#ifndef _UVC_COMPAT_H
#define _UVC_COMPAT_H
#include <linux/version.h>
#ifndef __KERNEL__
#ifndef __user
#define __user
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
/*
* Extended control API
*/
struct v4l2_ext_control {
__u32 id;
__u32 reserved2[2];
union {
__s32 value;
__s64 value64;
void *reserved;
};
} __attribute__ ((packed));
struct v4l2_ext_controls {
__u32 ctrl_class;
__u32 count;
__u32 error_idx;
__u32 reserved[2];
struct v4l2_ext_control *controls;
};
/* Values for ctrl_class field */
#define V4L2_CTRL_CLASS_USER 0x00980000 /* Old-style 'user' controls */
#define V4L2_CTRL_CLASS_MPEG 0x00990000 /* MPEG-compression controls */
#define V4L2_CTRL_ID_MASK (0x0fffffff)
#define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL)
#define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000)
/* Control flags */
#define V4L2_CTRL_FLAG_READ_ONLY 0x0004
#define V4L2_CTRL_FLAG_UPDATE 0x0008
#define V4L2_CTRL_FLAG_INACTIVE 0x0010
#define V4L2_CTRL_FLAG_SLIDER 0x0020
/* Query flags, to be ORed with the control ID */
#define V4L2_CTRL_FLAG_NEXT_CTRL 0x80000000
/* User-class control IDs defined by V4L2 */
#undef V4L2_CID_BASE
#define V4L2_CID_BASE (V4L2_CTRL_CLASS_USER | 0x900)
#define V4L2_CID_USER_BASE V4L2_CID_BASE
#define V4L2_CID_USER_CLASS (V4L2_CTRL_CLASS_USER | 1)
#define VIDIOC_G_EXT_CTRLS _IOWR('V', 71, struct v4l2_ext_controls)
#define VIDIOC_S_EXT_CTRLS _IOWR('V', 72, struct v4l2_ext_controls)
#define VIDIOC_TRY_EXT_CTRLS _IOWR('V', 73, struct v4l2_ext_controls)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
/*
* Frame size and frame rate enumeration
*
* Included in Linux 2.6.19
*/
enum v4l2_frmsizetypes {
V4L2_FRMSIZE_TYPE_DISCRETE = 1,
V4L2_FRMSIZE_TYPE_CONTINUOUS = 2,
V4L2_FRMSIZE_TYPE_STEPWISE = 3,
};
struct v4l2_frmsize_discrete {
__u32 width; /* Frame width [pixel] */
__u32 height; /* Frame height [pixel] */
};
struct v4l2_frmsize_stepwise {
__u32 min_width; /* Minimum frame width [pixel] */
__u32 max_width; /* Maximum frame width [pixel] */
__u32 step_width; /* Frame width step size [pixel] */
__u32 min_height; /* Minimum frame height [pixel] */
__u32 max_height; /* Maximum frame height [pixel] */
__u32 step_height; /* Frame height step size [pixel] */
};
struct v4l2_frmsizeenum {
__u32 index; /* Frame size number */
__u32 pixel_format; /* Pixel format */
__u32 type; /* Frame size type the device supports. */
union { /* Frame size */
struct v4l2_frmsize_discrete discrete;
struct v4l2_frmsize_stepwise stepwise;
};
__u32 reserved[2]; /* Reserved space for future use */
};
enum v4l2_frmivaltypes {
V4L2_FRMIVAL_TYPE_DISCRETE = 1,
V4L2_FRMIVAL_TYPE_CONTINUOUS = 2,
V4L2_FRMIVAL_TYPE_STEPWISE = 3,
};
struct v4l2_frmival_stepwise {
struct v4l2_fract min; /* Minimum frame interval [s] */
struct v4l2_fract max; /* Maximum frame interval [s] */
struct v4l2_fract step; /* Frame interval step size [s] */
};
struct v4l2_frmivalenum {
__u32 index; /* Frame format index */
__u32 pixel_format; /* Pixel format */
__u32 width; /* Frame width */
__u32 height; /* Frame height */
__u32 type; /* Frame interval type the device supports. */
union { /* Frame interval */
struct v4l2_fract discrete;
struct v4l2_frmival_stepwise stepwise;
};
__u32 reserved[2]; /* Reserved space for future use */
};
#define VIDIOC_ENUM_FRAMESIZES _IOWR('V', 74, struct v4l2_frmsizeenum)
#define VIDIOC_ENUM_FRAMEINTERVALS _IOWR('V', 75, struct v4l2_frmivalenum)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
/*
* V4L2 Control identifiers.
*/
#define V4L2_CTRL_CLASS_CAMERA 0x009A0000 /* Camera class controls */
#define V4L2_CID_POWER_LINE_FREQUENCY (V4L2_CID_BASE+24)
enum v4l2_power_line_frequency {
V4L2_CID_POWER_LINE_FREQUENCY_DISABLED = 0,
V4L2_CID_POWER_LINE_FREQUENCY_50HZ = 1,
V4L2_CID_POWER_LINE_FREQUENCY_60HZ = 2,
};
#define V4L2_CID_HUE_AUTO (V4L2_CID_BASE+25)
#define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_BASE+26)
#define V4L2_CID_SHARPNESS (V4L2_CID_BASE+27)
#define V4L2_CID_BACKLIGHT_COMPENSATION (V4L2_CID_BASE+28)
#define V4L2_CID_CAMERA_CLASS_BASE (V4L2_CTRL_CLASS_CAMERA | 0x900)
#define V4L2_CID_CAMERA_CLASS (V4L2_CTRL_CLASS_CAMERA | 1)
#define V4L2_CID_EXPOSURE_AUTO (V4L2_CID_CAMERA_CLASS_BASE+1)
enum v4l2_exposure_auto_type {
V4L2_EXPOSURE_MANUAL = 0,
V4L2_EXPOSURE_AUTO = 1,
V4L2_EXPOSURE_SHUTTER_PRIORITY = 2,
V4L2_EXPOSURE_APERTURE_PRIORITY = 3
};
#define V4L2_CID_EXPOSURE_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+2)
#define V4L2_CID_EXPOSURE_AUTO_PRIORITY (V4L2_CID_CAMERA_CLASS_BASE+3)
#define V4L2_CID_PAN_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+4)
#define V4L2_CID_TILT_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+5)
#define V4L2_CID_PAN_RESET (V4L2_CID_CAMERA_CLASS_BASE+6)
#define V4L2_CID_TILT_RESET (V4L2_CID_CAMERA_CLASS_BASE+7)
#define V4L2_CID_PAN_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+8)
#define V4L2_CID_TILT_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+9)
#define V4L2_CID_FOCUS_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+10)
#define V4L2_CID_FOCUS_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+11)
#define V4L2_CID_FOCUS_AUTO (V4L2_CID_CAMERA_CLASS_BASE+12)
#endif
#ifdef __KERNEL__
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
/*
* kzalloc()
*/
static inline void *
kzalloc(size_t size, unsigned int __nocast gfp_flags)
{
void *mem = kmalloc(size, gfp_flags);
if (mem)
memset(mem, 0, size);
return mem;
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
/*
* vm_insert_page()
*/
static inline int
vm_insert_page(struct vm_area_struct *vma, unsigned long addr,
struct page *page)
{
/* Not sure if this is needed. remap_pfn_range() sets VM_RESERVED
* in 2.6.14.
*/
vma->vm_flags |= VM_RESERVED;
SetPageReserved(page);
return remap_pfn_range(vma, addr, page_to_pfn(page), PAGE_SIZE,
vma->vm_page_prot);
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
/*
* v4l_printk_ioctl()
*/
static inline void
v4l_printk_ioctl(unsigned int cmd)
{
switch (_IOC_TYPE(cmd)) {
case 'v':
printk(KERN_DEBUG "ioctl 0x%x (V4L1)\n", cmd);
break;
case 'V':
printk(KERN_DEBUG "ioctl 0x%x (%s)\n",
cmd, v4l2_ioctl_names[_IOC_NR(cmd)]);
break;
default:
printk(KERN_DEBUG "ioctl 0x%x (?)\n", cmd);
break;
}
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
/*
* Mutex API
*/
#include <asm/semaphore.h>
#define mutex_lock(mutex) down(mutex)
#define mutex_lock_interruptible(mutex) down_interruptible(mutex)
#define mutex_unlock(mutex) up(mutex)
#define mutex_init(mutex) init_MUTEX(mutex)
#define mutex semaphore
#else
#include <asm/mutex.h>
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
/*
* usb_endpoint_* functions
*
* Included in Linux 2.6.19
*/
static inline int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
{
return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN);
}
static inline int usb_endpoint_xfer_int(const struct usb_endpoint_descriptor *epd)
{
return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
USB_ENDPOINT_XFER_INT);
}
static inline int usb_endpoint_xfer_isoc(const struct usb_endpoint_descriptor *epd)
{
return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
USB_ENDPOINT_XFER_ISOC);
}
static inline int usb_endpoint_xfer_bulk(const struct usb_endpoint_descriptor *epd)
{
return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
USB_ENDPOINT_XFER_BULK);
}
static inline int usb_endpoint_is_int_in(const struct usb_endpoint_descriptor *epd)
{
return (usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd));
}
/*
* USB auto suspend
*
* Included in Linux 2.6.19
*/
static inline int usb_autopm_get_interface(struct usb_interface *intf)
{ return 0; }
static inline void usb_autopm_put_interface(struct usb_interface *intf)
{ }
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
/*
* Linked list API
*/
#define list_first_entry(ptr, type, member) \
list_entry((ptr)->next, type, member)
#endif
#endif /* __KERNEL__ */
#endif /* _UVC_COMPAT_H */
