aboutsummaryrefslogtreecommitdiff
path: root/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVAD.php
diff options
context:
space:
mode:
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVAD.php')
-rw-r--r--libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVAD.php252
1 files changed, 252 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVAD.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVAD.php
new file mode 100644
index 0000000..c377aa7
--- /dev/null
+++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ID3/Frame/RVAD.php
@@ -0,0 +1,252 @@
+<?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: RVAD.php 105 2008-07-30 14:56:47Z svollbehr $
+ * @deprecated ID3v2.3.0
+ */
+
+/**#@+ @ignore */
+require_once("ID3/Frame.php");
+/**#@-*/
+
+/**
+ * The <i>Relative volume adjustment</i> frame is a more subjective function
+ * than the previous ones. It allows the user to say how much he wants to
+ * increase/decrease the volume on each channel while 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.
+ *
+ * There may only be one RVAD 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 $
+ * @deprecated ID3v2.3.0
+ */
+final class ID3_Frame_RVAD extends ID3_Frame
+{
+ /* The required keys. */
+
+ /** @var string */
+ const right = "right";
+
+ /** @var string */
+ const left = "left";
+
+ /** @var string */
+ const peakRight = "peakRight";
+
+ /** @var string */
+ const peakLeft = "peakLeft";
+
+ /* The optional keys. */
+
+ /** @var string */
+ const rightBack = "rightBack";
+
+ /** @var string */
+ const leftBack = "leftBack";
+
+ /** @var string */
+ const peakRightBack = "peakRightBack";
+
+ /** @var string */
+ const peakLeftBack = "peakLeftBack";
+
+ /** @var string */
+ const center = "center";
+
+ /** @var string */
+ const peakCenter = "peakCenter";
+
+ /** @var string */
+ const bass = "bass";
+
+ /** @var string */
+ const peakBass = "peakBass";
+
+ /** @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;
+
+ $flags = Transform::fromInt8($this->_data[0]);
+ $descriptionBits = Transform::fromInt8($this->_data[1]);
+ if ($descriptionBits <= 8 || $descriptionBits > 16)
+ throw new ID3_Exception
+ ("Unsupported description bit size of: " . $descriptionBits);
+
+ $this->_adjustments[self::right] =
+ ($flags & 0x1) == 0x1 ?
+ Transform::fromUInt16BE(substr($this->_data, 2, 2)) :
+ -Transform::fromUInt16BE(substr($this->_data, 2, 2));
+ $this->_adjustments[self::left] =
+ ($flags & 0x2) == 0x2 ?
+ Transform::fromUInt16BE(substr($this->_data, 4, 2)) :
+ -Transform::fromUInt16BE(substr($this->_data, 4, 2));
+ $this->_adjustments[self::peakRight] =
+ Transform::fromUInt16BE(substr($this->_data, 6, 2));
+ $this->_adjustments[self::peakLeft] =
+ Transform::fromUInt16BE(substr($this->_data, 8, 2));
+
+ if ($this->getSize() <= 10)
+ return;
+
+ $this->_adjustments[self::rightBack] =
+ ($flags & 0x4) == 0x4 ?
+ Transform::fromUInt16BE(substr($this->_data, 10, 2)) :
+ -Transform::fromUInt16BE(substr($this->_data, 10, 2));
+ $this->_adjustments[self::leftBack] =
+ ($flags & 0x8) == 0x8 ?
+ Transform::fromUInt16BE(substr($this->_data, 12, 2)) :
+ -Transform::fromUInt16BE(substr($this->_data, 12, 2));
+ $this->_adjustments[self::peakRightBack] =
+ Transform::fromUInt16BE(substr($this->_data, 14, 2));
+ $this->_adjustments[self::peakLeftBack] =
+ Transform::fromUInt16BE(substr($this->_data, 16, 2));
+
+ if ($this->getSize() <= 18)
+ return;
+
+ $this->_adjustments[self::center] =
+ ($flags & 0x10) == 0x10 ?
+ Transform::fromUInt16BE(substr($this->_data, 18, 2)) :
+ -Transform::fromUInt16BE(substr($this->_data, 18, 2));
+ $this->_adjustments[self::peakCenter] =
+ Transform::fromUInt16BE(substr($this->_data, 20, 2));
+
+ if ($this->getSize() <= 22)
+ return;
+
+ $this->_adjustments[self::bass] =
+ ($flags & 0x20) == 0x20 ?
+ Transform::fromUInt16BE(substr($this->_data, 22, 2)) :
+ -Transform::fromUInt16BE(substr($this->_data, 22, 2));
+ $this->_adjustments[self::peakBass] =
+ Transform::fromUInt16BE(substr($this->_data, 24, 2));
+ }
+
+ /**
+ * Returns the array containing the volume adjustments. The array must contain
+ * the following keys: right, left, peakRight, peakLeft. It may optionally
+ * contain the following keys: rightBack, leftBack, peakRightBack,
+ * peakLeftBack, center, peakCenter, bass, and peakBass.
+ *
+ * @return Array
+ */
+ public function getAdjustments() { return $this->_adjustments; }
+
+ /**
+ * Sets the array of volume adjustments. The array must contain the following
+ * keys: right, left, peakRight, peakLeft. It may optionally contain the
+ * following keys: rightBack, leftBack, peakRightBack, peakLeftBack, center,
+ * peakCenter, bass, and peakBass.
+ *
+ * @param Array $adjustments The volume adjustments array.
+ */
+ public function setAdjustments($adjustments)
+ {
+ $this->_adjustments = $adjustments;
+ }
+
+ /**
+ * Returns the frame raw data.
+ *
+ * @return string
+ */
+ public function __toString()
+ {
+ $flags = 0;
+ if ($this->_adjustments[self::right] > 0)
+ $flags = $flags | 0x1;
+ if ($this->_adjustments[self::left] > 0)
+ $flags = $flags | 0x2;
+ $data = Transform::toInt8(16) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::right])) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::left])) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::peakRight])) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::peakLeft]));
+
+ if (isset($this->_adjustments[self::rightBack]) &&
+ isset($this->_adjustments[self::leftBack]) &&
+ isset($this->_adjustments[self::peakRightBack]) &&
+ isset($this->_adjustments[self::peakLeftBack])) {
+ if ($this->_adjustments[self::rightBack] > 0)
+ $flags = $flags | 0x4;
+ if ($this->_adjustments[self::leftBack] > 0)
+ $flags = $flags | 0x8;
+ $data .=
+ Transform::toUInt16BE(abs($this->_adjustments[self::rightBack])) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::leftBack])) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::peakRightBack])) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::peakLeftBack]));
+ }
+
+ if (isset($this->_adjustments[self::center]) &&
+ isset($this->_adjustments[self::peakCenter])) {
+ if ($this->_adjustments[self::center] > 0)
+ $flags = $flags | 0x10;
+ $data .=
+ Transform::toUInt16BE(abs($this->_adjustments[self::center])) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::peakCenter]));
+ }
+
+ if (isset($this->_adjustments[self::bass]) &&
+ isset($this->_adjustments[self::peakBass])) {
+ if ($this->_adjustments[self::bass] > 0)
+ $flags = $flags | 0x20;
+ $data .=
+ Transform::toUInt16BE(abs($this->_adjustments[self::bass])) .
+ Transform::toUInt16BE(abs($this->_adjustments[self::peakBass]));
+ }
+ $this->setData(Transform::toInt8($flags) . $data);
+ return parent::__toString();
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-04 04:21:27 +0000