- /* I tried av_*_name for these but they are not the most
- nicely formatted.
- */
-
- char const * ranges[] = {
- _("Unspecified"),
- _("MPEG (0-219 or equivalent)"),
- _("JPEG (0-255 or equivalent)")
- };
-
- DCPOMATIC_ASSERT (AVCOL_RANGE_NB == 3);
- p.push_back (make_pair (_("Colour range"), ranges[_color_range]));
+ if (_bits_per_pixel) {
+ int const sub = 219 * pow (2, _bits_per_pixel.get() - 8);
+ int const total = pow (2, _bits_per_pixel.get());
+
+ switch (_color_range) {
+ case AVCOL_RANGE_UNSPECIFIED:
+ /// TRANSLATORS: this means that the range of pixel values used in this
+ /// file is unknown (not specified in the file).
+ p.push_back (make_pair (_("Colour range"), _("Unspecified")));
+ break;
+ case AVCOL_RANGE_MPEG:
+ /// TRANSLATORS: this means that the range of pixel values used in this
+ /// file is limited, so that not all possible values are valid.
+ p.push_back (make_pair (_("Colour range"), String::compose (_("Limited (%1-%2)"), (total - sub) / 2, (total + sub) / 2)));
+ break;
+ case AVCOL_RANGE_JPEG:
+ /// TRANSLATORS: this means that the range of pixel values used in this
+ /// file is full, so that all possible pixel values are valid.
+ p.push_back (make_pair (_("Colour range"), String::compose (_("Full (0-%1)"), total)));
+ break;
+ default:
+ DCPOMATIC_ASSERT (false);
+ }
+ } else {
+ switch (_color_range) {
+ case AVCOL_RANGE_UNSPECIFIED:
+ /// TRANSLATORS: this means that the range of pixel values used in this
+ /// file is unknown (not specified in the file).
+ p.push_back (make_pair (_("Colour range"), _("Unspecified")));
+ break;
+ case AVCOL_RANGE_MPEG:
+ /// TRANSLATORS: this means that the range of pixel values used in this
+ /// file is limited, so that not all possible values are valid.
+ p.push_back (make_pair (_("Colour range"), _("Limited")));
+ break;
+ case AVCOL_RANGE_JPEG:
+ /// TRANSLATORS: this means that the range of pixel values used in this
+ /// file is full, so that all possible pixel values are valid.
+ p.push_back (make_pair (_("Colour range"), _("Full")));
+ break;
+ default:
+ DCPOMATIC_ASSERT (false);
+ }
+ }