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[SpeechIO-9] the right way to implement /dev/speech
I think most of the time most of us have agreed that our current
implementation of /dev/speech is not optimul. Sometimes I've thought it
should be implemented within speech synthesis systems (like festival),
sometimes I'v felt that it should be a kernel module.
But I just remembered something.. within the last 24 hours that made me
think (which I'm guessing I've thought before) that we are actually doing
it almost right (written in perl & using a FIFO (not a real device) in
The biggest (one ?) argument against the perl+FIFO thing has been dropping
lines, I think.
Well, I think the biggest argument for using this method is gpm. Yeah,
the program that lets you copy & paste w/ your mouse on the console.
If you have a serial mouse, that device can be accessed by multiple
programs simultaneously. gpm can be accessing it from the terminal while
X is accessing the mouse directly itself.
If you have a ps/2 mouse, only one program can access it at a time (no
idea why). So to make it possible to use gpm & X simultaneously, gpm
creates a FIFO called (I believe) /dev/gpmdata. You then tell X that your
mouse device is /dev/gpmdata. X is reading mouse input from a FIFO, which
is getting output from the gpm program. The same kind of file we're
polling for text with speechd. This wouldn't work if the best a FIFO
could do is polling every 2 seconds & missing some data (like speechd). So
I figure there's gotta be a better way of doing it, with perl & a FIFO.
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Far Beyond Reason