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videodev2.h

#ifndef __LINUX_VIDEODEV2_H
#define __LINUX_VIDEODEV2_H
/*
 *    Video for Linux Two
 *
 *    Header file for v4l or V4L2 drivers and applications, for
 *    Linux kernels 2.2.x or 2.4.x.
 *
 *    See http://bytesex.org/v4l/ for API specs and other
 *    v4l2 documentation.
 *
 *    Author: Bill Dirks <bdirks@pacbell.net>
 *          Justin Schoeman
 *          et al.
 */
#ifdef __KERNEL__
#include <linux/time.h> /* need struct timeval */
#endif

/*
 *    M I S C E L L A N E O U S
 */

/*  Four-character-code (FOURCC) */
#define v4l2_fourcc(a,b,c,d)\
        (((__u32)(a)<<0)|((__u32)(b)<<8)|((__u32)(c)<<16)|((__u32)(d)<<24))

/*
 *    E N U M S
 */
enum v4l2_field {
      V4L2_FIELD_ANY        = 0, /* driver can choose from none,
                              top, bottom, interlaced
                              depending on whatever it thinks
                              is approximate ... */
      V4L2_FIELD_NONE       = 1, /* this device has no fields ... */
      V4L2_FIELD_TOP        = 2, /* top field only */
      V4L2_FIELD_BOTTOM     = 3, /* bottom field only */
      V4L2_FIELD_INTERLACED = 4, /* both fields interlaced */
      V4L2_FIELD_SEQ_TB     = 5, /* both fields sequential into one
                              buffer, top-bottom order */
      V4L2_FIELD_SEQ_BT     = 6, /* same as above + bottom-top order */
      V4L2_FIELD_ALTERNATE  = 7, /* both fields alternating into
                              separate buffers */
};
#define V4L2_FIELD_HAS_TOP(field)   \
      ((field) == V4L2_FIELD_TOP    ||\
       (field) == V4L2_FIELD_INTERLACED ||\
       (field) == V4L2_FIELD_SEQ_TB ||\
       (field) == V4L2_FIELD_SEQ_BT)
#define V4L2_FIELD_HAS_BOTTOM(field)      \
      ((field) == V4L2_FIELD_BOTTOM       ||\
       (field) == V4L2_FIELD_INTERLACED ||\
       (field) == V4L2_FIELD_SEQ_TB ||\
       (field) == V4L2_FIELD_SEQ_BT)
#define V4L2_FIELD_HAS_BOTH(field)  \
      ((field) == V4L2_FIELD_INTERLACED ||\
       (field) == V4L2_FIELD_SEQ_TB ||\
       (field) == V4L2_FIELD_SEQ_BT)

enum v4l2_buf_type {
      V4L2_BUF_TYPE_VIDEO_CAPTURE  = 1,
      V4L2_BUF_TYPE_VIDEO_OUTPUT   = 2,
      V4L2_BUF_TYPE_VIDEO_OVERLAY  = 3,
      V4L2_BUF_TYPE_VBI_CAPTURE    = 4,
      V4L2_BUF_TYPE_VBI_OUTPUT     = 5,
      V4L2_BUF_TYPE_PRIVATE        = 0x80,
};

enum v4l2_ctrl_type {
      V4L2_CTRL_TYPE_INTEGER       = 1,
      V4L2_CTRL_TYPE_BOOLEAN       = 2,
      V4L2_CTRL_TYPE_MENU          = 3,
      V4L2_CTRL_TYPE_BUTTON        = 4,
};

enum v4l2_tuner_type {
      V4L2_TUNER_RADIO       = 1,
      V4L2_TUNER_ANALOG_TV         = 2,
};

enum v4l2_memory {
      V4L2_MEMORY_MMAP             = 1,
      V4L2_MEMORY_USERPTR          = 2,
      V4L2_MEMORY_OVERLAY          = 3,
};

/* see also http://vektor.theorem.ca/graphics/ycbcr/ */
enum v4l2_colorspace {
      /* ITU-R 601 -- broadcast NTSC/PAL */
      V4L2_COLORSPACE_SMPTE170M     = 1,

      /* 1125-Line (US) HDTV */
      V4L2_COLORSPACE_SMPTE240M     = 2,

      /* HD and modern captures. */
      V4L2_COLORSPACE_REC709        = 3,
      
      /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */
      V4L2_COLORSPACE_BT878         = 4,
      
      /* These should be useful.  Assume 601 extents. */
      V4L2_COLORSPACE_470_SYSTEM_M  = 5,
      V4L2_COLORSPACE_470_SYSTEM_BG = 6,
      
      /* I know there will be cameras that send this.  So, this is
       * unspecified chromaticities and full 0-255 on each of the
       * Y'CbCr components
       */
      V4L2_COLORSPACE_JPEG          = 7,
      
      /* For RGB colourspaces, this is probably a good start. */
      V4L2_COLORSPACE_SRGB          = 8,
};

enum v4l2_priority {
      V4L2_PRIORITY_UNSET       = 0,  /* not initialized */
      V4L2_PRIORITY_BACKGROUND  = 1,
      V4L2_PRIORITY_INTERACTIVE = 2,
      V4L2_PRIORITY_RECORD      = 3,
      V4L2_PRIORITY_DEFAULT     = V4L2_PRIORITY_INTERACTIVE,
};

00124 struct v4l2_rect {
      __s32   left;
      __s32   top;
      __s32   width;
      __s32   height;
};

00131 struct v4l2_fract {
      __u32   numerator;
      __u32   denominator;
};

/*
 *    D R I V E R   C A P A B I L I T I E S
 */
00139 struct v4l2_capability
{
      __u8  driver[16]; /* i.e. "bttv" */
      __u8  card[32];   /* i.e. "Hauppauge WinTV" */
      __u8  bus_info[32];     /* "PCI:" + pci_name(pci_dev) */
      __u32   version;        /* should use KERNEL_VERSION() */
      __u32 capabilities;     /* Device capabilities */
      __u32 reserved[4];
};

/* Values for 'capabilities' field */
#define V4L2_CAP_VIDEO_CAPTURE      0x00000001  /* Is a video capture device */
#define V4L2_CAP_VIDEO_OUTPUT 0x00000002  /* Is a video output device */
#define V4L2_CAP_VIDEO_OVERLAY      0x00000004  /* Can do video overlay */
#define V4L2_CAP_VBI_CAPTURE  0x00000010  /* Is a VBI capture device */
#define V4L2_CAP_VBI_OUTPUT   0x00000020  /* Is a VBI output device */
#define V4L2_CAP_RDS_CAPTURE  0x00000100  /* RDS data capture */

#define V4L2_CAP_TUNER        0x00010000  /* has a tuner */
#define V4L2_CAP_AUDIO        0x00020000  /* has audio support */
#define V4L2_CAP_RADIO        0x00040000  /* is a radio device */

#define V4L2_CAP_READWRITE      0x01000000  /* read/write systemcalls */
#define V4L2_CAP_ASYNCIO        0x02000000  /* async I/O */
#define V4L2_CAP_STREAMING      0x04000000  /* streaming I/O ioctls */

/*
 *    V I D E O   I M A G E   F O R M A T
 */

00169 struct v4l2_pix_format
{
      __u32                   width;
      __u32             height;
      __u32             pixelformat;
      enum v4l2_field   field;
      __u32             bytesperline;     /* for padding, zero if unused */
      __u32                   sizeimage;
        enum v4l2_colorspace  colorspace;
      __u32             priv;       /* private data, depends on pixelformat */
};

/*           Pixel format    FOURCC                  depth  Description   */
#define V4L2_PIX_FMT_RGB332  v4l2_fourcc('R','G','B','1') /*  8  RGB-3-3-2     */
#define V4L2_PIX_FMT_RGB555  v4l2_fourcc('R','G','B','O') /* 16  RGB-5-5-5     */
#define V4L2_PIX_FMT_RGB565  v4l2_fourcc('R','G','B','P') /* 16  RGB-5-6-5     */
#define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R','G','B','Q') /* 16  RGB-5-5-5 BE  */
#define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R','G','B','R') /* 16  RGB-5-6-5 BE  */
#define V4L2_PIX_FMT_BGR24   v4l2_fourcc('B','G','R','3') /* 24  BGR-8-8-8     */
#define V4L2_PIX_FMT_RGB24   v4l2_fourcc('R','G','B','3') /* 24  RGB-8-8-8     */
#define V4L2_PIX_FMT_BGR32   v4l2_fourcc('B','G','R','4') /* 32  BGR-8-8-8-8   */
#define V4L2_PIX_FMT_RGB32   v4l2_fourcc('R','G','B','4') /* 32  RGB-8-8-8-8   */
#define V4L2_PIX_FMT_GREY    v4l2_fourcc('G','R','E','Y') /*  8  Greyscale     */
#define V4L2_PIX_FMT_YVU410  v4l2_fourcc('Y','V','U','9') /*  9  YVU 4:1:0     */
#define V4L2_PIX_FMT_YVU420  v4l2_fourcc('Y','V','1','2') /* 12  YVU 4:2:0     */
#define V4L2_PIX_FMT_YUYV    v4l2_fourcc('Y','U','Y','V') /* 16  YUV 4:2:2     */
#define V4L2_PIX_FMT_UYVY    v4l2_fourcc('U','Y','V','Y') /* 16  YUV 4:2:2     */
#define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4','2','2','P') /* 16  YVU422 planar */
#define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4','1','1','P') /* 16  YVU411 planar */
#define V4L2_PIX_FMT_Y41P    v4l2_fourcc('Y','4','1','P') /* 12  YUV 4:1:1     */

/* two planes -- one Y, one Cr + Cb interleaved  */
#define V4L2_PIX_FMT_NV12    v4l2_fourcc('N','V','1','2') /* 12  Y/CbCr 4:2:0  */
#define V4L2_PIX_FMT_NV21    v4l2_fourcc('N','V','2','1') /* 12  Y/CrCb 4:2:0  */

/*  The following formats are not defined in the V4L2 specification */
#define V4L2_PIX_FMT_YUV410  v4l2_fourcc('Y','U','V','9') /*  9  YUV 4:1:0     */
#define V4L2_PIX_FMT_YUV420  v4l2_fourcc('Y','U','1','2') /* 12  YUV 4:2:0     */
#define V4L2_PIX_FMT_YYUV    v4l2_fourcc('Y','Y','U','V') /* 16  YUV 4:2:2     */
#define V4L2_PIX_FMT_HI240   v4l2_fourcc('H','I','2','4') /*  8  8-bit color   */

/* compressed formats */
#define V4L2_PIX_FMT_MJPEG    v4l2_fourcc('M','J','P','G') /* Motion-JPEG   */
#define V4L2_PIX_FMT_JPEG     v4l2_fourcc('J','P','E','G') /* JFIF JPEG     */
#define V4L2_PIX_FMT_DV       v4l2_fourcc('d','v','s','d') /* 1394          */
#define V4L2_PIX_FMT_MPEG     v4l2_fourcc('M','P','E','G') /* MPEG          */

/*  Vendor-specific formats   */
#define V4L2_PIX_FMT_WNVA     v4l2_fourcc('W','N','V','A') /* Winnov hw compress */

/*
 *    F O R M A T   E N U M E R A T I O N
 */
00222 struct v4l2_fmtdesc
{
      __u32             index;             /* Format number      */
      enum v4l2_buf_type  type;              /* buffer type        */
      __u32               flags;
      __u8              description[32];   /* Description string */
      __u32             pixelformat;       /* Format fourcc      */
      __u32             reserved[4];
};

#define V4L2_FMT_FLAG_COMPRESSED 0x0001


/*
 *    T I M E C O D E
 */
00238 struct v4l2_timecode
{
      __u32 type;
      __u32 flags;
      __u8  frames;
      __u8  seconds;
      __u8  minutes;
      __u8  hours;
      __u8  userbits[4];
};

/*  Type  */
#define V4L2_TC_TYPE_24FPS          1
#define V4L2_TC_TYPE_25FPS          2
#define V4L2_TC_TYPE_30FPS          3
#define V4L2_TC_TYPE_50FPS          4
#define V4L2_TC_TYPE_60FPS          5

/*  Flags  */
#define V4L2_TC_FLAG_DROPFRAME            0x0001 /* "drop-frame" mode */
#define V4L2_TC_FLAG_COLORFRAME           0x0002
#define V4L2_TC_USERBITS_field            0x000C
#define V4L2_TC_USERBITS_USERDEFINED      0x0000
#define V4L2_TC_USERBITS_8BITCHARS  0x0008
/* The above is based on SMPTE timecodes */


/*
 *    C O M P R E S S I O N   P A R A M E T E R S
 */
#if 0
/* ### generic compression settings don't work, there is too much
 * ### codec-specific stuff.  Maybe reuse that for MPEG codec settings
 * ### later ... */
struct v4l2_compression
{
      __u32 quality;
      __u32 keyframerate;
      __u32 pframerate;
      __u32 reserved[5];

/*  what we'll need for MPEG, extracted from some postings on
    the v4l list (Gert Vervoort, PlasmaJohn).

system stream:
  - type: elementary stream(ES), packatised elementary stream(s) (PES)
    program stream(PS), transport stream(TS)
  - system bitrate
  - PS packet size (DVD: 2048 bytes, VCD: 2324 bytes)
  - TS video PID
  - TS audio PID
  - TS PCR PID
  - TS system information tables (PAT, PMT, CAT, NIT and SIT)
  - (MPEG-1 systems stream vs. MPEG-2 program stream (TS not supported
    by MPEG-1 systems)

audio:
  - type: MPEG (+Layer I,II,III), AC-3, LPCM
  - bitrate
  - sampling frequency (DVD: 48 Khz, VCD: 44.1 KHz, 32 kHz)
  - Trick Modes? (ff, rew)
  - Copyright
  - Inverse Telecine

video:
  - picturesize (SIF, 1/2 D1, 2/3 D1, D1) and PAL/NTSC norm can be set
    through excisting V4L2 controls
  - noise reduction, parameters encoder specific?
  - MPEG video version: MPEG-1, MPEG-2
  - GOP (Group Of Pictures) definition:
    - N: number of frames per GOP
    - M: distance between reference (I,P) frames
    - open/closed GOP
  - quantiser matrix: inter Q matrix (64 bytes) and intra Q matrix (64 bytes)
  - quantiser scale: linear or logarithmic
  - scanning: alternate or zigzag
  - bitrate mode: CBR (constant bitrate) or VBR (variable bitrate).
  - target video bitrate for CBR
  - target video bitrate for VBR
  - maximum video bitrate for VBR - min. quantiser value for VBR
  - max. quantiser value for VBR
  - adaptive quantisation value
  - return the number of bytes per GOP or bitrate for bitrate monitoring

*/
};
#endif

00326 struct v4l2_jpegcompression
{
      int quality;

      int  APPn;              /* Number of APP segment to be written,
                         * must be 0..15 */
      int  APP_len;           /* Length of data in JPEG APPn segment */
      char APP_data[60];      /* Data in the JPEG APPn segment. */
      
      int  COM_len;           /* Length of data in JPEG COM segment */
      char COM_data[60];      /* Data in JPEG COM segment */
      
      __u32 jpeg_markers;     /* Which markers should go into the JPEG
                         * output. Unless you exactly know what
                         * you do, leave them untouched.
                         * Inluding less markers will make the
                         * resulting code smaller, but there will
                         * be fewer aplications which can read it.
                         * The presence of the APP and COM marker
                         * is influenced by APP_len and COM_len
                         * ONLY, not by this property! */
      
#define V4L2_JPEG_MARKER_DHT (1<<3)    /* Define Huffman Tables */
#define V4L2_JPEG_MARKER_DQT (1<<4)    /* Define Quantization Tables */
#define V4L2_JPEG_MARKER_DRI (1<<5)    /* Define Restart Interval */
#define V4L2_JPEG_MARKER_COM (1<<6)    /* Comment segment */
#define V4L2_JPEG_MARKER_APP (1<<7)    /* App segment, driver will
                                        * allways use APP0 */
};


/*
 *    M E M O R Y - M A P P I N G   B U F F E R S
 */
00360 struct v4l2_requestbuffers
{
      __u32                 count;
      enum v4l2_buf_type      type;
      enum v4l2_memory        memory;
      __u32                 reserved[2];
};

00368 struct v4l2_buffer
{
      __u32             index;
      enum v4l2_buf_type      type;
      __u32             bytesused;
      __u32             flags;
      enum v4l2_field         field;
      struct timeval          timestamp;
      struct v4l2_timecode    timecode;
      __u32             sequence;

      /* memory location */
      enum v4l2_memory        memory;
      union {
            __u32           offset;
            unsigned long   userptr;
      } m;
      __u32             length;

      __u32             reserved[2];
};

/*  Flags for 'flags' field */
#define V4L2_BUF_FLAG_MAPPED  0x0001  /* Buffer is mapped (flag) */
#define V4L2_BUF_FLAG_QUEUED  0x0002      /* Buffer is queued for processing */
#define V4L2_BUF_FLAG_DONE    0x0004      /* Buffer is ready */
#define V4L2_BUF_FLAG_KEYFRAME      0x0008      /* Image is a keyframe (I-frame) */
#define V4L2_BUF_FLAG_PFRAME  0x0010      /* Image is a P-frame */
#define V4L2_BUF_FLAG_BFRAME  0x0020      /* Image is a B-frame */
#define V4L2_BUF_FLAG_TIMECODE      0x0100      /* timecode field is valid */

/*
 *    O V E R L A Y   P R E V I E W
 */
00402 struct v4l2_framebuffer
{
      __u32             capability;
      __u32             flags;
/* FIXME: in theory we should pass something like PCI device + memory
 * region + offset instead of some physical address */
      void*                   base;
      struct v4l2_pix_format  fmt;
};
/*  Flags for the 'capability' field. Read only */
#define V4L2_FBUF_CAP_EXTERNOVERLAY 0x0001
#define V4L2_FBUF_CAP_CHROMAKEY           0x0002
#define V4L2_FBUF_CAP_LIST_CLIPPING     0x0004
#define V4L2_FBUF_CAP_BITMAP_CLIPPING     0x0008
/*  Flags for the 'flags' field. */
#define V4L2_FBUF_FLAG_PRIMARY            0x0001
#define V4L2_FBUF_FLAG_OVERLAY            0x0002
#define V4L2_FBUF_FLAG_CHROMAKEY    0x0004

00421 struct v4l2_clip
{
      struct v4l2_rect        c;
      struct v4l2_clip  *next;
};

00427 struct v4l2_window
{
      struct v4l2_rect        w;
      enum v4l2_field   field;
      __u32             chromakey;
      struct v4l2_clip  *clips;
      __u32             clipcount;
      void              *bitmap;
};


/*
 *    C A P T U R E   P A R A M E T E R S
 */
00441 struct v4l2_captureparm
{
      __u32          capability;      /*  Supported modes */
      __u32          capturemode;     /*  Current mode */
      struct v4l2_fract  timeperframe;  /*  Time per frame in .1us units */
      __u32          extendedmode;  /*  Driver-specific extensions */
      __u32              readbuffers;   /*  # of buffers for read */
      __u32          reserved[4];
};
/*  Flags for 'capability' and 'capturemode' fields */
#define V4L2_MODE_HIGHQUALITY 0x0001      /*  High quality imaging mode */
#define V4L2_CAP_TIMEPERFRAME 0x1000      /*  timeperframe field is supported */

00454 struct v4l2_outputparm
{
      __u32          capability;     /*  Supported modes */
      __u32          outputmode;     /*  Current mode */
      struct v4l2_fract  timeperframe; /*  Time per frame in seconds */
      __u32          extendedmode; /*  Driver-specific extensions */
      __u32              writebuffers; /*  # of buffers for write */
      __u32          reserved[4];
};

/*
 *    I N P U T   I M A G E   C R O P P I N G
 */

00468 struct v4l2_cropcap {
      enum v4l2_buf_type      type; 
        struct v4l2_rect        bounds;
        struct v4l2_rect        defrect;
        struct v4l2_fract       pixelaspect;
};

00475 struct v4l2_crop {
      enum v4l2_buf_type      type;
      struct v4l2_rect        c;
};

/*
 *      A N A L O G   V I D E O   S T A N D A R D
 */

typedef __u64 v4l2_std_id;

/* one bit for each */
#define V4L2_STD_PAL_B          ((v4l2_std_id)0x00000001)
#define V4L2_STD_PAL_B1         ((v4l2_std_id)0x00000002)
#define V4L2_STD_PAL_G          ((v4l2_std_id)0x00000004)
#define V4L2_STD_PAL_H          ((v4l2_std_id)0x00000008)
#define V4L2_STD_PAL_I          ((v4l2_std_id)0x00000010)
#define V4L2_STD_PAL_D          ((v4l2_std_id)0x00000020)
#define V4L2_STD_PAL_D1         ((v4l2_std_id)0x00000040)
#define V4L2_STD_PAL_K          ((v4l2_std_id)0x00000080)

#define V4L2_STD_PAL_M          ((v4l2_std_id)0x00000100)
#define V4L2_STD_PAL_N          ((v4l2_std_id)0x00000200)
#define V4L2_STD_PAL_Nc         ((v4l2_std_id)0x00000400)
#define V4L2_STD_PAL_60         ((v4l2_std_id)0x00000800)

#define V4L2_STD_NTSC_M         ((v4l2_std_id)0x00001000)
#define V4L2_STD_NTSC_M_JP      ((v4l2_std_id)0x00002000)

#define V4L2_STD_SECAM_B        ((v4l2_std_id)0x00010000)
#define V4L2_STD_SECAM_D        ((v4l2_std_id)0x00020000)
#define V4L2_STD_SECAM_G        ((v4l2_std_id)0x00040000)
#define V4L2_STD_SECAM_H        ((v4l2_std_id)0x00080000)
#define V4L2_STD_SECAM_K        ((v4l2_std_id)0x00100000)
#define V4L2_STD_SECAM_K1       ((v4l2_std_id)0x00200000)
#define V4L2_STD_SECAM_L        ((v4l2_std_id)0x00400000)

/* ATSC/HDTV */
#define V4L2_STD_ATSC_8_VSB     ((v4l2_std_id)0x01000000)
#define V4L2_STD_ATSC_16_VSB    ((v4l2_std_id)0x02000000)

/* some common needed stuff */
#define V4L2_STD_PAL_BG       (V4L2_STD_PAL_B         |\
                         V4L2_STD_PAL_B1  |\
                         V4L2_STD_PAL_G)
#define V4L2_STD_PAL_DK       (V4L2_STD_PAL_D         |\
                         V4L2_STD_PAL_D1  |\
                         V4L2_STD_PAL_K)
#define V4L2_STD_PAL          (V4L2_STD_PAL_BG  |\
                         V4L2_STD_PAL_DK  |\
                         V4L2_STD_PAL_H         |\
                         V4L2_STD_PAL_I)
#define V4L2_STD_NTSC           (V4L2_STD_NTSC_M      |\
                         V4L2_STD_NTSC_M_JP)
#define V4L2_STD_SECAM        (V4L2_STD_SECAM_B |\
                         V4L2_STD_SECAM_D |\
                         V4L2_STD_SECAM_G |\
                         V4L2_STD_SECAM_H |\
                         V4L2_STD_SECAM_K |\
                         V4L2_STD_SECAM_K1      |\
                         V4L2_STD_SECAM_L)

#define V4L2_STD_525_60       (V4L2_STD_PAL_M         |\
                         V4L2_STD_PAL_60  |\
                         V4L2_STD_NTSC)
#define V4L2_STD_625_50       (V4L2_STD_PAL           |\
                         V4L2_STD_PAL_N         |\
                         V4L2_STD_PAL_Nc  |\
                         V4L2_STD_SECAM)

#define V4L2_STD_UNKNOWN        0
#define V4L2_STD_ALL            (V4L2_STD_525_60      |\
                         V4L2_STD_625_50)

00549 struct v4l2_standard
{
      __u32                  index;
      v4l2_std_id          id;
      __u8             name[24];
      struct v4l2_fract    frameperiod; /* Frames, not fields */
      __u32            framelines;
      __u32            reserved[4];
};


/*
 *    V I D E O   I N P U T S
 */
00563 struct v4l2_input
{
      __u32      index;       /*  Which input */
      __u8       name[32];            /*  Label */
      __u32      type;        /*  Type of input */
      __u32      audioset;            /*  Associated audios (bitfield) */
      __u32        tuner;             /*  Associated tuner */
      v4l2_std_id  std;
      __u32      status;
      __u32      reserved[4];
};
/*  Values for the 'type' field */
#define V4L2_INPUT_TYPE_TUNER       1
#define V4L2_INPUT_TYPE_CAMERA            2

/* field 'status' - general */
#define V4L2_IN_ST_NO_POWER    0x00000001  /* Attached device is off */
#define V4L2_IN_ST_NO_SIGNAL   0x00000002
#define V4L2_IN_ST_NO_COLOR    0x00000004

/* field 'status' - analog */
#define V4L2_IN_ST_NO_H_LOCK   0x00000100  /* No horizontal sync lock */
#define V4L2_IN_ST_COLOR_KILL  0x00000200  /* Color killer is active */

/* field 'status' - digital */
#define V4L2_IN_ST_NO_SYNC     0x00010000  /* No synchronization lock */
#define V4L2_IN_ST_NO_EQU      0x00020000  /* No equalizer lock */
#define V4L2_IN_ST_NO_CARRIER  0x00040000  /* Carrier recovery failed */

/* field 'status' - VCR and set-top box */
#define V4L2_IN_ST_MACROVISION 0x01000000  /* Macrovision detected */
#define V4L2_IN_ST_NO_ACCESS   0x02000000  /* Conditional access denied */
#define V4L2_IN_ST_VTR         0x04000000  /* VTR time constant */

/*
 *    V I D E O   O U T P U T S
 */
00600 struct v4l2_output
{
      __u32      index;       /*  Which output */
      __u8       name[32];            /*  Label */
      __u32      type;        /*  Type of output */
      __u32      audioset;            /*  Associated audios (bitfield) */
      __u32      modulator;         /*  Associated modulator */
      v4l2_std_id  std;
      __u32      reserved[4];
};
/*  Values for the 'type' field */
#define V4L2_OUTPUT_TYPE_MODULATOR        1
#define V4L2_OUTPUT_TYPE_ANALOG                 2
#define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3

/*
 *    C O N T R O L S
 */
00618 struct v4l2_control
{
      __u32            id;
      __s32            value;
};

/*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
00625 struct v4l2_queryctrl
{
      __u32              id;
      enum v4l2_ctrl_type  type;
      __u8             name[32];    /* Whatever */
      __s32            minimum;     /* Note signedness */
      __s32            maximum;
      __s32              step;
      __s32            default_value;
      __u32                flags;
      __u32            reserved[2];
};

/*  Used in the VIDIOC_QUERYMENU ioctl for querying menu items */
00639 struct v4l2_querymenu
{
      __u32       id;
      __u32       index;
      __u8        name[32];   /* Whatever */
      __u32       reserved;
};

/*  Control flags  */
#define V4L2_CTRL_FLAG_DISABLED           0x0001
#define V4L2_CTRL_FLAG_GRABBED            0x0002

/*  Control IDs defined by V4L2 */
#define V4L2_CID_BASE               0x00980900
/*  IDs reserved for driver specific controls */
#define V4L2_CID_PRIVATE_BASE       0x08000000

#define V4L2_CID_BRIGHTNESS         (V4L2_CID_BASE+0)
#define V4L2_CID_CONTRAST           (V4L2_CID_BASE+1)
#define V4L2_CID_SATURATION         (V4L2_CID_BASE+2)
#define V4L2_CID_HUE                (V4L2_CID_BASE+3)
#define V4L2_CID_AUDIO_VOLUME       (V4L2_CID_BASE+5)
#define V4L2_CID_AUDIO_BALANCE            (V4L2_CID_BASE+6)
#define V4L2_CID_AUDIO_BASS         (V4L2_CID_BASE+7)
#define V4L2_CID_AUDIO_TREBLE       (V4L2_CID_BASE+8)
#define V4L2_CID_AUDIO_MUTE         (V4L2_CID_BASE+9)
#define V4L2_CID_AUDIO_LOUDNESS           (V4L2_CID_BASE+10)
#define V4L2_CID_BLACK_LEVEL        (V4L2_CID_BASE+11)
#define V4L2_CID_AUTO_WHITE_BALANCE (V4L2_CID_BASE+12)
#define V4L2_CID_DO_WHITE_BALANCE   (V4L2_CID_BASE+13)
#define V4L2_CID_RED_BALANCE        (V4L2_CID_BASE+14)
#define V4L2_CID_BLUE_BALANCE       (V4L2_CID_BASE+15)
#define V4L2_CID_GAMMA              (V4L2_CID_BASE+16)
#define V4L2_CID_WHITENESS          (V4L2_CID_GAMMA) /* ? Not sure */
#define V4L2_CID_EXPOSURE           (V4L2_CID_BASE+17)
#define V4L2_CID_AUTOGAIN           (V4L2_CID_BASE+18)
#define V4L2_CID_GAIN               (V4L2_CID_BASE+19)
#define V4L2_CID_HFLIP              (V4L2_CID_BASE+20)
#define V4L2_CID_VFLIP              (V4L2_CID_BASE+21)
#define V4L2_CID_HCENTER            (V4L2_CID_BASE+22)
#define V4L2_CID_VCENTER            (V4L2_CID_BASE+23)
#define V4L2_CID_LASTP1             (V4L2_CID_BASE+24) /* last CID + 1 */

/*
 *    T U N I N G
 */
00685 struct v4l2_tuner
{
      __u32                   index;
      __u8              name[32];
      enum v4l2_tuner_type    type;
      __u32             capability;
      __u32             rangelow;
      __u32             rangehigh;
      __u32             rxsubchans;
      __u32             audmode;
      __s32             signal;
      __s32             afc;
      __u32             reserved[4];
};

00700 struct v4l2_modulator
{
      __u32             index;
      __u8              name[32];
      __u32             capability;
      __u32             rangelow;
      __u32             rangehigh;
      __u32             txsubchans;
      __u32             reserved[4];
};

/*  Flags for the 'capability' field */
#define V4L2_TUNER_CAP_LOW          0x0001
#define V4L2_TUNER_CAP_NORM         0x0002
#define V4L2_TUNER_CAP_STEREO       0x0010
#define V4L2_TUNER_CAP_LANG2        0x0020
#define V4L2_TUNER_CAP_SAP          0x0020
#define V4L2_TUNER_CAP_LANG1        0x0040

/*  Flags for the 'rxsubchans' field */
#define V4L2_TUNER_SUB_MONO         0x0001
#define V4L2_TUNER_SUB_STEREO       0x0002
#define V4L2_TUNER_SUB_LANG2        0x0004
#define V4L2_TUNER_SUB_SAP          0x0004
#define V4L2_TUNER_SUB_LANG1        0x0008

/*  Values for the 'audmode' field */
#define V4L2_TUNER_MODE_MONO        0x0000
#define V4L2_TUNER_MODE_STEREO            0x0001
#define V4L2_TUNER_MODE_LANG2       0x0002
#define V4L2_TUNER_MODE_SAP         0x0002
#define V4L2_TUNER_MODE_LANG1       0x0003

00733 struct v4l2_frequency
{
      __u32               tuner;
      enum v4l2_tuner_type  type;
        __u32                   frequency;
      __u32               reserved[8];
};

/*
 *    A U D I O
 */
00744 struct v4l2_audio
{
      __u32 index;
      __u8  name[32];
      __u32 capability;
      __u32 mode;
      __u32 reserved[2];
};
/*  Flags for the 'capability' field */
#define V4L2_AUDCAP_STEREO          0x00001
#define V4L2_AUDCAP_AVL             0x00002

/*  Flags for the 'mode' field */
#define V4L2_AUDMODE_AVL            0x00001

00759 struct v4l2_audioout
{
      __u32 index;
      __u8  name[32];
      __u32 capability;
      __u32 mode;
      __u32 reserved[2];
};

/*
 *    D A T A   S E R V I C E S   ( V B I )
 *
 *    Data services API by Michael Schimek
 */

00774 struct v4l2_vbi_format
{
      __u32 sampling_rate;          /* in 1 Hz */
      __u32 offset;
      __u32 samples_per_line;
      __u32 sample_format;          /* V4L2_PIX_FMT_* */
      __s32 start[2];
      __u32 count[2];
      __u32 flags;                  /* V4L2_VBI_* */
      __u32 reserved[2];            /* must be zero */
};

/*  VBI flags  */
#define V4L2_VBI_UNSYNC       (1<< 0)
#define V4L2_VBI_INTERLACED   (1<< 1)


/*
 *    A G G R E G A T E   S T R U C T U R E S
 */

/*    Stream data format
 */
00797 struct v4l2_format
{
      enum v4l2_buf_type type;
      union
      {
            struct v4l2_pix_format  pix;  // V4L2_BUF_TYPE_VIDEO_CAPTURE
            struct v4l2_window      win;  // V4L2_BUF_TYPE_VIDEO_OVERLAY
            struct v4l2_vbi_format  vbi;  // V4L2_BUF_TYPE_VBI_CAPTURE
            __u8  raw_data[200];        // user-defined
      } fmt;
};


/*    Stream type-dependent parameters
 */
00812 struct v4l2_streamparm
{
      enum v4l2_buf_type type;
      union
      {
            struct v4l2_captureparm capture;
            struct v4l2_outputparm  output;
            __u8  raw_data[200];  /* user-defined */
      } parm;
};



/*
 *    I O C T L   C O D E S   F O R   V I D E O   D E V I C E S
 *
 */
#define VIDIOC_QUERYCAP       _IOR  ('V',  0, struct v4l2_capability)
#define VIDIOC_RESERVED       _IO   ('V',  1)
#define VIDIOC_ENUM_FMT         _IOWR ('V',  2, struct v4l2_fmtdesc)
#define VIDIOC_G_FMT          _IOWR ('V',  4, struct v4l2_format)
#define VIDIOC_S_FMT          _IOWR ('V',  5, struct v4l2_format)
#if 0
#define VIDIOC_G_COMP         _IOR  ('V',  6, struct v4l2_compression)
#define VIDIOC_S_COMP         _IOW  ('V',  7, struct v4l2_compression)
#endif
#define VIDIOC_REQBUFS        _IOWR ('V',  8, struct v4l2_requestbuffers)
#define VIDIOC_QUERYBUF       _IOWR ('V',  9, struct v4l2_buffer)
#define VIDIOC_G_FBUF         _IOR  ('V', 10, struct v4l2_framebuffer)
#define VIDIOC_S_FBUF         _IOW  ('V', 11, struct v4l2_framebuffer)
#define VIDIOC_OVERLAY        _IOW  ('V', 14, int)
#define VIDIOC_QBUF           _IOWR ('V', 15, struct v4l2_buffer)
#define VIDIOC_DQBUF          _IOWR ('V', 17, struct v4l2_buffer)
#define VIDIOC_STREAMON       _IOW  ('V', 18, int)
#define VIDIOC_STREAMOFF      _IOW  ('V', 19, int)
#define VIDIOC_G_PARM         _IOWR ('V', 21, struct v4l2_streamparm)
#define VIDIOC_S_PARM         _IOWR ('V', 22, struct v4l2_streamparm)
#define VIDIOC_G_STD          _IOR  ('V', 23, v4l2_std_id)
#define VIDIOC_S_STD          _IOW  ('V', 24, v4l2_std_id)
#define VIDIOC_ENUMSTD        _IOWR ('V', 25, struct v4l2_standard)
#define VIDIOC_ENUMINPUT      _IOWR ('V', 26, struct v4l2_input)
#define VIDIOC_G_CTRL         _IOWR ('V', 27, struct v4l2_control)
#define VIDIOC_S_CTRL         _IOWR ('V', 28, struct v4l2_control)
#define VIDIOC_G_TUNER        _IOWR ('V', 29, struct v4l2_tuner)
#define VIDIOC_S_TUNER        _IOW  ('V', 30, struct v4l2_tuner)
#define VIDIOC_G_AUDIO        _IOR  ('V', 33, struct v4l2_audio)
#define VIDIOC_S_AUDIO        _IOW  ('V', 34, struct v4l2_audio)
#define VIDIOC_QUERYCTRL      _IOWR ('V', 36, struct v4l2_queryctrl)
#define VIDIOC_QUERYMENU      _IOWR ('V', 37, struct v4l2_querymenu)
#define VIDIOC_G_INPUT        _IOR  ('V', 38, int)
#define VIDIOC_S_INPUT        _IOWR ('V', 39, int)
#define VIDIOC_G_OUTPUT       _IOR  ('V', 46, int)
#define VIDIOC_S_OUTPUT       _IOWR ('V', 47, int)
#define VIDIOC_ENUMOUTPUT     _IOWR ('V', 48, struct v4l2_output)
#define VIDIOC_G_AUDOUT       _IOR  ('V', 49, struct v4l2_audioout)
#define VIDIOC_S_AUDOUT       _IOW  ('V', 50, struct v4l2_audioout)
#define VIDIOC_G_MODULATOR    _IOWR ('V', 54, struct v4l2_modulator)
#define VIDIOC_S_MODULATOR    _IOW  ('V', 55, struct v4l2_modulator)
#define VIDIOC_G_FREQUENCY    _IOWR ('V', 56, struct v4l2_frequency)
#define VIDIOC_S_FREQUENCY    _IOW  ('V', 57, struct v4l2_frequency)
#define VIDIOC_CROPCAP        _IOWR ('V', 58, struct v4l2_cropcap)
#define VIDIOC_G_CROP         _IOWR ('V', 59, struct v4l2_crop)
#define VIDIOC_S_CROP         _IOW  ('V', 60, struct v4l2_crop)
#define VIDIOC_G_JPEGCOMP     _IOR  ('V', 61, struct v4l2_jpegcompression)
#define VIDIOC_S_JPEGCOMP     _IOW  ('V', 62, struct v4l2_jpegcompression)
#define VIDIOC_QUERYSTD       _IOR  ('V', 63, v4l2_std_id)
#define VIDIOC_TRY_FMT        _IOWR ('V', 64, struct v4l2_format)
#define VIDIOC_ENUMAUDIO      _IOWR ('V', 65, struct v4l2_audio)
#define VIDIOC_ENUMAUDOUT     _IOWR ('V', 66, struct v4l2_audioout)
#define VIDIOC_G_PRIORITY       _IOR  ('V', 67, enum v4l2_priority)
#define VIDIOC_S_PRIORITY       _IOW  ('V', 68, enum v4l2_priority)

/* for compatibility, will go away some day */
#define VIDIOC_OVERLAY_OLD          _IOWR ('V', 14, int)
#define VIDIOC_S_PARM_OLD           _IOW  ('V', 22, struct v4l2_streamparm)
#define VIDIOC_S_CTRL_OLD           _IOW  ('V', 28, struct v4l2_control)
#define VIDIOC_G_AUDIO_OLD          _IOWR ('V', 33, struct v4l2_audio)
#define VIDIOC_G_AUDOUT_OLD         _IOWR ('V', 49, struct v4l2_audioout)
#define VIDIOC_CROPCAP_OLD          _IOR  ('V', 58, struct v4l2_cropcap)

#define BASE_VIDIOC_PRIVATE   192         /* 192-255 are private */


#ifdef __KERNEL__
/*
 *
 *    V 4 L 2   D R I V E R   H E L P E R   A P I
 *
 *    Some commonly needed functions for drivers (v4l2-common.o module)
 */
#include <linux/fs.h>

/*  Video standard functions  */
extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs);
extern int v4l2_video_std_construct(struct v4l2_standard *vs,
                            int id, char *name);

/* prority handling */
struct v4l2_prio_state {
      atomic_t prios[4];
};
int v4l2_prio_init(struct v4l2_prio_state *global);
int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
                 enum v4l2_priority new);
int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);
int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local);
enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global);
int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local);

/* names for fancy debug output */
extern char *v4l2_field_names[];
extern char *v4l2_type_names[];
extern char *v4l2_ioctl_names[];

/*  Compatibility layer interface  --  v4l1-compat module */
typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,
                     unsigned int cmd, void *arg);
int v4l_compat_translate_ioctl(struct inode *inode, struct file *file,
                         int cmd, void *arg, v4l2_kioctl driver_ioctl);

#endif /* __KERNEL__ */
#endif /* __LINUX_VIDEODEV2_H */

/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */

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