4 #include <linux/module.h>
5 #include <linux/version.h>
6 #include <linux/kernel.h>
8 #include <linux/videodev2.h>
9 #include <media/v4l2-common.h>
10 #include <linux/mutex.h>
13 /* GSPCA our debug messages */
14 extern int gspca_debug;
15 #define PDEBUG(level, fmt, args...) \
17 if (gspca_debug & (level)) \
18 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
29 #define PDEBUG(level, fmt, args...)
32 #define err(fmt, args...) \
34 printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args); \
37 #define info(fmt, args...) \
39 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
42 #define warn(fmt, args...) \
44 printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args); \
47 #define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
49 #define NURBS 4 /* number of URBs */
50 #define ISO_MAX_PKT 32 /* max number of packets in an ISOC transfer */
51 #define ISO_MAX_SIZE 0x10000 /* max size of one URB buffer (64 Kb) */
53 /* device information - set at probe time */
58 short mode; /* subdriver value */
59 short reserved; /* subdriver value */
63 struct cam_mode *cam_mode; /* size nmodes */
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_qmnu_op) (struct gspca_dev *,
78 struct v4l2_querymenu *);
79 typedef void (*cam_pkt_op) (struct gspca_dev *gspca_dev,
80 struct gspca_frame *frame,
85 struct v4l2_queryctrl qctrl;
86 int (*set)(struct gspca_dev *, __s32);
87 int (*get)(struct gspca_dev *, __s32 *);
90 /* subdriver description */
93 char *name; /* sub-driver name */
98 cam_cf_op config; /* called on probe */
99 cam_op open; /* called on open */
100 cam_v_op start; /* called on stream on */
101 cam_v_op stopN; /* called on stream off - main alt */
102 cam_v_op stop0; /* called on stream off - alt 0 */
103 cam_v_op close; /* called on close */
104 cam_v_op dq_callback; /* called when a frame has been dequeued */
106 cam_jpg_op get_jcomp;
107 cam_jpg_op set_jcomp;
108 cam_qmnu_op querymenu;
111 /* packet types when moving from iso buf to frame buf */
112 #define DISCARD_PACKET 0
113 #define FIRST_PACKET 1
114 #define INTER_PACKET 2
115 #define LAST_PACKET 3
118 unsigned char *data; /* frame buffer */
119 unsigned char *data_end; /* end of frame while filling */
121 struct v4l2_buffer v4l2_buf;
125 struct video_device vdev; /* !! must be the first item */
126 struct usb_device *dev;
127 struct file *capt_file; /* file doing video capture */
129 struct cam cam; /* device information */
130 const struct sd_desc *sd_desc; /* subdriver description */
132 struct urb *urb[NURBS];
134 __u8 *frbuf; /* buffer for nframes */
135 struct gspca_frame frame[GSPCA_MAX_FRAMES];
136 unsigned int frsz; /* frame size */
137 char nframes; /* number of frames */
138 char fr_i; /* frame being filled */
139 char fr_q; /* next frame to queue */
140 char fr_o; /* next frame to dequeue */
141 signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */
142 char last_packet_type;
144 __u8 iface; /* USB interface number */
145 __u8 alt; /* USB alternate setting */
146 unsigned char curr_mode; /* current camera mode */
147 __u32 pixfmt; /* current mode parameters */
151 atomic_t nevent; /* number of frames done */
152 wait_queue_head_t wq; /* wait queue */
153 struct mutex usb_lock; /* usb exchange protection */
154 struct mutex read_lock; /* read protection */
155 struct mutex queue_lock; /* ISOC queue protection */
156 __u32 sequence; /* frame sequence number */
158 char users; /* # open */
159 char present; /* device connected */
160 char nbufread; /* number of buffers for read() */
163 int gspca_dev_probe(struct usb_interface *intf,
164 const struct usb_device_id *id,
165 const struct sd_desc *sd_desc,
167 void gspca_disconnect(struct usb_interface *intf);
168 struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
170 struct gspca_frame *frame,
173 #endif /* GSPCAV2_H */