src/main.rs

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