code.delx.au - pulseaudio/blob - src/pulsecore/card.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2009 Lennart Poettering
   5
   6   PulseAudio 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   PulseAudio 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 PulseAudio; 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 <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include <pulse/xmalloc.h>
  31
  32 #include <pulsecore/log.h>
  33 #include <pulsecore/macro.h>
  34 #include <pulsecore/core-util.h>
  35 #include <pulsecore/namereg.h>
  36
  37 #include "card.h"
  38
  39 pa_card_profile *pa_card_profile_new(const char *name, const char *description, size_t extra) {
  40     pa_card_profile *c;
  41
  42     pa_assert(name);
  43
  44     c = pa_xmalloc(PA_ALIGN(sizeof(pa_card_profile)) + extra);
  45     c->name = pa_xstrdup(name);
  46     c->description = pa_xstrdup(description);
  47
  48     c->priority = 0;
  49     c->n_sinks = c->n_sources = 0;
  50     c->max_sink_channels = c->max_source_channels = 0;
  51
  52     return c;
  53 }
  54
  55 void pa_card_profile_free(pa_card_profile *c) {
  56     pa_assert(c);
  57
  58     pa_xfree(c->name);
  59     pa_xfree(c->description);
  60     pa_xfree(c);
  61 }
  62
  63 pa_card_new_data* pa_card_new_data_init(pa_card_new_data *data) {
  64     pa_assert(data);
  65
  66     memset(data, 0, sizeof(*data));
  67     data->proplist = pa_proplist_new();
  68
  69     return data;
  70 }
  71
  72 void pa_card_new_data_set_name(pa_card_new_data *data, const char *name) {
  73     pa_assert(data);
  74
  75     pa_xfree(data->name);
  76     data->name = pa_xstrdup(name);
  77 }
  78
  79 void pa_card_new_data_set_profile(pa_card_new_data *data, const char *profile) {
  80     pa_assert(data);
  81
  82     pa_xfree(data->active_profile);
  83     data->active_profile = pa_xstrdup(profile);
  84 }
  85
  86 void pa_card_new_data_done(pa_card_new_data *data) {
  87
  88     pa_assert(data);
  89
  90     pa_proplist_free(data->proplist);
  91
  92     if (data->profiles) {
  93         pa_card_profile *c;
  94
  95         while ((c = pa_hashmap_steal_first(data->profiles)))
  96             pa_card_profile_free(c);
  97
  98         pa_hashmap_free(data->profiles, NULL, NULL);
  99     }
 100
 101     pa_xfree(data->name);
 102     pa_xfree(data->active_profile);
 103 }
 104
 105 pa_card *pa_card_new(pa_core *core, pa_card_new_data *data) {
 106     pa_card *c;
 107     const char *name;
 108
 109     pa_core_assert_ref(core);
 110     pa_assert(data);
 111     pa_assert(data->name);
 112
 113     c = pa_xnew(pa_card, 1);
 114
 115     if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_CARD, c, data->namereg_fail))) {
 116         pa_xfree(c);
 117         return NULL;
 118     }
 119
 120     pa_card_new_data_set_name(data, name);
 121
 122     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_NEW], data) < 0) {
 123         pa_xfree(c);
 124         pa_namereg_unregister(core, name);
 125         return NULL;
 126     }
 127
 128     c->core = core;
 129     c->name = pa_xstrdup(data->name);
 130     c->proplist = pa_proplist_copy(data->proplist);
 131     c->driver = pa_xstrdup(data->driver);
 132     c->module = data->module;
 133
 134     c->sinks = pa_idxset_new(NULL, NULL);
 135     c->sources = pa_idxset_new(NULL, NULL);
 136
 137     /* As a minor optimization we just steal the list instead of
 138      * copying it here */
 139     c->profiles = data->profiles;
 140     data->profiles = NULL;
 141
 142     c->active_profile = NULL;
 143
 144     if (data->active_profile && c->profiles)
 145         c->active_profile = pa_hashmap_get(c->profiles, data->active_profile);
 146
 147     if (!c->active_profile && c->profiles) {
 148         void *state = NULL;
 149         pa_card_profile *p;
 150
 151         while ((p = pa_hashmap_iterate(c->profiles, &state, NULL))) {
 152             if (!c->active_profile ||
 153                 p->priority > c->active_profile->priority)
 154
 155                 c->active_profile = p;
 156         }
 157     }
 158
 159     c->userdata = NULL;
 160     c->set_profile = NULL;
 161
 162     pa_assert_se(pa_idxset_put(core->cards, c, &c->index) >= 0);
 163
 164     pa_log_info("Created %u \"%s\"", c->index, c->name);
 165     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_NEW, c->index);
 166
 167     pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_PUT], c);
 168     return c;
 169 }
 170
 171 void pa_card_free(pa_card *c) {
 172     pa_core *core;
 173     pa_card_profile *profile;
 174
 175     pa_assert(c);
 176     pa_assert(c->core);
 177
 178     core = c->core;
 179
 180     pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_UNLINK], c);
 181
 182     pa_namereg_unregister(core, c->name);
 183
 184     pa_idxset_remove_by_data(c->core->cards, c, NULL);
 185
 186     pa_log_info("Freed %u \"%s\"", c->index, c->name);
 187
 188     pa_subscription_post(c->core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_REMOVE, c->index);
 189
 190     pa_assert(pa_idxset_isempty(c->sinks));
 191     pa_idxset_free(c->sinks, NULL, NULL);
 192     pa_assert(pa_idxset_isempty(c->sources));
 193     pa_idxset_free(c->sources, NULL, NULL);
 194
 195     if (c->profiles) {
 196         while ((profile = pa_hashmap_steal_first(c->profiles)))
 197             pa_card_profile_free(profile);
 198
 199         pa_hashmap_free(c->profiles, NULL, NULL);
 200     }
 201
 202     pa_proplist_free(c->proplist);
 203     pa_xfree(c->driver);
 204     pa_xfree(c->name);
 205     pa_xfree(c);
 206 }
 207
 208 int pa_card_set_profile(pa_card *c, const char *name) {
 209     pa_card_profile *profile;
 210     pa_assert(c);
 211
 212     if (!c->set_profile) {
 213         pa_log_warn("set_profile() operation not implemented for card %u \"%s\"", c->index, c->name);
 214         return -1;
 215     }
 216
 217     if (!c->profiles)
 218         return -1;
 219
 220     if (!(profile = pa_hashmap_get(c->profiles, name)))
 221         return -1;
 222
 223     if (c->active_profile == profile)
 224         return 0;
 225
 226     if (c->set_profile(c, profile) < 0)
 227         return -1;
 228
 229     pa_subscription_post(c->core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_CHANGE, c->index);
 230
 231     pa_log_info("Successfully changed profile of card %u \"%s\" to %s", c->index, c->name, profile->name);
 232
 233     c->active_profile = profile;
 234
 235     return 0;
 236 }