[linux-audio-dev] jack ports & alignment

[Stéphane Letz]

Le 8 avr. 05, à 00:42, Tim Blechmann a écrit :

> hi all,
>
> just a short question about jack ...
>
> the pointer that
> void *jack_port_get_buffer (jack_port_t *, jack_nframes_t);
> returns, is that 128 bit aligned (for simd use)?
>
> thanks ... tim
>
> --


Yes.

The low level port allocation code does that : in poll.c

jack_pool_alloc (size_t bytes)
{
#ifdef HAVE_POSIX_MEMALIGN
	void* m;
	int	err = posix_memalign (&m, 16, bytes);
	return (!err) ? m : 0;
#else
	return malloc (bytes);
#endif /* HAVE_POSIX_MEMALIGN */
}


Stephane Letz