Add preference for the default number of DCP channels (#897).

3 files changed, 14 insertions, 1 deletions

diff --git a/src/lib/config.cc b/src/lib/config.cc
index f8debbb4e..891d832a2 100644
--- a/src/lib/config.cc
+++ b/src/lib/config.cc
@@ -85,6 +85,7 @@ Config::set_defaults ()
 	_default_still_length = 10;
 	_default_container = Ratio::from_id ("185");
 	_default_dcp_content_type = DCPContentType::from_isdcf_name ("FTR");
+	_default_dcp_audio_channels = 6;
 	_default_j2k_bandwidth = 100000000;
 	_default_audio_delay = 0;
 	_default_interop = false;
@@ -208,6 +209,8 @@ Config::read ()
 		_default_dcp_content_type = DCPContentType::from_isdcf_name (c.get ());
 	}
 
+	_default_dcp_audio_channels = f.optional_number_child<int>("DefaultDCPAudioChannels").get_value_or (6);
+
 	if (f.optional_string_child ("DCPMetadataIssuer")) {
 		_dcp_issuer = f.string_child ("DCPMetadataIssuer");
 	} else if (f.optional_string_child ("DCPIssuer")) {
@@ -389,6 +392,7 @@ Config::write_config_xml () const
 	if (_default_dcp_content_type) {
 		root->add_child("DefaultDCPContentType")->add_child_text (_default_dcp_content_type->isdcf_name ());
 	}
+	root->add_child("DefaultDCPAudioChannels")->add_child_text (raw_convert<string> (_default_dcp_audio_channels));
 	root->add_child("DCPIssuer")->add_child_text (_dcp_issuer);
 	root->add_child("DCPCreator")->add_child_text (_dcp_creator);
 
diff --git a/src/lib/config.h b/src/lib/config.h
index 6baa434a3..1ffcfdb98 100644
--- a/src/lib/config.h
+++ b/src/lib/config.h
@@ -152,6 +152,10 @@ public:
 		return _default_dcp_content_type;
 	}
 
+	int default_dcp_audio_channels () const {
+		return _default_dcp_audio_channels;
+	}
+
 	std::string dcp_issuer () const {
 		return _dcp_issuer;
 	}
@@ -351,6 +355,10 @@ public:
 		maybe_set (_default_dcp_content_type, t);
 	}
 
+	void set_default_dcp_audio_channels (int c) {
+		maybe_set (_default_dcp_audio_channels, c);
+	}
+
 	void set_dcp_issuer (std::string i) {
 		maybe_set (_dcp_issuer, i);
 	}
@@ -529,6 +537,7 @@ private:
 	int _default_still_length;
 	Ratio const * _default_container;
 	DCPContentType const * _default_dcp_content_type;
+	int _default_dcp_audio_channels;
 	std::string _dcp_issuer;
 	std::string _dcp_creator;
 	int _default_j2k_bandwidth;
diff --git a/src/lib/film.cc b/src/lib/film.cc
index 64550556b..3cd3f0f21 100644
--- a/src/lib/film.cc
+++ b/src/lib/film.cc
@@ -133,7 +133,7 @@ Film::Film (boost::filesystem::path dir, bool log)
 	, _j2k_bandwidth (Config::instance()->default_j2k_bandwidth ())
 	, _isdcf_metadata (Config::instance()->default_isdcf_metadata ())
 	, _video_frame_rate (24)
-	, _audio_channels (6)
+	, _audio_channels (Config::instance()->default_dcp_audio_channels ())
 	, _three_d (false)
 	, _sequence (true)
 	, _interop (Config::instance()->default_interop ())