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Diffstat (limited to 'v4l2-apps/libv4l/README')
| -rw-r--r-- | v4l2-apps/libv4l/README | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/v4l2-apps/libv4l/README b/v4l2-apps/libv4l/README index 3a2059224..481d5b92e 100644 --- a/v4l2-apps/libv4l/README +++ b/v4l2-apps/libv4l/README @@ -15,14 +15,26 @@ libv4l consists of 3 different libraries: libv4lconvert ------------- -libv4lconvert offers functions to convert from any (known) pixelformat -to V4l2_PIX_FMT_BGR24 or V4l2_PIX_FMT_YUV420. - -Currently the following source formats are supported: -jpeg, mjpeg, bayer (all 4 variants: bggr, rggb, gbrg, grbg), -spca501 (chip specific yuv 420 with interlaced components), -spca561 (chip specific compressed gbrg bayer) -For more details on the v4lconvert_ functions see libv4lconvert.h . +libv4lconvert started as a library to convert from any (known) pixelformat to +V4l2_PIX_FMT_BGR24, RGB24, YUV420 or YVU420. + +The list of know source formats is large and continually growing, so instead +of keeping an (almost always outdated) list here in the README, I refer you +to the source, see the list of defines at the top of +libv4lconvert/libv4lconvert.c for the full list. +For more details on the v4lconvert_ functions see libv4lconvert.h. + +Later on libv4lconvert was expanded to also be able to do various video +processing functions improve webcam video quality on a software basis. So +the name no longer 100% covers the functionality. The video processing is +split in to 2 parts, libv4lconvert/control and libv4lconvert/processing. + +The control part is used to offer video controls which can be used to control +the video processing functions made available by libv4lconvert/processing. +These controls are stored application wide (untill reboot) by using a +persistent shared memory object. + +libv4lconvert/processing offers the actual video processing functionality. libv4l1 |