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 mod null;
  20 use null::*;
  21
  22 fn print_options(name: &str, options: &[NAOptionDefinition]) {
  23     if options.is_empty() {
  24         println!("No custom options.");
  25     } else {
  26         println!("Options for '{}'", name);
  27         for opt in options.iter() {
  28             println!(" {}", opt);
  29         }
  30     }
  31 }
  32
  33 struct OptionArgs {
  34     name:   String,
  35     value:  Option<String>,
  36 }
  37
  38 struct InputStreamOptions {
  39     id:             u32,
  40     drop:           bool,
  41     dec_opts:       Vec<OptionArgs>,
  42 }
  43
  44 struct OutputStreamOptions {
  45     id:             u32,
  46     enc_params:     EncodeParameters,
  47     enc_name:       String,
  48     enc_opts:       Vec<OptionArgs>,
  49 }
  50
  51 enum OutputConvert {
  52     Video(NAScale, NABufferType),
  53     Audio(NAAudioInfo, NAChannelMap),
  54     None,
  55 }
  56
  57 enum OutputMode {
  58     Drop,
  59     Copy(u32),
  60     Encode(u32, Box<dyn NAEncoder>, OutputConvert),
  61 }
  62
  63 #[derive(Default)]
  64 struct Transcoder {
  65     input_name:     String,
  66     input_fmt:      Option<String>,
  67     output_name:    String,
  68     output_fmt:     Option<String>,
  69     demux_opts:     Vec<OptionArgs>,
  70     mux_opts:       Vec<OptionArgs>,
  71     istr_opts:      Vec<InputStreamOptions>,
  72     ostr_opts:      Vec<OutputStreamOptions>,
  73     decoders:       Vec<Option<(Box<NADecoderSupport>, Box<dyn NADecoder>)>>,
  74     encoders:       Vec<OutputMode>,
  75     no_video:       bool,
  76     no_audio:       bool,
  77 }
  78
  79 macro_rules! parse_and_apply_options {
  80     ($obj: expr, $in_opts: expr, $name: expr) => {
  81         let mut opts = Vec::with_capacity($in_opts.len());
  82         let opt_def = $obj.get_supported_options();
  83         for opt in $in_opts.iter() {
  84             let mut found = false;
  85             for opt_def in opt_def.iter() {
  86                 if opt.name == opt_def.name {
  87                     let arg = if let Some(ref str) = opt.value { Some(str) } else { None };
  88                     let ret = opt_def.parse(&opt.name, arg);
  89                     if ret.is_err() {
  90                         println!("invalid option {} for {}", opt.name, $name);
  91                     } else {
  92                         let (val, _) = ret.unwrap();
  93                         opts.push(val);
  94                     }
  95                     found = true;
  96                 }
  97             }
  98             if !found {
  99                 println!("  ignoring option '{}' for {}", opt.name, $name);
 100             }
 101         }
 102         $obj.set_options(opts.as_slice());
 103     }
 104 }
 105
 106 impl Transcoder {
 107     fn new() -> Self { Self::default() }
 108     fn parse_istream_options(&mut self, opt0: &str, opt1: &str) -> bool {
 109         let (_, strno) = opt0.split_at(9);
 110         let ret = strno.parse::<u32>();
 111         if ret.is_err() { return false; }
 112         let streamno = ret.unwrap();
 113
 114         let sidx = if let Some(idx) = self.istr_opts.iter().position(|str| str.id == streamno) {
 115                 idx
 116             } else {
 117                 self.istr_opts.push(InputStreamOptions {id: streamno, drop: false, dec_opts: Vec::new() });
 118                 self.istr_opts.len() - 1
 119             };
 120         let istr = &mut self.istr_opts[sidx];
 121
 122         for opt in opt1.split(',') {
 123             let oval: Vec<_> = opt.split('=').collect();
 124             if oval.len() == 1 {
 125                 match oval[0] {
 126                     "drop" => { istr.drop = true; },
 127                     _ => {
 128                         istr.dec_opts.push(OptionArgs{ name: oval[0].to_string(), value: None });
 129                     },
 130                 };
 131             } else if oval.len() == 2 {
 132                 istr.dec_opts.push(OptionArgs{ name: oval[0].to_string(), value: Some(oval[1].to_string()) });
 133             } else {
 134                 println!("unrecognized option '{}'", opt);
 135             }
 136         }
 137         true
 138     }
 139     fn parse_ostream_options(&mut self, opt0: &str, opt1: &str, enc_reg: &RegisteredEncoders) -> bool {
 140         let (_, strno) = opt0.split_at(9);
 141         let ret = strno.parse::<u32>();
 142         if ret.is_err() { return false; }
 143         let streamno = ret.unwrap();
 144
 145         let sidx = if let Some(idx) = self.ostr_opts.iter().position(|str| str.id == streamno) {
 146                 idx
 147             } else {
 148                 self.ostr_opts.push(OutputStreamOptions {id: streamno, enc_name: String::new(), enc_params: EncodeParameters::default(), enc_opts: Vec::new() });
 149                 self.ostr_opts.len() - 1
 150             };
 151         let ostr = &mut self.ostr_opts[sidx];
 152
 153         for opt in opt1.split(',') {
 154             let oval: Vec<_> = opt.split('=').collect();
 155             if oval.len() == 1 {
 156                 match oval[0] {
 157                     "flip" => {
 158                         if ostr.enc_params.format == NACodecTypeInfo::None {
 159                             ostr.enc_params.format = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, YUV420_FORMAT));
 160                         }
 161                         if let NACodecTypeInfo::Video(ref mut vinfo) = ostr.enc_params.format {
 162                             vinfo.flipped = true;
 163                         } else {
 164                             println!("video option for audio stream");
 165                         }
 166                     },
 167                     "noflip" => {
 168                         if ostr.enc_params.format == NACodecTypeInfo::None {
 169                             ostr.enc_params.format = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, YUV420_FORMAT));
 170                         }
 171                         if let NACodecTypeInfo::Video(ref mut vinfo) = ostr.enc_params.format {
 172                             vinfo.flipped = false;
 173                         } else {
 174                             println!("video option for audio stream");
 175                         }
 176                     },
 177                     _ => {
 178                         ostr.enc_opts.push(OptionArgs{ name: oval[0].to_string(), value: None });
 179                     },
 180                 };
 181             } else if oval.len() == 2 {
 182 //todo parse encoder options, store, init later
 183                 match oval[0] {
 184                     "encoder" => {
 185                         if enc_reg.find_encoder(oval[1]).is_some() {
 186                             ostr.enc_name = oval[1].to_string();
 187                         } else {
 188                             println!("unknown encoder '{}'", oval[1]);
 189                             ostr.enc_name = oval[1].to_string();
 190                         }
 191                     },
 192                     "width" => {
 193                         if ostr.enc_params.format == NACodecTypeInfo::None {
 194                             ostr.enc_params.format = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, YUV420_FORMAT));
 195                         }
 196                         if let NACodecTypeInfo::Video(ref mut vinfo) = ostr.enc_params.format {
 197                             let ret = oval[1].parse::<usize>();
 198                             if let Ok(val) = ret {
 199                                 vinfo.width = val;
 200                             } else {
 201                                 println!("invalid width");
 202                             }
 203                         } else {
 204                             println!("video option for audio stream");
 205                         }
 206                     },
 207                     "height" => {
 208                         if ostr.enc_params.format == NACodecTypeInfo::None {
 209                             ostr.enc_params.format = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, YUV420_FORMAT));
 210                         }
 211                         if let NACodecTypeInfo::Video(ref mut vinfo) = ostr.enc_params.format {
 212                             let ret = oval[1].parse::<usize>();
 213                             if let Ok(val) = ret {
 214                                 vinfo.height = val;
 215                             } else {
 216                                 println!("invalid height");
 217                             }
 218                         } else {
 219                             println!("video option for audio stream");
 220                         }
 221                     },
 222 //todo formaton
 223                     "srate" => {
 224                         if ostr.enc_params.format == NACodecTypeInfo::None {
 225                             ostr.enc_params.format = NACodecTypeInfo::Audio(NAAudioInfo::new(0, 0, SND_S16_FORMAT, 0));
 226                         }
 227                         if let NACodecTypeInfo::Audio(ref mut ainfo) = ostr.enc_params.format {
 228                             let ret = oval[1].parse::<u32>();
 229                             if let Ok(val) = ret {
 230                                 ainfo.sample_rate = val;
 231                             } else {
 232                                 println!("invalid sampling rate");
 233                             }
 234                         } else {
 235                             println!("audio option for video stream");
 236                         }
 237                     },
 238                     "channels" => {
 239                         if ostr.enc_params.format == NACodecTypeInfo::None {
 240                             ostr.enc_params.format = NACodecTypeInfo::Audio(NAAudioInfo::new(0, 0, SND_S16_FORMAT, 0));
 241                         }
 242                         if let NACodecTypeInfo::Audio(ref mut ainfo) = ostr.enc_params.format {
 243                             let ret = oval[1].parse::<u8>();
 244                             if let Ok(val) = ret {
 245                                 ainfo.channels = val;
 246                             } else {
 247                                 println!("invalid number of channels");
 248                             }
 249                         } else {
 250                             println!("audio option for video stream");
 251                         }
 252                     },
 253                     "block_len" => {
 254                         if ostr.enc_params.format == NACodecTypeInfo::None {
 255                             ostr.enc_params.format = NACodecTypeInfo::Audio(NAAudioInfo::new(0, 0, SND_S16_FORMAT, 0));
 256                         }
 257                         if let NACodecTypeInfo::Audio(ref mut ainfo) = ostr.enc_params.format {
 258                             let ret = oval[1].parse::<usize>();
 259                             if let Ok(val) = ret {
 260                                 ainfo.block_len = val;
 261                             } else {
 262                                 println!("invalid block_length");
 263                             }
 264                         } else {
 265                             println!("audio option for video stream");
 266                         }
 267                     },
 268 //todo soniton, channel map
 269                     "bitrate" => {
 270                         let ret = oval[1].parse::<u32>();
 271                         if let Ok(val) = ret {
 272                             ostr.enc_params.bitrate = val;
 273                         } else {
 274                             println!("invalid bitrate value");
 275                         }
 276                     },
 277                     "quality" => {
 278                         let ret = oval[1].parse::<u8>();
 279                         if let Ok(val) = ret {
 280                             ostr.enc_params.quality = val;
 281                         } else {
 282                             println!("invalid quality value");
 283                         }
 284                     },
 285                     _ => {
 286                         ostr.enc_opts.push(OptionArgs{ name: oval[0].to_string(), value: Some(oval[1].to_string()) });
 287                     },
 288                 }
 289             } else {
 290                 println!("unrecognized option '{}'", opt);
 291             }
 292         }
 293         true
 294     }
 295     fn parse_demuxer_options(&mut self, opts: &str, dmx_reg: &RegisteredDemuxers) -> bool {
 296         for opt in opts.split(',') {
 297             let oval: Vec<_> = opt.split('=').collect();
 298             if oval.len() == 1 {
 299                 self.demux_opts.push(OptionArgs{ name: oval[0].to_string(), value: None });
 300             } else if oval.len() == 2 {
 301                 if oval[0] == "format" {
 302                     if dmx_reg.find_demuxer(oval[1]).is_some() {
 303                         self.input_fmt = Some(oval[1].to_string());
 304                     } else {
 305                         println!("unknown demuxer format '{}'", oval[1]);
 306                     }
 307                 } else {
 308                     self.demux_opts.push(OptionArgs{ name: oval[0].to_string(), value: Some(oval[1].to_string()) });
 309                 }
 310             } else {
 311                 println!("unrecognized option '{}'", opt);
 312             }
 313         }
 314         true
 315     }
 316     fn parse_muxer_options(&mut self, opts: &str, mux_reg: &RegisteredMuxers) -> bool {
 317         for opt in opts.split(',') {
 318             let oval: Vec<_> = opt.split('=').collect();
 319             if oval.len() == 1 {
 320                 self.mux_opts.push(OptionArgs{ name: oval[0].to_string(), value: None });
 321             } else if oval.len() == 2 {
 322                 if oval[0] == "format" {
 323                     if mux_reg.find_muxer(oval[1]).is_some() {
 324                         self.output_fmt = Some(oval[1].to_string());
 325                     } else {
 326                         println!("unknown muxer format '{}'", oval[1]);
 327                     }
 328                 } else {
 329                     self.mux_opts.push(OptionArgs{ name: oval[0].to_string(), value: Some(oval[1].to_string()) });
 330                 }
 331             } else {
 332                 println!("unrecognized option '{}'", opt);
 333             }
 334         }
 335         true
 336     }
 337     fn apply_decoder_options(&self, dec: &mut NADecoder, str_id: u32) {
 338         if let Some(str_idx) = self.istr_opts.iter().position(|str| str.id == str_id) {
 339             let dec_opts = dec.get_supported_options();
 340             if dec_opts.is_empty() { return; }
 341             let name = format!("input stream {}", str_id);
 342             parse_and_apply_options!(dec, &self.istr_opts[str_idx].dec_opts, name);
 343         }
 344     }
 345     fn register_output_stream(&mut self, cname: &str, istr: NAStreamRef, out_sm: &mut StreamManager, enc_reg: &RegisteredEncoders) -> bool {
 346         let out_id = out_sm.get_num_streams() as u32;
 347         if let Some(str_idx) = self.istr_opts.iter().position(|str| str.id == (istr.get_num() as u32)) {
 348             if self.istr_opts[str_idx].drop {
 349                 self.encoders.push(OutputMode::Drop);
 350                 return true;
 351             }
 352         }
 353
 354         if let Some(str_idx) = self.ostr_opts.iter().position(|str| str.id == out_id) {
 355             let oopts = &mut self.ostr_opts[str_idx];
 356             if oopts.enc_name.as_str() == "copy" && (cname == "any" || istr.get_info().get_name() == cname) {
 357                 out_sm.add_stream_ref(istr.clone());
 358                 self.encoders.push(OutputMode::Copy(out_id));
 359             } else if cname == "any" || oopts.enc_name.as_str() == cname {
 360                 let enc_create = enc_reg.find_encoder(oopts.enc_name.as_str());
 361                 if enc_create.is_none() {
 362                     println!("encoder '{}' not found", oopts.enc_name.as_str());
 363                     return false;
 364                 }
 365                 let mut encoder = (enc_create.unwrap())();
 366                 if oopts.enc_params.format == NACodecTypeInfo::None {
 367                     oopts.enc_params.format = istr.get_info().get_properties();
 368                 }
 369                 if oopts.enc_params.tb_num == 0 {
 370                     oopts.enc_params.tb_num = istr.tb_num;
 371                     oopts.enc_params.tb_den = istr.tb_den;
 372                 }
 373                 let ret_eparams = encoder.negotiate_format(&oopts.enc_params);
 374                 if ret_eparams.is_err() {
 375                     println!("cannot negotiate encoding parameters");
 376                     return false;
 377                 }
 378                 let ret_eparams = ret_eparams.unwrap();
 379
 380 //todo check for params mismatch
 381                 let cvt = match (&oopts.enc_params.format, &ret_eparams.format) {
 382                         (NACodecTypeInfo::Video(svinfo), NACodecTypeInfo::Video(dvinfo)) => {
 383                             if svinfo == dvinfo {
 384                                 OutputConvert::None
 385                             } else {
 386                                 let ofmt = ScaleInfo { fmt: dvinfo.format, width: dvinfo.width, height: dvinfo.height };
 387                                 let ret = NAScale::new(ofmt, ofmt);
 388                                 if ret.is_err() {
 389                                     println!("cannot create scaler");
 390                                     return false;
 391                                 }
 392                                 let scaler = ret.unwrap();
 393                                 let ret = alloc_video_buffer(*dvinfo, 4);
 394                                 if ret.is_err() {
 395                                     println!("cannot create scaler buffer");
 396                                     return false;
 397                                 }
 398                                 let cvt_buf = ret.unwrap();
 399                                 OutputConvert::Video(scaler, cvt_buf)
 400                             }
 401                         },
 402                         (NACodecTypeInfo::Audio(sainfo), NACodecTypeInfo::Audio(dainfo)) => {
 403                             if sainfo == dainfo {
 404                                 OutputConvert::None
 405                             } else {
 406                                 let dchmap = match dainfo.channels {
 407                                         1 => NAChannelMap::from_ms_mapping(0x4),
 408                                         2 => NAChannelMap::from_ms_mapping(0x3),
 409                                         _ => {
 410 println!("can't generate default channel map for {} channels", dainfo.channels);
 411                                             return false;
 412                                         },
 413                                     };
 414 //todo channelmap
 415                                 OutputConvert::Audio(*dainfo, dchmap)
 416                             }
 417                         },
 418                         _ => OutputConvert::None,
 419                     };
 420                 let ret = encoder.init(out_id, ret_eparams);
 421                 if ret.is_err() {
 422                     println!("error initialising encoder");
 423                     return false;
 424                 }
 425                 out_sm.add_stream_ref(ret.unwrap());
 426
 427                 let name = format!("output stream {}", out_id);
 428                 parse_and_apply_options!(encoder, &oopts.enc_opts, name);
 429
 430                 self.encoders.push(OutputMode::Encode(out_id, encoder, cvt));
 431             } else {
 432 println!("encoder {} is not supported by output (expected {})", istr.id, istr.get_info().get_name());
 433                 return false;
 434             }
 435         } else {
 436             if cname == "any" || istr.get_info().get_name() == cname {
 437                 out_sm.add_stream_ref(istr.clone());
 438                 self.encoders.push(OutputMode::Copy(out_id));
 439             } else {
 440 println!("stream {} ({}) can't be handled", istr.id, istr.get_info().get_name());
 441 // todo autoselect encoder?
 442                 return false;
 443             }
 444         }
 445         true
 446     }
 447     fn map_single(&mut self, cname: &str, ctype: StreamType, src_sm: &StreamManager, out_sm: &mut StreamManager, enc_reg: &RegisteredEncoders) -> bool {
 448         let mut found_stream = false;
 449         for istr in src_sm.iter() {
 450             if istr.get_media_type() != ctype || found_stream {
 451                 self.encoders.push(OutputMode::Drop);
 452             } else {
 453                 if !self.register_output_stream(cname, istr, out_sm, enc_reg) {
 454                     return false;
 455                 }
 456                 found_stream = true;
 457             }
 458         }
 459         found_stream
 460     }
 461     fn negotiate_stream_map(&mut self, src_sm: &StreamManager, mux_caps: MuxerCapabilities, out_sm: &mut StreamManager, enc_reg: &RegisteredEncoders) -> bool {
 462         match mux_caps {
 463             MuxerCapabilities::SingleVideo(cname) => {
 464                 if self.no_video { return false; }
 465                 self.map_single(cname, StreamType::Video, src_sm, out_sm, enc_reg)
 466             },
 467             MuxerCapabilities::SingleAudio(cname) => {
 468                 if self.no_audio { return false; }
 469                 self.map_single(cname, StreamType::Audio, src_sm, out_sm, enc_reg)
 470             },
 471             MuxerCapabilities::SingleVideoAndAudio(vname, aname) => {
 472                 let mut found_vid = false;
 473                 let mut found_aud = false;
 474                 for istr in src_sm.iter() {
 475                     if istr.get_media_type() == StreamType::Video && !found_vid && !self.no_video {
 476                         if !self.register_output_stream(vname, istr, out_sm, enc_reg) {
 477                             return false;
 478                         }
 479                         found_vid = true;
 480                     } else if istr.get_media_type() == StreamType::Audio && !found_aud && !self.no_audio {
 481                         if !self.register_output_stream(aname, istr, out_sm, enc_reg) {
 482                             return false;
 483                         }
 484                         found_aud = true;
 485                     } else {
 486                         self.encoders.push(OutputMode::Drop);
 487                     }
 488                 }
 489                 found_vid | found_aud
 490             },
 491             MuxerCapabilities::OnlyVideo => {
 492                 if self.no_video { return false; }
 493
 494                 let mut found_vid = false;
 495                 for istr in src_sm.iter() {
 496                     if istr.get_media_type() == StreamType::Video && !found_vid {
 497                         if !self.register_output_stream("any", istr, out_sm, enc_reg) {
 498                             return false;
 499                         }
 500                         found_vid = true;
 501                     } else {
 502                         self.encoders.push(OutputMode::Drop);
 503                     }
 504                 }
 505                 found_vid
 506             },
 507             MuxerCapabilities::OnlyAudio => {
 508                 if self.no_audio { return false; }
 509
 510                 let mut found_aud = false;
 511                 for istr in src_sm.iter() {
 512                     if istr.get_media_type() == StreamType::Audio && !found_aud {
 513                         if !self.register_output_stream("any", istr, out_sm, enc_reg) {
 514                             return false;
 515                         }
 516                         found_aud = true;
 517                     } else {
 518                         self.encoders.push(OutputMode::Drop);
 519                     }
 520                 }
 521                 found_aud
 522             },
 523             MuxerCapabilities::Universal => {
 524                 for istr in src_sm.iter() {
 525                     if (istr.get_media_type() == StreamType::Video && self.no_video) ||
 526                         (istr.get_media_type() == StreamType::Audio && self.no_audio) {
 527                         self.encoders.push(OutputMode::Drop);
 528                         continue;
 529                     }
 530                     if !self.register_output_stream("any", istr, out_sm, enc_reg) {
 531                         return false;
 532                     }
 533                 }
 534                 true
 535             },
 536         }
 537     }
 538 }
 539
 540 macro_rules! next_arg {
 541     ($args: expr, $arg_idx: expr) => {
 542         if $arg_idx + 1 >= $args.len() {
 543             println!("codec name is required");
 544         }
 545         $arg_idx += 1;
 546     }
 547 }
 548
 549 fn main() {
 550     let args: Vec<_> = env::args().collect();
 551
 552     if args.len() == 1 {
 553         println!("usage: nihav-encoder [-noout] [-vn] [-an] input [lastpts]");
 554         return;
 555     }
 556
 557     let mut dmx_reg = RegisteredDemuxers::new();
 558     nihav_register_all_demuxers(&mut dmx_reg);
 559     let mut dec_reg = RegisteredDecoders::new();
 560     nihav_register_all_codecs(&mut dec_reg);
 561
 562     let mut mux_reg = RegisteredMuxers::new();
 563     nihav_register_all_muxers(&mut mux_reg);
 564     mux_reg.add_muxer(NULL_MUXER);
 565     let mut enc_reg = RegisteredEncoders::new();
 566     nihav_register_all_encoders(&mut enc_reg);
 567     enc_reg.add_encoder(NULL_ENCODER);
 568
 569     let mut transcoder = Transcoder::new();
 570
 571     let mut arg_idx = 1;
 572     while arg_idx < args.len() {
 573         match args[arg_idx].as_str() {
 574             "--query-decoder-options" => {
 575                 next_arg!(args, arg_idx);
 576                 let cname = args[arg_idx].as_str();
 577                 if let Some(decfunc) = dec_reg.find_decoder(cname) {
 578                     let dec = (decfunc)();
 579                     let opts = dec.get_supported_options();
 580                     print_options(cname, opts);
 581                 } else {
 582                     println!("codec {} is not found", cname);
 583                 }
 584             },
 585             "--query-demuxer-options" => {
 586                 next_arg!(args, arg_idx);
 587                 let dname = args[arg_idx].as_str();
 588                 let mut mr = MemoryReader::new_read(&[]);
 589                 let mut br = ByteReader::new(&mut mr);
 590                 if let Some(dmx_creator) = dmx_reg.find_demuxer(dname) {
 591                     let dmx = dmx_creator.new_demuxer(&mut br);
 592                     let opts = dmx.get_supported_options();
 593                     print_options(dname, opts);
 594                 } else {
 595                     println!("demuxer {} is not found", dname);
 596                 }
 597             },
 598             "--query-encoder-options" => {
 599                 next_arg!(args, arg_idx);
 600                 let cname = args[arg_idx].as_str();
 601                 if let Some(encfunc) = enc_reg.find_encoder(cname) {
 602                     let enc = (encfunc)();
 603                     let opts = enc.get_supported_options();
 604                     print_options(cname, opts);
 605                 } else {
 606                     println!("codec {} is not found", cname);
 607                 }
 608             },
 609             "--query-muxer-options" => {
 610                 next_arg!(args, arg_idx);
 611                 let name = args[arg_idx].as_str();
 612                 let mut data = [];
 613                 let mut mw = MemoryWriter::new_write(&mut data);
 614                 let mut bw = ByteWriter::new(&mut mw);
 615                 if let Some(mux_creator) = mux_reg.find_muxer(name) {
 616                     let mux = mux_creator.new_muxer(&mut bw);
 617                     let opts = mux.get_supported_options();
 618                     print_options(name, opts);
 619                 } else {
 620                     println!("muxer {} is not found", name);
 621                 }
 622             },
 623             "--input" => {
 624                 next_arg!(args, arg_idx);
 625                 transcoder.input_name = args[arg_idx].clone();
 626             },
 627             "--input-format" => {
 628                 next_arg!(args, arg_idx);
 629                 transcoder.input_fmt = Some(args[arg_idx].clone());
 630             },
 631             "--output" => {
 632                 next_arg!(args, arg_idx);
 633                 transcoder.output_name = args[arg_idx].clone();
 634             },
 635             "--output-format" => {
 636                 next_arg!(args, arg_idx);
 637                 transcoder.output_fmt = Some(args[arg_idx].clone());
 638             },
 639             "--demuxer-options" => {
 640                 next_arg!(args, arg_idx);
 641                 if !transcoder.parse_demuxer_options(&args[arg_idx], &dmx_reg) {
 642                     println!("invalid demuxer option syntax");
 643                     return;
 644                 }
 645             },
 646             "--no-video" => {
 647                 transcoder.no_video = true;
 648             },
 649             "--no-audio" => {
 650                 transcoder.no_audio = true;
 651             },
 652             "--muxer-options" => {
 653                 next_arg!(args, arg_idx);
 654                 if !transcoder.parse_muxer_options(&args[arg_idx], &mux_reg) {
 655                     println!("invalid muxer option syntax");
 656                     return;
 657                 }
 658             },
 659             _ => {
 660                 if args[arg_idx].starts_with("--istream") {
 661                     let opt0 = &args[arg_idx];
 662                     next_arg!(args, arg_idx);
 663                     if !transcoder.parse_istream_options(opt0, &args[arg_idx]) {
 664                         println!("invalid input stream option syntax");
 665                         return;
 666                     }
 667                 } else if args[arg_idx].starts_with("--ostream") {
 668                     let opt0 = &args[arg_idx];
 669                     next_arg!(args, arg_idx);
 670                     if !transcoder.parse_ostream_options(opt0, &args[arg_idx], &enc_reg) {
 671                         println!("invalid output stream option syntax");
 672                         return;
 673                     }
 674                 } else if args[arg_idx].starts_with("--") {
 675                     println!("unknown option");
 676                 } else {
 677                     println!("unrecognized argument");
 678                 }
 679             },
 680         };
 681         arg_idx += 1;
 682     }
 683
 684     if transcoder.input_name.len() == 0 {
 685         println!("no input name provided");
 686         return;
 687     }
 688     if transcoder.output_name.len() == 0 {
 689         println!("no output name provided");
 690         return;
 691     }
 692
 693     let res = File::open(transcoder.input_name.as_str());
 694     if res.is_err() {
 695         println!("error opening input");
 696         return;
 697     }
 698     let mut file = res.unwrap();
 699     let mut fr = FileReader::new_read(&mut file);
 700     let mut br = ByteReader::new(&mut fr);
 701
 702     let dmx_name = if let Some(ref str) = transcoder.input_fmt {
 703             str.as_str()
 704         } else {
 705             if let Some((dmx_name, score)) = detect::detect_format(transcoder.input_name.as_str(), &mut br) {
 706                 println!("detected {} with score {:?}", dmx_name, score);
 707                 dmx_name
 708             } else {
 709                 println!("cannot detect input format");
 710                 return;
 711             }
 712         };
 713     let ret = dmx_reg.find_demuxer(dmx_name);
 714     if ret.is_none() {
 715         println!("cannot find demuxer for '{}'", dmx_name);
 716         return;
 717     }
 718     let dmx_fact = ret.unwrap();
 719     br.seek(SeekFrom::Start(0)).unwrap();
 720     let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
 721     parse_and_apply_options!(dmx, &transcoder.demux_opts, "input");
 722     for i in 0..dmx.get_num_streams() {
 723         let s = dmx.get_stream(i).unwrap();
 724         let info = s.get_info();
 725         let decfunc = dec_reg.find_decoder(info.get_name());
 726 println!("stream {} - {} {}", i, s, info.get_name());
 727         let str_id = s.get_num() as u32;
 728         if let Some(create_dec) = decfunc {
 729             let mut dec = (create_dec)();
 730             let mut dsupp = Box::new(NADecoderSupport::new());
 731             let ret = dec.init(&mut dsupp, info.clone());
 732             if ret.is_err() {
 733                 println!("Error initialising decoder '{}' for stream {}", info.get_name(), str_id);
 734                 return;
 735             }
 736             transcoder.apply_decoder_options(dec.as_mut(), str_id);
 737             transcoder.decoders.push(Some((dsupp, dec)));
 738         } else {
 739             println!("No decoder for stream {} ({}) is found", str_id, info.get_name());
 740             transcoder.decoders.push(None);
 741         }
 742     }
 743
 744     let output_fmt = if let Some(ref str) = transcoder.output_fmt {
 745             str
 746         } else {
 747             if let Some(str) = detect::detect_format_by_name(transcoder.output_name.as_str()) {
 748                 str
 749             } else {
 750                 println!("Cannot guess muxer for output");
 751                 return;
 752             }
 753         };
 754     let ret = mux_reg.find_muxer(output_fmt);
 755     let ofmt = output_fmt.to_string();
 756
 757     if ret.is_none() {
 758         println!("cannot find muxer '{}'", output_fmt);
 759     }
 760     let mux_creator = ret.unwrap();
 761
 762     let mux_caps = mux_creator.get_capabilities();
 763     let mut out_sm = StreamManager::new();
 764     if !transcoder.negotiate_stream_map(dmx.get_stream_manager(), mux_caps, &mut out_sm, &enc_reg) {
 765         println!("cannot determine stream map");
 766         return;
 767     }
 768
 769     let ret = File::create(transcoder.output_name.as_str());
 770     if ret.is_err() {
 771         println!("cannot open output file");
 772         return;
 773     }
 774     let mut fw = FileWriter::new_write(ret.unwrap());
 775     let mut bw = ByteWriter::new(&mut fw);
 776     let ret = create_muxer(mux_creator, out_sm, &mut bw);
 777     if let Err(err) = ret {
 778         println!("cannot create muxer instance {:?}", err);
 779         return;
 780     }
 781     let mut mux = ret.unwrap();
 782     parse_and_apply_options!(mux, &transcoder.mux_opts, "output");
 783
 784     println!("Output {} muxer {}", transcoder.output_name, ofmt);
 785     for ostr in mux.get_streams() {
 786         println!(" #{}: {} {}", ostr.get_num(), ostr, ostr.get_info().get_name());
 787     }
 788
 789     loop {
 790         let pktres = dmx.get_frame();
 791         if let Err(DemuxerError::EOF) = pktres { break; }
 792         if pktres.is_err() {
 793             println!("demuxing error");
 794             break;
 795         }
 796         let mut pkt = pktres.unwrap();
 797         let src_id = pkt.get_stream().get_num();
 798         match transcoder.encoders[src_id] {
 799             OutputMode::Drop => {},
 800             OutputMode::Copy(dst_id) => {
 801                 let dstr = mux.get_stream(dst_id as usize).unwrap();
 802                 pkt.reassign(dstr, pkt.get_time_information());
 803                 if mux.mux_frame(pkt).is_err() {
 804                     println!("error muxing packet");
 805                     break;
 806                 }
 807             },
 808             OutputMode::Encode(dst_id, ref mut encoder, ref mut cvt) => {
 809                 if let Some((ref mut dsupp, ref mut decoder)) = transcoder.decoders[src_id] {
 810                     let ret = decoder.decode(dsupp, &pkt);
 811                     if ret.is_err() {
 812                         println!("error decoding stream {}", src_id);
 813                         break;
 814                     }
 815                     let frm = ret.unwrap();
 816                     let buf = frm.get_buffer();
 817                     let cbuf = match cvt {
 818                             OutputConvert::None => buf,
 819                             OutputConvert::Video(ref mut scaler, ref mut dbuf) => {
 820                                 let cur_ifmt = get_scale_fmt_from_pic(&buf);
 821                                 let last_ifmt = scaler.get_in_fmt();
 822                                 if cur_ifmt != last_ifmt {
 823                                     let ofmt = scaler.get_out_fmt();
 824                                     let ret = NAScale::new(cur_ifmt, ofmt);
 825                                     if ret.is_err() {
 826                                         println!("error re-initialising scaler for {} -> {}", cur_ifmt, ofmt);
 827                                         break;
 828                                     }
 829                                     *scaler = ret.unwrap();
 830                                 }
 831                                 let ret = scaler.convert(&buf, dbuf);
 832                                 if ret.is_err() {
 833                                     println!("error converting frame for encoding");
 834                                     break;
 835                                 }
 836                                 dbuf.clone()
 837                             },
 838                             OutputConvert::Audio(ref dinfo, ref dchmap) => {
 839                                 let ret = convert_audio_frame(&buf, dinfo, dchmap);
 840                                 if ret.is_err() {
 841                                     println!("error converting audio for stream {}", dst_id);
 842                                     break;
 843                                 }
 844                                 ret.unwrap()
 845                             },
 846                         };
 847                     let cfrm = NAFrame::new(frm.get_time_information(), frm.frame_type, frm.key, frm.get_info(), cbuf);
 848                     encoder.encode(&cfrm).unwrap();
 849                     while let Ok(Some(pkt)) = encoder.get_packet() {
 850                         mux.mux_frame(pkt).unwrap();
 851                     }
 852                 } else {
 853                     println!("no decoder for stream {}", src_id);
 854                     break;
 855                 }
 856             },
 857         };
 858     }
 859     'flush_loop: for enc in transcoder.encoders.iter_mut() {
 860         match enc {
 861             OutputMode::Encode(str_id, ref mut encoder, _) => {
 862                 let ret = encoder.flush();
 863                 if ret.is_err() {
 864                     println!("error flushing encoder for stream {}", str_id);
 865                     break;
 866                 } else {
 867                     while let Ok(Some(pkt)) = encoder.get_packet() {
 868                         if mux.mux_frame(pkt).is_err() {
 869                             println!("error muxing packet");
 870                             break 'flush_loop;
 871                         }
 872                     }
 873                 }
 874             },
 875             _ => {},
 876         };
 877     }
 878
 879     let ret = mux.end();
 880     if ret.is_err() {
 881         println!("error at finalising muxing");
 882     }
 883 }