publish kaldifeat as an android aar

CMakeLists.txt

@@ -7,7 +7,7 @@ project(kaldifeat)
 # remember to change the version in
 # scripts/conda/kaldifeat/meta.yaml
 # scripts/conda-cpu/kaldifeat/meta.yaml
-set(kaldifeat_VERSION "1.18")
+set(kaldifeat_VERSION "1.19")
 
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
@@ -52,7 +52,35 @@ if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
   include(pybind11)
 endif()
 
-include(torch)
+if(ANDROID)
+  set(build_DIR ${CMAKE_SOURCE_DIR}/android/app/build)
+  # Pytorch
+  file(GLOB PYTORCH_INCLUDE_DIRS "${build_DIR}/pytorch_android*.aar/headers")
+  file(GLOB PYTORCH_LINK_DIRS "${build_DIR}/pytorch_android*.aar/jni/${ANDROID_ABI}")
+
+  find_library(PYTORCH_LIBRARIES pytorch_jni
+    PATHS ${PYTORCH_LINK_DIRS}
+    NO_CMAKE_FIND_ROOT_PATH
+  )
+
+  find_library(FBJNI_LIBRARIES fbjni
+    PATHS ${PYTORCH_LINK_DIRS}
+    NO_CMAKE_FIND_ROOT_PATH
+  )
+
+  list(APPEND TORCH_LIBRARIES ${PYTORCH_LIBRARIES})
+  list(APPEND TORCH_LIBRARIES ${FBJNI_LIBRARIES})
+
+  include_directories(
+    ${PYTORCH_INCLUDE_DIRS}
+    ${PYTORCH_INCLUDE_DIRS}/torch/csrc/api/include
+  )
+  # You SHOULD change this according to your pytorch version
+  set(KALDIFEAT_TORCH_VERSION_MAJOR 1)
+  set(KALDIFEAT_TORCH_VERSION_MINOR 11)
+else()
+  include(torch)
+endif()
 
 if(kaldifeat_BUILD_TESTS)
   include(googletest)

android/.gitignore

@@ -0,0 +1,12 @@
+*.iml
+.gradle
+/local.properties
+/.idea
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
+!build.gradle
+!gradle/wrapper/gradle-wrapper.jar

android/app/.gitignore

@@ -0,0 +1,4 @@
+/build
+/release
+.cxx
+!build.gradle

android/app/build.gradle

@@ -0,0 +1,146 @@
+plugins {
+    id 'com.android.library'
+}
+
+apply plugin: 'maven-publish'
+
+android {
+    lintOptions {
+        abortOnError false
+    }
+
+    configurations {
+        extractForNativeBuild
+    }
+
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        externalNativeBuild {
+            cmake {
+                arguments "-Dkaldifeat_BUILD_TESTS=OFF"
+            }
+        }
+
+        ndkVersion '21.1.6352462'
+        ndk {
+            abiFilters ABI_FILTERS.split(",")
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt')
+        }
+    }
+    externalNativeBuild {
+        cmake {
+            path "../../CMakeLists.txt"
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    implementation 'org.pytorch:pytorch_android:1.11'
+    extractForNativeBuild 'org.pytorch:pytorch_android:1.11'
+}
+
+task extractAARForNativeBuild {
+    doLast {
+        configurations.extractForNativeBuild.files.each {
+            def file = it.absoluteFile
+            copy {
+                from zipTree(file)
+                into "$buildDir/$file.name"
+                include "headers/**"
+                include "jni/**"
+            }
+        }
+    }
+}
+
+tasks.whenTaskAdded { task ->
+    if (task.name.contains('externalNativeBuild')) {
+        task.dependsOn(extractAARForNativeBuild)
+    }
+}
+
+def getHeadersDir() {
+  def abi = ABI_FILTERS.split(",")[0]
+  return ".cxx/cmake/release/$abi/include"
+}
+
+afterEvaluate {
+
+  android.libraryVariants.all { variant ->
+    variant.outputs.each { output ->
+      File f = output.outputFile
+      if (f.name.endsWith(".aar")) {
+        output.assemble.finalizedBy addFolderToAarTask(
+            "addHeadersToAar" + variant.name,
+            f.path,
+            getHeadersDir(),
+            "headers")
+      }
+    }
+  }
+
+  publishing {
+        publications {
+            release(MavenPublication) {
+                groupId 'com.github.pkufool'
+                artifactId 'kaldifeat'
+                version = KALDIFEAT_VERSION
+                artifact("$buildDir/outputs/aar/app-release.aar")
+            }
+        }
+    }
+}
+
+
+tasks.whenTaskAdded { task ->
+  if (task.name.startsWith("bundle") && task.name.endsWith("Aar")) {
+    doLast {
+      addFolderToAar("addHeadersTo" + task.name, task.archivePath, getHeadersDir(), 'headers')
+    }
+  }
+}
+
+def addFolderToAarTask(taskName, aarPath, folderPath, folderPathInAar) {
+  return tasks.register(taskName) {
+    doLast {
+      addFolderToAar(taskName, aarPath, folderPath, folderPathInAar)
+    }
+  }
+}
+
+def addFolderToAar(taskName, aarPath, folderPath, folderPathInAar) {
+    def tmpDir = file("${buildDir}/${taskName}")
+    tmpDir.mkdir()
+    def tmpDirFolder = file("${tmpDir.path}/${folderPathInAar}")
+    tmpDirFolder.mkdir()
+    copy {
+      from zipTree(aarPath)
+      into tmpDir
+    }
+    copy {
+      from fileTree(folderPath)
+      into tmpDirFolder
+    }
+    ant.zip(destfile: aarPath) {
+      fileset(dir: tmpDir.path)
+    }
+    delete tmpDir
+}

android/app/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest package="org.kaldifeat" />

android/build.gradle

@@ -0,0 +1,20 @@
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:4.1.3'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

android/gradle.properties

@@ -0,0 +1,22 @@
+ABI_FILTERS=arm64-v8a,x86_64
+KALDIFEAT_VERSION=1.19
+
+# 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=-Xmx4096m -Dfile.encoding=UTF-8
+# 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
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Tue Jan 12 17:33:20 CST 2021
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip

android/gradlew

@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# 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
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$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 "$darwin" = "false" -a "$nonstop" = "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
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

android/gradlew.bat

@@ -0,0 +1,84 @@
+@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
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@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=
+
+@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 Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_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=%*
+
+: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

android/settings.gradle

@@ -0,0 +1,2 @@
+include ':app'
+rootProject.name = "kaldifeat"

kaldifeat/CMakeLists.txt

@@ -1,2 +1,4 @@
 add_subdirectory(csrc)
-add_subdirectory(python)
+if(NOT ANDROID)
+  add_subdirectory(python)
+endif()

kaldifeat/csrc/CMakeLists.txt

@@ -15,6 +15,10 @@ set(kaldifeat_srcs
 add_library(kaldifeat_core ${kaldifeat_srcs})
 target_link_libraries(kaldifeat_core PUBLIC ${TORCH_LIBRARIES})
 
+if(ANDROID)
+  target_link_libraries(kaldifeat_core PUBLIC log libc++_shared.so android)
+endif()
+
 target_compile_definitions(kaldifeat_core PUBLIC KALDIFEAT_TORCH_VERSION_MAJOR=${KALDIFEAT_TORCH_VERSION_MAJOR})
 target_compile_definitions(kaldifeat_core PUBLIC KALDIFEAT_TORCH_VERSION_MINOR=${KALDIFEAT_TORCH_VERSION_MINOR})