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#ifndef PWC_IOCTL_H
#define PWC_IOCTL_H
/* (C) 2001 Nemosoft Unv. webcam@smcc.demon.nl
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
Changes
2001/08/03 Alvarado Added ioctl constants to access methods for
changing white balance and red/blue gains
*/
/* These are private ioctl() commands, specific for the Philips webcams.
They contain functions not found in other webcams, and settings not
specified in the Video4Linux API.
The #define names are built up like follows:
VIDIOC VIDeo IOCtl prefix
PWC Philps WebCam
G optional: Get
S optional: Set
... the function
*/
/* The frame rate is encoded in the video_window.flags parameter using
the upper 16 bits, since some flags are defined nowadays. The following
defines provide a mask and shift to filter out this value.
In 'Snapshot' mode the camera freezes its automatic exposure and colour
balance controls.
*/
#define PWC_FPS_SHIFT 16
#define PWC_FPS_MASK 0x00FF0000
#define PWC_FPS_FRMASK 0x003F0000
#define PWC_FPS_SNAPSHOT 0x00400000
/* pwc_whitebalance.mode values */
#define PWC_WB_INDOOR 0
#define PWC_WB_OUTDOOR 1
#define PWC_WB_FL 2
#define PWC_WB_MANUAL 3
#define PWC_WB_AUTO 4
/* Used with VIDIOCPWC[SG]AWB (Auto White Balance).
Set mode to one of the PWC_WB_* values above.
*red and *blue are the respective gains of these colour components inside
the camera; range 0..65535
When mode == PWC_WB_MANUAL, manual_red and manual_blue are set or read;
otherwise undefined.
read_red and read_blue are read-only.
*/
struct pwc_whitebalance
{
int mode;
int manual_red, manual_blue; /* R/W */
int read_red, read_blue; /* R/O */
};
/* Used with VIDIOCPWC[SG]LED */
struct pwc_leds
{
int led_on; /* Led on-time; range = 0..255 */
int led_off; /* */
};
/* Restore user settings */
#define VIDIOCPWCRUSER _IO('v', 192)
/* Save user settings */
#define VIDIOCPWCSUSER _IO('v', 193)
/* Restore factory settings */
#define VIDIOCPWCFACTORY _IO('v', 194)
/* You can manipulate the compression factor. A compression preference of 0
means use uncompressed modes when available; 1 is low compression, 2 is
medium and 3 is high compression preferred. Of course, the higher the
compression, the lower the bandwidth used but more chance of artefacts
in the image. The driver automatically chooses a higher compression when
the preferred mode is not available.
*/
/* Set preferred compression quality (0 = uncompressed, 3 = highest compression) */
#define VIDIOCPWCSCQUAL _IOW('v', 195, int)
/* Get preferred compression quality */
#define VIDIOCPWCGCQUAL _IOR('v', 195, int)
/* Set AGC (Automatic Gain Control); int < 0 = auto, 0..65535 = fixed */
#define VIDIOCPWCSAGC _IOW('v', 200, int)
/* Get AGC; int < 0 = auto; >= 0 = fixed, range 0..65535 */
#define VIDIOCPWCGAGC _IOR('v', 200, int)
/* Set shutter speed; int < 0 = auto; >= 0 = fixed, range 0..65535 */
#define VIDIOCPWCSSHUTTER _IOW('v', 201, int)
/* Color compensation (Auto White Balance) */
#define VIDIOCPWCSAWB _IOW('v', 202, struct pwc_whitebalance)
#define VIDIOCPWCGAWB _IOR('v', 202, struct pwc_whitebalance)
/* Turn LED on/off ; int range 0..65535 */
#define VIDIOCPWCSLED _IOW('v', 205, struct pwc_leds)
/* Get state of LED; int range 0..65535 */
#define VIDIOCPWCGLED _IOR('v', 205, struct pwc_leds)
#endif
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