drivers/media/video/pwc/pwc.h

   1 /* (C) 1999-2003 Nemosoft Unv.
   2    (C) 2004-2006 Luc Saillard (luc@saillard.org)
   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
  28 #include <linux/module.h>
  29 #include <linux/usb.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/wait.h>
  32 #include <linux/mutex.h>
  33 #include <linux/mm.h>
  34 #include <linux/slab.h>
  35 #include <asm/errno.h>
  36 #include <linux/videodev2.h>
  37 #include <media/v4l2-common.h>
  38 #include <media/v4l2-ioctl.h>
  39 #include <media/v4l2-ctrls.h>
  40 #include <media/videobuf2-vmalloc.h>
  41 #ifdef CONFIG_USB_PWC_INPUT_EVDEV
  42 #include <linux/input.h>
  43 #endif
  44
  45 #include <media/pwc-ioctl.h>
  46
  47 /* Version block */
  48 #define PWC_VERSION     "10.0.15"
  49 #define PWC_NAME        "pwc"
  50 #define PFX             PWC_NAME ": "
  51
  52
  53 /* Trace certain actions in the driver */
  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
  75 #ifdef CONFIG_USB_PWC_DEBUG
  76
  77 #define PWC_DEBUG_LEVEL (PWC_DEBUG_LEVEL_MODULE)
  78
  79 #define PWC_DEBUG(level, fmt, args...) do {\
  80         if ((PWC_DEBUG_LEVEL_ ##level) & pwc_trace) \
  81                 printk(KERN_DEBUG PFX fmt, ##args); \
  82         } while (0)
  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
  89 #else /* if ! CONFIG_USB_PWC_DEBUG */
  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
  98
  99 #endif
 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
 106 #define FEATURE_CODEC1                  0x0002
 107 #define FEATURE_CODEC2                  0x0004
 108
 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. */
 113 #define MAX_ISO_BUFS            3
 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
 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
 121 /* Absolute minimum and maximum number of buffers available for mmap() */
 122 #define MIN_FRAMES              2
 123 #define MAX_FRAMES              16
 124
 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
 131 /* from pwc-dec.h */
 132 #define PWCX_FLAG_PLANAR        0x0001
 133
 134 /* Request types: video */
 135 #define SET_LUM_CTL                     0x01
 136 #define GET_LUM_CTL                     0x02
 137 #define SET_CHROM_CTL                   0x03
 138 #define GET_CHROM_CTL                   0x04
 139 #define SET_STATUS_CTL                  0x05
 140 #define GET_STATUS_CTL                  0x06
 141 #define SET_EP_STREAM_CTL               0x07
 142 #define GET_EP_STREAM_CTL               0x08
 143 #define GET_XX_CTL                      0x09
 144 #define SET_XX_CTL                      0x0A
 145 #define GET_XY_CTL                      0x0B
 146 #define SET_XY_CTL                      0x0C
 147 #define SET_MPT_CTL                     0x0D
 148 #define GET_MPT_CTL                     0x0E
 149
 150 /* Selectors for the Luminance controls [GS]ET_LUM_CTL */
 151 #define AGC_MODE_FORMATTER                      0x2000
 152 #define PRESET_AGC_FORMATTER                    0x2100
 153 #define SHUTTER_MODE_FORMATTER                  0x2200
 154 #define PRESET_SHUTTER_FORMATTER                0x2300
 155 #define PRESET_CONTOUR_FORMATTER                0x2400
 156 #define AUTO_CONTOUR_FORMATTER                  0x2500
 157 #define BACK_LIGHT_COMPENSATION_FORMATTER       0x2600
 158 #define CONTRAST_FORMATTER                      0x2700
 159 #define DYNAMIC_NOISE_CONTROL_FORMATTER         0x2800
 160 #define FLICKERLESS_MODE_FORMATTER              0x2900
 161 #define AE_CONTROL_SPEED                        0x2A00
 162 #define BRIGHTNESS_FORMATTER                    0x2B00
 163 #define GAMMA_FORMATTER                         0x2C00
 164
 165 /* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */
 166 #define WB_MODE_FORMATTER                       0x1000
 167 #define AWB_CONTROL_SPEED_FORMATTER             0x1100
 168 #define AWB_CONTROL_DELAY_FORMATTER             0x1200
 169 #define PRESET_MANUAL_RED_GAIN_FORMATTER        0x1300
 170 #define PRESET_MANUAL_BLUE_GAIN_FORMATTER       0x1400
 171 #define COLOUR_MODE_FORMATTER                   0x1500
 172 #define SATURATION_MODE_FORMATTER1              0x1600
 173 #define SATURATION_MODE_FORMATTER2              0x1700
 174
 175 /* Selectors for the Status controls [GS]ET_STATUS_CTL */
 176 #define SAVE_USER_DEFAULTS_FORMATTER            0x0200
 177 #define RESTORE_USER_DEFAULTS_FORMATTER         0x0300
 178 #define RESTORE_FACTORY_DEFAULTS_FORMATTER      0x0400
 179 #define READ_AGC_FORMATTER                      0x0500
 180 #define READ_SHUTTER_FORMATTER                  0x0600
 181 #define READ_RED_GAIN_FORMATTER                 0x0700
 182 #define READ_BLUE_GAIN_FORMATTER                0x0800
 183
 184 /* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */
 185 #define PT_RELATIVE_CONTROL_FORMATTER           0x01
 186 #define PT_RESET_CONTROL_FORMATTER              0x02
 187 #define PT_STATUS_FORMATTER                     0x03
 188
 189 /* intermediate buffers with raw data from the USB cam */
 190 struct pwc_frame_buf
 191 {
 192         struct vb2_buffer vb;   /* common v4l buffer stuff -- must be first */
 193         struct list_head list;
 194         void *data;
 195         int filled;             /* number of bytes filled */
 196 };
 197
 198 struct pwc_device
 199 {
 200         struct video_device vdev;
 201         struct mutex modlock;
 202
 203         /* Pointer to our usb_device, may be NULL after unplug */
 204         struct usb_device *udev;
 205         /* Protects the setting of udev to NULL by our disconnect handler */
 206         struct mutex udevlock;
 207
 208         /* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
 209         int type;
 210         int release;            /* release number */
 211         int features;           /* feature bits */
 212         char serial[30];        /* serial number (string) */
 213
 214         /*** Video data ***/
 215         struct file *capt_file; /* file doing video capture */
 216         int vendpoint;          /* video isoc endpoint */
 217         int vcinterface;        /* video control interface */
 218         int valternate;         /* alternate interface needed */
 219         int vframes, vsize;     /* frames-per-second & size (see PSZ_*) */
 220         int pixfmt;             /* pixelformat: V4L2_PIX_FMT_YUV420 or _PWCX */
 221         int vframe_count;       /* received frames */
 222         int vmax_packet_size;   /* USB maxpacket size */
 223         int vlast_packet_size;  /* for frame synchronisation */
 224         int visoc_errors;       /* number of contiguous ISOC errors */
 225         int vcompression;       /* desired compression factor */
 226         int vbandlength;        /* compressed band length; 0 is uncompressed */
 227         char vsnapshot;         /* snapshot mode */
 228         char vsync;             /* used by isoc handler */
 229         char vmirror;           /* for ToUCaM series */
 230         char power_save;        /* Do powersaving for this cam */
 231
 232         int cmd_len;
 233         unsigned char cmd_buf[13];
 234
 235         struct urb *urbs[MAX_ISO_BUFS];
 236         char iso_init;
 237
 238         /* videobuf2 queue and queued buffers list */
 239         struct vb2_queue vb_queue;
 240         struct list_head queued_bufs;
 241         spinlock_t queued_bufs_lock;
 242
 243         /*
 244          * Frame currently being filled, this only gets touched by the
 245          * isoc urb complete handler, and by stream start / stop since
 246          * start / stop touch it before / after starting / killing the urbs
 247          * no locking is needed around this
 248          */
 249         struct pwc_frame_buf *fill_buf;
 250
 251         int frame_header_size, frame_trailer_size;
 252         int frame_size;
 253         int frame_total_size;   /* including header & trailer */
 254         int drop_frames;
 255
 256         void *decompress_data;  /* private data for decompression engine */
 257
 258         /*
 259          * We have an 'image' and a 'view', where 'image' is the fixed-size img
 260          * as delivered by the camera, and 'view' is the size requested by the
 261          * program. The camera image is centered in this viewport, laced with
 262          * a gray or black border. view_min <= image <= view <= view_max;
 263          */
 264         int image_mask;                         /* supported sizes */
 265         struct pwc_coord view_min, view_max;    /* minimum and maximum view */
 266         struct pwc_coord abs_max;               /* maximum supported size */
 267         struct pwc_coord image, view;           /* image and viewport size */
 268         struct pwc_coord offset;                /* offset of the viewport */
 269
 270         /*** motorized pan/tilt feature */
 271         struct pwc_mpt_range angle_range;
 272         int pan_angle;                  /* in degrees * 100 */
 273         int tilt_angle;                 /* absolute angle; 0,0 is home */
 274
 275         /*
 276          * Set to 1 when the user push the button, reset to 0
 277          * when this value is read from sysfs.
 278          */
 279         int snapshot_button_status;
 280 #ifdef CONFIG_USB_PWC_INPUT_EVDEV
 281         struct input_dev *button_dev;   /* webcam snapshot button input */
 282         char button_phys[64];
 283 #endif
 284
 285         /* controls */
 286         struct v4l2_ctrl_handler        ctrl_handler;
 287         u16                             saturation_fmt;
 288         struct v4l2_ctrl                *brightness;
 289         struct v4l2_ctrl                *contrast;
 290         struct v4l2_ctrl                *saturation;
 291         struct v4l2_ctrl                *gamma;
 292         struct {
 293                 /* awb / red-blue balance cluster */
 294                 struct v4l2_ctrl        *auto_white_balance;
 295                 struct v4l2_ctrl        *red_balance;
 296                 struct v4l2_ctrl        *blue_balance;
 297                 /* usb ctrl transfers are slow, so we cache things */
 298                 int                     color_bal_valid;
 299                 unsigned long           last_color_bal_update; /* In jiffies */
 300                 s32                     last_red_balance;
 301                 s32                     last_blue_balance;
 302         };
 303         struct {
 304                 /* autogain / gain cluster */
 305                 struct v4l2_ctrl        *autogain;
 306                 struct v4l2_ctrl        *gain;
 307                 int                     gain_valid;
 308                 unsigned long           last_gain_update; /* In jiffies */
 309                 s32                     last_gain;
 310         };
 311         struct {
 312                 /* exposure_auto / exposure cluster */
 313                 struct v4l2_ctrl        *exposure_auto;
 314                 struct v4l2_ctrl        *exposure;
 315                 int                     exposure_valid;
 316                 unsigned long           last_exposure_update; /* In jiffies */
 317                 s32                     last_exposure;
 318         };
 319         struct v4l2_ctrl                *colorfx;
 320         struct {
 321                 /* autocontour/contour cluster */
 322                 struct v4l2_ctrl        *autocontour;
 323                 struct v4l2_ctrl        *contour;
 324         };
 325         struct v4l2_ctrl                *backlight;
 326         struct v4l2_ctrl                *flicker;
 327         struct v4l2_ctrl                *noise_reduction;
 328         struct v4l2_ctrl                *save_user;
 329         struct v4l2_ctrl                *restore_user;
 330         struct v4l2_ctrl                *restore_factory;
 331         struct {
 332                 /* motor control cluster */
 333                 struct v4l2_ctrl        *motor_pan;
 334                 struct v4l2_ctrl        *motor_tilt;
 335                 struct v4l2_ctrl        *motor_pan_reset;
 336                 struct v4l2_ctrl        *motor_tilt_reset;
 337         };
 338         /* CODEC3 models have both gain and exposure controlled by autogain */
 339         struct v4l2_ctrl                *autogain_expo_cluster[3];
 340 };
 341
 342 /* Global variables */
 343 #ifdef CONFIG_USB_PWC_DEBUG
 344 extern int pwc_trace;
 345 #endif
 346
 347 /** Functions in pwc-misc.c */
 348 /* sizes in pixels */
 349 extern const struct pwc_coord pwc_image_sizes[PSZ_MAX];
 350
 351 int pwc_decode_size(struct pwc_device *pdev, int width, int height);
 352 void pwc_construct(struct pwc_device *pdev);
 353
 354 /** Functions in pwc-ctrl.c */
 355 /* Request a certain video mode. Returns < 0 if not possible */
 356 extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot);
 357 extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size);
 358 extern int pwc_mpt_reset(struct pwc_device *pdev, int flags);
 359 extern int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt);
 360 extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
 361 extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor);
 362 extern int send_control_msg(struct pwc_device *pdev,
 363                             u8 request, u16 value, void *buf, int buflen);
 364
 365 /* Control get / set helpers */
 366 int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data);
 367 int pwc_set_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, u8 data);
 368 int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data);
 369 #define pwc_set_s8_ctrl pwc_set_u8_ctrl
 370 int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *dat);
 371 int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data);
 372 int pwc_button_ctrl(struct pwc_device *pdev, u16 value);
 373 int pwc_init_controls(struct pwc_device *pdev);
 374
 375 /* Power down or up the camera; not supported by all models */
 376 extern void pwc_camera_power(struct pwc_device *pdev, int power);
 377
 378 /* Private ioctl()s; see pwc-ioctl.h */
 379 extern long pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg);
 380
 381 extern const struct v4l2_ioctl_ops pwc_ioctl_ops;
 382
 383 /** pwc-uncompress.c */
 384 /* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */
 385 int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf);
 386
 387 #endif