src/frmwriter.rs

   1 extern crate nihav_core;
   2
   3 use nihav_core::frame::*;
   4 use std::io::prelude::*;
   5 use std::fs::File;
   6 use std::cell::Ref;
   7
   8 pub fn write_pgmyuv(pfx: &str, strno: usize, num: u64, frm: Ref<NAFrame>) {
   9     if let NABufferType::None = frm.get_buffer() { return; }
  10     let name = format!("{}out{:02}_{:08}.pgm", pfx, strno, num);
  11     let mut ofile = File::create(name).unwrap();
  12     let buf = frm.get_buffer().get_vbuf().unwrap();
  13     let (w, h) = buf.get_dimensions(0);
  14     let (w2, h2) = buf.get_dimensions(1);
  15     let has_alpha = buf.get_info().get_format().has_alpha();
  16     let tot_h;
  17     if has_alpha {
  18         tot_h = h * 2 + h2;
  19     } else {
  20         tot_h = h + h2;
  21     }
  22     let hdr = format!("P5\n{} {}\n255\n", w, tot_h);
  23     ofile.write_all(hdr.as_bytes()).unwrap();
  24     let dta = buf.get_data();
  25     let ls = buf.get_stride(0);
  26     let mut idx = 0;
  27     let mut idx2 = w;
  28     let mut pad: Vec<u8> = Vec::with_capacity((w - w2 * 2) / 2);
  29     pad.resize((w - w2 * 2) / 2, 0xFF);
  30     for _ in 0..h {
  31         let line = &dta[idx..idx2];
  32         ofile.write_all(line).unwrap();
  33         idx  += ls;
  34         idx2 += ls;
  35     }
  36     let mut base1 = buf.get_offset(1);
  37     let stride1 = buf.get_stride(1);
  38     let mut base2 = buf.get_offset(2);
  39     let stride2 = buf.get_stride(2);
  40     for _ in 0..h2 {
  41         let bend1 = base1 + w2;
  42         let line = &dta[base1..bend1];
  43         ofile.write_all(line).unwrap();
  44         ofile.write_all(pad.as_slice()).unwrap();
  45
  46         let bend2 = base2 + w2;
  47         let line = &dta[base2..bend2];
  48         ofile.write_all(line).unwrap();
  49         ofile.write_all(pad.as_slice()).unwrap();
  50
  51         base1 += stride1;
  52         base2 += stride2;
  53     }
  54     if has_alpha {
  55         let ls = buf.get_stride(3);
  56         let mut idx = buf.get_offset(3);
  57         let mut idx2 = idx + w;
  58         for _ in 0..h {
  59             let line = &dta[idx..idx2];
  60             ofile.write_all(line).unwrap();
  61             idx  += ls;
  62             idx2 += ls;
  63         }
  64     }
  65 }
  66
  67 pub fn write_palppm(pfx: &str, strno: usize, num: u64, frm: Ref<NAFrame>) {
  68     let name = format!("{}out{:02}_{:08}.ppm", pfx, strno, num);
  69     let mut ofile = File::create(name).unwrap();
  70     let buf = frm.get_buffer().get_vbuf().unwrap();
  71     let (w, h) = buf.get_dimensions(0);
  72     let paloff = buf.get_offset(1);
  73     let hdr = format!("P6\n{} {}\n255\n", w, h);
  74     ofile.write_all(hdr.as_bytes()).unwrap();
  75     let dta = buf.get_data();
  76     let ls = buf.get_stride(0);
  77     let offs: [usize; 3] = [
  78             buf.get_info().get_format().get_chromaton(0).unwrap().get_offset() as usize,
  79             buf.get_info().get_format().get_chromaton(1).unwrap().get_offset() as usize,
  80             buf.get_info().get_format().get_chromaton(2).unwrap().get_offset() as usize
  81         ];
  82     let mut idx  = 0;
  83     let mut line: Vec<u8> = Vec::with_capacity(w * 3);
  84     line.resize(w * 3, 0);
  85     for _ in 0..h {
  86         let src = &dta[idx..(idx+w)];
  87         for x in 0..w {
  88             let pix = src[x] as usize;
  89             line[x * 3 + 0] = dta[paloff + pix * 3 + offs[0]];
  90             line[x * 3 + 1] = dta[paloff + pix * 3 + offs[1]];
  91             line[x * 3 + 2] = dta[paloff + pix * 3 + offs[2]];
  92         }
  93         ofile.write_all(line.as_slice()).unwrap();
  94         idx  += ls;
  95     }
  96 }
  97
  98 pub fn write_ppm(pfx: &str, strno: usize, num: u64, frm: Ref<NAFrame>) {
  99     let name = format!("{}out{:02}_{:08}.ppm", pfx, strno, num);
 100     let mut ofile = File::create(name).unwrap();
 101     if let NABufferType::VideoPacked(ref buf) = frm.get_buffer() {
 102         let (w, h) = buf.get_dimensions(0);
 103         let hdr = format!("P6\n{} {}\n255\n", w, h);
 104         ofile.write_all(hdr.as_bytes()).unwrap();
 105         let dta = buf.get_data();
 106         let stride = buf.get_stride(0);
 107         let offs: [usize; 3] = [
 108                 buf.get_info().get_format().get_chromaton(0).unwrap().get_offset() as usize,
 109                 buf.get_info().get_format().get_chromaton(1).unwrap().get_offset() as usize,
 110                 buf.get_info().get_format().get_chromaton(2).unwrap().get_offset() as usize
 111             ];
 112         let step = buf.get_info().get_format().get_elem_size() as usize;
 113         let mut line: Vec<u8> = Vec::with_capacity(w * 3);
 114         line.resize(w * 3, 0);
 115         for src in dta.chunks(stride) {
 116             for x in 0..w {
 117                 line[x * 3 + 0] = src[x * step + offs[0]];
 118                 line[x * 3 + 1] = src[x * step + offs[1]];
 119                 line[x * 3 + 2] = src[x * step + offs[2]];
 120             }
 121             ofile.write_all(line.as_slice()).unwrap();
 122         }
 123     } else if let NABufferType::Video16(ref buf) = frm.get_buffer() {
 124         let (w, h) = buf.get_dimensions(0);
 125         let hdr = format!("P6\n{} {}\n255\n", w, h);
 126         ofile.write_all(hdr.as_bytes()).unwrap();
 127         let dta = buf.get_data();
 128         let stride = buf.get_stride(0);
 129         let depths: [u8; 3] = [
 130                 buf.get_info().get_format().get_chromaton(0).unwrap().get_depth(),
 131                 buf.get_info().get_format().get_chromaton(1).unwrap().get_depth(),
 132                 buf.get_info().get_format().get_chromaton(2).unwrap().get_depth()
 133             ];
 134         let masks: [u16; 3] = [
 135                 (1 << depths[0]) - 1,
 136                 (1 << depths[1]) - 1,
 137                 (1 << depths[2]) - 1
 138             ];
 139         let shifts: [u8; 3] = [
 140                 buf.get_info().get_format().get_chromaton(0).unwrap().get_shift(),
 141                 buf.get_info().get_format().get_chromaton(1).unwrap().get_shift(),
 142                 buf.get_info().get_format().get_chromaton(2).unwrap().get_shift()
 143             ];
 144         let mut line: Vec<u8> = Vec::with_capacity(w * 3);
 145         line.resize(w * 3, 0);
 146         for src in dta.chunks(stride) {
 147             for x in 0..w {
 148                 let elem = src[x];
 149                 let r = ((elem >> shifts[0]) & masks[0]) << (8 - depths[0]);
 150                 let g = ((elem >> shifts[1]) & masks[1]) << (8 - depths[1]);
 151                 let b = ((elem >> shifts[2]) & masks[2]) << (8 - depths[2]);
 152                 line[x * 3 + 0] = r as u8;
 153                 line[x * 3 + 1] = g as u8;
 154                 line[x * 3 + 2] = b as u8;
 155             }
 156             ofile.write_all(line.as_slice()).unwrap();
 157         }
 158     } else {
 159 panic!(" unhandled buf format");
 160     }
 161 }