code.delx.au - pulseaudio/blob - src/modules/module-intended-roles.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/volume.h>
  28 #include <pulse/timeval.h>
  29 #include <pulse/util.h>
  30
  31 #include <pulsecore/core-error.h>
  32 #include <pulsecore/module.h>
  33 #include <pulsecore/core-util.h>
  34 #include <pulsecore/modargs.h>
  35 #include <pulsecore/log.h>
  36 #include <pulsecore/core-subscribe.h>
  37 #include <pulsecore/sink-input.h>
  38 #include <pulsecore/source-output.h>
  39 #include <pulsecore/namereg.h>
  40
  41 #include "module-intended-roles-symdef.h"
  42
  43 PA_MODULE_AUTHOR("Lennart Poettering");
  44 PA_MODULE_DESCRIPTION("Automatically set device of streams based of intended roles of devices");
  45 PA_MODULE_VERSION(PACKAGE_VERSION);
  46 PA_MODULE_LOAD_ONCE(TRUE);
  47 PA_MODULE_USAGE(
  48         "on_hotplug=<When new device becomes available, recheck streams?> "
  49         "on_rescue=<When device becomes unavailable, recheck streams?>");
  50
  51 static const char* const valid_modargs[] = {
  52     "on_hotplug",
  53     "on_rescue",
  54     NULL
  55 };
  56
  57 struct userdata {
  58     pa_core *core;
  59     pa_module *module;
  60
  61     pa_hook_slot
  62         *sink_input_new_hook_slot,
  63         *source_output_new_hook_slot,
  64         *sink_put_hook_slot,
  65         *source_put_hook_slot,
  66         *sink_unlink_hook_slot,
  67         *source_unlink_hook_slot;
  68
  69     pa_bool_t on_hotplug:1;
  70     pa_bool_t on_rescue:1;
  71 };
  72
  73 static pa_bool_t role_match(pa_proplist *proplist, const char *role) {
  74     const char *ir;
  75     char *r;
  76     const char *state = NULL;
  77
  78     if (!(ir = pa_proplist_gets(proplist, PA_PROP_DEVICE_INTENDED_ROLES)))
  79         return FALSE;
  80
  81     while ((r = pa_split_spaces(ir, &state))) {
  82
  83         if (pa_streq(role, r)) {
  84             pa_xfree(r);
  85             return TRUE;
  86         }
  87
  88         pa_xfree(r);
  89     }
  90
  91     return FALSE;
  92 }
  93
  94 static pa_hook_result_t sink_input_new_hook_callback(pa_core *c, pa_sink_input_new_data *new_data, struct userdata *u) {
  95     const char *role;
  96     pa_sink *s, *def;
  97     uint32_t idx;
  98
  99     pa_assert(c);
 100     pa_assert(new_data);
 101     pa_assert(u);
 102
 103     if (!new_data->proplist) {
 104         pa_log_debug("New stream lacks property data.");
 105         return PA_HOOK_OK;
 106     }
 107
 108     if (new_data->sink) {
 109         pa_log_debug("Not setting device for stream %s, because already set.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
 110         return PA_HOOK_OK;
 111     }
 112
 113     if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE))) {
 114         pa_log_debug("Not setting device for stream %s, because it lacks role.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
 115         return PA_HOOK_OK;
 116     }
 117
 118     /* Prefer the default sink over any other sink, just in case... */
 119     if ((def = pa_namereg_get_default_sink(c)))
 120         if (role_match(def->proplist, role)) {
 121             new_data->sink = def;
 122             new_data->save_sink = FALSE;
 123             return PA_HOOK_OK;
 124         }
 125
 126     /* @todo: favour the highest priority device, not the first one we find? */
 127     PA_IDXSET_FOREACH(s, c->sinks, idx) {
 128         if (s == def)
 129             continue;
 130
 131         if (!PA_SINK_IS_LINKED(pa_sink_get_state(s)))
 132             continue;
 133
 134         if (role_match(s->proplist, role)) {
 135             new_data->sink = s;
 136             new_data->save_sink = FALSE;
 137             return PA_HOOK_OK;
 138         }
 139     }
 140
 141     return PA_HOOK_OK;
 142 }
 143
 144 static pa_hook_result_t source_output_new_hook_callback(pa_core *c, pa_source_output_new_data *new_data, struct userdata *u) {
 145     const char *role;
 146     pa_source *s, *def;
 147     uint32_t idx;
 148
 149     pa_assert(c);
 150     pa_assert(new_data);
 151     pa_assert(u);
 152
 153     if (!new_data->proplist) {
 154         pa_log_debug("New stream lacks property data.");
 155         return PA_HOOK_OK;
 156     }
 157
 158     if (new_data->source) {
 159         pa_log_debug("Not setting device for stream %s, because already set.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
 160         return PA_HOOK_OK;
 161     }
 162
 163     if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE))) {
 164         pa_log_debug("Not setting device for stream %s, because it lacks role.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
 165         return PA_HOOK_OK;
 166     }
 167
 168     /* Prefer the default source over any other source, just in case... */
 169     if ((def = pa_namereg_get_default_source(c)))
 170         if (role_match(def->proplist, role)) {
 171             new_data->source = def;
 172             new_data->save_source = FALSE;
 173             return PA_HOOK_OK;
 174         }
 175
 176     PA_IDXSET_FOREACH(s, c->sources, idx) {
 177         if (s->monitor_of)
 178             continue;
 179
 180         if (s == def)
 181             continue;
 182
 183         if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)))
 184             continue;
 185
 186         /* @todo: favour the highest priority device, not the first one we find? */
 187         if (role_match(s->proplist, role)) {
 188             new_data->source = s;
 189             new_data->save_source = FALSE;
 190             return PA_HOOK_OK;
 191         }
 192     }
 193
 194     return PA_HOOK_OK;
 195 }
 196
 197 static pa_hook_result_t sink_put_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) {
 198     pa_sink_input *si;
 199     uint32_t idx;
 200
 201     pa_assert(c);
 202     pa_assert(sink);
 203     pa_assert(u);
 204     pa_assert(u->on_hotplug);
 205
 206     PA_IDXSET_FOREACH(si, c->sink_inputs, idx) {
 207         const char *role;
 208
 209         if (si->sink == sink)
 210             continue;
 211
 212         if (si->save_sink)
 213             continue;
 214
 215         /* Skip this if it is already in the process of being moved
 216          * anyway */
 217         if (!si->sink)
 218             continue;
 219
 220         /* It might happen that a stream and a sink are set up at the
 221            same time, in which case we want to make sure we don't
 222            interfere with that */
 223         if (!PA_SINK_INPUT_IS_LINKED(pa_sink_input_get_state(si)))
 224             continue;
 225
 226         if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE)))
 227             continue;
 228
 229         if (role_match(si->sink->proplist, role))
 230             continue;
 231
 232         if (!role_match(sink->proplist, role))
 233             continue;
 234
 235         pa_sink_input_move_to(si, sink, FALSE);
 236     }
 237
 238     return PA_HOOK_OK;
 239 }
 240
 241 static pa_hook_result_t source_put_hook_callback(pa_core *c, pa_source *source, struct userdata *u) {
 242     pa_source_output *so;
 243     uint32_t idx;
 244
 245     pa_assert(c);
 246     pa_assert(source);
 247     pa_assert(u);
 248     pa_assert(u->on_hotplug);
 249
 250     if (source->monitor_of)
 251         return PA_HOOK_OK;
 252
 253     PA_IDXSET_FOREACH(so, c->source_outputs, idx) {
 254         const char *role;
 255
 256         if (so->source == source)
 257             continue;
 258
 259         if (so->save_source)
 260             continue;
 261
 262         if (so->direct_on_input)
 263             continue;
 264
 265         /* Skip this if it is already in the process of being moved
 266          * anyway */
 267         if (!so->source)
 268             continue;
 269
 270         /* It might happen that a stream and a source are set up at the
 271            same time, in which case we want to make sure we don't
 272            interfere with that */
 273         if (!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(so)))
 274             continue;
 275
 276         if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE)))
 277             continue;
 278
 279         if (role_match(so->source->proplist, role))
 280             continue;
 281
 282         if (!role_match(source->proplist, role))
 283             continue;
 284
 285         pa_source_output_move_to(so, source, FALSE);
 286     }
 287
 288     return PA_HOOK_OK;
 289 }
 290
 291 static pa_hook_result_t sink_unlink_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) {
 292     pa_sink_input *si;
 293     uint32_t idx;
 294     pa_sink *def;
 295
 296     pa_assert(c);
 297     pa_assert(sink);
 298     pa_assert(u);
 299     pa_assert(u->on_rescue);
 300
 301     /* There's no point in doing anything if the core is shut down anyway */
 302     if (c->state == PA_CORE_SHUTDOWN)
 303         return PA_HOOK_OK;
 304
 305     /* If there not default sink, then there is no sink at all */
 306     if (!(def = pa_namereg_get_default_sink(c)))
 307         return PA_HOOK_OK;
 308
 309     PA_IDXSET_FOREACH(si, sink->inputs, idx) {
 310         const char *role;
 311         uint32_t jdx;
 312         pa_sink *d;
 313
 314         if (!si->sink)
 315             continue;
 316
 317         if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE)))
 318             continue;
 319
 320         /* Would the default sink fit? If so, let's use it */
 321         if (def != sink && role_match(def->proplist, role))
 322             if (pa_sink_input_move_to(si, def, FALSE) >= 0)
 323                 continue;
 324
 325         /* Try to find some other fitting sink */
 326         /* @todo: favour the highest priority device, not the first one we find? */
 327         PA_IDXSET_FOREACH(d, c->sinks, jdx) {
 328             if (d == def || d == sink)
 329                 continue;
 330
 331             if (!PA_SINK_IS_LINKED(pa_sink_get_state(d)))
 332                 continue;
 333
 334             if (role_match(d->proplist, role))
 335                 if (pa_sink_input_move_to(si, d, FALSE) >= 0)
 336                     break;
 337         }
 338     }
 339
 340     return PA_HOOK_OK;
 341 }
 342
 343 static pa_hook_result_t source_unlink_hook_callback(pa_core *c, pa_source *source, struct userdata *u) {
 344     pa_source_output *so;
 345     uint32_t idx;
 346     pa_source *def;
 347
 348     pa_assert(c);
 349     pa_assert(source);
 350     pa_assert(u);
 351     pa_assert(u->on_rescue);
 352
 353     /* There's no point in doing anything if the core is shut down anyway */
 354     if (c->state == PA_CORE_SHUTDOWN)
 355         return PA_HOOK_OK;
 356
 357     /* If there not default source, then there is no source at all */
 358     if (!(def = pa_namereg_get_default_source(c)))
 359         return PA_HOOK_OK;
 360
 361     PA_IDXSET_FOREACH(so, source->outputs, idx) {
 362         const char *role;
 363         uint32_t jdx;
 364         pa_source *d;
 365
 366         if (so->direct_on_input)
 367             continue;
 368
 369         if (!so->source)
 370             continue;
 371
 372         if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE)))
 373             continue;
 374
 375         /* Would the default source fit? If so, let's use it */
 376         if (def != source && role_match(def->proplist, role) && !source->monitor_of == !def->monitor_of) {
 377             pa_source_output_move_to(so, def, FALSE);
 378             continue;
 379         }
 380
 381         /* Try to find some other fitting source */
 382         /* @todo: favour the highest priority device, not the first one we find? */
 383         PA_IDXSET_FOREACH(d, c->sources, jdx) {
 384             if (d == def || d == source)
 385                 continue;
 386
 387             if (!PA_SOURCE_IS_LINKED(pa_source_get_state(d)))
 388                 continue;
 389
 390             /* If moving from a monitor, move to another monitor */
 391             if (!source->monitor_of == !d->monitor_of && role_match(d->proplist, role)) {
 392                 pa_source_output_move_to(so, d, FALSE);
 393                 break;
 394             }
 395         }
 396     }
 397
 398     return PA_HOOK_OK;
 399 }
 400
 401 int pa__init(pa_module*m) {
 402     pa_modargs *ma = NULL;
 403     struct userdata *u;
 404     pa_bool_t on_hotplug = TRUE, on_rescue = TRUE;
 405
 406     pa_assert(m);
 407
 408     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 409         pa_log("Failed to parse module arguments");
 410         goto fail;
 411     }
 412
 413     if (pa_modargs_get_value_boolean(ma, "on_hotplug", &on_hotplug) < 0 ||
 414         pa_modargs_get_value_boolean(ma, "on_rescue", &on_rescue) < 0) {
 415         pa_log("on_hotplug= and on_rescue= expect boolean arguments");
 416         goto fail;
 417     }
 418
 419     m->userdata = u = pa_xnew0(struct userdata, 1);
 420     u->core = m->core;
 421     u->module = m;
 422     u->on_hotplug = on_hotplug;
 423     u->on_rescue = on_rescue;
 424
 425     /* A little bit later than module-stream-restore */
 426     u->sink_input_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_NEW], PA_HOOK_EARLY+10, (pa_hook_cb_t) sink_input_new_hook_callback, u);
 427     u->source_output_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], PA_HOOK_EARLY+10, (pa_hook_cb_t) source_output_new_hook_callback, u);
 428
 429     if (on_hotplug) {
 430         /* A little bit later than module-stream-restore */
 431         u->sink_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE+10, (pa_hook_cb_t) sink_put_hook_callback, u);
 432         u->source_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_LATE+10, (pa_hook_cb_t) source_put_hook_callback, u);
 433     }
 434
 435     if (on_rescue) {
 436         /* A little bit later than module-stream-restore, a little bit earlier than module-rescue-streams, ... */
 437         u->sink_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], PA_HOOK_LATE+10, (pa_hook_cb_t) sink_unlink_hook_callback, u);
 438         u->source_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], PA_HOOK_LATE+10, (pa_hook_cb_t) source_unlink_hook_callback, u);
 439     }
 440
 441     pa_modargs_free(ma);
 442     return 0;
 443
 444 fail:
 445     pa__done(m);
 446
 447     if (ma)
 448         pa_modargs_free(ma);
 449
 450     return  -1;
 451 }
 452
 453 void pa__done(pa_module*m) {
 454     struct userdata* u;
 455
 456     pa_assert(m);
 457
 458     if (!(u = m->userdata))
 459         return;
 460
 461     if (u->sink_input_new_hook_slot)
 462         pa_hook_slot_free(u->sink_input_new_hook_slot);
 463     if (u->source_output_new_hook_slot)
 464         pa_hook_slot_free(u->source_output_new_hook_slot);
 465
 466     if (u->sink_put_hook_slot)
 467         pa_hook_slot_free(u->sink_put_hook_slot);
 468     if (u->source_put_hook_slot)
 469         pa_hook_slot_free(u->source_put_hook_slot);
 470
 471     if (u->sink_unlink_hook_slot)
 472         pa_hook_slot_free(u->sink_unlink_hook_slot);
 473     if (u->source_unlink_hook_slot)
 474         pa_hook_slot_free(u->source_unlink_hook_slot);
 475
 476     pa_xfree(u);
 477 }