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ui/vnc: introduce VNC_DIRTY_PIXELS_PER_BIT macro

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Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Peter Lieven 2014-01-08 10:08:33 +01:00 committed by Gerd Hoffmann
parent 38ee14f4f3
commit b4c85ddcec
2 changed files with 46 additions and 25 deletions
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65
ui/vnc.c
View File

@ -442,17 +442,19 @@ static void vnc_dpy_update(DisplayChangeListener *dcl,
iteration. otherwise, if (x % 16) != 0, the last iteration may span
two 16-pixel blocks but we only mark the first as dirty
*/
w += (x % 16);
x -= (x % 16);
w += (x % VNC_DIRTY_PIXELS_PER_BIT);
x -= (x % VNC_DIRTY_PIXELS_PER_BIT);
x = MIN(x, width);
y = MIN(y, height);
w = MIN(x + w, width) - x;
h = MIN(h, height);
for (; y < h; y++)
for (i = 0; i < w; i += 16)
set_bit((x + i) / 16, s->dirty[y]);
for (; y < h; y++) {
for (i = 0; i < w; i += VNC_DIRTY_PIXELS_PER_BIT) {
set_bit((x + i) / VNC_DIRTY_PIXELS_PER_BIT, s->dirty[y]);
}
}
}
void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h,
@ -769,11 +771,12 @@ static void vnc_dpy_copy(DisplayChangeListener *dcl,
y = dst_y + h - 1;
inc = -1;
}
w_lim = w - (16 - (dst_x % 16));
if (w_lim < 0)
w_lim = w - (VNC_DIRTY_PIXELS_PER_BIT - (dst_x % VNC_DIRTY_PIXELS_PER_BIT));
if (w_lim < 0) {
w_lim = w;
else
w_lim = w - (w_lim % 16);
} else {
w_lim = w - (w_lim % VNC_DIRTY_PIXELS_PER_BIT);
}
for (i = 0; i < h; i++) {
for (x = 0; x <= w_lim;
x += s, src_row += cmp_bytes, dst_row += cmp_bytes) {
@ -781,10 +784,11 @@ static void vnc_dpy_copy(DisplayChangeListener *dcl,
if ((s = w - w_lim) == 0)
break;
} else if (!x) {
s = (16 - (dst_x % 16));
s = (VNC_DIRTY_PIXELS_PER_BIT -
(dst_x % VNC_DIRTY_PIXELS_PER_BIT));
s = MIN(s, w_lim);
} else {
s = 16;
s = VNC_DIRTY_PIXELS_PER_BIT;
}
cmp_bytes = s * VNC_SERVER_FB_BYTES;
if (memcmp(src_row, dst_row, cmp_bytes) == 0)
@ -792,7 +796,8 @@ static void vnc_dpy_copy(DisplayChangeListener *dcl,
memmove(dst_row, src_row, cmp_bytes);
QTAILQ_FOREACH(vs, &vd->clients, next) {
if (!vnc_has_feature(vs, VNC_FEATURE_COPYRECT)) {
set_bit(((x + dst_x) / 16), vs->dirty[y]);
set_bit(((x + dst_x) / VNC_DIRTY_PIXELS_PER_BIT),
vs->dirty[y]);
}
}
}
@ -904,7 +909,7 @@ static int vnc_update_client(VncState *vs, int has_dirty, bool sync)
for (y = 0; y < height; y++) {
int x;
int last_x = -1;
for (x = 0; x < width / 16; x++) {
for (x = 0; x < width / VNC_DIRTY_PIXELS_PER_BIT; x++) {
if (test_and_clear_bit(x, vs->dirty[y])) {
if (last_x == -1) {
last_x = x;
@ -914,16 +919,22 @@ static int vnc_update_client(VncState *vs, int has_dirty, bool sync)
int h = find_and_clear_dirty_height(vs, y, last_x, x,
height);
n += vnc_job_add_rect(job, last_x * 16, y,
(x - last_x) * 16, h);
n += vnc_job_add_rect(job,
last_x * VNC_DIRTY_PIXELS_PER_BIT,
y,
(x - last_x) *
VNC_DIRTY_PIXELS_PER_BIT,
h);
}
last_x = -1;
}
}
if (last_x != -1) {
int h = find_and_clear_dirty_height(vs, y, last_x, x, height);
n += vnc_job_add_rect(job, last_x * 16, y,
(x - last_x) * 16, h);
n += vnc_job_add_rect(job, last_x * VNC_DIRTY_PIXELS_PER_BIT,
y,
(x - last_x) * VNC_DIRTY_PIXELS_PER_BIT,
h);
}
}
@ -1841,7 +1852,7 @@ static void framebuffer_update_request(VncState *vs, int incremental,
int w, int h)
{
int i;
const size_t width = surface_width(vs->vd->ds) / 16;
const size_t width = surface_width(vs->vd->ds) / VNC_DIRTY_PIXELS_PER_BIT;
const size_t height = surface_height(vs->vd->ds);
if (y_position > height) {
@ -2543,7 +2554,9 @@ static int vnc_refresh_lossy_rect(VncDisplay *vd, int x, int y)
vs->lossy_rect[sty][stx] = 0;
for (j = 0; j < VNC_STAT_RECT; ++j) {
bitmap_set(vs->dirty[y + j], x / 16, VNC_STAT_RECT / 16);
bitmap_set(vs->dirty[y + j],
x / VNC_DIRTY_PIXELS_PER_BIT,
VNC_STAT_RECT / VNC_DIRTY_PIXELS_PER_BIT);
}
has_dirty++;
}
@ -2690,17 +2703,21 @@ static int vnc_refresh_server_surface(VncDisplay *vd)
}
server_ptr = server_row;
for (x = 0; x + 15 < width;
x += 16, guest_ptr += cmp_bytes, server_ptr += cmp_bytes) {
if (!test_and_clear_bit((x / 16), vd->guest.dirty[y]))
for (x = 0; x + VNC_DIRTY_PIXELS_PER_BIT - 1 < width;
x += VNC_DIRTY_PIXELS_PER_BIT, guest_ptr += cmp_bytes,
server_ptr += cmp_bytes) {
if (!test_and_clear_bit((x / VNC_DIRTY_PIXELS_PER_BIT),
vd->guest.dirty[y])) {
continue;
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0)
}
if (memcmp(server_ptr, guest_ptr, cmp_bytes) == 0) {
continue;
}
memcpy(server_ptr, guest_ptr, cmp_bytes);
if (!vd->non_adaptive)
vnc_rect_updated(vd, x, y, &tv);
QTAILQ_FOREACH(vs, &vd->clients, next) {
set_bit((x / 16), vs->dirty[y]);
set_bit((x / VNC_DIRTY_PIXELS_PER_BIT), vs->dirty[y]);
}
has_dirty++;
}

6
ui/vnc.h
View File

@ -81,8 +81,12 @@ typedef void VncSendHextileTile(VncState *vs,
#define VNC_MAX_WIDTH 2560
#define VNC_MAX_HEIGHT 2048
/* VNC_DIRTY_PIXELS_PER_BIT is the number of dirty pixels represented
* by one bit in the dirty bitmap */
#define VNC_DIRTY_PIXELS_PER_BIT 16
/* VNC_DIRTY_BITS is the number of bits in the dirty bitmap. */
#define VNC_DIRTY_BITS (VNC_MAX_WIDTH / 16)
#define VNC_DIRTY_BITS (VNC_MAX_WIDTH / VNC_DIRTY_PIXELS_PER_BIT)
#define VNC_STAT_RECT 64
#define VNC_STAT_COLS (VNC_MAX_WIDTH / VNC_STAT_RECT)