com.adavr.player.Launcher.java Source code

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Here is the source code for com.adavr.player.Launcher.java

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/*
 * Copyright (C) 2015 Shotaro Uchida <fantom@xmaker.mx>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.adavr.player;

import com.adavr.player.hmd.HMDRenderContextFactory;
import com.adavr.player.vlc.VLCApplication;
import org.apache.commons.cli.BasicParser;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;

/**
 *
 * @author Shotaro Uchida <fantom@xmaker.mx>
 */
public class Launcher {

    private static final Options OPTIONS = createOptions();

    public static void main(String[] args) {
        CommandLine cl;
        try {
            cl = new BasicParser().parse(OPTIONS, args);
        } catch (ParseException ex) {
            showUsage();
            return;
        }

        if (cl.hasOption("help")) {
            showUsage();
            return;
        }

        ApplicationContext appCtx = (ApplicationContext) loadClass(cl.getOptionValue("context"));
        if (appCtx == null) {
            System.out.println("Failed to load App Context");
            appCtx = new VLCApplication();
        }
        if (cl.hasOption("source")) {
            String src = cl.getOptionValue("source");
            appCtx.getMediaContext().setMedia(src);
        }

        Application application = new Application(appCtx);
        application.setVSync(cl.hasOption("vsync"));
        if (cl.hasOption("factory")) {
            String className = cl.getOptionValue("factory");
            HMDRenderContextFactory factory = (HMDRenderContextFactory) loadClass(className);
            if (factory != null) {
                application.setHMDRenderContextFactory(factory);
            }
        }

        application.run();
    }

    private static void showUsage() {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp("adavr", OPTIONS);
    }

    private static Options createOptions() {
        Options options = new Options();
        options.addOption(OptionBuilder.withLongOpt("source").withArgName("file").hasArgs(1)
                .withDescription("Select source file").create("s"));
        options.addOption(OptionBuilder.withLongOpt("context").withArgName("class").hasArgs(1).create("c"));
        options.addOption(OptionBuilder.withLongOpt("factory").withArgName("class").hasArgs(1).create("f"));
        options.addOption(OptionBuilder.withLongOpt("help").withDescription("Show usage").create("h"));
        options.addOption(OptionBuilder.withLongOpt("vsync").withDescription("Enable Vsync").create());
        return options;
    }

    public static Object loadClass(String className) {
        try {
            Class clazz = Class.forName(className);
            return clazz.newInstance();
        } catch (Exception ex) {
            return null;
        }
    }
}