Since glibc-2.43:
For ISO C23, the functions bsearch, memchr, strchr, strpbrk, strrchr,
strstr, wcschr, wcspbrk, wcsrchr, wcsstr and wmemchr that return pointers
into their input arrays now have definitions as macros that return a
pointer to a const-qualified type when the input argument is a pointer
to a const-qualified type.
https://lists.gnu.org/archive/html/info-gnu/2026-01/msg00005.html
Signed-off-by: Rudi Heitbaum <rudi@heitbaum.com>
It may be useful to check additional sysfs parameters like USB descriptors
to determine the exact hardware capabilities.
Introduce 'sys-card' substitution and 'sys' substitution to allow data
fetching from given range. Also, add conversion to hexadecimal format
when the source file has binary contents.
Example - fetch bytes from positions 0x10..0x15 (6 bytes):
Define.Bytes1 "${sys-card:[type=hex,pos=0x10,size=6]device/../descriptors}"
Example - fetch one byte from position 0x22:
Define.Bytes2 "${sys-card:[type=hex,pos=0x22]device/../descriptors}"
Replace type=hex or omit this variable settings to work with ASCII
characters.
Link: https://github.com/alsa-project/alsa-ucm-conf/issues/444
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Continue the work in commit ba86ac55 ("conf: Use LFS calls when reading
config files") and fix the UCM code, too.
Fixes: https://github.com/alsa-project/alsa-lib/pull/223
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The arguments are set as temporary variables as /MACRO_NAME/_/ARGUMENT_NAME/.
Example:
# define new macro MyMacro with arguments ctl_name and ctl_value
DefineMacro.MyMacro {
BootSequence [
cset "name='${var:MyMacro_ctl_name}' ${var:MyMacro_ctl_value}"
]
}
# instantiate macro for Speaker control (short version)
Macro.headphone.MyMacro "ctl_name='Speaker Switch',ctl_value=off"
# instantiate macro for Mic control (second version)
Macro.mic.MyMacro {
ctl_name "Mic Switch"
ctl_value "off"
}
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
There was already a variable substitution. Skip it for the eval: case.
Fixes: 7b6da9ee ("ucm: add ${eval:EXPR} substitution (Syntax 5)")
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
It is useful to do simple integer math in UCM configurations, too.
Use snd_config_evaluate_string() string for this job.
Example:
${eval:1+1}
${eval:100*$var1}
${eval:$[$var2+1]/5}
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
It may be useful to find a correct card or device through
control API information fields.
Increase the syntax version to 4.
Examples:
${find-card:field=name,regex='HDA Intel'}
${find-device:type=pcm,field=id,regex='HDMI 1$'}
${find-device:ctl=hw:acp,type=pcm,field=id,regex=DMIC}
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
We need to define the common shared configuration like for multiple
HDMI devices or so. Substitute the whole merged configuration tree
including identifiers.
Fixes: https://github.com/alsa-project/alsa-lib/issues/67
Fixes: dcef48f13d
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Recent ucm-conf changes introduce checks like this one in various places:
If.mspk {
Condition {
Type String
Empty "${var:MonoSpeaker}"
}
True ...
False ...
}
The 'Empty "${var:MonoSpeaker}"' part can only every succeed if we do:
Define.MonoSpeaker ""
But so far that would result in an error like this one:
ALSA lib ucm_subs.c:367:(uc_mgr_get_substituted_value) variable '${var:MonoSpeaker}' is not defined in this context!
ALSA lib main.c:983:(snd_use_case_mgr_open) error: failed to import cht-bsw-rt5672 use case configuration -22
alsaucm: error failed to open sound card cht-bsw-rt5672: Invalid argument
This commit fixes this by allowing empty values for "${var:...}"
substitutions.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The syntax is ${CardNumberByName:CARDNAME[#INDEX]}.
The CARDNAME is the ALSA's soundcard name (short form).
The INDEX is the instance (0 = first, 1 = second etc.).
Example: ${CardNumberByName:HDA Intel PCH}
(which is identical to ${CardNumberByName:HDA Intel PCH#0})
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Example (set variable 'Module' to the kernel module name for the given card):
Define.SysfsPath "class/sound/card${CardNumber}/device/driver"
Define.Module "${sys:$SysfsPath}"
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
It may be useful to ignore the errors where the environment
or sysfs values are not defined for the specific hardware.
Enhance substitution for 'syntax 3' so $${} substitution
means ignore the errors (return an empty string).
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The syntax is ${CardIdByName:CARDNAME[#INDEX]}.
The CARDNAME is the ALSA's soundcard name (short form).
The INDEX is the instance (0 = first, 1 = second etc.).
Example: ${CardIdByName:HDA Intel PCH}
(which is identical to ${CardIdByName:HDA Intel PCH#0})
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
It may be useful for the library files to use the runtime configuration
variables.
Example:
Define.Var1 "hw:${CardId},2"
Value.PlaybackPCM "${var:Var1}"
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Since the UCM profiles for all Bay- and Cherry-Trail SST cards have been
moved over to UCM2, parsing them fails with:
ALSA lib ucm_subs.c:220:(uc_mgr_get_substituted_value) variable '${CardComponents}' is not defined in this context!
This completely breaks audio support on all Bay- and Cherry-Trail devices.
This is caused by these non-SOF ASoC using cards having an empty
CardComponents list. Which in itself is fine, but is rejected by
the ucm_subs.c code. This commit changes the ucm_subs code to accept
an empty string as a valid value for CardComponents restoring audio
functionality on these boards.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The syntax is simple:
If./any-if-identificator/ {
Condition {
Type /type_here/
/optional defines/
}
True {
/block used when condition is evaluated as true/
}
False {
/block used when condition is evaluated as false/
}
}
The Type "ControlExists" is implemented:
Condition {
Type ControlExists
Device "hw:${CardId}"
Control "iface=CARD,name='Headphone Jack'"
}
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
