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[Qemu-devel] [PATCHv2 1/6] ui/vnc: introduce VNC_DIRTY_PIXELS_PER_BIT ma
From: |
Peter Lieven |
Subject: |
[Qemu-devel] [PATCHv2 1/6] ui/vnc: introduce VNC_DIRTY_PIXELS_PER_BIT macro |
Date: |
Thu, 21 Nov 2013 09:51:12 +0100 |
Signed-off-by: Peter Lieven <address@hidden>
---
ui/vnc.c | 55 ++++++++++++++++++++++++++++++++++---------------------
ui/vnc.h | 6 +++++-
2 files changed, 39 insertions(+), 22 deletions(-)
diff --git a/ui/vnc.c b/ui/vnc.c
index 5601cc3..67b1f75 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -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 +771,11 @@ static void vnc_dpy_copy(DisplayChangeListener *dcl,
y = dst_y + h - 1;
inc = -1;
}
- w_lim = w - (16 - (dst_x % 16));
+ 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);
+ 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 +783,10 @@ static void vnc_dpy_copy(DisplayChangeListener *dcl,
if ((s = w - w_lim) == 0)
break;
} else if (!x) {
- s = (16 - (dst_x % 16));
+ s = (16 - (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)
@@ -911,7 +913,7 @@ static int vnc_update_client(VncState *vs, int has_dirty)
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;
@@ -921,16 +923,21 @@ static int vnc_update_client(VncState *vs, int has_dirty)
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);
}
}
@@ -1861,7 +1868,7 @@ 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) {
@@ -2563,7 +2570,9 @@ 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++;
}
@@ -2710,17 +2719,21 @@ 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++;
}
diff --git a/ui/vnc.h b/ui/vnc.h
index 6e99213..4a8f33c 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -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)
--
1.7.9.5
- [Qemu-devel] [PATCHv2 0/6] ui/vnc: update optimizations, Peter Lieven, 2013/11/21
- [Qemu-devel] [PATCHv2 2/6] ui/vnc: derive cmp_bytes from VNC_DIRTY_PIXELS_PER_BIT, Peter Lieven, 2013/11/21
- [Qemu-devel] [PATCHv2 4/6] ui/vnc: optimize clearing in find_and_clear_dirty_height(), Peter Lieven, 2013/11/21
- [Qemu-devel] [PATCHv2 1/6] ui/vnc: introduce VNC_DIRTY_PIXELS_PER_BIT macro,
Peter Lieven <=
- [Qemu-devel] [PATCHv2 3/6] ui/vnc: optimize dirty bitmap tracking, Peter Lieven, 2013/11/21
- [Qemu-devel] [PATCHv2 6/6] ui/vnc: disable adaptive update calculations if not needed, Peter Lieven, 2013/11/21
- [Qemu-devel] [PATCHv2 5/6] ui/vnc: optimize setting in vnc_dpy_update(), Peter Lieven, 2013/11/21