GetId3\Module\Audio\Aa Class Reference

GetId3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //. More...

Inheritance diagram for GetId3\Module\Audio\Aa:

Collaboration diagram for GetId3\Module\Audio\Aa:

Public Member Functions
	analyze ()
Public Member Functions inherited from GetId3\Handler\BaseHandler
	__construct (GetId3Core $getid3, $call_module=null)
	analyze ()
	Analyze from file pointer. More...
	AnalyzeString (&$string)
	Analyze from string instead. More...
	saveAttachment (&$ThisFileInfoIndex, $filename, $offset, $length)

Additional Inherited Members
Protected Member Functions inherited from GetId3\Handler\BaseHandler
	ftell ()
	fread ($bytes)
	fseek ($bytes, $whence=SEEK_SET)
	feof ()
	isDependencyFor ($module)
	error ($text)
	warning ($text)
Protected Attributes inherited from GetId3\Handler\BaseHandler
	$getid3
	$data_string_flag = false
	$data_string = ''
	$data_string_position = 0
	$data_string_length = 0

Detailed Description

GetId3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //.

module for analyzing Audible Audiobook files

Author

James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g http://www.getid3.org

Definition at line 29 of file Aa.php.

Member Function Documentation

analyze()

GetId3\Module\Audio\Aa::analyze

(

)

Returns

boolean

Reimplemented from GetId3\Handler\BaseHandler.

Definition at line 36 of file Aa.php.

    {
        $info = &$this->getid3->info;
 
        fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
        $AAheader  = fread($this->getid3->fp, 8);
 
        $magic = "\x57\x90\x75\x36";
        if (substr($AAheader, 4, 4) != $magic) {
            $info['error'][] = 'Expecting "'.Helper::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.Helper::PrintHexBytes(substr($AAheader, 4, 4)).'"';
 
            return false;
        }
 
        // shortcut
        $info['aa'] = array();
        $thisfile_au = &$info['aa'];
 
        $info['fileformat']            = 'aa';
        $info['audio']['dataformat']   = 'aa';
$info['error'][] = 'Audible Audiobook (.aa) parsing not enabled in this version of GetId3Core() ['.$this->getid3->version().']';
return false;
        $info['audio']['bitrate_mode'] = 'cbr'; // is it?
        $thisfile_au['encoding']       = 'ISO-8859-1';
 
        $thisfile_au['filesize'] = Helper::BigEndian2Int(substr($AUheader,  0, 4));
        if ($thisfile_au['filesize'] > ($info['avdataend'] - $info['avdataoffset'])) {
            $info['warning'][] = 'Possible truncated file - expecting "'.$thisfile_au['filesize'].'" bytes of data, only found '.($info['avdataend'] - $info['avdataoffset']).' bytes"';
        }
 
        $info['audio']['bits_per_sample'] = 16; // is it?
        $info['audio']['sample_rate'] = $thisfile_au['sample_rate'];
        $info['audio']['channels']    = $thisfile_au['channels'];
 
        //$info['playtime_seconds'] = 0;
        //$info['audio']['bitrate'] = 0;
        return true;
    }

References $info, GetId3\Lib\Helper\BigEndian2Int(), GetId3\Handler\BaseHandler\fread(), GetId3\Handler\BaseHandler\fseek(), and GetId3\Lib\Helper\PrintHexBytes().

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The documentation for this class was generated from the following file:

• libs/composer/vendor/phansys/getid3/GetId3/Module/Audio/Aa.php