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Re: Native play function slows down emacs on RH 7.3
From: |
TV Raman |
Subject: |
Re: Native play function slows down emacs on RH 7.3 |
Date: |
Tue, 23 Jul 2002 16:17:05 -0700 |
I looked at the code in src/sound.c --and things look okay with
respect to how the sound is played.
The problem is that the function as written is synchronous
--i.e. returns only ater the sound is done playing
--which explains the slowness I perceived.
It might be useful to have the function parse its args, check the
validity of the sound data --and then
fork to play the sound so emacs can continue what it is doing.
Richard Stallman writes:
> If you use the built-in play-sound function,
> things feel slower than when using (shell-command "play "...)
>
> It's hard to articulate the "feel slower" bit --
> but at least when I switched emacspeak to start using play-sound,
> the rest of emacs felt sluggish.
>
> Can you investigate a little--by seeing what method Emacs uses to play
> a sound, and what method the `play' program uses? Maybe we're not
> using the best method, or we might be using it wrong.
>
> Unfortunately I know next to nothing about the facilities for playing
> sound.
--
Best Regards,
--raman
------------------------------------------------------------
T. V. Raman: PhD (Cornell University)
IBM Research: Human Language Technologies
Architect: Conversational And Multimodal WWW Standards
Phone: 1 (408) 927 2608 T-Line 457-2608
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Email: tvraman@us.ibm.com
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