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gstreamer/sys/v4l2
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Víctor Manuel Jáquez Leal 6ec3cc70b2 v4l2object: Don't check size in a non-list value 
After commit 1ea9735a I see these error while using the webcam
integrated in my laptop:

GStreamer-CRITICAL **: gst_value_list_get_size: assertion 'GST_VALUE_HOLDS_LIST (value)' failed

The issue is gst_v4l2src_value_simplify() was doing its job of
generating a single value, rather than the original list. That why,
when getting the list size, a critical warning was raised.

This patch takes advantage of the compiler optimizations to verify
first if the list was simplified, thus use it directly, otherwise,
if it is a list, verify its size.

https://bugzilla.gnome.org/show_bug.cgi?id=776106
2016-12-14 19:22:36 +01:00
..
ext v4l2: Update kernel headers to latest from media tree 2015-06-08 17:56:48 -04:00
gstv4l2.c v4l2: fix v4l2 probe build error 2016-07-07 23:55:33 +01:00
gstv4l2allocator.c v4l2: Warn, don't assert if v4l gives us a buffer with a too large size 2016-11-01 20:12:56 +02:00
gstv4l2allocator.h gstv4l2bufferpool: handle -EPIPE from DQBUF to signal EOS 2015-06-09 21:56:40 -04:00
gstv4l2bufferpool.c gstv4l2bufferpool: lock flush_stop against regular qbuf 2016-11-24 11:47:07 -05:00
gstv4l2bufferpool.h v4l2: Workaround driver not setting field correctly 2015-03-01 14:03:04 -05:00
gstv4l2colorbalance.c Fix FSF address 2012-11-04 00:07:18 +00:00
gstv4l2colorbalance.h Fix FSF address 2012-11-04 00:07:18 +00:00
gstv4l2deviceprovider.c v4l2: consistently check #ifdef HAVE_GUDEV instead of #if 2016-08-18 20:20:20 +01:00
gstv4l2deviceprovider.h pulse, v4l2: add missing G_END_DECLS in some places 2014-10-28 21:32:06 +00:00
gstv4l2object.c v4l2object: Don't check size in a non-list value 2016-12-14 19:22:36 +01:00
gstv4l2object.h v4l2: use opened device caps instead of physical device ones 2016-07-07 17:46:06 -04:00
gstv4l2radio.c v4l2: use opened device caps instead of physical device ones 2016-07-07 17:46:06 -04:00
gstv4l2radio.h Fix FSF address 2012-11-04 00:07:18 +00:00
gstv4l2sink.c v4l2: use opened device caps instead of physical device ones 2016-07-07 17:46:06 -04:00
gstv4l2sink.h v4l2: De-duplicate caps probing between src and sink 2013-08-19 13:08:18 -04:00
gstv4l2src.c v4l2src: release buffer if create fails 2016-11-24 11:47:07 -05:00
gstv4l2src.h v4l2src: device sequence/offset correction in case of renegotiation 2015-04-02 17:40:20 -04:00
gstv4l2transform.c v4l2: Add an error return to _try/_set_format 2016-06-07 17:02:43 -04:00
gstv4l2transform.h v4l2transform: Check if caps have changes before asserting 2014-05-08 15:56:36 -04:00
gstv4l2tuner.c v4l2: Use G_DEFINE_ macros for added thread safety 2013-08-19 12:48:35 -04:00
gstv4l2tuner.h pulse, v4l2: add missing G_END_DECLS in some places 2014-10-28 21:32:06 +00:00
gstv4l2videodec.c v4l2videodec: Keep part of the input buffer 2016-06-07 17:03:40 -04:00
gstv4l2videodec.h v4l2: Add initial support for alignment and cropping 2014-05-08 15:56:35 -04:00
gstv4l2vidorient.c v4l2: Use a copy of videodev2.h header 2014-03-15 13:54:47 +01:00
gstv4l2vidorient.h Fix FSF address 2012-11-04 00:07:18 +00:00
Makefile.am Rename GstDeviceMonitor to GstDeviceProvider 2014-06-26 14:57:36 -04:00
meson.build Add support for Meson as alternative/parallel build system 2016-08-20 11:21:12 +01:00
README Fix level for multi-channel case. 2007-02-22 14:35:28 +00:00
tuner.c v4l2: Use G_DEFINE_ macros for added thread safety 2013-08-19 12:48:35 -04:00
tuner.h v4l2: remove unused enumtypes and use generic marshaller 2013-08-04 11:03:49 +01:00
tunerchannel.c v4l2: Use G_DEFINE_ macros for added thread safety 2013-08-19 12:48:35 -04:00
tunerchannel.h Fix FSF address 2012-11-04 00:07:18 +00:00
tunernorm.c v4l2: Use G_DEFINE_ macros for added thread safety 2013-08-19 12:48:35 -04:00
tunernorm.h Fix FSF address 2012-11-04 00:07:18 +00:00
v4l2-utils.c v4l2: consistently check #ifdef HAVE_GUDEV instead of #if 2016-08-18 20:20:20 +01:00
v4l2-utils.h v4l2-util: Introduce GstV4l2Error 2016-06-07 17:02:34 -04:00
v4l2_calls.c v4l2: Also copy device_caps in gst_v4l2_dup 2016-07-10 21:37:24 -04:00
v4l2_calls.h v4l2: Remove last include to linux/videodev2.h 2014-11-30 17:55:19 -05:00

README 

v4l2 plugins
============

The idea is a bit the same as the idea for the v4l1 plugins. We want
one generic v4l2element, and a few child objects (probably only two:
v4l2src and v4l2sink):

                /-------- v4l2src
v4l2element ---=
                \-------- v4l2sink

Both v4l2src and v4l2sink have a uncompressed and a compressed
recording-/playback-mode. Since this is all part of v4l2, the 'client'
of these elements, i.e. an application using v4l2src/v4l2sink, will
hardly notice this. All capsnego stuff is done inside, and the plugin
knows which formats are compressed and which are not.

Please note that the v4l1 and the v4l2 plugins are *not* compatible
concerning properties. Naming has been kept the same where possible,
but in some cases, properties had to be removed or added to make
full use of v4l2.

V4L2 API: http://linux.bytesex.org/v4l2/.
          http://v4l2spec.bytesex.org/
          /usr/include/linux/videodev2.h or

Kernel patches available from
          http://dl.bytesex.org/patches/.

Articles:
          http://lwn.net/Articles/203924/