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 [lastpts]");
  78         return;
  79     }
  80     let mut lastpts: Option<u64> = None;
  81     let mut cur_arg: usize = 1;
  82     let mut noout = false;
  83     let mut decode_video = true;
  84     let mut decode_audio = true;
  85     let mut nmode = NumberMode::FrmPTS;
  86     let mut smode = FrameSkipMode::None;
  87     let mut seek_time = 0u64;
  88     let mut vpfx: Option<String> = None;
  89     let mut apfx: Option<&str> = None;
  90     let mut ignore_errors = false;
  91     let mut dump_frames = false;
  92
  93     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
  94         match args[cur_arg].as_str() {
  95             "--"        => { break; },
  96             "-noout"    => { noout = true; },
  97             "-an"       => { decode_audio = false; },
  98             "-vn"       => { decode_video = false; },
  99             "-nm=count"  => { nmode = NumberMode::Counter; },
 100             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 101             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 102             "-skip=key"   => { smode = FrameSkipMode::KeyframesOnly; },
 103             "-skip=intra" => { smode = FrameSkipMode::IntraOnly; },
 104             "-seek"     => {
 105                 cur_arg += 1;
 106                 if cur_arg == args.len() {
 107                     println!("seek time missing");
 108                     return;
 109                 }
 110                 let ret = args[cur_arg].parse::<u64>();
 111                 if ret.is_err() {
 112                     println!("wrong seek time");
 113                     return;
 114                 }
 115                 seek_time = ret.unwrap();
 116             },
 117             "-apfx"     => {
 118                 cur_arg += 1;
 119                 if cur_arg == args.len() {
 120                     println!("name missing");
 121                     return;
 122                 }
 123                 apfx = Some(&args[cur_arg]);
 124             },
 125             "-vpfx"     => {
 126                 cur_arg += 1;
 127                 if cur_arg == args.len() {
 128                     println!("name missing");
 129                     return;
 130                 }
 131                 vpfx = Some(args[cur_arg].clone());
 132             },
 133             "-ignerr"   => { ignore_errors = true; },
 134             "-dumpfrm"  => { dump_frames = true; },
 135             _           => { println!("unknown option {}", args[cur_arg]); return; },
 136         }
 137         cur_arg += 1;
 138     }
 139     let name = args[cur_arg].as_str();
 140     cur_arg += 1;
 141     if cur_arg < args.len() {
 142         lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
 143     }
 144
 145     let path = Path::new(name);
 146     let mut file = File::open(path).unwrap();
 147     let dmx_fact;
 148     let mut fr = FileReader::new_read(&mut file);
 149     let mut br = ByteReader::new(&mut fr);
 150     let res = detect::detect_format(name, &mut br);
 151     if res.is_none() {
 152         println!("cannot detect format for {}", name);
 153         return;
 154     }
 155     let (dmx_name, _) = res.unwrap();
 156 println!("trying demuxer {} on {}", dmx_name, name);
 157
 158     let mut dmx_reg = RegisteredDemuxers::new();
 159     nihav_register_all_demuxers(&mut dmx_reg);
 160     let mut dec_reg = RegisteredDecoders::new();
 161     nihav_register_all_codecs(&mut dec_reg);
 162
 163     dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap();
 164     br.seek(SeekFrom::Start(0)).unwrap();
 165     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 166
 167     if seek_time > 0 {
 168         let ret = dmx.seek(seek_time);
 169         if ret.is_err() {
 170 println!(" seek error {:?}", ret.err().unwrap());
 171         }
 172     }
 173
 174     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 175     let mut sids: Vec<u32> = Vec::new();
 176     let mut writers: Vec<Outputter> = Vec::new();
 177     let dec_opts = [NAOption{name: FRAME_SKIP_OPTION, value: NAValue::String(smode.to_string())}];
 178     for i in 0..dmx.get_num_streams() {
 179         let s = dmx.get_stream(i).unwrap();
 180         let info = s.get_info();
 181         let decfunc = dec_reg.find_decoder(info.get_name());
 182 println!("stream {} - {} {}", i, s, info.get_name());
 183         let str_id = s.get_id();
 184         let mut has_out = false;
 185         sids.push(str_id);
 186         if info.is_video() {
 187             if decode_video {
 188                 if decfunc.is_none() {
 189                     println!("no video decoder found!");
 190                     return;
 191                 }
 192                 let mut dec = (decfunc.unwrap())();
 193                 let mut dsupp = Box::new(NADecoderSupport::new());
 194                 dec.init(&mut dsupp, info).unwrap();
 195                 dec.set_options(&dec_opts);
 196                 decs.push(Some((dsupp, dec)));
 197                 if !noout {
 198                     writers.push(Outputter::Video(FrameOutput{prefix: if let Some(ref str) = vpfx { str.clone() } else { "out".to_string() }, streamno: i, frameno: 1, nmode}));
 199                     has_out = true;
 200                 }
 201             } else {
 202                 decs.push(None);
 203             }
 204         } else if info.is_audio() {
 205             if decode_audio {
 206                 if decfunc.is_none() {
 207                     println!("no audio decoder found!");
 208                     return;
 209                 }
 210                 let mut dec = (decfunc.unwrap())();
 211                 let mut dsupp = Box::new(NADecoderSupport::new());
 212                 dec.init(&mut dsupp, info).unwrap();
 213                 decs.push(Some((dsupp, dec)));
 214                 if !noout {
 215                     let name = if let Some(apfx) = apfx {
 216                             format!("{}{:02}.wav", apfx, i)
 217                         } else {
 218                             format!("out{:02}.wav", i)
 219                         };
 220                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 221                     has_out = true;
 222                 }
 223             } else {
 224                 decs.push(None);
 225             }
 226         } else {
 227             decs.push(None);
 228 panic!("decoder {} not found", info.get_name());
 229         }
 230         if !has_out {
 231             writers.push(Outputter::None);
 232         }
 233     }
 234
 235     let mut frmnum = 0;
 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 dump_frames {
 246             let name = format!("out{:02}_{:08}.frm", streamno, pkt.get_pts().unwrap_or(frmnum));
 247             let mut ofile = File::create(name).unwrap();
 248             ofile.write(pkt.get_buffer().as_slice()).unwrap();
 249             frmnum += 1;
 250         }
 251         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 252             match dec.decode(dsupp, &pkt) {
 253                 Ok(frm) => {
 254                     if !noout {
 255                         match writers[idx] {
 256                             Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 257                             Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 258                             _ => {},
 259                         };
 260                     }
 261                 },
 262                 Err(DecoderError::MissingReference) if seek_time > 0 => {
 263                     println!("ignoring missing ref");
 264                 },
 265                 Err(reason) => {
 266                     println!("error decoding frame {:?}", reason);
 267                     if !ignore_errors {
 268                         break;
 269                     }
 270                 },
 271             };
 272             if pkt.get_pts() != None && lastpts.is_some() && pkt.get_pts() >= lastpts { break; }
 273         }
 274     }
 275 //panic!("end");
 276 }