static uint16_t _find_selected_button_id(GRAPHICS_CONTROLLER *gc)
{
/* executed when playback condition changes (ex. new page, popup-on, ...) */
PG_DISPLAY_SET *s = gc->igs;
BD_IG_PAGE *page = NULL;
unsigned page_id = bd_psr_read(gc->regs, PSR_MENU_PAGE_ID);
unsigned button_id = bd_psr_read(gc->regs, PSR_SELECTED_BUTTON_ID);
unsigned ii;
page = _find_page(&s->ics->interactive_composition, page_id);
if (!page) {
GC_TRACE("_find_selected_button_id(): unknown page #%d (have %d pages)\n",
page_id, s->ics->interactive_composition.num_pages);
return 0xffff;
}
/* run 5.9.8.3 */
/* 1) always use page->default_selected_button_id_ref if it is valid */
if (_find_button_page(page, page->default_selected_button_id_ref, NULL) &&
_is_button_enabled(gc, page, page->default_selected_button_id_ref)) {
GC_TRACE("_find_selected_button_id() -> default #%d\n", page->default_selected_button_id_ref);
return page->default_selected_button_id_ref;
}
/* 2) fallback to current PSR10 value if it is valid */
for (ii = 0; ii < page->num_bogs; ii++) {
BD_IG_BOG *bog = &page->bog[ii];
uint16_t enabled_button = gc->bog_data[ii].enabled_button;
if (button_id == enabled_button) {
if (_find_button_bog(bog, enabled_button)) {
GC_TRACE("_find_selected_button_id() -> PSR10 #%d\n", enabled_button);
return enabled_button;
}
}
}
/* 3) fallback to find first valid_button_id_ref from page */
for (ii = 0; ii < page->num_bogs; ii++) {
BD_IG_BOG *bog = &page->bog[ii];
uint16_t enabled_button = gc->bog_data[ii].enabled_button;
if (_find_button_bog(bog, enabled_button)) {
GC_TRACE("_find_selected_button_id() -> first valid #%d\n", enabled_button);
return enabled_button;
}
}
GC_TRACE("_find_selected_button_id(): not found -> 0xffff\n");
return 0xffff;
}
static void _update_selected_button(GRAPHICS_CONTROLLER *gc)
{
unsigned button_id = bd_psr_read(gc->regs, PSR_SELECTED_BUTTON_ID);
TRACE("_update_enabled_button(): currently enabled button is #%d\n", button_id);
// special case: triggered only after enable button disables selected button
if (button_id & 0x10000) {
button_id &= 0xffff;
bd_psr_write(gc->regs, PSR_SELECTED_BUTTON_ID, button_id);
TRACE("_update_enabled_button() -> #%d [last enabled]\n", button_id);
return;
}
if (button_id == 0xffff) {
PG_DISPLAY_SET *s = gc->igs;
BD_IG_PAGE *page = NULL;
unsigned page_id = bd_psr_read(gc->regs, PSR_MENU_PAGE_ID);
page = _find_page(&s->ics->interactive_composition, page_id);
if (!page) {
TRACE("_update_enabled_button(): unknown page #%d (have %d pages)\n",
page_id, s->ics->interactive_composition.num_pages);
return;
}
// run 5.9.8.3
if (_find_button_page(page, page->default_selected_button_id_ref, NULL) &&
_is_button_enabled(gc, page, page->default_selected_button_id_ref)) {
button_id = page->default_selected_button_id_ref;
} else {
unsigned ii;
for (ii = 0; ii < page->num_bogs; ii++) {
BD_IG_BOG *bog = &page->bog[ii];
if (_find_button_bog(bog, gc->enabled_button[ii])) {
button_id = gc->enabled_button[ii];
break;
}
}
}
bd_psr_write(gc->regs, PSR_SELECTED_BUTTON_ID, button_id);
TRACE("_update_enabled_button() -> #%d\n", button_id);
}
}
