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-rw-r--r--src/gamma-randr.c109
1 files changed, 57 insertions, 52 deletions
diff --git a/src/gamma-randr.c b/src/gamma-randr.c
index 713139a..9bbb807 100644
--- a/src/gamma-randr.c
+++ b/src/gamma-randr.c
@@ -48,11 +48,16 @@ struct gamma_state {
static int
randr_init(struct gamma_state **state)
{
+ xcb_randr_query_version_cookie_t ver_cookie;
+ xcb_randr_query_version_reply_t *ver_reply;
+ xcb_generic_error_t *error;
+ struct gamma_state *s;
+
/* Initialize state. */
- *state = malloc(sizeof(struct gamma_state));
+ *state = malloc(sizeof(**state));
if (*state == NULL) return -1;
- struct gamma_state *s = *state;
+ s = *state;
s->screen_num = -1;
s->crtc_num = NULL;
@@ -60,17 +65,12 @@ randr_init(struct gamma_state **state)
s->crtc_count = 0;
s->crtcs = NULL;
- xcb_generic_error_t *error;
-
/* Open X server connection */
s->conn = xcb_connect(NULL, &s->preferred_screen);
/* Query RandR version */
- xcb_randr_query_version_cookie_t ver_cookie =
- xcb_randr_query_version(s->conn, RANDR_VERSION_MAJOR,
- RANDR_VERSION_MINOR);
- xcb_randr_query_version_reply_t *ver_reply =
- xcb_randr_query_version_reply(s->conn, ver_cookie, &error);
+ ver_cookie = xcb_randr_query_version(s->conn, RANDR_VERSION_MAJOR, RANDR_VERSION_MINOR);
+ ver_reply = xcb_randr_query_version_reply(s->conn, ver_cookie, &error);
/* TODO What does it mean when both error and ver_reply is NULL?
Apparently, we have to check both to avoid seg faults. */
@@ -102,16 +102,22 @@ static int
randr_start(struct gamma_state *state, enum program_mode mode)
{
xcb_generic_error_t *error;
-
- int screen_num = state->screen_num;
+ const xcb_setup_t *setup;
+ xcb_screen_iterator_t iter;
+ int i, screen_num;
+ xcb_randr_get_screen_resources_current_cookie_t res_cookie;
+ xcb_randr_get_screen_resources_current_reply_t *res_reply;
+ xcb_randr_crtc_t *crtcs;
+
+ screen_num = state->screen_num;
if (screen_num < 0) screen_num = state->preferred_screen;
/* Get screen */
- const xcb_setup_t *setup = xcb_get_setup(state->conn);
- xcb_screen_iterator_t iter = xcb_setup_roots_iterator(setup);
+ setup = xcb_get_setup(state->conn);
+ iter = xcb_setup_roots_iterator(setup);
state->screen = NULL;
- for (int i = 0; iter.rem > 0; i++) {
+ for (i = 0; iter.rem > 0; i++) {
if (i == screen_num) {
state->screen = iter.data;
break;
@@ -126,10 +132,10 @@ randr_start(struct gamma_state *state, enum program_mode mode)
}
/* Get list of CRTCs for the screen */
- xcb_randr_get_screen_resources_current_cookie_t res_cookie =
+ res_cookie =
xcb_randr_get_screen_resources_current(state->conn,
state->screen->root);
- xcb_randr_get_screen_resources_current_reply_t *res_reply =
+ res_reply =
xcb_randr_get_screen_resources_current_reply(state->conn,
res_cookie,
&error);
@@ -149,11 +155,10 @@ randr_start(struct gamma_state *state, enum program_mode mode)
return -1;
}
- xcb_randr_crtc_t *crtcs =
- xcb_randr_get_screen_resources_current_crtcs(res_reply);
+ crtcs = xcb_randr_get_screen_resources_current_crtcs(res_reply);
/* Save CRTC identifier in state */
- for (int i = 0; i < state->crtc_count; i++) {
+ for (i = 0; i < state->crtc_count; i++) {
state->crtcs[i].crtc = crtcs[i];
}
@@ -162,16 +167,18 @@ randr_start(struct gamma_state *state, enum program_mode mode)
/* Save size and gamma ramps of all CRTCs.
Current gamma ramps are saved so we can restore them
at program exit. */
- for (int i = 0; i < state->crtc_count; i++) {
+ for (i = 0; i < state->crtc_count; i++) {
xcb_randr_crtc_t crtc = state->crtcs[i].crtc;
+ xcb_randr_get_crtc_gamma_size_cookie_t gamma_size_cookie;
+ xcb_randr_get_crtc_gamma_size_reply_t *gamma_size_reply;
+ xcb_randr_get_crtc_gamma_cookie_t gamma_get_cookie;
+ xcb_randr_get_crtc_gamma_reply_t *gamma_get_reply;
+ uint16_t *gamma_r, *gamma_g, *gamma_b;
+ unsigned int ramp_size;
/* Request size of gamma ramps */
- xcb_randr_get_crtc_gamma_size_cookie_t gamma_size_cookie =
- xcb_randr_get_crtc_gamma_size(state->conn, crtc);
- xcb_randr_get_crtc_gamma_size_reply_t *gamma_size_reply =
- xcb_randr_get_crtc_gamma_size_reply(state->conn,
- gamma_size_cookie,
- &error);
+ gamma_size_cookie = xcb_randr_get_crtc_gamma_size(state->conn, crtc);
+ gamma_size_reply = xcb_randr_get_crtc_gamma_size_reply(state->conn, gamma_size_cookie, &error);
if (error) {
fprintf(stderr, _("`%s' returned error %d\n"),
@@ -180,7 +187,7 @@ randr_start(struct gamma_state *state, enum program_mode mode)
return -1;
}
- unsigned int ramp_size = gamma_size_reply->size;
+ ramp_size = gamma_size_reply->size;
state->crtcs[i].ramp_size = ramp_size;
free(gamma_size_reply);
@@ -192,12 +199,8 @@ randr_start(struct gamma_state *state, enum program_mode mode)
}
/* Request current gamma ramps */
- xcb_randr_get_crtc_gamma_cookie_t gamma_get_cookie =
- xcb_randr_get_crtc_gamma(state->conn, crtc);
- xcb_randr_get_crtc_gamma_reply_t *gamma_get_reply =
- xcb_randr_get_crtc_gamma_reply(state->conn,
- gamma_get_cookie,
- &error);
+ gamma_get_cookie = xcb_randr_get_crtc_gamma(state->conn, crtc);
+ gamma_get_reply = xcb_randr_get_crtc_gamma_reply(state->conn, gamma_get_cookie, &error);
if (error) {
fprintf(stderr, _("`%s' returned error %d\n"),
@@ -205,12 +208,9 @@ randr_start(struct gamma_state *state, enum program_mode mode)
return -1;
}
- uint16_t *gamma_r =
- xcb_randr_get_crtc_gamma_red(gamma_get_reply);
- uint16_t *gamma_g =
- xcb_randr_get_crtc_gamma_green(gamma_get_reply);
- uint16_t *gamma_b =
- xcb_randr_get_crtc_gamma_blue(gamma_get_reply);
+ gamma_r = xcb_randr_get_crtc_gamma_red(gamma_get_reply);
+ gamma_g = xcb_randr_get_crtc_gamma_green(gamma_get_reply);
+ gamma_b = xcb_randr_get_crtc_gamma_blue(gamma_get_reply);
/* Allocate space for saved gamma ramps */
state->crtcs[i].saved_ramps =
@@ -302,12 +302,13 @@ randr_set_option(struct gamma_state *state, const char *key, const char *value)
state->screen_num = atoi(value);
} else if (strcasecmp(key, "crtc") == 0) {
char *tail;
+ int i, parsed;
/* Check how many crtcs are configured */
const char *local_value = value;
- while (1) {
+ for (;;) {
errno = 0;
- int parsed = strtol(local_value, &tail, 0);
+ parsed = strtol(local_value, &tail, 0);
if (parsed == 0 && (errno != 0 ||
tail == local_value)) {
fprintf(stderr, _("Unable to read screen"
@@ -328,9 +329,9 @@ randr_set_option(struct gamma_state *state, const char *key, const char *value)
/* Configure all given crtcs */
state->crtc_num = calloc(state->crtc_num_count, sizeof(int));
local_value = value;
- for (int i = 0; i < state->crtc_num_count; i++) {
+ for (i = 0; i < state->crtc_num_count; i++) {
errno = 0;
- int parsed = strtol(local_value, &tail, 0);
+ parsed = strtol(local_value, &tail, 0);
if (parsed == 0 && (errno != 0 ||
tail == local_value)) {
return -1;
@@ -363,7 +364,11 @@ randr_set_temperature_for_crtc(
struct gamma_state *state, int crtc_num, const struct color_setting *setting,
int preserve)
{
+ xcb_randr_crtc_t crtc;
+ xcb_void_cookie_t gamma_set_cookie;
xcb_generic_error_t *error;
+ unsigned int i, ramp_size;
+ uint16_t *gamma_ramps, *gamma_r, *gamma_g, *gamma_b, value;
if (crtc_num >= state->crtc_count || crtc_num < 0) {
fprintf(stderr, _("CRTC %d does not exist. "),
@@ -378,19 +383,19 @@ randr_set_temperature_for_crtc(
return -1;
}
- xcb_randr_crtc_t crtc = state->crtcs[crtc_num].crtc;
- unsigned int ramp_size = state->crtcs[crtc_num].ramp_size;
+ crtc = state->crtcs[crtc_num].crtc;
+ ramp_size = state->crtcs[crtc_num].ramp_size;
/* Create new gamma ramps */
- uint16_t *gamma_ramps = malloc(3*ramp_size*sizeof(uint16_t));
+ gamma_ramps = malloc(3*ramp_size*sizeof(uint16_t));
if (gamma_ramps == NULL) {
perror("malloc");
return -1;
}
- uint16_t *gamma_r = &gamma_ramps[0*ramp_size];
- uint16_t *gamma_g = &gamma_ramps[1*ramp_size];
- uint16_t *gamma_b = &gamma_ramps[2*ramp_size];
+ gamma_r = &gamma_ramps[0*ramp_size];
+ gamma_g = &gamma_ramps[1*ramp_size];
+ gamma_b = &gamma_ramps[2*ramp_size];
if (preserve) {
/* Initialize gamma ramps from saved state */
@@ -398,8 +403,8 @@ randr_set_temperature_for_crtc(
3*ramp_size*sizeof(uint16_t));
} else {
/* Initialize gamma ramps to pure state */
- for (int i = 0; i < ramp_size; i++) {
- uint16_t value = (double)i/ramp_size * (UINT16_MAX+1);
+ for (i = 0; i < ramp_size; i++) {
+ value = (double)i/ramp_size * (UINT16_MAX+1);
gamma_r[i] = value;
gamma_g[i] = value;
gamma_b[i] = value;
@@ -410,7 +415,7 @@ randr_set_temperature_for_crtc(
ramp_size, ramp_size, setting);
/* Set new gamma ramps */
- xcb_void_cookie_t gamma_set_cookie =
+ gamma_set_cookie =
xcb_randr_set_crtc_gamma_checked(state->conn, crtc,
ramp_size, gamma_r,
gamma_g, gamma_b);
generated by cgit v1.2.3-70-g09d2 (git 2.48.0) at 2025-04-05 18:53:34 +0000