.pwi file

quote:Originally posted by mitacus

How can I convert .pwi files, notes with sound recording into .wav? On the desktop computer.

If you can do a bit of programming, it's not that complicated (unfortunately, ActiveSync's conversion doesn't convert PWI files with embedded audio). I've reverse engineered the embedded PWI file structure and found out that it has a very simple, linear structure. The steps of extracting all the WAV files embedded in a PWI file are as follows:

1, look for the Unicode string "VoiceNote.wav" in the file; if there is no (other) occurrence, quit
2, add 0x1032 to the position of the trailing "v" in it; seek to this position in the file
3, read up the size of the note (4 bytes in big-endian format; there's a 0x0055 before it)
4, extract the section starting just after these 4 bytes with the size just read to a separate file
5, go to step 1 for the next embedded audio note

quote:I've reverse engineered the embedded PWI file structure and found out that it has a very simple, linear structure.

That is great news. Did you publish it somewhere?

I use a self-made scribble control and would like to use the built-in handwriting recognition. For that I am looking for a way to a) create a PWI file and b) invoke the handwriting recognizer on that file.

Any help appreciated

quote:Originally posted by mh385

quote:I've reverse engineered the embedded PWI file structure and found out that it has a very simple, linear structure.

That is great news. Did you publish it somewhere?

Nope, just posted to some PDA discussion boards.

It would be great if you could help me with my problem mentioned above (overall goal: to have some scribbled text recognised), for instance, by pointing me to the appropriate postings or mentioning here how to create a PWI that include some pen strokes.

Thanks a lot

quote:Originally posted by mh385

It would be great if you could help me with my problem mentioned above (overall goal: to have some scribbled text recognised), for instance, by pointing me to the appropriate postings or mentioning here how to create a PWI that include some pen strokes.

I haven't reverse engineered THAT part of PWI files; only how the in-line WAV files are stored and how they have to be extracted. Will try to do it when I have some time, but I can't promise anything.

I searched the web for quite a long time and did not find any way to invoke the PPC-internal recognise method. (Or has anyone managed to do this?)

Without that being possible, you do not need to spend too much effort into the reverse-engineering of the pwi files. Thanks for your help.

quote:Originally posted by mitacus

How can I convert .pwi files, notes with sound recording into .wav? On the desktop computer.

Now, this problem is solved. Please readhttp://www.smartphonemag.com/forum/topic.asp?TOPIC_ID=16597