1 /* (C) 1999-2003 Nemosoft Unv.
2 (C) 2004-2006 Luc Saillard (luc@saillard.org)
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.
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.
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.
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
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>
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/videobuf2-vmalloc.h>
40 #ifdef CONFIG_USB_PWC_INPUT_EVDEV
41 #include <linux/input.h>
44 #include "pwc-uncompress.h"
45 #include <media/pwc-ioctl.h>
48 #define PWC_VERSION "10.0.15"
49 #define PWC_NAME "pwc"
50 #define PFX PWC_NAME ": "
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)
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)
75 #ifdef CONFIG_USB_PWC_DEBUG
77 #define PWC_DEBUG_LEVEL (PWC_DEBUG_LEVEL_MODULE)
79 #define PWC_DEBUG(level, fmt, args...) do {\
80 if ((PWC_DEBUG_LEVEL_ ##level) & pwc_trace) \
81 printk(KERN_DEBUG PFX fmt, ##args); \
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)
89 #else /* if ! CONFIG_USB_PWC_DEBUG */
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)
101 /* Defines for ToUCam cameras */
102 #define TOUCAM_HEADER_SIZE 8
103 #define TOUCAM_TRAILER_SIZE 4
105 #define FEATURE_MOTOR_PANTILT 0x0001
106 #define FEATURE_CODEC1 0x0002
107 #define FEATURE_CODEC2 0x0004
109 /* Turn certain features on/off */
110 #define PWC_INT_PIPE 0
112 /* Ignore errors in the first N frames, to allow for startup delays */
113 #define FRAME_LOWMARK 5
115 /* Size and number of buffers for the ISO pipe. */
116 #define MAX_ISO_BUFS 3
117 #define ISO_FRAMES_PER_DESC 10
118 #define ISO_MAX_FRAME_SIZE 960
119 #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
121 /* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */
122 #define PWC_FRAME_SIZE (460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE)
124 /* Absolute minimum and maximum number of buffers available for mmap() */
126 #define MAX_FRAMES 16
128 /* Some macros to quickly find the type of a webcam */
129 #define DEVICE_USE_CODEC1(x) ((x)<675)
130 #define DEVICE_USE_CODEC2(x) ((x)>=675 && (x)<700)
131 #define DEVICE_USE_CODEC3(x) ((x)>=700)
132 #define DEVICE_USE_CODEC23(x) ((x)>=675)
134 /* The following structures were based on cpia.h. Why reinvent the wheel? :-) */
143 /* intermediate buffers with raw data from the USB cam */
146 struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */
147 struct list_head list;
149 int filled; /* number of bytes filled */
154 struct video_device vdev;
155 struct mutex modlock;
157 /* Pointer to our usb_device, may be NULL after unplug */
158 struct usb_device *udev;
159 /* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
161 int release; /* release number */
162 int features; /* feature bits */
163 char serial[30]; /* serial number (string) */
164 int usb_init; /* set when the cam has been initialized */
167 int vopen; /* flag */
168 int vendpoint; /* video isoc endpoint */
169 int vcinterface; /* video control interface */
170 int valternate; /* alternate interface needed */
171 int vframes, vsize; /* frames-per-second & size (see PSZ_*) */
172 int pixfmt; /* pixelformat: V4L2_PIX_FMT_YUV420 or _PWCX */
173 int vframe_count; /* received frames */
174 int vmax_packet_size; /* USB maxpacket size */
175 int vlast_packet_size; /* for frame synchronisation */
176 int visoc_errors; /* number of contiguous ISOC errors */
177 int vcompression; /* desired compression factor */
178 int vbandlength; /* compressed band length; 0 is uncompressed */
179 char vsnapshot; /* snapshot mode */
180 char vsync; /* used by isoc handler */
181 char vmirror; /* for ToUCaM series */
184 unsigned char cmd_buf[13];
186 struct pwc_iso_buf sbuf[MAX_ISO_BUFS];
189 /* videobuf2 queue and queued buffers list */
190 struct vb2_queue vb_queue;
191 struct list_head queued_bufs;
192 spinlock_t queued_bufs_lock;
195 * Frame currently being filled, this only gets touched by the
196 * isoc urb complete handler, and by stream start / stop since
197 * start / stop touch it before / after starting / killing the urbs
198 * no locking is needed around this
200 struct pwc_frame_buf *fill_buf;
202 int frame_header_size, frame_trailer_size;
204 int frame_total_size; /* including header & trailer */
207 void *decompress_data; /* private data for decompression engine */
210 * We have an 'image' and a 'view', where 'image' is the fixed-size img
211 * as delivered by the camera, and 'view' is the size requested by the
212 * program. The camera image is centered in this viewport, laced with
213 * a gray or black border. view_min <= image <= view <= view_max;
215 int image_mask; /* supported sizes */
216 struct pwc_coord view_min, view_max; /* minimum and maximum view */
217 struct pwc_coord abs_max; /* maximum supported size */
218 struct pwc_coord image, view; /* image and viewport size */
219 struct pwc_coord offset; /* offset of the viewport */
221 /*** motorized pan/tilt feature */
222 struct pwc_mpt_range angle_range;
223 int pan_angle; /* in degrees * 100 */
224 int tilt_angle; /* absolute angle; 0,0 is home */
227 * Set to 1 when the user push the button, reset to 0
228 * when this value is read from sysfs.
230 int snapshot_button_status;
231 #ifdef CONFIG_USB_PWC_INPUT_EVDEV
232 struct input_dev *button_dev; /* webcam snapshot button input */
233 char button_phys[64];
238 void *usb_int_handler; /* for the interrupt endpoint */
242 /* Global variables */
243 #ifdef CONFIG_USB_PWC_DEBUG
244 extern int pwc_trace;
247 /** Functions in pwc-misc.c */
248 /* sizes in pixels */
249 extern const struct pwc_coord pwc_image_sizes[PSZ_MAX];
251 int pwc_decode_size(struct pwc_device *pdev, int width, int height);
252 void pwc_construct(struct pwc_device *pdev);
254 /** Functions in pwc-ctrl.c */
255 /* Request a certain video mode. Returns < 0 if not possible */
256 extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot);
257 extern unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size);
258 /* Calculate the number of bytes per image (not frame) */
259 extern int pwc_mpt_reset(struct pwc_device *pdev, int flags);
260 extern int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt);
262 /* Various controls; should be obvious. Value 0..65535, or < 0 on error */
263 extern int pwc_get_brightness(struct pwc_device *pdev);
264 extern int pwc_set_brightness(struct pwc_device *pdev, int value);
265 extern int pwc_get_contrast(struct pwc_device *pdev);
266 extern int pwc_set_contrast(struct pwc_device *pdev, int value);
267 extern int pwc_get_gamma(struct pwc_device *pdev);
268 extern int pwc_set_gamma(struct pwc_device *pdev, int value);
269 extern int pwc_get_saturation(struct pwc_device *pdev, int *value);
270 extern int pwc_set_saturation(struct pwc_device *pdev, int value);
271 extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
272 extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor);
273 extern int pwc_restore_user(struct pwc_device *pdev);
274 extern int pwc_save_user(struct pwc_device *pdev);
275 extern int pwc_restore_factory(struct pwc_device *pdev);
277 /* exported for use by v4l2 controls */
278 extern int pwc_get_red_gain(struct pwc_device *pdev, int *value);
279 extern int pwc_set_red_gain(struct pwc_device *pdev, int value);
280 extern int pwc_get_blue_gain(struct pwc_device *pdev, int *value);
281 extern int pwc_set_blue_gain(struct pwc_device *pdev, int value);
282 extern int pwc_get_awb(struct pwc_device *pdev);
283 extern int pwc_set_awb(struct pwc_device *pdev, int mode);
284 extern int pwc_set_agc(struct pwc_device *pdev, int mode, int value);
285 extern int pwc_get_agc(struct pwc_device *pdev, int *value);
286 extern int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value);
287 extern int pwc_get_shutter_speed(struct pwc_device *pdev, int *value);
289 extern int pwc_set_colour_mode(struct pwc_device *pdev, int colour);
290 extern int pwc_get_colour_mode(struct pwc_device *pdev, int *colour);
291 extern int pwc_set_contour(struct pwc_device *pdev, int contour);
292 extern int pwc_get_contour(struct pwc_device *pdev, int *contour);
293 extern int pwc_set_backlight(struct pwc_device *pdev, int backlight);
294 extern int pwc_get_backlight(struct pwc_device *pdev, int *backlight);
295 extern int pwc_set_flicker(struct pwc_device *pdev, int flicker);
296 extern int pwc_get_flicker(struct pwc_device *pdev, int *flicker);
297 extern int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise);
298 extern int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise);
300 /* Power down or up the camera; not supported by all models */
301 extern int pwc_camera_power(struct pwc_device *pdev, int power);
303 /* Private ioctl()s; see pwc-ioctl.h */
304 extern long pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg);
306 extern const struct v4l2_ioctl_ops pwc_ioctl_ops;
308 /** pwc-uncompress.c */
309 /* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */
310 int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf);