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ardour/libs/ardour/ladspa_plugin.cc

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/*
* Copyright (C) 2000-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2005-2006 Sampo Savolainen <v2@iki.fi>
* Copyright (C) 2005-2006 Taybin Rutkin <taybin@taybin.com>
* Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
* Copyright (C) 2007-2017 Tim Mayberry <mojofunk@gmail.com>
* Copyright (C) 2008-2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2013-2019 Robin Gareus <robin@gareus.org>
* Copyright (C) 2013 John Emmas <john@creativepost.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef WAF_BUILD
#include "libardour-config.h"
#endif
#include <inttypes.h>
#include <vector>
#include <string>
#include <cstdlib>
#include <cstdio> // so libraptor doesn't complain
#include <cmath>
#ifndef COMPILER_MSVC
#include <dirent.h>
#endif
#include <sys/stat.h>
#include <cerrno>
#ifdef HAVE_LRDF
#include <lrdf.h>
#endif
#include <glibmm/miscutils.h>
#include <glibmm/fileutils.h>
#include <glibmm/convert.h>
#include "pbd/compose.h"
#include "pbd/error.h"
#include "pbd/locale_guard.h"
#include "pbd/xml++.h"
#include "ardour/session.h"
#include "ardour/ladspa_plugin.h"
#include "ardour/buffer_set.h"
#include "ardour/audio_buffer.h"
#include "ardour/filesystem_paths.h"
#include "pbd/stl_delete.h"
#include "pbd/i18n.h"
#include <locale.h>
using namespace std;
using namespace ARDOUR;
using namespace PBD;
LadspaPlugin::LadspaPlugin (string module_path, AudioEngine& e, Session& session, uint32_t index, samplecnt_t rate)
: Plugin (e, session)
{
init (module_path, index, rate);
}
LadspaPlugin::LadspaPlugin (const LadspaPlugin &other)
: Plugin (other)
{
init (other._module_path, other._index, other._sample_rate);
for (uint32_t i = 0; i < parameter_count(); ++i) {
_control_data[i] = other._shadow_data[i];
_shadow_data[i] = other._shadow_data[i];
}
}
void
LadspaPlugin::init (string module_path, uint32_t index, samplecnt_t rate)
{
void* func;
LADSPA_Descriptor_Function dfunc;
uint32_t i, port_cnt;
_module_path = module_path;
_module = new Glib::Module(_module_path);
_control_data = 0;
_shadow_data = 0;
_latency_control_port = 0;
_was_activated = false;
if (!(*_module)) {
warning << _("LADSPA: Unable to open module: ") << Glib::Module::get_last_error() << endmsg;
delete _module;
throw failed_constructor();
}
if (!_module->get_symbol("ladspa_descriptor", func)) {
warning << _("LADSPA: module has no descriptor function.") << endmsg;
throw failed_constructor();
}
dfunc = (LADSPA_Descriptor_Function)func;
if ((_descriptor = dfunc (index)) == 0) {
warning << _("LADSPA: plugin has gone away since discovery!") << endmsg;
throw failed_constructor();
}
_index = index;
if (LADSPA_IS_INPLACE_BROKEN(_descriptor->Properties)) {
info << string_compose(_("LADSPA: \"%1\" cannot be used, since it cannot do inplace processing"), _descriptor->Name) << endmsg;
throw failed_constructor();
}
_sample_rate = rate;
if (_descriptor->instantiate == 0) {
throw failed_constructor();
}
if ((_handle = _descriptor->instantiate (_descriptor, rate)) == 0) {
throw failed_constructor();
}
port_cnt = parameter_count();
_control_data = new LADSPA_Data[port_cnt];
memset (_control_data, 0, sizeof (LADSPA_Data) * port_cnt);
_shadow_data = new LADSPA_Data[port_cnt];
memset (_shadow_data, 0, sizeof (LADSPA_Data) * port_cnt);
for (i = 0; i < port_cnt; ++i) {
if (LADSPA_IS_PORT_CONTROL(port_descriptor (i))) {
connect_port (i, &_control_data[i]);
if (LADSPA_IS_PORT_OUTPUT(port_descriptor (i)) &&
strcmp (port_names()[i], X_("latency")) == 0) {
_latency_control_port = &_control_data[i];
*_latency_control_port = 0;
}
_shadow_data[i] = _default_value (i);
_control_data[i] = _shadow_data[i];
}
}
latency_compute_run ();
}
LadspaPlugin::~LadspaPlugin ()
{
deactivate ();
cleanup ();
// glib has internal reference counting on modules so this is ok
delete _module;
delete [] _control_data;
delete [] _shadow_data;
}
string
LadspaPlugin::unique_id() const
{
char buf[32];
snprintf (buf, sizeof (buf), "%lu", _descriptor->UniqueID);
return string (buf);
}
float
LadspaPlugin::_default_value (uint32_t port) const
{
const LADSPA_PortRangeHint *prh = port_range_hints();
float ret = 0.0f;
bool bounds_given = false;
bool sr_scaling = false;
bool earlier_hint = false;
bool logarithmic = LADSPA_IS_HINT_LOGARITHMIC (prh[port].HintDescriptor);
/* defaults - case 1 */
if (LADSPA_IS_HINT_HAS_DEFAULT(prh[port].HintDescriptor)) {
if (LADSPA_IS_HINT_DEFAULT_MINIMUM(prh[port].HintDescriptor)) {
ret = prh[port].LowerBound;
bounds_given = true;
sr_scaling = true;
}
else if (LADSPA_IS_HINT_DEFAULT_LOW(prh[port].HintDescriptor)) {
if (logarithmic && prh[port].LowerBound * prh[port].UpperBound > 0) {
ret = exp (log(prh[port].LowerBound) * 0.75f + log (prh[port].UpperBound) * 0.25f);
} else {
ret = prh[port].LowerBound * 0.75f + prh[port].UpperBound * 0.25f;
}
bounds_given = true;
sr_scaling = true;
}
else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(prh[port].HintDescriptor)) {
if (logarithmic && prh[port].LowerBound * prh[port].UpperBound > 0) {
ret = exp (log(prh[port].LowerBound) * 0.5f + log (prh[port].UpperBound) * 0.5f);
} else {
ret = prh[port].LowerBound * 0.5f + prh[port].UpperBound * 0.5f;
}
bounds_given = true;
sr_scaling = true;
}
else if (LADSPA_IS_HINT_DEFAULT_HIGH(prh[port].HintDescriptor)) {
if (logarithmic && prh[port].LowerBound * prh[port].UpperBound > 0) {
ret = exp (log(prh[port].LowerBound) * 0.25f + log (prh[port].UpperBound) * 0.75f);
} else {
ret = prh[port].LowerBound * 0.25f + prh[port].UpperBound * 0.75f;
}
bounds_given = true;
sr_scaling = true;
}
else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(prh[port].HintDescriptor)) {
ret = prh[port].UpperBound;
bounds_given = true;
sr_scaling = true;
}
else if (LADSPA_IS_HINT_DEFAULT_0(prh[port].HintDescriptor)) {
ret = 0.0f;
earlier_hint = true;
}
else if (LADSPA_IS_HINT_DEFAULT_1(prh[port].HintDescriptor)) {
ret = 1.0f;
earlier_hint = true;
}
else if (LADSPA_IS_HINT_DEFAULT_100(prh[port].HintDescriptor)) {
ret = 100.0f;
earlier_hint = true;
}
else if (LADSPA_IS_HINT_DEFAULT_440(prh[port].HintDescriptor)) {
ret = 440.0f;
earlier_hint = true;
}
else {
/* no hint found */
ret = 0.0f;
}
}
/* defaults - case 2 */
else if (LADSPA_IS_HINT_BOUNDED_BELOW(prh[port].HintDescriptor) &&
!LADSPA_IS_HINT_BOUNDED_ABOVE(prh[port].HintDescriptor)) {
if (prh[port].LowerBound < 0) {
ret = 0.0f;
} else {
ret = prh[port].LowerBound;
}
bounds_given = true;
sr_scaling = true;
}
/* defaults - case 3 */
else if (!LADSPA_IS_HINT_BOUNDED_BELOW(prh[port].HintDescriptor) &&
LADSPA_IS_HINT_BOUNDED_ABOVE(prh[port].HintDescriptor)) {
if (prh[port].UpperBound > 0) {
ret = 0.0f;
} else {
ret = prh[port].UpperBound;
}
bounds_given = true;
sr_scaling = true;
}
/* defaults - case 4 */
else if (LADSPA_IS_HINT_BOUNDED_BELOW(prh[port].HintDescriptor) &&
LADSPA_IS_HINT_BOUNDED_ABOVE(prh[port].HintDescriptor)) {
if (prh[port].LowerBound < 0 && prh[port].UpperBound > 0) {
ret = 0.0f;
} else if (prh[port].LowerBound < 0 && prh[port].UpperBound < 0) {
ret = prh[port].UpperBound;
} else {
ret = prh[port].LowerBound;
}
bounds_given = true;
sr_scaling = true;
}
/* defaults - case 5 */
if (LADSPA_IS_HINT_SAMPLE_RATE(prh[port].HintDescriptor) && !earlier_hint) {
if (bounds_given) {
if (sr_scaling) {
ret *= _sample_rate;
}
} else {
ret = _sample_rate;
}
}
return ret;
}
void
LadspaPlugin::set_parameter (uint32_t which, float val, sampleoffset_t when)
{
if (which < _descriptor->PortCount) {
if (get_parameter (which) == val) {
return;
}
_shadow_data[which] = (LADSPA_Data) val;
#if 0
if (which < parameter_count() && controls[which]) {
controls[which]->Changed ();
}
#endif
} else {
warning << string_compose (_("illegal parameter number used with plugin \"%1\". This may "
"indicate a change in the plugin design, and presets may be "
"invalid"), name())
<< endmsg;
}
Plugin::set_parameter (which, val, when);
}
/** @return `plugin' value */
float
LadspaPlugin::get_parameter (uint32_t which) const
{
if (LADSPA_IS_PORT_INPUT(port_descriptor (which))) {
return (float) _shadow_data[which];
} else {
return (float) _control_data[which];
}
}
uint32_t
LadspaPlugin::nth_parameter (uint32_t n, bool& ok) const
{
uint32_t x, c;
ok = false;
for (c = 0, x = 0; x < _descriptor->PortCount; ++x) {
if (LADSPA_IS_PORT_CONTROL (port_descriptor (x))) {
if (c++ == n) {
ok = true;
return x;
}
}
}
return 0;
}
void
LadspaPlugin::add_state (XMLNode* root) const
{
XMLNode *child;
for (uint32_t i = 0; i < parameter_count(); ++i){
if (LADSPA_IS_PORT_INPUT(port_descriptor (i)) &&
LADSPA_IS_PORT_CONTROL(port_descriptor (i))){
child = new XMLNode("Port");
child->set_property("number", i);
child->set_property("value", _shadow_data[i]);
root->add_child_nocopy (*child);
}
}
}
int
LadspaPlugin::set_state (const XMLNode& node, int version)
{
if (version < 3000) {
return set_state_2X (node, version);
}
XMLNodeList nodes;
XMLNodeConstIterator iter;
XMLNode *child;
if (node.name() != state_node_name()) {
error << _("Bad node sent to LadspaPlugin::set_state") << endmsg;
return -1;
}
nodes = node.children ("Port");
for (iter = nodes.begin(); iter != nodes.end(); ++iter) {
child = *iter;
uint32_t port_id;
float value;
if (!child->get_property ("number", port_id)) {
warning << _("LADSPA: no ladspa port number") << endmsg;
continue;
}
if (!child->get_property ("value", value)) {
warning << _("LADSPA: no ladspa port data") << endmsg;
continue;
}
set_parameter (port_id, value, 0);
}
latency_compute_run ();
return Plugin::set_state (node, version);
}
int
LadspaPlugin::set_state_2X (const XMLNode& node, int /* version */)
{
XMLNodeList nodes;
XMLProperty const * prop;
XMLNodeConstIterator iter;
XMLNode *child;
const char *port;
const char *data;
uint32_t port_id;
LocaleGuard lg;
if (node.name() != state_node_name()) {
error << _("Bad node sent to LadspaPlugin::set_state") << endmsg;
return -1;
}
nodes = node.children ("port");
for(iter = nodes.begin(); iter != nodes.end(); ++iter){
child = *iter;
if ((prop = child->property("number")) != 0) {
port = prop->value().c_str();
} else {
warning << _("LADSPA: no ladspa port number") << endmsg;
continue;
}
if ((prop = child->property("value")) != 0) {
data = prop->value().c_str();
} else {
warning << _("LADSPA: no ladspa port data") << endmsg;
continue;
}
sscanf (port, "%" PRIu32, &port_id);
set_parameter (port_id, atof(data), 0);
}
latency_compute_run ();
return 0;
}
int
LadspaPlugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc) const
{
LADSPA_PortRangeHint prh;
prh = port_range_hints()[which];
if (LADSPA_IS_HINT_BOUNDED_BELOW(prh.HintDescriptor)) {
if (LADSPA_IS_HINT_SAMPLE_RATE(prh.HintDescriptor)) {
desc.lower = prh.LowerBound * _session.sample_rate();
} else {
desc.lower = prh.LowerBound;
}
} else {
desc.lower = 0;
}
if (LADSPA_IS_HINT_BOUNDED_ABOVE(prh.HintDescriptor)) {
if (LADSPA_IS_HINT_SAMPLE_RATE(prh.HintDescriptor)) {
desc.upper = prh.UpperBound * _session.sample_rate();
} else {
desc.upper = prh.UpperBound;
}
} else {
if (LADSPA_IS_HINT_TOGGLED (prh.HintDescriptor)) {
desc.upper = 1;
} else {
desc.upper = 1; /* completely arbitrary, although a range 0..1 makes some sense */
}
}
if (LADSPA_IS_HINT_HAS_DEFAULT (prh.HintDescriptor)) {
desc.normal = _default_value(which);
} else {
/* if there is no explicit hint for the default
* value, use lower bound. This is not great but
* better than just assuming '0' which may be out-of range.
*/
desc.normal = desc.lower;
}
desc.toggled = LADSPA_IS_HINT_TOGGLED (prh.HintDescriptor);
desc.logarithmic = LADSPA_IS_HINT_LOGARITHMIC (prh.HintDescriptor);
desc.sr_dependent = LADSPA_IS_HINT_SAMPLE_RATE (prh.HintDescriptor);
desc.integer_step = LADSPA_IS_HINT_INTEGER (prh.HintDescriptor);
desc.label = port_names()[which];
desc.scale_points = get_scale_points(which);
desc.update_steps();
return 0;
}
string
LadspaPlugin::describe_parameter (Evoral::Parameter which)
{
if (which.type() == PluginAutomation && which.id() < parameter_count()) {
return port_names()[which.id()];
} else {
return "??";
}
}
ARDOUR::samplecnt_t
LadspaPlugin::plugin_latency () const
{
if (_latency_control_port) {
return (samplecnt_t) floor (*_latency_control_port);
} else {
return 0;
}
}
set<Evoral::Parameter>
LadspaPlugin::automatable () const
{
set<Evoral::Parameter> ret;
for (uint32_t i = 0; i < parameter_count(); ++i){
if (LADSPA_IS_PORT_INPUT(port_descriptor (i)) &&
LADSPA_IS_PORT_CONTROL(port_descriptor (i))){
ret.insert (ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
}
}
return ret;
}
int
LadspaPlugin::connect_and_run (BufferSet& bufs,
samplepos_t start, samplepos_t end, double speed,
ChanMapping const& in_map, ChanMapping const& out_map,
pframes_t nframes, samplecnt_t offset)
{
Plugin::connect_and_run (bufs, start, end, speed, in_map, out_map, nframes, offset);
cycles_t now;
cycles_t then = get_cycles ();
BufferSet& silent_bufs = _session.get_silent_buffers(ChanCount(DataType::AUDIO, 1));
BufferSet& scratch_bufs = _session.get_scratch_buffers(ChanCount(DataType::AUDIO, 1));
uint32_t audio_in_index = 0;
uint32_t audio_out_index = 0;
bool valid;
for (uint32_t port_index = 0; port_index < parameter_count(); ++port_index) {
if (LADSPA_IS_PORT_AUDIO(port_descriptor(port_index))) {
if (LADSPA_IS_PORT_INPUT(port_descriptor(port_index))) {
const uint32_t buf_index = in_map.get(DataType::AUDIO, audio_in_index++, &valid);
connect_port(port_index,
valid ? bufs.get_audio(buf_index).data(offset)
: silent_bufs.get_audio(0).data(0));
} else if (LADSPA_IS_PORT_OUTPUT(port_descriptor(port_index))) {
const uint32_t buf_index = out_map.get(DataType::AUDIO, audio_out_index++, &valid);
connect_port(port_index,
valid ? bufs.get_audio(buf_index).data(offset)
: scratch_bufs.get_audio(0).data(0));
}
}
}
run_in_place (nframes);
now = get_cycles ();
set_cycles ((uint32_t) (now - then));
return 0;
}
bool
LadspaPlugin::parameter_is_control (uint32_t param) const
{
return LADSPA_IS_PORT_CONTROL(port_descriptor (param));
}
bool
LadspaPlugin::parameter_is_audio (uint32_t param) const
{
return LADSPA_IS_PORT_AUDIO(port_descriptor (param));
}
bool
LadspaPlugin::parameter_is_output (uint32_t param) const
{
return LADSPA_IS_PORT_OUTPUT(port_descriptor (param));
}
bool
LadspaPlugin::parameter_is_input (uint32_t param) const
{
return LADSPA_IS_PORT_INPUT(port_descriptor (param));
}
std::shared_ptr<ScalePoints>
LadspaPlugin::get_scale_points(uint32_t port_index) const
{
std::shared_ptr<ScalePoints> ret;
#ifdef HAVE_LRDF
const uint32_t id = atol(unique_id().c_str());
lrdf_defaults* points = lrdf_get_scale_values(id, port_index);
if (!points) {
return ret;
}
ret = std::shared_ptr<ScalePoints>(new ScalePoints());
for (uint32_t i = 0; i < points->count; ++i) {
ret->insert(make_pair(points->items[i].label,
points->items[i].value));
}
lrdf_free_setting_values(points);
#endif
return ret;
}
void
LadspaPlugin::run_in_place (pframes_t nframes)
{
for (uint32_t i = 0; i < parameter_count(); ++i) {
if (LADSPA_IS_PORT_INPUT(port_descriptor (i)) && LADSPA_IS_PORT_CONTROL(port_descriptor (i))) {
_control_data[i] = _shadow_data[i];
}
}
assert (_was_activated);
_descriptor->run (_handle, nframes);
}
void
LadspaPlugin::latency_compute_run ()
{
if (!_latency_control_port) {
return;
}
/* we need to run the plugin so that it can set its latency
parameter.
*/
activate ();
uint32_t port_index = 0;
uint32_t in_index = 0;
uint32_t out_index = 0;
const samplecnt_t bufsize = 1024;
LADSPA_Data buffer[bufsize];
memset(buffer,0,sizeof(LADSPA_Data)*bufsize);
/* Note that we've already required that plugins
be able to handle in-place processing.
*/
port_index = 0;
while (port_index < parameter_count()) {
if (LADSPA_IS_PORT_AUDIO (port_descriptor (port_index))) {
if (LADSPA_IS_PORT_INPUT (port_descriptor (port_index))) {
connect_port (port_index, buffer);
in_index++;
} else if (LADSPA_IS_PORT_OUTPUT (port_descriptor (port_index))) {
connect_port (port_index, buffer);
out_index++;
}
}
port_index++;
}
run_in_place (bufsize);
deactivate ();
}
PluginPtr
LadspaPluginInfo::load (Session& session)
{
try {
PluginPtr plugin (new LadspaPlugin (path, session.engine(), session, index, session.sample_rate()));
plugin->set_info(PluginInfoPtr(new LadspaPluginInfo(*this)));
return plugin;
}
catch (failed_constructor &err) {
return PluginPtr ((Plugin*) 0);
}
}
std::vector<Plugin::PresetRecord>
LadspaPluginInfo::get_presets (bool /*user_only*/) const
{
std::vector<Plugin::PresetRecord> p;
#ifdef HAVE_LRDF
if (!isdigit (unique_id[0])) {
return p;
}
uint32_t id = atol (unique_id);
lrdf_uris* set_uris = lrdf_get_setting_uris(id);
if (set_uris) {
for (uint32_t i = 0; i < (uint32_t) set_uris->count; ++i) {
// TODO somehow mark factory presets as such..
if (char* label = lrdf_get_label (set_uris->items[i])) {
p.push_back (Plugin::PresetRecord (set_uris->items[i], label));
}
}
lrdf_free_uris(set_uris);
}
std::sort (p.begin (), p.end ());
#endif
return p;
}
LadspaPluginInfo::LadspaPluginInfo()
{
type = ARDOUR::LADSPA;
}
void
LadspaPlugin::find_presets ()
{
#ifdef HAVE_LRDF
uint32_t id;
std::string unique (unique_id());
if (!isdigit (unique[0])) {
return;
}
id = atol (unique.c_str());
lrdf_uris* set_uris = lrdf_get_setting_uris(id);
if (set_uris) {
for (uint32_t i = 0; i < (uint32_t) set_uris->count; ++i) {
if (char* label = lrdf_get_label(set_uris->items[i])) {
PresetRecord rec (set_uris->items[i], label);
_presets.insert (make_pair (set_uris->items[i], rec));
}
}
lrdf_free_uris(set_uris);
}
#endif
}
bool
LadspaPlugin::load_preset (PresetRecord r)
{
#ifdef HAVE_LRDF
lrdf_defaults* defs = lrdf_get_setting_values (r.uri.c_str());
if (defs) {
for (uint32_t i = 0; i < (uint32_t) defs->count; ++i) {
if (parameter_is_input (defs->items[i].pid)) {
set_parameter(defs->items[i].pid, defs->items[i].value, 0);
PresetPortSetValue (defs->items[i].pid, defs->items[i].value); /* EMIT SIGNAL */
}
}
lrdf_free_setting_values(defs);
}
Plugin::load_preset (r);
#endif
return true;
}
#ifdef HAVE_LRDF
/* XXX: should be in liblrdf */
static void
lrdf_remove_preset (const char* /*source*/, const char *setting_uri)
{
lrdf_statement p;
lrdf_statement *q;
lrdf_statement *i;
char setting_uri_copy[64];
char buf[64];
strncpy(setting_uri_copy, setting_uri, sizeof(setting_uri_copy) - 1);
setting_uri_copy[sizeof (setting_uri_copy) - 1] = '\0';
p.subject = setting_uri_copy;
strncpy(buf, LADSPA_BASE "hasPortValue", sizeof(buf));
p.predicate = buf;
p.object = NULL;
q = lrdf_matches(&p);
p.predicate = NULL;
p.object = NULL;
for (i = q; i; i = i->next) {
p.subject = i->object;
lrdf_remove_matches(&p);
}
lrdf_free_statements(q);
p.subject = NULL;
strncpy(buf, LADSPA_BASE "hasSetting", sizeof(buf));
p.predicate = buf;
p.object = setting_uri_copy;
lrdf_remove_matches(&p);
p.subject = setting_uri_copy;
p.predicate = NULL;
p.object = NULL;
lrdf_remove_matches (&p);
}
#endif
void
LadspaPlugin::do_remove_preset (string name)
{
#ifdef HAVE_LRDF
Plugin::PresetRecord const * p = preset_by_label (name);
if (!p) {
return;
}
string const source = preset_source ();
lrdf_remove_preset (source.c_str(), p->uri.c_str ());
write_preset_file ();
#endif
}
string
LadspaPlugin::preset_source () const
{
string const domain = "ladspa";
#ifdef PLATFORM_WINDOWS
string path = Glib::build_filename (ARDOUR::user_cache_directory (), domain, "rdf", "ardour-presets.n3");
#else
string path = Glib::build_filename (Glib::get_home_dir (), "." + domain, "rdf", "ardour-presets.n3");
#endif
return Glib::filename_to_uri (path);
}
bool
LadspaPlugin::write_preset_file ()
{
#ifdef HAVE_LRDF
#ifndef PLATFORM_WINDOWS
if (Glib::get_home_dir ().empty ()) {
warning << _("Could not locate HOME. Preset file not written.") << endmsg;
return false;
}
#endif
string const source = preset_source ();
string const filename = Glib::filename_from_uri (source);
if (g_mkdir_with_parents (Glib::path_get_dirname (filename).c_str(), 0775)) {
warning << string_compose(_("Could not create %1. Preset not saved. (%2)"), source, strerror(errno)) << endmsg;
return false;
}
if (lrdf_export_by_source (source.c_str(), filename.c_str())) {
warning << string_compose(_("Error saving presets file %1."), source) << endmsg;
return false;
}
return true;
#else
return false;
#endif
}
string
LadspaPlugin::do_save_preset (string name)
{
#ifdef HAVE_LRDF
do_remove_preset (name);
/* make a vector of pids that are input parameters */
vector<int> input_parameter_pids;
for (uint32_t i = 0; i < parameter_count(); ++i) {
if (parameter_is_input (i)) {
input_parameter_pids.push_back (i);
}
}
std::string unique (unique_id());
if (!isdigit (unique[0])) {
return "";
}
uint32_t const id = atol (unique.c_str());
lrdf_defaults defaults;
defaults.count = input_parameter_pids.size ();
std::vector<lrdf_portvalue> portvalues(input_parameter_pids.size());
defaults.items = &portvalues[0];
for (vector<int>::size_type i = 0; i < input_parameter_pids.size(); ++i) {
portvalues[i].pid = input_parameter_pids[i];
portvalues[i].value = get_parameter (input_parameter_pids[i]);
}
string const source = preset_source ();
char* uri_char = lrdf_add_preset (source.c_str(), name.c_str(), id, &defaults);
string uri (uri_char);
free (uri_char);
if (!write_preset_file ()) {
return "";
}
return uri;
#else
return string();
#endif
}
LADSPA_PortDescriptor
LadspaPlugin::port_descriptor (uint32_t i) const
{
if (i < _descriptor->PortCount) {
return _descriptor->PortDescriptors[i];
}
warning << "LADSPA plugin port index " << i << " out of range." << endmsg;
return 0;
}
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