jMonkeyEngine/jme3-android-native/openalsoft.gradle

// OpenAL Soft r1.15.1
//String openALSoftUrl = 'http://repo.or.cz/w/openal-soft.git/snapshot/9b6a226da55a987cb883f425eeb568776ea12c8d.zip'
// OpenAL Soft r1.15.1 + Android OpenSL Support
String openALSoftUrl = 'http://repo.or.cz/w/openal-soft.git/snapshot/be25e6802dacad78876c6fa1d6a5c63797b8a9ed.zip'
// OpenAL Soft r1.15.1 latest build (at the time)
//String openALSoftUrl = 'http://repo.or.cz/w/openal-soft.git/snapshot/3f5914e0949ee12b504ee7254990e007ff8057ef.zip'
String openALSoftZipFile = 'OpenALSoft.zip'

// OpenAL Soft directory the download is extracted into
// Typically, the downloaded OpenAL Soft zip file will extract to a directory
// called "openal-soft"
String openALSoftFolder = 'openal-soft'

//Working directories for the ndk build.
String openalsoftBuildDir = "${buildDir}" + File.separator + 'openalsoft'
String openalsoftBuildJniDir = openalsoftBuildDir + File.separator + 'jni'
String openalsoftBuildLibsDir = openalsoftBuildDir + File.separator + 'libs'

//Pre-compiled libs directory
String openalsoftPreCompiledLibsDir = 'libs' + File.separator + 'openalsoft'

// jME Android Native source files path
String openalsoftJmeAndroidPath = 'src/native/jme_openalsoft'

// Download external source files if not available
task downloadOpenALSoft(type: MyDownload) {
    sourceUrl = openALSoftUrl
    target = file(openALSoftZipFile)
}

// Unzip external source files
task unzipOpenALSoft(type: Copy) {
    def zipFile = file(openALSoftZipFile)
    def outputDir = file(".")

    from zipTree(zipFile)
    into outputDir
}
unzipOpenALSoft.dependsOn {
    def zipFilePath = project.projectDir.absolutePath + File.separator + openALSoftZipFile
    def zipFile = new File(zipFilePath)
//    println "zipFile path: " + zipFile.absolutePath
//    println "zipFile exists: " + zipFile.exists()
    if (!zipFile.exists()) {
        downloadOpenALSoft
    }
}

// Copy external source files to jni directory
task copyOpenALSoft(type: Copy) {
    def sourceDir = file(openALSoftFolder)
    def outputDir = file(openalsoftBuildJniDir)
//    println "copyOpenALSoft sourceDir: " + sourceDir
//    println "copyOpenALSoft outputDir: " + outputDir

    from sourceDir
    into outputDir
}
copyOpenALSoft.dependsOn {
    def openALSoftUnzipDir = new File(project.projectDir.absolutePath + File.separator + openALSoftFolder)
//    println "openALSoftUnzipDir path: " + openALSoftUnzipDir.absolutePath
//    println "openALSoftUnzipDir exists: " + openALSoftUnzipDir.isDirectory()
    if (!openALSoftUnzipDir.isDirectory()) {
        unzipOpenALSoft
    }
}

// Copy jME Android native files to jni directory
task copyJmeOpenALSoft(type: Copy, dependsOn:copyOpenALSoft) {
    def sourceDir = file(openalsoftJmeAndroidPath)
    def outputDir = file(openalsoftBuildJniDir)
//    println "copyJmeOpenALSoft sourceDir: " + sourceDir
//    println "copyJmeOpenALSoft outputDir: " + outputDir

    from sourceDir
    into outputDir
}
copyJmeOpenALSoft.doLast {
    String destDirPath = openalsoftBuildJniDir
    String classes = ""
            .concat("com.jme3.audio.android.AndroidOpenALSoftAudioRenderer, ")
//    println "openalsoft classes = " + classes
//    println "openalsoft destDir = " + destDir
//    println "openalsoft classpath = " + project.projectClassPath

    ant.javah(
        classpath: project.projectClassPath,
        destdir: destDirPath,
        class: classes
    )
}

task buildOpenAlSoftNativeLib(type: Exec, dependsOn: copyJmeOpenALSoft) {
//    println "openalsoft build dir: " + openalsoftBuildDir
//    println "ndkCommandPath: " + project.ndkCommandPath
    args 'TARGET_PLATFORM=android-9'
    workingDir openalsoftBuildDir
    executable project.ndkCommandPath
}

// Copy pre-compiled libs to build directory (when not building new libs)
task copyPreCompiledOpenAlSoftLibs(type: Copy) {
    def sourceDir = file(openalsoftPreCompiledLibsDir)
    def outputDir = file(openalsoftBuildLibsDir)
//    println "copyStbiJmeFiles sourceDir: " + sourceDir
//    println "copyStbiJmeFiles outputDir: " + outputDir

    from sourceDir
    into outputDir
}

if (ndkExists()) {
    compileJava.dependsOn { buildOpenAlSoftNativeLib }
} else {
    compileJava.dependsOn { copyPreCompiledOpenAlSoftLibs }
}

jar.into("lib") { from openalsoftBuildLibsDir }

// Helper class to wrap ant dowload task
class MyDownload extends DefaultTask {
    @Input
    String sourceUrl

    @OutputFile
    File target

    @TaskAction
    void download() {
       ant.get(src: sourceUrl, dest: target)
    }
}