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Diffstat (limited to 'drivers/media/video/pwc/pwc.h')
| -rw-r--r-- | drivers/media/video/pwc/pwc.h | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/drivers/media/video/pwc/pwc.h b/drivers/media/video/pwc/pwc.h new file mode 100644 index 0000000..7417875 --- /dev/null +++ b/drivers/media/video/pwc/pwc.h @@ -0,0 +1,356 @@ +/* (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/smp_lock.h> +#include <linux/version.h> +#include <linux/mutex.h> +#include <linux/mm.h> +#include <asm/errno.h> +#include <linux/videodev.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> + +#include "pwc-uncompress.h" +#include <media/pwc-ioctl.h> + +/* Version block */ +#define PWC_MAJOR 10 +#define PWC_MINOR 0 +#define PWC_EXTRAMINOR 12 +#define PWC_VERSION_CODE KERNEL_VERSION(PWC_MAJOR,PWC_MINOR,PWC_EXTRAMINOR) +#define PWC_VERSION "10.0.13" +#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 + +/* Turn certain features on/off */ +#define PWC_INT_PIPE 0 + +/* 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 2 +#define ISO_FRAMES_PER_DESC 10 +#define ISO_MAX_FRAME_SIZE 960 +#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE) + +/* Frame buffers: contains compressed or uncompressed video data. */ +#define MAX_FRAMES 5 +/* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */ +#define PWC_FRAME_SIZE (460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE) + +/* Absolute maximum number of buffers available for mmap() */ +#define MAX_IMAGES 10 + +/* 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) + + +#ifndef V4L2_PIX_FMT_PWC1 +#define V4L2_PIX_FMT_PWC1 v4l2_fourcc('P','W','C','1') +#define V4L2_PIX_FMT_PWC2 v4l2_fourcc('P','W','C','2') +#endif + +/* 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 +{ + void *data; + volatile int filled; /* number of bytes filled */ + struct pwc_frame_buf *next; /* list */ +}; + +/* additionnal informations used when dealing image between kernel and userland */ +struct pwc_imgbuf +{ + unsigned long offset; /* offset of this buffer in the big array of image_data */ + int vma_use_count; /* count the number of time this memory is mapped */ +}; + +struct pwc_device +{ + struct video_device *vdev; + + /* Pointer to our usb_device */ + struct usb_device *udev; + + int type; /* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */ + int release; /* release number */ + int features; /* feature bits */ + char serial[30]; /* serial number (string) */ + int error_status; /* set when something goes wrong with the cam (unplugged, USB errors) */ + int usb_init; /* set when the cam has been initialized over USB */ + + /*** 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 vpalette; /* palette: 420P, RAW or RGBBAYER */ + int vframe_count; /* received frames */ + int vframes_dumped; /* counter for dumped frames */ + int vframes_error; /* frames received in error */ + 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 */ + char unplugged; + + int cmd_len; + unsigned char cmd_buf[13]; + + /* The image acquisition requires 3 to 4 steps: + 1. data is gathered in short packets from the USB controller + 2. data is synchronized and packed into a frame buffer + 3a. in case data is compressed, decompress it directly into image buffer + 3b. in case data is uncompressed, copy into image buffer with viewport + 4. data is transferred to the user process + + Note that MAX_ISO_BUFS != MAX_FRAMES != MAX_IMAGES.... + We have in effect a back-to-back-double-buffer system. + */ + /* 1: isoc */ + struct pwc_iso_buf sbuf[MAX_ISO_BUFS]; + char iso_init; + + /* 2: frame */ + struct pwc_frame_buf *fbuf; /* all frames */ + struct pwc_frame_buf *empty_frames, *empty_frames_tail; /* all empty frames */ + struct pwc_frame_buf *full_frames, *full_frames_tail; /* all filled frames */ + struct pwc_frame_buf *fill_frame; /* frame currently being filled */ + struct pwc_frame_buf *read_frame; /* frame currently read by user process */ + int frame_header_size, frame_trailer_size; + int frame_size; + int frame_total_size; /* including header & trailer */ + int drop_frames; + + /* 3: decompression */ + void *decompress_data; /* private data for decompression engine */ + + /* 4: image */ + /* We have an 'image' and a 'view', where 'image' is the fixed-size image + 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; /* bitmask of supported sizes */ + struct pwc_coord view_min, view_max; /* minimum and maximum viewable sizes */ + struct pwc_coord abs_max; /* maximum supported size with compression */ + struct pwc_coord image, view; /* image and viewport size */ + struct pwc_coord offset; /* offset within the viewport */ + + void *image_data; /* total buffer, which is subdivided into ... */ + struct pwc_imgbuf images[MAX_IMAGES];/* ...several images... */ + int fill_image; /* ...which are rotated. */ + int len_per_image; /* length per image */ + int image_read_pos; /* In case we read data in pieces, keep track of were we are in the imagebuffer */ + int image_used[MAX_IMAGES]; /* For MCAPTURE and SYNC */ + + struct mutex modlock; /* to prevent races in video_open(), etc */ + spinlock_t ptrlock; /* for manipulating the buffer pointers */ + + /*** 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 position */ + int snapshot_button_status; /* set to 1 when the user push the button, reset to 0 when this value is read */ + + /*** Misc. data ***/ + wait_queue_head_t frameq; /* When waiting for a frame to finish... */ +#if PWC_INT_PIPE + void *usb_int_handler; /* for the interrupt endpoint */ +#endif +}; + +#ifdef __cplusplus +extern "C" { +#endif + +/* Global variables */ +#ifdef CONFIG_USB_PWC_DEBUG +extern int pwc_trace; +#endif +extern int pwc_mbufs; + +/** functions in pwc-if.c */ +int pwc_try_video_mode(struct pwc_device *pdev, int width, int height, int new_fps, int new_compression, int new_snapshot); +int pwc_handle_frame(struct pwc_device *pdev); +void pwc_next_image(struct pwc_device *pdev); +int pwc_isoc_init(struct pwc_device *pdev); +void pwc_isoc_cleanup(struct pwc_device *pdev); + +/** 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 int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg); + +/** Functions in pwc-v4l.c */ +extern int pwc_video_do_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, void *arg); + +/** pwc-uncompress.c */ +/* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */ +extern int pwc_decompress(struct pwc_device *pdev); + +#ifdef __cplusplus +} +#endif + + +#endif +/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |
