Subject: Re: [linux-audio-dev] streaming from disk to terminatorX added (via mmap)
From: Andy Lo A Foe (andy_AT_alsa-project.org)
Date: ti loka 26 1999 - 02:59:40 EDT
On Mon, 25 Oct 1999, Benno Senoner wrote:
> I doubt it that a CDROM drive can keep up with a nervous scratcher.
> :-)
Well, my Hitachi DVD-ROM does very well. I can get sustained playback
at 500% (that's like ripping at 5 speed). Reverse playback works at up to
-400% reliably, that's enough for most 'scratching' purposes, unless the
DJs speed their records up 10x for a period of a few seconds :)
> The only solution is to keep in memory 100-200k samples before and past the
> actual playing position, but I think reading backwards from a CDROM drive sucks
> a lot.
Oh, actually I never read 'backwards' from a CD, or for that matter decode
an mp3 backwards. The ringbuffer is about 300K so that's enough for about
2 seconds of music.
Andy
-- AlsaPlayer, http://www.alsa-project.org/~andy/
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