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55d3e99f KS |
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 | ||
e01dfa5a KS |
29 | pub struct RawStreamCtx<'a> { |
30 | stream: NAStreamRef, | |
31 | pkt: Box<dyn NAPacketiser + Send>, | |
32 | br: &'a mut ByteReader<'a>, | |
33 | pts: u64, | |
9ba5cad5 | 34 | seek: SeekIndex, |
e01dfa5a KS |
35 | } |
36 | ||
37 | impl<'a> RawStreamCtx<'a> { | |
38 | fn new(stream: NAStreamRef, packetiser: Box<dyn NAPacketiser + Send>, br: &'a mut ByteReader<'a>) -> Self { | |
9ba5cad5 KS |
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 | } | |
e01dfa5a KS |
90 | } |
91 | } | |
92 | ||
55d3e99f KS |
93 | pub enum DemuxerObject<'a> { |
94 | None, | |
95 | Normal(Demuxer<'a>), | |
96 | Raw(RawDemuxer<'a>, Vec<Option<Box<dyn NAPacketiser + Send>>>, bool), | |
e01dfa5a | 97 | RawStream(RawStreamCtx<'a>), |
55d3e99f KS |
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.peek_buf(&mut buf).unwrap(); | |
151 | let mut pname = ""; | |
152 | ||
153 | for pinfo in reg.pkt_reg.iter() { | |
154 | let mut packetiser = (pinfo.get_packetiser)(); | |
155 | packetiser.add_data(&buf[..size]); | |
156 | if packetiser.parse_stream(0).is_ok() { | |
157 | pname = pinfo.name; | |
158 | break; | |
159 | } | |
160 | } | |
161 | if pname != "" { | |
162 | println!("found raw stream of type {} for {}", pname, name); | |
163 | let pcreate = reg.pkt_reg.find_packetiser(pname).unwrap(); | |
164 | let mut packetiser = (pcreate)(); | |
165 | packetiser.add_data(&buf[..size]); | |
166 | let stream = packetiser.parse_stream(0).unwrap(); | |
167 | packetiser.reset(); | |
e01dfa5a | 168 | DemuxerObject::RawStream(RawStreamCtx::new(stream, packetiser, br)) |
55d3e99f KS |
169 | } else { |
170 | DemuxerObject::None | |
171 | } | |
172 | } | |
173 | pub fn is_none(&self) -> bool { | |
174 | match *self { | |
175 | DemuxerObject::None => true, | |
176 | _ => false, | |
177 | } | |
178 | } | |
179 | pub fn get_duration(&self) -> u64 { | |
180 | match *self { | |
181 | DemuxerObject::Normal(ref dmx) => dmx.get_duration(), | |
182 | DemuxerObject::Raw(ref dmx, _, _) => dmx.get_duration(), | |
183 | _ => 0, | |
184 | } | |
185 | } | |
186 | pub fn get_num_streams(&self) -> usize { | |
187 | match *self { | |
188 | DemuxerObject::None => 0, | |
189 | DemuxerObject::Normal(ref dmx) => dmx.get_num_streams(), | |
190 | DemuxerObject::Raw(ref dmx, _, _) => dmx.get_num_streams(), | |
e01dfa5a | 191 | DemuxerObject::RawStream(_) => 1, |
55d3e99f KS |
192 | } |
193 | } | |
194 | pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> { | |
195 | match *self { | |
196 | DemuxerObject::Normal(ref dmx) => dmx.get_stream(idx), | |
197 | DemuxerObject::Raw(ref dmx, _, _) => dmx.get_stream(idx), | |
e01dfa5a | 198 | DemuxerObject::RawStream(ref ctx) if idx == 0 => Some(ctx.stream.clone()), |
55d3e99f KS |
199 | _ => None, |
200 | } | |
201 | } | |
202 | pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> { | |
203 | match *self { | |
204 | DemuxerObject::Normal(ref mut dmx) => dmx.get_frame(), | |
205 | DemuxerObject::Raw(ref mut dmx, ref mut packetisers, ref mut eof) => { | |
206 | loop { | |
207 | let mut has_some = false; | |
208 | for (stream, p) in dmx.get_streams().zip(packetisers.iter_mut()) { | |
209 | if let Some(ref mut pkts) = p { | |
210 | match pkts.get_packet(stream.clone()) { | |
211 | Ok(Some(pkt)) => return Ok(pkt), | |
212 | Ok(None) | Err(DecoderError::ShortData) => { | |
213 | if *eof { | |
214 | *p = None; | |
215 | } | |
216 | }, | |
217 | Err(err) => { | |
218 | println!("packetisation error {:?}", err); | |
219 | return Err(DemuxerError::InvalidData); | |
220 | } | |
221 | }; | |
222 | has_some |= p.is_some(); | |
223 | } | |
224 | } | |
225 | if !has_some { | |
226 | return Err(DemuxerError::EOF); | |
227 | } | |
228 | if let Ok(data) = dmx.get_data() { | |
229 | let id = data.get_stream().get_id(); | |
230 | for (i, stream) in dmx.get_streams().enumerate() { | |
231 | if stream.get_id() == id { | |
232 | if let Some(ref mut pkts) = packetisers[i] { | |
233 | pkts.add_data(&data.get_buffer()); | |
234 | } | |
235 | break; | |
236 | } | |
237 | } | |
238 | } else { | |
239 | *eof = true; | |
240 | } | |
241 | } | |
242 | }, | |
9ba5cad5 | 243 | DemuxerObject::RawStream(ref mut ctx) => ctx.get_frame(), |
55d3e99f KS |
244 | _ => unreachable!(), |
245 | } | |
246 | } | |
247 | pub fn seek(&mut self, seek_time: NATimePoint) -> DemuxerResult<()> { | |
248 | match *self { | |
249 | DemuxerObject::Normal(ref mut dmx) => dmx.seek(seek_time), | |
250 | DemuxerObject::Raw(ref mut dmx, _, _) => dmx.seek(seek_time), | |
9ba5cad5 KS |
251 | DemuxerObject::RawStream(ref mut ctx) => { |
252 | if seek_time == NATimePoint::None { | |
253 | return Err(DemuxerError::SeekError); | |
254 | } | |
255 | if let Some(last) = ctx.seek.seek_info[0].entries.last() { | |
256 | let in_index = match seek_time { | |
257 | NATimePoint::None => unreachable!(), | |
258 | NATimePoint::PTS(pts) => last.pts >= pts, | |
259 | NATimePoint::Milliseconds(ms) => last.time >= ms, | |
260 | }; | |
261 | if in_index { | |
262 | if let Some(result) = ctx.seek.find_pos(seek_time) { | |
263 | ctx.br.seek(SeekFrom::Start(result.pos))?; | |
264 | ctx.pts = result.pts; | |
265 | ctx.pkt.reset(); | |
266 | return Ok(()); | |
267 | } | |
268 | } | |
269 | } | |
270 | if let Some(last) = ctx.seek.seek_info[0].entries.last() { | |
271 | ctx.br.seek(SeekFrom::Start(last.pos))?; | |
272 | ctx.pts = last.pts; | |
273 | ctx.pkt.reset(); | |
274 | } | |
275 | let mut key_pts = 0; | |
276 | while let Ok(pkt) = ctx.get_frame() { | |
277 | if !pkt.ts.less_than(seek_time) && !pkt.ts.equal(seek_time) { | |
278 | break; | |
279 | } | |
280 | if pkt.is_keyframe() { | |
281 | key_pts = pkt.get_pts().unwrap_or(0); | |
282 | } | |
283 | } | |
284 | let result = ctx.seek.find_pos(NATimePoint::PTS(key_pts)).unwrap(); | |
285 | ctx.br.seek(SeekFrom::Start(result.pos))?; | |
286 | ctx.pts = result.pts; | |
287 | ctx.pkt.reset(); | |
288 | Ok(()) | |
289 | }, | |
55d3e99f KS |
290 | _ => Err(DemuxerError::NotImplemented), |
291 | } | |
292 | } | |
293 | } | |
294 | ||
295 | pub fn detect_tags(br: &mut ByteReader) -> (bool, u64, Option<u64>) { | |
296 | let mut is_raw = false; | |
297 | let mut start = 0; | |
298 | let mut end = None; | |
299 | ||
300 | // check for ID3v{2-4} | |
301 | let mut buf = [0; 5]; | |
302 | br.peek_buf(&mut buf).unwrap(); | |
303 | if &buf[0..3] == b"ID3" && buf[3] > 0 && buf[3] < 5 && buf[4] == 0 { //ID3 tag found, must be a raw stream | |
304 | br.read_skip(6).unwrap(); | |
305 | let mut size = 0; | |
306 | for _ in 0..4 { | |
307 | let b = br.read_byte().unwrap(); | |
308 | if (b & 0x80) != 0 { | |
309 | println!("Invalid ID3 size"); | |
310 | break; | |
311 | } | |
312 | size = (size << 7) | u64::from(b); | |
313 | } | |
314 | start = size + 10; | |
315 | is_raw = true; | |
316 | } | |
317 | // check for ID3v1 | |
318 | br.seek(SeekFrom::End(-128)).unwrap(); | |
319 | let off = br.tell(); | |
320 | br.peek_buf(&mut buf[..3]).unwrap(); | |
321 | if &buf[0..3] == b"TAG" { | |
322 | end = Some(off); | |
323 | } | |
324 | // check for APETAG | |
325 | let mut buf = [0; 8]; | |
326 | if let Some(off) = end { | |
327 | br.seek(SeekFrom::Start(off - 32)).unwrap(); | |
328 | } else { | |
329 | br.seek(SeekFrom::End(-32)).unwrap(); | |
330 | } | |
331 | let off = br.tell(); | |
332 | br.read_buf(&mut buf).unwrap(); | |
333 | if &buf == b"APETAGEX" { | |
334 | let ver = br.read_u32le().unwrap(); | |
335 | let size = u64::from(br.read_u32le().unwrap()); | |
336 | let _items = br.read_u32le().unwrap(); | |
337 | let flags = br.read_u32le().unwrap(); | |
338 | if ver == 1000 || (flags & 0x80000000) == 0 { | |
339 | end = Some(off - size + 32); | |
340 | } else { | |
341 | end = Some(off - size); | |
342 | } | |
343 | } | |
344 | ||
345 | (is_raw, start, end) | |
346 | } |