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