From 3164c9a07b3646a60cb9433faf7ee90fdd57985e Mon Sep 17 00:00:00 2001 From: Robin Gareus Date: Sat, 2 Apr 2016 23:34:05 +0200 Subject: prepare sidechain i/o processor --- libs/ardour/ardour/sidechain.h | 52 +++++++++++++++++++ libs/ardour/sidechain.cc | 112 +++++++++++++++++++++++++++++++++++++++++ libs/ardour/wscript | 1 + 3 files changed, 165 insertions(+) create mode 100644 libs/ardour/ardour/sidechain.h create mode 100644 libs/ardour/sidechain.cc (limited to 'libs/ardour') diff --git a/libs/ardour/ardour/sidechain.h b/libs/ardour/ardour/sidechain.h new file mode 100644 index 0000000000..ad92137cea --- /dev/null +++ b/libs/ardour/ardour/sidechain.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2016 Robin Gareus + * Copyright (C) 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __ardour_sidechain_h__ +#define __ardour_sidechain_h__ + +#include + +#include "pbd/stateful.h" +#include "ardour/ardour.h" +#include "ardour/io_processor.h" + +namespace ARDOUR { + +class LIBARDOUR_API SideChain : public IOProcessor +{ +public: + SideChain (Session&, const std::string&); + virtual ~SideChain (); + + void run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool); + + bool can_support_io_configuration (const ChanCount& in, ChanCount& out); + bool configure_io (ChanCount in, ChanCount out); + + XMLNode& state(bool full); + int set_state(const XMLNode&, int version); + +private: + /* disallow copy construction */ + SideChain (const SideChain&); +}; + +} // namespace ARDOUR + +#endif // __ardour_sidechain_h__ diff --git a/libs/ardour/sidechain.cc b/libs/ardour/sidechain.cc new file mode 100644 index 0000000000..dec5e1dc1f --- /dev/null +++ b/libs/ardour/sidechain.cc @@ -0,0 +1,112 @@ +/* + * Copyright (C) 2016 Robin Gareus + * Copyright (C) 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include + +#include "pbd/xml++.h" + +#include "ardour/audioengine.h" +#include "ardour/buffer.h" +#include "ardour/buffer_set.h" +#include "ardour/io.h" +#include "ardour/session.h" +#include "ardour/sidechain.h" + +#include "i18n.h" + +using namespace ARDOUR; +using namespace PBD; + + +SideChain::SideChain (Session& s, const std::string& name) + : IOProcessor (s, true, false, name) +{ + +} + +SideChain::~SideChain () +{ +} + +XMLNode& +SideChain::state(bool full) +{ + XMLNode& node = IOProcessor::state(full); + node.add_property ("type", "sidechain"); + return node; +} + + +int +SideChain::set_state (const XMLNode& node, int version) +{ + XMLNodeList nlist = node.children(); + const XMLNode* insert_node = &node; + + for (XMLNodeIterator niter = nlist.begin(); niter != nlist.end(); ++niter) { + if ((*niter)->name() == "IOProcessor") { + insert_node = *niter; + } + } + + IOProcessor::set_state (*insert_node, version); + + return 0; +} + +void +SideChain::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes, bool) +{ + if (_input->n_ports() == ChanCount::ZERO) { + // inplace pass-through + return; + } + + if ((!_active && !_pending_active)) { + // zero buffers + for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) { + for (uint32_t out = _configured_input.get (*t); out < bufs.count().get (*t); ++out) { + bufs.get (*t, out).silence (nframes); + } + } + return; + } + + _input->collect_input (bufs, nframes, _configured_input); + bufs.set_count(_configured_output); + + _active = _pending_active; +} + +bool +SideChain::can_support_io_configuration (const ChanCount& in, ChanCount& out) +{ + out = in + _input->n_ports(); + return true; +} + +bool +SideChain::configure_io (ChanCount in, ChanCount out) +{ + if (out != in + _input->n_ports()) { + return false; + } + Processor::configure_io(in, out); + return true; +} diff --git a/libs/ardour/wscript b/libs/ardour/wscript index 070f24ef46..f38e62d3cc 100644 --- a/libs/ardour/wscript +++ b/libs/ardour/wscript @@ -203,6 +203,7 @@ libardour_sources = [ 'session_state_utils.cc', 'session_time.cc', 'session_transport.cc', + 'sidechain.cc', 'slave.cc', 'smf_source.cc', 'sndfile_helpers.cc', -- cgit v1.2.3