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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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fb582cba44
Implement support for dynamically allocated arrays. Most of the changes concern keeping track of the number of elements of the array and the number of elements allocated for the array and reallocating memory if needed. Acked-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> Acked-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Tested-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> Tested-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
95 lines
3.1 KiB
C
95 lines
3.1 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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int 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 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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