DVM_FRAME

Notifies a video capture driver to transfer a single frame from the video device.

• Returns DV_ERR_OK if successful or an error code otherwise.The DV_ERR_SIZEFIELD error indicates the field size is too small.

dwParam1

Address of a VIDEOHDR structure identifying the buffer.

dwParam2

Size, in bytes, of the VIDEOHDR structure.

This message returns immediately after transferring the frame. For a VIDEO_IN channel, this message transfers an image from the hardware frame buffer to the buffer specified in the VIDEOHDR. For a VIDEO_OUT channel, this message transfers an image from the buffer specified in the VIDEOHDR to the hardware frame buffer.