1 #ifndef GSPCAV2_H 2 #define GSPCAV2_H 3 4 #include <linux/module.h> 5 #include <linux/kernel.h> 6 #include <linux/usb.h> 7 #include <linux/videodev2.h> 8 #include <media/v4l2-common.h> 9 #include <linux/mutex.h> 10 11 /* compilation option */ 12 #define GSPCA_DEBUG 1 13 14 #ifdef GSPCA_DEBUG 15 /* GSPCA our debug messages */ 16 extern int gspca_debug; 17 #define PDEBUG(level, fmt, args...) \ 18 do {\ 19 if (gspca_debug & (level)) \ 20 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \ 21 } while (0) 22 #define D_ERR 0x01 23 #define D_PROBE 0x02 24 #define D_CONF 0x04 25 #define D_STREAM 0x08 26 #define D_FRAM 0x10 27 #define D_PACK 0x20 28 #define D_USBI 0x40 29 #define D_USBO 0x80 30 #define D_V4L2 0x0100 31 #else 32 #define PDEBUG(level, fmt, args...) 33 #endif 34 #undef err 35 #define err(fmt, args...) \ 36 do {\ 37 printk(KERN_ERR MODULE_NAME ": " fmt "\n", ## args); \ 38 } while (0) 39 #undef info 40 #define info(fmt, args...) \ 41 do {\ 42 printk(KERN_INFO MODULE_NAME ": " fmt "\n", ## args); \ 43 } while (0) 44 #undef warn 45 #define warn(fmt, args...) \ 46 do {\ 47 printk(KERN_WARNING MODULE_NAME ": " fmt "\n", ## args); \ 48 } while (0) 49 50 #define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */ 51 /* image transfers */ 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) */ 55 56 /* device information - set at probe time */ 57 struct cam { 58 int bulk_size; /* buffer size when image transfer by bulk */ 59 const struct v4l2_pix_format *cam_mode; /* size nmodes */ 60 char 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 */ 65 __u8 epaddr; 66 }; 67 68 struct gspca_dev; 69 struct gspca_frame; 70 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, 83 __u8 *data, 84 int len); 85 86 struct ctrl { 87 struct v4l2_queryctrl qctrl; 88 int (*set)(struct gspca_dev *, __s32); 89 int (*get)(struct gspca_dev *, __s32 *); 90 }; 91 92 /* subdriver description */ 93 struct sd_desc { 94 /* information */ 95 const char *name; /* sub-driver name */ 96 /* controls */ 97 const struct ctrl *ctrls; 98 int nctrls; 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 */ 103 cam_pkt_op pkt_scan; 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; 113 }; 114 115 /* packet types when moving from iso buf to frame buf */ 116 enum gspca_packet_type { 117 DISCARD_PACKET, 118 FIRST_PACKET, 119 INTER_PACKET, 120 LAST_PACKET 121 }; 122 123 struct gspca_frame { 124 __u8 *data; /* frame buffer */ 125 __u8 *data_end; /* end of frame while filling */ 126 int vma_use_count; 127 struct v4l2_buffer v4l2_buf; 128 }; 129 130 struct gspca_dev { 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 */ 135 136 struct cam cam; /* device information */ 137 const struct sd_desc *sd_desc; /* subdriver description */ 138 unsigned ctrl_dis; /* disabled controls (bit map) */ 139 140 #define USB_BUF_SZ 64 141 __u8 *usb_buf; /* buffer for USB exchanges */ 142 struct urb *urb[MAX_NURBS]; 143 144 __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 */ 154 __u8 streaming; 155 156 __u8 curr_mode; /* current camera mode */ 157 __u32 pixfmt; /* current mode parameters */ 158 __u16 width; 159 __u16 height; 160 __u32 sequence; /* frame sequence number */ 161 162 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 */ 166 #ifdef CONFIG_PM 167 char frozen; /* suspend - resume */ 168 #endif 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 */ 177 }; 178 179 int gspca_dev_probe(struct usb_interface *intf, 180 const struct usb_device_id *id, 181 const struct sd_desc *sd_desc, 182 int dev_size, 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, 188 const __u8 *data, 189 int len); 190 struct gspca_frame *gspca_get_i_frame(struct gspca_dev *gspca_dev); 191 #ifdef CONFIG_PM 192 int gspca_suspend(struct usb_interface *intf, pm_message_t message); 193 int gspca_resume(struct usb_interface *intf); 194 #endif 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 */ 198