X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Faudio_mapping.cc;h=da9f9822ec6644f8a9ae8b034cd6653d90701dee;hb=a5d004b0773f633401528392fc28e66d70e13ac8;hp=ca175912b31c0b7969933622d2b49751b0b2bece;hpb=615762376308039521e8030797d496ad8d09206e;p=dcpomatic.git

diff --git a/src/lib/audio_mapping.cc b/src/lib/audio_mapping.cc
index ca175912b..da9f9822e 100644
--- a/src/lib/audio_mapping.cc
+++ b/src/lib/audio_mapping.cc
@@ -1,28 +1,35 @@
 /*
-    Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2018 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 "audio_mapping.h"
+#include "audio_processor.h"
+#include "digester.h"
 #include "util.h"
-#include "md5_digester.h"
-#include "raw_convert.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;
 using std::cout;
@@ -32,8 +39,10 @@ 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 ()
 	: _input_channels (0)
@@ -56,7 +65,7 @@ AudioMapping::setup (int input_channels, int output_channels)
 {
 	_input_channels = input_channels;
 	_output_channels = output_channels;
-	
+
 	_gain.resize (_input_channels);
 	for (int i = 0; i < _input_channels; ++i) {
 		_gain[i].resize (_output_channels);
@@ -75,6 +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) {
@@ -112,12 +182,16 @@ 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;
 }
 
 float
 AudioMapping::get (int input_channel, int output_channel) const
 {
+	DCPOMATIC_ASSERT (input_channel < int (_gain.size()));
+	DCPOMATIC_ASSERT (output_channel < int (_gain[0].size()));
 	return _gain[input_channel][output_channel];
 }
 
@@ -143,7 +217,7 @@ AudioMapping::as_xml (xmlpp::Node* node) const
 string
 AudioMapping::digest () const
 {
-	MD5Digester digester;
+	Digester digester;
 	digester.add (_input_channels);
 	digester.add (_output_channels);
 	for (int i = 0; i < _input_channels; ++i) {
@@ -161,9 +235,9 @@ AudioMapping::mapped_output_channels () const
 	static float const minus_96_db = 0.000015849;
 
 	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) {
+		for (auto j: dcp::used_audio_channels()) {
 			if (abs ((*i)[j]) > minus_96_db) {
 				mapped.push_back (j);
 			}
@@ -172,7 +246,7 @@ AudioMapping::mapped_output_channels () const
 
 	mapped.sort ();
 	mapped.unique ();
-	
+
 	return mapped;
 }