Package net.pms.encoders

Source Code of net.pms.encoders.FFmpegAudio

/*
* 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);
  }
}
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