diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/POSS.php')
-rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/POSS.php | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/POSS.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/POSS.php new file mode 100644 index 0000000..3de3f27 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/POSS.php @@ -0,0 +1,132 @@ +<?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: POSS.php 105 2008-07-30 14:56:47Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ID3/Frame.php"); +require_once("ID3/Timing.php"); +/**#@-*/ + +/** + * The <i>Position synchronisation frame</i> delivers information to the + * listener of how far into the audio stream he picked up; in effect, it states + * the time offset from the first frame in the stream. There may only be one + * POSS frame in each tag. + * + * @package php-reader + * @subpackage ID3 + * @author Sven Vollbehr <svollbehr@gmail.com> + * @author Ryan Butterfield <buttza@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: 105 $ + */ +final class ID3_Frame_POSS extends ID3_Frame + implements ID3_Timing +{ + /** @var integer */ + private $_format = ID3_Timing::MPEG_FRAMES; + + /** @var integer */ + private $_position; + + /** + * Constructs the class with given parameters and parses object related data. + * + * @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; + + $this->_format = Transform::fromUInt8($this->_data[0]); + $this->_position = Transform::fromUInt32BE(substr($this->_data, 1, 4)); + } + + /** + * Returns the timing format. + * + * @return integer + */ + public function getFormat() { return $this->_format; } + + /** + * Sets the timing format. + * + * @see ID3_Timing + * @param integer $format The timing format. + */ + public function setFormat($format) { $this->_format = $format; } + + /** + * Returns the position where in the audio the listener starts to receive, + * i.e. the beginning of the next frame. + * + * @return integer + */ + public function getPosition() { return $this->_position; } + + /** + * Sets the position where in the audio the listener starts to receive, + * i.e. the beginning of the next frame, using given format. + * + * @param integer $position The position. + * @param integer $format The timing format. + */ + public function setPosition($position, $format = false) + { + $this->_position = $position; + if ($format !== false) + $this->_format = $format; + } + + /** + * Returns the frame raw data. + * + * @return string + */ + public function __toString() + { + $this->setData + (Transform::toUInt8($this->_format) . + Transform::toUInt32BE($this->_position)); + return parent::__toString(); + } +} |