/**
* Constructs the class with given parameters and reads object related data
* from the ID3v2 tag.
*
* @param Reader $reader The reader object.
* @param Array $options The options array.
*/
public function __construct($reader = null, &$options = array())
{
parent::__construct($reader);
if ($reader === null) {
return;
}
$this->_version = $options["version"] = $this->_reader->readInt8() + $this->_reader->readInt8() / 10;
$this->_flags = $this->_reader->readInt8();
$this->_size = $this->decodeSynchsafe32($this->_reader->readUInt32BE());
$this->setOptions($options);
}
/**
* Constructs the class with given parameters and reads object related data
* from the ID3v2 tag.
*
* @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;
}
$offset = $this->_reader->getOffset();
$this->_size = $this->decodeSynchsafe32($this->_reader->readUInt32BE());
/* ID3v2.3.0 ExtendedHeader */
if (isset($this->_options["version"]) && $this->_options["version"] < 4) {
if ($this->_reader->readUInt16BE() == 0x8000) {
$this->_flags = self::CRC32;
}
$this->_padding = $this->_reader->readUInt32BE();
if ($this->hasFlag(self::CRC32)) {
$this->_crc = Transform::readUInt32BE();
}
} else {
$this->_reader->skip(1);
$this->_flags = $this->_reader->readInt8();
if ($this->hasFlag(self::UPDATE)) {
$this->_reader->skip(1);
}
if ($this->hasFlag(self::CRC32)) {
$this->_reader->skip(1);
$this->_crc = Transform::fromInt8($this->_reader->read(1)) * (0xfffffff + 1) + decodeSynchsafe32(Transform::fromUInt32BE($this->_reader->read(4)));
}
if ($this->hasFlag(self::RESTRICTED)) {
$this->_reader->skip(1);
$this->_restrictions = $this->_reader->readInt8(1);
}
}
}
/**
* Constructs the class with given parameters and reads object related data
* from the ID3v2 tag.
*
* @todo Only limited subset of flags are processed.
* @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) {
$this->_identifier = substr(get_class($this), -4);
} else {
$this->_identifier = $this->_reader->readString8(4);
/* ID3v2.3.0 size and flags; convert flags to 2.4.0 format */
if ($this->getOption("version", 4) < 4) {
$this->_size = $this->_reader->readUInt32BE();
$flags = $this->_reader->readUInt16BE();
if (($flags & 0x8000) == 0x8000)
$this->_flags |= self::DISCARD_ON_TAGCHANGE;
if (($flags & 0x4000) == 0x4000)
$this->_flags |= self::DISCARD_ON_FILECHANGE;
if (($flags & 0x2000) == 0x2000)
$this->_flags |= self::READ_ONLY;
if (($flags & 0x80) == 0x80)
$this->_flags |= self::COMPRESSION;
if (($flags & 0x40) == 0x40)
$this->_flags |= self::ENCRYPTION;
if (($flags & 0x20) == 0x20)
$this->_flags |= self::GROUPING_IDENTITY;
}
/* ID3v2.4.0 size and flags */
else {
$this->_size = $this->decodeSynchsafe32($this->_reader->readUInt32BE());
$this->_flags = $this->_reader->readUInt16BE();
}
$dataLength = $this->_size;
if ($this->hasFlag(self::DATA_LENGTH_INDICATOR)) {
$dataLength = $this->decodeSynchsafe32($this->_reader->readUInt32BE());
$this->_size -= 4;
}
$this->_data = $this->_reader->read($this->_size);
$this->_size = $dataLength;
if ($this->hasFlag(self::UNSYNCHRONISATION) ||
$this->getOption("unsyncronisation", false) === true)
$this->_data = $this->decodeUnsynchronisation($this->_data);
}
}
/**
* Constructs the class with given parameters and reads object related data
* from the ID3v2 tag.
*
* @todo Only limited subset of flags are processed.
* @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) {
$this->_identifier = substr(get_class($this), -4);
} else {
$this->_identifier = $this->_reader->readString8(4);
$this->_size = $this->decodeSynchsafe32($this->_reader->readUInt32BE());
/* ID3v2.3.0 Flags; convert to 2.4.0 format */
if (isset($this->_options["version"]) && $this->_options["version"] < 4) {
$flags = $this->_reader->readUInt16BE();
if (($flags & 0x8000) == 0x8000) {
$this->_flags |= self::DISCARD_ON_TAGCHANGE;
}
if (($flags & 0x4000) == 0x4000) {
$this->_flags |= self::DISCARD_ON_FILECHANGE;
}
if (($flags & 0x2000) == 0x2000) {
$this->_flags |= self::READ_ONLY;
}
if (($flags & 0x80) == 0x80) {
$this->_flags |= self::COMPRESSION;
}
if (($flags & 0x40) == 0x40) {
$this->_flags |= self::ENCRYPTION;
}
if (($flags & 0x20) == 0x20) {
$this->_flags |= self::GROUPING_IDENTITY;
}
} else {
$this->_flags = $this->_reader->readUInt16BE();
}
$this->_data = $this->_reader->read($this->_size);
}
}
