[PATCH RFC 2/4] card-restore: Save/restore the volume for the ports.

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The card-restore module now saves and restores the volume per port.
This change includes a entry version bump.

BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=55262
---
 src/modules/module-card-restore.c | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/src/modules/module-card-restore.c b/src/modules/module-card-restore.c
index 643e074..1f1c89f 100644
--- a/src/modules/module-card-restore.c
+++ b/src/modules/module-card-restore.c
@@ -68,11 +68,12 @@ struct userdata {
     pa_database *database;
 };
 
-#define ENTRY_VERSION 2
+#define ENTRY_VERSION 3
 
 struct port_info {
     char *name;
     int64_t offset;
+    pa_cvolume volume;
 };
 
 struct entry {
@@ -145,6 +146,7 @@ static pa_bool_t entry_write(struct userdata *u, const char *name, const struct
     PA_HASHMAP_FOREACH(p_info, e->ports, state) {
         pa_tagstruct_puts(t, p_info->name);
         pa_tagstruct_puts64(t, p_info->offset);
+        pa_tagstruct_put_cvolume(t, &p_info->volume);
     }
 
     key.data = (char *) name;
@@ -232,9 +234,11 @@ static struct entry* entry_read(struct userdata *u, const char *name) {
         uint32_t port_count = 0;
         const char *port_name = NULL;
         int64_t port_offset = 0;
+        pa_cvolume port_volume;
         struct port_info *p_info;
         unsigned i;
 
+        pa_cvolume_init(&port_volume);
         if (pa_tagstruct_getu32(t, &port_count) < 0)
             goto fail;
 
@@ -242,12 +246,14 @@ static struct entry* entry_read(struct userdata *u, const char *name) {
             if (pa_tagstruct_gets(t, &port_name) < 0 ||
                 !port_name ||
                 pa_hashmap_get(e->ports, port_name) ||
-                pa_tagstruct_gets64(t, &port_offset) < 0)
+                pa_tagstruct_gets64(t, &port_offset) < 0 ||
+                (e->version >= 3 && pa_tagstruct_get_cvolume(t, &port_volume) < 0))
                 goto fail;
 
             p_info = pa_xnew(struct port_info, 1);
             p_info->name = pa_xstrdup(port_name);
             p_info->offset = port_offset;
+            p_info->volume = port_volume;
 
             pa_assert_se(pa_hashmap_put(e->ports, p_info->name, p_info) >= 0);
         }
@@ -313,6 +319,7 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
         p_info = pa_xnew(struct port_info, 1);
         p_info->name = pa_xstrdup(p->name);
         p_info->offset = p->latency_offset;
+        p_info->volume = p->volume;
 
         pa_assert_se(pa_hashmap_put(entry->ports, p_info->name, p_info) >= 0);
     }
@@ -332,7 +339,8 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
 
             PA_HASHMAP_FOREACH(old_p_info, old->ports, state) {
                 if ((p_info = pa_hashmap_get(entry->ports, old_p_info->name))) {
-                    if (p_info->offset != old_p_info->offset) {
+                    if (p_info->offset != old_p_info->offset ||
+                        !pa_cvolume_equal(&p_info->volume, &old_p_info->volume)) {
                         dirty = true;
                         break;
                     }
@@ -354,9 +362,9 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
     }
 
     if (card->save_profile)
-        pa_log_info("Storing profile and port latency offsets for card %s.", card->name);
+        pa_log_info("Storing profile and port volume and latency offsets for card %s.", card->name);
     else
-        pa_log_info("Storing port latency offsets for card %s.", card->name);
+        pa_log_info("Storing port volume and latency offsets for card %s.", card->name);
 
     if (entry_write(u, card->name, entry))
         trigger_save(u);
@@ -369,6 +377,7 @@ static pa_hook_result_t card_new_hook_callback(pa_core *c, pa_card_new_data *new
     void *state;
     pa_device_port *p;
     struct port_info *p_info;
+    char buf[PA_CVOLUME_SNPRINT_MAX];
 
     pa_assert(new_data);
 
@@ -385,14 +394,17 @@ static pa_hook_result_t card_new_hook_callback(pa_core *c, pa_card_new_data *new
             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 */
+    /* Always restore the latency offsets and volume because their
+     * initial value is always 0 and PA_VOLUME_INVALID*/
 
-    pa_log_info("Restoring port latency offsets for card %s.", new_data->name);
+    pa_log_info("Restoring port volume and latency offsets for card %s.", new_data->name);
 
     PA_HASHMAP_FOREACH(p_info, e->ports, state)
-        if ((p = pa_hashmap_get(new_data->ports, p_info->name)))
+        if ((p = pa_hashmap_get(new_data->ports, p_info->name))) {
             p->latency_offset = p_info->offset;
+            p->volume = p_info->volume;
+            pa_log_info("Restored volume: for port %s - %s", p->name, pa_cvolume_snprint(buf, PA_CVOLUME_SNPRINT_MAX, &p_info->volume));
+        }
 
     entry_free(e);
 
-- 
1.8.1



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