Fix issue 53
git-svn-id: http://php-reader.googlecode.com/svn/trunk@213 51a70ab9-7547-0410-9469-37e369ee0574
This commit is contained in:
svollbehr
324
src/Zend/Media/Iso14496/Box/Tfra.php
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324
src/Zend/Media/Iso14496/Box/Tfra.php
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @category Zend
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* @package Zend_Media
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* @subpackage ISO14496
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**#@ @ignore */
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require_once 'Zend/Media/Iso14496/FullBox.php';
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/**#@-*/
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/**
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* The <i>Track Fragment Random Access Box<i> provides entries that contains the location and the presentation time of
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* the random accessible sample. It indicates that the sample in the entry can be random accessed. Note that not every
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* random accessible sample in the track needs to be listed in the table.
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*
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* The absence of this box does not mean that all the samples are sync samples. Random access information in the
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* {@link Zend_Media_Iso14496_Box_Trun}, {@link Zend_Media_Iso14496_Box_Traf} and {@link Zend_Media_Iso14496_Box_Trex}
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* shall be set appropriately regardless of the presence of this box.
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*
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* @category Zend
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* @package Zend_Media
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* @subpackage ISO14496
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* @author Georges-Etienne Legendre <legege@legege.com>
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* @author Sven Vollbehr <sven@vollbehr.eu>
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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final class Zend_Media_Iso14496_Box_Tfra extends Zend_Media_Iso14496_FullBox
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{
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/** @var integer */
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private $_trackId;
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/** @var Array */
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private $_entries = array();
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/**
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* Constructs the class with given parameters and reads box related data
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* from the ISO Base Media file.
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*
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* @param Zend_Io_Reader $reader The reader object.
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* @param Array $options The options array.
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*/
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public function __construct($reader, &$options = array())
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{
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parent::__construct($reader, $options);
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$this->_trackId = $this->_reader->readUInt32BE();
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$reserved = (($tmp = $this->_reader->readUInt32BE()) >> 6) & 0x3ffffff;
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$lengthSizeOfTrafNum = ($tmp >> 4) & 0x3;
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$lengthSizeOfTrunNum = ($tmp >> 2) & 0x3;
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$lengthSizeOfSampleNum = $tmp & 0x3;
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$entryCount = $this->_reader->readUInt32BE();
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for ($i = 0; $i < $entryCount; $i++) {
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$entry = array();
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if ($this->getVersion() == 1) {
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$entry['time'] = $this->_reader->readInt64BE();
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$entry['moofOffset'] = $this->_reader->readInt64BE();
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} else {
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$entry['time'] = $this->_reader->readUInt32BE();
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$entry['moofOffset'] = $this->_reader->readUInt32BE();
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}
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switch ($lengthSizeOfTrafNum) {
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case 0:
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$entry['trafNumber'] = $this->_reader->readUInt8();
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break;
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case 1:
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$entry['trafNumber'] = $this->_reader->readUInt16BE();
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break;
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case 2:
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$entry['trafNumber'] = $this->_reader->readUInt32BE();
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break;
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case 3:
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$entry['trafNumber'] = $this->_reader->readInt64BE();
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break;
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}
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switch ($lengthSizeOfTrunNum) {
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case 0:
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$entry['trunNumber'] = $this->_reader->readUInt8();
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break;
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case 1:
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$entry['trunNumber'] = $this->_reader->readUInt16BE();
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break;
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case 2:
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$entry['trunNumber'] = $this->_reader->readUInt32BE();
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break;
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case 3:
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$entry['trunNumber'] = $this->_reader->readInt64BE();
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break;
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}
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switch ($lengthSizeOfSampleNum) {
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case 0:
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$entry['sampleNumber'] = $this->_reader->readUInt8();
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break;
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case 1:
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$entry['sampleNumber'] = $this->_reader->readUInt16BE();
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break;
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case 2:
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$entry['sampleNumber'] = $this->_reader->readUInt32BE();
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break;
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case 3:
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$entry['sampleNumber'] = $this->_reader->readInt64BE();
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break;
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}
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$this->_entries[] = $entry;
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}
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}
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/**
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* Returns the integer identifying the track ID.
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*
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* @return integer
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*/
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public function getTrackId()
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{
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return $this->_trackId;
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}
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/**
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* Sets the integer identifying the track ID.
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*
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* @param integer $trackId The track ID.
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*/
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public function setTrackId($trackId)
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{
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$this->_trackId = $trackId;
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}
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/**
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* Returns an array of entries. Each entry is an array containing the
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* following keys.
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* o time: is 32 or 64 bits integer that indicates the presentation time of the random access sample in units
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* defined in the {@link Zend_Media_Iso14496_Box_Mdhd} of the associated track.
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* o moofOffset: is 32 or 64 bits integer that gives the offset of the {@link Zend_Media_Iso14496_Box_Moof} used
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* in this entry. Offset is the byte-offset between the beginning of the file and the beginning of the
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* {@link Zend_Media_Iso14496_Box_Moof}.
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* o trafNumber: indicates the {@link Zend_Media_Iso14496_Box_Traf} number that contains the random accessible
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* sample. The number ranges from 1 (the first traf is numbered 1) in each {@link Zend_Media_Iso14496_Box_Moof},
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* o trunNumber: indicates the {@link Zend_Media_Iso14496_Box_Trun} number that contains the random accessible
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* sample. The number ranges from 1 in each {@link Zend_Media_Iso14496_Box_Traf}.
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* o sampleNumber: indicates the sample number that contains the random accessible sample. The number ranges from
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* 1 in each {@link Zend_Media_Iso14496_Box_Trun}.
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*
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* @return Array
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*/
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public function getEntries()
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{
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return $this->_entries;
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}
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/**
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* Sets the array of entries. Each entry must be an array containing the
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* following keys.
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* o time: is 32 or 64 bits integer that indicates the presentation time of the random access sample in units
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* defined in the {@link Zend_Media_Iso14496_Box_Mdhd} of the associated track.
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* o moofOffset: is 32 or 64 bits integer that gives the offset of the {@link Zend_Media_Iso14496_Box_Moof} used
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* in this entry. Offset is the byte-offset between the beginning of the file and the beginning of the
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* {@link Zend_Media_Iso14496_Box_Moof}.
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* o trafNumber: indicates the {@link Zend_Media_Iso14496_Box_Traf} number that contains the random accessible
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* sample. The number ranges from 1 (the first traf is numbered 1) in each {@link Zend_Media_Iso14496_Box_Moof},
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* o trunNumber: indicates the {@link Zend_Media_Iso14496_Box_Trun} number that contains the random accessible
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* sample. The number ranges from 1 in each {@link Zend_Media_Iso14496_Box_Traf}.
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* o sampleNumber: indicates the sample number that contains the random accessible sample. The number ranges from
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* 1 in each {@link Zend_Media_Iso14496_Box_Trun}.
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*
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* @return Array
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*/
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public function setEntries($entries)
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{
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$this->_entries = $entries;
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}
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/**
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* Returns the box heap size in bytes.
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*
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* @return integer
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*/
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public function getHeapSize()
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{
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$lengthSizes = $this->_getLengthSizes();
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return parent::getHeapSize() + 12 +
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count($this->_entries) * ($this->getVersion() == 1 ? 16 : 8) +
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count($this->_entries) * ($lengthSizes['trafNum'] + 1) +
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count($this->_entries) * ($lengthSizes['trunNum'] + 1) +
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count($this->_entries) * ($lengthSizes['sampleNum'] + 1);
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}
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/**
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* Writes the box data.
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*
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* @param Zend_Io_Writer $writer The writer object.
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* @return void
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*/
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protected function _writeData($writer)
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{
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parent::_writeData($writer);
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$lengthSizes = $this->_getLengthSizes();
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$writer->writeUInt32BE($this->_trackId)
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->writeUInt32BE
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(($lengthSizes['trafNum'] << 4) | ($lengthSizes['trunNum'] << 2) | ($lengthSizes['sampleNum']))
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->writeUInt32BE($entryCount = count($this->_entries));
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for ($i = 0; $i < $entryCount; $i++) {
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if ($this->getVersion() == 1) {
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$writer->writeInt64BE($this->_entries[$i]['time'])
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->writeInt64BE($this->_entries[$i]['mediaTime']);
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} else {
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$writer->writeUInt32BE($this->_entries[$i]['time'])
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->writeInt32BE($this->_entries[$i]['moofOffset']);
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}
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switch ($lengthSizes['trafNum']) {
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case 0:
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$writer->writeUInt8($this->_entries[$i]['trafNumber']);
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break;
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case 1:
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$writer->writeUInt16BE($this->_entries[$i]['trafNumber']);
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break;
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case 2:
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$writer->writeUInt32BE($this->_entries[$i]['trafNumber']);
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break;
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case 3:
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$writer->writeInt64BE($this->_entries[$i]['trafNumber']);
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break;
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}
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switch ($lengthSizes['trunNum']) {
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case 0:
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$writer->writeUInt8($this->_entries[$i]['trunNumber']);
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break;
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case 1:
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$writer->writeUInt16BE($this->_entries[$i]['trunNumber']);
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break;
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case 2:
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$writer->writeUInt32BE($this->_entries[$i]['trunNumber']);
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break;
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case 3:
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$writer->writeInt64BE($this->_entries[$i]['trunNumber']);
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break;
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}
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switch ($lengthSizes['sampleNum']) {
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case 0:
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$writer->writeUInt8($this->_entries[$i]['sampleNumber']);
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break;
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case 1:
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$writer->writeUInt16BE($this->_entries[$i]['sampleNumber']);
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break;
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case 2:
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$writer->writeUInt32BE($this->_entries[$i]['sampleNumber']);
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break;
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case 3:
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$writer->writeInt64BE($this->_entries[$i]['sampleNumber']);
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break;
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}
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}
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}
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private function _getLengthSizes()
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{
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$maxTrafNum = $maxTrunNum = $maxSampleNum = 0;
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foreach ($this->entries as $entry) {
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if ($maxTrafNum < $entry['trafNumber']) {
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$maxTrafNum = $entry['trafNumber'];
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}
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if ($maxTrunNum < $entry['trunNumber']) {
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$maxTrunNum = $entry['trunNumber'];
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}
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if ($maxSampleNum < $entry['sampleNumber']) {
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$maxSampleNum = $entry['sampleNumber'];
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}
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}
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return array(
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'trafNum' => $this->_getLengthSizeFromInteger($maxTrafNum),
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'trunNum' => $this->_getLengthSizeFromInteger($maxTrunNum),
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'sampleNum' => $this->_getLengthSizeFromInteger($maxSampleNum)
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);
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}
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private function _getLengthSizeFromInteger($integer)
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{
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if ($integer <= 0xff) {
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return 0;
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} else if ($integer <= 0xffff) {
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return 1;
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} else if ($integer <= 0xffffffff) {
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return 2;
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} else {
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return 3;
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}
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}
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}
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Reference in New Issue
Block a user