248 lines
7.7 KiB
PHP
Executable File
248 lines
7.7 KiB
PHP
Executable File
<?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;
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
?>
|