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From: Hans de Goede <hdegoede@redhat.com>
Improved pac207 decompression code to also support higher compression
modes of the pac207, which enables us to use higher framerates.
Many many thanks to Bertrik Sikken for figuring the decompression out!
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Mauro Carvalho Chehab <mchehab@redhat.com>
Currently, em28xx driver outputs webcams only at RGB565 format. However,
several webcam applications don't support this format.
In order to properly work with those applications, a RGB565 handler should be
added at libv4l.
Tested with Silvercrest 1.3 mpix with v4l2grab (V4L2, with native libv4l
support) and two LD_PRELOAD applications: camorama (V4L1 API) and skype (using compat32).
Priority: normal
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
libv4l: add support for decompressing ov511 compressed frames
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
Change support for decompressing ov518 "JPEG" to piping data through an
external helper as I've failed to contact Mark W. McClelland to get
permission to relicense the code. If you know a working email address for
Mark W. McClelland, please let me know.
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
Add support for decompressing ov518 "JPEG", note this code is not
LGPL yet, I'm waiting for a license change permission. If I do not
get one this will be moved to an external helper and the data
will be piped through this, to keep libv4l2.so LGPL
Priority: normal
Signed-off-by: Hans de Goede
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From: Hans de Goede <hdegoede@redhat.com>
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 <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
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 <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
Before this patch libv4l only support 180 degree rotation, which is
hflip and vflip combined, this patch adds support for separate
hflipping and vflipping.
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
* 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 <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
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 <hdegoede@redhat.com>
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From: Brian Johnson <brijohn@gmail.com>
sn9c20x cams have occasional bad jpeg frames, drop these to avoid the
flickering effect they cause, by: Brian Johnson <brijohn@gmail.com>
Priority: normal
Signed-off-by: Brian Johnson <brijohn@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans Verkuil <hverkuil@xs4all.nl>
Priority: normal
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Theodore Kilgore <kilgota@auburn.edu>
Support the decompression used by the SQ905C cameras (0x2770:0x905C) and
some other related cameras. There is at the moment no support module for
these cameras in streaming mode, but I intend to submit one.
This contribution was created in whole by me, based upon code in libgphoto2
which was created in whole by me, and which was licensed for
libgphoto2 under the LGPL license.
Priority: normal
Signed-off-by: Theodore Kilgore <kilgota@auburn.edu>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Kyle Guinn <elyk03@gmail.com>
libv4l: Add MR97310A decompression
Priority: normal
Signed-off-by: Kyle Guinn <elyk03@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Vasily Khoruzhick <anarsoul@gmail.com>
Recent sn9c20x driver written by microdia project
(http://groups.goolge.com/group/microdia) introduce new output format -
sn9c20x-i420. This format is actually scrambled yuv420, so it's very easy and
fast to convert it to yuv420. This patch adds sn9c20x-i420 decoder to the
libv4l-0.5.7
This decoder is much faster than jpeg one (sn9c20x supports JPEG too):
sn9c20x-i420 decoder eats only 10% of 1GHz CPU at 640x480x25fps vs 40% of
1GHz CPU in jpeg at same frame size/rate.
This format should be preffered for sn9c20x, because sn9c20x driver supports
SBGGR8 too, so it should go before SBGGR8 in supported_src_pixfmts.
Priority: normal
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com
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From: Hans de Goede <hdegoede@redhat.com>
Switch to using USB-id's instead of USB product string, as not all devices
set a unique product string. This fixes the upside down issues with
genius e-messenger 112 cams
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
Remove v4lconvert_yvyu_to_yuv420 function as its functionality is
duplicate with v4lconvert_yuyv_to_yuv420
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Julien BLACHE <jb@jblache.org>
Attached is a patch to add UYVY support to libv4lconvert. It's
obviously a shameless respin of the YVYU conversion routines :P
Tested on a USB Apple iSight, which only supports UYVY.
Priority: normal
Signed-off-by: Julien BLACHE <jb@jblache.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
Avoid the use of try_fmt as much as possible on UVC cams, instead use the
results of the enum_framesizes ioctl. This is because:
1) try_fmt actually causes IO with UVC cams making apps which do lot of
querying of device capabilities slow (cheese)
2) some buggy cams don't like getting lots of UVC video probes and crash
when they do
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
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 <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
When conversion requires multiple passes don't alloc the needed temporary
buffer on the stack, as some apps (ekiga) use so much stack themselves
this causes us to run out of stack space
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans de Goede <hdegoede@redhat.com>
* Add support for software cropping from 352x288 -> 320x240 / 176x144 ->
160x120, so that apps which will only work with vga resolutions like
320x240 (Skype!) will work with cams/drivers which do not support cropping
CIF resolutions to VGA resolutions in hardware. This makes all 2.6.27 gspca
supported cams, except for the pac7302 which only does 640x480 (and skype
wants 320x240), work with skype
* The v4lconvert_convert function was becoming a bit of a mess, so split the
functionailiy into seperate v4lconvert_convert_pixfmt, v4lconvert_rotate and
v4lconvert_crop functions, and make v4lconvert_convert a frontend to
these
Priority: normal
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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From: Hans Verkuil <hverkuil@xs4all.nl>
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 <hverkuil@xs4all.nl>
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