<s>
DirectFB	B-Application
(	O
Direct	O
Frame	O
Buffer	O
)	O
is	O
a	O
software	B-Library
library	I-Library
with	O
a	O
small	O
memory	O
footprint	O
that	O
provides	O
graphics	B-Architecture
acceleration	I-Architecture
,	O
input	B-Device
device	I-Device
handling	O
and	O
abstraction	B-Architecture
layer	I-Architecture
,	O
and	O
integrated	O
windowing	B-Application
system	I-Application
with	O
support	O
for	O
translucent	O
windows	O
and	O
multiple	O
display	O
layers	O
on	O
top	O
of	O
the	O
Linux	B-Language
framebuffer	I-Language
without	O
requiring	O
any	O
kernel	B-Operating_System
modifications	O
.	O
</s>
<s>
DirectFB	B-Application
is	O
free	B-License
and	I-License
open-source	I-License
software	I-License
subject	O
to	O
the	O
terms	O
of	O
the	O
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
(	O
LGPL	B-Application
)	O
.	O
</s>
<s>
The	O
library	B-Library
allows	O
developers	O
an	O
alternative	O
to	O
a	O
full	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
(	O
X11	B-Operating_System
)	O
server	O
used	O
in	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
DirectFB	B-Application
allows	O
applications	O
to	O
talk	O
directly	O
to	O
video	O
hardware	O
through	O
a	O
direct	O
API	B-Application
,	O
speeding	O
up	O
and	O
simplifying	O
graphic	O
operations	O
.	O
</s>
<s>
It	O
is	O
often	O
used	O
by	O
games	O
and	O
embedded	B-Architecture
systems	I-Architecture
developers	O
to	O
circumvent	O
the	O
overhead	O
of	O
a	O
full	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
server	O
implementation	O
.	O
</s>
<s>
In	O
2006	O
,	O
a	O
version	O
of	O
DirectFB	B-Application
was	O
included	O
in	O
the	O
software	O
stack	O
for	O
the	O
CE	O
Linux	B-Application
Forum	O
's	O
Audio/Video	O
Graphics	O
Specification	O
V2	O
.	O
</s>
<s>
DirectFB	B-Application
can	O
host	O
XDirectFB	O
,	O
a	O
rootless	O
X	B-Operating_System
server	O
implementation	O
that	O
uses	O
DirectFB	B-Application
windows	O
for	O
X11	B-Operating_System
top-level	O
windows	O
.	O
</s>
<s>
XDirectFB	O
is	O
an	O
interface	O
that	O
mimics	O
the	O
X11	B-Operating_System
interface	O
through	O
the	O
DirectFB	B-Application
API	B-Application
to	O
simplify	O
running	O
applications	O
written	O
for	O
X11	B-Operating_System
on	O
DirectFB	B-Application
.	O
</s>
<s>
DirectFBGL	O
is	O
an	O
OpenGL	B-Application
extension	O
for	O
DirectFB/XDirectFB	O
that	O
uses	O
Direct	B-Application
Rendering	I-Application
Infrastructure	I-Application
(	O
DRI	O
)	O
in	O
the	O
Mesa	B-Application
3D	I-Application
library	B-Library
to	O
support	O
OpenGL	B-Application
hardware	O
acceleration	O
.	O
</s>
<s>
Among	O
the	O
products	O
that	O
use	O
DirectFB	B-Application
are	O
LinuxTV	B-Language
,	O
Ben	B-Application
Nanonote	I-Application
,	O
the	O
unreleased	O
Palm	B-Application
Foleo	I-Application
mobile	O
companion	O
,	O
the	O
webOS	B-Operating_System
operating	B-General_Concept
system	I-General_Concept
,	O
Panasonic	O
Viera	O
Connect	O
TVs	O
and	O
the	O
Philips	O
TVs	O
based	O
on	O
jointSPACE	O
.	O
</s>
