get image from hexa string - php

Question

I work with python 2.7
I I've a string in DB that represente a image in Hexa. Exemple
sdata = "789C9D953D56C52010856363696D49E90AAC73ECDD4396C25228B210CE711B2CC2CAC622CECC9D0C0321313A27E411123EEEFCC07B7BFF7A9CC45EA9BD507BD6F620F769CAF4FEE3096DB76DDACEAEE9865D4CF79C6DAB34F46D441F7F23F88F6F728E6AD794724EDD5CBB9B790EF53FBF1595D9524C517E93CDEA3A433D984E83440327B318B633BF867A4C12734A5654CE26F24F29AB28704A067685363C665B0582D30ADF0F39A2717F3979C9412A6108A1D731C6992C04BD96252ECB9A2AC4A60F2B07904AA8166C84B51545D172C3C8D02B4CA3D51D841F7584B5CD2E17E2698A5DDE991302AD6240189666558242122D68F1C0F19F99475104D0F7C6216D5A6665AFAED62F8A27730A57E3BC4858669D25716B387BA04E39B41059BCC7E99CEAF4B05F971C75AAB0181AE938111CA9DB9A71C9B5443EA000D4231183A4F8ECEF79E7E5B40E2DEF647BDEA9AB6250EA59F70B6AC90E9FAABFB7D040E43C010107D4F1086A4ADA6D8DA66C8AEDD9C10E3514196A0F060220B59825C843883F5D71A67586809FEDF17FFCD75C4CFC012B43550B"
Now, i want to create the image using this string. I juste know that the image is 24x24 BMP (or PNG?) image.
I know the php code to get it, but not the python.
php :
function imagecreatefrombmpstring($im) {
$header = unpack("vtype/Vsize/v2reserved/Voffset", substr($im, 0, 14));
$info = unpack("Vsize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vncolor/Vimportant", substr($im, 14, 40));
extract($info);
extract($header);
if($type != 0x4D42)
return false;
$palette_size = $offset - 54;
$ncolor = $palette_size / 4;
$imres=imagecreatetruecolor($width, $height);
imagealphablending($imres, false);
imagesavealpha($imres, true);
$pal=array();
if($palette_size) {
$palette = substr($im, 54, $palette_size);
$gd_palette = "";
$j = 0; $n = 0;
while($j < $palette_size) {
$b = ord($palette{$j++});
$g = ord($palette{$j++});
$r = ord($palette{$j++});
$a = ord($palette{$j++});
if ( ($r == 255) && ($g == 0) && ($b == 255))
$a = 127; // alpha = 255 on 0xFF00FF
$pal[$n++] = imagecolorallocatealpha($imres, $r, $g, $b, $a);
}
}
$scan_line_size = (($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--) {
$scan_line = substr($im, $offset + (($scan_line_size + $scan_line_align) * $l), $scan_line_size);
if($bits == 24) {
$j = 0; $n = 0;
while($j < $scan_line_size) {
$b = ord($scan_line{$j++});
$g = ord($scan_line{$j++});
$r = ord($scan_line{$j++});
$a = 0;
if ( ($r == 255) && ($g == 0) && ($b == 255))
$a = 127; // alpha = 255 on 0xFF00FF
$col=imagecolorallocatealpha($imres, $r, $g, $b, $a);
imagesetpixel($imres, $n++, $i, $col);
}
}
else if($bits == 8) {
$j = 0;
while($j < $scan_line_size) {
$col = $pal[ord($scan_line{$j++})];
imagesetpixel($imres, $j-1, $i, $col);
}
}
else if($bits == 4) {
$j = 0; $n = 0;
while($j < $scan_line_size) {
$byte = ord($scan_line{$j++});
$p1 = $byte >> 4;
$p2 = $byte & 0x0F;
imagesetpixel($imres, $n++, $i, $pal[$p1]);
imagesetpixel($imres, $n++, $i, $pal[$p2]);
}
}
else if($bits == 1) {
$j = 0; $n = 0;
while($j < $scan_line_size) {
$byte = ord($scan_line{$j++});
$p1 = (int) (($byte & 0x80) != 0);
$p2 = (int) (($byte & 0x40) != 0);
$p3 = (int) (($byte & 0x20) != 0);
$p4 = (int) (($byte & 0x10) != 0);
$p5 = (int) (($byte & 0x08) != 0);
$p6 = (int) (($byte & 0x04) != 0);
$p7 = (int) (($byte & 0x02) != 0);
$p8 = (int) (($byte & 0x01) != 0);
imagesetpixel($imres, $n++, $i, $pal[$p1]);
imagesetpixel($imres, $n++, $i, $pal[$p2]);
imagesetpixel($imres, $n++, $i, $pal[$p3]);
imagesetpixel($imres, $n++, $i, $pal[$p4]);
imagesetpixel($imres, $n++, $i, $pal[$p5]);
imagesetpixel($imres, $n++, $i, $pal[$p6]);
imagesetpixel($imres, $n++, $i, $pal[$p7]);
imagesetpixel($imres, $n++, $i, $pal[$p8]);
}
}
}
return $imres;
}
$data = #gzuncompress(pack('H*', $sdata));
$image = imagecreatefrombmpstring($data);
I find this code on http://code.google.com/p/fluxcp/source/browse/branches/fluxcp-1.0/modules/guild/emblem.php?r=696
Can you help me.
EDIT::
A solution
from binascii import unhexlify
import zlib
import Image
from cStringIO import StringIO
data = StringIO(zlib.decompress(unhexlify(sdata)))
i = Image.open(data)
i.show()

Answer 1

The solution (in collaboration with OP) is:
import PIL
from binascii import unhexlify
import zlib
from cStringIO import StringIO
sdata = "789C9D953D56C52010856363696D49E90AAC73ECDD4396C25228B210CE711B2CC2CAC622CECC9D0C0321313A27E411123EEEFCC07B7BFF7A9CC45EA9BD507BD6F620F769CAF4FEE3096DB76DDACEAEE9865D4CF79C6DAB34F46D441F7F23F88F6F728E6AD794724EDD5CBB9B790EF53FBF1595D9524C517E93CDEA3A433D984E83440327B318B633BF867A4C12734A5654CE26F24F29AB28704A067685363C665B0582D30ADF0F39A2717F3979C9412A6108A1D731C6992C04BD96252ECB9A2AC4A60F2B07904AA8166C84B51545D172C3C8D02B4CA3D51D841F7584B5CD2E17E2698A5DDE991302AD6240189666558242122D68F1C0F19F99475104D0F7C6216D5A6665AFAED62F8A27730A57E3BC4858669D25716B387BA04E39B41059BCC7E99CEAF4B05F971C75AAB0181AE938111CA9DB9A71C9B5443EA000D4231183A4F8ECEF79E7E5B40E2DEF647BDEA9AB6250EA59F70B6AC90E9FAABFB7D040E43C010107D4F1086A4ADA6D8DA66C8AEDD9C10E3514196A0F060220B59825C843883F5D71A67586809FEDF17FFCD75C4CFC012B43550B"
fh = StringIO(zlib.decompress(unhexlify(sdata)))
image = PIL.Image.open(fh)
PIL is the Python Imaging Library, and using StringIO, I pretend to have a file-like object.