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impl-link: add an active state

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Avoid emission of events for each state change.
Add an active state and aim to only emit events for paused<->active
state changed or error.
This commit is contained in:
Wim Taymans 2020-10-09 16:43:31 +02:00
parent f67cbd7444
commit 391fa81fa8
3 changed files with 11 additions and 4 deletions
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12
src/pipewire/impl-link.c
View file

@ -112,7 +112,10 @@ static void link_update_state(struct pw_impl_link *link, enum pw_link_state stat
pw_impl_link_emit_state_changed(link, old, state, error);
link->info.change_mask |= PW_LINK_CHANGE_MASK_STATE;
info_changed(link);
if (state == PW_LINK_STATE_ERROR ||
state == PW_LINK_STATE_PAUSED ||
state == PW_LINK_STATE_ACTIVE)
info_changed(link);
if (state == PW_LINK_STATE_ERROR && link->global) {
struct pw_resource *resource;
@ -331,10 +334,9 @@ static int do_negotiate(struct pw_impl_link *this)
free(this->info.format);
this->info.format = format;
if (changed) {
if (changed)
this->info.change_mask |= PW_LINK_CHANGE_MASK_FORMAT;
info_changed(this);
}
pw_log_debug(NAME" %p: result %d", this, res);
return res;
@ -551,6 +553,7 @@ int pw_impl_link_activate(struct pw_impl_link *this)
impl->activated = true;
pw_log_info("(%s) activated", this->name);
link_update_state(this, PW_LINK_STATE_ACTIVE, 0, NULL);
return 0;
}
@ -719,6 +722,7 @@ int pw_impl_link_deactivate(struct pw_impl_link *this)
impl->io_set = false;
impl->activated = false;
pw_log_info("(%s) deactivated", this->name);
link_update_state(this, PW_LINK_STATE_PAUSED, 0, NULL);
return 0;
}

2
src/pipewire/introspect.c
View file

@ -78,6 +78,8 @@ const char *pw_link_state_as_string(enum pw_link_state state)
return "allocating";
case PW_LINK_STATE_PAUSED:
return "paused";
case PW_LINK_STATE_ACTIVE:
return "active";
}
return "invalid-state";
}

1
src/pipewire/link.h
View file

@ -47,6 +47,7 @@ enum pw_link_state {
PW_LINK_STATE_NEGOTIATING = 1, /**< the link is negotiating formats */
PW_LINK_STATE_ALLOCATING = 2, /**< the link is allocating buffers */
PW_LINK_STATE_PAUSED = 3, /**< the link is paused */
PW_LINK_STATE_ACTIVE = 4, /**< the link is active */
};
/** Convert a \ref pw_link_state to a readable string \memberof pw_link */