/***
This file is part of PulseAudio.
Copyright 2006 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, see .
***/
#ifdef HAVE_CONFIG_H
#include
#endif
#include
#include
#include
#include
#include
#include
#include
#include
#include "module-rescue-streams-symdef.h"
PA_MODULE_AUTHOR("Lennart Poettering");
PA_MODULE_DESCRIPTION("When a sink/source is removed, try to move its streams to the default sink/source");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(true);
static const char* const valid_modargs[] = {
NULL,
};
struct userdata {
pa_hook_slot
*sink_unlink_slot,
*source_unlink_slot,
*sink_input_move_fail_slot,
*source_output_move_fail_slot;
};
static pa_source* find_source_from_port(pa_core *c, pa_device_port *port) {
pa_source *target;
uint32_t idx;
void *state;
pa_device_port *p;
if (!port)
return NULL;
PA_IDXSET_FOREACH(target, c->sources, idx)
PA_HASHMAP_FOREACH(p, target->ports, state)
if (port == p)
return target;
return NULL;
}
static pa_sink* find_sink_from_port(pa_core *c, pa_device_port *port) {
pa_sink *target;
uint32_t idx;
void *state;
pa_device_port *p;
if (!port)
return NULL;
PA_IDXSET_FOREACH(target, c->sinks, idx)
PA_HASHMAP_FOREACH(p, target->ports, state)
if (port == p)
return target;
return NULL;
}
static void build_group_ports(pa_hashmap *g_ports, pa_hashmap *s_ports) {
void *state;
pa_device_port *p;
if (!g_ports || !s_ports)
return;
PA_HASHMAP_FOREACH(p, s_ports, state)
pa_hashmap_put(g_ports, p, p);
}
static pa_sink* find_evacuation_sink(pa_core *c, pa_sink_input *i, pa_sink *skip) {
pa_sink *target, *def, *fb_sink = NULL;
uint32_t idx;
pa_hashmap *all_ports;
pa_device_port *best_port;
pa_assert(c);
pa_assert(i);
def = pa_namereg_get_default_sink(c);
if (def && def != skip && pa_sink_input_may_move_to(i, def))
return def;
all_ports = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
PA_IDXSET_FOREACH(target, c->sinks, idx) {
if (target == def)
continue;
if (target == skip)
continue;
if (!PA_SINK_IS_LINKED(pa_sink_get_state(target)))
continue;
if (!pa_sink_input_may_move_to(i, target))
continue;
if (!fb_sink)
fb_sink = target;
build_group_ports(all_ports, target->ports);
}
best_port = pa_device_port_find_best(all_ports);
pa_hashmap_free(all_ports);
if (best_port)
target = find_sink_from_port(c, best_port);
else
target = fb_sink;
if (!target)
pa_log_debug("No evacuation sink found.");
return target;
}
static pa_hook_result_t sink_unlink_hook_callback(pa_core *c, pa_sink *sink, void* userdata) {
pa_sink_input *i;
uint32_t idx;
pa_assert(c);
pa_assert(sink);
/* 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 (pa_idxset_size(sink->inputs) <= 0) {
pa_log_debug("No sink inputs to move away.");
return PA_HOOK_OK;
}
PA_IDXSET_FOREACH(i, sink->inputs, idx) {
pa_sink *target;
if (!(target = find_evacuation_sink(c, i, sink)))
continue;
if (pa_sink_input_move_to(i, target, 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)), target->name);
else
pa_log_info("Successfully moved sink input %u \"%s\" to %s.", i->index,
pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_APPLICATION_NAME)), target->name);
}
return PA_HOOK_OK;
}
static pa_hook_result_t sink_input_move_fail_hook_callback(pa_core *c, pa_sink_input *i, void *userdata) {
pa_sink *target;
pa_assert(c);
pa_assert(i);
/* 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 (!(target = find_evacuation_sink(c, i, NULL)))
return PA_HOOK_OK;
if (pa_sink_input_finish_move(i, target, 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)), target->name);
return PA_HOOK_OK;
} else {
pa_log_info("Successfully moved sink input %u \"%s\" to %s.", i->index,
pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_APPLICATION_NAME)), target->name);
return PA_HOOK_STOP;
}
}
static pa_source* find_evacuation_source(pa_core *c, pa_source_output *o, pa_source *skip) {
pa_source *target, *def, *fb_source = NULL;
uint32_t idx;
pa_hashmap *all_ports;
pa_device_port *best_port;
pa_assert(c);
pa_assert(o);
def = pa_namereg_get_default_source(c);
if (def && def != skip && pa_source_output_may_move_to(o, def))
return def;
all_ports = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
PA_IDXSET_FOREACH(target, c->sources, idx) {
if (target == def)
continue;
if (target == skip)
continue;
/* We only move to a monitor source if we're already on one */
if (skip && !target->monitor_of != !skip->monitor_of)
continue;
if (!PA_SOURCE_IS_LINKED(pa_source_get_state(target)))
continue;
if (!pa_source_output_may_move_to(o, target))
continue;
if (!fb_source)
fb_source = target;
build_group_ports(all_ports, target->ports);
}
best_port = pa_device_port_find_best(all_ports);
pa_hashmap_free(all_ports);
if (best_port)
target = find_source_from_port(c, best_port);
else
target = fb_source;
if (!target)
pa_log_debug("No evacuation source found.");
return target;
}
static pa_hook_result_t source_unlink_hook_callback(pa_core *c, pa_source *source, void* userdata) {
pa_source_output *o;
uint32_t idx;
pa_assert(c);
pa_assert(source);
/* 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 (pa_idxset_size(source->outputs) <= 0) {
pa_log_debug("No source outputs to move away.");
return PA_HOOK_OK;
}
PA_IDXSET_FOREACH(o, source->outputs, idx) {
pa_source *target;
if (!(target = find_evacuation_source(c, o, source)))
continue;
if (pa_source_output_move_to(o, target, 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)), target->name);
else
pa_log_info("Successfully moved source output %u \"%s\" to %s.", o->index,
pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_APPLICATION_NAME)), target->name);
}
return PA_HOOK_OK;
}
static pa_hook_result_t source_output_move_fail_hook_callback(pa_core *c, pa_source_output *i, void *userdata) {
pa_source *target;
pa_assert(c);
pa_assert(i);
/* 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 (!(target = find_evacuation_source(c, i, NULL)))
return PA_HOOK_OK;
if (pa_source_output_finish_move(i, target, false) < 0) {
pa_log_info("Failed to move source output %u \"%s\" to %s.", i->index,
pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_APPLICATION_NAME)), target->name);
return PA_HOOK_OK;
} else {
pa_log_info("Successfully moved source output %u \"%s\" to %s.", i->index,
pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_APPLICATION_NAME)), target->name);
return PA_HOOK_STOP;
}
}
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-stream-restore, module-intended-roles... */
u->sink_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], PA_HOOK_LATE+20, (pa_hook_cb_t) sink_unlink_hook_callback, u);
u->source_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], PA_HOOK_LATE+20, (pa_hook_cb_t) source_unlink_hook_callback, u);
u->sink_input_move_fail_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_FAIL], PA_HOOK_LATE+20, (pa_hook_cb_t) sink_input_move_fail_hook_callback, u);
u->source_output_move_fail_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FAIL], PA_HOOK_LATE+20, (pa_hook_cb_t) source_output_move_fail_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_unlink_slot)
pa_hook_slot_free(u->sink_unlink_slot);
if (u->source_unlink_slot)
pa_hook_slot_free(u->source_unlink_slot);
if (u->sink_input_move_fail_slot)
pa_hook_slot_free(u->sink_input_move_fail_slot);
if (u->source_output_move_fail_slot)
pa_hook_slot_free(u->source_output_move_fail_slot);
pa_xfree(u);
}