| 1 | use std::io::SeekFrom; |
| 2 | use nihav_core::codecs::*; |
| 3 | use nihav_core::demuxers::*; |
| 4 | use nihav_registry::detect; |
| 5 | use nihav_core::io::byteio::ByteReader; |
| 6 | use nihav_allstuff::*; |
| 7 | |
| 8 | pub struct FullRegister { |
| 9 | pub dmx_reg: RegisteredDemuxers, |
| 10 | pub rdmx_reg: RegisteredRawDemuxers, |
| 11 | pub pkt_reg: RegisteredPacketisers, |
| 12 | pub dec_reg: RegisteredDecoders, |
| 13 | } |
| 14 | |
| 15 | impl FullRegister { |
| 16 | pub fn new() -> Self { |
| 17 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 18 | nihav_register_all_demuxers(&mut dmx_reg); |
| 19 | let mut rdmx_reg = RegisteredRawDemuxers::new(); |
| 20 | nihav_register_all_raw_demuxers(&mut rdmx_reg); |
| 21 | let mut dec_reg = RegisteredDecoders::new(); |
| 22 | nihav_register_all_decoders(&mut dec_reg); |
| 23 | let mut pkt_reg = RegisteredPacketisers::new(); |
| 24 | nihav_register_all_packetisers(&mut pkt_reg); |
| 25 | Self { dmx_reg, rdmx_reg, pkt_reg, dec_reg } |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | pub struct RawStreamCtx<'a> { |
| 30 | stream: NAStreamRef, |
| 31 | pkt: Box<dyn NAPacketiser + Send>, |
| 32 | br: &'a mut ByteReader<'a>, |
| 33 | pts: u64, |
| 34 | seek: SeekIndex, |
| 35 | } |
| 36 | |
| 37 | impl<'a> RawStreamCtx<'a> { |
| 38 | fn new(stream: NAStreamRef, packetiser: Box<dyn NAPacketiser + Send>, br: &'a mut ByteReader<'a>) -> Self { |
| 39 | let mut seek = SeekIndex::new(); |
| 40 | seek.add_stream(0); |
| 41 | Self { stream, pkt: packetiser, br, pts: 0, seek } |
| 42 | } |
| 43 | fn account_for_packet(&mut self, packet: &mut NAPacket) { |
| 44 | let pos = self.br.tell() - (self.pkt.bytes_left() as u64); |
| 45 | if packet.get_pts().is_none() && packet.get_duration().is_some() { |
| 46 | packet.ts.pts = Some(self.pts); |
| 47 | } |
| 48 | if packet.is_keyframe() { |
| 49 | let pts = packet.get_pts().unwrap_or(self.pts); |
| 50 | let time = NATimeInfo::ts_to_time(pts, 1000, self.stream.tb_num, self.stream.tb_den); |
| 51 | let in_range = if let Some(last) = self.seek.seek_info[0].entries.last() { |
| 52 | last.pts >= pts |
| 53 | } else { |
| 54 | false |
| 55 | }; |
| 56 | if !in_range { |
| 57 | self.seek.add_entry(0, SeekEntry { time, pts, pos }); |
| 58 | } |
| 59 | } |
| 60 | self.pts += packet.get_duration().unwrap_or(0); |
| 61 | } |
| 62 | fn get_frame(&mut self) -> DemuxerResult<NAPacket> { |
| 63 | let mut buf = [0; 1048576]; |
| 64 | loop { |
| 65 | match self.pkt.get_packet(self.stream.clone()) { |
| 66 | Ok(Some(mut packet)) => { |
| 67 | self.account_for_packet(&mut packet); |
| 68 | return Ok(packet); |
| 69 | }, |
| 70 | Ok(None) => {}, |
| 71 | Err(DecoderError::ShortData) => {}, |
| 72 | _ => return Err(DemuxerError::InvalidData), |
| 73 | }; |
| 74 | match self.br.read_buf_some(&mut buf) { |
| 75 | Ok(size) => { |
| 76 | self.pkt.add_data(&buf[..size]); |
| 77 | }, |
| 78 | Err(_) => { |
| 79 | match self.pkt.get_packet(self.stream.clone()) { |
| 80 | Ok(Some(mut packet)) => { |
| 81 | self.account_for_packet(&mut packet); |
| 82 | return Ok(packet); |
| 83 | }, |
| 84 | Ok(None) | Err(DecoderError::ShortData) => return Err(DemuxerError::EOF), |
| 85 | _ => return Err(DemuxerError::InvalidData), |
| 86 | }; |
| 87 | }, |
| 88 | }; |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | pub enum DemuxerObject<'a> { |
| 94 | None, |
| 95 | Normal(Demuxer<'a>), |
| 96 | Raw(RawDemuxer<'a>, Vec<Option<Box<dyn NAPacketiser + Send>>>, bool), |
| 97 | RawStream(RawStreamCtx<'a>), |
| 98 | } |
| 99 | |
| 100 | impl<'a> DemuxerObject<'a> { |
| 101 | pub fn create(br: &'a mut ByteReader<'a>, reg: &FullRegister, name: &str, is_raw: bool) -> DemuxerObject<'a> { |
| 102 | if !is_raw { |
| 103 | let res = detect::detect_format(name, br); |
| 104 | let (dmx_name, _) = res.unwrap_or(("", detect::DetectionScore::No)); |
| 105 | if dmx_name != "" { |
| 106 | println!("trying demuxer {} on {}", dmx_name, name); |
| 107 | if let Some(dmx_fact) = reg.dmx_reg.find_demuxer(dmx_name) { |
| 108 | br.seek(SeekFrom::Start(0)).unwrap(); |
| 109 | let dmx = create_demuxer(dmx_fact, br).unwrap(); |
| 110 | return DemuxerObject::Normal(dmx); |
| 111 | } |
| 112 | } |
| 113 | if dmx_name != "" { |
| 114 | println!("trying raw demuxer {} on {}", dmx_name, name); |
| 115 | if let Some(rdmx_fact) = reg.rdmx_reg.find_demuxer(dmx_name) { |
| 116 | br.seek(SeekFrom::Start(0)).unwrap(); |
| 117 | let dmx = create_raw_demuxer(rdmx_fact, br).unwrap(); |
| 118 | let mut pkts = Vec::new(); |
| 119 | for stream in dmx.get_streams() { |
| 120 | if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) { |
| 121 | let packetiser = (pcreate)(); |
| 122 | pkts.push(Some(packetiser)); |
| 123 | } else { |
| 124 | pkts.push(None); |
| 125 | } |
| 126 | } |
| 127 | return DemuxerObject::Raw(dmx, pkts, false); |
| 128 | } |
| 129 | } |
| 130 | for rdmx in reg.rdmx_reg.iter() { |
| 131 | if rdmx.check_format(br) { |
| 132 | println!("detected {} as {}", name, rdmx.get_name()); |
| 133 | br.seek(SeekFrom::Start(0)).unwrap(); |
| 134 | let dmx = create_raw_demuxer(*rdmx, br).unwrap(); |
| 135 | let mut pkts = Vec::new(); |
| 136 | for stream in dmx.get_streams() { |
| 137 | if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) { |
| 138 | let packetiser = (pcreate)(); |
| 139 | pkts.push(Some(packetiser)); |
| 140 | } else { |
| 141 | pkts.push(None); |
| 142 | } |
| 143 | } |
| 144 | return DemuxerObject::Raw(dmx, pkts, false); |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | br.seek(SeekFrom::Start(0)).unwrap(); |
| 149 | let mut buf = vec![0; 1048576]; |
| 150 | let size = br.read_buf_some(&mut buf).unwrap(); |
| 151 | br.seek(SeekFrom::Start(0)).unwrap(); |
| 152 | let mut pname = ""; |
| 153 | |
| 154 | for pinfo in reg.pkt_reg.iter() { |
| 155 | let mut packetiser = (pinfo.get_packetiser)(); |
| 156 | packetiser.add_data(&buf[..size]); |
| 157 | if packetiser.parse_stream(0).is_ok() { |
| 158 | pname = pinfo.name; |
| 159 | break; |
| 160 | } |
| 161 | } |
| 162 | if pname != "" { |
| 163 | println!("found raw stream of type {} for {}", pname, name); |
| 164 | let pcreate = reg.pkt_reg.find_packetiser(pname).unwrap(); |
| 165 | let mut packetiser = (pcreate)(); |
| 166 | packetiser.add_data(&buf[..size]); |
| 167 | let stream = packetiser.parse_stream(0).unwrap(); |
| 168 | packetiser.reset(); |
| 169 | DemuxerObject::RawStream(RawStreamCtx::new(stream, packetiser, br)) |
| 170 | } else { |
| 171 | DemuxerObject::None |
| 172 | } |
| 173 | } |
| 174 | pub fn is_none(&self) -> bool { |
| 175 | match *self { |
| 176 | DemuxerObject::None => true, |
| 177 | _ => false, |
| 178 | } |
| 179 | } |
| 180 | pub fn get_duration(&self) -> u64 { |
| 181 | match *self { |
| 182 | DemuxerObject::Normal(ref dmx) => dmx.get_duration(), |
| 183 | DemuxerObject::Raw(ref dmx, _, _) => dmx.get_duration(), |
| 184 | DemuxerObject::RawStream(ref ctx) => { |
| 185 | NATimeInfo::ts_to_time(ctx.stream.duration, 1000, ctx.stream.tb_num, ctx.stream.tb_den) |
| 186 | }, |
| 187 | _ => 0, |
| 188 | } |
| 189 | } |
| 190 | pub fn get_num_streams(&self) -> usize { |
| 191 | match *self { |
| 192 | DemuxerObject::None => 0, |
| 193 | DemuxerObject::Normal(ref dmx) => dmx.get_num_streams(), |
| 194 | DemuxerObject::Raw(ref dmx, _, _) => dmx.get_num_streams(), |
| 195 | DemuxerObject::RawStream(_) => 1, |
| 196 | } |
| 197 | } |
| 198 | pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> { |
| 199 | match *self { |
| 200 | DemuxerObject::Normal(ref dmx) => dmx.get_stream(idx), |
| 201 | DemuxerObject::Raw(ref dmx, _, _) => dmx.get_stream(idx), |
| 202 | DemuxerObject::RawStream(ref ctx) if idx == 0 => Some(ctx.stream.clone()), |
| 203 | _ => None, |
| 204 | } |
| 205 | } |
| 206 | pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> { |
| 207 | match *self { |
| 208 | DemuxerObject::Normal(ref mut dmx) => dmx.get_frame(), |
| 209 | DemuxerObject::Raw(ref mut dmx, ref mut packetisers, ref mut eof) => { |
| 210 | loop { |
| 211 | let mut has_some = false; |
| 212 | for (stream, p) in dmx.get_streams().zip(packetisers.iter_mut()) { |
| 213 | if let Some(ref mut pkts) = p { |
| 214 | match pkts.get_packet(stream.clone()) { |
| 215 | Ok(Some(pkt)) => return Ok(pkt), |
| 216 | Ok(None) | Err(DecoderError::ShortData) => { |
| 217 | if *eof { |
| 218 | *p = None; |
| 219 | } |
| 220 | }, |
| 221 | Err(err) => { |
| 222 | println!("packetisation error {:?}", err); |
| 223 | return Err(DemuxerError::InvalidData); |
| 224 | } |
| 225 | }; |
| 226 | has_some |= p.is_some(); |
| 227 | } |
| 228 | } |
| 229 | if !has_some { |
| 230 | return Err(DemuxerError::EOF); |
| 231 | } |
| 232 | if let Ok(data) = dmx.get_data() { |
| 233 | let id = data.get_stream().get_id(); |
| 234 | for (i, stream) in dmx.get_streams().enumerate() { |
| 235 | if stream.get_id() == id { |
| 236 | if let Some(ref mut pkts) = packetisers[i] { |
| 237 | pkts.add_data(&data.get_buffer()); |
| 238 | } |
| 239 | break; |
| 240 | } |
| 241 | } |
| 242 | } else { |
| 243 | *eof = true; |
| 244 | } |
| 245 | } |
| 246 | }, |
| 247 | DemuxerObject::RawStream(ref mut ctx) => ctx.get_frame(), |
| 248 | _ => unreachable!(), |
| 249 | } |
| 250 | } |
| 251 | pub fn seek(&mut self, seek_time: NATimePoint) -> DemuxerResult<()> { |
| 252 | match *self { |
| 253 | DemuxerObject::Normal(ref mut dmx) => dmx.seek(seek_time), |
| 254 | DemuxerObject::Raw(ref mut dmx, _, _) => dmx.seek(seek_time), |
| 255 | DemuxerObject::RawStream(ref mut ctx) => { |
| 256 | if seek_time == NATimePoint::None { |
| 257 | return Err(DemuxerError::SeekError); |
| 258 | } |
| 259 | if let Some(last) = ctx.seek.seek_info[0].entries.last() { |
| 260 | let in_index = match seek_time { |
| 261 | NATimePoint::None => unreachable!(), |
| 262 | NATimePoint::PTS(pts) => last.pts >= pts, |
| 263 | NATimePoint::Milliseconds(ms) => last.time >= ms, |
| 264 | }; |
| 265 | if in_index { |
| 266 | if let Some(result) = ctx.seek.find_pos(seek_time) { |
| 267 | ctx.br.seek(SeekFrom::Start(result.pos))?; |
| 268 | ctx.pts = result.pts; |
| 269 | ctx.pkt.reset(); |
| 270 | return Ok(()); |
| 271 | } |
| 272 | } |
| 273 | } |
| 274 | if let Some(last) = ctx.seek.seek_info[0].entries.last() { |
| 275 | ctx.br.seek(SeekFrom::Start(last.pos))?; |
| 276 | ctx.pts = last.pts; |
| 277 | ctx.pkt.reset(); |
| 278 | } |
| 279 | let mut key_pts = 0; |
| 280 | while let Ok(pkt) = ctx.get_frame() { |
| 281 | if !pkt.ts.less_than(seek_time) && !pkt.ts.equal(seek_time) { |
| 282 | break; |
| 283 | } |
| 284 | if pkt.is_keyframe() { |
| 285 | key_pts = pkt.get_pts().unwrap_or(0); |
| 286 | } |
| 287 | } |
| 288 | let result = ctx.seek.find_pos(NATimePoint::PTS(key_pts)).unwrap(); |
| 289 | ctx.br.seek(SeekFrom::Start(result.pos))?; |
| 290 | ctx.pts = result.pts; |
| 291 | ctx.pkt.reset(); |
| 292 | Ok(()) |
| 293 | }, |
| 294 | _ => Err(DemuxerError::NotImplemented), |
| 295 | } |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | pub fn detect_tags(br: &mut ByteReader) -> (bool, u64, Option<u64>) { |
| 300 | let mut is_raw = false; |
| 301 | let mut start = 0; |
| 302 | let mut end = None; |
| 303 | |
| 304 | // check for ID3v{2-4} |
| 305 | let mut buf = [0; 5]; |
| 306 | loop { |
| 307 | if br.peek_buf(&mut buf).is_err() { |
| 308 | break; |
| 309 | } |
| 310 | if &buf[0..3] == b"ID3" && buf[3] > 0 && buf[3] < 5 && buf[4] == 0 { //ID3 tag found, must be a raw stream |
| 311 | br.read_skip(6).unwrap(); |
| 312 | let mut size = 0; |
| 313 | for _ in 0..4 { |
| 314 | let b = br.read_byte().unwrap(); |
| 315 | if (b & 0x80) != 0 { |
| 316 | println!("Invalid ID3 size"); |
| 317 | break; |
| 318 | } |
| 319 | size = (size << 7) | u64::from(b); |
| 320 | } |
| 321 | start += size + 10; |
| 322 | br.read_skip(size as usize).unwrap(); |
| 323 | while let Ok(0) = br.read_byte() { |
| 324 | start += 1; |
| 325 | } |
| 326 | br.seek(SeekFrom::Start(start)).unwrap(); |
| 327 | is_raw = true; |
| 328 | } else { |
| 329 | break; |
| 330 | } |
| 331 | } |
| 332 | // check for ID3v1 |
| 333 | br.seek(SeekFrom::End(-128)).unwrap(); |
| 334 | let off = br.tell(); |
| 335 | br.peek_buf(&mut buf[..3]).unwrap(); |
| 336 | if &buf[0..3] == b"TAG" { |
| 337 | end = Some(off); |
| 338 | // check for Lyrics v2 |
| 339 | let mut sig = [0; 9]; |
| 340 | br.seek(SeekFrom::End(-128 - 9)).unwrap(); |
| 341 | br.peek_buf(&mut sig).unwrap(); |
| 342 | if &sig == b"LYRICS200" { |
| 343 | br.seek(SeekFrom::Current(-6)).unwrap(); |
| 344 | let mut sizestr = [0; 6]; |
| 345 | br.peek_buf(&mut sizestr).unwrap(); |
| 346 | if let Ok(sstr) = std::str::from_utf8(&sizestr) { |
| 347 | if let Ok(size) = sstr.parse::<u64>() { |
| 348 | end = Some(br.tell() - size); |
| 349 | } |
| 350 | } |
| 351 | } |
| 352 | } |
| 353 | // check for APETAG |
| 354 | let mut buf = [0; 8]; |
| 355 | if let Some(off) = end { |
| 356 | br.seek(SeekFrom::Start(off - 32)).unwrap(); |
| 357 | } else { |
| 358 | br.seek(SeekFrom::End(-32)).unwrap(); |
| 359 | } |
| 360 | let off = br.tell(); |
| 361 | br.read_buf(&mut buf).unwrap(); |
| 362 | if &buf == b"APETAGEX" { |
| 363 | let ver = br.read_u32le().unwrap(); |
| 364 | let size = u64::from(br.read_u32le().unwrap()); |
| 365 | let _items = br.read_u32le().unwrap(); |
| 366 | let flags = br.read_u32le().unwrap(); |
| 367 | if ver == 1000 || (flags & 0x80000000) == 0 { |
| 368 | end = Some(off - size + 32); |
| 369 | } else { |
| 370 | end = Some(off - size); |
| 371 | } |
| 372 | } |
| 373 | // check for MusicMatch tag |
| 374 | let ret = if let Some(endpos) = end { |
| 375 | br.seek(SeekFrom::Start(endpos - 0x30)) |
| 376 | } else { |
| 377 | br.seek(SeekFrom::End(-0x30)) |
| 378 | }; |
| 379 | if ret.is_ok() && br.tell() > (0x2000 - 0x30) { |
| 380 | let mut buf = [0; 19]; |
| 381 | br.peek_buf(&mut buf).unwrap(); |
| 382 | if &buf == b"Brava Software Inc." { |
| 383 | br.seek(SeekFrom::Current(-20)).unwrap(); |
| 384 | let mut mm_start = u64::from(br.read_u32le().unwrap()); |
| 385 | if mm_start > 4 && mm_start + 0x2000 <= br.tell() { |
| 386 | let diff = (br.tell() - mm_start) & 3; |
| 387 | if diff != 0 { |
| 388 | mm_start -= 4 - diff; |
| 389 | } |
| 390 | end = Some(mm_start); |
| 391 | } |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | (is_raw, start, end) |
| 396 | } |