/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Support for Intel Camera Imaging ISP subsystem.
 * Copyright (c) 2015, Intel Corporation.
 */

#ifndef __TAG_GLOBAL_H_INCLUDED__
#define __TAG_GLOBAL_H_INCLUDED__

/* offsets for encoding/decoding the tag into an uint32_t */

#define TAG_CAP 1
#define TAG_EXP 2

#define TAG_NUM_CAPTURES_SIGN_SHIFT      6
#define TAG_OFFSET_SIGN_SHIFT            7
#define TAG_NUM_CAPTURES_SHIFT           8
#define TAG_OFFSET_SHIFT                16
#define TAG_SKIP_SHIFT                  24

#define TAG_EXP_ID_SHIFT                 8

/* Data structure containing the tagging information which is used in
 * continuous mode to specify which frames should be captured.
 * num_captures         The number of RAW frames to be processed to
 *                      YUV. Setting this to -1 will make continuous
 *                      capture run until it is stopped.
 * skip                 Skip N frames in between captures. This can be
 *                      used to select a slower capture frame rate than
 *                      the sensor output frame rate.
 * offset               Start the RAW-to-YUV processing at RAW buffer
 *                      with this offset. This allows the user to
 *                      process RAW frames that were captured in the
 *                      past or future.
 * exp_id               Exposure id of the RAW frame to tag.
 *
 * NOTE: Either exp_id = 0 or all other fields are 0
 *       (so yeah, this could be a union)
 */

struct sh_css_tag_descr {
        int num_captures;
        unsigned int skip;
        int offset;
        unsigned int exp_id;
};

#endif /* __TAG_GLOBAL_H_INCLUDED__ */