pipewire/spa/plugins/alsa/acp/meson.build

acp_sources = [
  'acp.c',
  'compat.c',
  'alsa-mixer.c',
  'alsa-ucm.c',
  'alsa-util.c',
  'conf-parser.c',
]

acp_c_args = [
  '-DHAVE_ALSA_UCM',
  '-DHAVE_READLINK',
]

acp_lib = static_library(
  'acp',
  acp_sources,
  c_args : acp_c_args,
  include_directories : [configinc, includes_inc ],
  dependencies : [ spa_dep, alsa_dep, mathlib, ]
  )
acp_dep = declare_dependency(link_with: acp_lib)

executable('test-alsa-path-select',
  [ 'test-alsa-path-select.c' ],
  c_args : acp_c_args,
  include_directories : [configinc, includes_inc ],
  dependencies : [ spa_dep, alsa_dep, mathlib, ],
  link_with : [ acp_lib ],
  install : false,
)
alsa-acp: Add libacp based card device libacp is a port and wrapper around the pulseaudio card profile code. It uses a set of templates for construct a card profile and mixer port settings. It also has support for UCM when available for the hardware. 2020-05-15 19:42:15 +02:00			`acp_sources = [`
			`'acp.c',`
			`'compat.c',`
			`'alsa-mixer.c',`
			`'alsa-ucm.c',`
			`'alsa-util.c',`
			`'conf-parser.c',`
			`]`

			`acp_c_args = [`
			`'-DHAVE_ALSA_UCM',`
			`'-DHAVE_READLINK',`
			`]`

			`acp_lib = static_library(`
			`'acp',`
			`acp_sources,`
			`c_args : acp_c_args,`
treewide: meson.build: use dependency variable for SPA Use `spa_dep` everywhere instead of `spa_inc`, and remove `spa_inc` altogether. 2021-12-28 16:04:06 +01:00			`include_directories : [configinc, includes_inc ],`
			`dependencies : [ spa_dep, alsa_dep, mathlib, ]`
acp: don't install library for now 2020-07-06 12:58:33 +02:00			`)`
spa: declare a dependency for each used library in meson.build For SPA libraries that we link against elsewhere in the tree, declare a declare a dependency "foo_dep" for that library that specifies how to link to it. Then use that dependency in the various targets. This removes the knowledge of how to link with the library from the target which can treat it as just another dependency. In the case of optional libraries (e.g. the journal support lib) we can then use declare_dependency() to declare an empty dependencies and thus link them unconditionally in the target. 2021-09-20 08:59:49 +10:00			`acp_dep = declare_dependency(link_with: acp_lib)`
alsa: Fix IEC958 digital output not unmuted on path activation When selecting an HDMI/DisplayPort (IEC958) output path, the hardware mute switch remains in kernel default state (muted), causing no audio output despite correct software routing. Root cause: pa_alsa_path_select() only sets mute switches when mute_during_activation is enabled. No mixer paths enable this setting, making the switch configuration code unreachable for IEC958 paths. Solution: Always set mute switches to match device mute status after path activation, regardless of mute_during_activation setting. Testing: Added test-alsa-path-select tool to verify the fix. - Loads mixer path and calls pa_alsa_path_select() - Verifies switch states match expected values - Tested on AMD Radeon HDMI and Realtek ALC257 analog Manual verification: - Before: IEC958 switch OFF, no audio - After: IEC958 switch set correctly, audio works This bug was inherited from PulseAudio's ALSA mixer path code where HDMI path configurations lack IEC958 unmute sections. Fixes: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/3261 See-Also: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/562 See-Also: https://github.com/alsa-project/alsa-ucm-conf/commit/33be660e4b1e75c19d5332556c3d2636dd3344bf See-Also: https://bugs.launchpad.net/hundredpapercuts/+bug/681996 2025-10-04 16:31:01 +02:00
			`executable('test-alsa-path-select',`
			`[ 'test-alsa-path-select.c' ],`
			`c_args : acp_c_args,`
			`include_directories : [configinc, includes_inc ],`
			`dependencies : [ spa_dep, alsa_dep, mathlib, ],`
			`link_with : [ acp_lib ],`
			`install : false,`
			`)`