Zita-alsa-pcmi provides easy access to ALSA PCM devices, taking
care of the many operations required to open, initialise and use
an ALSA hw: device in memory mapped mode. To applications PCM
data appears as single precision floating point samples in the
range -1.0 to 1.0f. 

Two small example programs are provided as well:

* alsa_delay : measure roundtrip latency, similar to jack_delay.
* alsa_loopback : software loopback of the first two channels.

For other example code, see jaaa and japa.


Release 0.6.1  (27/12/2022)
---------------------------

Fixed major bug in conversion for S32_LE sample format.


Release 0.5.1  (14/07/2022)
---------------------------

Fixed floating point endian conversion routines.


Release 0.4.0  (27/11/2021)
---------------------------

Fixed big-endian conversion routines. Problems with these
in earlier versions would have shown up only on a big-endian
system.


Release 0.3.2  (25/08/2018)
---------------------------

Maintenance release.


Release 0.1.1  (26/01/2012)
---------------------------

* This release is almost API compatible with clalsadrv-2.x.x.
  The only changes your source code will need are:

  - Change the include file.
  - Change the type of any interface objects.
  - Replace calls to stat() by state(). 
  - If you want error reporting on stderr, add an optional
    parameter to the constructor. See include file for details.

* Added support for big-endian PCM formats.

* Added support for reading and writing interleaved user buffers.

* Error messages on stderr can be selectively enabled. If an app
  is compiled without them, they can be re-enabled at runtime by
  defining the environment variable ZITA_ALSA_PCMI_DEBUG, so they
  are now by default off. See source code for details.

* Two simple demo programs are provided, one of them is the ALSA
  version of jack_delay. Complete documentation will follow later.

-- 
FA
