NET_VCA_BLACKBOARD_WRITE

Structure about blackboard writing detection parameters.

Structure Definition

struct{
  NET_VCA_POLYGON  struRegion;
  BYTE             byTeacherState;
  BYTE             byWritingState;
  BYTE             byWritingArea;
  BYTE             byRes[5];
 }NET_VCA_BLACKBOARD_WRITE,*LPNET_VCA_BLACKBOARD_WRITE;

Members

struRegion

Coordinates of detection area, refer to the structure NET_VCA_POLYGON for details.

byTeacherState

Teacher status (it is valid when uploading alarm): 0-close-up, 1-panorama, 2-no teacher

byWritingState

Blackboard writing status (it is valid when uploading alarm): 0-started, 1-ended

byWritingArea

Blackboard writing region (it is valid when uploading alarm): 0-whole blackboard, 1-left part of blackboard, 2-right part of blackboard.

byRes

Reserved, set to 0.