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,
  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     let mut force_dmx: Option<&str> = None;
 108     let mut demux_opts: Vec<NAOption> = Vec::new();
 109
 110     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
 111         match args[cur_arg].as_str() {
 112             "--"        => { break; },
 113             "-noout"    => { noout = true; },
 114             "-an"       => { decode_audio = false; },
 115             "-vn"       => { decode_video = false; },
 116             "-nm=count"  => { nmode = NumberMode::Counter; },
 117             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 118             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 119             "-skip=key"   => { smode = FrameSkipMode::KeyframesOnly; },
 120             "-skip=intra" => { smode = FrameSkipMode::IntraOnly; },
 121             "-seek"     => {
 122                 cur_arg += 1;
 123                 if cur_arg == args.len() {
 124                     println!("seek time missing");
 125                     return;
 126                 }
 127                 let ret = args[cur_arg].parse::<NATimePoint>();
 128                 if ret.is_err() {
 129                     println!("wrong seek time");
 130                     return;
 131                 }
 132                 seek_time = ret.unwrap();
 133             },
 134             "-apfx"     => {
 135                 cur_arg += 1;
 136                 if cur_arg == args.len() {
 137                     println!("name missing");
 138                     return;
 139                 }
 140                 apfx = Some(&args[cur_arg]);
 141             },
 142             "-vpfx"     => {
 143                 cur_arg += 1;
 144                 if cur_arg == args.len() {
 145                     println!("name missing");
 146                     return;
 147                 }
 148                 vpfx = Some(args[cur_arg].clone());
 149             },
 150             "-demuxer"     => {
 151                 cur_arg += 1;
 152                 if cur_arg == args.len() {
 153                     println!("name missing");
 154                     return;
 155                 }
 156                 force_dmx = Some(&args[cur_arg]);
 157             },
 158             "-print_mov_chunks" => {
 159                 demux_opts.push(NAOption{name: "print_chunks", value: NAValue::Bool(true) });
 160             },
 161             "-ignerr"   => { ignore_errors = true; },
 162             "-dumpfrm"  => { dump_frames = true; },
 163             _           => { println!("unknown option {}", args[cur_arg]); return; },
 164         }
 165         cur_arg += 1;
 166     }
 167     let name = args[cur_arg].as_str();
 168     cur_arg += 1;
 169     if cur_arg < args.len() {
 170         let ret = args[cur_arg].parse::<NATimePoint>();
 171         if ret.is_err() {
 172             println!("cannot parse end time");
 173             return;
 174         }
 175         lastpts = ret.unwrap();
 176     }
 177
 178     let path = Path::new(name);
 179     let file = File::open(path).unwrap();
 180     let file = BufReader::new(file);
 181     let mut fr = FileReader::new_read(file);
 182     let (is_raw, start, end) = detect_tags(&mut fr);
 183
 184     let mut br: Box<dyn ByteIO>;
 185     if start != 0 || end.is_some() {
 186         println!(" limiting range to {:X}-{:X}", start, end.unwrap_or(0));
 187         let file = fr.finish();
 188         br = Box::new(BoundedFileReader::new_read(file, start, end).unwrap());
 189     } else {
 190         br = Box::new(fr);
 191     }
 192     let full_reg = FullRegister::new();
 193     let mut demuxer = DemuxerObject::create(br.as_mut(), &full_reg, name, force_dmx, is_raw, &demux_opts);
 194     if demuxer.is_none() {
 195         println!("No demuxer found!");
 196         return;
 197     }
 198     if seek_time != NATimePoint::None {
 199         let ret = demuxer.seek(seek_time);
 200         if ret.is_err() {
 201             println!(" seek error {:?}", ret.err().unwrap());
 202         }
 203     }
 204
 205     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 206     let mut sids: Vec<u32> = Vec::new();
 207     let mut writers: Vec<Outputter> = Vec::new();
 208     let dec_opts = [NAOption{name: FRAME_SKIP_OPTION, value: NAValue::String(smode.to_string())}];
 209     let duration = demuxer.get_duration();
 210     if duration != 0 {
 211         let s = duration / 1000;
 212         let m = s / 60;
 213         let h = m / 60;
 214         println!(" total duration {}:{:02}:{:02}.{}", h, m % 60, s % 60, (duration / 100) % 10);
 215     }
 216     for i in 0..demuxer.get_num_streams() {
 217         let s = demuxer.get_stream(i).unwrap();
 218         let info = s.get_info();
 219         let decfunc = full_reg.dec_reg.find_decoder(info.get_name());
 220         println!("stream {} - {} {}", i, s, info.get_name());
 221         let str_id = s.get_id();
 222         let mut has_out = false;
 223         sids.push(str_id);
 224         if info.is_video() {
 225             if decode_video {
 226                 if decfunc.is_none() {
 227                     println!("no video decoder found!");
 228                     return;
 229                 }
 230                 let mut dec = (decfunc.unwrap())();
 231                 let mut dsupp = Box::new(NADecoderSupport::new());
 232                 dec.init(&mut dsupp, info).unwrap();
 233                 dec.set_options(&dec_opts);
 234                 decs.push(Some((dsupp, dec)));
 235                 if !noout {
 236                     writers.push(Outputter::Video(FrameOutput{prefix: if let Some(ref str) = vpfx { str.clone() } else { "out".to_string() }, streamno: i, frameno: 1, nmode}));
 237                     has_out = true;
 238                 }
 239             } else {
 240                 decs.push(None);
 241             }
 242         } else if info.is_audio() {
 243             if decode_audio {
 244                 if decfunc.is_none() {
 245                     println!("no audio decoder found!");
 246                     return;
 247                 }
 248                 let mut dec = (decfunc.unwrap())();
 249                 let mut dsupp = Box::new(NADecoderSupport::new());
 250                 dec.init(&mut dsupp, info).unwrap();
 251                 decs.push(Some((dsupp, dec)));
 252                 if !noout {
 253                     let name = if let Some(apfx) = apfx {
 254                             format!("{}{:02}.wav", apfx, i)
 255                         } else {
 256                             format!("out{:02}.wav", i)
 257                         };
 258                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 259                     has_out = true;
 260                 }
 261             } else {
 262                 decs.push(None);
 263             }
 264         } else {
 265             decs.push(None);
 266         }
 267         if !has_out {
 268             writers.push(Outputter::None);
 269         }
 270     }
 271
 272     let mut frmnum = 0;
 273     loop {
 274         let pktres = demuxer.get_frame();
 275         if let Err(e) = pktres {
 276             if e == DemuxerError::EOF { break; }
 277         }
 278         let pkt = pktres.unwrap();
 279         let streamno = pkt.get_stream().get_id();
 280         let sr = sids.iter().position(|x| *x == streamno);
 281         let idx = sr.unwrap();
 282         if dump_frames {
 283             let name = format!("out{:02}_{:08}.frm", streamno, pkt.get_pts().unwrap_or(frmnum));
 284             let mut ofile = File::create(name).unwrap();
 285             ofile.write_all(pkt.get_buffer().as_slice()).unwrap();
 286             frmnum += 1;
 287         }
 288         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 289             match dec.decode(dsupp, &pkt) {
 290                 Ok(frm) => {
 291                     if !noout {
 292                         match writers[idx] {
 293                             Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 294                             Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 295                             _ => {},
 296                         };
 297                     }
 298                 },
 299                 Err(DecoderError::MissingReference) if seek_time != NATimePoint::None => {
 300                     println!("ignoring missing ref");
 301                 },
 302                 Err(reason) => {
 303                     println!("error decoding frame {:?}", reason);
 304                     if !ignore_errors {
 305                         break;
 306                     }
 307                 },
 308             };
 309             if pkt.get_pts().is_some() && lastpts != NATimePoint::None && !pkt.ts.less_than(lastpts) { break; }
 310         }
 311     }
 312 //panic!("end");
 313 }