src/main.rs

   1 extern crate nihav_core;
   2 extern crate nihav_registry;
   3 extern crate nihav_allstuff;
   4
   5 use std::io::{SeekFrom, Write};
   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     let mut dump_frames = false;
  99
 100     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
 101         match args[cur_arg].as_str() {
 102             "--"        => { break; },
 103             "-noout"    => { noout = true; },
 104             "-an"       => { decode_audio = false; },
 105             "-vn"       => { decode_video = false; },
 106             "-nm=count"  => { nmode = NumberMode::Counter; },
 107             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 108             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 109             "-seek"     => {
 110                 cur_arg += 1;
 111                 if cur_arg == args.len() {
 112                     println!("seek time missing");
 113                     return;
 114                 }
 115                 let ret = args[cur_arg].parse::<u64>();
 116                 if ret.is_err() {
 117                     println!("wrong seek time");
 118                     return;
 119                 }
 120                 seek_time = ret.unwrap();
 121             },
 122             "-apfx"     => {
 123                 cur_arg += 1;
 124                 if cur_arg == args.len() {
 125                     println!("name missing");
 126                     return;
 127                 }
 128                 apfx = Some(&args[cur_arg]);
 129             },
 130             "-vpfx"     => {
 131                 cur_arg += 1;
 132                 if cur_arg == args.len() {
 133                     println!("name missing");
 134                     return;
 135                 }
 136                 vpfx = Some(args[cur_arg].clone());
 137             },
 138             "-ignerr"   => { ignore_errors = true; },
 139             "-dumpfrm"  => { dump_frames = true; },
 140             _           => { println!("unknown option {}", args[cur_arg]); return; },
 141         }
 142         cur_arg += 1;
 143     }
 144     let name = args[cur_arg].as_str();
 145     cur_arg += 1;
 146     if cur_arg < args.len() {
 147         lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
 148     }
 149
 150     let path = Path::new(name);
 151     let mut file = File::open(path).unwrap();
 152     let dmx_fact;
 153     let mut fr = FileReader::new_read(&mut file);
 154     let mut br = ByteReader::new(&mut fr);
 155     let res = detect::detect_format(name, &mut br);
 156     if res.is_none() {
 157         println!("cannot detect format for {}", name);
 158         return;
 159     }
 160     let (dmx_name, _) = res.unwrap();
 161 println!("trying demuxer {} on {}", dmx_name, name);
 162
 163     let mut dmx_reg = RegisteredDemuxers::new();
 164     nihav_register_all_demuxers(&mut dmx_reg);
 165     let mut dec_reg = RegisteredDecoders::new();
 166     nihav_register_all_codecs(&mut dec_reg);
 167
 168     dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap();
 169     br.seek(SeekFrom::Start(0)).unwrap();
 170     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 171
 172     if seek_time > 0 {
 173         let ret = dmx.seek(seek_time);
 174         if ret.is_err() {
 175 println!(" seek error {:?}", ret.err().unwrap());
 176         }
 177     }
 178
 179     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 180     let mut sids: Vec<u32> = Vec::new();
 181     let mut writers: Vec<Outputter> = Vec::new();
 182     for i in 0..dmx.get_num_streams() {
 183         let s = dmx.get_stream(i).unwrap();
 184         let info = s.get_info();
 185         let decfunc = dec_reg.find_decoder(info.get_name());
 186 println!("stream {} - {} {}", i, s, info.get_name());
 187         let str_id = s.get_id();
 188         let mut has_out = false;
 189         sids.push(str_id);
 190         if info.is_video() {
 191             if decode_video {
 192                 if decfunc.is_none() {
 193                     println!("no video decoder found!");
 194                     return;
 195                 }
 196                 let mut dec = (decfunc.unwrap())();
 197                 let mut dsupp = Box::new(NADecoderSupport::new());
 198                 dec.init(&mut dsupp, info).unwrap();
 199                 decs.push(Some((dsupp, dec)));
 200                 if !noout {
 201                     writers.push(Outputter::Video(FrameOutput{prefix: if let Some(ref str) = vpfx { str.clone() } else { "out".to_string() }, streamno: i, frameno: 1, nmode}));
 202                     has_out = true;
 203                 }
 204             } else {
 205                 decs.push(None);
 206             }
 207         } else if info.is_audio() {
 208             if decode_audio {
 209                 if decfunc.is_none() {
 210                     println!("no audio 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                 decs.push(Some((dsupp, dec)));
 217                 if !noout {
 218                     let name = if let Some(apfx) = apfx {
 219                             format!("{}{:02}.wav", apfx, i)
 220                         } else {
 221                             format!("out{:02}.wav", i)
 222                         };
 223                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 224                     has_out = true;
 225                 }
 226             } else {
 227                 decs.push(None);
 228             }
 229         } else {
 230             decs.push(None);
 231 panic!("decoder {} not found", info.get_name());
 232         }
 233         if !has_out {
 234             writers.push(Outputter::None);
 235         }
 236     }
 237
 238     let mut frmnum = 0;
 239     loop {
 240         let pktres = dmx.get_frame();
 241         if let Err(e) = pktres {
 242             if e == DemuxerError::EOF { break; }
 243         }
 244         let pkt = pktres.unwrap();
 245         let streamno = pkt.get_stream().get_id();
 246         let sr = sids.iter().position(|x| *x == streamno);
 247         let idx = sr.unwrap();
 248         if dump_frames {
 249             let name = format!("out{:02}_{:08}.frm", streamno, pkt.get_pts().unwrap_or(frmnum));
 250             let mut ofile = File::create(name).unwrap();
 251             ofile.write(pkt.get_buffer().as_slice()).unwrap();
 252             frmnum += 1;
 253         }
 254         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 255             match dec.decode(dsupp, &pkt) {
 256                 Ok(frm) => {
 257                     if !noout {
 258                         match writers[idx] {
 259                             Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 260                             Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 261                             _ => {},
 262                         };
 263                     }
 264                 },
 265                 Err(DecoderError::MissingReference) if seek_time > 0 => {
 266                     println!("ignoring missing ref");
 267                 },
 268                 Err(reason) => {
 269                     println!("error decoding frame {:?}", reason);
 270                     if !ignore_errors {
 271                         break;
 272                     }
 273                 },
 274             };
 275             if pkt.get_pts() != None && lastpts.is_some() && pkt.get_pts() >= lastpts { break; }
 276         }
 277     }
 278 //panic!("end");
 279 }