from:"vincent dot k dot hughitt at nasa dot gov"

#48123 [Bgs]: imagecolorset() misbehaves in newer versions of PHP

2009-05-01 Thread vincent dot k dot hughitt at nasa dot gov

 ID:   48123
 User updated by:  vincent dot k dot hughitt at nasa dot gov
 Reported By:  vincent dot k dot hughitt at nasa dot gov
 Status:   Bogus
 Bug Type: GD related
 Operating System: *
 PHP Version:  5.2.6-3
 Assigned To:  pajoye
 New Comment:

Using true grayscale images as input did the trick. Thank you for the
advice pajoye.

Keep up the great work!


Previous Comments:


[2009-05-01 12:17:23] paj...@php.net

hi,

There is no bug, the difference is actually a bug fix in how GD managed
PNG Grayscale images. When the grayscale image has an alpha component
(PNG_COLOR_TYPE_GRAY_ALPHA), a truecolor image is created. 

If you use a real grayscale only image the resulting image will still
be a palette image. For example:

http://pierre.libgd.org/48123_eit_real_grayscale.png

is a grayscale only image and works as you expect. It is not a bug,
however next version of GD will support grayscale images as internal
formats, that will greatly ease this kind of transformation.



[2009-04-30 19:37:17] vincent dot k dot hughitt at nasa dot gov

Okay, got same result on Ubuntu 9.04 using compiled PHP + Bundled GD:

PHP 5.2.6-3ubuntu4.1, GD bundled (2.0.34 compatible)



[2009-04-30 19:12:37] j...@php.net

Verified with latest CVS, using bundled GD library.



[2009-04-30 18:11:51] vincent dot k dot hughitt at nasa dot gov

Hi Pajoye,

Thanks for the feedback. I did not know that about Ubuntu/Fedora's
packaged versions of GD. I will try downloading and compiling PHP from
source and see if I run into the same issues, and post my results here.

If you start with the images:

http://launchpadlibrarian.net/26034594/eit_grayscale.png
http://launchpadlibrarian.net/26034597/ctable_eit304.png

The expected output of the script is:

http://launchpadlibrarian.net/26034598/eit_final_ubuntu810.jpg

which is a COLOR image. The problem is that using newer version of PHP,
the result is a GRAYSCALE image.



[2009-04-30 17:33:11] paj...@php.net

and what do you expect as "correct" result? for this script.

And please not that both Debian and Ubuntu do not use the bundled GD as
it is recommended and the GD version they use is in a poor state (ubuntu
being less worst).

Please try the same using a normal php too, compiling it with the
bundled GD.



The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/48123

-- 
Edit this bug report at http://bugs.php.net/?id=48123&edit=1

#48123 [Asn]: imagecolorset no longer behaving properly in newer versions of PHP

2009-04-30 Thread vincent dot k dot hughitt at nasa dot gov

 ID:   48123
 User updated by:  vincent dot k dot hughitt at nasa dot gov
 Reported By:  vincent dot k dot hughitt at nasa dot gov
 Status:   Assigned
 Bug Type: GD related
 Operating System: *
-PHP Version:  5.*, 6CVS (2009-04-30)
+PHP Version:  5.2.6-3
 Assigned To:  pajoye
 New Comment:

Okay, got same result on Ubuntu 9.04 using compiled PHP + Bundled GD:

PHP 5.2.6-3ubuntu4.1, GD bundled (2.0.34 compatible)


Previous Comments:


[2009-04-30 19:12:37] j...@php.net

Verified with latest CVS, using bundled GD library.



[2009-04-30 18:11:51] vincent dot k dot hughitt at nasa dot gov

Hi Pajoye,

Thanks for the feedback. I did not know that about Ubuntu/Fedora's
packaged versions of GD. I will try downloading and compiling PHP from
source and see if I run into the same issues, and post my results here.

If you start with the images:

http://launchpadlibrarian.net/26034594/eit_grayscale.png
http://launchpadlibrarian.net/26034597/ctable_eit304.png

The expected output of the script is:

http://launchpadlibrarian.net/26034598/eit_final_ubuntu810.jpg

which is a COLOR image. The problem is that using newer version of PHP,
the result is a GRAYSCALE image.



[2009-04-30 17:33:11] paj...@php.net

and what do you expect as "correct" result? for this script.

And please not that both Debian and Ubuntu do not use the bundled GD as
it is recommended and the GD version they use is in a poor state (ubuntu
being less worst).

Please try the same using a normal php too, compiling it with the
bundled GD.



[2009-04-30 16:46:10] vincent dot k dot hughitt at nasa dot gov

Description:

I wrote a small piece of code using that uses the GD module to apply a
color-table to a gray-scale image.

In newer versions of PHP, however, the script only outputs grayscale
images, with no error message.

Furthermore, outputting the contents of imagecolorsforindex shows that
the script is still reading the palette properly, so it must have
something to do with the next step (imagecolorset).

Any ideas?

===
System 1 (non-working): 

Ubuntu 9.04 Linux 2.6.28-11-generic
PHP 5.2.6-3ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 23
2009 14:35:05)
gd 2.0.36~rc1~dfsg-3ubuntu1

===

System 2 (non-working):

Fedora 11 Beta Linux 2.6.29.1-111.fc11.i586
PHP 5.2.9
gd 2.0.35

===

System 3 (WORKING):
Ubuntu 8.10 Linux 2.6.27-11-generic
PHP 5.2.6-2ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Feb 11
2009 20:38:24)
gd 2.0.36~rc1~dfsg-3ubuntu1

===

(Originally reported downstream at:
https://bugs.edge.launchpad.net/ubuntu/+source/php5/+bug/368036)

Reproduce code:
---
/**
 * Takes a grayscale PNG and modifies it's index to use 256-color 
 * lookup table then outputs it as an 8-bit JPEG image, or 8-bit 
 * paletted PNG.
 *
 * Sample image and color-table:
 *
 * http://launchpadlibrarian.net/26034594/eit_grayscale.png
 * http://launchpadlibrarian.net/26034597/ctable_eit304.png
 */

$gd = imagecreatefrompng("eit_grayscale.png");
$ctable = imagecreatefrompng("ctable_eit304.png");

for ($i = 0; $i <= 255; $i++) {
 $rgba = imagecolorsforindex($ctable, $i);
 imagecolorset($gd, $i, $rgba["red"], $rgba["green"], $rgba["blue"]);
}

imagejpeg($gd, "eit_final.jpg", 75);
imagedestroy($gd);
imagedestroy($ctable);

Expected result:

Outputs a 8-bit color JPEG.
(http://launchpadlibrarian.net/26034598/eit_final_ubuntu810.jpg)

Actual result:
--
Outputs a 8-bit grayscale JPEG.
(http://launchpadlibrarian.net/26034602/eit_final_ubuntu904.jpg)





-- 
Edit this bug report at http://bugs.php.net/?id=48123&edit=1

#48123 [Fbk->Opn]: imagecolorset no longer behaving properly in newer versions of PHP

2009-04-30 Thread vincent dot k dot hughitt at nasa dot gov

 ID:   48123
 User updated by:  vincent dot k dot hughitt at nasa dot gov
 Reported By:  vincent dot k dot hughitt at nasa dot gov
-Status:   Feedback
+Status:   Open
 Bug Type: GD related
 Operating System: Ubuntu 9.04, Fedora 11
 PHP Version:  5.2.9
 New Comment:

Hi Pajoye,

Thanks for the feedback. I did not know that about Ubuntu/Fedora's
packaged versions of GD. I will try downloading and compiling PHP from
source and see if I run into the same issues, and post my results here.

If you start with the images:

http://launchpadlibrarian.net/26034594/eit_grayscale.png
http://launchpadlibrarian.net/26034597/ctable_eit304.png

The expected output of the script is:

http://launchpadlibrarian.net/26034598/eit_final_ubuntu810.jpg

which is a COLOR image. The problem is that using newer version of PHP,
the result is a GRAYSCALE image.


Previous Comments:


[2009-04-30 17:33:11] paj...@php.net

and what do you expect as "correct" result? for this script.

And please not that both Debian and Ubuntu do not use the bundled GD as
it is recommended and the GD version they use is in a poor state (ubuntu
being less worst).

Please try the same using a normal php too, compiling it with the
bundled GD.



[2009-04-30 16:46:10] vincent dot k dot hughitt at nasa dot gov

Description:

I wrote a small piece of code using that uses the GD module to apply a
color-table to a gray-scale image.

In newer versions of PHP, however, the script only outputs grayscale
images, with no error message.

Furthermore, outputting the contents of imagecolorsforindex shows that
the script is still reading the palette properly, so it must have
something to do with the next step (imagecolorset).

Any ideas?

===
System 1 (non-working): 

Ubuntu 9.04 Linux 2.6.28-11-generic
PHP 5.2.6-3ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 23
2009 14:35:05)
gd 2.0.36~rc1~dfsg-3ubuntu1

===

System 2 (non-working):

Fedora 11 Beta Linux 2.6.29.1-111.fc11.i586
PHP 5.2.9
gd 2.0.35

===

System 3 (WORKING):
Ubuntu 8.10 Linux 2.6.27-11-generic
PHP 5.2.6-2ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Feb 11
2009 20:38:24)
gd 2.0.36~rc1~dfsg-3ubuntu1

===

(Originally reported downstream at:
https://bugs.edge.launchpad.net/ubuntu/+source/php5/+bug/368036)

Reproduce code:
---
/**
 * Takes a grayscale PNG and modifies it's index to use 256-color 
 * lookup table then outputs it as an 8-bit JPEG image, or 8-bit 
 * paletted PNG.
 *
 * Sample image and color-table:
 *
 * http://launchpadlibrarian.net/26034594/eit_grayscale.png
 * http://launchpadlibrarian.net/26034597/ctable_eit304.png
 */

$gd = imagecreatefrompng("eit_grayscale.png");
$ctable = imagecreatefrompng("ctable_eit304.png");

for ($i = 0; $i <= 255; $i++) {
 $rgba = imagecolorsforindex($ctable, $i);
 imagecolorset($gd, $i, $rgba["red"], $rgba["green"], $rgba["blue"]);
}

imagejpeg($gd, "eit_final.jpg", 75);
imagedestroy($gd);
imagedestroy($ctable);

Expected result:

Outputs a 8-bit color JPEG.
(http://launchpadlibrarian.net/26034598/eit_final_ubuntu810.jpg)

Actual result:
--
Outputs a 8-bit grayscale JPEG.
(http://launchpadlibrarian.net/26034602/eit_final_ubuntu904.jpg)





-- 
Edit this bug report at http://bugs.php.net/?id=48123&edit=1

#48123 [NEW]: imagecolorset no longer behaving properly in newer versions of PHP

2009-04-30 Thread vincent dot k dot hughitt at nasa dot gov

From: vincent dot k dot hughitt at nasa dot gov
Operating system: Ubuntu 9.04, Fedora 11
PHP version:  5.2.9
PHP Bug Type: GD related
Bug description:  imagecolorset no longer behaving properly in newer versions 
of PHP

Description:

I wrote a small piece of code using that uses the GD module to apply a
color-table to a gray-scale image.

In newer versions of PHP, however, the script only outputs grayscale
images, with no error message.

Furthermore, outputting the contents of imagecolorsforindex shows that the
script is still reading the palette properly, so it must have something to
do with the next step (imagecolorset).

Any ideas?

===
System 1 (non-working): 

Ubuntu 9.04 Linux 2.6.28-11-generic
PHP 5.2.6-3ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 23 2009
14:35:05)
gd 2.0.36~rc1~dfsg-3ubuntu1

===

System 2 (non-working):

Fedora 11 Beta Linux 2.6.29.1-111.fc11.i586
PHP 5.2.9
gd 2.0.35

===

System 3 (WORKING):
Ubuntu 8.10 Linux 2.6.27-11-generic
PHP 5.2.6-2ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Feb 11 2009
20:38:24)
gd 2.0.36~rc1~dfsg-3ubuntu1

===

(Originally reported downstream at:
https://bugs.edge.launchpad.net/ubuntu/+source/php5/+bug/368036)

Reproduce code:
---
/**
 * Takes a grayscale PNG and modifies it's index to use 256-color 
 * lookup table then outputs it as an 8-bit JPEG image, or 8-bit 
 * paletted PNG.
 *
 * Sample image and color-table:
 *
 * http://launchpadlibrarian.net/26034594/eit_grayscale.png
 * http://launchpadlibrarian.net/26034597/ctable_eit304.png
 */

$gd = imagecreatefrompng("eit_grayscale.png");
$ctable = imagecreatefrompng("ctable_eit304.png");

for ($i = 0; $i <= 255; $i++) {
 $rgba = imagecolorsforindex($ctable, $i);
 imagecolorset($gd, $i, $rgba["red"], $rgba["green"], $rgba["blue"]);
}

imagejpeg($gd, "eit_final.jpg", 75);
imagedestroy($gd);
imagedestroy($ctable);

Expected result:

Outputs a 8-bit color JPEG.
(http://launchpadlibrarian.net/26034598/eit_final_ubuntu810.jpg)

Actual result:
--
Outputs a 8-bit grayscale JPEG.
(http://launchpadlibrarian.net/26034602/eit_final_ubuntu904.jpg)

-- 
Edit bug report at http://bugs.php.net/?id=48123&edit=1
-- 
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=48123&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=48123&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=48123&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=48123&r=fixedcvs
Fixed in CVS and need be documented: 
http://bugs.php.net/fix.php?id=48123&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=48123&r=alreadyfixed
Need backtrace:  
http://bugs.php.net/fix.php?id=48123&r=needtrace
Need Reproduce Script:   
http://bugs.php.net/fix.php?id=48123&r=needscript
Try newer version:   
http://bugs.php.net/fix.php?id=48123&r=oldversion
Not developer issue: 
http://bugs.php.net/fix.php?id=48123&r=support
Expected behavior:   
http://bugs.php.net/fix.php?id=48123&r=notwrong
Not enough info: 
http://bugs.php.net/fix.php?id=48123&r=notenoughinfo
Submitted twice: 
http://bugs.php.net/fix.php?id=48123&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=48123&r=globals
PHP 4 support discontinued:  http://bugs.php.net/fix.php?id=48123&r=php4
Daylight Savings:http://bugs.php.net/fix.php?id=48123&r=dst
IIS Stability:   
http://bugs.php.net/fix.php?id=48123&r=isapi
Install GNU Sed: 
http://bugs.php.net/fix.php?id=48123&r=gnused
Floating point limitations:  
http://bugs.php.net/fix.php?id=48123&r=float
No Zend Extensions:  
http://bugs.php.net/fix.php?id=48123&r=nozend
MySQL Configuration Error:   
http://bugs.php.net/fix.php?id=48123&r=mysqlcfg

#48123 [Bgs]: imagecolorset() misbehaves in newer versions of PHP

#48123 [Asn]: imagecolorset no longer behaving properly in newer versions of PHP

#48123 [Fbk->Opn]: imagecolorset no longer behaving properly in newer versions of PHP

#48123 [NEW]: imagecolorset no longer behaving properly in newer versions of PHP

4 matches

Site Navigation

Mail list logo

Footer information