Benjamin Southall
5 years ago
1 changed files with 159 additions and 0 deletions
@ -26,3 +26,162 @@ if (!function_exists('hash_equals')) { |
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return $answer === 0 && $olen === $tlen; |
return $answer === 0 && $olen === $tlen; |
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} |
} |
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} |
} |
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if (!function_exists('imagecreatefrombmp')) { |
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/*********************************************/ |
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/* Fonction: imagecreatefrombmp */ |
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/* Author: DHKold */ |
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/* Contact: [email protected] */ |
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/* Date: The 15th of June 2005 */ |
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/* Version: 2.0B */ |
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/*********************************************/ |
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function imagecreatefrombmp($filename) { |
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if (! $f1 = fopen($filename,"rb")) return FALSE; |
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$FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14)); |
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if ($FILE['file_type'] != 19778) return FALSE; |
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$BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'. |
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'/Vcompression/Vsize_bitmap/Vhoriz_resolution'. |
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'/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40)); |
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$BMP['colors'] = pow(2,$BMP['bits_per_pixel']); |
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if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset']; |
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$BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8; |
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$BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']); |
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$BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4); |
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$BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4); |
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$BMP['decal'] = 4-(4*$BMP['decal']); |
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if ($BMP['decal'] == 4) $BMP['decal'] = 0; |
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$PALETTE = array(); |
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if ($BMP['colors'] < 16777216) |
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{ |
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$PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4)); |
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} |
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$IMG = fread($f1,$BMP['size_bitmap']); |
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$VIDE = chr(0); |
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$res = imagecreatetruecolor($BMP['width'],$BMP['height']); |
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$P = 0; |
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$Y = $BMP['height']-1; |
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while ($Y >= 0) |
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{ |
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$X=0; |
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while ($X < $BMP['width']) |
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{ |
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if ($BMP['bits_per_pixel'] == 24) |
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$COLOR = unpack("V",substr($IMG,$P,3).$VIDE); |
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elseif ($BMP['bits_per_pixel'] == 16) |
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{ |
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$COLOR = unpack("n",substr($IMG,$P,2)); |
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$COLOR[1] = $PALETTE[$COLOR[1]+1]; |
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} |
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elseif ($BMP['bits_per_pixel'] == 8) |
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{ |
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$COLOR = unpack("n",$VIDE.substr($IMG,$P,1)); |
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$COLOR[1] = $PALETTE[$COLOR[1]+1]; |
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} |
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elseif ($BMP['bits_per_pixel'] == 4) |
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{ |
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$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1)); |
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if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F); |
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$COLOR[1] = $PALETTE[$COLOR[1]+1]; |
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} |
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elseif ($BMP['bits_per_pixel'] == 1) |
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{ |
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$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1)); |
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if (($P*8)%8 == 0) $COLOR[1] = $COLOR[1] >>7; |
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elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6; |
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elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5; |
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elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4; |
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elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3; |
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elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2; |
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elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1; |
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elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1); |
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$COLOR[1] = $PALETTE[$COLOR[1]+1]; |
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} |
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else |
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return FALSE; |
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imagesetpixel($res,$X,$Y,$COLOR[1]); |
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$X++; |
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$P += $BMP['bytes_per_pixel']; |
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} |
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$Y--; |
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$P+=$BMP['decal']; |
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} |
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fclose($f1); |
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return $res; |
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} |
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} |
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if (!function_exists('imagebmp')) { |
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function imagebmp(&$img, $filename='') { |
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$widthOrig = imagesx($img); |
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$widthFloor = ((floor($widthOrig/16))*16); |
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$widthCeil = ((ceil($widthOrig/16))*16); |
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$height = imagesy($img); |
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$size = ($widthCeil*$height*3)+54; |
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// Bitmap File Header |
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$result = 'BM'; // header (2b) |
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$result .= int_to_dword($size); // size of file (4b) |
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$result .= int_to_dword(0); // reserved (4b) |
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$result .= int_to_dword(54); // byte location in the file which is first byte of IMAGE (4b) |
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// Bitmap Info Header |
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$result .= int_to_dword(40); // Size of BITMAPINFOHEADER (4b) |
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$result .= int_to_dword($widthCeil); // width of bitmap (4b) |
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$result .= int_to_dword($height); // height of bitmap (4b) |
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$result .= int_to_word(1); // biPlanes = 1 (2b) |
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$result .= int_to_word(24); // biBitCount = {1 (mono) or 4 (16 clr ) or 8 (256 clr) or 24 (16 Mil)} (2b |
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$result .= int_to_dword(0); // RLE COMPRESSION (4b) |
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$result .= int_to_dword(0); // width x height (4b) |
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$result .= int_to_dword(0); // biXPelsPerMeter (4b) |
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$result .= int_to_dword(0); // biYPelsPerMeter (4b) |
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$result .= int_to_dword(0); // Number of palettes used (4b) |
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$result .= int_to_dword(0); // Number of important colour (4b) |
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// is faster than chr() |
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$arrChr = array(); |
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for ($i=0; $i<256; $i++){ |
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$arrChr[$i] = chr($i); |
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} |
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// creates image data |
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$bgfillcolor = array('red'=>0, 'green'=>0, 'blue'=>0); |
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// bottom to top - left to right - attention blue green red !!! |
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$y=$height-1; |
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for ($y2=0; $y2<$height; $y2++) { |
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for ($x=0; $x<$widthFloor; ) { |
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$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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} |
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for ($x=$widthFloor; $x<$widthCeil; $x++) { |
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$rgb = ($x<$widthOrig) ? imagecolorsforindex($img, imagecolorat($img, $x, $y)) : $bgfillcolor; |
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$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; |
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} |
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$y--; |
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} |
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// see imagegif |
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if ($filename == '') { |
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echo $result; |
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} else { |
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$file = fopen($filename, 'wb'); |
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fwrite($file, $result); |
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fclose($file); |
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} |
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} |
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// imagebmp helpers |
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function int_to_dword($n) { |
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return chr($n & 255).chr(($n >> 8) & 255).chr(($n >> 16) & 255).chr(($n >> 24) & 255); |
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} |
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function int_to_word($n) { |
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return chr($n & 255).chr(($n >> 8) & 255); |
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} |
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} |
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