drivers/media/video/pwc/pwc-ioctl.h

   1 #ifndef PWC_IOCTL_H
   2 #define PWC_IOCTL_H
   3
   4 /* (C) 2001-2004 Nemosoft Unv.
   5    (C) 2004-2006 Luc Saillard (luc@saillard.org)
   6
   7    NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   8    driver and thus may have bugs that are not present in the original version.
   9    Please send bug reports and support requests to <luc@saillard.org>.
  10    The decompression routines have been implemented by reverse-engineering the
  11    Nemosoft binary pwcx module. Caveat emptor.
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 2 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  26 */
  27
  28 /* This is pwc-ioctl.h belonging to PWC 10.0.10
  29    It contains structures and defines to communicate from user space
  30    directly to the driver.
  31  */
  32
  33 /*
  34    Changes
  35    2001/08/03  Alvarado   Added ioctl constants to access methods for
  36                           changing white balance and red/blue gains
  37    2002/12/15  G. H. Fernandez-Toribio   VIDIOCGREALSIZE
  38    2003/12/13  Nemosft Unv. Some modifications to make interfacing to
  39                PWCX easier
  40  */
  41
  42 /* These are private ioctl() commands, specific for the Philips webcams.
  43    They contain functions not found in other webcams, and settings not
  44    specified in the Video4Linux API.
  45
  46    The #define names are built up like follows:
  47    VIDIOC               VIDeo IOCtl prefix
  48          PWC            Philps WebCam
  49             G           optional: Get
  50             S           optional: Set
  51              ...        the function
  52  */
  53
  54 #include <linux/types.h>
  55 #include <linux/version.h>
  56
  57  /* Enumeration of image sizes */
  58 #define PSZ_SQCIF       0x00
  59 #define PSZ_QSIF        0x01
  60 #define PSZ_QCIF        0x02
  61 #define PSZ_SIF         0x03
  62 #define PSZ_CIF         0x04
  63 #define PSZ_VGA         0x05
  64 #define PSZ_MAX         6
  65
  66
  67 /* The frame rate is encoded in the video_window.flags parameter using
  68    the upper 16 bits, since some flags are defined nowadays. The following
  69    defines provide a mask and shift to filter out this value.
  70    This value can also be passing using the private flag when using v4l2 and
  71    VIDIOC_S_FMT ioctl.
  72
  73    In 'Snapshot' mode the camera freezes its automatic exposure and colour
  74    balance controls.
  75  */
  76 #define PWC_FPS_SHIFT           16
  77 #define PWC_FPS_MASK            0x00FF0000
  78 #define PWC_FPS_FRMASK          0x003F0000
  79 #define PWC_FPS_SNAPSHOT        0x00400000
  80 #define PWC_QLT_MASK            0x03000000
  81 #define PWC_QLT_SHIFT           24
  82
  83
  84 /* structure for transferring x & y coordinates */
  85 struct pwc_coord
  86 {
  87         int x, y;               /* guess what */
  88         int size;               /* size, or offset */
  89 };
  90
  91
  92 /* Used with VIDIOCPWCPROBE */
  93 struct pwc_probe
  94 {
  95         char name[32];
  96         int type;
  97 };
  98
  99 struct pwc_serial
 100 {
 101         char serial[30];        /* String with serial number. Contains terminating 0 */
 102 };
 103
 104 /* pwc_whitebalance.mode values */
 105 #define PWC_WB_INDOOR           0
 106 #define PWC_WB_OUTDOOR          1
 107 #define PWC_WB_FL               2
 108 #define PWC_WB_MANUAL           3
 109 #define PWC_WB_AUTO             4
 110
 111 /* Used with VIDIOCPWC[SG]AWB (Auto White Balance).
 112    Set mode to one of the PWC_WB_* values above.
 113    *red and *blue are the respective gains of these colour components inside
 114    the camera; range 0..65535
 115    When 'mode' == PWC_WB_MANUAL, 'manual_red' and 'manual_blue' are set or read;
 116    otherwise undefined.
 117    'read_red' and 'read_blue' are read-only.
 118 */
 119 struct pwc_whitebalance
 120 {
 121         int mode;
 122         int manual_red, manual_blue;    /* R/W */
 123         int read_red, read_blue;        /* R/O */
 124 };
 125
 126 /*
 127    'control_speed' and 'control_delay' are used in automatic whitebalance mode,
 128    and tell the camera how fast it should react to changes in lighting, and
 129    with how much delay. Valid values are 0..65535.
 130 */
 131 struct pwc_wb_speed
 132 {
 133         int control_speed;
 134         int control_delay;
 135
 136 };
 137
 138 /* Used with VIDIOCPWC[SG]LED */
 139 struct pwc_leds
 140 {
 141         int led_on;                     /* Led on-time; range = 0..25000 */
 142         int led_off;                    /* Led off-time; range = 0..25000  */
 143 };
 144
 145 /* Image size (used with GREALSIZE) */
 146 struct pwc_imagesize
 147 {
 148         int width;
 149         int height;
 150 };
 151
 152 /* Defines and structures for Motorized Pan & Tilt */
 153 #define PWC_MPT_PAN             0x01
 154 #define PWC_MPT_TILT            0x02
 155 #define PWC_MPT_TIMEOUT         0x04 /* for status */
 156
 157 /* Set angles; when absolute != 0, the angle is absolute and the
 158    driver calculates the relative offset for you. This can only
 159    be used with VIDIOCPWCSANGLE; VIDIOCPWCGANGLE always returns
 160    absolute angles.
 161  */
 162 struct pwc_mpt_angles
 163 {
 164         int absolute;           /* write-only */
 165         int pan;                /* degrees * 100 */
 166         int tilt;               /* degress * 100 */
 167 };
 168
 169 /* Range of angles of the camera, both horizontally and vertically.
 170  */
 171 struct pwc_mpt_range
 172 {
 173         int pan_min, pan_max;           /* degrees * 100 */
 174         int tilt_min, tilt_max;
 175 };
 176
 177 struct pwc_mpt_status
 178 {
 179         int status;
 180         int time_pan;
 181         int time_tilt;
 182 };
 183
 184
 185 /* This is used for out-of-kernel decompression. With it, you can get
 186    all the necessary information to initialize and use the decompressor
 187    routines in standalone applications.
 188  */
 189 struct pwc_video_command
 190 {
 191         int type;               /* camera type (645, 675, 730, etc.) */
 192         int release;            /* release number */
 193
 194         int size;               /* one of PSZ_* */
 195         int alternate;
 196         int command_len;        /* length of USB video command */
 197         unsigned char command_buf[13];  /* Actual USB video command */
 198         int bandlength;         /* >0 = compressed */
 199         int frame_size;         /* Size of one (un)compressed frame */
 200 };
 201
 202 /* Flags for PWCX subroutines. Not all modules honour all flags. */
 203 #define PWCX_FLAG_PLANAR        0x0001
 204 #define PWCX_FLAG_BAYER         0x0008
 205
 206
 207 /* IOCTL definitions */
 208
 209  /* Restore user settings */
 210 #define VIDIOCPWCRUSER          _IO('v', 192)
 211  /* Save user settings */
 212 #define VIDIOCPWCSUSER          _IO('v', 193)
 213  /* Restore factory settings */
 214 #define VIDIOCPWCFACTORY        _IO('v', 194)
 215
 216  /* You can manipulate the compression factor. A compression preference of 0
 217     means use uncompressed modes when available; 1 is low compression, 2 is
 218     medium and 3 is high compression preferred. Of course, the higher the
 219     compression, the lower the bandwidth used but more chance of artefacts
 220     in the image. The driver automatically chooses a higher compression when
 221     the preferred mode is not available.
 222   */
 223  /* Set preferred compression quality (0 = uncompressed, 3 = highest compression) */
 224 #define VIDIOCPWCSCQUAL         _IOW('v', 195, int)
 225  /* Get preferred compression quality */
 226 #define VIDIOCPWCGCQUAL         _IOR('v', 195, int)
 227
 228
 229 /* Retrieve serial number of camera */
 230 #define VIDIOCPWCGSERIAL        _IOR('v', 198, struct pwc_serial)
 231
 232  /* This is a probe function; since so many devices are supported, it
 233     becomes difficult to include all the names in programs that want to
 234     check for the enhanced Philips stuff. So in stead, try this PROBE;
 235     it returns a structure with the original name, and the corresponding
 236     Philips type.
 237     To use, fill the structure with zeroes, call PROBE and if that succeeds,
 238     compare the name with that returned from VIDIOCGCAP; they should be the
 239     same. If so, you can be assured it is a Philips (OEM) cam and the type
 240     is valid.
 241  */
 242 #define VIDIOCPWCPROBE          _IOR('v', 199, struct pwc_probe)
 243
 244  /* Set AGC (Automatic Gain Control); int < 0 = auto, 0..65535 = fixed */
 245 #define VIDIOCPWCSAGC           _IOW('v', 200, int)
 246  /* Get AGC; int < 0 = auto; >= 0 = fixed, range 0..65535 */
 247 #define VIDIOCPWCGAGC           _IOR('v', 200, int)
 248  /* Set shutter speed; int < 0 = auto; >= 0 = fixed, range 0..65535 */
 249 #define VIDIOCPWCSSHUTTER       _IOW('v', 201, int)
 250
 251  /* Color compensation (Auto White Balance) */
 252 #define VIDIOCPWCSAWB           _IOW('v', 202, struct pwc_whitebalance)
 253 #define VIDIOCPWCGAWB           _IOR('v', 202, struct pwc_whitebalance)
 254
 255  /* Auto WB speed */
 256 #define VIDIOCPWCSAWBSPEED      _IOW('v', 203, struct pwc_wb_speed)
 257 #define VIDIOCPWCGAWBSPEED      _IOR('v', 203, struct pwc_wb_speed)
 258
 259  /* LEDs on/off/blink; int range 0..65535 */
 260 #define VIDIOCPWCSLED           _IOW('v', 205, struct pwc_leds)
 261 #define VIDIOCPWCGLED           _IOR('v', 205, struct pwc_leds)
 262
 263   /* Contour (sharpness); int < 0 = auto, 0..65536 = fixed */
 264 #define VIDIOCPWCSCONTOUR       _IOW('v', 206, int)
 265 #define VIDIOCPWCGCONTOUR       _IOR('v', 206, int)
 266
 267   /* Backlight compensation; 0 = off, otherwise on */
 268 #define VIDIOCPWCSBACKLIGHT     _IOW('v', 207, int)
 269 #define VIDIOCPWCGBACKLIGHT     _IOR('v', 207, int)
 270
 271   /* Flickerless mode; = 0 off, otherwise on */
 272 #define VIDIOCPWCSFLICKER       _IOW('v', 208, int)
 273 #define VIDIOCPWCGFLICKER       _IOR('v', 208, int)
 274
 275   /* Dynamic noise reduction; 0 off, 3 = high noise reduction */
 276 #define VIDIOCPWCSDYNNOISE      _IOW('v', 209, int)
 277 #define VIDIOCPWCGDYNNOISE      _IOR('v', 209, int)
 278
 279  /* Real image size as used by the camera; tells you whether or not there's a gray border around the image */
 280 #define VIDIOCPWCGREALSIZE      _IOR('v', 210, struct pwc_imagesize)
 281
 282  /* Motorized pan & tilt functions */
 283 #define VIDIOCPWCMPTRESET       _IOW('v', 211, int)
 284 #define VIDIOCPWCMPTGRANGE      _IOR('v', 211, struct pwc_mpt_range)
 285 #define VIDIOCPWCMPTSANGLE      _IOW('v', 212, struct pwc_mpt_angles)
 286 #define VIDIOCPWCMPTGANGLE      _IOR('v', 212, struct pwc_mpt_angles)
 287 #define VIDIOCPWCMPTSTATUS      _IOR('v', 213, struct pwc_mpt_status)
 288
 289  /* Get the USB set-video command; needed for initializing libpwcx */
 290 #define VIDIOCPWCGVIDCMD        _IOR('v', 215, struct pwc_video_command)
 291 struct pwc_table_init_buffer {
 292    int len;
 293    char *buffer;
 294
 295 };
 296 #define VIDIOCPWCGVIDTABLE      _IOR('v', 216, struct pwc_table_init_buffer)
 297
 298 /*
 299  * This is private command used when communicating with v4l2.
 300  * In the future all private ioctl will be remove/replace to
 301  * use interface offer by v4l2.
 302  */
 303
 304 #define V4L2_CID_PRIVATE_SAVE_USER       (V4L2_CID_PRIVATE_BASE + 0)
 305 #define V4L2_CID_PRIVATE_RESTORE_USER    (V4L2_CID_PRIVATE_BASE + 1)
 306 #define V4L2_CID_PRIVATE_RESTORE_FACTORY (V4L2_CID_PRIVATE_BASE + 2)
 307 #define V4L2_CID_PRIVATE_COLOUR_MODE     (V4L2_CID_PRIVATE_BASE + 3)
 308 #define V4L2_CID_PRIVATE_AUTOCONTOUR     (V4L2_CID_PRIVATE_BASE + 4)
 309 #define V4L2_CID_PRIVATE_CONTOUR         (V4L2_CID_PRIVATE_BASE + 5)
 310 #define V4L2_CID_PRIVATE_BACKLIGHT       (V4L2_CID_PRIVATE_BASE + 6)
 311 #define V4L2_CID_PRIVATE_FLICKERLESS     (V4L2_CID_PRIVATE_BASE + 7)
 312 #define V4L2_CID_PRIVATE_NOISE_REDUCTION (V4L2_CID_PRIVATE_BASE + 8)
 313
 314 struct pwc_raw_frame {
 315    __le16 type;         /* type of the webcam */
 316    __le16 vbandlength;  /* Size of 4lines compressed (used by the decompressor) */
 317    __u8   cmd[4];       /* the four byte of the command (in case of nala,
 318                            only the first 3 bytes is filled) */
 319    __u8   rawframe[0];  /* frame_size = H/4*vbandlength */
 320 } __attribute__ ((packed));
 321
 322
 323 #endif