[alsa-devel] Restart alsa-gi project as alsa-gobject project

[Takashi Sakamoto]

Hi Jaroslav,

On Sun, Dec 01, 2019 at 05:04:50PM +0900, Takashi Sakamoto wrote:
> Since Audio Mini Conference 2018, I continued to work for alsa-gi[1] in
> my local to integrate toward better I/O libraries. However I realized
> that its basic design includes some disadvantages to produce useful APIs.
> 
> I rethink the design and realize it better to wrap each of structures
> in <sound/asound.h> simply. Then, I restart it as alsa-gobject[2].
> At present, master branch includes a library, `libalsactl0` for the
> most of I/O features in ALSA control interface, which is compatible with
> GObject mechanism and GObject introspection.
> 
> Jaroslav, would you please delete the alsa-gi repository and fork
> the master branch from my alsa-gobject repository, then apply enough
> configurations to the new repository?
> 
> 
> My repository includes four branches as well for ALSA
> hwdep/rawmidi/timer/seq interfaces. The most of features in each
> interface is already available via included libraries but under heavy
> development.
> 
> I already start to test them with Python 3 (PyGObject) and they seem
> work well. I also test them with Rust bindings generated by gtk-rs/gir[3]
> tool. Near future I also publish Rust crates for further convenience.
> 
> 
> For your interests, this Python 3 script is a sample to listen one
> event from ALSA control character device. This simple program is not
> terminated voluntarily or by sending UNIX signal, thus please generate
> control event by alsamixer or amixer:
> 
> ```
> #!/usr/bin/env python3
> 
> import gi
> gi.require_version('GLib', '2.0')
> gi.require_version('ALSACtl', '0.0')
> from gi.repository import GLib, ALSACtl
> 
> class MyCard(ALSACtl.Card):
>     def __init__(self, card_id, ctx, dispatcher):
>         super().__init__()
>         self.open(card_id)
> 
>         self.create_source().attach(ctx)
> 
>         self.__dispatcher = dispatcher
> 
>     def do_handle_disconnection(self):
>         self.__dispatcher.quit()
> 
>     def do_handle_elem_event(self, elem_id, events):
>         # Print the first event and quit event loop.
>         print(elem_id.get_iface().value_nick,
>               elem_id.get_device_id(), elem_id.get_subdevice_id(),
>               elem_id.get_name(), elem_id.get_index(),
>               events.value_nicks)
>         self.__dispatcher.quit()
> 
> 
> ctx = GLib.MainContext.new()
> dispatcher = GLib.MainLoop.new(ctx, False)
> card = MyCard(0, ctx, dispatcher)
> 
> dispatcher.run()
> ```
> 
> [1] https://github.com/alsa-project/alsa-gi
> [2] https://github.com/takaswie/alsa-gobject
> [3] https://github.com/gtk-rs/gir

Would I expect your arrangement for this project, or should I continue
to develop it apart from alsa-project?


Regards

Takashi Sakamoto