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/*
* soc-camera generic scaling-cropping manipulation functions
*
* Copyright (C) 2013 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef SOC_SCALE_CROP_H
#define SOC_SCALE_CROP_H
#include <linux/kernel.h>
struct soc_camera_device;
struct v4l2_selection;
struct v4l2_mbus_framefmt;
struct v4l2_pix_format;
struct v4l2_rect;
struct v4l2_subdev;
static inline unsigned int soc_camera_shift_scale(unsigned int size,
unsigned int shift, unsigned int scale)
{
return DIV_ROUND_CLOSEST(size << shift, scale);
}
#define soc_camera_calc_scale(in, shift, out) soc_camera_shift_scale(in, shift, out)
int soc_camera_client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect);
int soc_camera_client_s_selection(struct v4l2_subdev *sd,
struct v4l2_selection *sel, struct v4l2_selection *cam_sel,
struct v4l2_rect *target_rect, struct v4l2_rect *subrect);
int soc_camera_client_scale(struct soc_camera_device *icd,
struct v4l2_rect *rect, struct v4l2_rect *subrect,
struct v4l2_mbus_framefmt *mf,
unsigned int *width, unsigned int *height,
bool host_can_scale, unsigned int shift);
void soc_camera_calc_client_output(struct soc_camera_device *icd,
struct v4l2_rect *rect, struct v4l2_rect *subrect,
const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf,
unsigned int shift);
#endif
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