Jaroslav Kysela wrote: > > On Mon, 24 Feb 2003, Abramo Bagnara wrote: > > > Jaroslav Kysela wrote: > > > > > > I think that I have one present problem. It was not possible to write, > > > something like the dmix plugin does (in the server/client model): Transfer > > > data to different areas in the ring buffer. Imagine that client1 wants to > > > write data at the end of the ring buffer (assume that server don't change > > > the r/w pointer). Then client2 comes with some data to be placed at the > > > start of the buffer later (server rewinds the stream position). Then > > > hardware processed a period and client1 wants to continue (server forwards > > > the stream position at the end of the ring buffer). > > > > > > I can imagine more examples where "later" samples might be wanted to be > > > processed before "quick" ones. > > > > Your examples appears a little confused at my eyes, but if I've > > understood correctly don't you think this might be solved by > > snd_pcm_rewind done by server? > > And you'll need to commit the same samples later which seems to me quite > ineffective (extra copy + processing (if required)).
Yes, this is definitely true. > I probably don't explain clearly my point: > > We have data for time T, T+1 and T+2. The application might want to write > data in this order: T+1, T, T+2. While we going back to T position, we can > use snd_pcm_rewind(), but going to T+2 (without changing T+1 data) > requires writting (or commiting) of same samples now. That's exactly what > I want to eliminate. Now I understand perfectly. When in past I analyzed this I was unable to imagine a real scenario where this might happens. To tell you the truth now too I've some difficulties... can you help me? -- Abramo Bagnara mailto:[EMAIL PROTECTED] Opera Unica Phone: +39.546.656023 Via Emilia Interna, 140 48014 Castel Bolognese (RA) - Italy ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
