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 Lesser 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 Lesser 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 <stdio.h>
  31
  32 #include "namereg.h"
  33 #include "autoload.h"
  34 #include "source.h"
  35 #include "sink.h"
  36 #include "xmalloc.h"
  37 #include "subscribe.h"
  38 #include "util.h"
  39
  40 struct namereg_entry {
  41     pa_namereg_type_t type;
  42     char *name;
  43     void *data;
  44 };
  45
  46 void pa_namereg_free(pa_core *c) {
  47     assert(c);
  48     if (!c->namereg)
  49         return;
  50     assert(pa_hashmap_size(c->namereg) == 0);
  51     pa_hashmap_free(c->namereg, NULL, NULL);
  52 }
  53
  54 const char *pa_namereg_register(pa_core *c, const char *name, pa_namereg_type_t 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(pa_core *c, const char *name) {
 103     struct namereg_entry *e;
 104     assert(c && name);
 105
 106     e = pa_hashmap_remove(c->namereg, name);
 107     assert(e);
 108
 109     pa_xfree(e->name);
 110     pa_xfree(e);
 111 }
 112
 113 void* pa_namereg_get(pa_core *c, const char *name, pa_namereg_type_t type, int autoload) {
 114     struct namereg_entry *e;
 115     uint32_t idx;
 116     assert(c);
 117
 118     if (!name) {
 119         if (type == PA_NAMEREG_SOURCE)
 120             name = pa_namereg_get_default_source_name(c);
 121         else if (type == PA_NAMEREG_SINK)
 122             name = pa_namereg_get_default_sink_name(c);
 123     }
 124
 125     if (!name)
 126         return NULL;
 127
 128     if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
 129         if (e->type == e->type)
 130             return e->data;
 131
 132     if (pa_atou(name, &idx) < 0) {
 133
 134         if (autoload) {
 135             pa_autoload_request(c, name, type);
 136
 137             if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
 138                 if (e->type == e->type)
 139                     return e->data;
 140         }
 141
 142         return NULL;
 143     }
 144
 145     if (type == PA_NAMEREG_SINK)
 146         return pa_idxset_get_by_index(c->sinks, idx);
 147     else if (type == PA_NAMEREG_SOURCE)
 148         return pa_idxset_get_by_index(c->sources, idx);
 149     else if (type == PA_NAMEREG_SAMPLE && c->scache)
 150         return pa_idxset_get_by_index(c->scache, idx);
 151
 152     return NULL;
 153 }
 154
 155 void pa_namereg_set_default(pa_core*c, const char *name, pa_namereg_type_t type) {
 156     char **s;
 157     assert(c && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
 158
 159     s = type == PA_NAMEREG_SINK ? &c->default_sink_name : &c->default_source_name;
 160     assert(s);
 161
 162     if (!name && !*s)
 163         return;
 164
 165     if (name && *s && !strcmp(name, *s))
 166         return;
 167
 168     pa_xfree(*s);
 169     *s = pa_xstrdup(name);
 170     pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
 171 }
 172
 173 const char *pa_namereg_get_default_sink_name(pa_core *c) {
 174     pa_sink *s;
 175     assert(c);
 176
 177     if (c->default_sink_name)
 178         return c->default_sink_name;
 179
 180     if ((s = pa_idxset_first(c->sinks, NULL)))
 181         pa_namereg_set_default(c, s->name, PA_NAMEREG_SINK);
 182
 183     if (c->default_sink_name)
 184         return c->default_sink_name;
 185
 186     return NULL;
 187 }
 188
 189 const char *pa_namereg_get_default_source_name(pa_core *c) {
 190     pa_source *s;
 191     uint32_t idx;
 192
 193     assert(c);
 194
 195     if (c->default_source_name)
 196         return c->default_source_name;
 197
 198     for (s = pa_idxset_first(c->sources, &idx); s; s = pa_idxset_next(c->sources, &idx))
 199         if (!s->monitor_of) {
 200             pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
 201             break;
 202         }
 203
 204     if (!c->default_source_name)
 205         if ((s = pa_idxset_first(c->sources, NULL)))
 206             pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
 207
 208     if (c->default_source_name)
 209         return c->default_source_name;
 210
 211     return NULL;
 212 }