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237 lines
7.6 KiB
Java
237 lines
7.6 KiB
Java
/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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Part of the Processing project - http://processing.org
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Copyright (c) 2011-12 Ben Fry and Casey Reas
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General
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Public License along with this library; if not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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Boston, MA 02111-1307 USA
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*/
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package processing.video;
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import java.util.HashMap;
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import java.util.Map;
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import com.sun.jna.Library;
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import com.sun.jna.Native;
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import com.sun.jna.Platform;
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/**
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* This class loads the gstreamer native libraries.
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* By Andres Colubri
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* Based on code by Tal Shalif
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*
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*/
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public class LibraryLoader {
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public interface DummyLibrary extends Library {
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}
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private static LibraryLoader instance;
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static final Object[][] WINDOWS_DEPENDENCIES = {
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// glib libraries
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{ "gio-2.0", new String[] {}, true },
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{ "glib-2.0", new String[] {}, true },
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{ "gmodule-2.0", new String[] {}, true },
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{ "gobject-2.0", new String[] {}, true },
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{ "gthread-2.0", new String[] {}, true },
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// Core gstreamer libraries
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{ "gstapp-0.10", new String[] {}, true },
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{ "gstaudio-0.10", new String[] {}, true },
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{ "gstbase-0.10", new String[] {}, true },
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{ "gstbasevideo-0.10", new String[] {}, true },
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{ "gstcdda-0.10", new String[] {}, true },
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{ "gstcontroller-0.10", new String[] {}, true },
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{ "gstdataprotocol-0.10", new String[] {}, true },
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{ "gstfft-0.10", new String[] {}, true },
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{ "gstinterfaces-0.10", new String[] {}, true },
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{ "gstnet-0.10", new String[] {}, true },
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{ "gstnetbuffer-0.10", new String[] {}, true },
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{ "gstpbutils-0.10", new String[] {}, true },
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{ "gstphotography-0.10", new String[] {}, true },
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{ "gstreamer-0.10", new String[] {}, true },
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{ "gstriff-0.10", new String[] {}, true },
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{ "gstrtp-0.10", new String[] {}, true },
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{ "gstrtsp-0.10", new String[] {}, true },
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{ "gstsdp-0.10", new String[] {}, true },
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{ "gstsignalprocessor-0.10", new String[] {}, true },
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{ "gsttag-0.10", new String[] {}, true },
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{ "gstvideo-0.10", new String[] {}, true },
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// External libraries
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{ "libiconv-2", new String[] {}, false },
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{ "libintl-8", new String[] {}, false },
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{ "libjpeg-8", new String[] {}, false },
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{ "libogg-0", new String[] {}, false },
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{ "liborc-0.4-0", new String[] {}, false },
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{ "liborc-test-0.4-0", new String[] {}, false },
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{ "libpng14-14", new String[] {}, false },
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{ "libtheora-0", new String[] {}, false },
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{ "libtheoradec-1", new String[] {}, false },
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{ "libtheoraenc-1", new String[] {}, false },
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{ "libvorbis-0", new String[] {}, false },
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{ "libvorbisenc-2", new String[] {}, false },
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{ "libvorbisfile-3", new String[] {}, false },
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{ "libxml2-2", new String[] {}, false },
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{ "zlib1", new String[] {}, false } };
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static final Object[][] MACOSX_DEPENDENCIES = {
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{ "gstbase-0.10", new String[] { "gstreamer-0.10" }, true },
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{ "gstinterfaces-0.10", new String[] { "gstreamer-0.10" }, true },
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{ "gstcontroller-0.10", new String[] { "gstreamer-0.10" }, true },
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{ "gstaudio-0.10", new String[] { "gstbase-0.10" }, true },
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{ "gstvideo-0.10", new String[] { "gstbase-0.10" }, true } };
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static final Object[][] DEFAULT_DEPENDENCIES = {
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{ "gstreamer-0.10", new String[] {}, true },
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{ "gstbase-0.10", new String[] { "gstreamer-0.10" }, true },
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{ "gstinterfaces-0.10", new String[] { "gstreamer-0.10" }, true },
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{ "gstcontroller-0.10", new String[] { "gstreamer-0.10" }, true },
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{ "gstaudio-0.10", new String[] { "gstbase-0.10" }, true },
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{ "gstvideo-0.10", new String[] { "gstbase-0.10" }, true }, };
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static final Object[][] dependencies =
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Platform.isWindows() ? WINDOWS_DEPENDENCIES :
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Platform.isMac() ? MACOSX_DEPENDENCIES : DEFAULT_DEPENDENCIES;
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private static final Map<String, Object> loadedMap =
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new HashMap<String, Object>();
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private static final int RECURSIVE_LOAD_MAX_DEPTH = 5;
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private LibraryLoader() {
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}
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private void preLoadLibs() {
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for (Object[] a : dependencies) {
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load(a[0].toString(), DummyLibrary.class, true, 0, (Boolean) a[2]);
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}
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}
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private String[] findDeps(String name) {
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for (Object[] a : dependencies) {
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if (name.equals(a[0])) {
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return (String[]) a[1];
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}
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}
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return new String[] {}; // library dependancy load chain unspecified -
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// probably client call
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}
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public Object load(String name, Class<?> clazz, boolean reqLib) {
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return load(name, clazz, true, 0, reqLib);
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}
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private Object load(String name, Class<?> clazz, boolean forceReload,
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int depth, boolean reqLib) {
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assert depth < RECURSIVE_LOAD_MAX_DEPTH : String.format(
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"recursive max load depth %s has been exceeded", depth);
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Object library = loadedMap.get(name);
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if (null == library || forceReload) {
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// Logger.getAnonymousLogger().info(String.format("%" + ((depth + 1) * 2)
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// + "sloading %s", "->", name));
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try {
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String[] deps = findDeps(name);
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for (String lib : deps) {
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load(lib, DummyLibrary.class, false, depth + 1, reqLib);
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}
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library = loadLibrary(name, clazz, reqLib);
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if (library != null) {
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loadedMap.put(name, library);
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}
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} catch (Exception e) {
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if (reqLib)
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throw new RuntimeException(String.format(
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"can not load required library %s", name, e));
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else
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System.out.println(String.format("can not load library %s", name, e));
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}
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}
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return library;
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}
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private static Object loadLibrary(String name, Class<?> clazz,
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boolean reqLib) {
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// Logger.getAnonymousLogger().info(String.format("loading %s", name));
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String[] nameFormats;
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nameFormats = Platform.isWindows() ? new String[] { "lib%s", "lib%s-0",
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"%s" } : new String[] { "%s-0", "%s" };
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UnsatisfiedLinkError linkError = null;
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for (String fmt : nameFormats) {
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try {
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String s = String.format(fmt, name);
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//System.out.println("Trying to load library file " + s);
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Object obj = Native.loadLibrary(s, clazz);
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//System.out.println("Loaded library " + s + " succesfully!");
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return obj;
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} catch (UnsatisfiedLinkError ex) {
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linkError = ex;
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}
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}
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if (reqLib)
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throw new UnsatisfiedLinkError(
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String.format(
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"can't load library %s (%1$s|lib%1$s|lib%1$s-0) with " +
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"-Djna.library.path=%s. Last error:%s",
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name, System.getProperty("jna.library.path"), linkError));
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else {
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System.out.println(String.format(
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"can't load library %s (%1$s|lib%1$s|lib%1$s-0) with " +
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"-Djna.library.path=%s. Last error:%s",
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name, System.getProperty("jna.library.path"), linkError));
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return null;
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}
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}
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public static synchronized LibraryLoader getInstance() {
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if (null == instance) {
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instance = new LibraryLoader();
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instance.preLoadLibs();
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}
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return instance;
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}
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}
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