first commit

.gitignore

@@ -0,0 +1,48 @@
+# Built application files
+*.apk
+*.ap_
+
+# Files for the ART/Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+out/
+
+# Gradle files
+.gradle/
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Log Files
+*.log
+
+# Android Studio Navigation editor temp files
+.navigation/
+
+# Android Studio captures folder
+captures/
+
+# Intellij
+*.iml
+.idea/workspace.xml
+.idea/modules.xml
+.idea/misc.xml
+.idea/libraries
+.idea/vcs.xml
+.idea/codeStyleSettings.xml
+
+# Keystore files
+*.jks
+
+# External native build folder generated in Android Studio 2.2 and later
+.externalNativeBuild

.idea/compiler.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <resourceExtensions />
+    <wildcardResourcePatterns>
+      <entry name="!?*.java" />
+      <entry name="!?*.form" />
+      <entry name="!?*.class" />
+      <entry name="!?*.groovy" />
+      <entry name="!?*.scala" />
+      <entry name="!?*.flex" />
+      <entry name="!?*.kt" />
+      <entry name="!?*.clj" />
+      <entry name="!?*.aj" />
+    </wildcardResourcePatterns>
+    <annotationProcessing>
+      <profile default="true" name="Default" enabled="false">
+        <processorPath useClasspath="true" />
+      </profile>
+    </annotationProcessing>
+  </component>
+</project>

.idea/copyright/profiles_settings.xml

@@ -0,0 +1,3 @@
+<component name="CopyrightManager">
+  <settings default="" />
+</component>

.idea/encodings.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="PROJECT" charset="UTF-8" />
+  </component>
+</project>

.idea/gradle.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$/../dixitmobile-common/library" />
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/vxt-audio-recorder" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

.idea/runConfigurations.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>

build.gradle

@@ -0,0 +1,23 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.3.0'
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

gradle.properties

@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Thu Mar 16 12:26:18 CET 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip

gradlew

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+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

gradlew.bat

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+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

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+include ':vxt-audio-recorder'
+include ':library'
+project(':library').projectDir = new File('../dixitmobile-common/library')

vxt-audio-recorder/.gitignore

@@ -0,0 +1 @@
+/build

vxt-audio-recorder/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.2"
+
+    signingConfigs {
+        demo {
+            storeFile file("../../.keystore/tellnext.jks")
+            storePassword "tellnext"
+            keyAlias "tellnext_demo"
+            keyPassword "tellnext"
+        }
+    }
+
+    defaultConfig {
+        applicationId "com.voixtreme.audiorecorder"
+        minSdkVersion 17
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            signingConfig signingConfigs.demo
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile project (':library')
+    testCompile 'junit:junit:4.12'
+}

vxt-audio-recorder/proguard-rules.pro

@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /AndroidSDK/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

vxt-audio-recorder/src/androidTest/java/com/voixtreme/audiorecorder/ExampleInstrumentedTest.java

@@ -0,0 +1,26 @@
+package com.voixtreme.audiorecorder;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.tellnext.recordaudio", appContext.getPackageName());
+    }
+}

vxt-audio-recorder/src/main/AndroidManifest.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.voixtreme.audiorecorder">
+
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
+    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
+
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+
+        <activity
+            android:name="com.voixtreme.audiorecorder.MainActivity"
+            android:label="@string/app_name"
+            android:screenOrientation="portrait" >
+
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

vxt-audio-recorder/src/main/java/com/voixtreme/audiorecorder/MainActivity.java

@@ -0,0 +1,593 @@
+package com.voixtreme.audiorecorder;
+
+import java.io.BufferedOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.Locale;
+
+import android.Manifest;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+
+import android.media.AudioFormat;
+import android.media.AudioManager;
+import android.media.AudioRecord;
+import android.media.MediaPlayer;
+import android.media.MediaRecorder;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Environment;
+import android.support.annotation.NonNull;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.view.menu.ExpandedMenuView;
+import android.text.format.Time;
+import android.text.method.ScrollingMovementMethod;
+import android.util.Log;
+import android.view.View;
+
+import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+
+import com.dixitmobile.common.VerifyPermissions;
+
+/**
+ * jima (2017-05-23)
+ *
+ * Example project showing how to pair/unpair/list BT devices... changed to record audio through "startBluetoothSco()"
+ * Would need a cleanup someday...
+ */
+public class MainActivity extends AppCompatActivity {
+	private static final String TAG = "MainActivity";
+
+    public static final int SAMPLE_RATE = 16000;
+    public static final boolean isStereo = false;
+
+    private static final String SOUND_PATH = "voixtreme/sound_test";
+
+	private Button mBTSettingsBtn;
+	private Button mBTToggle;
+	private Button mRecordAudioBtn;
+	private Button mStopRecordAudioBtn;
+	private Button mPlayRecording;
+    private float iGain = 1.0f;
+    private TextView mLog;
+
+    protected int bitsPerSamples = 16;
+
+	private AudioManager mAudioManager;
+    private short[] mBuffer;
+
+    private AudioRecord mRecorder;
+    private int mFileCounter = 1;
+
+    private boolean mIsRecording = false;
+
+    private VerifyPermissions mVerifyPermissions;
+	private BluetoothAdapter mBluetoothAdapter;
+	
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mVerifyPermissions = new VerifyPermissions(this);
+        mVerifyPermissions.addPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);
+        mVerifyPermissions.addPermission(Manifest.permission.RECORD_AUDIO);
+        if(mVerifyPermissions.checkPermissions()) {
+            initialize();
+        }
+    }
+
+    private void initialize() {
+		
+		setContentView(R.layout.activity_main);
+
+		mLog     			= (TextView) findViewById(R.id.log);
+        mLog.setMovementMethod(new ScrollingMovementMethod());
+        mLog.setText("");
+
+		mBTSettingsBtn  	= (Button) findViewById(R.id.btn_bt_settings);
+		mBTToggle       	= (Button) findViewById(R.id.btn_bt_toggle);
+		mRecordAudioBtn		= (Button) findViewById(R.id.btn_record_audio);
+		mPlayRecording		= (Button) findViewById(R.id.btn_play);
+		mStopRecordAudioBtn	= (Button) findViewById(R.id.btn_stop_record_audio);
+        mRecordAudioBtn.setOnClickListener(mRecordAudioClickListener);
+        mStopRecordAudioBtn.setOnClickListener(mStopRecordAudioClickListener);
+
+        File dir = new File(System.getenv("EXTERNAL_STORAGE") + "/" + SOUND_PATH);
+        if (dir.exists()) {
+            log("save dir: " + dir.getAbsolutePath());
+        } else {
+            if (dir.mkdirs()) {
+                log("created directory: " + dir.getAbsolutePath());
+            } else {
+                log("could NOT create directory: " + dir.getAbsolutePath());
+            }
+        }
+
+		mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
+		mBluetoothAdapter	= BluetoothAdapter.getDefaultAdapter();
+        if (mBluetoothAdapter.isEnabled()) {
+            showBTEnabled();
+        } else {
+            showBTDisabled();
+        }
+
+		mBTSettingsBtn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                Intent intentOpenBluetoothSettings = new Intent();
+                intentOpenBluetoothSettings.setAction(android.provider.Settings.ACTION_BLUETOOTH_SETTINGS);
+                startActivity(intentOpenBluetoothSettings);
+            }
+        });
+
+        mBTToggle.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                if (mBluetoothAdapter.isEnabled()) {
+                    mBluetoothAdapter.disable();
+                } else {
+                    mBluetoothAdapter.enable();
+                }
+            }
+        });
+
+        mPlayRecording.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                File file = new File(System.getenv("EXTERNAL_STORAGE") + "/" + SOUND_PATH + "/sound"
+                                   + String.format(Locale.UK, "%03d", mFileCounter) + ".wav");
+
+                if (file.exists()) {
+                    try {
+                        MediaPlayer mp = new MediaPlayer();
+                        mp.setDataSource(file.getAbsolutePath());
+                        mp.prepare();
+                        mp.start();
+                    } catch (Exception e) {
+                        log("Cannot play wav file: " + e.getMessage());
+                        e.printStackTrace();
+                    }
+                } else {
+                    Toast.makeText(MainActivity.this, "No file to play", Toast.LENGTH_SHORT).show();
+                }
+            }
+        });
+		
+		IntentFilter filter = new IntentFilter();
+
+		filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
+		filter.addAction(BluetoothDevice.ACTION_FOUND);
+		filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
+		filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
+
+        registerReceiver(mScoReceiver, new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_UPDATED));
+		registerReceiver(mReceiver, filter);
+    }
+	
+	@Override
+	public void onDestroy() {
+
+		unregisterReceiver(mScoReceiver);
+		unregisterReceiver(mReceiver);
+        mAudioManager.setBluetoothScoOn(false);
+
+        super.onDestroy();
+	}
+
+	private void showBTEnabled() {
+
+        stopRecording();
+        mRecordAudioBtn.setText(R.string.record_start_bt);
+        mBTToggle.setText(R.string.text_disable);
+
+        log("bluetooth enabled...");
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            log("isVolumeFixed?: " + mAudioManager.isVolumeFixed());
+        }
+	}
+	
+	private void showBTDisabled() {
+
+        stopRecording();
+        mRecordAudioBtn.setText(R.string.record_start_mic);
+        mBTToggle.setText(R.string.text_enable);
+
+        log("bluetooth disabled...");
+	}
+	
+	private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
+	    public void onReceive(Context context, Intent intent) {	    	
+	        String action = intent.getAction();
+
+            if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) {
+	        	final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
+
+	        	if (state == BluetoothAdapter.STATE_ON) {
+	        		showBTEnabled();
+	        	 } else if (state == BluetoothAdapter.STATE_OFF) {
+                    showBTDisabled();
+                }
+	        } else if (BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action)) {
+
+	        } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
+
+	        } else if (BluetoothDevice.ACTION_FOUND.equals(action)) {
+
+	        } else {
+                log("Unknown broadcast: " + action);
+            }
+	    }
+	};
+
+
+	View.OnClickListener mRecordAudioClickListener = new View.OnClickListener() {
+		@Override
+		public void onClick(View v) {
+
+            mRecordAudioBtn.setEnabled(false);
+            mStopRecordAudioBtn.setEnabled(true);
+
+            if (mRecordAudioBtn.getText().equals(getString(R.string.record_start_bt))) {
+                mAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
+
+                if (mAudioManager.isBluetoothScoAvailableOffCall()) {
+                    if (!mAudioManager.isBluetoothScoOn()) {
+                        mAudioManager.setBluetoothScoOn(true);
+                    }
+
+                    mAudioManager.startBluetoothSco();
+                } else {
+                    log("bluetoothSCO NOT AVAILABLE");
+                }
+            } else {
+                mAudioManager.setMode(AudioManager.MODE_NORMAL);
+                startRecording();
+            }
+        }
+	};
+	View.OnClickListener mStopRecordAudioClickListener = new View.OnClickListener() {
+		@Override
+		public void onClick(View v) {
+
+            mRecordAudioBtn.setEnabled(true);
+            mStopRecordAudioBtn.setEnabled(false);
+
+            log("-- stop recording");
+
+            mIsRecording = false;
+            mAudioManager.setMode(AudioManager.MODE_NORMAL);
+            mAudioManager.stopBluetoothSco();
+
+            mRecorder.stop();
+            mAudioManager.stopBluetoothSco();
+            mIsRecording = false;
+
+            File inFile = new File(System.getenv("EXTERNAL_STORAGE") + "/" + SOUND_PATH + "/sound"
+                                + String.format(Locale.UK, "%03d", mFileCounter) + ".raw");
+            File outFile = new File(System.getenv("EXTERNAL_STORAGE") + "/" + SOUND_PATH + "/sound"
+                                  + String.format(Locale.UK, "%03d", mFileCounter) + ".wav");
+            if (outFile.exists()) {
+                outFile.delete();
+            }
+
+            log("raw file: " + inFile.getAbsoluteFile());
+            log("wav file: " + outFile.getAbsoluteFile());
+
+            try {
+                rawToWave(inFile, outFile);
+            } catch (Exception e) {
+                log("ERROR converting to wav...");
+                e.printStackTrace();
+            }
+        }
+	};
+
+    BroadcastReceiver mScoReceiver = new BroadcastReceiver() {
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+
+            if (!intent.getAction().equals(AudioManager.ACTION_SCO_AUDIO_STATE_UPDATED)) {
+                return;
+            }
+
+            int state = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE, -1);
+//            int prevState = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_PREVIOUS_STATE, -1);
+
+            if (state == AudioManager.SCO_AUDIO_STATE_DISCONNECTED) {
+
+                log("disconnected...");
+                stopRecording();
+            }
+            else if (state == AudioManager.SCO_AUDIO_STATE_CONNECTING) {
+
+                log("connecting...");
+            }
+            else if (state == AudioManager.SCO_AUDIO_STATE_CONNECTED) {
+
+                log("connected...");
+                startRecording();
+            }
+        }
+    };
+
+    private void startRecording() {
+
+        if (mIsRecording) {
+            return;
+        }
+
+        int bufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE
+                , (isStereo ? AudioFormat.CHANNEL_IN_STEREO
+                        : AudioFormat.CHANNEL_IN_MONO)
+                , AudioFormat.ENCODING_PCM_16BIT);
+        mBuffer = new short[bufferSize];
+        mRecorder = new AudioRecord(MediaRecorder.AudioSource.VOICE_RECOGNITION
+                , SAMPLE_RATE
+                , (isStereo ? AudioFormat.CHANNEL_IN_STEREO
+                : AudioFormat.CHANNEL_IN_MONO)
+                , AudioFormat.ENCODING_PCM_16BIT
+                , bufferSize);
+
+        try {
+            mRecorder.startRecording();
+        } catch (Exception e) {
+            e.printStackTrace();
+            log("recording error: " + e.getMessage());
+            return;
+        }
+
+        mIsRecording = true;
+        if (mRecordAudioBtn.getText().equals(getString(R.string.record_start_bt))) {
+            log("-- recording BT...");
+        } else {
+            log("-- recording MIC...");
+        }
+
+        File file = new File(System.getenv("EXTERNAL_STORAGE") + "/" + SOUND_PATH + "/sound"
+                           + String.format(Locale.UK, "%03d", mFileCounter) + ".raw");
+        if (file.exists()) {
+            file.delete();
+        }
+
+        startBufferedWrite(file);
+    }
+
+    private void stopRecording() {
+
+        if (mIsRecording) {
+            mStopRecordAudioBtn.callOnClick();
+        } else {
+            mStopRecordAudioBtn.setEnabled(false);
+            mRecordAudioBtn.setEnabled(true);
+        }
+    }
+
+    private void startBufferedWrite(final File file) {
+
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+
+                DataOutputStream output = null;
+                int logSize = 1024*50;
+                int curSize = 0;
+                int total = 0;
+
+                try {
+                    output = new DataOutputStream(new BufferedOutputStream(
+                            new FileOutputStream(file)));
+
+                    while (mIsRecording) {
+                        double sum = 0;
+
+                        int readSize = mRecorder.read(mBuffer, 0,
+                                mBuffer.length);
+
+                        curSize += readSize;
+                        if (curSize > logSize) {
+                            total += curSize;
+                            curSize = 0;
+                            final int totalKb = (total/1024);
+
+                            runOnUiThread(new Runnable() {
+                                @Override
+                                public void run() {
+
+//                                    log("written...: " + totalKb + "Kb");
+                                }
+                            });
+                        }
+
+                        final int bytesPerSample = bitsPerSamples / 8;
+                        final int emptySpace = 64 - bitsPerSamples;
+                        int byteIndex = 0;
+                        int byteIndex2 = 0;
+                        int temp = 0;
+                        int mLeftTemp = 0;
+                        int mRightTemp = 0;
+                        int a = 0;
+                        int x = 0;
+
+                        for (int frameIndex = 0; frameIndex < readSize; frameIndex++) {
+                            for (int c = 0; c < 1; c++) {
+                                if (iGain != 1) {
+                                    long accumulator = 0;
+                                    for (int b = 0; b < bytesPerSample; b++) {
+
+                                        accumulator += ((long) (mBuffer[byteIndex++] & 0xFF)) << (b * 8 + emptySpace);
+                                    }
+
+                                    double sample = ((double) accumulator / (double) Long.MAX_VALUE);
+                                    sample *= iGain;
+                                    int intValue = (int) ((double) sample * (double) Integer.MAX_VALUE);
+                                    for (int i = 0; i < bytesPerSample; i++) {
+                                        mBuffer[i + byteIndex2] = (byte) (intValue >>> ((i + 2) * 8) & 0xff);
+                                    }
+
+                                    byteIndex2 += bytesPerSample;
+                                }
+                            }// end for(channel)
+
+                            // mBuffer[frameIndex] *=iGain;
+                            if (mBuffer[frameIndex] > 32765) {
+                                mBuffer[frameIndex] = 32767;
+                            } else if (mBuffer[frameIndex] < -32767) {
+                                mBuffer[frameIndex] = -32767;
+                            }
+
+                            output.writeShort(mBuffer[frameIndex]);
+                            sum += mBuffer[frameIndex] * mBuffer[frameIndex];
+                        }
+
+                        if (readSize > 0) {
+                            final double amplitude = sum / readSize;
+//                            mProgressBar.setProgress((int) Math.sqrt(amplitude));
+                        }
+                    }
+                } catch (IOException e) {
+                    Toast.makeText(MainActivity.this, e.getMessage(),
+                            Toast.LENGTH_SHORT).show();
+                } finally {
+//                    mProgressBar.setProgress(0);
+                    if (output != null) {
+                        try {
+                            output.flush();
+                        } catch (IOException e) {
+                            Toast.makeText(MainActivity.this, e.getMessage(),
+                                    Toast.LENGTH_SHORT).show();
+                        } finally {
+                            try {
+                                output.close();
+                            } catch (IOException e) {
+                                Toast.makeText(MainActivity.this, e.getMessage(),
+                                        Toast.LENGTH_SHORT).show();
+                            }
+                        }
+                    }
+                }
+            }
+        }).start();
+    }
+
+
+    private void rawToWave(final File rawFile, final File waveFile)
+            throws IOException {
+
+        byte[] rawData = new byte[(int) rawFile.length()];
+        DataInputStream input = null;
+        try {
+
+            input = new DataInputStream(new FileInputStream(rawFile));
+            input.read(rawData);
+        } finally {
+            if (input != null) {
+                input.close();
+            }
+        }
+
+        DataOutputStream output = null;
+        try {
+            output = new DataOutputStream(new FileOutputStream(waveFile));
+            // WAVE header
+            // see http://ccrma.stanford.edu/courses/422/projects/WaveFormat/
+            writeString(output, "RIFF"); // chunk id
+            writeInt(output, 36 + rawData.length); // chunk size
+            writeString(output, "WAVE"); // format
+            writeString(output, "fmt "); // subchunk 1 id
+            writeInt(output, 16); // subchunk 1 size
+            writeShort(output, (short) 1); // audio format (1 = PCM)
+            writeShort(output, (short) (isStereo ? 2 : 1)); // number of channels
+            writeInt(output, SAMPLE_RATE); // sample rate
+            writeInt(output, SAMPLE_RATE * 2); // byte rate
+            writeShort(output, (short) 2); // block align
+            writeShort(output, (short) 16); // bits per sample
+            writeString(output, "data"); // subchunk 2 id
+            writeInt(output, rawData.length); // subchunk 2 size
+            // Audio data (conversion big endian -> little endian)
+            short[] shorts = new short[rawData.length / 2];
+            ByteBuffer.wrap(rawData).order(ByteOrder.LITTLE_ENDIAN)
+                    .asShortBuffer().get(shorts);
+            ByteBuffer bytes = ByteBuffer.allocate(shorts.length * 2);
+
+            for (short s : shorts) {
+
+                // Apply Gain
+            /*
+             * s *= iGain; if(s>32767) { s=32767; } else if(s<-32768) {
+             * s=-32768; }
+             */
+                bytes.putShort(s);
+            }
+            output.write(bytes.array());
+        } finally {
+            if (output != null) {
+                output.close();
+            }
+        }
+    }
+
+    private File getFile(final String suffix) {
+
+        Time time = new Time();
+        time.setToNow();
+        return new File(Environment.getExternalStorageDirectory(),
+                time.format("%Y%m%d%H%M%S") + "." + suffix);
+    }
+
+    private void writeInt(final DataOutputStream output, final int value)
+            throws IOException {
+        output.write(value >> 0);
+        output.write(value >> 8);
+        output.write(value >> 16);
+        output.write(value >> 24);
+    }
+
+    private void writeShort(final DataOutputStream output, final short value)
+            throws IOException {
+        output.write(value >> 0);
+        output.write(value >> 8);
+    }
+
+    private void writeString(final DataOutputStream output, final String value)
+            throws IOException {
+        for (int i = 0; i < value.length(); i++) {
+            output.write(value.charAt(i));
+        }
+    }
+
+    private void log(String txt) {
+
+        Log.d(TAG, txt.trim());
+        mLog.append(txt + "\n");
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+
+        if (requestCode == VerifyPermissions.REQUEST_CODE_PERMISSIONS) {
+            if (mVerifyPermissions.onRequestPermissionResult(requestCode, permissions, grantResults)) {
+                initialize();
+            } else {
+                mVerifyPermissions.showErrorDialog(R.string.error_no_permission, true);
+            }
+        }
+    }
+}

vxt-audio-recorder/src/main/res/layout/activity_main.xml

@@ -0,0 +1,66 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="@dimen/activity_vertical_margin">
+
+    <ImageView
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:paddingTop="3dp"
+        android:src="@drawable/logo_voixtreme" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/btn_bt_settings"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/activity_vertical_margin"
+            android:layout_weight="0.5"
+            android:enabled="true"
+            android:text="@string/text_bt_settings" />
+
+        <Button
+            android:id="@+id/btn_bt_toggle"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/activity_vertical_margin"
+            android:layout_weight="0.5"
+            android:enabled="true"
+            android:text="@string/text_enable" />
+    </LinearLayout>
+
+    <Button
+        android:id="@+id/btn_record_audio"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/activity_vertical_margin"
+        android:enabled="false"
+        android:text="@string/record_start_bt" />
+
+    <Button
+        android:id="@+id/btn_play"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/activity_vertical_margin"
+        android:text="@string/play_wav" />
+
+    <Button
+        android:id="@+id/btn_stop_record_audio"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/activity_vertical_margin"
+        android:enabled="false"
+        android:text="@string/record_stop" />
+
+    <TextView
+        android:id="@+id/log"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="bottom"/>
+
+</LinearLayout>

vxt-audio-recorder/src/main/res/layout/activity_paired_devices.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="@dimen/activity_vertical_margin">
+
+    <TextView
+        android:id="@+id/tv_status"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:textSize="17sp"
+        android:text="@string/text_list_devices" />
+    
+    <ListView
+        android:id="@+id/lv_paired"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/activity_vertical_margin"
+        android:cacheColorHint="#00000000" />
+
+</LinearLayout>

vxt-audio-recorder/src/main/res/layout/list_item_device.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical" 
+    android:paddingTop="5dp"
+    android:paddingBottom="5dp">
+
+    <Button
+        android:id="@+id/btn_pair"
+        android:layout_width="125dp"
+        android:layout_height="wrap_content"        
+        android:layout_centerInParent="true"
+        android:layout_alignParentRight="true"
+        android:text="@string/text_pair" />
+    
+    <TextView
+        android:id="@+id/tv_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_toLeftOf="@+id/btn_pair"
+        android:layout_alignTop="@+id/btn_pair"
+        android:layout_alignParentLeft="true"
+        android:textSize="16sp"
+        android:textColor="#000000"
+        android:text="Galaxy Nexus" />
+	
+    <TextView
+        android:id="@+id/tv_address"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_toLeftOf="@+id/btn_pair"
+        android:layout_alignParentLeft="true"
+        android:layout_alignBottom="@+id/btn_pair"
+        android:text="000000000" />
+    
+</RelativeLayout>

vxt-audio-recorder/src/main/res/values-w820dp/dimens.xml

@@ -0,0 +1,6 @@
+<resources>
+    <!-- Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
+    <dimen name="activity_horizontal_margin">64dp</dimen>
+</resources>

vxt-audio-recorder/src/main/res/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#3F51B5</color>
+    <color name="colorPrimaryDark">#303F9F</color>
+    <color name="colorAccent">#FF4081</color>
+</resources>

vxt-audio-recorder/src/main/res/values/dimens.xml

@@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">5dp</dimen>
+</resources>

vxt-audio-recorder/src/main/res/values/strings.xml

@@ -0,0 +1,28 @@
+<resources>
+    <string name="app_name">VoiXtreme Audio Recorder</string>
+
+    <string name="action_settings">Settings</string>
+    <string name="hello_world">Hello world!</string>
+
+    <string name="text_bluetooth_off">BT is Off</string>
+    <string name="text_bluetooth_on">BT is On</string>
+
+    <string name="text_enable">Enable BT</string>
+    <string name="text_disable">Disable BT</string>
+
+    <string name="play_wav">Play Last Recording</string>
+    <string name="record_start_bt">Record BT Headset</string>
+    <string name="record_start_mic">Record Device Mic</string>
+    <string name="record_stop">Stop Recording</string>
+
+    <string name="text_view_paired">Paired Devices</string>
+    <string name="text_scan_devices">Scan Devices</string>
+    <string name="text_connect_sco">Connect SCO</string>
+    <string name="text_bt_settings">BT Settings</string>
+    <string name="text_stop_scan">Scan Devices</string>
+
+    <string name="text_list_paired_devices">Paired Devices</string>
+    <string name="text_list_devices">List of Devices</string>
+
+    <string name="text_pair">Pair</string>
+</resources>

vxt-audio-recorder/src/main/res/values/styles.xml

@@ -0,0 +1,11 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+</resources>

vxt-audio-recorder/src/test/java/com/voixtreme/audiorecorder/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package com.voixtreme.audiorecorder;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() throws Exception {
+        assertEquals(4, 2 + 2);
+    }
+}