| Message ID | 20191107015808.26844-7-cujomalainey@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [01/11] ucm: docs: Add JackName value | expand |
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
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.
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
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(+)