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Thursday, September 20, 2007

How to create a blogger feed for a given category

Blogger publish ATOM feed for recent posts by default, including posts from all categories.
To publish a feed with only posts from a given category is also very simple. For example, in a blogger site http://blog.lizhao.net/ with category named 'maemo', the feed is:
For more discussion about the format, plz refer to another article

Monday, September 17, 2007

make minimo maemo more stable

MicorB for ITOS2007HE may be on the way, but who knows when will it finally arrive. Based on the waiting experience, I decided to reinstall minimo, while waiting it.

When I tried minino 1 mth ago, it is not stable on 770, but I also heard if increase memory buffer size, it can perform much better. So, I try to set the buffer size to 4096 or 8192, according to mozilla site.

On 770, just run: vi /home/user/.mozilla/minimo/prefs.js and add one line:
user_pref("browser.cache.memory.capacity", 8192);
trying google calendar/reader/gmail for a while, yea, it is much more stable, but an annoying bug is still there.
I feel if there is unknown errors happened in rendering a page, the corresponding tab can not be closed, or refresh, and it will affect other tabs.
If anybody know how to solve this, plz tell me. :-)
try: user_pref("network.http.max-connections", 8); and user_pref("network.http.max-connections-per-server", 4);

Display Icon in Maemo Application Manager

After making a deb package for maemo platform, and depolying it to a repository recognized by Maemo application manager, it is valuable to let application manager display a interesting icon beside the package name.

There are several points need to note:

  1. encode a 26x26 png image into base64 format, this can be done by: uuencode -m xxx_26x26.png /dev/stdout . Then the encoded texts (between the 1st and the last line) will be used in package.
  2. embed the texts into debian/control, in a section named: XB-Maemo-Icon-26. There must be a space before each line in this section.
  3. run dpkg-scanpackages to generate Packages.gz, and make sure the XB-Maemo-Icon-26 section is also copied into Packages.gz
Actually, application manager display icon based on the base64 data found in Packages.gz.

However, I found dpkg-scanpackages of some versions dismiss the icon section. For these versions, here is the workaround:


dpkg-scanpackages ....... > .../Packages.gz


cat $BIN_SCANPACKAGES | $BIN_SED -e "s/('Package',/('Package', 'Maemo-Icon-26',/" > $dpkg_scanpackages #this is for dpkg-scanpackage 1.3
cat $dpkg_scanpackages | $BIN_SED -e "s/Size MD5sum Section Priority Description))/Size MD5sum Section Priority Description Maemo-Icon-26))/" > $dpkg_scanpackages #this is for dpkg-scanpackage 1.4
chmod 755 $dpkg_scanpackages

$dpkg_scanpackages ....... > .../Packages.gz

Monday, September 03, 2007

Free Video Converter for Home DVD player

Most DVD players sold today have DivX support, I think. So, it is a good choice to convert videos to DivX and enjoy thems in sofa.

The free version of any video converter do the job quite well.

You may want to test the video converted with DivX Player before burning CDs.