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source: move the streams to the default_source when the source unlink

Browse source 
When a source is unlinked, all streams of this source are moved to
default_source, this action is implemented in the core rather than
modules now.

And after this change, the module-rescue-streams is not needed, but
for backward compatibility, we keep it as a dummy module.

Signed-off-by: Hui Wang <hui.wang@canonical.com>
This commit is contained in:
Hui Wang 2019-12-10 16:26:34 +08:00 • committed by Tanu Kaskinen
parent 976a366c9f
commit 5e0d5a8682
12 changed files with 35 additions and 267 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/daemon/default.pa.in
View file

@ -138,10 +138,6 @@ load-module module-gconf
### that look up the default sink/source get the right value
load-module module-default-device-restore
### Automatically move streams to the default sink if the sink they are
### connected to dies, similar for sources
load-module module-rescue-streams
### Make sure we always have a sink around, even if it is a null sink.
load-module module-always-sink

4
src/daemon/system.pa.in
View file

@ -52,10 +52,6 @@ load-module module-native-protocol-unix
### that look up the default sink/source get the right value
load-module module-default-device-restore
### Automatically move streams to the default sink if the sink they are
### connected to dies, similar for sources
load-module module-rescue-streams
### Make sure we always have a sink around, even if it is a null sink.
load-module module-always-sink

2
src/modules/module-device-manager.c
View file

@ -1596,7 +1596,7 @@ int pa__init(pa_module*m) {
}
if (on_rescue) {
/* A little bit later than module-stream-restore, a little bit earlier than module-intended-roles, module-rescue-streams, ... */
/* A little bit later than module-stream-restore, a little bit earlier than module-intended-roles, ... */
u->sink_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], PA_HOOK_LATE+5, (pa_hook_cb_t) sink_unlink_hook_callback, u);
u->source_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], PA_HOOK_LATE+5, (pa_hook_cb_t) source_unlink_hook_callback, u);
}

6
src/modules/module-filter-apply.c
View file

@ -687,8 +687,7 @@ static pa_hook_result_t sink_unlink_cb(pa_core *core, pa_sink *sink, struct user
uint32_t idx;
/* Attempt to rescue any streams to the parent sink as this is likely
* the best course of action (as opposed to a generic rescue via
* module-rescue-streams */
* the best course of action */
if (filter->sink == sink) {
pa_sink_input *i;
@ -769,8 +768,7 @@ static pa_hook_result_t source_unlink_cb(pa_core *core, pa_source *source, struc
uint32_t idx;
/* Attempt to rescue any streams to the parent source as this is likely
* the best course of action (as opposed to a generic rescue via
* module-rescue-streams */
* the best course of action */
if (filter->source == source) {
pa_source_output *o;

2
src/modules/module-intended-roles.c
View file

@ -398,7 +398,7 @@ int pa__init(pa_module*m) {
}
if (on_rescue) {
/* A little bit later than module-stream-restore, a little bit earlier than module-rescue-streams, ... */
/* A little bit later than module-stream-restore, ... */
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);
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);
}

183
src/modules/module-rescue-streams.c
View file

@ -24,200 +24,23 @@
#include <pulse/xmalloc.h>
#include <pulsecore/core.h>
#include <pulsecore/source-output.h>
#include <pulsecore/modargs.h>
#include <pulsecore/log.h>
#include <pulsecore/namereg.h>
#include <pulsecore/core-util.h>
PA_MODULE_AUTHOR("Lennart Poettering");
PA_MODULE_DESCRIPTION("When a source is removed, try to move its streams to the default source");
PA_MODULE_DESCRIPTION("This module is obsolete, please remove it from your configuration.");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(true);
static const char* const valid_modargs[] = {
NULL,
};
struct userdata {
pa_hook_slot
*source_unlink_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 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_source* find_evacuation_source(pa_core *c, pa_source_output *o, pa_source *skip) {
pa_source *target, *fb_source = NULL;
uint32_t idx;
pa_hashmap *all_ports;
pa_device_port *best_port;
pa_assert(c);
pa_assert(o);
if (c->default_source && c->default_source != skip && pa_source_output_may_move_to(o, c->default_source))
return c->default_source;
all_ports = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
PA_IDXSET_FOREACH(target, c->sources, idx) {
if (target == c->default_source)
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(target->state))
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;
}
pa_log("module-rescue-stream is obsolete and should no longer be loaded. Please remove it from your configuration.");
m->userdata = u = pa_xnew(struct userdata, 1);
pa_module_unload_request(m, false);
/* A little bit later than module-stream-restore, module-intended-roles... */
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->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->source_unlink_slot)
pa_hook_slot_free(u->source_unlink_slot);
if (u->source_output_move_fail_slot)
pa_hook_slot_free(u->source_output_move_fail_slot);
pa_xfree(u);
}

74
src/modules/module-stream-restore.c
View file

@ -65,7 +65,7 @@ PA_MODULE_USAGE(
"restore_volume=<Save/restore volumes?> "
"restore_muted=<Save/restore muted states?> "
"on_hotplug=<This argument is obsolete, please remove it from configuration> "
"on_rescue=<When device becomes unavailable, recheck streams?> "
"on_rescue=<This argument is obsolete, please remove it from configuration> "
"fallback_table=<filename>");
#define SAVE_INTERVAL (10 * PA_USEC_PER_SEC)
@ -95,7 +95,6 @@ struct userdata {
*sink_input_fixate_hook_slot,
*source_output_new_hook_slot,
*source_output_fixate_hook_slot,
*source_unlink_hook_slot,
*connection_unlink_hook_slot;
pa_time_event *save_time_event;
pa_database* database;
@ -103,7 +102,6 @@ struct userdata {
bool restore_device:1;
bool restore_volume:1;
bool restore_muted:1;
bool on_rescue:1;
pa_native_protocol *protocol;
pa_idxset *subscribed;
@ -1641,57 +1639,6 @@ static pa_hook_result_t source_output_fixate_hook_callback(pa_core *c, pa_source
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_assert(c);
pa_assert(source);
pa_assert(u);
pa_assert(u->on_rescue && u->restore_device);
/* There's no point in doing anything if the core is shut down anyway */
if (c->state == PA_CORE_SHUTDOWN)
return PA_HOOK_OK;
PA_IDXSET_FOREACH(so, source->outputs, idx) {
char *name;
struct entry *e;
if (so->direct_on_input)
continue;
if (!so->source)
continue;
/* Skip this source output if it is connecting a filter source to
* the master */
if (so->destination_source)
continue;
if (!(name = pa_proplist_get_stream_group(so->proplist, "source-output", IDENTIFICATION_PROPERTY)))
continue;
if ((e = entry_read(u, name))) {
if (e->device_valid) {
pa_source *d;
if ((d = pa_namereg_get(c, e->device, PA_NAMEREG_SOURCE)) &&
d != source &&
PA_SOURCE_IS_LINKED(d->state))
pa_source_output_move_to(so, d, true);
}
entry_free(e);
}
pa_xfree(name);
}
return PA_HOOK_OK;
}
static int fill_db(struct userdata *u, const char *filename) {
FILE *f;
int n = 0;
@ -2271,7 +2218,8 @@ int pa__init(pa_module*m) {
pa_sink_input *si;
pa_source_output *so;
uint32_t idx;
bool restore_device = true, restore_volume = true, restore_muted = true, on_rescue = true;
bool restore_device = true, restore_volume = true, restore_muted = true;
#ifdef HAVE_DBUS
pa_datum key;
bool done;
@ -2286,14 +2234,14 @@ int pa__init(pa_module*m) {
if (pa_modargs_get_value_boolean(ma, "restore_device", &restore_device) < 0 ||
pa_modargs_get_value_boolean(ma, "restore_volume", &restore_volume) < 0 ||
pa_modargs_get_value_boolean(ma, "restore_muted", &restore_muted) < 0 ||
pa_modargs_get_value_boolean(ma, "on_rescue", &on_rescue) < 0) {
pa_log("restore_device=, restore_volume=, restore_muted= and on_rescue= expect boolean arguments");
pa_modargs_get_value_boolean(ma, "restore_muted", &restore_muted) < 0) {
pa_log("restore_device=, restore_volume= and restore_muted= expect boolean arguments");
goto fail;
}
if (pa_modargs_get_value(ma, "on_hotplug", NULL) != NULL)
pa_log("on_hotplug is an obsolete argument, please remove it from your configuration");
if (pa_modargs_get_value(ma, "on_hotplug", NULL) != NULL ||
pa_modargs_get_value(ma, "on_rescue", NULL) != NULL)
pa_log("on_hotplug and on_rescue are obsolete arguments, please remove them from your configuration");
if (!restore_muted && !restore_volume && !restore_device)
pa_log_warn("Neither restoring volume, nor restoring muted, nor restoring device enabled!");
@ -2304,7 +2252,6 @@ int pa__init(pa_module*m) {
u->restore_device = restore_device;
u->restore_volume = restore_volume;
u->restore_muted = restore_muted;
u->on_rescue = on_rescue;
u->subscribed = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
u->protocol = pa_native_protocol_get(m->core);
@ -2320,11 +2267,6 @@ int pa__init(pa_module*m) {
pa_module_hook_connect(m, &m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], PA_HOOK_EARLY, (pa_hook_cb_t) source_output_new_hook_callback, u);
}
if (restore_device && on_rescue) {
/* A little bit earlier than module-intended-roles, module-rescue-streams, ... */
pa_module_hook_connect(m, &m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], PA_HOOK_LATE, (pa_hook_cb_t) source_unlink_hook_callback, u);
}
if (restore_volume || restore_muted) {
pa_module_hook_connect(m, &m->core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], PA_HOOK_EARLY, (pa_hook_cb_t) sink_input_fixate_hook_callback, u);
pa_module_hook_connect(m, &m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE], PA_HOOK_EARLY, (pa_hook_cb_t) source_output_fixate_hook_callback, u);

1
src/modules/module-switch-on-connect.c
View file

@ -188,7 +188,6 @@ int pa__init(pa_module*m) {
m->userdata = u = pa_xnew0(struct userdata, 1);
/* A little bit later than module-rescue-streams... */
pa_module_hook_connect(m, &m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE+30, (pa_hook_cb_t) sink_put_hook_callback, u);
pa_module_hook_connect(m, &m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_LATE+20, (pa_hook_cb_t) source_put_hook_callback, u);

2
src/pulsecore/core.c
View file

@ -438,7 +438,7 @@ void pa_core_update_default_source(pa_core *core) {
/* try to move the streams from old_default_source to the new default_source conditionally */
if (old_default_source)
pa_source_move_streams_to_default_source(core, old_default_source);
pa_source_move_streams_to_default_source(core, old_default_source, true);
}
void pa_core_set_exit_idle_time(pa_core *core, int time) {

2
src/pulsecore/device-port.c
View file

@ -116,7 +116,7 @@ void pa_device_port_set_available(pa_device_port *p, pa_available_t status) {
source = pa_device_port_get_source(p);
if (source && p == source->active_port) {
if (source->active_port->available == PA_AVAILABLE_NO)
pa_source_move_streams_to_default_source(p->core, source);
pa_source_move_streams_to_default_source(p->core, source, false);
else
pa_core_move_streams_to_newly_available_preferred_source(p->core, source);
}

16
src/pulsecore/source.c
View file

@ -702,6 +702,9 @@ void pa_source_unlink(pa_source *s) {
pa_core_update_default_source(s->core);
if (linked)
pa_source_move_streams_to_default_source(s->core, s, false);
if (s->card)
pa_idxset_remove_by_data(s->card->sources, s, NULL);
@ -2993,7 +2996,7 @@ void pa_source_set_reference_volume_direct(pa_source *s, const pa_cvolume *volum
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_VOLUME_CHANGED], s);
}
void pa_source_move_streams_to_default_source(pa_core *core, pa_source *old_source) {
void pa_source_move_streams_to_default_source(pa_core *core, pa_source *old_source, bool default_source_changed) {
pa_source_output *o;
uint32_t idx;
bool old_source_is_unavailable = false;
@ -3001,6 +3004,9 @@ void pa_source_move_streams_to_default_source(pa_core *core, pa_source *old_sour
pa_assert(core);
pa_assert(old_source);
if (core->state == PA_CORE_SHUTDOWN)
return;
if (core->default_source == NULL || core->default_source->unlink_requested)
return;
@ -3020,8 +3026,16 @@ void pa_source_move_streams_to_default_source(pa_core *core, pa_source *old_sour
if (pa_safe_streq(old_source->name, o->preferred_source) && !old_source_is_unavailable)
continue;
if (!pa_source_output_may_move_to(o, core->default_source))
continue;
if (default_source_changed)
pa_log_info("The source output %u \"%s\" is moving to %s due to change of the default source.",
o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_APPLICATION_NAME)), core->default_source->name);
else
pa_log_info("The source output %u \"%s\" is moving to %s due to unlink of a source.",
o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_APPLICATION_NAME)), core->default_source->name);
pa_source_output_move_to(o, core->default_source, false);
}
}

2
src/pulsecore/source.h
View file

@ -483,7 +483,7 @@ void pa_source_set_reference_volume_direct(pa_source *s, const pa_cvolume *volum
* PA_AVAILABLE_NO, this function is called to move the streams of the old
* default_source or the source with active_port equals PA_AVAILABLE_NO to the
* current default_source conditionally*/
void pa_source_move_streams_to_default_source(pa_core *core, pa_source *old_source);
void pa_source_move_streams_to_default_source(pa_core *core, pa_source *old_source, bool default_source_changed);
#define pa_source_assert_io_context(s) \
pa_assert(pa_thread_mq_get() || !PA_SOURCE_IS_LINKED((s)->state))