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 mut packetiser = (pcreate)();
 114                             packetiser.attach_stream(stream);
 115                             pkts.push(Some(packetiser));
 116                         } else {
 117                             pkts.push(None);
 118                         }
 119                     }
 120                     return DemuxerObject::Raw(dmx, pkts, false);
 121                 }
 122             }
 123             for rdmx in reg.rdmx_reg.iter() {
 124                 if rdmx.check_format(br) {
 125                     if print_info {
 126                         println!("detected {} as {}", name, rdmx.get_name());
 127                     }
 128                     br.seek(SeekFrom::Start(0)).unwrap();
 129                     let dmx = SelfBorrow::new(brb, |br_| {
 130                             unsafe {
 131                                 create_raw_demuxer(*rdmx, br_.as_mut().unwrap().get_object_mut()).unwrap()
 132                             }
 133                         });
 134                     let mut pkts = Vec::new();
 135                     for stream in dmx.get_object().get_streams() {
 136                         if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
 137                             let packetiser = (pcreate)();
 138                             pkts.push(Some(packetiser));
 139                         } else {
 140                             pkts.push(None);
 141                         }
 142                     }
 143                     return DemuxerObject::Raw(dmx, pkts, false);
 144                 }
 145             }
 146         }
 147         br.seek(SeekFrom::Start(0)).unwrap();
 148         let mut buf = vec![0; 1048576];
 149         let size = br.peek_buf(&mut buf).unwrap();
 150         let mut pname = "";
 151
 152         for pinfo in reg.pkt_reg.iter() {
 153             let mut packetiser = (pinfo.get_packetiser)();
 154             packetiser.add_data(&buf[..size]);
 155             if packetiser.parse_stream(0).is_ok() {
 156                 pname = pinfo.name;
 157                 break;
 158             }
 159         }
 160         if !pname.is_empty() {
 161             if print_info {
 162                 println!("found raw stream of type {} for {}", pname, name);
 163             }
 164             let pcreate = reg.pkt_reg.find_packetiser(pname).unwrap();
 165             let rctx = SelfBorrow::new(brb, |br_| {
 166                     unsafe {
 167                         let mut packetiser = (pcreate)();
 168                         packetiser.add_data(&buf[..size]);
 169                         let stream = packetiser.parse_stream(0).unwrap();
 170                         packetiser.reset();
 171                         RawStreamCtx::new(stream, packetiser, br_.as_mut().unwrap().get_object_mut())
 172                     }
 173                 });
 174             DemuxerObject::RawStream(rctx)
 175         } else {
 176             DemuxerObject::None
 177         }
 178     }
 179     pub fn create_imgseq(isd: ImgSeqDemuxer) -> Self {
 180         DemuxerObject::ImageSequence(isd)
 181     }
 182     pub fn is_none(&self) -> bool {
 183         matches!(*self, DemuxerObject::None)
 184     }
 185     pub fn get_duration(&self) -> u64 {
 186         match *self {
 187             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_duration(),
 188             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_duration(),
 189             DemuxerObject::RawStream(ref ctx) => {
 190                 NATimeInfo::ts_to_time(ctx.get_object().stream.duration, 1000, ctx.get_object().stream.tb_num, ctx.get_object().stream.tb_den)
 191             },
 192             _ => 0,
 193         }
 194     }
 195     pub fn get_num_streams(&self) -> usize {
 196         match *self {
 197             DemuxerObject::None => 0,
 198             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_num_streams(),
 199             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_num_streams(),
 200             DemuxerObject::RawStream(_) => 1,
 201             DemuxerObject::ImageSequence(_) => 1,
 202         }
 203     }
 204     pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
 205         match *self {
 206             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_stream(idx),
 207             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_stream(idx),
 208             DemuxerObject::RawStream(ref ctx) if idx == 0 => Some(ctx.get_object().stream.clone()),
 209             DemuxerObject::ImageSequence(ref ctx) if idx == 0 => Some(ctx.stream.clone()),
 210             _ => None,
 211         }
 212     }
 213     /*pub fn get_streams(&self) -> StreamIter {
 214         match *self {
 215             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_streams(),
 216             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_streams(),
 217             DemuxerObject::RawStream(ref ctx) => ctx.get_object().sm.iter(),
 218             DemuxerObject::ImageSequence(ref ctx) => ctx.sm.iter(),
 219             _ => unreachable!(),
 220         }
 221     }*/
 222     pub fn get_stream_manager(&self) -> &StreamManager {
 223         match *self {
 224             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_stream_manager(),
 225             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_stream_manager(),
 226             DemuxerObject::RawStream(ref ctx) => &ctx.get_object().sm,
 227             DemuxerObject::ImageSequence(ref ctx) => &ctx.sm,
 228             _ => unreachable!(),
 229         }
 230     }
 231     pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
 232         match *self {
 233             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().get_frame(),
 234             DemuxerObject::Raw(ref mut dmx, ref mut packetisers, ref mut eof) => {
 235                 let dmx = dmx.get_object_mut();
 236                 loop {
 237                     let mut has_some = false;
 238                     for (stream, p) in dmx.get_streams().zip(packetisers.iter_mut()) {
 239                         if let Some(ref mut pkts) = p {
 240                             match pkts.get_packet(stream.clone()) {
 241                                 Ok(Some(pkt)) => return Ok(pkt),
 242                                 Ok(None) | Err(DecoderError::ShortData) => {
 243                                     if *eof {
 244                                         *p = None;
 245                                     }
 246                                 },
 247                                 Err(err) => {
 248                                     println!("packetisation error {:?}", err);
 249                                     return Err(DemuxerError::InvalidData);
 250                                 }
 251                             };
 252                             has_some |= p.is_some();
 253                         }
 254                     }
 255                     if !has_some {
 256                         return Err(DemuxerError::EOF);
 257                     }
 258                     if let Ok(data) = dmx.get_data() {
 259                         let id = data.get_stream().get_id();
 260                         for (i, stream) in dmx.get_streams().enumerate() {
 261                             if stream.get_id() == id {
 262                                 if let Some(ref mut pkts) = packetisers[i] {
 263                                     pkts.add_data(&data.get_buffer());
 264                                 }
 265                                 break;
 266                             }
 267                         }
 268                     } else {
 269                         *eof = true;
 270                     }
 271                 }
 272             },
 273             DemuxerObject::RawStream(ref mut ctx) => {
 274                 let ctx = ctx.get_object_mut();
 275                 let mut buf = [0; 65536];
 276                 loop {
 277                     match ctx.packetiser.get_packet(ctx.stream.clone()) {
 278                         Ok(Some(mut packet)) => {
 279                             if packet.get_pts().is_none() && packet.get_duration().is_some() {
 280                                 packet.ts.pts = Some(ctx.pts);
 281                             }
 282                             ctx.pts += packet.get_duration().unwrap_or(0);
 283                             return Ok(packet);
 284                         },
 285                         Ok(None) => {},
 286                         Err(DecoderError::ShortData) => {},
 287                         _ => return Err(DemuxerError::InvalidData),
 288                     };
 289                     match ctx.br.read_buf_some(&mut buf) {
 290                         Ok(size) => {
 291                             ctx.packetiser.add_data(&buf[..size]);
 292                         },
 293                         Err(_) => {
 294                             match ctx.packetiser.get_packet(ctx.stream.clone()) {
 295                                 Ok(Some(mut packet)) => {
 296                                     if packet.get_pts().is_none() && packet.get_duration().is_some() {
 297                                         packet.ts.pts = Some(ctx.pts);
 298                                     }
 299                                     ctx.pts += packet.get_duration().unwrap_or(0);
 300                                     return Ok(packet);
 301                                 },
 302                                 Ok(None) | Err(DecoderError::ShortData) => return Err(DemuxerError::EOF),
 303                                 _ => return Err(DemuxerError::InvalidData),
 304                             };
 305                         },
 306                     };
 307                 }
 308             },
 309             DemuxerObject::ImageSequence(ref mut ctx) => ctx.get_frame(),
 310             _ => unreachable!(),
 311         }
 312     }
 313     pub fn seek(&mut self, seek_time: NATimePoint) -> DemuxerResult<()> {
 314         match *self {
 315             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().seek(seek_time),
 316             DemuxerObject::Raw(ref mut dmx, _, _) => dmx.get_object_mut().seek(seek_time),
 317             DemuxerObject::ImageSequence(ref mut ctx) => ctx.seek(seek_time),
 318             _ => Err(DemuxerError::NotImplemented),
 319         }
 320     }
 321 }
 322
 323 impl<'a> NAOptionHandler for DemuxerObject<'a> {
 324     fn get_supported_options(&self) -> &[NAOptionDefinition] {
 325         match *self {
 326             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_supported_options(),
 327             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_supported_options(),
 328             DemuxerObject::ImageSequence(ref ctx) => ctx.get_supported_options(),
 329             _ => &[],
 330         }
 331     }
 332     fn set_options(&mut self, options: &[NAOption]) {
 333         match *self {
 334             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().set_options(options),
 335             DemuxerObject::Raw(ref mut dmx, _, _) => dmx.get_object_mut().set_options(options),
 336             DemuxerObject::ImageSequence(ref mut ctx) => ctx.set_options(options),
 337             _ => {},
 338         }
 339     }
 340     fn query_option_value(&self, name: &str) -> Option<NAValue> {
 341         match *self {
 342             DemuxerObject::Normal(ref dmx) => dmx.get_object().query_option_value(name),
 343             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().query_option_value(name),
 344             DemuxerObject::ImageSequence(ref ctx) => ctx.query_option_value(name),
 345             _ => None,
 346         }
 347     }
 348 }
 349
 350 pub fn detect_tags(br: &mut ByteReader) -> (bool, u64, Option<u64>) {
 351     let mut is_raw = false;
 352     let mut start = 0;
 353     let mut end = None;
 354
 355     // check for ID3v{2-4}
 356     let mut buf = [0; 5];
 357     br.peek_buf(&mut buf).unwrap();
 358     if &buf[0..3] == b"ID3" && buf[3] > 0 && buf[3] < 5 && buf[4] == 0 { //ID3 tag found, must be a raw stream
 359         br.read_skip(6).unwrap();
 360         let mut size = 0;
 361         for _ in 0..4 {
 362             let b = br.read_byte().unwrap();
 363             if (b & 0x80) != 0 {
 364                 println!("Invalid ID3 size");
 365                 break;
 366             }
 367             size = (size << 7) | u64::from(b);
 368         }
 369         start = size + 10;
 370         is_raw = true;
 371     }
 372     // check for ID3v1
 373     br.seek(SeekFrom::End(-128)).unwrap();
 374     let off = br.tell();
 375     br.peek_buf(&mut buf[..3]).unwrap();
 376     if &buf[0..3] == b"TAG" {
 377         end = Some(off);
 378     }
 379     // check for APETAG
 380     let mut buf = [0; 8];
 381     if let Some(off) = end {
 382         br.seek(SeekFrom::Start(off - 32)).unwrap();
 383     } else {
 384         br.seek(SeekFrom::End(-32)).unwrap();
 385     }
 386     let off = br.tell();
 387     br.read_buf(&mut buf).unwrap();
 388     if &buf == b"APETAGEX" {
 389         let ver     = br.read_u32le().unwrap();
 390         let size    = u64::from(br.read_u32le().unwrap());
 391         let _items  = br.read_u32le().unwrap();
 392         let flags   = br.read_u32le().unwrap();
 393         if ver == 1000 || (flags & 0x80000000) == 0 {
 394             end = Some(off - size + 32);
 395         } else {
 396             end = Some(off - size);
 397         }
 398     }
 399
 400     (is_raw, start, end)
 401 }