Get the name of a color from the internal table of hard-coded named
colors.
This function is meant to enumerate the color names recognized by
av_parse_color().
@param color_idx index of the requested color, starting from 0
@param rgbp if not NULL, will point to a 3-elements array with the color value in RGB
@return the color name string or NULL if color_idx is not in the array
Get the name of a color from the internal table of hard-coded named colors.
This function is meant to enumerate the color names recognized by av_parse_color().
@param color_idx index of the requested color, starting from 0 @param rgbp if not NULL, will point to a 3-elements array with the color value in RGB @return the color name string or NULL if color_idx is not in the array