diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/TimecodeIndex.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/TimecodeIndex.php | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/TimecodeIndex.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/TimecodeIndex.php deleted file mode 100644 index 943a353..0000000 --- a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/TimecodeIndex.php +++ /dev/null @@ -1,181 +0,0 @@ -<?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 ASF - * @copyright Copyright (c) 2008 The PHP Reader Project Workgroup - * @license http://code.google.com/p/php-reader/wiki/License New BSD License - * @version $Id: TimecodeIndex.php 108 2008-09-05 17:00:05Z svollbehr $ - */ - -/**#@+ @ignore */ -require_once("ASF/Object.php"); -/**#@-*/ - -/** - * This top-level ASF object supplies timecode indexing information for the - * streams of an ASF file. It includes stream-specific indexing information - * based on the timecodes found in the file. If the <i>Timecode Index Object</i> - * is used, it is recommended that timecodes be stored as a <i>Payload Extension - * System</i> on the appropriate stream. It is also recommended that every - * timecode appearing in the ASF file have a corresponging index entry. - * - * The index is designed to be broken into blocks to facilitate storage that is - * more space-efficient by using 32-bit offsets relative to a 64-bit base. That - * is, each index block has a full 64-bit offset in the block header that is - * added to the 32-bit offsets found in each index entry. If a file is larger - * than 2^32 bytes, then multiple index blocks can be used to fully index the - * entire large file while still keeping index entry offsets at 32 bits. - * - * To locate an object with a particular timecode in an ASF file, one would - * typically look through the <i>Timecode Index Object</i> in blocks of the - * appropriate range and try to locate the nearest possible timecode. The - * corresponding <i>Offset</i> field values of the <i>Index Entry</i> are byte - * offsets that, when combined with the <i>Block Position</i> value of the Index - * Block, indicate the starting location in bytes of an ASF Data Packet relative - * to the start of the first ASF Data Packet in the file. - * - * Any ASF file containing a <i>Timecode Index Object</i> shall also contain a - * <i>Timecode Index Parameters Object</i> in its - * {@link ASF_Object_Header ASF Header}. - * - * @package php-reader - * @subpackage ASF - * @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: 108 $ - */ -final class ASF_Object_TimecodeIndex extends ASF_Object -{ - /** - * Indicates that the index type is Nearest Past Data Packet. The Nearest - * Past Data Packet indexes point to the data packet whose presentation time - * is closest to the index entry time. - */ - const NEAREST_PAST_DATA_PACKET = 1; - - /** - * Indicates that the index type is Nearest Past Media. The Nearest Past - * Object indexes point to the closest data packet containing an entire object - * or first fragment of an object. - */ - const NEAREST_PAST_MEDIA = 2; - - /** - * Indicates that the index type is Nearest Past Cleanpoint. The Nearest Past - * Cleanpoint indexes point to the closest data packet containing an entire - * object (or first fragment of an object) that has the Cleanpoint Flag set. - * - * Nearest Past Cleanpoint is the most common type of index. - */ - const NEAREST_PAST_CLEANPOINT = 3; - - /** @var Array */ - private $_indexSpecifiers = array(); - - /** @var Array */ - private $_indexBlocks = array(); - - /** - * Constructs the class with given parameters and reads object related data - * from the ASF file. - * - * @param Reader $reader The reader object. - * @param Array $options The options array. - */ - public function __construct($reader, &$options = array()) - { - parent::__construct($reader, $options); - - $this->_reader->skip(4); - $indexSpecifiersCount = $this->_reader->readUInt16LE(); - $indexBlocksCount = $this->_reader->readUInt32LE(); - for ($i = 0; $i < $indexSpecifiersCount; $i++) - $this->_indexSpecifiers[] = array - ("streamNumber" => $this->_reader->readUInt16LE(), - "indexType" => $this->_reader->readUInt16LE()); - for ($i = 0; $i < $indexBlocksCount; $i++) { - $indexEntryCount = $this->_reader->readUInt32LE(); - $timecodeRange = $this->_reader->readUInt16LE(); - $blockPositions = array(); - for ($i = 0; $i < $indexSpecifiersCount; $i++) - $blockPositions[] = $this->_reader->readInt64LE(); - $indexEntries = array(); - for ($i = 0; $i < $indexEntryCount; $i++) { - $timecode = $this->_reader->readUInt32LE(); - $offsets = array(); - for ($i = 0; $i < $indexSpecifiersCount; $i++) - $offsets[] = $this->_reader->readUInt32LE(); - $indexEntries[] = array - ("timecode" => $timecode, - "offsets" => $offsets); - } - $this->_indexBlocks[] = array - ("timecodeRange" => $timecodeRange, - "blockPositions" => $blockPositions, - "indexEntries" => $indexEntries); - } - } - - /** - * Returns an array of index specifiers. Each entry consists of the following - * keys. - * - * o streamNumber -- Specifies the stream number that the <i>Index - * Specifiers</i> refer to. Valid values are between 1 and 127. - * - * o indexType -- Specifies the type of index. - * - * @return Array - */ - public function getIndexSpecifiers() { return $this->_indexSpecifiers; } - - /** - * Returns an array of index entries. Each entry consists of the following - * keys. - * - * o timecodeRange -- Specifies the timecode range for this block. - * Subsequent blocks must contain range numbers greater than or equal to - * this one. - * - * o blockPositions -- Specifies a list of byte offsets of the beginnings of - * the blocks relative to the beginning of the first Data Packet (for - * example, the beginning of the Data Object + 50 bytes). - * - * o indexEntries -- An array that consists of the following keys - * o timecode -- This is the 4-byte timecode for these entries. - * o offsets -- Specifies the offset. An offset value of 0xffffffff - * indicates an invalid offset value. - * - * @return Array - */ - public function getIndexBlocks() { return $this->_indexBlocks; } -} |