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Add support for ID3v2 extension to ISO14496

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git-svn-id: http://php-reader.googlecode.com/svn/trunk@86 51a70ab9-7547-0410-9469-37e369ee0574
This commit is contained in:
svollbehr
2008-04-25 07:30:05 +00:00
parent 42d91f7e33
commit 49f4ade5f7
3 changed files with 113 additions and 34 deletions
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45
src/ID3v2.php
View File

@@ -59,26 +59,6 @@ require_once("ID3/Frame.php");
* need not be known to the software that encounters them. Each frame has an
* unique and predefined identifier which allows software to skip unknown
* frames.
*
* Overall tag structure:
*
* <pre>
* +-----------------------------+
* | Header (10 bytes) |
* +-----------------------------+
* | Extended Header |
* | (variable length, OPTIONAL) |
* +-----------------------------+
* | Frames (variable length) |
* +-----------------------------+
* | Padding |
* | (variable length, OPTIONAL) |
* +-----------------------------+
* | Footer (10 bytes, OPTIONAL) |
* +-----------------------------+
* </pre>
*
* In general, padding and footer are mutually exclusive.
*
* @package php-reader
* @subpackage ID3
@@ -105,7 +85,7 @@ final class ID3v2
private $_frames = array();
/** @var string */
private $_filename;
private $_filename = false;
/** @var Array */
private $_options;
@@ -118,11 +98,15 @@ final class ID3v2
* o version -- The ID3v2 tag version to use in write operation. This option
* is automatically set when a tag is read from a file and defaults to
* version 4.0 for tag write.
* o readonly -- Indicates that the tag is read from a temporary file or
* another source it cannot be written back to. The tag can, however,
* still be written to another file.
*
* @todo Only limited subset of flags are processed.
* @todo Utilize the SEEK frame and search for a footer to find the tag
* @todo Utilize the LINK frame to fetch frames from other sources
* @param string $filename The path to the file.
* @param string $filename The path to the file, file descriptor of an opened
* file, or {@link Reader} instance.
* @param Array $options The options array.
*/
public function __construct($filename = false, $options = array())
@@ -133,11 +117,17 @@ final class ID3v2
}
$this->_options = &$options;
if (($this->_filename = $filename) === false ||
file_exists($filename) === false) {
if ($filename === false ||
(is_string($filename) && file_exists($filename) === false) ||
(is_resource($filename) && get_resource_type($filename) != "file")) {
$this->_header = new ID3_Header(null, $options);
} else {
$this->_reader = new Reader($filename);
if (is_string($filename) && !isset($options["readonly"]))
$this->_filename = $filename;
if ($filename instanceof Reader)
$this->_reader = $filename;
else
$this->_reader = new Reader($filename);
if ($this->_reader->readString8(3) != "ID3")
throw new ID3_Exception
("File does not contain ID3v2 tag: " . $filename);
@@ -246,10 +236,7 @@ final class ID3v2
*
* @return Array
*/
public function getFrames()
{
return $this->_frames;
}
public function getFrames() { return $this->_frames; }
/**
* Returns an array of frames matching the given identifier or an empty array

93
src/ISO14496/Box/ID32.php Normal file
View File

@@ -0,0 +1,93 @@
<?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 ISO 14496
* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
* @license http://code.google.com/p/php-reader/wiki/License New BSD License
* @version $Id$
*/
/**#@+ @ignore */
require_once("ISO14496/Box/Full.php");
/**#@-*/
/**
* The <i>ID3v2 Box</i> resides under the {@link ISO14496_Box_META Meta Box} and
* stores ID3 version 2 meta-data. There may be more than one ID3v2 Box present
* each with a different language code.
*
* @package php-reader
* @subpackage ISO 14496
* @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 $Rev$
*/
final class ISO14496_Box_ID32 extends ISO14496_Box_Full
{
/** @var string */
private $_language;
/** @var ID3v2 */
private $_tag;
/**
* Constructs the class with given parameters and reads box related data from
* the ISO Base Media file.
*
* @param Reader $reader The reader object.
*/
public function __construct($reader)
{
parent::__construct($reader);
$this->_language =
chr(((($tmp = $this->_reader->readUInt16BE()) >> 10) & 0x1f) + 0x60) .
chr((($tmp >> 5) & 0x1f) + 0x60) . chr(($tmp & 0x1f) + 0x60);
$this->_tag = new ID3v2($this->_reader, array("readonly" => true));
}
/**
* Returns the three byte language code to describe the language of this
* media, according to {@link http://www.loc.gov/standards/iso639-2/
* ISO 639-2/T}.
*
* @return string
*/
public function getLanguage() { return $this->_language; }
/**
* Returns the {@link ID3v2} tag class instance.
*
* @return string
*/
public function getTag() { return $this->_tag; }
}

9
src/Reader.php
View File

@@ -68,7 +68,9 @@ class Reader
*/
public function __construct($filename, $mode = "rb")
{
if (($this->_fd = fopen($filename, $mode)) === false)
if (is_resource($filename) && get_resource_type($filename) == "file")
$this->_fd = $filename;
else if (($this->_fd = fopen($filename, $mode)) === false)
throw new Reader_Exception("Unable to open file:" . $filename);
fseek($this->_fd, 0, SEEK_END);
@@ -156,10 +158,7 @@ class Reader
*
* @return integer
*/
public function getSize()
{
return $this->_size;
}
public function getSize() { return $this->_size; }
/**
* Magic function so that $obj->value will work.