summaryrefslogtreecommitdiff
path: root/libs/ardour/sidechain.cc
diff options
context:
space:
mode:
authorRobin Gareus <robin@gareus.org>2016-04-02 23:34:05 +0200
committerRobin Gareus <robin@gareus.org>2016-04-02 23:34:05 +0200
commit3164c9a07b3646a60cb9433faf7ee90fdd57985e (patch)
treeed58d30e6dd8999b5ea6b5e89bc9094a721b55a9 /libs/ardour/sidechain.cc
parent408f9d8a780d9bac67d1d10361a909d5f34d588e (diff)
prepare sidechain i/o processor
Diffstat (limited to 'libs/ardour/sidechain.cc')
-rw-r--r--libs/ardour/sidechain.cc112
1 files changed, 112 insertions, 0 deletions
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 <robin@gareus.org>
+ * 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 <algorithm>
+
+#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;
+}