97 lines
3.2 KiB
C
97 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* V4L2 controls framework private header.
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*
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* Copyright (C) 2010-2021 Hans Verkuil <hverkuil-cisco@xs4all.nl>
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*/
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#ifndef _V4L2_CTRLS_PRIV_H_
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#define _V4L2_CTRLS_PRIV_H_
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#define dprintk(vdev, fmt, arg...) do { \
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if (!WARN_ON(!(vdev)) && ((vdev)->dev_debug & V4L2_DEV_DEBUG_CTRL)) \
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printk(KERN_DEBUG pr_fmt("%s: %s: " fmt), \
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__func__, video_device_node_name(vdev), ##arg); \
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} while (0)
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#define has_op(master, op) \
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((master)->ops && (master)->ops->op)
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#define call_op(master, op) \
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(has_op(master, op) ? (master)->ops->op(master) : 0)
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static inline u32 node2id(struct list_head *node)
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{
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return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id;
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}
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/*
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* Small helper function to determine if the autocluster is set to manual
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* mode.
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*/
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static inline bool is_cur_manual(const struct v4l2_ctrl *master)
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{
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return master->is_auto && master->cur.val == master->manual_mode_value;
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}
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/*
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* Small helper function to determine if the autocluster will be set to manual
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* mode.
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*/
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static inline bool is_new_manual(const struct v4l2_ctrl *master)
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{
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return master->is_auto && master->val == master->manual_mode_value;
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}
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static inline u32 user_flags(const struct v4l2_ctrl *ctrl)
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{
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u32 flags = ctrl->flags;
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if (ctrl->is_ptr)
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flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
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return flags;
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}
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/* v4l2-ctrls-core.c */
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void cur_to_new(struct v4l2_ctrl *ctrl);
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void cur_to_req(struct v4l2_ctrl_ref *ref);
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void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags);
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void new_to_req(struct v4l2_ctrl_ref *ref);
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void req_to_new(struct v4l2_ctrl_ref *ref);
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void send_initial_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl);
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void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes);
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int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new);
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int handler_new_ref(struct v4l2_ctrl_handler *hdl,
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struct v4l2_ctrl *ctrl,
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struct v4l2_ctrl_ref **ctrl_ref,
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bool from_other_dev, bool allocate_req);
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struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id);
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struct v4l2_ctrl_ref *find_ref_lock(struct v4l2_ctrl_handler *hdl, u32 id);
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int check_range(enum v4l2_ctrl_type type,
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s64 min, s64 max, u64 step, s64 def);
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void update_from_auto_cluster(struct v4l2_ctrl *master);
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int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master,
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bool set, u32 ch_flags);
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/* v4l2-ctrls-api.c */
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int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl,
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struct v4l2_ext_controls *cs,
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struct video_device *vdev);
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int try_set_ext_ctrls_common(struct v4l2_fh *fh,
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struct v4l2_ctrl_handler *hdl,
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struct v4l2_ext_controls *cs,
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struct video_device *vdev, bool set);
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/* v4l2-ctrls-request.c */
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void v4l2_ctrl_handler_init_request(struct v4l2_ctrl_handler *hdl);
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void v4l2_ctrl_handler_free_request(struct v4l2_ctrl_handler *hdl);
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int v4l2_g_ext_ctrls_request(struct v4l2_ctrl_handler *hdl, struct video_device *vdev,
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struct media_device *mdev, struct v4l2_ext_controls *cs);
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int try_set_ext_ctrls_request(struct v4l2_fh *fh,
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struct v4l2_ctrl_handler *hdl,
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struct video_device *vdev,
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struct media_device *mdev,
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struct v4l2_ext_controls *cs, bool set);
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#endif
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