From: "Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
To: Helen Koike <helen.koike@collabora.com>, linux-media@vger.kernel.org
Cc: libcamera-devel@lists.libcamera.org,
"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
Subject: [PATCH 0/3] vimc: Allow multiple capture devices to use the same sensor
Date: Sat, 18 May 2019 03:07:41 +0200 [thread overview]
Message-ID: <20190518010744.15195-1-niklas.soderlund+renesas@ragnatech.se> (raw)
Hi,
This series adds support for two (or more) capture devices to be
connected to the same senors and run simultaneously. Each capture device
can be started and stopped independent of each other.
Patch 1/3 and 2/3 deals with solving the issues that arises once two
capture devices can be part of the same pipeline. While 3/3 allows for
two capture devices to be part of the same pipeline and thus allows for
simultaneously use.
The series is based on the latest media-tree and it functionality can be
demonstrated with the following test.
>>> begin test <<<
mdev=/dev/media0
media-ctl -d $mdev -l "'Debayer A':1 -> 'Scaler':0 [1]"
media-ctl -d $mdev -l "'Debayer B':1 -> 'Scaler':0 [0]"
media-ctl -d $mdev -V "'Debayer A':0 [fmt:RGB888_1X24/640x480 field:none]"
media-ctl -d /dev/media0 -V "'Sensor A':0 [fmt:SRGGB8_1X8/640x480 field:none]"
yavta -f RGB24 -s 1920x1440 --field none /dev/video2
yavta -f SRGGB8 -s 640x480 --field none /dev/video0
yavta -f RGB24 -s 1920x1440 --field none /dev/video2 --capture=100 &
yavta -f SRGGB8 -s 640x480 --field none /dev/video0 --capture=100
wait
>>> end test <<<
In addition to testing with this test the series is tested with multiple
qv4l2 instances controlling different capture devices connected to the
same sensor.
Niklas Söderlund (3):
vimc: Add usage count to subdevices
vimc: Serialize vimc_streamer_s_stream()
vimc: Join pipeline if one already exists
drivers/media/platform/vimc/vimc-capture.c | 35 ++++++++++++++++++++-
drivers/media/platform/vimc/vimc-debayer.c | 8 +++++
drivers/media/platform/vimc/vimc-scaler.c | 8 +++++
drivers/media/platform/vimc/vimc-sensor.c | 7 +++++
drivers/media/platform/vimc/vimc-streamer.c | 23 +++++++++-----
5 files changed, 73 insertions(+), 8 deletions(-)
--
2.21.0
next reply other threads:[~2019-05-18 1:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-18 1:07 Niklas Söderlund [this message]
2019-05-18 1:07 ` [PATCH 1/3] vimc: Add usage count to subdevices Niklas Söderlund
2020-03-16 19:40 ` Helen Koike
2020-03-16 20:32 ` Niklas Söderlund
2019-05-18 1:07 ` [PATCH 2/3] vimc: Serialize vimc_streamer_s_stream() Niklas Söderlund
2019-05-18 1:07 ` [PATCH 3/3] vimc: Join pipeline if one already exists Niklas Söderlund
2019-07-09 18:24 ` Helen Koike
2019-07-11 4:35 ` Niklas Söderlund
2019-10-23 7:01 ` [PATCH 0/3] vimc: Allow multiple capture devices to use the same sensor Hans Verkuil
2019-10-23 10:22 ` Niklas Söderlund
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