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, frmref: NAFrameRef) {
  37         let frm = frmref.borrow();
  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: &String) -> 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.borrow().get_info().as_ref().get_properties().get_audio_info().unwrap()).unwrap();
  69             self.wrote_header = true;
  70         }
  71         self.wwr.write_frame(frm.borrow().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
  95     while (cur_arg < args.len()) && (args[cur_arg].chars().next().unwrap() == '-') {
  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             _           => { println!("unknown option {}", args[cur_arg]); return; },
 105         }
 106         cur_arg += 1;
 107     }
 108     let name = args[cur_arg].as_str();
 109     cur_arg += 1;
 110     if cur_arg < args.len() {
 111         lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
 112     }
 113
 114     let path = Path::new(name);
 115     let mut file = File::open(path).unwrap();
 116     let dmx_fact;
 117     let mut fr = FileReader::new_read(&mut file);
 118     let mut br = ByteReader::new(&mut fr);
 119     let res = detect::detect_format(name, &mut br);
 120     if res.is_none() {
 121         println!("cannot detect format for {}", name);
 122         return;
 123     }
 124     let (dmx_name, _) = res.unwrap();
 125 println!("trying demuxer {} on {}", dmx_name, name);
 126
 127     let mut dmx_reg = RegisteredDemuxers::new();
 128     nihav_register_all_demuxers(&mut dmx_reg);
 129     let mut dec_reg = RegisteredDecoders::new();
 130     nihav_register_all_codecs(&mut dec_reg);
 131
 132     dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap();
 133     br.seek(SeekFrom::Start(0)).unwrap();
 134     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 135
 136     let mut decs: Vec<Option<Box<NADecoder>>> = Vec::new();
 137     let mut sids: Vec<u32> = Vec::new();
 138     let mut writers: Vec<Outputter> = Vec::new();
 139     for i in 0..dmx.get_num_streams() {
 140         let s = dmx.get_stream(i).unwrap();
 141         let info = s.get_info();
 142         let decfunc = dec_reg.find_decoder(info.get_name());
 143 println!("stream {} - {} {}", i, s, info.get_name());
 144         let str_id = s.get_id();
 145         let mut has_out = false;
 146         sids.push(str_id);
 147         if info.is_video() {
 148             if decode_video {
 149                 if decfunc.is_none() {
 150                     println!("no video decoder found!");
 151                     return;
 152                 }
 153                 let mut dec = (decfunc.unwrap())();
 154                 dec.init(info).unwrap();
 155                 decs.push(Some(dec));
 156                 if !noout {
 157                     writers.push(Outputter::Video(FrameOutput{prefix: "", streamno: i, frameno: 1, nmode: nmode}));
 158                     has_out = true;
 159                 }
 160             } else {
 161                 decs.push(None);
 162             }
 163         } else if info.is_audio() {
 164             if decode_audio {
 165                 if decfunc.is_none() {
 166                     println!("no audio decoder found!");
 167                     return;
 168                 }
 169                 let mut dec = (decfunc.unwrap())();
 170                 dec.init(info).unwrap();
 171                 decs.push(Some(dec));
 172                 if !noout {
 173                     let name = format!("out{:02}.wav", i);
 174                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 175                     has_out = true;
 176                 }
 177             } else {
 178                 decs.push(None);
 179             }
 180         } else {
 181             decs.push(None);
 182 panic!("decoder {} not found", info.get_name());
 183         }
 184         if !has_out {
 185             writers.push(Outputter::None);
 186         }
 187     }
 188
 189     loop {
 190         let pktres = dmx.get_frame();
 191         if let Err(e) = pktres {
 192             if e == DemuxerError::EOF { break; }
 193         }
 194         let pkt = pktres.unwrap();
 195         let streamno = pkt.get_stream().get_id();
 196         let sr = sids.iter().position(|x| *x == streamno);
 197         let idx = sr.unwrap();
 198         if let Some(ref mut dec) = decs[idx] {
 199             let frm = dec.decode(&pkt).unwrap();
 200             if !noout {
 201                 match writers[idx] {
 202                     Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 203                     Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 204                     _ => {},
 205                 };
 206             }
 207         }
 208         if pkt.get_pts() != None && lastpts.is_some() && pkt.get_pts() >= lastpts { break; }
 209     }
 210 //panic!("end");
 211 }