Data Translation DT3130 Series, Руководство пользователя

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Chapter 4
82
Set the Standard Controls for the Input Channel
Set the input sync source with
OlFgSetInputControlValue.
Set the top of the frame with
OlFgSetInputControlValue.
Use the key OLC_FG_CTL_FRAME_TOP to set
the first line of video, relative to the active video
area, to digitize for the selected input channel. The
default is 0.
Set the left of the frame with
OlFgSetInputControlValue.
Use the key OLC_FG_CTL_FRAME_LEFT to set
the first pixel of video, relative to the active video
area, to digitize for the selected input channel. The
default is 0.
Use the key OLC_FG_CTL_FRAME_HEIGHT to set
the number of lines per field of video to digitize for
the selected input channel.The default is 576 for
50 Hz and 480 for 60 Hz.
Set the height of the frame with
OlFgSetInputControlValue.
Use the key OLC_FG_CTL_VIDEO_TYPE to select a
composite sync source and
OLC_FG_CTL_CSYNC_SOURCE to specify that the
current channel provides the sync signal.
Use the key OLC_FG_CTL_FRAME_WIDTH to set
the number of pixels per line of video to digitize for the
selected input channel. The default is 786 for 50 Hz
and 640 for 60 Hz.
Set the clock source with
OlFgSetInputControlValue.
Use the key OLC_FG_CTL_CLOCK_SOURCE to
set the pixel clock to internal.
Set the width of the frame with
OlFgSetInputControlValue.
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