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 (encodingOptions.terminal
  95                                                                         || chosenFormat.isTerminalMandatory())
  96                                                                 encodingTask.setUseTerminal(true);
  97                                                         encodingPlan.scheduleTask(encodingTask);
  98                                                 }
  99                                         }
 100                                 }
 101                         }
 102
 103         }
 104
 105         /**
 106          * @param file
 107          *            single file candidate to potentially be encoded
 108          *
 109          * @return <code>true</code> if file shall be encoded.
 110          */
 111         public boolean fileMatchesInputPattern(final File file) {
 112                 final String fileName = file.getName().toLowerCase();
 113
 114                 for (final String inputPattern : encodingOptions.inputPatterns)
 115                         if (WildCardMatcher.match(fileName, inputPattern.toLowerCase()))
 116                                 return true;
 117
 118                 return false;
 119         }
 120
 121         @Override
 122         public String getDescription() {
 123                 return "Convert between various media formats.";
 124         }
 125
 126         @Override
 127         public String getModuleCommand() {
 128                 return "encode";
 129         }
 130
 131         private File getTargetFile(final File sourceFile, final String targetFormat) {
 132                 final StringBuffer targetFilePath = new StringBuffer();
 133                 targetFilePath.append(sourceFile.getParent());
 134                 targetFilePath.append("/");
 135                 targetFilePath.append(FilePathParser
 136                                 .getFileNameWithoutExtension(sourceFile));
 137                 targetFilePath.append(".");
 138                 targetFilePath.append(targetFormat);
 139
 140                 return new File(targetFilePath.toString());
 141         }
 142
 143         @Override
 144         public void run(final String[] args) {
 145
 146                 // parse incoming commandline arguments
 147                 encodingOptions = commandlineHandler.parseCommandlineArguments(args);
 148
 149                 if (encodingOptions == null) {
 150                         showCommandlineHelp();
 151                         return;
 152                 }
 153
 154                 encodingPlan = new EncodingPlan();
 155
 156                 compileEncodingPlan(encodingOptions.workingDirectory);
 157
 158                 if (!encodingOptions.testOnly)
 159                         try {
 160                                 encodingPlan.execute(encodingOptions);
 161                         } catch (final Exception exception) {
 162                                 exception.printStackTrace();
 163                         }
 164
 165         }
 166
 167         @Override
 168         public void showCommandlineHelp() {
 169                 commandlineHandler.parser.showHelp();
 170                 System.out.println("Example commands:");
 171                 System.out
 172                                 .println("    Convert all MTS files in the current directory into MP4's.");
 173                 System.out.println("        meviz encode -o mp4 -i *.MTS");
 174         }
 175
 176 }