include/linux/videodev2.h

   1 #ifndef __LINUX_VIDEODEV2_H
   2 #define __LINUX_VIDEODEV2_H
   3 /*
   4  *      Video for Linux Two
   5  *
   6  *      Header file for v4l or V4L2 drivers and applications, for
   7  *      Linux kernels 2.2.x or 2.4.x.
   8  *
   9  *      See http://bytesex.org/v4l/ for API specs and other
  10  *      v4l2 documentation.
  11  *
  12  *      Author: Bill Dirks <bdirks@pacbell.net>
  13  *              Justin Schoeman
  14  *              et al.
  15  */
  16 #ifdef __KERNEL__
  17 #include <linux/time.h> /* need struct timeval */
  18 #endif
  19 #include <linux/compiler.h> /* need __user */
  20
  21 /*
  22  *      M I S C E L L A N E O U S
  23  */
  24
  25 /*  Four-character-code (FOURCC) */
  26 #define v4l2_fourcc(a,b,c,d)\
  27         (((__u32)(a)<<0)|((__u32)(b)<<8)|((__u32)(c)<<16)|((__u32)(d)<<24))
  28
  29 /*
  30  *      E N U M S
  31  */
  32 enum v4l2_field {
  33         V4L2_FIELD_ANY        = 0, /* driver can choose from none,
  34                                       top, bottom, interlaced
  35                                       depending on whatever it thinks
  36                                       is approximate ... */
  37         V4L2_FIELD_NONE       = 1, /* this device has no fields ... */
  38         V4L2_FIELD_TOP        = 2, /* top field only */
  39         V4L2_FIELD_BOTTOM     = 3, /* bottom field only */
  40         V4L2_FIELD_INTERLACED = 4, /* both fields interlaced */
  41         V4L2_FIELD_SEQ_TB     = 5, /* both fields sequential into one
  42                                       buffer, top-bottom order */
  43         V4L2_FIELD_SEQ_BT     = 6, /* same as above + bottom-top order */
  44         V4L2_FIELD_ALTERNATE  = 7, /* both fields alternating into
  45                                       separate buffers */
  46 };
  47 #define V4L2_FIELD_HAS_TOP(field)       \
  48         ((field) == V4L2_FIELD_TOP      ||\
  49          (field) == V4L2_FIELD_INTERLACED ||\
  50          (field) == V4L2_FIELD_SEQ_TB   ||\
  51          (field) == V4L2_FIELD_SEQ_BT)
  52 #define V4L2_FIELD_HAS_BOTTOM(field)    \
  53         ((field) == V4L2_FIELD_BOTTOM   ||\
  54          (field) == V4L2_FIELD_INTERLACED ||\
  55          (field) == V4L2_FIELD_SEQ_TB   ||\
  56          (field) == V4L2_FIELD_SEQ_BT)
  57 #define V4L2_FIELD_HAS_BOTH(field)      \
  58         ((field) == V4L2_FIELD_INTERLACED ||\
  59          (field) == V4L2_FIELD_SEQ_TB   ||\
  60          (field) == V4L2_FIELD_SEQ_BT)
  61
  62 enum v4l2_buf_type {
  63         V4L2_BUF_TYPE_VIDEO_CAPTURE  = 1,
  64         V4L2_BUF_TYPE_VIDEO_OUTPUT   = 2,
  65         V4L2_BUF_TYPE_VIDEO_OVERLAY  = 3,
  66         V4L2_BUF_TYPE_VBI_CAPTURE    = 4,
  67         V4L2_BUF_TYPE_VBI_OUTPUT     = 5,
  68         V4L2_BUF_TYPE_PRIVATE        = 0x80,
  69 };
  70
  71 enum v4l2_ctrl_type {
  72         V4L2_CTRL_TYPE_INTEGER       = 1,
  73         V4L2_CTRL_TYPE_BOOLEAN       = 2,
  74         V4L2_CTRL_TYPE_MENU          = 3,
  75         V4L2_CTRL_TYPE_BUTTON        = 4,
  76 };
  77
  78 enum v4l2_tuner_type {
  79         V4L2_TUNER_RADIO             = 1,
  80         V4L2_TUNER_ANALOG_TV         = 2,
  81         V4L2_TUNER_DIGITAL_TV        = 3,
  82 };
  83
  84 enum v4l2_memory {
  85         V4L2_MEMORY_MMAP             = 1,
  86         V4L2_MEMORY_USERPTR          = 2,
  87         V4L2_MEMORY_OVERLAY          = 3,
  88 };
  89
  90 /* see also http://vektor.theorem.ca/graphics/ycbcr/ */
  91 enum v4l2_colorspace {
  92         /* ITU-R 601 -- broadcast NTSC/PAL */
  93         V4L2_COLORSPACE_SMPTE170M     = 1,
  94
  95         /* 1125-Line (US) HDTV */
  96         V4L2_COLORSPACE_SMPTE240M     = 2,
  97
  98         /* HD and modern captures. */
  99         V4L2_COLORSPACE_REC709        = 3,
 100
 101         /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */
 102         V4L2_COLORSPACE_BT878         = 4,
 103
 104         /* These should be useful.  Assume 601 extents. */
 105         V4L2_COLORSPACE_470_SYSTEM_M  = 5,
 106         V4L2_COLORSPACE_470_SYSTEM_BG = 6,
 107
 108         /* I know there will be cameras that send this.  So, this is
 109          * unspecified chromaticities and full 0-255 on each of the
 110          * Y'CbCr components
 111          */
 112         V4L2_COLORSPACE_JPEG          = 7,
 113
 114         /* For RGB colourspaces, this is probably a good start. */
 115         V4L2_COLORSPACE_SRGB          = 8,
 116 };
 117
 118 enum v4l2_priority {
 119         V4L2_PRIORITY_UNSET       = 0,  /* not initialized */
 120         V4L2_PRIORITY_BACKGROUND  = 1,
 121         V4L2_PRIORITY_INTERACTIVE = 2,
 122         V4L2_PRIORITY_RECORD      = 3,
 123         V4L2_PRIORITY_DEFAULT     = V4L2_PRIORITY_INTERACTIVE,
 124 };
 125
 126 struct v4l2_rect {
 127         __s32   left;
 128         __s32   top;
 129         __s32   width;
 130         __s32   height;
 131 };
 132
 133 struct v4l2_fract {
 134         __u32   numerator;
 135         __u32   denominator;
 136 };
 137
 138 /*
 139  *      D R I V E R   C A P A B I L I T I E S
 140  */
 141 struct v4l2_capability
 142 {
 143         __u8    driver[16];     /* i.e. "bttv" */
 144         __u8    card[32];       /* i.e. "Hauppauge WinTV" */
 145         __u8    bus_info[32];   /* "PCI:" + pci_name(pci_dev) */
 146         __u32   version;        /* should use KERNEL_VERSION() */
 147         __u32   capabilities;   /* Device capabilities */
 148         __u32   reserved[4];
 149 };
 150
 151 /* Values for 'capabilities' field */
 152 #define V4L2_CAP_VIDEO_CAPTURE  0x00000001  /* Is a video capture device */
 153 #define V4L2_CAP_VIDEO_OUTPUT   0x00000002  /* Is a video output device */
 154 #define V4L2_CAP_VIDEO_OVERLAY  0x00000004  /* Can do video overlay */
 155 #define V4L2_CAP_VBI_CAPTURE    0x00000010  /* Is a VBI capture device */
 156 #define V4L2_CAP_VBI_OUTPUT     0x00000020  /* Is a VBI output device */
 157 #define V4L2_CAP_RDS_CAPTURE    0x00000100  /* RDS data capture */
 158
 159 #define V4L2_CAP_TUNER          0x00010000  /* has a tuner */
 160 #define V4L2_CAP_AUDIO          0x00020000  /* has audio support */
 161 #define V4L2_CAP_RADIO          0x00040000  /* is a radio device */
 162
 163 #define V4L2_CAP_READWRITE      0x01000000  /* read/write systemcalls */
 164 #define V4L2_CAP_ASYNCIO        0x02000000  /* async I/O */
 165 #define V4L2_CAP_STREAMING      0x04000000  /* streaming I/O ioctls */
 166
 167 /*
 168  *      V I D E O   I M A G E   F O R M A T
 169  */
 170
 171 struct v4l2_pix_format
 172 {
 173         __u32                   width;
 174         __u32                   height;
 175         __u32                   pixelformat;
 176         enum v4l2_field         field;
 177         __u32                   bytesperline;   /* for padding, zero if unused */
 178         __u32                   sizeimage;
 179         enum v4l2_colorspace    colorspace;
 180         __u32                   priv;           /* private data, depends on pixelformat */
 181 };
 182
 183 /*           Pixel format    FOURCC                  depth  Description   */
 184 #define V4L2_PIX_FMT_RGB332  v4l2_fourcc('R','G','B','1') /*  8  RGB-3-3-2     */
 185 #define V4L2_PIX_FMT_RGB555  v4l2_fourcc('R','G','B','O') /* 16  RGB-5-5-5     */
 186 #define V4L2_PIX_FMT_RGB565  v4l2_fourcc('R','G','B','P') /* 16  RGB-5-6-5     */
 187 #define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R','G','B','Q') /* 16  RGB-5-5-5 BE  */
 188 #define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R','G','B','R') /* 16  RGB-5-6-5 BE  */
 189 #define V4L2_PIX_FMT_BGR24   v4l2_fourcc('B','G','R','3') /* 24  BGR-8-8-8     */
 190 #define V4L2_PIX_FMT_RGB24   v4l2_fourcc('R','G','B','3') /* 24  RGB-8-8-8     */
 191 #define V4L2_PIX_FMT_BGR32   v4l2_fourcc('B','G','R','4') /* 32  BGR-8-8-8-8   */
 192 #define V4L2_PIX_FMT_RGB32   v4l2_fourcc('R','G','B','4') /* 32  RGB-8-8-8-8   */
 193 #define V4L2_PIX_FMT_GREY    v4l2_fourcc('G','R','E','Y') /*  8  Greyscale     */
 194 #define V4L2_PIX_FMT_YVU410  v4l2_fourcc('Y','V','U','9') /*  9  YVU 4:1:0     */
 195 #define V4L2_PIX_FMT_YVU420  v4l2_fourcc('Y','V','1','2') /* 12  YVU 4:2:0     */
 196 #define V4L2_PIX_FMT_YUYV    v4l2_fourcc('Y','U','Y','V') /* 16  YUV 4:2:2     */
 197 #define V4L2_PIX_FMT_UYVY    v4l2_fourcc('U','Y','V','Y') /* 16  YUV 4:2:2     */
 198 #define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4','2','2','P') /* 16  YVU422 planar */
 199 #define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4','1','1','P') /* 16  YVU411 planar */
 200 #define V4L2_PIX_FMT_Y41P    v4l2_fourcc('Y','4','1','P') /* 12  YUV 4:1:1     */
 201
 202 /* two planes -- one Y, one Cr + Cb interleaved  */
 203 #define V4L2_PIX_FMT_NV12    v4l2_fourcc('N','V','1','2') /* 12  Y/CbCr 4:2:0  */
 204 #define V4L2_PIX_FMT_NV21    v4l2_fourcc('N','V','2','1') /* 12  Y/CrCb 4:2:0  */
 205
 206 /*  The following formats are not defined in the V4L2 specification */
 207 #define V4L2_PIX_FMT_YUV410  v4l2_fourcc('Y','U','V','9') /*  9  YUV 4:1:0     */
 208 #define V4L2_PIX_FMT_YUV420  v4l2_fourcc('Y','U','1','2') /* 12  YUV 4:2:0     */
 209 #define V4L2_PIX_FMT_YYUV    v4l2_fourcc('Y','Y','U','V') /* 16  YUV 4:2:2     */
 210 #define V4L2_PIX_FMT_HI240   v4l2_fourcc('H','I','2','4') /*  8  8-bit color   */
 211
 212 /* see http://www.siliconimaging.com/RGB%20Bayer.htm */
 213 #define V4L2_PIX_FMT_SBGGR8  v4l2_fourcc('B','A','8','1') /*  8  BGBG.. GRGR.. */
 214
 215 /* compressed formats */
 216 #define V4L2_PIX_FMT_MJPEG    v4l2_fourcc('M','J','P','G') /* Motion-JPEG   */
 217 #define V4L2_PIX_FMT_JPEG     v4l2_fourcc('J','P','E','G') /* JFIF JPEG     */
 218 #define V4L2_PIX_FMT_DV       v4l2_fourcc('d','v','s','d') /* 1394          */
 219 #define V4L2_PIX_FMT_MPEG     v4l2_fourcc('M','P','E','G') /* MPEG          */
 220
 221 /*  Vendor-specific formats   */
 222 #define V4L2_PIX_FMT_WNVA     v4l2_fourcc('W','N','V','A') /* Winnov hw compress */
 223 #define V4L2_PIX_FMT_SN9C10X  v4l2_fourcc('S','9','1','0') /* SN9C10x compression */
 224 #define V4L2_PIX_FMT_PWC1     v4l2_fourcc('P','W','C','1') /* pwc older webcam */
 225 #define V4L2_PIX_FMT_PWC2     v4l2_fourcc('P','W','C','2') /* pwc newer webcam */
 226
 227 /*
 228  *      F O R M A T   E N U M E R A T I O N
 229  */
 230 struct v4l2_fmtdesc
 231 {
 232         __u32               index;             /* Format number      */
 233         enum v4l2_buf_type  type;              /* buffer type        */
 234         __u32               flags;
 235         __u8                description[32];   /* Description string */
 236         __u32               pixelformat;       /* Format fourcc      */
 237         __u32               reserved[4];
 238 };
 239
 240 #define V4L2_FMT_FLAG_COMPRESSED 0x0001
 241
 242
 243 /*
 244  *      T I M E C O D E
 245  */
 246 struct v4l2_timecode
 247 {
 248         __u32   type;
 249         __u32   flags;
 250         __u8    frames;
 251         __u8    seconds;
 252         __u8    minutes;
 253         __u8    hours;
 254         __u8    userbits[4];
 255 };
 256
 257 /*  Type  */
 258 #define V4L2_TC_TYPE_24FPS              1
 259 #define V4L2_TC_TYPE_25FPS              2
 260 #define V4L2_TC_TYPE_30FPS              3
 261 #define V4L2_TC_TYPE_50FPS              4
 262 #define V4L2_TC_TYPE_60FPS              5
 263
 264 /*  Flags  */
 265 #define V4L2_TC_FLAG_DROPFRAME          0x0001 /* "drop-frame" mode */
 266 #define V4L2_TC_FLAG_COLORFRAME         0x0002
 267 #define V4L2_TC_USERBITS_field          0x000C
 268 #define V4L2_TC_USERBITS_USERDEFINED    0x0000
 269 #define V4L2_TC_USERBITS_8BITCHARS      0x0008
 270 /* The above is based on SMPTE timecodes */
 271
 272
 273 /*
 274  *      M P E G   C O M P R E S S I O N   P A R A M E T E R S
 275  *
 276  *  ### WARNING: this is still work-in-progress right now, most likely
 277  *  ###          there will be some incompatible changes.
 278  *
 279  */
 280
 281
 282 enum v4l2_bitrate_mode {
 283         V4L2_BITRATE_NONE = 0,  /* not specified */
 284         V4L2_BITRATE_CBR,       /* constant bitrate */
 285         V4L2_BITRATE_VBR,       /* variable bitrate */
 286 };
 287 struct v4l2_bitrate {
 288         /* rates are specified in kbit/sec */
 289         enum v4l2_bitrate_mode  mode;
 290         __u32                   min;
 291         __u32                   target;  /* use this one for CBR */
 292         __u32                   max;
 293 };
 294
 295 enum v4l2_mpeg_streamtype {
 296         V4L2_MPEG_SS_1,         /* MPEG-1 system stream */
 297         V4L2_MPEG_PS_2,         /* MPEG-2 program stream */
 298         V4L2_MPEG_TS_2,         /* MPEG-2 transport stream */
 299         V4L2_MPEG_PS_DVD,       /* MPEG-2 program stream with DVD header fixups */
 300 };
 301 enum v4l2_mpeg_audiotype {
 302         V4L2_MPEG_AU_2_I,       /* MPEG-2 layer 1 */
 303         V4L2_MPEG_AU_2_II,      /* MPEG-2 layer 2 */
 304         V4L2_MPEG_AU_2_III,     /* MPEG-2 layer 3 */
 305         V4L2_MPEG_AC3,          /* AC3 */
 306         V4L2_MPEG_LPCM,         /* LPCM */
 307 };
 308 enum v4l2_mpeg_videotype {
 309         V4L2_MPEG_VI_1,         /* MPEG-1 */
 310         V4L2_MPEG_VI_2,         /* MPEG-2 */
 311 };
 312 enum v4l2_mpeg_aspectratio {
 313         V4L2_MPEG_ASPECT_SQUARE = 1,   /* square pixel */
 314         V4L2_MPEG_ASPECT_4_3    = 2,   /*  4 : 3       */
 315         V4L2_MPEG_ASPECT_16_9   = 3,   /* 16 : 9       */
 316         V4L2_MPEG_ASPECT_1_221  = 4,   /*  1 : 2,21    */
 317 };
 318
 319 struct v4l2_mpeg_compression {
 320         /* general */
 321         enum v4l2_mpeg_streamtype       st_type;
 322         struct v4l2_bitrate             st_bitrate;
 323
 324         /* transport streams */
 325         __u16                           ts_pid_pmt;
 326         __u16                           ts_pid_audio;
 327         __u16                           ts_pid_video;
 328         __u16                           ts_pid_pcr;
 329
 330         /* program stream */
 331         __u16                           ps_size;
 332         __u16                           reserved_1;    /* align */
 333
 334         /* audio */
 335         enum v4l2_mpeg_audiotype        au_type;
 336         struct v4l2_bitrate             au_bitrate;
 337         __u32                           au_sample_rate;
 338         __u8                            au_pesid;
 339         __u8                            reserved_2[3]; /* align */
 340
 341         /* video */
 342         enum v4l2_mpeg_videotype        vi_type;
 343         enum v4l2_mpeg_aspectratio      vi_aspect_ratio;
 344         struct v4l2_bitrate             vi_bitrate;
 345         __u32                           vi_frame_rate;
 346         __u16                           vi_frames_per_gop;
 347         __u16                           vi_bframes_count;
 348         __u8                            vi_pesid;
 349         __u8                            reserved_3[3]; /* align */
 350
 351         /* misc flags */
 352         __u32                           closed_gops:1;
 353         __u32                           pulldown:1;
 354         __u32                           reserved_4:30; /* align */
 355
 356         /* I don't expect the above being perfect yet ;) */
 357         __u32                           reserved_5[8];
 358 };
 359
 360 struct v4l2_jpegcompression
 361 {
 362         int quality;
 363
 364         int  APPn;              /* Number of APP segment to be written,
 365                                  * must be 0..15 */
 366         int  APP_len;           /* Length of data in JPEG APPn segment */
 367         char APP_data[60];      /* Data in the JPEG APPn segment. */
 368
 369         int  COM_len;           /* Length of data in JPEG COM segment */
 370         char COM_data[60];      /* Data in JPEG COM segment */
 371
 372         __u32 jpeg_markers;     /* Which markers should go into the JPEG
 373                                  * output. Unless you exactly know what
 374                                  * you do, leave them untouched.
 375                                  * Inluding less markers will make the
 376                                  * resulting code smaller, but there will
 377                                  * be fewer aplications which can read it.
 378                                  * The presence of the APP and COM marker
 379                                  * is influenced by APP_len and COM_len
 380                                  * ONLY, not by this property! */
 381
 382 #define V4L2_JPEG_MARKER_DHT (1<<3)    /* Define Huffman Tables */
 383 #define V4L2_JPEG_MARKER_DQT (1<<4)    /* Define Quantization Tables */
 384 #define V4L2_JPEG_MARKER_DRI (1<<5)    /* Define Restart Interval */
 385 #define V4L2_JPEG_MARKER_COM (1<<6)    /* Comment segment */
 386 #define V4L2_JPEG_MARKER_APP (1<<7)    /* App segment, driver will
 387                                         * allways use APP0 */
 388 };
 389
 390
 391 /*
 392  *      M E M O R Y - M A P P I N G   B U F F E R S
 393  */
 394 struct v4l2_requestbuffers
 395 {
 396         __u32                   count;
 397         enum v4l2_buf_type      type;
 398         enum v4l2_memory        memory;
 399         __u32                   reserved[2];
 400 };
 401
 402 struct v4l2_buffer
 403 {
 404         __u32                   index;
 405         enum v4l2_buf_type      type;
 406         __u32                   bytesused;
 407         __u32                   flags;
 408         enum v4l2_field         field;
 409         struct timeval          timestamp;
 410         struct v4l2_timecode    timecode;
 411         __u32                   sequence;
 412
 413         /* memory location */
 414         enum v4l2_memory        memory;
 415         union {
 416                 __u32           offset;
 417                 unsigned long   userptr;
 418         } m;
 419         __u32                   length;
 420         __u32                   input;
 421         __u32                   reserved;
 422 };
 423
 424 /*  Flags for 'flags' field */
 425 #define V4L2_BUF_FLAG_MAPPED    0x0001  /* Buffer is mapped (flag) */
 426 #define V4L2_BUF_FLAG_QUEUED    0x0002  /* Buffer is queued for processing */
 427 #define V4L2_BUF_FLAG_DONE      0x0004  /* Buffer is ready */
 428 #define V4L2_BUF_FLAG_KEYFRAME  0x0008  /* Image is a keyframe (I-frame) */
 429 #define V4L2_BUF_FLAG_PFRAME    0x0010  /* Image is a P-frame */
 430 #define V4L2_BUF_FLAG_BFRAME    0x0020  /* Image is a B-frame */
 431 #define V4L2_BUF_FLAG_TIMECODE  0x0100  /* timecode field is valid */
 432 #define V4L2_BUF_FLAG_INPUT     0x0200  /* input field is valid */
 433
 434 /*
 435  *      O V E R L A Y   P R E V I E W
 436  */
 437 struct v4l2_framebuffer
 438 {
 439         __u32                   capability;
 440         __u32                   flags;
 441 /* FIXME: in theory we should pass something like PCI device + memory
 442  * region + offset instead of some physical address */
 443         void*                   base;
 444         struct v4l2_pix_format  fmt;
 445 };
 446 /*  Flags for the 'capability' field. Read only */
 447 #define V4L2_FBUF_CAP_EXTERNOVERLAY     0x0001
 448 #define V4L2_FBUF_CAP_CHROMAKEY         0x0002
 449 #define V4L2_FBUF_CAP_LIST_CLIPPING     0x0004
 450 #define V4L2_FBUF_CAP_BITMAP_CLIPPING   0x0008
 451 /*  Flags for the 'flags' field. */
 452 #define V4L2_FBUF_FLAG_PRIMARY          0x0001
 453 #define V4L2_FBUF_FLAG_OVERLAY          0x0002
 454 #define V4L2_FBUF_FLAG_CHROMAKEY        0x0004
 455
 456 struct v4l2_clip
 457 {
 458         struct v4l2_rect        c;
 459         struct v4l2_clip        *next;
 460 };
 461
 462 struct v4l2_window
 463 {
 464         struct v4l2_rect        w;
 465         enum v4l2_field         field;
 466         __u32                   chromakey;
 467         struct v4l2_clip        __user *clips;
 468         __u32                   clipcount;
 469         void                    __user *bitmap;
 470 };
 471
 472
 473 /*
 474  *      C A P T U R E   P A R A M E T E R S
 475  */
 476 struct v4l2_captureparm
 477 {
 478         __u32              capability;    /*  Supported modes */
 479         __u32              capturemode;   /*  Current mode */
 480         struct v4l2_fract  timeperframe;  /*  Time per frame in .1us units */
 481         __u32              extendedmode;  /*  Driver-specific extensions */
 482         __u32              readbuffers;   /*  # of buffers for read */
 483         __u32              reserved[4];
 484 };
 485 /*  Flags for 'capability' and 'capturemode' fields */
 486 #define V4L2_MODE_HIGHQUALITY   0x0001  /*  High quality imaging mode */
 487 #define V4L2_CAP_TIMEPERFRAME   0x1000  /*  timeperframe field is supported */
 488
 489 struct v4l2_outputparm
 490 {
 491         __u32              capability;   /*  Supported modes */
 492         __u32              outputmode;   /*  Current mode */
 493         struct v4l2_fract  timeperframe; /*  Time per frame in seconds */
 494         __u32              extendedmode; /*  Driver-specific extensions */
 495         __u32              writebuffers; /*  # of buffers for write */
 496         __u32              reserved[4];
 497 };
 498
 499 /*
 500  *      I N P U T   I M A G E   C R O P P I N G
 501  */
 502
 503 struct v4l2_cropcap {
 504         enum v4l2_buf_type      type;
 505         struct v4l2_rect        bounds;
 506         struct v4l2_rect        defrect;
 507         struct v4l2_fract       pixelaspect;
 508 };
 509
 510 struct v4l2_crop {
 511         enum v4l2_buf_type      type;
 512         struct v4l2_rect        c;
 513 };
 514
 515 /*
 516  *      A N A L O G   V I D E O   S T A N D A R D
 517  */
 518
 519 typedef __u64 v4l2_std_id;
 520
 521 /* one bit for each */
 522 #define V4L2_STD_PAL_B          ((v4l2_std_id)0x00000001)
 523 #define V4L2_STD_PAL_B1         ((v4l2_std_id)0x00000002)
 524 #define V4L2_STD_PAL_G          ((v4l2_std_id)0x00000004)
 525 #define V4L2_STD_PAL_H          ((v4l2_std_id)0x00000008)
 526 #define V4L2_STD_PAL_I          ((v4l2_std_id)0x00000010)
 527 #define V4L2_STD_PAL_D          ((v4l2_std_id)0x00000020)
 528 #define V4L2_STD_PAL_D1         ((v4l2_std_id)0x00000040)
 529 #define V4L2_STD_PAL_K          ((v4l2_std_id)0x00000080)
 530
 531 #define V4L2_STD_PAL_M          ((v4l2_std_id)0x00000100)
 532 #define V4L2_STD_PAL_N          ((v4l2_std_id)0x00000200)
 533 #define V4L2_STD_PAL_Nc         ((v4l2_std_id)0x00000400)
 534 #define V4L2_STD_PAL_60         ((v4l2_std_id)0x00000800)
 535
 536 #define V4L2_STD_NTSC_M         ((v4l2_std_id)0x00001000)
 537 #define V4L2_STD_NTSC_M_JP      ((v4l2_std_id)0x00002000)
 538
 539 #define V4L2_STD_SECAM_B        ((v4l2_std_id)0x00010000)
 540 #define V4L2_STD_SECAM_D        ((v4l2_std_id)0x00020000)
 541 #define V4L2_STD_SECAM_G        ((v4l2_std_id)0x00040000)
 542 #define V4L2_STD_SECAM_H        ((v4l2_std_id)0x00080000)
 543 #define V4L2_STD_SECAM_K        ((v4l2_std_id)0x00100000)
 544 #define V4L2_STD_SECAM_K1       ((v4l2_std_id)0x00200000)
 545 #define V4L2_STD_SECAM_L        ((v4l2_std_id)0x00400000)
 546
 547 /* ATSC/HDTV */
 548 #define V4L2_STD_ATSC_8_VSB     ((v4l2_std_id)0x01000000)
 549 #define V4L2_STD_ATSC_16_VSB    ((v4l2_std_id)0x02000000)
 550
 551 /* some common needed stuff */
 552 #define V4L2_STD_PAL_BG         (V4L2_STD_PAL_B         |\
 553                                  V4L2_STD_PAL_B1        |\
 554                                  V4L2_STD_PAL_G)
 555 #define V4L2_STD_PAL_DK         (V4L2_STD_PAL_D         |\
 556                                  V4L2_STD_PAL_D1        |\
 557                                  V4L2_STD_PAL_K)
 558 #define V4L2_STD_PAL            (V4L2_STD_PAL_BG        |\
 559                                  V4L2_STD_PAL_DK        |\
 560                                  V4L2_STD_PAL_H         |\
 561                                  V4L2_STD_PAL_I)
 562 #define V4L2_STD_NTSC           (V4L2_STD_NTSC_M        |\
 563                                  V4L2_STD_NTSC_M_JP)
 564 #define V4L2_STD_SECAM_DK       (V4L2_STD_SECAM_D       |\
 565                                  V4L2_STD_SECAM_K       |\
 566                                  V4L2_STD_SECAM_K1)
 567 #define V4L2_STD_SECAM          (V4L2_STD_SECAM_B       |\
 568                                  V4L2_STD_SECAM_G       |\
 569                                  V4L2_STD_SECAM_H       |\
 570                                  V4L2_STD_SECAM_DK      |\
 571                                  V4L2_STD_SECAM_L)
 572
 573 #define V4L2_STD_525_60         (V4L2_STD_PAL_M         |\
 574                                  V4L2_STD_PAL_60        |\
 575                                  V4L2_STD_NTSC)
 576 #define V4L2_STD_625_50         (V4L2_STD_PAL           |\
 577                                  V4L2_STD_PAL_N         |\
 578                                  V4L2_STD_PAL_Nc        |\
 579                                  V4L2_STD_SECAM)
 580 #define V4L2_STD_ATSC           (V4L2_STD_ATSC_8_VSB    |\
 581                                  V4L2_STD_ATSC_16_VSB)
 582
 583 #define V4L2_STD_UNKNOWN        0
 584 #define V4L2_STD_ALL            (V4L2_STD_525_60        |\
 585                                  V4L2_STD_625_50)
 586
 587 struct v4l2_standard
 588 {
 589         __u32                index;
 590         v4l2_std_id          id;
 591         __u8                 name[24];
 592         struct v4l2_fract    frameperiod; /* Frames, not fields */
 593         __u32                framelines;
 594         __u32                reserved[4];
 595 };
 596
 597
 598 /*
 599  *      V I D E O   I N P U T S
 600  */
 601 struct v4l2_input
 602 {
 603         __u32        index;             /*  Which input */
 604         __u8         name[32];          /*  Label */
 605         __u32        type;              /*  Type of input */
 606         __u32        audioset;          /*  Associated audios (bitfield) */
 607         __u32        tuner;             /*  Associated tuner */
 608         v4l2_std_id  std;
 609         __u32        status;
 610         __u32        reserved[4];
 611 };
 612 /*  Values for the 'type' field */
 613 #define V4L2_INPUT_TYPE_TUNER           1
 614 #define V4L2_INPUT_TYPE_CAMERA          2
 615
 616 /* field 'status' - general */
 617 #define V4L2_IN_ST_NO_POWER    0x00000001  /* Attached device is off */
 618 #define V4L2_IN_ST_NO_SIGNAL   0x00000002
 619 #define V4L2_IN_ST_NO_COLOR    0x00000004
 620
 621 /* field 'status' - analog */
 622 #define V4L2_IN_ST_NO_H_LOCK   0x00000100  /* No horizontal sync lock */
 623 #define V4L2_IN_ST_COLOR_KILL  0x00000200  /* Color killer is active */
 624
 625 /* field 'status' - digital */
 626 #define V4L2_IN_ST_NO_SYNC     0x00010000  /* No synchronization lock */
 627 #define V4L2_IN_ST_NO_EQU      0x00020000  /* No equalizer lock */
 628 #define V4L2_IN_ST_NO_CARRIER  0x00040000  /* Carrier recovery failed */
 629
 630 /* field 'status' - VCR and set-top box */
 631 #define V4L2_IN_ST_MACROVISION 0x01000000  /* Macrovision detected */
 632 #define V4L2_IN_ST_NO_ACCESS   0x02000000  /* Conditional access denied */
 633 #define V4L2_IN_ST_VTR         0x04000000  /* VTR time constant */
 634
 635 /*
 636  *      V I D E O   O U T P U T S
 637  */
 638 struct v4l2_output
 639 {
 640         __u32        index;             /*  Which output */
 641         __u8         name[32];          /*  Label */
 642         __u32        type;              /*  Type of output */
 643         __u32        audioset;          /*  Associated audios (bitfield) */
 644         __u32        modulator;         /*  Associated modulator */
 645         v4l2_std_id  std;
 646         __u32        reserved[4];
 647 };
 648 /*  Values for the 'type' field */
 649 #define V4L2_OUTPUT_TYPE_MODULATOR              1
 650 #define V4L2_OUTPUT_TYPE_ANALOG                 2
 651 #define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY       3
 652
 653 /*
 654  *      C O N T R O L S
 655  */
 656 struct v4l2_control
 657 {
 658         __u32                id;
 659         __s32                value;
 660 };
 661
 662 /*  Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
 663 struct v4l2_queryctrl
 664 {
 665         __u32                id;
 666         enum v4l2_ctrl_type  type;
 667         __u8                 name[32];  /* Whatever */
 668         __s32                minimum;   /* Note signedness */
 669         __s32                maximum;
 670         __s32                step;
 671         __s32                default_value;
 672         __u32                flags;
 673         __u32                reserved[2];
 674 };
 675
 676 /*  Used in the VIDIOC_QUERYMENU ioctl for querying menu items */
 677 struct v4l2_querymenu
 678 {
 679         __u32           id;
 680         __u32           index;
 681         __u8            name[32];       /* Whatever */
 682         __u32           reserved;
 683 };
 684
 685 /*  Control flags  */
 686 #define V4L2_CTRL_FLAG_DISABLED         0x0001
 687 #define V4L2_CTRL_FLAG_GRABBED          0x0002
 688
 689 /*  Control IDs defined by V4L2 */
 690 #define V4L2_CID_BASE                   0x00980900
 691 /*  IDs reserved for driver specific controls */
 692 #define V4L2_CID_PRIVATE_BASE           0x08000000
 693
 694 #define V4L2_CID_BRIGHTNESS             (V4L2_CID_BASE+0)
 695 #define V4L2_CID_CONTRAST               (V4L2_CID_BASE+1)
 696 #define V4L2_CID_SATURATION             (V4L2_CID_BASE+2)
 697 #define V4L2_CID_HUE                    (V4L2_CID_BASE+3)
 698 #define V4L2_CID_AUDIO_VOLUME           (V4L2_CID_BASE+5)
 699 #define V4L2_CID_AUDIO_BALANCE          (V4L2_CID_BASE+6)
 700 #define V4L2_CID_AUDIO_BASS             (V4L2_CID_BASE+7)
 701 #define V4L2_CID_AUDIO_TREBLE           (V4L2_CID_BASE+8)
 702 #define V4L2_CID_AUDIO_MUTE             (V4L2_CID_BASE+9)
 703 #define V4L2_CID_AUDIO_LOUDNESS         (V4L2_CID_BASE+10)
 704 #define V4L2_CID_BLACK_LEVEL            (V4L2_CID_BASE+11)
 705 #define V4L2_CID_AUTO_WHITE_BALANCE     (V4L2_CID_BASE+12)
 706 #define V4L2_CID_DO_WHITE_BALANCE       (V4L2_CID_BASE+13)
 707 #define V4L2_CID_RED_BALANCE            (V4L2_CID_BASE+14)
 708 #define V4L2_CID_BLUE_BALANCE           (V4L2_CID_BASE+15)
 709 #define V4L2_CID_GAMMA                  (V4L2_CID_BASE+16)
 710 #define V4L2_CID_WHITENESS              (V4L2_CID_GAMMA) /* ? Not sure */
 711 #define V4L2_CID_EXPOSURE               (V4L2_CID_BASE+17)
 712 #define V4L2_CID_AUTOGAIN               (V4L2_CID_BASE+18)
 713 #define V4L2_CID_GAIN                   (V4L2_CID_BASE+19)
 714 #define V4L2_CID_HFLIP                  (V4L2_CID_BASE+20)
 715 #define V4L2_CID_VFLIP                  (V4L2_CID_BASE+21)
 716 #define V4L2_CID_HCENTER                (V4L2_CID_BASE+22)
 717 #define V4L2_CID_VCENTER                (V4L2_CID_BASE+23)
 718 #define V4L2_CID_LASTP1                 (V4L2_CID_BASE+24) /* last CID + 1 */
 719
 720 /*
 721  *      T U N I N G
 722  */
 723 struct v4l2_tuner
 724 {
 725         __u32                   index;
 726         __u8                    name[32];
 727         enum v4l2_tuner_type    type;
 728         __u32                   capability;
 729         __u32                   rangelow;
 730         __u32                   rangehigh;
 731         __u32                   rxsubchans;
 732         __u32                   audmode;
 733         __s32                   signal;
 734         __s32                   afc;
 735         __u32                   reserved[4];
 736 };
 737
 738 struct v4l2_modulator
 739 {
 740         __u32                   index;
 741         __u8                    name[32];
 742         __u32                   capability;
 743         __u32                   rangelow;
 744         __u32                   rangehigh;
 745         __u32                   txsubchans;
 746         __u32                   reserved[4];
 747 };
 748
 749 /*  Flags for the 'capability' field */
 750 #define V4L2_TUNER_CAP_LOW              0x0001
 751 #define V4L2_TUNER_CAP_NORM             0x0002
 752 #define V4L2_TUNER_CAP_STEREO           0x0010
 753 #define V4L2_TUNER_CAP_LANG2            0x0020
 754 #define V4L2_TUNER_CAP_SAP              0x0020
 755 #define V4L2_TUNER_CAP_LANG1            0x0040
 756
 757 /*  Flags for the 'rxsubchans' field */
 758 #define V4L2_TUNER_SUB_MONO             0x0001
 759 #define V4L2_TUNER_SUB_STEREO           0x0002
 760 #define V4L2_TUNER_SUB_LANG2            0x0004
 761 #define V4L2_TUNER_SUB_SAP              0x0004
 762 #define V4L2_TUNER_SUB_LANG1            0x0008
 763
 764 /*  Values for the 'audmode' field */
 765 #define V4L2_TUNER_MODE_MONO            0x0000
 766 #define V4L2_TUNER_MODE_STEREO          0x0001
 767 #define V4L2_TUNER_MODE_LANG2           0x0002
 768 #define V4L2_TUNER_MODE_SAP             0x0002
 769 #define V4L2_TUNER_MODE_LANG1           0x0003
 770
 771 struct v4l2_frequency
 772 {
 773         __u32                 tuner;
 774         enum v4l2_tuner_type  type;
 775         __u32                 frequency;
 776         __u32                 reserved[8];
 777 };
 778
 779 /*
 780  *      A U D I O
 781  */
 782 struct v4l2_audio
 783 {
 784         __u32   index;
 785         __u8    name[32];
 786         __u32   capability;
 787         __u32   mode;
 788         __u32   reserved[2];
 789 };
 790 /*  Flags for the 'capability' field */
 791 #define V4L2_AUDCAP_STEREO              0x00001
 792 #define V4L2_AUDCAP_AVL                 0x00002
 793
 794 /*  Flags for the 'mode' field */
 795 #define V4L2_AUDMODE_AVL                0x00001
 796
 797 struct v4l2_audioout
 798 {
 799         __u32   index;
 800         __u8    name[32];
 801         __u32   capability;
 802         __u32   mode;
 803         __u32   reserved[2];
 804 };
 805
 806 /*
 807  *      D A T A   S E R V I C E S   ( V B I )
 808  *
 809  *      Data services API by Michael Schimek
 810  */
 811
 812 struct v4l2_vbi_format
 813 {
 814         __u32   sampling_rate;          /* in 1 Hz */
 815         __u32   offset;
 816         __u32   samples_per_line;
 817         __u32   sample_format;          /* V4L2_PIX_FMT_* */
 818         __s32   start[2];
 819         __u32   count[2];
 820         __u32   flags;                  /* V4L2_VBI_* */
 821         __u32   reserved[2];            /* must be zero */
 822 };
 823
 824 /*  VBI flags  */
 825 #define V4L2_VBI_UNSYNC         (1<< 0)
 826 #define V4L2_VBI_INTERLACED     (1<< 1)
 827
 828
 829 /*
 830  *      A G G R E G A T E   S T R U C T U R E S
 831  */
 832
 833 /*      Stream data format
 834  */
 835 struct v4l2_format
 836 {
 837         enum v4l2_buf_type type;
 838         union
 839         {
 840                 struct v4l2_pix_format  pix;  // V4L2_BUF_TYPE_VIDEO_CAPTURE
 841                 struct v4l2_window      win;  // V4L2_BUF_TYPE_VIDEO_OVERLAY
 842                 struct v4l2_vbi_format  vbi;  // V4L2_BUF_TYPE_VBI_CAPTURE
 843                 __u8    raw_data[200];        // user-defined
 844         } fmt;
 845 };
 846
 847
 848 /*      Stream type-dependent parameters
 849  */
 850 struct v4l2_streamparm
 851 {
 852         enum v4l2_buf_type type;
 853         union
 854         {
 855                 struct v4l2_captureparm capture;
 856                 struct v4l2_outputparm  output;
 857                 __u8    raw_data[200];  /* user-defined */
 858         } parm;
 859 };
 860
 861
 862
 863 /*
 864  *      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
 865  *
 866  */
 867 #define VIDIOC_QUERYCAP         _IOR  ('V',  0, struct v4l2_capability)
 868 #define VIDIOC_RESERVED         _IO   ('V',  1)
 869 #define VIDIOC_ENUM_FMT         _IOWR ('V',  2, struct v4l2_fmtdesc)
 870 #define VIDIOC_G_FMT            _IOWR ('V',  4, struct v4l2_format)
 871 #define VIDIOC_S_FMT            _IOWR ('V',  5, struct v4l2_format)
 872 #define VIDIOC_G_MPEGCOMP       _IOR  ('V',  6, struct v4l2_mpeg_compression)
 873 #define VIDIOC_S_MPEGCOMP       _IOW  ('V',  7, struct v4l2_mpeg_compression)
 874 #define VIDIOC_REQBUFS          _IOWR ('V',  8, struct v4l2_requestbuffers)
 875 #define VIDIOC_QUERYBUF         _IOWR ('V',  9, struct v4l2_buffer)
 876 #define VIDIOC_G_FBUF           _IOR  ('V', 10, struct v4l2_framebuffer)
 877 #define VIDIOC_S_FBUF           _IOW  ('V', 11, struct v4l2_framebuffer)
 878 #define VIDIOC_OVERLAY          _IOW  ('V', 14, int)
 879 #define VIDIOC_QBUF             _IOWR ('V', 15, struct v4l2_buffer)
 880 #define VIDIOC_DQBUF            _IOWR ('V', 17, struct v4l2_buffer)
 881 #define VIDIOC_STREAMON         _IOW  ('V', 18, int)
 882 #define VIDIOC_STREAMOFF        _IOW  ('V', 19, int)
 883 #define VIDIOC_G_PARM           _IOWR ('V', 21, struct v4l2_streamparm)
 884 #define VIDIOC_S_PARM           _IOWR ('V', 22, struct v4l2_streamparm)
 885 #define VIDIOC_G_STD            _IOR  ('V', 23, v4l2_std_id)
 886 #define VIDIOC_S_STD            _IOW  ('V', 24, v4l2_std_id)
 887 #define VIDIOC_ENUMSTD          _IOWR ('V', 25, struct v4l2_standard)
 888 #define VIDIOC_ENUMINPUT        _IOWR ('V', 26, struct v4l2_input)
 889 #define VIDIOC_G_CTRL           _IOWR ('V', 27, struct v4l2_control)
 890 #define VIDIOC_S_CTRL           _IOWR ('V', 28, struct v4l2_control)
 891 #define VIDIOC_G_TUNER          _IOWR ('V', 29, struct v4l2_tuner)
 892 #define VIDIOC_S_TUNER          _IOW  ('V', 30, struct v4l2_tuner)
 893 #define VIDIOC_G_AUDIO          _IOR  ('V', 33, struct v4l2_audio)
 894 #define VIDIOC_S_AUDIO          _IOW  ('V', 34, struct v4l2_audio)
 895 #define VIDIOC_QUERYCTRL        _IOWR ('V', 36, struct v4l2_queryctrl)
 896 #define VIDIOC_QUERYMENU        _IOWR ('V', 37, struct v4l2_querymenu)
 897 #define VIDIOC_G_INPUT          _IOR  ('V', 38, int)
 898 #define VIDIOC_S_INPUT          _IOWR ('V', 39, int)
 899 #define VIDIOC_G_OUTPUT         _IOR  ('V', 46, int)
 900 #define VIDIOC_S_OUTPUT         _IOWR ('V', 47, int)
 901 #define VIDIOC_ENUMOUTPUT       _IOWR ('V', 48, struct v4l2_output)
 902 #define VIDIOC_G_AUDOUT         _IOR  ('V', 49, struct v4l2_audioout)
 903 #define VIDIOC_S_AUDOUT         _IOW  ('V', 50, struct v4l2_audioout)
 904 #define VIDIOC_G_MODULATOR      _IOWR ('V', 54, struct v4l2_modulator)
 905 #define VIDIOC_S_MODULATOR      _IOW  ('V', 55, struct v4l2_modulator)
 906 #define VIDIOC_G_FREQUENCY      _IOWR ('V', 56, struct v4l2_frequency)
 907 #define VIDIOC_S_FREQUENCY      _IOW  ('V', 57, struct v4l2_frequency)
 908 #define VIDIOC_CROPCAP          _IOWR ('V', 58, struct v4l2_cropcap)
 909 #define VIDIOC_G_CROP           _IOWR ('V', 59, struct v4l2_crop)
 910 #define VIDIOC_S_CROP           _IOW  ('V', 60, struct v4l2_crop)
 911 #define VIDIOC_G_JPEGCOMP       _IOR  ('V', 61, struct v4l2_jpegcompression)
 912 #define VIDIOC_S_JPEGCOMP       _IOW  ('V', 62, struct v4l2_jpegcompression)
 913 #define VIDIOC_QUERYSTD         _IOR  ('V', 63, v4l2_std_id)
 914 #define VIDIOC_TRY_FMT          _IOWR ('V', 64, struct v4l2_format)
 915 #define VIDIOC_ENUMAUDIO        _IOWR ('V', 65, struct v4l2_audio)
 916 #define VIDIOC_ENUMAUDOUT       _IOWR ('V', 66, struct v4l2_audioout)
 917 #define VIDIOC_G_PRIORITY       _IOR  ('V', 67, enum v4l2_priority)
 918 #define VIDIOC_S_PRIORITY       _IOW  ('V', 68, enum v4l2_priority)
 919
 920 /* for compatibility, will go away some day */
 921 #define VIDIOC_OVERLAY_OLD      _IOWR ('V', 14, int)
 922 #define VIDIOC_S_PARM_OLD       _IOW  ('V', 22, struct v4l2_streamparm)
 923 #define VIDIOC_S_CTRL_OLD       _IOW  ('V', 28, struct v4l2_control)
 924 #define VIDIOC_G_AUDIO_OLD      _IOWR ('V', 33, struct v4l2_audio)
 925 #define VIDIOC_G_AUDOUT_OLD     _IOWR ('V', 49, struct v4l2_audioout)
 926 #define VIDIOC_CROPCAP_OLD      _IOR  ('V', 58, struct v4l2_cropcap)
 927
 928 #define BASE_VIDIOC_PRIVATE     192             /* 192-255 are private */
 929
 930
 931 #ifdef __KERNEL__
 932 /*
 933  *
 934  *      V 4 L 2   D R I V E R   H E L P E R   A P I
 935  *
 936  *      Some commonly needed functions for drivers (v4l2-common.o module)
 937  */
 938 #include <linux/fs.h>
 939
 940 /*  Video standard functions  */
 941 extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs);
 942 extern int v4l2_video_std_construct(struct v4l2_standard *vs,
 943                                     int id, char *name);
 944
 945 /* prority handling */
 946 struct v4l2_prio_state {
 947         atomic_t prios[4];
 948 };
 949 int v4l2_prio_init(struct v4l2_prio_state *global);
 950 int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
 951                      enum v4l2_priority new);
 952 int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);
 953 int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local);
 954 enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global);
 955 int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local);
 956
 957 /* names for fancy debug output */
 958 extern char *v4l2_field_names[];
 959 extern char *v4l2_type_names[];
 960 extern char *v4l2_ioctl_names[];
 961
 962 /*  Compatibility layer interface  --  v4l1-compat module */
 963 typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,
 964                            unsigned int cmd, void *arg);
 965 int v4l_compat_translate_ioctl(struct inode *inode, struct file *file,
 966                                int cmd, void *arg, v4l2_kioctl driver_ioctl);
 967
 968 #endif /* __KERNEL__ */
 969 #endif /* __LINUX_VIDEODEV2_H */
 970
 971 /*
 972  * Local variables:
 973  * c-basic-offset: 8
 974  * End:
 975  */