]>
Commit | Line | Data |
---|---|---|
4188f38a | 1 | <?php |
2 | ||
3 | class bmp { | |
4 | ||
5 | var $mpdf = null; | |
6 | ||
7 | function bmp(&$mpdf) { | |
8 | $this->mpdf = $mpdf; | |
9 | } | |
10 | ||
11 | ||
12 | function _getBMPimage($data, $file) { | |
13 | $info = array(); | |
14 | // Adapted from script by Valentin Schmidt | |
15 | // http://staff.dasdeck.de/valentin/fpdf/fpdf_bmp/ | |
16 | $bfOffBits=$this->_fourbytes2int_le(substr($data,10,4)); | |
17 | $width=$this->_fourbytes2int_le(substr($data,18,4)); | |
18 | $height=$this->_fourbytes2int_le(substr($data,22,4)); | |
19 | $flip = ($height<0); | |
20 | if ($flip) $height =-$height; | |
21 | $biBitCount=$this->_twobytes2int_le(substr($data,28,2)); | |
22 | $biCompression=$this->_fourbytes2int_le(substr($data,30,4)); | |
23 | $info = array('w'=>$width, 'h'=>$height); | |
24 | if ($biBitCount<16){ | |
25 | $info['cs'] = 'Indexed'; | |
26 | $info['bpc'] = $biBitCount; | |
27 | $palStr = substr($data,54,($bfOffBits-54)); | |
28 | $pal = ''; | |
29 | $cnt = strlen($palStr)/4; | |
30 | for ($i=0;$i<$cnt;$i++){ | |
31 | $n = 4*$i; | |
32 | $pal .= $palStr[$n+2].$palStr[$n+1].$palStr[$n]; | |
33 | } | |
34 | $info['pal'] = $pal; | |
35 | } | |
36 | else{ | |
37 | $info['cs'] = 'DeviceRGB'; | |
38 | $info['bpc'] = 8; | |
39 | } | |
40 | ||
41 | if ($this->mpdf->restrictColorSpace==1 || $this->mpdf->PDFX || $this->mpdf->restrictColorSpace==3) { | |
42 | if (($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'.)"; } | |
43 | return array('error' => "BMP Image cannot be converted to suitable colour space - ".$file." - (Image replaced by 'no-image'.)"); | |
44 | } | |
45 | ||
46 | $biXPelsPerMeter=$this->_fourbytes2int_le(substr($data,38,4)); // horizontal pixels per meter, usually set to zero | |
47 | //$biYPelsPerMeter=$this->_fourbytes2int_le(substr($data,42,4)); // vertical pixels per meter, usually set to zero | |
48 | $biXPelsPerMeter=round($biXPelsPerMeter/1000 *25.4); | |
49 | //$biYPelsPerMeter=round($biYPelsPerMeter/1000 *25.4); | |
50 | $info['set-dpi'] = $biXPelsPerMeter; | |
51 | ||
52 | switch ($biCompression){ | |
53 | case 0: | |
54 | $str = substr($data,$bfOffBits); | |
55 | break; | |
56 | case 1: # BI_RLE8 | |
57 | $str = $this->rle8_decode(substr($data,$bfOffBits), $width); | |
58 | break; | |
59 | case 2: # BI_RLE4 | |
60 | $str = $this->rle4_decode(substr($data,$bfOffBits), $width); | |
61 | break; | |
62 | } | |
63 | $bmpdata = ''; | |
64 | $padCnt = (4-ceil(($width/(8/$biBitCount)))%4)%4; | |
65 | switch ($biBitCount){ | |
66 | case 1: | |
67 | case 4: | |
68 | case 8: | |
69 | $w = floor($width/(8/$biBitCount)) + ($width%(8/$biBitCount)?1:0); | |
70 | $w_row = $w + $padCnt; | |
71 | if ($flip){ | |
72 | for ($y=0;$y<$height;$y++){ | |
73 | $y0 = $y*$w_row; | |
74 | for ($x=0;$x<$w;$x++) | |
75 | $bmpdata .= $str[$y0+$x]; | |
76 | } | |
77 | }else{ | |
78 | for ($y=$height-1;$y>=0;$y--){ | |
79 | $y0 = $y*$w_row; | |
80 | for ($x=0;$x<$w;$x++) | |
81 | $bmpdata .= $str[$y0+$x]; | |
82 | } | |
83 | } | |
84 | break; | |
85 | ||
86 | case 16: | |
87 | $w_row = $width*2 + $padCnt; | |
88 | if ($flip){ | |
89 | for ($y=0;$y<$height;$y++){ | |
90 | $y0 = $y*$w_row; | |
91 | for ($x=0;$x<$width;$x++){ | |
92 | $n = (ord( $str[$y0 + 2*$x + 1])*256 + ord( $str[$y0 + 2*$x])); | |
93 | $b = ($n & 31)<<3; $g = ($n & 992)>>2; $r = ($n & 31744)>>7128; | |
94 | $bmpdata .= chr($r) . chr($g) . chr($b); | |
95 | } | |
96 | } | |
97 | }else{ | |
98 | for ($y=$height-1;$y>=0;$y--){ | |
99 | $y0 = $y*$w_row; | |
100 | for ($x=0;$x<$width;$x++){ | |
101 | $n = (ord( $str[$y0 + 2*$x + 1])*256 + ord( $str[$y0 + 2*$x])); | |
102 | $b = ($n & 31)<<3; $g = ($n & 992)>>2; $r = ($n & 31744)>>7; | |
103 | $bmpdata .= chr($r) . chr($g) . chr($b); | |
104 | } | |
105 | } | |
106 | } | |
107 | break; | |
108 | ||
109 | case 24: | |
110 | case 32: | |
111 | $byteCnt = $biBitCount/8; | |
112 | $w_row = $width*$byteCnt + $padCnt; | |
113 | ||
114 | if ($flip){ | |
115 | for ($y=0;$y<$height;$y++){ | |
116 | $y0 = $y*$w_row; | |
117 | for ($x=0;$x<$width;$x++){ | |
118 | $i = $y0 + $x*$byteCnt ; # + 1 | |
119 | $bmpdata .= $str[$i+2].$str[$i+1].$str[$i]; | |
120 | } | |
121 | } | |
122 | }else{ | |
123 | for ($y=$height-1;$y>=0;$y--){ | |
124 | $y0 = $y*$w_row; | |
125 | for ($x=0;$x<$width;$x++){ | |
126 | $i = $y0 + $x*$byteCnt ; # + 1 | |
127 | $bmpdata .= $str[$i+2].$str[$i+1].$str[$i]; | |
128 | } | |
129 | } | |
130 | } | |
131 | break; | |
132 | ||
133 | default: | |
134 | return array('error' => 'Error parsing BMP image - Unsupported image biBitCount'); | |
135 | } | |
136 | if ($this->mpdf->compress) { | |
137 | $bmpdata=gzcompress($bmpdata); | |
138 | $info['f']='FlateDecode'; | |
139 | } | |
140 | $info['data']=$bmpdata; | |
141 | $info['type']='bmp'; | |
142 | return $info; | |
143 | } | |
144 | ||
145 | function _fourbytes2int_le($s) { | |
146 | //Read a 4-byte integer from string | |
147 | return (ord($s[3])<<24) + (ord($s[2])<<16) + (ord($s[1])<<8) + ord($s[0]); | |
148 | } | |
149 | ||
150 | function _twobytes2int_le($s) { | |
151 | //Read a 2-byte integer from string | |
152 | return (ord(substr($s, 1, 1))<<8) + ord(substr($s, 0, 1)); | |
153 | } | |
154 | ||
155 | ||
156 | # Decoder for RLE8 compression in windows bitmaps | |
157 | # see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/bitmaps_6x0u.asp | |
158 | function rle8_decode ($str, $width){ | |
159 | $lineWidth = $width + (3 - ($width-1) % 4); | |
160 | $out = ''; | |
161 | $cnt = strlen($str); | |
162 | for ($i=0;$i<$cnt;$i++){ | |
163 | $o = ord($str[$i]); | |
164 | switch ($o){ | |
165 | case 0: # ESCAPE | |
166 | $i++; | |
167 | switch (ord($str[$i])){ | |
168 | case 0: # NEW LINE | |
169 | $padCnt = $lineWidth - strlen($out)%$lineWidth; | |
170 | if ($padCnt<$lineWidth) $out .= str_repeat(chr(0), $padCnt); # pad line | |
171 | break; | |
172 | case 1: # END OF FILE | |
173 | $padCnt = $lineWidth - strlen($out)%$lineWidth; | |
174 | if ($padCnt<$lineWidth) $out .= str_repeat(chr(0), $padCnt); # pad line | |
175 | break 3; | |
176 | case 2: # DELTA | |
177 | $i += 2; | |
178 | break; | |
179 | default: # ABSOLUTE MODE | |
180 | $num = ord($str[$i]); | |
181 | for ($j=0;$j<$num;$j++) | |
182 | $out .= $str[++$i]; | |
183 | if ($num % 2) $i++; | |
184 | } | |
185 | break; | |
186 | default: | |
187 | $out .= str_repeat($str[++$i], $o); | |
188 | } | |
189 | } | |
190 | return $out; | |
191 | } | |
192 | ||
193 | # Decoder for RLE4 compression in windows bitmaps | |
194 | # see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/bitmaps_6x0u.asp | |
195 | function rle4_decode ($str, $width){ | |
196 | $w = floor($width/2) + ($width % 2); | |
197 | $lineWidth = $w + (3 - ( ($width-1) / 2) % 4); | |
198 | $pixels = array(); | |
199 | $cnt = strlen($str); | |
200 | for ($i=0;$i<$cnt;$i++){ | |
201 | $o = ord($str[$i]); | |
202 | switch ($o){ | |
203 | case 0: # ESCAPE | |
204 | $i++; | |
205 | switch (ord($str[$i])){ | |
206 | case 0: # NEW LINE | |
207 | while (count($pixels)%$lineWidth!=0) | |
208 | $pixels[]=0; | |
209 | break; | |
210 | case 1: # END OF FILE | |
211 | while (count($pixels)%$lineWidth!=0) | |
212 | $pixels[]=0; | |
213 | break 3; | |
214 | case 2: # DELTA | |
215 | $i += 2; | |
216 | break; | |
217 | default: # ABSOLUTE MODE | |
218 | $num = ord($str[$i]); | |
219 | for ($j=0;$j<$num;$j++){ | |
220 | if ($j%2==0){ | |
221 | $c = ord($str[++$i]); | |
222 | $pixels[] = ($c & 240)>>4; | |
223 | } else | |
224 | $pixels[] = $c & 15; | |
225 | } | |
226 | if ($num % 2) $i++; | |
227 | } | |
228 | break; | |
229 | default: | |
230 | $c = ord($str[++$i]); | |
231 | for ($j=0;$j<$o;$j++) | |
232 | $pixels[] = ($j%2==0 ? ($c & 240)>>4 : $c & 15); | |
233 | } | |
234 | } | |
235 | ||
236 | $out = ''; | |
237 | if (count($pixels)%2) $pixels[]=0; | |
238 | $cnt = count($pixels)/2; | |
239 | for ($i=0;$i<$cnt;$i++) | |
240 | $out .= chr(16*$pixels[2*$i] + $pixels[2*$i+1]); | |
241 | return $out; | |
242 | } | |
243 | ||
244 | ||
245 | ||
246 | } | |
247 | ||
248 | ?> |