MAJOR=4 MINOR=43 DEVNAME=tty43 + m_I|+azD lF?/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * V4L2 controls support header. * * Copyright (C) 2010 Hans Verkuil */ #ifndef _V4L2_CTRLS_H #define _V4L2_CTRLS_H #include #include #include #include /* * Include the stateless codec compound control definitions. * This will move to the public headers once this API is fully stable. */ #include /* forward references */ struct file; struct poll_table_struct; struct v4l2_ctrl; struct v4l2_ctrl_handler; struct v4l2_ctrl_helper; struct v4l2_fh; struct v4l2_fwnode_device_properties; struct v4l2_subdev; struct v4l2_subscribed_event; struct video_device; /** * union v4l2_ctrl_ptr - A pointer to a control value. * @p_s32: Pointer to a 32-bit signed value. * @p_s64: Pointer to a 64-bit signed value. * @p_u8: Pointer to a 8-bit unsigned value. * @p_u16: Pointer to a 16-bit unsigned value. * @p_u32: Pointer to a 32-bit unsigned value. * @p_char: Pointer to a string. * @p_mpeg2_sequence: Pointer to a MPEG2 sequence structure. * @p_mpeg2_picture: Pointer to a MPEG2 picture structure. * @p_mpeg2_quantisation: Pointer to a MPEG2 quantisation data structure. * @p_fwht_params: Pointer to a FWHT stateless parameters structure. * @p_h264_sps: Pointer to a struct v4l2_ctrl_h264_sps. * @p_h264_pps: Pointer to a struct v4l2_ctrl_h264_pps. * @p_h264_scaling_matrix: Pointer to a struct v4l2_ctrl_h264_scaling_matrix. * @p_h264_slice_params: Pointer to a struct v4l2_ctrl_h264_slice_params. * @p_h264_decode_params: Pointer to a struct v4l2_ctrl_h264_decode_params. * @p_h264_pred_weights: Pointer to a struct v4l2_ctrl_h264_pred_weights. * @p_vp8_frame: Pointer to a VP8 frame params structure. * @p_vp9_compressed_hdr_probs: Pointer to a VP9 frame compressed header probs structure. * @p_vp9_frame: Pointer to a VP9 frame params structure. * @p_hevc_sps: Pointer to an HEVC sequence parameter set structure. * @p_hevc_pps: Pointer to an HEVC picture parameter set structure. * @p_hevc_slice_params: Pointer to an HEVC slice parameters structure. * @p_hdr10_cll: Pointer to an HDR10 Content Light Level structure. * @p_hdr10_mastering: Pointer to an HDR10 Mastering Display structure. * @p_area: Pointer to an area. * @p: Pointer to a compound value. * @p_const: Pointer to a constant compound value. */ union v4l2_ctrl_ptr { s32 *p_s32; s64 *p_s64; u8 *p_u8; u16 *p_u16; u32 *p_u32; char *p_char; struct v4l2_ctrl_mpeg2_sequence *p_mpeg2_sequence; struct v4l2_ctrl_mpeg2_picture *p_mpeg2_picture; struct v4l2_ctrl_mpeg2_quantisation *p_mpeg2_quantisation; struct v4l2_ctrl_fwht_params *p_fwht_params; struct v4l2_ctrl_h264_sps *p_h264_sps; struct v4l2_ctrl_h264_pps *p_h264_pps; struct v4l2_ctrl_h264_scaling_matrix *p_h264_scaling_matrix; struct v4l2_ctrl_h264_slice_params *p_h264_slice_params; struct v4l2_ctrl_h264_decode_params *p_h264_decode_params; struct v4l2_ctrl_h264_pred_weights *p_h264_pred_weights; struct v4l2_ctrl_vp8_frame *p_vp8_frame; struct v4l2_ctrl_hevc_sps *p_hevc_sps; struct v4l2_ctrl_hevc_pps *p_hevc_pps; struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params; struct v4l2_ctrl_vp9_compressed_hdr *p_vp9_compressed_hdr_probs; struct v4l2_ctrl_vp9_frame *p_vp9_frame; struct v4l2_ctrl_hdr10_cll_info *p_hdr10_cll; struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering; struct v4l2_area *p_area; void *p; const void *p_const; }; /** * v4l2_ctrl_ptr_create() - Helper function to return a v4l2_ctrl_ptr from a * void pointer * @ptr: The void pointer */ static inline union v4l2_ctrl_ptr v4l2_ctrl_ptr_create(void *ptr) { union v4l2_ctrl_ptr p = { .p = ptr }; return p; } /** * struct v4l2_ctrl_ops - The control operations that the driver has to provide. * * @g_volatile_ctrl: Get a new value for this control. Generally only relevant * for volatile (and usually read-only) controls such