At Tue, 30 Jun 2009 12:01:53 -0300, Guilherme wrote: > > Hum... > > so .. the code > > if ((areas[chn].step % 16) !=0 ) > > is because a 16bits format's been used. > > If I wanted a 32bits sample format I should change that for > if ((areas[chn].step % 32) !=0 ) ?? Depends. The step field doesn't specify the sample format. It specifies the bits to the next sample of the given channel. For such a purpose, checking the sample format bits via snd_pcm_format_width() or snd_pcm_format_physical_width() would be more suitable. > and the offset for the first doen's need any changes, is it? > > Just a opinion about all this, I think that alsa developers should design graphs for these things, as has in gstreamer documentation. > It is a lot easer to understand that way. > > It is because I dont understand very well yet, but as I am going to work with sound stuff especially in linux environment, Ill be very soon offering help for this! Well, usually you don't have to care about the channel_info. It's just for mmap, and unless you really do want it inevitably, the mmap access isn't needed. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
