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 #include "alsa-util.h"
  36 #include "alsa-sink.h"
  37 #include "alsa-source.h"
  38 #include "module-alsa-card-symdef.h"
  39
  40 PA_MODULE_AUTHOR("Lennart Poettering");
  41 PA_MODULE_DESCRIPTION("ALSA Card");
  42 PA_MODULE_VERSION(PACKAGE_VERSION);
  43 PA_MODULE_LOAD_ONCE(FALSE);
  44 PA_MODULE_USAGE(
  45         "name=<name for the card/sink/source, to be prefixed> "
  46         "card_name=<name for the card> "
  47         "card_properties=<properties for the card> "
  48         "sink_name=<name for the sink> "
  49         "sink_properties=<properties for the sink> "
  50         "source_name=<name for the source> "
  51         "source_properties=<properties for the source> "
  52         "device_id=<ALSA card index> "
  53         "format=<sample format> "
  54         "rate=<sample rate> "
  55         "fragments=<number of fragments> "
  56         "fragment_size=<fragment size> "
  57         "mmap=<enable memory mapping?> "
  58         "tsched=<enable system timer based scheduling mode?> "
  59         "tsched_buffer_size=<buffer size when using timer based scheduling> "
  60         "tsched_buffer_watermark=<lower fill watermark> "
  61         "profile=<profile name> "
  62         "ignore_dB=<ignore dB information from the device?>");
  63
  64 static const char* const valid_modargs[] = {
  65     "name",
  66     "card_name",
  67     "card_properties",
  68     "sink_name",
  69     "sink_properties",
  70     "source_name",
  71     "source_properties",
  72     "device_id",
  73     "format",
  74     "rate",
  75     "fragments",
  76     "fragment_size",
  77     "mmap",
  78     "tsched",
  79     "tsched_buffer_size",
  80     "tsched_buffer_watermark",
  81     "profile",
  82     "ignore_dB",
  83     NULL
  84 };
  85
  86 #define DEFAULT_DEVICE_ID "0"
  87
  88 struct userdata {
  89     pa_core *core;
  90     pa_module *module;
  91
  92     char *device_id;
  93
  94     pa_card *card;
  95     pa_sink *sink;
  96     pa_source *source;
  97
  98     pa_modargs *modargs;
  99
 100     pa_hashmap *profiles;
 101 };
 102
 103 struct profile_data {
 104     const pa_alsa_profile_info *sink_profile, *source_profile;
 105 };
 106
 107 static void enumerate_cb(
 108         const pa_alsa_profile_info *sink,
 109         const pa_alsa_profile_info *source,
 110         void *userdata) {
 111
 112     struct userdata *u = userdata;
 113     char *t, *n;
 114     pa_card_profile *p;
 115     struct profile_data *d;
 116     unsigned bonus = 0;
 117
 118     if (sink && source) {
 119         n = pa_sprintf_malloc("output-%s+input-%s", sink->name, source->name);
 120         t = pa_sprintf_malloc(_("Output %s + Input %s"), sink->description, _(source->description));
 121     } else if (sink) {
 122         n = pa_sprintf_malloc("output-%s", sink->name);
 123         t = pa_sprintf_malloc(_("Output %s"), _(sink->description));
 124     } else {
 125         pa_assert(source);
 126         n = pa_sprintf_malloc("input-%s", source->name);
 127         t = pa_sprintf_malloc(_("Input %s"), _(source->description));
 128     }
 129
 130     if (sink) {
 131         if (pa_channel_map_equal(&sink->map, &u->core->default_channel_map))
 132             bonus += 50000;
 133         else if (sink->map.channels == u->core->default_channel_map.channels)
 134             bonus += 40000;
 135     }
 136
 137     if (source) {
 138         if (pa_channel_map_equal(&source->map, &u->core->default_channel_map))
 139             bonus += 30000;
 140         else if (source->map.channels == u->core->default_channel_map.channels)
 141             bonus += 20000;
 142     }
 143
 144     pa_log_info("Found profile '%s'", t);
 145
 146     p = pa_card_profile_new(n, t, sizeof(struct profile_data));
 147
 148     pa_xfree(t);
 149     pa_xfree(n);
 150
 151     p->priority =
 152         (sink ? sink->priority : 0) * 100 +
 153         (source ? source->priority : 0) +
 154         bonus;
 155
 156     p->n_sinks = !!sink;
 157     p->n_sources = !!source;
 158
 159     if (sink)
 160         p->max_sink_channels = sink->map.channels;
 161     if (source)
 162         p->max_source_channels = source->map.channels;
 163
 164     d = PA_CARD_PROFILE_DATA(p);
 165
 166     d->sink_profile = sink;
 167     d->source_profile = source;
 168
 169     pa_hashmap_put(u->profiles, p->name, p);
 170 }
 171
 172 static void add_disabled_profile(pa_hashmap *profiles) {
 173     pa_card_profile *p;
 174     struct profile_data *d;
 175
 176     p = pa_card_profile_new("off", _("Off"), sizeof(struct profile_data));
 177
 178     d = PA_CARD_PROFILE_DATA(p);
 179     d->sink_profile = d->source_profile = NULL;
 180
 181     pa_hashmap_put(profiles, p->name, p);
 182 }
 183
 184 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
 185     struct userdata *u;
 186     struct profile_data *nd, *od;
 187
 188     pa_assert(c);
 189     pa_assert(new_profile);
 190     pa_assert_se(u = c->userdata);
 191
 192     nd = PA_CARD_PROFILE_DATA(new_profile);
 193     od = PA_CARD_PROFILE_DATA(c->active_profile);
 194
 195     if (od->sink_profile != nd->sink_profile) {
 196         pa_queue *inputs = NULL;
 197
 198         if (u->sink) {
 199             if (nd->sink_profile)
 200                 inputs = pa_sink_move_all_start(u->sink);
 201
 202             pa_alsa_sink_free(u->sink);
 203             u->sink = NULL;
 204         }
 205
 206         if (nd->sink_profile) {
 207             u->sink = pa_alsa_sink_new(c->module, u->modargs, __FILE__, c, nd->sink_profile);
 208
 209             if (inputs) {
 210                 if (u->sink)
 211                     pa_sink_move_all_finish(u->sink, inputs, FALSE);
 212                 else
 213                     pa_sink_move_all_fail(inputs);
 214             }
 215         }
 216     }
 217
 218     if (od->source_profile != nd->source_profile) {
 219         pa_queue *outputs = NULL;
 220
 221         if (u->source) {
 222             if (nd->source_profile)
 223                 outputs = pa_source_move_all_start(u->source);
 224
 225             pa_alsa_source_free(u->source);
 226             u->source = NULL;
 227         }
 228
 229         if (nd->source_profile) {
 230             u->source = pa_alsa_source_new(c->module, u->modargs, __FILE__, c, nd->source_profile);
 231
 232             if (outputs) {
 233                 if (u->source)
 234                     pa_source_move_all_finish(u->source, outputs, FALSE);
 235                 else
 236                     pa_source_move_all_fail(outputs);
 237             }
 238         }
 239     }
 240
 241     return 0;
 242 }
 243
 244 static void init_profile(struct userdata *u) {
 245     struct profile_data *d;
 246
 247     pa_assert(u);
 248
 249     d = PA_CARD_PROFILE_DATA(u->card->active_profile);
 250
 251     if (d->sink_profile)
 252         u->sink = pa_alsa_sink_new(u->module, u->modargs, __FILE__, u->card, d->sink_profile);
 253
 254     if (d->source_profile)
 255         u->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, d->source_profile);
 256 }
 257
 258 static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
 259     char *t;
 260     const char *n;
 261
 262     pa_assert(data);
 263     pa_assert(ma);
 264     pa_assert(device_id);
 265
 266     if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
 267         pa_card_new_data_set_name(data, n);
 268         data->namereg_fail = TRUE;
 269         return;
 270     }
 271
 272     if ((n = pa_modargs_get_value(ma, "name", NULL)))
 273         data->namereg_fail = TRUE;
 274     else {
 275         n = device_id;
 276         data->namereg_fail = FALSE;
 277     }
 278
 279     t = pa_sprintf_malloc("alsa_card.%s", n);
 280     pa_card_new_data_set_name(data, t);
 281     pa_xfree(t);
 282 }
 283
 284 int pa__init(pa_module *m) {
 285     pa_card_new_data data;
 286     pa_modargs *ma;
 287     int alsa_card_index;
 288     struct userdata *u;
 289     char rname[32];
 290     pa_reserve_wrapper *reserve = NULL;
 291     const char *description;
 292
 293     pa_alsa_redirect_errors_inc();
 294     snd_config_update_free_global();
 295
 296     pa_assert(m);
 297
 298     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 299         pa_log("Failed to parse module arguments");
 300         goto fail;
 301     }
 302
 303     m->userdata = u = pa_xnew(struct userdata, 1);
 304     u->core = m->core;
 305     u->module = m;
 306     u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
 307     u->card = NULL;
 308     u->sink = NULL;
 309     u->source = NULL;
 310     u->modargs = ma;
 311
 312     if ((alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
 313         pa_log("Card '%s' doesn't exist: %s", u->device_id, pa_alsa_strerror(alsa_card_index));
 314         goto fail;
 315     }
 316
 317     pa_snprintf(rname, sizeof(rname), "Audio%i", alsa_card_index);
 318
 319     if (!pa_in_system_mode())
 320         if (!(reserve = pa_reserve_wrapper_get(m->core, rname)))
 321             goto fail;
 322
 323     pa_card_new_data_init(&data);
 324     data.driver = __FILE__;
 325     data.module = m;
 326     pa_alsa_init_proplist_card(m->core, data.proplist, alsa_card_index);
 327     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
 328     pa_alsa_init_description(data.proplist);
 329     set_card_name(&data, ma, u->device_id);
 330
 331     if (reserve)
 332         if ((description = pa_proplist_gets(data.proplist, PA_PROP_DEVICE_DESCRIPTION)))
 333             pa_reserve_wrapper_set_application_device_name(reserve, description);
 334
 335     u->profiles = data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
 336     if (pa_alsa_probe_profiles(u->device_id, &m->core->default_sample_spec, enumerate_cb, u) < 0) {
 337         pa_card_new_data_done(&data);
 338         goto fail;
 339     }
 340
 341     if (pa_hashmap_isempty(data.profiles)) {
 342         pa_log("Failed to find a working profile.");
 343         pa_card_new_data_done(&data);
 344         goto fail;
 345     }
 346
 347     add_disabled_profile(data.profiles);
 348
 349     if (pa_modargs_get_proplist(ma, "card_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
 350         pa_log("Invalid properties");
 351         pa_card_new_data_done(&data);
 352         goto fail;
 353     }
 354
 355     u->card = pa_card_new(m->core, &data);
 356     pa_card_new_data_done(&data);
 357
 358     if (!u->card)
 359         goto fail;
 360
 361     u->card->userdata = u;
 362     u->card->set_profile = card_set_profile;
 363
 364     init_profile(u);
 365
 366     if (reserve)
 367         pa_reserve_wrapper_unref(reserve);
 368
 369     return 0;
 370
 371 fail:
 372     if (reserve)
 373         pa_reserve_wrapper_unref(reserve);
 374
 375     pa__done(m);
 376
 377     return -1;
 378 }
 379
 380 int pa__get_n_used(pa_module *m) {
 381     struct userdata *u;
 382
 383     pa_assert(m);
 384     pa_assert_se(u = m->userdata);
 385
 386     return
 387         (u->sink ? pa_sink_linked_by(u->sink) : 0) +
 388         (u->source ? pa_source_linked_by(u->source) : 0);
 389 }
 390
 391 void pa__done(pa_module*m) {
 392     struct userdata *u;
 393
 394     pa_assert(m);
 395
 396     if (!(u = m->userdata))
 397         goto finish;
 398
 399     if (u->sink)
 400         pa_alsa_sink_free(u->sink);
 401
 402     if (u->source)
 403         pa_alsa_source_free(u->source);
 404
 405     if (u->card)
 406         pa_card_free(u->card);
 407
 408     if (u->modargs)
 409         pa_modargs_free(u->modargs);
 410
 411     pa_xfree(u->device_id);
 412     pa_xfree(u);
 413
 414 finish:
 415     snd_config_update_free_global();
 416     pa_alsa_redirect_errors_dec();
 417 }