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hdspmixer: add output loopback buttons

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This patch adds "LPBK" buttons to the output strip
channels allowing to toggle the hardware output
loopback state.

Efforts were made to hide the buttons for not yet
enabled devices but due to difficulties in implementation
was cancelled for the time being. Should it be a no-go
efforts should be made to fix this and hide them,
although I would think fixing the driver for other
devices would be an effort with much more merit.

This is currently only enabled for HDSP9632 devices
with following driver patch:
da2a040ee7

We check whether the system has the kernel patch
applied by calling `HDSPMixerCard::supportsLoopback()`
and if not these buttons remain gray (off) and do
nothing when clicked.

Signed-off-by: Jasmin Fazlic <superfassl@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jasmin Fazlic 2021-02-07 15:50:48 +01:00 • committed by Takashi Iwai
parent c0e69055fa
commit 3e4fd7dffb
19 changed files with 931 additions and 438 deletions
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2
hdspmixer/src/defines.h
View file

@ -34,7 +34,7 @@
#define STRIP_WIDTH 36
#define FULLSTRIP_HEIGHT 253
#define SMALLSTRIP_HEIGHT 208
#define SMALLSTRIP_HEIGHT 224
#define MENU_HEIGHT 20
#define MIN_WIDTH 2*STRIP_WIDTH