On Mon, Nov 11, 2019 at 7:30 AM Jaroslav Kysela perex@perex.cz wrote:
Dne 07. 11. 19 v 2:58 Curtis Malainey napsal(a):
Add ucm value to tell userspace to remap channels. This is useful for systems with DMICs where there may be more channels than active channels.
Signed-off-by: Curtis Malainey cujomalainey@chromium.org
include/use-case.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/include/use-case.h b/include/use-case.h index 1aeaf9d4..31f9e4be 100644 --- a/include/use-case.h +++ b/include/use-case.h @@ -301,6 +301,10 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
- name of capture mixer
- CaptureMixerID
- mixer capture ID
- CaptureChannelMap
- Remap channels using ALSA PCM channel mapping API notation
E.g. "2 3 0 1 -1 -1 -1 -1 -1 -1 -1" means, FL takes channel 2,
FR takes channel 3, RL takes channel 0, RL takes channel 1.
- EDIDFile
- Path to EDID file for HDMI devices
- JackControl, JackDev, JackHWMute
I see a room for the improvement to have a better and complete mapping description like:
CaptureChannelMap "FR=0 RL=1 TC=2"
The location names should follow SND_CHMAP defines.
Jaroslav
I am definitely for that modification as the mapping for the plugin is not easy to read, that being said, do we have a tool to handle parsing/converting that from a string already? I feel like we should add one if we are going to make that the spec.
-- Jaroslav Kysela perex@perex.cz Linux Sound Maintainer; ALSA Project; Red Hat, Inc.