mediapointer-dvb-s2/v4l2-apps/libv4l/TODO, branch master

libv4l: add gamma correction to video processing

2009-05-26T08:07:18+00:00

From: Hans de Goede 

add gamma correction to the video processing, and enable it by default
(correct for a display gamma of 1.5) for pac207 based cams.

Priority: normal

Signed-off-by: Hans de Goede

libv4l: add software autogain / exposure

2009-05-25T13:25:15+00:00

From: Hans de Goede 

Add software autogain / exposure, for camera's which have gain and
exposure controls but do not contain the ability to calculate the average
lumination in hardware (which is needed to do this in the kernel). This
patch enables this for the spca561 rev12a, but it should be usefull for
other cameras too.

Priority: normal

Signed-off-by: Hans de Goede

libv4l: add support for adding black borders (reverse cropping)

2009-05-22T09:40:31+00:00

From: Hans de Goede 

Add the capability to provide 320x240 to apps if the cam can only
do 320x232 (some zc3xx cams) by adding black borders. And more in
general the capability to make certain standard resolutions available
by adding black borders to slightly smaller resolutions, in case we
encounter more cams which have a hardware limitation which makes them do
a resolution slightly smaller then the standard ones.

Priority: normal

Signed-off-by: Hans de Goede

libv4l: rewrite video processing code

2009-05-21T11:08:29+00:00

From: Hans de Goede 

Rewrite video processing code to make it easier to add more video filters
(and with little extra processing cost). As part of this the normalize
filter has been removed as it wasn't functioning satisfactory anyways

Priority: normal

Signed-off-by: Hans de Goede

libv4l: add fake controls controlling the software h- and v-flipping

2009-05-20T05:23:00+00:00

From: Hans de Goede 

When we need to go through the fake mmap buffer anyways, we can add
fake controls at no cost. So in the case of webcams which only
support non standard pixformats, export fake flipping controls, as this
can be done at no (performace) cost (until the user activates them).

Priority: normal

Signed-off-by: Hans de Goede

libv4l: Only allow supported destination formats when doing processing

2009-04-14T13:03:07+00:00

From: Hans de Goede 

Only report / allow supported destination formats in enum_fmt / try_fmt /
g_fmt / s_fmt when processing, rotating or flipping.

Priority: normal

Signed-off-by: Hans de Goede

libv4l: Enable whitebalancing algorithm based on USB id's

2009-04-14T07:51:35+00:00

From: Hans de Goede 

* Determine wether or not to do whitebalance and/or normalize at all
  based on USB-ID's.
* Add rotate90 hack to flags based on usb-id.

Priority: normal

Signed-off-by: Hans de Goede

libv4l: add video processing: whitebalance and normalize

2009-04-13T18:02:34+00:00

From: Hans de Goede 

As the version number shows this work is the basis for a beta release of the
0.6.x series, the big change here is the addition of video processing to libv4l
currently this only does whitebalance and normalizing (which turns out
to be useless for most cams) but the basic framework for doing video
processing, and being able to control it through fake v4l2 controls using
for example v4l2ucp is there.
The initial version of this code was written by 3 of my computer science
students: Elmar Kleijn, Sjoerd Piepenbrink and Radjnies Bhansingh.
This initial hg commit is a cleaned up and somewhat bug fixed version of
their code.

Priority: normal

Signed-off-by: Hans de Goede

libv4l: add support for converting to YV12 planar

2009-03-11T12:10:27+00:00

From: Hans de Goede 

Add support for converting to YV12 planar (next to the already supported
YU12 / I420) and implement RGB/BGR24 -> YU/YV12 conversion

Priority: normal

Signed-off-by: Hans de Goede

v4l2-apps: move libraries around to make the directory tree flatter

2009-02-13T12:06:29+00:00

From: Hans Verkuil 

Instead of having libv4l2util in v4l2-apps/lib and libv4l in v4l2-apps/lib/libv4l,
both are now moved to v4l2-apps/libv4l2util and v4l2-apps/libv4l.

This is much cleaner and less confusing.

Priority: normal

Signed-off-by: Hans Verkuil