Add support for downloading and building OpenAL Soft for native Android audio

git-svn-id: https://jmonkeyengine.googlecode.com/svn/branches/gradle-restructure@10988 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

jme3-android-native/build.gradle

@@ -9,6 +9,32 @@
 // Note however, that you may define your own "run" and "debug" task if you
 // prefer. In this case NetBeans will not add these tasks but you may rely on
 // your own implementation.
+// // 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'
+
+// 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 directory for the ndk build.
+//Must be the parent directory of the jni directory
+//Libs directory (output of ndk) will be created in this directory as well
+String ndkWorkingPath = 'src/native'
+
+// jni folder path to build from
+String jniPath = ndkWorkingPath + '/jni'
+
+//Output directory of the NDK (do not change)
+String ndkOutputPath = ndkWorkingPath + '/libs'
+
+// jME Android Native source files path
+String jMEAndroidPath = 'src/native/android'
+
 if (!hasProperty('mainClass')) {
     ext.mainClass = ''
 }
@@ -16,7 +42,7 @@ if (!hasProperty('mainClass')) {
 sourceSets {
     main {
         java {
-            srcDir 'src/native/android'
+            srcDir jMEAndroidPath
         }
     }
 }
@@ -29,4 +55,80 @@ dependencies {
     //
     // You can read more about how to add dependency here:
     //   http://www.gradle.org/docs/current/userguide/dependency_management.html#sec:how_to_declare_your_dependencies
+    compile project(':jme3-android')
+}
+
+// Download bullet if not available
+task downloadOpenALSoft(type: MyDownload) {
+    sourceUrl = openALSoftUrl
+    target = file('OpenALSoft.zip')
+}
+
+// Unzip OpenALSoft
+task unzipOpenALSoft(type: Copy, dependsOn:downloadOpenALSoft) {
+    def zipFile = file('OpenALSoft.zip')
+    def outputDir = file(".")
+
+    from zipTree(zipFile)
+    into outputDir
+}
+
+// Copy OpenALSoft files to jni directory
+task copyOpenALSoft(type: Copy, dependsOn:unzipOpenALSoft) {
+    def sourceDir = file(openALSoftFolder)
+    def outputDir = file(jniPath)
+
+    from sourceDir
+    into outputDir
+}
+
+// Copy jME Android native files to jni directory
+task copyJmeOpenALSoft(type: Copy, dependsOn:copyOpenALSoft) {
+    def sourceDir = file(jMEAndroidPath)
+    def outputDir = file(jniPath)
+
+    from sourceDir
+    into outputDir
+}
+
+task buildNative(type: Exec, dependsOn:copyJmeOpenALSoft) {
+    String ndkBuildFile = "ndk-build"
+    // if windows, use ndk-build.cmd instead
+    if (System.properties['os.name'].toLowerCase().contains('windows')) {
+        ndkBuildFile = "ndk-build.cmd"
+    }
+
+    String ndkBuildPath = ndkPath + File.separator + ndkBuildFile
+    //Use the environment variable for the NDK location if defined
+    if (System.env.ANDROID_NDK != null) {
+        ndkBuildPath = System.env.ANDROID_NDK + File.separator + ndkBuildFile
+    }
+
+    // need to target android-9 so the ndk can pull in the opensl library
+    args 'TARGET_PLATFORM=android-9'
+    workingDir ndkWorkingPath
+    executable ndkBuildPath
+}
+
+jar.into("lib") { from ndkOutputPath }
+
+compileJava.dependsOn {
+    def ndkFile = new File(ndkPath)
+    if (ndkFile.exists()) {
+        buildNative
+    }
+}
+
+// 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)
+    }
 }