/**
* Writes the data size to the header and a CRC checksum at the end.
* @return \Fit\Writer
*/
protected function writeFileClosure()
{
//mark current writing position
$offset = $this->writer->getOffset();
//move to header and write the size of the data
$this->writer->setOffset(4);
$data_size = $this->writer->getSize() - 14;
$this->writer->writeUInt32LE($data_size);
// Does not include file header or crc. Little endian format.
//write 2 byte crc check at end of file
$this->writer->setOffset($offset);
$this->writer->writeUInt16LE(0);
return $this;
}
/**
* Writes the frame raw data without the header.
*
* @param Zend_Io_Writer $writer The writer object.
* @return void
*/
protected function _writeData($writer)
{
$writer->writeInt8($flags = 0);
if ($this->_adjustments[self::right] > 0) {
$flags = $flags | 0x1;
}
if ($this->_adjustments[self::left] > 0) {
$flags = $flags | 0x2;
}
$writer->writeInt8(16)->writeUInt16BE(abs($this->_adjustments[self::right]))->writeUInt16BE(abs($this->_adjustments[self::left]))->writeUInt16BE(abs($this->_adjustments[self::peakRight]))->writeUInt16BE(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;
}
$writer->writeUInt16BE(abs($this->_adjustments[self::rightBack]))->writeUInt16BE(abs($this->_adjustments[self::leftBack]))->writeUInt16BE(abs($this->_adjustments[self::peakRightBack]))->writeUInt16BE(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;
}
$writer->writeUInt16BE(abs($this->_adjustments[self::center]))->writeUInt16BE(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;
}
$writer->writeUInt16BE(abs($this->_adjustments[self::bass]))->writeUInt16BE(abs($this->_adjustments[self::peakBass]));
}
$writer->setOffset(0);
$writer->writeInt8($flags);
}
