Java tutorial
/* * PS3 Media Server, for streaming any medias to your PS3. * Copyright (C) 2008 A.Brochard * * 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; version 2 * of the License only. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package net.pms.encoders; import com.jgoodies.forms.builder.PanelBuilder; import com.jgoodies.forms.layout.CellConstraints; import com.jgoodies.forms.layout.FormLayout; import net.pms.Messages; import net.pms.configuration.PmsConfiguration; import net.pms.dlna.DLNAMediaInfo; import net.pms.dlna.DLNAResource; import net.pms.formats.Format; import net.pms.io.OutputParams; import net.pms.io.ProcessWrapper; import net.pms.io.ProcessWrapperImpl; import net.pms.network.HTTPResource; import net.pms.util.PlayerUtil; import javax.swing.*; import java.awt.*; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class FFmpegAudio extends FFmpegVideo { public static final String ID = "ffmpegaudio"; private final PmsConfiguration configuration; private Logger logger = LoggerFactory.getLogger(FFmpegAudio.class); // should be private @Deprecated JCheckBox noresample; public FFmpegAudio(PmsConfiguration configuration) { super(configuration); this.configuration = configuration; } @Override public JComponent config() { FormLayout layout = new FormLayout("left:pref, 0:grow", "p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, 0:grow"); PanelBuilder builder = new PanelBuilder(layout); CellConstraints cc = new CellConstraints(); JComponent cmp = builder.addSeparator("Audio settings", cc.xyw(2, 1, 1)); cmp = (JComponent) cmp.getComponent(0); cmp.setFont(cmp.getFont().deriveFont(Font.BOLD)); noresample = new JCheckBox(Messages.getString("TrTab2.22")); noresample.setContentAreaFilled(false); noresample.setSelected(configuration.isAudioResample()); noresample.addItemListener(new ItemListener() { public void itemStateChanged(ItemEvent e) { configuration.setAudioResample(e.getStateChange() == ItemEvent.SELECTED); } }); builder.add(noresample, cc.xy(2, 3)); return builder.getPanel(); } @Override public PlayerPurpose getPurpose() { return PlayerPurpose.AUDIO_FILE_PLAYER; } @Override public String id() { return ID; } @Override public boolean isTimeSeekable() { return true; } public boolean avisynth() { return false; } @Override public String name() { return "FFmpeg Audio"; } @Override public int type() { return Format.AUDIO; } @Override @Deprecated public String[] args() { // unused: kept for backwards compatibility return new String[] { "-f", "s16be", "-ar", "48000" }; } @Override public String mimeType() { return HTTPResource.AUDIO_TRANSCODE; } /** * Returns a list of <code>String</code>s representing ffmpeg output * options (i.e. options that define the output file's format, * bitrate and sample rate) compatible with the renderer's * <code>TranscodeAudio</code> profile. * * @param dlna The DLNA resource representing the file being transcoded. * @param media the media metadata for the file being streamed. May contain * unset/null values (e.g. for web streams). * @param params The {@link net.pms.io.OutputParams} context object used to * store miscellaneous parameters for this request. * @return a {@link List} of <code>String</code>s representing the * FFmpeg output parameters for the renderer according * to its <code>TranscodeAudio</code> profile. * @since 1.90.0 */ protected List<String> getAudioTranscodeOptions(DLNAResource dlna, DLNAMediaInfo media, OutputParams params) { List<String> options = new ArrayList<String>(); if (params.mediaRenderer.isTranscodeToMP3()) { options.add("-f"); options.add("mp3"); options.add("-ab"); options.add("320000"); } else if (params.mediaRenderer.isTranscodeToWAV()) { options.add("-f"); options.add("wav"); } else { // default: LPCM options.add("-f"); options.add("s16be"); // same as -f wav, but without a WAV header } if (configuration.isAudioResample()) { if (params.mediaRenderer.isTranscodeAudioTo441()) { options.add("-ar"); options.add("44100"); } else { options.add("-ar"); options.add("48000"); } } return options; } @Override public ProcessWrapper launchTranscode(DLNAResource dlna, DLNAMediaInfo media, OutputParams params) throws IOException { final String filename = dlna.getSystemName(); params.maxBufferSize = configuration.getMaxAudioBuffer(); params.waitbeforestart = 2000; params.manageFastStart(); int nThreads = configuration.getNumberOfCpuCores(); List<String> cmdList = new ArrayList<String>(); cmdList.add(executable()); cmdList.addAll(getGlobalOptions(logger)); if (params.timeseek > 0) { cmdList.add("-ss"); cmdList.add("" + params.timeseek); } // decoder threads cmdList.add("-threads"); cmdList.add("" + nThreads); cmdList.add("-i"); cmdList.add(filename); // encoder threads cmdList.add("-threads"); cmdList.add("" + nThreads); if (params.timeend > 0) { cmdList.add("-t"); cmdList.add("" + params.timeend); } // Add the output options (-f, -ab, -ar) cmdList.addAll(getAudioTranscodeOptions(dlna, media, params)); cmdList.add("pipe:"); String[] cmdArray = new String[cmdList.size()]; cmdList.toArray(cmdArray); cmdArray = finalizeTranscoderArgs(filename, dlna, media, params, cmdArray); ProcessWrapperImpl pw = new ProcessWrapperImpl(cmdArray, params); pw.runInNewThread(); return pw; } @Override public boolean isCompatible(DLNAResource resource) { return PlayerUtil.isAudio(resource, Format.Identifier.FLAC) || PlayerUtil.isAudio(resource, Format.Identifier.M4A) || PlayerUtil.isAudio(resource, Format.Identifier.OGG) || PlayerUtil.isAudio(resource, Format.Identifier.WAV); } }