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/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
PulseAudio 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 2.1 of the License,
or (at your option) any later version.
PulseAudio 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 PulseAudio; 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 <stdlib.h>
#include <string.h>
#include <string.h>
#include <stdio.h>
#include <pulse/xmalloc.h>
#include <pulsecore/source.h>
#include <pulsecore/sink.h>
#include <pulsecore/core-subscribe.h>
#include <pulsecore/core-util.h>
#include <pulsecore/macro.h>
#include "namereg.h"
struct namereg_entry {
pa_namereg_type_t type;
char *name;
void *data;
};
static pa_bool_t is_valid_char(char c) {
return
(c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
(c >= '0' && c <= '9') ||
c == '.' ||
c == '-' ||
c == '_';
}
pa_bool_t pa_namereg_is_valid_name(const char *name) {
const char *c;
pa_assert(name);
if (*name == 0)
return FALSE;
for (c = name; *c && (c-name < PA_NAME_MAX); c++)
if (!is_valid_char(*c))
return FALSE;
if (*c)
return FALSE;
return TRUE;
}
pa_bool_t pa_namereg_is_valid_name_or_wildcard(const char *name, pa_namereg_type_t type) {
pa_assert(name);
if (pa_namereg_is_valid_name(name))
return TRUE;
if (type == PA_NAMEREG_SINK &&
pa_streq(name, "@DEFAULT_SINK@"))
return TRUE;
if (type == PA_NAMEREG_SOURCE &&
(pa_streq(name, "@DEFAULT_SOURCE@") ||
pa_streq(name, "@DEFAULT_MONITOR@")))
return TRUE;
return FALSE;
}
char* pa_namereg_make_valid_name(const char *name) {
const char *a;
char *b, *n;
if (*name == 0)
return NULL;
n = pa_xnew(char, strlen(name)+1);
for (a = name, b = n; *a && (a-name < PA_NAME_MAX); a++, b++)
*b = (char) (is_valid_char(*a) ? *a : '_');
*b = 0;
return n;
}
const char *pa_namereg_register(pa_core *c, const char *name, pa_namereg_type_t type, void *data, pa_bool_t fail) {
struct namereg_entry *e;
char *n = NULL;
pa_assert(c);
pa_assert(name);
pa_assert(data);
if (!*name)
return NULL;
if ((type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE || type == PA_NAMEREG_CARD) &&
!pa_namereg_is_valid_name(name)) {
if (fail)
return NULL;
if (!(name = n = pa_namereg_make_valid_name(name)))
return NULL;
}
if ((e = pa_hashmap_get(c->namereg, name)) && fail) {
pa_xfree(n);
return NULL;
}
if (e) {
unsigned i;
size_t l = strlen(name);
char *k;
if (l+4 > PA_NAME_MAX) {
pa_xfree(n);
return NULL;
}
k = pa_xmalloc(l+4);
for (i = 2; i <= 99; i++) {
pa_snprintf(k, l+4, "%s.%u", name, i);
if (!(e = pa_hashmap_get(c->namereg, k)))
break;
}
if (e) {
pa_xfree(n);
pa_xfree(k);
return NULL;
}
pa_xfree(n);
n = k;
}
e = pa_xnew(struct namereg_entry, 1);
e->type = type;
e->name = n ? n : pa_xstrdup(name);
e->data = data;
pa_assert_se(pa_hashmap_put(c->namereg, e->name, e) >= 0);
/* If a sink or source is registered and there was none registered
* before we inform the clients which then can ask for the default
* sink/source which is then assigned. We don't adjust the default
* sink/source here right away to give the module the chance to
* register more sinks/sources before we choose a new default
* sink/source. */
if ((!c->default_sink && type == PA_NAMEREG_SINK) ||
(!c->default_source && type == PA_NAMEREG_SOURCE))
pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
return e->name;
}
void pa_namereg_unregister(pa_core *c, const char *name) {
struct namereg_entry *e;
pa_assert(c);
pa_assert(name);
pa_assert_se(e = pa_hashmap_remove(c->namereg, name));
if (c->default_sink == e->data)
pa_namereg_set_default_sink(c, NULL);
else if (c->default_source == e->data)
pa_namereg_set_default_source(c, NULL);
pa_xfree(e->name);
pa_xfree(e);
}
void* pa_namereg_get(pa_core *c, const char *name, pa_namereg_type_t type) {
struct namereg_entry *e;
uint32_t idx;
pa_assert(c);
if (type == PA_NAMEREG_SOURCE && (!name || pa_streq(name, "@DEFAULT_SOURCE@"))) {
pa_source *s;
if ((s = pa_namereg_get_default_source(c)))
return s;
} else if (type == PA_NAMEREG_SINK && (!name || pa_streq(name, "@DEFAULT_SINK@"))) {
pa_sink *s;
if ((s = pa_namereg_get_default_sink(c)))
return s;
} else if (type == PA_NAMEREG_SOURCE && name && pa_streq(name, "@DEFAULT_MONITOR@")) {
pa_sink *s;
if ((s = pa_namereg_get(c, NULL, PA_NAMEREG_SINK)))
return s->monitor_source;
}
if (!name)
return NULL;
if ((type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE || type == PA_NAMEREG_CARD) &&
!pa_namereg_is_valid_name(name))
return NULL;
if ((e = pa_hashmap_get(c->namereg, name)))
if (e->type == type)
return e->data;
if (pa_atou(name, &idx) < 0)
return NULL;
if (type == PA_NAMEREG_SINK)
return pa_idxset_get_by_index(c->sinks, idx);
else if (type == PA_NAMEREG_SOURCE)
return pa_idxset_get_by_index(c->sources, idx);
else if (type == PA_NAMEREG_SAMPLE && c->scache)
return pa_idxset_get_by_index(c->scache, idx);
else if (type == PA_NAMEREG_CARD)
return pa_idxset_get_by_index(c->cards, idx);
return NULL;
}
pa_sink* pa_namereg_set_default_sink(pa_core*c, pa_sink *s) {
pa_assert(c);
if (s && !PA_SINK_IS_LINKED(pa_sink_get_state(s)))
return NULL;
if (c->default_sink != s) {
c->default_sink = s;
pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
}
return s;
}
pa_source* pa_namereg_set_default_source(pa_core*c, pa_source *s) {
pa_assert(c);
if (s && !PA_SOURCE_IS_LINKED(pa_source_get_state(s)))
return NULL;
if (c->default_source != s) {
c->default_source = s;
pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
}
return s;
}
pa_sink *pa_namereg_get_default_sink(pa_core *c) {
pa_sink *s, *best = NULL;
uint32_t idx;
pa_assert(c);
if (c->default_sink && PA_SINK_IS_LINKED(pa_sink_get_state(c->default_sink)))
return c->default_sink;
PA_IDXSET_FOREACH(s, c->sinks, idx)
if (PA_SINK_IS_LINKED(pa_sink_get_state(s)))
if (!best || s->priority > best->priority)
best = s;
if (best)
return pa_namereg_set_default_sink(c, best);
return NULL;
}
pa_source *pa_namereg_get_default_source(pa_core *c) {
pa_source *s, *best = NULL;
uint32_t idx;
pa_assert(c);
if (c->default_source && PA_SOURCE_IS_LINKED(pa_source_get_state(c->default_source)))
return c->default_source;
/* First, try to find one that isn't a monitor */
PA_IDXSET_FOREACH(s, c->sources, idx)
if (!s->monitor_of && PA_SOURCE_IS_LINKED(pa_source_get_state(s)))
if (!best ||
s->priority > best->priority)
best = s;
if (best)
return pa_namereg_set_default_source(c, best);
/* Then, fallback to a monitor */
PA_IDXSET_FOREACH(s, c->sources, idx)
if (PA_SOURCE_IS_LINKED(pa_source_get_state(s)))
if (!best ||
s->priority > best->priority ||
(s->priority == best->priority &&
s->monitor_of &&
best->monitor_of &&
s->monitor_of->priority > best->monitor_of->priority))
best = s;
if (best)
return pa_namereg_set_default_source(c, best);
return NULL;
}
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