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media-session: store values as json

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Save settings as jason and use a small json compatible tokenizer to
load settings instead of our own less flexible format.
Save settings with a prefix and filter out entries without prefix
Listen for changes in restore.stream metadata and update properties.
This commit is contained in:
Wim Taymans 2020-11-22 10:00:58 +01:00
parent b922f99293
commit 7ca8491be3
8 changed files with 507 additions and 128 deletions
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9
src/examples/media-session/media-session.c
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@ -1816,7 +1816,7 @@ static int state_dir(struct sm_media_session *sess)
return res;
}
int sm_media_session_load_state(struct sm_media_session *sess,
const char *name, struct pw_properties *props)
const char *name, const char *prefix, struct pw_properties *props)
{
int sfd, fd, count = 0;
FILE *f;
@ -1847,14 +1847,15 @@ int sm_media_session_load_state(struct sm_media_session *sess,
}
*k = '\0';
val = ++p;
count += pw_properties_set(props, key, val);
if (prefix == NULL || strstr(key, prefix) == key)
count += pw_properties_set(props, key, val);
}
fclose(f);
return count;
}
int sm_media_session_save_state(struct sm_media_session *sess,
const char *name, const struct pw_properties *props)
const char *name, const char *prefix, const struct pw_properties *props)
{
const struct spa_dict_item *it;
char *tmp_name;
@ -1875,6 +1876,8 @@ int sm_media_session_save_state(struct sm_media_session *sess,
f = fdopen(fd, "w");
spa_dict_for_each(it, &props->dict) {
const char *p = it->key;
if (prefix != NULL && strstr(p, prefix) != p)
continue;
while (*p) {
if (*p == ' ' || *p == '\\')
fputc('\\', f);