Date: Wed, 14 Aug 2019 16:19:10 +0200 From: Frederic Chardon <chardon.frederic@gmail.com> To: Jan Beich <jbeich@freebsd.org> Cc: chromium@freebsd.org Subject: Re: No webcam in chrome (works in firefox) Message-ID: <CAMODbknKXDHXvZrJA4VUjpNZ%2BcvKDnA7qddL9FGWtsd1hD4LvQ@mail.gmail.com> In-Reply-To: <CAMODbkn=Vukqb9sDY=uB_kpc_f3Gs4NwE0ZfUVKo5VjURuPPLQ@mail.gmail.com> References: <CAMODbkmYqnhq8cyHukBmttAEkrPE6xcVPrVgzgUN34BRGgMLqQ@mail.gmail.com> <o90z-tsh2-wny@FreeBSD.org> <CAMODbkn=Vukqb9sDY=uB_kpc_f3Gs4NwE0ZfUVKo5VjURuPPLQ@mail.gmail.com>
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Le ven. 9 ao=C3=BBt 2019 =C3=A0 06:26, Frederic Chardon
<chardon.frederic@gmail.com> a =C3=A9crit :
>
> Le jeu. 8 ao=C3=BBt 2019 =C3=A0 20:36, Jan Beich <jbeich@freebsd.org> a =
=C3=A9crit :
> >
> > (redirecting to a better list)
> >
> > Frederic Chardon <chardon.frederic@gmail.com> writes:
> >
> > > Hi
> > >
> > > I can't make chrome to recognize my webcam. webcamd is running, pwcvi=
ew,
> > > firefox or mpv all works
> > > Ports are at revision 507476 and base at 350255 (amd64).
> > >
> > > There is no camera listed in chrome://media-internals and typing
> > > "navigator.mediaDevices.getUserMedia({video:true});" in the javascrip=
t
> > > console throw a NotFoundError.
> > >
> > > ktrace shows that open() succeed
> > > 83513 chrome CALL openat(AT_FDCWD,0x81812d101,0<O_RDONLY>)
> > > 83513 chrome NAMI "/dev/video0"
> > > 83513 chrome RET openat 159/0x9f
> > > 83513 chrome CALL ioctl(0x9f,0x40685600,0x7fffde9f2aa8)
> >
> > 0x40685600 is probably VIDIOC_QUERYCAP, used by Chromium in a number of=
places.
> > https://cs.chromium.org/search/?q=3DVIDIOC_QUERYCAP
> >
> > Firefox also uses VIDIOC_QUERYCAP but doesn't seem to check capabilitie=
s.
> > https://searchfox.org/mozilla-central/search?q=3DVIDIOC_QUERYCAP
> >
> > > 83513 chrome RET ioctl 0
> > > 83513 chrome CALL close(0x9f)
> > > 83513 chrome RET close 0
> > >
> > > So this is rather not a permission issue (and anyway, the other progr=
ams
> > > all work)
> >
> > Can you show output from the following? I don't have a camera, so no
> > clue which capabilities Chromium wants.
> >
> > $ cat a.c
> > #include <linux/videodev2.h>
> > #include <err.h>
> > #include <fcntl.h>
> >
> > int main(void)
> > {
> > int fd;
> > if ((fd =3D open("/dev/video0", O_RDWR)) =3D=3D -1)
> > err(1, "failed to open /dev/video0");
> >
> > struct v4l2_capability cap =3D {};
> > if (ioctl(fd, VIDIOC_QUERYCAP, &cap) =3D=3D -1)
> > err(1, "VIDIOC_QUERYCAP failed");
> >
> > warnx("/dev/video0 capabilities: %#x", cap.capabilities);
> > if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE))
> > warnx("V4L2_CAP_VIDEO_CAPTURE is missing");
> > if (cap.capabilities & V4L2_CAP_VIDEO_OUTPUT)
> > warnx("V4L2_CAP_VIDEO_OUTPUT is present, not allowed for delega=
tion");
> > if (!(cap.capabilities & V4L2_CAP_STREAMING))
> > warnx("V4L2_CAP_STREAMING is missing");
> > if (!(cap.capabilities & V4L2_CAP_VIDEO_M2M_MPLANE))
> > warnx("V4L2_CAP_VIDEO_M2M_MPLANE is missing, required for strea=
ming");
> >
> > return 0;
> > }
> >
> > $ pkg install v4l_compat
> > $ cc a.c -isystem/usr/local/include
> > $ ./a.out
> >
>
> a.out: /dev/video0 capabilities: 0x84a00001
> a.out: V4L2_CAP_VIDEO_M2M_MPLANE is missing, required for streaming
>
> >
> > > Is it a known issue? Or am I missing something?
> > > Thanks
> >
> > Did previous www/chromium major versions work fine?
>
> No idea, I only recently (~2 weeks) started needing a webcam.
>
> Thanks!
I updated to latest version, no change. Can someone confirm that
webcam works for them under chromium?
Thanks
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