src/main/java/eu/svjatoslav/meviz/encoder/CommandlineHandler.java

   1 /*
   2  * Meviz - Various tools collection to work with multimedia.
   3  * Copyright (C) 2012, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 2 of the GNU General Public License
   7  * as published by the Free Software Foundation.
   8  */
   9
  10 package eu.svjatoslav.meviz.encoder;
  11
  12 import eu.svjatoslav.commons.commandline.parameterparser.Parser;
  13 import eu.svjatoslav.commons.commandline.parameterparser.parameter.DirectoryParameter;
  14 import eu.svjatoslav.commons.commandline.parameterparser.parameter.NullParameter;
  15 import eu.svjatoslav.commons.commandline.parameterparser.parameter.StringParameter;
  16
  17 public class CommandlineHandler {
  18
  19         Parser parser = new Parser();
  20
  21         StringParameter outputFormatParameter = parser
  22                         .createStringParameter("Encoding output format.")
  23                         .addAliases("-o", "--output-format").setMandatory();
  24
  25         NullParameter deinterlaceParameter = parser.createNullParameter(
  26                         "Deinterlace video.").addAliases("--deinterlace", "-d");
  27
  28         NullParameter testParameter = parser.createNullParameter(
  29                         "Simulate file encoding.").addAliases("-t", "--test");
  30
  31         NullParameter recursiveParameter = parser.createNullParameter(
  32                         "Enable recursive mode.").addAliases("-r", "--recursive");
  33
  34         NullParameter forPortableParameter = parser.createNullParameter(
  35                         "Encode for portable player.").addAliases("-p", "--portable");
  36
  37         StringParameter inputPatternParameter = parser
  38                         .createStringParameter("File input pattern.")
  39                         .addAliases("-i", "--input-pattern").setMandatory();
  40
  41         DirectoryParameter workingDirectoryParameter = parser
  42                         .createDirectoryParameter("Working directory.")
  43                         .addAliases("-w", "--working-directory").mustExist();
  44
  45         BitrateParameter videoBitrateParameter = new BitrateParameter(
  46                         "Video bitrate");
  47
  48         public CommandlineHandler() {
  49                 videoBitrateParameter.addAliases("-v", "--video-bitrate");
  50                 parser.addParameter(videoBitrateParameter);
  51         }
  52
  53         /**
  54          * @return {@link EncodingOptions} if commandline arguments were
  55          *         successfully parsed, or <code>null</code> if parsing error
  56          *         occurred.
  57          */
  58         public EncodingOptions parseCommandlineArguments(final String[] args) {
  59
  60                 final EncodingOptions options = new EncodingOptions();
  61
  62                 parser.parse(args);
  63
  64                 options.recursive = recursiveParameter.isParameterSpecified();
  65
  66                 options.deinterlace = deinterlaceParameter.isParameterSpecified();
  67
  68                 options.testOnly = testParameter.isParameterSpecified();
  69
  70                 if (outputFormatParameter.isParameterSpecified())
  71                         options.outputFormats.addAll(outputFormatParameter
  72                                         .getArgumentsAsStrings());
  73
  74                 if (workingDirectoryParameter.isParameterSpecified())
  75                         options.workingDirectory = workingDirectoryParameter
  76                                         .getArgumentsAsFiles().get(0);
  77
  78                 if (inputPatternParameter.isParameterSpecified())
  79                         options.inputPatterns.addAll(inputPatternParameter
  80                                         .getArgumentsAsStrings());
  81
  82                 options.forPortablePlayer = forPortableParameter.isParameterSpecified();
  83
  84                 if (videoBitrateParameter.isParameterSpecified())
  85                         try {
  86                                 options.videoBitrate = videoBitrateParameter.getValue();
  87                         } catch (final Exception e) {
  88                                 System.out
  89                                                 .println("Invalid video bitrate. Valid values are: LOW, MEDIUM, HIGH.");
  90                                 return null;
  91                         }
  92
  93                 return options;
  94         }
  95 }