code.delx.au - pulseaudio/blob - src/polypcore/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 <polyp/xmalloc.h>
  33
  34 #include <polypcore/autoload.h>
  35 #include <polypcore/source.h>
  36 #include <polypcore/sink.h>
  37 #include <polypcore/core-subscribe.h>
  38 #include <polypcore/core-util.h>
  39
  40 #include "namereg.h"
  41
  42 struct namereg_entry {
  43     pa_namereg_type_t type;
  44     char *name;
  45     void *data;
  46 };
  47
  48 void pa_namereg_free(pa_core *c) {
  49     assert(c);
  50     if (!c->namereg)
  51         return;
  52     assert(pa_hashmap_size(c->namereg) == 0);
  53     pa_hashmap_free(c->namereg, NULL, NULL);
  54 }
  55
  56 const char *pa_namereg_register(pa_core *c, const char *name, pa_namereg_type_t type, void *data, int fail) {
  57     struct namereg_entry *e;
  58     char *n = NULL;
  59     int r;
  60
  61     assert(c && name && data);
  62
  63     if (!c->namereg) {
  64         c->namereg = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
  65         assert(c->namereg);
  66     }
  67
  68     if ((e = pa_hashmap_get(c->namereg, name)) && fail)
  69         return NULL;
  70
  71     if (!e)
  72         n = pa_xstrdup(name);
  73     else {
  74         unsigned i;
  75         size_t l = strlen(name);
  76         n = pa_xmalloc(l+3);
  77
  78         for (i = 1; i <= 99; i++) {
  79             snprintf(n, l+2, "%s%u", name, i);
  80
  81             if (!(e = pa_hashmap_get(c->namereg, n)))
  82                 break;
  83         }
  84
  85         if (e) {
  86             pa_xfree(n);
  87             return NULL;
  88         }
  89     }
  90
  91     assert(n);
  92     e = pa_xmalloc(sizeof(struct namereg_entry));
  93     e->type = type;
  94     e->name = n;
  95     e->data = data;
  96
  97     r = pa_hashmap_put(c->namereg, e->name, e);
  98     assert (r >= 0);
  99
 100     return e->name;
 101
 102 }
 103
 104 void pa_namereg_unregister(pa_core *c, const char *name) {
 105     struct namereg_entry *e;
 106     assert(c && name);
 107
 108     e = pa_hashmap_remove(c->namereg, name);
 109     assert(e);
 110
 111     pa_xfree(e->name);
 112     pa_xfree(e);
 113 }
 114
 115 void* pa_namereg_get(pa_core *c, const char *name, pa_namereg_type_t type, int autoload) {
 116     struct namereg_entry *e;
 117     uint32_t idx;
 118     assert(c);
 119
 120     if (!name) {
 121         if (type == PA_NAMEREG_SOURCE)
 122             name = pa_namereg_get_default_source_name(c);
 123         else if (type == PA_NAMEREG_SINK)
 124             name = pa_namereg_get_default_sink_name(c);
 125     }
 126
 127     if (!name)
 128         return NULL;
 129
 130     if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
 131         if (e->type == type)
 132             return e->data;
 133
 134     if (pa_atou(name, &idx) < 0) {
 135
 136         if (autoload) {
 137             pa_autoload_request(c, name, type);
 138
 139             if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
 140                 if (e->type == type)
 141                     return e->data;
 142         }
 143
 144         return NULL;
 145     }
 146
 147     if (type == PA_NAMEREG_SINK)
 148         return pa_idxset_get_by_index(c->sinks, idx);
 149     else if (type == PA_NAMEREG_SOURCE)
 150         return pa_idxset_get_by_index(c->sources, idx);
 151     else if (type == PA_NAMEREG_SAMPLE && c->scache)
 152         return pa_idxset_get_by_index(c->scache, idx);
 153
 154     return NULL;
 155 }
 156
 157 void pa_namereg_set_default(pa_core*c, const char *name, pa_namereg_type_t type) {
 158     char **s;
 159     assert(c && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
 160
 161     s = type == PA_NAMEREG_SINK ? &c->default_sink_name : &c->default_source_name;
 162     assert(s);
 163
 164     if (!name && !*s)
 165         return;
 166
 167     if (name && *s && !strcmp(name, *s))
 168         return;
 169
 170     pa_xfree(*s);
 171     *s = pa_xstrdup(name);
 172     pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
 173 }
 174
 175 const char *pa_namereg_get_default_sink_name(pa_core *c) {
 176     pa_sink *s;
 177     assert(c);
 178
 179     if (c->default_sink_name)
 180         return c->default_sink_name;
 181
 182     if ((s = pa_idxset_first(c->sinks, NULL)))
 183         pa_namereg_set_default(c, s->name, PA_NAMEREG_SINK);
 184
 185     if (c->default_sink_name)
 186         return c->default_sink_name;
 187
 188     return NULL;
 189 }
 190
 191 const char *pa_namereg_get_default_source_name(pa_core *c) {
 192     pa_source *s;
 193     uint32_t idx;
 194
 195     assert(c);
 196
 197     if (c->default_source_name)
 198         return c->default_source_name;
 199
 200     for (s = pa_idxset_first(c->sources, &idx); s; s = pa_idxset_next(c->sources, &idx))
 201         if (!s->monitor_of) {
 202             pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
 203             break;
 204         }
 205
 206     if (!c->default_source_name)
 207         if ((s = pa_idxset_first(c->sources, NULL)))
 208             pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
 209
 210     if (c->default_source_name)
 211         return c->default_source_name;
 212
 213     return NULL;
 214 }