videodev2.h

vlc源码

#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)

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
 */
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
 */
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
 */
struct v4l2_control
{
    __u32             id;
    __s32             value;
};

/*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
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 */
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
 */
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];
};

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

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

/*
 *    A U D I O
 */
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

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
 */

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
 */
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
 */
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        _IOWR ('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        _IOW  ('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        _IOW  ('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        _IOWR ('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        _IOWR ('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        _IOR  ('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 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);

/*  Compatibility layer interface  */
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);

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

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

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