int
main(int argc, char** argv)
{
if (argc != 2) {
fprintf(stderr, "USAGE: %s BUNDLE\n", argv[0]);
return 1;
}
const char* bundle_path = argv[1];
LilvWorld* world = lilv_world_new();
// Load test plugin bundle
uint8_t* abs_bundle = (uint8_t*)lilv_path_absolute(bundle_path);
SerdNode bundle = serd_node_new_file_uri(abs_bundle, 0, 0, true);
LilvNode* bundle_uri = lilv_new_uri(world, (const char*)bundle.buf);
lilv_world_load_bundle(world, bundle_uri);
free(abs_bundle);
serd_node_free(&bundle);
LilvNode* plugin_uri = lilv_new_uri(world, PLUGIN_URI);
const LilvPlugins* plugins = lilv_world_get_all_plugins(world);
const LilvPlugin* plugin = lilv_plugins_get_by_uri(plugins, plugin_uri);
TEST_ASSERT(plugin);
LilvInstance* instance = lilv_plugin_instantiate(plugin, 48000.0, NULL);
TEST_ASSERT(instance);
lilv_world_free(world);
return 0;
}
Result
LV2Module::instantiate (double samplerate)
{
freeInstance();
currentSampleRate = samplerate;
features.clearQuick();
world.getFeatures (features);
// check for a worker interface
LilvNodes* nodes = lilv_plugin_get_extension_data (plugin);
LILV_FOREACH (nodes, iter, nodes)
{
const LilvNode* node = lilv_nodes_get (nodes, iter);
if (lilv_node_equals (node, world.work_interface))
{
worker = new LV2Worker (world.getWorkThread(), 1);
features.add (worker->getFeature());
}
}
lilv_nodes_free (nodes); nodes = nullptr;
features.add (nullptr);
instance = lilv_plugin_instantiate (plugin, samplerate,
features.getRawDataPointer());
if (instance == nullptr) {
features.clearQuick();
worker = nullptr;
return Result::fail ("Could not instantiate plugin.");
}
if (const void* data = getExtensionData (LV2_WORKER__interface))
{
assert (worker != nullptr);
worker->setSize (2048);
worker->setInterface (lilv_instance_get_handle (instance),
(LV2_Worker_Interface*) data);
}
else if (worker)
{
features.removeFirstMatchingValue (worker->getFeature());
worker = nullptr;
}
return Result::ok();
}
bool LV2Effect::ProcessStereo(int count,
WaveTrack *left,
WaveTrack *right,
sampleCount lstart,
sampleCount rstart,
sampleCount len)
{
/* Allocate buffers */
if (mBlockSize == 0)
{
mBlockSize = left->GetMaxBlockSize() * 2;
fInBuffer = new float *[mAudioInputs.GetCount()];
for (size_t i = 0; i < mAudioInputs.GetCount(); i++)
{
fInBuffer[i] = new float[mBlockSize];
}
fOutBuffer = new float *[mAudioOutputs.GetCount()];
for (size_t i = 0; i < mAudioOutputs.GetCount(); i++)
{
fOutBuffer[i] = new float[mBlockSize];
}
}
/* Instantiate the plugin */
LilvInstance *handle = lilv_plugin_instantiate(mData,
left->GetRate(),
gLV2Features);
if (!handle)
{
wxMessageBox(wxString::Format(_("Unable to load plug-in %s"), pluginName.c_str()));
return false;
}
/* Write the Note On to the MIDI event buffer and connect it */
LV2_Event_Buffer *midiBuffer = NULL;
int noteOffTime;
if (mMidiInput)
{
midiBuffer = lv2_event_buffer_new(40, 2);
LV2_Event_Iterator iter;
lv2_event_begin(&iter, midiBuffer);
uint8_t noteOn[] = { 0x90, mNoteKey, mNoteVelocity };
lv2_event_write(&iter, 0, 0, 1, 3, noteOn);
noteOffTime = mNoteLength * left->GetRate();
if (noteOffTime < len && noteOffTime < mBlockSize) {
uint8_t noteOff[] = { 0x80, mNoteKey, 64 };
lv2_event_write(&iter, noteOffTime, 0, 1, 3, noteOff);
}
lilv_instance_connect_port(handle, mMidiInput->mIndex, midiBuffer);
}
for (size_t p = 0; p < mAudioInputs.GetCount(); p++)
{
lilv_instance_connect_port(handle, mAudioInputs[p].mIndex, fInBuffer[p]);
}
for (size_t p = 0; p < mAudioOutputs.GetCount(); p++)
{
lilv_instance_connect_port(handle, mAudioOutputs[p].mIndex, fOutBuffer[p]);
}
for (size_t p = 0; p < mControlInputs.GetCount(); p++)
{
lilv_instance_connect_port(handle, mControlInputs[p].mIndex,
&mControlInputs[p].mControlBuffer);
}
for (size_t p = 0; p < mControlOutputs.GetCount(); p++)
{
lilv_instance_connect_port(handle, mControlOutputs[p].mIndex,
&mControlOutputs[p].mControlBuffer);
}
float latency = 0.0;
if (mLatencyPortIndex >= 0)
{
lilv_instance_connect_port(handle, mLatencyPortIndex, &latency);
}
lilv_instance_activate(handle);
// Actually perform the effect here
sampleCount originalLen = len;
sampleCount ls = lstart;
sampleCount rs = rstart;
sampleCount ols = ls;
sampleCount ors = rs;
bool noteOver = false;
sampleCount delayed = 0;
sampleCount delay = 0;
bool cleared = false;
while (len || delayed)
{
int block = mBlockSize;
if (len)
{
if (block > len)
{
block = len;
}
if (left && mAudioInputs.GetCount() > 0)
{
left->Get((samplePtr)fInBuffer[0], floatSample, ls, block);
}
if (right && mAudioInputs.GetCount() > 1)
{
right->Get((samplePtr)fInBuffer[1], floatSample, rs, block);
}
}
else if (delayed)
{
// At the end if we don't have enough left for a whole block
if (block > delayed)
{
block = delayed;
}
// Clear the input buffer so that we only pass zeros to the effect.
if (!cleared)
{
for (int i = 0; i < mBlockSize; i++)
{
fInBuffer[0][i] = 0.0;
}
if (right)
{
memcpy(fInBuffer[1], fOutBuffer[0], mBlockSize);
}
cleared = true;
}
}
lilv_instance_run(handle, block);
if (delayed == 0 && latency != 0)
{
delayed = delay = latency;
}
if (delay >= block)
{
delay -= block;
}
else if (delay > 0)
{
sampleCount oblock = block - delay;
if (left && mAudioOutputs.GetCount() > 0)
{
left->Set((samplePtr)(fOutBuffer[0] + delay), floatSample, ols, oblock);
}
if (right && mAudioOutputs.GetCount() > 1)
{
right->Set((samplePtr)(fOutBuffer[1] + delay), floatSample, ors, oblock);
}
ols += oblock;
ors += oblock;
delay = 0;
}
else
{
if (left && mAudioOutputs.GetCount() > 0)
{
left->Set((samplePtr)fOutBuffer[0], floatSample, ols, block);
}
if (right && mAudioOutputs.GetCount() > 1)
{
right->Set((samplePtr)fOutBuffer[1], floatSample, ors, block);
}
ols += block;
ors += block;
}
if (len)
{
len -= block;
noteOffTime -= block;
// Clear the event buffer and add the note off event if needed
if (mMidiInput)
{
lv2_event_buffer_reset(midiBuffer, 1,
(uint8_t *)midiBuffer +
sizeof(LV2_Event_Buffer));
if (!noteOver && noteOffTime < len && noteOffTime < block)
{
LV2_Event_Iterator iter;
lv2_event_begin(&iter, midiBuffer);
uint8_t noteOff[] = { 0x80, mNoteKey, 64 };
lv2_event_write(&iter, noteOffTime, 0, 1, 3, noteOff);
noteOver = true;
}
}
}
else if (delayed)
{
delayed -= block;
}
ls += block;
rs += block;
if (mAudioInputs.GetCount() > 1)
{
if (TrackGroupProgress(count, (ls-lstart)/(double)originalLen))
{
return false;
}
}
else
{
if (TrackProgress(count, (ls-lstart)/(double)originalLen))
{
return false;
}
}
}
lilv_instance_deactivate(handle);
lilv_instance_free(handle);
return true;
}
static gboolean
gst_lv2_filter_setup (GstAudioFilter * gsp, const GstAudioInfo * info)
{
GstLV2Filter *self;
GstLV2FilterClass *oclass;
GstAudioFilterClass *audiofilter_class;
gint i;
audiofilter_class = GST_AUDIO_FILTER_GET_CLASS (gsp);
self = (GstLV2Filter *) gsp;
oclass = (GstLV2FilterClass *) audiofilter_class;
g_return_val_if_fail (self->activated == FALSE, FALSE);
GST_DEBUG_OBJECT (self, "instantiating the plugin at %d Hz",
GST_AUDIO_INFO_RATE (info));
if (self->instance)
lilv_instance_free (self->instance);
if (!(self->instance =
lilv_plugin_instantiate (oclass->plugin, GST_AUDIO_INFO_RATE (info),
NULL)))
goto no_instance;
/* connect the control ports */
for (i = 0; i < oclass->control_in_ports->len; i++)
lilv_instance_connect_port (self->instance,
g_array_index (oclass->control_in_ports, GstLV2FilterPort, i).index,
&(self->ports.control.in[i]));
for (i = 0; i < oclass->control_out_ports->len; i++)
lilv_instance_connect_port (self->instance,
g_array_index (oclass->control_out_ports, GstLV2FilterPort, i).index,
&(self->ports.control.out[i]));
/* FIXME Handle audio channel positionning while negotiating CAPS */
#if 0
/* set input group pad audio channel position */
for (i = 0; i < oclass->in_groups->len; ++i) {
group = &g_array_index (oclass->in_groups, GstLV2FilterGroup, i);
if (group->has_roles) {
if ((positions = gst_lv2_filter_build_positions (group))) {
if ((pad = gst_element_get_static_pad (GST_ELEMENT (gsp),
lilv_node_as_string (group->symbol)))) {
GST_INFO_OBJECT (self, "set audio channel positions on sink pad %s",
lilv_node_as_string (group->symbol));
s = gst_caps_get_structure (caps, 0);
gst_audio_set_channel_positions (s, positions);
gst_object_unref (pad);
}
g_free (positions);
positions = NULL;
}
}
}
/* set output group pad audio channel position */
for (i = 0; i < oclass->out_groups->len; ++i) {
group = &g_array_index (oclass->out_groups, GstLV2FilterGroup, i);
if (group->has_roles) {
if ((positions = gst_lv2_filter_build_positions (group))) {
if ((pad = gst_element_get_static_pad (GST_ELEMENT (gsp),
lilv_node_as_string (group->symbol)))) {
GST_INFO_OBJECT (self, "set audio channel positions on src pad %s",
lilv_node_as_string (group->symbol));
s = gst_caps_get_structure (caps, 0);
gst_audio_set_channel_positions (s, positions);
gst_object_unref (pad);
}
g_free (positions);
positions = NULL;
}
}
}
#endif
lilv_instance_activate (self->instance);
self->activated = TRUE;
return TRUE;
no_instance:
{
GST_ERROR_OBJECT (gsp, "could not create instance");
return FALSE;
}
}
Lv2Plugin *Lv2PluginCache::getPlugin(const char *uri, const char *preset, Lv2State *state) {
// create a unique key for uri/preset/state
std::string keyString(uri);
if(preset) {
keyString.append(":");
keyString.append(preset);
}
std::size_t hash = std::hash<std::string>()(keyString);
if(state) {
hash = hash ^ (state->getHash() << 1);
}
// count tells how many instances of this type of plugin
int count = ++instanceCount[hash];
// return cached plugin instance if available
int key = hash + count;
Lv2Plugin *cachedPlugin = findObject(key);
if(cachedPlugin) {
cachedPlugin->restore();
return cachedPlugin;
}
// look in cache for plugin type by uri
std::string uriString(uri);
const LilvPlugin *lilvPlugin = pluginMap[uriString];
if(!lilvPlugin) {
// find lv2 plugin in lilv
LilvNode *lilvUri = lilv_new_uri(world, uri);
lilvPlugin = lilv_plugins_get_by_uri(plugins, lilvUri);
lilv_node_free(lilvUri);
if(!lilvPlugin) {
throw std::logic_error(std::string("Plugin is not installed on this system: ") + uriString);
}
// check that required features are supported
LilvNodes* features = lilv_plugin_get_required_features(lilvPlugin);
for (LilvIter* f = lilv_nodes_begin(features); !lilv_nodes_is_end(features, f); f = lilv_nodes_next(features, f)) {
const char* featureUri = lilv_node_as_uri(lilv_nodes_get(features, f));
if(!supported[featureUri]) {
throw std::logic_error(std::string("Plugin ") + uriString + " requires unsupported feature: " + featureUri);
}
}
lilv_nodes_free(features);
pluginMap[uriString] = lilvPlugin;
}
// create worker if required
Lv2Worker *worker = 0;
if (lilv_plugin_has_feature(lilvPlugin, lv2Constants.lv2WorkerSchedule)
&& lilv_plugin_has_extension_data(lilvPlugin, lv2Constants.lv2WorkerInterface)) {
worker = new Lv2Worker();
((LV2_Worker_Schedule*)lv2Features[5]->data)->handle = worker;
}
// instantiate
LilvInstance *instance = lilv_plugin_instantiate(lilvPlugin, sampleRate, lv2Features);
// connect worker with plugin instance
if(worker) {
worker->setInstance(instance);
}
// create plugin object
Lv2Plugin *plugin = new Lv2Plugin(lilvPlugin, instance, lv2Constants, worker);
// restore baseline default state
LilvState *defaultState = lilv_state_new_from_world(world, &map, lilv_plugin_get_uri(lilvPlugin));
lilv_state_restore(defaultState, instance, setPortValue, plugin, 0, lv2Features);
// find and restore preset
if(preset) {
LilvNodes* presets = lilv_plugin_get_related(lilvPlugin, lv2Constants.lv2Presets);
LilvNode *myPreset = 0;
LILV_FOREACH(nodes, i, presets) {
const LilvNode* presetNode = lilv_nodes_get(presets, i);
lilv_world_load_resource(world, presetNode);
LilvNodes* labels = lilv_world_find_nodes(world, presetNode, lv2Constants.lv2RdfsLabel, NULL);
if (labels) {
const LilvNode* label = lilv_nodes_get_first(labels);
const char *labelString = lilv_node_as_string(label); // TODO: free?
if(!strcmp(labelString, preset)) {
myPreset = lilv_node_duplicate(presetNode);
}
lilv_nodes_free(labels);
}
}
lilv_nodes_free(presets);
if(myPreset) {
LilvState* presetState = lilv_state_new_from_world(world, &map, myPreset);
lilv_state_restore(presetState, instance, setPortValue, plugin, 0, NULL);
// lilv_state_free(state); // TODO
}
else {
throw std::logic_error(std::string("Plugin ") + uriString + " has no such preset: " + preset);
}
}
// restore state
else if(state) { // TODO: what if state is requested on a plugin that doesn't support?
static double
bench(const LilvPlugin* p, uint32_t sample_count, uint32_t block_size)
{
URITable uri_table;
uri_table_init(&uri_table);
LV2_URID_Map map = { &uri_table, uri_table_map };
LV2_Feature map_feature = { LV2_URID_MAP_URI, &map };
LV2_URID_Unmap unmap = { &uri_table, uri_table_unmap };
LV2_Feature unmap_feature = { LV2_URID_UNMAP_URI, &unmap };
const LV2_Feature* features[] = { &map_feature, &unmap_feature, NULL };
float* const buf = (float*)calloc(block_size * 2, sizeof(float));
float* const in = buf;
float* const out = buf + block_size;
if (!buf) {
fprintf(stderr, "Out of memory\n");
return 0.0;
}
LV2_Atom_Sequence seq = {
{ sizeof(LV2_Atom_Sequence_Body),
uri_table_map(&uri_table, LV2_ATOM__Sequence) },
{ 0, 0 } };
const char* uri = lilv_node_as_string(lilv_plugin_get_uri(p));
LilvNodes* required = lilv_plugin_get_required_features(p);
LILV_FOREACH(nodes, i, required) {
const LilvNode* feature = lilv_nodes_get(required, i);
if (!lilv_node_equals(feature, urid_map)) {
fprintf(stderr, "<%s> requires feature <%s>, skipping\n",
uri, lilv_node_as_uri(feature));
free(buf);
uri_table_destroy(&uri_table);
return 0.0;
}
}
LilvInstance* instance = lilv_plugin_instantiate(p, 48000.0, features);
if (!instance) {
fprintf(stderr, "Failed to instantiate <%s>\n",
lilv_node_as_uri(lilv_plugin_get_uri(p)));
free(buf);
uri_table_destroy(&uri_table);
return 0.0;
}
float* controls = (float*)calloc(
lilv_plugin_get_num_ports(p), sizeof(float));
lilv_plugin_get_port_ranges_float(p, NULL, NULL, controls);
const uint32_t n_ports = lilv_plugin_get_num_ports(p);
for (uint32_t index = 0; index < n_ports; ++index) {
const LilvPort* port = lilv_plugin_get_port_by_index(p, index);
if (lilv_port_is_a(p, port, lv2_ControlPort)) {
lilv_instance_connect_port(instance, index, &controls[index]);
} else if (lilv_port_is_a(p, port, lv2_AudioPort) ||
lilv_port_is_a(p, port, lv2_CVPort)) {
if (lilv_port_is_a(p, port, lv2_InputPort)) {
lilv_instance_connect_port(instance, index, in);
} else if (lilv_port_is_a(p, port, lv2_OutputPort)) {
lilv_instance_connect_port(instance, index, out);
} else {
fprintf(stderr, "<%s> port %d neither input nor output, skipping\n",
uri, index);
lilv_instance_free(instance);
free(buf);
free(controls);
uri_table_destroy(&uri_table);
return 0.0;
}
} else if (lilv_port_is_a(p, port, atom_AtomPort)) {
lilv_instance_connect_port(instance, index, &seq);
} else {
fprintf(stderr, "<%s> port %d has unknown type, skipping\n",
uri, index);
lilv_instance_free(instance);
free(buf);
free(controls);
uri_table_destroy(&uri_table);
return 0.0;
}
}
lilv_instance_activate(instance);
struct timespec ts = bench_start();
for (uint32_t i = 0; i < (sample_count / block_size); ++i) {
lilv_instance_run(instance, block_size);
}
const double elapsed = bench_end(&ts);
lilv_instance_deactivate(instance);
lilv_instance_free(instance);
uri_table_destroy(&uri_table);
if (full_output) {
printf("%d %d ", block_size, sample_count);
}
printf("%lf %s\n", elapsed, uri);
free(buf);
free(controls);
return elapsed;
}
