[pulseaudio-discuss] [PATCH 8/8] module-switch-on-port-available: Route to preferred profile
David Henningsson
david.henningsson at canonical.com
Tue May 5 08:01:14 PDT 2015
This makes the routing slightly more aggressive:
* It will try to route to another profile, if such a profile
is preferred by the port.
* It will allow changing profiles on transitions both to
PA_AVAILABLE_YES and PA_AVAILABLE_NO
To accommodate there is also some refactoring.
Signed-off-by: David Henningsson <david.henningsson at canonical.com>
---
src/modules/module-switch-on-port-available.c | 172 ++++++++++++++++----------
1 file changed, 105 insertions(+), 67 deletions(-)
diff --git a/src/modules/module-switch-on-port-available.c b/src/modules/module-switch-on-port-available.c
index 8de68a3..5dd9786 100644
--- a/src/modules/module-switch-on-port-available.c
+++ b/src/modules/module-switch-on-port-available.c
@@ -74,22 +74,25 @@ static bool profile_good_for_input(pa_card_profile *profile) {
static int try_to_switch_profile(pa_device_port *port) {
pa_card_profile *best_profile = NULL, *profile;
void *state;
+ unsigned best_prio = 0;
- pa_log_debug("Finding best profile");
+ pa_log_debug("Finding best profile for port %s, preferred = %s",
+ port->name, pa_strnull(port->preferred_profile));
PA_HASHMAP_FOREACH(profile, port->profiles, state) {
bool good = false;
-
- if (best_profile && best_profile->priority >= profile->priority)
- continue;
+ const char *name;
+ unsigned prio = profile->priority;
/* We make a best effort to keep other direction unchanged */
switch (port->direction) {
case PA_DIRECTION_OUTPUT:
+ name = profile->output_name;
good = profile_good_for_output(profile);
break;
case PA_DIRECTION_INPUT:
+ name = profile->input_name;
good = profile_good_for_input(profile);
break;
}
@@ -97,7 +100,15 @@ static int try_to_switch_profile(pa_device_port *port) {
if (!good)
continue;
+ /* Give a high bonus in case this is the preferred profile */
+ if (port->preferred_profile && pa_streq(name ? name : profile->name, port->preferred_profile))
+ prio += 1000000;
+
+ if (best_profile && best_prio >= prio)
+ continue;
+
best_profile = profile;
+ best_prio = prio;
}
if (!best_profile) {
@@ -113,98 +124,125 @@ static int try_to_switch_profile(pa_device_port *port) {
return 0;
}
-static void find_sink_and_source(pa_card *card, pa_device_port *port, pa_sink **si, pa_source **so) {
- pa_sink *sink = NULL;
- pa_source *source = NULL;
+struct port_pointers {
+ pa_device_port *port;
+ pa_sink *sink;
+ pa_source *source;
+ bool is_possible_profile_active;
+ bool is_preferred_profile_active;
+ bool is_port_active;
+};
+
+static const char* profile_name_for_dir(pa_card_profile *cp, pa_direction_t dir) {
+ if (dir == PA_DIRECTION_OUTPUT && cp->output_name)
+ return cp->output_name;
+ if (dir == PA_DIRECTION_INPUT && cp->input_name)
+ return cp->input_name;
+ return cp->name;
+}
+
+static struct port_pointers find_port_pointers(pa_device_port *port) {
+ struct port_pointers pp = { .port = port };
uint32_t state;
+ pa_card *card;
+
+ pa_assert(port);
+ pa_assert_se(card = port->card);
switch (port->direction) {
case PA_DIRECTION_OUTPUT:
- PA_IDXSET_FOREACH(sink, card->sinks, state)
- if (port == pa_hashmap_get(sink->ports, port->name))
+ PA_IDXSET_FOREACH(pp.sink, card->sinks, state)
+ if (port == pa_hashmap_get(pp.sink->ports, port->name))
break;
break;
case PA_DIRECTION_INPUT:
- PA_IDXSET_FOREACH(source, card->sources, state)
- if (port == pa_hashmap_get(source->ports, port->name))
+ PA_IDXSET_FOREACH(pp.source, card->sources, state)
+ if (port == pa_hashmap_get(pp.source->ports, port->name))
break;
break;
}
- *si = sink;
- *so = source;
-}
+ pp.is_possible_profile_active =
+ card->active_profile == pa_hashmap_get(port->profiles, card->active_profile->name);
+ pp.is_preferred_profile_active = pp.is_possible_profile_active && (!port->preferred_profile ||
+ pa_safe_streq(port->preferred_profile, profile_name_for_dir(card->active_profile, port->direction)));
+ pp.is_port_active = (pp.sink && pp.sink->active_port == port) || (pp.source && pp.source->active_port == port);
-static pa_hook_result_t port_available_hook_callback(pa_core *c, pa_device_port *port, void* userdata) {
- pa_card* card;
- pa_sink *sink;
- pa_source *source;
- bool is_active_profile, is_active_port;
+ return pp;
+}
- if (port->available == PA_AVAILABLE_UNKNOWN)
- return PA_HOOK_OK;
+/* Switches to a port, switching profiles if necessary or preferred */
+static bool switch_to_port(pa_device_port *port) {
+ struct port_pointers pp = find_port_pointers(port);
- card = port->card;
+ if (pp.is_port_active)
+ return true; /* Already selected */
- if (!card) {
- pa_log_warn("Port %s does not have a card", port->name);
- return PA_HOOK_OK;
+ pa_log_debug("Trying to switch to port %s", port->name);
+ if (!pp.is_preferred_profile_active) {
+ if (try_to_switch_profile(port) < 0) {
+ if (pp.is_possible_profile_active)
+ return false;
+ }
+ else
+ /* Now that profile has changed, our sink and source pointers must be updated */
+ pp = find_port_pointers(port);
}
- if (pa_idxset_size(card->sinks) == 0 && pa_idxset_size(card->sources) == 0)
- /* This card is not initialized yet. We'll handle it in
- sink_new / source_new callbacks later. */
- return PA_HOOK_OK;
+ if (pp.source)
+ pa_source_set_port(pp.source, port->name, false);
+ if (pp.sink)
+ pa_sink_set_port(pp.sink, port->name, false);
+ return true;
+}
- find_sink_and_source(card, port, &sink, &source);
+/* Switches away from a port, switching profiles if necessary or preferred */
+static bool switch_from_port(pa_device_port *port) {
+ struct port_pointers pp = find_port_pointers(port);
+ pa_device_port *p, *best_port = NULL;
+ void *state;
- is_active_profile = card->active_profile == pa_hashmap_get(port->profiles, card->active_profile->name);
- is_active_port = (sink && sink->active_port == port) || (source && source->active_port == port);
+ if (!pp.is_port_active)
+ return true; /* Already deselected */
- if (port->available == PA_AVAILABLE_NO && !is_active_port)
- return PA_HOOK_OK;
+ /* Try to find a good enough port to switch to */
+ PA_HASHMAP_FOREACH(p, port->card->ports, state)
+ if (p->direction == port->direction && p != port && p->available != PA_AVAILABLE_NO &&
+ (!best_port || best_port->priority < p->priority))
+ best_port = p;
- if (port->available == PA_AVAILABLE_YES) {
- if (is_active_port)
- return PA_HOOK_OK;
+ pa_log_debug("Trying to switch away from port %s, found %s", port->name, best_port ? best_port->name : "no better option");
- if (!is_active_profile) {
- if (try_to_switch_profile(port) < 0)
- return PA_HOOK_OK;
+ if (best_port)
+ return switch_to_port(best_port);
- pa_assert(card->active_profile == pa_hashmap_get(port->profiles, card->active_profile->name));
+ return false;
+}
- /* Now that profile has changed, our sink and source pointers must be updated */
- find_sink_and_source(card, port, &sink, &source);
- }
- if (source)
- pa_source_set_port(source, port->name, false);
- if (sink)
- pa_sink_set_port(sink, port->name, false);
- }
-
- if (port->available == PA_AVAILABLE_NO) {
- if (sink) {
- pa_device_port *p2 = pa_device_port_find_best(sink->ports);
+static pa_hook_result_t port_available_hook_callback(pa_core *c, pa_device_port *port, void* userdata) {
+ pa_assert(port);
- if (p2 && p2->available != PA_AVAILABLE_NO)
- pa_sink_set_port(sink, p2->name, false);
- else {
- /* Maybe try to switch to another profile? */
- }
- }
+ if (!port->card) {
+ pa_log_warn("Port %s does not have a card", port->name);
+ return PA_HOOK_OK;
+ }
- if (source) {
- pa_device_port *p2 = pa_device_port_find_best(source->ports);
+ if (pa_idxset_size(port->card->sinks) == 0 && pa_idxset_size(port->card->sources) == 0)
+ /* This card is not initialized yet. We'll handle it in
+ sink_new / source_new callbacks later. */
+ return PA_HOOK_OK;
- if (p2 && p2->available != PA_AVAILABLE_NO)
- pa_source_set_port(source, p2->name, false);
- else {
- /* Maybe try to switch to another profile? */
- }
- }
+ switch (port->available) {
+ case PA_AVAILABLE_YES:
+ switch_to_port(port);
+ break;
+ case PA_AVAILABLE_NO:
+ switch_from_port(port);
+ break;
+ default:
+ break;
}
return PA_HOOK_OK;
--
1.9.1
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