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metadata: trigger emission of properties

Browse source 
When the resource does add_listener, send a message to the proxy
to trigger an emission of properties.
Block the client until all properties have been notified, track
this with a ping event to the implementation.
This commit is contained in:
Wim Taymans 2020-04-20 11:42:50 +02:00
parent 209a5e101c
commit 0b68d65ebf
2 changed files with 89 additions and 40 deletions
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98
src/modules/module-metadata/metadata.c
View file

@ -33,6 +33,7 @@ struct impl {
struct pw_metadata *metadata;
struct pw_resource *resource;
struct spa_hook resource_listener;
int pending;
};
struct resource_data {
@ -42,35 +43,8 @@ struct resource_data {
struct spa_hook resource_listener;
struct spa_hook object_listener;
struct spa_hook metadata_listener;
};
static int metadata_set_property(void *object,
uint32_t subject,
const char *key,
const char *type,
const char *value)
{
struct resource_data *d = object;
struct impl *impl = d->impl;
pw_log_debug("%p", impl->metadata);
pw_metadata_set_property(impl->metadata, subject, key, type, value);
return 0;
}
static int metadata_clear(void *object)
{
struct resource_data *d = object;
struct impl *impl = d->impl;
pw_log_debug("%p", impl->metadata);
pw_metadata_clear(impl->metadata);
return 0;
}
static const struct pw_metadata_methods metadata_methods = {
PW_VERSION_METADATA_METHODS,
.set_property = metadata_set_property,
.clear = metadata_clear,
struct spa_hook impl_resource_listener;
int pong_seq;
};
#define pw_metadata_resource(r,m,v,...) \
@ -85,9 +59,10 @@ static int metadata_property(void *object,
const char *type,
const char *value)
{
struct resource_data *d = object;
pw_log_debug("%p", d->resource);
pw_metadata_resource_property(d->resource, subject, key, type, value);
struct resource_data *d = object;
struct impl *impl = d->impl;
if (impl->pending == 0 || d->pong_seq != 0)
pw_metadata_resource_property(d->resource, subject, key, type, value);
return 0;
}
@ -96,11 +71,40 @@ static const struct pw_metadata_events metadata_events = {
.property = metadata_property,
};
static int metadata_set_property(void *object,
uint32_t subject,
const char *key,
const char *type,
const char *value)
{
struct resource_data *d = object;
struct impl *impl = d->impl;
pw_metadata_set_property(impl->metadata, subject, key, type, value);
return 0;
}
static int metadata_clear(void *object)
{
struct resource_data *d = object;
struct impl *impl = d->impl;
pw_metadata_clear(impl->metadata);
return 0;
}
static const struct pw_metadata_methods metadata_methods = {
PW_VERSION_METADATA_METHODS,
.set_property = metadata_set_property,
.clear = metadata_clear,
};
static void global_unbind(void *data)
{
struct resource_data *d = data;
if (d->resource)
struct resource_data *d = data;
if (d->resource) {
spa_hook_remove(&d->metadata_listener);
spa_hook_remove(&d->impl_resource_listener);
}
}
static const struct pw_resource_events resource_events = {
@ -108,6 +112,22 @@ static const struct pw_resource_events resource_events = {
.destroy = global_unbind,
};
static void impl_resource_pong(void *data, int seq)
{
struct resource_data *d = data;
if (d->pong_seq == seq) {
pw_impl_client_set_busy(pw_resource_get_client(d->resource), false);
d->pong_seq = 0;
d->impl->pending--;
}
}
static const struct pw_resource_events impl_resource_events = {
PW_VERSION_RESOURCE_EVENTS,
.pong = impl_resource_pong,
};
static int
global_bind(void *_data, struct pw_impl_client *client, uint32_t permissions,
uint32_t version, uint32_t id)
@ -135,11 +155,21 @@ global_bind(void *_data, struct pw_impl_client *client, uint32_t permissions,
pw_resource_add_object_listener(resource,
&data->object_listener,
&metadata_methods, data);
pw_impl_client_set_busy(client, true);
/* implementation events -> resource */
pw_metadata_add_listener(impl->metadata,
&data->metadata_listener,
&metadata_events, data);
pw_resource_add_listener(impl->resource,
&data->impl_resource_listener,
&impl_resource_events, data);
data->pong_seq = pw_resource_ping(impl->resource, data->pong_seq);
impl->pending++;
return 0;
}