[mirror_ubuntu-zesty-kernel.git] / drivers / media / video / pwc / pwc.h

/* (C) 1999-2003 Nemosoft Unv.
   (C) 2004-2006 Luc Saillard (luc@saillard.org)

   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   driver and thus may have bugs that are not present in the original version.
   Please send bug reports and support requests to <luc@saillard.org>.
   The decompression routines have been implemented by reverse-engineering the
   Nemosoft binary pwcx module. Caveat emptor.

   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
*/

#ifndef PWC_H
#define PWC_H

#include <linux/module.h>
#include <linux/usb.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/mutex.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <asm/errno.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-vmalloc.h>
#ifdef CONFIG_USB_PWC_INPUT_EVDEV
#include <linux/input.h>
#endif

#include "pwc-uncompress.h"
#include <media/pwc-ioctl.h>

/* Version block */
#define PWC_VERSION	"10.0.15"
#define PWC_NAME 	"pwc"
#define PFX		PWC_NAME ": "


/* Trace certain actions in the driver */
#define PWC_DEBUG_LEVEL_MODULE	(1<<0)
#define PWC_DEBUG_LEVEL_PROBE	(1<<1)
#define PWC_DEBUG_LEVEL_OPEN	(1<<2)
#define PWC_DEBUG_LEVEL_READ	(1<<3)
#define PWC_DEBUG_LEVEL_MEMORY	(1<<4)
#define PWC_DEBUG_LEVEL_FLOW	(1<<5)
#define PWC_DEBUG_LEVEL_SIZE	(1<<6)
#define PWC_DEBUG_LEVEL_IOCTL	(1<<7)
#define PWC_DEBUG_LEVEL_TRACE	(1<<8)

#define PWC_DEBUG_MODULE(fmt, args...) PWC_DEBUG(MODULE, fmt, ##args)
#define PWC_DEBUG_PROBE(fmt, args...) PWC_DEBUG(PROBE, fmt, ##args)
#define PWC_DEBUG_OPEN(fmt, args...) PWC_DEBUG(OPEN, fmt, ##args)
#define PWC_DEBUG_READ(fmt, args...) PWC_DEBUG(READ, fmt, ##args)
#define PWC_DEBUG_MEMORY(fmt, args...) PWC_DEBUG(MEMORY, fmt, ##args)
#define PWC_DEBUG_FLOW(fmt, args...) PWC_DEBUG(FLOW, fmt, ##args)
#define PWC_DEBUG_SIZE(fmt, args...) PWC_DEBUG(SIZE, fmt, ##args)
#define PWC_DEBUG_IOCTL(fmt, args...) PWC_DEBUG(IOCTL, fmt, ##args)
#define PWC_DEBUG_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args)


#ifdef CONFIG_USB_PWC_DEBUG

#define PWC_DEBUG_LEVEL	(PWC_DEBUG_LEVEL_MODULE)

#define PWC_DEBUG(level, fmt, args...) do {\
	if ((PWC_DEBUG_LEVEL_ ##level) & pwc_trace) \
		printk(KERN_DEBUG PFX fmt, ##args); \
	} while (0)

#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args)
#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args)
#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args)
#define PWC_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args)

#else /* if ! CONFIG_USB_PWC_DEBUG */

#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args)
#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args)
#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args)
#define PWC_TRACE(fmt, args...) do { } while(0)
#define PWC_DEBUG(level, fmt, args...) do { } while(0)

#define pwc_trace 0

#endif

/* Defines for ToUCam cameras */
#define TOUCAM_HEADER_SIZE		8
#define TOUCAM_TRAILER_SIZE		4

#define FEATURE_MOTOR_PANTILT		0x0001
#define FEATURE_CODEC1			0x0002
#define FEATURE_CODEC2			0x0004

/* Ignore errors in the first N frames, to allow for startup delays */
#define FRAME_LOWMARK 5

/* Size and number of buffers for the ISO pipe. */
#define MAX_ISO_BUFS		3
#define ISO_FRAMES_PER_DESC	10
#define ISO_MAX_FRAME_SIZE	960
#define ISO_BUFFER_SIZE 	(ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)

/* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */
#define PWC_FRAME_SIZE 		(460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE)

/* Absolute minimum and maximum number of buffers available for mmap() */
#define MIN_FRAMES		2
#define MAX_FRAMES		16

/* Some macros to quickly find the type of a webcam */
#define DEVICE_USE_CODEC1(x) ((x)<675)
#define DEVICE_USE_CODEC2(x) ((x)>=675 && (x)<700)
#define DEVICE_USE_CODEC3(x) ((x)>=700)
#define DEVICE_USE_CODEC23(x) ((x)>=675)

/* The following structures were based on cpia.h. Why reinvent the wheel? :-) */
struct pwc_iso_buf
{
	void *data;
	int  length;
	int  read;
	struct urb *urb;
};

/* intermediate buffers with raw data from the USB cam */
struct pwc_frame_buf
{
	struct vb2_buffer vb;	/* common v4l buffer stuff -- must be first */
	struct list_head list;
	void *data;
	int filled;		/* number of bytes filled */
};

struct pwc_device
{
	struct video_device vdev;
	struct mutex modlock;

	/* Pointer to our usb_device, may be NULL after unplug */
	struct usb_device *udev;
	/* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
	int type;
	int release;		/* release number */
	int features;		/* feature bits */
	char serial[30];	/* serial number (string) */
	int usb_init;		/* set when the cam has been initialized */

	/*** Video data ***/
	int vopen;		/* flag */
	int vendpoint;		/* video isoc endpoint */
	int vcinterface;	/* video control interface */
	int valternate;		/* alternate interface needed */
	int vframes, vsize;	/* frames-per-second & size (see PSZ_*) */
	int pixfmt;		/* pixelformat: V4L2_PIX_FMT_YUV420 or _PWCX */
	int vframe_count;	/* received frames */
	int vmax_packet_size;	/* USB maxpacket size */
	int vlast_packet_size;	/* for frame synchronisation */
	int visoc_errors;	/* number of contiguous ISOC errors */
	int vcompression;	/* desired compression factor */
	int vbandlength;	/* compressed band length; 0 is uncompressed */
	char vsnapshot;		/* snapshot mode */
	char vsync;		/* used by isoc handler */
	char vmirror;		/* for ToUCaM series */

	int cmd_len;
	unsigned char cmd_buf[13];

	struct pwc_iso_buf sbuf[MAX_ISO_BUFS];
	char iso_init;

	/* videobuf2 queue and queued buffers list */
	struct vb2_queue vb_queue;
	struct list_head queued_bufs;
	spinlock_t queued_bufs_lock;

	/*
	 * Frame currently being filled, this only gets touched by the
	 * isoc urb complete handler, and by stream start / stop since
	 * start / stop touch it before / after starting / killing the urbs
	 * no locking is needed around this
	 */
	struct pwc_frame_buf *fill_buf;

	int frame_header_size, frame_trailer_size;
	int frame_size;
	int frame_total_size;	/* including header & trailer */
	int drop_frames;

	void *decompress_data;	/* private data for decompression engine */

	/*
	 * We have an 'image' and a 'view', where 'image' is the fixed-size img
	 * as delivered by the camera, and 'view' is the size requested by the
	 * program. The camera image is centered in this viewport, laced with
	 * a gray or black border. view_min <= image <= view <= view_max;
	 */
	int image_mask;				/* supported sizes */
	struct pwc_coord view_min, view_max;	/* minimum and maximum view */
	struct pwc_coord abs_max;		/* maximum supported size */
	struct pwc_coord image, view;		/* image and viewport size */
	struct pwc_coord offset;		/* offset of the viewport */

	/*** motorized pan/tilt feature */
	struct pwc_mpt_range angle_range;
	int pan_angle;			/* in degrees * 100 */
	int tilt_angle;			/* absolute angle; 0,0 is home */

	/*
	 * Set to 1 when the user push the button, reset to 0
	 * when this value is read from sysfs.
	 */
	int snapshot_button_status;
#ifdef CONFIG_USB_PWC_INPUT_EVDEV
	struct input_dev *button_dev;	/* webcam snapshot button input */
	char button_phys[64];
#endif
};

/* Global variables */
#ifdef CONFIG_USB_PWC_DEBUG
extern int pwc_trace;
#endif

/** Functions in pwc-misc.c */
/* sizes in pixels */
extern const struct pwc_coord pwc_image_sizes[PSZ_MAX];

int pwc_decode_size(struct pwc_device *pdev, int width, int height);
void pwc_construct(struct pwc_device *pdev);

/** Functions in pwc-ctrl.c */
/* Request a certain video mode. Returns < 0 if not possible */
extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot);
extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size);
/* Calculate the number of bytes per image (not frame) */
extern int pwc_mpt_reset(struct pwc_device *pdev, int flags);
extern int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt);

/* Various controls; should be obvious. Value 0..65535, or < 0 on error */
extern int pwc_get_brightness(struct pwc_device *pdev);
extern int pwc_set_brightness(struct pwc_device *pdev, int value);
extern int pwc_get_contrast(struct pwc_device *pdev);
extern int pwc_set_contrast(struct pwc_device *pdev, int value);
extern int pwc_get_gamma(struct pwc_device *pdev);
extern int pwc_set_gamma(struct pwc_device *pdev, int value);
extern int pwc_get_saturation(struct pwc_device *pdev, int *value);
extern int pwc_set_saturation(struct pwc_device *pdev, int value);
extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor);
extern int pwc_restore_user(struct pwc_device *pdev);
extern int pwc_save_user(struct pwc_device *pdev);
extern int pwc_restore_factory(struct pwc_device *pdev);

/* exported for use by v4l2 controls */
extern int pwc_get_red_gain(struct pwc_device *pdev, int *value);
extern int pwc_set_red_gain(struct pwc_device *pdev, int value);
extern int pwc_get_blue_gain(struct pwc_device *pdev, int *value);
extern int pwc_set_blue_gain(struct pwc_device *pdev, int value);
extern int pwc_get_awb(struct pwc_device *pdev);
extern int pwc_set_awb(struct pwc_device *pdev, int mode);
extern int pwc_set_agc(struct pwc_device *pdev, int mode, int value);
extern int pwc_get_agc(struct pwc_device *pdev, int *value);
extern int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value);
extern int pwc_get_shutter_speed(struct pwc_device *pdev, int *value);

extern int pwc_set_colour_mode(struct pwc_device *pdev, int colour);
extern int pwc_get_colour_mode(struct pwc_device *pdev, int *colour);
extern int pwc_set_contour(struct pwc_device *pdev, int contour);
extern int pwc_get_contour(struct pwc_device *pdev, int *contour);
extern int pwc_set_backlight(struct pwc_device *pdev, int backlight);
extern int pwc_get_backlight(struct pwc_device *pdev, int *backlight);
extern int pwc_set_flicker(struct pwc_device *pdev, int flicker);
extern int pwc_get_flicker(struct pwc_device *pdev, int *flicker);
extern int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise);
extern int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise);

/* Power down or up the camera; not supported by all models */
extern int pwc_camera_power(struct pwc_device *pdev, int power);

/* Private ioctl()s; see pwc-ioctl.h */
extern long pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg);

extern const struct v4l2_ioctl_ops pwc_ioctl_ops;

/** pwc-uncompress.c */
/* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */
int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf);

#endif
Commit	Line	Data
1da177e4	1	/* (C) 1999-2003 Nemosoft Unv.
2b455db6	2	(C) 2004-2006 Luc Saillard (luc@saillard.org)
1da177e4 LT	3
	4	NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
	5	driver and thus may have bugs that are not present in the original version.
	6	Please send bug reports and support requests to <luc@saillard.org>.
	7	The decompression routines have been implemented by reverse-engineering the
	8	Nemosoft binary pwcx module. Caveat emptor.
	9
	10	This program is free software; you can redistribute it and/or modify
	11	it under the terms of the GNU General Public License as published by
	12	the Free Software Foundation; either version 2 of the License, or
	13	(at your option) any later version.
	14
	15	This program is distributed in the hope that it will be useful,
	16	but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	GNU General Public License for more details.
	19
	20	You should have received a copy of the GNU General Public License
	21	along with this program; if not, write to the Free Software
	22	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	23	*/
	24
	25	#ifndef PWC_H
	26	#define PWC_H
	27
1da177e4 LT	28	#include <linux/module.h>
	29	#include <linux/usb.h>
	30	#include <linux/spinlock.h>
1da177e4	31	#include <linux/wait.h>
b9378fdb	32	#include <linux/mutex.h>
38413fd2	33	#include <linux/mm.h>
5a0e3ad6	34	#include <linux/slab.h>
1da177e4	35	#include <asm/errno.h>
479567ce	36	#include <linux/videodev2.h>
5e87efa3	37	#include <media/v4l2-common.h>
35ea11ff	38	#include <media/v4l2-ioctl.h>
885fe18f	39	#include <media/videobuf2-vmalloc.h>
e32a7ecc NPT	40	#ifdef CONFIG_USB_PWC_INPUT_EVDEV
	41	#include <linux/input.h>
	42	#endif
1da177e4 LT	43
1da177e4 LT	44	#include "pwc-uncompress.h"
2b455db6	45	#include <media/pwc-ioctl.h>
1da177e4	46
2b455db6	47	/* Version block */
880c35c5	48	#define PWC_VERSION "10.0.15"
2b455db6 LS	49	#define PWC_NAME "pwc"
	50	#define PFX PWC_NAME ": "
	51
1da177e4 LT	52
1da177e4 LT	53	/* Trace certain actions in the driver */
2b455db6 LS	54	#define PWC_DEBUG_LEVEL_MODULE (1<<0)
	55	#define PWC_DEBUG_LEVEL_PROBE (1<<1)
	56	#define PWC_DEBUG_LEVEL_OPEN (1<<2)
	57	#define PWC_DEBUG_LEVEL_READ (1<<3)
	58	#define PWC_DEBUG_LEVEL_MEMORY (1<<4)
	59	#define PWC_DEBUG_LEVEL_FLOW (1<<5)
	60	#define PWC_DEBUG_LEVEL_SIZE (1<<6)
	61	#define PWC_DEBUG_LEVEL_IOCTL (1<<7)
	62	#define PWC_DEBUG_LEVEL_TRACE (1<<8)
	63
	64	#define PWC_DEBUG_MODULE(fmt, args...) PWC_DEBUG(MODULE, fmt, ##args)
	65	#define PWC_DEBUG_PROBE(fmt, args...) PWC_DEBUG(PROBE, fmt, ##args)
	66	#define PWC_DEBUG_OPEN(fmt, args...) PWC_DEBUG(OPEN, fmt, ##args)
	67	#define PWC_DEBUG_READ(fmt, args...) PWC_DEBUG(READ, fmt, ##args)
	68	#define PWC_DEBUG_MEMORY(fmt, args...) PWC_DEBUG(MEMORY, fmt, ##args)
	69	#define PWC_DEBUG_FLOW(fmt, args...) PWC_DEBUG(FLOW, fmt, ##args)
	70	#define PWC_DEBUG_SIZE(fmt, args...) PWC_DEBUG(SIZE, fmt, ##args)
	71	#define PWC_DEBUG_IOCTL(fmt, args...) PWC_DEBUG(IOCTL, fmt, ##args)
	72	#define PWC_DEBUG_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args)
	73
	74
05ad3907	75	#ifdef CONFIG_USB_PWC_DEBUG
2b455db6 LS	76
	77	#define PWC_DEBUG_LEVEL (PWC_DEBUG_LEVEL_MODULE)
	78
	79	#define PWC_DEBUG(level, fmt, args...) do {\
1a4ede65 HG	80	if ((PWC_DEBUG_LEVEL_ ##level) & pwc_trace) \
	81	printk(KERN_DEBUG PFX fmt, ##args); \
	82	} while (0)
2b455db6 LS	83
	84	#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args)
	85	#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args)
	86	#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args)
	87	#define PWC_TRACE(fmt, args...) PWC_DEBUG(TRACE, fmt, ##args)
	88
9ee6d78c	89	#else /* if ! CONFIG_USB_PWC_DEBUG */
2b455db6 LS	90
	91	#define PWC_ERROR(fmt, args...) printk(KERN_ERR PFX fmt, ##args)
	92	#define PWC_WARNING(fmt, args...) printk(KERN_WARNING PFX fmt, ##args)
	93	#define PWC_INFO(fmt, args...) printk(KERN_INFO PFX fmt, ##args)
	94	#define PWC_TRACE(fmt, args...) do { } while(0)
	95	#define PWC_DEBUG(level, fmt, args...) do { } while(0)
	96
	97	#define pwc_trace 0
1da177e4	98
2b455db6	99	#endif
1da177e4 LT	100
	101	/* Defines for ToUCam cameras */
	102	#define TOUCAM_HEADER_SIZE 8
	103	#define TOUCAM_TRAILER_SIZE 4
	104
	105	#define FEATURE_MOTOR_PANTILT 0x0001
2b455db6 LS	106	#define FEATURE_CODEC1 0x0002
2b455db6 LS	107	#define FEATURE_CODEC2 0x0004
1da177e4	108
1da177e4 LT	109	/* Ignore errors in the first N frames, to allow for startup delays */
	110	#define FRAME_LOWMARK 5
	111
	112	/* Size and number of buffers for the ISO pipe. */
885fe18f	113	#define MAX_ISO_BUFS 3
1da177e4 LT	114	#define ISO_FRAMES_PER_DESC 10
	115	#define ISO_MAX_FRAME_SIZE 960
	116	#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
	117
1da177e4 LT	118	/* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */
	119	#define PWC_FRAME_SIZE (460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE)
	120
885fe18f HG	121	/* Absolute minimum and maximum number of buffers available for mmap() */
	122	#define MIN_FRAMES 2
	123	#define MAX_FRAMES 16
1da177e4	124
2b455db6 LS	125	/* Some macros to quickly find the type of a webcam */
	126	#define DEVICE_USE_CODEC1(x) ((x)<675)
	127	#define DEVICE_USE_CODEC2(x) ((x)>=675 && (x)<700)
	128	#define DEVICE_USE_CODEC3(x) ((x)>=700)
	129	#define DEVICE_USE_CODEC23(x) ((x)>=675)
	130
1da177e4 LT	131	/* The following structures were based on cpia.h. Why reinvent the wheel? :-) */
	132	struct pwc_iso_buf
	133	{
	134	void *data;
	135	int length;
	136	int read;
	137	struct urb *urb;
	138	};
	139
	140	/* intermediate buffers with raw data from the USB cam */
	141	struct pwc_frame_buf
	142	{
885fe18f HG	143	struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */
	144	struct list_head list;
	145	void *data;
	146	int filled; /* number of bytes filled */
1da177e4 LT	147	};
	148
	149	struct pwc_device
	150	{
9a7b2d1f	151	struct video_device vdev;
1a4ede65 HG	152	struct mutex modlock;
	153
	154	/* Pointer to our usb_device, may be NULL after unplug */
	155	struct usb_device *udev;
	156	/* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
	157	int type;
	158	int release; /* release number */
	159	int features; /* feature bits */
	160	char serial[30]; /* serial number (string) */
1a4ede65 HG	161	int usb_init; /* set when the cam has been initialized */
	162
	163	/* Video data */
	164	int vopen; /* flag */
	165	int vendpoint; /* video isoc endpoint */
	166	int vcinterface; /* video control interface */
	167	int valternate; /* alternate interface needed */
	168	int vframes, vsize; /* frames-per-second & size (see PSZ_) /
	169	int pixfmt; /* pixelformat: V4L2_PIX_FMT_YUV420 or _PWCX */
	170	int vframe_count; /* received frames */
	171	int vmax_packet_size; /* USB maxpacket size */
	172	int vlast_packet_size; /* for frame synchronisation */
	173	int visoc_errors; /* number of contiguous ISOC errors */
	174	int vcompression; /* desired compression factor */
	175	int vbandlength; /* compressed band length; 0 is uncompressed */
	176	char vsnapshot; /* snapshot mode */
	177	char vsync; /* used by isoc handler */
	178	char vmirror; /* for ToUCaM series */
d56410e0	179
1a4ede65 HG	180	int cmd_len;
1a4ede65 HG	181	unsigned char cmd_buf[13];
1da177e4	182
1a4ede65 HG	183	struct pwc_iso_buf sbuf[MAX_ISO_BUFS];
1a4ede65 HG	184	char iso_init;
1da177e4	185
885fe18f HG	186	/* videobuf2 queue and queued buffers list */
	187	struct vb2_queue vb_queue;
	188	struct list_head queued_bufs;
	189	spinlock_t queued_bufs_lock;
	190
	191	/*
	192	* Frame currently being filled, this only gets touched by the
	193	* isoc urb complete handler, and by stream start / stop since
	194	* start / stop touch it before / after starting / killing the urbs
	195	* no locking is needed around this
	196	*/
	197	struct pwc_frame_buf *fill_buf;
	198
1a4ede65 HG	199	int frame_header_size, frame_trailer_size;
	200	int frame_size;
	201	int frame_total_size; /* including header & trailer */
	202	int drop_frames;
	203
	204	void decompress_data; / private data for decompression engine */
	205
	206	/*
	207	* We have an 'image' and a 'view', where 'image' is the fixed-size img
	208	* as delivered by the camera, and 'view' is the size requested by the
	209	* program. The camera image is centered in this viewport, laced with
	210	* a gray or black border. view_min <= image <= view <= view_max;
	211	*/
	212	int image_mask; /* supported sizes */
	213	struct pwc_coord view_min, view_max; /* minimum and maximum view */
	214	struct pwc_coord abs_max; /* maximum supported size */
	215	struct pwc_coord image, view; /* image and viewport size */
	216	struct pwc_coord offset; /* offset of the viewport */
	217
	218	/*** motorized pan/tilt feature */
	219	struct pwc_mpt_range angle_range;
	220	int pan_angle; /* in degrees * 100 */
	221	int tilt_angle; /* absolute angle; 0,0 is home */
	222
	223	/*
	224	* Set to 1 when the user push the button, reset to 0
	225	* when this value is read from sysfs.
	226	*/
	227	int snapshot_button_status;
e32a7ecc	228	#ifdef CONFIG_USB_PWC_INPUT_EVDEV
1a4ede65 HG	229	struct input_dev button_dev; / webcam snapshot button input */
1a4ede65 HG	230	char button_phys[64];
e32a7ecc	231	#endif
1da177e4 LT	232	};
1da177e4 LT	233
2b455db6	234	/* Global variables */
05ad3907	235	#ifdef CONFIG_USB_PWC_DEBUG
1da177e4	236	extern int pwc_trace;
2b455db6	237	#endif
1da177e4 LT	238
	239	/** Functions in pwc-misc.c */
	240	/* sizes in pixels */
2b455db6	241	extern const struct pwc_coord pwc_image_sizes[PSZ_MAX];
1da177e4 LT	242
	243	int pwc_decode_size(struct pwc_device *pdev, int width, int height);
	244	void pwc_construct(struct pwc_device *pdev);
	245
	246	/** Functions in pwc-ctrl.c */
	247	/* Request a certain video mode. Returns < 0 if not possible */
	248	extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot);
9ee6d78c	249	extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size);
2b455db6 LS	250	/* Calculate the number of bytes per image (not frame) */
	251	extern int pwc_mpt_reset(struct pwc_device *pdev, int flags);
	252	extern int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt);
1da177e4 LT	253
	254	/* Various controls; should be obvious. Value 0..65535, or < 0 on error */
	255	extern int pwc_get_brightness(struct pwc_device *pdev);
	256	extern int pwc_set_brightness(struct pwc_device *pdev, int value);
	257	extern int pwc_get_contrast(struct pwc_device *pdev);
	258	extern int pwc_set_contrast(struct pwc_device *pdev, int value);
	259	extern int pwc_get_gamma(struct pwc_device *pdev);
	260	extern int pwc_set_gamma(struct pwc_device *pdev, int value);
2b455db6	261	extern int pwc_get_saturation(struct pwc_device pdev, int value);
1da177e4 LT	262	extern int pwc_set_saturation(struct pwc_device *pdev, int value);
1da177e4 LT	263	extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
1da177e4	264	extern int pwc_get_cmos_sensor(struct pwc_device pdev, int sensor);
2b455db6 LS	265	extern int pwc_restore_user(struct pwc_device *pdev);
	266	extern int pwc_save_user(struct pwc_device *pdev);
	267	extern int pwc_restore_factory(struct pwc_device *pdev);
	268
	269	/* exported for use by v4l2 controls */
	270	extern int pwc_get_red_gain(struct pwc_device pdev, int value);
	271	extern int pwc_set_red_gain(struct pwc_device *pdev, int value);
	272	extern int pwc_get_blue_gain(struct pwc_device pdev, int value);
	273	extern int pwc_set_blue_gain(struct pwc_device *pdev, int value);
	274	extern int pwc_get_awb(struct pwc_device *pdev);
	275	extern int pwc_set_awb(struct pwc_device *pdev, int mode);
	276	extern int pwc_set_agc(struct pwc_device *pdev, int mode, int value);
	277	extern int pwc_get_agc(struct pwc_device pdev, int value);
	278	extern int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value);
	279	extern int pwc_get_shutter_speed(struct pwc_device pdev, int value);
	280
	281	extern int pwc_set_colour_mode(struct pwc_device *pdev, int colour);
	282	extern int pwc_get_colour_mode(struct pwc_device pdev, int colour);
	283	extern int pwc_set_contour(struct pwc_device *pdev, int contour);
	284	extern int pwc_get_contour(struct pwc_device pdev, int contour);
	285	extern int pwc_set_backlight(struct pwc_device *pdev, int backlight);
	286	extern int pwc_get_backlight(struct pwc_device pdev, int backlight);
	287	extern int pwc_set_flicker(struct pwc_device *pdev, int flicker);
	288	extern int pwc_get_flicker(struct pwc_device pdev, int flicker);
	289	extern int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise);
	290	extern int pwc_get_dynamic_noise(struct pwc_device pdev, int noise);
1da177e4 LT	291
	292	/* Power down or up the camera; not supported by all models */
	293	extern int pwc_camera_power(struct pwc_device *pdev, int power);
	294
	295	/* Private ioctl()s; see pwc-ioctl.h */
069b7479	296	extern long pwc_ioctl(struct pwc_device pdev, unsigned int cmd, void arg);
1da177e4	297
afa38521	298	extern const struct v4l2_ioctl_ops pwc_ioctl_ops;
1da177e4 LT	299
	300	/** pwc-uncompress.c */
	301	/* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */
885fe18f	302	int pwc_decompress(struct pwc_device pdev, struct pwc_frame_buf fbuf);
1da177e4	303
1da177e4	304	#endif