root/include/uapi/linux/media.h

INCLUDED FROM

/*
 * Multimedia device API
 *
 * Copyright (C) 2010 Nokia Corporation
 *
 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 *           Sakari Ailus <sakari.ailus@iki.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __LINUX_MEDIA_H
#define __LINUX_MEDIA_H

#include <linux/ioctl.h>
#include <linux/types.h>
#include <linux/version.h>

#define MEDIA_API_VERSION       KERNEL_VERSION(0, 1, 0)

struct media_device_info {
        char driver[16];
        char model[32];
        char serial[40];
        char bus_info[32];
        __u32 media_version;
        __u32 hw_revision;
        __u32 driver_version;
        __u32 reserved[31];
};

#define MEDIA_ENT_ID_FLAG_NEXT          (1 << 31)

#define MEDIA_ENT_TYPE_SHIFT            16
#define MEDIA_ENT_TYPE_MASK             0x00ff0000
#define MEDIA_ENT_SUBTYPE_MASK          0x0000ffff

#define MEDIA_ENT_T_DEVNODE             (1 << MEDIA_ENT_TYPE_SHIFT)
#define MEDIA_ENT_T_DEVNODE_V4L         (MEDIA_ENT_T_DEVNODE + 1)
#define MEDIA_ENT_T_DEVNODE_FB          (MEDIA_ENT_T_DEVNODE + 2)
#define MEDIA_ENT_T_DEVNODE_ALSA        (MEDIA_ENT_T_DEVNODE + 3)
#define MEDIA_ENT_T_DEVNODE_DVB         (MEDIA_ENT_T_DEVNODE + 4)

#define MEDIA_ENT_T_V4L2_SUBDEV         (2 << MEDIA_ENT_TYPE_SHIFT)
#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR  (MEDIA_ENT_T_V4L2_SUBDEV + 1)
#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH   (MEDIA_ENT_T_V4L2_SUBDEV + 2)
#define MEDIA_ENT_T_V4L2_SUBDEV_LENS    (MEDIA_ENT_T_V4L2_SUBDEV + 3)
/* A converter of analogue video to its digital representation. */
#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER (MEDIA_ENT_T_V4L2_SUBDEV + 4)

#define MEDIA_ENT_FL_DEFAULT            (1 << 0)

struct media_entity_desc {
        __u32 id;
        char name[32];
        __u32 type;
        __u32 revision;
        __u32 flags;
        __u32 group_id;
        __u16 pads;
        __u16 links;

        __u32 reserved[4];

        union {
                /* Node specifications */
                struct {
                        __u32 major;
                        __u32 minor;
                } v4l;
                struct {
                        __u32 major;
                        __u32 minor;
                } fb;
                struct {
                        __u32 card;
                        __u32 device;
                        __u32 subdevice;
                } alsa;
                int dvb;

                /* Sub-device specifications */
                /* Nothing needed yet */
                __u8 raw[184];
        };
};

#define MEDIA_PAD_FL_SINK               (1 << 0)
#define MEDIA_PAD_FL_SOURCE             (1 << 1)
#define MEDIA_PAD_FL_MUST_CONNECT       (1 << 2)

struct media_pad_desc {
        __u32 entity;           /* entity ID */
        __u16 index;            /* pad index */
        __u32 flags;            /* pad flags */
        __u32 reserved[2];
};

#define MEDIA_LNK_FL_ENABLED            (1 << 0)
#define MEDIA_LNK_FL_IMMUTABLE          (1 << 1)
#define MEDIA_LNK_FL_DYNAMIC            (1 << 2)

struct media_link_desc {
        struct media_pad_desc source;
        struct media_pad_desc sink;
        __u32 flags;
        __u32 reserved[2];
};

struct media_links_enum {
        __u32 entity;
        /* Should have enough room for pads elements */
        struct media_pad_desc __user *pads;
        /* Should have enough room for links elements */
        struct media_link_desc __user *links;
        __u32 reserved[4];
};

#define MEDIA_IOC_DEVICE_INFO           _IOWR('|', 0x00, struct media_device_info)
#define MEDIA_IOC_ENUM_ENTITIES         _IOWR('|', 0x01, struct media_entity_desc)
#define MEDIA_IOC_ENUM_LINKS            _IOWR('|', 0x02, struct media_links_enum)
#define MEDIA_IOC_SETUP_LINK            _IOWR('|', 0x03, struct media_link_desc)

#endif /* __LINUX_MEDIA_H */