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 use nihav_hlblocks::demux::*;
  15 use nihav_allstuff::*;
  16
  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 seek_error_out = false;
 104     let mut vpfx: Option<String> = None;
 105     let mut apfx: Option<&str> = None;
 106     let mut ignore_errors = false;
 107     let mut dump_frames = false;
 108     let mut force_dmx: Option<&str> = None;
 109     let mut demux_opts: Vec<NAOption> = Vec::new();
 110
 111     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
 112         match args[cur_arg].as_str() {
 113             "--"        => { break; },
 114             "-noout"    => { noout = true; },
 115             "-an"       => { decode_audio = false; },
 116             "-vn"       => { decode_video = false; },
 117             "-nm=count"  => { nmode = NumberMode::Counter; },
 118             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 119             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 120             "-skip=key"   => { smode = FrameSkipMode::KeyframesOnly; },
 121             "-skip=intra" => { smode = FrameSkipMode::IntraOnly; },
 122             "-seek"     => {
 123                 cur_arg += 1;
 124                 if cur_arg == args.len() {
 125                     println!("seek time missing");
 126                     return;
 127                 }
 128                 let ret = args[cur_arg].parse::<NATimePoint>();
 129                 if ret.is_err() {
 130                     println!("wrong seek time");
 131                     return;
 132                 }
 133                 seek_time = ret.unwrap();
 134             },
 135             "-force_seek" => {
 136                 demux_opts.push(NAOption{name: FORCE_SEEK_OPTION, value: NAValue::Bool(true) });
 137             },
 138             "-seek_err" => { seek_error_out = true; },
 139             "-apfx"     => {
 140                 cur_arg += 1;
 141                 if cur_arg == args.len() {
 142                     println!("name missing");
 143                     return;
 144                 }
 145                 apfx = Some(&args[cur_arg]);
 146             },
 147             "-vpfx"     => {
 148                 cur_arg += 1;
 149                 if cur_arg == args.len() {
 150                     println!("name missing");
 151                     return;
 152                 }
 153                 vpfx = Some(args[cur_arg].clone());
 154             },
 155             "-demuxer" | "-f" => {
 156                 cur_arg += 1;
 157                 if cur_arg == args.len() {
 158                     println!("name missing");
 159                     return;
 160                 }
 161                 force_dmx = Some(&args[cur_arg]);
 162             },
 163             "-print_structure" => {
 164                 demux_opts.push(NAOption{name: "print_chunks", value: NAValue::Bool(true) });
 165             },
 166             "-ignerr"   => { ignore_errors = true; },
 167             "-dumpfrm"  => { dump_frames = true; },
 168             _           => { println!("unknown option {}", args[cur_arg]); return; },
 169         }
 170         cur_arg += 1;
 171     }
 172     let name = args[cur_arg].as_str();
 173     cur_arg += 1;
 174     if cur_arg < args.len() {
 175         let ret = args[cur_arg].parse::<NATimePoint>();
 176         if ret.is_err() {
 177             println!("cannot parse end time");
 178             return;
 179         }
 180         lastpts = ret.unwrap();
 181     }
 182
 183     let path = Path::new(name);
 184     let file = File::open(path).unwrap();
 185     let file = BufReader::new(file);
 186     let mut fr = FileReader::new_read(file);
 187     let (is_raw, start, end) = detect_tags(&mut fr, true);
 188
 189     let br: Box<dyn ByteIO>;
 190     if start != 0 || end.is_some() {
 191         println!(" limiting range to {:X}-{:X}", start, end.unwrap_or(0));
 192         let file = fr.finish();
 193         br = Box::new(BoundedFileReader::new_read(file, start, end).unwrap());
 194     } else {
 195         br = Box::new(fr);
 196     }
 197     let mut full_reg = FullRegister::new();
 198     nihav_register_all_demuxers(&mut full_reg.dmx_reg);
 199     nihav_register_all_raw_demuxers(&mut full_reg.rdmx_reg);
 200     nihav_register_all_decoders(&mut full_reg.dec_reg);
 201     nihav_register_all_packetisers(&mut full_reg.pkt_reg);
 202
 203     println!("Opening {name}");
 204     let mut demuxer = DemuxerObject::create(br, &full_reg, name, force_dmx, is_raw, &demux_opts, true);
 205     if demuxer.is_none() {
 206         println!("Demuxer creation failure!");
 207         return;
 208     }
 209     if seek_time != NATimePoint::None {
 210         let ret = demuxer.seek(seek_time);
 211         if ret.is_err() {
 212             println!(" seek error {:?}", ret.err().unwrap());
 213             if seek_error_out {
 214                 return;
 215             }
 216         }
 217     }
 218
 219     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 220     let mut sids: Vec<u32> = Vec::new();
 221     let mut writers: Vec<Outputter> = Vec::new();
 222     let dec_opts = [NAOption{name: FRAME_SKIP_OPTION, value: NAValue::String(smode.to_string())}];
 223     let duration = demuxer.get_duration();
 224     if duration != 0 {
 225         let s = duration / 1000;
 226         let m = s / 60;
 227         let h = m / 60;
 228         println!(" total duration {}:{:02}:{:02}.{}", h, m % 60, s % 60, (duration / 100) % 10);
 229     }
 230     for i in 0..demuxer.get_num_streams() {
 231         let s = demuxer.get_stream(i).unwrap();
 232         let info = s.get_info();
 233         let decfunc = full_reg.dec_reg.find_decoder(info.get_name());
 234         println!("stream {} - {} {}", i, s, info.get_name());
 235         let str_id = s.get_id();
 236         let mut has_out = false;
 237         sids.push(str_id);
 238         if info.is_video() {
 239             if decode_video {
 240                 if decfunc.is_none() {
 241                     println!("no video decoder found!");
 242                     return;
 243                 }
 244                 let mut dec = (decfunc.unwrap())();
 245                 let mut dsupp = Box::new(NADecoderSupport::new());
 246                 dec.init(&mut dsupp, info).unwrap();
 247                 dec.set_options(&dec_opts);
 248                 decs.push(Some((dsupp, dec)));
 249                 if !noout {
 250                     writers.push(Outputter::Video(FrameOutput{prefix: if let Some(ref str) = vpfx { str.clone() } else { "out".to_string() }, streamno: i, frameno: 1, nmode}));
 251                     has_out = true;
 252                 }
 253             } else {
 254                 decs.push(None);
 255             }
 256         } else if info.is_audio() {
 257             if decode_audio {
 258                 if decfunc.is_none() {
 259                     println!("no audio decoder found!");
 260                     return;
 261                 }
 262                 let mut dec = (decfunc.unwrap())();
 263                 let mut dsupp = Box::new(NADecoderSupport::new());
 264                 dec.init(&mut dsupp, info).unwrap();
 265                 decs.push(Some((dsupp, dec)));
 266                 if !noout {
 267                     let name = if let Some(apfx) = apfx {
 268                             format!("{}{:02}.wav", apfx, i)
 269                         } else {
 270                             format!("out{:02}.wav", i)
 271                         };
 272                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 273                     has_out = true;
 274                 }
 275             } else {
 276                 decs.push(None);
 277             }
 278         } else {
 279             decs.push(None);
 280         }
 281         if !has_out {
 282             writers.push(Outputter::None);
 283         }
 284     }
 285
 286     let mut frmnum = 0;
 287     loop {
 288         let pktres = demuxer.get_frame();
 289         if let Err(e) = pktres {
 290             if e == DemuxerError::EOF { break; }
 291         }
 292         let pkt = pktres.unwrap();
 293         let streamno = pkt.get_stream().get_id();
 294         let sr = sids.iter().position(|x| *x == streamno);
 295         let idx = sr.unwrap();
 296         if dump_frames {
 297             let name = format!("out{:02}_{:08}.frm", streamno, pkt.get_pts().unwrap_or(frmnum));
 298             let mut ofile = File::create(name).unwrap();
 299             ofile.write_all(pkt.get_buffer().as_slice()).unwrap();
 300             frmnum += 1;
 301         }
 302         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 303             match dec.decode(dsupp, &pkt) {
 304                 Ok(frm) => {
 305                     if !noout {
 306                         match writers[idx] {
 307                             Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 308                             Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 309                             _ => {},
 310                         };
 311                     }
 312                 },
 313                 Err(DecoderError::MissingReference) if seek_time != NATimePoint::None => {
 314                     println!("ignoring missing ref");
 315                 },
 316                 Err(reason) => {
 317                     println!("error decoding frame for stream {idx}: {:?}", reason);
 318                     if !ignore_errors {
 319                         break;
 320                     }
 321                 },
 322             };
 323             if pkt.get_pts().is_some() && lastpts != NATimePoint::None && !pkt.ts.less_than(lastpts) { break; }
 324         }
 325     }
 326 //panic!("end");
 327 }