// video.h

PVIDEO_HW_START_DMA PvideoHwStartDma;

HW_DMA_RETURN PvideoHwStartDma(
  PVOID HwDeviceExtension,
  PDMA pDma
)
{...}
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Windows Driver Kit DDI reference (nc-video-pvideo_hw_start_dma)

Description

A video miniport driver's HwStartDma function starts a DMA transfer. Reserved for system use.

Parameters

`HwDeviceExtension`

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

`pDma`

Opaque type for DMA handle.

Return value

HwStartDma returns a HW_DMA_RETURN enumeration value.

PVIDEO_HW_START_DMA - NtDoc