Use plain git hash for VERSION when there is no exact tag.

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

diff --git a/src/lib/cinema_sound_processor.cc b/src/lib/cinema_sound_processor.cc
index 6a79051145e81e33ff998cacf1f4f7e21cb6c7d7..434fdd1cf6628ae92d79c95cb663c63c5a5390a0 100644 (file)
--- a/src/lib/cinema_sound_processor.cc
+++ b/src/lib/cinema_sound_processor.cc
@@ -1,96 +1,100 @@
 /*
-    Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2021 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/>.
 
 */
 
+
 /** @file src/sound_processor.cc
  *  @brief CinemaSoundProcessor class.
  */
 
-#include <iostream>
-#include <cassert>
+
 #include "cinema_sound_processor.h"
 #include "dolby_cp750.h"
+#include "usl.h"
+#include "datasat_ap2x.h"
+#include "dcpomatic_assert.h"
+#include <iostream>
+#include <cassert>
+
 
 using namespace std;
 
-vector<CinemaSoundProcessor const *> CinemaSoundProcessor::_cinema_sound_processors;
+
+vector<unique_ptr<const CinemaSoundProcessor>> CinemaSoundProcessor::_cinema_sound_processors;
+
 
 /** @param i Our id.
  *  @param n User-visible name.
  */
-CinemaSoundProcessor::CinemaSoundProcessor (string i, string n)
+CinemaSoundProcessor::CinemaSoundProcessor (string i, string n, float knee, float below, float above)
        : _id (i)
        , _name (n)
+       , _knee (knee)
+       , _below (below)
+       , _above (above)
 {
 
 }
 
+
 /** @return All available sound processors */
 vector<CinemaSoundProcessor const *>
 CinemaSoundProcessor::all ()
 {
-       return _cinema_sound_processors;
+       vector<CinemaSoundProcessor const *> raw;
+       for (auto& processor: _cinema_sound_processors) {
+               raw.push_back (processor.get());
+       }
+       return raw;
 }
 
+
 /** Set up the static _sound_processors vector; must be called before from_*
  *  methods are used.
  */
 void
 CinemaSoundProcessor::setup_cinema_sound_processors ()
 {
-       _cinema_sound_processors.push_back (new DolbyCP750);
+       _cinema_sound_processors.push_back (unique_ptr<CinemaSoundProcessor>(new DolbyCP750));
+       _cinema_sound_processors.push_back (unique_ptr<CinemaSoundProcessor>(new USL));
+       _cinema_sound_processors.push_back (unique_ptr<CinemaSoundProcessor>(new DatasatAP2x));
 }
 
+
 /** @param id One of our ids.
  *  @return Corresponding sound processor, or 0.
  */
 CinemaSoundProcessor const *
 CinemaSoundProcessor::from_id (string id)
 {
-       vector<CinemaSoundProcessor const *>::iterator i = _cinema_sound_processors.begin ();
+       auto i = _cinema_sound_processors.begin ();
        while (i != _cinema_sound_processors.end() && (*i)->id() != id) {
                ++i;
        }
 
        if (i == _cinema_sound_processors.end ()) {
-               return 0;
+               return nullptr;
        }
 
-       return *i;
+       return i->get();
 }
 
-/** @param s A sound processor from our static list.
- *  @return Index of the sound processor with the list, or -1.
- */
-int
-CinemaSoundProcessor::as_index (CinemaSoundProcessor const * s)
-{
-       vector<CinemaSoundProcessor*>::size_type i = 0;
-       while (i < _cinema_sound_processors.size() && _cinema_sound_processors[i] != s) {
-               ++i;
-       }
-
-       if (i == _cinema_sound_processors.size ()) {
-               return -1;
-       }
-
-       return i;
-}
 
 /** @param i An index returned from as_index().
  *  @return Corresponding sound processor.
@@ -98,6 +102,37 @@ CinemaSoundProcessor::as_index (CinemaSoundProcessor const * s)
 CinemaSoundProcessor const *
 CinemaSoundProcessor::from_index (int i)
 {
-       assert (i <= int(_cinema_sound_processors.size ()));
-       return _cinema_sound_processors[i];
+       DCPOMATIC_ASSERT (i >= 0 && i < int(_cinema_sound_processors.size()));
+       return _cinema_sound_processors[i].get();
+}
+
+
+float
+CinemaSoundProcessor::db_for_fader_change (float from, float to) const
+{
+       float db = 0;
+
+       if (from < to) {
+               if (from <= _knee) {
+                       float const t = min (to, _knee);
+                       db += (t - from) * _below;
+               }
+
+               if (to > 4) {
+                       float const t = max (from, _knee);
+                       db += (to - t) * _above;
+               }
+       } else {
+               if (from >= _knee) {
+                       float const t = max (to, _knee);
+                       db -= (from - t) * _above;
+               }
+
+               if (to < _knee) {
+                       float const t = min (from, _knee);
+                       db -= (t - to) * _below;
+               }
+       }
+
+       return db;
 }