code.delx.au - pulseaudio/blob - src/modules/alsa/module-alsa-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 <pulse/xmalloc.h>
  27 #include <pulse/i18n.h>
  28
  29 #include <pulsecore/core-util.h>
  30 #include <pulsecore/modargs.h>
  31 #include <pulsecore/queue.h>
  32
  33 #include <modules/reserve-wrap.h>
  34
  35 #ifdef HAVE_UDEV
  36 #include <modules/udev-util.h>
  37 #endif
  38
  39 #include "alsa-util.h"
  40 #include "alsa-sink.h"
  41 #include "alsa-source.h"
  42 #include "module-alsa-card-symdef.h"
  43
  44 PA_MODULE_AUTHOR("Lennart Poettering");
  45 PA_MODULE_DESCRIPTION("ALSA Card");
  46 PA_MODULE_VERSION(PACKAGE_VERSION);
  47 PA_MODULE_LOAD_ONCE(FALSE);
  48 PA_MODULE_USAGE(
  49         "name=<name for the card/sink/source, to be prefixed> "
  50         "card_name=<name for the card> "
  51         "card_properties=<properties for the card> "
  52         "sink_name=<name for the sink> "
  53         "sink_properties=<properties for the sink> "
  54         "source_name=<name for the source> "
  55         "source_properties=<properties for the source> "
  56         "namereg_fail=<pa_namereg_register() fail parameter value> "
  57         "device_id=<ALSA card index> "
  58         "format=<sample format> "
  59         "rate=<sample rate> "
  60         "fragments=<number of fragments> "
  61         "fragment_size=<fragment size> "
  62         "mmap=<enable memory mapping?> "
  63         "tsched=<enable system timer based scheduling mode?> "
  64         "tsched_buffer_size=<buffer size when using timer based scheduling> "
  65         "tsched_buffer_watermark=<lower fill watermark> "
  66         "profile=<profile name> "
  67         "ignore_dB=<ignore dB information from the device?> "
  68         "sync_volume=<syncronize sw and hw voluchanges in IO-thread?>");
  69
  70 static const char* const valid_modargs[] = {
  71     "name",
  72     "card_name",
  73     "card_properties",
  74     "sink_name",
  75     "sink_properties",
  76     "source_name",
  77     "source_properties",
  78     "namereg_fail",
  79     "device_id",
  80     "format",
  81     "rate",
  82     "fragments",
  83     "fragment_size",
  84     "mmap",
  85     "tsched",
  86     "tsched_buffer_size",
  87     "tsched_buffer_watermark",
  88     "profile",
  89     "ignore_dB",
  90     "sync_volume",
  91     NULL
  92 };
  93
  94 #define DEFAULT_DEVICE_ID "0"
  95
  96 struct userdata {
  97     pa_core *core;
  98     pa_module *module;
  99
 100     char *device_id;
 101
 102     pa_card *card;
 103
 104     pa_modargs *modargs;
 105
 106     pa_alsa_profile_set *profile_set;
 107 };
 108
 109 struct profile_data {
 110     pa_alsa_profile *profile;
 111 };
 112
 113 static void add_profiles(struct userdata *u, pa_hashmap *h) {
 114     pa_alsa_profile *ap;
 115     void *state;
 116
 117     pa_assert(u);
 118     pa_assert(h);
 119
 120     PA_HASHMAP_FOREACH(ap, u->profile_set->profiles, state) {
 121         struct profile_data *d;
 122         pa_card_profile *cp;
 123         pa_alsa_mapping *m;
 124         uint32_t idx;
 125
 126         cp = pa_card_profile_new(ap->name, ap->description, sizeof(struct profile_data));
 127         cp->priority = ap->priority;
 128
 129         if (ap->output_mappings) {
 130             cp->n_sinks = pa_idxset_size(ap->output_mappings);
 131
 132             PA_IDXSET_FOREACH(m, ap->output_mappings, idx)
 133                 if (m->channel_map.channels > cp->max_sink_channels)
 134                     cp->max_sink_channels = m->channel_map.channels;
 135         }
 136
 137         if (ap->input_mappings) {
 138             cp->n_sources = pa_idxset_size(ap->input_mappings);
 139
 140             PA_IDXSET_FOREACH(m, ap->input_mappings, idx)
 141                 if (m->channel_map.channels > cp->max_source_channels)
 142                     cp->max_source_channels = m->channel_map.channels;
 143         }
 144
 145         d = PA_CARD_PROFILE_DATA(cp);
 146         d->profile = ap;
 147
 148         pa_hashmap_put(h, cp->name, cp);
 149     }
 150 }
 151
 152 static void add_disabled_profile(pa_hashmap *profiles) {
 153     pa_card_profile *p;
 154     struct profile_data *d;
 155
 156     p = pa_card_profile_new("off", _("Off"), sizeof(struct profile_data));
 157
 158     d = PA_CARD_PROFILE_DATA(p);
 159     d->profile = NULL;
 160
 161     pa_hashmap_put(profiles, p->name, p);
 162 }
 163
 164 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
 165     struct userdata *u;
 166     struct profile_data *nd, *od;
 167     uint32_t idx;
 168     pa_alsa_mapping *am;
 169     pa_queue *sink_inputs = NULL, *source_outputs = NULL;
 170
 171     pa_assert(c);
 172     pa_assert(new_profile);
 173     pa_assert_se(u = c->userdata);
 174
 175     nd = PA_CARD_PROFILE_DATA(new_profile);
 176     od = PA_CARD_PROFILE_DATA(c->active_profile);
 177
 178     if (od->profile && od->profile->output_mappings)
 179         PA_IDXSET_FOREACH(am, od->profile->output_mappings, idx) {
 180             if (!am->sink)
 181                 continue;
 182
 183             if (nd->profile &&
 184                 nd->profile->output_mappings &&
 185                 pa_idxset_get_by_data(nd->profile->output_mappings, am, NULL))
 186                 continue;
 187
 188             sink_inputs = pa_sink_move_all_start(am->sink, sink_inputs);
 189             pa_alsa_sink_free(am->sink);
 190             am->sink = NULL;
 191         }
 192
 193     if (od->profile && od->profile->input_mappings)
 194         PA_IDXSET_FOREACH(am, od->profile->input_mappings, idx) {
 195             if (!am->source)
 196                 continue;
 197
 198             if (nd->profile &&
 199                 nd->profile->input_mappings &&
 200                 pa_idxset_get_by_data(nd->profile->input_mappings, am, NULL))
 201                 continue;
 202
 203             source_outputs = pa_source_move_all_start(am->source, source_outputs);
 204             pa_alsa_source_free(am->source);
 205             am->source = NULL;
 206         }
 207
 208     if (nd->profile && nd->profile->output_mappings)
 209         PA_IDXSET_FOREACH(am, nd->profile->output_mappings, idx) {
 210
 211             if (!am->sink)
 212                 am->sink = pa_alsa_sink_new(c->module, u->modargs, __FILE__, c, am);
 213
 214             if (sink_inputs && am->sink) {
 215                 pa_sink_move_all_finish(am->sink, sink_inputs, FALSE);
 216                 sink_inputs = NULL;
 217             }
 218         }
 219
 220     if (nd->profile && nd->profile->input_mappings)
 221         PA_IDXSET_FOREACH(am, nd->profile->input_mappings, idx) {
 222
 223             if (!am->source)
 224                 am->source = pa_alsa_source_new(c->module, u->modargs, __FILE__, c, am);
 225
 226             if (source_outputs && am->source) {
 227                 pa_source_move_all_finish(am->source, source_outputs, FALSE);
 228                 source_outputs = NULL;
 229             }
 230         }
 231
 232     if (sink_inputs)
 233         pa_sink_move_all_fail(sink_inputs);
 234
 235     if (source_outputs)
 236         pa_source_move_all_fail(source_outputs);
 237
 238     return 0;
 239 }
 240
 241 static void init_profile(struct userdata *u) {
 242     uint32_t idx;
 243     pa_alsa_mapping *am;
 244     struct profile_data *d;
 245
 246     pa_assert(u);
 247
 248     d = PA_CARD_PROFILE_DATA(u->card->active_profile);
 249
 250     if (d->profile && d->profile->output_mappings)
 251         PA_IDXSET_FOREACH(am, d->profile->output_mappings, idx)
 252             am->sink = pa_alsa_sink_new(u->module, u->modargs, __FILE__, u->card, am);
 253
 254     if (d->profile && d->profile->input_mappings)
 255         PA_IDXSET_FOREACH(am, d->profile->input_mappings, idx)
 256             am->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, am);
 257 }
 258
 259 static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
 260     char *t;
 261     const char *n;
 262
 263     pa_assert(data);
 264     pa_assert(ma);
 265     pa_assert(device_id);
 266
 267     if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
 268         pa_card_new_data_set_name(data, n);
 269         data->namereg_fail = TRUE;
 270         return;
 271     }
 272
 273     if ((n = pa_modargs_get_value(ma, "name", NULL)))
 274         data->namereg_fail = TRUE;
 275     else {
 276         n = device_id;
 277         data->namereg_fail = FALSE;
 278     }
 279
 280     t = pa_sprintf_malloc("alsa_card.%s", n);
 281     pa_card_new_data_set_name(data, t);
 282     pa_xfree(t);
 283 }
 284
 285 int pa__init(pa_module *m) {
 286     pa_card_new_data data;
 287     pa_modargs *ma;
 288     int alsa_card_index;
 289     struct userdata *u;
 290     pa_reserve_wrapper *reserve = NULL;
 291     const char *description;
 292     char *fn = NULL;
 293     pa_bool_t namereg_fail = FALSE;
 294
 295     pa_alsa_refcnt_inc();
 296
 297     pa_assert(m);
 298
 299     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 300         pa_log("Failed to parse module arguments");
 301         goto fail;
 302     }
 303
 304     m->userdata = u = pa_xnew0(struct userdata, 1);
 305     u->core = m->core;
 306     u->module = m;
 307     u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
 308     u->modargs = ma;
 309
 310     if ((alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
 311         pa_log("Card '%s' doesn't exist: %s", u->device_id, pa_alsa_strerror(alsa_card_index));
 312         goto fail;
 313     }
 314
 315     if (!pa_in_system_mode()) {
 316         char *rname;
 317
 318         if ((rname = pa_alsa_get_reserve_name(u->device_id))) {
 319             reserve = pa_reserve_wrapper_get(m->core, rname);
 320             pa_xfree(rname);
 321
 322             if (!reserve)
 323                 goto fail;
 324         }
 325     }
 326
 327 #ifdef HAVE_UDEV
 328     fn = pa_udev_get_property(alsa_card_index, "PULSE_PROFILE_SET");
 329 #endif
 330
 331     u->profile_set = pa_alsa_profile_set_new(fn, &u->core->default_channel_map);
 332     pa_xfree(fn);
 333
 334     if (!u->profile_set)
 335         goto fail;
 336
 337     pa_alsa_profile_set_probe(u->profile_set, u->device_id, &m->core->default_sample_spec, m->core->default_n_fragments, m->core->default_fragment_size_msec);
 338
 339     pa_card_new_data_init(&data);
 340     data.driver = __FILE__;
 341     data.module = m;
 342
 343     pa_alsa_init_proplist_card(m->core, data.proplist, alsa_card_index);
 344
 345     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
 346     pa_alsa_init_description(data.proplist);
 347     set_card_name(&data, ma, u->device_id);
 348
 349     /* We need to give pa_modargs_get_value_boolean() a pointer to a local
 350      * variable instead of using &data.namereg_fail directly, because
 351      * data.namereg_fail is a bitfield and taking the address of a bitfield
 352      * variable is impossible. */
 353     namereg_fail = data.namereg_fail;
 354     if (pa_modargs_get_value_boolean(ma, "namereg_fail", &namereg_fail) < 0) {
 355         pa_log("Failed to parse boolean argument namereg_fail.");
 356         pa_card_new_data_done(&data);
 357         goto fail;
 358     }
 359     data.namereg_fail = namereg_fail;
 360
 361     if (reserve)
 362         if ((description = pa_proplist_gets(data.proplist, PA_PROP_DEVICE_DESCRIPTION)))
 363             pa_reserve_wrapper_set_application_device_name(reserve, description);
 364
 365     data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
 366     add_profiles(u, data.profiles);
 367
 368     if (pa_hashmap_isempty(data.profiles)) {
 369         pa_log("Failed to find a working profile.");
 370         pa_card_new_data_done(&data);
 371         goto fail;
 372     }
 373
 374     add_disabled_profile(data.profiles);
 375
 376     if (pa_modargs_get_proplist(ma, "card_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
 377         pa_log("Invalid properties");
 378         pa_card_new_data_done(&data);
 379         goto fail;
 380     }
 381
 382     u->card = pa_card_new(m->core, &data);
 383     pa_card_new_data_done(&data);
 384
 385     if (!u->card)
 386         goto fail;
 387
 388     u->card->userdata = u;
 389     u->card->set_profile = card_set_profile;
 390
 391     init_profile(u);
 392
 393     if (reserve)
 394         pa_reserve_wrapper_unref(reserve);
 395
 396     return 0;
 397
 398 fail:
 399     if (reserve)
 400         pa_reserve_wrapper_unref(reserve);
 401
 402     pa__done(m);
 403
 404     return -1;
 405 }
 406
 407 int pa__get_n_used(pa_module *m) {
 408     struct userdata *u;
 409     int n = 0;
 410     uint32_t idx;
 411     pa_sink *sink;
 412     pa_source *source;
 413
 414     pa_assert(m);
 415     pa_assert_se(u = m->userdata);
 416     pa_assert(u->card);
 417
 418     PA_IDXSET_FOREACH(sink, u->card->sinks, idx)
 419         n += pa_sink_linked_by(sink);
 420
 421     PA_IDXSET_FOREACH(source, u->card->sources, idx)
 422         n += pa_source_linked_by(source);
 423
 424     return n;
 425 }
 426
 427 void pa__done(pa_module*m) {
 428     struct userdata *u;
 429
 430     pa_assert(m);
 431
 432     if (!(u = m->userdata))
 433         goto finish;
 434
 435     if (u->card && u->card->sinks) {
 436         pa_sink *s;
 437
 438         while ((s = pa_idxset_steal_first(u->card->sinks, NULL)))
 439             pa_alsa_sink_free(s);
 440     }
 441
 442     if (u->card && u->card->sources) {
 443         pa_source *s;
 444
 445         while ((s = pa_idxset_steal_first(u->card->sources, NULL)))
 446             pa_alsa_source_free(s);
 447     }
 448
 449     if (u->card)
 450         pa_card_free(u->card);
 451
 452     if (u->modargs)
 453         pa_modargs_free(u->modargs);
 454
 455     if (u->profile_set)
 456         pa_alsa_profile_set_free(u->profile_set);
 457
 458     pa_xfree(u->device_id);
 459     pa_xfree(u);
 460
 461 finish:
 462     pa_alsa_refcnt_dec();
 463 }