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- 23 Jan, 2012 1 commit
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Hans Verkuil authored
If V4L2_CAP_DEVICE_CAPS is set, then the new device_caps field is filled with the capabilities of the opened device node. The capabilities field traditionally contains the capabilities of the physical device, being a superset of all capabilities available at the several device nodes. E.g., if you open /dev/video0, then if it contains VBI caps then that means that there is a corresponding vbi node as well. And the capabilities field of both the video and vbi nodes should contain identical caps. However, it would be very useful to also have a capabilities field that contains just the caps for the currently open device, hence the new CAP bit and field. Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 11 Jan, 2012 1 commit
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Tomasz Stanislawski authored
This patch adds a documentation for VIDIOC_{G/S}_SELECTION ioctl. Moreover, the patch adds the description of modeling of composing, cropping and scaling features in V4L2. Finally, some examples are presented. Signed-off-by:
Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 03 Nov, 2011 1 commit
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Guennadi Liakhovetski authored
[mchehab@redhat.com: remove emacs format crap at the end of the new files] Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 21 Sep, 2011 1 commit
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Hans Verkuil authored
Add a new VOLATILE control flag that is set for volatile controls. That way applications know whether the value of the control is volatile (i.e. can change continuously) or not. Until now this was an internal property, but it is useful to know in userspace as well. A typical use case is the gain value when autogain is on. In that case the hardware will continuously adjust the gain based various environmental factors. This patch just adds and documents the flag, it's not yet used. Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Acked-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 27 Jul, 2011 4 commits
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Hans Verkuil authored
[mchehab@redhat.com: Fix a merge conflict and make compat.xml coherent with v4l2.xml] Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Acked-by:
Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Mauro Carvalho Chehab authored
Currently, -EINVAL is used to return either when an IOCTL is not implemented, or if the ioctl was not implemented. Acked-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Mauro Carvalho Chehab authored
Acked-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Mauro Carvalho Chehab authored
This patch addresses several issues pointed by Randy Dunlap <rdunlap@xenotime.net> at changeset ece722c: - In the generated index.html file, "media" is listed first, but it should be listed in alphabetical order, not first. - The generated files are (hidden) in .tmpmedia/ - The link from the top-level index.html file to "media" is to media/index.html, but the file is actually in .tmpmedia/media/index.html - Please build docs with and without using "O=builddir" and test that. - Would it be possible for media to have its own Makefile instead of merging into this one? Due to the way cleandocs target works, I had to rename the media DocBook to media_api, otherwise cleandocs would remove the /media directory. Thanks-to: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 22 Mar, 2011 5 commits
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Pawel Osciak authored
Multi-planar API was added to 2.6.39 version of Video for Linux 2 API. Signed-off-by:
Pawel Osciak <pawel@osciak.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Hans Verkuil authored
Signed-off-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Antti Koskipaa authored
This patch adds the VIDIOC_SUBDEV_S_CROP and G_CROP ioctls to the userland API. CROPCAP is not implemented because it's redundant. Signed-off-by:
Antti Koskipaa <akoskipa@gmail.com> Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored
The three new ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, VIDIOC_SUBDEV_G_FRAME_INTERVAL and VIDIOC_SUBDEV_S_FRAME_INTERVAL can be used to enumerate and configure a subdev's frame rate from userspace. Two new video::g/s_frame_interval subdev operations are introduced to support those ioctls. The existing video::g/s_parm operations are deprecated and shouldn't be used anymore. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
Sakari Ailus <sakari.ailus@iki.fi> Acked-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored
Add a userspace API to get, set and enumerate the media format on a subdev pad. The format at the output of a subdev usually depends on the format at its input(s). The try format operation is thus not suitable for probing format at individual pads, as it can't modify the device state and thus can't remember the format tried at the input to compute the output format. To fix the problem, pass an extra argument to the get/set format operations to select the 'try' or 'active' format. The try format is used when probing the subdev. Setting the try format must not change the device configuration but can store data for later reuse. Data storage is provided at the file-handle level so applications probing the subdev concurently won't interfere with each other. The active format is used when configuring the subdev. It's identical to the format handled by the usual get/set operations. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by:
Sakari Ailus <sakari.ailus@iki.fi> Acked-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 21 Mar, 2011 3 commits
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Mauro Carvalho Chehab authored
Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Hans Verkuil authored
Signed-off-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Pawel Osciak authored
Add DocBook documentation for the new multi-planar API extensions to the Video for Linux 2 API DocBook. Signed-off-by:
Pawel Osciak <pawel@osciak.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 19 Jan, 2011 1 commit
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Hans Verkuil authored
Signed-off-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 21 Oct, 2010 1 commit
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Hans Verkuil authored
Remove all references to /dev/vtx in the documentation, except for some historical comments in dev-teletext.xml. Documentation/devices.txt is not updated, this will go through Alan Cox who maintains this file. Signed-off-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 01 Jun, 2010 1 commit
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Andy Walls authored
A trivial change to update my email address from my dead awalls@radix.net address to my current awalls@md.metrocast.net address. Signed-off-by:
Andy Walls <awalls@md.metrocast.net> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 19 May, 2010 1 commit
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Sakari Ailus authored
Add documentation on how to use V4L2 events, both for V4L2 drivers and for V4L2 applications. Signed-off-by:
Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 16 Dec, 2009 2 commits
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Hans Verkuil authored
Signed-off-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Muralidharan Karicheri authored
This patch updates the v4l2-dvb documentation for the new video timings API added. Also updated the document based on comments from Hans Verkuil. Signed-off-by:
Muralidharan Karicheri <m-karicheri2@ti.com> Signed-off-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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- 19 Sep, 2009 2 commits
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Mauro Carvalho Chehab authored
That was weird: on some distros, we need to remove <reference> tag for it to work. Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Mauro Carvalho Chehab authored
The V4L and DVB API's are there for a long time. however, up to now, no efforts were done to merge them to kernel DocBook. This patch adds the current versions of the specs as an unique compendium. Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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