- } else if let NABufferType::Video16(ref buf) = frm.get_buffer() {
- 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 depths: [u8; 3] = [
- buf.get_info().get_format().get_chromaton(0).unwrap().get_depth(),
- buf.get_info().get_format().get_chromaton(1).unwrap().get_depth(),
- buf.get_info().get_format().get_chromaton(2).unwrap().get_depth()
- ];
- let masks: [u16; 3] = [
- (1 << depths[0]) - 1,
- (1 << depths[1]) - 1,
- (1 << depths[2]) - 1
- ];
- let shifts: [u8; 3] = [
- buf.get_info().get_format().get_chromaton(0).unwrap().get_shift(),
- buf.get_info().get_format().get_chromaton(1).unwrap().get_shift(),
- buf.get_info().get_format().get_chromaton(2).unwrap().get_shift()
- ];
- let mut line: Vec<u8> = Vec::with_capacity(w * 3);
- line.resize(w * 3, 0);
- for src in dta.chunks(stride) {
- for x in 0..w {
- let elem = src[x];
- let r = ((elem >> shifts[0]) & masks[0]) << (8 - depths[0]);
- let g = ((elem >> shifts[1]) & masks[1]) << (8 - depths[1]);
- let b = ((elem >> shifts[2]) & masks[2]) << (8 - depths[2]);
- line[x * 3 + 0] = r as u8;
- line[x * 3 + 1] = g as u8;
- line[x * 3 + 2] = b as u8;
- }
- ofile.write_all(line.as_slice()).unwrap();
- }
- } else {
-panic!(" unhandled buf format");
- }