diff options
Diffstat (limited to 'drivers/media/platform/soc_camera/soc_scale_crop.h')
| -rw-r--r-- | drivers/media/platform/soc_camera/soc_scale_crop.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/media/platform/soc_camera/soc_scale_crop.h b/drivers/media/platform/soc_camera/soc_scale_crop.h new file mode 100644 index 00000000000..184a30dff54 --- /dev/null +++ b/drivers/media/platform/soc_camera/soc_scale_crop.h @@ -0,0 +1,47 @@ +/* + * 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_crop; +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_crop(struct v4l2_subdev *sd, + struct v4l2_crop *crop, struct v4l2_crop *cam_crop, + 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 |