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 2.1 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(int card_idx, pa_proplist *p) {
64 struct udev_device *card = NULL;
70 pa_assert(card_idx >= 0);
72 if (!(udev = udev_new())) {
73 pa_log_error("Failed to allocate udev context.");
77 t = pa_sprintf_malloc("%s/class/sound/card%i", udev_get_sys_path(udev), card_idx);
78 card = udev_device_new_from_syspath(udev, t);
82 pa_log_error("Failed to get card object.");
86 if (!pa_proplist_contains(p, PA_PROP_DEVICE_BUS_PATH))
87 if (((v = udev_device_get_property_value(card, "ID_PATH")) && *v) ||
88 (v = udev_device_get_devpath(card)))
89 pa_proplist_sets(p, PA_PROP_DEVICE_BUS_PATH, v);
91 if (!pa_proplist_contains(p, "sysfs.path"))
92 if ((v = udev_device_get_devpath(card)))
93 pa_proplist_sets(p, "sysfs.path", v);
95 if (!pa_proplist_contains(p, "udev.id"))
96 if ((v = udev_device_get_property_value(card, "ID_ID")) && *v)
97 pa_proplist_sets(p, "udev.id", v);
99 if (!pa_proplist_contains(p, PA_PROP_DEVICE_BUS))
100 if ((v = udev_device_get_property_value(card, "ID_BUS")) && *v)
101 pa_proplist_sets(p, PA_PROP_DEVICE_BUS, v);
103 if (!pa_proplist_contains(p, PA_PROP_DEVICE_VENDOR_ID))
104 if ((id = read_id(card, "ID_VENDOR_ID")) > 0)
105 pa_proplist_setf(p, PA_PROP_DEVICE_VENDOR_ID, "%04x", id);
107 if (!pa_proplist_contains(p, PA_PROP_DEVICE_VENDOR_NAME)) {
108 if ((v = udev_device_get_property_value(card, "ID_VENDOR_FROM_DATABASE")) && *v)
109 pa_proplist_sets(p, PA_PROP_DEVICE_VENDOR_NAME, v);
110 else if ((v = udev_device_get_property_value(card, "ID_VENDOR")) && *v)
111 pa_proplist_sets(p, PA_PROP_DEVICE_VENDOR_NAME, v);
114 if (!pa_proplist_contains(p, PA_PROP_DEVICE_PRODUCT_ID))
115 if ((id = read_id(card, "ID_MODEL_ID")) >= 0)
116 pa_proplist_setf(p, PA_PROP_DEVICE_PRODUCT_ID, "%04x", id);
118 if (!pa_proplist_contains(p, PA_PROP_DEVICE_PRODUCT_NAME)) {
119 if ((v = udev_device_get_property_value(card, "ID_MODEL_FROM_DATABASE")) && *v)
120 pa_proplist_sets(p, PA_PROP_DEVICE_PRODUCT_NAME, v);
121 else if ((v = udev_device_get_property_value(card, "ID_MODEL")) && *v)
122 pa_proplist_sets(p, PA_PROP_DEVICE_PRODUCT_NAME, v);
125 if (!pa_proplist_contains(p, PA_PROP_DEVICE_SERIAL))
126 if ((v = udev_device_get_property_value(card, "ID_SERIAL")) && *v)
127 pa_proplist_sets(p, PA_PROP_DEVICE_SERIAL, v);
129 if (!pa_proplist_contains(p, PA_PROP_DEVICE_CLASS))
130 if ((v = udev_device_get_property_value(card, "SOUND_CLASS")) && *v)
131 pa_proplist_sets(p, PA_PROP_DEVICE_CLASS, v);
133 if (!pa_proplist_contains(p, PA_PROP_DEVICE_FORM_FACTOR))
134 if ((v = udev_device_get_property_value(card, "SOUND_FORM_FACTOR")) && *v)
135 pa_proplist_sets(p, PA_PROP_DEVICE_FORM_FACTOR, v);
137 /* This is normaly not set by the udev rules but may be useful to
138 * allow administrators to overwrite the device description.*/
139 if (!pa_proplist_contains(p, PA_PROP_DEVICE_DESCRIPTION))
140 if ((v = udev_device_get_property_value(card, "SOUND_DESCRIPTION")) && *v)
141 pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, v);
148 udev_device_unref(card);
156 char* pa_udev_get_property(int card_idx, const char *name) {
158 struct udev_device *card = NULL;
162 pa_assert(card_idx >= 0);
165 if (!(udev = udev_new())) {
166 pa_log_error("Failed to allocate udev context.");
170 t = pa_sprintf_malloc("%s/class/sound/card%i", udev_get_sys_path(udev), card_idx);
171 card = udev_device_new_from_syspath(udev, t);
175 pa_log_error("Failed to get card object.");
179 if ((v = udev_device_get_property_value(card, name)) && *v)
185 udev_device_unref(card);