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livetrax/libs/ardour/vst_plugin.cc
Paul Davis b35518e212 switch from boost::{shared,weak}_ptr to std::{shared,weak}_ptr
This is mostly a simple lexical search+replace but the absence of operator< for
std::weak_ptr<T> leads to some complications, particularly with Evoral::Sequence
and ExportPortChannel.
2023-03-24 14:19:15 -06:00

985 lines
24 KiB
C++

/*
* Copyright (C) 2005-2006 Sampo Savolainen <v2@iki.fi>
* Copyright (C) 2005-2006 Taybin Rutkin <taybin@taybin.com>
* Copyright (C) 2005-2018 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2007-2011 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2007-2011 David Robillard <d@drobilla.net>
* Copyright (C) 2007-2016 Tim Mayberry <mojofunk@gmail.com>
* Copyright (C) 2013-2015 John Emmas <john@creativepost.co.uk>
* Copyright (C) 2014-2019 Robin Gareus <robin@gareus.org>
*
* 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.
*/
#include <glib.h>
#include "pbd/gstdio_compat.h"
#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>
#include <glibmm/convert.h>
#include "pbd/floating.h"
#include "pbd/locale_guard.h"
#include "ardour/vst_types.h"
#include "ardour/vst_plugin.h"
#include "ardour/vst2_scan.h"
#include "ardour/vestige/vestige.h"
#include "ardour/session.h"
#include "ardour/filesystem_paths.h"
#include "ardour/audio_buffer.h"
#include "ardour/plugin_insert.h"
#include "pbd/i18n.h"
using namespace std;
using namespace PBD;
using namespace ARDOUR;
VSTPlugin::VSTPlugin (AudioEngine& engine, Session& session, VSTHandle* handle)
: Plugin (engine, session)
, _handle (handle)
, _state (0)
, _plugin (0)
, _transport_sample (0)
, _transport_speed (0.f)
, _eff_bypassed (false)
{
memset (&_timeInfo, 0, sizeof(_timeInfo));
}
VSTPlugin::VSTPlugin (const VSTPlugin& other)
: Plugin (other)
, _handle (other._handle)
, _state (other._state)
, _plugin (other._plugin)
, _midi_out_buf (other._midi_out_buf)
, _transport_sample (0)
, _transport_speed (0.f)
, _parameter_defaults (other._parameter_defaults)
, _eff_bypassed (other._eff_bypassed)
{
memset (&_timeInfo, 0, sizeof(_timeInfo));
}
VSTPlugin::~VSTPlugin ()
{
}
void
VSTPlugin::open_plugin ()
{
_plugin = _state->plugin;
assert (_plugin->ptr1 == this); // should have been set by {mac_vst|fst|lxvst}_instantiate
_plugin->ptr1 = this;
_state->plugin->dispatcher (_plugin, effOpen, 0, 0, 0, 0);
_state->vst_version = _plugin->dispatcher (_plugin, effGetVstVersion, 0, 0, 0, 0);
}
void
VSTPlugin::init_plugin ()
{
/* set rate and blocksize */
_plugin->dispatcher (_plugin, effSetSampleRate, 0, 0, NULL, (float) _session.sample_rate());
_plugin->dispatcher (_plugin, effSetBlockSize, 0, _session.get_block_size(), NULL, 0.0f);
}
uint32_t
VSTPlugin::designated_bypass_port ()
{
if (_plugin->dispatcher (_plugin, effCanDo, 0, 0, const_cast<char*> ("bypass"), 0.0f) != 0) {
#ifdef ALLOW_VST_BYPASS_TO_FAIL // yet unused, see also plugin_insert.cc
return UINT32_MAX - 1; // emulate a port
#else
/* check if plugin actually supports it,
* e.g. u-he Presswerk CanDo "bypass" but calling effSetBypass is a NO-OP.
* (presumably the plugin-author thinks hard-bypassing is a bad idea,
* particularly since the plugin itself provides a bypass-port)
*/
intptr_t value = 0; // not bypassed
if (0 != _plugin->dispatcher (_plugin, 44 /*effSetBypass*/, 0, value, NULL, 0)) {
cerr << "Emulate VST Bypass Port for " << name() << endl; // XXX DEBUG
return UINT32_MAX - 1; // emulate a port
} else {
cerr << "Do *not* Emulate VST Bypass Port for " << name() << endl; // XXX DEBUG
}
#endif
}
return UINT32_MAX;
}
void
VSTPlugin::deactivate ()
{
_plugin->dispatcher (_plugin, effMainsChanged, 0, 0, NULL, 0.0f);
}
void
VSTPlugin::activate ()
{
_plugin->dispatcher (_plugin, effMainsChanged, 0, 1, NULL, 0.0f);
}
int
VSTPlugin::set_block_size (pframes_t nframes)
{
deactivate ();
_plugin->dispatcher (_plugin, effSetBlockSize, 0, nframes, NULL, 0.0f);
activate ();
return 0;
}
bool
VSTPlugin::requires_fixed_sized_buffers () const
{
/* This controls if Ardour will split the plugin's run()
* on automation events in order to pass sample-accurate automation
* via standard control-ports.
*
* When returning true Ardour will *not* sub-divide the process-cycle.
* Automation events that happen between cycle-start and cycle-end will be
* ignored (ctrl values are interpolated to cycle-start).
*
* Note: This does not guarantee a fixed block-size.
* e.g The process cycle may be split when looping, also
* the period-size may change any time: see set_block_size()
*/
if (get_info()->n_inputs.n_midi() > 0) {
/* we don't yet implement midi buffer offsets (for split cycles).
* Also session_vst callbacls uses _session.transport_sample() directly
* (for BBT) which is not offset for plugin cycle split.
*/
return true;
}
return false;
}
float
VSTPlugin::default_value (uint32_t which)
{
return _parameter_defaults[which];
}
float
VSTPlugin::get_parameter (uint32_t which) const
{
if (which == UINT32_MAX - 1) {
// ardour uses enable-semantics: 1: enabled, 0: bypassed
return _eff_bypassed ? 0.f : 1.f;
}
return _plugin->getParameter (_plugin, which);
}
void
VSTPlugin::set_parameter (uint32_t which, float newval, sampleoffset_t when)
{
if (which == UINT32_MAX - 1) {
// ardour uses enable-semantics: 1: enabled, 0: bypassed
intptr_t value = (newval <= 0.f) ? 1 : 0;
cerr << "effSetBypass " << value << endl; // XXX DEBUG
int rv = _plugin->dispatcher (_plugin, 44 /*effSetBypass*/, 0, value, NULL, 0);
if (0 != rv) {
_eff_bypassed = (value == 1);
} else {
cerr << "effSetBypass failed rv=" << rv << endl; // XXX DEBUG
#ifdef ALLOW_VST_BYPASS_TO_FAIL // yet unused, see also vst_plugin.cc
// emit signal.. hard un/bypass from here?!
#endif
}
return;
}
float oldval = get_parameter (which);
if (PBD::floateq (oldval, newval, 1)) {
return;
}
_plugin->setParameter (_plugin, which, newval);
float curval = get_parameter (which);
if (!PBD::floateq (curval, oldval, 1)) {
/* value has changed, follow rest of the notification path */
Plugin::set_parameter (which, newval, when);
}
}
void
VSTPlugin::parameter_changed_externally (uint32_t which, float value)
{
ParameterChangedExternally (which, value); /* EMIT SIGNAL */
Plugin::set_parameter (which, value, 0);
}
uint32_t
VSTPlugin::nth_parameter (uint32_t n, bool& ok) const
{
ok = true;
return n;
}
/** Get VST chunk as base64-encoded data.
* @param single true for single program, false for all programs.
* @return 0-terminated base64-encoded data; must be passed to g_free () by caller.
*/
gchar *
VSTPlugin::get_chunk (bool single) const
{
guchar* data;
int32_t data_size = _plugin->dispatcher (_plugin, 23 /* effGetChunk */, single ? 1 : 0, 0, &data, 0);
if (data_size == 0) {
return 0;
}
return g_base64_encode (data, data_size);
}
/** Set VST chunk from base64-encoded data.
* @param 0-terminated base64-encoded data.
* @param single true for single program, false for all programs.
* @return 0 on success, non-0 on failure
*/
int
VSTPlugin::set_chunk (gchar const * data, bool single)
{
gsize size = 0;
int r = 0;
guchar* raw_data = g_base64_decode (data, &size);
{
pthread_mutex_lock (&_state->state_lock);
r = _plugin->dispatcher (_plugin, 24 /* effSetChunk */, single ? 1 : 0, size, raw_data, 0);
pthread_mutex_unlock (&_state->state_lock);
}
g_free (raw_data);
return r;
}
void
VSTPlugin::add_state (XMLNode* root) const
{
LocaleGuard lg;
if (_plugin->flags & 32 /* effFlagsProgramsChunks */) {
gchar* data = get_chunk (false);
if (data == 0) {
return;
}
/* store information */
XMLNode* chunk_node = new XMLNode (X_("chunk"));
chunk_node->add_content (data);
g_free (data);
chunk_node->set_property ("program", (int) _plugin->dispatcher (_plugin, effGetProgram, 0, 0, NULL, 0));
root->add_child_nocopy (*chunk_node);
} else {
XMLNode* parameters = new XMLNode ("parameters");
for (int32_t n = 0; n < _plugin->numParams; ++n) {
char index[64];
snprintf (index, sizeof (index), "param-%d", n);
parameters->set_property (index, _plugin->getParameter (_plugin, n));
}
root->add_child_nocopy (*parameters);
}
}
int
VSTPlugin::set_state (const XMLNode& node, int version)
{
LocaleGuard lg;
int ret = -1;
XMLNode* child;
if ((child = find_named_node (node, X_("chunk"))) != 0) {
int pgm = -1;
if (child->get_property (X_("program"), pgm)) {
_plugin->dispatcher (_plugin, effSetProgram, 0, pgm, NULL, 0);
};
XMLNodeList::const_iterator n;
for (n = child->children ().begin (); n != child->children ().end (); ++n) {
if ((*n)->is_content ()) {
/* XXX: this may be dubious for the same reasons that we delay
execution of load_preset.
*/
ret = set_chunk ((*n)->content().c_str(), false);
}
}
} else if ((child = find_named_node (node, X_("parameters"))) != 0) {
XMLPropertyList::const_iterator i;
for (i = child->properties().begin(); i != child->properties().end(); ++i) {
int32_t param;
sscanf ((*i)->name().c_str(), "param-%d", &param);
float value = string_to<float>((*i)->value());
_plugin->setParameter (_plugin, param, value);
}
ret = 0;
}
Plugin::set_state (node, version);
return ret;
}
int
VSTPlugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc) const
{
VstParameterProperties prop;
memset (&prop, 0, sizeof (VstParameterProperties));
prop.flags = 0;
if (_plugin->dispatcher (_plugin, effGetParameterProperties, which, 0, &prop, 0)) {
/* i have yet to find or hear of a VST plugin that uses this */
/* RG: faust2vsti does use this :) */
if (prop.flags & kVstParameterUsesIntegerMinMax) {
desc.lower = prop.minInteger;
desc.upper = prop.maxInteger;
} else {
desc.lower = 0;
desc.upper = 1.0;
}
const float range = desc.upper - desc.lower;
if (prop.flags & kVstParameterUsesIntStep && prop.stepInteger < range) {
desc.step = prop.stepInteger;
desc.smallstep = prop.stepInteger;
desc.largestep = prop.stepInteger;
desc.integer_step = true;
desc.rangesteps = 1 + ceilf (range / desc.step);
} else if (prop.flags & kVstParameterUsesFloatStep && prop.stepFloat < range) {
desc.step = prop.stepFloat;
desc.smallstep = prop.smallStepFloat;
desc.largestep = prop.largeStepFloat;
desc.rangesteps = 1 + ceilf (range / desc.step);
} else {
desc.smallstep = desc.step = range / 300.0f;
desc.largestep = range / 30.0f;
}
if (strlen(prop.label) == 0) {
_plugin->dispatcher (_plugin, effGetParamName, which, 0, prop.label, 0);
}
desc.toggled = prop.flags & kVstParameterIsSwitch;
desc.label = Glib::locale_to_utf8 (prop.label);
} else {
/* old style */
char pname[VestigeMaxLabelLen];
/* some VST plugins expect this buffer to be zero-filled */
memset (pname, 0, sizeof (pname));
_plugin->dispatcher (_plugin, effGetParamName, which, 0, pname, 0);
desc.label = Glib::locale_to_utf8 (pname);
desc.lower = 0.0f;
desc.upper = 1.0f;
desc.smallstep = desc.step = 1.f / 300.f;
desc.largestep = 1.f / 30.f;
}
/* TODO we should really call
* desc.update_steps ()
* instead of manually assigning steps. Yet, VST prop is (again)
* the odd one out compared to other plugin formats.
*/
if (_parameter_defaults.find (which) == _parameter_defaults.end ()) {
_parameter_defaults[which] = get_parameter (which);
}
desc.normal = _parameter_defaults[which];
return 0;
}
bool
VSTPlugin::load_preset (PresetRecord r)
{
bool s;
if (r.user) {
s = load_user_preset (r);
} else {
s = load_plugin_preset (r);
}
if (s) {
Plugin::load_preset (r);
}
return s;
}
bool
VSTPlugin::load_plugin_preset (PresetRecord r)
{
/* This is a plugin-provided preset.
We can't dispatch directly here; too many plugins expects only one GUI thread.
*/
/* Extract the index of this preset from the URI */
int id;
int index;
#ifndef NDEBUG
int const p = sscanf (r.uri.c_str(), "VST:%d:%d", &id, &index);
assert (p == 2);
#else
sscanf (r.uri.c_str(), "VST:%d:%d", &id, &index);
#endif
_state->want_program = index;
if (!has_editor () || 0 == plugin_insert ()->window_proxy ()) {
vststate_maybe_set_program (_state);
_state->want_chunk = 0;
_state->want_program = -1;
} else {
LoadPresetProgram (); /* EMIT SIGNAL */ /* used for macvst */
}
return true;
}
bool
VSTPlugin::load_user_preset (PresetRecord r)
{
/* This is a user preset; we load it, and this code also knows about the
non-direct-dispatch thing.
*/
std::shared_ptr<XMLTree> t (presets_tree ());
if (t == 0) {
return false;
}
XMLNode* root = t->root ();
for (XMLNodeList::const_iterator i = root->children().begin(); i != root->children().end(); ++i) {
std::string label;
(*i)->get_property (X_("label"), label);
if (label != r.label) {
continue;
}
if (_plugin->flags & 32 /* effFlagsProgramsChunks */) {
/* Load a user preset chunk from our XML file and send it via a circuitous route to the plugin */
if (_state->wanted_chunk) {
g_free (_state->wanted_chunk);
}
for (XMLNodeList::const_iterator j = (*i)->children().begin(); j != (*i)->children().end(); ++j) {
if ((*j)->is_content ()) {
/* we can't dispatch directly here; too many plugins expect only one GUI thread */
gsize size = 0;
guchar* raw_data = g_base64_decode ((*j)->content().c_str(), &size);
_state->wanted_chunk = raw_data;
_state->wanted_chunk_size = size;
_state->want_chunk = 1;
if (!has_editor () || (plugin_insert () && 0 == plugin_insert ()->window_proxy ())) {
vststate_maybe_set_program (_state);
_state->want_chunk = 0;
_state->want_program = -1;
} else {
LoadPresetProgram (); /* EMIT SIGNAL */ /* used for macvst */
}
return true;
}
}
return false;
} else {
for (XMLNodeList::const_iterator j = (*i)->children().begin(); j != (*i)->children().end(); ++j) {
if ((*j)->name() == X_("Parameter")) {
uint32_t index;
float value;
if (!(*j)->get_property (X_("index"), index) ||
!(*j)->get_property (X_("value"), value)) {
assert (false);
// flag error and continue?
continue;
}
set_parameter (index, value, 0);
PresetPortSetValue (index, value); /* EMIT SIGNAL */
}
}
return true;
}
}
return false;
}
#include "sha1.c"
string
VSTPlugin::do_save_preset (string name)
{
std::shared_ptr<XMLTree> t (presets_tree ());
if (t == 0) {
return "";
}
// prevent dups -- just in case
t->root()->remove_nodes_and_delete (X_("label"), name);
XMLNode* p = 0;
char tmp[32];
snprintf (tmp, 31, "%ld", _presets.size() + 1);
tmp[31] = 0;
char hash[41];
Sha1Digest s;
sha1_init (&s);
sha1_write (&s, (const uint8_t *) name.c_str(), name.size ());
sha1_write (&s, (const uint8_t *) tmp, strlen(tmp));
sha1_result_hash (&s, hash);
string const uri = string_compose (X_("VST:%1:x%2"), unique_id (), hash);
if (_plugin->flags & 32 /* effFlagsProgramsChunks */) {
p = new XMLNode (X_("ChunkPreset"));
} else {
p = new XMLNode (X_("Preset"));
}
p->set_property (X_("uri"), uri);
p->set_property (X_("version"), version ());
p->set_property (X_("label"), name);
p->set_property (X_("numParams"), parameter_count ());
if (_plugin->flags & 32) {
gchar* data = get_chunk (true);
p->add_content (string (data));
g_free (data);
} else {
for (uint32_t i = 0; i < parameter_count(); ++i) {
if (parameter_is_input (i)) {
XMLNode* c = new XMLNode (X_("Parameter"));
c->set_property (X_("index"), i);
c->set_property (X_("value"), get_parameter (i));
p->add_child_nocopy (*c);
}
}
}
t->root()->add_child_nocopy (*p);
std::string f = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
f = Glib::build_filename (f, presets_file ());
t->write (f);
return uri;
}
void
VSTPlugin::do_remove_preset (string name)
{
std::shared_ptr<XMLTree> t (presets_tree ());
if (t == 0) {
return;
}
t->root()->remove_nodes_and_delete (X_("label"), name);
std::string f = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
f = Glib::build_filename (f, presets_file ());
t->write (f);
}
string
VSTPlugin::describe_parameter (Evoral::Parameter param)
{
char name[VestigeMaxLabelLen];
if (param.id() == UINT32_MAX - 1) {
strcpy (name, _("Plugin Enable"));
return name;
}
memset (name, 0, sizeof (name));
/* some VST plugins expect this buffer to be zero-filled */
_plugin->dispatcher (_plugin, effGetParamName, param.id(), 0, name, 0);
if (name[0] == '\0') {
strcpy (name, _("Unknown"));
}
return name;
}
samplecnt_t
VSTPlugin::plugin_latency () const
{
#if ( defined(__x86_64__) || defined(_M_X64) )
return *((int32_t *) (((char *) &_plugin->flags) + 24)); /* initialDelay */
#else
return *((int32_t *) (((char *) &_plugin->flags) + 12)); /* initialDelay */
#endif
}
set<Evoral::Parameter>
VSTPlugin::automatable () const
{
set<Evoral::Parameter> ret;
for (uint32_t i = 0; i < parameter_count(); ++i) {
if (_plugin->dispatcher (_plugin, effCanBeAutomated, i, 0, NULL, 0)) {
ret.insert (ret.end(), Evoral::Parameter(PluginAutomation, 0, i));
}
}
return ret;
}
int
VSTPlugin::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);
if (pthread_mutex_trylock (&_state->state_lock)) {
/* by convention 'effSetChunk' should not be called while processing
* http://www.reaper.fm/sdk/vst/vst_ext.php
*
* All VSTs don't use in-place, PluginInsert::connect_and_run()
* does clear output buffers, so we can just return.
*/
return 0;
}
/* remain at zero during pre-roll at zero */
_transport_speed = end > 0 ? speed : 0;
_transport_sample = std::max (samplepos_t (0), start);
ChanCount bufs_count;
bufs_count.set(DataType::AUDIO, 1);
bufs_count.set(DataType::MIDI, 1);
_midi_out_buf = 0;
BufferSet& silent_bufs = _session.get_silent_buffers(bufs_count);
BufferSet& scratch_bufs = _session.get_scratch_buffers(bufs_count);
/* VC++ doesn't support the C99 extension that allows
typeName foo[variableDefiningSize];
Use alloca instead of dynamic array (rather than std::vector which
allocs on the heap) because this is realtime code.
*/
float** ins = (float**)alloca(_plugin->numInputs*sizeof(float*));
float** outs = (float**)alloca(_plugin->numOutputs*sizeof(float*));
int32_t i;
uint32_t in_index = 0;
for (i = 0; i < (int32_t) _plugin->numInputs; ++i) {
uint32_t index;
bool valid = false;
index = in_map.get(DataType::AUDIO, in_index++, &valid);
ins[i] = (valid)
? bufs.get_audio(index).data(offset)
: silent_bufs.get_audio(0).data(offset);
}
uint32_t out_index = 0;
for (i = 0; i < (int32_t) _plugin->numOutputs; ++i) {
uint32_t index;
bool valid = false;
index = out_map.get(DataType::AUDIO, out_index++, &valid);
outs[i] = (valid)
? bufs.get_audio(index).data(offset)
: scratch_bufs.get_audio(0).data(offset);
}
if (bufs.count().n_midi() > 0) {
VstEvents* v = 0;
bool valid = false;
const uint32_t buf_index_in = in_map.get(DataType::MIDI, 0, &valid);
/* TODO: apply offset to MIDI buffer and trim at nframes */
if (valid) {
v = bufs.get_vst_midi (buf_index_in);
}
valid = false;
const uint32_t buf_index_out = out_map.get(DataType::MIDI, 0, &valid);
if (valid) {
_midi_out_buf = &bufs.get_midi(buf_index_out);
/* TODO: apply offset to MIDI buffer and trim at nframes */
_midi_out_buf->silence(nframes, offset);
} else {
_midi_out_buf = 0;
}
if (v) {
_plugin->dispatcher (_plugin, effProcessEvents, 0, 0, v, 0);
}
}
/* we already know it can support processReplacing */
_plugin->processReplacing (_plugin, &ins[0], &outs[0], nframes);
_midi_out_buf = 0;
pthread_mutex_unlock (&_state->state_lock);
return 0;
}
string
VSTPlugin::unique_id () const
{
char buf[32];
snprintf (buf, sizeof (buf), "%d", _plugin->uniqueID);
return string (buf);
}
const char *
VSTPlugin::name () const
{
if (!_info->name.empty ()) {
return _info->name.c_str();
}
return _handle->name;
}
const char *
VSTPlugin::maker () const
{
return _info->creator.c_str();
}
const char *
VSTPlugin::label () const
{
return _handle->name;
}
int32_t
VSTPlugin::version () const
{
return _plugin->version;
}
uint32_t
VSTPlugin::parameter_count () const
{
return _plugin->numParams;
}
bool
VSTPlugin::has_editor () const
{
return _plugin->flags & effFlagsHasEditor;
}
bool
VSTPlugin::print_parameter (uint32_t param, std::string& rv) const
{
char buf[64];
size_t len = sizeof(buf);
assert (len > VestigeMaxShortLabelLen);
memset (buf, 0, len);
_plugin->dispatcher (_plugin, 7 /* effGetParamDisplay */, param, 0, buf, 0);
if (buf[0] == '\0') {
return false;
}
buf[len - 1] = '\0';
char* first_nonws = buf;
while (*first_nonws && isspace (*first_nonws)) {
++first_nonws;
}
if (*first_nonws == '\0') {
return false;
}
memmove (buf, first_nonws, strlen (buf) - (first_nonws - buf) + 1);
/* optional Unit label */
char label[VestigeMaxNameLen];
memset (label, 0, sizeof (label));
_plugin->dispatcher (_plugin, 6 /* effGetParamLabel */, param, 0, label, 0);
if (strlen (label) > 0) {
std::string lbl = std::string (" ") + Glib::locale_to_utf8 (label);
strncat (buf, lbl.c_str(), strlen (buf) - 1);
}
rv = std::string (buf);
return true;
}
void
VSTPlugin::find_presets ()
{
/* Built-in presets */
int const vst_version = _plugin->dispatcher (_plugin, effGetVstVersion, 0, 0, NULL, 0);
for (int i = 0; i < _plugin->numPrograms; ++i) {
PresetRecord r (string_compose (X_("VST:%1:%2"), unique_id (), std::setw(4), std::setfill('0'), i), "", false);
if (vst_version >= 2) {
char buf[256];
if (_plugin->dispatcher (_plugin, 29, i, 0, buf, 0) == 1) {
r.label = buf;
} else {
r.label = string_compose (_("Preset %1"), i);
}
} else {
r.label = string_compose (_("Preset %1"), i);
}
_presets.insert (make_pair (r.uri, r));
}
/* User presets from our XML file */
std::shared_ptr<XMLTree> t (presets_tree ());
if (t) {
XMLNode* root = t->root ();
for (XMLNodeList::const_iterator i = root->children().begin(); i != root->children().end(); ++i) {
std::string uri;
std::string label;
if (!(*i)->get_property (X_("uri"), uri) || !(*i)->get_property (X_("label"), label)) {
assert(false);
}
PresetRecord r (uri, label, true);
_presets.insert (make_pair (r.uri, r));
}
}
}
/** @return XMLTree with our user presets; could be a new one if no existing
* one was found, or 0 if one was present but badly-formatted.
*/
XMLTree *
VSTPlugin::presets_tree () const
{
XMLTree* t = new XMLTree;
std::string p = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
if (!Glib::file_test (p, Glib::FILE_TEST_IS_DIR)) {
if (g_mkdir_with_parents (p.c_str(), 0755) != 0) {
error << _("Unable to make VST presets directory") << endmsg;
};
}
p = Glib::build_filename (p, presets_file ());
if (!Glib::file_test (p, Glib::FILE_TEST_EXISTS)) {
t->set_root (new XMLNode (X_("VSTPresets")));
return t;
}
t->set_filename (p);
if (!t->read ()) {
delete t;
return 0;
}
return t;
}
/** @return Index of the first user preset in our lists */
int
VSTPlugin::first_user_preset_index () const
{
return _plugin->numPrograms;
}
string
VSTPlugin::presets_file () const
{
return string("vst-") + unique_id ();
}
VSTPluginInfo::VSTPluginInfo (VST2Info const& nfo)
{
char buf[32];
snprintf (buf, sizeof (buf), "%d", nfo.id);
unique_id = buf;
index = 0;
name = nfo.name;
creator = nfo.creator;
category = nfo.category;
n_inputs.set_audio (nfo.n_inputs);
n_outputs.set_audio (nfo.n_outputs);
n_inputs.set_midi (nfo.n_midi_inputs);
n_outputs.set_midi (nfo.n_midi_outputs);
_is_instrument = nfo.is_instrument;
}
bool
VSTPluginInfo::is_instrument () const
{
if (_is_instrument) {
return true;
}
return PluginInfo::is_instrument ();
}