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authorMichael Terry <michael.terry@canonical.com>2011-04-03 13:42:44 +0100
committerColin Guthrie <colin@mageia.org>2011-04-03 13:42:44 +0100
commit6ed3a7dcc9de81469c5d35a5256e5f50bd48f804 (patch)
treeea1e28d034397f811a0ca282bcc0351e4a6e89a2 /src/modules
parentc083259464e1e140165795a8bf6e3c0cfcbc64fe (diff)
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.
Diffstat (limited to 'src/modules')
-rw-r--r--src/modules/module-switch-on-connect.c187
1 files changed, 187 insertions, 0 deletions
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 <config.h>
+#endif
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/core.h>
+#include <pulsecore/sink-input.h>
+#include <pulsecore/source-output.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/namereg.h>
+#include <pulsecore/core-util.h>
+
+#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);
+}