Add default audio language configuration (#2375).

3 files changed, 24 insertions, 0 deletions

diff --git a/src/lib/config.cc b/src/lib/config.cc
index 235bace7b..d44abdfbf 100644
--- a/src/lib/config.cc
+++ b/src/lib/config.cc
@@ -357,6 +357,12 @@ try
 	_default_j2k_bandwidth = f.optional_number_child<int>("DefaultJ2KBandwidth").get_value_or (200000000);
 	_default_audio_delay = f.optional_number_child<int>("DefaultAudioDelay").get_value_or (0);
 	_default_interop = f.optional_bool_child("DefaultInterop").get_value_or (false);
+	try {
+		auto al = f.optional_string_child("DefaultAudioLanguage");
+		if (al) {
+			_default_audio_language = dcp::LanguageTag(*al);
+		}
+	} catch (std::runtime_error&) {}
 
 	for (auto const& i: f.node_children("DefaultMetadata")) {
 		_default_metadata[i->string_attribute("key")] = i->content();
@@ -755,6 +761,10 @@ Config::write_config () const
 	root->add_child("DefaultAudioDelay")->add_child_text (raw_convert<string> (_default_audio_delay));
 	/* [XML] DefaultInterop 1 to default new films to Interop, 0 for SMPTE. */
 	root->add_child("DefaultInterop")->add_child_text (_default_interop ? "1" : "0");
+	if (_default_audio_language) {
+		/* [XML] DefaultAudioLanguage Default audio language to use for new films */
+		root->add_child("DefaultAudioLanguage")->add_child_text(_default_audio_language->to_string());
+	}
 	for (auto const& i: _default_metadata) {
 		auto c = root->add_child("DefaultMetadata");
 		c->set_attribute("key", i.first);
diff --git a/src/lib/config.h b/src/lib/config.h
index c86622427..c6bf5986b 100644
--- a/src/lib/config.h
+++ b/src/lib/config.h
@@ -238,6 +238,10 @@ public:
 		return _default_interop;
 	}
 
+	boost::optional<dcp::LanguageTag> default_audio_language() const {
+		return _default_audio_language;
+	}
+
 	std::map<std::string, std::string> default_metadata () const {
 		return _default_metadata;
 	}
@@ -762,6 +766,14 @@ public:
 		maybe_set (_default_interop, i);
 	}
 
+	void set_default_audio_language(dcp::LanguageTag tag) {
+		maybe_set(_default_audio_language, tag);
+	}
+
+	void unset_default_audio_language() {
+		maybe_set(_default_audio_language, boost::optional<dcp::LanguageTag>());
+	}
+
 	void set_default_metadata (std::map<std::string, std::string> const& metadata) {
 		maybe_set (_default_metadata, metadata);
 	}
@@ -1292,6 +1304,7 @@ private:
 	int _default_j2k_bandwidth;
 	int _default_audio_delay;
 	bool _default_interop;
+	boost::optional<dcp::LanguageTag> _default_audio_language;
 	std::map<std::string, std::string> _default_metadata;
 	/** Default directory to offer to write KDMs to; if it's not set,
 	    the home directory will be offered.
diff --git a/src/lib/film.cc b/src/lib/film.cc
index 7d713c041..e021c0aa9 100644
--- a/src/lib/film.cc
+++ b/src/lib/film.cc
@@ -176,6 +176,7 @@ Film::Film (optional<boost::filesystem::path> dir)
 	, _name_language (dcp::LanguageTag("en-US"))
 	, _version_number (1)
 	, _status (dcp::Status::FINAL)
+	, _audio_language(Config::instance()->default_audio_language())
 	, _state_version (current_state_version)
 	, _dirty (false)
 	, _tolerant (false)