4 This file is part of PulseAudio.
6 Copyright 2006 Lennart Poettering
7 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
8 Copyright 2006 Diego Pettenò
10 PulseAudio is free software; you can redistribute it and/or modify
11 it under the terms of the GNU Lesser General Public License as published
12 by the Free Software Foundation; either version 2 of the License,
13 or (at your option) any later version.
15 PulseAudio is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with PulseAudio; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
37 #include <sys/types.h>
40 #include <pulse/xmalloc.h>
42 #include <pulsecore/core-error.h>
43 #include <pulsecore/module.h>
44 #include <pulsecore/modargs.h>
45 #include <pulsecore/log.h>
46 #include <pulsecore/core-util.h>
48 #include "module-detect-symdef.h"
50 PA_MODULE_AUTHOR("Lennart Poettering")
51 PA_MODULE_DESCRIPTION("Detect available audio hardware and load matching drivers")
52 PA_MODULE_VERSION(PACKAGE_VERSION)
53 PA_MODULE_USAGE("just-one=<boolean>")
57 static int detect_alsa(pa_core *c, int just_one) {
59 int n = 0, n_sink = 0, n_source = 0;
61 if (!(f = fopen("/proc/asound/devices", "r"))) {
64 pa_log_error("open(\"/proc/asound/devices\") failed: %s", pa_cstrerror(errno));
70 char line[64], args[64];
71 unsigned device, subdevice;
74 if (!fgets(line, sizeof(line), f))
77 line[strcspn(line, "\r\n")] = 0;
79 if (pa_endswith(line, "digital audio playback"))
81 else if (pa_endswith(line, "digital audio capture"))
86 if (just_one && is_sink && n_sink >= 1)
89 if (just_one && !is_sink && n_source >= 1)
92 if (sscanf(line, " %*i: [%u- %u]: ", &device, &subdevice) != 2)
95 /* Only one sink per device */
99 snprintf(args, sizeof(args), "device=hw:%u", device);
100 if (!pa_module_load(c, is_sink ? "module-alsa-sink" : "module-alsa-source", args))
118 static int detect_oss(pa_core *c, int just_one) {
122 if (!(f = fopen("/dev/sndstat", "r")) &&
123 !(f = fopen("/proc/sndstat", "r")) &&
124 !(f = fopen("/proc/asound/oss/sndstat", "r"))) {
127 pa_log_error("failed to open OSS sndstat device: %s", pa_cstrerror(errno));
133 char line[64], args[64];
136 if (!fgets(line, sizeof(line), f))
139 line[strcspn(line, "\r\n")] = 0;
142 b = strcmp(line, "Audio devices:") == 0 || strcmp(line, "Installed devices:") == 0;
149 if (sscanf(line, "%u: ", &device) == 1) {
151 snprintf(args, sizeof(args), "device=/dev/dsp");
153 snprintf(args, sizeof(args), "device=/dev/dsp%u", device);
155 if (!pa_module_load(c, "module-oss", args))
158 } else if (sscanf(line, "pcm%u: ", &device) == 1) {
159 /* FreeBSD support, the devices are named /dev/dsp0.0, dsp0.1 and so on */
160 snprintf(args, sizeof(args), "device=/dev/dsp%u.0", device);
162 if (!pa_module_load(c, "module-oss", args))
178 static int detect_solaris(pa_core *c, int just_one) {
183 dev = getenv("AUDIODEV");
187 if (stat(dev, &s) < 0) {
189 pa_log_error("failed to open device %s: %s", dev, pa_cstrerror(errno));
193 if (!S_ISCHR(s.st_mode))
196 snprintf(args, sizeof(args), "device=%s", dev);
198 if (!pa_module_load(c, "module-solaris", args))
206 static int detect_waveout(pa_core *c, int just_one) {
208 * FIXME: No point in enumerating devices until the plugin supports
209 * selecting anything but the first.
211 if (!pa_module_load(c, "module-waveout", ""))
218 int pa__init(pa_core *c, pa_module*m) {
219 int just_one = 0, n = 0;
222 static const char* const valid_modargs[] = {
230 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
231 pa_log("Failed to parse module arguments");
235 if (pa_modargs_get_value_boolean(ma, "just-one", &just_one) < 0) {
236 pa_log("just_one= expects a boolean argument.");
241 if ((n = detect_alsa(c, just_one)) <= 0)
244 if ((n = detect_oss(c, just_one)) <= 0)
247 if ((n = detect_solaris(c, just_one)) <= 0)
250 if ((n = detect_waveout(c, just_one)) <= 0)
253 pa_log_warn("failed to detect any sound hardware.");
257 pa_log_info("loaded %i modules.", n);
259 /* We were successful and can unload ourselves now. */
260 pa_module_unload_request(m);
274 void pa__done(PA_GCC_UNUSED pa_core *c, PA_GCC_UNUSED pa_module*m) {