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Implement describe_io_port() API for LV2

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This commit is contained in:
Robin Gareus 2016-04-03 18:28:59 +02:00
parent b23ef97845
commit 650f2802a0
2 changed files with 55 additions and 0 deletions
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2
libs/ardour/ardour/lv2_plugin.h
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@ -79,6 +79,8 @@ class LIBARDOUR_API LV2Plugin : public ARDOUR::Plugin, public ARDOUR::Workee
int get_parameter_descriptor (uint32_t which, ParameterDescriptor&) const;
uint32_t nth_parameter (uint32_t port, bool& ok) const;
IOPortDescription describe_io_port (DataType dt, bool input, uint32_t id);
const void* extension_data (const char* uri) const;
const void* c_plugin();

53
libs/ardour/lv2_plugin.cc
View File

@ -132,6 +132,7 @@ public:
LilvNode* lv2_enumeration;
LilvNode* lv2_freewheeling;
LilvNode* lv2_inPlaceBroken;
LilvNode* lv2_isSideChain;
LilvNode* lv2_integer;
LilvNode* lv2_default;
LilvNode* lv2_minimum;
@ -1927,6 +1928,56 @@ LV2Plugin::get_parameter_descriptor(uint32_t which, ParameterDescriptor& desc) c
return 0;
}
Plugin::IOPortDescription
LV2Plugin::describe_io_port (ARDOUR::DataType dt, bool input, uint32_t id)
{
PortFlags match = 0;
switch (dt) {
case DataType::AUDIO:
match = PORT_AUDIO;
break;
case DataType::MIDI:
match = PORT_SEQUENCE | PORT_MIDI; // ignore old PORT_EVENT
break;
default:
return Plugin::IOPortDescription ("?");
break;
}
if (input) {
match |= PORT_INPUT;
} else {
match |= PORT_OUTPUT;
}
uint32_t p = 0;
uint32_t idx = UINT32_MAX;
uint32_t const num_ports = parameter_count();
for (uint32_t port_index = 0; port_index < num_ports; ++port_index) {
PortFlags flags = _port_flags[port_index];
if ((flags & match) == match) {
if (p == id) {
idx = port_index;
}
++p;
}
}
if (idx == UINT32_MAX) {
return Plugin::IOPortDescription ("?");
}
LilvNode* name = lilv_port_get_name(_impl->plugin,
lilv_plugin_get_port_by_index(_impl->plugin, idx));
Plugin::IOPortDescription iod (lilv_node_as_string (name));
lilv_node_free(name);
if (lilv_port_has_property(_impl->plugin,
lilv_plugin_get_port_by_index(_impl->plugin, idx), _world.lv2_isSideChain)) {
iod.is_sidechain = true;
}
return iod;
}
string
LV2Plugin::describe_parameter(Evoral::Parameter which)
{
@ -2679,6 +2730,7 @@ LV2World::LV2World()
lv2_InputPort = lilv_new_uri(world, LILV_URI_INPUT_PORT);
lv2_OutputPort = lilv_new_uri(world, LILV_URI_OUTPUT_PORT);
lv2_inPlaceBroken = lilv_new_uri(world, LV2_CORE__inPlaceBroken);
lv2_isSideChain = lilv_new_uri(world, LV2_CORE_PREFIX "isSideChain");
lv2_integer = lilv_new_uri(world, LV2_CORE__integer);
lv2_default = lilv_new_uri(world, LV2_CORE__default);
lv2_minimum = lilv_new_uri(world, LV2_CORE__minimum);
@ -2756,6 +2808,7 @@ LV2World::~LV2World()
lilv_node_free(lv2_sampleRate);
lilv_node_free(lv2_reportsLatency);
lilv_node_free(lv2_integer);
lilv_node_free(lv2_isSideChain);
lilv_node_free(lv2_inPlaceBroken);
lilv_node_free(lv2_OutputPort);
lilv_node_free(lv2_InputPort);