imagecreatefrom[BMP]

@GUIROct 26.2008

Hi,

I developed a GD based function to add watermark to images and I wanted to make that available for many image types as much as possible. 🙂

JPG, GIF, PNG all works fine. But with BMP images, it is not recognized as an image.

We see functions as imagecreatefromjpeg, imagecreatefromgif, imagecreatefrompng.

But not a function imagecreatefrombmp() …

I tried to use imagecreatefromwbmp , but useless ; no error shown, but when goes to other functions such as imagesx , imagesy it says not valid ..

Do GD really support bmp ? If so how?

Thanks and Best Regards

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PHP

7 Comments(s) _↴

@scragarOct 26.2008 — #Isn't it wbmp, [B]W[/B]indows [B]B[/B]it[B]M[/B]a[B]P[/B]?

[code=php]
 $image = imagecreatefromwbmp($file);
 [/code]

http://php.net/imagecreatefromwbmp

@GUIRauthorOct 26.2008 — #Hi!,

Its not working with imagecreatefromwbmp() also.

I am using the following function.

[code=php]        public function waterMark($orgPath)
 {
 $imagesource =  $orgPath;
 //echo $imagesource;
 $filetype = $this->getType($orgPath);
 //echo $filetype;
 if($filetype == "gif")
 $image = imagecreatefromgif($imagesource);
 
   if($filetype == "jpg")
   $image = imagecreatefromjpeg($imagesource);
 
   if($filetype == "jpeg")
   $image = imagecreatefromjpeg($imagesource);
 
   if($filetype == "png")
   $image = imagecreatefrompng($imagesource);
 
   if($filetype == "bmp")
   $image = imagecreatefromwbmp($imagesource);
 
   //if (!$image) die();
 
   $watermark = @imagecreatefromgif('images/watermark.gif');
 
   $imagewidth = imagesx($image);
   $imageheight = imagesy($image);
 
   $watermarkwidth =  imagesx($watermark);
   $watermarkheight =  imagesy($watermark);
 
   $startwidth = (($imagewidth - $watermarkwidth) );
   $startheight = (($imageheight - $watermarkheight) );
 
   imagecopy($image, $watermark,  $startwidth, $startheight, 0, 0, $watermarkwidth, $watermarkheight);
 
   $destPath = 'fs_tempWk/'.$orgPath.'.'.$this->getType($orgPath);
 
 
   if($filetype == "gif")
   imagegif($image,$destPath);
 
   if($filetype == "jpg")
   imagejpeg($image,$destPath,100);
 
   if($filetype == "jpeg")
   imagejpeg($image,$destPath,100);
 
   if($filetype == "png")
   imagepng($image,$destPath);
 
   if($filetype == "bmp")
   imagewbmp($image,$destPath);
 
   imagedestroy($image);
   imagedestroy($watermark);
 
   }[/code]

When implemented,

[code=php]require_once('class.Image.php');
 
 $i = new Image();
 
 $i->waterMark('sunFire.bmp');[/code]

I get following errors, but for other image types everything works fine.

[FONT="Courier New"][SIZE="2"]Warning: imagecreatefromwbmp() [function.imagecreatefromwbmp]: 'sunFire.bmp' is not a valid WBMP file in /home/apg/public_html/abc-def-ghi/test/gd/watermark/class.Image.php on line 411

Warning: imagesx(): supplied argument is not a valid Image resource in /home/apg/public_html/abc-def-ghi/test/gd/watermark/class.Image.php on line 417

Warning: imagesy(): supplied argument is not a valid Image resource in /home/apg/public_html/abc-def-ghi/test/gd/watermark/class.Image.php on line 418

Warning: imagecopy(): supplied argument is not a valid Image resource in /home/apg/public_html/abc-def-ghi/test/gd/watermark/class.Image.php on line 426

Warning: imagewbmp(): supplied argument is not a valid Image resource in /home/apg/public_html/abc-def-ghi/test/gd/watermark/class.Image.php on line 444

Warning: imagedestroy(): supplied argument is not a valid Image resource in /home/apg/public_html/abc-def-ghi/test/gd/watermark/class.Image.php on line 446[/SIZE][/FONT]

Thanks and Best Regards

@scragarOct 26.2008 — #ooh, my mistake, reading the docs now I see the problem, wBMP is wireless bitmap, not windows.

use bmp2png to get them in PNG format first, then you can use them.

http://cetus.sakura.ne.jp/softlab/b2p-home/

@GUIRauthorOct 26.2008 — #Thanks for the information, I am going to test bmp2png .

@putaNov 23.2008 — #ENJOY THIS FUNCTION MY LITTLE FRIENDS!!!! =D

By Puta from BR :eek:

[code=php]<?php
 function ImageCreateFromBMP($filename)
 {
 if (! $f1 = fopen($filename,"rb")) return FALSE;
 $FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
 if ($FILE['file_type'] != 19778) return FALSE;
 $BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
 '/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
 '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40));
 $BMP['colors'] = pow(2,$BMP['bits_per_pixel']);
 if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset'];
 $BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8;
 $BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']);
 $BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4);
 $BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4);
 $BMP['decal'] = 4-(4*$BMP['decal']);
 if ($BMP['decal'] == 4) $BMP['decal'] = 0;
 $PALETTE = array();
 if ($BMP['colors'] < 16777216)
 {
 $PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
 }
 $IMG = fread($f1,$BMP['size_bitmap']);
 $VIDE = chr(0);
 $res = imagecreatetruecolor($BMP['width'],$BMP['height']);
 $P = 0;
 $Y = $BMP['height']-1;
 while ($Y >= 0)
 {
 $X=0;
 while ($X < $BMP['width'])
 {
 if ($BMP['bits_per_pixel'] == 24)
 $COLOR = unpack("V",substr($IMG,$P,3).$VIDE);
 elseif ($BMP['bits_per_pixel'] == 16)
 { 

 $COLOR = unpack("n",substr($IMG,$P,2));
 $COLOR[1] = $PALETTE[$COLOR[1]+1];
 }
 elseif ($BMP['bits_per_pixel'] == 8)
 { 

 $COLOR = unpack("n",$VIDE.substr($IMG,$P,1));
 $COLOR[1] = $PALETTE[$COLOR[1]+1];
 }
 elseif ($BMP['bits_per_pixel'] == 4)
 {
 $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
 if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F);
 $COLOR[1] = $PALETTE[$COLOR[1]+1];
 }
 elseif ($BMP['bits_per_pixel'] == 1)
 {
 $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
 if     (($P*8)%8 == 0) $COLOR[1] =  $COLOR[1]        >>7;
 elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6;
 elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5;
 elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4;
 elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3;
 elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2;
 elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1;
 elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1);
 $COLOR[1] = $PALETTE[$COLOR[1]+1];
 }
 else
 return FALSE;
 imagesetpixel($res,$X,$Y,$COLOR[1]);
 $X++;
 $P += $BMP['bytes_per_pixel'];
 }
 $Y--;
 $P+=$BMP['decal'];
 }
 fclose($f1);
 return $res;
 }
 ?>
 [/code]

@hyperliskNov 23.2008 — #Here's a nice set of functions I use, I don't remember who made them though...

[code=php]<?php
 function ConvertBMP2GD($src, $dest = false) {
 if (!($src_f = fopen($src, "rb"))) {
 return false;
 }
 if (!($dest_f = fopen($dest, "wb"))) {
 return false;
 }
 $header = unpack("vtype/Vsize/v2reserved/Voffset", fread($src_f, 14));
 $info = unpack("Vsize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vncolor/Vimportant", fread($src_f, 40));
 
   extract($info);
   extract($header);
 
   if ($type != 0x4D42) {
   // signature "BM"
   return false;
   }
 
   $palette_size = $offset - 54;
   $ncolor = $palette_size / 4;
   $gd_header = "";
   // true-color vs. palette
   $gd_header .= ($palette_size == 0) ? "xFFxFE" : "xFFxFF";
   $gd_header .= pack("n2", $width, $height);
   $gd_header .= ($palette_size == 0) ? "x01" : "x00";
   if ($palette_size) {
   $gd_header .= pack("n", $ncolor);
   }
   // no transparency
   $gd_header .= "xFFxFFxFFxFF";
 
   fwrite($dest_f, $gd_header);
 
   if ($palette_size) {
   $palette = fread($src_f, $palette_size);
   $gd_palette = "";
   $j = 0;
   while ($j < $palette_size) {
   $b = $palette{$j++};
   $g = $palette{$j++};
   $r = $palette{$j++};
   $a = $palette{$j++};
   $gd_palette .= "$r$g$b$a";
   }
   $gd_palette .= str_repeat("x00x00x00x00", 256 - $ncolor);
   fwrite($dest_f, $gd_palette);
   }
 
   $scan_line_size = (($bits * $width) + 7) >> 3;
   $scan_line_align = ($scan_line_size & 0x03) ? 4 - ($scan_line_size & 0x03) : 0;
 
   for ($i = 0, $l = $height - 1; $i < $height; $i++, $l--) {
   // BMP stores scan lines starting from bottom
   fseek($src_f, $offset + (($scan_line_size + $scan_line_align) * $l));
   $scan_line = fread($src_f, $scan_line_size);
   if ($bits == 24) {
   $gd_scan_line = "";
   $j = 0;
   while ($j < $scan_line_size) {
   $b = $scan_line{$j++};
   $g = $scan_line{$j++};
   $r = $scan_line{$j++};
   $gd_scan_line .= "x00$r$g$b";
   }
   } elseif ($bits == 8) {
   $gd_scan_line = $scan_line;
   } elseif ($bits == 4) {
   $gd_scan_line = "";
   $j = 0;
   while ($j < $scan_line_size) {
   $byte = ord($scan_line{$j++});
   $p1 = chr($byte >> 4);
   $p2 = chr($byte & 0x0F);
   $gd_scan_line .= "$p1$p2";
   }
   $gd_scan_line = substr($gd_scan_line, 0, $width);
   } elseif ($bits == 1) {
   $gd_scan_line = "";
   $j = 0;
   while ($j < $scan_line_size) {
   $byte = ord($scan_line{$j++});
   $p1 = chr((int)(($byte & 0x80) != 0));
   $p2 = chr((int)(($byte & 0x40) != 0));
   $p3 = chr((int)(($byte & 0x20) != 0));
   $p4 = chr((int)(($byte & 0x10) != 0));
   $p5 = chr((int)(($byte & 0x08) != 0));
   $p6 = chr((int)(($byte & 0x04) != 0));
   $p7 = chr((int)(($byte & 0x02) != 0));
   $p8 = chr((int)(($byte & 0x01) != 0));
   $gd_scan_line .= "$p1$p2$p3$p4$p5$p6$p7$p8";
   }
   $gd_scan_line = substr($gd_scan_line, 0, $width);
   }
 
   fwrite($dest_f, $gd_scan_line);
   }
   fclose($src_f);
   fclose($dest_f);
   return true;
 }
 
 function imagebmp ($im, $fn = false){
 if (!$im) return false;
 
  if ($fn === false) $fn = 'php://output';
  $f = fopen ($fn, "w");
  if (!$f) return false;
 
  //Image dimensions
  $biWidth = imagesx ($im);
  $biHeight = imagesy ($im);
  $biBPLine = $biWidth * 3;
  $biStride = ($biBPLine + 3) & ~3;
  $biSizeImage = $biStride * $biHeight;
  $bfOffBits = 54;
  $bfSize = $bfOffBits + $biSizeImage;
 
  //BITMAPFILEHEADER
  fwrite ($f, 'BM', 2);
  fwrite ($f, pack ('VvvV', $bfSize, 0, 0, $bfOffBits));
 
  //BITMAPINFO (BITMAPINFOHEADER)
  fwrite ($f, pack ('VVVvvVVVVVV', 40, $biWidth, $biHeight, 1, 24, 0, $biSizeImage, 0, 0, 0, 0));
 
  $numpad = $biStride - $biBPLine;
  for ($y = $biHeight - 1; $y >= 0; --$y)
  {
   for ($x = 0; $x < $biWidth; ++$x)
   {
   $col = imagecolorat ($im, $x, $y);
   fwrite ($f, pack ('V', $col), 3);
   }
   for ($i = 0; $i < $numpad; ++$i)
   fwrite ($f, pack ('C', 0));
  }
  fclose($f);
  return true;
 }
 
 function imagecreatefrombmp($filename) {
 $tmp_name = tempnam("./temp_files", "GD");
 if (ConvertBMP2GD($filename, $tmp_name)) {
 $img = imagecreatefromgd($tmp_name);
 unlink($tmp_name);
 return $img;
 }
 return false;
 }
 
 ?>[/code]

@GUIRauthorNov 24.2008 — #?

Hi, thanks guys

Though somepoints are Greek to me yet, with my less experience, I am really going to try this out.

?

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