Some drivers also need a control like V4L2_CID_MPEG_MFC51_VIDEO_FORCE_FRAME_TYPE to force an encoder frame type. This patch adds a general V4L2_CID_MPEG_VIDEO_FORCE_FRAME_TYPE. This control only affects the next queued buffer. There's no need to clear the value after requesting an I frame. But all controls are set in v4l2_ctrl_handler_setup. So a default DISABLED value is required. Basically this control is like V4L2_CTRL_TYPE_BUTTON with parameters. How to prevent a control from being set in v4l2_ctrl_handler_setup so DISABLED value is not needed? Does it make sense not to set a control if it is EXECUTE_ON_WRITE? Wu-Cheng Li (1): v4l: add V4L2_CID_MPEG_VIDEO_FORCE_FRAME_TYPE. Documentation/DocBook/media/v4l/controls.xml | 23 +++++++++++++++++++++++ drivers/media/v4l2-core/v4l2-ctrls.c | 13 +++++++++++++ include/uapi/linux/v4l2-controls.h | 5 +++++ 3 files changed, 41 insertions(+) -- 2.6.0.rc2.230.g3dd15c0 -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
