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_mbus_code_enum - Media bus format enumeration
  55  * @pad: pad number, as reported by the media API
  56  * @index: format index during enumeration
  57  * @code: format code (from enum v4l2_mbus_pixelcode)
  58  */
  59 struct v4l2_subdev_mbus_code_enum {
  60         __u32 pad;
  61         __u32 index;
  62         __u32 code;
  63         __u32 reserved[9];
  64 };
  65
  66 /**
  67  * struct v4l2_subdev_frame_size_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_frame_size_enum {
  73         __u32 index;
  74         __u32 pad;
  75         __u32 code;
  76         __u32 min_width;
  77         __u32 max_width;
  78         __u32 min_height;
  79         __u32 max_height;
  80         __u32 reserved[9];
  81 };
  82
  83 /**
  84  * struct v4l2_subdev_frame_interval - Pad-level frame rate
  85  * @pad: pad number, as reported by the media API
  86  * @interval: frame interval in seconds
  87  */
  88 struct v4l2_subdev_frame_interval {
  89         __u32 pad;
  90         struct v4l2_fract interval;
  91         __u32 reserved[9];
  92 };
  93
  94 /**
  95  * struct v4l2_subdev_frame_interval_enum - Frame interval enumeration
  96  * @pad: pad number, as reported by the media API
  97  * @index: frame interval index during enumeration
  98  * @code: format code (from enum v4l2_mbus_pixelcode)
  99  * @width: frame width in pixels
 100  * @height: frame height in pixels
 101  * @interval: frame interval in seconds
 102  */
 103 struct v4l2_subdev_frame_interval_enum {
 104         __u32 index;
 105         __u32 pad;
 106         __u32 code;
 107         __u32 width;
 108         __u32 height;
 109         struct v4l2_fract interval;
 110         __u32 reserved[9];
 111 };
 112
 113 #define VIDIOC_SUBDEV_G_FMT     _IOWR('V',  4, struct v4l2_subdev_format)
 114 #define VIDIOC_SUBDEV_S_FMT     _IOWR('V',  5, struct v4l2_subdev_format)
 115 #define VIDIOC_SUBDEV_G_FRAME_INTERVAL \
 116                         _IOWR('V', 21, struct v4l2_subdev_frame_interval)
 117 #define VIDIOC_SUBDEV_S_FRAME_INTERVAL \
 118                         _IOWR('V', 22, struct v4l2_subdev_frame_interval)
 119 #define VIDIOC_SUBDEV_ENUM_MBUS_CODE \
 120                         _IOWR('V',  2, struct v4l2_subdev_mbus_code_enum)
 121 #define VIDIOC_SUBDEV_ENUM_FRAME_SIZE \
 122                         _IOWR('V', 74, struct v4l2_subdev_frame_size_enum)
 123 #define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \
 124                         _IOWR('V', 75, struct v4l2_subdev_frame_interval_enum)
 125
 126 #endif