--- /dev/null
+/* (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-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-event.h>
+#include <media/videobuf2-vmalloc.h>
+#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+#include <linux/input.h>
+#endif
+#include "pwc-dec1.h"
+#include "pwc-dec23.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
+
+#define MAX_WIDTH 640
+#define MAX_HEIGHT 480
+
+/* 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)
+
+/* Request types: video */
+#define SET_LUM_CTL 0x01
+#define GET_LUM_CTL 0x02
+#define SET_CHROM_CTL 0x03
+#define GET_CHROM_CTL 0x04
+#define SET_STATUS_CTL 0x05
+#define GET_STATUS_CTL 0x06
+#define SET_EP_STREAM_CTL 0x07
+#define GET_EP_STREAM_CTL 0x08
+#define GET_XX_CTL 0x09
+#define SET_XX_CTL 0x0A
+#define GET_XY_CTL 0x0B
+#define SET_XY_CTL 0x0C
+#define SET_MPT_CTL 0x0D
+#define GET_MPT_CTL 0x0E
+
+/* Selectors for the Luminance controls [GS]ET_LUM_CTL */
+#define AGC_MODE_FORMATTER 0x2000
+#define PRESET_AGC_FORMATTER 0x2100
+#define SHUTTER_MODE_FORMATTER 0x2200
+#define PRESET_SHUTTER_FORMATTER 0x2300
+#define PRESET_CONTOUR_FORMATTER 0x2400
+#define AUTO_CONTOUR_FORMATTER 0x2500
+#define BACK_LIGHT_COMPENSATION_FORMATTER 0x2600
+#define CONTRAST_FORMATTER 0x2700
+#define DYNAMIC_NOISE_CONTROL_FORMATTER 0x2800
+#define FLICKERLESS_MODE_FORMATTER 0x2900
+#define AE_CONTROL_SPEED 0x2A00
+#define BRIGHTNESS_FORMATTER 0x2B00
+#define GAMMA_FORMATTER 0x2C00
+
+/* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */
+#define WB_MODE_FORMATTER 0x1000
+#define AWB_CONTROL_SPEED_FORMATTER 0x1100
+#define AWB_CONTROL_DELAY_FORMATTER 0x1200
+#define PRESET_MANUAL_RED_GAIN_FORMATTER 0x1300
+#define PRESET_MANUAL_BLUE_GAIN_FORMATTER 0x1400
+#define COLOUR_MODE_FORMATTER 0x1500
+#define SATURATION_MODE_FORMATTER1 0x1600
+#define SATURATION_MODE_FORMATTER2 0x1700
+
+/* Selectors for the Status controls [GS]ET_STATUS_CTL */
+#define SAVE_USER_DEFAULTS_FORMATTER 0x0200
+#define RESTORE_USER_DEFAULTS_FORMATTER 0x0300
+#define RESTORE_FACTORY_DEFAULTS_FORMATTER 0x0400
+#define READ_AGC_FORMATTER 0x0500
+#define READ_SHUTTER_FORMATTER 0x0600
+#define READ_RED_GAIN_FORMATTER 0x0700
+#define READ_BLUE_GAIN_FORMATTER 0x0800
+
+/* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */
+#define PT_RELATIVE_CONTROL_FORMATTER 0x01
+#define PT_RESET_CONTROL_FORMATTER 0x02
+#define PT_STATUS_FORMATTER 0x03
+
+/* Enumeration of image sizes */
+#define PSZ_SQCIF 0x00
+#define PSZ_QSIF 0x01
+#define PSZ_QCIF 0x02
+#define PSZ_SIF 0x03
+#define PSZ_CIF 0x04
+#define PSZ_VGA 0x05
+#define PSZ_MAX 6
+
+struct pwc_raw_frame {
+ __le16 type; /* type of the webcam */
+ __le16 vbandlength; /* Size of 4 lines compressed (used by the
+ decompressor) */
+ __u8 cmd[4]; /* the four byte of the command (in case of
+ nala, only the first 3 bytes is filled) */
+ __u8 rawframe[0]; /* frame_size = H / 4 * vbandlength */
+} __packed;
+
+/* 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 v4l2_device v4l2_dev;
+
+ /* videobuf2 queue and queued buffers list */
+ struct vb2_queue vb_queue;
+ struct list_head queued_bufs;
+ spinlock_t queued_bufs_lock; /* Protects queued_bufs */
+
+ /* If taking both locks vb_queue_lock must always be locked first! */
+ struct mutex v4l2_lock; /* Protects everything else */
+ struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
+
+ /* Pointer to our usb_device, will be NULL after unplug */
+ struct usb_device *udev; /* Both mutexes most be hold when setting! */
+
+ /* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
+ int type;
+ int release; /* release number */
+ int features; /* feature bits */
+
+ /*** Video data ***/
+ int vendpoint; /* video isoc endpoint */
+ int vcinterface; /* video control interface */
+ int valternate; /* alternate interface needed */
+ int vframes; /* frames-per-second */
+ 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 vbandlength; /* compressed band length; 0 is uncompressed */
+ char vsync; /* used by isoc handler */
+ char vmirror; /* for ToUCaM series */
+ char power_save; /* Do powersaving for this cam */
+
+ unsigned char cmd_buf[13];
+ unsigned char *ctrl_buf;
+
+ struct urb *urbs[MAX_ISO_BUFS];
+
+ /*
+ * 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;
+
+ union { /* private data for decompression engine */
+ struct pwc_dec1_private dec1;
+ struct pwc_dec23_private dec23;
+ };
+
+ /*
+ * 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 */
+ int width, height; /* current resolution */
+
+#ifdef CONFIG_USB_PWC_INPUT_EVDEV
+ struct input_dev *button_dev; /* webcam snapshot button input */
+ char button_phys[64];
+#endif
+
+ /* controls */
+ struct v4l2_ctrl_handler ctrl_handler;
+ u16 saturation_fmt;
+ struct v4l2_ctrl *brightness;
+ struct v4l2_ctrl *contrast;
+ struct v4l2_ctrl *saturation;
+ struct v4l2_ctrl *gamma;
+ struct {
+ /* awb / red-blue balance cluster */
+ struct v4l2_ctrl *auto_white_balance;
+ struct v4l2_ctrl *red_balance;
+ struct v4l2_ctrl *blue_balance;
+ /* usb ctrl transfers are slow, so we cache things */
+ int color_bal_valid;
+ unsigned long last_color_bal_update; /* In jiffies */
+ s32 last_red_balance;
+ s32 last_blue_balance;
+ };
+ struct {
+ /* autogain / gain cluster */
+ struct v4l2_ctrl *autogain;
+ struct v4l2_ctrl *gain;
+ int gain_valid;
+ unsigned long last_gain_update; /* In jiffies */
+ s32 last_gain;
+ };
+ struct {
+ /* exposure_auto / exposure cluster */
+ struct v4l2_ctrl *exposure_auto;
+ struct v4l2_ctrl *exposure;
+ int exposure_valid;
+ unsigned long last_exposure_update; /* In jiffies */
+ s32 last_exposure;
+ };
+ struct v4l2_ctrl *colorfx;
+ struct {
+ /* autocontour/contour cluster */
+ struct v4l2_ctrl *autocontour;
+ struct v4l2_ctrl *contour;
+ };
+ struct v4l2_ctrl *backlight;
+ struct v4l2_ctrl *flicker;
+ struct v4l2_ctrl *noise_reduction;
+ struct v4l2_ctrl *save_user;
+ struct v4l2_ctrl *restore_user;
+ struct v4l2_ctrl *restore_factory;
+ struct v4l2_ctrl *awb_speed;
+ struct v4l2_ctrl *awb_delay;
+ struct {
+ /* motor control cluster */
+ struct v4l2_ctrl *motor_pan;
+ struct v4l2_ctrl *motor_tilt;
+ struct v4l2_ctrl *motor_pan_reset;
+ struct v4l2_ctrl *motor_tilt_reset;
+ };
+ /* CODEC3 models have both gain and exposure controlled by autogain */
+ struct v4l2_ctrl *autogain_expo_cluster[3];
+};
+
+/* Global variables */
+#ifdef CONFIG_USB_PWC_DEBUG
+extern int pwc_trace;
+#endif
+
+/** Functions in pwc-misc.c */
+/* sizes in pixels */
+extern const int pwc_image_sizes[PSZ_MAX][2];
+
+int pwc_get_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 pixfmt, int frames, int *compression, int send_to_cam);
+extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size);
+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 send_control_msg(struct pwc_device *pdev,
+ u8 request, u16 value, void *buf, int buflen);
+
+/* Control get / set helpers */
+int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data);
+int pwc_set_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, u8 data);
+int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data);
+#define pwc_set_s8_ctrl pwc_set_u8_ctrl
+int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *dat);
+int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data);
+int pwc_button_ctrl(struct pwc_device *pdev, u16 value);
+int pwc_init_controls(struct pwc_device *pdev);
+
+/* Power down or up the camera; not supported by all models */
+extern void pwc_camera_power(struct pwc_device *pdev, int power);
+
+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
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