rockbox - My Rockbox tree

diff options

Diffstat (limited to 'apps/plugins/lua/rocklua.c')

0 files changed, 0 insertions, 0 deletions

f='#n48'>48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373

/*
 * iFish -- An iRiver iHP jukebox database creation tool
 *
 * Copyright (c) 2004 Richard "Shred" Körber
 *   http://www.shredzone.net/go/ifish
 *
 *-----------------------------------------------------------------------
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is IFISH.
 *
 * The Initial Developer of the Original Code is
 * Richard "Shred" Körber.
 * Portions created by the Initial Developer are Copyright (C) 2004
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK *****
 */

package net.shredzone.ifish.ltr;

import java.io.*;
import java.util.regex.*;

/**
 * Decodes an MP3 file with old ID3v2.00 tag. The file is compliant to the
 * specifications found at <a href="http://www.id3.org/id3v2-00.txt">www.id3.org</a>.
 * Only ID3 V2.00 up to v2.2.0 is handled here. Newer versions are separately
 * handled in TagMp3v2.
 *
 * @author    Richard Körber &lt;dev@shredzone.de&gt;
 * @version   $Id$
 */
public class TagMp3v200 extends LTRmp3 {
  private int     globalSize;
  private Pattern patGenre;

  private String  artist  = "";
  private String  comment = "";
  private String  title   = "";
  private String  album   = "";
  private String  year    = "";
  private String  track   = "";
  private String  genre   = "";

  /**
   * Create a new TagMp3v200 instance.
   *
   * @param   in      File to be read
   * @throws  FormatDecodeException     Couldn't decode this file
   */
  public TagMp3v200( RandomAccessFile in )
  throws FormatDecodeException {
    super( in );

    patGenre = Pattern.compile( "\\((\\d{1,3})\\).*" );

    try {
      //--- Decode header ---
      if( !readStringLen( 3 ).equals( "ID3" ) ) {
        throw new FormatDecodeException( "not an id3v2 tag" );
      }

      byte version  = in.readByte();
      byte revision = in.readByte();

      if( version!=0x02 || revision==0xFF ) {
        throw new FormatDecodeException( "not an id3v2.2.0 tag" );
      }

      byte flags  = in.readByte();
      globalSize = readSyncsafeInt() + 10;

      //--- Read all frames ---
      Frame frm;
      while( ( frm = readFrame() ) != null ) {
        String type  = frm.getType();
        String[] answer;

        if( type.equals( "TOA" ) || type.equals( "TP1" ) ) {

          answer = frm.getAsStringEnc();
          artist = (answer.length>0 ? answer[0].trim() : "");

        } else if( type.equals( "COM" ) ) {

          answer = frm.getAsStringEnc();
          comment = (answer.length>1 ? answer[1].trim() : "");

        } else if( type.equals( "TT2" ) ) {

          answer = frm.getAsStringEnc();
          title =(answer.length>0 ? answer[0].trim() : "");

        } else if( type.equals( "TAL" ) ) {

          answer = frm.getAsStringEnc();
          album = (answer.length>0 ? answer[0].trim() : "");

        } else if( type.equals( "TYE" ) ) {

          answer = frm.getAsStringEnc();
          year = (answer.length>0 ? answer[0].trim() : "");

        } else if( type.equals( "TRK" ) ) {

          answer = frm.getAsStringEnc();
          track = (answer.length>0 ? answer[0].trim() : "");

        } else if( type.equals( "TCO" ) ) {

          answer = frm.getAsStringEnc();
          if( answer.length>0 ) {
            genre = answer[0].trim();
            Matcher mat  = patGenre.matcher( genre );
            if( mat.matches() ) {
              genre = decodeGenre( Integer.parseInt( mat.group( 1 ) ) );
              if( genre==null ) genre="";
            }
          }
        }
      }

      // Position is now the start of the MP3 data

    } catch( IOException e ) {
      throw new FormatDecodeException( "could not decode file: " + e.toString() );
    }catch( RuntimeException e ) {
      throw new FormatDecodeException( "error decoding file: " + e.toString() );
    }
  }

  /**
   * Get the type of this file. This is usually the compression format
   * itself (e.g. "OGG" or "MP3"). If there are different taggings for
   * this format, the used tag format is appended after a slash (e.g.
   * "MP3/id3v2").
   *
   * @return   The type
   */
  public String getType() {
    return "MP3/id3v2.2.0";
  }

  /**
   * Get the artist.
   *
   * @return   The artist (never null)
   */
  public String getArtist() {
    return artist;
  }

  /**
   * Get the album.
   *
   * @return   The album (never null)
   */
  public String getAlbum() {
    return album;
  }

  /**
   * Get the title.
   *
   * @return   The title (never null)
   */
  public String getTitle() {
    return title;
  }

  /**
   * Get the genre.
   *
   * @return   The genre (never null)
   */
  public String getGenre() {
    return genre;
  }

  /**
   * Get the year.
   *
   * @return   The year (never null)
   */
  public String getYear() {
    return year;
  }

  /**
   * Get the comment.
   *
   * @return   The comment (never null)
   */
  public String getComment() {
    return comment;
  }

  /**
   * Get the track.
   *
   * @return    The track (never null)
   */
  public String getTrack() {
    return track;
  }

  /**
   * Read a tag frame. A Frame object will be returned, or null if no
   * more frames were available.
   *
   * @return    The next frame, or null
   * @throws    IOException  If premature EOF was reached.
   */
  protected Frame readFrame()
  throws IOException {
    if( in.getFilePointer() >= globalSize ) {
      return null;
    }

    //--- Get the type ---
    String type  = readStringLen( 3 );
    if( type.charAt(0)==0 ) {   // Optional padding frame
      in.skipBytes( (int) ( globalSize - in.getFilePointer() ) );// Skip it...
      return null;                      // Return null
    }

    //--- Read the frame ---
    int size     = read3Int();
    
    //--- Read the content ---
    // Stay within reasonable boundaries. If the data part is bigger than
    // 16K, it's not really useful for us, so we will keep the frame empty.
    byte[] data = null;
    if( size<=16384 ) {
      data  = new byte[size];
      int rlen     = in.read( data );
      if( rlen != size ) {
        throw new IOException( "unexpected EOF" );
      }
    }else {
      in.skipBytes( size );
    }

    //--- Return the frame ---
    return new Frame( type, size, data );
  }

  /**
   * Read an ID3v2 3 byte integer. This is a 3 byte big endian value, which is
   * always not syncsafe.
   *
   * @return    The integer read.
   * @throws    IOException  If there were not enough bytes in the file.
   */
  protected int read3Int()
  throws IOException {
    int val  = 0;
    for( int cnt = 3; cnt > 0; cnt-- ) {
      val <<= 8;
      val |= ( in.readByte() & 0xFF );
    }
    return val;
  }

/*--------------------------------------------------------------------*/
  
  /**
   * This class contains a ID3v2.2.0 frame.
   */
  private static class Frame {
    private final String  charset;
    private final String  type;
//    private final int     size;
    private       byte[]  data;

    /**
     * Constructor for the Frame object
     *
     * @param type   Frame type
     * @param size   Frame size
     * @param data   Frame content, may be null
     */
    public Frame( String type, int size, byte[] data ) {
      this.charset = "ISO-8859-1";
      this.type  = type;
// Currently unused...
//      this.size  = size;
      this.data  = data;
    }

    /**
     * Get the type.
     *
     * @return   The type of this Frame
     */
    public String getType() {
      return type;
    }

    /**
     * Return the Frame content as String. This method is to be used for
     * strings without a leading encoding byte. This machine's default
     * encoding will be used instead.
     *
     * @return  Encoded string
     * @throws  FormatDecodeException  Could not read or decode frame
     */
    public String getAsString()
    throws FormatDecodeException {
      if(data==null) return null;
      return new String( data );
    }

    /**
     * Return the Frame content as encoded String. The first byte will
     * contain the encoding type, following the string itself. Multiple
     * strings are null-terminated. An array of all strings found, will
     * be returned.
     *
     * @return  Array of all strings. Might be an empty array!
     * @throws  FormatDecodeException  Could not read or decode frame
     */
    public String[] getAsStringEnc()
    throws FormatDecodeException {
      if(data==null) return new String[0];
      int len        = data.length - 1;
      String result  = "";
      try {
        switch ( data[0] ) {
          case 0x00:
            result = new String( data, 1, len, charset );
            break;
          case 0x01:
            result = new String( data, 1, len, "UTF-16" );
            break;
          default:
            throw new FormatDecodeException( "unknown encoding of frame " + type );
        }
      }catch( UnsupportedEncodingException e ) {
        throw new FormatDecodeException( "Java misses a basic encoding!?" );
      }
      return result.split( "\0" );
    }

  }

}


context:
space:
mode: