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Improved code and comments: add ID3v1 write support, add unit tests

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git-svn-id: http://php-reader.googlecode.com/svn/trunk@39 51a70ab9-7547-0410-9469-37e369ee0574
This commit is contained in:
svollbehr
2008-03-26 17:27:22 +00:00
parent 3914cfdacc
commit 1182f0e0ff
107 changed files with 2107 additions and 963 deletions
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57
src/ID3/Object.php
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@@ -2,6 +2,8 @@
/**
* 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:
*
@@ -10,7 +12,7 @@
* - 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 BEHR Software Systems nor the names of its
* - 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.
*
@@ -28,8 +30,8 @@
*
* @package php-reader
* @subpackage ID3
* @copyright Copyright (c) 2008 BEHR Software Systems
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
* @license http://code.google.com/p/php-reader/wiki/License New BSD License
* @version $Id$
*/
@@ -38,9 +40,9 @@
*
* @package php-reader
* @subpackage ID3
* @author Sven Vollbehr <sven.vollbehr@behrss.eu>
* @copyright Copyright (c) 2008 BEHR Software Systems
* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
* @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 $Rev$
*/
abstract class ID3_Object
@@ -52,17 +54,52 @@ abstract class ID3_Object
*/
protected $_reader;
/**
* The options array.
*
* @var Array
*/
protected $_options = array();
/**
* Constructs the class with given parameters and reads object related data
* from the ID3v2 tag.
*
* @param Reader $reader The reader object.
*/
public function __construct($reader)
public function __construct($reader = null)
{
$this->_reader = $reader;
}
/**
* Magic function so that $obj->value will work.
*
* @param string $name The field name.
* @return mixed
*/
public function __get($name)
{
if (method_exists($this, "get" . ucfirst($name)))
return call_user_func(array($this, "get" . ucfirst($name)));
else throw new Reader_Exception("Unknown field: " . $name);
}
/**
* Magic function so that assignments with $obj->value will work.
*
* @param string $name The field name.
* @param string $value The field value.
* @return mixed
*/
public function __set($name, $value)
{
if (method_exists($this, "set" . ucfirst($name)))
call_user_func
(array($this, "set" . ucfirst($name)), $value);
else throw new Reader_Exception("Unknown field: " . $name);
}
/**
* Encodes the given 32-bit integer to 28-bit synchsafe integer, where the
* most significant bit of each byte is zero, making seven bits out of eight
@@ -71,7 +108,8 @@ abstract class ID3_Object
* @param integer $val The integer to encode.
* @return integer
*/
protected function encodeSynchsafe32($val) {
protected function encodeSynchsafe32($val)
{
for ($i = 0, $mask = 0xffffff00; $i < 4; $i++, $mask <<= 8)
$val = ($val << 1 & $mask) | ($val << 1 & ~$mask) >> 1;
return $val & 0x7fffffff;
@@ -83,7 +121,8 @@ abstract class ID3_Object
* @param integer $val The integer to decode
* @return integer
*/
protected function decodeSynchsafe32($val) {
protected function decodeSynchsafe32($val)
{
for ($i = 0, $mask = 0xff000000; $i < 3; $i++, $mask >>= 8)
$val = ($val & $mask) >> 1 | ($val & ~$mask);
return $val;