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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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669d7090ca
The video encoder uses the client reports and/or notifications of server frame drops as its feedback mechanisms. In particular it keeps track of the maximum video margin and reduces the bit rate whenever the margin goes below certain thresholds or decreases too sharply. It uses these to figure out the lowest bit rate that causes negative feedback, and the highest bit rate that allows a return to positive feedbacks. It then works to narrow this range and settles on the lower end once the spread has gone below a given threshold. All the while it monitors the effective bit rate to ensure the target bit rate does not grow significantly beyond what the GStreamer encoder will produce: this avoids target bit rate 'bubbles' which would invariably be followed by a bit rate crash with accompanying frame loss. As soon as the network feedback indicates a significant degradation the bit rate is lowered to minimize the risk of frame loss and/or long freezes. It also relies on the existing shaping of the GStreamer output bit rate to minimize the pipeline reconfigurations. Signed-off-by: Francois Gouget <fgouget@codeweavers.com> |
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| docs | ||
| m4 | ||
| server | ||
| spice-common@4284011bdc | ||
| tests | ||
| tools | ||
| uncrustify_cfg | ||
| .gitignore | ||
| .gitmodules | ||
| .mailmap | ||
| .travis.yml | ||
| AUTHORS | ||
| autogen.sh | ||
| cfg.mk | ||
| ChangeLog | ||
| configure.ac | ||
| COPYING | ||
| GNUmakefile | ||
| maint.mk | ||
| Makefile.am | ||
| NEWS | ||
| README | ||
| spice-server.pc.in | ||
| TODO.multiclient | ||
SPICE: Simple Protocol for Independent Computing Environments
=============================================================
SPICE is a remote display system built for virtual environments which
allows you to view a computing 'desktop' environment not only on the
machine where it is running, but from anywhere on the Internet and
from a wide variety of machine architectures.
Installation
------------
The SPICE package uses GNU autotools, so the build install process
follows the standard process documented in the INSTALL file. As a
quick start you can do
./configure --prefix=/usr --sysconfdir=/etc \
--localstatedir=/var --libdir=/usr/lib
make
sudo make install
Or to install into a private user specific location
./configure --prefix=$HOME/spice
make
make install
The following mandatory dependancies are required in order to
build SPICE
Spice protocol >= 0.9.0
Pixman >= 0.17.7
OpenSSL
libjpeg
zlib
Cyrus-SASL
The following optional dependancies increase the available
functionality
GE Gui >= 0.6.0, < 0.7.0 (GUI app support)
OpenGL (GUI app support)
Alsa (Linux support)
XRandR >= 1.2 (X11 support)
Xinerama >= 1.0 (X11 support)
libcacard >= 0.1.2 (Smartcard support)
Communication
-------------
To communicate with the development team, or to post patches
there is a technical mailing list:
http://lists.freedesktop.org/mailman/listinfo/spice-devel
There is also a mailing list for new release announcements:
http://lists.freedesktop.org/archives/spice-announce/
To view known bugs, or report new bugs, in SPICE visit
https://bugs.freedesktop.org/describecomponents.cgi?product=Spice
Bugs found when using an OS distribution's binary packages should
be reported to the OS vendors' own bug tracker first.
The latest SPICE code can be found in GIT at:
http://cgit.freedesktop.org/spice/
Licensing
---------
SPICE is provided under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Please see the COPYING file for the complete LGPLv2+ license
terms, or visit <http://www.gnu.org/licenses/>.
Experimental Features
---------------------
To enable multiple client connections, set:
SPICE_DEBUG_ALLOW_MC=1
-- End of readme