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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <assert.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <polyp/xmalloc.h>
#include <polypcore/core-error.h>
#include <polypcore/module.h>
#include <polypcore/modargs.h>
#include <polypcore/log.h>
#include <polypcore/core-util.h>
#include "module-detect-symdef.h"
PA_MODULE_AUTHOR("Lennart Poettering")
PA_MODULE_DESCRIPTION("Detect available audio hardware and load matching drivers")
PA_MODULE_VERSION(PACKAGE_VERSION)
PA_MODULE_USAGE("just-one=<boolean>")
#ifdef HAVE_ALSA
static int detect_alsa(pa_core *c, int just_one) {
FILE *f;
int n = 0, n_sink = 0, n_source = 0;
if (!(f = fopen("/proc/asound/devices", "r"))) {
if (errno != ENOENT)
pa_log_error(__FILE__": open(\"/proc/asound/devices\") failed: %s", pa_cstrerror(errno));
return -1;
}
while (!feof(f)) {
char line[64], args[64];
unsigned device, subdevice;
int is_sink;
if (!fgets(line, sizeof(line), f))
break;
line[strcspn(line, "\r\n")] = 0;
if (pa_endswith(line, "digital audio playback"))
is_sink = 1;
else if (pa_endswith(line, "digital audio capture"))
is_sink = 0;
else
continue;
if (just_one && is_sink && n_sink >= 1)
continue;
if (just_one && !is_sink && n_source >= 1)
continue;
if (sscanf(line, " %*i: [%u- %u]: ", &device, &subdevice) != 2)
continue;
/* Only one sink per device */
if (subdevice != 0)
continue;
snprintf(args, sizeof(args), "device=hw:%u", device);
if (!pa_module_load(c, is_sink ? "module-alsa-sink" : "module-alsa-source", args))
continue;
n++;
if (is_sink)
n_sink++;
else
n_source++;
}
fclose(f);
return n;
}
#endif
#ifdef HAVE_OSS
static int detect_oss(pa_core *c, int just_one) {
FILE *f;
int n = 0, b = 0;
if (!(f = fopen("/dev/sndstat", "r")) &&
!(f = fopen("/proc/sndstat", "r")) &&
!(f = fopen("/proc/asound/oss/sndstat", "r"))) {
if (errno != ENOENT)
pa_log_error(__FILE__": failed to open OSS sndstat device: %s", pa_cstrerror(errno));
return -1;
}
while (!feof(f)) {
char line[64], args[64];
unsigned device;
if (!fgets(line, sizeof(line), f))
break;
line[strcspn(line, "\r\n")] = 0;
if (!b) {
b = strcmp(line, "Audio devices:") == 0;
continue;
}
if (line[0] == 0)
break;
if (sscanf(line, "%u: ", &device) != 1)
continue;
if (device == 0)
snprintf(args, sizeof(args), "device=/dev/dsp");
else
snprintf(args, sizeof(args), "device=/dev/dsp%u", device);
if (!pa_module_load(c, "module-oss", args))
continue;
n++;
if (just_one)
break;
}
fclose(f);
return n;
}
#endif
#ifdef HAVE_SOLARIS
static int detect_solaris(pa_core *c, int just_one) {
struct stat s;
const char *dev;
char args[64];
dev = getenv("AUDIODEV");
if (!dev)
dev = "/dev/audio";
if (stat(dev, &s) < 0) {
if (errno != ENOENT)
pa_log_error(__FILE__": failed to open device %s: %s", dev, pa_cstrerror(errno));
return -1;
}
if (!S_ISCHR(s.st_mode))
return 0;
snprintf(args, sizeof(args), "device=%s", dev);
if (!pa_module_load(c, "module-solaris", args))
return 0;
return 1;
}
#endif
#ifdef OS_IS_WIN32
static int detect_waveout(pa_core *c, int just_one) {
/*
* FIXME: No point in enumerating devices until the plugin supports
* selecting anything but the first.
*/
if (!pa_module_load(c, "module-waveout", ""))
return 0;
return 1;
}
#endif
int pa__init(pa_core *c, pa_module*m) {
int just_one = 0, n = 0;
pa_modargs *ma;
static const char* const valid_modargs[] = {
"just-one",
NULL
};
assert(c);
assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log(__FILE__": Failed to parse module arguments");
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "just-one", &just_one) < 0) {
pa_log(__FILE__": just_one= expects a boolean argument.");
goto fail;
}
#if HAVE_ALSA
if ((n = detect_alsa(c, just_one)) <= 0)
#endif
#if HAVE_OSS
if ((n = detect_oss(c, just_one)) <= 0)
#endif
#if HAVE_SOLARIS
if ((n = detect_solaris(c, just_one)) <= 0)
#endif
#if OS_IS_WIN32
if ((n = detect_waveout(c, just_one)) <= 0)
#endif
{
pa_log_warn(__FILE__": failed to detect any sound hardware.");
goto fail;
}
pa_log_info(__FILE__": loaded %i modules.", n);
/* We were successful and can unload ourselves now. */
pa_module_unload_request(m);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
return -1;
}
void pa__done(PA_GCC_UNUSED pa_core *c, PA_GCC_UNUSED pa_module*m) {
/* NOP */
}
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