325 lines
10 KiB
C
325 lines
10 KiB
C
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#ifndef PWC_IOCTL_H
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#define PWC_IOCTL_H
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/* (C) 2001-2004 Nemosoft Unv.
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(C) 2004-2006 Luc Saillard (luc@saillard.org)
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NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
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driver and thus may have bugs that are not present in the original version.
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Please send bug reports and support requests to <luc@saillard.org>.
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The decompression routines have been implemented by reverse-engineering the
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Nemosoft binary pwcx module. Caveat emptor.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* This is pwc-ioctl.h belonging to PWC 10.0.10
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It contains structures and defines to communicate from user space
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directly to the driver.
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*/
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/*
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Changes
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2001/08/03 Alvarado Added ioctl constants to access methods for
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changing white balance and red/blue gains
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2002/12/15 G. H. Fernandez-Toribio VIDIOCGREALSIZE
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2003/12/13 Nemosft Unv. Some modifications to make interfacing to
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PWCX easier
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2006/01/01 Luc Saillard Add raw format definition
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*/
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/* These are private ioctl() commands, specific for the Philips webcams.
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They contain functions not found in other webcams, and settings not
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specified in the Video4Linux API.
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The #define names are built up like follows:
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VIDIOC VIDeo IOCtl prefix
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PWC Philps WebCam
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G optional: Get
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S optional: Set
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... the function
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*/
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#include <linux/types.h>
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#include <linux/version.h>
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/* Enumeration of image sizes */
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#define PSZ_SQCIF 0x00
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#define PSZ_QSIF 0x01
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#define PSZ_QCIF 0x02
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#define PSZ_SIF 0x03
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#define PSZ_CIF 0x04
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#define PSZ_VGA 0x05
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#define PSZ_MAX 6
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/* The frame rate is encoded in the video_window.flags parameter using
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the upper 16 bits, since some flags are defined nowadays. The following
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defines provide a mask and shift to filter out this value.
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This value can also be passing using the private flag when using v4l2 and
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VIDIOC_S_FMT ioctl.
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In 'Snapshot' mode the camera freezes its automatic exposure and colour
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balance controls.
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*/
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#define PWC_FPS_SHIFT 16
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#define PWC_FPS_MASK 0x00FF0000
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#define PWC_FPS_FRMASK 0x003F0000
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#define PWC_FPS_SNAPSHOT 0x00400000
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#define PWC_QLT_MASK 0x03000000
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#define PWC_QLT_SHIFT 24
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/* structure for transferring x & y coordinates */
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struct pwc_coord
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{
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int x, y; /* guess what */
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int size; /* size, or offset */
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};
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/* Used with VIDIOCPWCPROBE */
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struct pwc_probe
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{
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char name[32];
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int type;
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};
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struct pwc_serial
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{
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char serial[30]; /* String with serial number. Contains terminating 0 */
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};
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/* pwc_whitebalance.mode values */
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#define PWC_WB_INDOOR 0
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#define PWC_WB_OUTDOOR 1
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#define PWC_WB_FL 2
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#define PWC_WB_MANUAL 3
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#define PWC_WB_AUTO 4
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/* Used with VIDIOCPWC[SG]AWB (Auto White Balance).
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Set mode to one of the PWC_WB_* values above.
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*red and *blue are the respective gains of these colour components inside
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the camera; range 0..65535
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When 'mode' == PWC_WB_MANUAL, 'manual_red' and 'manual_blue' are set or read;
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otherwise undefined.
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'read_red' and 'read_blue' are read-only.
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*/
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struct pwc_whitebalance
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{
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int mode;
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int manual_red, manual_blue; /* R/W */
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int read_red, read_blue; /* R/O */
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};
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/*
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'control_speed' and 'control_delay' are used in automatic whitebalance mode,
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and tell the camera how fast it should react to changes in lighting, and
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with how much delay. Valid values are 0..65535.
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*/
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struct pwc_wb_speed
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{
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int control_speed;
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int control_delay;
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};
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/* Used with VIDIOCPWC[SG]LED */
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struct pwc_leds
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{
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int led_on; /* Led on-time; range = 0..25000 */
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int led_off; /* Led off-time; range = 0..25000 */
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};
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/* Image size (used with GREALSIZE) */
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struct pwc_imagesize
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{
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int width;
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int height;
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};
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/* Defines and structures for Motorized Pan & Tilt */
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#define PWC_MPT_PAN 0x01
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#define PWC_MPT_TILT 0x02
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#define PWC_MPT_TIMEOUT 0x04 /* for status */
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/* Set angles; when absolute != 0, the angle is absolute and the
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driver calculates the relative offset for you. This can only
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be used with VIDIOCPWCSANGLE; VIDIOCPWCGANGLE always returns
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absolute angles.
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*/
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struct pwc_mpt_angles
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{
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int absolute; /* write-only */
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int pan; /* degrees * 100 */
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int tilt; /* degress * 100 */
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};
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/* Range of angles of the camera, both horizontally and vertically.
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*/
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struct pwc_mpt_range
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{
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int pan_min, pan_max; /* degrees * 100 */
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int tilt_min, tilt_max;
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};
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struct pwc_mpt_status
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{
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int status;
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int time_pan;
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int time_tilt;
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};
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/* This is used for out-of-kernel decompression. With it, you can get
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all the necessary information to initialize and use the decompressor
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routines in standalone applications.
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*/
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struct pwc_video_command
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{
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int type; /* camera type (645, 675, 730, etc.) */
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int release; /* release number */
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int size; /* one of PSZ_* */
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int alternate;
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int command_len; /* length of USB video command */
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unsigned char command_buf[13]; /* Actual USB video command */
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int bandlength; /* >0 = compressed */
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int frame_size; /* Size of one (un)compressed frame */
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};
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/* Flags for PWCX subroutines. Not all modules honour all flags. */
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#define PWCX_FLAG_PLANAR 0x0001
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#define PWCX_FLAG_BAYER 0x0008
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/* IOCTL definitions */
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/* Restore user settings */
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#define VIDIOCPWCRUSER _IO('v', 192)
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/* Save user settings */
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#define VIDIOCPWCSUSER _IO('v', 193)
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/* Restore factory settings */
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#define VIDIOCPWCFACTORY _IO('v', 194)
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/* You can manipulate the compression factor. A compression preference of 0
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means use uncompressed modes when available; 1 is low compression, 2 is
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medium and 3 is high compression preferred. Of course, the higher the
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compression, the lower the bandwidth used but more chance of artefacts
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in the image. The driver automatically chooses a higher compression when
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the preferred mode is not available.
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*/
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/* Set preferred compression quality (0 = uncompressed, 3 = highest compression) */
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#define VIDIOCPWCSCQUAL _IOW('v', 195, int)
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/* Get preferred compression quality */
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#define VIDIOCPWCGCQUAL _IOR('v', 195, int)
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/* Retrieve serial number of camera */
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#define VIDIOCPWCGSERIAL _IOR('v', 198, struct pwc_serial)
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/* This is a probe function; since so many devices are supported, it
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becomes difficult to include all the names in programs that want to
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check for the enhanced Philips stuff. So in stead, try this PROBE;
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it returns a structure with the original name, and the corresponding
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Philips type.
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To use, fill the structure with zeroes, call PROBE and if that succeeds,
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compare the name with that returned from VIDIOCGCAP; they should be the
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same. If so, you can be assured it is a Philips (OEM) cam and the type
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is valid.
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*/
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#define VIDIOCPWCPROBE _IOR('v', 199, struct pwc_probe)
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/* Set AGC (Automatic Gain Control); int < 0 = auto, 0..65535 = fixed */
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#define VIDIOCPWCSAGC _IOW('v', 200, int)
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/* Get AGC; int < 0 = auto; >= 0 = fixed, range 0..65535 */
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#define VIDIOCPWCGAGC _IOR('v', 200, int)
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/* Set shutter speed; int < 0 = auto; >= 0 = fixed, range 0..65535 */
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#define VIDIOCPWCSSHUTTER _IOW('v', 201, int)
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/* Color compensation (Auto White Balance) */
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#define VIDIOCPWCSAWB _IOW('v', 202, struct pwc_whitebalance)
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#define VIDIOCPWCGAWB _IOR('v', 202, struct pwc_whitebalance)
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/* Auto WB speed */
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#define VIDIOCPWCSAWBSPEED _IOW('v', 203, struct pwc_wb_speed)
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#define VIDIOCPWCGAWBSPEED _IOR('v', 203, struct pwc_wb_speed)
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/* LEDs on/off/blink; int range 0..65535 */
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#define VIDIOCPWCSLED _IOW('v', 205, struct pwc_leds)
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#define VIDIOCPWCGLED _IOR('v', 205, struct pwc_leds)
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/* Contour (sharpness); int < 0 = auto, 0..65536 = fixed */
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#define VIDIOCPWCSCONTOUR _IOW('v', 206, int)
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#define VIDIOCPWCGCONTOUR _IOR('v', 206, int)
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/* Backlight compensation; 0 = off, otherwise on */
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#define VIDIOCPWCSBACKLIGHT _IOW('v', 207, int)
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#define VIDIOCPWCGBACKLIGHT _IOR('v', 207, int)
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/* Flickerless mode; = 0 off, otherwise on */
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#define VIDIOCPWCSFLICKER _IOW('v', 208, int)
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#define VIDIOCPWCGFLICKER _IOR('v', 208, int)
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/* Dynamic noise reduction; 0 off, 3 = high noise reduction */
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#define VIDIOCPWCSDYNNOISE _IOW('v', 209, int)
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#define VIDIOCPWCGDYNNOISE _IOR('v', 209, int)
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/* Real image size as used by the camera; tells you whether or not there's a gray border around the image */
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#define VIDIOCPWCGREALSIZE _IOR('v', 210, struct pwc_imagesize)
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/* Motorized pan & tilt functions */
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#define VIDIOCPWCMPTRESET _IOW('v', 211, int)
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#define VIDIOCPWCMPTGRANGE _IOR('v', 211, struct pwc_mpt_range)
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#define VIDIOCPWCMPTSANGLE _IOW('v', 212, struct pwc_mpt_angles)
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#define VIDIOCPWCMPTGANGLE _IOR('v', 212, struct pwc_mpt_angles)
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#define VIDIOCPWCMPTSTATUS _IOR('v', 213, struct pwc_mpt_status)
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/* Get the USB set-video command; needed for initializing libpwcx */
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#define VIDIOCPWCGVIDCMD _IOR('v', 215, struct pwc_video_command)
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struct pwc_table_init_buffer {
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int len;
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char *buffer;
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};
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#define VIDIOCPWCGVIDTABLE _IOR('v', 216, struct pwc_table_init_buffer)
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/*
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* This is private command used when communicating with v4l2.
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* In the future all private ioctl will be remove/replace to
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* use interface offer by v4l2.
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*/
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#define V4L2_CID_PRIVATE_SAVE_USER (V4L2_CID_PRIVATE_BASE + 0)
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#define V4L2_CID_PRIVATE_RESTORE_USER (V4L2_CID_PRIVATE_BASE + 1)
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#define V4L2_CID_PRIVATE_RESTORE_FACTORY (V4L2_CID_PRIVATE_BASE + 2)
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#define V4L2_CID_PRIVATE_COLOUR_MODE (V4L2_CID_PRIVATE_BASE + 3)
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#define V4L2_CID_PRIVATE_AUTOCONTOUR (V4L2_CID_PRIVATE_BASE + 4)
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#define V4L2_CID_PRIVATE_CONTOUR (V4L2_CID_PRIVATE_BASE + 5)
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#define V4L2_CID_PRIVATE_BACKLIGHT (V4L2_CID_PRIVATE_BASE + 6)
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#define V4L2_CID_PRIVATE_FLICKERLESS (V4L2_CID_PRIVATE_BASE + 7)
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#define V4L2_CID_PRIVATE_NOISE_REDUCTION (V4L2_CID_PRIVATE_BASE + 8)
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struct pwc_raw_frame {
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__le16 type; /* type of the webcam */
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__le16 vbandlength; /* Size of 4lines compressed (used by the decompressor) */
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__u8 cmd[4]; /* the four byte of the command (in case of nala,
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only the first 3 bytes is filled) */
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__u8 rawframe[0]; /* frame_size = H/4*vbandlength */
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} __attribute__ ((packed));
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#endif
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