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audio: add driver registry

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Add registry for audio drivers, using the existing audio_driver struct.
Make all drivers register themself.  The old list of audio_driver struct
pointers is now a list of audio driver names, specifying the priority
(aka probe order) in case no driver is explicitly asked for.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180306074053.22856-2-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2018-03-06 08:40:47 +01:00
parent a88afc649e
commit d3893a39eb
12 changed files with 106 additions and 45 deletions
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8
audio/sdlaudio.c
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@ -500,7 +500,7 @@ static struct audio_pcm_ops sdl_pcm_ops = {
.ctl_out = sdl_ctl_out,
};
struct audio_driver sdl_audio_driver = {
static struct audio_driver sdl_audio_driver = {
.name = "sdl",
.descr = "SDL http://www.libsdl.org",
.options = sdl_options,
@ -513,3 +513,9 @@ struct audio_driver sdl_audio_driver = {
.voice_size_out = sizeof (SDLVoiceOut),
.voice_size_in = 0
};
static void register_audio_sdl(void)
{
audio_driver_register(&sdl_audio_driver);
}
type_init(register_audio_sdl);