4 /* (C) 2001-2003 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 8.10 */
25 2001/08/03 Alvarado Added ioctl constants to access methods for
26 changing white balance and red/blue gains
27 2002/12/15 G. H. Fernandez-Toribio VIDIOCGREALSIZE
30 /* These are private ioctl() commands, specific for the Philips webcams.
31 They contain functions not found in other webcams, and settings not
32 specified in the Video4Linux API.
34 The #define names are built up like follows:
35 VIDIOC VIDeo IOCtl prefix
45 /* The frame rate is encoded in the video_window.flags parameter using
46 the upper 16 bits, since some flags are defined nowadays. The following
47 defines provide a mask and shift to filter out this value.
49 In 'Snapshot' mode the camera freezes its automatic exposure and colour
52 #define PWC_FPS_SHIFT 16
53 #define PWC_FPS_MASK 0x00FF0000
54 #define PWC_FPS_FRMASK 0x003F0000
55 #define PWC_FPS_SNAPSHOT 0x00400000
66 /* pwc_whitebalance.mode values */
67 #define PWC_WB_INDOOR 0
68 #define PWC_WB_OUTDOOR 1
70 #define PWC_WB_MANUAL 3
73 /* Used with VIDIOCPWC[SG]AWB (Auto White Balance).
74 Set mode to one of the PWC_WB_* values above.
75 *red and *blue are the respective gains of these colour components inside
76 the camera; range 0..65535
77 When 'mode' == PWC_WB_MANUAL, 'manual_red' and 'manual_blue' are set or read;
79 'read_red' and 'read_blue' are read-only.
82 struct pwc_whitebalance
85 int manual_red, manual_blue; /* R/W */
86 int read_red, read_blue; /* R/O */
90 'control_speed' and 'control_delay' are used in automatic whitebalance mode,
91 and tell the camera how fast it should react to changes in lighting, and
92 with how much delay. Valid values are 0..65535.
101 /* Used with VIDIOCPWC[SG]LED */
104 int led_on; /* Led on-time; range = 0..25000 */
105 int led_off; /* Led off-time; range = 0..25000 */
108 /* Image size (used with GREALSIZE) */
115 /* Defines and structures for Motorized Pan & Tilt */
116 #define PWC_MPT_PAN 0x01
117 #define PWC_MPT_TILT 0x02
118 #define PWC_MPT_TIMEOUT 0x04 /* for status */
120 /* Set angles; when absolute = 1, the angle is absolute and the
121 driver calculates the relative offset for you. This can only
122 be used with VIDIOCPWCSANGLE; VIDIOCPWCGANGLE always returns
125 struct pwc_mpt_angles
127 int absolute; /* write-only */
128 int pan; /* degrees * 100 */
129 int tilt; /* degress * 100 */
130 int zoom; /* N/A, set to -1 */
133 /* Range of angles of the camera, both horizontally and vertically.
134 The zoom is not used, maybe in the future...
139 int pan_min, pan_max; /* degrees * 100 */
140 int tilt_min, tilt_max;
141 int zoom_min, zoom_max; /* -1, -1 */
144 struct pwc_mpt_status
152 /* Restore user settings */
153 #define VIDIOCPWCRUSER _IO('v', 192)
154 /* Save user settings */
155 #define VIDIOCPWCSUSER _IO('v', 193)
156 /* Restore factory settings */
157 #define VIDIOCPWCFACTORY _IO('v', 194)
159 /* You can manipulate the compression factor. A compression preference of 0
160 means use uncompressed modes when available; 1 is low compression, 2 is
161 medium and 3 is high compression preferred. Of course, the higher the
162 compression, the lower the bandwidth used but more chance of artefacts
163 in the image. The driver automatically chooses a higher compression when
164 the preferred mode is not available.
166 /* Set preferred compression quality (0 = uncompressed, 3 = highest compression) */
167 #define VIDIOCPWCSCQUAL _IOW('v', 195, int)
168 /* Get preferred compression quality */
169 #define VIDIOCPWCGCQUAL _IOR('v', 195, int)
172 /* This is a probe function; since so many devices are supported, it
173 becomes difficult to include all the names in programs that want to
174 check for the enhanced Philips stuff. So in stead, try this PROBE;
175 it returns a structure with the original name, and the corresponding
177 To use, fill the structure with zeroes, call PROBE and if that succeeds,
178 compare the name with that returned from VIDIOCGCAP; they should be the
179 same. If so, you can be assured it is a Philips (OEM) cam and the type
182 #define VIDIOCPWCPROBE _IOR('v', 199, struct pwc_probe)
184 /* Set AGC (Automatic Gain Control); int < 0 = auto, 0..65535 = fixed */
185 #define VIDIOCPWCSAGC _IOW('v', 200, int)
186 /* Get AGC; int < 0 = auto; >= 0 = fixed, range 0..65535 */
187 #define VIDIOCPWCGAGC _IOR('v', 200, int)
188 /* Set shutter speed; int < 0 = auto; >= 0 = fixed, range 0..65535 */
189 #define VIDIOCPWCSSHUTTER _IOW('v', 201, int)
191 /* Color compensation (Auto White Balance) */
192 #define VIDIOCPWCSAWB _IOW('v', 202, struct pwc_whitebalance)
193 #define VIDIOCPWCGAWB _IOR('v', 202, struct pwc_whitebalance)
196 #define VIDIOCPWCSAWBSPEED _IOW('v', 203, struct pwc_wb_speed)
197 #define VIDIOCPWCGAWBSPEED _IOR('v', 203, struct pwc_wb_speed)
199 /* LEDs on/off/blink; int range 0..65535 */
200 #define VIDIOCPWCSLED _IOW('v', 205, struct pwc_leds)
201 #define VIDIOCPWCGLED _IOR('v', 205, struct pwc_leds)
203 /* Contour (sharpness); int < 0 = auto, 0..65536 = fixed */
204 #define VIDIOCPWCSCONTOUR _IOW('v', 206, int)
205 #define VIDIOCPWCGCONTOUR _IOR('v', 206, int)
207 /* Backlight compensation; 0 = off, otherwise on */
208 #define VIDIOCPWCSBACKLIGHT _IOW('v', 207, int)
209 #define VIDIOCPWCGBACKLIGHT _IOR('v', 207, int)
211 /* Flickerless mode; = 0 off, otherwise on */
212 #define VIDIOCPWCSFLICKER _IOW('v', 208, int)
213 #define VIDIOCPWCGFLICKER _IOR('v', 208, int)
215 /* Dynamic noise reduction; 0 off, 3 = high noise reduction */
216 #define VIDIOCPWCSDYNNOISE _IOW('v', 209, int)
217 #define VIDIOCPWCGDYNNOISE _IOR('v', 209, int)
219 /* Real image size as used by the camera; tells you whether or not there's a gray border around the image */
220 #define VIDIOCPWCGREALSIZE _IOR('v', 210, struct pwc_imagesize)
222 /* Motorized pan & tilt functions */
223 #define VIDIOCPWCMPTRESET _IOW('v', 211, int)
224 #define VIDIOCPWCMPTGRANGE _IOR('v', 211, struct pwc_mpt_range)
225 #define VIDIOCPWCMPTSANGLE _IOW('v', 212, struct pwc_mpt_angles)
226 #define VIDIOCPWCMPTGANGLE _IOR('v', 212, struct pwc_mpt_angles)
227 #define VIDIOCPWCMPTSTATUS _IOR('v', 213, struct pwc_mpt_status)