// video.h

PVIDEO_READ_CLOCK_LINE PvideoReadClockLine;

BOOLEAN PvideoReadClockLine(
  PVOID HwDeviceExtension
)
{...}
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Windows Driver Kit DDI reference (nc-video-pvideo_read_clock_line)

PVIDEO_READ_CLOCK_LINE callback function

Description

ReadClockLine reads a single data bit from the I2C serial clock line.

Parameters

`HwDeviceExtension`

Pointer to the miniport driver's per-adapter storage area. For more information, see Device Extensions.

Return value

ReadClockLine returns 1 if the serial clock line is high and 0 if the serial clock line is low.

Remarks

ReadClockLine should be made pageable.

PVIDEO_READ_CLOCK_LINE - NtDoc