src/main.rs

   1 extern crate nihav_core;
   2 extern crate nihav_codec_support;
   3 extern crate nihav_registry;
   4 extern crate nihav_allstuff;
   5
   6 use std::io::{SeekFrom, Write};
   7 use std::fs::File;
   8 use std::path::Path;
   9 use nihav_core::io::byteio::{FileReader, ByteReader};
  10 use nihav_core::frame::*;
  11 use nihav_core::codecs::*;
  12 use nihav_core::demuxers::*;
  13 use nihav_codec_support::imgwrite::*;
  14 use nihav_registry::detect;
  15 use nihav_allstuff::*;
  16 use std::env;
  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:     String,
  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             if let Err(_) = write_pnm(&self.prefix, self.streamno, pts, frm) {
  44                 println!("error writing output picture");
  45             }
  46         }
  47         self.frameno += 1;
  48     }
  49 }
  50
  51 struct AudioOutput {
  52     wwr:    WavWriter<'static>,
  53     wrote_header: bool,
  54 }
  55
  56 impl AudioOutput {
  57     fn new(name: &str) -> Self { Self { wwr: WavWriter::new(name), wrote_header: false } }
  58     fn output_frame(&mut self, _pkt: &NAPacket, frm: NAFrameRef) {
  59         if !self.wrote_header {
  60             self.wwr.write_header(frm.get_info().as_ref().get_properties().get_audio_info().unwrap()).unwrap();
  61             self.wrote_header = true;
  62         }
  63         self.wwr.write_frame(frm.get_buffer()).unwrap();
  64     }
  65 }
  66
  67 enum Outputter {
  68     Video(FrameOutput),
  69     Audio(AudioOutput),
  70     None,
  71 }
  72
  73 fn main() {
  74     let args: Vec<_> = env::args().collect();
  75
  76     if args.len() == 1 {
  77         println!("usage: nihav-tool [-noout] [-vn] [-an] input [lastpts]");
  78         return;
  79     }
  80     let mut lastpts: Option<u64> = None;
  81     let mut cur_arg: usize = 1;
  82     let mut noout = false;
  83     let mut decode_video = true;
  84     let mut decode_audio = true;
  85     let mut nmode = NumberMode::FrmPTS;
  86     let mut seek_time = 0u64;
  87     let mut vpfx: Option<String> = None;
  88     let mut apfx: Option<&str> = None;
  89     let mut ignore_errors = false;
  90     let mut dump_frames = false;
  91
  92     while (cur_arg < args.len()) && args[cur_arg].starts_with('-') {
  93         match args[cur_arg].as_str() {
  94             "--"        => { break; },
  95             "-noout"    => { noout = true; },
  96             "-an"       => { decode_audio = false; },
  97             "-vn"       => { decode_video = false; },
  98             "-nm=count"  => { nmode = NumberMode::Counter; },
  99             "-nm=pktpts" => { nmode = NumberMode::PktPTS; },
 100             "-nm=frmpts" => { nmode = NumberMode::FrmPTS; },
 101             "-seek"     => {
 102                 cur_arg += 1;
 103                 if cur_arg == args.len() {
 104                     println!("seek time missing");
 105                     return;
 106                 }
 107                 let ret = args[cur_arg].parse::<u64>();
 108                 if ret.is_err() {
 109                     println!("wrong seek time");
 110                     return;
 111                 }
 112                 seek_time = ret.unwrap();
 113             },
 114             "-apfx"     => {
 115                 cur_arg += 1;
 116                 if cur_arg == args.len() {
 117                     println!("name missing");
 118                     return;
 119                 }
 120                 apfx = Some(&args[cur_arg]);
 121             },
 122             "-vpfx"     => {
 123                 cur_arg += 1;
 124                 if cur_arg == args.len() {
 125                     println!("name missing");
 126                     return;
 127                 }
 128                 vpfx = Some(args[cur_arg].clone());
 129             },
 130             "-ignerr"   => { ignore_errors = true; },
 131             "-dumpfrm"  => { dump_frames = true; },
 132             _           => { println!("unknown option {}", args[cur_arg]); return; },
 133         }
 134         cur_arg += 1;
 135     }
 136     let name = args[cur_arg].as_str();
 137     cur_arg += 1;
 138     if cur_arg < args.len() {
 139         lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
 140     }
 141
 142     let path = Path::new(name);
 143     let mut file = File::open(path).unwrap();
 144     let dmx_fact;
 145     let mut fr = FileReader::new_read(&mut file);
 146     let mut br = ByteReader::new(&mut fr);
 147     let res = detect::detect_format(name, &mut br);
 148     if res.is_none() {
 149         println!("cannot detect format for {}", name);
 150         return;
 151     }
 152     let (dmx_name, _) = res.unwrap();
 153 println!("trying demuxer {} on {}", dmx_name, name);
 154
 155     let mut dmx_reg = RegisteredDemuxers::new();
 156     nihav_register_all_demuxers(&mut dmx_reg);
 157     let mut dec_reg = RegisteredDecoders::new();
 158     nihav_register_all_codecs(&mut dec_reg);
 159
 160     dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap();
 161     br.seek(SeekFrom::Start(0)).unwrap();
 162     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 163
 164     if seek_time > 0 {
 165         let ret = dmx.seek(seek_time);
 166         if ret.is_err() {
 167 println!(" seek error {:?}", ret.err().unwrap());
 168         }
 169     }
 170
 171     let mut decs: Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>> = Vec::new();
 172     let mut sids: Vec<u32> = Vec::new();
 173     let mut writers: Vec<Outputter> = Vec::new();
 174     for i in 0..dmx.get_num_streams() {
 175         let s = dmx.get_stream(i).unwrap();
 176         let info = s.get_info();
 177         let decfunc = dec_reg.find_decoder(info.get_name());
 178 println!("stream {} - {} {}", i, s, info.get_name());
 179         let str_id = s.get_id();
 180         let mut has_out = false;
 181         sids.push(str_id);
 182         if info.is_video() {
 183             if decode_video {
 184                 if decfunc.is_none() {
 185                     println!("no video decoder found!");
 186                     return;
 187                 }
 188                 let mut dec = (decfunc.unwrap())();
 189                 let mut dsupp = Box::new(NADecoderSupport::new());
 190                 dec.init(&mut dsupp, info).unwrap();
 191                 decs.push(Some((dsupp, dec)));
 192                 if !noout {
 193                     writers.push(Outputter::Video(FrameOutput{prefix: if let Some(ref str) = vpfx { str.clone() } else { "out".to_string() }, streamno: i, frameno: 1, nmode}));
 194                     has_out = true;
 195                 }
 196             } else {
 197                 decs.push(None);
 198             }
 199         } else if info.is_audio() {
 200             if decode_audio {
 201                 if decfunc.is_none() {
 202                     println!("no audio decoder found!");
 203                     return;
 204                 }
 205                 let mut dec = (decfunc.unwrap())();
 206                 let mut dsupp = Box::new(NADecoderSupport::new());
 207                 dec.init(&mut dsupp, info).unwrap();
 208                 decs.push(Some((dsupp, dec)));
 209                 if !noout {
 210                     let name = if let Some(apfx) = apfx {
 211                             format!("{}{:02}.wav", apfx, i)
 212                         } else {
 213                             format!("out{:02}.wav", i)
 214                         };
 215                     writers.push(Outputter::Audio(AudioOutput::new(&name)));
 216                     has_out = true;
 217                 }
 218             } else {
 219                 decs.push(None);
 220             }
 221         } else {
 222             decs.push(None);
 223 panic!("decoder {} not found", info.get_name());
 224         }
 225         if !has_out {
 226             writers.push(Outputter::None);
 227         }
 228     }
 229
 230     let mut frmnum = 0;
 231     loop {
 232         let pktres = dmx.get_frame();
 233         if let Err(e) = pktres {
 234             if e == DemuxerError::EOF { break; }
 235         }
 236         let pkt = pktres.unwrap();
 237         let streamno = pkt.get_stream().get_id();
 238         let sr = sids.iter().position(|x| *x == streamno);
 239         let idx = sr.unwrap();
 240         if dump_frames {
 241             let name = format!("out{:02}_{:08}.frm", streamno, pkt.get_pts().unwrap_or(frmnum));
 242             let mut ofile = File::create(name).unwrap();
 243             ofile.write(pkt.get_buffer().as_slice()).unwrap();
 244             frmnum += 1;
 245         }
 246         if let Some((ref mut dsupp, ref mut dec)) = decs[idx] {
 247             match dec.decode(dsupp, &pkt) {
 248                 Ok(frm) => {
 249                     if !noout {
 250                         match writers[idx] {
 251                             Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
 252                             Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
 253                             _ => {},
 254                         };
 255                     }
 256                 },
 257                 Err(DecoderError::MissingReference) if seek_time > 0 => {
 258                     println!("ignoring missing ref");
 259                 },
 260                 Err(reason) => {
 261                     println!("error decoding frame {:?}", reason);
 262                     if !ignore_errors {
 263                         break;
 264                     }
 265                 },
 266             };
 267             if pkt.get_pts() != None && lastpts.is_some() && pkt.get_pts() >= lastpts { break; }
 268         }
 269     }
 270 //panic!("end");
 271 }