4 /* (C) 2001-2004 Nemosoft Unv. webcam@smcc.demon.nl
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 /* This is pwc-ioctl.h belonging to PWC 8.12.1
22 It contains structures and defines to communicate from user space
23 directly to the driver.
28 2001/08/03 Alvarado Added ioctl constants to access methods for
29 changing white balance and red/blue gains
30 2002/12/15 G. H. Fernandez-Toribio VIDIOCGREALSIZE
31 2003/12/13 Nemosft Unv. Some modifications to make interfacing to
35 /* These are private ioctl() commands, specific for the Philips webcams.
36 They contain functions not found in other webcams, and settings not
37 specified in the Video4Linux API.
39 The #define names are built up like follows:
40 VIDIOC VIDeo IOCtl prefix
48 /* Enumeration of image sizes */
49 #define PSZ_SQCIF 0x00
58 /* The frame rate is encoded in the video_window.flags parameter using
59 the upper 16 bits, since some flags are defined nowadays. The following
60 defines provide a mask and shift to filter out this value.
62 In 'Snapshot' mode the camera freezes its automatic exposure and colour
65 #define PWC_FPS_SHIFT 16
66 #define PWC_FPS_MASK 0x00FF0000
67 #define PWC_FPS_FRMASK 0x003F0000
68 #define PWC_FPS_SNAPSHOT 0x00400000
71 /* structure for transfering x & y coordinates */
74 int x, y; /* guess what */
75 int size; /* size, or offset */
79 /* Used with VIDIOCPWCPROBE */
88 char serial[30]; /* String with serial number. Contains terminating 0 */
91 /* pwc_whitebalance.mode values */
92 #define PWC_WB_INDOOR 0
93 #define PWC_WB_OUTDOOR 1
95 #define PWC_WB_MANUAL 3
98 /* Used with VIDIOCPWC[SG]AWB (Auto White Balance).
99 Set mode to one of the PWC_WB_* values above.
100 *red and *blue are the respective gains of these colour components inside
101 the camera; range 0..65535
102 When 'mode' == PWC_WB_MANUAL, 'manual_red' and 'manual_blue' are set or read;
104 'read_red' and 'read_blue' are read-only.
106 struct pwc_whitebalance
109 int manual_red, manual_blue; /* R/W */
110 int read_red, read_blue; /* R/O */
114 'control_speed' and 'control_delay' are used in automatic whitebalance mode,
115 and tell the camera how fast it should react to changes in lighting, and
116 with how much delay. Valid values are 0..65535.
125 /* Used with VIDIOCPWC[SG]LED */
128 int led_on; /* Led on-time; range = 0..25000 */
129 int led_off; /* Led off-time; range = 0..25000 */
132 /* Image size (used with GREALSIZE) */
139 /* Defines and structures for Motorized Pan & Tilt */
140 #define PWC_MPT_PAN 0x01
141 #define PWC_MPT_TILT 0x02
142 #define PWC_MPT_TIMEOUT 0x04 /* for status */
144 /* Set angles; when absolute != 0, the angle is absolute and the
145 driver calculates the relative offset for you. This can only
146 be used with VIDIOCPWCSANGLE; VIDIOCPWCGANGLE always returns
149 struct pwc_mpt_angles
151 int absolute; /* write-only */
152 int pan; /* degrees * 100 */
153 int tilt; /* degress * 100 */
156 /* Range of angles of the camera, both horizontally and vertically.
160 int pan_min, pan_max; /* degrees * 100 */
161 int tilt_min, tilt_max;
164 struct pwc_mpt_status
172 /* This is used for out-of-kernel decompression. With it, you can get
173 all the necessary information to initialize and use the decompressor
174 routines in standalone applications.
176 struct pwc_video_command
178 int type; /* camera type (645, 675, 730, etc.) */
179 int release; /* release number */
181 int size; /* one of PSZ_* */
183 int command_len; /* length of USB video command */
184 unsigned char command_buf[13]; /* Actual USB video command */
185 int bandlength; /* >0 = compressed */
186 int frame_size; /* Size of one (un)compressed frame */
189 /* Flags for PWCX subroutines. Not all modules honour all flags. */
190 #define PWCX_FLAG_PLANAR 0x0001
191 #define PWCX_FLAG_BAYER 0x0008
194 /* IOCTL definitions */
196 /* Restore user settings */
197 #define VIDIOCPWCRUSER _IO('v', 192)
198 /* Save user settings */
199 #define VIDIOCPWCSUSER _IO('v', 193)
200 /* Restore factory settings */
201 #define VIDIOCPWCFACTORY _IO('v', 194)
203 /* You can manipulate the compression factor. A compression preference of 0
204 means use uncompressed modes when available; 1 is low compression, 2 is
205 medium and 3 is high compression preferred. Of course, the higher the
206 compression, the lower the bandwidth used but more chance of artefacts
207 in the image. The driver automatically chooses a higher compression when
208 the preferred mode is not available.
210 /* Set preferred compression quality (0 = uncompressed, 3 = highest compression) */
211 #define VIDIOCPWCSCQUAL _IOW('v', 195, int)
212 /* Get preferred compression quality */
213 #define VIDIOCPWCGCQUAL _IOR('v', 195, int)
216 /* Retrieve serial number of camera */
217 #define VIDIOCPWCGSERIAL _IOR('v', 198, struct pwc_serial)
219 /* This is a probe function; since so many devices are supported, it
220 becomes difficult to include all the names in programs that want to
221 check for the enhanced Philips stuff. So in stead, try this PROBE;
222 it returns a structure with the original name, and the corresponding
224 To use, fill the structure with zeroes, call PROBE and if that succeeds,
225 compare the name with that returned from VIDIOCGCAP; they should be the
226 same. If so, you can be assured it is a Philips (OEM) cam and the type
229 #define VIDIOCPWCPROBE _IOR('v', 199, struct pwc_probe)
231 /* Set AGC (Automatic Gain Control); int < 0 = auto, 0..65535 = fixed */
232 #define VIDIOCPWCSAGC _IOW('v', 200, int)
233 /* Get AGC; int < 0 = auto; >= 0 = fixed, range 0..65535 */
234 #define VIDIOCPWCGAGC _IOR('v', 200, int)
235 /* Set shutter speed; int < 0 = auto; >= 0 = fixed, range 0..65535 */
236 #define VIDIOCPWCSSHUTTER _IOW('v', 201, int)
238 /* Color compensation (Auto White Balance) */
239 #define VIDIOCPWCSAWB _IOW('v', 202, struct pwc_whitebalance)
240 #define VIDIOCPWCGAWB _IOR('v', 202, struct pwc_whitebalance)
243 #define VIDIOCPWCSAWBSPEED _IOW('v', 203, struct pwc_wb_speed)
244 #define VIDIOCPWCGAWBSPEED _IOR('v', 203, struct pwc_wb_speed)
246 /* LEDs on/off/blink; int range 0..65535 */
247 #define VIDIOCPWCSLED _IOW('v', 205, struct pwc_leds)
248 #define VIDIOCPWCGLED _IOR('v', 205, struct pwc_leds)
250 /* Contour (sharpness); int < 0 = auto, 0..65536 = fixed */
251 #define VIDIOCPWCSCONTOUR _IOW('v', 206, int)
252 #define VIDIOCPWCGCONTOUR _IOR('v', 206, int)
254 /* Backlight compensation; 0 = off, otherwise on */
255 #define VIDIOCPWCSBACKLIGHT _IOW('v', 207, int)
256 #define VIDIOCPWCGBACKLIGHT _IOR('v', 207, int)
258 /* Flickerless mode; = 0 off, otherwise on */
259 #define VIDIOCPWCSFLICKER _IOW('v', 208, int)
260 #define VIDIOCPWCGFLICKER _IOR('v', 208, int)
262 /* Dynamic noise reduction; 0 off, 3 = high noise reduction */
263 #define VIDIOCPWCSDYNNOISE _IOW('v', 209, int)
264 #define VIDIOCPWCGDYNNOISE _IOR('v', 209, int)
266 /* Real image size as used by the camera; tells you whether or not there's a gray border around the image */
267 #define VIDIOCPWCGREALSIZE _IOR('v', 210, struct pwc_imagesize)
269 /* Motorized pan & tilt functions */
270 #define VIDIOCPWCMPTRESET _IOW('v', 211, int)
271 #define VIDIOCPWCMPTGRANGE _IOR('v', 211, struct pwc_mpt_range)
272 #define VIDIOCPWCMPTSANGLE _IOW('v', 212, struct pwc_mpt_angles)
273 #define VIDIOCPWCMPTGANGLE _IOR('v', 212, struct pwc_mpt_angles)
274 #define VIDIOCPWCMPTSTATUS _IOR('v', 213, struct pwc_mpt_status)
276 /* Get the USB set-video command; needed for initializing libpwcx */
277 #define VIDIOCPWCGVIDCMD _IOR('v', 215, struct pwc_video_command)