+ int base_color, int line_color, int x, int y, int w, int h);
+ static void draw_wave(VFrame *frame, double *dp, int len,
+ int base_color, int line_color, int x=0, int y=0) {
+ draw_wave(frame, dp, len, base_color, line_color,
+ x,y,frame->get_w(),frame->get_h());
+ }