Package com.meapsoft.composers

Source Code of com.meapsoft.composers.EDLComposer

/*
*  Copyright 2006-2007 Columbia University.
*
*  This file is part of MEAPsoft.
*
*  MEAPsoft is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License version 2 as
*  published by the Free Software Foundation.
*
*  MEAPsoft 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 MEAPsoft; if not, write to the Free Software
*  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
*  02110-1301 USA
*
*  See the file "COPYING" for the text of the license.
*/

package com.meapsoft.composers;

import gnu.getopt.Getopt;

import java.io.IOException;

import com.meapsoft.EDLFile;
import com.meapsoft.ParserException;

/**
* Simply take an existing EDL file and apply the various composer options
* (reverse, gain, etc.) to it. Mostly created for output from visualizers.
*
* @author Douglas Repetto
*/

public class EDLComposer extends Composer
{
  public static String oldDesc = "EDLComposer applies composer options (gain, crossfade, etc.) to an existing .edl file. It is meant to be used to generate output from the visualizers.";

  String outFileName = "visualized.edl";

  EDLFile inEDLFile;

  // int[] featdim = null;
  // ChunkDist dist;
  boolean reverseSort = false;

  boolean debug = false;

  boolean normalizeFeatures = true;

  //@mike: empty constructor just to sniff this guy
  //please don't call this constructor, it will not work
  public EDLComposer()
  {
    initNameAndDescription("EDL Composer", new String(oldDesc));
  }
 
  public EDLComposer(String inEDLFN, String outEDLFN)
  {
    this(new EDLFile(inEDLFN), new EDLFile(outEDLFN));
  }

  public EDLComposer(EDLFile inEDL, EDLFile outEDL)
  {
    this.inEDLFile = inEDL;
    outFile = outEDL;

    if (outFile == null)
      outFile = new EDLFile(outFileName);

    // make sure we write out the edl file
    writeMEAPFile = true;
  }

  public void printUsageAndExit()
  {
    System.out
        .println("Usage: EDLComposer [-options] EDLFile.edl \n\n"
            + "  where options include:\n"
            + "    -o output_file  the file to write the output to (defaults to sorted.edl)\n"
            + "    -g              debug mode (prints out chunk features on each line of output file)\n"
            + "    -r              sort in reverse order");
    printCommandLineOptions('i');
    printCommandLineOptions('d');
    printCommandLineOptions('c');
    System.out.println();
    System.exit(0);
  }

  /**
   * SortComposer constructor. Parses command line arguments
   */
  public EDLComposer(String[] args)
  {
    if (args.length == 0)
      printUsageAndExit();

    // Vector features = new Vector();

    // Parse arguments
    String argString = "d:i:o:c:r:g";
    // featdim = parseFeatDim(args, argString);
    // dist = parseChunkDist(args, argString, featdim);
    parseCommands(args, argString);

    Getopt opt = new Getopt("EDLComposer", args, argString);
    opt.setOpterr(false);

    int c = -1;
    while ((c = opt.getopt()) != -1)
    {
      switch (c)
      {
      case 'o':
        outFileName = opt.getOptarg();
        break;
      case 'r':
        reverseSort = true;
        break;
      case 'g':
        debug = true;
        break;
      case 'd': // already handled above
        break;
      case 'i': // already handled above
        break;
      case 'c': // already handled above
        break;
      case '?':
        printUsageAndExit();
        break;
      default:
        System.out.print("getopt() returned " + c + "\n");
      }
    }

    // parse arguments
    int ind = opt.getOptind();
    if (ind > args.length)
      printUsageAndExit();

    inEDLFile = new EDLFile(args[args.length - 1]);
    outFile = new EDLFile(outFileName);

    System.out.println("Composing " + outFileName + " from "
        + args[args.length - 1] + ".");
  }

  public void setReverseSort(boolean b)
  {
    reverseSort = b;
  }

  public void setNormalizeFeatures(boolean b)
  {
    normalizeFeatures = b;
  }

  public void setup() throws IOException, ParserException
  {
    super.setup();

    if (!inEDLFile.haveReadFile)
      inEDLFile.readFile();

    if (inEDLFile.chunks.size() == 0)
      throw new ParserException(inEDLFile.filename, "No chunks found");

    if (normalizeFeatures)
    {
      // inEDLFile = (EDLFile) inEDLFile.clone();
      inEDLFile.normalizeFeatures();
      inEDLFile.applyFeatureWeights();
    }

    progress.setMaximum(inEDLFile.chunks.size());
  }

  // super complicated compose() method!!!
  public EDLFile compose()
  {
    outFile.chunks = inEDLFile.chunks;

    // outFile now contains some chunks.
    outFile.haveReadFile = true;

    return outFile;
  }

  public static void main(String[] args)
  {
    EDLComposer m = new EDLComposer(args);
    long startTime = System.currentTimeMillis();
    m.run();
    System.out.println("Done. Took "
        + ((System.currentTimeMillis() - startTime) / 1000.0) + "s");
    System.exit(0);
  }
}
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