Re: [AD] new ALSA driver

[Milan Mimica <milan.mimica@xxxxxxxxxx>]

Chris Robinson wrote:
> Don't forget, when _al_voice_update returns NULL, you should play silence. You 
> currently just rest and return.

I still don't see what's wrong with resting.

I did some more work on it:
- setting device names by channel config
  Added 3 new options for alsa_set_ptr(): AL_ALSA_DEVICE_2CH, 
AL_ALSA_DEVICE_4CH, AL_ALSA_DEVICE_6CH. Default device names are 
"default", "surround40" and "surround51". I don't know about other 
channel configuration schemes. I saw this in MPlayer sources.

- multiple hardware voices
  ALSA driver now supports up to MAX_VOICES voices (currently defined 
to 5). Multiple calls to snd_pcm_open are made. I was able to open even 
50 voices on "default" device, but only one on surround devices.

- the example app was modified to play all samples given in command line 
at the same time, using as many voices possible. The code is a mess now.

I noticed that the API lacks volume control of any kind. Am I missing 
something?

A function to get available driver names would be nice.

And there is a bug with streaming. It's like the last fragment gets 
repeated twice. It happens both with alsa and openal driver so the 
problem must be somewhere else.


--
Milan Mimica
http://sparklet.sf.net

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