4 #include <linux/module.h>
5 #include <linux/kernel.h>
7 #include <linux/videodev2.h>
8 #include <media/v4l2-common.h>
9 #include <linux/mutex.h>
11 /* compilation option */
15 /* GSPCA our debug messages */
16 extern int gspca_debug;
17 #define PDEBUG(level, fmt, args...) \
19 if (gspca_debug & (level)) \
20 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
32 #define PDEBUG(level, fmt, args...)
35 #define err(fmt, args...) \
37 printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args); \
40 #define info(fmt, args...) \
42 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
45 #define warn(fmt, args...) \
47 printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args); \
50 #define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
52 #define MAX_NURBS 4 /* max number of URBs */
53 #define ISO_MAX_PKT 32 /* max number of packets in an ISOC transfer */
54 #define ISO_MAX_SIZE 0x8000 /* max size of one URB buffer (32 Kb) */
56 /* device information - set at probe time */
58 int bulk_size; /* buffer size when image transfer by bulk */
59 struct v4l2_pix_format *cam_mode; /* size nmodes */
61 __u8 bulk_nurbs; /* number of URBs in bulk mode
62 * - cannot be > MAX_NURBS
63 * - when 0 and bulk_size != 0 means
64 * 1 URB and submit done by subdriver */
71 /* subdriver operations */
72 typedef int (*cam_op) (struct gspca_dev *);
73 typedef void (*cam_v_op) (struct gspca_dev *);
74 typedef int (*cam_cf_op) (struct gspca_dev *, const struct usb_device_id *);
75 typedef int (*cam_jpg_op) (struct gspca_dev *,
76 struct v4l2_jpegcompression *);
77 typedef int (*cam_streamparm_op) (struct gspca_dev *,
78 struct v4l2_streamparm *);
79 typedef int (*cam_qmnu_op) (struct gspca_dev *,
80 struct v4l2_querymenu *);
81 typedef void (*cam_pkt_op) (struct gspca_dev *gspca_dev,
82 struct gspca_frame *frame,
87 struct v4l2_queryctrl qctrl;
88 int (*set)(struct gspca_dev *, __s32);
89 int (*get)(struct gspca_dev *, __s32 *);
92 /* subdriver description */
95 const char *name; /* sub-driver name */
97 const struct ctrl *ctrls;
99 /* mandatory operations */
100 cam_cf_op config; /* called on probe */
101 cam_op init; /* called on probe and resume */
102 cam_op start; /* called on stream on */
104 /* optional operations */
105 cam_v_op stopN; /* called on stream off - main alt */
106 cam_v_op stop0; /* called on stream off & disconnect - alt 0 */
107 cam_v_op dq_callback; /* called when a frame has been dequeued */
108 cam_jpg_op get_jcomp;
109 cam_jpg_op set_jcomp;
110 cam_qmnu_op querymenu;
111 cam_streamparm_op get_streamparm;
112 cam_streamparm_op set_streamparm;
115 /* packet types when moving from iso buf to frame buf */
116 enum gspca_packet_type {
124 __u8 *data; /* frame buffer */
125 __u8 *data_end; /* end of frame while filling */
127 struct v4l2_buffer v4l2_buf;
131 struct video_device vdev; /* !! must be the first item */
132 struct module *module; /* subdriver handling the device */
133 struct usb_device *dev;
134 struct file *capt_file; /* file doing video capture */
136 struct cam cam; /* device information */
137 const struct sd_desc *sd_desc; /* subdriver description */
138 unsigned ctrl_dis; /* disabled controls (bit map) */
140 #define USB_BUF_SZ 64
141 __u8 *usb_buf; /* buffer for USB exchanges */
142 struct urb *urb[MAX_NURBS];
144 __u8 *frbuf; /* buffer for nframes */
145 struct gspca_frame frame[GSPCA_MAX_FRAMES];
146 __u32 frsz; /* frame size */
147 char nframes; /* number of frames */
148 char fr_i; /* frame being filled */
149 char fr_q; /* next frame to queue */
150 char fr_o; /* next frame to dequeue */
151 signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */
152 __u8 last_packet_type;
153 __s8 empty_packet; /* if (-1) don't check empty packets */
156 __u8 curr_mode; /* current camera mode */
157 __u32 pixfmt; /* current mode parameters */
160 __u32 sequence; /* frame sequence number */
162 wait_queue_head_t wq; /* wait queue */
163 struct mutex usb_lock; /* usb exchange protection */
164 struct mutex read_lock; /* read protection */
165 struct mutex queue_lock; /* ISOC queue protection */
167 char frozen; /* suspend - resume */
169 char users; /* number of opens */
170 char present; /* device connected */
171 char nbufread; /* number of buffers for read() */
172 char nurbs; /* number of allocated URBs */
173 char memory; /* memory type (V4L2_MEMORY_xxx) */
174 __u8 iface; /* USB interface number */
175 __u8 alt; /* USB alternate setting */
176 __u8 nbalt; /* number of USB alternate settings */
179 int gspca_dev_probe(struct usb_interface *intf,
180 const struct usb_device_id *id,
181 const struct sd_desc *sd_desc,
183 struct module *module);
184 void gspca_disconnect(struct usb_interface *intf);
185 struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
186 enum gspca_packet_type packet_type,
187 struct gspca_frame *frame,
190 struct gspca_frame *gspca_get_i_frame(struct gspca_dev *gspca_dev);
192 int gspca_suspend(struct usb_interface *intf, pm_message_t message);
193 int gspca_resume(struct usb_interface *intf);
195 int gspca_auto_gain_n_exposure(struct gspca_dev *gspca_dev, int avg_lum,
196 int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee);
197 #endif /* GSPCAV2_H */