Accessor for ClosedCaptionsDialog.

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

diff --git a/src/lib/audio_mapping.cc b/src/lib/audio_mapping.cc
index b436d757988a3e054657d627b6d9258fde308380..f07d5deced4a9f4e0f5c0a0115f0ecf4c5bfb3e5 100644 (file)
--- a/src/lib/audio_mapping.cc
+++ b/src/lib/audio_mapping.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2018 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -21,9 +21,11 @@
 #include "audio_mapping.h"
 #include "util.h"
 #include "digester.h"
-#include "raw_convert.h"
+#include "audio_processor.h"
+#include <dcp/raw_convert.h>
 #include <libcxml/cxml.h>
 #include <libxml++/libxml++.h>
+#include <boost/regex.hpp>
 #include <iostream>
 
 using std::list;
@@ -36,6 +38,8 @@ using std::vector;
 using std::abs;
 using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
+using boost::optional;
+using dcp::raw_convert;
 
 AudioMapping::AudioMapping ()
        : _input_channels (0)
@@ -77,6 +81,51 @@ AudioMapping::make_zero ()
        }
 }
 
+void
+AudioMapping::make_default (AudioProcessor const * processor, optional<boost::filesystem::path> filename)
+{
+       static string const regex[] = {
+               ".*[\\._-]L[\\._-].*",
+               ".*[\\._-]R[\\._-].*",
+               ".*[\\._-]C[\\._-].*",
+               ".*[\\._-]Lfe[\\._-].*",
+               ".*[\\._-]Ls[\\._-].*",
+               ".*[\\._-]Rs[\\._-].*"
+       };
+
+       static int const regexes = sizeof(regex) / sizeof(*regex);
+
+       if (processor) {
+               processor->make_audio_mapping_default (*this);
+       } else {
+               make_zero ();
+               if (input_channels() == 1) {
+                       bool guessed = false;
+
+                       /* See if we can guess where this stream should go */
+                       if (filename) {
+                               for (int i = 0; i < regexes; ++i) {
+                                       boost::regex e (regex[i], boost::regex::icase);
+                                       if (boost::regex_match(filename->string(), e) && i < output_channels()) {
+                                               set (0, i, 1);
+                                               guessed = true;
+                                       }
+                               }
+                       }
+
+                       if (!guessed) {
+                               /* If we have no idea, just put it on centre */
+                               set (0, static_cast<int>(dcp::CENTRE), 1);
+                       }
+               } else {
+                       /* 1:1 mapping */
+                       for (int i = 0; i < min (input_channels(), output_channels()); ++i) {
+                               set (i, i, 1);
+                       }
+               }
+       }
+}
+
 AudioMapping::AudioMapping (cxml::ConstNodePtr node, int state_version)
 {
        if (state_version < 32) {
@@ -114,6 +163,8 @@ AudioMapping::AudioMapping (cxml::ConstNodePtr node, int state_version)
 void
 AudioMapping::set (int input_channel, int output_channel, float g)
 {
+       DCPOMATIC_ASSERT (input_channel < int(_gain.size()));
+       DCPOMATIC_ASSERT (output_channel < int(_gain[0].size()));
        _gain[input_channel][output_channel] = g;
 }