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
  94     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
  95         match args[cur_arg].as_str() {
  96             "--"        => { break; },
  97             "-noout"    => { noout = true; },
  98             "-an"       => { decode_audio = false; },
  99             "-vn"       => { decode_video = false; },
 100             "-nm=count"  => { nmode = NumberMode::Counter; },
 101             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 102             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 103             _           => { println!("unknown option {}", args[cur_arg]); return; },
 104         }
 105         cur_arg += 1;
 106     }
 107     let name = args[cur_arg].as_str();
 108     cur_arg += 1;
 109     if cur_arg < args.len() {
 110         lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
 111     }
 112
 113     let path = Path::new(name);
 114     let mut file = File::open(path).unwrap();
 115     let dmx_fact;
 116     let mut fr = FileReader::new_read(&mut file);
 117     let mut br = ByteReader::new(&mut fr);
 118     let res = detect::detect_format(name, &mut br);
 119     if res.is_none() {
 120         println!("cannot detect format for {}", name);
 121         return;
 122     }
 123     let (dmx_name, _) = res.unwrap();
 124 println!("trying demuxer {} on {}", dmx_name, name);
 125
 126     let mut dmx_reg = RegisteredDemuxers::new();
 127     nihav_register_all_demuxers(&mut dmx_reg);
 128     let mut dec_reg = RegisteredDecoders::new();
 129     nihav_register_all_codecs(&mut dec_reg);
 130
 131     dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap();
 132     br.seek(SeekFrom::Start(0)).unwrap();
 133     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 134
 135     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 136     let mut sids: Vec<u32> = Vec::new();
 137     let mut writers: Vec<Outputter> = Vec::new();
 138     for i in 0..dmx.get_num_streams() {
 139         let s = dmx.get_stream(i).unwrap();
 140         let info = s.get_info();
 141         let decfunc = dec_reg.find_decoder(info.get_name());
 142 println!("stream {} - {} {}", i, s, info.get_name());
 143         let str_id = s.get_id();
 144         let mut has_out = false;
 145         sids.push(str_id);
 146         if info.is_video() {
 147             if decode_video {
 148                 if decfunc.is_none() {
 149                     println!("no video decoder found!");
 150                     return;
 151                 }
 152                 let mut dec = (decfunc.unwrap())();
 153                 let mut dsupp = Box::new(NADecoderSupport::new());
 154                 dec.init(&mut dsupp, info).unwrap();
 155                 decs.push(Some((dsupp, dec)));
 156                 if !noout {
 157                     writers.push(Outputter::Video(FrameOutput{prefix: "", streamno: i, frameno: 1, 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                 let mut dsupp = Box::new(NADecoderSupport::new());
 171                 dec.init(&mut dsupp, info).unwrap();
 172                 decs.push(Some((dsupp, dec)));
 173                 if !noout {
 174                     let name = format!("out{:02}.wav", i);
 175                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 176                     has_out = true;
 177                 }
 178             } else {
 179                 decs.push(None);
 180             }
 181         } else {
 182             decs.push(None);
 183 panic!("decoder {} not found", info.get_name());
 184         }
 185         if !has_out {
 186             writers.push(Outputter::None);
 187         }
 188     }
 189
 190     loop {
 191         let pktres = dmx.get_frame();
 192         if let Err(e) = pktres {
 193             if e == DemuxerError::EOF { break; }
 194         }
 195         let pkt = pktres.unwrap();
 196         let streamno = pkt.get_stream().get_id();
 197         let sr = sids.iter().position(|x| *x == streamno);
 198         let idx = sr.unwrap();
 199         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 200             let frm = dec.decode(dsupp, &pkt).unwrap();
 201             if !noout {
 202                 match writers[idx] {
 203                     Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 204                     Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 205                     _ => {},
 206                 };
 207             }
 208         }
 209         if pkt.get_pts() != None && lastpts.is_some() && pkt.get_pts() >= lastpts { break; }
 210     }
 211 //panic!("end");
 212 }