ZVBI Library
0.2.33
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Data Fields | |
unsigned int | designations |
vbi_ttx_charset_code | charset_code [2] |
unsigned int | def_screen_color |
unsigned int | def_row_color |
unsigned int | foreground_clut |
unsigned int | background_clut |
struct ttx_ext_fallback | fallback |
uint8_t | drcs_clut [2+2 *4+2 *16] |
vbi_rgba | color_map [40] |
unsigned int ttx_extension::designations |
We have data from packets X/28 (in LOP) or M/29 (in magazine) with this set of designations. LOP pages without X/28 packets should fall back to the magazine defaults unless these bits are set. The extension data in struct ttx_magazine is always valid, contains global defaults as specified in EN 300 706 (see _vbi_teletext_decoder_default_magazine()) unless M/29 packets have been received.
color_map[32 .. 39] is always valid.
vbi_ttx_charset_code ttx_extension::charset_code[2] |
Primary and secondary character set.
unsigned int ttx_extension::def_screen_color |
Default colors.
unsigned int ttx_extension::foreground_clut |
Adding these values (0, 8, 16, 24) to character color 0 ... 7 gives an index into color_map[] below.
uint8_t ttx_extension::drcs_clut[2+2 *4+2 *16] |
DRCS color lookup table. Translates (G)DRCS pixel values to indices into the color_map[].
vbi_rgba ttx_extension::color_map[40] |
Five palettes of 8 each colors each.
Level 1.0 and 1.5 pages use only palette #0, Level 2.5 and 3.5 pages use palette #0 ... #3.
At Level 2.5 palette #2 and #3 are redefinable, except color_map[8] which is "transparent" color (VBI_TRANSPARENT_BLACK). At Level 3.5 palette #0 and #1 are also redefinable.
Palette #4 never changes and contains libzvbi internal colors for navigation bars, search text highlighting etc. These colors are roughly the same as the default palette #0, see vbi_color.