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Converting files?

Marshalscienceguy
in Computer Science

Featured Replies

How do you turn a WEBP file

 

Into JPG, PNG, GIF and BMP files.

 

Those 3 are accepted on most websites but there is this one site that only does WEBP file and its very hard to convert. I generally save it in MSpaint to convert it but that does not always work. Is there another way to do it?

 

 

You can do so with php using the imagick and gd libraries. Imagick I am using for psd and tiff files. You can download and install imagick from here http://www.imagemagick.org/script/binary-releases.php#windowsit also comes with commandline options ie. convert "image.webp" "image.jpg" so you could make a .exe or regedit to convert files 

<?php
$filename='filename.bmp';
$outputfilename='filename.png';
function imagecreatefrombmp($filename)
{
//Ouverture du fichier en mode binaire
   if (! $f1 = fopen($filename,"rb")) return FALSE;

//1 : Chargement des ent?tes FICHIER
   $FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
   if ($FILE['file_type'] != 19778) return FALSE;

//2 : Chargement des ent?tes BMP
   $BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
                 '/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
                 '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($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;

//3 : Chargement des couleurs de la palette
   $PALETTE = array();
   if ($BMP['colors'] < 16777216)
   {
    $PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
   }

//4 : Cr?ation de l'image
   $IMG = fread($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'];
   }

//Fermeture du fichier
   fclose($f1);

return $res;
}


switch(image_type_to_extension(exif_imagetype($filename),true)){
case ".png":
    $image = imagecreatefrompng($filename);break;
case ".gif":
    $image = imagecreatefromgif($filename);break;
case ".jpg":
    $image = imagecreatefromjpeg($filename);break;
case ".psd":
    $im = new Imagick($filename);
    $im->flattenImages();
    $im->setImageFormat('jpg');
    $im->writeImage('test.jpg');
    imagecreatefromjpeg('test.jpg');
    break;
case ".bmp":
    $image = imagecreatefrombmp($filename);break;
case ".tiff":
    $im = new Imagick($filename);
    $im->flattenImages();
    $im->setImageFormat('jpg');
    $im->writeImage('test.jpg');
    imagecreatefromjpeg('test.jpg');break;
case ".gd2":
    $image = imagecreatefromgd2($filename);break;
case ".webp":
    $image = imagecreatefromwebp($filename);break;
case ".wbmp":
    $image = imagecreatefromwbmp($filename);break;
case ".xbm":
    $image = imagecreatefromxbm($filename);break;
case ".xpm":
    $image = imagecreatefromxpm($filename);break;
}
if(isset($image)){
imagepng($image, 'recipies.png');
imagedestroy($image);
}
?>

Edited by fiveworlds

  • 3 months later...

 

You can do so with php using the imagick and gd libraries. Imagick I am using for psd and tiff files. You can download and install imagick from here http://www.imagemagick.org/script/binary-releases.php#windowsit also comes with commandline options ie. convert "image.webp" "image.jpg" so you could make a .exe or regedit to convert files

<?php
$filename='filename.bmp';
$outputfilename='filename.png';
function imagecreatefrombmp($filename)
{
//Ouverture du fichier en mode binaire
   if (! $f1 = fopen($filename,"rb")) return FALSE;

//1 : Chargement des ent?tes FICHIER
   $FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
   if ($FILE['file_type'] != 19778) return FALSE;

//2 : Chargement des ent?tes BMP
   $BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
                 '/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
                 '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($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;

//3 : Chargement des couleurs de la palette
   $PALETTE = array();
   if ($BMP['colors'] < 16777216)
   {
    $PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
   }

//4 : Cr?ation de l'image
   $IMG = fread($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'];
   }

//Fermeture du fichier
   fclose($f1);

return $res;
}


switch(image_type_to_extension(exif_imagetype($filename),true)){
case ".png":
    $image = imagecreatefrompng($filename);break;
case ".gif":
    $image = imagecreatefromgif($filename);break;
case ".jpg":
    $image = imagecreatefromjpeg($filename);break;
case ".psd":
    $im = new Imagick($filename);
    $im->flattenImages();
    $im->setImageFormat('jpg');
    $im->writeImage('test.jpg');
    imagecreatefromjpeg('test.jpg');
    break;
case ".bmp":
    $image = imagecreatefrombmp($filename);break;
case ".tiff":
    $im = new Imagick($filename);
    $im->flattenImages();
    $im->setImageFormat('jpg');
    $im->writeImage('test.jpg');
    imagecreatefromjpeg('test.jpg');break;
case ".gd2":
    $image = imagecreatefromgd2($filename);break;
case ".webp":
    $image = imagecreatefromwebp($filename);break;
case ".wbmp":
    $image = imagecreatefromwbmp($filename);break;
case ".xbm":
    $image = imagecreatefromxbm($filename);break;
case ".xpm":
    $image = imagecreatefromxpm($filename);break;
}
if(isset($image)){
imagepng($image, 'recipies.png');
imagedestroy($image);
}
?>

Thank you so much:)

I actually created a few executables to get around the need for installing imagemagick or the gd library.

 

https://github.com/davidmather/imagetobmp/blob/master/bin/Release/imagetobmp.exe?raw=true

https://github.com/davidmather/imagetoemf/blob/master/imagetoemf/bin/Debug/imagetoemf.exe?raw=true

https://github.com/davidmather/imagetoexif/blob/master/imagetoexif/bin/Debug/imagetoexif.exe?raw=true

https://github.com/davidmather/imagetogif/blob/master/imagetogif/bin/Debug/imagetogif.exe?raw=true

https://github.com/davidmather/imagetojpg/blob/master/imagetojpg/bin/Debug/imagetojpg.exe?raw=true

https://github.com/davidmather/imagetoicon/blob/master/imagetoicon/bin/Debug/imagetoicon.exe?raw=true

 

Which run as

<?php
exec(exename inputfilename outputfilename);
?>

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