diff options
Diffstat (limited to 'src/modules/module-intended-roles.c')
| -rw-r--r-- | src/modules/module-intended-roles.c | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/src/modules/module-intended-roles.c b/src/modules/module-intended-roles.c new file mode 100644 index 00000000..036600e4 --- /dev/null +++ b/src/modules/module-intended-roles.c @@ -0,0 +1,439 @@ +/*** + This file is part of PulseAudio. + + Copyright 2009 Lennart Poettering + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of the License, + or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PulseAudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> + +#include <pulse/xmalloc.h> +#include <pulse/volume.h> +#include <pulse/timeval.h> +#include <pulse/util.h> + +#include <pulsecore/core-error.h> +#include <pulsecore/module.h> +#include <pulsecore/core-util.h> +#include <pulsecore/modargs.h> +#include <pulsecore/log.h> +#include <pulsecore/core-subscribe.h> +#include <pulsecore/sink-input.h> +#include <pulsecore/source-output.h> +#include <pulsecore/namereg.h> +#include <pulsecore/protocol-native.h> +#include <pulsecore/pstream.h> +#include <pulsecore/pstream-util.h> +#include <pulsecore/database.h> + +#include "module-stream-restore-symdef.h" + +PA_MODULE_AUTHOR("Lennart Poettering"); +PA_MODULE_DESCRIPTION("Automatically set device of streams based of intended roles of devices"); +PA_MODULE_VERSION(PACKAGE_VERSION); +PA_MODULE_LOAD_ONCE(TRUE); +PA_MODULE_USAGE( + "on_hotplug=<When new device becomes available, recheck streams?> " + "on_rescue=<When device becomes unavailable, recheck streams?>"); + +static const char* const valid_modargs[] = { + "on_hotplug", + "on_rescue", + NULL +}; + +struct userdata { + pa_core *core; + pa_module *module; + pa_hook_slot + *sink_input_new_hook_slot, + *source_output_new_hook_slot, + *sink_put_hook_slot, + *source_put_hook_slot, + *sink_unlink_hook_slot, + *source_unlink_hook_slot; + + pa_bool_t on_hotplug:1; + pa_bool_t on_rescue:1; +}; + +static pa_bool_t role_match(pa_proplist *proplist, const char *role) { + const char *ir; + char *r; + const char *state; + + if (!(ir = pa_proplist_gets(proplist, PA_PROP_DEVICE_INTENDED_ROLES))) + return FALSE; + + while ((r = pa_split_spaces(ir, &state))) { + + if (pa_streq(role, r)) { + pa_xfree(r); + return TRUE; + } + + pa_xfree(r); + } + + return FALSE; +} + +static pa_hook_result_t sink_input_new_hook_callback(pa_core *c, pa_sink_input_new_data *new_data, struct userdata *u) { + const char *role; + pa_sink *s, *def; + uint32_t idx; + + pa_assert(c); + pa_assert(new_data); + pa_assert(u); + + if (!new_data->proplist) { + pa_log_debug("New stream lacks property data."); + return PA_HOOK_OK; + } + + if (new_data->sink) { + pa_log_debug("Not setting device for stream %s, because already set.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME))); + return PA_HOOK_OK; + } + + if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE))) { + 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))); + return PA_HOOK_OK; + } + + /* Prefer the default sink over any other sink, just in case... */ + if ((def = pa_namereg_get_default_sink(c))) + if (role_match(def->proplist, role)) { + new_data->sink = def; + new_data->save_sink = FALSE; + return PA_HOOK_OK; + } + + PA_IDXSET_FOREACH(s, c->sinks, idx) { + if (s == def) + continue; + + if (role_match(s->proplist, role)) { + new_data->sink = s; + new_data->save_sink = FALSE; + return PA_HOOK_OK; + } + } + + return PA_HOOK_OK; +} + +static pa_hook_result_t source_output_new_hook_callback(pa_core *c, pa_source_output_new_data *new_data, struct userdata *u) { + const char *role; + pa_source *s, *def; + uint32_t idx; + + pa_assert(c); + pa_assert(new_data); + pa_assert(u); + + if (!new_data->proplist) { + pa_log_debug("New stream lacks property data."); + return PA_HOOK_OK; + } + + if (new_data->source) { + pa_log_debug("Not setting device for stream %s, because already set.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME))); + return PA_HOOK_OK; + } + + if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE))) { + 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))); + return PA_HOOK_OK; + } + + /* Prefer the default source over any other source, just in case... */ + if ((def = pa_namereg_get_default_source(c))) + if (role_match(def->proplist, role)) { + new_data->source = def; + new_data->save_source = FALSE; + return PA_HOOK_OK; + } + + PA_IDXSET_FOREACH(s, c->sources, idx) { + if (s == def) + continue; + + if (role_match(s->proplist, role)) { + new_data->source = s; + new_data->save_source = FALSE; + return PA_HOOK_OK; + } + } + + return PA_HOOK_OK; +} + +static pa_hook_result_t sink_put_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) { + pa_sink_input *si; + uint32_t idx; + + pa_assert(c); + pa_assert(sink); + pa_assert(u); + pa_assert(u->on_hotplug); + + PA_IDXSET_FOREACH(si, c->sink_inputs, idx) { + const char *role; + + if (si->sink == sink) + continue; + + if (si->save_sink) + continue; + + if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE))) + continue; + + if (role_match(si->sink->proplist, role)) + continue; + + if (!role_match(sink->proplist, role)) + continue; + + pa_sink_input_move_to(si, sink, FALSE); + } + + return PA_HOOK_OK; +} + +static pa_hook_result_t source_put_hook_callback(pa_core *c, pa_source *source, struct userdata *u) { + pa_source_output *so; + uint32_t idx; + + pa_assert(c); + pa_assert(source); + pa_assert(u); + pa_assert(u->on_hotplug); + + PA_IDXSET_FOREACH(so, c->source_outputs, idx) { + const char *role; + + if (so->source == source) + continue; + + if (so->save_source) + continue; + + if (so->direct_on_input) + continue; + + if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE))) + continue; + + if (role_match(so->source->proplist, role)) + continue; + + if (!role_match(source->proplist, role)) + continue; + + pa_source_output_move_to(so, source, FALSE); + } + + return PA_HOOK_OK; +} + +static pa_hook_result_t sink_unlink_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) { + pa_sink_input *si; + uint32_t idx; + pa_sink *def; + + pa_assert(c); + pa_assert(sink); + pa_assert(u); + pa_assert(u->on_rescue); + + /* There's no point in doing anything if the core is shut down anyway */ + if (c->state == PA_CORE_SHUTDOWN) + return PA_HOOK_OK; + + /* If there not default sink, then there is no sink at all */ + if (!(def = pa_namereg_get_default_sink(c))) + return PA_HOOK_OK; + + PA_IDXSET_FOREACH(si, sink->inputs, idx) { + const char *role; + uint32_t jdx; + pa_sink *d; + + if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE))) + continue; + + /* Would the default sink fit? If so, let's use it */ + if (def != sink && role_match(def->proplist, role)) { + pa_sink_input_move_to(si, def, FALSE); + continue; + } + + /* Try to find some other fitting sink */ + PA_IDXSET_FOREACH(d, c->sinks, jdx) { + if (d == def || d == sink) + continue; + + if (role_match(d->proplist, role)) { + pa_sink_input_move_to(si, d, FALSE); + break; + } + } + } + + return PA_HOOK_OK; +} + +static pa_hook_result_t source_unlink_hook_callback(pa_core *c, pa_source *source, struct userdata *u) { + pa_source_output *so; + uint32_t idx; + pa_source *def; + + pa_assert(c); + pa_assert(source); + pa_assert(u); + pa_assert(u->on_rescue); + + /* There's no point in doing anything if the core is shut down anyway */ + if (c->state == PA_CORE_SHUTDOWN) + return PA_HOOK_OK; + + /* If there not default source, then there is no source at all */ + if (!(def = pa_namereg_get_default_source(c))) + return PA_HOOK_OK; + + PA_IDXSET_FOREACH(so, source->outputs, idx) { + const char *role; + uint32_t jdx; + pa_source *d; + + if (so->direct_on_input) + continue; + + if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE))) + continue; + + /* Would the default source fit? If so, let's use it */ + if (def != source && role_match(def->proplist, role) && !source->monitor_of == !def->monitor_of) { + pa_source_output_move_to(so, def, FALSE); + continue; + } + + /* Try to find some other fitting source */ + PA_IDXSET_FOREACH(d, c->sources, jdx) { + if (d == def || d == source) + continue; + + if (role_match(d->proplist, role) && !source->monitor_of == !d->monitor_of) { + pa_source_output_move_to(so, d, FALSE); + break; + } + } + } + + return PA_HOOK_OK; +} + +int pa__init(pa_module*m) { + pa_modargs *ma = NULL; + struct userdata *u; + pa_bool_t on_hotplug = TRUE, on_rescue = TRUE; + + pa_assert(m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log("Failed to parse module arguments"); + goto fail; + } + + if (pa_modargs_get_value_boolean(ma, "on_hotplug", &on_hotplug) < 0 || + pa_modargs_get_value_boolean(ma, "on_rescue", &on_rescue) < 0) { + pa_log("on_hotplug= and on_rescue= expect boolean arguments"); + goto fail; + } + + m->userdata = u = pa_xnew0(struct userdata, 1); + u->core = m->core; + u->module = m; + u->on_hotplug = on_hotplug; + u->on_rescue = on_rescue; + + /* A little bit later than module-stream-restore */ + 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); + 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); + + if (on_hotplug) { + /* A little bit later than module-stream-restore */ + 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); + 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); + } + + if (on_rescue) { + /* A little bit later than module-stream-restore, a little bit earlier than module-rescue-streams, ... */ + 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, NULL); + 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, NULL); + } + + pa_modargs_free(ma); + return 0; + +fail: + pa__done(m); + + if (ma) + pa_modargs_free(ma); + + return -1; +} + +void pa__done(pa_module*m) { + struct userdata* u; + + pa_assert(m); + + if (!(u = m->userdata)) + return; + + if (u->sink_input_new_hook_slot) + pa_hook_slot_free(u->sink_input_new_hook_slot); + if (u->source_output_new_hook_slot) + pa_hook_slot_free(u->source_output_new_hook_slot); + + if (u->sink_put_hook_slot) + pa_hook_slot_free(u->sink_put_hook_slot); + if (u->source_put_hook_slot) + pa_hook_slot_free(u->source_put_hook_slot); + + if (u->sink_unlink_hook_slot) + pa_hook_slot_free(u->sink_unlink_hook_slot); + if (u->source_unlink_hook_slot) + pa_hook_slot_free(u->source_unlink_hook_slot); + + pa_xfree(u); +} |