[pulseaudio-discuss] [PATCH] card-restore: Add the ability to save and restore the latency offset.
poljar (Damir Jelić)
poljarinho at gmail.com
Mon Jul 2 05:18:22 PDT 2012
From: "poljar (Damir Jelić)" <poljarinho at gmail.com>
module-card-restore now saves the latency offsets.
This change includes a entry version bump.
The entry now consists of a port count and a port name and offset for
every port that belongs to the relevant card.
---
src/modules/module-card-restore.c | 122 ++++++++++++++++++++++++++++++++++----
1 file changed, 109 insertions(+), 13 deletions(-)
diff --git a/src/modules/module-card-restore.c b/src/modules/module-card-restore.c
index 1079a72..b21aaae 100644
--- a/src/modules/module-card-restore.c
+++ b/src/modules/module-card-restore.c
@@ -68,11 +68,18 @@ struct userdata {
pa_database *database;
};
-#define ENTRY_VERSION 1
+#define ENTRY_VERSION 2
+
+struct port_info {
+ char *name;
+ int64_t offset;
+};
struct entry {
uint8_t version;
char *profile;
+ uint32_t port_count;
+ struct port_info *port_info;
};
static void save_time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
@@ -107,6 +114,16 @@ static void entry_free(struct entry* e) {
pa_assert(e);
pa_xfree(e->profile);
+
+ if (e->port_count > 0) {
+ unsigned i;
+ for (i = 0; i < e->port_count; i++)
+ pa_xfree(e->port_info[i].name);
+ }
+
+ if (e->port_info)
+ pa_xfree(e->port_info);
+
pa_xfree(e);
}
@@ -114,6 +131,7 @@ static pa_bool_t entry_write(struct userdata *u, const char *name, const struct
pa_tagstruct *t;
pa_datum key, data;
pa_bool_t r;
+ unsigned i;
pa_assert(u);
pa_assert(name);
@@ -122,6 +140,12 @@ static pa_bool_t entry_write(struct userdata *u, const char *name, const struct
t = pa_tagstruct_new(NULL, 0);
pa_tagstruct_putu8(t, e->version);
pa_tagstruct_puts(t, e->profile);
+ pa_tagstruct_putu32(t, e->port_count);
+
+ for (i = 0; i < e->port_count; i++) {
+ pa_tagstruct_puts(t, e->port_info[i].name);
+ pa_tagstruct_puts64(t, e->port_info[i].offset);
+ }
key.data = (char *) name;
key.size = strlen(name);
@@ -201,6 +225,30 @@ static struct entry* entry_read(struct userdata *u, const char *name) {
e->profile = pa_xstrdup(profile);
+ if (e->version >= 2) {
+ const char *port_name = NULL;
+ int64_t port_offset = 0;
+ unsigned i;
+
+ if (pa_tagstruct_getu32(t, &e->port_count) < 0)
+ goto fail;
+
+ if (e->port_count > 0) {
+ e->port_info = pa_xnew(struct port_info, e->port_count);
+
+ for (i = 0; i < e->port_count; i++) {
+ if (pa_tagstruct_gets(t, &port_name) < 0 ||
+ pa_tagstruct_gets64(t, &port_offset) < 0) {
+ e->port_count = i;
+ goto fail;
+ }
+
+ e->port_info[i].name = pa_xstrdup(port_name);
+ e->port_info[i].offset = port_offset;
+ }
+ }
+ }
+
if (!pa_tagstruct_eof(t))
goto fail;
@@ -238,6 +286,7 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
struct userdata *u = userdata;
struct entry *entry, *old;
pa_card *card;
+ unsigned i = 0;
pa_assert(c);
pa_assert(u);
@@ -249,15 +298,44 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
if (!(card = pa_idxset_get_by_index(c->cards, idx)))
return;
+ entry = entry_new();
+
if (!card->save_profile)
- return;
+ entry->profile = pa_xstrdup("");
+ else
+ entry->profile = pa_xstrdup(card->active_profile->name);
- entry = entry_new();
- entry->profile = pa_xstrdup(card->active_profile->name);
+ entry->port_count = pa_hashmap_size(card->ports);
+
+ if (entry->port_count > 0) {
+ void *state;
+ pa_device_port *p;
+
+ entry->port_info = pa_xnew(struct port_info, entry->port_count);
+
+ PA_HASHMAP_FOREACH(p, card->ports, state) {
+ entry->port_info[i].name = pa_xstrdup(p->name);
+ entry->port_info[i].offset = p->latency_offset;
+ i++;
+ }
+ }
if ((old = entry_read(u, card->name))) {
+ bool dirty = false;
- if (pa_streq(old->profile, entry->profile)) {
+ if (!pa_streq(old->profile, entry->profile) &&
+ card->save_profile)
+ dirty = true;
+
+ else
+ for (i = 0; i < old->port_count; i++)
+ if (!pa_streq(old->port_info[i].name, entry->port_info[i].name) ||
+ old->port_info[i].offset != entry->port_info[i].offset) {
+ dirty = true;
+ break;
+ }
+
+ if (!dirty) {
entry_free(old);
entry_free(entry);
return;
@@ -266,7 +344,10 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
entry_free(old);
}
- pa_log_info("Storing profile for card %s.", card->name);
+ if (!card->save_profile)
+ pa_log_info("Storing profile and port latency offsets for card %s.", card->name);
+ else
+ pa_log_info("Port latency offsets for card %s.", card->name);
if (entry_write(u, card->name, entry))
trigger_save(u);
@@ -279,14 +360,29 @@ static pa_hook_result_t card_new_hook_callback(pa_core *c, pa_card_new_data *new
pa_assert(new_data);
- if ((e = entry_read(u, new_data->name)) && e->profile[0]) {
+ if ((e = entry_read(u, new_data->name))) {
+ unsigned i;
+ pa_device_port *p;
+
+ if (e->profile[0]) {
+ if (!new_data->active_profile) {
+ pa_log_info("Restoring profile for card %s.", new_data->name);
+ pa_card_new_data_set_profile(new_data, e->profile);
+ new_data->save_profile = TRUE;
- if (!new_data->active_profile) {
- pa_log_info("Restoring profile for card %s.", new_data->name);
- pa_card_new_data_set_profile(new_data, e->profile);
- new_data->save_profile = TRUE;
- } else
- pa_log_debug("Not restoring profile for card %s, because already set.", new_data->name);
+ } else
+ pa_log_debug("Not restoring profile for card %s, because already set.", new_data->name);
+ }
+
+ /* Always restore the latency offsets because their
+ * initial value is always 0 */
+
+ pa_log_info("Restoring port latency offsets for card %s.", new_data->name);
+ for (i = 0; i < e->port_count; i++) {
+ p = pa_hashmap_get(new_data->ports, e->port_info[i].name);
+ if (p)
+ p->latency_offset = e->port_info[i].offset;
+ }
entry_free(e);
}
--
1.7.11.1
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