Hi Jaroslav,
On Wed, Dec 04, 2019 at 10:10:49AM +0100, Jaroslav Kysela wrote:
Dne 04. 12. 19 v 1:33 Takashi Sakamoto napsal(a):
Would I expect your arrangement for this project, or should I continue to develop it apart from alsa-project?
You're the only developer for this thus I'll shift the repos in the ALSA project on github. You should also write to README that this project is not using alsa-lib, thus the extra abstraction interfaces from alsa-lib cannot be used. Or do you plan to build gobjects on top of alsa-lib, too?
Mmm. I guess that there's miscommunication about the design of alsa-gi project at first place. I remember you were not at the same room in the audio mini conf.
The original alsa-gi is independent of alsa-lib[1]. This has been immutable since I mentioned about the project in the audio miniconf[2], thus alsa-gobject is just on <sound/asound.h> and <sound/asequencer.h> as well. The project is thin layer between produced API and character devices for applications to execute I/O as easy as possible. This point is important to write tests and to implement some ctl/sequencer drivers in userland.
For the design, at present, I have no plan to be on alsa-lib. Especially, the combination of configuration space and domain specific language is not surely supported. The below features of alsa-lib are not supported by alsa-gobject:
* text files for configuration space * parser of domain specific language * plug-in mechanism for all interfaces * hctrl interface * mixer interface and sctl plug-in mechanism * plug-in SDK for pcm/ctl interfaces
I think it possible to implement the equivalents by high-level programming languages as well as the below features:
* Parser/builder for Type-Length-Value array for ctl interface * Converter between MIDI messages and ALSA sequencer events * topology interface * ucm interface
But at present my concern is I/O between user/kernel space, thus I have no plan to work for the above items now, except for TLV parser/builder.
[1] You can find no strings for 'alsa-lib' in meson.build. https://github.com/takaswie/alsa-gi/blob/master/src/meson.build [2] https://github.com/takaswie/presentations/blob/master/20181021/contents.md#m...
Regards
Takashi Sakamoto