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make muxers handle options
[nihav.git] / nihav-commonfmt / src / demuxers / mov.rs
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1use nihav_core::demuxers::*;
2use nihav_registry::register::*;
3
4macro_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
13trait Skip64 {
14 fn skip64(&mut self, size: u64) -> ByteIOResult<()>;
15}
16
17impl<'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
28fn 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
58cd51fa 43fn read_palette(br: &mut ByteReader, size: u64, pal: &mut [u8; 1024]) -> DemuxerResult<u64> {
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44 let _seed = br.read_u32be()?;
45 let _flags = br.read_u16be()?;
46 let palsize = (br.read_u16be()? as usize) + 1;
47 validate!(palsize <= 256);
48 validate!((palsize as u64) * 8 + 8 == size);
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49 for i in 0..palsize {
50 let a = br.read_u16be()?;
51 let r = br.read_u16be()?;
52 let g = br.read_u16be()?;
53 let b = br.read_u16be()?;
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54 pal[i * 4] = (r >> 8) as u8;
55 pal[i * 4 + 1] = (g >> 8) as u8;
56 pal[i * 4 + 2] = (b >> 8) as u8;
57 pal[i * 4 + 3] = (a >> 8) as u8;
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58 }
59 Ok(size)
60}
61
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62struct RootChunkHandler {
63 ctype: u32,
64 parse: fn(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64>,
65}
66
67struct TrackChunkHandler {
68 ctype: u32,
69 parse: fn(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64>,
70}
71
72const IGNORED_CHUNKS: &[u32] = &[
73 mktag!(b"free"), mktag!(b"skip"), mktag!(b"udta"), mktag!(b"wide")
74];
75
76const ROOT_CHUNK_HANDLERS: &[RootChunkHandler] = &[
7e19285f 77 RootChunkHandler { ctype: mktag!(b"ftyp"), parse: read_ftyp },
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78 RootChunkHandler { ctype: mktag!(b"mdat"), parse: read_mdat },
79 RootChunkHandler { ctype: mktag!(b"moov"), parse: read_moov },
80];
81
82macro_rules! read_chunk_list {
83 (root; $name: expr, $fname: ident, $handlers: ident) => {
84 fn $fname(&mut self, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<()> {
85 self.depth += 1;
86 validate!(self.depth < 32);
87 let list_end = self.src.tell() + size;
88 while self.src.tell() < list_end {
89 let ret = read_chunk_header(&mut self.src);
90 if ret.is_err() { break; }
91 let (ctype, size) = ret.unwrap();
92 if self.src.tell() + size > list_end {
93 break;
94 }
95 if IGNORED_CHUNKS.contains(&ctype) {
96 self.src.skip64(size)?;
97 continue;
98 }
99 let handler = $handlers.iter().find(|x| x.ctype == ctype);
100 let read_size;
101 if let Some(ref handler) = handler {
102 read_size = (handler.parse)(self, strmgr, size)?;
103 } else {
104 println!("skipping unknown chunk {:08X} size {}", ctype, size);
105 read_size = 0;
106 }
107 validate!(read_size <= size);
108 self.src.skip64(size - read_size)?;
109 }
110 self.depth -= 1;
111 validate!(self.src.tell() == list_end);
112 Ok(())
113 }
114 };
115 (track; $name: expr, $fname: ident, $handlers: ident) => {
116 fn $fname(&mut self, br: &mut ByteReader, size: u64) -> DemuxerResult<()> {
117 self.depth += 1;
118 validate!(self.depth < 32);
119 let list_end = br.tell() + size;
120 while br.tell() < list_end {
121 let ret = read_chunk_header(br);
122 if ret.is_err() { break; }
123 let (ctype, size) = ret.unwrap();
124 if br.tell() + size > list_end {
125 break;
126 }
127 if IGNORED_CHUNKS.contains(&ctype) {
128 br.skip64(size)?;
129 continue;
130 }
131 let handler = $handlers.iter().find(|x| x.ctype == ctype);
132 let read_size;
133 if let Some(ref handler) = handler {
134 read_size = (handler.parse)(self, br, size)?;
135 } else {
136 read_size = 0;
137 }
138 validate!(read_size <= size);
139 br.skip64(size - read_size)?;
140 }
141 self.depth -= 1;
142 validate!(br.tell() == list_end);
143 Ok(())
144 }
145 }
146}
147
148fn skip_chunk(_track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
149 br.skip64(size)?;
150 Ok(size)
151}
152
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153fn read_ftyp(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
154 dmx.src.skip64(size)?;
155 Ok(size)
156}
157
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158fn read_mdat(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
159 dmx.mdat_pos = dmx.src.tell();
160 dmx.mdat_size = size;
161 dmx.src.skip64(size)?;
162 Ok(size)
163}
164
165fn read_moov(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
166 dmx.read_moov(strmgr, size)?;
167 Ok(size)
168}
169
170const MOOV_CHUNK_HANDLERS: &[RootChunkHandler] = &[
171 RootChunkHandler { ctype: mktag!(b"mvhd"), parse: read_mvhd },
00333698 172 RootChunkHandler { ctype: mktag!(b"ctab"), parse: read_ctab },
58309c73 173 RootChunkHandler { ctype: mktag!(b"trak"), parse: read_trak },
7e19285f 174 RootChunkHandler { ctype: mktag!(b"meta"), parse: read_meta },
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175];
176
177fn read_mvhd(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
178 const KNOWN_MVHD_SIZE: u64 = 100;
179 let br = &mut dmx.src;
180 validate!(size >= KNOWN_MVHD_SIZE);
181 let version = br.read_byte()?;
182 validate!(version == 0);
183 let _flags = br.read_u24be()?;
184 let _ctime = br.read_u32be()?;
185 let _mtime = br.read_u32be()?;
186 let tscale = br.read_u32be()?;
187 let duration = br.read_u32be()?;
188 let _pref_rate = br.read_u32be()?;
189 let _pref_volume = br.read_u16be()?;
190 br.read_skip(10)?;
191 br.read_skip(36)?; // matrix
192 let _preview_time = br.read_u32be()?;
193 let _preview_duration = br.read_u32be()?;
194 let _poster_time = br.read_u32be()?;
195 let _sel_time = br.read_u32be()?;
196 let _sel_duration = br.read_u32be()?;
197 let _cur_time = br.read_u32be()?;
198 let _next_track_id = br.read_u32be()?;
199 dmx.duration = duration;
200 dmx.tb_den = tscale;
201
202 Ok(KNOWN_MVHD_SIZE)
203}
204
00333698 205fn read_ctab(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
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206 let mut pal = [0; 1024];
207 let size = read_palette(&mut dmx.src, size, &mut pal)?;
208 dmx.pal = Some(Arc::new(pal));
209 Ok(size)
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210}
211
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212fn read_meta(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
213 dmx.src.skip64(size)?;
214 Ok(size)
215}
216
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217fn read_trak(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
218 let mut track = Track::new(dmx.cur_track as u32, dmx.tb_den);
219 track.read_trak(&mut dmx.src, size)?;
220 validate!(track.tkhd_found && track.stsd_found);
221 validate!(strmgr.get_stream_by_id(track.track_id).is_none());
222 dmx.cur_track += 1;
223 let mut str = None;
224 std::mem::swap(&mut track.stream, &mut str);
225 if let Some(stream) = str {
226 let str_id = strmgr.add_stream(stream).unwrap();
227 track.track_str_id = str_id;
228 }
229 dmx.tracks.push(track);
230 Ok(size)
231}
232
233const TRAK_CHUNK_HANDLERS: &[TrackChunkHandler] = &[
234 TrackChunkHandler { ctype: mktag!(b"clip"), parse: skip_chunk },
235 TrackChunkHandler { ctype: mktag!(b"matt"), parse: skip_chunk },
236 TrackChunkHandler { ctype: mktag!(b"edts"), parse: skip_chunk },
237 TrackChunkHandler { ctype: mktag!(b"tref"), parse: skip_chunk },
238 TrackChunkHandler { ctype: mktag!(b"load"), parse: skip_chunk },
239 TrackChunkHandler { ctype: mktag!(b"imap"), parse: skip_chunk },
240 TrackChunkHandler { ctype: mktag!(b"tkhd"), parse: read_tkhd },
241 TrackChunkHandler { ctype: mktag!(b"mdia"), parse: read_mdia },
242];
243
244fn read_tkhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
245 const KNOWN_TKHD_SIZE: u64 = 84;
246 validate!(size >= KNOWN_TKHD_SIZE);
247 let version = br.read_byte()?;
248 validate!(version == 0);
249 let _flags = br.read_u24be()?;
250 let _ctime = br.read_u32be()?;
251 let _mtime = br.read_u32be()?;
252 let track_id = br.read_u32be()?;
253 br.read_skip(4)?;
254 let _duration = br.read_u32be()?;
255 br.read_skip(8)?;
256 let _layer = br.read_u16be()?;
257 let _alt_group = br.read_u16be()?;
258 let _volume = br.read_u16be()?;
259 br.read_skip(2)?;
260 br.read_skip(36)?; // matrix
261 let width = br.read_u32be()? as usize;
262 let height = br.read_u32be()? as usize;
263 track.width = width >> 16;
264 track.height = height >> 16;
265 track.track_id = track_id;
266
267 track.tkhd_found = true;
268 Ok(KNOWN_TKHD_SIZE)
269}
270
271fn read_mdia(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
272 track.stream_type = StreamType::None;
273 track.read_mdia(br, size)?;
274 Ok(size)
275}
276
277const MDIA_CHUNK_HANDLERS: &[TrackChunkHandler] = &[
278 TrackChunkHandler { ctype: mktag!(b"mdhd"), parse: skip_chunk },
279 TrackChunkHandler { ctype: mktag!(b"hdlr"), parse: read_hdlr },
280 TrackChunkHandler { ctype: mktag!(b"minf"), parse: read_minf },
281];
282
283fn read_hdlr(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
284 const KNOWN_HDLR_SIZE: u64 = 24;
285 validate!(size >= KNOWN_HDLR_SIZE);
286 let version = br.read_byte()?;
287 validate!(version == 0);
288 let flags = br.read_u24be()?;
289 validate!(flags == 0);
290 let comp_type = br.read_u32be()?;
291 let comp_subtype = br.read_u32be()?;
292 let _comp_manufacturer = br.read_u32be()?;
293 let _comp_flags = br.read_u32be()?;
294 let _comp_flags_mask = br.read_u32be()?;
295
296 if comp_type == mktag!(b"mhlr") {
297 if comp_subtype == mktag!(b"vide") {
298 track.stream_type = StreamType::Video;
299 } else if comp_subtype == mktag!(b"soun") {
300 track.stream_type = StreamType::Audio;
301 } else {
302 track.stream_type = StreamType::Data;
303 }
304 } else if comp_type == mktag!(b"dhlr") {
305 track.stream_type = StreamType::Data;
306 } else {
307 println!("Unknown stream type");
308 track.stream_type = StreamType::Data;
309 }
310
311 Ok(KNOWN_HDLR_SIZE)
312}
313
314fn read_minf(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
315 track.read_minf(br, size)?;
316 Ok(size)
317}
318
319const MINF_CHUNK_HANDLERS: &[TrackChunkHandler] = &[
320 TrackChunkHandler { ctype: mktag!(b"hdlr"), parse: skip_chunk },
321 TrackChunkHandler { ctype: mktag!(b"dinf"), parse: skip_chunk },
322 TrackChunkHandler { ctype: mktag!(b"vmhd"), parse: read_vmhd },
323 TrackChunkHandler { ctype: mktag!(b"smhd"), parse: read_smhd },
324 TrackChunkHandler { ctype: mktag!(b"gmhd"), parse: read_gmhd },
325 TrackChunkHandler { ctype: mktag!(b"gmin"), parse: read_gmin },
326 TrackChunkHandler { ctype: mktag!(b"stbl"), parse: read_stbl },
327];
328
329fn read_vmhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
330 const KNOWN_VMHD_SIZE: u64 = 12;
331 validate!(track.stream_type == StreamType::Video);
332 validate!(size >= KNOWN_VMHD_SIZE);
333 let version = br.read_byte()?;
334 validate!(version == 0);
335 let _flags = br.read_u24be()?;
336 br.read_skip(2)?; // graphics mode
337 br.read_skip(6)?; // opcolor
338 Ok(KNOWN_VMHD_SIZE)
339}
340
341fn read_smhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
342 const KNOWN_SMHD_SIZE: u64 = 8;
343 validate!(track.stream_type == StreamType::Audio);
344 validate!(size >= KNOWN_SMHD_SIZE);
345 let version = br.read_byte()?;
346 validate!(version == 0);
347 let _flags = br.read_u24be()?;
348 br.read_skip(2)?; // balance
349 br.read_skip(2)?;
350 Ok(KNOWN_SMHD_SIZE)
351}
352
353fn read_gmhd(track: &mut Track, _br: &mut ByteReader, _size: u64) -> DemuxerResult<u64> {
354 validate!(track.stream_type == StreamType::Data);
355 Ok(0)
356}
357
358fn read_gmin(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
359 validate!(track.stream_type == StreamType::Data);
360 const KNOWN_GMIN_SIZE: u64 = 16;
361 validate!(size >= KNOWN_GMIN_SIZE);
362 let version = br.read_byte()?;
363 validate!(version == 0);
364 let _flags = br.read_u24be()?;
365 br.read_skip(2)?; // graphics mode
366 br.read_skip(6)?; // opcolor
367 br.read_skip(2)?; // balance
368 br.read_skip(2)?;
369 Ok(KNOWN_GMIN_SIZE)
370}
371
372fn read_stbl(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
373 track.read_stbl(br, size)?;
374 Ok(size)
375}
376
377const STBL_CHUNK_HANDLERS: &[TrackChunkHandler] = &[
378 TrackChunkHandler { ctype: mktag!(b"stsd"), parse: read_stsd },
379 TrackChunkHandler { ctype: mktag!(b"stts"), parse: skip_chunk },
380 TrackChunkHandler { ctype: mktag!(b"stss"), parse: read_stss },
381 TrackChunkHandler { ctype: mktag!(b"stsc"), parse: read_stsc },
382 TrackChunkHandler { ctype: mktag!(b"stsz"), parse: read_stsz },
383 TrackChunkHandler { ctype: mktag!(b"stco"), parse: read_stco },
384 TrackChunkHandler { ctype: mktag!(b"stsh"), parse: skip_chunk },
385];
386
387fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
388 const KNOWN_STSD_SIZE: u64 = 24;
389 validate!(size >= KNOWN_STSD_SIZE);
390 let start_pos = br.tell();
391 let version = br.read_byte()?;
392 validate!(version == 0);
393 let _flags = br.read_u24be()?;
394 let entries = br.read_u32be()?;
395 validate!(entries > 0);
396 let esize = br.read_u32be()? as u64;
397 validate!(esize + 8 <= size);
398 let mut fcc = [0u8; 4];
399 br.read_buf(&mut fcc)?;
400 br.read_skip(6)?;
401 let _data_ref = br.read_u16be()?;
402
403 track.fcc = fcc;
404
405 let codec_info;
406 match track.stream_type {
407 StreamType::Video => {
408 let _ver = br.read_u16be()?;
409 let _revision = br.read_u16le()?;
410 let _vendor = br.read_u32be()?;
411 let _temp_quality = br.read_u32be()?;
412 let _spat_quality = br.read_u32be()?;
413 let width = br.read_u16be()? as usize;
414 let height = br.read_u16be()? as usize;
415 let _hor_res = br.read_u32be()?;
416 let _vert_res = br.read_u32be()?;
417 let data_size = br.read_u32be()?;
418 validate!(data_size == 0);
419 let _frame_count = br.read_u16be()? as usize;
420 let _cname_len = br.read_byte()? as usize;
421 br.read_skip(31)?; // actual compressor name
422 let depth = br.read_u16be()?;
423 let ctable_id = br.read_u16be()?;
424 validate!((depth <= 8) || (ctable_id == 0xFFFF));
425 if ctable_id == 0 {
00333698 426 let max_pal_size = start_pos + size - br.tell();
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427 let mut pal = [0; 1024];
428 read_palette(br, max_pal_size, &mut pal)?;
429 track.pal = Some(Arc::new(pal));
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430 }
431// todo other atoms, put as extradata
432 let cname = if let Some(name) = find_codec_from_mov_video_fourcc(&fcc) {
433 name
434 } else if let Some(name) = find_codec_from_avi_fourcc(&fcc) {
435 name
436 } else {
437 "unknown"
438 };
439 let format = if depth > 8 { RGB24_FORMAT } else { PAL8_FORMAT };
440 let vhdr = NAVideoInfo::new(width, height, false, format);
441 let edata;
442 if br.tell() - start_pos + 4 < size {
443//todo skip various common atoms
444 let edata_size = br.read_u32be()? as usize;
445 let mut buf = vec![0; edata_size];
446 br.read_buf(buf.as_mut_slice())?;
447 edata = Some(buf);
448 } else {
449 edata = None;
450 }
451 codec_info = NACodecInfo::new(cname, NACodecTypeInfo::Video(vhdr), edata);
452 },
453 StreamType::Audio => {
454 let _ver = br.read_u16be()?;
455 let _revision = br.read_u16le()?;
456 let _vendor = br.read_u32be()?;
457 let nchannels = br.read_u16be()?;
458 validate!(nchannels <= 64);
459 let sample_size = br.read_u16be()?;
460 validate!(sample_size <= 128);
461 let _compr_id = br.read_u16be()?;
462 let packet_size = br.read_u16be()? as usize;
463 validate!(packet_size == 0);
464 let sample_rate = br.read_u32be()?;
465 validate!(sample_rate > 0);
466 let cname = if let Some(name) = find_codec_from_mov_audio_fourcc(&fcc) {
467 name
468 } 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]))) {
469 name
470 } else {
471 "unknown"
472 };
473//todo adjust format for various PCM kinds
474 let soniton = NASoniton::new(sample_size as u8, SONITON_FLAG_SIGNED | SONITON_FLAG_BE);
475 let block_align = 1;
476 let ahdr = NAAudioInfo::new(sample_rate >> 16, nchannels as u8, soniton, block_align);
477 let edata = None;
478 codec_info = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata);
479 track.channels = nchannels as usize;
480 track.bits = sample_size as usize;
481 },
482 StreamType::None => {
483 return Err(DemuxerError::InvalidData);
484 },
485 _ => {
486//todo put it all into extradata
487 let edata = None;
488 codec_info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata);
489 },
490 };
491 let read_size = br.tell() - start_pos;
492 validate!(read_size <= size);
493 track.stream = Some(NAStream::new(track.stream_type, track.track_no, codec_info, 1, track.tb_den));
494 track.stsd_found = true;
495 Ok(read_size)
496}
497
498fn read_stss(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
499 let version = br.read_byte()?;
500 validate!(version == 0);
501 let _flags = br.read_u24be()?;
502 let entries = br.read_u32be()? as usize;
503 validate!(entries < ((std::u32::MAX >> 2) - 8) as usize);
504 validate!((entries * 4 + 8) as u64 == size);
505 track.keyframes = Vec::with_capacity(entries);
506 let mut last_sample_no = 0;
507 for _ in 0..entries {
508 let sample_no = br.read_u32be()?;
509 validate!(sample_no > last_sample_no);
510 track.keyframes.push(sample_no);
511 last_sample_no = sample_no;
512 }
513 Ok(size)
514}
515
516fn read_stsc(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
517 let version = br.read_byte()?;
518 validate!(version == 0);
519 let _flags = br.read_u24be()?;
520 let entries = br.read_u32be()? as usize;
521 validate!(entries < ((std::u32::MAX / 12) - 8) as usize);
522 validate!((entries * 12 + 8) as u64 == size);
523 track.sample_map = Vec::with_capacity(entries);
524 let mut last_sample_no = 0;
525 for _i in 0..entries {
526 let sample_no = br.read_u32be()?;
527 validate!(sample_no > last_sample_no);
528 let nsamples = br.read_u32be()?;
529 let _sample_desc = br.read_u32be()?;
530 track.sample_map.push((sample_no, nsamples));
531 last_sample_no = sample_no;
532 }
533 Ok(size)
534}
535
536fn read_stsz(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
537 let version = br.read_byte()?;
538 validate!(version == 0);
539 let _flags = br.read_u24be()?;
540 let sample_size = br.read_u32be()?;
541 if sample_size != 0 {
542 track.sample_size = sample_size;
543 Ok(8)
544 } else {
545 let entries = br.read_u32be()? as usize;
546 validate!((entries * 4 + 12) as u64 == size);
547 track.chunk_sizes = Vec::with_capacity(entries);
548 for _ in 0..entries {
549 let sample_size = br.read_u32be()?;
550 track.chunk_sizes.push(sample_size);
551 }
552 Ok(size)
553 }
554}
555
556fn read_stco(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
557 let version = br.read_byte()?;
558 validate!(version == 0);
559 let _flags = br.read_u24be()?;
560 let entries = br.read_u32be()? as usize;
561 validate!((entries * 4 + 8) as u64 == size);
562 track.chunk_offsets = Vec::with_capacity(entries);
563 for _i in 0..entries {
564 let sample_offset = br.read_u32be()?;
565 track.chunk_offsets.push(u64::from(sample_offset));
566 }
567 Ok(size)
568}
569
570struct MOVDemuxer<'a> {
571 src: &'a mut ByteReader<'a>,
572 depth: usize,
573 mdat_pos: u64,
574 mdat_size: u64,
575 tracks: Vec<Track>,
576 cur_track: usize,
577 tb_den: u32,
578 duration: u32,
58cd51fa 579 pal: Option<Arc<[u8; 1024]>>,
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580}
581
582struct Track {
583 track_id: u32,
584 track_str_id: usize,
585 track_no: u32,
586 tb_den: u32,
587 depth: u8,
588 tkhd_found: bool,
589 stsd_found: bool,
590 stream_type: StreamType,
591 width: usize,
592 height: usize,
593 channels: usize,
594 bits: usize,
595 fcc: [u8; 4],
596 keyframes: Vec<u32>,
597 chunk_sizes: Vec<u32>,
598 chunk_offsets: Vec<u64>,
599 sample_map: Vec<(u32, u32)>,
600 sample_size: u32,
601 stream: Option<NAStream>,
602 cur_chunk: usize,
603 cur_sample: usize,
604 samples_left: usize,
605 last_offset: u64,
58cd51fa 606 pal: Option<Arc<[u8; 1024]>>,
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607}
608
609impl Track {
610 fn new(track_no: u32, tb_den: u32) -> Self {
611 Self {
612 tkhd_found: false,
613 stsd_found: false,
614 track_id: 0,
615 track_str_id: 0,
616 track_no,
617 tb_den,
618 stream_type: StreamType::None,
619 width: 0,
620 height: 0,
621 channels: 0,
622 bits: 0,
623 fcc: [0; 4],
624 keyframes: Vec::new(),
625 chunk_sizes: Vec::new(),
626 chunk_offsets: Vec::new(),
627 sample_map: Vec::new(),
628 sample_size: 0,
629 stream: None,
630 depth: 0,
631 cur_chunk: 0,
632 cur_sample: 0,
633 samples_left: 0,
634 last_offset: 0,
58cd51fa 635 pal: None,
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636 }
637 }
638 read_chunk_list!(track; "trak", read_trak, TRAK_CHUNK_HANDLERS);
639 read_chunk_list!(track; "mdia", read_mdia, MDIA_CHUNK_HANDLERS);
640 read_chunk_list!(track; "minf", read_minf, MINF_CHUNK_HANDLERS);
641 read_chunk_list!(track; "stbl", read_stbl, STBL_CHUNK_HANDLERS);
642 fn fill_seek_index(&self, seek_index: &mut SeekIndex) {
643 if self.keyframes.len() > 0 {
644 seek_index.mode = SeekIndexMode::Present;
645 }
646 for kf_time in self.keyframes.iter() {
647 let pts = u64::from(*kf_time - 1);
648 let time = NATimeInfo::ts_to_time(pts, 1000, 1, self.tb_den);
649 let idx = (*kf_time - 1) as usize;
650 if idx < self.chunk_offsets.len() {
651 let pos = self.chunk_offsets[idx];
652 seek_index.add_entry(self.track_no as u32, SeekEntry { time, pts, pos });
653 }
654 }
655 }
656 fn calculate_chunk_size(&self, nsamp: usize) -> usize {
657 if nsamp == 0 {
658 self.sample_size as usize
659 } else {
660 match &self.fcc {
661 b"NONE" | b"raw " | b"twos" | b"sowt" => {
662 (nsamp * self.bits * self.channels + 7) >> 3
663 },
664 b"ima4" => {
665 let nblocks = (nsamp + 63) >> 6;
666 nblocks * 34 * self.channels
667 },
668 b"MAC3" => {
669 (nsamp + 5) / 6 * 2 * self.channels
670 },
671 b"MAC6" => {
672 (nsamp + 5) / 6 * self.channels
673 },
674 b"in24" => nsamp * 3 * self.channels,
675 b"in32" | b"fl32" => nsamp * 4 * self.channels,
676 b"fl64" => nsamp * 8 * self.channels,
677 b"ulaw" | b"alaw" => nsamp,
678 b"ms\x00\x02" => { //MS ADPCM
679 ((nsamp - 1) / 2 + 7) * self.channels
680 },
681 b"ms\x00\x21" => { //IMA ADPCM
682 (nsamp / 2 + 4) * self.channels
683 },
684 _ => self.sample_size as usize,
685 }
686 }
687 }
688 fn get_next_chunk(&mut self) -> Option<(NATimeInfo, u64, usize)> {
689 let pts = NATimeInfo::new(Some(self.cur_sample as u64), None, None, 1, self.tb_den);
690//todo dts decoding
691 if self.chunk_offsets.len() == self.chunk_sizes.len() { // simple one-to-one mapping
692 if self.cur_sample >= self.chunk_sizes.len() {
693 return None;
694 }
695 let offset = self.chunk_offsets[self.cur_sample];
696 let size = self.chunk_sizes[self.cur_sample] as usize;
697 self.cur_sample += 1;
698 Some((pts, offset, size))
699 } else {
700 if self.samples_left == 0 {
701 if self.cur_chunk >= self.chunk_offsets.len() {
702 return None;
703 }
704 for (idx, samples) in self.sample_map.iter() {
705 if *idx as usize <= self.cur_chunk + 1 {
706 self.samples_left = *samples as usize;
707 } else {
708 break;
709 }
710 }
711 self.last_offset = self.chunk_offsets[self.cur_chunk];
712 self.cur_chunk += 1;
713 }
714 let offset = self.last_offset;
715 let size = self.get_size(self.cur_sample);
716 self.last_offset += size as u64;
717 if self.stream_type == StreamType::Video {
718 self.samples_left -= 1;
719 } else {
720 self.samples_left = 0;
721 }
722 self.cur_sample += 1;
723 Some((pts, offset, size))
724 }
725 }
726 fn get_size(&self, sample_no: usize) -> usize {
727 if self.chunk_sizes.len() > 0 {
728 self.chunk_sizes[sample_no] as usize
729 } else if self.sample_map.len() > 0 {
730 let mut nsamp = 0;
731 for (idx, samples) in self.sample_map.iter() {
732 if *idx as usize <= self.cur_chunk {
733 nsamp = *samples;
734 } else {
735 break;
736 }
737 }
738 self.calculate_chunk_size(nsamp as usize)
739 } else {
740 self.sample_size as usize
741 }
742 }
743 fn seek(&mut self, pts: u64) {
744 self.cur_sample = pts as usize;
745 self.samples_left = 0;
746 if self.stream_type == StreamType::Audio {
747 self.cur_chunk = self.cur_sample;
748 } else if self.chunk_offsets.len() != self.chunk_sizes.len() && self.sample_map.len() > 0{
749 let mut csamp = 0;
750 self.cur_chunk = 0;
751 let mut cmap = self.sample_map.iter();
752 let mut cur_samps = 0;
753 let (mut next_idx, mut next_samples) = cmap.next().unwrap();
754 loop {
755 if self.cur_chunk == next_idx as usize {
756 self.samples_left = cur_samps;
757 cur_samps = next_samples as usize;
758 if let Some((new_idx, new_samples)) = cmap.next() {
759 next_idx = *new_idx;
760 next_samples = *new_samples;
761 }
762 }
763 csamp += cur_samps;
764 if csamp >= self.cur_sample {
765 self.last_offset = self.chunk_offsets[self.cur_chunk];
766 break;
767 }
768 self.cur_chunk += 1;
769 }
770 csamp -= cur_samps;
771 for sample_no in csamp..self.cur_chunk {
772 self.last_offset += self.get_size(sample_no) as u64;
773 }
774 self.samples_left = self.cur_sample - csamp - cur_samps;
775 }
776 }
777}
778
779impl<'a> DemuxCore<'a> for MOVDemuxer<'a> {
780 fn open(&mut self, strmgr: &mut StreamManager, seek_index: &mut SeekIndex) -> DemuxerResult<()> {
781 self.read_root(strmgr)?;
782 validate!(self.mdat_pos > 0);
783 validate!(self.tracks.len() > 0);
784 for track in self.tracks.iter() {
785 track.fill_seek_index(seek_index);
786 }
787 self.src.seek(SeekFrom::Start(self.mdat_pos))?;
788 self.cur_track = 0;
789 Ok(())
790 }
791
792 fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
793 if self.tracks.len() == 0 {
794 return Err(DemuxerError::EOF);
795 }
796 for _ in 0..self.tracks.len() {
797 if self.cur_track >= self.tracks.len() {
798 self.cur_track = 0;
799 }
800 let track = &mut self.tracks[self.cur_track];
801 self.cur_track += 1;
58cd51fa 802 let first = track.cur_sample == 0;
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803 if let Some((pts, offset, size)) = track.get_next_chunk() {
804 let str = strmgr.get_stream(track.track_str_id);
805 if str.is_none() { return Err(DemuxerError::InvalidData); }
806 let stream = str.unwrap();
807 self.src.seek(SeekFrom::Start(offset))?;
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808 let mut pkt = self.src.read_packet(stream, pts, false, size)?;
809 if let Some(ref pal) = track.pal {
810 let side_data = NASideData::Palette(first, pal.clone());
811 pkt.add_side_data(side_data);
812 }
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813 return Ok(pkt);
814 }
815 }
816 return Err(DemuxerError::EOF);
817 }
818
819 fn seek(&mut self, time: u64, seek_index: &SeekIndex) -> DemuxerResult<()> {
820 let ret = seek_index.find_pos(time);
821 if ret.is_none() {
822 return Err(DemuxerError::SeekError);
823 }
824 let seek_info = ret.unwrap();
825 for track in self.tracks.iter_mut() {
826 track.seek(seek_info.pts);
827 }
828 Ok(())
829 }
830}
831
832impl<'a> MOVDemuxer<'a> {
833 fn new(io: &'a mut ByteReader<'a>) -> Self {
834 MOVDemuxer {
835 src: io,
836 depth: 0,
837 mdat_pos: 0,
838 mdat_size: 0,
839 tracks: Vec::with_capacity(2),
840 cur_track: 0,
841 tb_den: 0,
842 duration: 0,
58cd51fa 843 pal: None,
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844 }
845 }
846 fn read_root(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
847 self.depth = 0;
848 while self.src.left() != 0 {
849 let ret = read_chunk_header(&mut self.src);
850 if ret.is_err() { break; }
851 let (ctype, size) = ret.unwrap();
852 if IGNORED_CHUNKS.contains(&ctype) {
853 self.src.skip64(size)?;
854 continue;
855 }
856 let handler = ROOT_CHUNK_HANDLERS.iter().find(|x| x.ctype == ctype);
857 let read_size;
858 if let Some(ref handler) = handler {
859 read_size = (handler.parse)(self, strmgr, size)?;
860 } else {
861 println!("skipping unknown chunk {:08X} size {}", ctype, size);
862 read_size = 0;
863 }
864 validate!(read_size <= size);
865 self.src.skip64(size - read_size)?;
866 }
867//todo check if all needed chunks are found
868 Ok(())
869 }
870 read_chunk_list!(root; "moov", read_moov, MOOV_CHUNK_HANDLERS);
871}
872
873pub struct MOVDemuxerCreator { }
874
875impl DemuxerCreator for MOVDemuxerCreator {
876 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
877 Box::new(MOVDemuxer::new(br))
878 }
879 fn get_name(&self) -> &'static str { "mov" }
880}
881
882#[cfg(test)]
883mod test {
884 use super::*;
885 use std::fs::File;
886
887 #[test]
888 fn test_mov_demux() {
889 let mut file = File::open("assets/Indeo/cubes.mov").unwrap();
890 let mut fr = FileReader::new_read(&mut file);
891 let mut br = ByteReader::new(&mut fr);
892 let mut dmx = MOVDemuxer::new(&mut br);
893 let mut sm = StreamManager::new();
894 let mut si = SeekIndex::new();
895 dmx.open(&mut sm, &mut si).unwrap();
896
897 loop {
898 let pktres = dmx.get_frame(&mut sm);
899 if let Err(e) = pktres {
900 if e == DemuxerError::EOF { break; }
901 panic!("error");
902 }
903 let pkt = pktres.unwrap();
904 println!("Got {}", pkt);
905 }
906 }
907}