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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Helper functions for HEVC stateless codecs.
*/
#ifndef _MEDIA_V4L2_HEVC_H
#define _MEDIA_V4L2_HEVC_H
#include <linux/minmax.h>
#include <media/v4l2-ctrls.h>
/**
* v4l2_hevc_pps_num_tile_columns - number of HEVC tile columns, bounded
* @pps: the V4L2 HEVC PPS control
*
* Return the number of tile columns (num_tile_columns_minus1 + 1) clamped to
* the capacity of column_width_minus1[]. The control validation already
* rejects out-of-range counts; this keeps the consuming drivers bounded too.
*/
static inline unsigned int
v4l2_hevc_pps_num_tile_columns(const struct v4l2_ctrl_hevc_pps *pps)
{
return min_t(unsigned int, pps->num_tile_columns_minus1 + 1,
ARRAY_SIZE(pps->column_width_minus1));
}
/**
* v4l2_hevc_pps_num_tile_rows - number of HEVC tile rows, bounded
* @pps: the V4L2 HEVC PPS control
*
* Return the number of tile rows (num_tile_rows_minus1 + 1) clamped to the
* capacity of row_height_minus1[].
*/
static inline unsigned int
v4l2_hevc_pps_num_tile_rows(const struct v4l2_ctrl_hevc_pps *pps)
{
return min_t(unsigned int, pps->num_tile_rows_minus1 + 1,
ARRAY_SIZE(pps->row_height_minus1));
}
#endif /* _MEDIA_V4L2_HEVC_H */
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