diff options
author | Lennart Poettering <lennart@poettering.net> | 2009-06-17 03:45:14 +0200 |
---|---|---|
committer | Lennart Poettering <lennart@poettering.net> | 2009-06-17 03:45:14 +0200 |
commit | 31575f7766d6ff39665b64a3a04412eff1c39957 (patch) | |
tree | dfb35a4918c8242a60d94120defd4e97beaff2c1 /src/modules/udev-util.c | |
parent | e9c70ac41bb86b7778b67284d8a0cae51f6a9ed3 (diff) |
alsa: rework mixer logic
Completely rework mixer logic. This now allows controlling a full set of
elements from a single sink's volume slider/mute button.
This also introduces sink and source "ports" that can be used to choose
different input or output ports with the UI. (i.e. "mic"/"line-in" or
"speaker"/"headphones".
The mixer paths and device maps are now configered in external
configuration files and can be tweaked as necessary.
Diffstat (limited to 'src/modules/udev-util.c')
-rw-r--r-- | src/modules/udev-util.c | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/src/modules/udev-util.c b/src/modules/udev-util.c index de8f5f2f..cc824465 100644 --- a/src/modules/udev-util.c +++ b/src/modules/udev-util.c @@ -58,7 +58,7 @@ static int read_id(struct udev_device *d, const char *n) { return u; } -int pa_udev_get_info(pa_core *core, pa_proplist *p, int card_idx) { +int pa_udev_get_info(int card_idx, pa_proplist *p) { int r = -1; struct udev *udev; struct udev_device *card = NULL; @@ -66,7 +66,6 @@ int pa_udev_get_info(pa_core *core, pa_proplist *p, int card_idx) { const char *v; int id; - pa_assert(core); pa_assert(p); pa_assert(card_idx >= 0); @@ -153,3 +152,40 @@ finish: return r; } + +char* pa_udev_get_property(int card_idx, const char *name) { + struct udev *udev; + struct udev_device *card = NULL; + char *t, *r = NULL; + const char *v; + + pa_assert(card_idx >= 0); + pa_assert(name); + + if (!(udev = udev_new())) { + pa_log_error("Failed to allocate udev context."); + goto finish; + } + + t = pa_sprintf_malloc("%s/class/sound/card%i", udev_get_sys_path(udev), card_idx); + card = udev_device_new_from_syspath(udev, t); + pa_xfree(t); + + if (!card) { + pa_log_error("Failed to get card object."); + goto finish; + } + + if ((v = udev_device_get_property_value(card, name)) && *v) + r = pa_xstrdup(v); + +finish: + + if (card) + udev_device_unref(card); + + if (udev) + udev_unref(udev); + + return r; +} |