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 (notting@xxxxxxxxxx) 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:
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.
Jeff
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