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 2.1 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 #include <pulse/util.h>
  32
  33 #include <pulsecore/log.h>
  34 #include <pulsecore/macro.h>
  35 #include <pulsecore/core-util.h>
  36 #include <pulsecore/namereg.h>
  37
  38 #include "card.h"
  39
  40 pa_card_profile *pa_card_profile_new(const char *name, const char *description, size_t extra) {
  41     pa_card_profile *c;
  42
  43     pa_assert(name);
  44
  45     c = pa_xmalloc(PA_ALIGN(sizeof(pa_card_profile)) + extra);
  46     c->name = pa_xstrdup(name);
  47     c->description = pa_xstrdup(description);
  48
  49     c->priority = 0;
  50     c->n_sinks = c->n_sources = 0;
  51     c->max_sink_channels = c->max_source_channels = 0;
  52
  53     return c;
  54 }
  55
  56 void pa_card_profile_free(pa_card_profile *c) {
  57     pa_assert(c);
  58
  59     pa_xfree(c->name);
  60     pa_xfree(c->description);
  61     pa_xfree(c);
  62 }
  63
  64 pa_card_new_data* pa_card_new_data_init(pa_card_new_data *data) {
  65     pa_assert(data);
  66
  67     memset(data, 0, sizeof(*data));
  68     data->proplist = pa_proplist_new();
  69
  70     return data;
  71 }
  72
  73 void pa_card_new_data_set_name(pa_card_new_data *data, const char *name) {
  74     pa_assert(data);
  75
  76     pa_xfree(data->name);
  77     data->name = pa_xstrdup(name);
  78 }
  79
  80 void pa_card_new_data_set_profile(pa_card_new_data *data, const char *profile) {
  81     pa_assert(data);
  82
  83     pa_xfree(data->active_profile);
  84     data->active_profile = pa_xstrdup(profile);
  85 }
  86
  87 void pa_card_new_data_done(pa_card_new_data *data) {
  88
  89     pa_assert(data);
  90
  91     pa_proplist_free(data->proplist);
  92
  93     if (data->profiles) {
  94         pa_card_profile *c;
  95
  96         while ((c = pa_hashmap_steal_first(data->profiles)))
  97             pa_card_profile_free(c);
  98
  99         pa_hashmap_free(data->profiles, NULL, NULL);
 100     }
 101
 102     pa_xfree(data->name);
 103     pa_xfree(data->active_profile);
 104 }
 105
 106 pa_card *pa_card_new(pa_core *core, pa_card_new_data *data) {
 107     pa_card *c;
 108     const char *name;
 109
 110     pa_core_assert_ref(core);
 111     pa_assert(data);
 112     pa_assert(data->name);
 113
 114     c = pa_xnew(pa_card, 1);
 115
 116     if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_CARD, c, data->namereg_fail))) {
 117         pa_xfree(c);
 118         return NULL;
 119     }
 120
 121     pa_card_new_data_set_name(data, name);
 122
 123     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_NEW], data) < 0) {
 124         pa_xfree(c);
 125         pa_namereg_unregister(core, name);
 126         return NULL;
 127     }
 128
 129     c->core = core;
 130     c->name = pa_xstrdup(data->name);
 131     c->proplist = pa_proplist_copy(data->proplist);
 132     c->driver = pa_xstrdup(pa_path_get_filename(data->driver));
 133     c->module = data->module;
 134
 135     c->sinks = pa_idxset_new(NULL, NULL);
 136     c->sources = pa_idxset_new(NULL, NULL);
 137
 138     /* As a minor optimization we just steal the list instead of
 139      * copying it here */
 140     c->profiles = data->profiles;
 141     data->profiles = NULL;
 142
 143     c->active_profile = NULL;
 144     c->save_profile = FALSE;
 145
 146     if (data->active_profile && c->profiles)
 147         if ((c->active_profile = pa_hashmap_get(c->profiles, data->active_profile)))
 148             c->save_profile = data->save_profile;
 149
 150     if (!c->active_profile && c->profiles) {
 151         void *state;
 152         pa_card_profile *p;
 153
 154         PA_HASHMAP_FOREACH(p, c->profiles, state)
 155             if (!c->active_profile || p->priority > c->active_profile->priority)
 156                 c->active_profile = p;
 157     }
 158
 159     c->userdata = NULL;
 160     c->set_profile = NULL;
 161
 162     pa_device_init_description(c->proplist);
 163     pa_device_init_icon(c->proplist, TRUE);
 164     pa_device_init_intended_roles(c->proplist);
 165
 166     pa_assert_se(pa_idxset_put(core->cards, c, &c->index) >= 0);
 167
 168     pa_log_info("Created %u \"%s\"", c->index, c->name);
 169     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_NEW, c->index);
 170
 171     pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_PUT], c);
 172     return c;
 173 }
 174
 175 void pa_card_free(pa_card *c) {
 176     pa_core *core;
 177
 178     pa_assert(c);
 179     pa_assert(c->core);
 180
 181     core = c->core;
 182
 183     pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_UNLINK], c);
 184
 185     pa_namereg_unregister(core, c->name);
 186
 187     pa_idxset_remove_by_data(c->core->cards, c, NULL);
 188
 189     pa_log_info("Freed %u \"%s\"", c->index, c->name);
 190
 191     pa_subscription_post(c->core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_REMOVE, c->index);
 192
 193     pa_assert(pa_idxset_isempty(c->sinks));
 194     pa_idxset_free(c->sinks, NULL, NULL);
 195     pa_assert(pa_idxset_isempty(c->sources));
 196     pa_idxset_free(c->sources, NULL, NULL);
 197
 198     if (c->profiles) {
 199         pa_card_profile *p;
 200
 201         while ((p = pa_hashmap_steal_first(c->profiles)))
 202             pa_card_profile_free(p);
 203
 204         pa_hashmap_free(c->profiles, NULL, NULL);
 205     }
 206
 207     pa_proplist_free(c->proplist);
 208     pa_xfree(c->driver);
 209     pa_xfree(c->name);
 210     pa_xfree(c);
 211 }
 212
 213 int pa_card_set_profile(pa_card *c, const char *name, pa_bool_t save) {
 214     pa_card_profile *profile;
 215     int r;
 216     pa_assert(c);
 217
 218     if (!c->set_profile) {
 219         pa_log_debug("set_profile() operation not implemented for card %u \"%s\"", c->index, c->name);
 220         return -PA_ERR_NOTIMPLEMENTED;
 221     }
 222
 223     if (!c->profiles)
 224         return -PA_ERR_NOENTITY;
 225
 226     if (!(profile = pa_hashmap_get(c->profiles, name)))
 227         return -PA_ERR_NOENTITY;
 228
 229     if (c->active_profile == profile) {
 230         c->save_profile = c->save_profile || save;
 231         return 0;
 232     }
 233
 234     if ((r = c->set_profile(c, profile)) < 0)
 235         return r;
 236
 237     pa_subscription_post(c->core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_CHANGE, c->index);
 238
 239     pa_log_info("Changed profile of card %u \"%s\" to %s", c->index, c->name, profile->name);
 240
 241     c->active_profile = profile;
 242     c->save_profile = save;
 243
 244     return 0;
 245 }
 246
 247 int pa_card_suspend(pa_card *c, pa_bool_t suspend, pa_suspend_cause_t cause) {
 248     pa_sink *sink;
 249     pa_source *source;
 250     uint32_t idx;
 251     int ret = 0;
 252
 253     pa_assert(c);
 254     pa_assert(cause != 0);
 255
 256     for (sink = pa_idxset_first(c->sinks, &idx); sink; sink = pa_idxset_next(c->sinks, &idx)) {
 257         int r;
 258
 259         if ((r = pa_sink_suspend(sink, suspend, cause)) < 0)
 260             ret = r;
 261     }
 262
 263     for (source = pa_idxset_first(c->sources, &idx); source; source = pa_idxset_next(c->sources, &idx)) {
 264         int r;
 265
 266         if ((r = pa_source_suspend(source, suspend, cause)) < 0)
 267             ret = r;
 268     }
 269
 270     return ret;
 271 }