diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVA2.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVA2.php | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVA2.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVA2.php deleted file mode 100644 index bfdd287..0000000 --- a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVA2.php +++ /dev/null @@ -1,217 +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 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: RVA2.php 105 2008-07-30 14:56:47Z svollbehr $ - * @since ID3v2.4.0 - */ - -/**#@+ @ignore */ -require_once("ID3/Frame.php"); -/**#@-*/ - -/** - * The <i>Relative volume adjustment (2)</i> frame is a more subjective frame than - * the previous ones. It allows the user to say how much he wants to - * increase/decrease the volume on each channel when the file is played. The - * purpose is to be able to align all files to a reference volume, so that you - * don't have to change the volume constantly. This frame may also be used to - * balance adjust the audio. The volume adjustment is encoded as a fixed point - * decibel value, 16 bit signed integer representing (adjustment*512), giving - * +/- 64 dB with a precision of 0.001953125 dB. E.g. +2 dB is stored as $04 00 - * and -2 dB is $FC 00. - * - * There may be more than one RVA2 frame in each tag, but only one with the same - * identification string. - * - * @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 $ - * @since ID3v2.4.0 - */ -final class ID3_Frame_RVA2 extends ID3_Frame -{ - /** - * The channel type key. - * - * @see $types - * @var string - */ - const channelType = "channelType"; - - /** - * The volume adjustment key. Adjustments are +/- 64 dB with a precision of - * 0.001953125 dB. - * - * @var string - */ - const volumeAdjustment = "volumeAdjustment"; - - /** - * The peak volume key. - * - * @var string - */ - const peakVolume = "peakVolume"; - - /** - * The list of channel types. - * - * @var Array - */ - public static $types = array - ("Other", "Master volume", "Front right", "Front left", "Back right", - "Back left", "Front centre", "Back centre", "Subwoofer"); - - /** @var string */ - private $_device; - - /** @var Array */ - private $_adjustments; - - /** - * 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; - - list ($this->_device, $this->_data) = - $this->explodeString8($this->_data, 2); - - for ($i = $j = 0; $i < 9; $i++) { - $this->_adjustments[$i] = array - (self::channelType => Transform::fromInt8($this->_data[$j++]), - self::volumeAdjustment => - Transform::fromInt16BE(substr($this->_data, $j++, 2)) / 512.0); - $j++; - $bitsInPeak = Transform::fromInt8($this->_data[$j++]); - $bytesInPeak = $bitsInPeak > 0 ? ceil($bitsInPeak / 8) : 0; - switch ($bytesInPeak) { - case 8: - case 7: - case 6: - case 5: - $this->_adjustments[$i][self::peakVolume] = - Transform::fromInt64BE(substr($this->_data, $j, $bytesInPeak)); - break; - case 4: - case 3: - $this->_adjustments[$i][self::peakVolume] = - Transform::fromUInt32BE(substr($this->_data, $j, $bytesInPeak)); - break; - case 2: - $this->_adjustments[$i][self::peakVolume] = - Transform::fromUInt16BE(substr($this->_data, $j, $bytesInPeak)); - break; - case 1: - $this->_adjustments[$i][self::peakVolume] = - Transform::fromUInt8(substr($this->_data, $j, $bytesInPeak)); - } - $j += $bytesInPeak; - } - } - - /** - * Returns the device where the adjustments should apply. - * - * @return string - */ - public function getDevice() { return $this->_device; } - - /** - * Sets the device where the adjustments should apply. - * - * @param string $device The device. - */ - public function setDevice($device) { $this->_device = $device; } - - /** - * Returns the array containing volume adjustments for each channel. Volume - * adjustments are arrays themselves containing the following keys: - * channelType, volumeAdjustment, peakVolume. - * - * @return Array - */ - public function getAdjustments() { return $this->_adjustments; } - - /** - * Sets the array of volume adjustments for each channel. Each volume - * adjustment is an array too containing the following keys: channelType, - * volumeAdjustment, peakVolume. - * - * @param Array $adjustments The volume adjustments array. - */ - public function setAdjustments($adjustments) - { - $this->_adjustments = $adjustments; - } - - /** - * Returns the frame raw data. - * - * @return string - */ - public function __toString() - { - $data = $this->_device . "\0"; - foreach ($this->_adjustments as $channel) { - $data .= Transform::toInt8($channel[self::channelType]) . - Transform::toInt16BE($channel[self::volumeAdjustment] * 512); - if (abs($channel[self::peakVolume]) <= 0xff) - $data .= Transform::toInt8(8) . - Transform::toUInt8($channel[self::peakVolume]); - else if (abs($channel[self::peakVolume]) <= 0xffff) - $data .= Transform::toInt8(16) . - Transform::toUInt16BE($channel[self::peakVolume]); - else if (abs($channel[self::peakVolume]) <= 0xffffffff) - $data .= Transform::toInt8(32) . - Transform::toUInt32BE($channel[self::peakVolume]); - else - $data .= Transform::toInt8(64) . - Transform::toInt64BE($channel[self::peakVolume]); // UInt64 - } - $this->setData($data); - return parent::__toString(); - } -} |