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backend-vnc: use output power_state to disable repainting while disconnected

Browse source 
With weston_output_power_on/off() we can use power_state to disable
repainting completely while no VNC client is connected. This allows
to remove the initial repaint and per-output damage tracking.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2023-02-28 12:56:17 +01:00 committed by Marius Vlad
parent 1446d9cb3c
commit 40f5eaf401
1 changed files with 11 additions and 43 deletions
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54
libweston/backend-vnc/vnc.c
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@ -85,13 +85,8 @@ struct vnc_output {
struct nvnc_display *display;
struct nvnc_fb_pool *fb_pool;
/* damage accumulated while not repainting */
pixman_region32_t damage;
struct wl_list peers;
/* used to trigger initial repaint */
bool fb_pool_empty;
};
struct vnc_peer {
@ -436,6 +431,7 @@ static void
vnc_client_cleanup(struct nvnc_client *client)
{
struct vnc_peer *peer = nvnc_get_userdata(client);
struct vnc_output *output = peer->backend->output;
wl_list_remove(&peer->link);
weston_seat_release_keyboard(peer->seat);
@ -443,6 +439,9 @@ vnc_client_cleanup(struct nvnc_client *client)
weston_seat_release(peer->seat);
free(peer);
weston_log("VNC Client disconnected\n");
if (wl_list_empty(&output->peers))
weston_output_power_off(&output->base);
}
static struct weston_pointer *
@ -668,6 +667,9 @@ vnc_new_client(struct nvnc_client *client)
weston_seat_init_pointer(peer->seat);
weston_seat_init_keyboard(peer->seat, backend->xkb_keymap);
if (wl_list_empty(&output->peers))
weston_output_power_on(&output->base);
wl_list_insert(&output->peers, &peer->link);
nvnc_set_userdata(client, peer, NULL);
@ -743,16 +745,8 @@ vnc_output_enable(struct weston_output *base)
output->display = nvnc_display_new(0, 0);
pixman_region32_init(&output->damage);
nvnc_add_display(backend->server, output->display);
/*
* Neat VNC warns when a client connects before a display buffer has
* been set. Repaint once to create an initial buffer.
*/
output->fb_pool_empty = true;
return 0;
}
@ -770,8 +764,6 @@ vnc_output_disable(struct weston_output *base)
if (!output->base.enabled)
return 0;
pixman_region32_fini(&output->damage);
nvnc_display_unref(output->display);
nvnc_fb_pool_unref(output->fb_pool);
@ -905,18 +897,11 @@ vnc_output_repaint(struct weston_output *base, pixman_region32_t *damage)
assert(output);
if (wl_list_empty(&output->peers))
weston_output_power_off(base);
if (pixman_region32_not_empty(damage)) {
/* Accumulate damage for the next repaint */
pixman_region32_union(&output->damage,
&output->damage, damage);
/* Only repaint when a client is connected */
if (!wl_list_empty(&output->peers) || output->fb_pool_empty) {
vnc_update_buffer(output->display, &output->damage);
pixman_region32_clear(&output->damage);
output->fb_pool_empty = false;
}
vnc_update_buffer(output->display, damage);
pixman_region32_subtract(&ec->primary_plane.damage,
&ec->primary_plane.damage, damage);
}
@ -1071,19 +1056,6 @@ static const struct weston_vnc_output_api api = {
vnc_output_set_size,
};
static void
vnc_handle_output_move(struct wl_listener *listener, void *data)
{
struct weston_output *base = data;
struct vnc_output *output = to_vnc_output(base);
if (!output)
return;
/* Move accumulated damage with output */
pixman_region32_translate(&output->damage, base->move_x, base->move_y);
}
static int
vnc_aml_dispatch(int fd, uint32_t mask, void *data)
{
@ -1202,10 +1174,6 @@ vnc_backend_create(struct weston_compositor *compositor,
weston_log("TLS support activated\n");
backend->output_move_listener.notify = vnc_handle_output_move;
wl_signal_add(&compositor->output_moved_signal,
&backend->output_move_listener);
ret = weston_plugin_api_register(compositor, WESTON_VNC_OUTPUT_API_NAME,
&api, sizeof(api));
if (ret < 0) {