Just reverses the bytes (assumes hex is passed in)
| public static intel2Moto ( string $intel ) : string | ||
| $intel | string | |
| return | string | |
/**
* Panasonic Special data section
*/
public function parse($block, &$result)
{
$intel = true;
$model = $result['IFD0']['Model'];
//current place
$place = 8;
$offset = 8;
$num = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel) {
$num = Horde_Image_Exif::intel2Moto($num);
}
$result['SubIFD']['MakerNote']['Offset'] = hexdec($num);
//Get number of tags (2 bytes)
$num = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$num = Horde_Image_Exif::intel2Moto($num);
}
$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = hexdec($num);
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < hexdec($num); $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$tag = Horde_Image_Exif::intel2Moto($tag);
}
$tag_name = $this->_lookupTag($tag);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$type = Horde_Image_Exif::intel2Moto($type);
}
$this->_lookupType($type, $size);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel) {
$count = Horde_Image_Exif::intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block, $place, 4);
$place += 4;
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel) {
$value = Horde_Image_Exif::intel2Moto($value);
}
$data = substr($block, hexdec($value) - $offset, $bytesofdata * 2);
}
$formated_data = $this->_formatData($type, $tag, $intel, $data);
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
/**
*
* @param $block
* @param $result
* @param $seek
* @param $globalOffset
* @return unknown_type
*/
public function parse($block, &$result, $seek, $globalOffset)
{
$intel = $result['Endien'] == 'Intel';
$model = $result['IFD0']['Model'];
// New header for new DSLRs - Check for it because the number of bytes
// that count the IFD fields differ in each case. Fixed by Zenphoto
// 2/24/08
$new = false;
if (substr($block, 0, 8) == "OLYMPUS") {
$new = true;
} elseif (substr($block, 0, 7) == "OLYMP" || substr($block, 0, 7) == "OLYMP") {
$new = false;
} else {
// Header does not match known Olympus headers.
// This is not a valid OLYMPUS Makernote.
return false;
}
// Offset of IFD entry after Olympus header.
$place = 8;
$offset = 8;
// Get number of tags (1 or 2 bytes, depending on New or Old makernote)
$countfieldbits = $new ? 1 : 2;
// New makernote repeats 1-byte value twice, so increment $place by 2
// in either case.
$num = bin2hex(substr($block, $place, $countfieldbits));
$place += 2;
if ($intel) {
$num = Horde_Image_Exif::intel2Moto($num);
}
$ntags = hexdec($num);
$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = $ntags;
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < $ntags; $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$tag = Horde_Image_Exif::intel2Moto($tag);
}
$tag_name = $this->_lookupTag($tag);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$type = Horde_Image_Exif::intel2Moto($type);
}
list($type, $size) = $this->_lookupType($type);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel) {
$count = Horde_Image_Exif::intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block, $place, 4);
$place += 4;
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel) {
$value = Horde_Image_Exif::intel2Moto($value);
}
//offsets are from TIFF header which is 12 bytes from the start
//of the file
// $v = fseek($seek, $globalOffset + hexdec($value));
$result['Errors'] = $result['Errors']++;
$data = '';
}
$formated_data = $this->_formatData($type, $tag, $intel, $data);
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
/**
*
* @param $block
* @param $result
* @return unknown_type
*/
public function parse($block, &$result)
{
$intel = $result['Endien'] == 'Intel';
$model = $result['IFD0']['Model'];
//these 6 models start with "Nikon". Other models dont.
if ($model == "E700" || $model == "E800" || $model == "E900" || $model == "E900S" || $model == "E910" || $model == "E950") {
//current place
$place = 8;
$model = 0;
//Get number of tags (2 bytes)
$num = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$num = Horde_Image_Exif::intel2Moto($num);
}
$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = hexdec($num);
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < hexdec($num); $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$tag = Horde_Image_Exif::intel2Moto($tag);
}
$tag_name = $this->_lookupTag($tag, $model);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$type = Horde_Image_Exif::intel2Moto($type);
}
$this->_lookupType($type, $size);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel) {
$count = Horde_Image_Exif::intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block, $place, 4);
$place += 4;
//if tag is 0002 then its the ASCII value which we know is at 140 so calc offset
//THIS HACK ONLY WORKS WITH EARLY NIKON MODELS
if ($tag == '0002') {
$offset = hexdec($value) - 140;
}
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel) {
$value = Horde_Image_Exif::intel2Moto($value);
}
$data = substr($block, hexdec($value) - $offset, $bytesofdata * 2);
}
$formated_data = $this->_formatData($type, $tag, $intel, $model, $data);
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
} else {
//current place
$place = 0;
$model = 1;
$nikon = substr($block, $place, 8);
$place += 8;
$endien = substr($block, $place, 4);
$place += 4;
//2 bytes of 0x002a
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
//Then 4 bytes of offset to IFD0 (usually 8 which includes all 8
//bytes of TIFF header)
$offset = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel) {
$offset = Horde_Image_Exif::intel2Moto($offset);
}
if (hexdec($offset) > 8) {
$place += $offset - 8;
}
//Get number of tags (2 bytes)
$num = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$num = Horde_Image_Exif::intel2Moto($num);
}
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < hexdec($num); $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$tag = Horde_Image_Exif::intel2Moto($tag);
}
$tag_name = $this->_lookupTag($tag, $model);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$type = Horde_Image_Exif::intel2Moto($type);
}
$this->_lookupType($type, $size);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel) {
$count = Horde_Image_Exif::intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block, $place, 4);
$place += 4;
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel) {
$value = Horde_Image_Exif::intel2Moto($value);
}
$data = substr($block, hexdec($value) + hexdec($offset) + 2, $bytesofdata);
}
$formated_data = $this->_formatData($type, $tag, $intel, $model, $data);
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
}
/**
* Canon Special data section.
*
* @see http://www.burren.cx/david/canon.html
* @see http://www.burren.cx/david/canon.html
* @see http://www.ozhiker.com/electronics/pjmt/jpeg_info/canon_mn.html
*/
public function parse($block, &$result, $seek, $globalOffset)
{
$place = 0;
//current place
if ($result['Endien'] == 'Intel') {
$intel = 1;
} else {
$intel = 0;
}
$model = $result['IFD0']['Model'];
//Get number of tags (2 bytes)
$num = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$num = Horde_Image_Exif::intel2Moto($num);
}
$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = hexdec($num);
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < hexdec($num); $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$tag = Horde_Image_Exif::intel2Moto($tag);
}
$tag_name = $this->_lookupTag($tag);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$type = Horde_Image_Exif::intel2Moto($type);
}
$this->_lookupType($type, $size);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel == 1) {
$count = Horde_Image_Exif::intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
if ($bytesofdata <= 0) {
return;
//if this value is 0 or less then we have read all the tags we can
}
//4 byte value of data or pointer to data
$value = substr($block, $place, 4);
$place += 4;
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel == 1) {
$value = Horde_Image_Exif::intel2Moto($value);
}
//offsets are from TIFF header which is 12 bytes from the start
//of the file
$v = fseek($seek, $globalOffset + hexdec($value));
$exiferFileSize = 0;
if ($v == 0 && $bytesofdata < $exiferFileSize) {
$data = fread($seek, $bytesofdata);
} elseif ($v == -1) {
$result['Errors'] = $result['Errors']++;
$data = '';
} else {
$data = '';
}
}
// Ensure the index exists.
$result['SubIFD']['MakerNote'][$tag_name] = '';
$formated_data = $this->_formatData($type, $tag, $intel, $data, $result, $result['SubIFD']['MakerNote'][$tag_name]);
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
/**
* GPS Special data section
*
* @see http://drewnoakes.com/code/exif/sampleOutput.html
* @see http://www.geosnapper.com
*/
public function parse($block, &$result, $offset, $seek, $globalOffset)
{
if ($result['Endien'] == 'Intel') {
$intel = 1;
} else {
$intel = 0;
}
//offsets are from TIFF header which is 12 bytes from the start of the
//file
$v = fseek($seek, $globalOffset + $offset);
if ($v == -1) {
$result['Errors'] = $result['Errors']++;
}
$num = bin2hex(fread($seek, 2));
if ($intel == 1) {
$num = Horde_Image_Exif::intel2Moto($num);
}
$num = hexdec($num);
$result['GPS']['NumTags'] = $num;
$block = fread($seek, $num * 12);
$place = 0;
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < $num; $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$tag = Horde_Image_Exif::intel2Moto($tag);
}
$tag_name = $this->_lookupTag($tag);
//2 byte datatype
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel == 1) {
$type = Horde_Image_Exif::intel2Moto($type);
}
$this->_lookupType($type, $size);
//4 byte number of elements
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel == 1) {
$count = Horde_Image_Exif::intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value or pointer to value if larger than 4 bytes
$value = substr($block, $place, 4);
$place += 4;
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel == 1) {
$value = Horde_Image_Exif::intel2Moto($value);
}
//offsets are from TIFF header which is 12 bytes from the start
//of the file
$v = fseek($seek, $globalOffset + hexdec($value));
if ($v == 0) {
$data = fread($seek, $bytesofdata);
} elseif ($v == -1) {
$result['Errors'] = $result['Errors']++;
}
}
$result['GPS' . $tag_name] = $this->_formatData($type, $tag, $intel, $data);
}
}
/**
*
* @param $block
* @param $result
* @param $seek
* @param $globalOffset
* @return unknown_type
*/
public function parse($block, &$result, $seek, $globalOffset)
{
$intel = $result['Endien'] == 'Intel';
$model = $result['IFD0']['Model'];
//current place
$place = 8;
$offset = 8;
//Get number of tags (2 bytes)
$num = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$num = Horde_Image_Exif::intel2Moto($num);
}
$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = hexdec($num);
//loop thru all tags Each field is 12 bytes
for ($i = 0; $i < hexdec($num); $i++) {
//2 byte tag
$tag = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$tag = Horde_Image_Exif::intel2Moto($tag);
}
$tag_name = $this->_lookupTag($tag);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$type = Horde_Image_Exif::intel2Moto($type);
}
list($type, $size) = $this->_lookupType($type);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel) {
$count = Horde_Image_Exif::intel2Moto($count);
}
$bytesofdata = $size * hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block, $place, 4);
$place += 4;
if ($bytesofdata <= 4) {
$data = $value;
} else {
$value = bin2hex($value);
if ($intel) {
$value = Horde_Image_Exif::intel2Moto($value);
}
//offsets are from TIFF header which is 12 bytes from the start
//of the file
if ($seek->seek($globalOffset + hexdec($value))) {
$data = $seek->substring(0, $bytesofdata);
} else {
$result['Errors'] = $result['Errors']++;
}
}
$formated_data = $this->_formatData($type, $tag, $intel, $data);
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
/**
*
* @param $type
* @param $tag
* @param $intel
* @param $data
* @return unknown_type
*/
protected function _formatData($type, $tag, $intel, $data)
{
switch ($type) {
case 'ASCII':
// Search for a null byte and stop there.
if (($pos = strpos($data, chr(0))) !== false) {
$data = substr($data, 0, $pos);
}
// Format certain kinds of strings nicely (Camera make etc.)
if ($tag == '010f') {
$data = Horde_String::ucwords(Horde_String::lower(trim($data)));
}
break;
case 'URATIONAL':
case 'SRATIONAL':
$data = bin2hex($data);
if ($intel == 1) {
$data = Horde_Image_Exif::intel2Moto($data);
}
if ($intel == 1) {
// intel stores them bottom-top
$top = hexdec(substr($data, 8, 8));
} else {
// motorola stores them top-bottom
$top = hexdec(substr($data, 0, 8));
}
if ($intel == 1) {
// intel stores them bottom-top
$bottom = hexdec(substr($data, 0, 8));
} else {
// motorola stores them top-bottom
$bottom = hexdec(substr($data, 8, 8));
}
if ($type == 'SRATIONAL' && $top > 2147483647) {
// this makes the number signed instead of unsigned
$top = $top - 4294967296;
}
if ($bottom != 0) {
$data = $top / $bottom;
} elseif ($top == 0) {
$data = 0;
} else {
$data = $top . '/' . $bottom;
}
// Exposure Time
if ($tag == '829a') {
if ($bottom != 0) {
$data = $top . '/' . $bottom;
} else {
$data = 0;
}
}
break;
case 'USHORT':
case 'SSHORT':
case 'ULONG':
case 'SLONG':
case 'FLOAT':
case 'DOUBLE':
$data = bin2hex($data);
if ($intel == 1) {
$data = Horde_Image_Exif::intel2Moto($data);
}
if ($intel == 0 && ($type == 'USHORT' || $type == 'SSHORT')) {
$data = substr($data, 0, 4);
}
$data = hexdec($data);
if ($type == 'SSHORT' && $data > 32767) {
// this makes the number signed instead of unsigned
$data = $data - 65536;
}
if ($type == 'SLONG' && $data > 2147483647) {
// this makes the number signed instead of unsigned
$data = $data - 4294967296;
}
break;
case 'UNDEFINED':
// ExifVersion,FlashPixVersion,InteroperabilityVersion
if ($tag == '9000' || $tag == 'a000' || $tag == '0002') {
$data = sprintf(Horde_Image_Translation::t("version %d"), $data / 100);
}
break;
default:
$data = bin2hex($data);
if ($intel == 1) {
$data = Horde_Image_Exif::intel2Moto($data);
}
break;
}
return $data;
}
