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 ret = SelfBorrow::try_new(brb, |br_| {
  89                             unsafe {
  90                                 create_demuxer(dmx_fact, br_.as_mut().unwrap().get_object_mut()).ok()
  91                             }
  92                         });
  93                     if let Some(dmx) = ret {
  94                         return DemuxerObject::Normal(dmx);
  95                     } else {
  96                         println!("demuxer creation failed!");
  97                         return DemuxerObject::None;
  98                     }
  99                 }
 100             }
 101             if ifmt.is_some() {
 102                 return DemuxerObject::None;
 103             }
 104             if !dmx_name.is_empty() {
 105                 if print_info {
 106                     println!("trying raw demuxer {} on {}", dmx_name, name);
 107                 }
 108                 if let Some(rdmx_fact) = reg.rdmx_reg.find_demuxer(dmx_name) {
 109                     br.seek(SeekFrom::Start(0)).unwrap();
 110                     let ret = SelfBorrow::try_new(brb, |br_| {
 111                             unsafe {
 112                                 create_raw_demuxer(rdmx_fact, br_.as_mut().unwrap().get_object_mut()).ok()
 113                             }
 114                         });
 115                     if let Some(dmx) = ret {
 116                         let mut pkts = Vec::new();
 117                         for stream in dmx.get_object().get_streams() {
 118                             if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
 119                                 let mut packetiser = (pcreate)();
 120                                 packetiser.attach_stream(stream);
 121                                 pkts.push(Some(packetiser));
 122                             } else {
 123                                 pkts.push(None);
 124                             }
 125                         }
 126                         return DemuxerObject::Raw(dmx, pkts, false);
 127                     } else {
 128                         println!("raw demuxer creation failed!");
 129                         return DemuxerObject::None;
 130                     }
 131                 }
 132             }
 133             for rdmx in reg.rdmx_reg.iter() {
 134                 if rdmx.check_format(br) {
 135                     if print_info {
 136                         println!("detected {} as {}", name, rdmx.get_name());
 137                     }
 138                     br.seek(SeekFrom::Start(0)).unwrap();
 139                     let ret = SelfBorrow::try_new(brb, |br_| {
 140                             unsafe {
 141                                 create_raw_demuxer(*rdmx, br_.as_mut().unwrap().get_object_mut()).ok()
 142                             }
 143                         });
 144                     if let Some(dmx) = ret {
 145                         let mut pkts = Vec::new();
 146                         for stream in dmx.get_object().get_streams() {
 147                             if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
 148                                 let packetiser = (pcreate)();
 149                                 pkts.push(Some(packetiser));
 150                             } else {
 151                                 pkts.push(None);
 152                             }
 153                         }
 154                         return DemuxerObject::Raw(dmx, pkts, false);
 155                     } else {
 156                         println!("raw demuxer creation failed!");
 157                         return DemuxerObject::None;
 158                     }
 159                 }
 160             }
 161         }
 162         br.seek(SeekFrom::Start(0)).unwrap();
 163         let mut buf = vec![0; 1048576];
 164         let size = if let Ok(val) = br.peek_buf(&mut buf) { val } else {
 165                 println!("cannot read any data");
 166                 return DemuxerObject::None;
 167             };
 168         let mut pname = "";
 169
 170         for pinfo in reg.pkt_reg.iter() {
 171             let mut packetiser = (pinfo.get_packetiser)();
 172             packetiser.add_data(&buf[..size]);
 173             if packetiser.parse_stream(0).is_ok() {
 174                 pname = pinfo.name;
 175                 break;
 176             }
 177         }
 178         if !pname.is_empty() {
 179             if print_info {
 180                 println!("found raw stream of type {} for {}", pname, name);
 181             }
 182             let pcreate = reg.pkt_reg.find_packetiser(pname).unwrap();
 183             let rctx = SelfBorrow::new(brb, |br_| {
 184                     unsafe {
 185                         let mut packetiser = (pcreate)();
 186                         packetiser.add_data(&buf[..size]);
 187                         let stream = packetiser.parse_stream(0).unwrap();
 188                         packetiser.reset();
 189                         RawStreamCtx::new(stream, packetiser, br_.as_mut().unwrap().get_object_mut())
 190                     }
 191                 });
 192             DemuxerObject::RawStream(rctx)
 193         } else {
 194             DemuxerObject::None
 195         }
 196     }
 197     pub fn create_imgseq(isd: ImgSeqDemuxer) -> Self {
 198         DemuxerObject::ImageSequence(isd)
 199     }
 200     pub fn is_none(&self) -> bool {
 201         matches!(*self, DemuxerObject::None)
 202     }
 203     pub fn get_duration(&self) -> u64 {
 204         match *self {
 205             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_duration(),
 206             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_duration(),
 207             DemuxerObject::RawStream(ref ctx) => {
 208                 NATimeInfo::ts_to_time(ctx.get_object().stream.duration, 1000, ctx.get_object().stream.tb_num, ctx.get_object().stream.tb_den)
 209             },
 210             _ => 0,
 211         }
 212     }
 213     pub fn get_num_streams(&self) -> usize {
 214         match *self {
 215             DemuxerObject::None => 0,
 216             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_num_streams(),
 217             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_num_streams(),
 218             DemuxerObject::RawStream(_) => 1,
 219             DemuxerObject::ImageSequence(_) => 1,
 220         }
 221     }
 222     pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
 223         match *self {
 224             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_stream(idx),
 225             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_stream(idx),
 226             DemuxerObject::RawStream(ref ctx) if idx == 0 => Some(ctx.get_object().stream.clone()),
 227             DemuxerObject::ImageSequence(ref ctx) if idx == 0 => Some(ctx.stream.clone()),
 228             _ => None,
 229         }
 230     }
 231     /*pub fn get_streams(&self) -> StreamIter {
 232         match *self {
 233             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_streams(),
 234             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_streams(),
 235             DemuxerObject::RawStream(ref ctx) => ctx.get_object().sm.iter(),
 236             DemuxerObject::ImageSequence(ref ctx) => ctx.sm.iter(),
 237             _ => unreachable!(),
 238         }
 239     }*/
 240     pub fn get_stream_manager(&self) -> &StreamManager {
 241         match *self {
 242             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_stream_manager(),
 243             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_stream_manager(),
 244             DemuxerObject::RawStream(ref ctx) => &ctx.get_object().sm,
 245             DemuxerObject::ImageSequence(ref ctx) => &ctx.sm,
 246             _ => unreachable!(),
 247         }
 248     }
 249     pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
 250         match *self {
 251             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().get_frame(),
 252             DemuxerObject::Raw(ref mut dmx, ref mut packetisers, ref mut eof) => {
 253                 let dmx = dmx.get_object_mut();
 254                 loop {
 255                     let mut has_some = false;
 256                     for (stream, p) in dmx.get_streams().zip(packetisers.iter_mut()) {
 257                         if let Some(ref mut pkts) = p {
 258                             match pkts.get_packet(stream.clone()) {
 259                                 Ok(Some(pkt)) => return Ok(pkt),
 260                                 Ok(None) | Err(DecoderError::ShortData) => {
 261                                     if *eof {
 262                                         *p = None;
 263                                     }
 264                                 },
 265                                 Err(err) => {
 266                                     println!("packetisation error {:?}", err);
 267                                     return Err(DemuxerError::InvalidData);
 268                                 }
 269                             };
 270                             has_some |= p.is_some();
 271                         }
 272                     }
 273                     if !has_some {
 274                         return Err(DemuxerError::EOF);
 275                     }
 276                     if let Ok(data) = dmx.get_data() {
 277                         let id = data.get_stream().get_id();
 278                         for (i, stream) in dmx.get_streams().enumerate() {
 279                             if stream.get_id() == id {
 280                                 if let Some(ref mut pkts) = packetisers[i] {
 281                                     pkts.add_data(&data.get_buffer());
 282                                 }
 283                                 break;
 284                             }
 285                         }
 286                     } else {
 287                         *eof = true;
 288                     }
 289                 }
 290             },
 291             DemuxerObject::RawStream(ref mut ctx) => {
 292                 let ctx = ctx.get_object_mut();
 293                 let mut buf = [0; 65536];
 294                 loop {
 295                     match ctx.packetiser.get_packet(ctx.stream.clone()) {
 296                         Ok(Some(mut packet)) => {
 297                             if packet.get_pts().is_none() && packet.get_duration().is_some() {
 298                                 packet.ts.pts = Some(ctx.pts);
 299                             }
 300                             ctx.pts += packet.get_duration().unwrap_or(0);
 301                             return Ok(packet);
 302                         },
 303                         Ok(None) => {},
 304                         Err(DecoderError::ShortData) => {},
 305                         _ => return Err(DemuxerError::InvalidData),
 306                     };
 307                     match ctx.br.read_buf_some(&mut buf) {
 308                         Ok(size) => {
 309                             ctx.packetiser.add_data(&buf[..size]);
 310                         },
 311                         Err(_) => {
 312                             match ctx.packetiser.get_packet(ctx.stream.clone()) {
 313                                 Ok(Some(mut packet)) => {
 314                                     if packet.get_pts().is_none() && packet.get_duration().is_some() {
 315                                         packet.ts.pts = Some(ctx.pts);
 316                                     }
 317                                     ctx.pts += packet.get_duration().unwrap_or(0);
 318                                     return Ok(packet);
 319                                 },
 320                                 Ok(None) | Err(DecoderError::ShortData) => return Err(DemuxerError::EOF),
 321                                 _ => return Err(DemuxerError::InvalidData),
 322                             };
 323                         },
 324                     };
 325                 }
 326             },
 327             DemuxerObject::ImageSequence(ref mut ctx) => ctx.get_frame(),
 328             _ => unreachable!(),
 329         }
 330     }
 331     pub fn seek(&mut self, seek_time: NATimePoint) -> DemuxerResult<()> {
 332         match *self {
 333             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().seek(seek_time),
 334             DemuxerObject::Raw(ref mut dmx, _, _) => dmx.get_object_mut().seek(seek_time),
 335             DemuxerObject::ImageSequence(ref mut ctx) => ctx.seek(seek_time),
 336             _ => Err(DemuxerError::NotImplemented),
 337         }
 338     }
 339 }
 340
 341 impl<'a> NAOptionHandler for DemuxerObject<'a> {
 342     fn get_supported_options(&self) -> &[NAOptionDefinition] {
 343         match *self {
 344             DemuxerObject::Normal(ref dmx) => dmx.get_object().get_supported_options(),
 345             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().get_supported_options(),
 346             DemuxerObject::ImageSequence(ref ctx) => ctx.get_supported_options(),
 347             _ => &[],
 348         }
 349     }
 350     fn set_options(&mut self, options: &[NAOption]) {
 351         match *self {
 352             DemuxerObject::Normal(ref mut dmx) => dmx.get_object_mut().set_options(options),
 353             DemuxerObject::Raw(ref mut dmx, _, _) => dmx.get_object_mut().set_options(options),
 354             DemuxerObject::ImageSequence(ref mut ctx) => ctx.set_options(options),
 355             _ => {},
 356         }
 357     }
 358     fn query_option_value(&self, name: &str) -> Option<NAValue> {
 359         match *self {
 360             DemuxerObject::Normal(ref dmx) => dmx.get_object().query_option_value(name),
 361             DemuxerObject::Raw(ref dmx, _, _) => dmx.get_object().query_option_value(name),
 362             DemuxerObject::ImageSequence(ref ctx) => ctx.query_option_value(name),
 363             _ => None,
 364         }
 365     }
 366 }
 367
 368 pub fn detect_tags(br: &mut ByteReader) -> (bool, u64, Option<u64>) {
 369     let mut is_raw = false;
 370     let mut start = 0;
 371     let mut end = None;
 372
 373     // check for ID3v{2-4}
 374     let mut buf = [0; 5];
 375     if br.peek_buf(&mut buf).is_err() {
 376         return (false, 0, None);
 377     }
 378     if &buf[0..3] == b"ID3" && buf[3] > 0 && buf[3] < 5 && buf[4] == 0 { //ID3 tag found, must be a raw stream
 379         br.read_skip(6).unwrap();
 380         let mut size = 0;
 381         for _ in 0..4 {
 382             let b = br.read_byte().unwrap();
 383             if (b & 0x80) != 0 {
 384                 println!("Invalid ID3 size");
 385                 break;
 386             }
 387             size = (size << 7) | u64::from(b);
 388         }
 389         start = size + 10;
 390         is_raw = true;
 391     }
 392     // check for ID3v1
 393     br.seek(SeekFrom::End(-128)).unwrap();
 394     let off = br.tell();
 395     br.peek_buf(&mut buf[..3]).unwrap();
 396     if &buf[0..3] == b"TAG" {
 397         end = Some(off);
 398     }
 399     // check for APETAG
 400     let mut buf = [0; 8];
 401     if let Some(off) = end {
 402         br.seek(SeekFrom::Start(off - 32)).unwrap();
 403     } else {
 404         br.seek(SeekFrom::End(-32)).unwrap();
 405     }
 406     let off = br.tell();
 407     br.read_buf(&mut buf).unwrap();
 408     if &buf == b"APETAGEX" {
 409         let ver     = br.read_u32le().unwrap();
 410         let size    = u64::from(br.read_u32le().unwrap());
 411         let _items  = br.read_u32le().unwrap();
 412         let flags   = br.read_u32le().unwrap();
 413         if ver == 1000 || (flags & 0x80000000) == 0 {
 414             end = Some(off - size + 32);
 415         } else {
 416             end = Some(off - size);
 417         }
 418     }
 419
 420     (is_raw, start, end)
 421 }