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pulse-server: keep track of seq in pw_*_enum_params

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If multiple async enum param are running at the same time, take results
only from the latest one.
This commit is contained in:
Pauli Virtanen 2021-04-25 20:42:03 +03:00
parent 462c50acd6
commit 20c8d7b29e
1 changed files with 46 additions and 9 deletions
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55
src/modules/module-protocol-pulse/manager.c
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@ -26,8 +26,11 @@
#include <spa/pod/iter.h>
#include <spa/pod/parser.h>
#include <spa/utils/result.h>
#include <extensions/metadata.h>
#define MAX_PARAMS 32
#define manager_emit_sync(m) spa_hook_list_call(&m->hooks, struct pw_manager_events, sync, 0)
#define manager_emit_added(m,o) spa_hook_list_call(&m->hooks, struct pw_manager_events, added, 0, o)
#define manager_emit_updated(m,o) spa_hook_list_call(&m->hooks, struct pw_manager_events, updated, 0, o)
@ -72,6 +75,8 @@ struct object {
struct spa_hook proxy_listener;
struct spa_hook object_listener;
int param_seq[MAX_PARAMS];
struct spa_list data_list;
};
@ -97,7 +102,8 @@ static uint32_t clear_params(struct spa_list *param_list, uint32_t id)
return count;
}
static struct pw_manager_param *add_param(struct spa_list *params, uint32_t id, const struct spa_pod *param)
static struct pw_manager_param *add_param(struct spa_list *params,
int seq, int *param_seq, uint32_t id, const struct spa_pod *param)
{
struct pw_manager_param *p;
@ -109,6 +115,19 @@ static struct pw_manager_param *add_param(struct spa_list *params, uint32_t id,
id = SPA_POD_OBJECT_ID(param);
}
if (id >= MAX_PARAMS) {
pw_log_error("too big param id %d", id);
errno = EINVAL;
return NULL;
}
if (seq != param_seq[id]) {
pw_log_debug("ignoring param %d, seq:%d != current_seq:%d",
id, seq, param_seq[id]);
errno = EBUSY;
return NULL;
}
p = malloc(sizeof(*p) + (param != NULL ? SPA_POD_SIZE(param) : 0));
if (p == NULL)
return NULL;
@ -287,11 +306,17 @@ static void device_event_info(void *object, const struct pw_device_info *info)
if (info->change_mask & PW_DEVICE_CHANGE_MASK_PARAMS) {
for (i = 0; i < info->n_params; i++) {
uint32_t id = info->params[i].id;
int res;
if (info->params[i].user == 0)
continue;
info->params[i].user = 0;
if (id >= MAX_PARAMS) {
pw_log_error("too big param id %d", id);
continue;
}
switch (id) {
case SPA_PARAM_EnumProfile:
case SPA_PARAM_Profile:
@ -301,12 +326,14 @@ static void device_event_info(void *object, const struct pw_device_info *info)
case SPA_PARAM_Route:
break;
}
add_param(&o->pending_list, id, NULL);
add_param(&o->pending_list, o->param_seq[id], o->param_seq, id, NULL);
if (!(info->params[i].flags & SPA_PARAM_INFO_READ))
continue;
pw_device_enum_params((struct pw_device*)o->this.proxy,
0, id, 0, -1, NULL);
res = pw_device_enum_params((struct pw_device*)o->this.proxy,
++o->param_seq[id], id, 0, -1, NULL);
if (SPA_RESULT_IS_ASYNC(res))
o->param_seq[id] = res;
}
}
if (changed) {
@ -343,7 +370,9 @@ static void device_event_param(void *object, int seq,
struct manager *m = o->manager;
struct pw_manager_param *p;
p = add_param(&o->pending_list, id, param);
p = add_param(&o->pending_list, seq, o->param_seq, id, param);
if (p == NULL)
return;
if (id == SPA_PARAM_Route && !has_param(&o->this.param_list, p)) {
uint32_t id, device;
@ -400,18 +429,26 @@ static void node_event_info(void *object, const struct pw_node_info *info)
if (info->change_mask & PW_NODE_CHANGE_MASK_PARAMS) {
for (i = 0; i < info->n_params; i++) {
uint32_t id = info->params[i].id;
int res;
if (info->params[i].user == 0)
continue;
info->params[i].user = 0;
if (id >= MAX_PARAMS) {
pw_log_error("too big param id %d", id);
continue;
}
changed++;
add_param(&o->pending_list, id, NULL);
add_param(&o->pending_list, o->param_seq[id], o->param_seq, id, NULL);
if (!(info->params[i].flags & SPA_PARAM_INFO_READ))
continue;
pw_node_enum_params((struct pw_node*)o->this.proxy,
0, id, 0, -1, NULL);
res = pw_node_enum_params((struct pw_node*)o->this.proxy,
++o->param_seq[id], id, 0, -1, NULL);
if (SPA_RESULT_IS_ASYNC(res))
o->param_seq[id] = res;
}
}
if (changed) {
@ -425,7 +462,7 @@ static void node_event_param(void *object, int seq,
const struct spa_pod *param)
{
struct object *o = object;
add_param(&o->pending_list, id, param);
add_param(&o->pending_list, seq, o->param_seq, id, param);
}
static const struct pw_node_events node_events = {