This patch series adds support for complex controls (aka 'Properties') to the control framework. It is the first part of a larger patch series that adds support for configuration stores, motion detection matrix controls and support for 'Multiple Selections'. This patch series is based on this RFC: http://permalink.gmane.org/gmane.linux.drivers.video-input-infrastructure/71822 A more complete patch series (including configuration store support and the motion detection work) can be found here: http://git.linuxtv.org/hverkuil/media_tree.git/shortlog/refs/heads/propapi-doc This patch series is a revision of RFCv2: http://www.spinics.net/lists/linux-media/msg71828.html Changes since RFCv2 are: - incorporated Sylwester's comments - split up patch [20/21] into two: one for the codingstyle fixes in the example code, one for the actual DocBook additions. - fixed a bug in patch 6 that broke the old-style VIDIOC_QUERYCTRL. Also made the code in v4l2_query_ext_ctrl() that sets the mask/match variables more readable. If I had to think about my own code, then what are the chances others will understand it? :-) - dropped the support for setting/getting partial matrices. That's too ambiguous at the moment, and we can always add that later if necessary. The API changes required to support complex controls are minimal: - A new V4L2_CTRL_FLAG_HIDDEN has been added: any control with this flag (and complex controls will always have this flag) will never be shown by control panel GUIs. The only way to discover them is to pass the new _FLAG_NEXT_HIDDEN flag to QUERYCTRL. - A new VIDIOC_QUERY_EXT_CTRL ioctl has been added: needed to get the number of elements stored in the control (rows by columns) and the size in byte of each element. As a bonus feature a unit string has also been added as this has been requested in the past. In addition min/max/step/def values are now 64-bit. - A new 'p' field is added to struct v4l2_ext_control to set/get complex values. - A helper flag V4L2_CTRL_FLAG_IS_PTR has been added to tell apps whether the 'value' or 'value64' fields of the v4l2_ext_control struct can be used (bit is cleared) or if the 'p' pointer can be used (bit it set). Once everyone agrees with this API extension I will make a next version of this patch series that adds the Motion Detection support for the solo6x10 and go7007 drivers that can now use the new matrix controls. That way actual drivers will start using this (and it will allow me to move those drivers out of staging). 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
