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36 Chapter 4: Hardware reference
Hook Type
M_GRAB_FIELD_END
1
M_FRAME_START
M_FIELD_START_ODD
M_FIELD_START_EVEN
1
M_FIELD_START
M_GRAB_FRAME_END
M_GRAB_FRAME_START
1. These events occur even when a video source is connected but the board is not grabbing.
• The video data is sent to the 128 Mbytes of on-board acquisition memory. After
storing the video, an interrupt is generated notifying the Host of the acquired
data. The Host is then responsible to request a data transfer to the optional
MPEG-4 encoder, Host memory, off-board display memory, or other PCIe devices
across the PCIe bus. Upon receiving the request, acquisition memory sends the
data to the appropriate device.
Description
Hook to the end of grabbed fields.
Hook to the start of the incoming signal's frames.
1
Hook to the start of the incoming signal's odd fields.
1
Hook to the start of the incoming signal's even fields.
Hook to the start of the incoming signal's field.
Hook to the end of grabbed frames.
Hook to the start of grabbed frames.
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