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58309c73 KS |
1 | use nihav_core::demuxers::*; |
2 | use nihav_registry::register::*; | |
3 | ||
4 | macro_rules! mktag { | |
5 | ($a:expr, $b:expr, $c:expr, $d:expr) => ({ | |
6 | (($a as u32) << 24) | (($b as u32) << 16) | (($c as u32) << 8) | ($d as u32) | |
7 | }); | |
8 | ($arr:expr) => ({ | |
9 | (($arr[0] as u32) << 24) | (($arr[1] as u32) << 16) | (($arr[2] as u32) << 8) | ($arr[3] as u32) | |
10 | }); | |
11 | } | |
12 | ||
13 | trait Skip64 { | |
14 | fn skip64(&mut self, size: u64) -> ByteIOResult<()>; | |
15 | } | |
16 | ||
17 | impl<'a> Skip64 for ByteReader<'a> { | |
18 | fn skip64(&mut self, size: u64) -> ByteIOResult<()> { | |
19 | if (size as usize as u64) != size { | |
20 | self.seek(SeekFrom::Current(size as i64))?; | |
21 | } else { | |
22 | self.read_skip(size as usize)?; | |
23 | } | |
24 | Ok(()) | |
25 | } | |
26 | } | |
27 | ||
28 | fn read_chunk_header(br: &mut ByteReader) -> DemuxerResult<(u32, u64)> { | |
29 | let size = br.read_u32be()?; | |
30 | let ctype = br.read_u32be()?; | |
31 | if size == 0 { | |
32 | Ok((ctype, br.left() as u64)) | |
33 | } else if size == 1 { | |
34 | let size64 = br.read_u64be()?; | |
35 | validate!(size64 >= 16); | |
36 | Ok((ctype, size64 - 16)) | |
37 | } else { | |
38 | validate!(size >= 8); | |
39 | Ok((ctype, (size as u64) - 8)) | |
40 | } | |
41 | } | |
42 | ||
43 | struct RootChunkHandler { | |
44 | ctype: u32, | |
45 | parse: fn(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64>, | |
46 | } | |
47 | ||
48 | struct TrackChunkHandler { | |
49 | ctype: u32, | |
50 | parse: fn(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64>, | |
51 | } | |
52 | ||
53 | const IGNORED_CHUNKS: &[u32] = &[ | |
54 | mktag!(b"free"), mktag!(b"skip"), mktag!(b"udta"), mktag!(b"wide") | |
55 | ]; | |
56 | ||
57 | const ROOT_CHUNK_HANDLERS: &[RootChunkHandler] = &[ | |
58 | RootChunkHandler { ctype: mktag!(b"mdat"), parse: read_mdat }, | |
59 | RootChunkHandler { ctype: mktag!(b"moov"), parse: read_moov }, | |
60 | ]; | |
61 | ||
62 | macro_rules! read_chunk_list { | |
63 | (root; $name: expr, $fname: ident, $handlers: ident) => { | |
64 | fn $fname(&mut self, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<()> { | |
65 | self.depth += 1; | |
66 | validate!(self.depth < 32); | |
67 | let list_end = self.src.tell() + size; | |
68 | while self.src.tell() < list_end { | |
69 | let ret = read_chunk_header(&mut self.src); | |
70 | if ret.is_err() { break; } | |
71 | let (ctype, size) = ret.unwrap(); | |
72 | if self.src.tell() + size > list_end { | |
73 | break; | |
74 | } | |
75 | if IGNORED_CHUNKS.contains(&ctype) { | |
76 | self.src.skip64(size)?; | |
77 | continue; | |
78 | } | |
79 | let handler = $handlers.iter().find(|x| x.ctype == ctype); | |
80 | let read_size; | |
81 | if let Some(ref handler) = handler { | |
82 | read_size = (handler.parse)(self, strmgr, size)?; | |
83 | } else { | |
84 | println!("skipping unknown chunk {:08X} size {}", ctype, size); | |
85 | read_size = 0; | |
86 | } | |
87 | validate!(read_size <= size); | |
88 | self.src.skip64(size - read_size)?; | |
89 | } | |
90 | self.depth -= 1; | |
91 | validate!(self.src.tell() == list_end); | |
92 | Ok(()) | |
93 | } | |
94 | }; | |
95 | (track; $name: expr, $fname: ident, $handlers: ident) => { | |
96 | fn $fname(&mut self, br: &mut ByteReader, size: u64) -> DemuxerResult<()> { | |
97 | self.depth += 1; | |
98 | validate!(self.depth < 32); | |
99 | let list_end = br.tell() + size; | |
100 | while br.tell() < list_end { | |
101 | let ret = read_chunk_header(br); | |
102 | if ret.is_err() { break; } | |
103 | let (ctype, size) = ret.unwrap(); | |
104 | if br.tell() + size > list_end { | |
105 | break; | |
106 | } | |
107 | if IGNORED_CHUNKS.contains(&ctype) { | |
108 | br.skip64(size)?; | |
109 | continue; | |
110 | } | |
111 | let handler = $handlers.iter().find(|x| x.ctype == ctype); | |
112 | let read_size; | |
113 | if let Some(ref handler) = handler { | |
114 | read_size = (handler.parse)(self, br, size)?; | |
115 | } else { | |
116 | read_size = 0; | |
117 | } | |
118 | validate!(read_size <= size); | |
119 | br.skip64(size - read_size)?; | |
120 | } | |
121 | self.depth -= 1; | |
122 | validate!(br.tell() == list_end); | |
123 | Ok(()) | |
124 | } | |
125 | } | |
126 | } | |
127 | ||
128 | fn skip_chunk(_track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
129 | br.skip64(size)?; | |
130 | Ok(size) | |
131 | } | |
132 | ||
133 | fn read_mdat(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> { | |
134 | dmx.mdat_pos = dmx.src.tell(); | |
135 | dmx.mdat_size = size; | |
136 | dmx.src.skip64(size)?; | |
137 | Ok(size) | |
138 | } | |
139 | ||
140 | fn read_moov(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> { | |
141 | dmx.read_moov(strmgr, size)?; | |
142 | Ok(size) | |
143 | } | |
144 | ||
145 | const MOOV_CHUNK_HANDLERS: &[RootChunkHandler] = &[ | |
146 | RootChunkHandler { ctype: mktag!(b"mvhd"), parse: read_mvhd }, | |
147 | RootChunkHandler { ctype: mktag!(b"trak"), parse: read_trak }, | |
148 | ]; | |
149 | ||
150 | fn read_mvhd(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> { | |
151 | const KNOWN_MVHD_SIZE: u64 = 100; | |
152 | let br = &mut dmx.src; | |
153 | validate!(size >= KNOWN_MVHD_SIZE); | |
154 | let version = br.read_byte()?; | |
155 | validate!(version == 0); | |
156 | let _flags = br.read_u24be()?; | |
157 | let _ctime = br.read_u32be()?; | |
158 | let _mtime = br.read_u32be()?; | |
159 | let tscale = br.read_u32be()?; | |
160 | let duration = br.read_u32be()?; | |
161 | let _pref_rate = br.read_u32be()?; | |
162 | let _pref_volume = br.read_u16be()?; | |
163 | br.read_skip(10)?; | |
164 | br.read_skip(36)?; // matrix | |
165 | let _preview_time = br.read_u32be()?; | |
166 | let _preview_duration = br.read_u32be()?; | |
167 | let _poster_time = br.read_u32be()?; | |
168 | let _sel_time = br.read_u32be()?; | |
169 | let _sel_duration = br.read_u32be()?; | |
170 | let _cur_time = br.read_u32be()?; | |
171 | let _next_track_id = br.read_u32be()?; | |
172 | dmx.duration = duration; | |
173 | dmx.tb_den = tscale; | |
174 | ||
175 | Ok(KNOWN_MVHD_SIZE) | |
176 | } | |
177 | ||
178 | fn read_trak(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> { | |
179 | let mut track = Track::new(dmx.cur_track as u32, dmx.tb_den); | |
180 | track.read_trak(&mut dmx.src, size)?; | |
181 | validate!(track.tkhd_found && track.stsd_found); | |
182 | validate!(strmgr.get_stream_by_id(track.track_id).is_none()); | |
183 | dmx.cur_track += 1; | |
184 | let mut str = None; | |
185 | std::mem::swap(&mut track.stream, &mut str); | |
186 | if let Some(stream) = str { | |
187 | let str_id = strmgr.add_stream(stream).unwrap(); | |
188 | track.track_str_id = str_id; | |
189 | } | |
190 | dmx.tracks.push(track); | |
191 | Ok(size) | |
192 | } | |
193 | ||
194 | const TRAK_CHUNK_HANDLERS: &[TrackChunkHandler] = &[ | |
195 | TrackChunkHandler { ctype: mktag!(b"clip"), parse: skip_chunk }, | |
196 | TrackChunkHandler { ctype: mktag!(b"matt"), parse: skip_chunk }, | |
197 | TrackChunkHandler { ctype: mktag!(b"edts"), parse: skip_chunk }, | |
198 | TrackChunkHandler { ctype: mktag!(b"tref"), parse: skip_chunk }, | |
199 | TrackChunkHandler { ctype: mktag!(b"load"), parse: skip_chunk }, | |
200 | TrackChunkHandler { ctype: mktag!(b"imap"), parse: skip_chunk }, | |
201 | TrackChunkHandler { ctype: mktag!(b"tkhd"), parse: read_tkhd }, | |
202 | TrackChunkHandler { ctype: mktag!(b"mdia"), parse: read_mdia }, | |
203 | ]; | |
204 | ||
205 | fn read_tkhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
206 | const KNOWN_TKHD_SIZE: u64 = 84; | |
207 | validate!(size >= KNOWN_TKHD_SIZE); | |
208 | let version = br.read_byte()?; | |
209 | validate!(version == 0); | |
210 | let _flags = br.read_u24be()?; | |
211 | let _ctime = br.read_u32be()?; | |
212 | let _mtime = br.read_u32be()?; | |
213 | let track_id = br.read_u32be()?; | |
214 | br.read_skip(4)?; | |
215 | let _duration = br.read_u32be()?; | |
216 | br.read_skip(8)?; | |
217 | let _layer = br.read_u16be()?; | |
218 | let _alt_group = br.read_u16be()?; | |
219 | let _volume = br.read_u16be()?; | |
220 | br.read_skip(2)?; | |
221 | br.read_skip(36)?; // matrix | |
222 | let width = br.read_u32be()? as usize; | |
223 | let height = br.read_u32be()? as usize; | |
224 | track.width = width >> 16; | |
225 | track.height = height >> 16; | |
226 | track.track_id = track_id; | |
227 | ||
228 | track.tkhd_found = true; | |
229 | Ok(KNOWN_TKHD_SIZE) | |
230 | } | |
231 | ||
232 | fn read_mdia(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
233 | track.stream_type = StreamType::None; | |
234 | track.read_mdia(br, size)?; | |
235 | Ok(size) | |
236 | } | |
237 | ||
238 | const MDIA_CHUNK_HANDLERS: &[TrackChunkHandler] = &[ | |
239 | TrackChunkHandler { ctype: mktag!(b"mdhd"), parse: skip_chunk }, | |
240 | TrackChunkHandler { ctype: mktag!(b"hdlr"), parse: read_hdlr }, | |
241 | TrackChunkHandler { ctype: mktag!(b"minf"), parse: read_minf }, | |
242 | ]; | |
243 | ||
244 | fn read_hdlr(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
245 | const KNOWN_HDLR_SIZE: u64 = 24; | |
246 | validate!(size >= KNOWN_HDLR_SIZE); | |
247 | let version = br.read_byte()?; | |
248 | validate!(version == 0); | |
249 | let flags = br.read_u24be()?; | |
250 | validate!(flags == 0); | |
251 | let comp_type = br.read_u32be()?; | |
252 | let comp_subtype = br.read_u32be()?; | |
253 | let _comp_manufacturer = br.read_u32be()?; | |
254 | let _comp_flags = br.read_u32be()?; | |
255 | let _comp_flags_mask = br.read_u32be()?; | |
256 | ||
257 | if comp_type == mktag!(b"mhlr") { | |
258 | if comp_subtype == mktag!(b"vide") { | |
259 | track.stream_type = StreamType::Video; | |
260 | } else if comp_subtype == mktag!(b"soun") { | |
261 | track.stream_type = StreamType::Audio; | |
262 | } else { | |
263 | track.stream_type = StreamType::Data; | |
264 | } | |
265 | } else if comp_type == mktag!(b"dhlr") { | |
266 | track.stream_type = StreamType::Data; | |
267 | } else { | |
268 | println!("Unknown stream type"); | |
269 | track.stream_type = StreamType::Data; | |
270 | } | |
271 | ||
272 | Ok(KNOWN_HDLR_SIZE) | |
273 | } | |
274 | ||
275 | fn read_minf(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
276 | track.read_minf(br, size)?; | |
277 | Ok(size) | |
278 | } | |
279 | ||
280 | const MINF_CHUNK_HANDLERS: &[TrackChunkHandler] = &[ | |
281 | TrackChunkHandler { ctype: mktag!(b"hdlr"), parse: skip_chunk }, | |
282 | TrackChunkHandler { ctype: mktag!(b"dinf"), parse: skip_chunk }, | |
283 | TrackChunkHandler { ctype: mktag!(b"vmhd"), parse: read_vmhd }, | |
284 | TrackChunkHandler { ctype: mktag!(b"smhd"), parse: read_smhd }, | |
285 | TrackChunkHandler { ctype: mktag!(b"gmhd"), parse: read_gmhd }, | |
286 | TrackChunkHandler { ctype: mktag!(b"gmin"), parse: read_gmin }, | |
287 | TrackChunkHandler { ctype: mktag!(b"stbl"), parse: read_stbl }, | |
288 | ]; | |
289 | ||
290 | fn read_vmhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
291 | const KNOWN_VMHD_SIZE: u64 = 12; | |
292 | validate!(track.stream_type == StreamType::Video); | |
293 | validate!(size >= KNOWN_VMHD_SIZE); | |
294 | let version = br.read_byte()?; | |
295 | validate!(version == 0); | |
296 | let _flags = br.read_u24be()?; | |
297 | br.read_skip(2)?; // graphics mode | |
298 | br.read_skip(6)?; // opcolor | |
299 | Ok(KNOWN_VMHD_SIZE) | |
300 | } | |
301 | ||
302 | fn read_smhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
303 | const KNOWN_SMHD_SIZE: u64 = 8; | |
304 | validate!(track.stream_type == StreamType::Audio); | |
305 | validate!(size >= KNOWN_SMHD_SIZE); | |
306 | let version = br.read_byte()?; | |
307 | validate!(version == 0); | |
308 | let _flags = br.read_u24be()?; | |
309 | br.read_skip(2)?; // balance | |
310 | br.read_skip(2)?; | |
311 | Ok(KNOWN_SMHD_SIZE) | |
312 | } | |
313 | ||
314 | fn read_gmhd(track: &mut Track, _br: &mut ByteReader, _size: u64) -> DemuxerResult<u64> { | |
315 | validate!(track.stream_type == StreamType::Data); | |
316 | Ok(0) | |
317 | } | |
318 | ||
319 | fn read_gmin(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
320 | validate!(track.stream_type == StreamType::Data); | |
321 | const KNOWN_GMIN_SIZE: u64 = 16; | |
322 | validate!(size >= KNOWN_GMIN_SIZE); | |
323 | let version = br.read_byte()?; | |
324 | validate!(version == 0); | |
325 | let _flags = br.read_u24be()?; | |
326 | br.read_skip(2)?; // graphics mode | |
327 | br.read_skip(6)?; // opcolor | |
328 | br.read_skip(2)?; // balance | |
329 | br.read_skip(2)?; | |
330 | Ok(KNOWN_GMIN_SIZE) | |
331 | } | |
332 | ||
333 | fn read_stbl(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
334 | track.read_stbl(br, size)?; | |
335 | Ok(size) | |
336 | } | |
337 | ||
338 | const STBL_CHUNK_HANDLERS: &[TrackChunkHandler] = &[ | |
339 | TrackChunkHandler { ctype: mktag!(b"stsd"), parse: read_stsd }, | |
340 | TrackChunkHandler { ctype: mktag!(b"stts"), parse: skip_chunk }, | |
341 | TrackChunkHandler { ctype: mktag!(b"stss"), parse: read_stss }, | |
342 | TrackChunkHandler { ctype: mktag!(b"stsc"), parse: read_stsc }, | |
343 | TrackChunkHandler { ctype: mktag!(b"stsz"), parse: read_stsz }, | |
344 | TrackChunkHandler { ctype: mktag!(b"stco"), parse: read_stco }, | |
345 | TrackChunkHandler { ctype: mktag!(b"stsh"), parse: skip_chunk }, | |
346 | ]; | |
347 | ||
348 | fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
349 | const KNOWN_STSD_SIZE: u64 = 24; | |
350 | validate!(size >= KNOWN_STSD_SIZE); | |
351 | let start_pos = br.tell(); | |
352 | let version = br.read_byte()?; | |
353 | validate!(version == 0); | |
354 | let _flags = br.read_u24be()?; | |
355 | let entries = br.read_u32be()?; | |
356 | validate!(entries > 0); | |
357 | let esize = br.read_u32be()? as u64; | |
358 | validate!(esize + 8 <= size); | |
359 | let mut fcc = [0u8; 4]; | |
360 | br.read_buf(&mut fcc)?; | |
361 | br.read_skip(6)?; | |
362 | let _data_ref = br.read_u16be()?; | |
363 | ||
364 | track.fcc = fcc; | |
365 | ||
366 | let codec_info; | |
367 | match track.stream_type { | |
368 | StreamType::Video => { | |
369 | let _ver = br.read_u16be()?; | |
370 | let _revision = br.read_u16le()?; | |
371 | let _vendor = br.read_u32be()?; | |
372 | let _temp_quality = br.read_u32be()?; | |
373 | let _spat_quality = br.read_u32be()?; | |
374 | let width = br.read_u16be()? as usize; | |
375 | let height = br.read_u16be()? as usize; | |
376 | let _hor_res = br.read_u32be()?; | |
377 | let _vert_res = br.read_u32be()?; | |
378 | let data_size = br.read_u32be()?; | |
379 | validate!(data_size == 0); | |
380 | let _frame_count = br.read_u16be()? as usize; | |
381 | let _cname_len = br.read_byte()? as usize; | |
382 | br.read_skip(31)?; // actual compressor name | |
383 | let depth = br.read_u16be()?; | |
384 | let ctable_id = br.read_u16be()?; | |
385 | validate!((depth <= 8) || (ctable_id == 0xFFFF)); | |
386 | if ctable_id == 0 { | |
387 | unimplemented!(); | |
388 | } | |
389 | // todo other atoms, put as extradata | |
390 | let cname = if let Some(name) = find_codec_from_mov_video_fourcc(&fcc) { | |
391 | name | |
392 | } else if let Some(name) = find_codec_from_avi_fourcc(&fcc) { | |
393 | name | |
394 | } else { | |
395 | "unknown" | |
396 | }; | |
397 | let format = if depth > 8 { RGB24_FORMAT } else { PAL8_FORMAT }; | |
398 | let vhdr = NAVideoInfo::new(width, height, false, format); | |
399 | let edata; | |
400 | if br.tell() - start_pos + 4 < size { | |
401 | //todo skip various common atoms | |
402 | let edata_size = br.read_u32be()? as usize; | |
403 | let mut buf = vec![0; edata_size]; | |
404 | br.read_buf(buf.as_mut_slice())?; | |
405 | edata = Some(buf); | |
406 | } else { | |
407 | edata = None; | |
408 | } | |
409 | codec_info = NACodecInfo::new(cname, NACodecTypeInfo::Video(vhdr), edata); | |
410 | }, | |
411 | StreamType::Audio => { | |
412 | let _ver = br.read_u16be()?; | |
413 | let _revision = br.read_u16le()?; | |
414 | let _vendor = br.read_u32be()?; | |
415 | let nchannels = br.read_u16be()?; | |
416 | validate!(nchannels <= 64); | |
417 | let sample_size = br.read_u16be()?; | |
418 | validate!(sample_size <= 128); | |
419 | let _compr_id = br.read_u16be()?; | |
420 | let packet_size = br.read_u16be()? as usize; | |
421 | validate!(packet_size == 0); | |
422 | let sample_rate = br.read_u32be()?; | |
423 | validate!(sample_rate > 0); | |
424 | let cname = if let Some(name) = find_codec_from_mov_audio_fourcc(&fcc) { | |
425 | name | |
426 | } else if let (true, Some(name)) = ((fcc[0] == b'm' && fcc[1] == b's'), find_codec_from_wav_twocc(u16::from(fcc[2]) * 256 + u16::from(fcc[3]))) { | |
427 | name | |
428 | } else { | |
429 | "unknown" | |
430 | }; | |
431 | //todo adjust format for various PCM kinds | |
432 | let soniton = NASoniton::new(sample_size as u8, SONITON_FLAG_SIGNED | SONITON_FLAG_BE); | |
433 | let block_align = 1; | |
434 | let ahdr = NAAudioInfo::new(sample_rate >> 16, nchannels as u8, soniton, block_align); | |
435 | let edata = None; | |
436 | codec_info = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata); | |
437 | track.channels = nchannels as usize; | |
438 | track.bits = sample_size as usize; | |
439 | }, | |
440 | StreamType::None => { | |
441 | return Err(DemuxerError::InvalidData); | |
442 | }, | |
443 | _ => { | |
444 | //todo put it all into extradata | |
445 | let edata = None; | |
446 | codec_info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata); | |
447 | }, | |
448 | }; | |
449 | let read_size = br.tell() - start_pos; | |
450 | validate!(read_size <= size); | |
451 | track.stream = Some(NAStream::new(track.stream_type, track.track_no, codec_info, 1, track.tb_den)); | |
452 | track.stsd_found = true; | |
453 | Ok(read_size) | |
454 | } | |
455 | ||
456 | fn read_stss(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
457 | let version = br.read_byte()?; | |
458 | validate!(version == 0); | |
459 | let _flags = br.read_u24be()?; | |
460 | let entries = br.read_u32be()? as usize; | |
461 | validate!(entries < ((std::u32::MAX >> 2) - 8) as usize); | |
462 | validate!((entries * 4 + 8) as u64 == size); | |
463 | track.keyframes = Vec::with_capacity(entries); | |
464 | let mut last_sample_no = 0; | |
465 | for _ in 0..entries { | |
466 | let sample_no = br.read_u32be()?; | |
467 | validate!(sample_no > last_sample_no); | |
468 | track.keyframes.push(sample_no); | |
469 | last_sample_no = sample_no; | |
470 | } | |
471 | Ok(size) | |
472 | } | |
473 | ||
474 | fn read_stsc(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
475 | let version = br.read_byte()?; | |
476 | validate!(version == 0); | |
477 | let _flags = br.read_u24be()?; | |
478 | let entries = br.read_u32be()? as usize; | |
479 | validate!(entries < ((std::u32::MAX / 12) - 8) as usize); | |
480 | validate!((entries * 12 + 8) as u64 == size); | |
481 | track.sample_map = Vec::with_capacity(entries); | |
482 | let mut last_sample_no = 0; | |
483 | for _i in 0..entries { | |
484 | let sample_no = br.read_u32be()?; | |
485 | validate!(sample_no > last_sample_no); | |
486 | let nsamples = br.read_u32be()?; | |
487 | let _sample_desc = br.read_u32be()?; | |
488 | track.sample_map.push((sample_no, nsamples)); | |
489 | last_sample_no = sample_no; | |
490 | } | |
491 | Ok(size) | |
492 | } | |
493 | ||
494 | fn read_stsz(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
495 | let version = br.read_byte()?; | |
496 | validate!(version == 0); | |
497 | let _flags = br.read_u24be()?; | |
498 | let sample_size = br.read_u32be()?; | |
499 | if sample_size != 0 { | |
500 | track.sample_size = sample_size; | |
501 | Ok(8) | |
502 | } else { | |
503 | let entries = br.read_u32be()? as usize; | |
504 | validate!((entries * 4 + 12) as u64 == size); | |
505 | track.chunk_sizes = Vec::with_capacity(entries); | |
506 | for _ in 0..entries { | |
507 | let sample_size = br.read_u32be()?; | |
508 | track.chunk_sizes.push(sample_size); | |
509 | } | |
510 | Ok(size) | |
511 | } | |
512 | } | |
513 | ||
514 | fn read_stco(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> { | |
515 | let version = br.read_byte()?; | |
516 | validate!(version == 0); | |
517 | let _flags = br.read_u24be()?; | |
518 | let entries = br.read_u32be()? as usize; | |
519 | validate!((entries * 4 + 8) as u64 == size); | |
520 | track.chunk_offsets = Vec::with_capacity(entries); | |
521 | for _i in 0..entries { | |
522 | let sample_offset = br.read_u32be()?; | |
523 | track.chunk_offsets.push(u64::from(sample_offset)); | |
524 | } | |
525 | Ok(size) | |
526 | } | |
527 | ||
528 | struct MOVDemuxer<'a> { | |
529 | src: &'a mut ByteReader<'a>, | |
530 | depth: usize, | |
531 | mdat_pos: u64, | |
532 | mdat_size: u64, | |
533 | tracks: Vec<Track>, | |
534 | cur_track: usize, | |
535 | tb_den: u32, | |
536 | duration: u32, | |
537 | } | |
538 | ||
539 | struct Track { | |
540 | track_id: u32, | |
541 | track_str_id: usize, | |
542 | track_no: u32, | |
543 | tb_den: u32, | |
544 | depth: u8, | |
545 | tkhd_found: bool, | |
546 | stsd_found: bool, | |
547 | stream_type: StreamType, | |
548 | width: usize, | |
549 | height: usize, | |
550 | channels: usize, | |
551 | bits: usize, | |
552 | fcc: [u8; 4], | |
553 | keyframes: Vec<u32>, | |
554 | chunk_sizes: Vec<u32>, | |
555 | chunk_offsets: Vec<u64>, | |
556 | sample_map: Vec<(u32, u32)>, | |
557 | sample_size: u32, | |
558 | stream: Option<NAStream>, | |
559 | cur_chunk: usize, | |
560 | cur_sample: usize, | |
561 | samples_left: usize, | |
562 | last_offset: u64, | |
563 | } | |
564 | ||
565 | impl Track { | |
566 | fn new(track_no: u32, tb_den: u32) -> Self { | |
567 | Self { | |
568 | tkhd_found: false, | |
569 | stsd_found: false, | |
570 | track_id: 0, | |
571 | track_str_id: 0, | |
572 | track_no, | |
573 | tb_den, | |
574 | stream_type: StreamType::None, | |
575 | width: 0, | |
576 | height: 0, | |
577 | channels: 0, | |
578 | bits: 0, | |
579 | fcc: [0; 4], | |
580 | keyframes: Vec::new(), | |
581 | chunk_sizes: Vec::new(), | |
582 | chunk_offsets: Vec::new(), | |
583 | sample_map: Vec::new(), | |
584 | sample_size: 0, | |
585 | stream: None, | |
586 | depth: 0, | |
587 | cur_chunk: 0, | |
588 | cur_sample: 0, | |
589 | samples_left: 0, | |
590 | last_offset: 0, | |
591 | } | |
592 | } | |
593 | read_chunk_list!(track; "trak", read_trak, TRAK_CHUNK_HANDLERS); | |
594 | read_chunk_list!(track; "mdia", read_mdia, MDIA_CHUNK_HANDLERS); | |
595 | read_chunk_list!(track; "minf", read_minf, MINF_CHUNK_HANDLERS); | |
596 | read_chunk_list!(track; "stbl", read_stbl, STBL_CHUNK_HANDLERS); | |
597 | fn fill_seek_index(&self, seek_index: &mut SeekIndex) { | |
598 | if self.keyframes.len() > 0 { | |
599 | seek_index.mode = SeekIndexMode::Present; | |
600 | } | |
601 | for kf_time in self.keyframes.iter() { | |
602 | let pts = u64::from(*kf_time - 1); | |
603 | let time = NATimeInfo::ts_to_time(pts, 1000, 1, self.tb_den); | |
604 | let idx = (*kf_time - 1) as usize; | |
605 | if idx < self.chunk_offsets.len() { | |
606 | let pos = self.chunk_offsets[idx]; | |
607 | seek_index.add_entry(self.track_no as u32, SeekEntry { time, pts, pos }); | |
608 | } | |
609 | } | |
610 | } | |
611 | fn calculate_chunk_size(&self, nsamp: usize) -> usize { | |
612 | if nsamp == 0 { | |
613 | self.sample_size as usize | |
614 | } else { | |
615 | match &self.fcc { | |
616 | b"NONE" | b"raw " | b"twos" | b"sowt" => { | |
617 | (nsamp * self.bits * self.channels + 7) >> 3 | |
618 | }, | |
619 | b"ima4" => { | |
620 | let nblocks = (nsamp + 63) >> 6; | |
621 | nblocks * 34 * self.channels | |
622 | }, | |
623 | b"MAC3" => { | |
624 | (nsamp + 5) / 6 * 2 * self.channels | |
625 | }, | |
626 | b"MAC6" => { | |
627 | (nsamp + 5) / 6 * self.channels | |
628 | }, | |
629 | b"in24" => nsamp * 3 * self.channels, | |
630 | b"in32" | b"fl32" => nsamp * 4 * self.channels, | |
631 | b"fl64" => nsamp * 8 * self.channels, | |
632 | b"ulaw" | b"alaw" => nsamp, | |
633 | b"ms\x00\x02" => { //MS ADPCM | |
634 | ((nsamp - 1) / 2 + 7) * self.channels | |
635 | }, | |
636 | b"ms\x00\x21" => { //IMA ADPCM | |
637 | (nsamp / 2 + 4) * self.channels | |
638 | }, | |
639 | _ => self.sample_size as usize, | |
640 | } | |
641 | } | |
642 | } | |
643 | fn get_next_chunk(&mut self) -> Option<(NATimeInfo, u64, usize)> { | |
644 | let pts = NATimeInfo::new(Some(self.cur_sample as u64), None, None, 1, self.tb_den); | |
645 | //todo dts decoding | |
646 | if self.chunk_offsets.len() == self.chunk_sizes.len() { // simple one-to-one mapping | |
647 | if self.cur_sample >= self.chunk_sizes.len() { | |
648 | return None; | |
649 | } | |
650 | let offset = self.chunk_offsets[self.cur_sample]; | |
651 | let size = self.chunk_sizes[self.cur_sample] as usize; | |
652 | self.cur_sample += 1; | |
653 | Some((pts, offset, size)) | |
654 | } else { | |
655 | if self.samples_left == 0 { | |
656 | if self.cur_chunk >= self.chunk_offsets.len() { | |
657 | return None; | |
658 | } | |
659 | for (idx, samples) in self.sample_map.iter() { | |
660 | if *idx as usize <= self.cur_chunk + 1 { | |
661 | self.samples_left = *samples as usize; | |
662 | } else { | |
663 | break; | |
664 | } | |
665 | } | |
666 | self.last_offset = self.chunk_offsets[self.cur_chunk]; | |
667 | self.cur_chunk += 1; | |
668 | } | |
669 | let offset = self.last_offset; | |
670 | let size = self.get_size(self.cur_sample); | |
671 | self.last_offset += size as u64; | |
672 | if self.stream_type == StreamType::Video { | |
673 | self.samples_left -= 1; | |
674 | } else { | |
675 | self.samples_left = 0; | |
676 | } | |
677 | self.cur_sample += 1; | |
678 | Some((pts, offset, size)) | |
679 | } | |
680 | } | |
681 | fn get_size(&self, sample_no: usize) -> usize { | |
682 | if self.chunk_sizes.len() > 0 { | |
683 | self.chunk_sizes[sample_no] as usize | |
684 | } else if self.sample_map.len() > 0 { | |
685 | let mut nsamp = 0; | |
686 | for (idx, samples) in self.sample_map.iter() { | |
687 | if *idx as usize <= self.cur_chunk { | |
688 | nsamp = *samples; | |
689 | } else { | |
690 | break; | |
691 | } | |
692 | } | |
693 | self.calculate_chunk_size(nsamp as usize) | |
694 | } else { | |
695 | self.sample_size as usize | |
696 | } | |
697 | } | |
698 | fn seek(&mut self, pts: u64) { | |
699 | self.cur_sample = pts as usize; | |
700 | self.samples_left = 0; | |
701 | if self.stream_type == StreamType::Audio { | |
702 | self.cur_chunk = self.cur_sample; | |
703 | } else if self.chunk_offsets.len() != self.chunk_sizes.len() && self.sample_map.len() > 0{ | |
704 | let mut csamp = 0; | |
705 | self.cur_chunk = 0; | |
706 | let mut cmap = self.sample_map.iter(); | |
707 | let mut cur_samps = 0; | |
708 | let (mut next_idx, mut next_samples) = cmap.next().unwrap(); | |
709 | loop { | |
710 | if self.cur_chunk == next_idx as usize { | |
711 | self.samples_left = cur_samps; | |
712 | cur_samps = next_samples as usize; | |
713 | if let Some((new_idx, new_samples)) = cmap.next() { | |
714 | next_idx = *new_idx; | |
715 | next_samples = *new_samples; | |
716 | } | |
717 | } | |
718 | csamp += cur_samps; | |
719 | if csamp >= self.cur_sample { | |
720 | self.last_offset = self.chunk_offsets[self.cur_chunk]; | |
721 | break; | |
722 | } | |
723 | self.cur_chunk += 1; | |
724 | } | |
725 | csamp -= cur_samps; | |
726 | for sample_no in csamp..self.cur_chunk { | |
727 | self.last_offset += self.get_size(sample_no) as u64; | |
728 | } | |
729 | self.samples_left = self.cur_sample - csamp - cur_samps; | |
730 | } | |
731 | } | |
732 | } | |
733 | ||
734 | impl<'a> DemuxCore<'a> for MOVDemuxer<'a> { | |
735 | fn open(&mut self, strmgr: &mut StreamManager, seek_index: &mut SeekIndex) -> DemuxerResult<()> { | |
736 | self.read_root(strmgr)?; | |
737 | validate!(self.mdat_pos > 0); | |
738 | validate!(self.tracks.len() > 0); | |
739 | for track in self.tracks.iter() { | |
740 | track.fill_seek_index(seek_index); | |
741 | } | |
742 | self.src.seek(SeekFrom::Start(self.mdat_pos))?; | |
743 | self.cur_track = 0; | |
744 | Ok(()) | |
745 | } | |
746 | ||
747 | fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> { | |
748 | if self.tracks.len() == 0 { | |
749 | return Err(DemuxerError::EOF); | |
750 | } | |
751 | for _ in 0..self.tracks.len() { | |
752 | if self.cur_track >= self.tracks.len() { | |
753 | self.cur_track = 0; | |
754 | } | |
755 | let track = &mut self.tracks[self.cur_track]; | |
756 | self.cur_track += 1; | |
757 | if let Some((pts, offset, size)) = track.get_next_chunk() { | |
758 | let str = strmgr.get_stream(track.track_str_id); | |
759 | if str.is_none() { return Err(DemuxerError::InvalidData); } | |
760 | let stream = str.unwrap(); | |
761 | self.src.seek(SeekFrom::Start(offset))?; | |
762 | let pkt = self.src.read_packet(stream, pts, false, size)?; | |
763 | return Ok(pkt); | |
764 | } | |
765 | } | |
766 | return Err(DemuxerError::EOF); | |
767 | } | |
768 | ||
769 | fn seek(&mut self, time: u64, seek_index: &SeekIndex) -> DemuxerResult<()> { | |
770 | let ret = seek_index.find_pos(time); | |
771 | if ret.is_none() { | |
772 | return Err(DemuxerError::SeekError); | |
773 | } | |
774 | let seek_info = ret.unwrap(); | |
775 | for track in self.tracks.iter_mut() { | |
776 | track.seek(seek_info.pts); | |
777 | } | |
778 | Ok(()) | |
779 | } | |
780 | } | |
781 | ||
782 | impl<'a> MOVDemuxer<'a> { | |
783 | fn new(io: &'a mut ByteReader<'a>) -> Self { | |
784 | MOVDemuxer { | |
785 | src: io, | |
786 | depth: 0, | |
787 | mdat_pos: 0, | |
788 | mdat_size: 0, | |
789 | tracks: Vec::with_capacity(2), | |
790 | cur_track: 0, | |
791 | tb_den: 0, | |
792 | duration: 0, | |
793 | } | |
794 | } | |
795 | fn read_root(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> { | |
796 | self.depth = 0; | |
797 | while self.src.left() != 0 { | |
798 | let ret = read_chunk_header(&mut self.src); | |
799 | if ret.is_err() { break; } | |
800 | let (ctype, size) = ret.unwrap(); | |
801 | if IGNORED_CHUNKS.contains(&ctype) { | |
802 | self.src.skip64(size)?; | |
803 | continue; | |
804 | } | |
805 | let handler = ROOT_CHUNK_HANDLERS.iter().find(|x| x.ctype == ctype); | |
806 | let read_size; | |
807 | if let Some(ref handler) = handler { | |
808 | read_size = (handler.parse)(self, strmgr, size)?; | |
809 | } else { | |
810 | println!("skipping unknown chunk {:08X} size {}", ctype, size); | |
811 | read_size = 0; | |
812 | } | |
813 | validate!(read_size <= size); | |
814 | self.src.skip64(size - read_size)?; | |
815 | } | |
816 | //todo check if all needed chunks are found | |
817 | Ok(()) | |
818 | } | |
819 | read_chunk_list!(root; "moov", read_moov, MOOV_CHUNK_HANDLERS); | |
820 | } | |
821 | ||
822 | pub struct MOVDemuxerCreator { } | |
823 | ||
824 | impl DemuxerCreator for MOVDemuxerCreator { | |
825 | fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> { | |
826 | Box::new(MOVDemuxer::new(br)) | |
827 | } | |
828 | fn get_name(&self) -> &'static str { "mov" } | |
829 | } | |
830 | ||
831 | #[cfg(test)] | |
832 | mod test { | |
833 | use super::*; | |
834 | use std::fs::File; | |
835 | ||
836 | #[test] | |
837 | fn test_mov_demux() { | |
838 | let mut file = File::open("assets/Indeo/cubes.mov").unwrap(); | |
839 | let mut fr = FileReader::new_read(&mut file); | |
840 | let mut br = ByteReader::new(&mut fr); | |
841 | let mut dmx = MOVDemuxer::new(&mut br); | |
842 | let mut sm = StreamManager::new(); | |
843 | let mut si = SeekIndex::new(); | |
844 | dmx.open(&mut sm, &mut si).unwrap(); | |
845 | ||
846 | loop { | |
847 | let pktres = dmx.get_frame(&mut sm); | |
848 | if let Err(e) = pktres { | |
849 | if e == DemuxerError::EOF { break; } | |
850 | panic!("error"); | |
851 | } | |
852 | let pkt = pktres.unwrap(); | |
853 | println!("Got {}", pkt); | |
854 | } | |
855 | } | |
856 | } |