[alsa-devel] How to redefine "default" to be equivalent to "sysdefault"?
Hi,
I have a file with the following contents:
# This file an alsa configuration file, used by pasuspender to make the # "default" Alsa device work while PulseAudio is in suspended state.
# Include the system configuration first. Is there any easier way to do this? # 14 lines for including one file is a bit much... @hooks [ { func load files [ { @func concat strings [ { @func datadir } "/alsa.conf" ] } ] } ]
# Redefine "default" to be the same as "sysdefault". On most systems # "sysdefault" is configured to use dmix. pcm.!default sysdefault
That doesn't do what I want it to do. When I run
ALSA_CONFIG_PATH=/path/to/file.conf aplay -Ddefault ~/test.wav
aplay still uses pulseaudio. Using "-Dsysdefault" instead of "-Ddefault" doesn't use pulseaudio, so "sysdefault" does what it's supposed to do. The problem is then: why doesn't "default" behave the same way as "sysdefault"?
What error did I make?
Below is "aplay -L" output with and without setting the environment variable. When the environment variable is set, "default" is listed twice, and "null" and "pulse" are included in the list while they are not included in the list when running aplay without the environment variable. What causes those differences?
ALSA_CONFIG_PATH=/path/to/file.conf aplay -L
default Playback/recording through the PulseAudio sound server null Discard all samples (playback) or generate zero samples (capture) pulse Playback/recording through the PulseAudio sound server default Playback/recording through the PulseAudio sound server sysdefault:CARD=Intel HDA Intel, AD198x Analog Default Audio Device front:CARD=Intel,DEV=0 HDA Intel, AD198x Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Intel,DEV=0 HDA Intel, AD198x Digital IEC958 (S/PDIF) Digital Audio Output
aplay -L
default Playback/recording through the PulseAudio sound server sysdefault:CARD=Intel HDA Intel, AD198x Analog Default Audio Device front:CARD=Intel,DEV=0 HDA Intel, AD198x Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Intel,DEV=0 HDA Intel, AD198x Digital IEC958 (S/PDIF) Digital Audio Output
At Wed, 13 Jun 2012 10:57:34 +0300, Tanu Kaskinen wrote:
Hi,
I have a file with the following contents:
# This file an alsa configuration file, used by pasuspender to make the # "default" Alsa device work while PulseAudio is in suspended state.
# Include the system configuration first. Is there any easier way to do this? # 14 lines for including one file is a bit much... @hooks [ { func load files [ { @func concat strings [ { @func datadir } "/alsa.conf" ] } ] } ]
# Redefine "default" to be the same as "sysdefault". On most systems # "sysdefault" is configured to use dmix. pcm.!default sysdefault
That doesn't do what I want it to do. When I run
ALSA_CONFIG_PATH=/path/to/file.conf aplay -Ddefault ~/test.wav
Doesn't ALSA_CONFIG_PATH=/path/to/file.conf:/usr/share/alsa/alsa.conf work? $ALSA_CONFIG_PATH overrides the whole default paths, so it doesn't include even sysdefault definition unless you specify multiple paths.
Takashi
aplay still uses pulseaudio. Using "-Dsysdefault" instead of "-Ddefault" doesn't use pulseaudio, so "sysdefault" does what it's supposed to do. The problem is then: why doesn't "default" behave the same way as "sysdefault"?
What error did I make?
Below is "aplay -L" output with and without setting the environment variable. When the environment variable is set, "default" is listed twice, and "null" and "pulse" are included in the list while they are not included in the list when running aplay without the environment variable. What causes those differences?
ALSA_CONFIG_PATH=/path/to/file.conf aplay -L
default Playback/recording through the PulseAudio sound server null Discard all samples (playback) or generate zero samples (capture) pulse Playback/recording through the PulseAudio sound server default Playback/recording through the PulseAudio sound server sysdefault:CARD=Intel HDA Intel, AD198x Analog Default Audio Device front:CARD=Intel,DEV=0 HDA Intel, AD198x Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Intel,DEV=0 HDA Intel, AD198x Digital IEC958 (S/PDIF) Digital Audio Output
aplay -L
default Playback/recording through the PulseAudio sound server sysdefault:CARD=Intel HDA Intel, AD198x Analog Default Audio Device front:CARD=Intel,DEV=0 HDA Intel, AD198x Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, AD198x Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Intel,DEV=0 HDA Intel, AD198x Digital IEC958 (S/PDIF) Digital Audio Output
-- Tanu
Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
On Mon, 2012-06-18 at 15:45 +0200, Takashi Iwai wrote:
At Wed, 13 Jun 2012 10:57:34 +0300, Tanu Kaskinen wrote:
Hi,
I have a file with the following contents:
# This file an alsa configuration file, used by pasuspender to make the # "default" Alsa device work while PulseAudio is in suspended state.
# Include the system configuration first. Is there any easier way to do this? # 14 lines for including one file is a bit much... @hooks [ { func load files [ { @func concat strings [ { @func datadir } "/alsa.conf" ] } ] } ]
# Redefine "default" to be the same as "sysdefault". On most systems # "sysdefault" is configured to use dmix. pcm.!default sysdefault
That doesn't do what I want it to do. When I run
ALSA_CONFIG_PATH=/path/to/file.conf aplay -Ddefault ~/test.wavDoesn't ALSA_CONFIG_PATH=/path/to/file.conf:/usr/share/alsa/alsa.conf work?
I didn't know that I can give multiple files, so I haven't tried. One minor problem with this approach is that the alsa.conf path would be hardcoded, instead of using $(datadir)/alsa.conf.
$ALSA_CONFIG_PATH overrides the whole default paths, so it doesn't include even sysdefault definition unless you specify multiple paths.
Yes, but did you miss the part entirely where I load alsa.conf in the beginning of the custom configuration file? That should work too, right?
I know that alsa.conf is being loaded, because if I comment out the part that loads alsa.conf, I indeed get an error saying that "sysdefault" is not defined.
At Mon, 18 Jun 2012 17:17:34 +0300, Tanu Kaskinen wrote:
On Mon, 2012-06-18 at 15:45 +0200, Takashi Iwai wrote:
At Wed, 13 Jun 2012 10:57:34 +0300, Tanu Kaskinen wrote:
Hi,
I have a file with the following contents:
# This file an alsa configuration file, used by pasuspender to make the # "default" Alsa device work while PulseAudio is in suspended state.
# Include the system configuration first. Is there any easier way to do this? # 14 lines for including one file is a bit much... @hooks [ { func load files [ { @func concat strings [ { @func datadir } "/alsa.conf" ] } ] } ]
# Redefine "default" to be the same as "sysdefault". On most systems # "sysdefault" is configured to use dmix. pcm.!default sysdefault
That doesn't do what I want it to do. When I run
ALSA_CONFIG_PATH=/path/to/file.conf aplay -Ddefault ~/test.wavDoesn't ALSA_CONFIG_PATH=/path/to/file.conf:/usr/share/alsa/alsa.conf work?
I didn't know that I can give multiple files, so I haven't tried. One minor problem with this approach is that the alsa.conf path would be hardcoded, instead of using $(datadir)/alsa.conf.
$ALSA_CONFIG_PATH overrides the whole default paths, so it doesn't include even sysdefault definition unless you specify multiple paths.
Yes, but did you miss the part entirely where I load alsa.conf in the beginning of the custom configuration file? That should work too, right?
Ah, OK, I somehow didn't think of that part. Essentially, the oneliner below replaces the 14 lines :)
confdir:alsa.conf pcm.!default sysdefault
Takashi
On Mon, 2012-06-18 at 17:17 +0300, Tanu Kaskinen wrote:
On Mon, 2012-06-18 at 15:45 +0200, Takashi Iwai wrote:
At Wed, 13 Jun 2012 10:57:34 +0300, Tanu Kaskinen wrote:
Hi,
I have a file with the following contents:
# This file an alsa configuration file, used by pasuspender to make the # "default" Alsa device work while PulseAudio is in suspended state.
# Include the system configuration first. Is there any easier way to do this? # 14 lines for including one file is a bit much... @hooks [ { func load files [ { @func concat strings [ { @func datadir } "/alsa.conf" ] } ] } ]
As a sidenote, I've now discovered that the cumbersome hooks block can be replaced simply with
# Redefine "default" to be the same as "sysdefault". On most systems # "sysdefault" is configured to use dmix. pcm.!default sysdefault
That doesn't do what I want it to do. When I run
ALSA_CONFIG_PATH=/path/to/file.conf aplay -Ddefault ~/test.wavDoesn't ALSA_CONFIG_PATH=/path/to/file.conf:/usr/share/alsa/alsa.conf work?
I didn't know that I can give multiple files, so I haven't tried. One minor problem with this approach is that the alsa.conf path would be hardcoded, instead of using $(datadir)/alsa.conf.
I tried that now, and it doesn't work any better - "default" still goes through pulseaudio.
participants (2)
-
Takashi Iwai -
Tanu Kaskinen