 : 0);
-  }
-
-  public void SetPartialWords(bool partial_words) {
-    VoskPINVOKE.VoskRecognizer_SetPartialWords(handle, partial_words ? 1 : 0);
-  }
-
-  public void SetSpkModel(SpkModel spk_model) {
-    VoskPINVOKE.VoskRecognizer_SetSpkModel(handle, SpkModel.getCPtr(spk_model));
-  }
-
-  public bool AcceptWaveform(byte[] data, int len) {
-    return VoskPINVOKE.VoskRecognizer_AcceptWaveform(handle, data, len);
-  }
-
-  public bool AcceptWaveform(short[] sdata, int len) {
-    return VoskPINVOKE.VoskRecognizer_AcceptWaveformShort(handle, sdata, len);
-  }
-
-  public bool AcceptWaveform(float[] fdata, int len) {
-    return VoskPINVOKE.VoskRecognizer_AcceptWaveformFloat(handle, fdata, len);
-  }
-
-  private static string PtrToStringUTF8(System.IntPtr ptr) {
-    int len = 0;
-    while (System.Runtime.InteropServices.Marshal.ReadByte(ptr, len) != 0)
-        len++;
-    byte[] array = new byte[len];
-    System.Runtime.InteropServices.Marshal.Copy(ptr, array, 0, len);
-    return System.Text.Encoding.UTF8.GetString(array);
-  }
-
-  public string Result() {
-    return PtrToStringUTF8(VoskPINVOKE.VoskRecognizer_Result(handle));
-  }
-
-  public string PartialResult() {
-    return PtrToStringUTF8(VoskPINVOKE.VoskRecognizer_PartialResult(handle));
-  }
-
-  public string FinalResult() {
-    return PtrToStringUTF8(VoskPINVOKE.VoskRecognizer_FinalResult(handle));
-  }
-
-  public void Reset() {
-    VoskPINVOKE.VoskRecognizer_Reset(handle);
-  }
-
-}
-
-}

go/COPYING

@@ -1,176 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
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-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
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-
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-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
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-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
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-
-   6. Trademarks. this License does not grant permission to use the trade
-      names, trademarks, service marks, or product names of the Licensor,
-      except as required for reasonable and customary use in describing the
-      origin of the Work and reproducing the content of the NOTICE file.
-
-   7. Disclaimer of Warranty. Unless required by applicable law or
-      agreed to in writing, Licensor provides the Work (and each
-      Contributor provides its Contributions) on an "AS IS" BASIS,
-      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
-      implied, including, without limitation, any warranties or conditions
-      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
-      PARTICULAR PURPOSE. You are solely responsible for determining the
-      appropriateness of using or redistributing the Work and assume any
-      risks associated with Your exercise of permissions under this License.
-
-   8. Limitation of Liability. In no event and under no legal theory,
-      whether in tort (including negligence), contract, or otherwise,
-      unless required by applicable law (such as deliberate and grossly
-      negligent acts) or agreed to in writing, shall any Contributor be
-      liable to You for damages, including any direct, indirect, special,
-      incidental, or consequential damages of any character arising as a
-      result of this License or out of the use or inability to use the
-      Work (including but not limited to damages for loss of goodwill,
-      work stoppage, computer failure or malfunction, or any and all
-      other commercial damages or losses), even if such Contributor
-      has been advised of the possibility of such damages.
-
-   9. Accepting Warranty or Additional Liability. While redistributing
-      the Work or Derivative Works thereof, You may choose to offer,
-      and charge a fee for, acceptance of support, warranty, indemnity,
-      or other liability obligations and/or rights consistent with this
-      License. However, in accepting such obligations, You may act only
-      on Your own behalf and on Your sole responsibility, not on behalf
-      of any other Contributor, and only if You agree to indemnify,
-      defend, and hold each Contributor harmless for any liability
-      incurred by, or claims asserted against, such Contributor by reason
-      of your accepting any such warranty or additional liability.
-
-   END OF TERMS AND CONDITIONS

go/README.md

@@ -1 +0,0 @@
-See example subfolder for instructions how to use the module

go/doc.go

@@ -1,7 +0,0 @@
-// Go bindings for Vosk speech recognition toolkit. Vosk is an offline
-// open source speech to text API for Android, iOS, Raspberry Pi and
-// servers. It enables speech recognition models for 18 languages and
-// dialects - English, Indian English, German, French, Spanish, Portuguese,
-// Chinese, Russian, Turkish, Vietnamese, Italian, Dutch, Catalan, Arabic,
-// Greek, Farsi, Filipino, Ukrainian.
-package vosk

go/example/README.md

@@ -1,31 +0,0 @@
-To try this package do the following steps:
-
-On Linux (we download library and set LD_LIBRARY_PATH)
-
-```
-git clone https://github.com/alphacep/vosk-api
-cd vosk-api/go/example
-wget https://github.com/alphacep/vosk-api/releases/download/v0.3.45/vosk-linux-x86_64-0.3.45.zip
-unzip vosk-linux-x86_64-0.3.45.zip
-wget https://alphacephei.com/vosk/models/vosk-model-small-en-us-0.15.zip
-unzip vosk-model-small-en-us-0.15.zip
-mv vosk-model-small-en-us-0.15 model
-cp ../../python/example/test.wav .
-VOSK_PATH=`pwd`/vosk-linux-x86_64-0.3.45 LD_LIBRARY_PATH=$VOSK_PATH CGO_CPPFLAGS="-I $VOSK_PATH" CGO_LDFLAGS="-L $VOSK_PATH" go run . -f test.wav
-```
-
-for Windows (we place DLLs in current folder where linker finds them):
-
-```
-git clone https://github.com/alphacep/vosk-api
-cd vosk-api/go/example
-wget https://github.com/alphacep/vosk-api/releases/download/v0.3.45/vosk-linux-x86_64-0.3.45.zip
-unzip vosk-linux-x86_64-0.3.45.zip
-cp vosk-linux-x86_64-0.3.45/*.dll .
-cp vosk-linux-x86_64-0.3.45/*.h .
-wget https://alphacephei.com/vosk/models/vosk-model-small-en-us-0.15.zip
-unzip vosk-model-small-en-us-0.15.zip
-mv vosk-model-small-en-us-0.15 model
-cp ../../python/example/test.wav .
-VOSK_PATH=`pwd` LD_LIBRARY_PATH=$VOSK_PATH CGO_CPPFLAGS="-I $VOSK_PATH" CGO_LDFLAGS="-L $VOSK_PATH -lvosk -lpthread -dl" go run . -f test.wav
-```

go/example/doc.go

@@ -1,2 +0,0 @@
-// Example package for Vosk Go bindings.
-package main

go/example/test_simple.go

@@ -1,63 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"flag"
-	"fmt"
-	"io"
-	"log"
-	"os"
-	"encoding/json"
-
-	vosk "github.com/alphacep/vosk-api/go"
-)
-
-func main() {
-	var filename string
-	flag.StringVar(&filename, "f", "", "file to transcribe")
-	flag.Parse()
-
-	model, err := vosk.NewModel("model")
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	// we can check if word is in the vocabulary
-	// fmt.Println(model.FindWord("air"))
-
-	sampleRate := 16000.0
-	rec, err := vosk.NewRecognizer(model, sampleRate)
-	if err != nil {
-		log.Fatal(err)
-	}
-	rec.SetWords(1)
-
-	file, err := os.Open(filename)
-	if err != nil {
-		panic(err)
-	}
-	defer file.Close()
-
-	reader := bufio.NewReader(file)
-	buf := make([]byte, 4096)
-
-	for {
-		_, err := reader.Read(buf)
-		if err != nil {
-			if err != io.EOF {
-				log.Fatal(err)
-			}
-
-			break
-		}
-
-		if rec.AcceptWaveform(buf) != 0 {
-			fmt.Println(rec.Result())
-		}
-	}
-
-	// Unmarshal example for final result
-	var jres map[string]interface{}
-	json.Unmarshal([]byte(rec.FinalResult()), &jres)
-	fmt.Println(jres["text"])
-}

go/go.mod

@@ -1,7 +0,0 @@
-module github.com/alphacep/vosk-api/go
-
-go 1.16
-
-replace (
-    github.com/alphacep/vosk-api/go => ./
-)

go/vosk.go

@@ -1,162 +0,0 @@
-package vosk
-
-// #cgo CPPFLAGS: -I ${SRCDIR}/../src
-// #cgo LDFLAGS: -L ${SRCDIR}/../src -lvosk -ldl -lpthread
-// #include <stdlib.h>
-// #include <vosk_api.h>
-import "C"
-import "unsafe"
-
-// VoskModel contains a reference to the C VoskModel
-type VoskModel struct {
-	model *C.struct_VoskModel
-}
-
-// NewModel creates a new VoskModel instance
-func NewModel(modelPath string) (*VoskModel, error) {
-	cmodelPath := C.CString(modelPath)
-	defer C.free(unsafe.Pointer(cmodelPath))
-	internal := C.vosk_model_new(cmodelPath)
-	model := &VoskModel{model: internal}
-	return model, nil
-}
-
-func (m *VoskModel) Free() {
-	C.vosk_model_free(m.model)
-}
-
-func freeModel(model *VoskModel) {
-	C.vosk_model_free(model.model)
-}
-
-// FindWord checks if a word can be recognized by the model.
-// Returns the word symbol if the word exists inside the model or
-// -1 otherwise.
-func (m *VoskModel) FindWord(word string) int {
-	cstr := C.CString(word)
-	defer C.free(unsafe.Pointer(cstr))
-	i := C.vosk_model_find_word(m.model, cstr)
-	return int(i)
-}
-
-// VoskSpkModel contains a reference to the C VoskSpkModel
-type VoskSpkModel struct {
-	spkModel *C.struct_VoskSpkModel
-}
-
-// NewSpkModel creates a new VoskSpkModel instance
-func NewSpkModel(spkModelPath string) (*VoskSpkModel, error) {
-	cspkModelPath := C.CString(spkModelPath)
-	defer C.free(unsafe.Pointer(cspkModelPath))
-	internal := C.vosk_spk_model_new(cspkModelPath)
-	spkModel := &VoskSpkModel{spkModel: internal}
-	return spkModel, nil
-}
-
-func freeSpkModel(model *VoskSpkModel) {
-	C.vosk_spk_model_free(model.spkModel)
-}
-
-func(s *VoskSpkModel) Free() {
-	C.vosk_spk_model_free(s.spkModel)
-}
-
-// VoskRecognizer contains a reference to the C VoskRecognizer
-type VoskRecognizer struct {
-	rec *C.struct_VoskRecognizer
-}
-
-func freeRecognizer(recognizer *VoskRecognizer) {
-	C.vosk_recognizer_free(recognizer.rec)
-}
-
-func (r *VoskRecognizer) Free() {
-	C.vosk_recognizer_free(r.rec)
-}
-
-// NewRecognizer creates a new VoskRecognizer instance
-func NewRecognizer(model *VoskModel, sampleRate float64) (*VoskRecognizer, error) {
-	internal := C.vosk_recognizer_new(model.model, C.float(sampleRate))
-	rec := &VoskRecognizer{rec: internal}
-	return rec, nil
-}
-
-// NewRecognizerSpk creates a new VoskRecognizer instance with a speaker model.
-func NewRecognizerSpk(model *VoskModel, sampleRate float64, spkModel *VoskSpkModel) (*VoskRecognizer, error) {
-	internal := C.vosk_recognizer_new_spk(model.model, C.float(sampleRate), spkModel.spkModel)
-	rec := &VoskRecognizer{rec: internal}
-	return rec, nil
-}
-
-// NewRecognizerGrm creates a new VoskRecognizer instance with the phrase list.
-func NewRecognizerGrm(model *VoskModel, sampleRate float64, grammar string) (*VoskRecognizer, error) {
-	cgrammar := C.CString(grammar)
-	defer C.free(unsafe.Pointer(cgrammar))
-	internal := C.vosk_recognizer_new_grm(model.model, C.float(sampleRate), cgrammar)
-	rec := &VoskRecognizer{rec: internal}
-	return rec, nil
-}
-
-// SetSpkModel adds a speaker model to an already initialized recognizer.
-func (r *VoskRecognizer) SetSpkModel(spkModel *VoskSpkModel) {
-	C.vosk_recognizer_set_spk_model(r.rec, spkModel.spkModel)
-}
-
-// SetMaxAlternatives configures the recognizer to output n-best results.
-func (r *VoskRecognizer) SetMaxAlternatives(maxAlternatives int) {
-	C.vosk_recognizer_set_max_alternatives(r.rec, C.int(maxAlternatives))
-}
-
-// SetWords enables words with times in the ouput.
-func (r *VoskRecognizer) SetWords(words int) {
-	C.vosk_recognizer_set_words(r.rec, C.int(words))
-}
-
-// SetPartialWords enables words with times in the partial ouput.
-func (r *VoskRecognizer) SetPartialWords(words int) {
-	C.vosk_recognizer_set_partial_words(r.rec, C.int(words))
-}
-
-// AcceptWaveform accepts and processes a new chunk of the voice data.
-func (r *VoskRecognizer) AcceptWaveform(buffer []byte) int {
-	cbuf := C.CBytes(buffer)
-	defer C.free(cbuf)
-	i := C.vosk_recognizer_accept_waveform(r.rec, (*C.char)(cbuf), C.int(len(buffer)))
-	return int(i)
-}
-
-// Result returns a speech recognition result.
-func (r *VoskRecognizer) Result() string {
-	return C.GoString(C.vosk_recognizer_result(r.rec))
-}
-
-// PartialResult returns a partial speech recognition result.
-func (r *VoskRecognizer) PartialResult() string {
-	return C.GoString(C.vosk_recognizer_partial_result(r.rec))
-}
-
-// FinalResult returns a speech recognition result. Same as result, but doesn't wait
-// for silence.
-func (r *VoskRecognizer) FinalResult() string {
-	return C.GoString(C.vosk_recognizer_final_result(r.rec))
-}
-
-// Reset resets the recognizer.
-func (r *VoskRecognizer) Reset() {
-	C.vosk_recognizer_reset(r.rec)
-}
-
-// SetLogLevel sets the log level for Kaldi messages.
-func SetLogLevel(logLevel int) {
-	C.vosk_set_log_level(C.int(logLevel))
-}
-
-// GPUInit automatically selects a CUDA device and allows multithreading.
-func GPUInit() {
-	C.vosk_gpu_init()
-}
-
-// GPUThreadInit inits CUDA device in a multi-threaded environment.
-func GPUThreadInit() {
-	C.vosk_gpu_thread_init()
-}

ios/README

@@ -1,3 +0,0 @@
-This is a baseline for the vosk-api iOS demo. It requires a build of a
-Vosk-API library, mail contact@alphacephei.com for the details.
-

ios/VoskApiTest.xcodeproj/project.pbxproj

@@ -1,407 +0,0 @@
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ios/VoskApiTest.xcodeproj/project.xcworkspace/contents.xcworkspacedata

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-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "self:">
-   </FileRef>
-</Workspace>

ios/VoskApiTest/AppDelegate.swift

@@ -1,46 +0,0 @@
-//
-//  AppDelegate.swift
-//  VoskApiTest
-//
-//  Created by Niсkolay Shmyrev on 01.03.20.
-//  Copyright © 2020 Alpha Cephei. All rights reserved.
-//
-
-import UIKit
-
-@UIApplicationMain
-class AppDelegate: UIResponder, UIApplicationDelegate {
-
-    var window: UIWindow?
-
-
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
-        // Override point for customization after application launch.
-        return true
-    }
-
-    func applicationWillResignActive(_ application: UIApplication) {
-        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
-        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
-    }
-
-    func applicationDidEnterBackground(_ application: UIApplication) {
-        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
-        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
-    }
-
-    func applicationWillEnterForeground(_ application: UIApplication) {
-        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
-    }
-
-    func applicationDidBecomeActive(_ application: UIApplication) {
-        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
-    }
-
-    func applicationWillTerminate(_ application: UIApplication) {
-        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
-    }
-
-
-}
-

ios/VoskApiTest/Assets.xcassets/AppIcon.appiconset/Contents.json

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-{
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-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "20x20",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "29x29",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "40x40",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "iphone",
-      "size" : "60x60",
-      "scale" : "3x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "20x20",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "29x29",
-      "scale" : "2x"
-    },
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-      "size" : "40x40",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "40x40",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "76x76",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ipad",
-      "size" : "83.5x83.5",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "ios-marketing",
-      "size" : "1024x1024",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}

ios/VoskApiTest/Base.lproj/LaunchScreen.storyboard

@@ -1,27 +0,0 @@
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-    <dependencies>
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-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
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-        <!--View Controller-->
-        <scene sceneID="EHf-IW-A2E">
-            <objects>
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-                        <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
-                    </layoutGuides>
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-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
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-</document>

ios/VoskApiTest/Base.lproj/Main.storyboard

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-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="bdW-KL-Y8Z">
-    <device id="retina5_5" orientation="portrait">
-        <adaptation id="fullscreen"/>
-    </device>
-    <dependencies>
-        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="nEc-89-Iqu">
-            <objects>
-                <viewController id="bdW-KL-Y8Z" customClass="ViewController" customModule="VoskApiTest" customModuleProvider="target" sceneMemberID="viewController">
-                    <layoutGuides>
-                        <viewControllerLayoutGuide type="top" id="Hyr-Dz-4mU"/>
-                        <viewControllerLayoutGuide type="bottom" id="w4A-5X-uBu"/>
-                    </layoutGuides>
-                    <view key="view" contentMode="scaleToFill" id="m5v-US-bvR">
-                        <rect key="frame" x="0.0" y="0.0" width="414" height="736"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="IaT-no-U3i" userLabel="Microphone">
-                                <rect key="frame" x="124" y="34" width="157" height="30"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                                <state key="normal" title="Recognize Microphone"/>
-                                <connections>
-                                    <action selector="runRecognizeMicrohpone:" destination="bdW-KL-Y8Z" eventType="touchUpInside" id="hGB-lz-N2B"/>
-                                </connections>
-                            </button>
-                            <button opaque="NO" contentMode="scaleToFill" fixedFrame="YES" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="GC5-nT-FQR" userLabel="File">
-                                <rect key="frame" x="90" y="84" width="221" height="41"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                                <state key="normal" title="Recognize File"/>
-                                <connections>
-                                    <action selector="runRecognizeFile:" destination="bdW-KL-Y8Z" eventType="touchUpInside" id="xp5-Yi-rnN"/>
-                                </connections>
-                            </button>
-                            <textView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" fixedFrame="YES" text="Results here" textAlignment="natural" translatesAutoresizingMaskIntoConstraints="NO" id="w4X-cu-USq">
-                                <rect key="frame" x="11" y="112" width="383" height="569"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
-                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
-                                <textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
-                            </textView>
-                        </subviews>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
-                    </view>
-                    <connections>
-                        <outlet property="mainText" destination="w4X-cu-USq" id="rZS-nz-Wql"/>
-                        <outlet property="recognizeFile" destination="GC5-nT-FQR" id="dRe-tc-IA0"/>
-                        <outlet property="recognizeMicrophone" destination="IaT-no-U3i" id="IuM-aa-pAP"/>
-                    </connections>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="nWA-4D-pA6" userLabel="First Responder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="-17.39130434782609" y="-285.32608695652175"/>
-        </scene>
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ios/VoskApiTest/Info.plist

@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>en</string>
-	<key>CFBundleExecutable</key>
-	<string>$(EXECUTABLE_NAME)</string>
-	<key>CFBundleIdentifier</key>
-	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>$(PRODUCT_NAME)</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleShortVersionString</key>
-	<string>1.0</string>
-	<key>CFBundleVersion</key>
-	<string>1</string>
-	<key>LSRequiresIPhoneOS</key>
-	<true/>
-	<key>UILaunchStoryboardName</key>
-	<string>LaunchScreen</string>
-	<key>UIMainStoryboardFile</key>
-	<string>Main</string>
-	<key>UIRequiredDeviceCapabilities</key>
-	<array>
-		<string>armv7</string>
-	</array>
-	<key>UISupportedInterfaceOrientations</key>
-	<array>
-		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-	</array>
-	<key>UISupportedInterfaceOrientations~ipad</key>
-	<array>
-		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationPortraitUpsideDown</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-	</array>
-</dict>
-</plist>

ios/VoskApiTest/ViewController.swift

@@ -1,117 +0,0 @@
-//
-//  ViewController.swift
-//  VoskApiTest
-//
-//  Created by Niсkolay Shmyrev on 01.03.20.
-//  Copyright © 2020-2021 Alpha Cephei. All rights reserved.
-//
-
-import UIKit
-import AVFoundation
-
-enum WorkMode {
-    case stopped
-    case microphone
-    case file
-}
-
-class ViewController: UIViewController {
-    
-    var mode: WorkMode!
-    
-    @IBOutlet weak var recognizeFile: UIButton!
-    @IBOutlet weak var mainText: UITextView!
-    @IBOutlet weak var recognizeMicrophone: UIButton!
-    
-    var audioEngine : AVAudioEngine!
-    var processingQueue: DispatchQueue!
-    var model : VoskModel!
-    
-    func setMode(mode: WorkMode) {
-        switch mode {
-        case .stopped:
-            self.recognizeFile.isEnabled = true
-            self.recognizeMicrophone.isEnabled = true
-            self.recognizeMicrophone.setTitle("Recognize Microphone",for: .normal)
-        case .microphone:
-            self.recognizeFile.isEnabled = false
-            self.recognizeMicrophone.isEnabled = true
-            self.recognizeMicrophone.setTitle("Stop Microphone",for: .normal)
-            self.mainText.text = ""
-        case .file:
-            self.recognizeFile.isEnabled = false
-            self.recognizeMicrophone.isEnabled = false
-            self.mainText.text =  "Processing file..."
-        }
-        self.mode = mode
-    }
-    
-    func startAudioEngine() {
-        do {
-            
-            // Create a new audio engine.
-            audioEngine = AVAudioEngine()
-            
-            let inputNode = audioEngine.inputNode
-            let formatInput = inputNode.inputFormat(forBus: 0)
-            let formatPcm = AVAudioFormat.init(commonFormat: AVAudioCommonFormat.pcmFormatInt16, sampleRate: formatInput.sampleRate, channels: 1, interleaved: true)
-            
-            let recognizer = Vosk(model: model, sampleRate: Float(formatInput.sampleRate))
-            
-            inputNode.installTap(onBus: 0,
-                                 bufferSize: UInt32(formatInput.sampleRate / 10),
-                                 format: formatPcm) { buffer, time in
-                                    self.processingQueue.async {
-                                        let res = recognizer.recognizeData(buffer: buffer)
-                                        DispatchQueue.main.async {
-                                            self.mainText.text = res + "\n" + self.mainText.text
-                                        }
-                                    }
-            }
-            
-            // Start the stream of audio data.
-            audioEngine.prepare()
-            try audioEngine.start()
-        } catch {
-            print("Unable to start AVAudioEngine: \(error.localizedDescription)")
-        }
-    }
-    
-    func stopAudioEngine() {
-        audioEngine.stop()
-    }
-    
-    @IBAction func runRecognizeMicrohpone(_ sender: Any) {
-        if (mode == .stopped) {
-            setMode(mode: .microphone)
-            startAudioEngine()
-        } else {
-            stopAudioEngine()
-            setMode(mode: .stopped)
-        }
-    }
-    
-    @IBAction func runRecognizeFile(_ sender: Any) {
-        setMode(mode: .file)
-        processingQueue.async {
-            let recognizer = Vosk(model: self.model, sampleRate: 16000.0)
-            let res = recognizer.recognizeFile()
-            DispatchQueue.main.async {
-                self.mainText.text = res
-                self.setMode(mode: .stopped)
-            }
-        }
-    }
-    
-    override func viewDidLoad() {
-        super.viewDidLoad()
-        setMode(mode: .stopped)
-        processingQueue = DispatchQueue(label: "recognizerQueue")
-        model = VoskModel()
-    }
-    
-    override func didReceiveMemoryWarning() {
-        super.didReceiveMemoryWarning()
-    }
-}
-

ios/VoskApiTest/Vosk.swift

@@ -1,54 +0,0 @@
-//
-//  Vosk.swift
-//  VoskApiTest
-//
-//  Created by Niсkolay Shmyrev on 01.03.20.
-//  Copyright © 2020-2021 Alpha Cephei. All rights reserved.
-//
-
-import Foundation
-import AVFoundation
-
-public final class Vosk {
-    
-    var recognizer : OpaquePointer!
-
-    init(model: VoskModel, sampleRate: Float) {
-        recognizer = vosk_recognizer_new_spk(model.model, sampleRate, model.spkModel)
-    }
-    
-    deinit {
-        vosk_recognizer_free(recognizer);
-    }
-    
-    func recognizeFile() -> String {
-        var sres = ""
-        
-        if let resourcePath = Bundle.main.resourcePath {
-            
-            let audioFile = URL(fileURLWithPath: resourcePath + "/10001-90210-01803.wav")
-    
-            if let data = try? Data(contentsOf: audioFile) {
-                    let _ = data.withUnsafeBytes {
-                        vosk_recognizer_accept_waveform(recognizer, $0, Int32(data.count))
-                    }
-                    let res = vosk_recognizer_final_result(recognizer);
-                    sres = String(validatingUTF8: res!)!;
-                    print(sres);
-            }
-        }
-        
-        return sres
-    }
-    
-    
-    func recognizeData(buffer : AVAudioPCMBuffer) -> String {
-        let dataLen = Int(buffer.frameLength * 2)
-        let channels = UnsafeBufferPointer(start: buffer.int16ChannelData, count: 1)
-        let endOfSpeech = channels[0].withMemoryRebound(to: Int8.self, capacity: dataLen) {
-            vosk_recognizer_accept_waveform(recognizer, $0, Int32(dataLen))
-        }
-        let res = endOfSpeech == 1 ?vosk_recognizer_result(recognizer) :vosk_recognizer_partial_result(recognizer)
-        return String(validatingUTF8: res!)!;
-    }
-}

ios/VoskApiTest/Vosk/vosk_api.h

@@ -1,292 +0,0 @@
-// Copyright 2020-2021 Alpha Cephei Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//       http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/* This header contains the C API for Vosk speech recognition system */
-
-#ifndef VOSK_API_H
-#define VOSK_API_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/** Model stores all the data required for recognition
- *  it contains static data and can be shared across processing
- *  threads. */
-typedef struct VoskModel VoskModel;
-
-
-/** Speaker model is the same as model but contains the data
- *  for speaker identification. */
-typedef struct VoskSpkModel VoskSpkModel;
-
-
-/** Recognizer object is the main object which processes data.
- *  Each recognizer usually runs in own thread and takes audio as input.
- *  Once audio is processed recognizer returns JSON object as a string
- *  which represent decoded information - words, confidences, times, n-best lists,
- *  speaker information and so on */
-typedef struct VoskRecognizer VoskRecognizer;
-
-
-/** Loads model data from the file and returns the model object
- *
- * @param model_path: the path of the model on the filesystem
- * @returns model object or NULL if problem occured */
-VoskModel *vosk_model_new(const char *model_path);
-
-
-/** Releases the model memory
- *
- *  The model object is reference-counted so if some recognizer
- *  depends on this model, model might still stay alive. When
- *  last recognizer is released, model will be released too. */
-void vosk_model_free(VoskModel *model);
-
-
-/** Check if a word can be recognized by the model
- * @param word: the word
- * @returns the word symbol if @param word exists inside the model
- * or -1 otherwise.
- * Reminding that word symbol 0 is for <epsilon> */
-int vosk_model_find_word(VoskModel *model, const char *word);
-
-
-/** Loads speaker model data from the file and returns the model object
- *
- * @param model_path: the path of the model on the filesystem
- * @returns model object or NULL if problem occured */
-VoskSpkModel *vosk_spk_model_new(const char *model_path);
-
-
-/** Releases the model memory
- *
- *  The model object is reference-counted so if some recognizer
- *  depends on this model, model might still stay alive. When
- *  last recognizer is released, model will be released too. */
-void vosk_spk_model_free(VoskSpkModel *model);
-
-/** Creates the recognizer object
- *
- *  The recognizers process the speech and return text using shared model data
- *  @param model       VoskModel containing static data for recognizer. Model can be
- *                     shared across recognizers, even running in different threads.
- *  @param sample_rate The sample rate of the audio you going to feed into the recognizer.
- *                     Make sure this rate matches the audio content, it is a common
- *                     issue causing accuracy problems.
- *  @returns recognizer object or NULL if problem occured */
-VoskRecognizer *vosk_recognizer_new(VoskModel *model, float sample_rate);
-
-
-/** Creates the recognizer object with speaker recognition
- *
- *  With the speaker recognition mode the recognizer not just recognize
- *  text but also return speaker vectors one can use for speaker identification
- *
- *  @param model       VoskModel containing static data for recognizer. Model can be
- *                     shared across recognizers, even running in different threads.
- *  @param sample_rate The sample rate of the audio you going to feed into the recognizer.
- *                     Make sure this rate matches the audio content, it is a common
- *                     issue causing accuracy problems.
- *  @param spk_model speaker model for speaker identification
- *  @returns recognizer object or NULL if problem occured */
-VoskRecognizer *vosk_recognizer_new_spk(VoskModel *model, float sample_rate, VoskSpkModel *spk_model);
-
-
-/** Creates the recognizer object with the phrase list
- *
- *  Sometimes when you want to improve recognition accuracy and when you don't need
- *  to recognize large vocabulary you can specify a list of phrases to recognize. This
- *  will improve recognizer speed and accuracy but might return [unk] if user said
- *  something different.
- *
- *  Only recognizers with lookahead models support this type of quick configuration.
- *  Precompiled HCLG graph models are not supported.
- *
- *  @param model       VoskModel containing static data for recognizer. Model can be
- *                     shared across recognizers, even running in different threads.
- *  @param sample_rate The sample rate of the audio you going to feed into the recognizer.
- *                     Make sure this rate matches the audio content, it is a common
- *                     issue causing accuracy problems.
- *  @param grammar The string with the list of phrases to recognize as JSON array of strings,
- *                 for example "["one two three four five", "[unk]"]".
- *
- *  @returns recognizer object or NULL if problem occured */
-VoskRecognizer *vosk_recognizer_new_grm(VoskModel *model, float sample_rate, const char *grammar);
-
-
-/** Adds speaker model to already initialized recognizer
- *
- * Can add speaker recognition model to already created recognizer. Helps to initialize
- * speaker recognition for grammar-based recognizer.
- *
- * @param spk_model Speaker recognition model */
-void vosk_recognizer_set_spk_model(VoskRecognizer *recognizer, VoskSpkModel *spk_model);
-
-
-/** Configures recognizer to output n-best results
- *
- * <pre>
- *   {
- *      "alternatives": [
- *          { "text": "one two three four five", "confidence": 0.97 },
- *          { "text": "one two three for five", "confidence": 0.03 },
- *      ]
- *   }
- * </pre>
- *
- * @param max_alternatives - maximum alternatives to return from recognition results
- */
-void vosk_recognizer_set_max_alternatives(VoskRecognizer *recognizer, int max_alternatives);
-
-
-/** Enables words with times in the output
- *
- * <pre>
- *   "result" : [{
- *       "conf" : 1.000000,
- *       "end" : 1.110000,
- *       "start" : 0.870000,
- *       "word" : "what"
- *     }, {
- *       "conf" : 1.000000,
- *       "end" : 1.530000,
- *       "start" : 1.110000,
- *       "word" : "zero"
- *     }, {
- *       "conf" : 1.000000,
- *       "end" : 1.950000,
- *       "start" : 1.530000,
- *       "word" : "zero"
- *     }, {
- *       "conf" : 1.000000,
- *       "end" : 2.340000,
- *       "start" : 1.950000,
- *       "word" : "zero"
- *     }, {
- *       "conf" : 1.000000,
- *       "end" : 2.610000,
- *       "start" : 2.340000,
- *       "word" : "one"
- *     }],
- * </pre>
- *
- * @param words - boolean value
- */
-void vosk_recognizer_set_words(VoskRecognizer *recognizer, int words);
-
-
-/** Accept voice data
- *
- *  accept and process new chunk of voice data
- *
- *  @param data - audio data in PCM 16-bit mono format
- *  @param length - length of the audio data
- *  @returns 1 if silence is occured and you can retrieve a new utterance with result method 
- *           0 if decoding continues
- *           -1 if exception occured */
-int vosk_recognizer_accept_waveform(VoskRecognizer *recognizer, const char *data, int length);
-
-
-/** Same as above but the version with the short data for language bindings where you have
- *  audio as array of shorts */
-int vosk_recognizer_accept_waveform_s(VoskRecognizer *recognizer, const short *data, int length);
-
-
-/** Same as above but the version with the float data for language bindings where you have
- *  audio as array of floats */
-int vosk_recognizer_accept_waveform_f(VoskRecognizer *recognizer, const float *data, int length);
-
-
-/** Returns speech recognition result
- *
- * @returns the result in JSON format which contains decoded line, decoded
- *          words, times in seconds and confidences. You can parse this result
- *          with any json parser
- *
- * <pre>
- *  {
- *    "text" : "what zero zero zero one"
- *  }
- * </pre>
- *
- * If alternatives enabled it returns result with alternatives, see also vosk_recognizer_set_alternatives().
- *
- * If word times enabled returns word time, see also vosk_recognizer_set_word_times().
- */
-const char *vosk_recognizer_result(VoskRecognizer *recognizer);
-
-
-/** Returns partial speech recognition
- *
- * @returns partial speech recognition text which is not yet finalized.
- *          result may change as recognizer process more data.
- *
- * <pre>
- * {
- *    "partial" : "cyril one eight zero"
- * }
- * </pre>
- */
-const char *vosk_recognizer_partial_result(VoskRecognizer *recognizer);
-
-
-/** Returns speech recognition result. Same as result, but doesn't wait for silence
- *  You usually call it in the end of the stream to get final bits of audio. It
- *  flushes the feature pipeline, so all remaining audio chunks got processed.
- *
- *  @returns speech result in JSON format.
- */
-const char *vosk_recognizer_final_result(VoskRecognizer *recognizer);
-
-
-/** Resets the recognizer
- *
- *  Resets current results so the recognition can continue from scratch */
-void vosk_recognizer_reset(VoskRecognizer *recognizer);
-
-
-/** Releases recognizer object
- *
- *  Underlying model is also unreferenced and if needed released */
-void vosk_recognizer_free(VoskRecognizer *recognizer);
-
-/** Set log level for Kaldi messages
- *
- *  @param log_level the level
- *     0 - default value to print info and error messages but no debug
- *     less than 0 - don't print info messages
- *     greather than 0 - more verbose mode
- */
-void vosk_set_log_level(int log_level);
-
-/**
- *  Init, automatically select a CUDA device and allow multithreading.
- *  Must be called once from the main thread.
- *  Has no effect if HAVE_CUDA flag is not set.
- */
-void vosk_gpu_init();
-
-/**
- *  Init CUDA device in a multi-threaded environment.
- *  Must be called for each thread.
- *  Has no effect if HAVE_CUDA flag is not set.
- */
-void vosk_gpu_thread_init();
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* VOSK_API_H */

ios/VoskApiTest/VoskModel.swift

@@ -1,36 +0,0 @@
-//
-//  Vosk.swift
-//  VoskApiTest
-//
-//  Created by Niсkolay Shmyrev on 01.03.20.
-//  Copyright © 2020-2021 Alpha Cephei. All rights reserved.
-//
-
-import Foundation
-
-public final class VoskModel {
-    
-    var model : OpaquePointer!
-    var spkModel : OpaquePointer!
-    
-    init() {
-        
-        // Set to -1 to disable logs
-        vosk_set_log_level(0);
-        
-        if let resourcePath = Bundle.main.resourcePath {
-            let modelPath = resourcePath + "/vosk-model-small-en-us-0.15"
-            let spkModelPath = resourcePath + "/vosk-model-spk-0.4"
-            
-            model = vosk_model_new(modelPath)
-            spkModel = vosk_spk_model_new(spkModelPath)
-        }
-    }
-    
-    deinit {
-        vosk_model_free(model)
-        vosk_spk_model_free(spkModel)
-    }
-    
-}
-

ios/VoskApiTest/bridging.h

@@ -1 +0,0 @@
-#import "Vosk/vosk_api.h"

java/demo/build.gradle

@@ -1,16 +0,0 @@
-plugins {
-    id 'application'
-}
-
-application {
-    mainClass = 'org.vosk.demo.DecoderDemo'
-}
-
-repositories {
-    mavenCentral()
-}
-
-dependencies {
-    implementation group: 'net.java.dev.jna', name: 'jna', version: '5.7.0'
-    implementation group: 'com.alphacephei', name: 'vosk', version: '0.3.40+'
-}

java/demo/src/main/java/org/vosk/demo/DecoderDemo.java

@@ -1,38 +0,0 @@
-package org.vosk.demo;
-
-import java.io.FileInputStream;
-import java.io.BufferedInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-
-import javax.sound.sampled.AudioSystem;
-import javax.sound.sampled.UnsupportedAudioFileException;
-
-import org.vosk.LogLevel;
-import org.vosk.Recognizer;
-import org.vosk.LibVosk;
-import org.vosk.Model;
-
-public class DecoderDemo {
-
-    public static void main(String[] argv) throws IOException, UnsupportedAudioFileException {
-        LibVosk.setLogLevel(LogLevel.DEBUG);
-
-        try (Model model = new Model("model");
-                    InputStream ais = AudioSystem.getAudioInputStream(new BufferedInputStream(new FileInputStream("../../python/example/test.wav")));
-                    Recognizer recognizer = new Recognizer(model, 16000)) {
-
-            int nbytes;
-            byte[] b = new byte[4096];
-            while ((nbytes = ais.read(b)) >= 0) {
-                if (recognizer.acceptWaveForm(b, nbytes)) {
-                    System.out.println(recognizer.getResult());
-                } else {
-                    System.out.println(recognizer.getPartialResult());
-                }
-            }
-
-            System.out.println(recognizer.getFinalResult());
-        }
-    }
-}

java/lib/src/main/java/org/vosk/LogLevel.java

@@ -1,17 +0,0 @@
-package org.vosk;
-
-public enum LogLevel {
-    WARNINGS(-1),  // Print warning and errors
-    INFO(0),       // Print info, along with warning and error messages, but no debug
-    DEBUG(1);      // Print debug info
-
-    private final int value;
-
-    LogLevel(int value) {
-        this.value = value;
-    }
-
-    public int getValue() {
-        return this.value;
-    }
-}

java/lib/src/main/java/org/vosk/Recognizer.java

@@ -1,71 +0,0 @@
-package org.vosk;
-
-import com.sun.jna.PointerType;
-import java.io.IOException;
-
-public class Recognizer extends PointerType implements AutoCloseable {
-    public Recognizer(Model model, float sampleRate) throws IOException {
-        super(LibVosk.vosk_recognizer_new(model, sampleRate));
-
-        if (getPointer() == null) {
-            throw new IOException("Failed to create a recognizer");
-        }
-    }
-
-    public Recognizer(Model model, float sampleRate, SpeakerModel spkModel) {
-        super(LibVosk.vosk_recognizer_new_spk(model.getPointer(), sampleRate, spkModel.getPointer()));
-    }
-
-    public Recognizer(Model model, float sampleRate, String grammar) {
-        super(LibVosk.vosk_recognizer_new_grm(model.getPointer(), sampleRate, grammar));
-    }
-
-    public void setMaxAlternatives(int maxAlternatives) {
-        LibVosk.vosk_recognizer_set_max_alternatives(this.getPointer(), maxAlternatives);
-    }
-
-    public void setWords(boolean words) {
-        LibVosk.vosk_recognizer_set_words(this.getPointer(), words);
-    }
-
-    public void setPartialWords(boolean partial_words) {
-        LibVosk.vosk_recognizer_set_partial_words(this.getPointer(), partial_words);
-    }
-
-    public void setSpeakerModel(SpeakerModel spkModel) {
-        LibVosk.vosk_recognizer_set_spk_model(this.getPointer(), spkModel.getPointer());
-    }
-
-    public boolean acceptWaveForm(byte[] data, int len) {
-        return LibVosk.vosk_recognizer_accept_waveform(this.getPointer(), data, len);
-    }
-
-    public boolean acceptWaveForm(short[] data, int len) {
-        return LibVosk.vosk_recognizer_accept_waveform_s(this.getPointer(), data, len);
-    }
-
-    public boolean acceptWaveForm(float[] data, int len) {
-        return LibVosk.vosk_recognizer_accept_waveform_f(this.getPointer(), data, len);
-    }
-
-    public String getResult() {
-        return LibVosk.vosk_recognizer_result(this.getPointer());
-    }
-
-    public String getPartialResult() {
-        return LibVosk.vosk_recognizer_partial_result(this.getPointer());
-    }
-
-    public String getFinalResult() {
-        return LibVosk.vosk_recognizer_final_result(this.getPointer());
-    }
-
-    public void reset() {
-        LibVosk.vosk_recognizer_reset(this.getPointer());
-    }
-
-    @Override
-    public void close() {
-        LibVosk.vosk_recognizer_free(this.getPointer());
-    }
-}

java/lib/src/main/java/org/vosk/SpeakerModel.java

@@ -1,22 +0,0 @@
-package org.vosk;
-
-import com.sun.jna.PointerType;
-import java.io.IOException;
-
-public class SpeakerModel extends PointerType implements AutoCloseable {
-    public SpeakerModel() {
-    }
-
-    public SpeakerModel(String path) throws IOException {
-        super(LibVosk.vosk_spk_model_new(path));
-
-        if (getPointer() == null) {
-            throw new IOException("Failed to create a speaker model");
-        }
-    }
-
-    @Override
-    public void close() {
-        LibVosk.vosk_spk_model_free(this.getPointer());
-    }
-}

java/lib/src/main/resources/win32-x86-64/empty

@@ -1 +0,0 @@
-Mainly for work around JNA API

java/lib/src/test/java/org/vosk/test/DecoderTest.java

@@ -1,103 +0,0 @@
-package org.vosk.test;
-
-import java.io.FileInputStream;
-import java.io.BufferedInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-
-import org.junit.Test;
-import org.junit.Assert;
-
-import javax.sound.sampled.AudioSystem;
-import javax.sound.sampled.UnsupportedAudioFileException;
-
-import org.vosk.LogLevel;
-import org.vosk.Recognizer;
-import org.vosk.LibVosk;
-import org.vosk.Model;
-
-public class DecoderTest {
-
-    @Test
-    public void decoderTest() throws IOException, UnsupportedAudioFileException {
-        LibVosk.setLogLevel(LogLevel.DEBUG);
-
-        try (Model model = new Model("model");
-            InputStream ais = AudioSystem.getAudioInputStream(new BufferedInputStream(new FileInputStream("../../python/example/test.wav")));
-            Recognizer recognizer = new Recognizer(model, 16000)) {
-
-            recognizer.setMaxAlternatives(10);
-            recognizer.setWords(true);
-            recognizer.setPartialWords(true);
-
-            int nbytes;
-            byte[] b = new byte[4096];
-            while ((nbytes = ais.read(b)) >= 0) {
-                if (recognizer.acceptWaveForm(b, nbytes)) {
-                    System.out.println(recognizer.getResult());
-                } else {
-                    System.out.println(recognizer.getPartialResult());
-                }
-            }
-
-            System.out.println(recognizer.getFinalResult());
-        }
-        Assert.assertTrue(true);
-    }
-
-    @Test
-    public void decoderTestShort() throws IOException, UnsupportedAudioFileException {
-        LibVosk.setLogLevel(LogLevel.DEBUG);
-
-        try (Model model = new Model("model");
-            InputStream ais = AudioSystem.getAudioInputStream(new BufferedInputStream(new FileInputStream("../../python/example/test.wav")));
-            Recognizer recognizer = new Recognizer(model, 16000)) {
-
-            int nbytes;
-            byte[] b = new byte[4096];
-            short[] s = new short[2048];
-            while ((nbytes = ais.read(b)) >= 0) {
-                ByteBuffer.wrap(b).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().get(s);
-                if (recognizer.acceptWaveForm(s, nbytes / 2)) {
-                    System.out.println(recognizer.getResult());
-                } else {
-                    System.out.println(recognizer.getPartialResult());
-                }
-            }
-
-            System.out.println(recognizer.getFinalResult());
-        }
-        Assert.assertTrue(true);
-    }
-
-    @Test
-    public void decoderTestGrammar() throws IOException, UnsupportedAudioFileException {
-        LibVosk.setLogLevel(LogLevel.DEBUG);
-
-        try (Model model = new Model("model");
-            InputStream ais = AudioSystem.getAudioInputStream(new BufferedInputStream(new FileInputStream("../../python/example/test.wav")));
-            Recognizer recognizer = new Recognizer(model, 16000, "[\"one two three four five six seven eight nine zero oh\"]")) {
-
-            int nbytes;
-            byte[] b = new byte[4096];
-            while ((nbytes = ais.read(b)) >= 0) {
-                if (recognizer.acceptWaveForm(b, nbytes)) {
-                    System.out.println(recognizer.getResult());
-                } else {
-                    System.out.println(recognizer.getPartialResult());
-                }
-            }
-
-            System.out.println(recognizer.getFinalResult());
-        }
-        Assert.assertTrue(true);
-    }
-
-
-    @Test(expected = IOException.class)
-    public void decoderTestException() throws IOException {
-        Model model = new Model("model_missing");
-    }
-}

nodejs/.npmignore

@@ -1,3 +0,0 @@
-demo/model
-demo/model-spk
-demo/test.wav

nodejs/README.md

@@ -1,34 +0,0 @@
-This is an FFI-NAPI wrapper for the Vosk library.
-
-## Usage
-
-Bindings mostly follow Vosk interface, some methods are not yet fully implemented.
-
-See [demo folder](https://github.com/alphacep/vosk-api/tree/master/nodejs/demo) for
-details.
-
-## About
-
-Vosk is an offline open source speech recognition toolkit. It enables
-speech recognition for 20+ languages and dialects - English, Indian
-English, German, French, Spanish, Portuguese, Chinese, Russian, Turkish,
-Vietnamese, Italian, Dutch, Catalan, Arabic, Greek, Farsi, Filipino,
-Ukrainian, Kazakh, Swedish, Japanese, Esperanto, Hindi, Czech, Polish.
-More to come.
-
-Vosk models are small (50 Mb) but provide continuous large vocabulary
-transcription, zero-latency response with streaming API, reconfigurable
-vocabulary and speaker identification.
-
-Vosk supplies speech recognition for chatbots, smart home appliances,
-virtual assistants. It can also create subtitles for movies,
-transcription for lectures and interviews.
-
-Vosk scales from small devices like Raspberry Pi or Android smartphone to
-big clusters.
-
-# Documentation
-
-For installation instructions, examples and documentation visit [Vosk
-Website](https://alphacephei.com/vosk). See also our project on
-[Github](https://github.com/alphacep/vosk-api).

nodejs/demo/test_ffmpeg.js

@@ -1,33 +0,0 @@
-var vosk = require('..')
-
-const fs = require("fs");
-const { spawn } = require("child_process");
-
-MODEL_PATH = "model"
-FILE_NAME = "test.wav"
-SAMPLE_RATE = 16000
-BUFFER_SIZE = 4000
-
-if (!fs.existsSync(MODEL_PATH)) {
-    console.log("Please download the model from https://alphacephei.com/vosk/models and unpack as " + MODEL_PATH + " in the current folder.")
-    process.exit()
-}
-
-if (process.argv.length > 2)
-    FILE_NAME = process.argv[2]
-
-vosk.setLogLevel(0);
-const model = new vosk.Model(MODEL_PATH);
-const rec = new vosk.Recognizer({model: model, sampleRate: SAMPLE_RATE});
-
-const ffmpeg_run = spawn('ffmpeg', ['-loglevel', 'quiet', '-i', FILE_NAME,
-                         '-ar', String(SAMPLE_RATE) , '-ac', '1',
-                         '-f', 's16le', '-bufsize', String(BUFFER_SIZE) , '-']);
-
-ffmpeg_run.stdout.on('data', (stdout) => {
-    if (rec.acceptWaveform(stdout))
-        console.log(rec.result());
-    else
-        console.log(rec.partialResult());
-    console.log(rec.finalResult());
-});

nodejs/demo/test_microphone.js

@@ -1,46 +0,0 @@
-var vosk = require('..')
-
-const fs = require("fs");
-var mic = require("mic");
-
-MODEL_PATH = "model"
-SAMPLE_RATE = 16000
-
-if (!fs.existsSync(MODEL_PATH)) {
-    console.log("Please download the model from https://alphacephei.com/vosk/models and unpack as " + MODEL_PATH + " in the current folder.")
-    process.exit()
-}
-
-vosk.setLogLevel(0);
-const model = new vosk.Model(MODEL_PATH);
-const rec = new vosk.Recognizer({model: model, sampleRate: SAMPLE_RATE});
-
-var micInstance = mic({
-    rate: String(SAMPLE_RATE),
-    channels: '1',
-    debug: false,
-    device: 'default',    
-});
-
-var micInputStream = micInstance.getAudioStream();
-
-micInputStream.on('data', data => {
-    if (rec.acceptWaveform(data))
-        console.log(rec.result());
-    else
-        console.log(rec.partialResult());
-});
-
-micInputStream.on('audioProcessExitComplete', function() {
-    console.log("Cleaning up");
-    console.log(rec.finalResult());
-    rec.free();
-    model.free();
-});
-
-process.on('SIGINT', function() {
-    console.log("\nStopping");
-    micInstance.stop();
-});
-
-micInstance.start();

nodejs/demo/test_simple.js

@@ -1,48 +0,0 @@
-var vosk = require('..')
-
-const fs = require("fs");
-const { Readable } = require("stream");
-const wav = require("wav");
-
-MODEL_PATH = "model"
-FILE_NAME = "test.wav"
-
-if (!fs.existsSync(MODEL_PATH)) {
-    console.log("Please download the model from https://alphacephei.com/vosk/models and unpack as " + MODEL_PATH + " in the current folder.")
-    process.exit()
-}
-
-if (process.argv.length > 2)
-    FILE_NAME = process.argv[2]
-
-vosk.setLogLevel(0);
-const model = new vosk.Model(MODEL_PATH);
-
-const wfReader = new wav.Reader();
-const wfReadable = new Readable().wrap(wfReader);
-
-wfReader.on('format', async ({ audioFormat, sampleRate, channels }) => {
-    if (audioFormat != 1 || channels != 1) {
-        console.error("Audio file must be WAV format mono PCM.");
-        process.exit(1);
-    }
-    const rec = new vosk.Recognizer({model: model, sampleRate: sampleRate});
-    rec.setMaxAlternatives(10);
-    rec.setWords(true);
-    rec.setPartialWords(true);
-    for await (const data of wfReadable) {
-        const end_of_speech = rec.acceptWaveform(data);
-        if (end_of_speech) {
-              console.log(JSON.stringify(rec.result(), null, 4));
-        } else {
-              console.log(JSON.stringify(rec.partialResult(), null, 4));
-        }
-    }
-    console.log(JSON.stringify(rec.finalResult(rec), null, 4));
-    rec.free();
-});
-
-fs.createReadStream(FILE_NAME, {'highWaterMark': 4096}).pipe(wfReader).on('finish', 
-    function (err) {
-        model.free();
-});