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:     &'static str,
  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
  96     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
  97         match args[cur_arg].as_str() {
  98             "--"        => { break; },
  99             "-noout"    => { noout = true; },
 100             "-an"       => { decode_audio = false; },
 101             "-vn"       => { decode_video = false; },
 102             "-nm=count"  => { nmode = NumberMode::Counter; },
 103             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 104             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 105             "-seek"     => {
 106                 cur_arg += 1;
 107                 if cur_arg == args.len() {
 108                     println!("seek time missing");
 109                     return;
 110                 }
 111                 let ret = args[cur_arg].parse::<u64>();
 112                 if ret.is_err() {
 113                     println!("wrong seek time");
 114                     return;
 115                 }
 116                 seek_time = ret.unwrap();
 117             },
 118             _           => { println!("unknown option {}", args[cur_arg]); return; },
 119         }
 120         cur_arg += 1;
 121     }
 122     let name = args[cur_arg].as_str();
 123     cur_arg += 1;
 124     if cur_arg < args.len() {
 125         lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
 126     }
 127
 128     let path = Path::new(name);
 129     let mut file = File::open(path).unwrap();
 130     let dmx_fact;
 131     let mut fr = FileReader::new_read(&mut file);
 132     let mut br = ByteReader::new(&mut fr);
 133     let res = detect::detect_format(name, &mut br);
 134     if res.is_none() {
 135         println!("cannot detect format for {}", name);
 136         return;
 137     }
 138     let (dmx_name, _) = res.unwrap();
 139 println!("trying demuxer {} on {}", dmx_name, name);
 140
 141     let mut dmx_reg = RegisteredDemuxers::new();
 142     nihav_register_all_demuxers(&mut dmx_reg);
 143     let mut dec_reg = RegisteredDecoders::new();
 144     nihav_register_all_codecs(&mut dec_reg);
 145
 146     dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap();
 147     br.seek(SeekFrom::Start(0)).unwrap();
 148     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 149
 150     if seek_time > 0 {
 151         let ret = dmx.seek(seek_time);
 152         if ret.is_err() {
 153 println!(" seek error {:?}", ret.err().unwrap());
 154         }
 155     }
 156
 157     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 158     let mut sids: Vec<u32> = Vec::new();
 159     let mut writers: Vec<Outputter> = Vec::new();
 160     for i in 0..dmx.get_num_streams() {
 161         let s = dmx.get_stream(i).unwrap();
 162         let info = s.get_info();
 163         let decfunc = dec_reg.find_decoder(info.get_name());
 164 println!("stream {} - {} {}", i, s, info.get_name());
 165         let str_id = s.get_id();
 166         let mut has_out = false;
 167         sids.push(str_id);
 168         if info.is_video() {
 169             if decode_video {
 170                 if decfunc.is_none() {
 171                     println!("no video decoder found!");
 172                     return;
 173                 }
 174                 let mut dec = (decfunc.unwrap())();
 175                 let mut dsupp = Box::new(NADecoderSupport::new());
 176                 dec.init(&mut dsupp, info).unwrap();
 177                 decs.push(Some((dsupp, dec)));
 178                 if !noout {
 179                     writers.push(Outputter::Video(FrameOutput{prefix: "", streamno: i, frameno: 1, nmode}));
 180                     has_out = true;
 181                 }
 182             } else {
 183                 decs.push(None);
 184             }
 185         } else if info.is_audio() {
 186             if decode_audio {
 187                 if decfunc.is_none() {
 188                     println!("no audio decoder found!");
 189                     return;
 190                 }
 191                 let mut dec = (decfunc.unwrap())();
 192                 let mut dsupp = Box::new(NADecoderSupport::new());
 193                 dec.init(&mut dsupp, info).unwrap();
 194                 decs.push(Some((dsupp, dec)));
 195                 if !noout {
 196                     let name = format!("out{:02}.wav", i);
 197                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 198                     has_out = true;
 199                 }
 200             } else {
 201                 decs.push(None);
 202             }
 203         } else {
 204             decs.push(None);
 205 panic!("decoder {} not found", info.get_name());
 206         }
 207         if !has_out {
 208             writers.push(Outputter::None);
 209         }
 210     }
 211
 212     loop {
 213         let pktres = dmx.get_frame();
 214         if let Err(e) = pktres {
 215             if e == DemuxerError::EOF { break; }
 216         }
 217         let pkt = pktres.unwrap();
 218         let streamno = pkt.get_stream().get_id();
 219         let sr = sids.iter().position(|x| *x == streamno);
 220         let idx = sr.unwrap();
 221         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 222             match dec.decode(dsupp, &pkt) {
 223                 Ok(frm) => {
 224                     if !noout {
 225                         match writers[idx] {
 226                             Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 227                             Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 228                             _ => {},
 229                         };
 230                     }
 231                 },
 232                 Err(DecoderError::MissingReference) if seek_time > 0 => {
 233                     println!("ignoring missing ref");
 234                 },
 235                 Err(reason) => {
 236                     println!("error decoding frame {:?}", reason);
 237                     break;
 238                 },
 239             };
 240             if pkt.get_pts() != None && lastpts.is_some() && pkt.get_pts() >= lastpts { break; }
 241         }
 242     }
 243 //panic!("end");
 244 }