static bool
map_to_device (ply_renderer_backend_t *backend)
{
ply_list_node_t *node;
bool head_mapped;
head_mapped = false;
node = ply_list_get_first_node (backend->heads);
while (node != NULL)
{
ply_list_node_t *next_node;
ply_renderer_head_t *head;
head = (ply_renderer_head_t *) ply_list_node_get_data (node);
next_node = ply_list_get_next_node (backend->heads, node);
if (ply_renderer_head_map (backend, head))
head_mapped = true;
node = next_node;
}
if (ply_terminal_is_active (backend->terminal))
activate (backend);
else
ply_terminal_activate_vt (backend->terminal);
return head_mapped;
}
static bool
reset_scan_out_buffer_if_needed (ply_renderer_backend_t *backend,
ply_renderer_head_t *head)
{
drmModeCrtc *controller;
bool did_reset = false;
if (!ply_terminal_is_active (backend->terminal))
return false;
controller = drmModeGetCrtc (backend->device_fd, head->controller_id);
if (controller == NULL)
return false;
if (controller->buffer_id != head->scan_out_buffer_id)
{
ply_renderer_head_set_scan_out_buffer (backend, head,
head->scan_out_buffer_id);
did_reset = true;
}
drmModeFreeCrtc (controller);
return did_reset;
}
bool
ply_terminal_deactivate_vt (ply_terminal_t *terminal)
{
int old_vt_number;
assert (terminal != NULL);
if (!ply_terminal_is_vt (terminal)) {
ply_trace ("terminal is not for a VT");
return false;
}
if (terminal->initial_vt_number < 0) {
ply_trace ("Don't know where to jump to");
return false;
}
if (terminal->initial_vt_number == terminal->vt_number) {
ply_trace ("can't deactivate initial VT");
return false;
}
/* Otherwise we'd close and free the terminal before handling the
* "leaving the VT" signal.
*/
ply_terminal_stop_watching_for_vt_changes (terminal);
old_vt_number = terminal->vt_number;
if (ply_terminal_is_active (terminal)) {
ply_trace ("Attempting to set active vt back to %d from %d",
terminal->initial_vt_number, old_vt_number);
if (!set_active_vt (terminal, terminal->initial_vt_number)) {
ply_trace ("Couldn't move console to initial vt: %m");
return false;
}
if (!wait_for_vt_to_become_active (terminal, terminal->initial_vt_number)) {
ply_trace ("Error while waiting for vt %d to become active: %m",
terminal->initial_vt_number);
return false;
}
} else {
ply_trace ("terminal for vt %d is inactive", terminal->vt_number);
}
if (!deallocate_vt (terminal, old_vt_number)) {
ply_trace ("couldn't deallocate vt %d: %m", old_vt_number);
return false;
}
return true;
}
static void
on_active_vt_changed (ply_renderer_backend_t *backend)
{
if (ply_terminal_is_active (backend->terminal))
{
ply_trace ("activating on vt change");
activate (backend);
}
else
{
ply_trace ("deactivating on vt change");
deactivate (backend);
}
}
static void
reset_scan_out_buffer_if_needed (ply_renderer_backend_t *backend,
ply_renderer_head_t *head)
{
drmModeCrtc *controller;
if (!ply_terminal_is_active (backend->terminal))
return;
controller = drmModeGetCrtc (backend->device_fd, head->controller_id);
if (controller == NULL)
return;
if (controller->buffer_id != head->scan_out_buffer_id)
{
ply_trace ("Something stole the monitor");
ply_renderer_head_set_scan_out_buffer (backend, head,
head->scan_out_buffer_id);
}
drmModeFreeCrtc (controller);
}
