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json: add and use spa_json_str_object_find()

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Parse a string as a json object and copy the value with key as a string.
This commit is contained in:
Wim Taymans 2024-09-16 13:12:05 +02:00
parent 1fb13fd0be
commit b5cccdb382
6 changed files with 68 additions and 86 deletions
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21
pipewire-alsa/alsa-plugins/ctl_pipewire.c
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@ -1019,23 +1019,6 @@ static const struct global_info node_info = {
};
/** metadata */
static int json_object_find(const char *obj, const char *key, char *value, size_t len)
{
struct spa_json it[1];
const char *v;
int l, kl = strlen(key) + 3;
char k[kl];
if (spa_json_begin_object(&it[0], obj, strlen(obj)) <= 0)
return -EINVAL;
while ((l = spa_json_object_next(&it[0], k, kl, &v)) > 0) {
if (spa_streq(k, key))
return spa_json_parse_stringn(v, l, value, len);
}
return -ENOENT;
}
static int metadata_property(void *data,
uint32_t subject,
const char *key,
@ -1048,14 +1031,14 @@ static int metadata_property(void *data,
if (subject == PW_ID_CORE) {
if (key == NULL || spa_streq(key, "default.audio.sink")) {
if (value == NULL ||
json_object_find(value, "name",
spa_json_str_object_find(value, strlen(value), "name",
ctl->default_sink, sizeof(ctl->default_sink)) < 0)
ctl->default_sink[0] = '\0';
pw_log_debug("found default sink: %s", ctl->default_sink);
}
if (key == NULL || spa_streq(key, "default.audio.source")) {
if (value == NULL ||
json_object_find(value, "name",
spa_json_str_object_find(value, strlen(value), "name",
ctl->default_source, sizeof(ctl->default_source)) < 0)
ctl->default_source[0] = '\0';
pw_log_debug("found default source: %s", ctl->default_source);