--- Begin Message ---
|
Subject: |
Re: [sr #103871] Verifying GUI-Testresults with xnee using the Tool "xgrabsc" |
|
Date: |
Wed, 18 Jan 2006 18:01:19 +0200 |
Hello,
I am wondering why ImageMagic import screen capture program works
almost three times more slowly than xwd ? I checked both .xwd files
with xwud -command and I did not find any visible difference between them.
(For details, see the end of my message)
Dirk wrote:
"I think, its neccessary to save the checksum and the coordinates
of the screenshot while recording a session in the session-file and save the
screenshot under a filename given by user in a soure-directory for reference-screenshots.
In "Test.dat" you can find only one line like this:
5#137#34#96
That means: 5 Start at x-coordinate 5
137 Start at y-coordinate 137
34 End at x+34
96 End at y+96
"
(http://savannah.gnu.org/support/?func=detailitem&item_id=103871)
According to /usr/X11R6/include/X11/XWDFile.h xwd file format saves image coordinates too:
CARD32 window_width B32; /* Window width */
CARD32 window_height B32; /* Window height */
CARD32 window_x
B32;
/* Window upper left X coordinate */
CARD32 window_y
B32;
/* Window upper left Y coordinate */
CARD32 window_bdrwidth B32; /* Window border width */
Dirk wrote also "I think, its neccessary to save the checksum and the coordinates of the
screenshot while recording a session in the session-file and save the screenshot under a
filename given by user in a soure-directory for reference-screenshots."
I did't understand why screenshot itself should be saved to the file if the
only usage for this picture file is to calculate checksum. I think that
checksum should be saved, not the picture.
How are you planning to calculate checksum ? My choice was adler32 instead of md5sum
when I did java -program, because Adler32 was much, much more faster than md5sum.
Adler32 should be inside /usr/lib/libz.so
# uLong adler32 (uLong adler, const Bytef *buf, uInt len);
# uLong crc32 (uLong crc, const Bytef *buf, uInt len);
http://www.zlib.net/manual.html#Checksum%20functions
Veijo
On 1/18/06, Henrik Sandklef <address@hidden> wrote:
Update of sr #103871 (project xnee):
Status:
In Progress => Done
Open/Closed: Open
=> Closed
_______________________________________________________
Follow-up Comment #5:
I will close this task and open a new one instead. The reason is I think
using ImageMagick is easier.
/hesa
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/support/?func=detailitem&item_id=103871
>
_______________________________________________
Message sent via/by Savannah
http://savannah.gnu.org/
--- End Message ---