src/main/java/eu/svjatoslav/meviz/encoder/Encoder.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 java.io.File;
  13 import java.util.List;
  14
  15 import eu.svjatoslav.commons.file.FilePathParser;
  16 import eu.svjatoslav.commons.string.WildCardMatcher;
  17 import eu.svjatoslav.meviz.Module;
  18 import eu.svjatoslav.meviz.encoder.converters.Converter;
  19
  20 public class Encoder implements Module {
  21
  22         public FormatsRegistry encoderRegistry = new FormatsRegistry();
  23
  24         public EncodingOptions encodingOptions;
  25
  26         public EncodingPlan encodingPlan;
  27
  28         CommandlineHandler commandlineHandler = new CommandlineHandler();
  29
  30         /**
  31          * Generate encoding plan
  32          *
  33          * @param sourceFile
  34          *            Source directory of file
  35          */
  36         public void compileEncodingPlan(final File sourceFile) {
  37                 if (!sourceFile.exists()) {
  38                         System.out.println("Error: file \"" + sourceFile.getAbsolutePath()
  39                                         + "\" does not exist.");
  40                         return;
  41                 }
  42
  43                 if (sourceFile.isDirectory()) {
  44                         // handle directory
  45                         for (final File subFile : sourceFile.listFiles())
  46                                 if (subFile.isDirectory()) {
  47                                         if (encodingOptions.recursive)
  48                                                 compileEncodingPlan(subFile);
  49                                 } else
  50                                         compileEncodingPlan(subFile);
  51                 } else if (sourceFile.isFile())
  52                         if (fileMatchesInputPattern(sourceFile)) {
  53
  54                                 // System.out.println("Processing file: " +
  55                                 // file.getAbsolutePath());
  56
  57                                 final String sourceFileExtension = FilePathParser
  58                                                 .getFileExtension(sourceFile);
  59
  60                                 // encode source file into every desired target format
  61                                 for (final String targetFormat : encodingOptions.outputFormats) {
  62
  63                                         // construct target file
  64                                         final File targetFile = getTargetFile(sourceFile,
  65                                                         targetFormat);
  66
  67                                         // System.out.println("target path: " +
  68                                         // targetFilePath.toString());
  69
  70                                         if (!targetFile.exists()) {
  71
  72                                                 final List<eu.svjatoslav.meviz.encoder.converters.Converter> formats = encoderRegistry
  73                                                                 .getEncoders(sourceFileExtension, targetFormat);
  74
  75                                                 if (formats.size() == 0)
  76                                                         System.out
  77                                                                         .println("Error: no encoders found to convert file \""
  78                                                                                         + sourceFile.getAbsolutePath()
  79                                                                                         + "\" into "
  80                                                                                         + targetFormat
  81                                                                                         + " format.");
  82                                                 else if (formats.size() > 1)
  83                                                         System.out
  84                                                                         .println("Error: Encoders piping not yet supported to convert file \""
  85                                                                                         + sourceFile.getAbsolutePath()
  86                                                                                         + "\" into "
  87                                                                                         + targetFormat
  88                                                                                         + " format.");
  89                                                 else {
  90                                                         final Converter chosenFormat = formats.get(0);
  91                                                         final EncodingTask encodingTask = new EncodingTask(
  92                                                                         sourceFile, targetFile, chosenFormat);
  93
  94                                                         if (chosenFormat.isTerminalMandatory())
  95                                                                 encodingTask.setUseTerminal(true);
  96                                                         encodingPlan.scheduleTask(encodingTask);
  97                                                 }
  98                                         }
  99                                 }
 100                         }
 101
 102         }
 103
 104         /**
 105          * @param file
 106          *            single file candidate to potentially be encoded
 107          *
 108          * @return <code>true</code> if file shall be encoded.
 109          */
 110         public boolean fileMatchesInputPattern(final File file) {
 111                 final String fileName = file.getName().toLowerCase();
 112
 113                 for (final String inputPattern : encodingOptions.inputPatterns)
 114                         if (WildCardMatcher.match(fileName, inputPattern.toLowerCase()))
 115                                 return true;
 116
 117                 return false;
 118         }
 119
 120         @Override
 121         public String getDescription() {
 122                 return "Convert between various media formats.";
 123         }
 124
 125         @Override
 126         public String getModuleCommand() {
 127                 return "encode";
 128         }
 129
 130         private File getTargetFile(final File sourceFile, final String targetFormat) {
 131                 final StringBuffer targetFilePath = new StringBuffer();
 132                 targetFilePath.append(sourceFile.getParent());
 133                 targetFilePath.append("/");
 134                 targetFilePath.append(FilePathParser
 135                                 .getFileNameWithoutExtension(sourceFile));
 136                 targetFilePath.append(".");
 137                 targetFilePath.append(targetFormat);
 138
 139                 return new File(targetFilePath.toString());
 140         }
 141
 142         @Override
 143         public void run(final String[] args) {
 144
 145                 // parse incoming commandline arguments
 146                 encodingOptions = commandlineHandler.parseCommandlineArguments(args);
 147
 148                 if (encodingOptions == null) {
 149                         showCommandlineHelp();
 150                         return;
 151                 }
 152
 153                 encodingPlan = new EncodingPlan();
 154
 155                 compileEncodingPlan(encodingOptions.workingDirectory);
 156
 157                 if (!encodingOptions.testOnly)
 158                         try {
 159                                 encodingPlan.execute(encodingOptions);
 160                         } catch (final Exception exception) {
 161                                 exception.printStackTrace();
 162                         }
 163
 164         }
 165
 166         @Override
 167         public void showCommandlineHelp() {
 168                 commandlineHandler.parser.showHelp();
 169                 System.out.println("Example commands:");
 170                 System.out
 171                                 .println("    Convert all MTS files in the current directory into MP4's.");
 172                 System.out.println("        meviz encode -o mp4 -i *.MTS");
 173         }
 174
 175 }