code.delx.au - pulseaudio/blob - polyp/namereg.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio 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.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with polypaudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <assert.h>
  29 #include <string.h>
  30 #include <malloc.h>
  31 #include <stdio.h>
  32
  33 #include "namereg.h"
  34 #include "autoload.h"
  35 #include "source.h"
  36 #include "sink.h"
  37 #include "xmalloc.h"
  38 #include "subscribe.h"
  39
  40 struct namereg_entry {
  41     enum pa_namereg_type type;
  42     char *name;
  43     void *data;
  44 };
  45
  46 void pa_namereg_free(struct pa_core *c) {
  47     assert(c);
  48     if (!c->namereg)
  49         return;
  50     assert(pa_hashmap_ncontents(c->namereg) == 0);
  51     pa_hashmap_free(c->namereg, NULL, NULL);
  52 }
  53
  54 const char *pa_namereg_register(struct pa_core *c, const char *name, enum pa_namereg_type type, void *data, int fail) {
  55     struct namereg_entry *e;
  56     char *n = NULL;
  57     int r;
  58
  59     assert(c && name && data);
  60
  61     if (!c->namereg) {
  62         c->namereg = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  63         assert(c->namereg);
  64     }
  65
  66     if ((e = pa_hashmap_get(c->namereg, name)) && fail)
  67         return NULL;
  68
  69     if (!e)
  70         n = pa_xstrdup(name);
  71     else {
  72         unsigned i;
  73         size_t l = strlen(name);
  74         n = pa_xmalloc(l+3);
  75
  76         for (i = 1; i <= 99; i++) {
  77             snprintf(n, l+2, "%s%u", name, i);
  78
  79             if (!(e = pa_hashmap_get(c->namereg, n)))
  80                 break;
  81         }
  82
  83         if (e) {
  84             pa_xfree(n);
  85             return NULL;
  86         }
  87     }
  88
  89     assert(n);
  90     e = pa_xmalloc(sizeof(struct namereg_entry));
  91     e->type = type;
  92     e->name = n;
  93     e->data = data;
  94
  95     r = pa_hashmap_put(c->namereg, e->name, e);
  96     assert (r >= 0);
  97
  98     return e->name;
  99
 100 }
 101
 102 void pa_namereg_unregister(struct pa_core *c, const char *name) {
 103     struct namereg_entry *e;
 104     int r;
 105     assert(c && name);
 106
 107     e = pa_hashmap_get(c->namereg, name);
 108     assert(e);
 109
 110     r = pa_hashmap_remove(c->namereg, name);
 111     assert(r >= 0);
 112
 113     pa_xfree(e->name);
 114     pa_xfree(e);
 115 }
 116
 117 void* pa_namereg_get(struct pa_core *c, const char *name, enum pa_namereg_type type, int autoload) {
 118     struct namereg_entry *e;
 119     uint32_t index;
 120     char *x = NULL;
 121     void *d = NULL;
 122     assert(c);
 123
 124     if (!name) {
 125         if (type == PA_NAMEREG_SOURCE) {
 126             if (!c->default_source_name) {
 127                 struct pa_source *s;
 128
 129                 for (s = pa_idxset_first(c->sources, &index); s; s = pa_idxset_next(c->sources, &index))
 130                     if (!s->monitor_of) {
 131                         pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
 132                         break;
 133                     }
 134             }
 135
 136             name = c->default_source_name;
 137
 138         } else if (type == PA_NAMEREG_SINK) {
 139
 140             if (!c->default_sink_name) {
 141                 struct pa_sink *s;
 142
 143                 if ((s = pa_idxset_first(c->sinks, NULL)))
 144                     pa_namereg_set_default(c, s->name, PA_NAMEREG_SINK);
 145             }
 146
 147             name = c->default_sink_name;
 148         }
 149     }
 150
 151     if (!name)
 152         return NULL;
 153
 154     if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
 155         if (e->type == e->type)
 156             return e->data;
 157
 158     index = (uint32_t) strtol(name, &x, 0);
 159
 160     if (!x || *x != 0) {
 161
 162         if (autoload) {
 163             pa_autoload_request(c, name, type);
 164
 165             if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
 166                 if (e->type == e->type)
 167                     return e->data;
 168         }
 169
 170         return NULL;
 171     }
 172
 173     if (type == PA_NAMEREG_SINK)
 174         d = pa_idxset_get_by_index(c->sinks, index);
 175     else if (type == PA_NAMEREG_SOURCE)
 176         d = pa_idxset_get_by_index(c->sources, index);
 177     else if (type == PA_NAMEREG_SAMPLE && c->scache)
 178         d = pa_idxset_get_by_index(c->scache, index);
 179
 180     return d;
 181 }
 182
 183 void pa_namereg_set_default(struct pa_core*c, const char *name, enum pa_namereg_type type) {
 184     char **s;
 185     assert(c && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
 186
 187     s = type == PA_NAMEREG_SINK ? &c->default_sink_name : &c->default_source_name;
 188     assert(s);
 189
 190     if (!name && !*s)
 191         return;
 192
 193     if (name && *s && !strcmp(name, *s))
 194         return;
 195
 196     pa_xfree(*s);
 197     *s = pa_xstrdup(name);
 198     pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
 199 }