2 This file is part of PulseAudio.
4 Copyright 2009 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
28 #include <pulse/xmalloc.h>
29 #include <pulse/proplist.h>
31 #include <pulsecore/log.h>
32 #include <pulsecore/core-util.h>
34 #include "udev-util.h"
36 static int read_id(struct udev_device *d, const char *n) {
43 if (!(v = udev_device_get_property_value(d, n)))
46 if (pa_startswith(v, "0x"))
52 if (sscanf(v, "%04x", &u) != 1)
61 int pa_udev_get_info(pa_core *core, pa_proplist *p, int card_idx) {
64 struct udev_device *card;
71 pa_assert(card_idx >= 0);
73 if (!(udev = udev_new())) {
74 pa_log_error("Failed to allocate udev context.");
78 t = pa_sprintf_malloc("%s/class/sound/card%i", udev_get_sys_path(udev), card_idx);
79 card = udev_device_new_from_syspath(udev, t);
83 pa_log_error("Failed to get card object.");
87 if (!pa_proplist_contains(p, PA_PROP_DEVICE_BUS))
88 if ((v = udev_device_get_property_value(card, "ID_BUS")) && *v)
89 pa_proplist_sets(p, PA_PROP_DEVICE_BUS, v);
91 if (!pa_proplist_contains(p, PA_PROP_DEVICE_VENDOR_ID))
92 if ((id = read_id(card, "ID_VENDOR_ID")) > 0 && *v)
93 pa_proplist_setf(p, PA_PROP_DEVICE_VENDOR_ID, "%04x", id);
95 if (!pa_proplist_contains(p, PA_PROP_DEVICE_VENDOR_NAME)) {
96 if ((v = udev_device_get_property_value(card, "ID_VENDOR_FROM_DATABASE")) && *v)
97 pa_proplist_sets(p, PA_PROP_DEVICE_VENDOR_NAME, v);
98 else if ((v = udev_device_get_property_value(card, "ID_VENDOR")) && *v)
99 pa_proplist_sets(p, PA_PROP_DEVICE_VENDOR_NAME, v);
102 if (!pa_proplist_contains(p, PA_PROP_DEVICE_PRODUCT_ID))
103 if ((id = read_id(card, "ID_MODEL_ID")) >= 0)
104 pa_proplist_setf(p, PA_PROP_DEVICE_PRODUCT_ID, "%04x", id);
106 if (!pa_proplist_contains(p, PA_PROP_DEVICE_PRODUCT_NAME)) {
107 if ((v = udev_device_get_property_value(card, "ID_MODEL_FROM_DATABASE")) && *v)
108 pa_proplist_sets(p, PA_PROP_DEVICE_PRODUCT_NAME, v);
109 else if ((v = udev_device_get_property_value(card, "ID_MODEL")) && *v)
110 pa_proplist_sets(p, PA_PROP_DEVICE_PRODUCT_NAME, v);
113 if (!pa_proplist_contains(p, PA_PROP_DEVICE_SERIAL))
114 if ((v = udev_device_get_property_value(card, "ID_SERIAL")) && *v)
115 pa_proplist_sets(p, PA_PROP_DEVICE_SERIAL, v);
117 if (!pa_proplist_contains(p, PA_PROP_DEVICE_FORM_FACTOR))
118 if ((v = udev_device_get_property_value(card, "SOUND_FORM_FACTOR")) && *v)
119 pa_proplist_sets(p, PA_PROP_DEVICE_FORM_FACTOR, v);
121 if (!pa_proplist_contains(p, PA_PROP_DEVICE_BUS_PATH))
122 if ((v = udev_device_get_devpath(card)))
123 pa_proplist_sets(p, PA_PROP_DEVICE_BUS_PATH, v);
125 /* This is normaly not set by th udev rules but may be useful to
126 * allow administrators to overwrite the device description.*/
127 if (!pa_proplist_contains(p, PA_PROP_DEVICE_DESCRIPTION))
128 if ((v = udev_device_get_property_value(card, "SOUND_DESCRIPTION")) && *v)
129 pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, v);
136 udev_device_unref(card);