4 /* (C) 2001-2004 Nemosoft Unv.
5 (C) 2004-2006 Luc Saillard (luc@saillard.org)
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.
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.
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.
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
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.
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
40 2006/01/01 Luc Saillard Add raw format definition
43 /* These are private ioctl() commands, specific for the Philips webcams.
44 They contain functions not found in other webcams, and settings not
45 specified in the Video4Linux API.
47 The #define names are built up like follows:
48 VIDIOC VIDeo IOCtl prefix
55 #include <linux/types.h>
56 #include <linux/version.h>
58 /* Enumeration of image sizes */
59 #define PSZ_SQCIF 0x00
68 /* The frame rate is encoded in the video_window.flags parameter using
69 the upper 16 bits, since some flags are defined nowadays. The following
70 defines provide a mask and shift to filter out this value.
71 This value can also be passing using the private flag when using v4l2 and
74 In 'Snapshot' mode the camera freezes its automatic exposure and colour
77 #define PWC_FPS_SHIFT 16
78 #define PWC_FPS_MASK 0x00FF0000
79 #define PWC_FPS_FRMASK 0x003F0000
80 #define PWC_FPS_SNAPSHOT 0x00400000
81 #define PWC_QLT_MASK 0x03000000
82 #define PWC_QLT_SHIFT 24
85 /* structure for transferring x & y coordinates */
88 int x
, y
; /* guess what */
89 int size
; /* size, or offset */
93 /* Used with VIDIOCPWCPROBE */
102 char serial
[30]; /* String with serial number. Contains terminating 0 */
105 /* pwc_whitebalance.mode values */
106 #define PWC_WB_INDOOR 0
107 #define PWC_WB_OUTDOOR 1
109 #define PWC_WB_MANUAL 3
110 #define PWC_WB_AUTO 4
112 /* Used with VIDIOCPWC[SG]AWB (Auto White Balance).
113 Set mode to one of the PWC_WB_* values above.
114 *red and *blue are the respective gains of these colour components inside
115 the camera; range 0..65535
116 When 'mode' == PWC_WB_MANUAL, 'manual_red' and 'manual_blue' are set or read;
118 'read_red' and 'read_blue' are read-only.
120 struct pwc_whitebalance
123 int manual_red
, manual_blue
; /* R/W */
124 int read_red
, read_blue
; /* R/O */
128 'control_speed' and 'control_delay' are used in automatic whitebalance mode,
129 and tell the camera how fast it should react to changes in lighting, and
130 with how much delay. Valid values are 0..65535.
139 /* Used with VIDIOCPWC[SG]LED */
142 int led_on
; /* Led on-time; range = 0..25000 */
143 int led_off
; /* Led off-time; range = 0..25000 */
146 /* Image size (used with GREALSIZE) */
153 /* Defines and structures for Motorized Pan & Tilt */
154 #define PWC_MPT_PAN 0x01
155 #define PWC_MPT_TILT 0x02
156 #define PWC_MPT_TIMEOUT 0x04 /* for status */
158 /* Set angles; when absolute != 0, the angle is absolute and the
159 driver calculates the relative offset for you. This can only
160 be used with VIDIOCPWCSANGLE; VIDIOCPWCGANGLE always returns
163 struct pwc_mpt_angles
165 int absolute
; /* write-only */
166 int pan
; /* degrees * 100 */
167 int tilt
; /* degress * 100 */
170 /* Range of angles of the camera, both horizontally and vertically.
174 int pan_min
, pan_max
; /* degrees * 100 */
175 int tilt_min
, tilt_max
;
178 struct pwc_mpt_status
186 /* This is used for out-of-kernel decompression. With it, you can get
187 all the necessary information to initialize and use the decompressor
188 routines in standalone applications.
190 struct pwc_video_command
192 int type
; /* camera type (645, 675, 730, etc.) */
193 int release
; /* release number */
195 int size
; /* one of PSZ_* */
197 int command_len
; /* length of USB video command */
198 unsigned char command_buf
[13]; /* Actual USB video command */
199 int bandlength
; /* >0 = compressed */
200 int frame_size
; /* Size of one (un)compressed frame */
203 /* Flags for PWCX subroutines. Not all modules honour all flags. */
204 #define PWCX_FLAG_PLANAR 0x0001
205 #define PWCX_FLAG_BAYER 0x0008
208 /* IOCTL definitions */
210 /* Restore user settings */
211 #define VIDIOCPWCRUSER _IO('v', 192)
212 /* Save user settings */
213 #define VIDIOCPWCSUSER _IO('v', 193)
214 /* Restore factory settings */
215 #define VIDIOCPWCFACTORY _IO('v', 194)
217 /* You can manipulate the compression factor. A compression preference of 0
218 means use uncompressed modes when available; 1 is low compression, 2 is
219 medium and 3 is high compression preferred. Of course, the higher the
220 compression, the lower the bandwidth used but more chance of artefacts
221 in the image. The driver automatically chooses a higher compression when
222 the preferred mode is not available.
224 /* Set preferred compression quality (0 = uncompressed, 3 = highest compression) */
225 #define VIDIOCPWCSCQUAL _IOW('v', 195, int)
226 /* Get preferred compression quality */
227 #define VIDIOCPWCGCQUAL _IOR('v', 195, int)
230 /* Retrieve serial number of camera */
231 #define VIDIOCPWCGSERIAL _IOR('v', 198, struct pwc_serial)
233 /* This is a probe function; since so many devices are supported, it
234 becomes difficult to include all the names in programs that want to
235 check for the enhanced Philips stuff. So in stead, try this PROBE;
236 it returns a structure with the original name, and the corresponding
238 To use, fill the structure with zeroes, call PROBE and if that succeeds,
239 compare the name with that returned from VIDIOCGCAP; they should be the
240 same. If so, you can be assured it is a Philips (OEM) cam and the type
243 #define VIDIOCPWCPROBE _IOR('v', 199, struct pwc_probe)
245 /* Set AGC (Automatic Gain Control); int < 0 = auto, 0..65535 = fixed */
246 #define VIDIOCPWCSAGC _IOW('v', 200, int)
247 /* Get AGC; int < 0 = auto; >= 0 = fixed, range 0..65535 */
248 #define VIDIOCPWCGAGC _IOR('v', 200, int)
249 /* Set shutter speed; int < 0 = auto; >= 0 = fixed, range 0..65535 */
250 #define VIDIOCPWCSSHUTTER _IOW('v', 201, int)
252 /* Color compensation (Auto White Balance) */
253 #define VIDIOCPWCSAWB _IOW('v', 202, struct pwc_whitebalance)
254 #define VIDIOCPWCGAWB _IOR('v', 202, struct pwc_whitebalance)
257 #define VIDIOCPWCSAWBSPEED _IOW('v', 203, struct pwc_wb_speed)
258 #define VIDIOCPWCGAWBSPEED _IOR('v', 203, struct pwc_wb_speed)
260 /* LEDs on/off/blink; int range 0..65535 */
261 #define VIDIOCPWCSLED _IOW('v', 205, struct pwc_leds)
262 #define VIDIOCPWCGLED _IOR('v', 205, struct pwc_leds)
264 /* Contour (sharpness); int < 0 = auto, 0..65536 = fixed */
265 #define VIDIOCPWCSCONTOUR _IOW('v', 206, int)
266 #define VIDIOCPWCGCONTOUR _IOR('v', 206, int)
268 /* Backlight compensation; 0 = off, otherwise on */
269 #define VIDIOCPWCSBACKLIGHT _IOW('v', 207, int)
270 #define VIDIOCPWCGBACKLIGHT _IOR('v', 207, int)
272 /* Flickerless mode; = 0 off, otherwise on */
273 #define VIDIOCPWCSFLICKER _IOW('v', 208, int)
274 #define VIDIOCPWCGFLICKER _IOR('v', 208, int)
276 /* Dynamic noise reduction; 0 off, 3 = high noise reduction */
277 #define VIDIOCPWCSDYNNOISE _IOW('v', 209, int)
278 #define VIDIOCPWCGDYNNOISE _IOR('v', 209, int)
280 /* Real image size as used by the camera; tells you whether or not there's a gray border around the image */
281 #define VIDIOCPWCGREALSIZE _IOR('v', 210, struct pwc_imagesize)
283 /* Motorized pan & tilt functions */
284 #define VIDIOCPWCMPTRESET _IOW('v', 211, int)
285 #define VIDIOCPWCMPTGRANGE _IOR('v', 211, struct pwc_mpt_range)
286 #define VIDIOCPWCMPTSANGLE _IOW('v', 212, struct pwc_mpt_angles)
287 #define VIDIOCPWCMPTGANGLE _IOR('v', 212, struct pwc_mpt_angles)
288 #define VIDIOCPWCMPTSTATUS _IOR('v', 213, struct pwc_mpt_status)
290 /* Get the USB set-video command; needed for initializing libpwcx */
291 #define VIDIOCPWCGVIDCMD _IOR('v', 215, struct pwc_video_command)
292 struct pwc_table_init_buffer
{
297 #define VIDIOCPWCGVIDTABLE _IOR('v', 216, struct pwc_table_init_buffer)
300 * This is private command used when communicating with v4l2.
301 * In the future all private ioctl will be remove/replace to
302 * use interface offer by v4l2.
305 #define V4L2_CID_PRIVATE_SAVE_USER (V4L2_CID_PRIVATE_BASE + 0)
306 #define V4L2_CID_PRIVATE_RESTORE_USER (V4L2_CID_PRIVATE_BASE + 1)
307 #define V4L2_CID_PRIVATE_RESTORE_FACTORY (V4L2_CID_PRIVATE_BASE + 2)
308 #define V4L2_CID_PRIVATE_COLOUR_MODE (V4L2_CID_PRIVATE_BASE + 3)
309 #define V4L2_CID_PRIVATE_AUTOCONTOUR (V4L2_CID_PRIVATE_BASE + 4)
310 #define V4L2_CID_PRIVATE_CONTOUR (V4L2_CID_PRIVATE_BASE + 5)
311 #define V4L2_CID_PRIVATE_BACKLIGHT (V4L2_CID_PRIVATE_BASE + 6)
312 #define V4L2_CID_PRIVATE_FLICKERLESS (V4L2_CID_PRIVATE_BASE + 7)
313 #define V4L2_CID_PRIVATE_NOISE_REDUCTION (V4L2_CID_PRIVATE_BASE + 8)
315 struct pwc_raw_frame
{
316 __le16 type
; /* type of the webcam */
317 __le16 vbandlength
; /* Size of 4lines compressed (used by the decompressor) */
318 __u8 cmd
[4]; /* the four byte of the command (in case of nala,
319 only the first 3 bytes is filled) */
320 __u8 rawframe
[0]; /* frame_size = H/4*vbandlength */
321 } __attribute__ ((packed
));
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