int id = BC_CModels::bc_to_x(color_model);
xv_image = XvCreateImage(display, bitmap->xv_portid, id, 0, w, h);
dataSize = xv_image->data_size;
int id = BC_CModels::bc_to_x(color_model);
xv_image = XvCreateImage(display, bitmap->xv_portid, id, 0, w, h);
dataSize = xv_image->data_size;