+fn write_ppm(pfx: &str, strno: usize, num: u64, frm: NAFrameRef) {
+ let name = format!("assets/{}out{:02}_{:06}.ppm", pfx, strno, num);
+ let mut ofile = File::create(name).unwrap();
+ let info = frm.get_buffer().get_video_info().unwrap();
+ let mut dpic = alloc_video_buffer(NAVideoInfo::new(info.get_width(), info.get_height(), false, RGB24_FORMAT), 0).unwrap();
+ let ifmt = ScaleInfo { width: info.get_width(), height: info.get_height(), fmt: info.get_format() };
+ let ofmt = ScaleInfo { width: info.get_width(), height: info.get_height(), fmt: RGB24_FORMAT };
+ let mut scaler = NAScale::new(ifmt, ofmt).unwrap();
+ scaler.convert(&frm.get_buffer(), &mut dpic).unwrap();
+ let buf = dpic.get_vbuf().unwrap();
+ let (w, h) = buf.get_dimensions(0);
+ let hdr = format!("P6\n{} {}\n255\n", w, h);
+ ofile.write_all(hdr.as_bytes()).unwrap();
+ let dta = buf.get_data();
+ let stride = buf.get_stride(0);
+ let mut line: Vec<u8> = Vec::with_capacity(w * 3);
+ line.resize(w * 3, 0);
+ for src in dta.chunks(stride) {
+ ofile.write_all(&src[0..w*3]).unwrap();
+ }
+}
+