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функция не описана

getid3_ogg::ParseOggPageHeader() public WP 1.0

Это метод класса: getid3_ogg{}

Хуков нет.

Возвращает

Массив/false.

Использование

$getid3_ogg = new getid3_ogg();
$getid3_ogg->ParseOggPageHeader();

Код getid3_ogg::ParseOggPageHeader() WP 5.5.1

wp-includes/ID3/module.audio.ogg.php
<?php
public function ParseOggPageHeader() {
	// http://xiph.org/ogg/vorbis/doc/framing.html
	$oggheader['page_start_offset'] = $this->ftell(); // where we started from in the file

	$filedata = $this->fread($this->getid3->fread_buffer_size());
	$filedataoffset = 0;
	while ((substr($filedata, $filedataoffset++, 4) != 'OggS')) {
		if (($this->ftell() - $oggheader['page_start_offset']) >= $this->getid3->fread_buffer_size()) {
			// should be found before here
			return false;
		}
		if ((($filedataoffset + 28) > strlen($filedata)) || (strlen($filedata) < 28)) {
			if ($this->feof() || (($filedata .= $this->fread($this->getid3->fread_buffer_size())) === '')) {
				// get some more data, unless eof, in which case fail
				return false;
			}
		}
	}
	$filedataoffset += strlen('OggS') - 1; // page, delimited by 'OggS'

	$oggheader['stream_structver']  = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
	$filedataoffset += 1;
	$oggheader['flags_raw']         = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
	$filedataoffset += 1;
	$oggheader['flags']['fresh']    = (bool) ($oggheader['flags_raw'] & 0x01); // fresh packet
	$oggheader['flags']['bos']      = (bool) ($oggheader['flags_raw'] & 0x02); // first page of logical bitstream (bos)
	$oggheader['flags']['eos']      = (bool) ($oggheader['flags_raw'] & 0x04); // last page of logical bitstream (eos)

	$oggheader['pcm_abs_position']  = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
	$filedataoffset += 8;
	$oggheader['stream_serialno']   = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
	$filedataoffset += 4;
	$oggheader['page_seqno']        = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
	$filedataoffset += 4;
	$oggheader['page_checksum']     = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
	$filedataoffset += 4;
	$oggheader['page_segments']     = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
	$filedataoffset += 1;
	$oggheader['page_length'] = 0;
	for ($i = 0; $i < $oggheader['page_segments']; $i++) {
		$oggheader['segment_table'][$i] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
		$filedataoffset += 1;
		$oggheader['page_length'] += $oggheader['segment_table'][$i];
	}
	$oggheader['header_end_offset'] = $oggheader['page_start_offset'] + $filedataoffset;
	$oggheader['page_end_offset']   = $oggheader['header_end_offset'] + $oggheader['page_length'];
	$this->fseek($oggheader['header_end_offset']);

	return $oggheader;
}