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 2.1 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 #include <pulsecore/device-port.h>
  38
  39 #include "card.h"
  40
  41 pa_card_profile *pa_card_profile_new(const char *name, const char *description, size_t extra) {
  42     pa_card_profile *c;
  43
  44     pa_assert(name);
  45
  46     c = pa_xmalloc(PA_ALIGN(sizeof(pa_card_profile)) + extra);
  47     c->card = NULL;
  48     c->name = pa_xstrdup(name);
  49     c->description = pa_xstrdup(description);
  50
  51     c->priority = 0;
  52     c->n_sinks = c->n_sources = 0;
  53     c->max_sink_channels = c->max_source_channels = 0;
  54     c->available = PA_AVAILABLE_UNKNOWN;
  55
  56     return c;
  57 }
  58
  59 void pa_card_profile_free(pa_card_profile *c) {
  60     pa_assert(c);
  61
  62     pa_xfree(c->name);
  63     pa_xfree(c->description);
  64     pa_xfree(c);
  65 }
  66
  67 void pa_card_profile_set_available(pa_card_profile *c, pa_available_t available) {
  68     pa_core *core;
  69
  70     pa_assert(c);
  71     pa_assert(c->card); /* Modify member variable directly during creation instead of using this function */
  72
  73     if (c->available == available)
  74         return;
  75
  76     c->available = available;
  77     pa_log_debug("Setting card %s profile %s to availability status %s", c->card->name, c->name,
  78                  available == PA_AVAILABLE_YES ? "yes" : available == PA_AVAILABLE_NO ? "no" : "unknown");
  79
  80     /* Post subscriptions to the card which owns us */
  81     pa_assert_se(core = c->card->core);
  82     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_CHANGE, c->card->index);
  83
  84     pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_PROFILE_AVAILABLE_CHANGED], c);
  85 }
  86
  87 pa_card_new_data* pa_card_new_data_init(pa_card_new_data *data) {
  88     pa_assert(data);
  89
  90     memset(data, 0, sizeof(*data));
  91     data->proplist = pa_proplist_new();
  92     data->profiles = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) pa_card_profile_free);
  93     data->ports = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) pa_device_port_unref);
  94     return data;
  95 }
  96
  97 void pa_card_new_data_set_name(pa_card_new_data *data, const char *name) {
  98     pa_assert(data);
  99
 100     pa_xfree(data->name);
 101     data->name = pa_xstrdup(name);
 102 }
 103
 104 void pa_card_add_profile(pa_card *c, pa_card_profile *profile) {
 105     pa_assert(c);
 106     pa_assert(profile);
 107
 108     /* take ownership of the profile */
 109     pa_assert_se(pa_hashmap_put(c->profiles, profile->name, profile) >= 0);
 110     profile->card = c;
 111
 112     pa_subscription_post(c->core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_CHANGE, c->index);
 113
 114     pa_hook_fire(&c->core->hooks[PA_CORE_HOOK_CARD_PROFILE_ADDED], profile);
 115 }
 116
 117 void pa_card_new_data_set_profile(pa_card_new_data *data, const char *profile) {
 118     pa_assert(data);
 119
 120     pa_xfree(data->active_profile);
 121     data->active_profile = pa_xstrdup(profile);
 122 }
 123
 124 void pa_card_new_data_done(pa_card_new_data *data) {
 125
 126     pa_assert(data);
 127
 128     pa_proplist_free(data->proplist);
 129
 130     if (data->profiles)
 131         pa_hashmap_free(data->profiles);
 132
 133     if (data->ports)
 134         pa_hashmap_free(data->ports);
 135
 136     pa_xfree(data->name);
 137     pa_xfree(data->active_profile);
 138 }
 139
 140 pa_card *pa_card_new(pa_core *core, pa_card_new_data *data) {
 141     pa_card *c;
 142     const char *name;
 143     void *state;
 144     pa_card_profile *profile;
 145     pa_device_port *port;
 146
 147     pa_core_assert_ref(core);
 148     pa_assert(data);
 149     pa_assert(data->name);
 150     pa_assert(data->profiles);
 151     pa_assert(!pa_hashmap_isempty(data->profiles));
 152
 153     c = pa_xnew(pa_card, 1);
 154
 155     if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_CARD, c, data->namereg_fail))) {
 156         pa_xfree(c);
 157         return NULL;
 158     }
 159
 160     pa_card_new_data_set_name(data, name);
 161
 162     if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_NEW], data) < 0) {
 163         pa_xfree(c);
 164         pa_namereg_unregister(core, name);
 165         return NULL;
 166     }
 167
 168     c->core = core;
 169     c->name = pa_xstrdup(data->name);
 170     c->proplist = pa_proplist_copy(data->proplist);
 171     c->driver = pa_xstrdup(pa_path_get_filename(data->driver));
 172     c->module = data->module;
 173
 174     c->sinks = pa_idxset_new(NULL, NULL);
 175     c->sources = pa_idxset_new(NULL, NULL);
 176
 177     /* As a minor optimization we just steal the list instead of
 178      * copying it here */
 179     pa_assert_se(c->profiles = data->profiles);
 180     data->profiles = NULL;
 181     pa_assert_se(c->ports = data->ports);
 182     data->ports = NULL;
 183
 184     PA_HASHMAP_FOREACH(profile, c->profiles, state)
 185         profile->card = c;
 186
 187     PA_HASHMAP_FOREACH(port, c->ports, state)
 188         port->card = c;
 189
 190     c->active_profile = NULL;
 191     c->save_profile = false;
 192
 193     if (data->active_profile)
 194         if ((c->active_profile = pa_hashmap_get(c->profiles, data->active_profile)))
 195             c->save_profile = data->save_profile;
 196
 197     if (!c->active_profile) {
 198         PA_HASHMAP_FOREACH(profile, c->profiles, state) {
 199             if (profile->available == PA_AVAILABLE_NO)
 200                 continue;
 201
 202             if (!c->active_profile || profile->priority > c->active_profile->priority)
 203                 c->active_profile = profile;
 204         }
 205         /* If all profiles are not available, then we still need to pick one */
 206         if (!c->active_profile) {
 207             PA_HASHMAP_FOREACH(profile, c->profiles, state)
 208                 if (!c->active_profile || profile->priority > c->active_profile->priority)
 209                     c->active_profile = profile;
 210         }
 211         pa_assert(c->active_profile);
 212     }
 213
 214     c->userdata = NULL;
 215     c->set_profile = NULL;
 216
 217     pa_device_init_description(c->proplist);
 218     pa_device_init_icon(c->proplist, true);
 219     pa_device_init_intended_roles(c->proplist);
 220
 221     pa_assert_se(pa_idxset_put(core->cards, c, &c->index) >= 0);
 222
 223     pa_log_info("Created %u \"%s\"", c->index, c->name);
 224     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_NEW, c->index);
 225
 226     pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_PUT], c);
 227     return c;
 228 }
 229
 230 void pa_card_free(pa_card *c) {
 231     pa_core *core;
 232
 233     pa_assert(c);
 234     pa_assert(c->core);
 235
 236     core = c->core;
 237
 238     pa_hook_fire(&core->hooks[PA_CORE_HOOK_CARD_UNLINK], c);
 239
 240     pa_namereg_unregister(core, c->name);
 241
 242     pa_idxset_remove_by_data(c->core->cards, c, NULL);
 243
 244     pa_log_info("Freed %u \"%s\"", c->index, c->name);
 245
 246     pa_subscription_post(c->core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_REMOVE, c->index);
 247
 248     pa_assert(pa_idxset_isempty(c->sinks));
 249     pa_idxset_free(c->sinks, NULL);
 250     pa_assert(pa_idxset_isempty(c->sources));
 251     pa_idxset_free(c->sources, NULL);
 252
 253     pa_hashmap_free(c->ports);
 254
 255     if (c->profiles)
 256         pa_hashmap_free(c->profiles);
 257
 258     pa_proplist_free(c->proplist);
 259     pa_xfree(c->driver);
 260     pa_xfree(c->name);
 261     pa_xfree(c);
 262 }
 263
 264 int pa_card_set_profile(pa_card *c, const char *name, bool save) {
 265     pa_card_profile *profile;
 266     int r;
 267
 268     pa_assert(c);
 269
 270     if (!c->set_profile) {
 271         pa_log_debug("set_profile() operation not implemented for card %u \"%s\"", c->index, c->name);
 272         return -PA_ERR_NOTIMPLEMENTED;
 273     }
 274
 275     if (!name)
 276         return -PA_ERR_NOENTITY;
 277
 278     if (!(profile = pa_hashmap_get(c->profiles, name)))
 279         return -PA_ERR_NOENTITY;
 280
 281     if (c->active_profile == profile) {
 282         c->save_profile = c->save_profile || save;
 283         return 0;
 284     }
 285
 286     if ((r = c->set_profile(c, profile)) < 0)
 287         return r;
 288
 289     pa_subscription_post(c->core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_CHANGE, c->index);
 290
 291     pa_log_info("Changed profile of card %u \"%s\" to %s", c->index, c->name, profile->name);
 292
 293     c->active_profile = profile;
 294     c->save_profile = save;
 295
 296     pa_hook_fire(&c->core->hooks[PA_CORE_HOOK_CARD_PROFILE_CHANGED], c);
 297
 298     return 0;
 299 }
 300
 301 int pa_card_suspend(pa_card *c, bool suspend, pa_suspend_cause_t cause) {
 302     pa_sink *sink;
 303     pa_source *source;
 304     uint32_t idx;
 305     int ret = 0;
 306
 307     pa_assert(c);
 308     pa_assert(cause != 0);
 309
 310     PA_IDXSET_FOREACH(sink, c->sinks, idx) {
 311         int r;
 312
 313         if ((r = pa_sink_suspend(sink, suspend, cause)) < 0)
 314             ret = r;
 315     }
 316
 317     PA_IDXSET_FOREACH(source, c->sources, idx) {
 318         int r;
 319
 320         if ((r = pa_source_suspend(source, suspend, cause)) < 0)
 321             ret = r;
 322     }
 323
 324     return ret;
 325 }