Bug 706628 – v4l2src hangs opening device

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Bug 706628 - v4l2src hangs opening device


Summary:	v4l2src hangs opening device


Status:	RESOLVED OBSOLETE

Product:	GStreamer
Classification:	Platform
Component:	gst-plugins-good
Version:	1.1.3
Hardware:	Other Linux

Importance:	Normal major
Target Milestone:	git master
Assigned To:	GStreamer Maintainers
QA Contact:	GStreamer Maintainers

URL:
Whiteboard:

Depends on:
Blocks:

Reported:	2013-08-23 02:00 UTC by Steve Roskowski
Modified:	2014-08-27 18:07 UTC

See Also:
GNOME target:	---
GNOME version:	---

Attachments
stab in the dark (851 bytes, patch) 2014-01-14 14:50 UTC, Vincent Penquerc'h	none	Details \| Review
maybe fix (855 bytes, patch) 2014-01-14 14:53 UTC, Vincent Penquerc'h	committed	Details \| Review

Description Steve Roskowski 2013-08-23 02:00:25 UTC

I have 2 versions of gstreamer installed on my centos 6 box. xx.10, the default install works fine for gst-inspect v4l2src.

I have done a full download of the 1.1.3 release (gstreamer,base,good...) sources and done a source build and installed into an independent directory. Everything else works fine, but v4l2src hangs.  gst-inspect v4l2src prints everything up to device name, then hangs.

********************************************0.10...
/usr/bin/gst-inspect-0.10 v4l2src
Factory Details:
  Long name:	Video (video4linux2) Source
  Class:	Source/Video
  Description:	Reads frames from a video4linux2 (BT8x8) device
  Author(s):	Edgard Lima <edgard.lima@indt.org.br>, Stefan Kost <ensonic@users.sf.net>
  Rank:		primary (256)

Plugin Details:
  Name:			video4linux2
  Description:		elements for Video 4 Linux
  Filename:		/usr/lib64/gstreamer-0.10/libgstvideo4linux2.so
  Version:		0.10.23
  License:		LGPL
  Source module:	gst-plugins-good
  Binary package:	Fedora gstreamer-plugins-good package
  Origin URL:		http://download.fedora.redhat.com/fedora

GObject
 +----GstObject
       +----GstElement
             +----GstBaseSrc
                   +----GstPushSrc
                         +----GstV4l2Src

Implemented Interfaces:
  GstURIHandler
  GstImplementsInterface
  GstTuner
  GstColorBalance
  GstVideoOrientation
  GstPropertyProbe

Pad Templates:
  SRC template: 'src'
    Availability: Always
    Capabilities:
      video/x-raw-rgb
                    bpp: 8
                  depth: 8
               red_mask: 224
             green_mask: 28
              blue_mask: 3
             endianness: 1234
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-rgb
                    bpp: 16
                  depth: 15
               red_mask: 31744
             green_mask: 992
              blue_mask: 31
             endianness: 1234
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-rgb
                    bpp: 16
                  depth: 16
               red_mask: 63488
             green_mask: 2016
              blue_mask: 31
             endianness: 1234
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-rgb
                    bpp: 16
                  depth: 15
               red_mask: 31744
             green_mask: 992
              blue_mask: 31
             endianness: 4321
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-rgb
                    bpp: 16
                  depth: 16
               red_mask: 63488
             green_mask: 2016
              blue_mask: 31
             endianness: 4321
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-rgb
                    bpp: 24
                  depth: 24
               red_mask: 255
             green_mask: 65280
              blue_mask: 16711680
             endianness: 4321
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-rgb
                    bpp: 24
                  depth: 24
               red_mask: 16711680
             green_mask: 65280
              blue_mask: 255
             endianness: 4321
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-rgb
                    bpp: 32
                  depth: 32
               red_mask: 255
             green_mask: 65280
              blue_mask: 16711680
             endianness: 4321
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-rgb
                    bpp: 32
                  depth: 32
               red_mask: -16777216
             green_mask: 16711680
              blue_mask: 65280
             endianness: 4321
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-gray
                    bpp: 8
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: YVU9
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: YV12
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: YUY2
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: UYVY
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: Y42B
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: Y41B
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: Y41P
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: NV12
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: NV21
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: YUV9
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: I420
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-bayer
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      image/jpeg
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      image/jpeg
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-dv
           systemstream: true
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/mpegts
      video/x-sonix
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-pwc1
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-pwc2
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw-yuv
                 format: YVYU
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]


Element Flags:
  no flags set

Element Implementation:
  Has change_state() function: 0x7f05632f21a0
  Has custom save_thyself() function: gst_element_save_thyself
  Has custom restore_thyself() function: gst_element_restore_thyself

Element has no clocking capabilities.
Element has no indexing capabilities.

URI handling capabilities:
  Element can act as source.
  Supported URI protocols:
    v4l2

Pads:
  SRC: 'src'
    Implementation:
      Has getrangefunc(): gst_base_src_pad_get_range
      Has custom eventfunc(): gst_base_src_event_handler
      Has custom queryfunc(): gst_base_src_query
    Pad Template: 'src'

Element Properties:
  name                : The name of the object
                        flags: readable, writable
                        String. Default: null Current: "v4l2src0"
  blocksize           : Size in bytes to read per buffer (-1 = default)
                        flags: readable, writable
                        Unsigned Long. Range: 0 - 18446744073709551615 Default: 4096 Current: 4096
  num-buffers         : Number of buffers to output before sending EOS (-1 = unlimited)
                        flags: readable, writable
                        Integer. Range: -1 - 2147483647 Default: -1 Current: -1
  typefind            : Run typefind before negotiating
                        flags: readable, writable
                        Boolean. Default: false Current: false
  do-timestamp        : Apply current stream time to buffers
                        flags: readable, writable
                        Boolean. Default: false Current: false
  device              : Device location
                        flags: readable, writable
                        String. Default: "/dev/video0" Current: "/dev/video0"
  device-name         : Name of the device
                        flags: readable
                        String. Default: null Current: "BT878 video (Geovision GV-800(S"
  device-fd           : File descriptor of the device
                        flags: readable
                        Integer. Range: -1 - 2147483647 Default: -1 Current: -1
  flags               : Device type flags
                        flags: readable
                        Flags "GstV4l2DeviceTypeFlags" Default: 0x00000000, "(none)" Current: 0x00000000, "(none)"
                           (0x00000001): capture          - Device supports video capture
                           (0x00000002): output           - Device supports video playback
                           (0x00000004): overlay          - Device supports video overlay
                           (0x00000010): vbi-capture      - Device supports the VBI capture
                           (0x00000020): vbi-output       - Device supports the VBI output
                           (0x00010000): tuner            - Device has a tuner or modulator
                           (0x00020000): audio            - Device has audio inputs or outputs
  queue-size          : Number of buffers to be enqueud in the driver in streaming mode
                        flags: readable, writable
                        Unsigned Integer. Range: 1 - 16 Default: 2 Current: 2
  always-copy         : If the buffer will or not be used directly from mmap
                        flags: readable, writable
                        Boolean. Default: true Current: true


****************************** 1.1.3 version
/opt/een/bin/gst-inspect-1.0 v4l2src
Factory Details:
  Rank                     primary (256)
  Long-name                Video (video4linux2) Source
  Klass                    Source/Video
  Description              Reads frames from a Video4Linux2 device
  Author                   Edgard Lima <edgard.lima@indt.org.br>, Stefan Kost <ensonic@users.sf.net>

Plugin Details:
  Name                     video4linux2
  Description              elements for Video 4 Linux
  Filename                 /opt/een/lib/gstreamer-1.0/libgstvideo4linux2.so
  Version                  1.1.3
  License                  LGPL
  Source module            gst-plugins-good
  Source release date      2013-07-29
  Binary package           GStreamer Good Plug-ins source release
  Origin URL               Unknown package origin

GObject
 +----GInitiallyUnowned
       +----GstObject
             +----GstElement
                   +----GstBaseSrc
                         +----GstPushSrc
                               +----GstV4l2Src

Implemented Interfaces:
  GstURIHandler
  GstTuner
  GstColorBalance
  GstVideoOrientation

Pad Templates:
  SRC template: 'src'
    Availability: Always
    Capabilities:
      video/x-raw
                 format: RGB15
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: RGB16
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: BGR
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: RGB
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: BGRx
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: RGBx
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: GRAY8
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: YVU9
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: YV12
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: YUY2
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: UYVY
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: Y42B
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: Y41B
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: NV12
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: NV21
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: YUV9
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: I420
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-bayer
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      image/jpeg
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      image/jpeg
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      image/jpeg
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-dv
           systemstream: true
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/mpegts
      video/x-sonix
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-pwc1
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-pwc2
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]
      video/x-raw
                 format: YVYU
                  width: [ 1, 32768 ]
                 height: [ 1, 32768 ]
              framerate: [ 0/1, 100/1 ]


Element Flags:
  no flags set

Element Implementation:
  Has change_state() function: 0x7f087407f5a0

Element has no clocking capabilities.
Element has no indexing capabilities.

URI handling capabilities:
  Element can act as source.
  Supported URI protocols:
    v4l2

Pads:
  SRC: 'src'
    Implementation:
      Has getrangefunc(): gst_base_src_getrange
      Has custom eventfunc(): gst_base_src_event
      Has custom queryfunc(): gst_base_src_query
      Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
    Pad Template: 'src'

Element Properties:
  name                : The name of the object
                        flags: readable, writable
                        String. Default: "v4l2src0"
  parent              : The parent of the object
                        flags: readable, writable
                        Object of type "GstObject"
  blocksize           : Size in bytes to read per buffer (-1 = default)
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 4294967295 Default: 4096 
  num-buffers         : Number of buffers to output before sending EOS (-1 = unlimited)
                        flags: readable, writable
                        Integer. Range: -1 - 2147483647 Default: -1 
  typefind            : Run typefind before negotiating
                        flags: readable, writable
                        Boolean. Default: false
  do-timestamp        : Apply current stream time to buffers
                        flags: readable, writable
                        Boolean. Default: false
  device              : Device location
                        flags: readable, writable
                        String. Default: "/dev/video0"
  device-name         : Name of the device


and hangs there forever.

Comment 1 Tim-Philipp Müller 2013-08-23 07:52:52 UTC

Could you run it in gdb and get a stack trace where it hangs? (threads apply all bt)

Comment 2 Steve Roskowski 2013-08-23 14:36:48 UTC

(In reply to comment #1)
> Could you run it in gdb and get a stack trace where it hangs? (threads apply
> all bt)

(gdb) info threads
* 1 Thread 0x7ffff7ce6700 (LWP 18059)  0x0000003834ae52d9 in syscall ()
   from /lib64/libc.so.6
(gdb) backtrace

+ Trace 232415

#0 syscall
from /lib64/libc.so.6
#1 ??
from /usr/lib64/libv4lconvert.so.0
#2 v4l2_ioctl
from /usr/lib64/libv4l2.so.0
#3 gst_v4l2_fill_lists
at v4l2_calls.c line 264
#4 gst_v4l2_open
at v4l2_calls.c line 536
#5 gst_v4l2_object_get_property_helper
at gstv4l2object.c line 748
#6 gst_v4l2src_get_property
at gstv4l2src.c line 266
#7 object_get_property
at gobject.c line 1294
#8 g_object_get_property
at gobject.c line 2228
#9 print_element_properties_info
at gst-inspect.c line 343
#10 print_element_info
at gst-inspect.c line 1368
#11 main
at gst-inspect.c line 1664

Comment 3 Sebastian Dröge (slomo) 2013-08-26 07:17:19 UTC

This sounds like a bug in libv4l2 or the driver. Does this also happen if you compile gst-plugins-good without libv4l2?

Comment 4 Steve Roskowski 2013-08-28 01:36:28 UTC

it is using the same v4l2 library as the 0.10 release, and the same drivers, so I am not sure how that could really be the case.

I erased the libv4l-devel package and got the same results. 0.10 is completely happy 1.1.3 hangs.

Comment 5 Steve Roskowski 2013-08-28 03:10:24 UTC

some more observations

this is actually still running - the debug level five output dumped 25794769731 bytes of data before I got bored, and it was still running.

The v4l2src is walking through a 32 bit value, one control at a time.  Without debugging it is spinning at 100% for 10 minutes now.

this clearly a bug.  The get list loop is broken...

This happens whether I am using libv4l2 or not and happens with both the 0.6 version and the 1.0 version of the v4l library.

steve

tail of the dump file...
0:24:58.384071989 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:279:gst_v4l2_fill_lists:<v4l2src0> skipping control 00493f16
0:24:58.384080100 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:262:gst_v4l2_fill_lists:<v4l2src0> checking control 00493f17
0:24:58.384088856 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:279:gst_v4l2_fill_lists:<v4l2src0> skipping control 00493f17
0:24:58.384096971 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:262:gst_v4l2_fill_lists:<v4l2src0> checking control 00493f18
0:24:58.384105701 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:279:gst_v4l2_fill_lists:<v4l2src0> skipping control 00493f18
0:24:58.384113832 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:262:gst_v4l2_fill_lists:<v4l2src0> checking control 00493f19
0:24:58.384127879 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:279:gst_v4l2_fill_lists:<v4l2src0> skipping control 00493f19
0:24:58.384136467 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:262:gst_v4l2_fill_lists:<v4l2src0> checking control 00493f1a
0:24:58.384151192 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:279:gst_v4l2_fill_lists:<v4l2src0> skipping control 00493f1a
0:24:58.384159774 20624      0x25b6a30 DEBUG                   v4l2 v4l2_calls.c:262:gst_v4l2_fill_lists:<v4l2src0> checking control 00493f1b

Comment 6 Steve Roskowski 2013-08-28 14:31:41 UTC

Final piece of follow up.  I let the gst-inspect v4l2src run overnight - after 300+ minutes of cpu usage, still running at 100% of a thread I gave up on 1.1.3.

Removed the 1.1.3 build, replaced it with a source build of 1.0.9.  v4l2src works fine.  So this is clearly something in the list loop.

steve

Comment 7 Sebastian Dröge (slomo) 2013-08-29 09:51:35 UTC

Indeed, can you check which part of that loop is used? Is V4L2_CTRL_FLAG_NEXT_CTRL defined for you? Also which of the exit cases should it take but doesn't? Should be relatively easy to step through that in gdb to see where it is supposed to exit the loop but does not.

Comment 8 Vincent Penquerc'h 2014-01-14 14:50:27 UTC

Created attachment 266266 [details] [review]
stab in the dark

If you could also test this and see if that fixes it ?

Comment 9 Vincent Penquerc'h 2014-01-14 14:53:40 UTC

Created attachment 266267 [details] [review]
maybe fix

Off by one. Updated.

Comment 10 Sebastian Dröge (slomo) 2014-01-14 15:22:55 UTC

Comment on attachment 266267 [details] [review]
maybe fix

Makes sense obviously, even if it does not fix this bug

Comment 11 Mark Howell 2014-03-21 23:31:04 UTC

I've been seeing the same behavior running my build from the 1.2.3 tag on Precise with a Sensoray 611 (Bt8xx chipset).

Vincent's patch attached to this bug fixes that for me. I can now get v4l2src to play from that device.

Comment 12 Nicolas Dufresne (ndufresne) 2014-03-29 21:10:26 UTC

Comment on attachment 266267 [details] [review]
maybe fix

I didn't reference this bug, as it's not fixing it.

commit 4d0e1a4536e010ecfb48d40fcde65246d655c84b
Author: Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
Date:   Tue Jan 14 14:48:42 2014 +0000

    v4l2: attempt to fix infinite (for small version of infinite) loop

Comment 13 Mark Howell 2014-03-30 17:29:08 UTC

(In reply to comment #12)

Would you consider pushing Vincent's fix to 1.2 branch as well? Would like it in the next 1.2 release (if there is one, I don't know the plan).

Comment 14 Nicolas Dufresne (ndufresne) 2014-03-30 20:07:03 UTC

(In reply to comment #13)
> (In reply to comment #12)
> 
> Would you consider pushing Vincent's fix to 1.2 branch as well? Would like it
> in the next 1.2 release (if there is one, I don't know the plan).

Right, it didn't fix this particular bug but fixes a bug you have. I'll ref this bug this time, so we have some tracking.

Comment 15 Nicolas Dufresne (ndufresne) 2014-03-31 02:39:29 UTC

Done.
commit 00067d4749cbe36a2536e6cd42ad1008cbf6a499
Author: Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
Date:   Tue Jan 14 14:48:42 2014 +0000

    v4l2: attempt to fix infinite (for small version of infinite) loop
    
    Related to https://bugzilla.gnome.org/show_bug.cgi?id=706628

Comment 16 Nicolas Dufresne (ndufresne) 2014-05-13 20:21:38 UTC

Is this still an issue ?

Comment 17 Nicolas Dufresne (ndufresne) 2014-07-03 01:41:45 UTC

Ping ?

Comment 18 Nicolas Dufresne (ndufresne) 2014-08-27 18:07:08 UTC

I think this is obsolete now, a lot have been changed and address since this bug was reported.