freenetis-github/application/vendors/mpdf/classes/bmp.php @ 31ca0a32
| 31ca0a32 | Michal Kliment | <?php
|
|
class bmp {
|
|||
var $mpdf = null;
|
|||
function bmp(&$mpdf) {
|
|||
$this->mpdf = $mpdf;
|
|||
}
|
|||
function _getBMPimage($data, $file) {
|
|||
$info = array();
|
|||
// Adapted from script by Valentin Schmidt
|
|||
// http://staff.dasdeck.de/valentin/fpdf/fpdf_bmp/
|
|||
$bfOffBits=$this->_fourbytes2int_le(substr($data,10,4));
|
|||
$width=$this->_fourbytes2int_le(substr($data,18,4));
|
|||
$height=$this->_fourbytes2int_le(substr($data,22,4));
|
|||
$flip = ($height<0);
|
|||
if ($flip) $height =-$height;
|
|||
$biBitCount=$this->_twobytes2int_le(substr($data,28,2));
|
|||
$biCompression=$this->_fourbytes2int_le(substr($data,30,4));
|
|||
$info = array('w'=>$width, 'h'=>$height);
|
|||
if ($biBitCount<16){
|
|||
$info['cs'] = 'Indexed';
|
|||
$info['bpc'] = $biBitCount;
|
|||
$palStr = substr($data,54,($bfOffBits-54));
|
|||
$pal = '';
|
|||
$cnt = strlen($palStr)/4;
|
|||
for ($i=0;$i<$cnt;$i++){
|
|||
$n = 4*$i;
|
|||
$pal .= $palStr[$n+2].$palStr[$n+1].$palStr[$n];
|
|||
}
|
|||
$info['pal'] = $pal;
|
|||
}
|
|||
else{
|
|||
$info['cs'] = 'DeviceRGB';
|
|||
$info['bpc'] = 8;
|
|||
}
|
|||
if ($this->mpdf->restrictColorSpace==1 || $this->mpdf->PDFX || $this->mpdf->restrictColorSpace==3) {
|
|||
if (($this->mpdf->PDFA && !$this->mpdf->PDFAauto) || ($this->mpdf->PDFX && !$this->mpdf->PDFXauto)) { $this->mpdf->PDFAXwarnings[] = "Image cannot be converted to suitable colour space for PDFA or PDFX file - ".$file." - (Image replaced by 'no-image'.)"; }
|
|||
return array('error' => "BMP Image cannot be converted to suitable colour space - ".$file." - (Image replaced by 'no-image'.)");
|
|||
}
|
|||
$biXPelsPerMeter=$this->_fourbytes2int_le(substr($data,38,4)); // horizontal pixels per meter, usually set to zero
|
|||
//$biYPelsPerMeter=$this->_fourbytes2int_le(substr($data,42,4)); // vertical pixels per meter, usually set to zero
|
|||
$biXPelsPerMeter=round($biXPelsPerMeter/1000 *25.4);
|
|||
//$biYPelsPerMeter=round($biYPelsPerMeter/1000 *25.4);
|
|||
$info['set-dpi'] = $biXPelsPerMeter;
|
|||
switch ($biCompression){
|
|||
case 0:
|
|||
$str = substr($data,$bfOffBits);
|
|||
break;
|
|||
case 1: # BI_RLE8
|
|||
$str = $this->rle8_decode(substr($data,$bfOffBits), $width);
|
|||
break;
|
|||
case 2: # BI_RLE4
|
|||
$str = $this->rle4_decode(substr($data,$bfOffBits), $width);
|
|||
break;
|
|||
}
|
|||
$bmpdata = '';
|
|||
$padCnt = (4-ceil(($width/(8/$biBitCount)))%4)%4;
|
|||
switch ($biBitCount){
|
|||
case 1:
|
|||
case 4:
|
|||
case 8:
|
|||
$w = floor($width/(8/$biBitCount)) + ($width%(8/$biBitCount)?1:0);
|
|||
$w_row = $w + $padCnt;
|
|||
if ($flip){
|
|||
for ($y=0;$y<$height;$y++){
|
|||
$y0 = $y*$w_row;
|
|||
for ($x=0;$x<$w;$x++)
|
|||
$bmpdata .= $str[$y0+$x];
|
|||
}
|
|||
}else{
|
|||
for ($y=$height-1;$y>=0;$y--){
|
|||
$y0 = $y*$w_row;
|
|||
for ($x=0;$x<$w;$x++)
|
|||
$bmpdata .= $str[$y0+$x];
|
|||
}
|
|||
}
|
|||
break;
|
|||
case 16:
|
|||
$w_row = $width*2 + $padCnt;
|
|||
if ($flip){
|
|||
for ($y=0;$y<$height;$y++){
|
|||
$y0 = $y*$w_row;
|
|||
for ($x=0;$x<$width;$x++){
|
|||
$n = (ord( $str[$y0 + 2*$x + 1])*256 + ord( $str[$y0 + 2*$x]));
|
|||
$b = ($n & 31)<<3; $g = ($n & 992)>>2; $r = ($n & 31744)>>7128;
|
|||
$bmpdata .= chr($r) . chr($g) . chr($b);
|
|||
}
|
|||
}
|
|||
}else{
|
|||
for ($y=$height-1;$y>=0;$y--){
|
|||
$y0 = $y*$w_row;
|
|||
for ($x=0;$x<$width;$x++){
|
|||
$n = (ord( $str[$y0 + 2*$x + 1])*256 + ord( $str[$y0 + 2*$x]));
|
|||
$b = ($n & 31)<<3; $g = ($n & 992)>>2; $r = ($n & 31744)>>7;
|
|||
$bmpdata .= chr($r) . chr($g) . chr($b);
|
|||
}
|
|||
}
|
|||
}
|
|||
break;
|
|||
case 24:
|
|||
case 32:
|
|||
$byteCnt = $biBitCount/8;
|
|||
$w_row = $width*$byteCnt + $padCnt;
|
|||
if ($flip){
|
|||
for ($y=0;$y<$height;$y++){
|
|||
$y0 = $y*$w_row;
|
|||
for ($x=0;$x<$width;$x++){
|
|||
$i = $y0 + $x*$byteCnt ; # + 1
|
|||
$bmpdata .= $str[$i+2].$str[$i+1].$str[$i];
|
|||
}
|
|||
}
|
|||
}else{
|
|||
for ($y=$height-1;$y>=0;$y--){
|
|||
$y0 = $y*$w_row;
|
|||
for ($x=0;$x<$width;$x++){
|
|||
$i = $y0 + $x*$byteCnt ; # + 1
|
|||
$bmpdata .= $str[$i+2].$str[$i+1].$str[$i];
|
|||
}
|
|||
}
|
|||
}
|
|||
break;
|
|||
default:
|
|||
return array('error' => 'Error parsing BMP image - Unsupported image biBitCount');
|
|||
}
|
|||
if ($this->mpdf->compress) {
|
|||
$bmpdata=gzcompress($bmpdata);
|
|||
$info['f']='FlateDecode';
|
|||
}
|
|||
$info['data']=$bmpdata;
|
|||
$info['type']='bmp';
|
|||
return $info;
|
|||
}
|
|||
function _fourbytes2int_le($s) {
|
|||
//Read a 4-byte integer from string
|
|||
return (ord($s[3])<<24) + (ord($s[2])<<16) + (ord($s[1])<<8) + ord($s[0]);
|
|||
}
|
|||
function _twobytes2int_le($s) {
|
|||
//Read a 2-byte integer from string
|
|||
return (ord(substr($s, 1, 1))<<8) + ord(substr($s, 0, 1));
|
|||
}
|
|||
# Decoder for RLE8 compression in windows bitmaps
|
|||
# see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/bitmaps_6x0u.asp
|
|||
function rle8_decode ($str, $width){
|
|||
$lineWidth = $width + (3 - ($width-1) % 4);
|
|||
$out = '';
|
|||
$cnt = strlen($str);
|
|||
for ($i=0;$i<$cnt;$i++){
|
|||
$o = ord($str[$i]);
|
|||
switch ($o){
|
|||
case 0: # ESCAPE
|
|||
$i++;
|
|||
switch (ord($str[$i])){
|
|||
case 0: # NEW LINE
|
|||
$padCnt = $lineWidth - strlen($out)%$lineWidth;
|
|||
if ($padCnt<$lineWidth) $out .= str_repeat(chr(0), $padCnt); # pad line
|
|||
break;
|
|||
case 1: # END OF FILE
|
|||
$padCnt = $lineWidth - strlen($out)%$lineWidth;
|
|||
if ($padCnt<$lineWidth) $out .= str_repeat(chr(0), $padCnt); # pad line
|
|||
break 3;
|
|||
case 2: # DELTA
|
|||
$i += 2;
|
|||
break;
|
|||
default: # ABSOLUTE MODE
|
|||
$num = ord($str[$i]);
|
|||
for ($j=0;$j<$num;$j++)
|
|||
$out .= $str[++$i];
|
|||
if ($num % 2) $i++;
|
|||
}
|
|||
break;
|
|||
default:
|
|||
$out .= str_repeat($str[++$i], $o);
|
|||
}
|
|||
}
|
|||
return $out;
|
|||
}
|
|||
# Decoder for RLE4 compression in windows bitmaps
|
|||
# see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/bitmaps_6x0u.asp
|
|||
function rle4_decode ($str, $width){
|
|||
$w = floor($width/2) + ($width % 2);
|
|||
$lineWidth = $w + (3 - ( ($width-1) / 2) % 4);
|
|||
$pixels = array();
|
|||
$cnt = strlen($str);
|
|||
for ($i=0;$i<$cnt;$i++){
|
|||
$o = ord($str[$i]);
|
|||
switch ($o){
|
|||
case 0: # ESCAPE
|
|||
$i++;
|
|||
switch (ord($str[$i])){
|
|||
case 0: # NEW LINE
|
|||
while (count($pixels)%$lineWidth!=0)
|
|||
$pixels[]=0;
|
|||
break;
|
|||
case 1: # END OF FILE
|
|||
while (count($pixels)%$lineWidth!=0)
|
|||
$pixels[]=0;
|
|||
break 3;
|
|||
case 2: # DELTA
|
|||
$i += 2;
|
|||
break;
|
|||
default: # ABSOLUTE MODE
|
|||
$num = ord($str[$i]);
|
|||
for ($j=0;$j<$num;$j++){
|
|||
if ($j%2==0){
|
|||
$c = ord($str[++$i]);
|
|||
$pixels[] = ($c & 240)>>4;
|
|||
} else
|
|||
$pixels[] = $c & 15;
|
|||
}
|
|||
if ($num % 2) $i++;
|
|||
}
|
|||
break;
|
|||
default:
|
|||
$c = ord($str[++$i]);
|
|||
for ($j=0;$j<$o;$j++)
|
|||
$pixels[] = ($j%2==0 ? ($c & 240)>>4 : $c & 15);
|
|||
}
|
|||
}
|
|||
$out = '';
|
|||
if (count($pixels)%2) $pixels[]=0;
|
|||
$cnt = count($pixels)/2;
|
|||
for ($i=0;$i<$cnt;$i++)
|
|||
$out .= chr(16*$pixels[2*$i] + $pixels[2*$i+1]);
|
|||
return $out;
|
|||
}
|
|||
}
|
|||
?>
|