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             name = pa_namereg_get_default_source_name(c);
 127         else if (type == PA_NAMEREG_SINK)
 128             name = pa_namereg_get_default_sink_name(c);
 129     }
 130
 131     if (!name)
 132         return NULL;
 133
 134     if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
 135         if (e->type == e->type)
 136             return e->data;
 137
 138     index = (uint32_t) strtol(name, &x, 0);
 139
 140     if (!x || *x != 0) {
 141
 142         if (autoload) {
 143             pa_autoload_request(c, name, type);
 144
 145             if (c->namereg && (e = pa_hashmap_get(c->namereg, name)))
 146                 if (e->type == e->type)
 147                     return e->data;
 148         }
 149
 150         return NULL;
 151     }
 152
 153     if (type == PA_NAMEREG_SINK)
 154         d = pa_idxset_get_by_index(c->sinks, index);
 155     else if (type == PA_NAMEREG_SOURCE)
 156         d = pa_idxset_get_by_index(c->sources, index);
 157     else if (type == PA_NAMEREG_SAMPLE && c->scache)
 158         d = pa_idxset_get_by_index(c->scache, index);
 159
 160     return d;
 161 }
 162
 163 void pa_namereg_set_default(struct pa_core*c, const char *name, enum pa_namereg_type type) {
 164     char **s;
 165     assert(c && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
 166
 167     s = type == PA_NAMEREG_SINK ? &c->default_sink_name : &c->default_source_name;
 168     assert(s);
 169
 170     if (!name && !*s)
 171         return;
 172
 173     if (name && *s && !strcmp(name, *s))
 174         return;
 175
 176     pa_xfree(*s);
 177     *s = pa_xstrdup(name);
 178     pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_SERVER|PA_SUBSCRIPTION_EVENT_CHANGE, PA_INVALID_INDEX);
 179 }
 180
 181 const char *pa_namereg_get_default_sink_name(struct pa_core *c) {
 182     struct pa_sink *s;
 183     assert(c);
 184
 185     if (c->default_sink_name)
 186         return c->default_sink_name;
 187
 188     if ((s = pa_idxset_first(c->sinks, NULL)))
 189         pa_namereg_set_default(c, s->name, PA_NAMEREG_SINK);
 190
 191     if (c->default_sink_name)
 192         return c->default_sink_name;
 193
 194     return NULL;
 195 }
 196
 197 const char *pa_namereg_get_default_source_name(struct pa_core *c) {
 198     struct pa_source *s;
 199     uint32_t index;
 200
 201     assert(c);
 202
 203     if (c->default_source_name)
 204         return c->default_source_name;
 205
 206     for (s = pa_idxset_first(c->sources, &index); s; s = pa_idxset_next(c->sources, &index))
 207         if (!s->monitor_of) {
 208             pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
 209             break;
 210         }
 211
 212     if (!c->default_source_name)
 213         if ((s = pa_idxset_first(c->sources, NULL)))
 214             pa_namereg_set_default(c, s->name, PA_NAMEREG_SOURCE);
 215
 216     if (c->default_source_name)
 217         return c->default_source_name;
 218
 219     return NULL;
 220 }