Add polarity-invert processor

diff --git a/libs/ardour/ardour/polarity_processor.h b/libs/ardour/ardour/polarity_processor.h
new file mode 100644 (file)
index 0000000..d059b37
--- /dev/null
+++ b/libs/ardour/ardour/polarity_processor.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef _ardour_polarity_processor_h__
+#define _ardour_polarity_processor_h__
+
+#include "ardour/processor.h"
+#include "ardour/types.h"
+
+namespace ARDOUR {
+
+class LIBARDOUR_API PolarityProcessor : public Processor
+{
+public:
+       PolarityProcessor (Session&, boost::shared_ptr<PhaseControl>);
+
+       bool display_to_user() const { return false; }
+       void run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sample, double speed, pframes_t nframes, bool result_required);
+       bool configure_io (ChanCount in, ChanCount out);
+       bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
+
+       boost::shared_ptr<PhaseControl> phase_control() {
+               return _control;
+       }
+
+protected:
+       XMLNode& state ();
+
+private:
+       boost::shared_ptr<PhaseControl> _control;
+};
+
+}
+
+#endif

diff --git a/libs/ardour/luabindings.cc b/libs/ardour/luabindings.cc
index d15b8fec93fcc13d9e6d5511b5f3412dbcad4e72..15122e96b802a4906ee4eb368f1687f8dda45692 100644 (file)
--- a/libs/ardour/luabindings.cc
+++ b/libs/ardour/luabindings.cc
@@ -61,6 +61,7 @@
 #include "ardour/playlist.h"
 #include "ardour/plugin.h"
 #include "ardour/plugin_insert.h"
+#include "ardour/polarity_processor.h"
 #include "ardour/port_manager.h"
 #include "ardour/progress.h"
 #include "ardour/runtime_functions.h"
@@ -1335,6 +1336,7 @@ LuaBindings::common (lua_State* L)
                .addCast<PeakMeter> ("to_peakmeter")
                .addCast<MonitorProcessor> ("to_monitorprocessor")
                .addCast<Send> ("to_send")
+               .addCast<PolarityProcessor> ("to_polarityprocessor")
 #if 0 // those objects are not yet bound
                .addCast<CapturingProcessor> ("to_capturingprocessor")
                .addCast<DelayLine> ("to_delayline")
@@ -1542,6 +1544,9 @@ LuaBindings::common (lua_State* L)
                .deriveWSPtrClass <UnknownProcessor, Processor> ("UnknownProcessor")
                .endClass ()
 
+               .deriveWSPtrClass <PolarityProcessor, Processor> ("PolarityProcessor")
+               .endClass ()
+
                .deriveWSPtrClass <PluginInsert::PluginControl, AutomationControl> ("PluginControl")
                .endClass ()
 

diff --git a/libs/ardour/polarity_processor.cc b/libs/ardour/polarity_processor.cc
new file mode 100644 (file)
index 0000000..5604cd4
--- /dev/null
+++ b/libs/ardour/polarity_processor.cc
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2017 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 "ardour/audio_buffer.h"
+#include "ardour/phase_control.h"
+#include "ardour/polarity_processor.h"
+
+#include "pbd/i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+
+PolarityProcessor::PolarityProcessor (Session& s, boost::shared_ptr<PhaseControl> control)
+       : Processor(s, "Polarity")
+       , _control (control)
+{
+}
+
+bool
+PolarityProcessor::can_support_io_configuration (const ChanCount& in, ChanCount& out)
+{
+       out = in;
+       return true;
+}
+
+bool
+PolarityProcessor::configure_io (ChanCount in, ChanCount out)
+{
+       if (out != in) { // always 1:1
+               return false;
+       }
+
+       return Processor::configure_io (in, out);
+}
+
+void
+PolarityProcessor::run (BufferSet& bufs, samplepos_t /*start_sample*/, samplepos_t /*end_sample*/, double /*speed*/, pframes_t nframes, bool)
+{
+       if (!_active && !_pending_active) {
+               return;
+       }
+       _active = _pending_active;
+
+       if (_control->none()) {
+               return;
+       }
+       int chn = 0;
+
+       for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i, ++chn) {
+               Sample* const sp = i->data();
+               if (_control->inverted (chn)) {
+                       for (pframes_t nx = 0; nx < nframes; ++nx) {
+                               sp[nx] = -sp[nx];
+                       }
+               }
+       }
+}
+
+XMLNode&
+PolarityProcessor::state ()
+{
+       XMLNode& node (Processor::state ());
+       node.set_property("type", "polarity");
+       return node;
+}

diff --git a/libs/ardour/wscript b/libs/ardour/wscript
index f5d30f147bdaa04287b7c7adc4d759cc68b7d15d..7a4a26c15169be8cd7bb8b5c22402a6ab334f90e 100644 (file)
--- a/libs/ardour/wscript
+++ b/libs/ardour/wscript
@@ -168,6 +168,7 @@ libardour_sources = [
         'plugin.cc',
         'plugin_insert.cc',
         'plugin_manager.cc',
+        'polarity_processor.cc',
         'port.cc',
         'port_insert.cc',
         'port_manager.cc',