>On Fri, 6 Sep 2002, Guilhem Tardy wrote: > >> Hi all, >> >> While trying to understand snd_pcm_lib_write1(), I found that >> runtime->xfer_align is set to period_size in pcm_native.c, but wonder if it >is >> just a default? >> >> Paul Davis' example (at http://www.op.net/~pbd/alsa-audio.html#playex) doesn >'t >> check for a particular transfer size, and my card supports playout of less t >han >> 160 samples (i.e. the period size). Thus, I set to try playing out 512 bytes > at >> a time (i.e. 2048 samples of 2-bit ADPCM), which does NOT come to a multiple > of >> period size. The result is that only 1920 samples are played, and my app thi >nks >> an error has occured. >> >> Is it a general requirement for apps to send only audio in multiple of the >> period size? > >Nope, applications might modify xfer_align to satisfy their requirements.
jaroslav, since even i don't understand what xfer_align is for, or even have an answer to the actual question, it might be good for you to expand on this a little. --p ------------------------------------------------------- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1&refcode1=vs3390 _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
