diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Header.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Header.php | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Header.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Header.php new file mode 100644 index 0000000..3190b00 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Header.php @@ -0,0 +1,173 @@ +<?php +/** + * PHP Reader Library + * + * Copyright (c) 2008 The PHP Reader Project Workgroup. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * - Neither the name of the project workgroup nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * @package php-reader + * @subpackage ID3 + * @copyright Copyright (c) 2008 The PHP Reader Project Workgroup + * @license http://code.google.com/p/php-reader/wiki/License New BSD License + * @version $Id: Header.php 107 2008-08-03 19:09:16Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ID3/Object.php"); +/**#@-*/ + +/** + * The first part of the ID3v2 tag is the 10 byte tag header. The header + * contains information about the tag version and options. + * + * @package php-reader + * @subpackage ID3 + * @author Sven Vollbehr <svollbehr@gmail.com> + * @copyright Copyright (c) 2008 The PHP Reader Project Workgroup + * @license http://code.google.com/p/php-reader/wiki/License New BSD License + * @version $Rev: 107 $ + */ +final class ID3_Header extends ID3_Object +{ + /** A flag to denote whether or not unsynchronisation is applied on all + frames */ + const UNSYNCHRONISATION = 128; + + /** A flag to denote whether or not the header is followed by an extended + header */ + const EXTENDEDHEADER = 64; + + /** A flag used as an experimental indicator. This flag shall always be set + when the tag is in an experimental stage. */ + const EXPERIMENTAL = 32; + + /** + * A flag to denote whether a footer is present at the very end of the tag. + * + * @since ID3v2.4.0 + */ + const FOOTER = 16; + + /** @var integer */ + private $_version = 4.0; + + /** @var integer */ + private $_flags = 0; + + /** @var integer */ + private $_size; + + /** + * Constructs the class with given parameters and reads object related data + * from the ID3v2 tag. + * + * @param Reader $reader The reader object. + * @param Array $options The options array. + */ + public function __construct($reader = null, &$options = array()) + { + parent::__construct($reader, $options); + + if ($reader === null) + return; + + $this->_version = $options["version"] = + $this->_reader->readInt8() + $this->_reader->readInt8() / 10; + $this->_flags = $this->_reader->readInt8(); + $this->_size = $this->decodeSynchsafe32($this->_reader->readUInt32BE()); + } + + /** + * Returns the tag version number. The version number is in the form of + * major.revision. + * + * @return integer + */ + public function getVersion() { return $this->_version; } + + /** + * Sets the tag version number. Supported version numbers are 3.0 and 4.0 + * for ID3v2.3.0 and ID3v2.4.0 standards, respectively. + * + * @param integer $version The tag version number in the form of + * major.revision. + */ + public function setVersion($version) + { + $this->setOption("version", $this->_version = $version); + } + + /** + * Checks whether or not the flag is set. Returns <var>true</var> if the flag + * is set, <var>false</var> otherwise. + * + * @param integer $flag The flag to query. + * @return boolean + */ + public function hasFlag($flag) { return ($this->_flags & $flag) == $flag; } + + /** + * Returns the flags byte. + * + * @return integer + */ + public function getFlags() { return $this->_flags; } + + /** + * Sets the flags byte. + * + * @param string $flags The flags byte. + */ + public function setFlags($flags) { $this->_flags = $flags; } + + /** + * Returns the tag size, excluding the header and the footer. + * + * @return integer + */ + public function getSize() { return $this->_size; } + + /** + * Sets the tag size, excluding the header and the footer. Called + * automatically upon tag generation to adjust the tag size. + * + * @param integer $size The size of the tag, in bytes. + */ + public function setSize($size) { $this->_size = $size; } + + /** + * Returns the header/footer raw data without the identifier. + * + * @return string + */ + public function __toString() + { + return Transform::toInt8(floor($this->_version)) . + Transform::toInt8(($this->_version - floor($this->_version)) * 10) . + Transform::toInt8($this->_flags) . + Transform::toUInt32BE($this->encodeSynchsafe32($this->_size)); + } +} |