libv4l 0.6.5

libv4l is a collection of libraries which adds a thin abstraction layer on<br />top of video4linux2 devices. Its purpose is to make writing an application that supports a wide variety of devices easier, without needing a special effort for every device.<br />All libv4l components are licensed under the GNU Library General Publishing<br />License version 2 or (at your option) any later version.<br /><br />libv4l consists of 3 different libraries:<br /><br />libv4lconvert<br />libv4lconvert offers functions to convert from any (known) pixelformat<br />to V4l2_PIX_FMT_BGR24 or V4l2_PIX_FMT_YUV420.<br />Currently the following source formats are supported:<br />jpeg, mjpeg, bayer (all 4 variants: bggr, rggb, gbrg, grbg),<br />spca501 (chip specific yuv 420 with interlaced components),<br />spca561 (chip specific compressed gbrg bayer)<br />For more details on the v4lconvert_ functions see libv4lconvert.h.<br /><br />libv4l1<br />This offers functions like v4l1_open, v4l1_ioctl, etc. which can by used to<br />quickly make v4l1 applications work with v4l2 devices. These functions work<br />exactly like the normal open/close/etc, except that libv4l1 does full emulation<br />of the v4l1 api on top of v4l2 drivers, in case of v4l1 drivers it will just<br />pass calls through. For more details on the v4l1_ functions see libv4l1.h .<br /><br />libv4l2<br />This offers functions like v4l2_open, v4l2_ioctl, etc. which can by used to<br />quickly make v4l2 applications work with v4l2 devices with weird formats.<br />libv4l2 mostly passes calls directly through to the v4l2 driver. When the<br />app does a TRY_FMT / S_FMT with a not supported format libv4l2 will get in<br />the middle and emulate the format (if an app wants to know which formats the<br />hardware can _really_ do it should use ENUM_FMT, not randomly try a bunch of<br />S_FMT's). For more details on the v4l2_ functions see libv4l2.h .

Requirements:	No special requirements
Platforms:	*nix, Linux
Keyword:	Applications,  Calls,  Details,  Devices,  Drivers,  Format,  Formats,  Functions,  Ioctl,  Libv,  Libv Lconverthlibv,  Offers,  Open,  Specific,  Toquickly,  V4l1
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