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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/userspace-api/media/drivers/meye-uapi.rst | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/userspace-api/media/drivers/meye-uapi.rst | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/drivers/meye-uapi.rst b/Documentation/userspace-api/media/drivers/meye-uapi.rst new file mode 100644 index 000000000..66b1c142f --- /dev/null +++ b/Documentation/userspace-api/media/drivers/meye-uapi.rst @@ -0,0 +1,53 @@ +.. SPDX-License-Identifier: GPL-2.0 + +.. include:: <isonum.txt> + +Vaio Picturebook Motion Eye Camera Driver +========================================= + +Copyright |copy| 2001-2004 Stelian Pop <stelian@popies.net> + +Copyright |copy| 2001-2002 AlcĂ´ve <www.alcove.com> + +Copyright |copy| 2000 Andrew Tridgell <tridge@samba.org> + +Private API +----------- + +The driver supports frame grabbing with the video4linux API, +so all video4linux tools (like xawtv) should work with this driver. + +Besides the video4linux interface, the driver has a private interface +for accessing the Motion Eye extended parameters (camera sharpness, +agc, video framerate), the snapshot and the MJPEG capture facilities. + +This interface consists of several ioctls (prototypes and structures +can be found in include/linux/meye.h): + +MEYEIOC_G_PARAMS and MEYEIOC_S_PARAMS + Get and set the extended parameters of the motion eye camera. + The user should always query the current parameters with + MEYEIOC_G_PARAMS, change what he likes and then issue the + MEYEIOC_S_PARAMS call (checking for -EINVAL). The extended + parameters are described by the meye_params structure. + + +MEYEIOC_QBUF_CAPT + Queue a buffer for capture (the buffers must have been + obtained with a VIDIOCGMBUF call and mmap'ed by the + application). The argument to MEYEIOC_QBUF_CAPT is the + buffer number to queue (or -1 to end capture). The first + call to MEYEIOC_QBUF_CAPT starts the streaming capture. + +MEYEIOC_SYNC + Takes as an argument the buffer number you want to sync. + This ioctl blocks until the buffer is filled and ready + for the application to use. It returns the buffer size. + +MEYEIOC_STILLCAPT and MEYEIOC_STILLJCAPT + Takes a snapshot in an uncompressed or compressed jpeg format. + This ioctl blocks until the snapshot is done and returns (for + jpeg snapshot) the size of the image. The image data is + available from the first mmap'ed buffer. + +Look at the 'motioneye' application code for an actual example. |