[Alsaplayer-devel] libalsaplayer in LiVES

[salsaman]

Jay C. wrote:

>Salsaman,
>
>You do have alsaplayer running as a daemon while you use libalsaplayer,
>correct?
>
>--Jay
>  
>
Ah no !

How do I run it as a daemon ?


Perhaps I can also explain a bit more about the requirements for LiVES.
Each clip with audio in LiVES has a raw pcm file. The rate can be 
anything, and is stored as part of the clip. The number of channels can 
be currently mono or stereo.

When a clip starts playing, currently I just start sox as a separate 
process, and it plays the audio for the first clip (clips can be 
switched during playback). This is very unsatisfactory, as it is not 
possible to do even simple things like pause the audio.


What I would like is:

- play the audio in same/separate thread
- realtime control of the audio, so that when the video clip is 
switched, the audio track (file) is also switched
- ability to pause the audio
- ability to change the audio speed in realtime, including reverse play
- ability to adjust the volume in realtime
- ability to take timing from the sound card, so that video and audio 
remain in sync
- knowing when the audio seek is ready, so that video and audio playback 
can begin simultaneously
- ability to capture any audio that is being sent to the soundcard 
(record mode)
- ability to let the user pick the audio devices for playback and capture

Any help with this would be greatly appreciated.

Regards,
Salsaman.