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::fs::File;
   7 use nihav_core::io::byteio::{FileReader, ByteReader};
   8 use nihav_core::frame::*;
   9 use nihav_core::options::*;
  10 use nihav_core::codecs::*;
  11 use nihav_core::demuxers::*;
  12 use nihav_core::muxers::*;
  13 use nihav_core::scale::*;
  14 use nihav_core::soundcvt::*;
  15 use nihav_registry::detect;
  16 use nihav_allstuff::*;
  17 use std::env;
  18
  19 fn print_options(name: &str, options: &[NAOptionDefinition]) {
  20     if options.is_empty() {
  21         println!("No custom options.");
  22     } else {
  23         println!("Options for '{}'", name);
  24         for opt in options.iter() {
  25             println!(" {}", opt);
  26         }
  27     }
  28 }
  29
  30 struct OptionArgs {
  31     name:   String,
  32     value:  Option<String>,
  33 }
  34
  35 struct InputStreamOptions {
  36     id:             u32,
  37     drop:           bool,
  38     dec_opts:       Vec<OptionArgs>,
  39 }
  40
  41 struct OutputStreamOptions {
  42     id:             u32,
  43     enc_params:     EncodeParameters,
  44     enc_name:       String,
  45     enc_opts:       Vec<OptionArgs>,
  46 }
  47
  48 enum OutputConvert {
  49     Video(NAScale, NABufferType),
  50     Audio(NAAudioInfo, NAChannelMap),
  51     None,
  52 }
  53
  54 enum OutputMode {
  55     Drop,
  56     Copy(u32),
  57     Encode(u32, Box<dyn NAEncoder>, OutputConvert),
  58 }
  59
  60 #[derive(Default)]
  61 struct Transcoder {
  62     input_name:     String,
  63     input_fmt:      Option<String>,
  64     output_name:    String,
  65     output_fmt:     Option<String>,
  66     demux_opts:     Vec<OptionArgs>,
  67     mux_opts:       Vec<OptionArgs>,
  68     istr_opts:      Vec<InputStreamOptions>,
  69     ostr_opts:      Vec<OutputStreamOptions>,
  70     decoders:       Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>>,
  71     encoders:       Vec<OutputMode>,
  72     no_video:       bool,
  73     no_audio:       bool,
  74 }
  75
  76 macro_rules! parse_and_apply_options {
  77     ($obj: expr, $in_opts: expr, $name: expr) => {
  78         let mut opts = Vec::with_capacity($in_opts.len());
  79         let opt_def = $obj.get_supported_options();
  80         for opt in $in_opts.iter() {
  81             let mut found = false;
  82             for opt_def in opt_def.iter() {
  83                 if opt.name == opt_def.name {
  84                     let arg = if let Some(ref str) = opt.value { Some(str) } else { None };
  85                     let ret = opt_def.parse(&opt.name, arg);
  86                     if ret.is_err() {
  87                         println!("invalid option {} for {}", opt.name, $name);
  88                     } else {
  89                         let (val, _) = ret.unwrap();
  90                         opts.push(val);
  91                     }
  92                     found = true;
  93                 }
  94             }
  95             if !found {
  96                 println!("  ignoring option '{}' for {}", opt.name, $name);
  97             }
  98         }
  99         $obj.set_options(opts.as_slice());
 100     }
 101 }
 102
 103 impl Transcoder {
 104     fn new() -> Self { Self::default() }
 105     fn parse_istream_options(&mut self, opt0: &str, opt1: &str) -> bool {
 106         let (_, strno) = opt0.split_at(9);
 107         let ret = strno.parse::<u32>();
 108         if ret.is_err() { return false; }
 109         let streamno = ret.unwrap();
 110
 111         let sidx = if let Some(idx) = self.istr_opts.iter().position(|str| str.id == streamno) {
 112                 idx
 113             } else {
 114                 self.istr_opts.push(InputStreamOptions {id: streamno, drop: false, dec_opts: Vec::new() });
 115                 self.istr_opts.len() - 1
 116             };
 117         let istr = &mut self.istr_opts[sidx];
 118
 119         for opt in opt1.split(',') {
 120             let oval: Vec<_> = opt.split('=').collect();
 121             if oval.len() == 1 {
 122                 match oval[0] {
 123                     "drop" => { istr.drop = true; },
 124                     _ => {
 125                         istr.dec_opts.push(OptionArgs{ name: oval[0].to_string(), value: None });
 126                     },
 127                 };
 128             } else if oval.len() == 2 {
 129                 istr.dec_opts.push(OptionArgs{ name: oval[0].to_string(), value: Some(oval[1].to_string()) });
 130             } else {
 131                 println!("unrecognized option '{}'", opt);
 132             }
 133         }
 134         true
 135     }
 136     fn parse_ostream_options(&mut self, opt0: &str, opt1: &str, enc_reg: &RegisteredEncoders) -> bool {
 137         let (_, strno) = opt0.split_at(9);
 138         let ret = strno.parse::<u32>();
 139         if ret.is_err() { return false; }
 140         let streamno = ret.unwrap();
 141
 142         let sidx = if let Some(idx) = self.ostr_opts.iter().position(|str| str.id == streamno) {
 143                 idx
 144             } else {
 145                 self.ostr_opts.push(OutputStreamOptions {id: streamno, enc_name: String::new(), enc_params: EncodeParameters::default(), enc_opts: Vec::new() });
 146                 self.ostr_opts.len() - 1
 147             };
 148         let ostr = &mut self.ostr_opts[sidx];
 149
 150         for opt in opt1.split(',') {
 151             let oval: Vec<_> = opt.split('=').collect();
 152             if oval.len() == 1 {
 153                 match oval[0] {
 154                     "flip" => {
 155                         if ostr.enc_params.format == NACodecTypeInfo::None {
 156                             ostr.enc_params.format = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, YUV420_FORMAT));
 157                         }
 158                         if let NACodecTypeInfo::Video(ref mut vinfo) = ostr.enc_params.format {
 159                             vinfo.flipped = true;
 160                         } else {
 161                             println!("video option for audio stream");
 162                         }
 163                     },
 164                     "noflip" => {
 165                         if ostr.enc_params.format == NACodecTypeInfo::None {
 166                             ostr.enc_params.format = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, YUV420_FORMAT));
 167                         }
 168                         if let NACodecTypeInfo::Video(ref mut vinfo) = ostr.enc_params.format {
 169                             vinfo.flipped = false;
 170                         } else {
 171                             println!("video option for audio stream");
 172                         }
 173                     },
 174                     _ => {
 175                         ostr.enc_opts.push(OptionArgs{ name: oval[0].to_string(), value: None });
 176                     },
 177                 };
 178             } else if oval.len() == 2 {
 179 //todo parse encoder options, store, init later
 180                 match oval[0] {
 181                     "encoder" => {
 182                         if enc_reg.find_encoder(oval[1]).is_some() {
 183                             ostr.enc_name = oval[1].to_string();
 184                         } else {
 185                             println!("unknown encoder '{}'", oval[1]);
 186                             ostr.enc_name = oval[1].to_string();
 187                         }
 188                     },
 189                     "width" => {
 190                         if ostr.enc_params.format == NACodecTypeInfo::None {
 191                             ostr.enc_params.format = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, YUV420_FORMAT));
 192                         }
 193                         if let NACodecTypeInfo::Video(ref mut vinfo) = ostr.enc_params.format {
 194                             let ret = oval[1].parse::<usize>();
 195                             if let Ok(val) = ret {
 196                                 vinfo.width = val;
 197                             } else {
 198                                 println!("invalid width");
 199                             }
 200                         } else {
 201                             println!("video option for audio stream");
 202                         }
 203                     },
 204                     "height" => {
 205                         if ostr.enc_params.format == NACodecTypeInfo::None {
 206                             ostr.enc_params.format = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, YUV420_FORMAT));
 207                         }
 208                         if let NACodecTypeInfo::Video(ref mut vinfo) = ostr.enc_params.format {
 209                             let ret = oval[1].parse::<usize>();
 210                             if let Ok(val) = ret {
 211                                 vinfo.height = val;
 212                             } else {
 213                                 println!("invalid height");
 214                             }
 215                         } else {
 216                             println!("video option for audio stream");
 217                         }
 218                     },
 219 //todo formaton
 220                     "srate" => {
 221                         if ostr.enc_params.format == NACodecTypeInfo::None {
 222                             ostr.enc_params.format = NACodecTypeInfo::Audio(NAAudioInfo::new(0, 0, SND_S16_FORMAT, 0));
 223                         }
 224                         if let NACodecTypeInfo::Audio(ref mut ainfo) = ostr.enc_params.format {
 225                             let ret = oval[1].parse::<u32>();
 226                             if let Ok(val) = ret {
 227                                 ainfo.sample_rate = val;
 228                             } else {
 229                                 println!("invalid sampling rate");
 230                             }
 231                         } else {
 232                             println!("audio option for video stream");
 233                         }
 234                     },
 235                     "channels" => {
 236                         if ostr.enc_params.format == NACodecTypeInfo::None {
 237                             ostr.enc_params.format = NACodecTypeInfo::Audio(NAAudioInfo::new(0, 0, SND_S16_FORMAT, 0));
 238                         }
 239                         if let NACodecTypeInfo::Audio(ref mut ainfo) = ostr.enc_params.format {
 240                             let ret = oval[1].parse::<u8>();
 241                             if let Ok(val) = ret {
 242                                 ainfo.channels = val;
 243                             } else {
 244                                 println!("invalid number of channels");
 245                             }
 246                         } else {
 247                             println!("audio option for video stream");
 248                         }
 249                     },
 250                     "block_len" => {
 251                         if ostr.enc_params.format == NACodecTypeInfo::None {
 252                             ostr.enc_params.format = NACodecTypeInfo::Audio(NAAudioInfo::new(0, 0, SND_S16_FORMAT, 0));
 253                         }
 254                         if let NACodecTypeInfo::Audio(ref mut ainfo) = ostr.enc_params.format {
 255                             let ret = oval[1].parse::<usize>();
 256                             if let Ok(val) = ret {
 257                                 ainfo.block_len = val;
 258                             } else {
 259                                 println!("invalid block_length");
 260                             }
 261                         } else {
 262                             println!("audio option for video stream");
 263                         }
 264                     },
 265 //todo soniton, channel map
 266                     "bitrate" => {
 267                         let ret = oval[1].parse::<u32>();
 268                         if let Ok(val) = ret {
 269                             ostr.enc_params.bitrate = val;
 270                         } else {
 271                             println!("invalid bitrate value");
 272                         }
 273                     },
 274                     "quality" => {
 275                         let ret = oval[1].parse::<u8>();
 276                         if let Ok(val) = ret {
 277                             ostr.enc_params.quality = val;
 278                         } else {
 279                             println!("invalid quality value");
 280                         }
 281                     },
 282                     _ => {
 283                         ostr.enc_opts.push(OptionArgs{ name: oval[0].to_string(), value: Some(oval[1].to_string()) });
 284                     },
 285                 }
 286             } else {
 287                 println!("unrecognized option '{}'", opt);
 288             }
 289         }
 290         true
 291     }
 292     fn parse_demuxer_options(&mut self, opts: &str, dmx_reg: &RegisteredDemuxers) -> bool {
 293         for opt in opts.split(',') {
 294             let oval: Vec<_> = opt.split('=').collect();
 295             if oval.len() == 1 {
 296                 self.demux_opts.push(OptionArgs{ name: oval[0].to_string(), value: None });
 297             } else if oval.len() == 2 {
 298                 if oval[0] == "format" {
 299                     if dmx_reg.find_demuxer(oval[1]).is_some() {
 300                         self.input_fmt = Some(oval[1].to_string());
 301                     } else {
 302                         println!("unknown demuxer format '{}'", oval[1]);
 303                     }
 304                 } else {
 305                     self.demux_opts.push(OptionArgs{ name: oval[0].to_string(), value: Some(oval[1].to_string()) });
 306                 }
 307             } else {
 308                 println!("unrecognized option '{}'", opt);
 309             }
 310         }
 311         true
 312     }
 313     fn parse_muxer_options(&mut self, opts: &str, mux_reg: &RegisteredMuxers) -> bool {
 314         for opt in opts.split(',') {
 315             let oval: Vec<_> = opt.split('=').collect();
 316             if oval.len() == 1 {
 317                 self.mux_opts.push(OptionArgs{ name: oval[0].to_string(), value: None });
 318             } else if oval.len() == 2 {
 319                 if oval[0] == "format" {
 320                     if mux_reg.find_muxer(oval[1]).is_some() {
 321                         self.output_fmt = Some(oval[1].to_string());
 322                     } else {
 323                         println!("unknown muxer format '{}'", oval[1]);
 324                     }
 325                 } else {
 326                     self.mux_opts.push(OptionArgs{ name: oval[0].to_string(), value: Some(oval[1].to_string()) });
 327                 }
 328             } else {
 329                 println!("unrecognized option '{}'", opt);
 330             }
 331         }
 332         true
 333     }
 334     fn apply_decoder_options(&self, dec: &mut NADecoder, str_id: u32) {
 335         if let Some(str_idx) = self.istr_opts.iter().position(|str| str.id == str_id) {
 336             let dec_opts = dec.get_supported_options();
 337             if dec_opts.is_empty() { return; }
 338             let name = format!("input stream {}", str_id);
 339             parse_and_apply_options!(dec, &self.istr_opts[str_idx].dec_opts, name);
 340         }
 341     }
 342     fn register_output_stream(&mut self, cname: &str, istr: NAStreamRef, out_sm: &mut StreamManager, enc_reg: &RegisteredEncoders) -> bool {
 343         let out_id = out_sm.get_num_streams() as u32;
 344         if let Some(str_idx) = self.istr_opts.iter().position(|str| str.id == (istr.get_num() as u32)) {
 345             if self.istr_opts[str_idx].drop {
 346                 self.encoders.push(OutputMode::Drop);
 347                 return true;
 348             }
 349         }
 350
 351         if let Some(str_idx) = self.ostr_opts.iter().position(|str| str.id == out_id) {
 352             let oopts = &mut self.ostr_opts[str_idx];
 353             if oopts.enc_name.as_str() == "copy" && (cname == "any" || istr.get_info().get_name() == cname) {
 354                 out_sm.add_stream_ref(istr.clone());
 355                 self.encoders.push(OutputMode::Copy(out_id));
 356             } else if cname == "any" || oopts.enc_name.as_str() == cname {
 357                 let enc_create = enc_reg.find_encoder(oopts.enc_name.as_str());
 358                 if enc_create.is_none() {
 359                     println!("encoder '{}' not found", oopts.enc_name.as_str());
 360                     return false;
 361                 }
 362                 let mut encoder = (enc_create.unwrap())();
 363                 if oopts.enc_params.format == NACodecTypeInfo::None {
 364                     oopts.enc_params.format = istr.get_info().get_properties();
 365                 }
 366                 if oopts.enc_params.tb_num == 0 {
 367                     oopts.enc_params.tb_num = istr.tb_num;
 368                     oopts.enc_params.tb_den = istr.tb_den;
 369                 }
 370                 let ret_eparams = encoder.negotiate_format(&oopts.enc_params);
 371                 if ret_eparams.is_err() {
 372                     println!("cannot negotiate encoding parameters");
 373                     return false;
 374                 }
 375                 let ret_eparams = ret_eparams.unwrap();
 376
 377 //todo check for params mismatch
 378                 let cvt = match (&oopts.enc_params.format, &ret_eparams.format) {
 379                         (NACodecTypeInfo::Video(svinfo), NACodecTypeInfo::Video(dvinfo)) => {
 380                             if svinfo == dvinfo {
 381                                 OutputConvert::None
 382                             } else {
 383                                 let ofmt = ScaleInfo { fmt: dvinfo.format, width: dvinfo.width, height: dvinfo.height };
 384                                 let ret = NAScale::new(ofmt, ofmt);
 385                                 if ret.is_err() {
 386                                     println!("cannot create scaler");
 387                                     return false;
 388                                 }
 389                                 let scaler = ret.unwrap();
 390                                 let ret = alloc_video_buffer(*dvinfo, 4);
 391                                 if ret.is_err() {
 392                                     println!("cannot create scaler buffer");
 393                                     return false;
 394                                 }
 395                                 let cvt_buf = ret.unwrap();
 396                                 OutputConvert::Video(scaler, cvt_buf)
 397                             }
 398                         },
 399                         (NACodecTypeInfo::Audio(sainfo), NACodecTypeInfo::Audio(dainfo)) => {
 400                             if sainfo == dainfo {
 401                                 OutputConvert::None
 402                             } else {
 403                                 let dchmap = match dainfo.channels {
 404                                         1 => NAChannelMap::from_ms_mapping(0x4),
 405                                         2 => NAChannelMap::from_ms_mapping(0x3),
 406                                         _ => {
 407 println!("can't generate default channel map for {} channels", dainfo.channels);
 408                                             return false;
 409                                         },
 410                                     };
 411 //todo channelmap
 412                                 OutputConvert::Audio(*dainfo, dchmap)
 413                             }
 414                         },
 415                         _ => OutputConvert::None,
 416                     };
 417                 let ret = encoder.init(out_id, ret_eparams);
 418                 if ret.is_err() {
 419                     println!("error initialising encoder");
 420                     return false;
 421                 }
 422                 out_sm.add_stream_ref(ret.unwrap());
 423
 424                 let name = format!("output stream {}", out_id);
 425                 parse_and_apply_options!(encoder, &oopts.enc_opts, name);
 426
 427                 self.encoders.push(OutputMode::Encode(out_id, encoder, cvt));
 428             } else {
 429 println!("encoder {} is not supported by output (expected {})", istr.id, istr.get_info().get_name());
 430                 return false;
 431             }
 432         } else {
 433             if cname == "any" || istr.get_info().get_name() == cname {
 434                 out_sm.add_stream_ref(istr.clone());
 435                 self.encoders.push(OutputMode::Copy(out_id));
 436             } else {
 437 println!("stream {} ({}) can't be handled", istr.id, istr.get_info().get_name());
 438 // todo autoselect encoder?
 439                 return false;
 440             }
 441         }
 442         true
 443     }
 444     fn map_single(&mut self, cname: &str, ctype: StreamType, src_sm: &StreamManager, out_sm: &mut StreamManager, enc_reg: &RegisteredEncoders) -> bool {
 445         let mut found_stream = false;
 446         for istr in src_sm.iter() {
 447             if istr.get_media_type() != ctype || found_stream {
 448                 self.encoders.push(OutputMode::Drop);
 449             } else {
 450                 if !self.register_output_stream(cname, istr, out_sm, enc_reg) {
 451                     return false;
 452                 }
 453                 found_stream = true;
 454             }
 455         }
 456         found_stream
 457     }
 458     fn negotiate_stream_map(&mut self, src_sm: &StreamManager, mux_caps: MuxerCapabilities, out_sm: &mut StreamManager, enc_reg: &RegisteredEncoders) -> bool {
 459         match mux_caps {
 460             MuxerCapabilities::SingleVideo(cname) => {
 461                 if self.no_video { return false; }
 462                 self.map_single(cname, StreamType::Video, src_sm, out_sm, enc_reg)
 463             },
 464             MuxerCapabilities::SingleAudio(cname) => {
 465                 if self.no_audio { return false; }
 466                 self.map_single(cname, StreamType::Audio, src_sm, out_sm, enc_reg)
 467             },
 468             MuxerCapabilities::SingleVideoAndAudio(vname, aname) => {
 469                 let mut found_vid = false;
 470                 let mut found_aud = false;
 471                 for istr in src_sm.iter() {
 472                     if istr.get_media_type() == StreamType::Video && !found_vid && !self.no_video {
 473                         if !self.register_output_stream(vname, istr, out_sm, enc_reg) {
 474                             return false;
 475                         }
 476                         found_vid = true;
 477                     } else if istr.get_media_type() == StreamType::Audio && !found_aud && !self.no_audio {
 478                         if !self.register_output_stream(aname, istr, out_sm, enc_reg) {
 479                             return false;
 480                         }
 481                         found_aud = true;
 482                     } else {
 483                         self.encoders.push(OutputMode::Drop);
 484                     }
 485                 }
 486                 found_vid | found_aud
 487             },
 488             MuxerCapabilities::OnlyVideo => {
 489                 if self.no_video { return false; }
 490
 491                 let mut found_vid = false;
 492                 for istr in src_sm.iter() {
 493                     if istr.get_media_type() == StreamType::Video && !found_vid {
 494                         if !self.register_output_stream("any", istr, out_sm, enc_reg) {
 495                             return false;
 496                         }
 497                         found_vid = true;
 498                     } else {
 499                         self.encoders.push(OutputMode::Drop);
 500                     }
 501                 }
 502                 found_vid
 503             },
 504             MuxerCapabilities::OnlyAudio => {
 505                 if self.no_audio { return false; }
 506
 507                 let mut found_aud = false;
 508                 for istr in src_sm.iter() {
 509                     if istr.get_media_type() == StreamType::Audio && !found_aud {
 510                         if !self.register_output_stream("any", istr, out_sm, enc_reg) {
 511                             return false;
 512                         }
 513                         found_aud = true;
 514                     } else {
 515                         self.encoders.push(OutputMode::Drop);
 516                     }
 517                 }
 518                 found_aud
 519             },
 520             MuxerCapabilities::Universal => {
 521                 for istr in src_sm.iter() {
 522                     if (istr.get_media_type() == StreamType::Video && self.no_video) ||
 523                         (istr.get_media_type() == StreamType::Audio && self.no_audio) {
 524                         self.encoders.push(OutputMode::Drop);
 525                         continue;
 526                     }
 527                     if !self.register_output_stream("any", istr, out_sm, enc_reg) {
 528                         return false;
 529                     }
 530                 }
 531                 true
 532             },
 533         }
 534     }
 535 }
 536
 537 macro_rules! next_arg {
 538     ($args: expr, $arg_idx: expr) => {
 539         if $arg_idx + 1 >= $args.len() {
 540             println!("codec name is required");
 541         }
 542         $arg_idx += 1;
 543     }
 544 }
 545
 546 fn main() {
 547     let args: Vec<_> = env::args().collect();
 548
 549     if args.len() == 1 {
 550         println!("usage: nihav-encoder [-noout] [-vn] [-an] input [lastpts]");
 551         return;
 552     }
 553
 554     let mut dmx_reg = RegisteredDemuxers::new();
 555     nihav_register_all_demuxers(&mut dmx_reg);
 556     let mut dec_reg = RegisteredDecoders::new();
 557     nihav_register_all_codecs(&mut dec_reg);
 558
 559     let mut mux_reg = RegisteredMuxers::new();
 560     nihav_register_all_muxers(&mut mux_reg);
 561     let mut enc_reg = RegisteredEncoders::new();
 562     nihav_register_all_encoders(&mut enc_reg);
 563
 564     let mut transcoder = Transcoder::new();
 565
 566     let mut arg_idx = 1;
 567     while arg_idx < args.len() {
 568         match args[arg_idx].as_str() {
 569             "--query-decoder-options" => {
 570                 next_arg!(args, arg_idx);
 571                 let cname = args[arg_idx].as_str();
 572                 if let Some(decfunc) = dec_reg.find_decoder(cname) {
 573                     let dec = (decfunc)();
 574                     let opts = dec.get_supported_options();
 575                     print_options(cname, opts);
 576                 } else {
 577                     println!("codec {} is not found", cname);
 578                 }
 579             },
 580             "--query-demuxer-options" => {
 581                 next_arg!(args, arg_idx);
 582                 let dname = args[arg_idx].as_str();
 583                 let mut mr = MemoryReader::new_read(&[]);
 584                 let mut br = ByteReader::new(&mut mr);
 585                 if let Some(dmx_creator) = dmx_reg.find_demuxer(dname) {
 586                     let dmx = dmx_creator.new_demuxer(&mut br);
 587                     let opts = dmx.get_supported_options();
 588                     print_options(dname, opts);
 589                 } else {
 590                     println!("demuxer {} is not found", dname);
 591                 }
 592             },
 593             "--query-encoder-options" => {
 594                 next_arg!(args, arg_idx);
 595                 let cname = args[arg_idx].as_str();
 596                 if let Some(encfunc) = enc_reg.find_encoder(cname) {
 597                     let enc = (encfunc)();
 598                     let opts = enc.get_supported_options();
 599                     print_options(cname, opts);
 600                 } else {
 601                     println!("codec {} is not found", cname);
 602                 }
 603             },
 604             "--query-muxer-options" => {
 605                 next_arg!(args, arg_idx);
 606                 let name = args[arg_idx].as_str();
 607                 let mut data = [];
 608                 let mut mw = MemoryWriter::new_write(&mut data);
 609                 let mut bw = ByteWriter::new(&mut mw);
 610                 if let Some(mux_creator) = mux_reg.find_muxer(name) {
 611                     let mux = mux_creator.new_muxer(&mut bw);
 612                     let opts = mux.get_supported_options();
 613                     print_options(name, opts);
 614                 } else {
 615                     println!("muxer {} is not found", name);
 616                 }
 617             },
 618             "--input" => {
 619                 next_arg!(args, arg_idx);
 620                 transcoder.input_name = args[arg_idx].clone();
 621             },
 622             "--input-format" => {
 623                 next_arg!(args, arg_idx);
 624                 transcoder.input_fmt = Some(args[arg_idx].clone());
 625             },
 626             "--output" => {
 627                 next_arg!(args, arg_idx);
 628                 transcoder.output_name = args[arg_idx].clone();
 629             },
 630             "--output-format" => {
 631                 next_arg!(args, arg_idx);
 632                 transcoder.output_fmt = Some(args[arg_idx].clone());
 633             },
 634             "--demuxer-options" => {
 635                 next_arg!(args, arg_idx);
 636                 if !transcoder.parse_demuxer_options(&args[arg_idx], &dmx_reg) {
 637                     println!("invalid demuxer option syntax");
 638                     return;
 639                 }
 640             },
 641             "--no-video" => {
 642                 transcoder.no_video = true;
 643             },
 644             "--no-audio" => {
 645                 transcoder.no_audio = true;
 646             },
 647             "--muxer-options" => {
 648                 next_arg!(args, arg_idx);
 649                 if !transcoder.parse_muxer_options(&args[arg_idx], &mux_reg) {
 650                     println!("invalid muxer option syntax");
 651                     return;
 652                 }
 653             },
 654             _ => {
 655                 if args[arg_idx].starts_with("--istream") {
 656                     let opt0 = &args[arg_idx];
 657                     next_arg!(args, arg_idx);
 658                     if !transcoder.parse_istream_options(opt0, &args[arg_idx]) {
 659                         println!("invalid input stream option syntax");
 660                         return;
 661                     }
 662                 } else if args[arg_idx].starts_with("--ostream") {
 663                     let opt0 = &args[arg_idx];
 664                     next_arg!(args, arg_idx);
 665                     if !transcoder.parse_ostream_options(opt0, &args[arg_idx], &enc_reg) {
 666                         println!("invalid output stream option syntax");
 667                         return;
 668                     }
 669                 } else if args[arg_idx].starts_with("--") {
 670                     println!("unknown option");
 671                 } else {
 672                     println!("unrecognized argument");
 673                 }
 674             },
 675         };
 676         arg_idx += 1;
 677     }
 678
 679     if transcoder.input_name.len() == 0 {
 680         println!("no input name provided");
 681         return;
 682     }
 683     if transcoder.output_name.len() == 0 {
 684         println!("no output name provided");
 685         return;
 686     }
 687
 688     let res = File::open(transcoder.input_name.as_str());
 689     if res.is_err() {
 690         println!("error opening input");
 691         return;
 692     }
 693     let mut file = res.unwrap();
 694     let mut fr = FileReader::new_read(&mut file);
 695     let mut br = ByteReader::new(&mut fr);
 696
 697     let dmx_name = if let Some(ref str) = transcoder.input_fmt {
 698             str.as_str()
 699         } else {
 700             if let Some((dmx_name, score)) = detect::detect_format(transcoder.input_name.as_str(), &mut br) {
 701                 println!("detected {} with score {:?}", dmx_name, score);
 702                 dmx_name
 703             } else {
 704                 println!("cannot detect input format");
 705                 return;
 706             }
 707         };
 708     let ret = dmx_reg.find_demuxer(dmx_name);
 709     if ret.is_none() {
 710         println!("cannot find demuxer for '{}'", dmx_name);
 711         return;
 712     }
 713     let dmx_fact = ret.unwrap();
 714     br.seek(SeekFrom::Start(0)).unwrap();
 715     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 716     parse_and_apply_options!(dmx, &transcoder.demux_opts, "input");
 717     for i in 0..dmx.get_num_streams() {
 718         let s = dmx.get_stream(i).unwrap();
 719         let info = s.get_info();
 720         let decfunc = dec_reg.find_decoder(info.get_name());
 721 println!("stream {} - {} {}", i, s, info.get_name());
 722         let str_id = s.get_num() as u32;
 723         if let Some(create_dec) = decfunc {
 724             let mut dec = (create_dec)();
 725             let mut dsupp = Box::new(NADecoderSupport::new());
 726             let ret = dec.init(&mut dsupp, info.clone());
 727             if ret.is_err() {
 728                 println!("Error initialising decoder '{}' for stream {}", info.get_name(), str_id);
 729                 return;
 730             }
 731             transcoder.apply_decoder_options(dec.as_mut(), str_id);
 732             transcoder.decoders.push(Some((dsupp, dec)));
 733         } else {
 734             println!("No decoder for stream {} ({}) is found", str_id, info.get_name());
 735             transcoder.decoders.push(None);
 736         }
 737     }
 738
 739     let output_fmt = if let Some(ref str) = transcoder.output_fmt {
 740             str
 741         } else {
 742             if let Some(str) = detect::detect_format_by_name(transcoder.output_name.as_str()) {
 743                 str
 744             } else {
 745                 println!("Cannot guess muxer for output");
 746                 return;
 747             }
 748         };
 749     let ret = mux_reg.find_muxer(output_fmt);
 750     let ofmt = output_fmt.to_string();
 751
 752     if ret.is_none() {
 753         println!("cannot find muxer '{}'", output_fmt);
 754     }
 755     let mux_creator = ret.unwrap();
 756
 757     let mux_caps = mux_creator.get_capabilities();
 758     let mut out_sm = StreamManager::new();
 759     if !transcoder.negotiate_stream_map(dmx.get_stream_manager(), mux_caps, &mut out_sm, &enc_reg) {
 760         println!("cannot determine stream map");
 761         return;
 762     }
 763
 764     let ret = File::create(transcoder.output_name.as_str());
 765     if ret.is_err() {
 766         println!("cannot open output file");
 767         return;
 768     }
 769     let mut fw = FileWriter::new_write(ret.unwrap());
 770     let mut bw = ByteWriter::new(&mut fw);
 771     let ret = create_muxer(mux_creator, out_sm, &mut bw);
 772     if let Err(err) = ret {
 773         println!("cannot create muxer instance {:?}", err);
 774         return;
 775     }
 776     let mut mux = ret.unwrap();
 777     parse_and_apply_options!(mux, &transcoder.mux_opts, "output");
 778
 779     println!("Output {} muxer {}", transcoder.output_name, ofmt);
 780     for ostr in mux.get_streams() {
 781         println!(" #{}: {} {}", ostr.get_num(), ostr, ostr.get_info().get_name());
 782     }
 783
 784     loop {
 785         let pktres = dmx.get_frame();
 786         if let Err(DemuxerError::EOF) = pktres { break; }
 787         if pktres.is_err() {
 788             println!("demuxing error");
 789             break;
 790         }
 791         let mut pkt = pktres.unwrap();
 792         let src_id = pkt.get_stream().get_num();
 793         match transcoder.encoders[src_id] {
 794             OutputMode::Drop => {},
 795             OutputMode::Copy(dst_id) => {
 796                 let dstr = mux.get_stream(dst_id as usize).unwrap();
 797                 pkt.reassign(dstr, pkt.get_time_information());
 798                 if mux.mux_frame(pkt).is_err() {
 799                     println!("error muxing packet");
 800                     break;
 801                 }
 802             },
 803             OutputMode::Encode(dst_id, ref mut encoder, ref mut cvt) => {
 804                 if let Some((ref mut dsupp, ref mut decoder)) = transcoder.decoders[src_id] {
 805                     let ret = decoder.decode(dsupp, &pkt);
 806                     if ret.is_err() {
 807                         println!("error decoding stream {}", src_id);
 808                         break;
 809                     }
 810                     let frm = ret.unwrap();
 811                     let buf = frm.get_buffer();
 812                     let cbuf = match cvt {
 813                             OutputConvert::None => buf,
 814                             OutputConvert::Video(ref mut scaler, ref mut dbuf) => {
 815                                 let cur_ifmt = get_scale_fmt_from_pic(&buf);
 816                                 let last_ifmt = scaler.get_in_fmt();
 817                                 if cur_ifmt != last_ifmt {
 818                                     let ofmt = scaler.get_out_fmt();
 819                                     let ret = NAScale::new(cur_ifmt, ofmt);
 820                                     if ret.is_err() {
 821                                         println!("error re-initialising scaler for {} -> {}", cur_ifmt, ofmt);
 822                                         break;
 823                                     }
 824                                     *scaler = ret.unwrap();
 825                                 }
 826                                 let ret = scaler.convert(&buf, dbuf);
 827                                 if ret.is_err() {
 828                                     println!("error converting frame for encoding");
 829                                     break;
 830                                 }
 831                                 dbuf.clone()
 832                             },
 833                             OutputConvert::Audio(ref dinfo, ref dchmap) => {
 834                                 let ret = convert_audio_frame(&buf, dinfo, dchmap);
 835                                 if ret.is_err() {
 836                                     println!("error converting audio for stream {}", dst_id);
 837                                     break;
 838                                 }
 839                                 ret.unwrap()
 840                             },
 841                         };
 842                     let cfrm = NAFrame::new(frm.get_time_information(), frm.frame_type, frm.key, frm.get_info(), cbuf);
 843                     encoder.encode(&cfrm).unwrap();
 844                     while let Ok(Some(pkt)) = encoder.get_packet() {
 845                         mux.mux_frame(pkt).unwrap();
 846                     }
 847                 } else {
 848                     println!("no decoder for stream {}", src_id);
 849                     break;
 850                 }
 851             },
 852         };
 853     }
 854     'flush_loop: for enc in transcoder.encoders.iter_mut() {
 855         match enc {
 856             OutputMode::Encode(str_id, ref mut encoder, _) => {
 857                 let ret = encoder.flush();
 858                 if ret.is_err() {
 859                     println!("error flushing encoder for stream {}", str_id);
 860                     break;
 861                 } else {
 862                     while let Ok(Some(pkt)) = encoder.get_packet() {
 863                         if mux.mux_frame(pkt).is_err() {
 864                             println!("error muxing packet");
 865                             break 'flush_loop;
 866                         }
 867                     }
 868                 }
 869             },
 870             _ => {},
 871         };
 872     }
 873
 874     let ret = mux.end();
 875     if ret.is_err() {
 876         println!("error at finalising muxing");
 877     }
 878 }