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Update to 0.3.21
Move to JNA instead of JNR-FFI for better Android compatibility
2021-02-12 22:24:54 +01:00 · 2021-02-12 10:13:50 +01:00 · 2021-02-11 00:04:19 +01:00 · 2021-02-10 23:32:47 +01:00 · 2021-02-10 23:16:20 +01:00 · 2021-02-09 23:43:56 +01:00
77 changed files with 1435 additions and 915 deletions
@@ -10,7 +10,7 @@

 # Gradle files
 .gradle/
-build/
+android/build/
 gradlew
 gradlew.bat
 gradle
@@ -27,12 +27,8 @@ wheelhouse
 __pycache__
 *.egg-info
 python/dist
-python/vosk/*.cc
-python/vosk/*.c
-python/vosk/*.h
-python/vosk/*.i
-python/vosk/vosk.py
-python/vosk/vosk_wrap.cpp
+python/build
+python/vosk/*.so
 python/test/db
 python/test/hyp
 python/test/model
@@ -48,16 +44,24 @@ java/model-spk/
 java/model/

 # CSharp
-csharp/gen
-csharp/*.exe
-csharp/*.c
-csharp/model/
-csharp/test.wav
+*.dll
+*.so
+*.nupkg
+csharp/demo/model
+csharp/demo/test.wav
+csharp/demo/bin
+csharp/demo/obj

 # Node
-nodejs/vosk_wrap.cc
-nodejs/example/model
-nodejs/example/test.wav
+nodejs/demo/model
+nodejs/demo/model-spk
+nodejs/demo/test.wav
 nodejs/node_modules
 nodejs/package-lock.json
-nodejs/build
+
+# C
+c/test_vosk
+c/test_vosk_speaker
+c/oprofile_data
+c/model
+c/test.wav
@@ -7,11 +7,10 @@ matrix:
      services:
        - docker
      env: DOCKER_IMAGE=alphacep/kaldi-manylinux:latest
-           PLAT=manylinux2010_x86_64

 install:
  - docker pull $DOCKER_IMAGE

 script:
-  - docker run --rm -e PLAT=$PLAT -v `pwd`:/io $DOCKER_IMAGE $PRE_CMD /io/travis/build-wheels.sh
+  - docker run --rm -v `pwd`:/io $DOCKER_IMAGE $PRE_CMD /io/travis/build-wheels.sh
  - ls wheelhouse/
@@ -1,9 +1,9 @@
 # About

 Vosk is an offline open source speech recognition toolkit. It enables
-speech recognition models for 16 languages and dialects - English, Indian
+speech recognition models for 17 languages and dialects - English, Indian
 English, German, French, Spanish, Portuguese, Chinese, Russian, Turkish,
-Vietnamese, Italian, Dutch, Catalan, Arabic, Greek, Farsi.
+Vietnamese, Italian, Dutch, Catalan, Arabic, Greek, Farsi, Filipino.

 Vosk models are small (50 Mb) but provide continuous large vocabulary
 transcription, zero-latency response with streaming API, reconfigurable
@@ -32,7 +32,7 @@ set(API_SOURCES
 "${PROJECT_SOURCE_DIR}/../src/vosk_api.h"
 )

-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 -DFST_NO_DYNAMIC_LINKING")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17 -O3 -DFST_NO_DYNAMIC_LINKING")

 add_library( vosk_jni SHARED
             build/generated-src/cpp/vosk_wrap.cc
@@ -60,7 +60,7 @@ target_link_libraries( vosk_jni
             ${KALDI_ROOT}/src/base/kaldi-base.a
             ${LIB_ROOT}/lib/libfst.a
             ${LIB_ROOT}/lib/libfstngram.a
-             ${LIB_ROOT}/lib/libopenblas_${OPENBLAS_ARCH}-r0.3.7.a
+             ${LIB_ROOT}/lib/libopenblas.a
             ${LIB_ROOT}/lib/libclapack.a
             ${LIB_ROOT}/lib/liblapack.a
             ${LIB_ROOT}/lib/libblas.a
@@ -1,22 +1,3 @@
-This is still work in progress, more to come
+Vosk library for Android

-## TODO
-
-   * Optimize graph construction, current one is below accuracy
-
-   * Load model from the AAR (mmap them in tflite style)
-
-   * Add decoding speed measurement
-
-   * Add wakeup word
-
-   * Add speakerid
-
-   * Integrate proper hardware optimized neural network library. Candidates are:
-
-      * https://github.com/XiaoMi/mace
-      * https://github.com/Tencent/ncnn
-      * https://developer.android.com/ndk/guides/neuralnetworks/ (since API level 27)
-      * https://github.com/google/XNNPACK
-
-   * Quantization for the models
+See for details https://alphacephei.com/vosk/android
@@ -39,7 +39,7 @@ WORKDIR_X86_64=`pwd`/build/kaldi_x86_64
 WORKDIR_ARM32=`pwd`/build/kaldi_arm_32
 WORKDIR_ARM64=`pwd`/build/kaldi_arm_64
 PATH=$PATH:$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/${OS_NAME}-x86_64/bin
-OPENFST_VERSION=1.6.7
+OPENFST_VERSION=1.8.0

 mkdir -p $WORKDIR_ARM64/local/lib $WORKDIR_ARM32/local/lib $WORKDIR_X86_64/local/lib $WORKDIR_X86/local/lib

@@ -106,7 +106,7 @@ esac

 # openblas first
 cd $WORKDIR
-git clone -b v0.3.7 --single-branch https://github.com/xianyi/OpenBLAS
+git clone -b v0.3.13 --single-branch https://github.com/xianyi/OpenBLAS
 make -C OpenBLAS TARGET=$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

@@ -130,7 +130,7 @@ if [ "`uname`" == "Darwin"  ]; then
 fi

 CXX=$CXX CXXFLAGS="$ARCHFLAGS -O3 -DFST_NO_DYNAMIC_LINKING" ./configure --use-cuda=no \
-    --mathlib=OPENBLAS --shared \
+    --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}
@@ -14,7 +14,7 @@ plugins {
 }

 def archiveName = "vosk-android"
-def libVersion = "0.3.15"
+def libVersion = "0.3.17"

 allprojects {
  repositories {
@@ -0,0 +1,71 @@
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.5.3'
+        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.5'
+    }
+}
+
+plugins {
+    id "com.jfrog.bintray"
+}
+
+def archiveName = "vosk-model-en"
+def libVersion = "0.3.17"
+
+allprojects {
+  repositories {
+      google()
+      jcenter()
+  }
+}
+
+apply plugin: 'com.android.library'
+apply plugin: 'maven-publish'
+
+android {
+    compileSdkVersion 29
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode 6
+        versionName = libVersion
+        archivesBaseName = archiveName
+    }
+}
+
+Properties properties = new Properties()
+properties.load(project.rootProject.file('local.properties').newDataInputStream())
+
+bintray {
+    user = properties.getProperty("bintray.user")
+    key = properties.getProperty("bintray.apikey")
+    pkg {
+        repo = 'vosk'
+        name = 'vosk-model-en'
+        userOrg = "alphacep"
+        licenses = ['Apache2.0']
+        websiteUrl = 'https://github.com/alphacep/vosk-api'
+        issueTrackerUrl = 'https://github.com/alphacep/vosk-api/issues'
+        vcsUrl = 'https://github.com/alphacep/vosk-api'
+        version {
+            name = libVersion
+            vcsTag = libVersion
+        }
+    }
+    publications = ['aar']
+}
+
+publishing {
+    publications {
+        aar(MavenPublication) {
+            groupId 'com.alphacep'
+            artifactId archiveName
+            version libVersion
+            artifact("$buildDir/outputs/aar/$archiveName-release.aar")
+        }
+    }
+}
@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="org.kaldi.model.en">
+</manifest>
@@ -0,0 +1,7 @@
+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)
@@ -0,0 +1 @@
+0.3.16
@@ -0,0 +1 @@
+include 'model-en'
@@ -1,50 +1,16 @@
-KALDI_ROOT=$(HOME)/travis/kaldi
-
-VOSK_SOURCES= \
-    ../src/kaldi_recognizer.cc \
-    ../src/language_model.cc \
-    ../src/model.cc \
-    ../src/spk_model.cc \
-    ../src/vosk_api.cc
-
-CFLAGS=-g -O2 -DFST_NO_DYNAMIC_LINKING -I../src -I$(KALDI_ROOT)/src -I$(KALDI_ROOT)/tools/openfst/include
-LIBS= \
-	$(KALDI_ROOT)/src/online2/kaldi-online2.a \
-	$(KALDI_ROOT)/src/decoder/kaldi-decoder.a \
-	$(KALDI_ROOT)/src/ivector/kaldi-ivector.a \
-	$(KALDI_ROOT)/src/gmm/kaldi-gmm.a \
-	$(KALDI_ROOT)/src/nnet3/kaldi-nnet3.a \
-	$(KALDI_ROOT)/src/tree/kaldi-tree.a \
-	$(KALDI_ROOT)/src/feat/kaldi-feat.a \
-	$(KALDI_ROOT)/src/lat/kaldi-lat.a \
-	$(KALDI_ROOT)/src/lm/kaldi-lm.a \
-	$(KALDI_ROOT)/src/hmm/kaldi-hmm.a \
-	$(KALDI_ROOT)/src/transform/kaldi-transform.a \
-	$(KALDI_ROOT)/src/cudamatrix/kaldi-cudamatrix.a \
-	$(KALDI_ROOT)/src/matrix/kaldi-matrix.a \
-	$(KALDI_ROOT)/src/fstext/kaldi-fstext.a \
-	$(KALDI_ROOT)/src/util/kaldi-util.a \
-	$(KALDI_ROOT)/src/base/kaldi-base.a \
-	$(KALDI_ROOT)/tools/OpenBLAS/libopenblas.a \
-	$(KALDI_ROOT)/tools/openfst/lib/libfst.a \
-	$(KALDI_ROOT)/tools/openfst/lib/libfstngram.a
+CFLAGS=-I../src
+LDFLAGS=-L../src -lvosk -ldl -lpthread -Wl,-rpath=../src

 all: test_vosk test_vosk_speaker

-test_vosk: test_vosk.o libvosk.a
-	g++ $^ -o $@ $(LIBS) -lgfortran -lpthread
+test_vosk: test_vosk.o
+	g++ $^ -o $@ $(LDFLAGS)

-test_vosk_speaker: test_vosk_speaker.o libvosk.a
-	g++ $^ -o $@ $(LIBS) -lgfortran -lpthread
-
-libvosk.a: $(VOSK_SOURCES:.cc=.o)
-	ar rcs $@ $^
+test_vosk_speaker: test_vosk_speaker.o
+	g++ $^ -o $@ $(LDFLAGS)

 %.o: %.c
 	g++ $(CFLAGS) -c -o $@ $<

-%.o: %.cc
-	g++ -std=c++11 $(CFLAGS) -c -o $@ $<
-
 clean:
-	rm -f *.o *.a test_vosk
+	rm -f *.o *.a test_vosk test_vosk_speaker
@@ -24,5 +24,6 @@ int main() {

    vosk_recognizer_free(recognizer);
    vosk_model_free(model);
+    fclose(wavin);
    return 0;
 }
@@ -1,62 +0,0 @@
-KALDI_ROOT ?= $(HOME)/kaldi
-CFLAGS :=  -std=c++11 -g -O2 -DPIC -fPIC -Wno-unused-function
-CPPFLAGS := -I$(KALDI_ROOT)/src -I$(KALDI_ROOT)/tools/openfst/include -I../src -DFST_NO_DYNAMIC_LINKING
-
-KALDI_LIBS = \
-             ${KALDI_ROOT}/src/online2/kaldi-online2.a \
-             ${KALDI_ROOT}/src/decoder/kaldi-decoder.a \
-             ${KALDI_ROOT}/src/ivector/kaldi-ivector.a \
-             ${KALDI_ROOT}/src/gmm/kaldi-gmm.a \
-             ${KALDI_ROOT}/src/nnet3/kaldi-nnet3.a \
-             ${KALDI_ROOT}/src/tree/kaldi-tree.a \
-             ${KALDI_ROOT}/src/feat/kaldi-feat.a \
-             ${KALDI_ROOT}/src/lat/kaldi-lat.a \
-             ${KALDI_ROOT}/src/lm/kaldi-lm.a \
-             ${KALDI_ROOT}/src/hmm/kaldi-hmm.a \
-             ${KALDI_ROOT}/src/transform/kaldi-transform.a \
-             ${KALDI_ROOT}/src/cudamatrix/kaldi-cudamatrix.a \
-             ${KALDI_ROOT}/src/matrix/kaldi-matrix.a \
-             ${KALDI_ROOT}/src/fstext/kaldi-fstext.a \
-             ${KALDI_ROOT}/src/util/kaldi-util.a \
-             ${KALDI_ROOT}/src/base/kaldi-base.a \
-             ${KALDI_ROOT}/tools/openfst/lib/libfst.a \
-             ${KALDI_ROOT}/tools/openfst/lib/libfstngram.a
-
-# On Linux
-MATH_LIBS = ${KALDI_ROOT}/tools/OpenBLAS/libopenblas.a -lgfortran
-# On OSX
-# MATH_LIBS = -framework Accelerate
-
-all: test.exe
-
-test.exe: libkaldiwrap.so test.cs
-	mcs test.cs gen/*.cs
-
-VOSK_SOURCES = \
-	vosk_wrap.c \
-	../src/kaldi_recognizer.cc \
-	../src/language_model.cc \
-	../src/model.cc \
-	../src/spk_model.cc \
-	../src/vosk_api.cc
-
-VOSK_HEADERS = \
-	../src/kaldi_recognizer.h \
-	../src/language_model.h \
-	../src/model.h \
-	../src/vosk_api.h \
-	../src/spk_model.h
-
-libkaldiwrap.so: $(VOSK_SOURCES) $(VOSK_HEADERS)
-	$(CXX) -fpermissive $(CFLAGS) $(CPPFLAGS) -shared -o $@ $(VOSK_SOURCES) $(KALDI_LIBS) $(MATH_LIBS)
-
-vosk_wrap.c: ../src/vosk.i
-	mkdir -p gen
-	swig -csharp -DSWIG_CSHARP_NO_EXCEPTION_HELPER -dllimport "libkaldiwrap" \
-	    -namespace "Kaldi" -outdir gen -o vosk_wrap.c ../src/vosk.i
-
-run: test.exe
-	mono test.exe
-
-clean:
-	$(RM) *.so vosk_wrap.c *.o gen/*.cs test.exe
@@ -0,0 +1,12 @@
+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.
@@ -1,15 +1,15 @@
 using System;
 using System.IO;
-using Kaldi;
+using Vosk;

 public class Test
 {
   public static void Main()
   {

-        Vosk.SetLogLevel(0);
+        Vosk.Vosk.SetLogLevel(0);
        Model model = new Model("model");
-        KaldiRecognizer rec = new KaldiRecognizer(model, 16000.0f);
+        VoskRecognizer rec = new VoskRecognizer(model, 16000.0f);

        using(Stream source = File.OpenRead("test.wav")) {
            byte[] buffer = new byte[4096];
@@ -24,7 +24,7 @@ public class Test
        }
        Console.WriteLine(rec.FinalResult());

-        rec = new KaldiRecognizer(model, 16000.0f);
+        rec = new VoskRecognizer(model, 16000.0f);

        using(Stream source = File.OpenRead("test.wav")) {
            byte[] buffer = new byte[4096];
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+    <RootNamespace>VoskDemo</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Vosk" Version="0.3.19" />
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,30 @@
+<?xml version="1.0"?>
+<package>
+  <metadata>
+    <id>Vosk</id>
+    <version>0.3.19</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>
+    <description>Vosk is an offline open source speech recognition toolkit. It enables speech recognition models for 16 languages and dialects - English, Indian English, German, French, Spanish, Portuguese, Chinese, Russian, Turkish, Vietnamese, Italian, Dutch, Catalan, Arabic, Greek, Farsi.
+
+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>
+    <copyright>Copyright 2020 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>
@@ -0,0 +1,2 @@
+mcs -out:lib/netstandard2.0/Vosk.dll -target:library src/*.cs
+nuget pack
@@ -0,0 +1,10 @@
+<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))'" />
+    <None Include="@(NativeLibs)">
+      <Link>%(FileName)%(Extension)</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+</Project>
@@ -0,0 +1,41 @@
+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 vosk_model_find_word(string word) {
+    return VoskPINVOKE.Model_vosk_model_find_word(handle, word);
+  }
+
+}
+
+}
@@ -0,0 +1,37 @@
+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)) {
+  }
+
+}
+
+}
@@ -0,0 +1,10 @@
+namespace Vosk {
+
+public class Vosk {
+  public static void SetLogLevel(int level) {
+    VoskPINVOKE.SetLogLevel(level);
+  }
+
+}
+
+}
@@ -0,0 +1,57 @@
+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, global::System.Runtime.InteropServices.HandleRef jarg2, float 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_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_set_log_level")]
+  public static extern void SetLogLevel(int jarg1);
+}
+
+}
@@ -0,0 +1,67 @@
+namespace Vosk {
+
+public class VoskRecognizer : global::System.IDisposable {
+  private global::System.Runtime.InteropServices.HandleRef handle;
+
+  internal VoskRecognizer(global::System.IntPtr cPtr) {
+    handle = new global::System.Runtime.InteropServices.HandleRef(this, cPtr);
+  }
+
+  internal static global::System.Runtime.InteropServices.HandleRef getCPtr(VoskRecognizer obj) {
+    return (obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.handle;
+  }
+
+  ~VoskRecognizer() {
+    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_VoskRecognizer(handle);
+        handle = new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero);
+      }
+    }
+  }
+
+  public VoskRecognizer(Model model, float sample_rate) : this(VoskPINVOKE.new_VoskRecognizer(Model.getCPtr(model), sample_rate)) {
+  }
+
+  public VoskRecognizer(Model model, SpkModel spk_model, float sample_rate) : this(VoskPINVOKE.new_VoskRecognizerSpk(Model.getCPtr(model), SpkModel.getCPtr(spk_model), sample_rate)) {
+  }
+
+  public VoskRecognizer(Model model, float sample_rate, string grammar) : this(VoskPINVOKE.new_VoskRecognizerGrm(Model.getCPtr(model), sample_rate, grammar)) {
+  }
+
+  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);
+  }
+
+  public string Result() {
+    return global::System.Runtime.InteropServices.Marshal.PtrToStringUTF8(VoskPINVOKE.VoskRecognizer_Result(handle));
+  }
+
+  public string PartialResult() {
+    return global::System.Runtime.InteropServices.Marshal.PtrToStringUTF8(VoskPINVOKE.VoskRecognizer_PartialResult(handle));
+  }
+
+  public string FinalResult() {
+    return global::System.Runtime.InteropServices.Marshal.PtrToStringUTF8(VoskPINVOKE.VoskRecognizer_FinalResult(handle));
+  }
+
+}
+
+}
@@ -16,56 +16,12 @@
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-		92375268240C6EFE00DD6076 /* Gr.fst in CopyFiles */ = {isa = PBXBuildFile; fileRef = 9237524A240C6E3D00DD6076 /* Gr.fst */; };
-		92375269240C6EFE00DD6076 /* HCLr.fst in CopyFiles */ = {isa = PBXBuildFile; fileRef = 9237524B240C6E3D00DD6076 /* HCLr.fst */; };
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 /* End PBXBuildFile section */

-/* Begin PBXCopyFilesBuildPhase section */
-		92375265240C6ECF00DD6076 /* CopyFiles */ = {
-			isa = PBXCopyFilesBuildPhase;
-			buildActionMask = 2147483647;
-			dstPath = "model-en";
-			dstSubfolderSpec = 7;
-			files = (
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-				92375267240C6EFE00DD6076 /* final.mdl in CopyFiles */,
-				92375268240C6EFE00DD6076 /* Gr.fst in CopyFiles */,
-				92375269240C6EFE00DD6076 /* HCLr.fst in CopyFiles */,
-				9237526A240C6EFE00DD6076 /* mfcc.conf in CopyFiles */,
-				9237526B240C6EFE00DD6076 /* word_boundary.int in CopyFiles */,
-				9237526C240C6EFE00DD6076 /* words.txt in CopyFiles */,
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-		9237526D240C6F0400DD6076 /* CopyFiles */ = {
-			isa = PBXCopyFilesBuildPhase;
-			buildActionMask = 2147483647;
-			dstPath = "model-en/ivector";
-			dstSubfolderSpec = 7;
-			files = (
-				9237526E240C6F1500DD6076 /* final.dubm in CopyFiles */,
-				9237526F240C6F1500DD6076 /* final.ie in CopyFiles */,
-				92375270240C6F1500DD6076 /* final.mat in CopyFiles */,
-				92375271240C6F1500DD6076 /* global_cmvn.stats in CopyFiles */,
-				92375272240C6F1500DD6076 /* online_cmvn.conf in CopyFiles */,
-				92375273240C6F1500DD6076 /* splice.conf in CopyFiles */,
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXCopyFilesBuildPhase section */
-
 /* Begin PBXFileReference section */
 		9237521E240C550B00DD6076 /* VoskApiTest.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = VoskApiTest.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		92375221240C550B00DD6076 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
@@ -78,22 +34,12 @@
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-		9237524A240C6E3D00DD6076 /* Gr.fst */ = {isa = PBXFileReference; lastKnownFileType = file; path = Gr.fst; sourceTree = "<group>"; };
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-		9237524D240C6E3D00DD6076 /* final.dubm */ = {isa = PBXFileReference; lastKnownFileType = file; path = final.dubm; sourceTree = "<group>"; };
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+		928CC50C25BE124400490481 /* vosk-model-small-en-us-0.15 */ = {isa = PBXFileReference; lastKnownFileType = folder; name = "vosk-model-small-en-us-0.15"; path = "/Users/shmyrev/Documents/IOS/VoskApiTest/VoskApiTest/Vosk/vosk-model-small-en-us-0.15"; sourceTree = "<absolute>"; };
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 		92AA22AE244CDD5200DA464B /* bridging.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = bridging.h; sourceTree = "<group>"; };
+		92D6B8D225BDFEAC007FF08D /* VoskModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VoskModel.swift; sourceTree = "<group>"; };
+		92D86BD4253F823F0040D53F /* vosk-model-spk-0.4 */ = {isa = PBXFileReference; lastKnownFileType = folder; path = "vosk-model-spk-0.4"; sourceTree = "<group>"; };
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
@@ -139,6 +85,7 @@
 				9237522A240C550B00DD6076 /* LaunchScreen.storyboard */,
 				9237522D240C550B00DD6076 /* Info.plist */,
 				92375233240C558900DD6076 /* Vosk.swift */,
+				92D6B8D225BDFEAC007FF08D /* VoskModel.swift */,
 			);
 			path = VoskApiTest;
 			sourceTree = "<group>";
@@ -146,7 +93,8 @@
 		92375239240C642000DD6076 /* Vosk */ = {
 			isa = PBXGroup;
 			children = (
-				92375247240C6E3D00DD6076 /* model-android */,
+				928CC50C25BE124400490481 /* vosk-model-small-en-us-0.15 */,
+				92D86BD4253F823F0040D53F /* vosk-model-spk-0.4 */,
 				92375256240C6E3D00DD6076 /* 10001-90210-01803.wav */,
 				92AA22AD244CDD1200DA464B /* vosk_api.h */,
 				9237523A240C642000DD6076 /* libkaldiwrap.a */,
@@ -164,34 +112,6 @@
 			name = Frameworks;
 			sourceTree = "<group>";
 		};
-		92375247240C6E3D00DD6076 /* model-android */ = {
-			isa = PBXGroup;
-			children = (
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-				92375249240C6E3D00DD6076 /* final.mdl */,
-				9237524A240C6E3D00DD6076 /* Gr.fst */,
-				9237524B240C6E3D00DD6076 /* HCLr.fst */,
-				9237524C240C6E3D00DD6076 /* ivector */,
-				92375253240C6E3D00DD6076 /* mfcc.conf */,
-				92375254240C6E3D00DD6076 /* word_boundary.int */,
-				92375255240C6E3D00DD6076 /* words.txt */,
-			);
-			path = "model-android";
-			sourceTree = "<group>";
-		};
-		9237524C240C6E3D00DD6076 /* ivector */ = {
-			isa = PBXGroup;
-			children = (
-				9237524D240C6E3D00DD6076 /* final.dubm */,
-				9237524E240C6E3D00DD6076 /* final.ie */,
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-				92375252240C6E3D00DD6076 /* splice.conf */,
-			);
-			path = ivector;
-			sourceTree = "<group>";
-		};
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 /* Begin PBXNativeTarget section */
@@ -202,8 +122,6 @@
 				9237521A240C550B00DD6076 /* Sources */,
 				9237521B240C550B00DD6076 /* Frameworks */,
 				9237521C240C550B00DD6076 /* Resources */,
-				92375265240C6ECF00DD6076 /* CopyFiles */,
-				9237526D240C6F0400DD6076 /* CopyFiles */,
 			);
 			buildRules = (
 			);
@@ -254,9 +172,11 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				92BACED125BE125A00B5CC93 /* vosk-model-small-en-us-0.15 in Resources */,
 				92375274240C6F1E00DD6076 /* 10001-90210-01803.wav in Resources */,
 				9237522C240C550B00DD6076 /* LaunchScreen.storyboard in Resources */,
 				92375229240C550B00DD6076 /* Assets.xcassets in Resources */,
+				92D86BD6253F823F0040D53F /* vosk-model-spk-0.4 in Resources */,
 				92375227240C550B00DD6076 /* Main.storyboard in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -270,6 +190,7 @@
 			files = (
 				92375224240C550B00DD6076 /* ViewController.swift in Sources */,
 				92375222240C550B00DD6076 /* AppDelegate.swift in Sources */,
+				92D6B8D325BDFEAC007FF08D /* VoskModel.swift in Sources */,
 				92375234240C558900DD6076 /* Vosk.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -412,7 +333,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				ENABLE_BITCODE = NO;
+				ENABLE_BITCODE = YES;
 				INFOPLIST_FILE = VoskApiTest/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				LIBRARY_SEARCH_PATHS = (
@@ -434,7 +355,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
-				ENABLE_BITCODE = NO;
+				ENABLE_BITCODE = YES;
 				INFOPLIST_FILE = VoskApiTest/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				LIBRARY_SEARCH_PATHS = (
@@ -2,6 +2,9 @@
 <Workspace
   version = "1.0">
   <FileRef
-      location = "self:VoskApiTest.xcodeproj">
+      location = "group:/Users/shmyrev/Documents/IOS/VoskApiTest/VoskApiTest/Vosk/vosk-model-small-en-us-0.15">
+   </FileRef>
+   <FileRef
+      location = "self:">
   </FileRef>
 </Workspace>
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<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="BYZ-38-t0r">
-    <device id="retina4_7" orientation="portrait">
+<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>
@@ -10,23 +10,52 @@
    </dependencies>
    <scenes>
        <!--View Controller-->
-        <scene sceneID="tne-QT-ifu">
+        <scene sceneID="nEc-89-Iqu">
            <objects>
-                <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="VoskApiTest" customModuleProvider="target" sceneMemberID="viewController">
-                    <textView key="view" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" editable="NO" textAlignment="natural" id="CtX-mx-X98">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
-                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                <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"/>
-                        <fontDescription key="fontDescription" type="system" pointSize="14"/>
-                        <textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
-                    </textView>
+                    </view>
                    <connections>
-                        <outlet property="mainText" destination="CtX-mx-X98" id="oJy-5J-NKp"/>
+                        <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="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="nWA-4D-pA6" userLabel="First Responder" sceneMemberID="firstResponder"/>
            </objects>
-            <point key="canvasLocation" x="32.799999999999997" y="32.833583208395808"/>
+            <point key="canvasLocation" x="-17.39130434782609" y="-285.32608695652175"/>
        </scene>
    </scenes>
 </document>
@@ -3,30 +3,113 @@
 //  VoskApiTest
 //
 //  Created by Niсkolay Shmyrev on 01.03.20.
-//  Copyright © 2020 Alpha Cephei. All rights reserved.
+//  Copyright © 2020-2021 Alpha Cephei. All rights reserved.
 //

 import UIKit
+import AVFoundation
+
+enum WorkMode {
+    case stopped
+    case microphone
+    case file
+}

 class ViewController: UIViewController {
-
-    @IBOutlet var mainText: UITextView!
-
-    override func viewDidLoad() {
-        super.viewDidLoad()
    
-        DispatchQueue.global(qos: .userInitiated).async {
-            DispatchQueue.main.async {
-                 self.mainText.text =  "Processing file..."
+    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
+                                        }
+                                    }
            }
-            let vosk = Vosk()
-            let res = vosk.recognizeFile()
+            
+            // 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()
    }
@@ -3,35 +3,52 @@
 //  VoskApiTest
 //
 //  Created by Niсkolay Shmyrev on 01.03.20.
-//  Copyright © 2020 Alpha Cephei. All rights reserved.
+//  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, model.spkModel, sampleRate)
+    }
+    
+    deinit {
+        vosk_recognizer_free(recognizer);
+    }
+    
    func recognizeFile() -> String {
        var sres = ""
+        
        if let resourcePath = Bundle.main.resourcePath {
-
-            let modelPath = resourcePath + "/model-en"
-
-            let model = vosk_model_new(modelPath);
-            let recognizer = vosk_recognizer_new(model, 16000.0)
-
+            
            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);
+                    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);
            }
-
-            vosk_recognizer_free(recognizer)
-            vosk_model_free(model)
        }
+        
        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!)!;
+    }
 }
@@ -88,10 +88,10 @@ VoskRecognizer *vosk_recognizer_new(VoskModel *model, float sample_rate);
 VoskRecognizer *vosk_recognizer_new_spk(VoskModel *model, VoskSpkModel *spk_model, float sample_rate);


-/** Creates the recognizer object with the grammar
+/** 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 words to recognize. This
+ *  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.
 *
@@ -99,7 +99,8 @@ VoskRecognizer *vosk_recognizer_new_spk(VoskModel *model, VoskSpkModel *spk_mode
 *  Precompiled HCLG graph models are not supported.
 *
 *  @param sample_rate The sample rate of the audio you going to feed into the recognizer
- *  @param grammar The string with the list of words to recognize, for example "one two three four five [unk]"
+ *  @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 */
 VoskRecognizer *vosk_recognizer_new_grm(VoskModel *model, float sample_rate, const char *grammar);
@@ -0,0 +1,36 @@
+//
+//  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)
+    }
+    
+}
+
@@ -1,67 +0,0 @@
-KALDI_ROOT ?= $(HOME)/kaldi
-CFLAGS := -g -O2 -DPIC -fPIC -Wno-unused-function
-CPPFLAGS := -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux -I$(KALDI_ROOT)/src -I$(KALDI_ROOT)/tools/openfst/include -I../src
-
-KALDI_LIBS = \
-             ${KALDI_ROOT}/src/online2/kaldi-online2.a \
-             ${KALDI_ROOT}/src/decoder/kaldi-decoder.a \
-             ${KALDI_ROOT}/src/ivector/kaldi-ivector.a \
-             ${KALDI_ROOT}/src/gmm/kaldi-gmm.a \
-             ${KALDI_ROOT}/src/nnet3/kaldi-nnet3.a \
-             ${KALDI_ROOT}/src/tree/kaldi-tree.a \
-             ${KALDI_ROOT}/src/feat/kaldi-feat.a \
-             ${KALDI_ROOT}/src/lat/kaldi-lat.a \
-             ${KALDI_ROOT}/src/lm/kaldi-lm.a \
-             ${KALDI_ROOT}/src/hmm/kaldi-hmm.a \
-             ${KALDI_ROOT}/src/transform/kaldi-transform.a \
-             ${KALDI_ROOT}/src/cudamatrix/kaldi-cudamatrix.a \
-             ${KALDI_ROOT}/src/matrix/kaldi-matrix.a \
-             ${KALDI_ROOT}/src/fstext/kaldi-fstext.a \
-             ${KALDI_ROOT}/src/util/kaldi-util.a \
-             ${KALDI_ROOT}/src/base/kaldi-base.a \
-             ${KALDI_ROOT}/tools/openfst/lib/libfst.a \
-             ${KALDI_ROOT}/tools/openfst/lib/libfstngram.a \
-             ${KALDI_ROOT}/tools/OpenBLAS/libopenblas.a \
-             -lgfortran
-
-all: libvosk_jni.so
-
-VOSK_SOURCES = \
-	vosk_wrap.cc \
-	../src/kaldi_recognizer.cc \
-	../src/kaldi_recognizer.h \
-	../src/language_model.cc \
-	../src/language_model.h \
-	../src/model.cc \
-	../src/model.h \
-	../src/spk_model.cc \
-	../src/spk_model.h \
-	../src/vosk_api.cc \
-	../src/vosk_api.h
-
-libvosk_jni.so: $(VOSK_SOURCES)
-	$(CXX) -shared -o $@ $(CPPFLAGS) $(CFLAGS) $(VOSK_SOURCES) $(KALDI_LIBS)
-
-vosk_wrap.cc: ../src/vosk.i
-	mkdir -p org/kaldi
-	swig -c++ -I../src \
-		-java -package org.kaldi \
-		-outdir org/kaldi -o $@ $<
-
-clean:
-	$(RM) *.so *_wrap.cc *_wrap.o test/*.class
-	$(RM) -r org model-en
-
-model:
-	wget https://alphacephei.com/kaldi/models/vosk-model-small-en-us-0.3.zip
-	unzip vosk-model-small-en-us-0.3.zip && rm vosk-model-small-en-us-0.3.zip
-	mv vosk-model-small-en-us-0.3 model
-
-model-spk:
-	wget https://alphacephei.com/kaldi/models/vosk-model-spk-0.3.zip
-	unzip vosk-model-spk-0.3.zip && rm vosk-model-spk-0.3.zip
-	mv vosk-model-spk-0.3 model-spk
-
-run: model model-spk
-	javac test/*.java org/kaldi/*.java
-	java -Djava.library.path=. -cp . test.DecoderTest
@@ -1,19 +1,5 @@
-Java API sample
+Java Vosk API using jnr-ffi

-Doesn't work on Windows or Mac yet, help to prepare the packaged jars is welcome.
+Still needs classes to wrap C code

-For now to try it:
-
-On Linux you can do
-
-   1. Build recent kaldi
-   1. `git clone https://github.com/alphacep/vosk-api`
-   1. `cd vosk-api/java`
-   1. `export KALDI_ROOT=<KALDI_ROOT>`
-   1. `export JAVA_HOME=<JAVA_HOME>`
-   1. `make`
-   1. `make run`
-
-For details of the code you can check:
-
-https://github.com/alphacep/vosk-api/blob/master/java/test/DecoderTest.java
+Run with simple gradle build. Unpack model and put libvosk library in current folder.
@@ -0,0 +1,12 @@
+apply plugin: "application"
+
+mainClassName = "test.DecoderTest"
+applicationDefaultJvmArgs = ['-Djna.library.path=.']
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation group: 'net.java.dev.jna', name: 'jna', version: '4.5.0'
+}
@@ -0,0 +1,49 @@
+package test;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.nio.*;
+
+import com.sun.jna.Library;
+import com.sun.jna.Native;
+import com.sun.jna.Platform;
+import com.sun.jna.Pointer;
+
+public class DecoderTest {
+    public interface LibVosk extends Library {
+        static LibVosk INSTANCE = (LibVosk) Native.loadLibrary("vosk", LibVosk.class);
+
+        void vosk_set_log_level(int level);
+        Pointer vosk_model_new(String path);
+        void vosk_model_free(Pointer model);
+        Pointer vosk_recognizer_new(Pointer model, float sample_rate);
+        boolean vosk_recognizer_accept_waveform(Pointer recognizer, byte[] data, int len);
+        String vosk_recognizer_result(Pointer recognizer);
+        String vosk_recognizer_final_result(Pointer recognizer);
+        String vosk_recognizer_partial_result(Pointer recognizer);
+        void vosk_recognizer_free(Pointer recognizer);
+    }
+
+    public static void main(String[] args) throws IOException {
+        LibVosk.INSTANCE.vosk_set_log_level(0);
+        Pointer model = LibVosk.INSTANCE.vosk_model_new("model");
+
+        FileInputStream ais = new FileInputStream(new File("../python/example/test.wav"));
+        Pointer rec = LibVosk.INSTANCE.vosk_recognizer_new(model, 16000.0f);
+
+        int nbytes;
+        byte[] b = new byte[4096];
+        while ((nbytes = ais.read(b)) >= 0) {
+            if (LibVosk.INSTANCE.vosk_recognizer_accept_waveform(rec, b, nbytes)) {
+                System.out.println(LibVosk.INSTANCE.vosk_recognizer_result(rec));
+            } else {
+                System.out.println(LibVosk.INSTANCE.vosk_recognizer_partial_result(rec));
+            }
+         }
+        System.out.println(LibVosk.INSTANCE.vosk_recognizer_final_result(rec));
+        LibVosk.INSTANCE.vosk_recognizer_free(rec);
+        LibVosk.INSTANCE.vosk_model_free(model);
+    }
+}
@@ -1,37 +0,0 @@
-package test;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.DataOutputStream;
-import java.io.IOException;
-import java.net.URL;
-import java.nio.*;
-
-import org.kaldi.KaldiRecognizer;
-import org.kaldi.Model;
-import org.kaldi.SpkModel;
-import org.kaldi.Vosk;
-
-public class DecoderTest {
-
-    public static void main(String args[]) throws IOException {
-        Vosk.SetLogLevel(-10);
-
-        FileInputStream ais = new FileInputStream(new File("../python/example/test.wav"));
-        Model model = new Model("model");
-        SpkModel spkModel = new SpkModel("model-spk");
-        KaldiRecognizer rec = new KaldiRecognizer(model, spkModel, 16000.0f);
-
-        int nbytes;
-        byte[] b = new byte[4096];
-        while ((nbytes = ais.read(b)) >= 0) {
-            if (rec.AcceptWaveform(b)) {
-                System.out.println(rec.Result());
-            } else {
-                System.out.println(rec.PartialResult());
-            }
-        }
-        System.out.println(rec.FinalResult());
-    }
-}
@@ -1,3 +1,3 @@
-build
-node_modules
-vosk_wrap.cc
+demo/model
+demo/model-spk
+demo/test.wav
@@ -1,20 +1,33 @@
-Installation requires vosk-api checkout, it doesn't yet work with `npm
-install vosk`. We have to figure out how to properly distribute native
-modules for Vosk.
+This is an FFI-NAPI wrapper for the Vosk library.

-The build tested with node-0.10.15, node-0.12 is not yet supported by swig.
+## Usage

-Still, you need swig of newest version 4.0.1
+It mostly follows Vosk interface, some methods are not yet fully implemented.

-Build like this
+To use it you need to compile libvosk library, see Python module build
+instructions for details. You can find prebuilt library inside python
+wheel.

-```
-npm install --kaldi_root=/home/user/kaldi
-```
+## About

-Then test with
+Vosk is an offline open source speech recognition toolkit. It enables
+speech recognition models for 17 languages and dialects - English, Indian
+English, German, French, Spanish, Portuguese, Chinese, Russian, Turkish,
+Vietnamese, Italian, Dutch, Catalan, Arabic, Greek, Farsi, Filipino.

-```
-cd example
-node test.js
-```
+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).
@@ -1,80 +0,0 @@
-{
-  'targets': [
-    {
-      'target_name': 'vosk',
-      'sources': [
-         '../src/kaldi_recognizer.cc',
-         '../src/model.cc',
-         '../src/language_model.cc',
-         '../src/spk_model.cc',
-         '../src/vosk_api.cc',
-         'vosk_wrap.cc',
-      ],
-      'cflags': [
-          '-std=c++11',
-          '-DFST_NO_DYNAMIC_LINKING',
-          '-Wno-deprecated-declarations',
-          '-Wno-sign-compare',
-          '-Wno-unused-local-typedefs',
-          '-Wno-ignored-quaifiers',
-          '-Wno-extra',
-      ],
-      'cflags_cc!' : [
-          '-fno-rtti',
-          '-fno-exceptions',
-      ],
-      'conditions': [
-          ['OS == "mac"', {
-              'xcode_settings': {
-                  'GCC_ENABLE_CPP_EXCEPTIONS': 'YES',
-                  'GCC_ENABLE_CPP_RTTI': 'YES',
-                  'CLANG_CXX_LANGUAGE_STANDARD': 'c++11'
-              }
-          }]
-      ],
-      'actions': [
-        {
-          'action_name': 'swig',
-          'inputs': [
-            '../src/vosk.i',
-          ],
-          'outputs': [
-            'vosk_wrap.cc',
-          ],
-          'action': ['swig', '-c++', '-javascript', '-o', 'vosk_wrap.cc', '-v8', '-DV8_MAJOR_VERSION=10', '../src/vosk.i']
-        },
-      ],
-      'include_dirs': [
-         '<@(kaldi_root)/src',
-         '<@(kaldi_root)/tools/openfst/include',
-         '../src',
-      ],
-      'link_settings': {
-         'libraries': [
-             '<@(kaldi_root)/src/online2/kaldi-online2.a',
-             '<@(kaldi_root)/src/decoder/kaldi-decoder.a',
-             '<@(kaldi_root)/src/ivector/kaldi-ivector.a',
-             '<@(kaldi_root)/src/gmm/kaldi-gmm.a',
-             '<@(kaldi_root)/src/nnet3/kaldi-nnet3.a',
-             '<@(kaldi_root)/src/tree/kaldi-tree.a',
-             '<@(kaldi_root)/src/feat/kaldi-feat.a',
-             '<@(kaldi_root)/src/lat/kaldi-lat.a',
-             '<@(kaldi_root)/src/lm/kaldi-lm.a',
-             '<@(kaldi_root)/src/hmm/kaldi-hmm.a',
-             '<@(kaldi_root)/src/transform/kaldi-transform.a',
-             '<@(kaldi_root)/src/cudamatrix/kaldi-cudamatrix.a',
-             '<@(kaldi_root)/src/matrix/kaldi-matrix.a',
-             '<@(kaldi_root)/src/fstext/kaldi-fstext.a',
-             '<@(kaldi_root)/src/util/kaldi-util.a',
-             '<@(kaldi_root)/src/base/kaldi-base.a',
-             '<@(kaldi_root)/tools/openfst/lib/libfst.a',
-             '<@(kaldi_root)/tools/openfst/lib/libfstngram.a',
-             '<@(kaldi_root)/tools/OpenBLAS/libopenblas.a',
-          ],
-         'library_dirs': [
-               '/usr/lib',
-          ],
-      },
-    }
-  ]
-}
@@ -0,0 +1,30 @@
+var vosk = require('..')
+
+const fs = require("fs");
+const { Readable } = require("stream");
+const wav = require("wav");
+
+vosk.setLogLevel(0);
+const model = new vosk.Model("model");
+const rec = new vosk.Recognizer(model, 16000.0);
+
+const wfStream = fs.createReadStream("test.wav", {'highWaterMark': 4096});
+const wfReader = new wav.Reader();
+
+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);
+    }
+    for await (const data of new Readable().wrap(wfReader)) {
+        const end_of_speech = rec.acceptWaveform(data);
+        if (end_of_speech) {
+              console.log(rec.result());
+        }
+    }
+    console.log(rec.finalResult(rec));
+    rec.free();
+    model.free();
+});
+
+wfStream.pipe(wfReader);
@@ -1,90 +0,0 @@
-const wav = require('wav')
-const fs = require('fs')
-
-const {Readable} = require('stream')
-const {Model, KaldiRecognizer, SpkModel} = require('..')
-
-try {
-    fs.accessSync('model', fs.constants.R_OK)
-} catch (err) {
-    console.error("Please download the model from https://github.com/alphacep/kaldi-android-demo/releases and unpack as 'model' in the current folder.")
-    process.exit(1)
-}
-
-try {
-    fs.accessSync('model-spk', fs.constants.R_OK)
-} catch (err) {
-    console.error("Please download the speaker model from https://github.com/alphacep/kaldi-android-demo/releases and unpack as 'model-spk' in the current folder.")
-    process.exit(1)
-}
-
-const wfStream = fs.createReadStream('test.wav', { highWaterMark: 4096 })
-const wfReader = new wav.Reader()
-
-const model = new Model('model')
-const spkModel = new SpkModel('model-spk')
-
-const spk_sig = [-0.56648, 0.030579, 1.730239, 0.239899, -1.194183,
-0.251954, 0.540388, -0.971872, -0.020963, 0.085036, 0.563973, -0.019682,
-0.597381, 1.094719, -0.566738, 0.29819, 0.171165, 0.370341, -0.033539,
-0.09757, 1.228286, 0.485949, 0.427826, 0.147762, -0.015112, 0.599513,
-2.040655, -0.490882, 0.440161, -0.072991, 0.835955, -0.496124, 0.952978,
-0.85356, -1.096116, 0.107764, -0.385486, 1.410305, 0.609147, -0.457014,
-1.542864, 0.343669, 0.171913, -0.627281, -1.281781, -1.134276,
-0.639895, 1.190183, -0.700537, 1.063457, 0.206946, 0.342198, -1.165625,
-1.475955, -0.089007, -2.555155, 0.551438, -0.212736, 1.025625, -1.631965,
-0.716256, -1.295995, 1.554956, -1.866009, -1.010782, -1.43231, 0.109027,
-2.123925, 1.703283, -0.784997, 2.730568, 0.755113, 0.0617, 0.128955,
-0.054047, 1.359119, -0.611666, -1.105754, -0.631353, 0.052109, 0.729386,
-0.769876, 1.250235, -1.463298, 0.648176, -0.73239, -0.385239,
-1.661856, 0.602106, -0.45567, -1.438431, -0.836673, 0.033557, 0.373597,
-1.343341, -0.181095, 0.237287, -0.522005, -1.722836, 0.932333,
-0.092861, -0.219254, 0.476182, 1.033803, -1.633563, -0.874341, 1.039064,
-1.758573, -0.838422, -0.324336, -0.924634, 1.962594, 2.152814, 1.2521,
-0.46172, -1.50271, 1.685691, 0.403097, -0.819042, 0.866403, -0.591716,
-0.578645, -0.553839, 0.381861, -1.051647, -1.477578, 0.524005, 0.925245]
-
-function dotp(x, y) {
-    function dotp_sum(a, b) {
-        return a + b
-    }
-    function dotp_times(a, i) {
-        return x[i] * y[i]
-    }
-    return x.map(dotp_times).reduce(dotp_sum, 0)
-}
-
-function cosineSimilarity(A, B) {
-    var similarity =
-        dotp(A, B) / (Math.sqrt(dotp(A, A)) * Math.sqrt(dotp(B, B)))
-        return similarity
-}
-
-function cosine_dist(x, y) {
-    return 1 - cosineSimilarity(x, y)
-}
-
-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 KaldiRecognizer(model, spkModel, sampleRate)
-    for await (const data of new Readable().wrap(wfReader)) {
-        const endOfSpeech = await rec.AcceptWaveform(data)
-        if (endOfSpeech) {
-            res = await JSON.parse(rec.Result());
-            console.log(res)
-            console.log('X-vector:', JSON.stringify(res['spk']))
-            console.log('Speaker distance:', cosine_dist(spk_sig, res['spk']))
-        } else {
-            console.log(await rec.PartialResult())
-        }
-    }
-    res = await JSON.parse(rec.FinalResult());
-    console.log(res)
-    console.log('X-vector:', JSON.stringify(res['spk']))
-    console.log('Speaker distance:', cosine_dist(spk_sig, res['spk']))
-})
-
-wfStream.pipe(wfReader)
@@ -1,38 +0,0 @@
-#!/usr/bin/env node
-
-const fs = require("fs");
-const { Readable } = require("stream");
-const wav = require("wav");
-
-const { Model, KaldiRecognizer } = require("..");
-
-try {
-    fs.accessSync("model", fs.constants.R_OK);
-} catch(err) {
-    console.error("Please download the model from https://github.com/alphacep/kaldi-android-demo/releases and unpack as 'model' in the current folder.");
-    process.exit(1);
-}
-
-const wfStream = fs.createReadStream("test.wav", {'highWaterMark': 4096});
-const wfReader = new wav.Reader();
-
-const model = new Model("model");
-
-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 KaldiRecognizer(model, sampleRate);
-    for await (const data of new Readable().wrap(wfReader)) {
-        const result = await rec.AcceptWaveform(data);
-        if (result != 0) {
-           console.log(await rec.Result());
-        } else {
-           console.log(await rec.PartialResult());
-        }
-    }
-    console.log(await rec.FinalResult());
-});
-
-wfStream.pipe(wfReader);
@@ -1,3 +1,77 @@
-const voskNativeModule = require('./build/Release/vosk.node');
+'use strict'

-module.exports = voskNativeModule;
+const os = require('os');
+const path = require('path');
+const ffi = require('ffi-napi');
+const ref = require('ref-napi');
+
+const vosk_model = ref.types.void;
+const vosk_model_ptr = ref.refType(vosk_model);
+const vosk_spk_model = ref.types.void;
+const vosk_spk_model_ptr = ref.refType(vosk_spk_model);
+const vosk_recognizer = ref.types.void;
+const vosk_recognizer_ptr = ref.refType(vosk_recognizer);
+
+var soname;
+if (os.platform == 'win32') {
+    soname = path.join(__dirname, "lib", "win-x86_64", "libvosk.dll")
+} else {
+    soname = path.join(__dirname, "lib", "linux-x86_64", "libvosk.so")
+}
+
+const libvosk = ffi.Library(soname, {
+  'vosk_set_log_level': [ 'void', [ 'int' ] ],
+  'vosk_model_new': [ vosk_model_ptr, [ 'string' ] ],
+  'vosk_model_free': [ 'void', [ vosk_model_ptr ] ],
+  'vosk_recognizer_new': [ vosk_recognizer_ptr, [ vosk_model_ptr, 'float' ] ],
+  'vosk_recognizer_free': [ 'void', [ vosk_recognizer_ptr ] ],
+  'vosk_recognizer_accept_waveform': [ 'bool', [ vosk_recognizer_ptr, 'pointer', 'int' ] ],
+  'vosk_recognizer_result': ['string', [vosk_recognizer_ptr ] ],
+  'vosk_recognizer_final_result': ['string', [vosk_recognizer_ptr ] ],
+});
+
+function setLogLevel(level) {
+    libvosk.vosk_set_log_level(level);
+}
+
+function Model(model_path) {
+
+    this.handle = libvosk.vosk_model_new(model_path);
+
+    this.free = function() {
+        libvosk.vosk_model_free(this.handle);
+    }
+
+    this.getHandle = function() {
+        return this.handle;
+    }
+}
+
+
+function Recognizer(model, sample_rate) {
+    this.handle = libvosk.vosk_recognizer_new(model.getHandle(), sample_rate);
+
+    this.free = function() {
+        libvosk.vosk_recognizer_free(this.handle);
+    }
+
+    this.acceptWaveform = function(data) {
+       return libvosk.vosk_recognizer_accept_waveform(this.handle, data, data.length);
+    }
+
+    this.result = function() {
+        return libvosk.vosk_recognizer_result(this.handle);
+    }
+
+    this.partialResult = function() {
+        return libvosk.vosk_recognizer_partial_result(this.handle);
+    }
+
+    this.finalResult = function() {
+        return libvosk.vosk_recognizer_final_result(this.handle);
+    }
+}
+
+exports.setLogLevel = setLogLevel
+exports.Model = Model
+exports.Recognizer = Recognizer
@@ -1,6 +1,6 @@
 {
  "name": "vosk",
-  "version": "0.3.15",
+  "version": "0.3.21",
  "description": "Node binding for continuous offline voice recoginition with Vosk library.",
  "repository": {
    "type": "git",
@@ -15,10 +15,11 @@
  "author": "Alpha Cephei Inc.",
  "license": "Apache-2.0",
  "engines": {
-    "node": ">= 10.x.x"
+    "node": ">= 12.x.x"
  },
  "dependencies": {
-    "node-gyp": "^5.1.1",
+    "ffi-napi": "^3.1.0",
+    "ref-napi": "^3.0.0",
    "wav": "^1.0.2"
  }
 }
@@ -1,9 +1,9 @@
 This is a Python module for Vosk.

 Vosk is an offline open source speech recognition toolkit. It enables
-speech recognition models for 16 languages and dialects - English, Indian
+speech recognition models for 17 languages and dialects - English, Indian
 English, German, French, Spanish, Portuguese, Chinese, Russian, Turkish,
-Vietnamese, Italian, Dutch, Catalan, Arabic, Greek, Farsi.
+Vietnamese, Italian, Dutch, Catalan, Arabic, Greek, Farsi, Filipino.

 Vosk models are small (50 Mb) but provide continuous large vocabulary
 transcription, zero-latency response with streaming API, reconfigurable
@@ -1,28 +1,90 @@
 #!/usr/bin/env python3

-from vosk import Model, KaldiRecognizer
+import argparse
 import os
+import queue
+import sounddevice as sd
+import vosk
+import sys

-if not os.path.exists("model"):
-    print ("Please download the model from https://alphacephei.com/vosk/models and unpack as 'model' in the current folder.")
-    exit (1)
+q = queue.Queue()

-import pyaudio
+def int_or_str(text):
+    """Helper function for argument parsing."""
+    try:
+        return int(text)
+    except ValueError:
+        return text

-model = Model("model")
-rec = KaldiRecognizer(model, 16000)
+def callback(indata, frames, time, status):
+    """This is called (from a separate thread) for each audio block."""
+    if status:
+        print(status, file=sys.stderr)
+    q.put(indata)

-p = pyaudio.PyAudio()
-stream = p.open(format=pyaudio.paInt16, channels=1, rate=16000, input=True, frames_per_buffer=8000)
-stream.start_stream()
+parser = argparse.ArgumentParser(add_help=False)
+parser.add_argument(
+    '-l', '--list-devices', action='store_true',
+    help='show list of audio devices and exit')
+args, remaining = parser.parse_known_args()
+if args.list_devices:
+    print(sd.query_devices())
+    parser.exit(0)
+parser = argparse.ArgumentParser(
+    description=__doc__,
+    formatter_class=argparse.RawDescriptionHelpFormatter,
+    parents=[parser])
+parser.add_argument(
+    '-f', '--filename', type=str, metavar='FILENAME',
+    help='audio file to store recording to')
+parser.add_argument(
+    '-m', '--model', type=str, metavar='MODEL_PATH',
+    help='Path to the model')
+parser.add_argument(
+    '-d', '--device', type=int_or_str,
+    help='input device (numeric ID or substring)')
+parser.add_argument(
+    '-r', '--samplerate', type=int, help='sampling rate')
+args = parser.parse_args(remaining)

-while True:
-    data = stream.read(4000)
-    if len(data) == 0:
-        break
-    if rec.AcceptWaveform(data):
-        print(rec.Result())
+try:
+    if args.model is None:
+        args.model = "model"
+    if not os.path.exists(args.model):
+        print ("Please download a model for your language from https://alphacephei.com/vosk/models")
+        print ("and unpack as 'model' in the current folder.")
+        parser.exit(0)
+    if args.samplerate is None:
+        device_info = sd.query_devices(args.device, 'input')
+        # soundfile expects an int, sounddevice provides a float:
+        args.samplerate = int(device_info['default_samplerate'])
+
+    model = vosk.Model(args.model)
+
+    if args.filename:
+        dump_fn = open(args.filename, "wb")
    else:
-        print(rec.PartialResult())
+        dump_fn = None

-print(rec.FinalResult())
+    with sd.RawInputStream(samplerate=args.samplerate, blocksize = 8000, device=args.device, dtype='int16',
+                            channels=1, callback=callback):
+            print('#' * 80)
+            print('Press Ctrl+C to stop the recording')
+            print('#' * 80)
+
+            rec = vosk.KaldiRecognizer(model, args.samplerate)
+            while True:
+                data = q.get()
+                data = bytes(data)
+                if rec.AcceptWaveform(data):
+                    print(rec.Result())
+                else:
+                    print(rec.PartialResult())
+                if dump_fn is not None:
+                    dump_fn.write(data)
+
+except KeyboardInterrupt:
+    print('\nDone')
+    parser.exit(0)
+except Exception as e:
+    parser.exit(type(e).__name__ + ': ' + str(e))
@@ -44,13 +44,15 @@ while True:
    if rec.AcceptWaveform(data):
        res = json.loads(rec.Result())
        print ("Text:", res['text'])
-        print ("X-vector:", res['spk'])
-        print ("Speaker distance:", cosine_dist(spk_sig, res['spk']), "based on", res['spk_frames'], "frames")
+        if 'spk' in res:
+            print ("X-vector:", res['spk'])
+            print ("Speaker distance:", cosine_dist(spk_sig, res['spk']), "based on", res['spk_frames'], "frames")

 print ("Note that second distance is not very reliable because utterance is too short. Utterances longer than 4 seconds give better xvector")

 res = json.loads(rec.FinalResult())
 print ("Text:", res['text'])
-print ("X-vector:", res['spk'])
-print ("Speaker distance:", cosine_dist(spk_sig, res['spk']), "based on", res['spk_frames'], "frames")
+if 'spk' in res:
+   print ("X-vector:", res['spk'])
+   print ("Speaker distance:", cosine_dist(spk_sig, res['spk']), "based on", res['spk_frames'], "frames")

@@ -25,6 +25,8 @@ process = subprocess.Popen(['ffmpeg', '-loglevel', 'quiet', '-i',
                            stdout=subprocess.PIPE)


+WORDS_PER_LINE = 7
+
 def transcribe():
    results = []
    subs = []
@@ -38,12 +40,16 @@ def transcribe():

    for i, res in enumerate(results):
       jres = json.loads(res)
-       s = srt.Subtitle(index=i, 
-                   content=jres['text'], 
-                   start=datetime.timedelta(seconds=jres['result'][0]['start']), 
-                   end=datetime.timedelta(seconds=jres['result'][-1]['end']))
-       subs.append(s)
+       if not 'result' in jres:
+           continue
+       words = jres['result']
+       for j in range(0, len(words), WORDS_PER_LINE):
+           line = words[j : j + WORDS_PER_LINE] 
+           s = srt.Subtitle(index=len(subs), 
+                   content=" ".join([l['word'] for l in line]),
+                   start=datetime.timedelta(seconds=line[0]['start']), 
+                   end=datetime.timedelta(seconds=line[-1]['end']))
+           subs.append(s)
    return subs

 print (srt.compose(transcribe()))
-
@@ -1,79 +1,50 @@
 import os
 import sys
 import setuptools
-from setuptools import Extension
-from setuptools.command.build_py import build_py as _build_py
-import distutils.dir_util
-import distutils.log
+import shutil
+import glob
+import platform

-class build_py(_build_py):
-    def run(self):
-        self.run_command("build_ext")
-        return super().run()
+# 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_PLATFORM', platform.system())
+architecture = os.environ.get('VOSK_ARCHITECTURE', platform.architecture()[0])

-kaldi_root = os.getenv('KALDI_ROOT')
-kaldi_mkl = os.getenv('KALDI_MKL')
-source_path = os.getenv("VOSK_SOURCE", os.path.abspath(os.path.join(os.path.abspath(os.path.dirname(__file__)), "../src")))
+# Copy precompmilled libraries
+for lib in glob.glob(os.path.join(vosk_source, "src/lib*.*")):
+    print ("Adding library", lib)
+    shutil.copy(lib, "vosk")

-if kaldi_root == None:
-    print("Define KALDI_ROOT")
-    exit(1)
-
-distutils.log.set_verbosity(distutils.log.DEBUG)
-distutils.dir_util.copy_tree(
-    source_path,
-    "vosk",
-    update=1,
-    verbose=1)
+# Create OS-dependent, but Python-independent wheels.
+try:
+    from wheel.bdist_wheel import bdist_wheel
+except ImportError:
+    cmdclass = {}
+else:
+    class bdist_wheel_tag_name(bdist_wheel):
+        def get_tag(self):
+            abi = 'none'
+            if system == 'Darwin':
+                oses = 'macosx_10_6_x86_64'
+            elif system == 'Windows' and architecture == '32bit':
+                oses = 'win32'
+            elif system == 'Windows' and architecture == '64bit':
+                oses = 'win_amd64'
+            elif system == 'Linux' and architecture == '64bit':
+                oses = 'linux_x86_64'
+            elif system == 'Linux':
+                oses = 'linux_' + architecture
+            else:
+                raise TypeError("Unknown build environment")
+            return 'py3', abi, oses
+    cmdclass = {'bdist_wheel': bdist_wheel_tag_name}

 with open("README.md", "r") as fh:
    long_description = fh.read()

-kaldi_static_libs = ['src/online2/kaldi-online2.a',
-             'src/decoder/kaldi-decoder.a',
-             'src/ivector/kaldi-ivector.a',
-             'src/gmm/kaldi-gmm.a',
-             'src/nnet3/kaldi-nnet3.a',
-             'src/tree/kaldi-tree.a',
-             'src/feat/kaldi-feat.a',
-             'src/lat/kaldi-lat.a',
-             'src/lm/kaldi-lm.a',
-             'src/hmm/kaldi-hmm.a',
-             'src/transform/kaldi-transform.a',
-             'src/cudamatrix/kaldi-cudamatrix.a',
-             'src/matrix/kaldi-matrix.a',
-             'src/fstext/kaldi-fstext.a',
-             'src/util/kaldi-util.a',
-             'src/base/kaldi-base.a',
-             'tools/openfst/lib/libfst.a',
-             'tools/openfst/lib/libfstngram.a']
-kaldi_link_args = ['-s']
-kaldi_libraries = []
-
-if sys.platform.startswith('darwin'):
-    kaldi_link_args.extend(['-Wl,-undefined,dynamic_lookup', '-framework', 'Accelerate'])
-elif kaldi_mkl == "1":
-    kaldi_link_args.extend(['-L/opt/intel/mkl/lib/intel64', '-Wl,-rpath=/opt/intel/mkl/lib/intel64'])
-    kaldi_libraries.extend(['mkl_rt', 'mkl_intel_lp64', 'mkl_core', 'mkl_sequential'])
-else:
-    kaldi_static_libs.append('tools/OpenBLAS/libopenblas.a')
-    kaldi_libraries.append('gfortran')
-
-sources = ['kaldi_recognizer.cc', 'model.cc', 'spk_model.cc', 'vosk_api.cc', 'language_model.cc', 'vosk.i']
-
-vosk_ext = Extension('vosk._vosk',
-                    define_macros = [('FST_NO_DYNAMIC_LINKING', '1')],
-                    include_dirs = [kaldi_root + '/src', kaldi_root + '/tools/openfst/include', 'vosk'],
-                    swig_opts=['-outdir', 'vosk', '-c++'],
-                    libraries = kaldi_libraries,
-                    extra_objects = [kaldi_root + '/' + x for x in kaldi_static_libs],
-                    sources = ['vosk/' + x for x in sources],
-                    extra_link_args = kaldi_link_args,
-                    extra_compile_args = ['-std=c++11', '-Wno-sign-compare', '-Wno-unused-variable', '-Wno-unused-local-typedefs'])
-
 setuptools.setup(
    name="vosk",
-    version="0.3.15",
+    version="0.3.21",
    author="Alpha Cephei Inc",
    author_email="contact@alphacephei.com",
    description="Offline open source speech recognition API based on Kaldi and Vosk",
@@ -81,8 +52,8 @@ setuptools.setup(
    long_description_content_type="text/markdown",
    url="https://github.com/alphacep/vosk-api",
    packages=setuptools.find_packages(),
-    ext_modules=[vosk_ext],
-    cmdclass = {'build_py' : build_py},
+    package_data = {'vosk': ['*.so', '*.dll', '*.dyld']},
+    include_package_data=True,
    classifiers=[
        'Programming Language :: Python :: 3',
        'License :: OSI Approved :: Apache Software License',
@@ -91,5 +62,10 @@ setuptools.setup(
        'Operating System :: MacOS :: MacOS X',
        'Topic :: Software Development :: Libraries :: Python Modules'
    ],
-    python_requires='>=3.5',
+    cmdclass=cmdclass,
+    python_requires='>=3',
+    zip_safe=False, # Since we load so file from the filesystem, we can not run from zip file
+    setup_requires=['cffi>=1.0'],
+    install_requires=['cffi>=1.0'],
+    cffi_modules=['vosk_builder.py:ffibuilder'],
 )
@@ -1,2 +1,71 @@
-from .vosk import KaldiRecognizer, Model, SpkModel, SetLogLevel
+import os
+import sys

+from .vosk_cffi import ffi as _ffi
+
+def open_dll():
+    dlldir = os.path.abspath(os.path.dirname(__file__))
+    if sys.platform == 'win32':
+        # We want to load dependencies too
+        os.environ["PATH"] = dlldir + os.pathsep + os.environ['PATH']
+        if hasattr(os, 'add_dll_directory'):
+            os.add_dll_directory(dlldir)
+        return _ffi.dlopen("libvosk.dll")
+    elif sys.platform == 'linux':
+        return _ffi.dlopen(os.path.join(dlldir, "libvosk.so"))
+    elif sys.platform == 'darwin':
+        return _ffi.dlopen(os.path.join(dlldir, "libvosk.dyld"))
+    else:
+        raise TypeError("Unsupported platform")
+
+_c = open_dll()
+
+class Model(object):
+
+    def __init__(self, model_path):
+        self._handle = _c.vosk_model_new(model_path.encode('utf-8'))
+
+    def __del__(self):
+        _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'))
+
+class SpkModel(object):
+
+    def __init__(self, model_path):
+        self._handle = _c.vosk_spk_model_new(model_path.encode('utf-8'))
+
+    def __del__(self):
+        _c.vosk_spk_model_free(self._handle)
+
+class KaldiRecognizer(object):
+
+    def __init__(self, *args):
+        if len(args) == 2:
+            self._handle = _c.vosk_recognizer_new(args[0]._handle, args[1])
+        elif len(args) == 3 and type(args[1]) is SpkModel:
+            self._handle = _c.vosk_recognizer_new_spk(args[0]._handle, args[1]._handle, args[2])
+        elif len(args) == 3 and type(args[2]) is str:
+            self._handle = _c.vosk_recognizer_new_grm(args[0]._handle, args[1], args[2].encode('utf-8'))
+        else:
+            raise TypeError("Unknown arguments")
+
+    def __del__(self):
+        _c.vosk_recognizer_free(self._handle)
+
+    def AcceptWaveform(self, data):
+        return _c.vosk_recognizer_accept_waveform(self._handle, data, len(data))
+
+    def Result(self):
+        return _ffi.string(_c.vosk_recognizer_result(self._handle)).decode('utf-8')
+
+    def PartialResult(self):
+        return _ffi.string(_c.vosk_recognizer_partial_result(self._handle)).decode('utf-8')
+
+    def FinalResult(self):
+        return _ffi.string(_c.vosk_recognizer_final_result(self._handle)).decode('utf-8')
+
+
+def SetLogLevel(level):
+    return _c.vosk_set_log_level(level)
@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+
+import os
+from cffi import FFI
+
+vosk_root=os.environ.get("VOSK_SOURCE", "..")
+cpp_command = "cpp " + vosk_root + "/src/vosk_api.h"
+
+ffibuilder = FFI()
+ffibuilder.set_source("vosk.vosk_cffi", None)
+ffibuilder.cdef(os.popen(cpp_command).read())
+
+if __name__ == '__main__':
+    ffibuilder.compile(verbose=True)
@@ -0,0 +1,47 @@
+KALDI_ROOT?=$(HOME)/travis/kaldi
+OPENFST_ROOT?=$(KALDI_ROOT)/tools/openfst
+OPENBLAS_ROOT?=$(KALDI_ROOT)/tools/OpenBLAS/install
+EXT?=so
+CXX?=g++
+VOSK_SOURCES= \
+    kaldi_recognizer.cc \
+    language_model.cc \
+    model.cc \
+    spk_model.cc \
+    vosk_api.cc
+
+CFLAGS=-g -O2 -std=c++17 -fPIC -DFST_NO_DYNAMIC_LINKING -I. -I$(KALDI_ROOT)/src -I$(OPENFST_ROOT)/include -I$(OPENBLAS_ROOT)/include
+LIBS= \
+	$(KALDI_ROOT)/src/online2/kaldi-online2.a \
+	$(KALDI_ROOT)/src/decoder/kaldi-decoder.a \
+	$(KALDI_ROOT)/src/ivector/kaldi-ivector.a \
+	$(KALDI_ROOT)/src/gmm/kaldi-gmm.a \
+	$(KALDI_ROOT)/src/nnet3/kaldi-nnet3.a \
+	$(KALDI_ROOT)/src/tree/kaldi-tree.a \
+	$(KALDI_ROOT)/src/feat/kaldi-feat.a \
+	$(KALDI_ROOT)/src/lat/kaldi-lat.a \
+	$(KALDI_ROOT)/src/lm/kaldi-lm.a \
+	$(KALDI_ROOT)/src/hmm/kaldi-hmm.a \
+	$(KALDI_ROOT)/src/transform/kaldi-transform.a \
+	$(KALDI_ROOT)/src/cudamatrix/kaldi-cudamatrix.a \
+	$(KALDI_ROOT)/src/matrix/kaldi-matrix.a \
+	$(KALDI_ROOT)/src/fstext/kaldi-fstext.a \
+	$(KALDI_ROOT)/src/util/kaldi-util.a \
+	$(KALDI_ROOT)/src/base/kaldi-base.a \
+	$(OPENBLAS_ROOT)/lib/libopenblas.a \
+	$(OPENBLAS_ROOT)/lib/liblapack.a \
+	$(OPENBLAS_ROOT)/lib/libblas.a \
+	$(OPENBLAS_ROOT)/lib/libf2c.a \
+	$(OPENFST_ROOT)/lib/libfst.a \
+	$(OPENFST_ROOT)/lib/libfstngram.a
+
+all: libvosk.$(EXT)
+
+libvosk.$(EXT): $(VOSK_SOURCES:.cc=.o)
+	$(CXX) --shared -s -o $@ $^ $(LIBS) -lm -latomic
+
+%.o: %.cc
+	$(CXX) $(CFLAGS) -c -o $@ $<
+
+clean:
+	rm -f *.o *.so *.dll
@@ -44,7 +44,7 @@ namespace {
                case '\t': output += "\\t";  break;
                default  : output += str[i]; break;
            }
-        return std::move( output );
+        return output;
    }
 }

@@ -291,10 +291,10 @@ class JSON
        /// Functions for getting primitives from the JSON object.
        bool IsNull() const { return Type == Class::Null; }

-        string ToString() const { bool b; return std::move( ToString( b ) ); }
+        string ToString() const { bool b; return ToString(b); }
        string ToString( bool &ok ) const {
            ok = (Type == Class::String);
-            return ok ? std::move( json_escape( *Internal.String ) ): string("");
+            return ok ? json_escape( *Internal.String ) : string("");
        }

        double ToFloat() const { bool b; return ToFloat( b ); }
@@ -425,18 +425,18 @@ class JSON
 };

 JSON Array() {
-    return std::move( JSON::Make( JSON::Class::Array ) );
+    return JSON::Make( JSON::Class::Array );
 }

 template <typename... T>
 JSON Array( T... args ) {
    JSON arr = JSON::Make( JSON::Class::Array );
    arr.append( args... );
-    return std::move( arr );
+    return arr;
 }

 JSON Object() {
-    return std::move( JSON::Make( JSON::Class::Object ) );
+    return JSON::Make( JSON::Class::Object );
 }

 std::ostream& operator<<( std::ostream &os, const JSON &json ) {
@@ -457,7 +457,7 @@ namespace {
        ++offset;
        consume_ws( str, offset );
        if( str[offset] == '}' ) {
-            ++offset; return std::move( Object );
+            ++offset; return Object;
        }

        while( true ) {
@@ -484,7 +484,7 @@ namespace {
            }
        }

-        return std::move( Object );
+        return Object;
    }

    JSON parse_array( const string &str, size_t &offset ) {
@@ -494,7 +494,7 @@ namespace {
        ++offset;
        consume_ws( str, offset );
        if( str[offset] == ']' ) {
-            ++offset; return std::move( Array );
+            ++offset; return Array;
        }

        while( true ) {
@@ -509,11 +509,11 @@ namespace {
            }
            else {
                std::cerr << "ERROR: Array: Expected ',' or ']', found '" << str[offset] << "'\n";
-                return std::move( JSON::Make( JSON::Class::Array ) );
+                return JSON::Make( JSON::Class::Array );
            }
        }

-        return std::move( Array );
+        return Array;
    }

    JSON parse_string( const string &str, size_t &offset ) {
@@ -538,7 +538,7 @@ namespace {
                            val += c;
                        else {
                            std::cerr << "ERROR: String: Expected hex character in unicode escape, found '" << c << "'\n";
-                            return std::move( JSON::Make( JSON::Class::String ) );
+                            return JSON::Make( JSON::Class::String );
                        }
                    }
                    offset += 4;
@@ -551,7 +551,7 @@ namespace {
        }
        ++offset;
        String = val;
-        return std::move( String );
+        return String;
    }

    JSON parse_number( const string &str, size_t &offset ) {
@@ -580,7 +580,7 @@ namespace {
                    exp_str += c;
                else if( !isspace( c ) && c != ',' && c != ']' && c != '}' ) {
                    std::cerr << "ERROR: Number: Expected a number for exponent, found '" << c << "'\n";
-                    return std::move( JSON::Make( JSON::Class::Null ) );
+                    return JSON::Make( JSON::Class::Null );
                }
                else
                    break;
@@ -589,7 +589,7 @@ namespace {
        }
        else if( !isspace( c ) && c != ',' && c != ']' && c != '}' ) {
            std::cerr << "ERROR: Number: unexpected character '" << c << "'\n";
-            return std::move( JSON::Make( JSON::Class::Null ) );
+            return JSON::Make( JSON::Class::Null );
        }
        --offset;
        
@@ -601,7 +601,7 @@ namespace {
            else
                Number = std::stol( val );
        }
-        return std::move( Number );
+        return Number;
    }

    JSON parse_bool( const string &str, size_t &offset ) {
@@ -612,20 +612,20 @@ namespace {
            Bool = false;
        else {
            std::cerr << "ERROR: Bool: Expected 'true' or 'false', found '" << str.substr( offset, 5 ) << "'\n";
-            return std::move( JSON::Make( JSON::Class::Null ) );
+            return JSON::Make( JSON::Class::Null );
        }
        offset += (Bool.ToBool() ? 4 : 5);
-        return std::move( Bool );
+        return Bool;
    }

    JSON parse_null( const string &str, size_t &offset ) {
        JSON Null;
        if( str.substr( offset, 4 ) != "null" ) {
            std::cerr << "ERROR: Null: Expected 'null', found '" << str.substr( offset, 4 ) << "'\n";
-            return std::move( JSON::Make( JSON::Class::Null ) );
+            return JSON::Make( JSON::Class::Null );
        }
        offset += 4;
-        return std::move( Null );
+        return Null;
    }

    JSON parse_next( const string &str, size_t &offset ) {
@@ -633,14 +633,14 @@ namespace {
        consume_ws( str, offset );
        value = str[offset];
        switch( value ) {
-            case '[' : return std::move( parse_array( str, offset ) );
-            case '{' : return std::move( parse_object( str, offset ) );
-            case '\"': return std::move( parse_string( str, offset ) );
+            case '[' : return parse_array( str, offset );
+            case '{' : return parse_object( str, offset );
+            case '\"': return parse_string( str, offset );
            case 't' :
-            case 'f' : return std::move( parse_bool( str, offset ) );
-            case 'n' : return std::move( parse_null( str, offset ) );
+            case 'f' : return parse_bool( str, offset );
+            case 'n' : return parse_null( str, offset );
            default  : if( ( value <= '9' && value >= '0' ) || value == '-' )
-                           return std::move( parse_number( str, offset ) );
+                           return parse_number( str, offset );
        }
        std::cerr << "ERROR: Parse: Unknown starting character '" << value << "'\n";
        return JSON();
@@ -649,7 +649,7 @@ namespace {

 JSON JSON::Load( const string &str ) {
    size_t offset = 0;
-    return std::move( parse_next( str, offset ) );
+    return parse_next( str, offset );
 }

 } // End Namespace json
@@ -173,9 +173,9 @@ void KaldiRecognizer::InitRescoring()
 {
    if (model_->std_lm_fst_) {
        fst::CacheOptions cache_opts(true, 50000);
-        fst::MapFstOptions mapfst_opts(cache_opts);
+        fst::ArcMapFstOptions mapfst_opts(cache_opts);
        fst::StdToLatticeMapper<kaldi::BaseFloat> mapper;
-        lm_fst_ = new fst::MapFst<fst::StdArc, kaldi::LatticeArc, fst::StdToLatticeMapper<kaldi::BaseFloat> >(*model_->std_lm_fst_, mapper, mapfst_opts);
+        lm_fst_ = new fst::ArcMapFst<fst::StdArc, kaldi::LatticeArc, fst::StdToLatticeMapper<kaldi::BaseFloat> >(*model_->std_lm_fst_, mapper, mapfst_opts);
    } else {
        lm_fst_ = NULL;
    }
@@ -72,7 +72,7 @@ class KaldiRecognizer {
        SpkModel *spk_model_;
        OnlineBaseFeature *spk_feature_;

-        fst::MapFst<fst::StdArc, kaldi::LatticeArc, fst::StdToLatticeMapper<kaldi::BaseFloat> > *lm_fst_;
+        fst::ArcMapFst<fst::StdArc, kaldi::LatticeArc, fst::StdToLatticeMapper<kaldi::BaseFloat> > *lm_fst_;

        float sample_frequency_;
        int32 frame_offset_;
@@ -161,6 +161,7 @@ void Model::ConfigureV1()
    std_fst_rxfilename_ = model_path_str_ + "/rescore/G.fst";
    final_ie_rxfilename_ = model_path_str_ + "/ivector/final.ie";
    mfcc_conf_rxfilename_ = model_path_str_ + "/mfcc.conf";
+    global_cmvn_stats_rxfilename_ = model_path_str_ + "/global_cmvn.stats";
 }

 void Model::ConfigureV2()
@@ -183,6 +184,7 @@ void Model::ConfigureV2()
    std_fst_rxfilename_ = model_path_str_ + "/rescore/G.fst";
    final_ie_rxfilename_ = model_path_str_ + "/ivector/final.ie";
    mfcc_conf_rxfilename_ = model_path_str_ + "/conf/mfcc.conf";
+    global_cmvn_stats_rxfilename_ = model_path_str_ + "/am/global_cmvn.stats";
 }

 void Model::ReadDataFiles()
@@ -233,6 +235,13 @@ void Model::ReadDataFiles()
        feature_info_.use_ivectors = false;
    }

+    if (stat(global_cmvn_stats_rxfilename_.c_str(), &buffer) == 0) {
+        KALDI_LOG << "Reading CMVN stats from " << global_cmvn_stats_rxfilename_;
+        feature_info_.use_cmvn = true;
+        ReadKaldiObject(global_cmvn_stats_rxfilename_, &feature_info_.global_cmvn_stats);
+    }
+
+
    if (stat(hclg_fst_rxfilename_.c_str(), &buffer) == 0) {
        KALDI_LOG << "Loading HCLG from " << hclg_fst_rxfilename_;
        hclg_fst_ = fst::ReadFstKaldiGeneric(hclg_fst_rxfilename_);
@@ -295,6 +304,14 @@ void Model::Unref()
    }
 }

+int Model::FindWord(const char *word)
+{
+    if (!word_syms_)
+        return -1;
+
+    return word_syms_->Find(word);
+}
+
 Model::~Model() {
    delete decodable_info_;
    delete trans_model_;
@@ -42,6 +42,7 @@ public:
    Model(const char *model_path);
    void Ref();
    void Unref();
+    int FindWord(const char *word);

 protected:
    ~Model();
@@ -63,6 +64,7 @@ protected:
    string std_fst_rxfilename_;
    string final_ie_rxfilename_;
    string mfcc_conf_rxfilename_;
+    string global_cmvn_stats_rxfilename_;

    kaldi::OnlineEndpointConfig endpoint_config_;
    kaldi::LatticeFasterDecoderConfig nnet3_decoding_config_;
@@ -75,6 +75,9 @@ typedef struct {} KaldiRecognizer;
    ~Model() {
        vosk_model_free($self);
    }
+    int vosk_model_find_word(const char* word) {
+        return vosk_model_find_word($self, word);
+    }
 }

 %extend SpkModel {
@@ -31,6 +31,11 @@ void vosk_model_free(VoskModel *model)
    ((Model *)model)->Unref();
 }

+int vosk_model_find_word(VoskModel *model, const char *word)
+{
+    return (int) ((Model *)model)->FindWord(word);
+}
+
 VoskSpkModel *vosk_spk_model_new(const char *model_path)
 {
    return (VoskSpkModel *)new SpkModel(model_path);
@@ -55,6 +55,14 @@ VoskModel *vosk_model_new(const char *model_path);
 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
@@ -1,5 +1,5 @@
-ARG DOCKCROSS_IMAGE=linux-armv7
-FROM dockcross/${DOCKCROSS_IMAGE}
+ARG DOCKCROSS_IMAGE=alphacep/dockcross-linux-armv7
+FROM ${DOCKCROSS_IMAGE}

 LABEL description="A docker image for building portable Python linux binary wheels and Kaldi on other architectures"
 LABEL maintainer="contact@alphacephei.com"
@@ -13,92 +13,34 @@ RUN apt-get update && \
        automake \
        autoconf \
        libtool \
+        cmake \
+        python3 \
+        python3-pip \
+        python3-wheel \
+        python3-setuptools \
+        python3-cffi \
    && rm -rf /var/lib/apt/lists/*

-RUN cd /opt \
-    && wget -O swig-4.0.1.tar.gz https://sourceforge.net/projects/swig/files/swig/swig-4.0.1/swig-4.0.1.tar.gz/download \
-    && tar xf swig-4.0.1.tar.gz \
-    && cd swig-4.0.1 \
-    && CPP=/usr/bin/cpp CXX=/usr/bin/g++ CC=/usr/bin/gcc ./configure --prefix=/usr && make -j 10 && make install \
-    && cd .. \
-    && rm -rf swig-4.0.1.tar.gz swig-4.0.1
-
-RUN cd /opt \
-    && wget -q https://github.com/openssl/openssl/archive/OpenSSL_1_0_2u.tar.gz \
-    && tar xf OpenSSL_1_0_2u.tar.gz \
-    && cd openssl-OpenSSL_1_0_2u \
-    && CROSS_COMPILE= MACHINE="$(echo $CROSS_TRIPLE|cut -d - -f 1)" ./config --prefix=$CROSS_ROOT shared \
-    && make -j $(nproc) \
-    && make install \
-    && rm -rf /opt/openssl-OpenSSL_1_0_2u /opt/OpenSSL_1_0_2u.tar.gz
-
-RUN cd /opt \
-    && wget -q https://github.com/python/cpython/archive/v3.7.6.tar.gz \
-    && tar xf v3.7.6.tar.gz \
-    && cp -r cpython-3.7.6 cpython-3.7.6-cross \
-    && cd /opt/cpython-3.7.6 \
-    && AR=/usr/bin/ar RANLIB=/usr/bin/ranlib CPP=/usr/bin/cpp CXX=/usr/bin/g++ CC=/usr/bin/gcc  ./configure --prefix="/opt/python/cp3.7-cp3.7m" \
-    && make -j $(nproc) \
-    && make install \
-    && /opt/python/cp3.7-cp3.7m/bin/pip3 install -U pip \
-    && /opt/python/cp3.7-cp3.7m/bin/pip3 install -U wheel \
-    && cd /opt/cpython-3.7.6-cross \
-    && export PATH=/opt/python/cp3.7-cp3.7m/bin:$PATH \
-    && ./configure --prefix=$CROSS_ROOT --with-openssl=$CROSS_ROOT --host=${CROSS_TRIPLE} --build=x86-linux-gnu --disable-ipv6 ac_cv_file__dev_ptmx=no ac_cv_file__dev_ptc=no ac_cv_have_long_long_format=yes \
-    && make -j $(nproc) \
-    && make install \
-    && rm -rf /opt/cpython-3.7.6 /opt/cpython-3.7.6-cross /opt/v3.7.6.tar.gz
-
-RUN cd /opt \
-    && wget -q https://github.com/python/cpython/archive/v3.6.10.tar.gz \
-    && tar xf v3.6.10.tar.gz \
-    && cp -r cpython-3.6.10 cpython-3.6.10-cross \
-    && cd /opt/cpython-3.6.10 \
-    && AR=/usr/bin/ar RANLIB=/usr/bin/ranlib CPP=/usr/bin/cpp CXX=/usr/bin/g++ CC=/usr/bin/gcc  ./configure --prefix="/opt/python/cp3.6-cp3.6m" \
-    && make -j $(nproc) \
-    && make install \
-    && /opt/python/cp3.6-cp3.6m/bin/pip3 install -U pip \
-    && /opt/python/cp3.6-cp3.6m/bin/pip3 install -U wheel \
-    && cd /opt/cpython-3.6.10-cross \
-    && export PATH=/opt/python/cp3.6-cp3.6m/bin:$PATH \
-    && ./configure --prefix=$CROSS_ROOT --with-openssl=$CROSS_ROOT --host=${CROSS_TRIPLE} --build=x86-linux-gnu --disable-ipv6 ac_cv_file__dev_ptmx=no ac_cv_file__dev_ptc=no ac_cv_have_long_long_format=yes \
-    && make -j $(nproc) \
-    && make install \
-    && rm -rf /opt/cpython-3.6.10 /opt/cpython-3.6.10-cross /opt/v3.6.10.tar.gz
-
-RUN cd /opt \
-    && wget -q https://github.com/python/cpython/archive/v3.8.3.tar.gz \
-    && tar xf v3.8.3.tar.gz \
-    && cp -r cpython-3.8.3 cpython-3.8.3-cross \
-    && cd /opt/cpython-3.8.3 \
-    && AR=/usr/bin/ar RANLIB=/usr/bin/ranlib CPP=/usr/bin/cpp CXX=/usr/bin/g++ CC=/usr/bin/gcc  ./configure --prefix="/opt/python/cp3.8-cp3.8m" \
-    && make -j $(nproc) \
-    && make install \
-    && /opt/python/cp3.8-cp3.8m/bin/pip3 install -U pip \
-    && /opt/python/cp3.8-cp3.8m/bin/pip3 install -U wheel \
-    && cd /opt/cpython-3.8.3-cross \
-    && export PATH=/opt/python/cp3.8-cp3.8m/bin:$PATH \
-    && ./configure --prefix=$CROSS_ROOT --with-openssl=$CROSS_ROOT --host=${CROSS_TRIPLE} --build=x86-linux-gnu --disable-ipv6 ac_cv_file__dev_ptmx=no ac_cv_file__dev_ptc=no ac_cv_have_long_long_format=yes \
-    && make -j $(nproc) \
-    && make install \
-    && rm -rf /opt/cpython-3.8.3 /opt/cpython-3.8.3-cross /opt/v3.8.3.tar.gz
-
 ARG OPENBLAS_ARCH=ARMV7
 ARG ARM_HARDWARE_OPTS="-mfloat-abi=hard -mfpu=neon"
 RUN cd /opt \
-    && git clone -b lookahead --single-branch https://github.com/alphacep/kaldi \
+    && git clone -b lookahead-1.8.0 --single-branch https://github.com/alphacep/kaldi \
    && cd kaldi/tools \
-    && git clone -b v0.3.7 --single-branch https://github.com/xianyi/OpenBLAS \
-    && make PREFIX=$(pwd)/OpenBLAS/install TARGET="${OPENBLAS_ARCH}" HOSTCC=gcc USE_LOCKING=1 USE_THREAD=0 -C OpenBLAS all install \
-    && git clone -b old-gcc --single-branch https://github.com/alphacep/openfst openfst \
+    && git clone -b v0.3.13 --single-branch https://github.com/xianyi/OpenBLAS \
+    && git clone -b v3.2.1  --single-branch https://github.com/alphacep/clapack \
+    && make -C OpenBLAS ONLY_CBLAS=1 TARGET="${OPENBLAS_ARCH}" HOSTCC=gcc USE_LOCKING=1 USE_THREAD=0 all \
+    && make -C OpenBLAS PREFIX=$(pwd)/OpenBLAS/install install \
+    && mkdir -p clapack/BUILD && cd clapack/BUILD && cmake .. && make -j 10 && find . -name "*.a" | xargs cp -t ../../OpenBLAS/install/lib \
+    && cd /opt/kaldi/tools \
+    && git clone --single-branch https://github.com/alphacep/openfst openfst \
    && cd openfst \
    && autoreconf -i \
-    && ./configure --prefix=/opt/kaldi/tools/openfst --enable-static --enable-shared --enable-far --enable-ngram-fsts --enable-lookahead-fsts --with-pic --disable-bin --host=${CROSS_TRIPLE} --build=x86-linux-gnu \
+    && CFLAGS="-g -O3" ./configure --prefix=/opt/kaldi/tools/openfst --enable-static --enable-shared --enable-far --enable-ngram-fsts --enable-lookahead-fsts --with-pic --disable-bin --host=${CROSS_TRIPLE} --build=x86-linux-gnu \
    && make -j 10 && make install \
    && cd /opt/kaldi/src \
    && sed -i "s:TARGET_ARCH=\"\`uname -m\`\":TARGET_ARCH=$(echo $CROSS_TRIPLE|cut -d - -f 1):g" configure \
    && sed -i "s:-mfloat-abi=hard -mfpu=neon:${ARM_HARDWARE_OPTS}:g" makefiles/linux_openblas_arm.mk \
    && sed -i "s: -O1 : -O3 :g" makefiles/linux_openblas_arm.mk \
-    && ./configure --mathlib=OPENBLAS --shared --use-cuda=no \
+    && ./configure --mathlib=OPENBLAS_CLAPACK --shared --use-cuda=no \
    && make -j 10 online2 lm \
    && find /opt/kaldi -name "*.o" -exec rm {} \;
@@ -4,33 +4,30 @@ LABEL description="A docker image for building portable Python linux binary whee
 LABEL maintainer="contact@alphacephei.com"

 RUN yum -y update && yum -y install \
-    wget \
-    openssl-devel \
-    pcre-devel \
+    devtoolset-8-libatomic-devel \
    automake \
    autoconf \
    libtool \
+    cmake \
    && yum clean all

 RUN cd /opt \
-    && wget -O swig-4.0.1.tar.gz https://sourceforge.net/projects/swig/files/swig/swig-4.0.1/swig-4.0.1.tar.gz/download \
-    && tar xf swig-4.0.1.tar.gz \
-    && cd swig-4.0.1 \
-    && ./configure --prefix=/usr && make -j 10 && make install \
-    && cd .. \
-    && rm -rf swig-4.0.1.tar.gz swig-4.0.1
-
-RUN cd /opt \
-    && git clone -b lookahead --single-branch https://github.com/alphacep/kaldi \
-    && cd kaldi/tools \
-    && git clone -b v0.3.7 --single-branch https://github.com/xianyi/OpenBLAS \
-    && make PREFIX=$(pwd)/OpenBLAS/install DYNAMIC_ARCH=1 USE_LOCKING=1 USE_THREAD=0 -C OpenBLAS all install \
-    && git clone https://github.com/alphacep/openfst openfst \
+    && git clone -b lookahead-1.8.0 --single-branch https://github.com/alphacep/kaldi \
+    && cd /opt/kaldi/tools \
+    && git clone -b v0.3.13 --single-branch https://github.com/xianyi/OpenBLAS \
+    && git clone -b v3.2.1  --single-branch https://github.com/alphacep/clapack \
+    && make -C OpenBLAS ONLY_CBLAS=1 DYNAMIC_ARCH=1 TARGET=NEHALEM USE_LOCKING=1 USE_THREAD=0 all \
+    && make -C OpenBLAS PREFIX=$(pwd)/OpenBLAS/install install \
+    && mkdir -p clapack/BUILD && cd clapack/BUILD && cmake .. && make -j 10 && find . -name "*.a" | xargs cp -t ../../OpenBLAS/install/lib \
+    && cd /opt/kaldi/tools \
+    && git clone --single-branch https://github.com/alphacep/openfst openfst \
    && cd openfst \
    && autoreconf -i \
-    && ./configure --prefix=/opt/kaldi/tools/openfst --enable-static --enable-shared --enable-far --enable-ngram-fsts --enable-lookahead-fsts --with-pic --disable-bin \
+    && CFLAGS="-g -O3" ./configure --prefix=/opt/kaldi/tools/openfst --enable-static --enable-shared --enable-far --enable-ngram-fsts --enable-lookahead-fsts --with-pic --disable-bin \
    && make -j 10 && make install \
    && cd /opt/kaldi/src \
-    && ./configure --mathlib=OPENBLAS --shared --use-cuda=no \
-    && make -j 10 online2 lm rnnlm \
+    && ./configure --mathlib=OPENBLAS_CLAPACK --shared --use-cuda=no \
+    && sed -i 's:-msse -msse2:-msse -msse2:g' kaldi.mk \
+    && sed -i 's: -O1 : -O3 :g' kaldi.mk \
+    && make -j $(nproc) online2 lm rnnlm \
    && find /opt/kaldi -name "*.o" -exec rm {} \;
@@ -0,0 +1,65 @@
+FROM debian:10.4
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        ca-certificates \
+        g++ \
+        bzip2 \
+        unzip \
+        make \
+        wget \
+        git \
+        python3 \
+        python3-pip \
+        python3-wheel \
+        python3-setuptools \
+        python3-cffi \
+        zlib1g-dev \
+        patch \
+        cmake \
+        xz-utils \
+        automake \
+        autoconf \
+        libtool \
+        pkg-config \
+        sudo \
+        g++-mingw-w64-i686 \
+        g++-mingw-w64-x86-64 \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN mkdir /opt/kaldi \
+    && git clone https://github.com/alphacep/openfst \
+    && cd openfst \
+    && autoreconf -i \
+    && CXX=x86_64-w64-mingw32-g++-posix CXXFLAGS="-O3 -ftree-vectorize -DFST_NO_DYNAMIC_LINKING" \
+        ./configure --prefix=/opt/kaldi/local \
+        --enable-shared --enable-static --with-pic --disable-bin \
+        --enable-lookahead-fsts --enable-ngram-fsts --host=x86_64-w64-mingw32 \
+    && make -j $(nproc) \
+    && make install
+
+RUN cd /opt/kaldi \
+    && git clone -b v0.3.13 --single-branch https://github.com/xianyi/OpenBLAS \
+    && cd OpenBLAS \
+    && make HOSTCC=gcc BINARY=64 CC=x86_64-w64-mingw32-gcc ONLY_CBLAS=1 DYNAMIC_ARCH=1 TARGET=NEHALEM USE_LOCKING=1 USE_THREAD=0 -j $(nproc) \
+    && make PREFIX=/opt/kaldi/local install
+
+RUN cd /opt/kaldi \
+    && git clone -b v3.2.1  --single-branch https://github.com/alphacep/clapack \
+    && mkdir clapack/BUILD \
+    && cd clapack/BUILD \
+    && cmake -DCMAKE_C_COMPILER_TARGET=x86_64-w64-mingw32 -DCMAKE_C_COMPILER=x86_64-w64-mingw32-gcc-posix -DCMAKE_SYSTEM_NAME=Windows -DCMAKE_CROSSCOMPILING=True .. \
+    && make -C F2CLIBS/libf2c \
+    && make -C BLAS \
+    && make -C SRC \
+    && find . -name *.a -exec cp {} /opt/kaldi/local/lib \;
+
+RUN cd /opt/kaldi \
+    && git clone -b android-mix --single-branch https://github.com/alphacep/kaldi \
+    && cd kaldi/src \
+    && CXX=x86_64-w64-mingw32-g++-posix CXXFLAGS="-O3 -ftree-vectorize -DFST_NO_DYNAMIC_LINKING" ./configure --shared --mingw=yes --use-cuda=no \
+        --mathlib=OPENBLAS_CLAPACK \
+        --host=x86_64-w64-mingw32 --openblas-clapack-root=/opt/kaldi/local \
+        --fst-root=/opt/kaldi/local --fst-version=1.8.0 \
+    && make depend -j \
+    && make -j $(nproc) online2 lm
@@ -0,0 +1,64 @@
+FROM debian:10.4
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        ca-certificates \
+        g++ \
+        bzip2 \
+        unzip \
+        make \
+        wget \
+        git \
+        python3 \
+        python3-pip \
+        python3-wheel \
+        python3-setuptools \
+        python3-cffi \
+        zlib1g-dev \
+        patch \
+        cmake \
+        automake \
+        autoconf \
+        libtool \
+        pkg-config \
+        sudo \
+        g++-mingw-w64-i686 \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN mkdir /opt/kaldi \
+    && git clone https://github.com/alphacep/openfst \
+    && cd openfst \
+    && autoreconf -i \
+    && CXX=i686-w64-mingw32-g++-posix CXXFLAGS="-msse2 -O3 -ftree-vectorize -DFST_NO_DYNAMIC_LINKING" \
+        ./configure --prefix=/opt/kaldi/local \
+        --enable-shared --enable-static --with-pic \
+        --disable-bin --enable-lookahead-fsts --enable-ngram-fsts \
+        --host=i686-w64-mingw32 \
+    && make -j $(nproc) \
+    && make install
+
+RUN cd /opt/kaldi \
+    && git clone -b v0.3.13 --single-branch https://github.com/xianyi/OpenBLAS \
+    && cd OpenBLAS \
+    && make HOSTCC=gcc BINARY=32 CC=i686-w64-mingw32-gcc ONLY_CBLAS=1 DYNAMIC_ARCH=1 TARGET=NEHALEM USE_LOCKING=1 USE_THREAD=0 -j $(nproc) \
+    && make PREFIX=/opt/kaldi/local install
+
+RUN cd /opt/kaldi \
+    && git clone -b v3.2.1  --single-branch https://github.com/alphacep/clapack \
+    && mkdir clapack/BUILD \
+    && cd clapack/BUILD \
+    && cmake -DCMAKE_C_COMPILER_TARGET=i686-w64-mingw32 -DCMAKE_C_COMPILER=i686-w64-mingw32-gcc-posix -DCMAKE_SYSTEM_NAME=Windows -DCMAKE_CROSSCOMPILING=True .. \
+    && make -C F2CLIBS/libf2c \
+    && make -C BLAS \
+    && make -C SRC \
+    && find . -name *.a -exec cp {} /opt/kaldi/local/lib \;
+
+RUN cd /opt/kaldi \
+    && git clone -b android-mix --single-branch https://github.com/alphacep/kaldi \
+    && cd kaldi/src \
+    && CXX=i686-w64-mingw32-g++-posix CXXFLAGS="-O3 -ftree-vectorize -DFST_NO_DYNAMIC_LINKING" ./configure --shared --mingw=yes --use-cuda=no \
+        --mathlib=OPENBLAS_CLAPACK \
+        --host=i686-w64-mingw32 --openblas-clapack-root=/opt/kaldi/local \
+        --fst-root=/opt/kaldi/local --fst-version=1.8.0 \
+    && make depend -j \
+    && make -j $(nproc) online2 lm
@@ -3,10 +3,8 @@
 set -e
 set -x

-docker build --build-arg="DOCKCROSS_IMAGE=linux-armv7" --build-arg="OPENBLAS_ARCH=ARMV7" --file Dockerfile.dockcross --tag alphacep/kaldi-dockcross-armv7:latest .
-docker build --build-arg="DOCKCROSS_IMAGE=linux-armv6" --build-arg="OPENBLAS_ARCH=ARMV6" --build-arg="ARM_HARDWARE_OPTS=" --file Dockerfile.dockcross --tag alphacep/kaldi-dockcross-armv6:latest .
-docker build --build-arg="DOCKCROSS_IMAGE=linux-arm64" --build-arg="OPENBLAS_ARCH=ARMV8" --file Dockerfile.dockcross --tag alphacep/kaldi-dockcross-arm64:latest .
+docker build --build-arg="DOCKCROSS_IMAGE=alphacep/dockcross-linux-armv7" --build-arg="OPENBLAS_ARCH=ARMV7" --file Dockerfile.dockcross --tag alphacep/kaldi-dockcross-armv7:latest .
+docker build --build-arg="DOCKCROSS_IMAGE=dockcross/linux-arm64" --build-arg="OPENBLAS_ARCH=ARMV8" --file Dockerfile.dockcross --tag alphacep/kaldi-dockcross-arm64:latest .

-docker run --rm -v /home/shmyrev/travis/vosk-api/:/io alphacep/kaldi-dockcross-armv6 /io/travis/build-wheels-dockcross.sh
 docker run --rm -v /home/shmyrev/travis/vosk-api/:/io alphacep/kaldi-dockcross-armv7 /io/travis/build-wheels-dockcross.sh
 docker run --rm -v /home/shmyrev/travis/vosk-api/:/io alphacep/kaldi-dockcross-arm64 /io/travis/build-wheels-dockcross.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e -x 
+docker build --file Dockerfile.win --tag alphacep/kaldi-win:latest .
+docker run --rm -v `realpath ..`:/io alphacep/kaldi-win /io/travis/build-wheels-win.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -e -x 
+docker build --file Dockerfile.win32 --tag alphacep/kaldi-win32:latest .
+docker run --rm -v `realpath ..`:/io alphacep/kaldi-win32 /io/travis/build-wheels-win32.sh
@@ -1,7 +1,5 @@
 #!/bin/bash

-set -e
-set -x
-
+set -e -x 
 docker build --file Dockerfile.manylinux --tag alphacep/kaldi-manylinux:latest .
-docker run --rm -e PLAT=manylinux2010_x86_64 -v /home/shmyrev/travis/vosk-api/:/io alphacep/kaldi-manylinux /io/travis/build-wheels.sh
+docker run --rm -v `realpath ..`:/io alphacep/kaldi-manylinux /io/travis/build-wheels.sh
@@ -1,37 +1,26 @@
 #!/bin/bash
 set -e -x

-ORIG_PATH=$PATH
-for pyver in 3.6 3.7 3.8; do
+# Build so file
+cd /opt
+git clone https://github.com/alphacep/vosk-api
+cd /opt/vosk-api/src
+KALDI_ROOT=/opt/kaldi make -j $(nproc)

-    export KALDI_ROOT=/opt/kaldi
-    export PATH=/opt/python/cp${pyver}-cp${pyver}m/bin:$ORIG_PATH
-    export VOSK_SOURCE=/io/src
+# Decide architecture name
+export VOSK_SOURCE=/opt/vosk-api
+case $CROSS_TRIPLE in
+    *armv7-*)
+        export VOSK_ARCHITECTURE=armv7l
+        ;;
+    *aarch64-*)
+        export VOSK_ARCHITECTURE=aarch64
+        ;;
+esac

-    # Python 3.8 somehow changed syconfig file name
-    sysconfig_bit="m"
-    if [ $pyver == "3.8" ]; then
-         sysconfig_bit=""
-    fi
+# Copy library to output folder
+mkdir -p /io/wheelhouse/linux-$VOSK_ARCHITECTURE
+cp /opt/vosk-api/src/*.so /io/wheelhouse/linux-$VOSK_ARCHITECTURE

-    case $CROSS_TRIPLE in
-        *arm-*)
-            export _PYTHON_HOST_PLATFORM=linux-armv6l
-            export _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_${sysconfig_bit}_linux_arm-linux-gnueabihf
-            ;;
-        *armv7-*)
-            export _PYTHON_HOST_PLATFORM=linux-armv7l
-            export _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_${sysconfig_bit}_linux_arm-linux-gnueabihf
-            ;;
-        *aarch64-*)
-            export _PYTHON_HOST_PLATFORM=linux-aarch64
-            export _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_${sysconfig_bit}_linux_aarch64-linux-gnu
-            ;;
-    esac
-    export PYTHONHOME=$CROSS_ROOT
-    export PYTHONPATH=/opt/python/cp${pyver}-cp${pyver}m/lib/python${pyver}/site-packages:/opt/python/cp${pyver}-cp${pyver}m/lib/python${pyver}/lib-dynload
-
-    rm -rf /io/python/build
-    pip${pyver} -v wheel /io/python -w /io/wheelhouse
-
-done
+# Build wheel
+pip3 wheel /opt/vosk-api/python --no-deps -w /io/wheelhouse
@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e -x
+
+# Build libvosk
+cd /opt
+git clone https://github.com/alphacep/vosk-api
+cd vosk-api/src
+CXX=x86_64-w64-mingw32-g++-posix EXT=dll KALDI_ROOT=/opt/kaldi/kaldi OPENFST_ROOT=/opt/kaldi/local OPENBLAS_ROOT=/opt/kaldi/local make -j $(nproc)
+
+# Collect dependencies
+cp /usr/lib/gcc/x86_64-w64-mingw32/*-posix/libstdc++-6.dll /opt/vosk-api/src
+cp /usr/lib/gcc/x86_64-w64-mingw32/*-posix/libgcc_s_seh-1.dll /opt/vosk-api/src
+cp /usr/x86_64-w64-mingw32/lib/libwinpthread-1.dll /opt/vosk-api/src
+
+# Copy dlls to output folder
+mkdir -p /io/wheelhouse/win64
+cp /opt/vosk-api/src/*.dll /io/wheelhouse/win64
+
+# Build wheel and put to the output folder
+export VOSK_SOURCE=/opt/vosk-api
+export VOSK_PLATFORM=Windows
+export VOSK_ARCHITECTURE=64bit
+python3 -m pip -v wheel /opt/vosk-api/python --no-deps -w /io/wheelhouse
@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e -x
+
+# Build libvosk
+cd /opt
+git clone https://github.com/alphacep/vosk-api
+cd vosk-api/src
+CXX=i686-w64-mingw32-g++-posix EXT=dll KALDI_ROOT=/opt/kaldi/kaldi OPENFST_ROOT=/opt/kaldi/local OPENBLAS_ROOT=/opt/kaldi/local make -j $(nproc)
+
+# Copy dependencies
+cp /usr/lib/gcc/i686-w64-mingw32/*-posix/libstdc++-6.dll /opt/vosk-api/src
+cp /usr/lib/gcc/i686-w64-mingw32/*-posix/libgcc_s_sjlj-1.dll /opt/vosk-api/src
+cp /usr/i686-w64-mingw32/lib/libwinpthread-1.dll /opt/vosk-api/src
+
+# Copy dlls to output folder
+mkdir -p /io/wheelhouse/win32
+cp /opt/vosk-api/src/*.dll /io/wheelhouse/win32
+
+# Build wheel and put to the output folder
+export VOSK_SOURCE=/opt/vosk-api
+export VOSK_PLATFORM=Windows
+export VOSK_ARCHITECTURE=32bit
+python3 -m pip -v wheel /opt/vosk-api/python --no-deps -w /io/wheelhouse
@@ -1,17 +1,23 @@
 #!/bin/bash
 set -e -x

-export KALDI_ROOT=/opt/kaldi
+# Build libvosk
+cd /opt
+git clone https://github.com/alphacep/vosk-api
+cd vosk-api/src
+KALDI_ROOT=/opt/kaldi OPENFST_ROOT=/opt/kaldi/tools/openfst OPENBLAS_ROOT=/opt/kaldi/tools/OpenBLAS/install make -j $(nproc)

-# Compile wheels
-for pypath in /opt/python/cp3[56789]*; do
-    export VOSK_SOURCE=/io/src
-    mkdir -p /opt/wheelhouse
-    rm -rf /io/python/build
-    "${pypath}/bin/pip" -v wheel /io/python -w /opt/wheelhouse
-done
+# Copy dlls to output folder
+mkdir -p /io/wheelhouse/linux
+cp /opt/vosk-api/src/*.so /io/wheelhouse/linux

-# Bundle external shared libraries into the wheels
+# Build wheel and put to the output folder
+mkdir -p /opt/wheelhouse
+export VOSK_SOURCE=/opt/vosk-api
+/opt/python/cp37*/bin/pip -v wheel /opt/vosk-api/python --no-deps -w /opt/wheelhouse
+
+# Fix manylinux
 for whl in /opt/wheelhouse/*.whl; do
-    auditwheel repair "$whl" --plat $PLAT -w /io/wheelhouse/
+    cp $whl /io/wheelhouse
+    auditwheel repair "$whl" --plat manylinux2010_x86_64 -w /io/wheelhouse
 done
Author	SHA1	Message	Date
Nickolay Shmyrev	d917af21ab	Better search for Windows dlls	2021-02-12 22:24:54 +01:00
Nickolay Shmyrev	948c8c7cfd	Update to 0.3.21	2021-02-12 10:13:50 +01:00
Nickolay Shmyrev	dec8e1acf3	Move to JNA instead of JNR-FFI for better Android compatibility	2021-02-11 00:04:19 +01:00
Nickolay Shmyrev	3c020526ce	No need for byte buffer	2021-02-10 23:32:47 +01:00
Nickolay Shmyrev	b0da19b07f	Java API through JNR-FFI	2021-02-10 23:16:20 +01:00
Nickolay Shmyrev	70bcd9b018	Platform is hardcoded now	2021-02-09 23:43:56 +01:00
Nickolay Shmyrev	d2604b609d	Copy out lib files too	2021-02-09 23:36:32 +01:00
Nickolay Shmyrev	e960e0cacf	Proper libraries and demo	2021-02-09 21:43:21 +01:00
Nickolay Shmyrev	77b114d434	Rework node bindings to use node-ffi-napi	2021-02-08 23:00:56 +01:00
Nickolay V. Shmyrev	2860092cef	Merge pull request #401 from proger/patch-1 test_microphone: AcceptWaveform wants bytes	2021-02-08 01:50:07 +03:00
Vlad Ki	c6119c4835	test_microphone: AcceptWavform wants bytes	2021-02-08 00:38:28 +02:00
Nickolay Shmyrev	415d1927e0	Add win32 wheel	2021-02-07 23:08:27 +01:00
Nickolay Shmyrev	3d1e21d242	Update dockcross build to cffi	2021-02-07 21:33:39 +01:00
Nickolay Shmyrev	7a75e1c3f4	Add arm architectures	2021-02-07 20:28:14 +01:00
Nickolay Shmyrev	c3430e448a	Add build for Windows wheel	2021-02-07 18:11:38 +01:00
Nickolay Shmyrev	ae49ea60d2	Rework manylinux to use cffi	2021-02-07 15:26:23 +01:00
Nickolay Shmyrev	02dc0ce0c8	Take source location from environment	2021-02-07 15:17:35 +01:00
Nickolay Shmyrev	15697a18e8	Platform-specific wheel	2021-02-07 14:58:10 +01:00
Nickolay Shmyrev	481881e59d	Fully move python to cffi	2021-02-07 13:23:03 +01:00
Nickolay Shmyrev	11a25b26a7	Add cffi wrapper	2021-02-07 10:57:57 +01:00
Nickolay Shmyrev	bf87358f6c	Add win32 build	2021-02-07 10:12:32 +01:00
Nickolay Shmyrev	04a8242230	Add vosk-api build	2021-02-07 01:55:47 +01:00
Nickolay Shmyrev	ceb96c301c	Separate openfst root	2021-02-07 01:48:45 +01:00
Nickolay Shmyrev	307df8fdc0	Add Win cross-compilation docker	2021-02-07 01:41:37 +01:00
Nickolay Shmyrev	c44875a2dd	Build libvosk in src folder, will be used for many bindings	2021-02-07 00:42:25 +01:00
Nickolay Shmyrev	31f11990ca	Rename voskrecognizer	2021-02-07 00:32:47 +01:00
Nickolay Shmyrev	b79b85856d	Refactor C# API to properly work with nuget and precompiled libvosk.so library	2021-02-06 23:10:51 +01:00
Nickolay Shmyrev	6e861c6a19	Add nuget platforms	2021-02-05 00:39:27 +01:00
Nickolay Shmyrev	cf62296a51	Update flags to hopefully fix the build	2021-02-02 14:43:12 +01:00
Nickolay Shmyrev	387b132814	Fix model version in Makefile. Thanks to Peter Kronenberg.	2021-01-26 23:19:34 +01:00
Nickolay Shmyrev	de83de8624	Implement decoding on iOS with a microphone	2021-01-24 21:59:21 +01:00
Nickolay Shmyrev	fe91b5a717	Preprocess header on the fly	2021-01-10 21:11:35 +01:00
Nickolay Shmyrev	a052506a5d	Add cffi example	2021-01-10 20:53:43 +01:00
Nickolay Shmyrev	6f2d6d0d69	Proper microphone recognizer with the queue	2021-01-09 23:16:35 +01:00
Nickolay Shmyrev	a8ae6025bd	Add a bit more optimization	2021-01-09 16:16:32 +01:00
Nickolay Shmyrev	1b8332a609	Raise to 0.3.17	2021-01-09 02:29:56 +01:00
Nickolay Shmyrev	fe16ec7e57	Set lowest arch for linux	2021-01-09 01:47:23 +01:00
Nickolay Shmyrev	c5ce5e46bd	Add c++17	2021-01-09 01:46:13 +01:00
Nickolay Shmyrev	99d66670bc	Update Android build	2021-01-08 13:30:28 +01:00
Nickolay Shmyrev	072b42cac6	Use our own dockcross	2021-01-08 00:56:18 +01:00
Nickolay Shmyrev	acadb5b4c2	Add optimization	2021-01-07 23:41:13 +01:00
Nickolay Shmyrev	2e1de6c3af	No need for python 3.5 anymore	2021-01-07 23:20:54 +01:00
Nickolay Shmyrev	67de30908b	Use openblas_clapack	2021-01-07 22:37:56 +01:00
Nickolay Shmyrev	9d398eff0e	Remove armv6, too slow anyway. Build with new dockcross.	2021-01-06 16:26:23 +01:00
Nickolay Shmyrev	02b7312a00	Build with openblas-clapack to avoid fortran	2021-01-06 01:11:03 +01:00
Nickolay Shmyrev	08c35e84f3	Update demo with spk vector check	2020-12-23 22:21:12 +01:00
Nickolay Shmyrev	b92a5c1fc7	Update wheels to openfst 1.8.0	2020-12-22 23:27:01 +01:00
Nickolay Shmyrev	8997a587c5	Fix warnings in preparation for openfst 1.8.0	2020-12-22 21:16:20 +01:00
Nickolay Shmyrev	dc3d03d742	Make sure we have result field in json	2020-11-29 19:19:50 +01:00
Nickolay Shmyrev	84df40715c	Add Filipino	2020-11-19 14:53:46 +01:00
Nickolay Shmyrev	b639fb501a	Package US model on bintray	2020-11-04 22:08:03 +01:00
Nickolay Shmyrev	746ff47757	Split long lines in subtitles	2020-11-03 15:13:16 +01:00
Nickolay Shmyrev	2d62db8118	Update link in readme	2020-10-31 10:03:25 +01:00
Nickolay Shmyrev	7a2adcd9ba	Add nuget wraps	2020-10-26 15:57:40 +01:00
Nickolay Shmyrev	9ccf3ef0e8	Introduce CMVN in feature pipeline	2020-10-22 23:56:36 +02:00
Nickolay V. Shmyrev	0edab6d558	Merge pull request #259 from ThThoma/add-valid-word-check add isWordRecognizable()	2020-10-22 15:53:04 +03:00
Athanasios Thoma	4b344f0cd8	rename	2020-10-22 14:09:50 +03:00
Athanasios Thoma	17ddc4d5ba	add isWordRecognizable()	2020-10-21 10:00:39 +03:00
Nickolay Shmyrev	3e33860c47	Update to latest 0.3.15 changes	2020-10-20 23:50:39 +03:00