src/main.rs

   1 extern crate nihav_core;
   2 extern crate nihav_registry;
   3 extern crate nihav_allstuff;
   4
   5 use std::io::SeekFrom;
   6 use std::fs::File;
   7 use std::path::Path;
   8 use nihav_core::io::byteio::{FileReader, ByteReader};
   9 use nihav_core::frame::*;
  10 use nihav_core::codecs::*;
  11 use nihav_core::demuxers::*;
  12 use nihav_registry::detect;
  13 use nihav_allstuff::*;
  14 use std::env;
  15
  16 mod frmwriter;
  17 use crate::frmwriter::*;
  18
  19 mod wavwriter;
  20 use crate::wavwriter::WavWriter;
  21
  22 #[derive(Clone,Copy,PartialEq)]
  23 enum NumberMode {
  24     Counter,
  25     PktPTS,
  26     FrmPTS,
  27 }
  28
  29 struct FrameOutput {
  30     prefix:     String,
  31     streamno:   usize,
  32     frameno:    u64,
  33     nmode:      NumberMode,
  34 }
  35
  36 impl FrameOutput {
  37     fn output_frame(&mut self, pkt: &NAPacket, frm: NAFrameRef) {
  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 vinfo = frm.get_buffer().get_video_info().unwrap();
  45             if vinfo.get_format().is_paletted() {
  46                 write_palppm(&self.prefix, self.streamno, pts, frm);
  47             } else if vinfo.get_format().get_model().is_yuv() {
  48                 write_pgmyuv(&self.prefix, self.streamno, pts, frm);
  49             } else if vinfo.get_format().get_model().is_rgb() {
  50                 write_ppm(&self.prefix, self.streamno, pts, frm);
  51             } else {
  52 panic!(" unknown format");
  53             }
  54         }
  55         self.frameno += 1;
  56     }
  57 }
  58
  59 struct AudioOutput {
  60     wwr:    WavWriter<'static>,
  61     wrote_header: bool,
  62 }
  63
  64 impl AudioOutput {
  65     fn new(name: &str) -> Self { Self { wwr: WavWriter::new(name), wrote_header: false } }
  66     fn output_frame(&mut self, _pkt: &NAPacket, frm: NAFrameRef) {
  67         if !self.wrote_header {
  68             self.wwr.write_header(frm.get_info().as_ref().get_properties().get_audio_info().unwrap()).unwrap();
  69             self.wrote_header = true;
  70         }
  71         self.wwr.write_frame(frm.get_buffer()).unwrap();
  72     }
  73 }
  74
  75 enum Outputter {
  76     Video(FrameOutput),
  77     Audio(AudioOutput),
  78     None,
  79 }
  80
  81 fn main() {
  82     let args: Vec<_> = env::args().collect();
  83
  84     if args.len() == 1 {
  85         println!("usage: nihav-tool [-noout] [-vn] [-an] input [lastpts]");
  86         return;
  87     }
  88     let mut lastpts: Option<u64> = None;
  89     let mut cur_arg: usize = 1;
  90     let mut noout = false;
  91     let mut decode_video = true;
  92     let mut decode_audio = true;
  93     let mut nmode = NumberMode::FrmPTS;
  94     let mut seek_time = 0u64;
  95     let mut vpfx: Option<String> = None;
  96     let mut apfx: Option<&str> = None;
  97     let mut ignore_errors = false;
  98
  99     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
 100         match args[cur_arg].as_str() {
 101             "--"        => { break; },
 102             "-noout"    => { noout = true; },
 103             "-an"       => { decode_audio = false; },
 104             "-vn"       => { decode_video = false; },
 105             "-nm=count"  => { nmode = NumberMode::Counter; },
 106             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 107             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 108             "-seek"     => {
 109                 cur_arg += 1;
 110                 if cur_arg == args.len() {
 111                     println!("seek time missing");
 112                     return;
 113                 }
 114                 let ret = args[cur_arg].parse::<u64>();
 115                 if ret.is_err() {
 116                     println!("wrong seek time");
 117                     return;
 118                 }
 119                 seek_time = ret.unwrap();
 120             },
 121             "-apfx"     => {
 122                 cur_arg += 1;
 123                 if cur_arg == args.len() {
 124                     println!("name missing");
 125                     return;
 126                 }
 127                 apfx = Some(&args[cur_arg]);
 128             },
 129             "-vpfx"     => {
 130                 cur_arg += 1;
 131                 if cur_arg == args.len() {
 132                     println!("name missing");
 133                     return;
 134                 }
 135                 vpfx = Some(args[cur_arg].clone());
 136             },
 137             "-ignerr"   => { ignore_errors = true; },
 138             _           => { println!("unknown option {}", args[cur_arg]); return; },
 139         }
 140         cur_arg += 1;
 141     }
 142     let name = args[cur_arg].as_str();
 143     cur_arg += 1;
 144     if cur_arg < args.len() {
 145         lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
 146     }
 147
 148     let path = Path::new(name);
 149     let mut file = File::open(path).unwrap();
 150     let dmx_fact;
 151     let mut fr = FileReader::new_read(&mut file);
 152     let mut br = ByteReader::new(&mut fr);
 153     let res = detect::detect_format(name, &mut br);
 154     if res.is_none() {
 155         println!("cannot detect format for {}", name);
 156         return;
 157     }
 158     let (dmx_name, _) = res.unwrap();
 159 println!("trying demuxer {} on {}", dmx_name, name);
 160
 161     let mut dmx_reg = RegisteredDemuxers::new();
 162     nihav_register_all_demuxers(&mut dmx_reg);
 163     let mut dec_reg = RegisteredDecoders::new();
 164     nihav_register_all_codecs(&mut dec_reg);
 165
 166     dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap();
 167     br.seek(SeekFrom::Start(0)).unwrap();
 168     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 169
 170     if seek_time > 0 {
 171         let ret = dmx.seek(seek_time);
 172         if ret.is_err() {
 173 println!(" seek error {:?}", ret.err().unwrap());
 174         }
 175     }
 176
 177     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 178     let mut sids: Vec<u32> = Vec::new();
 179     let mut writers: Vec<Outputter> = Vec::new();
 180     for i in 0..dmx.get_num_streams() {
 181         let s = dmx.get_stream(i).unwrap();
 182         let info = s.get_info();
 183         let decfunc = dec_reg.find_decoder(info.get_name());
 184 println!("stream {} - {} {}", i, s, info.get_name());
 185         let str_id = s.get_id();
 186         let mut has_out = false;
 187         sids.push(str_id);
 188         if info.is_video() {
 189             if decode_video {
 190                 if decfunc.is_none() {
 191                     println!("no video decoder found!");
 192                     return;
 193                 }
 194                 let mut dec = (decfunc.unwrap())();
 195                 let mut dsupp = Box::new(NADecoderSupport::new());
 196                 dec.init(&mut dsupp, info).unwrap();
 197                 decs.push(Some((dsupp, dec)));
 198                 if !noout {
 199                     writers.push(Outputter::Video(FrameOutput{prefix: if let Some(ref str) = vpfx { str.clone() } else { "out".to_string() }, streamno: i, frameno: 1, nmode}));
 200                     has_out = true;
 201                 }
 202             } else {
 203                 decs.push(None);
 204             }
 205         } else if info.is_audio() {
 206             if decode_audio {
 207                 if decfunc.is_none() {
 208                     println!("no audio decoder found!");
 209                     return;
 210                 }
 211                 let mut dec = (decfunc.unwrap())();
 212                 let mut dsupp = Box::new(NADecoderSupport::new());
 213                 dec.init(&mut dsupp, info).unwrap();
 214                 decs.push(Some((dsupp, dec)));
 215                 if !noout {
 216                     let name = if let Some(apfx) = apfx {
 217                             format!("{}{:02}.wav", apfx, i)
 218                         } else {
 219                             format!("out{:02}.wav", i)
 220                         };
 221                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 222                     has_out = true;
 223                 }
 224             } else {
 225                 decs.push(None);
 226             }
 227         } else {
 228             decs.push(None);
 229 panic!("decoder {} not found", info.get_name());
 230         }
 231         if !has_out {
 232             writers.push(Outputter::None);
 233         }
 234     }
 235
 236     loop {
 237         let pktres = dmx.get_frame();
 238         if let Err(e) = pktres {
 239             if e == DemuxerError::EOF { break; }
 240         }
 241         let pkt = pktres.unwrap();
 242         let streamno = pkt.get_stream().get_id();
 243         let sr = sids.iter().position(|x| *x == streamno);
 244         let idx = sr.unwrap();
 245         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 246             match dec.decode(dsupp, &pkt) {
 247                 Ok(frm) => {
 248                     if !noout {
 249                         match writers[idx] {
 250                             Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 251                             Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 252                             _ => {},
 253                         };
 254                     }
 255                 },
 256                 Err(DecoderError::MissingReference) if seek_time > 0 => {
 257                     println!("ignoring missing ref");
 258                 },
 259                 Err(reason) => {
 260                     println!("error decoding frame {:?}", reason);
 261                     if !ignore_errors {
 262                         break;
 263                     }
 264                 },
 265             };
 266             if pkt.get_pts() != None && lastpts.is_some() && pkt.get_pts() >= lastpts { break; }
 267         }
 268     }
 269 //panic!("end");
 270 }