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authorDavid Robillard <d@drobilla.net>2011-12-16 20:15:21 +0000
committerDavid Robillard <d@drobilla.net>2011-12-16 20:15:21 +0000
commit102ba23f77650bbeaceca98c3a6539f1e637b4f7 (patch)
tree88d7032347b31ab8e79e992e2b5ab0c002aa6ccd /src/presets.c
parent1849c5d7f96db8f2dfed04208e0c49685c50d4a4 (diff)
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Support presets in Gtk UI.
git-svn-id: http://svn.drobilla.net/lad/trunk/jalv@3878 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/presets.c')
-rw-r--r--src/presets.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/presets.c b/src/presets.c
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+/*
+ Copyright 2007-2011 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "jalv-config.h"
+#include "jalv_internal.h"
+
+#define NS_LV2 "http://lv2plug.in/ns/lv2core#"
+#define NS_PSET "http://lv2plug.in/ns/ext/presets#"
+
+#define USTR(s) ((const uint8_t*)s)
+
+int
+jalv_load_presets(Jalv* jalv, PresetSink sink, void* data)
+{
+ LilvNodes* presets = lilv_plugin_get_related(jalv->plugin,
+ jalv->preset_class);
+ LILV_FOREACH(nodes, i, presets) {
+ const LilvNode* preset = lilv_nodes_get(presets, i);
+ lilv_world_load_resource(jalv->world, preset);
+ LilvNodes* titles = lilv_world_find_nodes(
+ jalv->world, preset, jalv->label_pred, NULL);
+ if (titles) {
+ const LilvNode* title = lilv_nodes_get_first(titles);
+ sink(jalv, preset, title, data);
+ lilv_nodes_free(titles);
+ } else {
+ fprintf(stderr, "Preset <%s> has no rdfs:label\n",
+ lilv_node_as_string(lilv_nodes_get(presets, i)));
+ }
+ }
+ lilv_nodes_free(presets);
+
+ return 0;
+}
+
+static inline const LilvNode*
+get_value(LilvWorld* world, const LilvNode* subject, const LilvNode* predicate)
+{
+ LilvNodes* vs = lilv_world_find_nodes(world, subject, predicate, NULL);
+ return vs ? lilv_nodes_get_first(vs) : NULL;
+}
+
+int
+jalv_apply_preset(Jalv* jalv, LilvNode* preset)
+{
+ LilvNode* lv2_port = lilv_new_uri(jalv->world, NS_LV2 "port");
+ LilvNode* lv2_symbol = lilv_new_uri(jalv->world, NS_LV2 "symbol");
+ LilvNode* pset_value = lilv_new_uri(jalv->world, NS_PSET "value");
+
+ LilvNodes* ports = lilv_world_find_nodes(
+ jalv->world, preset, lv2_port, NULL);
+ LILV_FOREACH(nodes, i, ports) {
+ const LilvNode* port = lilv_nodes_get(ports, i);
+ const LilvNode* symbol = get_value(jalv->world, port, lv2_symbol);
+ const LilvNode* value = get_value(jalv->world, port, pset_value);
+ if (!symbol) {
+ fprintf(stderr, "error: Preset port missing symbol.\n");
+ } else if (!value) {
+ fprintf(stderr, "error: Preset port missing value.\n");
+ } else if (!lilv_node_is_float(value) && !lilv_node_is_int(value)) {
+ fprintf(stderr, "error: Preset port value is not a number.\n");
+ } else {
+ const char* sym = lilv_node_as_string(symbol);
+ struct Port* p = jalv_port_by_symbol(jalv, sym);
+ if (p) {
+ const float fvalue = lilv_node_as_float(value);
+ jalv_ui_write(jalv, p->index, sizeof(float), 0, &fvalue);
+ } else {
+ fprintf(stderr, "error: Preset port `%s' is missing\n", sym);
+ }
+ }
+ }
+ lilv_nodes_free(ports);
+
+ lilv_node_free(pset_value);
+ lilv_node_free(preset);
+ lilv_node_free(lv2_symbol);
+ lilv_node_free(lv2_port);
+
+ return 0;
+}