diff options
Diffstat (limited to 'src/control.c')
| -rw-r--r-- | src/control.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/control.c b/src/control.c new file mode 100644 index 0000000..1921785 --- /dev/null +++ b/src/control.c @@ -0,0 +1,129 @@ +/* + Copyright 2007-2015 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_internal.h" + +int +scale_point_cmp(const ScalePoint* a, const ScalePoint* b) +{ + if (a->value < b->value) { + return -1; + } else if (a->value == b->value) { + return 0; + } + return 1; +} + +ControlID* +new_port_control(Jalv* jalv, uint32_t index) +{ + struct Port* port = &jalv->ports[index]; + const LilvPort* lport = port->lilv_port; + const LilvPlugin* plug = jalv->plugin; + const JalvNodes* nodes = &jalv->nodes; + + ControlID* id = (ControlID*)calloc(1, sizeof(ControlID)); + id->jalv = jalv; + id->type = PORT; + id->index = index; + id->is_toggle = lilv_port_has_property(plug, lport, nodes->lv2_toggled); + id->is_integer = lilv_port_has_property(plug, lport, nodes->lv2_integer); + id->is_enumeration = lilv_port_has_property(plug, lport, nodes->lv2_enumeration); + id->is_logarithmic = lilv_port_has_property(plug, lport, nodes->pprops_logarithmic); + + lilv_port_get_range(plug, lport, &id->def, &id->min, &id->max); + if (lilv_port_has_property(plug, lport, jalv->nodes.lv2_sampleRate)) { + /* Adjust range for lv2:sampleRate controls */ + if (lilv_node_is_float(id->min)) { + const float min = lilv_node_as_float(id->min) * jalv->sample_rate; + lilv_node_free(id->min); + id->min = lilv_new_float(jalv->world, min); + } + if (lilv_node_is_float(id->max)) { + const float max = lilv_node_as_float(id->max) * jalv->sample_rate; + lilv_node_free(id->max); + id->max = lilv_new_float(jalv->world, max); + } + } + + return id; +} + +static bool +has_range(Jalv* jalv, const LilvNode* subject, const char* range_uri) +{ + LilvNode* range = lilv_new_uri(jalv->world, range_uri); + const bool result = lilv_world_ask( + jalv->world, subject, jalv->nodes.rdfs_range, range); + lilv_node_free(range); + return result; +} + +ControlID* +new_property_control(Jalv* jalv, const LilvNode* property) +{ + ControlID* id = (ControlID*)calloc(1, sizeof(ControlID)); + id->jalv = jalv; + id->type = PROPERTY; + id->property = jalv->map.map(jalv, lilv_node_as_uri(property)); + + id->min = lilv_world_get(jalv->world, property, jalv->nodes.lv2_minimum, NULL); + id->max = lilv_world_get(jalv->world, property, jalv->nodes.lv2_maximum, NULL); + id->def = lilv_world_get(jalv->world, property, jalv->nodes.lv2_default, NULL); + + const char* const types[] = { + LV2_ATOM__Int, LV2_ATOM__Long, LV2_ATOM__Float, LV2_ATOM__Double, + LV2_ATOM__Bool, LV2_ATOM__String, LV2_ATOM__Path, NULL + }; + + for (const char*const* t = types; *t; ++t) { + if (has_range(jalv, property, *t)) { + id->value_type = jalv->map.map(jalv, *t); + break; + } + } + + id->is_toggle = (id->value_type == jalv->forge.Bool); + id->is_integer = (id->value_type == jalv->forge.Int || + id->value_type == jalv->forge.Long); + + if (!id->value_type) { + fprintf(stderr, "Unknown value type for property <%s>\n", + lilv_node_as_string(property)); + } + + return id; +} + +void +add_control(Controls* controls, ControlID* control) +{ + controls->controls = realloc( + controls->controls, (controls->n_controls + 1) * sizeof(ControlID*)); + controls->controls[controls->n_controls++] = control; +} + +ControlID* +get_property_control(const Controls* controls, LV2_URID property) +{ + for (size_t i = 0; i < controls->n_controls; ++i) { + if (controls->controls[i]->property == property) { + return controls->controls[i]; + } + } + + return NULL; +} |