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>
12 #ifdef CONFIG_VIDEO_ADV_DEBUG
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); \
30 #define PDEBUG(level, fmt, args...)
33 #define err(fmt, args...) \
35 printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args); \
38 #define info(fmt, args...) \
40 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \
43 #define warn(fmt, args...) \
45 printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args); \
48 #define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
50 #define MAX_NURBS 16 /* max number of URBs */
51 #define ISO_MAX_PKT 32 /* max number of packets in an ISOC transfer */
52 #define ISO_MAX_SIZE 0x8000 /* max size of one URB buffer (32 Kb) */
54 /* device information - set at probe time */
59 short mode; /* 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,
83 typedef int (*cam_get_buff_size_op) (struct gspca_dev *gspca_dev, int mode);
86 struct v4l2_queryctrl qctrl;
87 int (*set)(struct gspca_dev *, __s32);
88 int (*get)(struct gspca_dev *, __s32 *);
91 /* subdriver description */
94 const char *name; /* sub-driver name */
96 const struct ctrl *ctrls;
99 cam_cf_op config; /* called on probe */
100 cam_op open; /* called on open */
101 cam_v_op start; /* called on stream on */
102 cam_v_op stopN; /* called on stream off - main alt */
103 cam_v_op stop0; /* called on stream off - alt 0 */
104 cam_v_op close; /* called on close */
105 cam_v_op dq_callback; /* called when a frame has been dequeued */
107 cam_jpg_op get_jcomp;
108 cam_jpg_op set_jcomp;
109 cam_qmnu_op querymenu;
110 cam_get_buff_size_op get_buff_size; /* optional */
113 /* packet types when moving from iso buf to frame buf */
114 #define DISCARD_PACKET 0
115 #define FIRST_PACKET 1
116 #define INTER_PACKET 2
117 #define LAST_PACKET 3
120 __u8 *data; /* frame buffer */
121 __u8 *data_end; /* end of frame while filling */
123 struct v4l2_buffer v4l2_buf;
127 struct video_device vdev; /* !! must be the first item */
128 struct file_operations fops;
129 struct usb_device *dev;
130 struct file *capt_file; /* file doing video capture */
132 struct cam cam; /* device information */
133 const struct sd_desc *sd_desc; /* subdriver description */
135 struct urb *urb[MAX_NURBS];
137 __u8 *frbuf; /* buffer for nframes */
138 struct gspca_frame frame[GSPCA_MAX_FRAMES];
139 __u32 frsz; /* frame size */
140 char nframes; /* number of frames */
141 char fr_i; /* frame being filled */
142 char fr_q; /* next frame to queue */
143 char fr_o; /* next frame to dequeue */
144 signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */
145 char last_packet_type;
147 __u8 iface; /* USB interface number */
148 __u8 alt; /* USB alternate setting */
149 __u8 curr_mode; /* current camera mode */
150 __u32 pixfmt; /* current mode parameters */
154 atomic_t nevent; /* number of frames done */
155 wait_queue_head_t wq; /* wait queue */
156 struct mutex usb_lock; /* usb exchange protection */
157 struct mutex read_lock; /* read protection */
158 struct mutex queue_lock; /* ISOC queue protection */
159 __u32 sequence; /* frame sequence number */
161 char users; /* number of opens */
162 char present; /* device connected */
163 char nbufread; /* number of buffers for read() */
164 char nurbs; /* number of allocated URBs */
165 char memory; /* memory type (V4L2_MEMORY_xxx) */
166 __u8 urb_in; /* URB pointers - used when !mmap */
168 __u8 nbalt; /* number of USB alternate settings */
171 int gspca_dev_probe(struct usb_interface *intf,
172 const struct usb_device_id *id,
173 const struct sd_desc *sd_desc,
175 struct module *module);
176 void gspca_disconnect(struct usb_interface *intf);
177 struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
179 struct gspca_frame *frame,
182 #endif /* GSPCAV2_H */