diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/StreamProperties.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/StreamProperties.php | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/StreamProperties.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/StreamProperties.php new file mode 100644 index 0000000..8c42d57 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/StreamProperties.php @@ -0,0 +1,288 @@ +<?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: StreamProperties.php 102 2008-06-23 20:41:20Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ASF/Object.php"); +/**#@-*/ + +/** + * The <i>Stream Properties Object</i> defines the specific properties and + * characteristics of a digital media stream. This object defines how a digital + * media stream within the <i>Data Object</i> is interpreted, as well as the + * specific format (of elements) of the <i>Data Packet</i> itself. + * + * Whereas every stream in an ASF presentation, including each stream in a + * mutual exclusion relationship, must be represented by a <i>Stream Properties + * Object</i>, in certain cases, this object might be found embedded in the + * <i>Extended Stream Properties Object</i>. + * + * @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: 102 $ + */ +final class ASF_Object_StreamProperties extends ASF_Object +{ + /** + * Indicates, if set, that the data contained in this stream is encrypted and + * will be unreadable unless there is a way to decrypt the stream. + */ + const ENCRYPTED_CONTENT = 0x8000; + + const AUDIO_MEDIA = "f8699e40-5b4d-11cf-a8fd-00805f5c442b"; + const VIDEO_MEDIA = "bc19efc0-5b4d-11cf-a8fd-00805f5c442b"; + const COMMAND_MEDIA = "59dacfc0-59e6-11d0-a3ac-00a0c90348f6"; + const JFIF_MEDIA = "b61be100-5b4e-11cf-a8fD-00805f5c442b"; + const DEGRADABLE_JPEG_MEDIA = "35907dE0-e415-11cf-a917-00805f5c442b"; + const FILE_TRANSFER_MEDIA = "91bd222c-f21c-497a-8b6d-5aa86bfc0185"; + const BINARY_MEDIA = "3afb65e2-47ef-40f2-ac2c-70a90d71d343"; + + const NO_ERROR_CORRECTION = "20fb5700-5b55-11cf-a8fd-00805f5c442b"; + const AUDIO_SPREAD = "bfc3cd50-618f-11cf-8bb2-00aa00b4e220"; + + /** @var string */ + private $_streamType; + + /** @var string */ + private $_errorCorrectionType; + + /** @var integer */ + private $_timeOffset; + + /** @var integer */ + private $_flags; + + /** @var Array */ + private $_typeSpecificData = array(); + + /** @var Array */ + private $_errorCorrectionData = 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->_streamType = $this->_reader->readGUID(); + $this->_errorCorrectionType = $this->_reader->readGUID(); + $this->_timeOffset = $this->_reader->readInt64LE(); + $typeSpecificDataLength = $this->_reader->readUInt32LE(); + $errorCorrectionDataLength = $this->_reader->readUInt32LE(); + $this->_flags = $this->_reader->readUInt16LE(); + $this->_reader->skip(4); + switch ($this->_streamType) { + case self::AUDIO_MEDIA: + $this->_typeSpecificData = array + ("codecId" => $this->_reader->readUInt16LE(), + "numberOfChannels" => $this->_reader->readUInt16LE(), + "samplesPerSecond" => $this->_reader->readUInt32LE(), + "avgNumBytesPerSecond" => $this->_reader->readUInt32LE(), + "blockAlignment" => $this->_reader->readUInt16LE(), + "bitsPerSample" => $this->_reader->readUInt16LE()); + $codecSpecificDataSize = $this->_reader->readUInt16LE(); + $this->_typeSpecificData["codecSpecificData"] = + $this->_reader->read($codecSpecificDataSize); + break; + case self::VIDEO_MEDIA: + $this->_typeSpecificData = array + ("encodedImageWidth" => $this->_reader->readUInt32LE(), + "encodedImageHeight" => $this->_reader->readUInt32LE(), + "reservedFlags" => $this->_reader->readInt8()); + $this->_reader->skip(2); + $formatDataSize = $this->_reader->readUInt32LE(); + $this->_typeSpecificData = array_merge + ($this->_typeSpecificData, array + ("imageWidth" => $this->_reader->readUInt32LE(), + "imageHeight" => $this->_reader->readUInt32LE(), + "reserved" => $this->_reader->readUInt16LE(), + "bitsPerPixelCount" => $this->_reader->readUInt16LE(), + "compressionId" => $this->_reader->readUInt32LE(), + "imageSize" => $this->_reader->readUInt32LE(), + "horizontalPixelsPerMeter" => $this->_reader->readUInt32LE(), + "verticalPixelsPerMeter" => $this->_reader->readUInt32LE(), + "colorsUsedCount" => $this->_reader->readUInt32LE(), + "importantColorsCount" => $this->_reader->readUInt32LE(), + "codecSpecificData" => $this->_reader->read($formatDataSize - 38))); + break; + case self::JFIF_MEDIA: + $this->_typeSpecificData = array + ("imageWidth" => $this->_reader->readUInt32LE(), + "imageHeight" => $this->_reader->readUInt32LE(), + "reserved" => $this->_reader->readUInt32LE()); + break; + case self::DEGRADABLE_JPEG_MEDIA: + $this->_typeSpecificData = array + ("imageWidth" => $this->_reader->readUInt32LE(), + "imageHeight" => $this->_reader->readUInt32LE(), + $this->_reader->readUInt16LE(), + $this->_reader->readUInt16LE(), + $this->_reader->readUInt16LE()); + $interchangeDataSize = $this->_reader->readUInt16LE(); + if ($interchangeDataSize == 0) + $interchangeDataSize++; + $this->_typeSpecificData["interchangeData"] = + $this->_reader->read($interchangeDataSize); + break; + case self::FILE_TRANSFER_MEDIA: + case self::BINARY_MEDIA: + $this->_typeSpecificData = array + ("majorMediaType" => $this->_reader->getGUID(), + "mediaSubtype" => $this->_reader->getGUID(), + "fixedSizeSamples" => $this->_reader->readUInt32LE(), + "temporalCompression" => $this->_reader->readUInt32LE(), + "sampleSize" => $this->_reader->readUInt32LE(), + "formatType" => $this->_reader->getGUID()); + $formatDataSize = $this->_reader->readUInt32LE(); + $this->_typeSpecificData["formatData"] = + $this->_reader->read($formatDataSize); + break; + case self::COMMAND_MEDIA: + default: + $this->_reader->skip($typeSpecificDataLength); + } + switch ($this->_errorCorrectionType) { + case self::AUDIO_SPREAD: + $this->_errorCorrectionData = array + ("span" => $this->_reader->readInt8(), + "virtualPacketLength" => $this->_reader->readUInt16LE(), + "virtualChunkLength" => $this->_reader->readUInt16LE()); + $silenceDataSize = $this->_reader->readUInt16LE(); + $this->_errorCorrectionData["silenceData"] = + $this->_reader->read($silenceDataSize); + break; + case self::NO_ERROR_CORRECTION: + default: + $this->_reader->skip($errorCorrectionDataLength); + } + } + + /** + * Returns the number of this stream. 0 is an invalid stream. Valid values are + * between 1 and 127. The numbers assigned to streams in an ASF presentation + * may be any combination of unique values; parsing logic must not assume that + * streams are numbered sequentially. + * + * @return integer + */ + public function getStreamNumber() { return $this->_flags & 0x3f; } + + /** + * Returns the type of the stream (for example, audio, video, and so on). + * + * @return string + */ + public function getStreamType() { return $this->_streamType; } + + /** + * Returns the error correction type used by this digital media stream. For + * streams other than audio, this value should be set to NO_ERROR_CORRECTION. + * For audio streams, this value should be set to AUDIO_SPREAD. + * + * @return string + */ + public function getErrorCorrectionType() + { + return $this->_errorCorrectionType; + } + + /** + * Returns the presentation time offset of the stream in 100-nanosecond units. + * The value of this field is added to all of the timestamps of the samples in + * the stream. This value shall be equal to the send time of the first + * interleaved packet in the data section. The value of this field is + * typically 0. It is non-zero in the case when an ASF file is edited and it + * is not possible for the editor to change the presentation times and send + * times of ASF packets. Note that if more than one stream is present in an + * ASF file the offset values of all stream properties objects must be equal. + * + * @return integer + */ + public function getTimeOffset() { return $this->_timeOffset; } + + /** + * 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 field. + * + * @return integer + */ + public function getFlags() { return $this->_flags; } + + /** + * Returns type-specific format data. The structure for the <i>Type-Specific + * Data</i> field is determined by the value stored in the <i>Stream Type</i> + * field. + * + * The type-specific data is returned as key-value pairs of an associate + * array. + * + * @return Array + */ + public function getTypeSpecificData() { return $this->_typeSpecificData; } + + /** + * Returns data specific to the error correction type. The structure for the + * <i>Error Correction Data</i> field is determined by the value stored in the + * <i>Error Correction Type</i> field. For example, an audio data stream might + * need to know how codec chunks were redistributed, or it might need a sample + * of encoded silence. + * + * The error correction type-specific data is returned as key-value pairs of + * an associate array. + * + * @return integer + */ + public function getErrorCorrectionData() + { + return $this->_errorCorrectionData; + } +} |