function getAPEtagFilepointer(&$fd, &$ThisFileInfo)
{
$id3v1tagsize = 128;
$apetagheadersize = 32;
fseek($fd, 0 - $id3v1tagsize - $apetagheadersize, SEEK_END);
$APEfooterID3v1 = fread($fd, $id3v1tagsize + $apetagheadersize);
if (substr($APEfooterID3v1, 0, strlen('APETAGEX')) == 'APETAGEX' && substr($APEfooterID3v1, $apetagheadersize, strlen('TAG')) == 'TAG') {
// APE tag found before ID3v1
$APEfooterData = substr($APEfooterID3v1, 0, $apetagheadersize);
$APEfooterOffset = 0 - $apetagheadersize - $id3v1tagsize;
} elseif (substr($APEfooterID3v1, $id3v1tagsize, strlen('APETAGEX')) == 'APETAGEX') {
// APE tag found, no ID3v1
$APEfooterData = substr($APEfooterID3v1, $id3v1tagsize, $apetagheadersize);
$APEfooterOffset = 0 - $apetagheadersize;
} else {
// APE tag not found
return false;
}
$ThisFileInfo['ape']['tag_offset_end'] = $ThisFileInfo['filesize'] - ($APEfooterOffset + $apetagheadersize);
if (empty($ThisFileInfo['fileformat'])) {
$ThisFileInfo['fileformat'] = 'ape';
}
if (!($ThisFileInfo['ape']['footer'] = parseAPEheaderFooter($APEfooterData))) {
$ThisFileInfo['error'] .= "\n" . 'Error parsing APE footer at offset ' . $ThisFileInfo['ape']['tag_offset_end'];
return false;
}
if (isset($ThisFileInfo['ape']['footer']['flags']['header']) && $ThisFileInfo['ape']['footer']['flags']['header']) {
fseek($fd, $APEfooterOffset - $ThisFileInfo['ape']['footer']['raw']['tagsize'] + $apetagheadersize - $apetagheadersize, SEEK_END);
$ThisFileInfo['ape']['tag_offset_start'] = ftell($fd);
$APEtagData = fread($fd, $ThisFileInfo['ape']['footer']['raw']['tagsize'] + $apetagheadersize);
} else {
fseek($fd, $APEfooterOffset - $ThisFileInfo['ape']['footer']['raw']['tagsize'] + $apetagheadersize, SEEK_END);
$ThisFileInfo['ape']['tag_offset_start'] = ftell($fd);
$APEtagData = fread($fd, $ThisFileInfo['ape']['footer']['raw']['tagsize']);
}
$offset = 0;
if (isset($ThisFileInfo['ape']['footer']['flags']['header']) && $ThisFileInfo['ape']['footer']['flags']['header']) {
if ($ThisFileInfo['ape']['header'] = parseAPEheaderFooter(substr($APEtagData, 0, $apetagheadersize))) {
$offset += $apetagheadersize;
} else {
$ThisFileInfo['error'] .= "\n" . 'Error parsing APE header at offset ' . $ThisFileInfo['ape']['tag_offset_start'];
return false;
}
}
for ($i = 0; $i < $ThisFileInfo['ape']['footer']['raw']['tag_items']; $i++) {
$value_size = LittleEndian2Int(substr($APEtagData, $offset, 4));
$offset += 4;
$item_flags = LittleEndian2Int(substr($APEtagData, $offset, 4));
$offset += 4;
if (strstr(substr($APEtagData, $offset), chr(0)) === false) {
$ThisFileInfo['error'] .= "\n" . 'Cannot find null-byte (0x00) seperator between ItemKey #' . $i . ' and value. ItemKey starts ' . $offset . ' bytes into the APE tag, at file offset ' . ($ThisFileInfo['ape']['tag_offset_start'] + $offset);
return false;
}
$ItemKeyLength = strpos($APEtagData, chr(0), $offset) - $offset;
$item_key = strtolower(substr($APEtagData, $offset, $ItemKeyLength));
$offset += $ItemKeyLength + 1;
// skip 0x00 terminator
$ThisFileInfo['ape']['items']["{$item_key}"]['data'] = substr($APEtagData, $offset, $value_size);
$offset += $value_size;
if ($ThisFileInfo['ape']['footer']['tag_version'] >= 2) {
$ThisFileInfo['ape']['items']["{$item_key}"]['flags'] = parseAPEtagFlags($item_flags);
}
switch ($ThisFileInfo['ape']['items']["{$item_key}"]['flags']['item_contents_raw']) {
case 0:
// UTF-8
// UTF-8
case 3:
// Locator (URL, filename, etc), UTF-8 encoded
$ThisFileInfo['ape']['items']["{$item_key}"]['data'] = explode(chr(0), $ThisFileInfo['ape']['items']["{$item_key}"]['data']);
foreach ($ThisFileInfo['ape']['items']["{$item_key}"]['data'] as $key => $value) {
$ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'][$key] = RoughTranslateUnicodeToASCII($value, 3);
}
break;
default:
// binary data
//$ThisFileInfo['ape']['items']["$item_key"]['data_ascii'] = null;
break;
}
switch ($item_key) {
case 'replaygain_track_gain':
$ThisFileInfo['replay_gain']['radio']['adjustment'] = (double) $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'][0];
$ThisFileInfo['replay_gain']['radio']['originator'] = 'unspecified';
break;
case 'replaygain_track_peak':
$ThisFileInfo['replay_gain']['radio']['peak'] = (double) $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'][0];
$ThisFileInfo['replay_gain']['radio']['originator'] = 'unspecified';
break;
case 'replaygain_album_gain':
$ThisFileInfo['replay_gain']['audiophile']['adjustment'] = (double) $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'][0];
$ThisFileInfo['replay_gain']['audiophile']['originator'] = 'unspecified';
break;
case 'replaygain_album_peak':
$ThisFileInfo['replay_gain']['audiophile']['peak'] = (double) $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'][0];
$ThisFileInfo['replay_gain']['audiophile']['originator'] = 'unspecified';
break;
default:
foreach ($ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'] as $comment) {
$ThisFileInfo['ape']['comments'][strtolower($item_key)][] = $comment;
}
break;
}
}
if (isset($ThisFileInfo['ape']['comments'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['ape']['comments'], $ThisFileInfo, true, true, true);
}
return true;
}
function getAPEtagFilepointer(&$fd, &$ThisFileInfo)
{
$id3v1tagsize = 128;
$apetagheadersize = 32;
fseek($fd, 0 - $id3v1tagsize - $apetagheadersize, SEEK_END);
$APEfooterID3v1 = fread($fd, $id3v1tagsize + $apetagheadersize);
if (substr($APEfooterID3v1, 0, strlen('APETAGEX')) == 'APETAGEX') {
// APE tag found before ID3v1
$APEfooterData = substr($APEfooterID3v1, 0, $apetagheadersize);
$APEfooterOffset = 0 - $apetagheadersize - $id3v1tagsize;
} elseif (substr($APEfooterID3v1, $id3v1tagsize, strlen('APETAGEX')) == 'APETAGEX') {
// APE tag found, no ID3v1
$APEfooterData = substr($APEfooterID3v1, $id3v1tagsize, $apetagheadersize);
$APEfooterOffset = 0 - $apetagheadersize;
} else {
// APE tag not found
return false;
}
if (empty($ThisFileInfo['fileformat'])) {
$ThisFileInfo['fileformat'] = 'ape';
}
$ThisFileInfo['ape']['footer'] = parseAPEheaderFooter($APEfooterData);
if (isset($ThisFileInfo['ape']['footer']['flags']['header']) && $ThisFileInfo['ape']['footer']['flags']['header']) {
fseek($fd, $APEfooterOffset - $ThisFileInfo['ape']['footer']['raw']['tagsize'] + $apetagheadersize - $apetagheadersize, SEEK_END);
$APEtagData = fread($fd, $ThisFileInfo['ape']['footer']['raw']['tagsize'] + $apetagheadersize);
} else {
fseek($fd, $APEfooterOffset - $ThisFileInfo['ape']['footer']['raw']['tagsize'] + $apetagheadersize, SEEK_END);
$APEtagData = fread($fd, $ThisFileInfo['ape']['footer']['raw']['tagsize']);
}
$offset = 0;
if (isset($ThisFileInfo['ape']['footer']['flags']['header']) && $ThisFileInfo['ape']['footer']['flags']['header']) {
$ThisFileInfo['ape']['header'] = parseAPEheaderFooter(substr($APEtagData, 0, $apetagheadersize));
$offset += $apetagheadersize;
}
for ($i = 0; $i < $ThisFileInfo['ape']['footer']['raw']['tag_items']; $i++) {
$value_size = LittleEndian2Int(substr($APEtagData, $offset, 4));
$offset += 4;
$item_flags = LittleEndian2Int(substr($APEtagData, $offset, 4));
$offset += 4;
$ItemKeyLength = strpos($APEtagData, chr(0), $offset) - $offset;
$item_key = strtolower(substr($APEtagData, $offset, $ItemKeyLength));
$offset += $ItemKeyLength + 1;
// skip 0x00 terminator
$data = substr($APEtagData, $offset, $value_size);
$offset += $value_size;
$ThisFileInfo['ape']['items']["{$item_key}"]['raw']['value_size'] = $value_size;
$ThisFileInfo['ape']['items']["{$item_key}"]['raw']['item_flags'] = $item_flags;
if ($ThisFileInfo['ape']['footer']['tag_version'] >= 2) {
$ThisFileInfo['ape']['items']["{$item_key}"]['flags'] = parseAPEtagFlags($item_flags);
}
$ThisFileInfo['ape']['items']["{$item_key}"]['data'] = $data;
$ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'] = $data;
if (APEtagItemIsUTF8Lookup($item_key)) {
$ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'] = RoughTranslateUnicodeToASCII($ThisFileInfo['ape']['items']["{$item_key}"]['data'], 3);
}
switch ($item_key) {
case 'replaygain_track_gain':
$ThisFileInfo['replay_gain']['radio']['adjustment'] = (double) $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'];
$ThisFileInfo['replay_gain']['radio']['originator'] = 'unspecified';
break;
case 'replaygain_track_peak':
$ThisFileInfo['replay_gain']['radio']['peak'] = (double) $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'];
$ThisFileInfo['replay_gain']['radio']['originator'] = 'unspecified';
break;
case 'replaygain_album_gain':
$ThisFileInfo['replay_gain']['audiophile']['adjustment'] = (double) $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'];
$ThisFileInfo['replay_gain']['audiophile']['originator'] = 'unspecified';
break;
case 'replaygain_album_peak':
$ThisFileInfo['replay_gain']['audiophile']['peak'] = (double) $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'];
$ThisFileInfo['replay_gain']['audiophile']['originator'] = 'unspecified';
break;
case 'title':
case 'artist':
case 'album':
case 'track':
case 'genre':
case 'comment':
case 'year':
$ThisFileInfo['ape']['comments']["{$item_key}"][] = $ThisFileInfo['ape']['items']["{$item_key}"]['data_ascii'];
break;
}
}
if (isset($ThisFileInfo['ape']['comments'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['ape']['comments'], $ThisFileInfo, true, true, true);
}
return true;
}
