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livetrax/libs/ardour/unknown_processor.cc

209 lines
5.9 KiB
C++

/*
* Copyright (C) 2010-2011 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2013-2022 Robin Gareus <robin@gareus.org>
* Copyright (C) 2016-2017 Paul Davis <paul@linuxaudiosystems.com>
*
* 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 "pbd/types_convert.h"
#include "pbd/xml++.h"
#include "ardour/audio_buffer.h"
#include "ardour/sidechain.h"
#include "ardour/io.h"
#include "ardour/types_convert.h"
#include "ardour/unknown_processor.h"
#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
static std::string
proc_type_map (std::string const& str)
{
/* compare to PluginInsert::set_state */
if (str == X_("ladspa") || str == X_("Ladspa")) { /* handle old school sessions */
return "LV1";
} else if (str == X_("lv2")) {
return "LV2";
} else if (str == X_("windows-vst")) {
return "VST2";
} else if (str == X_("lxvst")) {
return "VST2";
} else if (str == X_("mac-vst")) {
return "VST2";
} else if (str == X_("audiounit")) {
return "AU";
} else if (str == X_("luaproc")) {
return "Lua";
} else if (str == X_("vst3")) {
return "VST3";
} else {
return str;
}
}
UnknownProcessor::UnknownProcessor (Session&s, XMLNode const &state, SessionObject* o)
: Processor (s, "", Temporal::AudioTime)
, _state (state)
, have_ioconfig (false)
, saved_input (0)
, saved_output (0)
{
set_owner (o);
XMLProperty const* pname = state.property (X_("name"));
if (pname) {
XMLProperty const* ptype = state.property (X_("type"));
if (ptype) {
set_name (string_compose ("%1 (%2)", pname->value (), proc_type_map (ptype->value ())));
} else {
set_name (pname->value ());
}
_display_to_user = true;
}
int have_io = 0;
XMLNodeList kids = state.children ();
for (XMLNodeIterator i = kids.begin(); i != kids.end(); ++i) {
if ((*i)->name() == X_("ConfiguredInput")) {
have_io |= 1;
saved_input = new ChanCount(**i);
}
if ((*i)->name() == X_("ConfiguredOutput")) {
have_io |= 2;
saved_output = new ChanCount(**i);
}
/* sidechain is a Processor (IO)
* add a SC port to retain connections
*/
if ((*i)->name () == Processor::state_node_name) {
add_sidechain_from_xml (**i, Stateful::loading_state_version);
}
}
have_ioconfig = (have_io == 3);
}
UnknownProcessor::~UnknownProcessor () {
delete saved_input;;
delete saved_output;
}
XMLNode &
UnknownProcessor::state () const
{
return *(new XMLNode (_state));
}
bool
UnknownProcessor::can_support_io_configuration (const ChanCount &in, ChanCount & out) {
if (have_ioconfig && in == *saved_input) {
out = *saved_output;
return true;
} else if (!have_ioconfig) {
/* pass for old sessions.
*
* session load assumes processor config succeeds.
* if initial configuration fails, processors downstream
* remain unconfigured and at least the panner will assert/segfault.
*
* This may still result in impossible setup, however
* Route::configure_processors_unlocked() ignores configure_io() return value
* in the inner loop and configures all available processors.
*
* It can still lead to segfaults IFF the track has no inputs and this is a
* generator (processor_max_streams will be zero).
*/
PBD::warning << _("Using plugin-stub with unknown i/o configuration for: ") << name() << endmsg;
#if 0
/* No output channels are fine (or should be, there may be edge-cases with e.g sends).
*
* Discussion needed.
*
* This is the safer option (no audio output, no possible damage)
* and the way to go in the long run.
* An even better solution is to disable the route if there are missing plugins
* and/or impossible configurations.
*
* Currently no output channels results in awkward GUI route display and also
* breaks semantics in mixbus (which assumes that the route has channels required
* for the always present mixer-strip plugin).
*/
out = ChanCount ();
#else
out = in;
#endif
return true;
} else {
PBD::error << _("Using plugin-stub with mismatching i/o configuration for: ") << name() << endmsg;
out = in;
}
return true;
}
void
UnknownProcessor::run (BufferSet& bufs, samplepos_t /*start_sample*/, samplepos_t /*end_sample*/, double /*speed*/, pframes_t nframes, bool)
{
if (!have_ioconfig) {
return;
}
// silence excess output buffers
for (uint32_t i = saved_input->n_audio(); i < saved_output->n_audio(); ++i) {
bufs.get_audio (i).silence (nframes);
}
}
void
UnknownProcessor::add_sidechain_from_xml (const XMLNode& node, int version)
{
if (version < 3000) {
return;
}
XMLNodeList nlist = node.children();
if (nlist.size() == 0) {
return;
}
uint32_t n_audio = 0;
uint32_t n_midi = 0;
XMLNodeConstIterator it = nlist.front()->children().begin();
for ( ; it != nlist.front()->children().end(); ++ it) {
if ((*it)->name() == "Port") {
DataType type (DataType::NIL);
(*it)->get_property ("type", type);
if (type == DataType::AUDIO) {
++n_audio;
} else if (type == DataType::MIDI) {
++n_midi;
}
}
}
_sidechain.reset (new SideChain (_session, "toBeRenamed"));
for (uint32_t n = 0; n < n_audio; ++n) {
_sidechain->input()->add_port ("", owner(), DataType::AUDIO); // add a port, don't connect.
}
for (uint32_t n = 0; n < n_midi; ++n) {
_sidechain->input()->add_port ("", owner(), DataType::MIDI); // add a port, don't connect.
}
_sidechain->set_state (node, version);
}