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