ws.schild.jave.DefaultFFMPEGLocator Maven / Gradle / Ivy

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The JAVE (Java Audio Video Encoder) library is Java wrapper on the ffmpeg project. Developers can take take advantage of JAVE2 to transcode audio and video files from a format to another. In example you can transcode an AVI file to a MPEG one, you can change a DivX video stream into a (youtube like) Flash FLV one, you can convert a WAV audio file to a MP3 or a Ogg Vorbis one, you can separate and transcode audio and video tracks, you can resize videos, changing their sizes and proportions and so on. Many other formats, containers and operations are supported by JAVE2.

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/*
 * JAVE - A Java Audio/Video Encoder (based on FFMPEG) Copyright (C) 2008-2009 Carlo Pelliccia (www.sauronsoftware.it) 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 .
 */
package ws.schild.jave;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * The default ffmpeg executable locator, which exports on disk the ffmpeg
 * executable bundled with the library distributions. It should work both for
 * windows and many linux distributions. If it doesn't, try compiling your own
 * ffmpeg executable and plug it in JAVE with a custom {@link FFMPEGLocator}.
 *
 * @author Carlo Pelliccia
 */
public class DefaultFFMPEGLocator extends FFMPEGLocator {

    private final static Log LOG = LogFactory.getLog(FFMPEGExecutor.class);

    /**
     * Trace the version of the bundled ffmpeg executable. It's a counter: every
     * time the bundled ffmpeg change it is incremented by 1.
     */
    private static final String MY_EXE_VERSION = "2.4.2";

    /**
     * The ffmpeg executable file path.
     */
    private final String path;

    /**
     * It builds the default FFMPEGLocator, exporting the ffmpeg executable on a
     * temp file.
     */
    public DefaultFFMPEGLocator() {
        String os = System.getProperty("os.name").toLowerCase();
        boolean isWindows = os.contains("windows");
        boolean isMac = os.contains("mac");

        // Dir Folder
        File dirFolder = new File(System.getProperty("java.io.tmpdir"), "jave/");
        if (!dirFolder.exists())
        {
            dirFolder.mkdirs();
        }

        // -----------------ffmpeg executable export on disk.-----------------------------
        String suffix = isWindows ? ".exe" : (isMac ? "-osx" : "");
        String arch = System.getProperty("os.arch");

        //File
        File ffmpegFile = new File(dirFolder, "ffmpeg-" + arch +"-"+MY_EXE_VERSION+ suffix);
        LOG.debug("Executable path: "+ffmpegFile.getAbsolutePath());

        //Check the version of existing .exe file
        if (ffmpegFile.exists())
        {
            // OK, already present
        }
        else
        {
            copyFile("ffmpeg-" + arch + suffix, ffmpegFile);
        }

        // Need a chmod?
        if (!isWindows)
        {
            try
            {
                Runtime.getRuntime().exec(new String[]
                {
                    "/bin/chmod", "755", ffmpegFile.getAbsolutePath()
                });
            } catch (IOException e)
            {
                LOG.error(e);
            }
        }

        // Everything seems okay
        path = ffmpegFile.getAbsolutePath();
        LOG.debug("ffmpeg executable found: "+path);
    }

    @Override
    protected String getFFMPEGExecutablePath() {
        return path;
    }

    /**
     * Copies a file bundled in the package to the supplied destination.
     *
     * @param path The name of the bundled file.
     * @param dest The destination.
     * @throws RuntimeException If an unexpected error occurs.
     */
    private void copyFile(String path, File dest) {
        copy(getClass().getResourceAsStream("native/" + path), dest.getAbsolutePath());
    }

    /**
     * Copy a file from source to destination.
     *
     * @param source The name of the bundled file.
     * @param destination the destination
     * @return True if succeeded , False if not
     */
    private boolean copy(InputStream source, String destination) {
        boolean success = true;

        try
        {
            Files.copy(source, Paths.get(destination), StandardCopyOption.REPLACE_EXISTING);
        } catch (IOException ex)
        {
            LOG.warn("Cannot write file " + destination, ex);
            success = false;
        }

        return success;
    }
}