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address@hidden: Re: Native play function slows down emacs on RH 7.3]
From: |
Richard Stallman |
Subject: |
address@hidden: Re: Native play function slows down emacs on RH 7.3] |
Date: |
Thu, 25 Jul 2002 12:07:27 -0600 (MDT) |
Is anyone interested in implementing asynchronous playing of sound in
Emacs? Forking sounds like a rather heavyweight method; perhaps the
sound output facilities have asynchronous output features. Gerd,
do you know what is available?
------- Start of forwarded message -------
From: TV Raman <address@hidden>
Date: Tue, 23 Jul 2002 16:17:05 -0700
To: address@hidden
Cc: address@hidden, address@hidden
Subject: Re: Native play function slows down emacs on RH 7.3
In-Reply-To: <address@hidden>
Reply-To: address@hidden
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
Fax: 1 (408) 927 3012
Email: address@hidden
WWW: http://www.cs.cornell.edu/home/raman
AIM: TVRaman
PGP: http://emacspeak.sf.net/raman.asc
Snail: IBM Almaden Research Center,
650 Harry Road
San Jose 95120
------- End of forwarded message -------
- address@hidden: Re: Native play function slows down emacs on RH 7.3],
Richard Stallman <=