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# Date Author Comment
23bfe28f 03/11/2011 12:12 am Stefan Weil

vnc: Fix stack corruption and other bitmap related bugs

Commit bc2429b9174ac2d3c56b7fd35884b0d89ec7fb02 introduced
a severe bug (stack corruption).

bitmap_clear was called with a wrong argument
which caused out-of-bound writes to the local variable width_mask....

bc2429b9 02/24/2011 12:28 am Corentin Chary

vnc: use the new generic bitmap functions

Switch to bitmap.h and bitops.h instead of redefining our own bitmap
helpers.

Signed-off-by: Corentin Chary <>
Signed-off-by: Anthony Liguori <>

80e0c8c3 02/24/2011 12:28 am Corentin Chary

vnc: add a non-adaptive option

This option allow to disable adaptive behaviors in some encodings.

Signed-off-by: Corentin Chary <>
Signed-off-by: Anthony Liguori <>

999342a0 02/24/2011 12:28 am Corentin Chary

vnc: add a way to get the update frequency for a given region

This patch compute the update frequency (in Hz) for each 64x64 rects.
Any adaptive encoding can get this value using vnc_update_freq(), and
switch to a lossy encoding if the value is too high....

7d964c9d 02/24/2011 12:28 am Corentin Chary

vnc: refresh lossy rect after a given timeout

If an adaptive encoding has choosen to send a lossy update
based on the result of vnc_update_freq(), then it should advertise
it with vnc_sent_lossy_rect(). This will allow to automatically refresh
this rect once it's static again....

148954fa 02/24/2011 12:28 am Corentin Chary

vnc: Add ZRLE and ZYWRLE encodings.

Add ZRLE [1] and ZYWRLE [2] encodings. The code is inspire^W stolen
from libvncserver (again), but have been rewriten to match QEMU coding
style.

[1] http://www.realvnc.com/docs/rfbproto.pdf
[2] http://micro-vnc.jp/research/remote_desktop_ng/ZYWRLE/publications/...

3c9405a0 12/09/2010 03:23 pm Gerd Hoffmann

vnc: support password expire

This patch adds support for expiring passwords to vnc. It adds a new
vnc_display_pw_expire() function which specifies the time when the
password will expire.

Signed-off-by: Gerd Hoffmann <>

efe556ad 07/27/2010 01:36 am Corentin Chary

vnc: tight add PNG encoding

Introduce a new encoding: VNC_ENCODING_TIGHT_PNG [1] (-269) with a new
tight filter VNC_TIGHT_PNG (0x0A). When the client tells it supports the Tight PNG
encoding, the server will use tight, but will always send encoding pixels using...

d1af0e05 07/27/2010 01:36 am Corentin Chary

vnc: encapsulate encoding members

This will allow to implement the threaded VNC server in a
more cleaner way.

Signed-off-by: Corentin Chary <>
Signed-off-by: Anthony Liguori <>

bd023f95 07/27/2010 01:36 am Corentin Chary

vnc: threaded VNC server

Implement a threaded VNC server using the producer-consumer model.
The main thread will push encoding jobs (a list a rectangles to update)
in a queue, and the VNC worker thread will consume that queue and send
framebuffer updates to the output buffer....

3e230dd2 07/27/2010 01:35 am Corentin Chary

ui: move all ui components in ui/

Move sdl, vnc, curses and cocoa UI into ui/ to cleanup
the root directory. Also remove some unnecessary explicit
targets from Makefile.

aliguori: fix build when srcdir != objdir

Signed-off-by: Corentin Chary <>...