include/linux/v4l2-subdev.h

   1 /*
   2  * V4L2 subdev userspace API
   3  *
   4  * Copyright (C) 2010 Nokia Corporation
   5  *
   6  * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
   7  *           Sakari Ailus <sakari.ailus@iki.fi>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #ifndef __LINUX_V4L2_SUBDEV_H
  24 #define __LINUX_V4L2_SUBDEV_H
  25
  26 #include <linux/ioctl.h>
  27 #include <linux/types.h>
  28 #include <linux/v4l2-mediabus.h>
  29
  30 /**
  31  * enum v4l2_subdev_format_whence - Media bus format type
  32  * @V4L2_SUBDEV_FORMAT_TRY: try format, for negotiation only
  33  * @V4L2_SUBDEV_FORMAT_ACTIVE: active format, applied to the device
  34  */
  35 enum v4l2_subdev_format_whence {
  36         V4L2_SUBDEV_FORMAT_TRY = 0,
  37         V4L2_SUBDEV_FORMAT_ACTIVE = 1,
  38 };
  39
  40 /**
  41  * struct v4l2_subdev_format - Pad-level media bus format
  42  * @which: format type (from enum v4l2_subdev_format_whence)
  43  * @pad: pad number, as reported by the media API
  44  * @format: media bus format (format code and frame size)
  45  */
  46 struct v4l2_subdev_format {
  47         __u32 which;
  48         __u32 pad;
  49         struct v4l2_mbus_framefmt format;
  50         __u32 reserved[8];
  51 };
  52
  53 /**
  54  * struct v4l2_subdev_crop - Pad-level crop settings
  55  * @which: format type (from enum v4l2_subdev_format_whence)
  56  * @pad: pad number, as reported by the media API
  57  * @rect: pad crop rectangle boundaries
  58  */
  59 struct v4l2_subdev_crop {
  60         __u32 which;
  61         __u32 pad;
  62         struct v4l2_rect rect;
  63         __u32 reserved[8];
  64 };
  65
  66 /**
  67  * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration
  68  * @pad: pad number, as reported by the media API
  69  * @index: format index during enumeration
  70  * @code: format code (from enum v4l2_mbus_pixelcode)
  71  */
  72 struct v4l2_subdev_mbus_code_enum {
  73         __u32 pad;
  74         __u32 index;
  75         __u32 code;
  76         __u32 reserved[9];
  77 };
  78
  79 /**
  80  * struct v4l2_subdev_frame_size_enum - Media bus format enumeration
  81  * @pad: pad number, as reported by the media API
  82  * @index: format index during enumeration
  83  * @code: format code (from enum v4l2_mbus_pixelcode)
  84  */
  85 struct v4l2_subdev_frame_size_enum {
  86         __u32 index;
  87         __u32 pad;
  88         __u32 code;
  89         __u32 min_width;
  90         __u32 max_width;
  91         __u32 min_height;
  92         __u32 max_height;
  93         __u32 reserved[9];
  94 };
  95
  96 /**
  97  * struct v4l2_subdev_frame_interval - Pad-level frame rate
  98  * @pad: pad number, as reported by the media API
  99  * @interval: frame interval in seconds
 100  */
 101 struct v4l2_subdev_frame_interval {
 102         __u32 pad;
 103         struct v4l2_fract interval;
 104         __u32 reserved[9];
 105 };
 106
 107 /**
 108  * struct v4l2_subdev_frame_interval_enum - Frame interval enumeration
 109  * @pad: pad number, as reported by the media API
 110  * @index: frame interval index during enumeration
 111  * @code: format code (from enum v4l2_mbus_pixelcode)
 112  * @width: frame width in pixels
 113  * @height: frame height in pixels
 114  * @interval: frame interval in seconds
 115  */
 116 struct v4l2_subdev_frame_interval_enum {
 117         __u32 index;
 118         __u32 pad;
 119         __u32 code;
 120         __u32 width;
 121         __u32 height;
 122         struct v4l2_fract interval;
 123         __u32 reserved[9];
 124 };
 125
 126 #define V4L2_SUBDEV_SEL_FLAG_SIZE_GE                    (1 << 0)
 127 #define V4L2_SUBDEV_SEL_FLAG_SIZE_LE                    (1 << 1)
 128 #define V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG                (1 << 2)
 129
 130 /* active cropping area */
 131 #define V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL                 0x0000
 132 /* cropping bounds */
 133 #define V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS                 0x0002
 134 /* current composing area */
 135 #define V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL              0x0100
 136 /* composing bounds */
 137 #define V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS              0x0102
 138
 139
 140 /**
 141  * struct v4l2_subdev_selection - selection info
 142  *
 143  * @which: either V4L2_SUBDEV_FORMAT_ACTIVE or V4L2_SUBDEV_FORMAT_TRY
 144  * @pad: pad number, as reported by the media API
 145  * @target: selection target, used to choose one of possible rectangles
 146  * @flags: constraint flags
 147  * @r: coordinates of the selection window
 148  * @reserved: for future use, set to zero for now
 149  *
 150  * Hardware may use multiple helper windows to process a video stream.
 151  * The structure is used to exchange this selection areas between
 152  * an application and a driver.
 153  */
 154 struct v4l2_subdev_selection {
 155         __u32 which;
 156         __u32 pad;
 157         __u32 target;
 158         __u32 flags;
 159         struct v4l2_rect r;
 160         __u32 reserved[8];
 161 };
 162
 163 #define VIDIOC_SUBDEV_G_FMT     _IOWR('V',  4, struct v4l2_subdev_format)
 164 #define VIDIOC_SUBDEV_S_FMT     _IOWR('V',  5, struct v4l2_subdev_format)
 165 #define VIDIOC_SUBDEV_G_FRAME_INTERVAL \
 166                         _IOWR('V', 21, struct v4l2_subdev_frame_interval)
 167 #define VIDIOC_SUBDEV_S_FRAME_INTERVAL \
 168                         _IOWR('V', 22, struct v4l2_subdev_frame_interval)
 169 #define VIDIOC_SUBDEV_ENUM_MBUS_CODE \
 170                         _IOWR('V',  2, struct v4l2_subdev_mbus_code_enum)
 171 #define VIDIOC_SUBDEV_ENUM_FRAME_SIZE \
 172                         _IOWR('V', 74, struct v4l2_subdev_frame_size_enum)
 173 #define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \
 174                         _IOWR('V', 75, struct v4l2_subdev_frame_interval_enum)
 175 #define VIDIOC_SUBDEV_G_CROP    _IOWR('V', 59, struct v4l2_subdev_crop)
 176 #define VIDIOC_SUBDEV_S_CROP    _IOWR('V', 60, struct v4l2_subdev_crop)
 177 #define VIDIOC_SUBDEV_G_SELECTION \
 178         _IOWR('V', 61, struct v4l2_subdev_selection)
 179 #define VIDIOC_SUBDEV_S_SELECTION \
 180         _IOWR('V', 62, struct v4l2_subdev_selection)
 181
 182 #endif