Sensoray 2253 Linux - Manual (Page 22)

int osdOn, //OSD on if != 0
int osdChan, //OSD channel (filled in by driver)
int osdBmp, //OSD on bitmap if !=0
int transparent, //text background transparent if !=0
int positionTop, //OSD string on top of the screen if !=0
int ddmm, //date format is dd-mm if != 0
int year2 , //date is truncated to 2 digits if !=0
int fraction, //digits showing fraction of a second: 0, 1, 2
char line[80], //caption text
int xoff, yoff //x and y offsets from top/bottom left corner
};
S2253_VIDIOC_CLOCK
int ioctl(int fd, int request, struct s2253_clock *clk);
clk
Pointer to
struct s2253_clock {
__u64
sec, //Seconds
__u32 usec //Microseconds
}
This structure is similar to the struct timeval used with the
gettimeofday() function. If this struct is initialized using
gettimeofday(), it should also be adjusted to local time. The clock on
the device does not make adjustments for timezones or daylight-saving.
S2253_VIDIOC_OVERLAY
int ioctl(int fd, int request, struct s2253_overlay_image *ovl);
struct s2253_overlay_image {
unsigned char id; // unique id representing this overlay
unsigned char transparent; // 0=transparent .. 7=opaque
// 8=use PNG or BMP transparency info
unsigned char update; // bit 0: update the display,
// bit 1: update the x&y offset,
// bit 2: update the transparency
// (see defines below)
unsigned char reserved;
__u32 xOffset; // x offset from left side
__u32 yOffset; // y offset from top
__u32 length; // length of image data (or 0 to use existing
// data, and update transparent,
// xOffset and yOffset only)
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