linuxaudio.org

Am 8. März 2012 01:08 schrieb  :

quoted text
>

> It is possible with (curses-ansi escapes) TUI vary sine parameters -

> Frequency and amplitude.

>

Possible with restrictions:

You cannot call blocking functions in jacks process() function.

Thus non-blocking inter-thread communication may be necessary.

>

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> Is it possible this program __as_is__ rewrite for jack output ?

>

Jack Audio uses a _callback_ based api.

What you have there is not.
You could re-use the above code with simple adjustments

by adding an additional bridging library.

(Eventually causing loss of realtime capabilities.)
Look at :
bio2jack  --  http://bio2jack.sourceforge.net/
jackasyn  --  http://packages.debian.org/search?suite=default&section=all&arch=any&sea...

(I couldn't find its original home)
>

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> Anyway - What is best (thread?, IPC?) program, structure, realtime-safe,

> for such simple jack-TUI program ?

>

Look at jack example code, for how to make a real jack app.

>

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> Normal 16 bit sound samples must be in range

>

Jackd uses 32 bit float.

Everything below -1.0 and above +1.0 is likely to become cut anywhere.

Re-sampling 16-bit to float is possible with additional libraries.

--

E.R.

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