src/main.rs

   1 extern crate nihav_core;
   2 extern crate nihav_allstuff;
   3
   4 use std::io::SeekFrom;
   5 use std::fs::File;
   6 use std::path::Path;
   7 use nihav_core::io::byteio::{FileReader, ByteReader};
   8 use nihav_core::frame::*;
   9 use nihav_core::codecs::*;
  10 use nihav_core::demuxers::*;
  11 use nihav_core::detect;
  12 use nihav_allstuff::*;
  13 use std::env;
  14
  15 mod frmwriter;
  16 use crate::frmwriter::*;
  17
  18 mod wavwriter;
  19 use crate::wavwriter::WavWriter;
  20
  21 #[derive(Clone,Copy,PartialEq)]
  22 enum NumberMode {
  23     Counter,
  24     PktPTS,
  25     FrmPTS,
  26 }
  27
  28 struct FrameOutput {
  29     prefix:     &'static str,
  30     streamno:   usize,
  31     frameno:    u64,
  32     nmode:      NumberMode,
  33 }
  34
  35 impl FrameOutput {
  36     fn output_frame(&mut self, pkt: &NAPacket, frmref: NAFrameRef) {
  37         let frm = frmref.borrow();
  38         if frm.get_frame_type() != FrameType::Skip {
  39             let pts = match self.nmode {
  40                     NumberMode::Counter => { self.frameno },
  41                     NumberMode::PktPTS  => { pkt.get_pts().unwrap() },
  42                     NumberMode::FrmPTS  => { if let Some(pt) = frm.get_pts() { pt } else { pkt.get_pts().unwrap() } },
  43                 };
  44             let frmbuf = frm.get_buffer().get_vbuf().unwrap();
  45             if frmbuf.get_info().get_format().is_paletted() {
  46                 write_palppm(self.prefix, self.streamno, pts, frm);
  47             } else {
  48                 write_pgmyuv(self.prefix, self.streamno, pts, frm);
  49             }
  50         }
  51         self.frameno += 1;
  52     }
  53 }
  54
  55 struct AudioOutput {
  56     wwr:    WavWriter<'static>,
  57     wrote_header: bool,
  58 }
  59
  60 impl AudioOutput {
  61     fn new(name: &String) -> Self { Self { wwr: WavWriter::new(name), wrote_header: false } }
  62     fn output_frame(&mut self, _pkt: &NAPacket, frm: NAFrameRef) {
  63         if !self.wrote_header {
  64             self.wwr.write_header(frm.borrow().get_info().as_ref().get_properties().get_audio_info().unwrap()).unwrap();
  65             self.wrote_header = true;
  66         }
  67         self.wwr.write_frame(frm.borrow().get_buffer()).unwrap();
  68     }
  69 }
  70
  71 enum Outputter {
  72     Video(FrameOutput),
  73     Audio(AudioOutput),
  74     None,
  75 }
  76
  77 fn main() {
  78     let args: Vec<_> = env::args().collect();
  79
  80     if args.len() == 1 {
  81         println!("usage: nihav-tool [-noout] [-vn] [-an] input [lastpts]");
  82         return;
  83     }
  84     let mut lastpts: Option<u64> = None;
  85     let mut cur_arg: usize = 1;
  86     let mut noout = false;
  87     let mut decode_video = true;
  88     let mut decode_audio = true;
  89     let mut nmode = NumberMode::FrmPTS;
  90
  91     while (cur_arg < args.len()) && (args[cur_arg].chars().next().unwrap() == '-') {
  92         match args[cur_arg].as_str() {
  93             "--"        => { break; },
  94             "-noout"    => { noout = true; },
  95             "-an"       => { decode_audio = false; },
  96             "-vn"       => { decode_video = false; },
  97             "-nm=count"  => { nmode = NumberMode::Counter; },
  98             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
  99             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 100             _           => { println!("unknown option {}", args[cur_arg]); return; },
 101         }
 102         cur_arg += 1;
 103     }
 104     let name = args[cur_arg].as_str();
 105     cur_arg += 1;
 106     if cur_arg < args.len() {
 107         lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
 108     }
 109
 110     let path = Path::new(name);
 111     let mut file = File::open(path).unwrap();
 112     let dmx_fact;
 113     let mut fr = FileReader::new_read(&mut file);
 114     let mut br = ByteReader::new(&mut fr);
 115     let res = detect::detect_format(name, &mut br);
 116     if res.is_none() {
 117         println!("cannot detect format for {}", name);
 118         return;
 119     }
 120     let (dmx_name, _) = res.unwrap();
 121 println!("trying demuxer {} on {}", dmx_name, name);
 122
 123     let mut dmx_reg = RegisteredDemuxers::new();
 124     nihav_register_all_demuxers(&mut dmx_reg);
 125     let mut dec_reg = RegisteredDecoders::new();
 126     nihav_register_all_codecs(&mut dec_reg);
 127
 128     dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap();
 129     br.seek(SeekFrom::Start(0)).unwrap();
 130     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 131
 132     let mut decs: Vec<Option<Box<NADecoder>>> = Vec::new();
 133     let mut sids: Vec<u32> = Vec::new();
 134     let mut writers: Vec<Outputter> = Vec::new();
 135     for i in 0..dmx.get_num_streams() {
 136         let s = dmx.get_stream(i).unwrap();
 137         let info = s.get_info();
 138         let decfunc = dec_reg.find_decoder(info.get_name());
 139 println!("stream {} - {} {}", i, s, info.get_name());
 140         let str_id = s.get_id();
 141         let mut has_out = false;
 142         sids.push(str_id);
 143         if info.is_video() {
 144             if decode_video {
 145                 if decfunc.is_none() {
 146                     println!("no video decoder found!");
 147                     return;
 148                 }
 149                 let mut dec = (decfunc.unwrap())();
 150                 dec.init(info).unwrap();
 151                 decs.push(Some(dec));
 152                 if !noout {
 153                     writers.push(Outputter::Video(FrameOutput{prefix: "", streamno: i, frameno: 1, nmode: nmode}));
 154                     has_out = true;
 155                 }
 156             } else {
 157                 decs.push(None);
 158             }
 159         } else if info.is_audio() {
 160             if decode_audio {
 161                 if decfunc.is_none() {
 162                     println!("no audio decoder found!");
 163                     return;
 164                 }
 165                 let mut dec = (decfunc.unwrap())();
 166                 dec.init(info).unwrap();
 167                 decs.push(Some(dec));
 168                 if !noout {
 169                     let name = format!("out{:02}.wav", i);
 170                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 171                     has_out = true;
 172                 }
 173             } else {
 174                 decs.push(None);
 175             }
 176         } else {
 177             decs.push(None);
 178 panic!("decoder {} not found", info.get_name());
 179         }
 180         if !has_out {
 181             writers.push(Outputter::None);
 182         }
 183     }
 184
 185     loop {
 186         let pktres = dmx.get_frame();
 187         if let Err(e) = pktres {
 188             if e == DemuxerError::EOF { break; }
 189         }
 190         let pkt = pktres.unwrap();
 191         let streamno = pkt.get_stream().get_id();
 192         let sr = sids.iter().position(|x| *x == streamno);
 193         let idx = sr.unwrap();
 194         if let Some(ref mut dec) = decs[idx] {
 195             let frm = dec.decode(&pkt).unwrap();
 196             if !noout {
 197                 match writers[idx] {
 198                     Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 199                     Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 200                     _ => {},
 201                 };
 202             }
 203         }
 204         if pkt.get_pts() != None && lastpts.is_some() && pkt.get_pts() >= lastpts { break; }
 205     }
 206 //panic!("end");
 207 }