+void
+checked_fread (void* ptr, size_t size, FILE* stream, boost::filesystem::path path)
+{
+ size_t N = fread (ptr, 1, size, stream);
+ if (N != size) {
+ if (ferror(stream)) {
+ fclose (stream);
+ throw FileError (String::compose("fread error %1", errno), path);
+ } else {
+ fclose (stream);
+ throw FileError ("Unexpected short read", path);
+ }
+ }
+}
+
+size_t
+utf8_strlen (string s)
+{
+ size_t const len = s.length ();
+ int N = 0;
+ for (size_t i = 0; i < len; ++i) {
+ unsigned char c = s[i];
+ if ((c & 0xe0) == 0xc0) {
+ ++i;
+ } else if ((c & 0xf0) == 0xe0) {
+ i += 2;
+ } else if ((c & 0xf8) == 0xf0) {
+ i += 3;
+ }
+ ++N;
+ }
+ return N;
+}
+
+string
+day_of_week_to_string (boost::gregorian::greg_weekday d)
+{
+ switch (d.as_enum()) {
+ case boost::date_time::Sunday:
+ return _("Sunday");
+ case boost::date_time::Monday:
+ return _("Monday");
+ case boost::date_time::Tuesday:
+ return _("Tuesday");
+ case boost::date_time::Wednesday:
+ return _("Wednesday");
+ case boost::date_time::Thursday:
+ return _("Thursday");
+ case boost::date_time::Friday:
+ return _("Friday");
+ case boost::date_time::Saturday:
+ return _("Saturday");
+ }
+
+ return d.as_long_string ();
+}
+
+/** @param size Size of picture that the subtitle will be overlaid onto */
+void
+emit_subtitle_image (ContentTimePeriod period, dcp::SubtitleImage sub, dcp::Size size, shared_ptr<TextDecoder> decoder)
+{
+ /* XXX: this is rather inefficient; decoding the image just to get its size */
+ FFmpegImageProxy proxy (sub.png_image());
+ shared_ptr<Image> image = proxy.image().first;
+ /* set up rect with height and width */
+ dcpomatic::Rect<double> rect(0, 0, image->size().width / double(size.width), image->size().height / double(size.height));
+
+ /* add in position */
+
+ switch (sub.h_align()) {
+ case dcp::HALIGN_LEFT:
+ rect.x += sub.h_position();
+ break;
+ case dcp::HALIGN_CENTER:
+ rect.x += 0.5 + sub.h_position() - rect.width / 2;
+ break;
+ case dcp::HALIGN_RIGHT:
+ rect.x += 1 - sub.h_position() - rect.width;
+ break;
+ }
+
+ switch (sub.v_align()) {
+ case dcp::VALIGN_TOP:
+ rect.y += sub.v_position();
+ break;
+ case dcp::VALIGN_CENTER:
+ rect.y += 0.5 + sub.v_position() - rect.height / 2;
+ break;
+ case dcp::VALIGN_BOTTOM:
+ rect.y += 1 - sub.v_position() - rect.height;
+ break;
+ }
+
+ decoder->emit_bitmap (period, image, rect);
+}
+
+bool
+show_jobs_on_console (bool progress)