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gamma-control-v1: apply gamma LUT when output gets enabled 

Closes: https://github.com/swaywm/wlroots/issues/2372
This commit is contained in:
Simon Ser 2020-08-27 11:42:58 +02:00
parent be1e7647c3
commit c2db691cad
2 changed files with 43 additions and 12 deletions
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4
include/wlr/types/wlr_gamma_control_v1.h
View File

@ -21,6 +21,10 @@ struct wlr_gamma_control_v1 {
struct wlr_output *output;
struct wl_list link;
uint16_t *table;
size_t ramp_size;
struct wl_listener output_commit_listener;
struct wl_listener output_destroy_listener;
void *data;

51
types/wlr_gamma_control_v1.c
View File

@ -24,7 +24,9 @@ static void gamma_control_destroy(struct wlr_gamma_control_v1 *gamma_control) {
wlr_output_set_gamma(gamma_control->output, 0, NULL, NULL, NULL);
wl_resource_set_user_data(gamma_control->resource, NULL);
wl_list_remove(&gamma_control->output_destroy_listener.link);
wl_list_remove(&gamma_control->output_commit_listener.link);
wl_list_remove(&gamma_control->link);
free(gamma_control->table);
free(gamma_control);
}
@ -34,6 +36,22 @@ static void gamma_control_send_failed(
gamma_control_destroy(gamma_control);
}
static void gamma_control_apply(struct wlr_gamma_control_v1 *gamma_control) {
uint16_t *r = gamma_control->table;
uint16_t *g = gamma_control->table + gamma_control->ramp_size;
uint16_t *b = gamma_control->table + 2 * gamma_control->ramp_size;
wlr_output_set_gamma(gamma_control->output, gamma_control->ramp_size, r, g, b);
if (!wlr_output_test(gamma_control->output)) {
wlr_output_rollback(gamma_control->output);
gamma_control_send_failed(gamma_control);
return;
}
// Gamma LUT will be applied on next output commit
wlr_output_schedule_frame(gamma_control->output);
}
static const struct zwlr_gamma_control_v1_interface gamma_control_impl;
static struct wlr_gamma_control_v1 *gamma_control_from_resource(
@ -56,6 +74,17 @@ static void gamma_control_handle_output_destroy(struct wl_listener *listener,
gamma_control_destroy(gamma_control);
}
static void gamma_control_handle_output_commit(struct wl_listener *listener,
void *data) {
struct wlr_gamma_control_v1 *gamma_control =
wl_container_of(listener, gamma_control, output_commit_listener);
struct wlr_output_event_commit *event = data;
if ((event->committed & WLR_OUTPUT_STATE_ENABLED) &&
gamma_control->output->enabled) {
gamma_control_apply(gamma_control);
}
}
static void gamma_control_handle_set_gamma(struct wl_client *client,
struct wl_resource *gamma_control_resource, int fd) {
struct wlr_gamma_control_v1 *gamma_control =
@ -101,20 +130,13 @@ static void gamma_control_handle_set_gamma(struct wl_client *client,
close(fd);
fd = -1;
uint16_t *r = table;
uint16_t *g = table + ramp_size;
uint16_t *b = table + 2 * ramp_size;
free(gamma_control->table);
gamma_control->table = table;
gamma_control->ramp_size = ramp_size;
wlr_output_set_gamma(gamma_control->output, ramp_size, r, g, b);
if (!wlr_output_test(gamma_control->output)) {
wlr_output_rollback(gamma_control->output);
gamma_control_send_failed(gamma_control);
goto error_table;
if (gamma_control->output->enabled) {
gamma_control_apply(gamma_control);
}
free(table);
// Gamma LUT will be applied on next output commit
wlr_output_schedule_frame(gamma_control->output);
return;
@ -177,6 +199,11 @@ static void gamma_control_manager_get_gamma_control(struct wl_client *client,
gamma_control->output_destroy_listener.notify =
gamma_control_handle_output_destroy;
wl_signal_add(&output->events.commit,
&gamma_control->output_commit_listener);
gamma_control->output_commit_listener.notify =
gamma_control_handle_output_commit;
wl_list_init(&gamma_control->link);
size_t gamma_size = wlr_output_get_gamma_size(output);