/* (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 . 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 #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_USB_PWC_INPUT_EVDEV #include #endif #include "pwc-uncompress.h" #include /* 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) */ /*** Video data ***/ struct file *capt_file; /* file doing video capture */ 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 */ char power_save; /* Do powersaving for this cam */ 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 void 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