src/demux.rs

   1 use std::io::SeekFrom;
   2 use nihav_core::codecs::*;
   3 use nihav_core::demuxers::*;
   4 use nihav_core::muxers::*;
   5 use nihav_registry::detect;
   6 use nihav_core::io::byteio::ByteReader;
   7 use nihav_allstuff::*;
   8 use crate::null::*;
   9 use crate::imgseq::*;
  10 use crate::{SBBox, SelfBorrow};
  11
  12 pub struct FullRegister {
  13     pub dmx_reg:    RegisteredDemuxers,
  14     pub rdmx_reg:   RegisteredRawDemuxers,
  15     pub pkt_reg:    RegisteredPacketisers,
  16     pub dec_reg:    RegisteredDecoders,
  17     pub enc_reg:    RegisteredEncoders,
  18     pub mux_reg:    RegisteredMuxers,
  19 }
  20
  21 impl FullRegister {
  22     pub fn new() -> Self {
  23         let mut dmx_reg = RegisteredDemuxers::new();
  24         nihav_register_all_demuxers(&mut dmx_reg);
  25         let mut rdmx_reg = RegisteredRawDemuxers::new();
  26         nihav_register_all_raw_demuxers(&mut rdmx_reg);
  27         let mut dec_reg = RegisteredDecoders::new();
  28         nihav_register_all_decoders(&mut dec_reg);
  29         let mut pkt_reg = RegisteredPacketisers::new();
  30         nihav_register_all_packetisers(&mut pkt_reg);
  31         let mut enc_reg = RegisteredEncoders::new();
  32         nihav_register_all_encoders(&mut enc_reg);
  33         enc_reg.add_encoder(NULL_ENCODER);
  34         let mut mux_reg = RegisteredMuxers::new();
  35         nihav_register_all_muxers(&mut mux_reg);
  36         mux_reg.add_muxer(NULL_MUXER);
  37         Self { dmx_reg, rdmx_reg, pkt_reg, dec_reg, enc_reg, mux_reg }
  38     }
  39 }
  40
  41 pub struct RawStreamCtx<'a> {
  42     stream:     NAStreamRef,
  43     sm:         StreamManager,
  44     packetiser: Box<dyn NAPacketiser + Send>,
  45     br:         &'a mut ByteReader<'a>,
  46     pts:        u64,
  47 }
  48
  49 impl<'a> RawStreamCtx<'a> {
  50     fn new(stream: NAStreamRef, packetiser: Box<dyn NAPacketiser + Send>, br: &'a mut ByteReader<'a>) -> Self {
  51         let mut sm = StreamManager::new();
  52         sm.add_stream_ref(stream.clone());
  53         Self { stream, sm, packetiser, br, pts: 0 }
  54     }
  55 }
  56
  57 type ReaderBox<'a> = SBBox<Box<dyn ByteIO>, ByteReader<'a>>;
  58
  59 pub enum DemuxerObject<'a> {
  60     None,
  61     Normal(SBBox<ReaderBox<'a>, Demuxer<'a>>),
  62     Raw(SBBox<ReaderBox<'a>, RawDemuxer<'a>>, Vec<Option<Box<dyn NAPacketiser + Send>>>, bool),
  63     RawStream(SBBox<ReaderBox<'a>, RawStreamCtx<'a>>),
  64     ImageSequence(ImgSeqDemuxer),
  65 }
  66
  67 impl<'a> DemuxerObject<'a> {
  68     pub fn create(mut brb: ReaderBox<'a>, reg: &FullRegister, name: &str, ifmt: &Option<String>, is_raw: bool, print_info: bool) -> DemuxerObject<'a> {
  69         let br = brb.get_object_mut();
  70         if !is_raw {
  71             let dmx_name = if let Some(ref dname) = ifmt {
  72                     dname.as_str()
  73                 } else if let Some((dname, score)) = detect::detect_format(name, br) {
  74                     if print_info {
  75                         println!("detected {} with score {:?}", dname, score);
  76                     }
  77                     dname
  78                 } else {
  79                     ""
  80                 };
  81             if !dmx_name.is_empty() {
  82                 if print_info {
  83                     println!("trying demuxer {} on {}", dmx_name, name);
  84                 }
  85                 if let Some(dmx_fact) = reg.dmx_reg.find_demuxer(dmx_name) {
  86                     br.seek(SeekFrom::Start(0)).unwrap();
  87
  88                     let dmx = SelfBorrow::new(brb, |br_| {
  89                             unsafe {
  90                                 create_demuxer(dmx_fact, br_.as_mut().unwrap().get_object_mut()).unwrap()
  91                             }
  92                         });
  93                     return DemuxerObject::Normal(dmx);
  94                 }
  95             }
  96             if ifmt.is_some() {
  97                 return DemuxerObject::None;
  98             }
  99             if !dmx_name.is_empty() {
 100                 if print_info {
 101                     println!("trying raw demuxer {} on {}", dmx_name, name);
 102                 }
 103                 if let Some(rdmx_fact) = reg.rdmx_reg.find_demuxer(dmx_name) {
 104                     br.seek(SeekFrom::Start(0)).unwrap();
 105                     let dmx = SelfBorrow::new(brb, |br_| {
 106                             unsafe {
 107                                 create_raw_demuxer(rdmx_fact, br_.as_mut().unwrap().get_object_mut()).unwrap()
 108                             }
 109                         });
 110                     let mut pkts = Vec::new();
 111                     for stream in dmx.get_object().get_streams() {
 112                         if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
 113                             let packetiser = (pcreate)();
 114                             pkts.push(Some(packetiser));
 115                         } else {
 116                             pkts.push(None);
 117                         }
 118                     }
 119                     return DemuxerObject::Raw(dmx, pkts, false);
 120                 }
 121             }
 122             for rdmx in reg.rdmx_reg.iter() {
 123                 if rdmx.check_format(br) {
 124                     if print_info {
 125                         println!("detected {} as {}", name, rdmx.get_name());
 126                     }
 127                     br.seek(SeekFrom::Start(0)).unwrap();
 128                     let dmx = SelfBorrow::new(brb, |br_| {
 129                             unsafe {
 130                                 create_raw_demuxer(*rdmx, br_.as_mut().unwrap().get_object_mut()).unwrap()
 131                             }
 132                         });
 133                     let mut pkts = Vec::new();
 134                     for stream in dmx.get_object().get_streams() {
 135                         if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
 136                             let packetiser = (pcreate)();
 137                             pkts.push(Some(packetiser));
 138                         } else {
 139                             pkts.push(None);
 140                         }
 141                     }
 142                     return DemuxerObject::Raw(dmx, pkts, false);
 143                 }
 144             }
 145         }
 146         br.seek(SeekFrom::Start(0)).unwrap();
 147         let mut buf = vec![0; 1048576];
 148         let size = br.peek_buf(&mut buf).unwrap();
 149         let mut pname = "";
 150
 151         for pinfo in reg.pkt_reg.iter() {
 152             let mut packetiser = (pinfo.get_packetiser)();
 153             packetiser.add_data(&buf[..size]);
 154             if packetiser.parse_stream(0).is_ok() {
 155                 pname = pinfo.name;
 156                 break;
 157             }
 158         }
 159         if !pname.is_empty() {
 160             if print_info {
 161                 println!("found raw stream of type {} for {}", pname, name);
 162             }
 163             let pcreate = reg.pkt_reg.find_packetiser(pname).unwrap();
 164             let rctx = SelfBorrow::new(brb, |br_| {
 165                     unsafe {
 166                         let mut packetiser = (pcreate)();
 167                         packetiser.add_data(&buf[..size]);
 168                         let stream = packetiser.parse_stream(0).unwrap();
 169                         packetiser.reset();
 170                         RawStreamCtx::new(stream, packetiser, br_.as_mut().unwrap().get_object_mut())
 171                     }
 172                 });
 173             DemuxerObject::RawStream(rctx)
 174         } else {
 175             DemuxerObject::None
 176         }
 177     }
 178     pub fn create_imgseq(isd: ImgSeqDemuxer) -> Self {
 179         DemuxerObject::ImageSequence(isd)
 180     }
 181     pub fn is_none(&self) -> bool {
 182         matches!(*self, DemuxerObject::None)
 183     }
 184     pub fn get_duration(&self) -> u64 {
 185         match *self {
 186             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_duration(),
 187             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_duration(),
 188             DemuxerObject::RawStream(ref ctx) => {
 189                 NATimeInfo::ts_to_time(ctx.get_object().stream.duration, 1000, ctx.get_object().stream.tb_num, ctx.get_object().stream.tb_den)
 190             },
 191             _ => 0,
 192         }
 193     }
 194     pub fn get_num_streams(&self) -> usize {
 195         match *self {
 196             DemuxerObject::None => 0,
 197             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_num_streams(),
 198             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_num_streams(),
 199             DemuxerObject::RawStream(_) => 1,
 200             DemuxerObject::ImageSequence(_) => 1,
 201         }
 202     }
 203     pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
 204         match *self {
 205             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_stream(idx),
 206             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_stream(idx),
 207             DemuxerObject::RawStream(ref ctx) if idx == 0 => Some(ctx.get_object().stream.clone()),
 208             DemuxerObject::ImageSequence(ref ctx) if idx == 0 => Some(ctx.stream.clone()),
 209             _ => None,
 210         }
 211     }
 212     /*pub fn get_streams(&self) -> StreamIter {
 213         match *self {
 214             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_streams(),
 215             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_streams(),
 216             DemuxerObject::RawStream(ref ctx) => ctx.get_object().sm.iter(),
 217             DemuxerObject::ImageSequence(ref ctx) => ctx.sm.iter(),
 218             _ => unreachable!(),
 219         }
 220     }*/
 221     pub fn get_stream_manager(&self) -> &StreamManager {
 222         match *self {
 223             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_stream_manager(),
 224             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_stream_manager(),
 225             DemuxerObject::RawStream(ref ctx) => &ctx.get_object().sm,
 226             DemuxerObject::ImageSequence(ref ctx) => &ctx.sm,
 227             _ => unreachable!(),
 228         }
 229     }
 230     pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
 231         match *self {
 232             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().get_frame(),
 233             DemuxerObject::Raw(ref mut dmx, ref mut packetisers, ref mut eof) => {
 234                 let dmx = dmx.get_object_mut();
 235                 loop {
 236                     let mut has_some = false;
 237                     for (stream, p) in dmx.get_streams().zip(packetisers.iter_mut()) {
 238                         if let Some(ref mut pkts) = p {
 239                             match pkts.get_packet(stream.clone()) {
 240                                 Ok(Some(pkt)) => return Ok(pkt),
 241                                 Ok(None) | Err(DecoderError::ShortData) => {
 242                                     if *eof {
 243                                         *p = None;
 244                                     }
 245                                 },
 246                                 Err(err) => {
 247                                     println!("packetisation error {:?}", err);
 248                                     return Err(DemuxerError::InvalidData);
 249                                 }
 250                             };
 251                             has_some |= p.is_some();
 252                         }
 253                     }
 254                     if !has_some {
 255                         return Err(DemuxerError::EOF);
 256                     }
 257                     if let Ok(data) = dmx.get_data() {
 258                         let id = data.get_stream().get_id();
 259                         for (i, stream) in dmx.get_streams().enumerate() {
 260                             if stream.get_id() == id {
 261                                 if let Some(ref mut pkts) = packetisers[i] {
 262                                     pkts.add_data(&data.get_buffer());
 263                                 }
 264                                 break;
 265                             }
 266                         }
 267                     } else {
 268                         *eof = true;
 269                     }
 270                 }
 271             },
 272             DemuxerObject::RawStream(ref mut ctx) => {
 273                 let ctx = ctx.get_object_mut();
 274                 let mut buf = [0; 65536];
 275                 loop {
 276                     match ctx.packetiser.get_packet(ctx.stream.clone()) {
 277                         Ok(Some(mut packet)) => {
 278                             if packet.get_pts().is_none() && packet.get_duration().is_some() {
 279                                 packet.ts.pts = Some(ctx.pts);
 280                             }
 281                             ctx.pts += packet.get_duration().unwrap_or(0);
 282                             return Ok(packet);
 283                         },
 284                         Ok(None) => {},
 285                         Err(DecoderError::ShortData) => {},
 286                         _ => return Err(DemuxerError::InvalidData),
 287                     };
 288                     match ctx.br.read_buf_some(&mut buf) {
 289                         Ok(size) => {
 290                             ctx.packetiser.add_data(&buf[..size]);
 291                         },
 292                         Err(_) => {
 293                             match ctx.packetiser.get_packet(ctx.stream.clone()) {
 294                                 Ok(Some(mut packet)) => {
 295                                     if packet.get_pts().is_none() && packet.get_duration().is_some() {
 296                                         packet.ts.pts = Some(ctx.pts);
 297                                     }
 298                                     ctx.pts += packet.get_duration().unwrap_or(0);
 299                                     return Ok(packet);
 300                                 },
 301                                 Ok(None) | Err(DecoderError::ShortData) => return Err(DemuxerError::EOF),
 302                                 _ => return Err(DemuxerError::InvalidData),
 303                             };
 304                         },
 305                     };
 306                 }
 307             },
 308             DemuxerObject::ImageSequence(ref mut ctx) => ctx.get_frame(),
 309             _ => unreachable!(),
 310         }
 311     }
 312     pub fn seek(&mut self, seek_time: NATimePoint) -> DemuxerResult<()> {
 313         match *self {
 314             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().seek(seek_time),
 315             DemuxerObject::Raw(ref mut dmx, _, _) => dmx.get_object_mut().seek(seek_time),
 316             DemuxerObject::ImageSequence(ref mut ctx) => ctx.seek(seek_time),
 317             _ => Err(DemuxerError::NotImplemented),
 318         }
 319     }
 320 }
 321
 322 impl<'a> NAOptionHandler for DemuxerObject<'a> {
 323     fn get_supported_options(&self) -> &[NAOptionDefinition] {
 324         match *self {
 325             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_supported_options(),
 326             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_supported_options(),
 327             DemuxerObject::ImageSequence(ref ctx) => ctx.get_supported_options(),
 328             _ => &[],
 329         }
 330     }
 331     fn set_options(&mut self, options: &[NAOption]) {
 332         match *self {
 333             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().set_options(options),
 334             DemuxerObject::Raw(ref mut dmx, _, _) => dmx.get_object_mut().set_options(options),
 335             DemuxerObject::ImageSequence(ref mut ctx) => ctx.set_options(options),
 336             _ => {},
 337         }
 338     }
 339     fn query_option_value(&self, name: &str) -> Option<NAValue> {
 340         match *self {
 341             DemuxerObject::Normal(ref dmx) => dmx.get_object().query_option_value(name),
 342             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().query_option_value(name),
 343             DemuxerObject::ImageSequence(ref ctx) => ctx.query_option_value(name),
 344             _ => None,
 345         }
 346     }
 347 }
 348
 349 pub fn detect_tags(br: &mut ByteReader) -> (bool, u64, Option<u64>) {
 350     let mut is_raw = false;
 351     let mut start = 0;
 352     let mut end = None;
 353
 354     // check for ID3v{2-4}
 355     let mut buf = [0; 5];
 356     br.peek_buf(&mut buf).unwrap();
 357     if &buf[0..3] == b"ID3" && buf[3] > 0 && buf[3] < 5 && buf[4] == 0 { //ID3 tag found, must be a raw stream
 358         br.read_skip(6).unwrap();
 359         let mut size = 0;
 360         for _ in 0..4 {
 361             let b = br.read_byte().unwrap();
 362             if (b & 0x80) != 0 {
 363                 println!("Invalid ID3 size");
 364                 break;
 365             }
 366             size = (size << 7) | u64::from(b);
 367         }
 368         start = size + 10;
 369         is_raw = true;
 370     }
 371     // check for ID3v1
 372     br.seek(SeekFrom::End(-128)).unwrap();
 373     let off = br.tell();
 374     br.peek_buf(&mut buf[..3]).unwrap();
 375     if &buf[0..3] == b"TAG" {
 376         end = Some(off);
 377     }
 378     // check for APETAG
 379     let mut buf = [0; 8];
 380     if let Some(off) = end {
 381         br.seek(SeekFrom::Start(off - 32)).unwrap();
 382     } else {
 383         br.seek(SeekFrom::End(-32)).unwrap();
 384     }
 385     let off = br.tell();
 386     br.read_buf(&mut buf).unwrap();
 387     if &buf == b"APETAGEX" {
 388         let ver     = br.read_u32le().unwrap();
 389         let size    = u64::from(br.read_u32le().unwrap());
 390         let _items  = br.read_u32le().unwrap();
 391         let flags   = br.read_u32le().unwrap();
 392         if ver == 1000 || (flags & 0x80000000) == 0 {
 393             end = Some(off - size + 32);
 394         } else {
 395             end = Some(off - size);
 396         }
 397     }
 398
 399     (is_raw, start, end)
 400 }