Hello,
generally the bitmap loading is faster. But if you have fast ARM-based jpeg
loader then the difference might be small. (It should be even faster than a
non-ARM bmp loader.)
Also consider organizing an icon cache - that can greatly speed up the image
loading.
What was the device you used for the testing? For an ARM-based device the
results seem to be too slow. You may take some of the available viewers to
find out how long should the loading take. (But be sure to select a fast
one.)
Regards,
Jan Slodicka
----- Original Message -----
From: "DongDong" <[EMAIL PROTECTED]>
Newsgroups: palm-dev-forum
To: "Palm Developer Forum" <[EMAIL PROTECTED]>
Sent: Saturday, March 20, 2004 8:48 AM
Subject: Jpeg or Bitmap
> I'm doing a project with product selection by thumbnails. Also, each
product
> has a 64x64 thumbnail and 320x320 image. There are 12 thumbnails (4
columns
> x 3 rows) on screen at a time.
>
> It takes about 5 sec to display all twelve jpeg images on screen each
time.
> When user press up or down, the screen shift up/down one row (4
thumbnails).
> Since there is 8 thumbnails still on screen, the program need to convert 4
> more thumbnails only. It takes about 2 seconds.
>
> Is it more practical to use palm bitmap file format, with which the
program
> should be able to display without delay? Of course, the file size will be
> bigger but the speed will be greatly increased.
>
> Any advice and suggestion with experience.
>
>
>
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