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vnc fixes and improvements (Stefano Stabellini)

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this patch fixes a bug and improves the generic pixel conversion
function in vnc.c.
The bug is that when a new vnc client connects we need to reset the flag
has_WMVi but currently we don't.
The generic pixel conversion function is vnc_convert_pixel and currently
is not very efficient since uses the division and multiplication
operators.
To make it more efficient I changed to use bit shift operators instead.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6441 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-01-26 15:37:30 +00:00
parent 99b3718ee1
commit 90a1e3c0b5
3 changed files with 34 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
console.c
View File

@ -1470,6 +1470,9 @@ PixelFormat qemu_different_endianness_pixelformat(int bpp)
pf.rshift = 0;
pf.gshift = 8;
pf.bshift = 16;
pf.rbits = 8;
pf.gbits = 8;
pf.bbits = 8;
break;
case 32:
pf.rmask = 0x0000FF00;
@ -1484,6 +1487,10 @@ PixelFormat qemu_different_endianness_pixelformat(int bpp)
pf.rshift = 8;
pf.gshift = 16;
pf.bshift = 24;
pf.rbits = 8;
pf.gbits = 8;
pf.bbits = 8;
pf.abits = 8;
break;
default:
break;
@ -1512,6 +1519,9 @@ PixelFormat qemu_default_pixelformat(int bpp)
pf.rshift = 11;
pf.gshift = 5;
pf.bshift = 0;
pf.rbits = 5;
pf.gbits = 6;
pf.bbits = 5;
break;
case 24:
pf.rmask = 0x00FF0000;
@ -1523,6 +1533,9 @@ PixelFormat qemu_default_pixelformat(int bpp)
pf.rshift = 16;
pf.gshift = 8;
pf.bshift = 0;
pf.rbits = 8;
pf.gbits = 8;
pf.bbits = 8;
case 32:
pf.rmask = 0x00FF0000;
pf.gmask = 0x0000FF00;
@ -1535,6 +1548,10 @@ PixelFormat qemu_default_pixelformat(int bpp)
pf.rshift = 16;
pf.gshift = 8;
pf.bshift = 0;
pf.rbits = 8;
pf.gbits = 8;
pf.bbits = 8;
pf.abits = 8;
break;
default:
break;

1
console.h
View File

@ -83,6 +83,7 @@ struct PixelFormat {
uint32_t rmask, gmask, bmask, amask;
uint8_t rshift, gshift, bshift, ashift;
uint8_t rmax, gmax, bmax, amax;
uint8_t rbits, gbits, bbits, abits;
};
struct DisplaySurface {

22
vnc.c
View File

@ -56,6 +56,12 @@ static void vnc_debug_gnutls_log(int level, const char* str) {
#define VNC_DEBUG(fmt, ...) do { } while (0)
#endif
#define count_bits(c, v) { \
for (c = 0; v; v >>= 1) \
{ \
c += v & 1; \
} \
}
typedef struct Buffer
{
@ -329,12 +335,12 @@ static void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
{
uint8_t r, g, b;
r = ((v >> vs->serverds.pf.rshift) & vs->serverds.pf.rmax) * (vs->clientds.pf.rmax + 1) /
(vs->serverds.pf.rmax + 1);
g = ((v >> vs->serverds.pf.gshift) & vs->serverds.pf.gmax) * (vs->clientds.pf.gmax + 1) /
(vs->serverds.pf.gmax + 1);
b = ((v >> vs->serverds.pf.bshift) & vs->serverds.pf.bmax) * (vs->clientds.pf.bmax + 1) /
(vs->serverds.pf.bmax + 1);
r = ((((v & vs->serverds.pf.rmask) >> vs->serverds.pf.rshift) << vs->clientds.pf.rbits) >>
vs->serverds.pf.rbits);
g = ((((v & vs->serverds.pf.gmask) >> vs->serverds.pf.gshift) << vs->clientds.pf.gbits) >>
vs->serverds.pf.gbits);
b = ((((v & vs->serverds.pf.bmask) >> vs->serverds.pf.bshift) << vs->clientds.pf.bbits) >>
vs->serverds.pf.bbits);
v = (r << vs->clientds.pf.rshift) |
(g << vs->clientds.pf.gshift) |
(b << vs->clientds.pf.bshift);
@ -1272,12 +1278,15 @@ static void set_pixel_format(VncState *vs,
vs->clientds = vs->serverds;
vs->clientds.pf.rmax = red_max;
count_bits(vs->clientds.pf.rbits, red_max);
vs->clientds.pf.rshift = red_shift;
vs->clientds.pf.rmask = red_max << red_shift;
vs->clientds.pf.gmax = green_max;
count_bits(vs->clientds.pf.gbits, green_max);
vs->clientds.pf.gshift = green_shift;
vs->clientds.pf.gmask = green_max << green_shift;
vs->clientds.pf.bmax = blue_max;
count_bits(vs->clientds.pf.bbits, blue_max);
vs->clientds.pf.bshift = blue_shift;
vs->clientds.pf.bmask = blue_max << blue_shift;
vs->clientds.pf.bits_per_pixel = bits_per_pixel;
@ -2106,6 +2115,7 @@ static void vnc_connect(VncState *vs)
memset(vs->dirty_row, 0xFF, sizeof(vs->dirty_row));
vs->has_resize = 0;
vs->has_hextile = 0;
vs->has_WMVi = 0;
dcl->dpy_copy = NULL;
vnc_update_client(vs);
reset_keys(vs);