diff options
Diffstat (limited to '')
| -rw-r--r-- | src/pulsecore/namereg.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/pulsecore/namereg.c b/src/pulsecore/namereg.c new file mode 100644 index 0000000..0b73885 --- /dev/null +++ b/src/pulsecore/namereg.c @@ -0,0 +1,227 @@ +/*** + 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, see <http://www.gnu.org/licenses/>. +***/ + +#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 bool is_valid_char(char c) { + return + (c >= 'a' && c <= 'z') || + (c >= 'A' && c <= 'Z') || + (c >= '0' && c <= '9') || + c == '.' || + c == '-' || + c == '_'; +} + +bool 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; +} + +bool 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, bool 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); + + 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)); + 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@"))) { + return c->default_source; + + } else if (type == PA_NAMEREG_SINK && (!name || pa_streq(name, "@DEFAULT_SINK@"))) { + return c->default_sink; + + } else if (type == PA_NAMEREG_SOURCE && name && pa_streq(name, "@DEFAULT_MONITOR@")) { + if (c->default_sink) + return c->default_sink->monitor_source; + else + return NULL; + } + + 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; +} |