void Lv2Plugin::init ()
{
m_activated = false;
m_features = m_world.features.array();
m_instance = slv2_plugin_instantiate(
m_plugin,
m_sampleRate,
m_features->get(Feature::PLUGIN_FEATURE) );
Q_ASSERT(m_instance);
m_name = slv2_plugin_get_name( m_plugin );
Q_ASSERT(m_name);
int count = slv2_plugin_get_num_ports(m_plugin);
m_ports.resize( count );
for (int i = 0; i < count; ++i) {
m_ports[i] = new Lv2Port( m_world, this, i );
}
m_authorName = slv2_plugin_get_author_name( m_plugin );
m_authorEmail = slv2_plugin_get_author_email( m_plugin );
m_authorHomepage = slv2_plugin_get_author_homepage( m_plugin );
m_features->initialize( *this );
}
static void
gst_lv2_base_init (gpointer g_class)
{
GstLV2Class *klass = (GstLV2Class *) g_class;
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstSignalProcessorClass *gsp_class = GST_SIGNAL_PROCESSOR_CLASS (g_class);
GstElementDetails *details;
SLV2Plugin lv2plugin;
SLV2Value val;
guint j, audio_in_count, audio_out_count, control_in_count, control_out_count;
gchar *klass_tags;
GST_DEBUG ("base_init %p", g_class);
lv2plugin = (SLV2Plugin) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
GST_SLV2_PLUGIN_QDATA);
g_assert (lv2plugin);
/* pad templates */
gsp_class->num_audio_in = 0;
gsp_class->num_audio_out = 0;
/* properties */
gsp_class->num_control_in = 0;
gsp_class->num_control_out = 0;
for (j = 0; j < slv2_plugin_get_num_ports (lv2plugin); j++) {
SLV2Port port = slv2_plugin_get_port_by_index (lv2plugin, j);
if (slv2_port_is_a (lv2plugin, port, audio_class)) {
gchar *name =
g_strdup (slv2_value_as_string (slv2_port_get_symbol (lv2plugin,
port)));
GST_DEBUG ("LV2 port name: \"%s\"", name);
if (slv2_port_is_a (lv2plugin, port, input_class))
gst_signal_processor_class_add_pad_template (gsp_class, name,
GST_PAD_SINK, gsp_class->num_audio_in++);
else if (slv2_port_is_a (lv2plugin, port, output_class))
gst_signal_processor_class_add_pad_template (gsp_class, name,
GST_PAD_SRC, gsp_class->num_audio_out++);
/* TODO: else ignore plugin */
g_free (name);
} else if (slv2_port_is_a (lv2plugin, port, control_class)) {
if (slv2_port_is_a (lv2plugin, port, input_class))
gsp_class->num_control_in++;
else if (slv2_port_is_a (lv2plugin, port, output_class))
gsp_class->num_control_out++;
/* TODO: else ignore plugin */
}
/* TODO: else ignore plugin */
}
/* construct the element details struct */
details = g_new0 (GstElementDetails, 1);
val = slv2_plugin_get_name (lv2plugin);
if (val) {
details->longname = g_strdup (slv2_value_as_string (val));
slv2_value_free (val);
} else {
details->longname = g_strdup ("no description available");
}
details->description = details->longname;
val = slv2_plugin_get_author_name (lv2plugin);
if (val) {
details->author = g_strdup (slv2_value_as_string (val));
slv2_value_free (val);
} else {
details->author = g_strdup ("no author available");
}
if (gsp_class->num_audio_in == 0)
klass_tags = "Source/Audio/LV2";
else if (gsp_class->num_audio_out == 0) {
if (gsp_class->num_control_out == 0)
klass_tags = "Sink/Audio/LV2";
else
klass_tags = "Sink/Analyzer/Audio/LV2";
} else
klass_tags = "Filter/Effect/Audio/LV2";
details->klass = klass_tags;
GST_INFO ("tags : %s", details->klass);
gst_element_class_set_details (element_class, details);
g_free (details->longname);
g_free (details->author);
g_free (details);
klass->audio_in_portnums = g_new0 (gint, gsp_class->num_audio_in);
klass->audio_out_portnums = g_new0 (gint, gsp_class->num_audio_out);
klass->control_in_portnums = g_new0 (gint, gsp_class->num_control_in);
klass->control_out_portnums = g_new0 (gint, gsp_class->num_control_out);
audio_in_count = audio_out_count = control_in_count = control_out_count = 0;
for (j = 0; j < slv2_plugin_get_num_ports (lv2plugin); j++) {
SLV2Port port = slv2_plugin_get_port_by_index (lv2plugin, j);
gboolean is_input = slv2_port_is_a (lv2plugin, port, input_class);
if (slv2_port_is_a (lv2plugin, port, audio_class)) {
if (is_input)
klass->audio_in_portnums[audio_in_count++] = j;
else
klass->audio_out_portnums[audio_out_count++] = j;
} else if (slv2_port_is_a (lv2plugin, port, control_class)) {
if (is_input)
klass->control_in_portnums[control_in_count++] = j;
else
klass->control_out_portnums[control_out_count++] = j;
}
}
g_assert (audio_in_count == gsp_class->num_audio_in);
g_assert (audio_out_count == gsp_class->num_audio_out);
g_assert (control_in_count == gsp_class->num_control_in);
g_assert (control_out_count == gsp_class->num_control_out);
/*if (!LV2_IS_INPLACE_BROKEN (desc->Properties))
GST_SIGNAL_PROCESSOR_CLASS_SET_CAN_PROCESS_IN_PLACE (klass); */
klass->plugin = lv2plugin;
}
LV2EffectDialog::LV2EffectDialog(LV2Effect *eff,
wxWindow * parent,
SLV2Plugin data,
int sampleRate,
double length,
double noteLength,
unsigned char noteVelocity,
unsigned char noteKey)
:wxDialog(parent, -1,
LAT1CTOWX(slv2_value_as_string(slv2_plugin_get_name(data))),
wxDefaultPosition, wxDefaultSize,
wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER),
effect(eff),
mControls(eff->GetControls())
{
mLength = length;
this->mData = data;
this->sampleRate = sampleRate;
#ifdef __WXMSW__
// On Windows, for some reason, wxWindows calls OnTextCtrl during creation
// of the text control, and LV2EffectDialog::OnTextCtrl calls HandleText,
// which assumes all the fields have been initialized.
// This can give us a bad pointer crash, so manipulate inSlider to
// no-op HandleText during creation.
inSlider = true;
#else
inSlider = false;
#endif
inText = false;
// Allocate memory for the user parameter controls
toggles = new wxCheckBox*[mControls.size()];
sliders = new wxSlider*[mControls.size()];
fields = new wxTextCtrl*[mControls.size()];
labels = new wxStaticText*[mControls.size()];
wxControl *item;
wxBoxSizer *vSizer = new wxBoxSizer(wxVERTICAL);
// Add information about the plugin
SLV2Value tmpValue = slv2_plugin_get_author_name(data);
if (tmpValue) {
const char* author = slv2_value_as_string(tmpValue);
item = new wxStaticText(this, 0,
wxString(_("Author: "))+LAT1CTOWX(author));
vSizer->Add(item, 0, wxALL, 5);
slv2_value_free(tmpValue);
}
wxScrolledWindow *w = new wxScrolledWindow(this,
wxID_ANY,
wxDefaultPosition,
wxDefaultSize,
wxVSCROLL | wxTAB_TRAVERSAL);
// Try to give the window a sensible default/minimum size
w->SetMinSize(wxSize(
wxMax(600, parent->GetSize().GetWidth() * 2/3),
parent->GetSize().GetHeight() / 2));
w->SetScrollRate(0, 20);
vSizer->Add(w, 1, wxEXPAND|wxALL, 5);
// Preview, OK, & Cancel buttons
vSizer->Add(CreateStdButtonSizer(this, ePreviewButton|eCancelButton|eOkButton), 0, wxEXPAND);
SetSizer(vSizer);
wxSizer *paramSizer =
new wxStaticBoxSizer(wxVERTICAL, w, _("Effect Settings"));
wxFlexGridSizer *gridSizer =
new wxFlexGridSizer(5, 0, 0);
gridSizer->AddGrowableCol(3);
const LV2PortGroup& rootGroup = eff->GetPortGroups();
const ScalePointMap& scalePoints = eff->GetScalePoints();
// Now add the length control
if (effect->GetEffectFlags() & INSERT_EFFECT) {
item = new wxStaticText(w, 0, _("Length (seconds)"));
gridSizer->Add(item, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5);
mSeconds = new wxTextCtrl(w, LADSPA_SECONDS_ID, Internat::ToDisplayString(length));
mSeconds->SetName(_("Length (seconds)"));
gridSizer->Add(mSeconds, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
ConnectFocus(mSeconds);
}
// The note controls if the plugin is a synth
if (effect->IsSynth()) {
// Note length control
item = new wxStaticText(w, 0, _("Note length (seconds)"));
gridSizer->Add(item, 0, wxALIGN_CENTER_VERTICAL | wxALIGN_RIGHT | wxALL, 5);
mNoteSeconds = new wxTextCtrl(w, LADSPA_SECONDS_ID, Internat::ToDisplayString(length / 2));
mNoteSeconds->SetName(_("Note length (seconds)"));
gridSizer->Add(mNoteSeconds, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
ConnectFocus(mNoteSeconds);
// Note velocity control
item = new wxStaticText(w, 0, _("Note velocity"));
gridSizer->Add(item, 0, wxALIGN_CENTER_VERTICAL | wxALIGN_RIGHT | wxALL, 5);
mNoteVelocity = new wxTextCtrl(w, LADSPA_SECONDS_ID, Internat::ToDisplayString(64));
mNoteVelocity->SetName(_("Note velocity"));
gridSizer->Add(mNoteVelocity, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
ConnectFocus(mNoteVelocity);
// Note key control
item = new wxStaticText(w, 0, _("Note key"));
gridSizer->Add(item, 0, wxALIGN_CENTER_VERTICAL | wxALIGN_RIGHT | wxALL, 5);
mNoteKey = new wxTextCtrl(w, LADSPA_SECONDS_ID, Internat::ToDisplayString(64));
mNoteKey->SetName(_("Note key"));
gridSizer->Add(mNoteKey, 0, wxALIGN_CENTER_VERTICAL | wxALL, 5);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
ConnectFocus(mNoteKey);
}
paramSizer->Add(gridSizer, 1, wxEXPAND | wxALL, 5);
// Create user parameter controls
std::queue<const LV2PortGroup*> groups;
groups.push(&rootGroup);
while (!groups.empty()) {
const LV2PortGroup* pg = groups.front();
groups.pop();
if (pg->GetName() != wxT("")) {
wxSizer *groupSizer =
new wxStaticBoxSizer(wxVERTICAL, w, pg->GetName());
paramSizer->Add(groupSizer, 0, wxEXPAND | wxALL, 5);
gridSizer = new wxFlexGridSizer(5, 0, 0);
gridSizer->AddGrowableCol(3);
groupSizer->Add(gridSizer, 1, wxEXPAND | wxALL, 5);
}
std::vector<LV2PortGroup>::const_iterator iter;
for (iter = pg->GetSubGroups().begin(); iter != pg->GetSubGroups().end();
++iter) {
groups.push(&*iter);
}
const std::vector<uint32_t>& params = pg->GetParameters();
for (uint32_t k = 0; k < params.size(); ++k) {
uint32_t p = params[k];
wxString labelText = mControls[p].mName;
item = new wxStaticText(w, 0, labelText + wxT(":"));
gridSizer->Add(item, 0, wxALIGN_CENTER_VERTICAL | wxALIGN_RIGHT | wxALL, 5);
wxString fieldText;
if (mControls[p].mToggle) {
toggles[p] = new wxCheckBox(w, p, wxT(""));
toggles[p]->SetName(labelText);
toggles[p]->SetValue(mControls[p].mControlBuffer > 0);
gridSizer->Add(toggles[p], 0, wxALL, 5);
ConnectFocus(toggles[p]);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
gridSizer->Add(1, 1, 0);
}
else {
if (mControls[p].mInteger)
fieldText.Printf(wxT("%d"), (int)(mControls[p].mControlBuffer + 0.5));
else
fieldText = Internat::ToDisplayString(mControls[p].mControlBuffer);
fields[p] = new wxTextCtrl(w, p, fieldText);
fields[p]->SetName(labelText);
gridSizer->Add(fields[p], 0, wxALIGN_CENTER_VERTICAL | wxALL, 5);
ConnectFocus(fields[p]);
wxString bound;
double lower = 0.0;
double upper = 0.0;
bool haslo = false;
bool hashi = false;
bool forceint = false;
wxString loLabel;
wxString hiLabel;
ScalePointMap::const_iterator iter =
scalePoints.find(mControls[p].mIndex);
if (!std::isnan(mControls[p].mMin)) {
lower = mControls[p].mMin;
haslo = true;
if (iter != scalePoints.end()) {
std::map<float, wxString>::const_iterator iter2 =
iter->second.find(lower);
if (iter2 != iter->second.end()) {
loLabel = iter2->second;
}
}
}
if (!std::isnan(mControls[p].mMax)) {
upper = mControls[p].mMax;
hashi = true;
if (iter != scalePoints.end()) {
std::map<float, wxString>::const_iterator iter2 =
iter->second.find(upper);
if (iter2 != iter->second.end())
hiLabel = iter2->second;
}
}
if (mControls[p].mSampleRate) {
lower *= sampleRate * 1000;
upper *= sampleRate;
forceint = true;
}
wxString str;
if (haslo) {
str = loLabel;
if (str.IsEmpty()) {
if (mControls[p].mInteger || forceint)
str.Printf(wxT("%d"), (int)(lower + 0.5));
else
str = Internat::ToDisplayString(lower);
}
item = new wxStaticText(w, 0, str);
gridSizer->Add(item, 0, wxALIGN_CENTER_VERTICAL | wxALIGN_RIGHT | wxALL, 5);
}
else {
gridSizer->Add(1, 1, 0);
}
sliders[p] =
new wxSlider(w, p,
0, 0, 1000,
wxDefaultPosition,
wxSize(200, -1));
sliders[p]->SetName(labelText);
gridSizer->Add(sliders[p], 0, wxALIGN_CENTER_VERTICAL | wxEXPAND | wxALL, 5);
ConnectFocus(sliders[p]);
if (hashi) {
str = hiLabel;
if (str.IsEmpty()) {
if (mControls[p].mInteger || forceint)
str.Printf(wxT("%d"), (int)(upper + 0.5));
else
str = Internat::ToDisplayString(upper);
}
item = new wxStaticText(w, 0, str);
gridSizer->Add(item, 0, wxALIGN_CENTER_VERTICAL | wxALIGN_LEFT | wxALL, 5);
}
else {
gridSizer->Add(1, 1, 0);
}
}
}
}
// Set all of the sliders based on the value in the
// text fields
inSlider = false; // Now we're ready for HandleText to actually do something.
HandleText();
w->SetSizer(paramSizer);
Layout();
Fit();
SetSizeHints(GetSize());
}
LV2Effect::LV2Effect(SLV2Plugin data,
const std::set<wxString>& categories)
: mValid(true),
mCategories(categories),
mMidiInput(0),
mScalePointsRetrieved(false),
mPortGroupsRetrieved(false) {
// We don't support any features at all, so if the plugin requires
// any we skip it.
SLV2Values req = slv2_plugin_get_required_features(data);
size_t nFeatures = slv2_values_size(req);
slv2_values_free(req);
if (nFeatures > 0) {
mValid = false;
return;
}
mData = data;
pluginName =
wxString::FromUTF8(slv2_value_as_string(slv2_plugin_get_name(mData)));
fInBuffer = NULL;
fOutBuffer = NULL;
mLength = 0;
uint32_t p;
// Allocate buffers for the port indices and the default control values
uint32_t numPorts = slv2_plugin_get_num_ports(mData);
float* minimumValues = new float [numPorts];
float* maximumValues = new float [numPorts];
float* defaultValues = new float [numPorts];
// Retrieve the port ranges for all ports (some values may be NaN)
slv2_plugin_get_port_ranges_float(mData, minimumValues,
maximumValues, defaultValues);
// Get info about all ports
for(p = 0; p < numPorts; p++) {
SLV2Port port = slv2_plugin_get_port_by_index(mData, p);
LV2Port internalPort;
internalPort.mIndex = p;
// Get the port name
SLV2Value tmpName = slv2_port_get_name(data, port);
internalPort.mName = LAT1CTOWX(slv2_value_as_string(tmpName));
slv2_value_free(tmpName);
// Get the port type
if (slv2_port_is_a(mData, port, gAudioPortClass)) {
if (slv2_port_is_a(mData, port, gInputPortClass))
mAudioInputs.push_back(internalPort);
else if (slv2_port_is_a(mData, port, gOutputPortClass))
mAudioOutputs.push_back(internalPort);
}
else if (slv2_port_is_a(mData, port, gControlPortClass) &&
slv2_port_is_a(mData, port, gInputPortClass)) {
internalPort.mControlBuffer = float(1.0);
internalPort.mMin = minimumValues[p];
internalPort.mMax = maximumValues[p];
internalPort.mDefault = defaultValues[p];
if (std::isfinite(defaultValues[p]))
internalPort.mControlBuffer = defaultValues[p];
else if (std::isfinite(minimumValues[p]))
internalPort.mControlBuffer = minimumValues[p];
else if (std::isfinite(maximumValues[p]))
internalPort.mControlBuffer = maximumValues[p];
if (slv2_port_has_property(data, port, gPortToggled))
internalPort.mToggle = true;
if (slv2_port_has_property(data, port, gPortIsInteger))
internalPort.mInteger = true;
if (slv2_port_has_property(data, port, gPortIsSampleRate))
internalPort.mSampleRate = true;
mControlInputs.push_back(internalPort);
}
else if (slv2_port_is_a(mData, port, gMidiPortClass) &&
slv2_port_is_a(mData, port, gInputPortClass)) {
// If there are more than one MIDI input ports, the plugin is invalid
if (mMidiInput) {
mValid = false;
continue;
}
mMidiInput = new LV2Port(internalPort);
}
else {
// Unknown port type, we set the invalid flag
mValid = false;
}
}
delete [] minimumValues;
delete [] maximumValues;
delete [] defaultValues;
// MIDI synths may not have any audio inputs.
if (mMidiInput && mAudioInputs.size() > 0)
mValid = false;
// Determine whether the plugin is a generator, effect or analyser
// depending on the number of ports of each type (not completely accurate,
// but works most of the time)
flags = PLUGIN_EFFECT;
if (mAudioInputs.size() == 0)
flags |= INSERT_EFFECT;
else if (mAudioOutputs.size() == 0)
flags |= ANALYZE_EFFECT;
else
flags |= PROCESS_EFFECT;
}