You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
411 lines
9.0 KiB
411 lines
9.0 KiB
/* -- xinerama.c -- */
|
|
|
|
#include "x11vnc.h"
|
|
#include "xwrappers.h"
|
|
#include "blackout_t.h"
|
|
#include "scan.h"
|
|
|
|
/*
|
|
* routines related to xinerama and blacking out rectangles
|
|
*/
|
|
|
|
/* blacked-out region (-blackout, -xinerama) */
|
|
|
|
#define BLACKR_MAX 100
|
|
blackout_t blackr[BLACKR_MAX]; /* hardwired max blackouts */
|
|
tile_blackout_t *tile_blackout;
|
|
int blackouts = 0;
|
|
|
|
void initialize_blackouts_and_xinerama(void);
|
|
void push_sleep(int n);
|
|
void push_black_screen(int n);
|
|
void refresh_screen(int push);
|
|
void zero_fb(int x1, int y1, int x2, int y2);
|
|
|
|
|
|
static void initialize_blackouts(char *list);
|
|
static void blackout_tiles(void);
|
|
static void initialize_xinerama (void);
|
|
|
|
|
|
/*
|
|
* Take a comma separated list of geometries: WxH+X+Y and register them as
|
|
* rectangles to black out from the screen.
|
|
*/
|
|
static void initialize_blackouts(char *list) {
|
|
char *p, *blist = strdup(list);
|
|
int x, y, X, Y, h, w, t;
|
|
|
|
p = strtok(blist, ", \t");
|
|
while (p) {
|
|
if (!strcmp("noptr", p)) {
|
|
blackout_ptr = 1;
|
|
rfbLog("pointer will be blocked from blackout "
|
|
"regions\n");
|
|
p = strtok(NULL, ", \t");
|
|
continue;
|
|
}
|
|
if (! parse_geom(p, &w, &h, &x, &y, dpy_x, dpy_y)) {
|
|
if (*p != '\0') {
|
|
rfbLog("skipping invalid geometry: %s\n", p);
|
|
}
|
|
p = strtok(NULL, ", \t");
|
|
continue;
|
|
}
|
|
w = nabs(w);
|
|
h = nabs(h);
|
|
x = nfix(x, dpy_x);
|
|
y = nfix(y, dpy_y);
|
|
X = x + w;
|
|
Y = y + h;
|
|
X = nfix(X, dpy_x+1);
|
|
Y = nfix(Y, dpy_y+1);
|
|
if (x > X) {
|
|
t = X; X = x; x = t;
|
|
}
|
|
if (y > Y) {
|
|
t = Y; Y = y; y = t;
|
|
}
|
|
if (x < 0 || x > dpy_x || y < 0 || y > dpy_y ||
|
|
X < 0 || X > dpy_x || Y < 0 || Y > dpy_y ||
|
|
x == X || y == Y) {
|
|
rfbLog("skipping invalid blackout geometry: %s x="
|
|
"%d-%d,y=%d-%d,w=%d,h=%d\n", p, x, X, y, Y, w, h);
|
|
} else {
|
|
rfbLog("blackout rect: %s: x=%d-%d y=%d-%d\n", p,
|
|
x, X, y, Y);
|
|
|
|
/*
|
|
* note that the black out is x1 <= x but x < x2
|
|
* for the region. i.e. the x2, y2 are outside
|
|
* by 1 pixel.
|
|
*/
|
|
blackr[blackouts].x1 = x;
|
|
blackr[blackouts].y1 = y;
|
|
blackr[blackouts].x2 = X;
|
|
blackr[blackouts].y2 = Y;
|
|
blackouts++;
|
|
if (blackouts >= BLACKR_MAX) {
|
|
rfbLog("too many blackouts: %d\n", blackouts);
|
|
break;
|
|
}
|
|
}
|
|
p = strtok(NULL, ", \t");
|
|
}
|
|
free(blist);
|
|
}
|
|
|
|
/*
|
|
* Now that all blackout rectangles have been constructed, see what overlap
|
|
* they have with the tiles in the system. If a tile is touched by a
|
|
* blackout, record information.
|
|
*/
|
|
static void blackout_tiles(void) {
|
|
int tx, ty;
|
|
int debug_bo = 0;
|
|
if (! blackouts) {
|
|
return;
|
|
}
|
|
if (getenv("DEBUG_BLACKOUT") != NULL) {
|
|
debug_bo = 1;
|
|
}
|
|
|
|
/*
|
|
* to simplify things drop down to single copy mode, etc...
|
|
*/
|
|
single_copytile = 1;
|
|
/* loop over all tiles. */
|
|
for (ty=0; ty < ntiles_y; ty++) {
|
|
for (tx=0; tx < ntiles_x; tx++) {
|
|
sraRegionPtr tile_reg, black_reg;
|
|
sraRect rect;
|
|
sraRectangleIterator *iter;
|
|
int n, b, x1, y1, x2, y2, cnt;
|
|
|
|
/* tile number and coordinates: */
|
|
n = tx + ty * ntiles_x;
|
|
x1 = tx * tile_x;
|
|
y1 = ty * tile_y;
|
|
x2 = x1 + tile_x;
|
|
y2 = y1 + tile_y;
|
|
if (x2 > dpy_x) {
|
|
x2 = dpy_x;
|
|
}
|
|
if (y2 > dpy_y) {
|
|
y2 = dpy_y;
|
|
}
|
|
|
|
/* make regions for the tile and the blackouts: */
|
|
black_reg = (sraRegionPtr) sraRgnCreate();
|
|
tile_reg = (sraRegionPtr) sraRgnCreateRect(x1, y1,
|
|
x2, y2);
|
|
|
|
tile_blackout[n].cover = 0;
|
|
tile_blackout[n].count = 0;
|
|
|
|
/* union of blackouts */
|
|
for (b=0; b < blackouts; b++) {
|
|
sraRegionPtr tmp_reg = (sraRegionPtr)
|
|
sraRgnCreateRect(blackr[b].x1,
|
|
blackr[b].y1, blackr[b].x2, blackr[b].y2);
|
|
|
|
sraRgnOr(black_reg, tmp_reg);
|
|
sraRgnDestroy(tmp_reg);
|
|
}
|
|
|
|
if (! sraRgnAnd(black_reg, tile_reg)) {
|
|
/*
|
|
* no intersection for this tile, so we
|
|
* are done.
|
|
*/
|
|
sraRgnDestroy(black_reg);
|
|
sraRgnDestroy(tile_reg);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* loop over rectangles that make up the blackout
|
|
* region:
|
|
*/
|
|
cnt = 0;
|
|
iter = sraRgnGetIterator(black_reg);
|
|
while (sraRgnIteratorNext(iter, &rect)) {
|
|
|
|
/* make sure x1 < x2 and y1 < y2 */
|
|
if (rect.x1 > rect.x2) {
|
|
int tmp = rect.x2;
|
|
rect.x2 = rect.x1;
|
|
rect.x1 = tmp;
|
|
}
|
|
if (rect.y1 > rect.y2) {
|
|
int tmp = rect.y2;
|
|
rect.y2 = rect.y1;
|
|
rect.y1 = tmp;
|
|
}
|
|
|
|
/* store coordinates */
|
|
tile_blackout[n].bo[cnt].x1 = rect.x1;
|
|
tile_blackout[n].bo[cnt].y1 = rect.y1;
|
|
tile_blackout[n].bo[cnt].x2 = rect.x2;
|
|
tile_blackout[n].bo[cnt].y2 = rect.y2;
|
|
|
|
/* note if the tile is completely obscured */
|
|
if (rect.x1 == x1 && rect.y1 == y1 &&
|
|
rect.x2 == x2 && rect.y2 == y2) {
|
|
tile_blackout[n].cover = 2;
|
|
if (debug_bo) {
|
|
fprintf(stderr, "full: %d=%d,%d"
|
|
" (%d-%d) (%d-%d)\n",
|
|
n, tx, ty, x1, x2, y1, y2);
|
|
}
|
|
} else {
|
|
tile_blackout[n].cover = 1;
|
|
if (debug_bo) {
|
|
fprintf(stderr, "part: %d=%d,%d"
|
|
" (%d-%d) (%d-%d)\n",
|
|
n, tx, ty, x1, x2, y1, y2);
|
|
}
|
|
}
|
|
|
|
if (++cnt >= BO_MAX) {
|
|
rfbLog("too many blackout rectangles "
|
|
"for tile %d=%d,%d.\n", n, tx, ty);
|
|
break;
|
|
}
|
|
}
|
|
sraRgnReleaseIterator(iter);
|
|
|
|
sraRgnDestroy(black_reg);
|
|
sraRgnDestroy(tile_reg);
|
|
|
|
tile_blackout[n].count = cnt;
|
|
if (debug_bo && cnt > 1) {
|
|
rfbLog("warning: multiple region overlaps[%d] "
|
|
"for tile %d=%d,%d.\n", cnt, n, tx, ty);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void initialize_xinerama (void) {
|
|
#if !LIBVNCSERVER_HAVE_LIBXINERAMA
|
|
rfbLog("Xinerama: Library libXinerama is not available to determine\n");
|
|
rfbLog("Xinerama: the head geometries, consider using -blackout\n");
|
|
rfbLog("Xinerama: if the screen is non-rectangular.\n");
|
|
#else
|
|
XineramaScreenInfo *sc, *xineramas;
|
|
sraRegionPtr black_region, tmp_region;
|
|
sraRectangleIterator *iter;
|
|
sraRect rect;
|
|
char *bstr, *tstr;
|
|
int ev, er, i, n, rcnt;
|
|
|
|
if (raw_fb && ! dpy) return; /* raw_fb hack */
|
|
|
|
if (! XineramaQueryExtension(dpy, &ev, &er)) {
|
|
rfbLog("Xinerama: disabling: display does not support it.\n");
|
|
xinerama = 0;
|
|
xinerama_present = 0;
|
|
return;
|
|
}
|
|
if (! XineramaIsActive(dpy)) {
|
|
/* n.b. change to XineramaActive(dpy, window) someday */
|
|
rfbLog("Xinerama: disabling: not active on display.\n");
|
|
xinerama = 0;
|
|
xinerama_present = 0;
|
|
return;
|
|
}
|
|
xinerama_present = 1;
|
|
|
|
/* n.b. change to XineramaGetData() someday */
|
|
xineramas = XineramaQueryScreens(dpy, &n);
|
|
rfbLog("Xinerama: number of sub-screens: %d\n", n);
|
|
|
|
if (n == 1) {
|
|
rfbLog("Xinerama: no blackouts needed (only one"
|
|
" sub-screen)\n");
|
|
XFree(xineramas);
|
|
return; /* must be OK w/o change */
|
|
}
|
|
|
|
black_region = sraRgnCreateRect(0, 0, dpy_x, dpy_y);
|
|
|
|
sc = xineramas;
|
|
for (i=0; i<n; i++) {
|
|
int x, y, w, h;
|
|
|
|
x = sc->x_org;
|
|
y = sc->y_org;
|
|
w = sc->width;
|
|
h = sc->height;
|
|
|
|
tmp_region = sraRgnCreateRect(x, y, x + w, y + h);
|
|
|
|
sraRgnSubtract(black_region, tmp_region);
|
|
sraRgnDestroy(tmp_region);
|
|
sc++;
|
|
}
|
|
XFree(xineramas);
|
|
|
|
if (sraRgnEmpty(black_region)) {
|
|
rfbLog("Xinerama: no blackouts needed (screen fills"
|
|
" rectangle)\n");
|
|
sraRgnDestroy(black_region);
|
|
return;
|
|
}
|
|
|
|
/* max len is 10000x10000+10000+10000 (23 chars) per geometry */
|
|
rcnt = (int) sraRgnCountRects(black_region);
|
|
bstr = (char *) malloc(30 * (rcnt+1));
|
|
tstr = (char *) malloc(30);
|
|
bstr[0] = '\0';
|
|
|
|
iter = sraRgnGetIterator(black_region);
|
|
while (sraRgnIteratorNext(iter, &rect)) {
|
|
int x, y, w, h;
|
|
|
|
/* make sure x1 < x2 and y1 < y2 */
|
|
if (rect.x1 > rect.x2) {
|
|
int tmp = rect.x2;
|
|
rect.x2 = rect.x1;
|
|
rect.x1 = tmp;
|
|
}
|
|
if (rect.y1 > rect.y2) {
|
|
int tmp = rect.y2;
|
|
rect.y2 = rect.y1;
|
|
rect.y1 = tmp;
|
|
}
|
|
x = rect.x1;
|
|
y = rect.y1;
|
|
w = rect.x2 - x;
|
|
h = rect.y2 - y;
|
|
sprintf(tstr, "%dx%d+%d+%d,", w, h, x, y);
|
|
strcat(bstr, tstr);
|
|
}
|
|
sraRgnReleaseIterator(iter);
|
|
initialize_blackouts(bstr);
|
|
|
|
free(bstr);
|
|
free(tstr);
|
|
#endif
|
|
}
|
|
|
|
void initialize_blackouts_and_xinerama(void) {
|
|
|
|
blackouts = 0;
|
|
blackout_ptr = 0;
|
|
|
|
if (blackout_str != NULL) {
|
|
initialize_blackouts(blackout_str);
|
|
}
|
|
if (xinerama) {
|
|
initialize_xinerama();
|
|
}
|
|
if (blackouts) {
|
|
blackout_tiles();
|
|
/* schedule a copy_screen(), now is too early. */
|
|
do_copy_screen = 1;
|
|
}
|
|
}
|
|
|
|
void push_sleep(int n) {
|
|
int i;
|
|
for (i=0; i<n; i++) {
|
|
rfbPE(-1);
|
|
if (i != n-1 && defer_update) {
|
|
usleep(defer_update * 1000);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* try to forcefully push a black screen to all connected clients
|
|
*/
|
|
void push_black_screen(int n) {
|
|
if (!screen) {
|
|
return;
|
|
}
|
|
zero_fb(0, 0, dpy_x, dpy_y);
|
|
mark_rect_as_modified(0, 0, dpy_x, dpy_y, 0);
|
|
push_sleep(n);
|
|
}
|
|
|
|
void refresh_screen(int push) {
|
|
int i;
|
|
if (!screen) {
|
|
return;
|
|
}
|
|
mark_rect_as_modified(0, 0, dpy_x, dpy_y, 0);
|
|
for (i=0; i<push; i++) {
|
|
rfbPE(-1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Fill the framebuffer with zero for the prescribed rectangle
|
|
*/
|
|
void zero_fb(int x1, int y1, int x2, int y2) {
|
|
int pixelsize = bpp/8;
|
|
int line, fill = 0;
|
|
char *dst;
|
|
|
|
if (x1 < 0 || x2 <= x1 || x2 > dpy_x) {
|
|
return;
|
|
}
|
|
if (y1 < 0 || y2 <= y1 || y2 > dpy_y) {
|
|
return;
|
|
}
|
|
if (! main_fb) {
|
|
return;
|
|
}
|
|
|
|
dst = main_fb + y1 * main_bytes_per_line + x1 * pixelsize;
|
|
line = y1;
|
|
while (line++ < y2) {
|
|
memset(dst, fill, (size_t) (x2 - x1) * pixelsize);
|
|
dst += main_bytes_per_line;
|
|
}
|
|
}
|
|
|
|
|