std::shared_ptr

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

diff --git a/src/lib/audio_mapping.cc b/src/lib/audio_mapping.cc
index bf454b5e5e43cddbdfa48695e5e9fc01eacc863d..37a3d5fa22b8d8dc03b684e08a4f7842b747391f 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.
 
@@ -19,11 +19,16 @@
 */
 
 #include "audio_mapping.h"
-#include "util.h"
+#include "audio_processor.h"
 #include "digester.h"
+#include "util.h"
+#include "warnings.h"
 #include <dcp/raw_convert.h>
 #include <libcxml/cxml.h>
+DCPOMATIC_DISABLE_WARNINGS
 #include <libxml++/libxml++.h>
+DCPOMATIC_ENABLE_WARNINGS
+#include <boost/regex.hpp>
 #include <iostream>
 
 using std::list;
@@ -34,8 +39,9 @@ using std::string;
 using std::min;
 using std::vector;
 using std::abs;
-using boost::shared_ptr;
-using boost::dynamic_pointer_cast;
+using std::shared_ptr;
+using std::dynamic_pointer_cast;
+using boost::optional;
 using dcp::raw_convert;
 
 AudioMapping::AudioMapping ()
@@ -78,6 +84,67 @@ AudioMapping::make_zero ()
        }
 }
 
+struct ChannelRegex
+{
+       ChannelRegex (string regex_, int channel_)
+               : regex (regex_)
+               , channel (channel_)
+       {}
+
+       string regex;
+       int channel;
+};
+
+void
+AudioMapping::make_default (AudioProcessor const * processor, optional<boost::filesystem::path> filename)
+{
+       static ChannelRegex const regex[] = {
+               ChannelRegex(".*[\\._-]L[\\._-].*", 0),
+               ChannelRegex(".*[\\._-]R[\\._-].*", 1),
+               ChannelRegex(".*[\\._-]C[\\._-].*", 2),
+               ChannelRegex(".*[\\._-]Lfe[\\._-].*", 3),
+               ChannelRegex(".*[\\._-]LFE[\\._-].*", 3),
+               ChannelRegex(".*[\\._-]Lss[\\._-].*", 4),
+               ChannelRegex(".*[\\._-]Lsr[\\._-].*", 6),
+               ChannelRegex(".*[\\._-]Ls[\\._-].*", 4),
+               ChannelRegex(".*[\\._-]Rss[\\._-].*", 5),
+               ChannelRegex(".*[\\._-]Rsr[\\._-].*", 7),
+               ChannelRegex(".*[\\._-]Rs[\\._-].*", 5),
+       };
+
+       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].regex, boost::regex::icase);
+                                       if (boost::regex_match(filename->string(), e) && regex[i].channel < output_channels()) {
+                                               set (0, regex[i].channel, 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) {
@@ -115,6 +182,8 @@ 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;
 }
 
@@ -168,7 +237,7 @@ AudioMapping::mapped_output_channels () const
        list<int> mapped;
 
        for (vector<vector<float> >::const_iterator i = _gain.begin(); i != _gain.end(); ++i) {
-               for (size_t j = 0; j < i->size(); ++j) {
+               BOOST_FOREACH (dcp::Channel j, dcp::used_audio_channels()) {
                        if (abs ((*i)[j]) > minus_96_db) {
                                mapped.push_back (j);
                        }