From 6ed3a7dcc9de81469c5d35a5256e5f50bd48f804 Mon Sep 17 00:00:00 2001 From: Michael Terry Date: Sun, 3 Apr 2011 13:42:44 +0100 Subject: switch-on-connect: Add a new module to allow for hotplugged devices to be used by default. This module implements a simply policy decision that any newly plugged in devices should be used. This is a reasonable approach and paprefs will be updated to allow for this option to be turned on or off. This is more or less a stop-gap solution. When priority lists are implemented in the core, then policy modules may ultimately be re-engineered to adjust the priority lists rather than doing any of their own routing per-se. --- src/modules/module-switch-on-connect.c | 187 +++++++++++++++++++++++++++++++++ 1 file changed, 187 insertions(+) create mode 100644 src/modules/module-switch-on-connect.c (limited to 'src/modules') diff --git a/src/modules/module-switch-on-connect.c b/src/modules/module-switch-on-connect.c new file mode 100644 index 00000000..b121fd9a --- /dev/null +++ b/src/modules/module-switch-on-connect.c @@ -0,0 +1,187 @@ +/*** + This file is part of PulseAudio. + + Copyright 2006 Lennart Poettering + Copyright 2009 Canonical Ltd + + 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 +#endif + +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "module-switch-on-connect-symdef.h" + +PA_MODULE_AUTHOR("Michael Terry"); +PA_MODULE_DESCRIPTION("When a sink/source is added, switch to it"); +PA_MODULE_VERSION(PACKAGE_VERSION); +PA_MODULE_LOAD_ONCE(TRUE); + +static const char* const valid_modargs[] = { + NULL, +}; + +struct userdata { + pa_hook_slot + *sink_put_slot, + *source_put_slot; +}; + +static pa_hook_result_t sink_put_hook_callback(pa_core *c, pa_sink *sink, void* userdata) { + pa_sink_input *i; + uint32_t idx; + pa_sink *def; + const char *s; + + pa_assert(c); + pa_assert(sink); + + /* Don't want to run during startup or shutdown */ + if (c->state != PA_CORE_RUNNING) + return PA_HOOK_OK; + + /* Don't switch to any internal devices */ + if ((s = pa_proplist_gets(sink->proplist, PA_PROP_DEVICE_BUS))) { + if (pa_streq(s, "pci")) + return PA_HOOK_OK; + else if (pa_streq(s, "isa")) + return PA_HOOK_OK; + } + + def = pa_namereg_get_default_sink(c); + if (def == sink) + return PA_HOOK_OK; + + /* Actually do the switch to the new sink */ + pa_namereg_set_default_sink(c, sink); + + /* Now move all old inputs over */ + if (pa_idxset_size(def->inputs) <= 0) { + pa_log_debug("No sink inputs to move away."); + return PA_HOOK_OK; + } + + PA_IDXSET_FOREACH(i, def->inputs, idx) { + if (i->save_sink) + continue; + + if (pa_sink_input_move_to(i, sink, FALSE) < 0) + pa_log_info("Failed to move sink input %u \"%s\" to %s.", i->index, + pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_APPLICATION_NAME)), sink->name); + else + pa_log_info("Sucessfully moved sink input %u \"%s\" to %s.", i->index, + pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_APPLICATION_NAME)), sink->name); + } + + return PA_HOOK_OK; +} + +static pa_hook_result_t source_put_hook_callback(pa_core *c, pa_source *source, void* userdata) { + pa_source_output *o; + uint32_t idx; + pa_source *def; + const char *s; + + pa_assert(c); + pa_assert(source); + + /* Don't want to run during startup or shutdown */ + if (c->state != PA_CORE_RUNNING) + return PA_HOOK_OK; + + /* Don't switch to any internal devices */ + if ((s = pa_proplist_gets(source->proplist, PA_PROP_DEVICE_BUS))) { + if (pa_streq(s, "pci")) + return PA_HOOK_OK; + else if (pa_streq(s, "isa")) + return PA_HOOK_OK; + } + + def = pa_namereg_get_default_source(c); + if (def == source) + return PA_HOOK_OK; + + /* Actually do the switch to the new source */ + pa_namereg_set_default_source(c, source); + + /* Now move all old outputs over */ + if (pa_idxset_size(def->outputs) <= 0) { + pa_log_debug("No source outputs to move away."); + return PA_HOOK_OK; + } + + PA_IDXSET_FOREACH(o, def->outputs, idx) { + if (o->save_source) + continue; + + if (pa_source_output_move_to(o, source, FALSE) < 0) + pa_log_info("Failed to move source output %u \"%s\" to %s.", o->index, + pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_APPLICATION_NAME)), source->name); + else + pa_log_info("Sucessfully moved source output %u \"%s\" to %s.", o->index, + pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_APPLICATION_NAME)), source->name); + } + + return PA_HOOK_OK; +} + +int pa__init(pa_module*m) { + pa_modargs *ma; + struct userdata *u; + + pa_assert(m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log("Failed to parse module arguments"); + return -1; + } + + m->userdata = u = pa_xnew(struct userdata, 1); + + /* A little bit later than module-rescue-streams... */ + u->sink_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE+30, (pa_hook_cb_t) sink_put_hook_callback, u); + u->source_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_LATE+20, (pa_hook_cb_t) source_put_hook_callback, u); + + pa_modargs_free(ma); + return 0; +} + +void pa__done(pa_module*m) { + struct userdata *u; + + pa_assert(m); + + if (!(u = m->userdata)) + return; + + if (u->sink_put_slot) + pa_hook_slot_free(u->sink_put_slot); + if (u->source_put_slot) + pa_hook_slot_free(u->source_put_slot); + + pa_xfree(u); +} -- cgit