[Mplayer-dev-eng] audio out drivers - libao2

[Arpi]

Hi,

Just commited initial version of libao2

It's the same design as libvo, so easy to understand.
It has only few basic functions, and a general-purpose control() interface.

static int control(int cmd,int arg);
static int init(int rate,int channels,int format,int flags);
static void uninit();
static void reset();
static int get_space();
static int play(void* data,int len,int flags);
static int get_delay();

the most important functions are get_space and get_delay.

get_space should return how many bytes can be written without blocking.
if driver can't do that, then it should return outburst if device
writeable (select()) or 0 is buffer is full.

get_delay() should return how many bytes are in the audio buffer not yet
played. if driver can't do that, then buffer size should be returned.

for template, use ao_null.c
for exaple, see ao_oss.c

don't forget to add your driver to Makefile and audio_out.c

A'rpi / Astral & ESP-team

--
mailto:arpi at thot.banki.hu
http://esp-team.scene.hu

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