Oops, forgot to mention that the git tree containing these patches can be found here: http://git.linuxtv.org/hverkuil/media_tree.git/shortlog/refs/heads/propapi6 Regards, Hans On 01/06/2014 03:20 PM, Hans Verkuil wrote: > This patch series adds support for properties, matrices and configuration > stores to the control framework. > > See this RFCv2 for a more detailed discussion: > > http://permalink.gmane.org/gmane.linux.drivers.video-input-infrastructure/71822 > > Changes since that RFCv2 are: > > - I dropped the 'property' bit in the control ID, instead a new flag is > added: V4L2_CTRL_FLAG_PROPERTY. > - A V4L2_CTRL_FLAG_IS_PTR flag is added to simplify applications: if set, then > applications need to use the 'p' field instead of 'val' or 'val64'. This can > be deduced from various other fields as well, but that leads to ugly code. > This flag is cheap to set and very helpful in applications. > - Matrix types have been dropped. If cols or rows are > 1, then you have a > matrix, so there is no need for specific matrix types. > - As a result it is no longer possible to set just a sub-rectangle of a > matrix. It is however possible to just set the first X elements of > a matrix/array. It became too complex to deal with the sub-rectangle, > both in the framework, for drivers and for applications, and there are > not enough benefits to warrant that effort. > > Other than those changes this patch series implements all the ideas described > in RFCv2. > > The first 21 patches are pretty definitive and the only thing missing are > the DocBook patches and a v4l2-controls.txt patch. > > Before I write those I would like to get feedback for this API enhancement. > The actual API changes are surprisingly small, and most of the work done in > the patches has more to do with data structure changes needed to simplify > handling the more complex control types than with actual new code. > > Patch 22 adds a new event that can deal with the new 64-bit ranges and that > adds a config_store field. However, I am not yet convinced that this is > really needed. Feedback would be welcome. > > Patches 23-27 add test code for vivi to test matrices and to test the new > selection properties. This code needs more work, particularly with regards > to naming. > > A working v4l2-ctl that can handle the new stuff is available here: > > http://git.linuxtv.org/hverkuil/v4l-utils.git/shortlog/refs/heads/propapi > > Regards, > > Hans > > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
