On 19.12.2014 04:28, Alfonso Sabato Siciliano wrote:
hello, I am willing to know the sound system of OpenBSD,
so I started to read the manpages.
I summarized with a graph below, it is right?
You may want to read these two as well
http://www.openbsd.org/papers/asiabsdcon2010_sndio_slides.pdf
http://www.openbsd.org/papers/asiabsdcon2010_sndio.pdf
sndio(7): The sndio audio and MIDI system provides
access to audio and MIDI hardware and to services
provided by sndiod, summarized below.
|------| |------| |------|
| app1 | | app2 | .... | appN |
|------| |------| |------|
| | |
\|/ \|/ \|/
|-----------------------------------------------|
| sndio.h |
| sio_open(3)/mio_open(3) |
| interface to audio devices and MIDI streams |
|-----------------------------------------------|
|
\|/
|---------------------------------------|
| sndiod(1) |
| audio/midi server |
|---------------------------------------|
| |
\|/ \|/
|--------------------| |-------------|
| audio(4) | | midi(4) |
| device-independent | | raw device |
| driver layer | | independent |
|--------------------| | interface |
| |-------------|
| |
\|/ \|/
|---------------------------------|
| device dependent driver |
| (azalia(4), ac97(4), ...) |
|---------------------------------|
|
\|/
|--------------------------------------|
| [audio] [MIDI] |
| |
| Hardware |
|--------------------------------------|
Regards Alfonso
----------------------
Alfonso Sabato Siciliano <[email protected]>
