+extern std::string careful_string_filter (std::string);
+extern std::pair<int, int> audio_channel_types (std::list<int> mapped, int channels);
+extern boost::shared_ptr<AudioBuffers> remap (boost::shared_ptr<const AudioBuffers> input, int output_channels, AudioMapping map);
+extern Eyes increment_eyes (Eyes e);
+extern void checked_fread (void* ptr, size_t size, FILE* stream, boost::filesystem::path path);
+extern void checked_fwrite (void const * ptr, size_t size, FILE* stream, boost::filesystem::path path);
+extern size_t utf8_strlen (std::string s);
+extern std::string day_of_week_to_string (boost::gregorian::greg_weekday d);
+extern void emit_subtitle_image (dcpomatic::ContentTimePeriod period, dcp::SubtitleImage sub, dcp::Size size, boost::shared_ptr<TextDecoder> decoder);
+extern bool show_jobs_on_console (bool progress);
+extern void copy_in_bits (boost::filesystem::path from, boost::filesystem::path to, boost::function<void (float)>);
+#ifdef DCPOMATIC_VARIANT_SWAROOP
+extern boost::shared_ptr<dcp::CertificateChain> read_swaroop_chain (boost::filesystem::path path);
+extern void write_swaroop_chain (boost::shared_ptr<const dcp::CertificateChain> chain, boost::filesystem::path output);
+#endif
+
+template <class T>
+std::list<T>
+vector_to_list (std::vector<T> v)
+{
+ std::list<T> l;
+ BOOST_FOREACH (T& i, v) {
+ l.push_back (i);
+ }
+ return l;
+}