Remove in-place translations support.

[dcpomatic.git] / src / lib / mid_side_decoder.cc

diff --git a/src/lib/mid_side_decoder.cc b/src/lib/mid_side_decoder.cc
index 842d5c8ee56d066b49a2e631cfa73cabd7eb5d88..d3d85622c22f30b6cba0d17e372329ce0c563c85 100644 (file)
--- a/src/lib/mid_side_decoder.cc
+++ b/src/lib/mid_side_decoder.cc
@@ -1,32 +1,37 @@
 /*
-    Copyright (C) 2014-2015 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic 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,
+    DCP-o-matic 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.
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 
-#include "mid_side_decoder.h"
+
 #include "audio_buffers.h"
 #include "audio_mapping.h"
+#include "mid_side_decoder.h"
 
 #include "i18n.h"
 
-using std::string;
+
+using std::make_shared;
 using std::min;
+using std::shared_ptr;
+using std::string;
 using std::vector;
-using boost::shared_ptr;
+
 
 string
 MidSideDecoder::name () const
@@ -34,17 +39,13 @@ MidSideDecoder::name () const
        return _("Mid-side decoder");
 }
 
+
 string
 MidSideDecoder::id () const
 {
        return N_("mid-side-decoder");
 }
 
-ChannelCount
-MidSideDecoder::in_channels () const
-{
-       return ChannelCount (2);
-}
 
 int
 MidSideDecoder::out_channels () const
@@ -52,45 +53,58 @@ MidSideDecoder::out_channels () const
        return 3;
 }
 
+
 shared_ptr<AudioProcessor>
 MidSideDecoder::clone (int) const
 {
-       return shared_ptr<AudioProcessor> (new MidSideDecoder ());
+       return make_shared<MidSideDecoder>();
 }
 
+
 shared_ptr<AudioBuffers>
-MidSideDecoder::run (shared_ptr<const AudioBuffers> in)
+MidSideDecoder::run (shared_ptr<const AudioBuffers> in, int channels)
 {
-       shared_ptr<AudioBuffers> out (new AudioBuffers (3, in->frames ()));
+       int const N = min (channels, 3);
+       auto out = make_shared<AudioBuffers>(channels, in->frames ());
        for (int i = 0; i < in->frames(); ++i) {
-               float const left = in->data()[0][i];
-               float const right = in->data()[1][i];
-               float const mid = (left + right) / 2;
-               out->data()[0][i] = left - mid;
-               out->data()[1][i] = right - mid;
-               out->data()[2][i] = mid;
+               auto const left = in->data()[0][i];
+               auto const right = in->data()[1][i];
+               auto const mid = (left + right) / 2;
+               if (N > 0) {
+                       out->data()[0][i] = left - mid;
+               }
+               if (N > 1) {
+                       out->data()[1][i] = right - mid;
+               }
+               if (N > 2) {
+                       out->data()[2][i] = mid;
+               }
+       }
+
+       for (int i = N; i < channels; ++i) {
+               out->make_silent (i);
        }
 
        return out;
 }
 
+
 void
 MidSideDecoder::make_audio_mapping_default (AudioMapping& mapping) const
 {
        /* Just map the first two input channels to our M/S */
        mapping.make_zero ();
-       for (int i = 0; i < min (2, mapping.input_channels()); ++i) {
+       for (int i = 0; i < min(2, mapping.input_channels()); ++i) {
                mapping.set (i, i, 1);
        }
 }
 
-vector<string>
+
+vector<NamedChannel>
 MidSideDecoder::input_names () const
 {
-       vector<string> n;
-
-       n.push_back (_("Left"));
-       n.push_back (_("Right"));
-
-       return n;
+       return {
+               NamedChannel(_("Left"), 0),
+               NamedChannel(_("Right"), 1)
+       };
 }