static int
_jack_init(prog_t *handle, const char *id)
{
jack_options_t opts = JackNullOption | JackNoStartServer;
if(handle->server_name)
opts |= JackServerName;
if(handle->session_id)
opts |= JackSessionID;
jack_status_t status;
if(!(handle->client = jack_client_open(id, opts, &status,
handle->server_name ? handle->server_name : handle->session_id,
handle->server_name ? handle->session_id : NULL)))
{
return -1;
}
//TODO check status
// set client pretty name
#if defined(JACK_HAS_METADATA_API)
jack_uuid_t uuid;
const char *client_name = jack_get_client_name(handle->client);
const char *uuid_str = jack_get_uuid_for_client_name(handle->client, client_name);
if(uuid_str)
jack_uuid_parse(uuid_str, &uuid);
else
jack_uuid_clear(&uuid);
if(!jack_uuid_empty(uuid))
{
jack_set_property(handle->client, uuid,
JACK_METADATA_PRETTY_NAME, "Synthpod", "text/plain");
}
#endif
// set client process callback
if(jack_set_process_callback(handle->client, _process, handle))
return -1;
if(jack_set_session_callback(handle->client, _session, handle))
return -1;
if(jack_set_sample_rate_callback(handle->client, _sample_rate, handle))
return -1;
if(jack_set_buffer_size_callback(handle->client, _buffer_size, handle))
return -1;
jack_on_shutdown(handle->client, _shutdown, handle);
jack_set_xrun_callback(handle->client, _xrun, handle);
return 0;
}
static void
_jack_deinit(prog_t *handle)
{
if(handle->client)
{
// remove client properties
#if defined(JACK_HAS_METADATA_API)
jack_uuid_t uuid;
const char *client_name = jack_get_client_name(handle->client);
const char *uuid_str = jack_get_uuid_for_client_name(handle->client, client_name);
if(uuid_str)
jack_uuid_parse(uuid_str, &uuid);
else
jack_uuid_clear(&uuid);
if(!jack_uuid_empty(uuid))
jack_remove_properties(handle->client, uuid);
#endif
jack_deactivate(handle->client);
jack_client_close(handle->client);
handle->client = NULL;
}
}
int
jack_get_all_properties (jack_description_t** descriptions)
{
DBT key;
DBT data;
DBC* cursor;
int ret;
size_t dcnt = 0;
size_t dsize = 0;
size_t n = 0;
jack_description_t* desc = NULL;
jack_uuid_t uuid;
jack_description_t* current_desc = NULL;
jack_property_t* current_prop = NULL;
size_t len1, len2;
if (jack_property_init (NULL)) {
return -1;
}
if ((ret = db->cursor (db, NULL, &cursor, 0)) != 0) {
jack_error ("Cannot create cursor for metadata search (%s)", db_strerror (ret));
return -1;
}
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
data.flags = DB_DBT_MALLOC;
dsize = 8; /* initial guess at number of descriptions we need */
dcnt = 0;
desc = (jack_description_t*) malloc (dsize * sizeof (jack_description_t));
while ((ret = cursor->get(cursor, &key, &data, DB_NEXT)) == 0) {
/* require 2 extra chars (data+null) for key,
which is composed of UUID str plus a key name
*/
if (key.size < JACK_UUID_STRING_SIZE + 2) {
if (data.size > 0) {
free (data.data);
}
continue;
}
if (jack_uuid_parse (key.data, uuid) != 0) {
continue;
}
/* do we have an existing description for this UUID */
for (n = 0; n < dcnt ; ++n) {
if (jack_uuid_compare (uuid, desc[n].subject) == 0) {
break;
}
}
if (n == dcnt) {
/* we do not have an existing description, so grow the array */
if (dcnt == dsize) {
dsize *= 2;
desc = (jack_description_t*) realloc (desc, sizeof (jack_description_t) * dsize);
}
/* initialize */
desc[n].property_size = 0;
desc[n].property_cnt = 0;
desc[n].properties = NULL;
/* set up UUID */
jack_uuid_copy (desc[n].subject, uuid);
dcnt++;
}
current_desc = &desc[n];
/* see if there is room for the new property or if we need to realloc
*/
if (current_desc->property_cnt == current_desc->property_size) {
if (current_desc->property_size == 0) {
current_desc->property_size = 8;
} else {
current_desc->property_size *= 2;
}
current_desc->properties = (jack_property_t*) realloc (current_desc->properties, sizeof (jack_property_t) * current_desc->property_size);
}
current_prop = ¤t_desc->properties[current_desc->property_cnt++];
/* copy key (without leading UUID) */
len1 = key.size - JACK_UUID_STRING_SIZE;
current_prop->key = malloc (len1);
memcpy ((char*) current_prop->key, key.data + JACK_UUID_STRING_SIZE, len1);
/* copy data (which contains 1 or 2 null terminated strings, the value
and optionally a MIME type.
*/
len1 = strlen (data.data) + 1;
current_prop->data = (char *) malloc (len1);
memcpy ((char*) current_prop->data, data.data, len1);
if (len1 < data.size) {
len2 = strlen (data.data+len1) + 1;
current_prop->type= (char *) malloc (len2);
memcpy ((char*) current_prop->type, data.data+len1, len2);
} else {
/* no type specified, assume default */
current_prop->type = NULL;
}
if (data.size) {
free (data.data);
}
}
cursor->close (cursor);
(*descriptions) = desc;
return dcnt;
}