src/main.rs

   1 extern crate nihav_core;
   2 extern crate nihav_codec_support;
   3 extern crate nihav_registry;
   4 extern crate nihav_allstuff;
   5
   6 use std::io::{Write, BufReader};
   7 use std::fs::File;
   8 use std::path::Path;
   9 use nihav_core::frame::*;
  10 use nihav_core::codecs::*;
  11 use nihav_core::demuxers::*;
  12 use nihav_codec_support::imgwrite::*;
  13 use std::env;
  14
  15 mod demux;
  16 use demux::*;
  17 mod wavwriter;
  18 use crate::wavwriter::WavWriter;
  19
  20 #[derive(Clone,Copy,PartialEq)]
  21 enum NumberMode {
  22     Counter,
  23     PktPTS,
  24     FrmPTS,
  25 }
  26
  27 struct FrameOutput {
  28     prefix:     String,
  29     streamno:   usize,
  30     frameno:    u64,
  31     nmode:      NumberMode,
  32 }
  33
  34 impl FrameOutput {
  35     fn output_frame(&mut self, pkt: &NAPacket, frm: NAFrameRef) {
  36         if frm.get_frame_type() != FrameType::Skip {
  37             let pts = match self.nmode {
  38                     NumberMode::Counter => { self.frameno },
  39                     NumberMode::PktPTS  => { pkt.get_pts().unwrap() },
  40                     NumberMode::FrmPTS  => { if let Some(pt) = frm.get_pts() { pt } else { pkt.get_pts().unwrap() } },
  41                 };
  42             if write_pnm(&self.prefix, self.streamno, pts, frm).is_err() {
  43                 println!("error writing output picture");
  44             }
  45         }
  46         self.frameno += 1;
  47     }
  48 }
  49
  50 struct AudioOutput {
  51     wwr:    WavWriter<'static>,
  52     wrote_header: bool,
  53 }
  54
  55 impl AudioOutput {
  56     fn new(name: &str) -> Self { Self { wwr: WavWriter::new(name), wrote_header: false } }
  57     fn output_frame(&mut self, _pkt: &NAPacket, frm: NAFrameRef) {
  58         if !self.wrote_header {
  59             self.wwr.write_header(frm.get_info().as_ref().get_properties().get_audio_info().unwrap()).unwrap();
  60             self.wrote_header = true;
  61         }
  62         self.wwr.write_frame(frm.get_buffer()).unwrap();
  63     }
  64 }
  65
  66 enum Outputter {
  67     Video(FrameOutput),
  68     Audio(AudioOutput),
  69     None,
  70 }
  71
  72 fn main() {
  73     let args: Vec<_> = env::args().collect();
  74
  75     if args.len() == 1 {
  76         println!("usage: nihav-tool [-noout] [-vn] [-an] input [endtime]");
  77         println!(" or invoke nihav-tool --help for more detailed information");
  78         return;
  79     }
  80     if args.len() == 2 && args[1] == "--help" {
  81         println!("usage: nihav-tool [options] input [endtime]");
  82         println!("available options:");
  83         println!(" -noout     - decode but do not write output");
  84         println!(" -an        - do not decode audio streams");
  85         println!(" -vn        - do not decode video streams");
  86         println!(" -nm={{count,pktpts,frmpts}} - use counter/frame PTS/decoded PTS as output image number");
  87         println!(" -skip={{key,intra}} - decode only reference frames (I-/P-) or intra frames only");
  88         println!(" -seek time - try seeking to the given time before starting decoding");
  89         println!(" -apfx/-vpfx prefix - use given prefix when creating output audio/video files instead of default 'out'");
  90         println!(" -ignerr    - keep decoding even if decoding error is encountered");
  91         println!(" -dumpfrm   - dump raw frame data for all streams");
  92         println!(" endtime    - decoding end time, can be given either as time (hh:mm:ss.ms) or as a timestamp (e.g. 42pts)");
  93         return;
  94     }
  95     let mut lastpts = NATimePoint::None;
  96     let mut cur_arg: usize = 1;
  97     let mut noout = false;
  98     let mut decode_video = true;
  99     let mut decode_audio = true;
 100     let mut nmode = NumberMode::FrmPTS;
 101     let mut smode = FrameSkipMode::None;
 102     let mut seek_time = NATimePoint::None;
 103     let mut vpfx: Option<String> = None;
 104     let mut apfx: Option<&str> = None;
 105     let mut ignore_errors = false;
 106     let mut dump_frames = false;
 107
 108     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
 109         match args[cur_arg].as_str() {
 110             "--"        => { break; },
 111             "-noout"    => { noout = true; },
 112             "-an"       => { decode_audio = false; },
 113             "-vn"       => { decode_video = false; },
 114             "-nm=count"  => { nmode = NumberMode::Counter; },
 115             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 116             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 117             "-skip=key"   => { smode = FrameSkipMode::KeyframesOnly; },
 118             "-skip=intra" => { smode = FrameSkipMode::IntraOnly; },
 119             "-seek"     => {
 120                 cur_arg += 1;
 121                 if cur_arg == args.len() {
 122                     println!("seek time missing");
 123                     return;
 124                 }
 125                 let ret = args[cur_arg].parse::<NATimePoint>();
 126                 if ret.is_err() {
 127                     println!("wrong seek time");
 128                     return;
 129                 }
 130                 seek_time = ret.unwrap();
 131             },
 132             "-apfx"     => {
 133                 cur_arg += 1;
 134                 if cur_arg == args.len() {
 135                     println!("name missing");
 136                     return;
 137                 }
 138                 apfx = Some(&args[cur_arg]);
 139             },
 140             "-vpfx"     => {
 141                 cur_arg += 1;
 142                 if cur_arg == args.len() {
 143                     println!("name missing");
 144                     return;
 145                 }
 146                 vpfx = Some(args[cur_arg].clone());
 147             },
 148             "-ignerr"   => { ignore_errors = true; },
 149             "-dumpfrm"  => { dump_frames = true; },
 150             _           => { println!("unknown option {}", args[cur_arg]); return; },
 151         }
 152         cur_arg += 1;
 153     }
 154     let name = args[cur_arg].as_str();
 155     cur_arg += 1;
 156     if cur_arg < args.len() {
 157         let ret = args[cur_arg].parse::<NATimePoint>();
 158         if ret.is_err() {
 159             println!("cannot parse end time");
 160             return;
 161         }
 162         lastpts = ret.unwrap();
 163     }
 164
 165     let path = Path::new(name);
 166     let file = File::open(path).unwrap();
 167     let file = BufReader::new(file);
 168     let mut fr = FileReader::new_read(file);
 169     let mut br = ByteReader::new(&mut fr);
 170     let (is_raw, start, end) = detect_tags(&mut br);
 171
 172     let mut nfr: Box<dyn ByteIO>;
 173     if start != 0 || end.is_some() {
 174         println!(" limiting range to {:X}-{:X}", start, end.unwrap_or(0));
 175         let file = fr.finish();
 176         nfr = Box::new(BoundedFileReader::new_read(file, start, end).unwrap());
 177     } else {
 178         nfr = Box::new(fr);
 179     }
 180     let mut br = ByteReader::new(nfr.as_mut());
 181     let full_reg = FullRegister::new();
 182     let mut demuxer = DemuxerObject::create(&mut br, &full_reg, name, is_raw);
 183     if demuxer.is_none() {
 184         println!("No demuxer found!");
 185         return;
 186     }
 187     if seek_time != NATimePoint::None {
 188         let ret = demuxer.seek(seek_time);
 189         if ret.is_err() {
 190 println!(" seek error {:?}", ret.err().unwrap());
 191         }
 192     }
 193
 194     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 195     let mut sids: Vec<u32> = Vec::new();
 196     let mut writers: Vec<Outputter> = Vec::new();
 197     let dec_opts = [NAOption{name: FRAME_SKIP_OPTION, value: NAValue::String(smode.to_string())}];
 198     let duration = demuxer.get_duration();
 199     if duration != 0 {
 200         let s = duration / 1000;
 201         let m = s / 60;
 202         let h = m / 60;
 203         println!(" total duration {}:{:02}:{:02}.{}", h, m % 60, s % 60, (duration / 100) % 10);
 204     }
 205     for i in 0..demuxer.get_num_streams() {
 206         let s = demuxer.get_stream(i).unwrap();
 207         let info = s.get_info();
 208         let decfunc = full_reg.dec_reg.find_decoder(info.get_name());
 209 println!("stream {} - {} {}", i, s, info.get_name());
 210         let str_id = s.get_id();
 211         let mut has_out = false;
 212         sids.push(str_id);
 213         if info.is_video() {
 214             if decode_video {
 215                 if decfunc.is_none() {
 216                     println!("no video decoder found!");
 217                     return;
 218                 }
 219                 let mut dec = (decfunc.unwrap())();
 220                 let mut dsupp = Box::new(NADecoderSupport::new());
 221                 dec.init(&mut dsupp, info).unwrap();
 222                 dec.set_options(&dec_opts);
 223                 decs.push(Some((dsupp, dec)));
 224                 if !noout {
 225                     writers.push(Outputter::Video(FrameOutput{prefix: if let Some(ref str) = vpfx { str.clone() } else { "out".to_string() }, streamno: i, frameno: 1, nmode}));
 226                     has_out = true;
 227                 }
 228             } else {
 229                 decs.push(None);
 230             }
 231         } else if info.is_audio() {
 232             if decode_audio {
 233                 if decfunc.is_none() {
 234                     println!("no audio decoder found!");
 235                     return;
 236                 }
 237                 let mut dec = (decfunc.unwrap())();
 238                 let mut dsupp = Box::new(NADecoderSupport::new());
 239                 dec.init(&mut dsupp, info).unwrap();
 240                 decs.push(Some((dsupp, dec)));
 241                 if !noout {
 242                     let name = if let Some(apfx) = apfx {
 243                             format!("{}{:02}.wav", apfx, i)
 244                         } else {
 245                             format!("out{:02}.wav", i)
 246                         };
 247                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 248                     has_out = true;
 249                 }
 250             } else {
 251                 decs.push(None);
 252             }
 253         } else {
 254             decs.push(None);
 255         }
 256         if !has_out {
 257             writers.push(Outputter::None);
 258         }
 259     }
 260
 261     let mut frmnum = 0;
 262     loop {
 263         let pktres = demuxer.get_frame();
 264         if let Err(e) = pktres {
 265             if e == DemuxerError::EOF { break; }
 266         }
 267         let pkt = pktres.unwrap();
 268         let streamno = pkt.get_stream().get_id();
 269         let sr = sids.iter().position(|x| *x == streamno);
 270         let idx = sr.unwrap();
 271         if dump_frames {
 272             let name = format!("out{:02}_{:08}.frm", streamno, pkt.get_pts().unwrap_or(frmnum));
 273             let mut ofile = File::create(name).unwrap();
 274             ofile.write_all(pkt.get_buffer().as_slice()).unwrap();
 275             frmnum += 1;
 276         }
 277         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 278             match dec.decode(dsupp, &pkt) {
 279                 Ok(frm) => {
 280                     if !noout {
 281                         match writers[idx] {
 282                             Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 283                             Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 284                             _ => {},
 285                         };
 286                     }
 287                 },
 288                 Err(DecoderError::MissingReference) if seek_time != NATimePoint::None => {
 289                     println!("ignoring missing ref");
 290                 },
 291                 Err(reason) => {
 292                     println!("error decoding frame {:?}", reason);
 293                     if !ignore_errors {
 294                         break;
 295                     }
 296                 },
 297             };
 298             if pkt.get_pts() != None && lastpts != NATimePoint::None && !pkt.ts.less_than(lastpts) { break; }
 299         }
 300     }
 301 //panic!("end");
 302 }