Re: [alsa-devel] [PATCH - alsa-lib 1/1] add surround21 for Echo3G devices
On 18 January 2016 at 00:12, Raymond Yau superquad.vortex2@gmail.com
wrote:
7>
There is actually ONE card conf, AACI.conf, that supports surround51 but not surround20/surround41/surround50, but I don't feel like touching it, coz it's in the ideal state of what I proposed here:
http://mailman.alsa-project.org/pipermail/alsa-devel/2016-January/103121.htm...
On 17 January 2016 at 03:05, tom.ty89@gmail.com wrote:
From: Tom Yan tom.ty89@gmail.com
It's the only card conf that make use of surround41.conf and surround50.conf but not surround21.conf; Adding it for consistency,
since
all three of them are derived from surround51.
Signed-off-by: Tom Yan tom.ty89@gmail.com
diff --git a/src/conf/cards/Echo_Echo3G.conf b/src/conf/cards/Echo_Echo3G.conf index 766f13f..93d9ce4 100644 --- a/src/conf/cards/Echo_Echo3G.conf +++ b/src/conf/cards/Echo_Echo3G.conf @@ -50,6 +50,40 @@ Echo_Echo3G.pcm.side.0 { subdevice 6 }
+confdir:pcm/surround21.conf +Echo_Echo3G.pcm.surround21.0 {
@args [ CARD ]@args.CARD {type string}type multislaves [{pcm {@func concatstrings ["cards.Echo_Echo3G.pcm.front.0:CARD=" $CARD
]}channels 2}{pcm {@func concatstrings ["cards.Echo_Echo3G.pcm.center_lfe.0:CARD=" $CARD
]}channels 2}]bindings [{ slave 0 channel 0 }{ slave 0 channel 1 }{ slave 1 channel 0 }]+}
Have you tested with real hardware for surround21 since pulseaudio fail
with
multi plugin with error -77 ?
http://lists.freedesktop.org/archives/pulseaudio-discuss/2014-November/02267...
Nope, not tested with one that uses a card conf that make use of the multi plugin.
I just happen to have found this particular conf have surround21 missing, so I add it back for consistency:
http://mailman.alsa-project.org/pipermail/alsa-devel/2016-January/103123.htm...
But I do wonder why some card conf needs the multi plugin while others doesn't. I wonder if it had been abused. Feels like it is something that should be implemented in the actual driver code instead.
Those cards allow user to play two audio streams to front and rear devices, they need multi plugin for multi channel playback
http://git.alsa-project.org/?p=alsa-plugins.git;a=commit;h=a0693150dfd428fdd...
It seem that playback of some plugins can be started at first write when start threshold is -1
Pulseaudio call snd_pcm_start when pcm state is already running
Then what about this: http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/SB-XFi.c... It seems to be allow the "multi-streaming" you mentioned but it doesn't need the multi plugin.
Hmm, I feel like definitions for "ttable PCMs" in Echo_Echo3G.conf should be cleaned up...
On 18 January 2016 at 09:50, Raymond Yau superquad.vortex2@gmail.com wrote:
On 18 January 2016 at 00:12, Raymond Yau superquad.vortex2@gmail.com wrote:
7>
There is actually ONE card conf, AACI.conf, that supports surround51 but not surround20/surround41/surround50, but I don't feel like touching it, coz it's in the ideal state of what I proposed here:
http://mailman.alsa-project.org/pipermail/alsa-devel/2016-January/103121.htm...
On 17 January 2016 at 03:05, tom.ty89@gmail.com wrote:
From: Tom Yan tom.ty89@gmail.com
It's the only card conf that make use of surround41.conf and surround50.conf but not surround21.conf; Adding it for consistency, since all three of them are derived from surround51.
Signed-off-by: Tom Yan tom.ty89@gmail.com
diff --git a/src/conf/cards/Echo_Echo3G.conf b/src/conf/cards/Echo_Echo3G.conf index 766f13f..93d9ce4 100644 --- a/src/conf/cards/Echo_Echo3G.conf +++ b/src/conf/cards/Echo_Echo3G.conf @@ -50,6 +50,40 @@ Echo_Echo3G.pcm.side.0 { subdevice 6 }
+confdir:pcm/surround21.conf +Echo_Echo3G.pcm.surround21.0 {
@args [ CARD ]@args.CARD {type string}type multislaves [{pcm {@func concatstrings ["cards.Echo_Echo3G.pcm.front.0:CARD=" $CARD
]}channels 2}{pcm {@func concatstrings ["cards.Echo_Echo3G.pcm.center_lfe.0:CARD=" $CARD
]}channels 2}]bindings [{ slave 0 channel 0 }{ slave 0 channel 1 }{ slave 1 channel 0 }]+}
Have you tested with real hardware for surround21 since pulseaudio fail with multi plugin with error -77 ?
http://lists.freedesktop.org/archives/pulseaudio-discuss/2014-November/02267...
Nope, not tested with one that uses a card conf that make use of the multi plugin.
I just happen to have found this particular conf have surround21 missing, so I add it back for consistency:
http://mailman.alsa-project.org/pipermail/alsa-devel/2016-January/103123.htm...
But I do wonder why some card conf needs the multi plugin while others doesn't. I wonder if it had been abused. Feels like it is something that should be implemented in the actual driver code instead.
Those cards allow user to play two audio streams to front and rear devices, they need multi plugin for multi channel playback
http://git.alsa-project.org/?p=alsa-plugins.git;a=commit;h=a0693150dfd428fdd...
It seem that playback of some plugins can be started at first write when start threshold is -1
Pulseaudio call snd_pcm_start when pcm state is already running
Then what about this:
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/SB-XFi.c...
It seems to be allow the "multi-streaming" you mentioned but it doesn't need the multi plugin.
Hmm, I feel like definitions for "ttable PCMs" in Echo_Echo3G.conf should be cleaned up...
No, only those creative sound card emu10k1 and ca0106 allow up to four pcm devices
For hda, you need to change the logic of alsa playback stream similar to multiple alsa capture devices, you can use hint "indep_hp=1" to enable multi stream playback (analog and alt analog playback )
Freebsd allow you to use your hda intel as four independent pcm devices
https://www.freebsd.org/cgi/man.cgi?query=snd_hda&sektion=4&manpath=...
When did I say "hda"? Have you even read the link? I've been talking about X-Fi.
Compare these these two conf: http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/SB-XFi.c... http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/CA0106.c...
BOTH of them shows that the four "stereo" ports they have exist as "device", but the SB-XFi.conf does not use the multi plugin to bind them to provide a surround PCM like CA0106.conf; instead it can simply use the "front" PCM, apparently.
On 18 January 2016 at 14:50, Raymond Yau superquad.vortex2@gmail.com wrote:
Then what about this:
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/SB-XFi.c... It seems to be allow the "multi-streaming" you mentioned but it doesn't need the multi plugin.
Hmm, I feel like definitions for "ttable PCMs" in Echo_Echo3G.conf should be cleaned up...
No, only those creative sound card emu10k1 and ca0106 allow up to four pcm devices
For hda, you need to change the logic of alsa playback stream similar to multiple alsa capture devices, you can use hint "indep_hp=1" to enable multi stream playback (analog and alt analog playback )
Freebsd allow you to use your hda intel as four independent pcm devices
https://www.freebsd.org/cgi/man.cgi?query=snd_hda&sektion=4&manpath=...
Compare these these two conf:
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/SB-XFi.c...
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/CA0106.c...
BOTH of them shows that the four "stereo" ports they have exist as "device", but the SB-XFi.conf does not use the multi plugin to bind them to provide a surround PCM like CA0106.conf; instead it can simply use the "front" PCM, apparently.
These two cards are different, emu10k1 have "rear" device, "centerlfe" and "side" devices
but they use multi plugin instead of surroundxx use pcm.front
SB-XFi.pcm.surround40.0 cards.SB-XFi.pcm.front.0 SB-XFi.pcm.surround51.0 cards.SB-XFi.pcm.front.0 SB-XFi.pcm.surround71.0 cards.SB-XFi.pcm.front.0
different from what? each other? you mean the confs (yeah that's why I pasted the links) or the actual cards (so that they derserve confs in different from SOMEHOW)?
and emu10k1 doesn't even have "side".
I know some of the confs use multi and some use front. that's my question/doubt, coz that seem to imply that some of their drivers are sort of "incomplete".
and you haven't been really making any point/sense tbh. i don't feel like i should continue any discussion/conversation with you. it's out of the scope of my patch anyway.
On 18 January 2016 at 17:54, Raymond Yau superquad.vortex2@gmail.com wrote:
Compare these these two conf:
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/SB-XFi.c...
http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/CA0106.c...
BOTH of them shows that the four "stereo" ports they have exist as "device", but the SB-XFi.conf does not use the multi plugin to bind them to provide a surround PCM like CA0106.conf; instead it can simply use the "front" PCM, apparently.
These two cards are different, emu10k1 have "rear" device, "centerlfe" and "side" devices
but they use multi plugin instead of surroundxx use pcm.front
SB-XFi.pcm.surround40.0 cards.SB-XFi.pcm.front.0 SB-XFi.pcm.surround51.0 cards.SB-XFi.pcm.front.0 SB-XFi.pcm.surround71.0 cards.SB-XFi.pcm.front.0
participants (2)
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Raymond Yau -
Tom Yan