V4L2-library August 2008

v4l2-library@linuxtv.org

4 participants
4 discussions

Announcing libv4l 0.4.1
by Hans de Goede 26 Aug '08

26 Aug '08

Hi All, Some assorted fixes, and support for Pixart cams JPEG's (which are non standard JPEG's) together with some gspca kernel changes this means that we now have working pac7302 and pac7311 webcams! Go grab the new release here http://people.atrpms.net/~hdegoede/libv4l-0.4.1.tar.gz Full list of changes: libv4l-0.4.1 ------------ * When the driver supports read() and we are not converting let the driver handle read() instead of emulating it with mmap mode * Fix errors and warnings when compiling with ICC (Gregor Jasny) * Add support to libv4lconvert for rotating images 90 (for Pixart 7302 cams) or 180 (Philips SPC200NC / Philips SPC300NC) degrees * Add support for Pixart custom JPEG format * Hide non public symbols (Gregor Jasny) * Fix and enable x86_64 asm jpeg decompress helper functions (Gregor Jasny) Regards, Hans

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MS VX-3000 does not quite work
by Max Krasnyansky 09 Aug '08

09 Aug '08

VX-3000 is listed as supported by the kernel driver. But it looks like I need libv4l to properly support its video format. So I tried v4l2convert with Skype and the picture is very very dark. I mean I can see that it's kind of working but only very bright objects are visible. Tuning brightness controls makes no difference. I tried Ekiga too and got similar results. Any suggestions ? I'm using 0.4.0 version btw. Thanx Max

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Announcing libv4l 0.3.8
by Hans de Goede 03 Aug '08

03 Aug '08

Hi All, I've installed a pci bttv tv card in my machine to test libv4l xawtv patches and I've found that libv4l was being to strict with the circumstances under which it allowed changing the fmt and changing between read / mmap mode. This new version fixes this: http://people.atrpms.net/~hdegoede/libv4l-0.4.0.tar.gz Full list of changes: libv4l-0.4.0 ------------ * Be more relaxed in our checks for mixing read and mmap access, we were being more strict in this then certain kernel drivers (bttv) making xawtv unhappy * With some drivers the buffers must be mapped before queuing, so when converting map the (real) buffers before calling the qbuf ioctl * Add support for conversion to RGB24 (before we only supported BGR24) based on a patch by Jean-Francois Moine * When the hardware supports a format natively prefer using the native version over converting from another supported format * Various Makefile and pkgconfig file improvements by Gregor Jasny (Debian) * Drop the appl-patches dir, all application patches are now available and tracked here: http://linuxtv.org/v4lwiki/index.php/Libv4l_Progress Regards, Hans

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Announcing libv4l 0.3.8
by Hans de Goede 03 Aug '08

03 Aug '08

Hi All, Here is release 0.3.8: http://people.atrpms.net/~hdegoede/libv4l-0.3.8.tar.gz This release has the following changes (some small tweaks left and right for more to the spec behavior, none of this fixes any known bugs). libv4l-0.3.8 ------------ * work around wrong REQUEST_BUFFERS ioctl return code from certain drivers * add pkg-config (.pc) files for easier detection if libv4l is available * check capabilities for streaming, if the driver cannot do streaming don't insert ourselves between the application and the driver * intercept get capabilites and report read capability (which we always offer) * query buffer: indicate the mapping state of our (fake) buffer in the flags Regards, Hans

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V4L2-library August 2008