User's Manual

7.5.5 DVS300_Start
Syn t a x
int DVS300_Start(int nDevNum, int SwitchingChans, HWND Main, HWND
hwndPreview)
Pa ram et e r s
nDevNum: Specifies the device num ber(0~ 3).
SwitchingChans: Single video input or switching between video muxes.
0: single channel.
1: two channels ( m ux0, mux1).
2: three channels (m ux0, mux1, mux2).
3: four channels (m ux0, mux1, m ux2, mux3).
Main: A m ain window handle.
hwndPreview: A windows handle for display area. When the value of
this param eter is NULL, the video will not be
rendered. (This param eter is only valid, when the
“SwitchChans” is zero.)
Ret urn Value
SUCCEEDED: Function succeeded.
FAI LED: Function failed.
DEVICENUMERROR: I nvalid device num ber.
SDKINITFAI LED: SDK not initialized.
De script ion
This function starts video capturing on a specified capture port.
The capture state would be set as “ RUNNI NG” after a successful start. If the
channels share frames (i.e. SwitchingChans> 0) , the video input m ux will be
set zero.
Se e Also
DVS300_Stop
DVS300_GetCapState