Re: [Protux-devel] Open Task

[Luciano Giordana]

> thanks... got a first playback working, not commited yet as there are
> still a lot of error conditions to check.
> I don't use fread, but PrafFile::get_fragment(), i think that's why this
> function is there ;-)
>

Yes :-) precisely :-)


> Just a question: what happens at the end of the praf clip, when fread()
> (or get_fragment()) reads less than bufsize. That would mean that the
> end of the buffer contains old audio data, which would lead to a 'noisy
> click' at the end of playback (at the edge of the new and the old data).
> Or i am completely wrong ?

read_fragment return the number of bytes sucessfully read, that
can be used to read incomplete chuncks


> I think the return value of fread should be checked, and given as an
> argument to bus_out_transfer().... or is this problem handled somewhere
> else ? Like padding the praf audio data with zeros to achieve and audio
> size which is a multiple of bufsize ? 

you can use

MustuxAudioDeviceMapper::clean_bus_out_transfer_buffer(busId);

before reading the fragment, so the incomple chuncks will be filled with zeros

regards

-- 
Best Regards
--
Luciano Giordana - Musician - Certified Java/GNU C++ Developer - Free Software 
Evangelist
Project Mustux - http://www.freesoftware.fsf.org/mustux
-- GNU/Linux adoption grew 65% only this yer. Smile : we're winning. --