--- /dev/null
+#ifndef GSPCAV2_H
+#define GSPCAV2_H
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <linux/mutex.h>
+
+
+
+/* GSPCA debug codes */
+
+#define D_PROBE 1
+#define D_CONF 2
+#define D_STREAM 3
+#define D_FRAM 4
+#define D_PACK 5
+#define D_USBI 6
+#define D_USBO 7
+
+extern int gspca_debug;
+
+
+#define PDEBUG(level, fmt, ...) \
+ v4l2_dbg(level, gspca_debug, &gspca_dev->v4l2_dev, fmt, ##__VA_ARGS__)
+
+#define PERR(fmt, ...) \
+ v4l2_err(&gspca_dev->v4l2_dev, fmt, ##__VA_ARGS__)
+
+#define GSPCA_MAX_FRAMES 16 /* maximum number of video frame buffers */
+/* image transfers */
+#define MAX_NURBS 4 /* max number of URBs */
+
+
+/* used to list framerates supported by a camera mode (resolution) */
+struct framerates {
+ const u8 *rates;
+ int nrates;
+};
+
+/* device information - set at probe time */
+struct cam {
+ const struct v4l2_pix_format *cam_mode; /* size nmodes */
+ const struct framerates *mode_framerates; /* must have size nmodes,
+ * just like cam_mode */
+ u32 bulk_size; /* buffer size when image transfer by bulk */
+ u32 input_flags; /* value for ENUM_INPUT status flags */
+ u8 nmodes; /* size of cam_mode */
+ u8 no_urb_create; /* don't create transfer URBs */
+ u8 bulk_nurbs; /* number of URBs in bulk mode
+ * - cannot be > MAX_NURBS
+ * - when 0 and bulk_size != 0 means
+ * 1 URB and submit done by subdriver */
+ u8 bulk; /* image transfer by 0:isoc / 1:bulk */
+ u8 npkt; /* number of packets in an ISOC message
+ * 0 is the default value: 32 packets */
+ u8 needs_full_bandwidth;/* Set this flag to notify the bandwidth calc.
+ * code that the cam fills all image buffers to
+ * the max, even when using compression. */
+};
+
+struct gspca_dev;
+struct gspca_frame;
+
+/* subdriver operations */
+typedef int (*cam_op) (struct gspca_dev *);
+typedef void (*cam_v_op) (struct gspca_dev *);
+typedef int (*cam_cf_op) (struct gspca_dev *, const struct usb_device_id *);
+typedef int (*cam_get_jpg_op) (struct gspca_dev *,
+ struct v4l2_jpegcompression *);
+typedef int (*cam_set_jpg_op) (struct gspca_dev *,
+ const struct v4l2_jpegcompression *);
+typedef int (*cam_get_reg_op) (struct gspca_dev *,
+ struct v4l2_dbg_register *);
+typedef int (*cam_set_reg_op) (struct gspca_dev *,
+ const struct v4l2_dbg_register *);
+typedef int (*cam_chip_info_op) (struct gspca_dev *,
+ struct v4l2_dbg_chip_info *);
+typedef void (*cam_streamparm_op) (struct gspca_dev *,
+ struct v4l2_streamparm *);
+typedef void (*cam_pkt_op) (struct gspca_dev *gspca_dev,
+ u8 *data,
+ int len);
+typedef int (*cam_int_pkt_op) (struct gspca_dev *gspca_dev,
+ u8 *data,
+ int len);
+typedef void (*cam_format_op) (struct gspca_dev *gspca_dev,
+ struct v4l2_format *fmt);
+typedef int (*cam_frmsize_op) (struct gspca_dev *gspca_dev,
+ struct v4l2_frmsizeenum *fsize);
+
+/* subdriver description */
+struct sd_desc {
+/* information */
+ const char *name; /* sub-driver name */
+/* mandatory operations */
+ cam_cf_op config; /* called on probe */
+ cam_op init; /* called on probe and resume */
+ cam_op init_controls; /* called on probe */
+ cam_op start; /* called on stream on after URBs creation */
+ cam_pkt_op pkt_scan;
+/* optional operations */
+ cam_op isoc_init; /* called on stream on before getting the EP */
+ cam_op isoc_nego; /* called when URB submit failed with NOSPC */
+ cam_v_op stopN; /* called on stream off - main alt */
+ cam_v_op stop0; /* called on stream off & disconnect - alt 0 */
+ cam_v_op dq_callback; /* called when a frame has been dequeued */
+ cam_get_jpg_op get_jcomp;
+ cam_set_jpg_op set_jcomp;
+ cam_streamparm_op get_streamparm;
+ cam_streamparm_op set_streamparm;
+ cam_format_op try_fmt;
+ cam_frmsize_op enum_framesizes;
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ cam_set_reg_op set_register;
+ cam_get_reg_op get_register;
+ cam_chip_info_op get_chip_info;
+#endif
+#if IS_ENABLED(CONFIG_INPUT)
+ cam_int_pkt_op int_pkt_scan;
+ /* other_input makes the gspca core create gspca_dev->input even when
+ int_pkt_scan is NULL, for cams with non interrupt driven buttons */
+ u8 other_input;
+#endif
+};
+
+/* packet types when moving from iso buf to frame buf */
+enum gspca_packet_type {
+ DISCARD_PACKET,
+ FIRST_PACKET,
+ INTER_PACKET,
+ LAST_PACKET
+};
+
+struct gspca_frame {
+ __u8 *data; /* frame buffer */
+ int vma_use_count;
+ struct v4l2_buffer v4l2_buf;
+};
+
+struct gspca_dev {
+ struct video_device vdev; /* !! must be the first item */
+ struct module *module; /* subdriver handling the device */
+ struct v4l2_device v4l2_dev;
+ struct usb_device *dev;
+ struct file *capt_file; /* file doing video capture */
+ /* protected by queue_lock */
+#if IS_ENABLED(CONFIG_INPUT)
+ struct input_dev *input_dev;
+ char phys[64]; /* physical device path */
+#endif
+
+ struct cam cam; /* device information */
+ const struct sd_desc *sd_desc; /* subdriver description */
+ struct v4l2_ctrl_handler ctrl_handler;
+
+ /* autogain and exposure or gain control cluster, these are global as
+ the autogain/exposure functions in autogain_functions.c use them */
+ struct {
+ struct v4l2_ctrl *autogain;
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *gain;
+ int exp_too_low_cnt, exp_too_high_cnt;
+ };
+
+#define USB_BUF_SZ 64
+ __u8 *usb_buf; /* buffer for USB exchanges */
+ struct urb *urb[MAX_NURBS];
+#if IS_ENABLED(CONFIG_INPUT)
+ struct urb *int_urb;
+#endif
+
+ __u8 *frbuf; /* buffer for nframes */
+ struct gspca_frame frame[GSPCA_MAX_FRAMES];
+ u8 *image; /* image beeing filled */
+ __u32 frsz; /* frame size */
+ u32 image_len; /* current length of image */
+ atomic_t fr_q; /* next frame to queue */
+ atomic_t fr_i; /* frame being filled */
+ signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */
+ char nframes; /* number of frames */
+ u8 fr_o; /* next frame to dequeue */
+ __u8 last_packet_type;
+ __s8 empty_packet; /* if (-1) don't check empty packets */
+ __u8 streaming; /* protected by both mutexes (*) */
+
+ __u8 curr_mode; /* current camera mode */
+ struct v4l2_pix_format pixfmt; /* current mode parameters */
+ __u32 sequence; /* frame sequence number */
+
+ wait_queue_head_t wq; /* wait queue */
+ struct mutex usb_lock; /* usb exchange protection */
+ struct mutex queue_lock; /* ISOC queue protection */
+ int usb_err; /* USB error - protected by usb_lock */
+ u16 pkt_size; /* ISOC packet size */
+#ifdef CONFIG_PM
+ char frozen; /* suspend - resume */
+#endif
+ char present; /* device connected */
+ char nbufread; /* number of buffers for read() */
+ char memory; /* memory type (V4L2_MEMORY_xxx) */
+ __u8 iface; /* USB interface number */
+ __u8 alt; /* USB alternate setting */
+ int xfer_ep; /* USB transfer endpoint address */
+ u8 audio; /* presence of audio device */
+
+ /* (*) These variables are proteced by both usb_lock and queue_lock,
+ that is any code setting them is holding *both*, which means that
+ any code getting them needs to hold at least one of them */
+};
+
+int gspca_dev_probe(struct usb_interface *intf,
+ const struct usb_device_id *id,
+ const struct sd_desc *sd_desc,
+ int dev_size,
+ struct module *module);
+int gspca_dev_probe2(struct usb_interface *intf,
+ const struct usb_device_id *id,
+ const struct sd_desc *sd_desc,
+ int dev_size,
+ struct module *module);
+void gspca_disconnect(struct usb_interface *intf);
+void gspca_frame_add(struct gspca_dev *gspca_dev,
+ enum gspca_packet_type packet_type,
+ const u8 *data,
+ int len);
+#ifdef CONFIG_PM
+int gspca_suspend(struct usb_interface *intf, pm_message_t message);
+int gspca_resume(struct usb_interface *intf);
+#endif
+int gspca_expo_autogain(struct gspca_dev *gspca_dev, int avg_lum,
+ int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee);
+int gspca_coarse_grained_expo_autogain(struct gspca_dev *gspca_dev,
+ int avg_lum, int desired_avg_lum, int deadzone);
+
+#endif /* GSPCAV2_H */
Code Review / kvmfornfv.git / blobdiff