diff options
| author | Robin Gareus <robin@gareus.org> | 2016-11-10 01:45:00 +0100 |
|---|---|---|
| committer | Robin Gareus <robin@gareus.org> | 2016-11-10 01:45:00 +0100 |
| commit | d253d4973916e1a0f26e9b8e3ea80c50fa8c4b8d (patch) | |
| tree | c5a5b353c1b3f46742f04fec65ac7fb8bdc54f07 /libs/ardour/lv2_plugin.cc | |
| parent | ce77df24cad242e7a8f4bc4f05ab552f629956c7 (diff) | |
NO-OP, explanatory comments
Diffstat (limited to 'libs/ardour/lv2_plugin.cc')
| -rw-r--r-- | libs/ardour/lv2_plugin.cc | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc index 16ea4c57f7..017dc4e936 100644 --- a/libs/ardour/lv2_plugin.cc +++ b/libs/ardour/lv2_plugin.cc @@ -2194,27 +2194,34 @@ LV2Plugin::describe_io_port (ARDOUR::DataType dt, bool input, uint32_t id) const Plugin::IOPortDescription iod (lilv_node_as_string (name)); lilv_node_free(name); + /* get the port's pg:group */ LilvNodes* groups = lilv_port_get_value (_impl->plugin, pport, _world.groups_group); if (lilv_nodes_size (groups) > 0) { const LilvNode* group = lilv_nodes_get_first (groups); LilvNodes* grouplabel = lilv_world_find_nodes (_world.world, group, _world.rdfs_label, NULL); + /* get the name of the port-group */ if (lilv_nodes_size (grouplabel) > 0) { const LilvNode* grpname = lilv_nodes_get_first (grouplabel); iod.group_name = lilv_node_as_string (grpname); } lilv_nodes_free (grouplabel); + /* get all port designations. + * we're interested in e.g. lv2:designation pg:right */ LilvNodes* designations = lilv_port_get_value (_impl->plugin, pport, _world.lv2_designation); - if (group && lilv_nodes_size (designations) > 0) { + if (lilv_nodes_size (designations) > 0) { + /* get all pg:elements of the pg:group */ LilvNodes* group_childs = lilv_world_find_nodes (_world.world, group, _world.groups_element, NULL); if (lilv_nodes_size (group_childs) > 0) { + /* iterate over all port designations .. */ LILV_FOREACH (nodes, i, designations) { const LilvNode* designation = lilv_nodes_get (designations, i); + /* match the lv2:designation's element against the port-group's element */ LILV_FOREACH (nodes, j, group_childs) { const LilvNode* group_element = lilv_nodes_get (group_childs, j); LilvNodes* elem = lilv_world_find_nodes (_world.world, group_element, _world.lv2_designation, designation); - + /* found it. Now look up the index (channel-number) of the pg:Element */ if (lilv_nodes_size (elem) > 0) { LilvNodes* idx = lilv_world_find_nodes (_world.world, lilv_nodes_get_first (elem), _world.lv2_index, NULL); if (lilv_node_is_int (lilv_nodes_get_first (idx))) { |