diff options
Diffstat (limited to 'libs/ardour/vst_plugin.cc')
-rw-r--r-- | libs/ardour/vst_plugin.cc | 489 |
1 files changed, 489 insertions, 0 deletions
diff --git a/libs/ardour/vst_plugin.cc b/libs/ardour/vst_plugin.cc new file mode 100644 index 0000000000..6465344d6e --- /dev/null +++ b/libs/ardour/vst_plugin.cc @@ -0,0 +1,489 @@ +/* + Copyright (C) 2004 Paul Davis + + 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., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id$ +*/ + +#include <algorithm> +#include <vector> +#include <string> +#include <ctype.h> + +#include <cstdlib> +#include <cstdio> // so libraptor doesn't complain +#include <cmath> +#include <dirent.h> +#include <string.h> // for memmove +#include <sys/stat.h> +#include <cerrno> + +#include <lrdf.h> +#include <fst.h> + +#include <pbd/compose.h> +#include <pbd/error.h> +#include <pbd/pathscanner.h> +#include <pbd/xml++.h> + +#include <vst/aeffectx.h> + +#include <midi++/manager.h> + +#include <ardour/ardour.h> +#include <ardour/session.h> +#include <ardour/audioengine.h> +#include <ardour/vst_plugin.h> + +#include <pbd/stl_delete.h> + +#include "i18n.h" +#include <locale.h> + +using namespace ARDOUR; +using std::min; +using std::max; + +VSTPlugin::VSTPlugin (AudioEngine& e, Session& session, FSTHandle* h) + : Plugin (e, session) +{ + handle = h; + + if ((_fst = fst_instantiate (handle, Session::vst_callback, this)) == 0) { + throw failed_constructor(); + } + + _plugin = _fst->plugin; + _plugin->user = this; + + /* set rate and blocksize */ + + _plugin->dispatcher (_plugin, effSetSampleRate, 0, 0, NULL, + (float) session.frame_rate()); + _plugin->dispatcher (_plugin, effSetBlockSize, 0, + session.get_block_size(), NULL, 0.0f); + + /* set program to zero */ + + _plugin->dispatcher (_plugin, effSetProgram, 0, 0, NULL, 0.0f); + + Plugin::setup_midi_controls (); +} + +VSTPlugin::VSTPlugin (const VSTPlugin &other) + : Plugin (other) +{ + handle = other.handle; + + if ((_fst = fst_instantiate (handle, Session::vst_callback, this)) == 0) { + throw failed_constructor(); + } + _plugin = _fst->plugin; + + Plugin::setup_midi_controls (); +} + +VSTPlugin::~VSTPlugin () +{ + deactivate (); + GoingAway (this); /* EMIT SIGNAL */ + fst_close (_fst); +} + +void +VSTPlugin::set_block_size (jack_nframes_t nframes) +{ + deactivate (); + _plugin->dispatcher (_plugin, effSetBlockSize, 0, nframes, NULL, 0.0f); + activate (); +} + +void +VSTPlugin::store_state (PluginState& state) +{ +} + +void +VSTPlugin::restore_state (PluginState& state) +{ +} + +float +VSTPlugin::default_value (uint32_t port) +{ + return 0; +} + +void +VSTPlugin::set_parameter (uint32_t which, float val) +{ + _plugin->setParameter (_plugin, which, val); + ParameterChanged (which, val); /* EMIT SIGNAL */ + + if (session().get_midi_feedback()) { + + if (which < parameter_count() && midi_controls[which]) { + midi_controls[which]->send_feedback (val); + } + } +} + +float +VSTPlugin::get_parameter (uint32_t which) const +{ + return _plugin->getParameter (_plugin, which); + +} + +uint32_t +VSTPlugin::nth_parameter (uint32_t n, bool& ok) const +{ + ok = true; + return n; +} + +XMLNode& +VSTPlugin::get_state() +{ + XMLNode *root = new XMLNode (state_node_name()); + LocaleGuard lg (X_("POSIX")); + + if (_plugin->flags & effFlagsProgramChunks) { + + /* fetch the current chunk */ + + void* data; + long data_size; + + if ((data_size = _plugin->dispatcher (_plugin, effGetChunk, 0, 0, &data, false)) == 0) { + return *root; + } + + /* save it to a file */ + + string path; + struct stat sbuf; + + path = getenv ("HOME"); + path += "/.ardour/vst"; + + if (stat (path.c_str(), &sbuf)) { + if (errno == ENOENT) { + if (mkdir (path.c_str(), 0600)) { + error << compose (_("cannot create VST chunk directory: %1"), + strerror (errno)) + << endmsg; + return *root; + } + + } else { + + error << compose (_("cannot check VST chunk directory: %1"), + strerror (errno)) + << endmsg; + return *root; + } + + } else if (!S_ISDIR (sbuf.st_mode)) { + error << compose (_("%1 exists but is not a directory"), path) + << endmsg; + return *root; + } + + path += "something"; + + /* store information */ + + XMLNode* chunk_node = new XMLNode (X_("chunk")); + chunk_node->add_property ("path", path); + + root->add_child_nocopy (*chunk_node); + + } else { + + XMLNode* parameters = new XMLNode ("parameters"); + + for (long n = 0; n < _plugin->numParams; ++n) { + char index[64]; + char val[32]; + snprintf (index, sizeof (index), "param_%ld", n); + snprintf (val, sizeof (val), "%f", _plugin->getParameter (_plugin, n)); + parameters->add_property (index, val); + } + + root->add_child_nocopy (*parameters); + } + + return *root; +} + +int +VSTPlugin::set_state(const XMLNode& node) +{ + LocaleGuard lg (X_("POSIX")); + + if (node.name() != state_node_name()) { + error << _("Bad node sent to VSTPlugin::set_state") << endmsg; + return 0; + } + + XMLNode* child; + + if ((child = find_named_node (node, X_("chunks"))) != 0) { + + return 0; + + } else if ((child = find_named_node (node, X_("parameters"))) != 0) { + + XMLPropertyList::const_iterator i; + + for (i = child->properties().begin(); i != child->properties().end(); ++i) { + long param; + float val; + sscanf ((*i)->name().c_str(), "param_%ld", ¶m); + sscanf ((*i)->value().c_str(), "%f", &val); + + _plugin->setParameter (_plugin, param, val); + } + + return 0; + } + + return -1; +} + +int +VSTPlugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc) const +{ + VstParameterProperties prop; + + desc.min_unbound = false; + desc.max_unbound = false; + + if (_plugin->dispatcher (_plugin, effGetParameterProperties, which, 0, &prop, 0)) { + + /* i have yet to find or hear of a VST plugin that uses this */ + + if (prop.flags & kVstParameterUsesIntegerMinMax) { + desc.lower = prop.minInteger; + desc.upper = prop.maxInteger; + } else { + desc.lower = 0; + desc.upper = 1.0; + } + + if (prop.flags & kVstParameterUsesIntStep) { + + desc.step = prop.stepInteger; + desc.smallstep = prop.stepInteger; + desc.largestep = prop.stepInteger; + + } else if (prop.flags & kVstParameterUsesFloatStep) { + + desc.step = prop.stepFloat; + desc.smallstep = prop.smallStepFloat; + desc.largestep = prop.largeStepFloat; + + } else { + + float range = desc.upper - desc.lower; + + desc.step = range / 100.0f; + desc.smallstep = desc.step / 2.0f; + desc.largestep = desc.step * 10.0f; + } + + desc.toggled = prop.flags & kVstParameterIsSwitch; + desc.logarithmic = false; + desc.sr_dependent = false; + desc.label = prop.label; + + } else { + + /* old style */ + + char label[64]; + label[0] = '\0'; + + _plugin->dispatcher (_plugin, effGetParamName, which, 0, label, 0); + + desc.label = label; + desc.integer_step = false; + desc.lower = 0.0f; + desc.upper = 1.0f; + desc.step = 0.01f; + desc.smallstep = 0.005f; + desc.largestep = 0.1f; + desc.toggled = false; + desc.logarithmic = false; + desc.sr_dependent = false; + } + + return 0; +} + +bool +VSTPlugin::load_preset (string name) +{ + if (_plugin->flags & effFlagsProgramChunks) { + error << _("no support for presets using chunks at this time") + << endmsg; + return false; + } + return Plugin::load_preset (name); +} + +bool +VSTPlugin::save_preset (string name) +{ + if (_plugin->flags & effFlagsProgramChunks) { + error << _("no support for presets using chunks at this time") + << endmsg; + return false; + } + return Plugin::save_preset (name, "vst"); +} + +string +VSTPlugin::describe_parameter (uint32_t param) +{ + char name[64]; + _plugin->dispatcher (_plugin, effGetParamName, param, 0, name, 0); + return name; +} + +jack_nframes_t +VSTPlugin::latency () const +{ + return _plugin->initialDelay; +} + +set<uint32_t> +VSTPlugin::automatable () const +{ + set<uint32_t> ret; + + for (uint32_t i = 0; i < parameter_count(); ++i){ + ret.insert (ret.end(), i); + } + + return ret; +} + +int +VSTPlugin::connect_and_run (vector<Sample*>& bufs, uint32_t maxbuf, int32_t& in_index, int32_t& out_index, jack_nframes_t nframes, jack_nframes_t offset) +{ + float *ins[_plugin->numInputs]; + float *outs[_plugin->numOutputs]; + int32_t i; + + for (i = 0; i < (int32_t) _plugin->numInputs; ++i) { + ins[i] = bufs[min((uint32_t) in_index,maxbuf)]; + in_index++; + } + + for (i = 0; i < (int32_t) _plugin->numOutputs; ++i) { + outs[i] = bufs[min((uint32_t) out_index,maxbuf)]; + + /* unbelievably, several VST plugins still rely on Cubase + behaviour and do not silence the buffer in processReplacing + when they have no output. + */ + + // memset (outs[i], 0, sizeof (Sample) * nframes); + out_index++; + } + + + /* we already know it can support processReplacing */ + + _plugin->processReplacing (_plugin, ins, outs, nframes); + + return 0; +} + +void +VSTPlugin::deactivate () +{ + _plugin->dispatcher (_plugin, effMainsChanged, 0, 0, NULL, 0.0f); +} + +void +VSTPlugin::activate () +{ + _plugin->dispatcher (_plugin, effMainsChanged, 0, 1, NULL, 0.0f); +} + +uint32_t +VSTPlugin::unique_id() const +{ + return _plugin->uniqueID; +} + + +const char * +VSTPlugin::name () const +{ + return handle->name; +} + +const char * +VSTPlugin::maker () const +{ + return "imadeit"; +} + +const char * +VSTPlugin::label () const +{ + return handle->name; +} + +uint32_t +VSTPlugin::parameter_count() const +{ + return _plugin->numParams; +} + +bool +VSTPlugin::has_editor () const +{ + return _plugin->flags & effFlagsHasEditor; +} + +void +VSTPlugin::print_parameter (uint32_t param, char *buf, uint32_t len) const +{ + char lab[9]; + char *first_nonws; + + _plugin->dispatcher (_plugin, effGetParamLabel, param, 0, lab, 0); + _plugin->dispatcher (_plugin, effGetParamDisplay, param, 0, buf, 0); + + if (buf[0] == '\0') { + return; + } + + first_nonws = buf; + while (*first_nonws && isspace (*first_nonws)) { + first_nonws++; + } + if (*first_nonws == '\0') { + return; + } + + memmove (buf, first_nonws, strlen (buf) - (first_nonws - buf) + 1); +} |