On Wed, Jul 29, 2009 at 9:24 AM, Lennart Poettering <mzerq...@0pointer.de>wrote:
> On Wed, 29.07.09 06:48, Jeff Garzik (jgar...@pobox.com) wrote: > > > > > Karel Zak wrote: > >> On Tue, Jul 28, 2009 at 10:07:32PM +0200, Lennart Poettering wrote: > >>> On Tue, 28.07.09 15:48, Bill Nottingham (nott...@redhat.com) wrote: > >>> Yes. You cannot select them as record source, you cannot mute or > >>> unmute them, you cannot change their volume. "CD", "PC Speaker", > >>> "MIDI" and so on are just obsolete. > >> > >> This reminds me your note: > >> > >> > https://tango.0pointer.de/pipermail/pulseaudio-discuss/2009-July/004519.html > >> > >> PA does not make use of hardware mixing. And I don't plan to change > >> that. It's obsolete technology. CPUs these days come with extensions > >> such as MMX or SSE precisely for speeding up DSP tasks such as PCM > >> mixing. This is way more flexible that hw mixing, and definitely the > >> way to the future, both on the desktop and on embedded envs as well. > >> > >> > >> The "obsolete technology" -- who made this decision? Is it your private > >> opinion or any suggestion from sound card manufacturers? > >> > >> It seems that HW companies still produce the "obsolete technology". > > > > Quite agreed [says a former kernel audio driver maintainer], and I will > > go even farther: > > Maybe since the times you worked on audio drivers the design of the > sound cards changed a little and stuff like SSE became largely available? > > > It is completely stupid to waste host CPU on a task that can be > > offloaded in parallel to dedicated audio hardware. > > > > If the user intentionally purchased expensive audio hardware with nice > > hardware mixing, do not subvert the user's intentions by ignoring such > > nice hardware. > > > > Any developer who claims "always use software mixing" or "always use > > hardware mixing" is a young, inexperienced fool. There are valid > > situations for both choices. > > Hear hear, Mr. Garzik is the the old experienced wise man of audio, > who knows so much more about audio than any of the audio guys at > Microsoft or Apple. > > Happy to take patches. > > Lennart > Here is a patch, 2 weeks old. https://bugzilla.redhat.com/show_bug.cgi?id=461546 -- projecthuh.com All of my bits are free, are yours? Fedoraproject.org
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