[pulseaudio-discuss] [PATCH] card-restore: Add the ability to save and restore the latency offset.
poljar (Damir Jelić)
poljarinho at gmail.com
Wed Jul 4 15:57:05 PDT 2012
Hey Tanu.
I've changed the patch to use a hash map. I hope the rest of the changes
also make sense.
Sorry about the increased sloppiness.
Thanks, poljar.
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>From 35bfadedefd2bc1acad305d9c1616931035313bb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?"poljar=20(Damir=20Jeli=C4=87)"?= <poljarinho at gmail.com>
Date: Wed, 27 Jun 2012 22:55:35 +0200
Subject: [PATCH] card-restore: Add the ability to save and restore the
latency offset.
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 | 120 ++++++++++++++++++++++++++++++++++----
1 file changed, 110 insertions(+), 10 deletions(-)
diff --git a/src/modules/module-card-restore.c b/src/modules/module-card-restore.c
index 1079a72..c2c9a84 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;
+ pa_hashmap *port_info;
};
static void save_time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
@@ -100,13 +107,21 @@ static void trigger_save(struct userdata *u) {
static struct entry* entry_new(void) {
struct entry *r = pa_xnew0(struct entry, 1);
r->version = ENTRY_VERSION;
+ r->port_info = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
return r;
}
+static void port_info_free(struct port_info *p_info, void *userdata) {
+ pa_xfree(p_info->name);
+ pa_xfree(p_info);
+}
+
static void entry_free(struct entry* e) {
pa_assert(e);
pa_xfree(e->profile);
+ pa_hashmap_free(e->port_info, (pa_free2_cb_t) port_info_free, NULL);
+
pa_xfree(e);
}
@@ -114,6 +129,8 @@ 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;
+ void *state;
+ struct port_info *p_info;
pa_assert(u);
pa_assert(name);
@@ -122,6 +139,12 @@ 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);
+
+ PA_HASHMAP_FOREACH(p_info, e->port_info, state) {
+ pa_tagstruct_puts(t, p_info->name);
+ pa_tagstruct_puts64(t, p_info->offset);
+ }
key.data = (char *) name;
key.size = strlen(name);
@@ -201,6 +224,28 @@ 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;
+ struct port_info *p_info;
+ unsigned i;
+
+ if (pa_tagstruct_getu32(t, &e->port_count) < 0)
+ goto fail;
+
+ for (i = 0; i < e->port_count; i++) {
+ if (pa_tagstruct_gets(t, &port_name) < 0 ||
+ pa_tagstruct_gets64(t, &port_offset) < 0)
+ goto fail;
+
+ p_info = pa_xnew(struct port_info, 1);
+ p_info->name = pa_xstrdup(port_name);
+ p_info->offset = port_offset;
+
+ pa_assert_se(pa_hashmap_put(e->port_info, p_info->name, p_info) >= 0);
+ }
+ }
+
if (!pa_tagstruct_eof(t))
goto fail;
@@ -237,7 +282,10 @@ fail:
static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
struct userdata *u = userdata;
struct entry *entry, *old;
+ void *state;
pa_card *card;
+ pa_device_port *p;
+ struct port_info *p_info;
pa_assert(c);
pa_assert(u);
@@ -249,15 +297,49 @@ 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;
- if (!card->save_profile)
- return;
-
entry = entry_new();
- entry->profile = pa_xstrdup(card->active_profile->name);
+
+ if (card->save_profile)
+ entry->profile = pa_xstrdup(card->active_profile->name);
+
+ entry->port_count = pa_hashmap_size(card->ports);
+
+ PA_HASHMAP_FOREACH(p, card->ports, state) {
+ p_info = pa_xnew(struct port_info, 1);
+ p_info->name = pa_xstrdup(p->name);
+ p_info->offset = p->latency_offset;
+
+ pa_assert_se(pa_hashmap_put(entry->port_info, p_info->name, p_info) >= 0);
+ }
if ((old = entry_read(u, card->name))) {
+ bool dirty = false;
+
+ if (!card->save_profile)
+ entry->profile = pa_xstrdup(old->profile);
+
+ if (!pa_streq(old->profile, entry->profile) ||
+ old->port_count != entry->port_count)
+ dirty = true;
+
+ else {
+ struct port_info *old_p_info;
+
+ PA_HASHMAP_FOREACH(old_p_info, old->port_info, state) {
+ if ((p_info = pa_hashmap_get(entry->port_info, old_p_info->name))) {
+ if (p_info->offset != old_p_info->offset) {
+ dirty = true;
+ break;
+ }
+
+ } else {
+ dirty = true;
+ break;
+ }
+ }
+ }
- if (pa_streq(old->profile, entry->profile)) {
+ if (!dirty) {
entry_free(old);
entry_free(entry);
return;
@@ -266,7 +348,10 @@ 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("Storing port latency offsets for card %s.", card->name);
if (entry_write(u, card->name, entry))
trigger_save(u);
@@ -276,21 +361,36 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
static pa_hook_result_t card_new_hook_callback(pa_core *c, pa_card_new_data *new_data, struct userdata *u) {
struct entry *e;
+ void *state;
+ pa_device_port *p;
+ struct port_info *p_info;
pa_assert(new_data);
- if ((e = entry_read(u, new_data->name)) && e->profile[0]) {
+ if (!(e = entry_read(u, new_data->name)))
+ return PA_HOOK_OK;
+ 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;
+
} else
pa_log_debug("Not restoring profile for card %s, because already set.", new_data->name);
-
- entry_free(e);
}
+ /* 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);
+
+ PA_HASHMAP_FOREACH(p_info, e->port_info, state)
+ if ((p = pa_hashmap_get(new_data->ports, p_info->name)))
+ p->latency_offset = p_info->offset;
+
+ entry_free(e);
+
return PA_HOOK_OK;
}
--
1.7.11.1
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