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[nihav.git] / nihav-realmedia / src / demuxers / realmedia.rs
1 use super::*;
2 use nihav_core::demuxers::DemuxerError::*;
3 use std::io::SeekFrom;
4 use std::mem;
5 use std::fmt;
6
7 macro_rules! mktag {
8 ($a:expr, $b:expr, $c:expr, $d:expr) => ({
9 (($a as u32) << 24) | (($b as u32) << 16) | (($c as u32) << 8) | ($d as u32)
10 });
11 ($arr:expr) => ({
12 (($arr[0] as u32) << 24) | (($arr[1] as u32) << 16) | (($arr[2] as u32) << 8) | ($arr[3] as u32)
13 });
14 }
15
16 trait ReadSize {
17 fn read_size(&mut self, ver: u16) -> ByteIOResult<u64>;
18 }
19
20 impl<'a> ReadSize for ByteReader<'a> {
21 fn read_size(&mut self, ver: u16) -> ByteIOResult<u64> {
22 match ver {
23 0 => Ok(u64::from(self.read_u32be()?)),
24 2 => self.read_u64be(),
25 _ => unreachable!(),
26 }
27 }
28 }
29
30 const RM_SIPRO_BLOCK_SIZES: [usize; 4] = [ 29, 19, 37, 20 ];
31 const RM_SIPRO_SWAPS: [[u8; 2]; 38] = [
32 [ 0, 63 ], [ 1, 22 ], [ 2, 44 ], [ 3, 90 ],
33 [ 5, 81 ], [ 7, 31 ], [ 8, 86 ], [ 9, 58 ],
34 [ 10, 36 ], [ 12, 68 ], [ 13, 39 ], [ 14, 73 ],
35 [ 15, 53 ], [ 16, 69 ], [ 17, 57 ], [ 19, 88 ],
36 [ 20, 34 ], [ 21, 71 ], [ 24, 46 ], [ 25, 94 ],
37 [ 26, 54 ], [ 28, 75 ], [ 29, 50 ], [ 32, 70 ],
38 [ 33, 92 ], [ 35, 74 ], [ 38, 85 ], [ 40, 56 ],
39 [ 42, 87 ], [ 43, 65 ], [ 45, 59 ], [ 48, 79 ],
40 [ 49, 93 ], [ 51, 89 ], [ 55, 95 ], [ 61, 76 ],
41 [ 67, 83 ], [ 77, 80 ]
42 ];
43
44 struct RMVideoStream {
45 frame: Vec<u8>,
46 hdr_size: usize,
47 frame_size: usize,
48 frame_pos: usize,
49 }
50
51 impl RMVideoStream {
52 fn new() -> Self {
53 RMVideoStream {
54 frame: Vec::new(),
55 hdr_size: 0,
56 frame_size: 0,
57 frame_pos: 0,
58 }
59 }
60 fn flush(&mut self) {
61 self.frame.clear();
62 self.frame_size = 0;
63 self.frame_pos = 0;
64 }
65 fn start_slice(&mut self, num_slices: usize, frame_size: usize, data: &[u8]) {
66 self.hdr_size = num_slices * 8 + 1;
67 self.frame.resize(frame_size + self.hdr_size, 0);
68 self.frame[0] = (num_slices - 1) as u8;
69 self.frame_pos = 0;
70 self.add_slice(1, data).unwrap();
71 }
72 fn add_slice(&mut self, slice_no: usize, data: &[u8]) -> DemuxerResult<()> {
73 validate!(self.hdr_size + self.frame_pos + data.len() <= self.frame.len());
74 self.write_slice_info(slice_no);
75 let dslice = &mut self.frame[self.hdr_size + self.frame_pos..][..data.len()];
76 dslice.copy_from_slice(data);
77 self.frame_pos += data.len();
78 Ok(())
79 }
80 fn write_slice_info(&mut self, slice_no: usize) {
81 let off = 1 + (slice_no - 1) * 8;
82 self.frame[off + 0] = 0;
83 self.frame[off + 1] = 0;
84 self.frame[off + 2] = 0;
85 self.frame[off + 3] = 1;
86 self.frame[off + 4] = (self.frame_pos >> 24) as u8;
87 self.frame[off + 5] = (self.frame_pos >> 16) as u8;
88 self.frame[off + 6] = (self.frame_pos >> 8) as u8;
89 self.frame[off + 7] = (self.frame_pos >> 0) as u8;
90 }
91 fn get_frame_data(&mut self) -> Vec<u8> {
92 let mut v: Vec<u8> = Vec::new();
93 mem::swap(&mut v, &mut self.frame);
94 self.flush();
95 v
96 }
97 }
98
99 #[derive(Clone,Copy,PartialEq)]
100 enum Deinterleaver {
101 None,
102 RA28_8,
103 Generic,
104 Sipro,
105 VBR,
106 }
107
108 struct RMAudioStream {
109 deint: Deinterleaver,
110 iinfo: Option<InterleaveInfo>,
111 buf: Vec<u8>,
112 sub_packet: usize,
113 }
114
115 const RM_ILEAVE_INT0: u32 = mktag!(b"Int0");
116 const RM_ILEAVE_INT4: u32 = mktag!(b"Int4");
117 const RM_ILEAVE_GENR: u32 = mktag!(b"genr");
118 const RM_ILEAVE_SIPR: u32 = mktag!(b"sipr");
119 const RM_ILEAVE_VBRF: u32 = mktag!(b"vbrf");
120 const RM_ILEAVE_VBRS: u32 = mktag!(b"vbrs");
121
122 impl RMAudioStream {
123 fn new(iinfo: Option<InterleaveInfo>) -> Self {
124 let deint;
125 let buf: Vec<u8>;
126 if let Some(info) = iinfo {
127 deint = match info.id {
128 RM_ILEAVE_INT0 => Deinterleaver::None,
129 RM_ILEAVE_INT4 => Deinterleaver::RA28_8,
130 RM_ILEAVE_GENR => Deinterleaver::Generic,
131 RM_ILEAVE_SIPR => Deinterleaver::Sipro,
132 RM_ILEAVE_VBRF => Deinterleaver::VBR,
133 RM_ILEAVE_VBRS => Deinterleaver::VBR,
134 _ => {println!("unknown deint {:X}", info.id); Deinterleaver::None },
135 };
136 match deint {
137 Deinterleaver::None => { buf = Vec::new(); },
138 Deinterleaver::RA28_8 |
139 Deinterleaver::Generic |
140 Deinterleaver::Sipro => {
141 let bsize = (info.frame_size as usize) * (info.factor as usize);
142 buf = vec![0; bsize];
143 },
144 Deinterleaver::VBR => {
145 buf = Vec::new();
146 },
147 };
148 } else {
149 deint = Deinterleaver::None;
150 buf = Vec::new();
151 }
152 RMAudioStream { deint, iinfo, buf, sub_packet: 0 }
153 }
154 fn read_apackets(&mut self, queued_packets: &mut Vec<NAPacket>, src: &mut ByteReader, stream: NAStreamRef, ts: u32, keyframe: bool, payload_size: usize) -> DemuxerResult<NAPacket> {
155 let ts = stream.make_ts(Some(ts as u64), None, None);
156
157 if keyframe {
158 self.sub_packet = 0;
159 }
160 match self.deint {
161 Deinterleaver::None => { return src.read_packet(stream, ts, keyframe, payload_size); },
162 Deinterleaver::RA28_8 => {
163 let iinfo = self.iinfo.unwrap();
164 let factor = iinfo.factor as usize;
165 let halffact = factor >> 1;
166 let fsize = iinfo.frame_size as usize;
167 let bsize = iinfo.block_size as usize;
168 let ppos = self.sub_packet;
169 for sb in 0..halffact {
170 let dst = &mut self.buf[sb * 2 * fsize + ppos * bsize..][..bsize];
171 src.read_buf(dst)?;
172 }
173 self.sub_packet += 1;
174 if self.sub_packet == factor {
175 self.sub_packet = 0;
176 return Ok(NAPacket::new(stream, ts, true, self.buf.clone()));
177 } else {
178 return Err(DemuxerError::TryAgain);
179 }
180 },
181 Deinterleaver::Generic => {
182 let iinfo = self.iinfo.unwrap();
183 let factor = iinfo.factor as usize;
184 let fsize = iinfo.frame_size as usize;
185 let bsize = iinfo.block_size as usize;
186 let factor2 = fsize / bsize;
187 let ppos = self.sub_packet;
188
189 for sb in 0..factor2 {
190 let sb_pos = factor * sb + ((factor + 1) >> 1) * (ppos & 1) + (ppos >> 1);
191 let dst = &mut self.buf[bsize * sb_pos..][..bsize];
192 src.read_buf(dst)?;
193 }
194 },
195 Deinterleaver::Sipro => {
196 let iinfo = self.iinfo.unwrap();
197 let fsize = iinfo.frame_size as usize;
198 let ppos = self.sub_packet;
199
200 let dst = &mut self.buf[fsize * ppos..][..fsize];
201 src.read_buf(dst)?;
202 },
203 Deinterleaver::VBR => {
204 validate!(payload_size >= 5);
205 let hdrsizesize = src.read_u16be()?;
206 let num_entries = (hdrsizesize / 16) as usize;
207 validate!(payload_size >= num_entries * 3 + 2);
208 let mut sizes: Vec<usize> = Vec::with_capacity(num_entries);
209 let mut tot_size = 0;
210 for _ in 0..num_entries {
211 let sz = src.read_u16be()? as usize;
212 tot_size += sz;
213 sizes.push(sz);
214 }
215 validate!(tot_size + num_entries * 2 + 2 == payload_size);
216 let pkt_ts = stream.make_ts(None, None, None);
217 let mut first = true;
218 for size in sizes.iter() {
219 let cur_ts = if first { ts } else { pkt_ts };
220 first = false;
221 let pkt = src.read_packet(stream.clone(), cur_ts, true, *size)?;
222 queued_packets.push(pkt);
223 }
224 queued_packets.reverse();
225 let pkt0 = queued_packets.pop().unwrap();
226 return Ok(pkt0);
227 },
228 };
229
230 let iinfo = self.iinfo.unwrap();
231 let factor = iinfo.factor as usize;
232 let fsize = if iinfo.block_size != 0 { iinfo.block_size } else { iinfo.frame_size } as usize;
233
234 self.sub_packet += 1;
235 if self.sub_packet < factor {
236 return Err(DemuxerError::TryAgain);
237 }
238
239 self.sub_packet = 0;
240
241 if self.deint == Deinterleaver::Sipro {
242 sipro_restore(&mut self.buf, factor, iinfo.frame_size as usize);
243 }
244
245 let mut frames_iter = self.buf.chunks(fsize);
246 let pkt0 = frames_iter.next().unwrap();
247
248 let pkt_ts = stream.make_ts(None, None, None);
249 for pkts in frames_iter {
250 let pkt = NAPacket::new(stream.clone(), pkt_ts, true, pkts.to_vec());
251 queued_packets.push(pkt);
252 }
253 queued_packets.reverse();
254 Ok(NAPacket::new(stream, ts, true, pkt0.to_vec()))
255 }
256 }
257
258 fn sipro_restore(buf: &mut [u8], factor: usize, fsize: usize) {
259 let stride = factor * fsize * 2 / 96;
260 for i in 0..38 {
261 let mut sidx = (RM_SIPRO_SWAPS[i][0] as usize) * stride;
262 let mut didx = (RM_SIPRO_SWAPS[i][1] as usize) * stride;
263 for _ in 0..stride {
264 let in0 = buf[sidx >> 1];
265 let in1 = buf[didx >> 1];
266 let nib0 = (in0 >> ((sidx & 1) * 4)) & 0xF;
267 let nib1 = (in1 >> ((didx & 1) * 4)) & 0xF;
268
269 buf[didx >> 1] = (nib0 << (4 * (didx & 1))) | (in1 & (0xF << (4 * (!didx & 1))));
270 buf[sidx >> 1] = (nib1 << (4 * (sidx & 1))) | (in0 & (0xF << (4 * (!sidx & 1))));
271
272 sidx += 1;
273 didx += 1;
274 }
275 }
276 }
277
278 struct SubstreamInfo {
279 id: u32,
280 map: Vec<u16>,
281 str_ids: Vec<u32>,
282 }
283
284 struct MLTIMapper {
285 sub_info: Vec<SubstreamInfo>,
286 sstr_id: u32,
287 }
288
289 impl MLTIMapper {
290 fn new() -> Self {
291 MLTIMapper {
292 sub_info: Vec::new(),
293 sstr_id: 0x10000,
294 }
295 }
296 fn add_stream(&mut self, stream_no: u32) {
297 let ssinfo = SubstreamInfo { id: stream_no, map: Vec::new(), str_ids: Vec::new() };
298 self.sub_info.push(ssinfo);
299 }
300 fn get_substream_no(&self) -> u32 {
301 self.sstr_id - 1
302 }
303 fn find_idx(&self, stream_no: u32) -> Option<usize> {
304 self.sub_info.iter().position(|x| x.id == stream_no)
305 }
306 fn add_map_rule(&mut self, map_ss: u16) {
307 let idx = self.sub_info.len() - 1;
308 self.sub_info[idx].map.push(map_ss);
309 }
310 fn add_substream(&mut self) {
311 let idx = self.sub_info.len() - 1;
312 self.sub_info[idx].str_ids.push(self.sstr_id);
313 self.sstr_id += 1;
314 }
315 fn is_mlti_stream(&self, stream_no: u32) -> bool {
316 self.find_idx(stream_no).is_some()
317 }
318 fn find_substream(&self, stream_no: u32, grp: u16) -> Option<u32> {
319 if let Some(idx) = self.find_idx(stream_no) {
320 if (grp as usize) < self.sub_info[idx].map.len() {
321 let sub_id = self.sub_info[idx].map[grp as usize] as usize;
322 if sub_id < self.sub_info[idx].str_ids.len() {
323 return Some(self.sub_info[idx].str_ids[sub_id]);
324 }
325 }
326 }
327 None
328 }
329 }
330
331 enum RMStreamType {
332 Audio(RMAudioStream),
333 Video(RMVideoStream),
334 Logical,
335 Unknown,
336 }
337
338 struct CommonStreamData {
339 streams: Vec<RMStreamType>,
340 str_ids: Vec<u32>,
341 mlti_mapper: MLTIMapper,
342 }
343
344 impl CommonStreamData {
345 fn new() -> Self {
346 CommonStreamData {
347 streams: Vec::new(),
348 str_ids: Vec::new(),
349 mlti_mapper: MLTIMapper::new(),
350 }
351 }
352 fn get_stream_id(&self, str_no: u32, pkt_grp: u16) -> u32 {
353 if !self.mlti_mapper.is_mlti_stream(str_no) {
354 str_no
355 } else {
356 self.mlti_mapper.find_substream(str_no, pkt_grp).unwrap()
357 }
358 }
359 fn find_stream(&self, stream_id: u32) -> Option<usize> {
360 self.str_ids.iter().position(|x| *x == stream_id)
361 }
362 }
363
364 struct RealMediaDemuxer<'a> {
365 src: &'a mut ByteReader<'a>,
366 data_pos: u64,
367 data_end: u64,
368 next_data: u64,
369 data_ver: u16,
370 num_packets: u32,
371 cur_packet: u32,
372
373 str_data: CommonStreamData,
374
375 data_chunks: Vec<(u64, u32, u16)>,
376 cur_data_chunk: usize,
377
378 queued_pkts: Vec<NAPacket>,
379 slice_buf: Vec<u8>,
380 }
381
382 fn find_codec_name(registry: &[(&[u8;4], &'static str)], fcc: u32) -> &'static str {
383 for &(fourcc, name) in registry {
384 if mktag!(fourcc) == fcc { return name; }
385 }
386 "unknown"
387 }
388
389 fn read_14or30(src: &mut ByteReader) -> DemuxerResult<(bool, u32)> {
390 let tmp = src.read_u16be()?;
391 let flag = (tmp & 0x8000) != 0;
392 if (tmp & 0x4000) == 0x4000 {
393 Ok((flag, ((tmp & 0x3FFF) as u32)))
394 } else {
395 let val = ((tmp as u32) << 16) | (src.read_u16be()? as u32);
396 Ok((flag, val & 0x3FFFFFFF))
397 }
398 }
399
400 fn read_video_buf(src: &mut ByteReader, stream: NAStreamRef, ts: u32, keyframe: bool, frame_size: usize) -> DemuxerResult<NAPacket> {
401 let size = (frame_size as usize) + 9;
402 let mut vec: Vec<u8> = vec![0; size];
403 //v[0] = 0; // 1 slice
404 vec[4] = 1;
405 src.read_buf(&mut vec[9..])?;
406
407 let ts = stream.make_ts(Some(ts as u64), None, None);
408 Ok(NAPacket::new(stream, ts, keyframe, vec))
409 }
410
411 fn read_multiple_frame(src: &mut ByteReader, stream: NAStreamRef, keyframe: bool, skip_mtype: bool) -> DemuxerResult<NAPacket> {
412 if !skip_mtype {
413 let mtype = src.read_byte()?;
414 validate!(mtype == 0xC0);
415 }
416 let (_, frame_size) = read_14or30(src)?;
417 let (_, timestamp) = read_14or30(src)?;
418 let _seq_no = src.read_byte()?;
419
420 read_video_buf(src, stream, timestamp, keyframe, frame_size as usize)
421 }
422
423 struct RMDemuxCommon {}
424
425 impl RMDemuxCommon {
426 fn parse_stream_info(str_data: &mut CommonStreamData, strmgr: &mut StreamManager, stream_no: u32, edata: &[u8], duration: u32) -> DemuxerResult<bool> {
427 let mut is_mlti = false;
428 let mut mr = MemoryReader::new_read(edata);
429 let mut src = ByteReader::new(&mut mr);
430 let tag = src.read_u32be()?;
431 let tag2 = src.peek_u32be()?;
432 if tag == mktag!('.', 'r', 'a', 0xFD) {
433 Self::parse_audio_stream(strmgr, &mut str_data.streams, stream_no, &mut src, edata, duration)?;
434 } else if ((tag2 == mktag!('V', 'I', 'D', 'O')) || (tag2 == mktag!('I', 'M', 'A', 'G'))) && ((tag as usize) <= edata.len()) {
435 Self::parse_video_stream(strmgr, &mut str_data.streams, stream_no, &mut src, edata, tag2, duration)?;
436 } else if tag == mktag!(b"LSD:") {
437 let extradata = Some(edata.to_owned());
438
439 src.read_skip(4)?; //version
440 let channels = src.read_u16be()?;
441 let samp_size = src.read_u16be()?;
442 let sample_rate = src.read_u32be()?;
443
444 let soniton = NASoniton::new(samp_size as u8, SONITON_FLAG_SIGNED);
445 let ahdr = NAAudioInfo::new(sample_rate, channels as u8, soniton, 1);
446 let nainfo = NACodecInfo::new("ralf", NACodecTypeInfo::Audio(ahdr), extradata);
447 let res = strmgr.add_stream(NAStream::new(StreamType::Audio, stream_no as u32, nainfo, 1, 1000, u64::from(duration)));
448 if res.is_none() { return Err(MemoryError); }
449 let astr = RMAudioStream::new(None);
450 str_data.streams.push(RMStreamType::Audio(astr));
451 } else if tag == mktag!(b"MLTI") {
452 is_mlti = true;
453 let num_rules = src.read_u16be()? as usize;
454 let mut max_sub = 0;
455 str_data.mlti_mapper.add_stream(stream_no);
456 for _ in 0..num_rules {
457 let substr = src.read_u16be()?;
458 max_sub = max_sub.max(substr);
459 str_data.mlti_mapper.add_map_rule(substr);
460 }
461 let num_substreams = src.read_u16be()? as usize;
462 validate!(num_substreams > (max_sub as usize));
463 for _ in 0..num_substreams {
464 let hdr_size = src.read_u32be()? as usize;
465 validate!(hdr_size > 8);
466 let pos = src.tell() as usize;
467 src.read_skip(hdr_size)?;
468 str_data.mlti_mapper.add_substream();
469 {
470 let hdrsrc = &edata[pos..][..hdr_size];
471 let mut mr = MemoryReader::new_read(hdrsrc);
472 let mut hsrc = ByteReader::new(&mut mr);
473
474 let tag = hsrc.read_u32be()?;
475 let tag2 = hsrc.peek_u32be()?;
476 let stream_no = str_data.mlti_mapper.get_substream_no();
477 //todo check that all substreams are of the same type");
478 if tag == mktag!('.', 'r', 'a', 0xFD) {
479 Self::parse_audio_stream(strmgr, &mut str_data.streams, stream_no, &mut hsrc, hdrsrc, duration)?;
480 } else if (tag2 == mktag!('V', 'I', 'D', 'O')) && ((tag as usize) <= hdr_size) {
481 Self::parse_video_stream(strmgr, &mut str_data.streams, stream_no, &mut hsrc, hdrsrc, tag2, duration)?;
482 } else {
483 println!("unknown MLTI substream {:08X} / {:08X}", tag, tag2);
484 return Err(DemuxerError::InvalidData);
485 }
486 str_data.str_ids.push(stream_no);
487 }
488 }
489 } else {
490 str_data.streams.push(RMStreamType::Logical);
491 }
492 Ok(is_mlti)
493 }
494 fn parse_audio_stream(strmgr: &mut StreamManager, streams: &mut Vec<RMStreamType>, stream_no: u32, src: &mut ByteReader, edata_: &[u8], duration: u32) -> DemuxerResult<()> {
495 let ver = src.read_u16be()?;
496 let ainfo = match ver {
497 3 => {
498 parse_aformat3(src)?
499 },
500 4 => {
501 parse_aformat4(src)?
502 },
503 5 => {
504 parse_aformat5(src)?
505 },
506 _ => {
507 println!("unknown version {}", ver);
508 return Err(DemuxerError::InvalidData);
509 },
510 };
511 let cname = find_codec_name(RM_AUDIO_CODEC_REGISTER, ainfo.fcc);
512 let blk_size = if ainfo.fcc != mktag!(b"sipr") {
513 if let Some(ref iinfo) = ainfo.ileave_info {
514 iinfo.block_size as usize
515 } else {
516 ainfo.granularity as usize
517 }
518 } else {
519 validate!(ainfo.flavor <= 3);
520 RM_SIPRO_BLOCK_SIZES[ainfo.flavor as usize]
521 };
522 let srate = ainfo.sample_rate;
523 let soniton = NASoniton::new(ainfo.sample_size as u8, SONITON_FLAG_SIGNED);
524 let ahdr = NAAudioInfo::new(srate, ainfo.channels as u8, soniton, blk_size);
525 let extradata = if ainfo.edata_size == 0 {
526 None
527 } else {
528 let eslice = &edata_[(src.tell() as usize)..];
529 Some(eslice.to_vec())
530 };
531 let duration = if duration == 0 { ainfo.get_duration(1000) } else { u64::from(duration) };
532 let nainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), extradata);
533 let res = strmgr.add_stream(NAStream::new(StreamType::Audio, stream_no as u32, nainfo, 1, 1000, duration));
534 if res.is_none() { return Err(MemoryError); }
535
536 let astr = RMAudioStream::new(ainfo.ileave_info);
537 streams.push(RMStreamType::Audio(astr));
538 Ok(())
539 }
540 #[allow(unused_variables)]
541 fn parse_video_stream(strmgr: &mut StreamManager, streams: &mut Vec<RMStreamType>, stream_no: u32, src: &mut ByteReader, edata_: &[u8], tag2: u32, duration: u32) -> DemuxerResult<()> {
542 src.read_skip(4)?;
543 let fcc = src.read_u32be()?;
544 let width = src.read_u16be()? as usize;
545 let height = src.read_u16be()? as usize;
546 let bpp = src.read_u16be()?;
547 let pad_w = src.read_u16be()?;
548 let pad_h = src.read_u16be()?;
549 let _fps;
550 if tag2 == mktag!('V', 'I', 'D', 'O') {
551 _fps = src.read_u32be()?;
552 } else {
553 _fps = 0x10000;
554 }
555 let extradata: Option<Vec<u8>>;
556 if src.left() > 0 {
557 let eslice = &edata_[(src.tell() as usize)..];
558 extradata = Some(eslice.to_vec());
559 } else {
560 extradata = None;
561 }
562 let cname = find_codec_name(RM_VIDEO_CODEC_REGISTER, fcc);
563
564 let vhdr = NAVideoInfo::new(width, height, false, RGB24_FORMAT);
565 let vinfo = NACodecInfo::new(cname, NACodecTypeInfo::Video(vhdr), extradata);
566 let res = strmgr.add_stream(NAStream::new(StreamType::Video, stream_no as u32, vinfo, 1, 1000, u64::from(duration)));
567 if res.is_none() { return Err(DemuxerError::MemoryError); }
568
569 let vstr = RMVideoStream::new();
570 streams.push(RMStreamType::Video(vstr));
571 Ok(())
572 }
573 #[allow(unused_variables)]
574 fn parse_packet_payload(src: &mut ByteReader, rmstream: &mut RMStreamType, stream: NAStreamRef, slice_buf: &mut Vec<u8>, queued_pkts: &mut Vec<NAPacket>, keyframe: bool, ts: u32, payload_size: usize) -> DemuxerResult<NAPacket> {
575 match rmstream {
576 RMStreamType::Video(ref mut vstr) => {
577
578 let pos = src.tell();
579 let b0 = src.read_byte()?;
580 match b0 >> 6 {
581 0 => { // partial frame
582 let b1 = src.read_byte()?;
583 let hdr1 = ((b0 as u16) << 8) | (b1 as u16);
584 let num_pkts = ((hdr1 >> 7) & 0x7F) as usize;
585 let packet_num = hdr1 & 0x7F;
586 let (_, frame_size) = read_14or30(src)?;
587 let (_, off) = read_14or30(src)?;
588 let seq_no = src.read_byte()?;
589 let hdr_skip = (src.tell() - pos) as usize;
590
591 let slice_size = (payload_size - hdr_skip) as usize;
592 slice_buf.resize(slice_size, 0);
593 src.read_buf(slice_buf.as_mut_slice())?;
594 if packet_num == 1 {
595 vstr.start_slice(num_pkts, frame_size as usize, slice_buf.as_slice());
596 } else {
597 vstr.add_slice(packet_num as usize, slice_buf.as_slice())?;
598 }
599 if (packet_num as usize) < num_pkts {
600 return Err(DemuxerError::TryAgain);
601 }
602 //todo: check if full frame is received
603 let ts = stream.make_ts(Some(ts as u64), None, None);
604 let pkt = NAPacket::new(stream, ts, keyframe, vstr.get_frame_data());
605 Ok(pkt)
606 },
607 1 => { // whole frame
608 let seq_no = src.read_byte()?;
609 read_video_buf(src, stream, ts, keyframe, payload_size - 2)
610 },
611 2 => { // last partial frame
612 let b1 = src.read_byte()?;
613 let hdr1 = ((b0 as u16) << 8) | (b1 as u16);
614 let num_pkts = ((hdr1 >> 7) & 0x7F) as usize;
615 let packet_num = hdr1 & 0x7F;
616 let (_, frame_size) = read_14or30(src)?;
617 let (_, tail_size) = read_14or30(src)?;
618 let seq_no = src.read_byte()?;
619 slice_buf.resize(tail_size as usize, 0);
620 src.read_buf(slice_buf.as_mut_slice())?;
621 if packet_num == 1 && frame_size == tail_size {
622 vstr.start_slice(num_pkts, frame_size as usize, slice_buf.as_slice());
623 } else {
624 vstr.add_slice(packet_num as usize, slice_buf.as_slice())?;
625 }
626
627 while src.tell() < pos + (payload_size as u64) {
628 let res = read_multiple_frame(src, stream.clone(), false, false);
629 if res.is_err() { break; }
630 queued_pkts.push(res.unwrap());
631 }
632 queued_pkts.reverse();
633 let ts = stream.make_ts(Some(ts as u64), None, None);
634 let pkt = NAPacket::new(stream, ts, keyframe, vstr.get_frame_data());
635 Ok(pkt)
636 },
637 _ => { // multiple frames
638 let res = read_multiple_frame(src, stream.clone(), keyframe, true);
639 if res.is_err() { return res; }
640 while src.tell() < pos + (payload_size as u64) {
641 let res = read_multiple_frame(src, stream.clone(), false, false);
642 if res.is_err() { break; }
643 queued_pkts.push(res.unwrap());
644 }
645 queued_pkts.reverse();
646 res
647 },
648 }
649 },
650 RMStreamType::Audio(ref mut astr) => {
651 astr.read_apackets(queued_pkts, src, stream, ts, keyframe, payload_size)
652 },
653 _ => {
654 src.read_skip(payload_size)?;
655 Err(DemuxerError::InvalidData)
656 },
657 }
658 }
659 }
660
661 impl<'a> DemuxCore<'a> for RealMediaDemuxer<'a> {
662 fn open(&mut self, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex) -> DemuxerResult<()> {
663 self.read_header(strmgr, seek_idx)?;
664 Ok(())
665 }
666
667 #[allow(unused_variables)]
668 fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
669 if !self.queued_pkts.is_empty() {
670 let pkt = self.queued_pkts.pop().unwrap();
671 return Ok(pkt);
672 }
673 loop {
674 if (self.cur_packet >= self.num_packets) || (self.src.tell() >= self.data_end) {
675 self.cur_data_chunk += 1;
676 if self.cur_data_chunk < self.data_chunks.len() {
677 let (pos, _, _) = self.data_chunks[self.cur_data_chunk];
678 self.src.seek(SeekFrom::Start(pos))?;
679 let res = read_chunk(self.src);
680 if let Ok((id, size, ver)) = res {
681 self.data_pos = self.src.tell();
682 self.data_ver = ver;
683 self.data_end = self.data_pos + (size as u64);
684 if self.parse_data_start().is_ok() {
685 continue;
686 }
687 }
688 }
689 return Err(DemuxerError::EOF);
690 }
691
692 let pkt_start = self.src.tell();
693 let ver = self.src.read_u16be()?;
694 validate!(ver <= 1);
695 let len = self.src.read_u16be()? as usize;
696 let str_no = self.src.read_u16be()? as u32;
697 let ts = self.src.read_u32be()?;
698 let pkt_grp;
699 let flags;
700 if ver == 0 {
701 pkt_grp = self.src.read_byte()? as u16;
702 flags = self.src.read_byte()?;
703 } else {
704 //asm_rule = self.src.read_u16be()?;
705 //asm_flags = self.src.read_byte()?;
706 self.src.read_skip(2)?;
707 pkt_grp = 0;
708 self.src.read_skip(1)?;
709 flags = 0;
710 }
711 let hdr_size = self.src.tell() - pkt_start;
712 //println!("packet @{:X} size {} for {} ts {} grp {} flags {:X}", pkt_start, len, str_no, ts, pkt_grp, flags);
713 self.cur_packet += 1;
714
715 let payload_size = len - (hdr_size as usize);
716
717 let stream_id = self.str_data.get_stream_id(str_no as u32, pkt_grp);
718 let sr = self.str_data.find_stream(stream_id);
719 if sr.is_none() {
720 self.src.read_skip(payload_size)?;
721 return Err(DemuxerError::InvalidData);
722 }
723 let str_id = sr.unwrap();
724
725 let streamres = strmgr.get_stream_by_id(stream_id);
726 if streamres.is_none() {
727 self.src.read_skip(payload_size)?;
728 continue;
729 }
730 let stream = streamres.unwrap();
731 if strmgr.is_ignored_id(stream_id) {
732 self.src.read_skip(payload_size)?;
733 continue;
734 }
735 //todo skip unwanted packet
736 let keyframe = (flags & KEYFRAME_FLAG) != 0;
737
738 let ret = RMDemuxCommon::parse_packet_payload(self.src, &mut self.str_data.streams[str_id], stream, &mut self.slice_buf, &mut self.queued_pkts, keyframe, ts, payload_size);
739 if let Err(DemuxerError::TryAgain) = ret {
740 continue;
741 } else {
742 return ret;
743 }
744 }
745 }
746
747 #[allow(unused_variables)]
748 fn seek(&mut self, time: NATimePoint, seek_idx: &SeekIndex) -> DemuxerResult<()> {
749 self.queued_pkts.clear();
750 let ret = seek_idx.find_pos(time);
751 if ret.is_none() {
752 return Err(DemuxerError::SeekError);
753 }
754 let ret = ret.unwrap();
755 let seek_pos = ret.pos;
756 for (pos, size, ver) in self.data_chunks.iter() {
757 if seek_pos < *pos { continue; }
758 let end = *pos + (*size as u64);
759 if seek_pos < end {
760 self.cur_packet = 0;
761 self.data_pos = seek_pos;
762 self.data_ver = *ver;
763 self.data_end = end;
764 self.src.seek(SeekFrom::Start(seek_pos))?;
765 return Ok(());
766 }
767 }
768 Err(DemuxerError::SeekError)
769 }
770
771 fn get_duration(&self) -> u64 { 0 }
772 }
773
774 impl<'a> NAOptionHandler for RealMediaDemuxer<'a> {
775 fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
776 fn set_options(&mut self, _options: &[NAOption]) { }
777 fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
778 }
779
780 fn read_chunk(src: &mut ByteReader) -> DemuxerResult<(u32, u32, u16)> {
781 let id = src.read_u32be()?;
782 if id == 0 { return Ok((0, 0, 0)); }
783 let size = src.read_u32be()?;
784 if size == 0 {
785 let ver = src.read_u16be()?;
786 validate!(ver <= 2);
787 return Ok((id, 0x0FFFFFFF, ver));
788 }
789 validate!(size >= 10);
790 let ver = src.read_u16be()?;
791 validate!(ver <= 2);
792 Ok((id, size, ver))
793 }
794
795 #[derive(Clone,Copy,Debug)]
796 struct InterleaveInfo {
797 id: u32,
798 factor: u16,
799 block_size: u16,
800 frame_size: u16,
801 }
802
803 #[derive(Clone,Copy,Debug)]
804 #[allow(dead_code)]
805 struct RealAudioInfo {
806 fcc: u32,
807 sample_rate: u32,
808 sample_size: u16,
809 flavor: u16,
810 channels: u16,
811 channel_mask: u32,
812 granularity: u32,
813 bytes_per_minute: u32,
814 total_bytes: u32,
815 edata_size: u32,
816 ileave_info: Option<InterleaveInfo>
817 }
818
819 impl RealAudioInfo {
820 fn get_duration(&self, base: u32) -> u64 {
821 if self.bytes_per_minute != 0 {
822 u64::from(self.total_bytes) * 60 * u64::from(base) / u64::from(self.bytes_per_minute)
823 } else {
824 0
825 }
826 }
827 }
828
829 fn skip_ra_metadata(src: &mut ByteReader) -> DemuxerResult<()> {
830 let title_len = src.read_byte()? as usize;
831 src.read_skip(title_len)?;
832 let author_len = src.read_byte()? as usize;
833 src.read_skip(author_len)?;
834 let copywrong_len = src.read_byte()? as usize;
835 src.read_skip(copywrong_len)?;
836 let comment_len = src.read_byte()? as usize;
837 src.read_skip(comment_len)?;
838 Ok(())
839 }
840
841 #[allow(unused_variables)]
842 fn parse_aformat3(src: &mut ByteReader) -> DemuxerResult<RealAudioInfo> {
843 let start = src.tell();
844 let header_len = src.read_u16be()?;
845 validate!(header_len >= 24);
846 let flavor = src.read_u16be()?;
847 let granularity = src.read_u32be()?;
848 let bytes_per_minute = src.read_u32be()?;
849 let total_bytes = src.read_u32be()?;
850
851 skip_ra_metadata(src)?;
852
853 // the original RealAudio has no such fields
854 let fcc = if src.tell() != start + u64::from(header_len) + 2 {
855 let _can_copy = src.read_byte()?;
856 let fcc_len = src.read_byte()?;
857 validate!(fcc_len == 0 || fcc_len == 4);
858 src.read_u32be()?
859 } else {
860 read_u32be(b"lpcJ")?
861 };
862
863 let end = src.tell();
864 validate!(end - start <= (header_len as u64) + 2);
865
866 Ok(RealAudioInfo {
867 fcc, flavor,
868 sample_rate: 8000, sample_size: 16, channels: 1, channel_mask: 0,
869 granularity, bytes_per_minute,
870 total_bytes, edata_size: 0,
871 ileave_info: None,
872 })
873 }
874
875 #[allow(unused_variables)]
876 fn parse_aformat4(src: &mut ByteReader) -> DemuxerResult<RealAudioInfo> {
877 let start = src.tell();
878 src.read_skip(2)?; // zeroes
879 let id = src.read_u32be()?;
880 validate!(id == mktag!(b".ra4"));
881 let data_size = src.read_u32be()?;
882 let _ver4 = src.read_u16be()?; // should be 4
883 let header_size = src.read_u32be()?;
884 let flavor = src.read_u16be()?;
885 let granularity = src.read_u32be()?;
886 let total_bytes = src.read_u32be()?;
887 let bytes_per_minute = src.read_u32be()?;
888 let _bytes_per_minute2 = src.read_u32be()?;
889 let ileave_factor = src.read_u16be()?;
890 let ileave_block_size = src.read_u16be()?;
891 let _user_data = src.read_u16be()?;
892 let sample_rate = src.read_u32be()?;
893 let sample_size = src.read_u32be()?;
894 let channels = src.read_u16be()?;
895 let interleaver_id_len = src.read_byte()?;
896 validate!(interleaver_id_len == 4);
897 let interleaver_id = src.read_u32be()?;
898 let fcc_len = src.read_byte()?;
899 validate!(fcc_len == 4);
900 let fcc = src.read_u32be()?;
901 let is_interleaved = src.read_byte()?;
902 let _can_copy = src.read_byte()?;
903 let _stream_type = src.read_byte()?;
904
905 skip_ra_metadata(src)?;
906
907 let end = src.tell();
908 validate!(end - start <= (header_size as u64) + 10);
909
910 let ileave_info = if is_interleaved != 0 {
911 Some(InterleaveInfo {
912 id: interleaver_id, factor: ileave_factor, block_size: granularity as u16,
913 frame_size: ileave_block_size,
914 })
915 } else {
916 None
917 };
918
919 Ok(RealAudioInfo {
920 fcc, flavor,
921 sample_rate, sample_size: sample_size as u16, channels, channel_mask: 0,
922 granularity, bytes_per_minute,
923 total_bytes: total_bytes & 0xFFFFFF, edata_size: 0,
924 ileave_info,
925 })
926 }
927
928 #[allow(unused_variables)]
929 fn parse_aformat5(src: &mut ByteReader) -> DemuxerResult<RealAudioInfo> {
930 let start = src.tell();
931 src.read_skip(2)?; // zeroes
932 let id = src.read_u32be()?;
933 validate!((id == mktag!(b".ra5")) || (id == mktag!(b".ra4")));
934 let data_size = src.read_u32be()?;
935 let _ver5 = src.read_u16be()?; // should be 5
936 let header_size = src.read_u32be()?;
937 let flavor = src.read_u16be()?;
938 let granularity = src.read_u32be()?;
939 let total_bytes = src.read_u32be()?;
940 let bytes_per_minute = src.read_u32be()?;
941 let _bytes_per_minute2 = src.read_u32be()?;
942 let ileave_factor = src.read_u16be()?;
943 let frame_size = src.read_u16be()?;
944 let ileave_block_size = src.read_u16be()?;
945 let user_data = src.read_u32be()?;
946 let _sample_rate1 = src.read_u16be()?;
947 let sample_rate = src.read_u32be()?;
948 let sample_size = src.read_u32be()?;
949 let channels = src.read_u16be()?;
950 let interleaver_id = src.read_u32be()?;
951 let fcc = src.read_u32be()?;
952 let is_interleaved = src.read_byte()?;
953 let _can_copy = src.read_byte()?;
954 let _stream_type = src.read_byte()?;
955 let has_ileave_pattern = src.read_byte()?;
956 if has_ileave_pattern != 0 {
957 unimplemented!("ra5 interleave pattern");
958 }
959 let mut edata_size = src.read_u32be()?;
960 let end = src.tell();
961 if id == mktag!(b".ra5") {
962 validate!(end - start <= (header_size as u64) + 10);
963 // src.read_skip(((end - start) as usize) - (header_size as usize) - 10)?;
964 } else {
965 validate!(end - start <= (header_size as u64) + 15);
966 }
967
968 let ileave_info = if is_interleaved != 0 {
969 Some(InterleaveInfo {
970 id: interleaver_id, factor: ileave_factor, block_size: ileave_block_size, frame_size,
971 })
972 } else {
973 None
974 };
975 if (fcc == mktag!(b"raac")) || (fcc == mktag!(b"racp")) {
976 validate!(edata_size > 1);
977 edata_size -= 1;
978 src.read_skip(1)?;
979 }
980
981 Ok(RealAudioInfo {
982 fcc, flavor,
983 sample_rate, sample_size: sample_size as u16, channels, channel_mask: 0,
984 granularity, bytes_per_minute,
985 total_bytes: total_bytes & 0xFFFFFF, edata_size,
986 ileave_info,
987 })
988 }
989
990 const RMVB_HDR_SIZE: u32 = 18;
991 const RMVB_PROP_SIZE: u32 = 50;
992 const KEYFRAME_FLAG: u8 = 0x02;
993
994 impl<'a> RealMediaDemuxer<'a> {
995 fn new(io: &'a mut ByteReader<'a>) -> Self {
996 RealMediaDemuxer {
997 src: io,
998 data_pos: 0,
999 data_end: 0,
1000 next_data: 0,
1001 data_ver: 0,
1002 num_packets: 0,
1003 cur_packet: 0,
1004 str_data: CommonStreamData::new(),
1005 data_chunks: Vec::new(),
1006 cur_data_chunk: 0,
1007 queued_pkts: Vec::new(),
1008 slice_buf: Vec::new(),
1009 }
1010 }
1011 #[allow(unused_variables)]
1012 fn read_header(&mut self, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex) -> DemuxerResult<()> {
1013 let (id, size, ver) = read_chunk(self.src)?;
1014 validate!((id == mktag!(b".RMF")) || (id == mktag!(b".RMP")));
1015 validate!(size >= RMVB_HDR_SIZE);
1016 let fver = self.src.read_u32be()?;
1017 validate!(fver <= 1);
1018 let num_hdr = self.src.read_u32be()? as usize;
1019 validate!(num_hdr >= 1);
1020 if size > RMVB_HDR_SIZE {
1021 self.src.read_skip((size - RMVB_HDR_SIZE) as usize)?;
1022 }
1023
1024 let (id, size, ver) = read_chunk(self.src)?;
1025 let prop_size = if ver == 0 { RMVB_PROP_SIZE } else { RMVB_PROP_SIZE + 4 };
1026 validate!(size >= prop_size);
1027 validate!((ver == 0) || (ver == 2));
1028 let maxbr = self.src.read_u32be()?;
1029 let avgbr = self.src.read_u32be()?;
1030 let maxps = self.src.read_u32be()?;
1031 let avgps = self.src.read_u32be()?;
1032 let num_pkt = self.src.read_u32be()? as usize;
1033 let duration = self.src.read_u32be()?;
1034 let preroll = self.src.read_u32be()?;
1035 let idx_off = self.src.read_size(ver)?;
1036 let data_off = self.src.read_u32be()?;
1037 let num_streams = self.src.read_u16be()? as usize;
1038 let flags = self.src.read_u16be()?;
1039 if size > prop_size {
1040 self.src.read_skip((size - prop_size) as usize)?;
1041 }
1042
1043 for _ in 0..num_hdr {
1044 if self.src.is_eof() {
1045 //warn maybe?
1046 break;
1047 }
1048 let res = self.parse_chunk(strmgr, seek_idx);
1049 match res {
1050 Ok(last) => { if last { break; } },
1051 Err(DemuxerError::IOError) => { break; },
1052 Err(etype) => {
1053 if self.data_chunks.is_empty() { // data is not found, report error
1054 return Err(etype);
1055 }
1056 },
1057 };
1058 }
1059 validate!(!self.data_chunks.is_empty());
1060 self.cur_data_chunk = 0;
1061 let (pos, size, ver) = self.data_chunks[self.cur_data_chunk];
1062 self.data_pos = pos;
1063 self.data_ver = ver;
1064 self.data_end = pos + (size as u64);
1065 self.src.seek(SeekFrom::Start(self.data_pos + 10))?;
1066 self.parse_data_start()?;
1067 Ok(())
1068 }
1069 fn parse_data_start(&mut self) -> DemuxerResult<()> {
1070 let num_packets = self.src.read_u32be()?;
1071 if self.data_ver == 2 {
1072 self.src.read_skip(12)?; // zeroes?
1073 }
1074 let next_data_hdr = self.src.read_u32be()?;
1075 self.num_packets = if num_packets > 0 { num_packets } else { 0xFFFFFF };
1076 self.cur_packet = 0;
1077 self.next_data = next_data_hdr as u64;
1078 Ok(())
1079 }
1080 fn parse_chunk(&mut self, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex) -> DemuxerResult<bool> {
1081 let (id, size, ver) = read_chunk(self.src)?;
1082 let end_pos = self.src.tell() - 10 + (size as u64);
1083
1084 validate!((ver == 0) || (ver == 2));
1085 if id == mktag!(b"CONT") { self.parse_content_desc()?; }
1086 else if id == mktag!(b"MDPR") { self.parse_mdpr(strmgr)?; }
1087 else if id == mktag!(b"DATA") {
1088 self.data_chunks.push((self.src.tell() - 10, size, ver));
1089 }
1090 else if id == mktag!(b"INDX") {
1091 if !seek_idx.skip_index {
1092 self.parse_index(seek_idx, (size as usize) - 10, ver)?;
1093 }
1094 }
1095 else if id == 0 { return Ok(true); }
1096 else { println!("unknown chunk type {:08X}", id); }
1097
1098 let cpos = self.src.tell();
1099 if cpos < end_pos {
1100 self.src.read_skip((end_pos - cpos) as usize)?;
1101 }
1102 Ok(false)
1103 }
1104 #[allow(unused_variables)]
1105 fn parse_content_desc(&mut self) -> DemuxerResult<()> {
1106 let title_len = self.src.read_u16be()? as usize;
1107 self.src.read_skip(title_len)?;
1108 let author_len = self.src.read_u16be()? as usize;
1109 self.src.read_skip(author_len)?;
1110 let copywrong_len = self.src.read_u16be()? as usize;
1111 self.src.read_skip(copywrong_len)?;
1112 let comment_len = self.src.read_u16be()? as usize;
1113 self.src.read_skip(comment_len)?;
1114 Ok(())
1115 }
1116 #[allow(unused_variables)]
1117 fn parse_mdpr(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
1118 let stream_no = self.src.read_u16be()? as u32;
1119 //todo check stream_no for duplicates
1120 let maxbr = self.src.read_u32be()?;
1121 let avgbr = self.src.read_u32be()?;
1122 let maxps = self.src.read_u32be()?;
1123 let avgps = self.src.read_u32be()?;
1124 let start = self.src.read_u32be()?;
1125 let preroll = self.src.read_u32be()?;
1126 let duration = self.src.read_u32be()?;
1127 let sname_size = self.src.read_byte()? as usize;
1128 let sname = read_string_size(self.src, sname_size)?;
1129 let mime_size = self.src.read_byte()? as usize;
1130 let mime = read_string_size(self.src, mime_size)?;
1131 let edata_size = self.src.read_u32be()? as usize;
1132 let edata: Option<Vec<u8>> = if edata_size == 0 { None } else {
1133 let mut edvec: Vec<u8> = vec![0; edata_size];
1134 self.src.read_buf(&mut edvec)?;
1135 Some(edvec)
1136 };
1137 let mut is_mlti = false;
1138 if edata_size > 8 {
1139 if let Some(edata_) = edata {
1140 is_mlti = RMDemuxCommon::parse_stream_info(&mut self.str_data, strmgr, stream_no, &edata_, duration)?;
1141 }
1142 } else {
1143 self.str_data.streams.push(RMStreamType::Unknown);
1144 }
1145 if !is_mlti {
1146 self.str_data.str_ids.push(stream_no);
1147 }
1148
1149 Ok(())
1150 }
1151 fn parse_index(&mut self, seek_idx: &mut SeekIndex, chunk_size: usize, ver: u16) -> DemuxerResult<()> {
1152 if ver != 0 && ver != 2 { return Ok(()); }
1153 let num_entries = self.src.read_u32be()? as usize;
1154 let str_id = self.src.read_u16be()? as u32;
1155 let _next_idx = self.src.read_size(ver)?;
1156 if ver == 0 {
1157 validate!(chunk_size == num_entries * 14 + 10);
1158 } else {
1159 validate!(chunk_size == num_entries * 18 + 14);
1160 }
1161 if num_entries == 0 { return Ok(()); }
1162
1163 seek_idx.add_stream(str_id);
1164 let idx = seek_idx.get_stream_index(str_id).unwrap();
1165 for _ in 0..num_entries {
1166 let iver = self.src.read_u16be()?;
1167 validate!(iver == ver);
1168 let ts = self.src.read_u32be()? as u64;
1169 let pos = self.src.read_size(ver)?;
1170 let _pkt_no = self.src.read_u32be()?;
1171 idx.add_entry(SeekEntry { time: ts, pts: 0, pos });
1172 }
1173 idx.filled = true;
1174 seek_idx.mode = SeekIndexMode::Present;
1175 Ok(())
1176 }
1177 }
1178
1179 fn read_string_size(src: &mut ByteReader, size: usize) -> DemuxerResult<String> {
1180 let mut vec: Vec<u8> = Vec::new();
1181 for _ in 0..size {
1182 let c = src.read_byte()?;
1183 vec.push(c);
1184 }
1185 if let Ok(res) = String::from_utf8(vec) {
1186 Ok(res)
1187 } else {
1188 Ok(String::new())
1189 }
1190 }
1191
1192 struct RealAudioDemuxer<'a> {
1193 src: &'a mut ByteReader<'a>,
1194 stream: Option<RMAudioStream>,
1195 data_start: u64,
1196 data_end: u64,
1197 blk_size: usize,
1198 queued_pkts: Vec<NAPacket>,
1199 }
1200
1201 impl<'a> DemuxCore<'a> for RealAudioDemuxer<'a> {
1202 #[allow(unused_variables)]
1203 fn open(&mut self, strmgr: &mut StreamManager, _seek_idx: &mut SeekIndex) -> DemuxerResult<()> {
1204 let magic = self.src.read_u32be()?;
1205 validate!(magic == mktag!(b".ra\xFD"));
1206 let ver = self.src.read_u16be()?;
1207 let ainfo = match ver {
1208 3 => {
1209 parse_aformat3(self.src)?
1210 },
1211 4 => {
1212 parse_aformat4(self.src)?
1213 },
1214 5 => {
1215 parse_aformat5(self.src)?
1216 },
1217 _ => {
1218 println!("unknown version {}", ver);
1219 return Err(DemuxerError::InvalidData);
1220 },
1221 };
1222 let cname = find_codec_name(RM_AUDIO_CODEC_REGISTER, ainfo.fcc);
1223 let blk_size = if ainfo.fcc != mktag!(b"sipr") {
1224 ainfo.granularity as usize
1225 } else {
1226 validate!(ainfo.flavor <= 3);
1227 RM_SIPRO_BLOCK_SIZES[ainfo.flavor as usize]
1228 };
1229 let srate = ainfo.sample_rate;
1230 let soniton = NASoniton::new(ainfo.sample_size as u8, SONITON_FLAG_SIGNED);
1231 let ahdr = NAAudioInfo::new(srate, ainfo.channels as u8, soniton, blk_size);
1232 let extradata = if ainfo.edata_size == 0 {
1233 None
1234 } else {
1235 let mut dta: Vec<u8> = vec![0; ainfo.edata_size as usize];
1236 self.src.read_buf(dta.as_mut_slice())?;
1237 Some(dta)
1238 };
1239 let nainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), extradata);
1240 let res = strmgr.add_stream(NAStream::new(StreamType::Audio, 0, nainfo, 1, srate, ainfo.get_duration(ainfo.sample_rate)));
1241 if res.is_none() { return Err(MemoryError); }
1242
1243 let astr = RMAudioStream::new(ainfo.ileave_info);
1244 self.data_start = self.src.tell();
1245 self.data_end = if ainfo.total_bytes > 0 { self.src.tell() + (ainfo.total_bytes as u64) } else { 0 };
1246 self.blk_size = blk_size;
1247 self.stream = Some(astr);
1248
1249 Ok(())
1250 }
1251
1252 fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
1253 if !self.queued_pkts.is_empty() {
1254 let mut pkt = self.queued_pkts.pop().unwrap();
1255 pkt.ts.pts = None;
1256 return Ok(pkt);
1257 }
1258 if (self.data_end != 0) && (self.src.tell() >= self.data_end) {
1259 return Err(DemuxerError::EOF);
1260 }
1261 let streamres = strmgr.get_stream_by_id(0);
1262 let stream = streamres.unwrap();
1263 if let Some(ref mut astr) = self.stream {
1264 loop {
1265 let mut ret = astr.read_apackets(&mut self.queued_pkts, self.src, stream.clone(), 0, false, self.blk_size);
1266 if let Err(DemuxerError::TryAgain) = ret {
1267 continue;
1268 }
1269 if let Ok(ref mut pkt) = ret {
1270 pkt.ts.pts = None;
1271 }
1272 return ret;
1273 }
1274 }
1275 Err(DemuxerError::NoSuchInput)
1276 }
1277
1278 #[allow(unused_variables)]
1279 fn seek(&mut self, time: NATimePoint, seek_idx: &SeekIndex) -> DemuxerResult<()> {
1280 Err(NotImplemented)
1281 }
1282
1283 fn get_duration(&self) -> u64 { 0 }
1284 }
1285
1286 impl<'a> NAOptionHandler for RealAudioDemuxer<'a> {
1287 fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
1288 fn set_options(&mut self, _options: &[NAOption]) { }
1289 fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
1290 }
1291
1292 impl<'a> RealAudioDemuxer<'a> {
1293 fn new(io: &'a mut ByteReader<'a>) -> Self {
1294 RealAudioDemuxer {
1295 src: io,
1296 data_start: 0,
1297 data_end: 0,
1298 blk_size: 0,
1299 stream: None,
1300 queued_pkts: Vec::new(),
1301 }
1302 }
1303 }
1304
1305 enum IVRRecord {
1306 Invalid(u8),
1307 StreamProperties(usize),
1308 Packet { ts: u32, strm: u32, flags: u32, len: usize, checksum: u32 },
1309 IntValue(Vec<u8>, u32),
1310 BinaryData(Vec<u8>, Vec<u8>),
1311 StringData(Vec<u8>, Vec<u8>),
1312 HeaderEnd,
1313 DataStart,
1314 DataEnd,
1315 }
1316
1317 impl IVRRecord {
1318 fn read_string(src: &mut ByteReader) -> DemuxerResult<Vec<u8>> {
1319 let len = src.read_u32be()? as usize;
1320 let mut val = vec![0; len];
1321 src.read_buf(val.as_mut_slice())?;
1322 Ok(val)
1323 }
1324
1325 fn read(src: &mut ByteReader) -> DemuxerResult<Self> {
1326 let code = src.read_byte()?;
1327 match code {
1328 1 => {
1329 let val = src.read_u32be()? as usize;
1330 Ok(IVRRecord::StreamProperties(val))
1331 },
1332 2 => {
1333 let ts = src.read_u32be()?;
1334 let strm = src.read_u16be()? as u32;
1335 let flags = src.read_u32be()?;
1336 let len = src.read_u32be()? as usize;
1337 let chk = src.read_u32be()?;
1338 validate!((len > 0) && (len < (1 << 24)));
1339 Ok(IVRRecord::Packet { ts, strm, flags, len, checksum: chk })
1340 },
1341 3 => {
1342 let name = Self::read_string(src)?;
1343 let len = src.read_u32be()?;
1344 validate!(len == 4);
1345 let val = src.read_u32be()?;
1346 Ok(IVRRecord::IntValue(name, val))
1347 },
1348 4 => {
1349 let name = Self::read_string(src)?;
1350 let len = src.read_u32be()? as usize;
1351 let mut val = vec![0; len];
1352 src.read_buf(val.as_mut_slice())?;
1353 Ok(IVRRecord::BinaryData(name, val))
1354 },
1355 5 => {
1356 let name = Self::read_string(src)?;
1357 let val = Self::read_string(src)?;
1358 Ok(IVRRecord::StringData(name, val))
1359 },
1360 6 => Ok(IVRRecord::HeaderEnd),
1361 7 => {
1362 src.read_skip(8)?; // always zero?
1363 Ok(IVRRecord::DataEnd)
1364 },
1365 8 => {
1366 src.read_skip(8)?; // always zero?
1367 Ok(IVRRecord::DataStart)
1368 },
1369 _ => Ok(IVRRecord::Invalid(code)),
1370 }
1371 }
1372 fn is_data_start(&self) -> bool {
1373 matches!(*self, IVRRecord::DataStart)
1374 }
1375 }
1376
1377 impl fmt::Display for IVRRecord {
1378 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
1379 match *self {
1380 IVRRecord::Invalid(typ) => write!(f, "Invalid({:02X})", typ),
1381 IVRRecord::StreamProperties(num) =>
1382 write!(f, "({} stream properties)", num),
1383 IVRRecord::Packet { ts, strm, flags, len, checksum } =>
1384 write!(f, "paket({}, {}, {:X}, {}, {})", ts, strm, flags, len, checksum),
1385 IVRRecord::IntValue(ref name, val) =>
1386 write!(f, "({} = {})", String::from_utf8_lossy(name), val),
1387 IVRRecord::BinaryData(ref name, ref val) =>
1388 write!(f, "({} = {} bytes)", String::from_utf8_lossy(name), val.len()),
1389 IVRRecord::StringData(ref name, ref val) =>
1390 write!(f, "({} = {})", String::from_utf8_lossy(name), String::from_utf8_lossy(val)),
1391 IVRRecord::HeaderEnd => write!(f, "header end"),
1392 IVRRecord::DataEnd => write!(f, "data end"),
1393 IVRRecord::DataStart => write!(f, "data start"),
1394 }
1395 }
1396 }
1397
1398 struct RecordDemuxer {
1399 start_pos: u64,
1400 cur_pos: u64,
1401 start_str: u32,
1402 remap_ids: Vec<u32>,
1403 }
1404
1405 impl RecordDemuxer {
1406 fn new(pos: u64, start_str: u32) -> Self {
1407 RecordDemuxer {
1408 start_pos: pos,
1409 cur_pos: pos,
1410 start_str,
1411 remap_ids: Vec::new(),
1412 }
1413 }
1414 fn parse_header(&mut self, src: &mut ByteReader, strmgr: &mut StreamManager, str_data: &mut CommonStreamData) -> DemuxerResult<()> {
1415 src.seek(SeekFrom::Start(self.cur_pos))?;
1416 let magic = src.read_u32be()?;
1417 validate!(magic == mktag!(b".REC"));
1418 let _smth = src.read_byte()?;
1419 let num_entries = src.read_u32be()? as usize;
1420 for _ in 0..num_entries {
1421 let _rec = IVRRecord::read(src)?;
1422 }
1423 let mut has_seek_table = false;
1424 let mut cur_str_no = 0;
1425 loop {
1426 let rec = IVRRecord::read(src)?;
1427 match rec {
1428 IVRRecord::HeaderEnd => { break; },
1429 IVRRecord::StreamProperties(num) => {
1430 let stream_no = cur_str_no + self.start_str;
1431 cur_str_no += 1;
1432 let mut parsed = false;
1433 let mut real_stream_no = 0;
1434 let mut duration = 0;
1435 for _ in 0..num {
1436 let rec = IVRRecord::read(src)?;
1437 match rec {
1438 IVRRecord::IntValue(ref name, val) => {
1439 if name == b"StreamNumber\0" {
1440 real_stream_no = val;
1441 }
1442 if name == b"Duration\0" {
1443 duration = val;
1444 }
1445 },
1446 IVRRecord::BinaryData(ref name, ref val) => {
1447 if name == b"OpaqueData\0" {
1448 validate!(!parsed);
1449 let is_mlti = RMDemuxCommon::parse_stream_info(str_data, strmgr, stream_no, val, duration)?;
1450 if !is_mlti {
1451 str_data.str_ids.push(stream_no);
1452 }
1453 parsed = true;
1454 }
1455 },
1456 IVRRecord::StringData(ref name, ref val) => {
1457 if (name == b"SeekType\0") && (val != b"None\0") {
1458 has_seek_table = true;
1459 }
1460 },
1461 _ => { return Err(DemuxerError::InvalidData); }
1462 };
1463 }
1464 if !parsed {
1465 str_data.streams.push(RMStreamType::Unknown);
1466 str_data.str_ids.push(stream_no);
1467 }
1468 self.remap_ids.push(real_stream_no);
1469 },
1470 _ => {println!(" unexpected {}", rec); return Err(DemuxerError::InvalidData); }
1471 };
1472 }
1473 let off0 = src.read_u32be()? as u64;
1474 let _off1 = src.read_u32be()?;
1475 let _off2 = src.read_u32be()?;
1476 validate!(off0 + self.start_pos == src.tell());
1477 if has_seek_table {
1478 src.read_skip(4)?;
1479 let data_off = src.read_u32be()? as u64;
1480 let pos = src.tell();
1481 validate!(data_off + self.start_pos > pos);
1482 src.read_skip((data_off + self.start_pos - pos) as usize)?;
1483 let rec = IVRRecord::read(src)?;
1484 validate!(rec.is_data_start());
1485 } else {
1486 let ntype = src.peek_byte()?;
1487 validate!((ntype == 2) || (ntype == 7)); // packet or data end, no start
1488 }
1489
1490 self.cur_pos = src.tell();
1491
1492 Ok(())
1493 }
1494 fn get_packet(&mut self, src: &mut ByteReader, str_data: &mut CommonStreamData, strmgr: &StreamManager, queued_pkts: &mut Vec<NAPacket>, slice_buf: &mut Vec<u8>) -> DemuxerResult<NAPacket> {
1495 src.seek(SeekFrom::Start(self.cur_pos))?;
1496 loop {
1497 let rec = IVRRecord::read(src)?;
1498 match rec {
1499 IVRRecord::Packet { ts, strm, flags, len, .. } => {
1500 let payload_size = len;
1501 let sr = self.remap_ids.iter().position(|x| *x == strm);
1502 validate!(sr.is_some());
1503 let str_no = self.start_str + (sr.unwrap() as u32);
1504 let pkt_grp = ((flags >> 8) & 0xFF) as u16;
1505 let stream_id = str_data.get_stream_id(str_no as u32, pkt_grp);
1506 let sr = str_data.find_stream(stream_id);
1507 if sr.is_none() {
1508 src.read_skip(payload_size)?;
1509 return Err(DemuxerError::InvalidData);
1510 }
1511 let str_id = sr.unwrap();
1512
1513 let streamres = strmgr.get_stream_by_id(stream_id);
1514 if streamres.is_none() {
1515 src.read_skip(payload_size)?;
1516 continue;
1517 }
1518 let stream = streamres.unwrap();
1519 if strmgr.is_ignored_id(stream_id) {
1520 src.read_skip(payload_size)?;
1521 continue;
1522 }
1523 let keyframe = false;
1524 let ret = RMDemuxCommon::parse_packet_payload(src, &mut str_data.streams[str_id], stream, slice_buf, queued_pkts, keyframe, ts, payload_size);
1525 if let Err(DemuxerError::TryAgain) = ret {
1526 continue;
1527 } else {
1528 self.cur_pos = src.tell();
1529 return ret;
1530 }
1531 },
1532 IVRRecord::DataEnd => return Err(DemuxerError::EOF),
1533 _ => return Err(DemuxerError::InvalidData),
1534 }
1535 }
1536 }
1537 }
1538
1539 struct RealIVRDemuxer<'a> {
1540 src: &'a mut ByteReader<'a>,
1541 recs: Vec<RecordDemuxer>,
1542 cur_rec: usize,
1543 queued_pkts: Vec<NAPacket>,
1544 slice_buf: Vec<u8>,
1545 str_data: CommonStreamData,
1546 }
1547
1548 impl<'a> DemuxCore<'a> for RealIVRDemuxer<'a> {
1549 #[allow(unused_variables)]
1550 fn open(&mut self, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex) -> DemuxerResult<()> {
1551 let magic = self.src.peek_u32be()?;
1552 if magic == mktag!(b".REC") {
1553 let mut rec = RecordDemuxer::new(0, 0);
1554 rec.parse_header(self.src, strmgr, &mut self.str_data)?;
1555 self.recs.push(rec);
1556 } else if magic == mktag!(b".R1M") {
1557 self.src.read_skip(4)?; // magic
1558 self.src.read_skip(3)?; // always 0, 1, 1 ?
1559 let _name = IVRRecord::read_string(self.src)?;
1560 self.src.read_skip(1)?; // always 0?
1561 let len1 = self.src.read_u32be()? as u64;
1562 let off1 = self.src.read_u64be()?;
1563 let cpos = self.src.tell();
1564 validate!(off1 == len1 + cpos - 8);
1565 self.src.read_skip((off1 - cpos) as usize)?;
1566 loop {
1567 let typ = self.src.read_byte()?;
1568 match typ {
1569 1 => {
1570 let len = self.src.read_u32be()?;
1571 self.src.read_skip(len as usize)?;
1572 },
1573 2 => {
1574 let len = self.src.read_u32be()? as u64;
1575 let pos = self.src.tell();
1576 if len > 0x20 {
1577 let num_streams = self.str_data.streams.len() as u32;
1578 let mut rec = RecordDemuxer::new(pos + 12, num_streams);
1579 rec.parse_header(self.src, strmgr, &mut self.str_data)?;
1580 self.recs.push(rec);
1581 }
1582 self.src.seek(SeekFrom::Start(pos + len))?;
1583 },
1584 b'R' => {
1585 let mut buf: [u8; 2] = [0; 2];
1586 self.src.peek_buf(&mut buf)?;
1587 if (buf[0] == b'J') && (buf[1] == b'M') { // RJMx markers at the end of file
1588 break;
1589 } else {
1590 return Err(DemuxerError::InvalidData);
1591 }
1592 },
1593 _ => { return Err(DemuxerError::InvalidData); },
1594 };
1595 }
1596 } else {
1597 return Err(DemuxerError::InvalidData);
1598 }
1599
1600 Ok(())
1601 }
1602
1603 fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
1604 if !self.queued_pkts.is_empty() {
1605 let pkt = self.queued_pkts.pop().unwrap();
1606 return Ok(pkt);
1607 }
1608 loop {
1609 if self.cur_rec >= self.recs.len() { return Err(DemuxerError::EOF); }
1610 let res = self.recs[self.cur_rec].get_packet(self.src, &mut self.str_data, strmgr, &mut self.queued_pkts, &mut self.slice_buf);
1611 if let Err(DemuxerError::EOF) = res {
1612 self.cur_rec += 1;
1613 } else {
1614 return res;
1615 }
1616 }
1617 }
1618
1619 #[allow(unused_variables)]
1620 fn seek(&mut self, time: NATimePoint, seek_idx: &SeekIndex) -> DemuxerResult<()> {
1621 Err(NotImplemented)
1622 }
1623
1624 fn get_duration(&self) -> u64 { 0 }
1625 }
1626
1627 impl<'a> NAOptionHandler for RealIVRDemuxer<'a> {
1628 fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
1629 fn set_options(&mut self, _options: &[NAOption]) { }
1630 fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
1631 }
1632
1633 impl<'a> RealIVRDemuxer<'a> {
1634 fn new(io: &'a mut ByteReader<'a>) -> Self {
1635 RealIVRDemuxer {
1636 src: io,
1637 recs: Vec::new(),
1638 cur_rec: 0,
1639 queued_pkts: Vec::new(),
1640 slice_buf: Vec::new(),
1641 str_data: CommonStreamData::new(),
1642 }
1643 }
1644 }
1645
1646 static RM_VIDEO_CODEC_REGISTER: &[(&[u8;4], &str)] = &[
1647 (b"RV10", "realvideo1"),
1648 (b"RV20", "realvideo2"),
1649 (b"RVTR", "realvideo2"),
1650 (b"RV30", "realvideo3"),
1651 (b"RV40", "realvideo4"),
1652 (b"RV60", "realvideo6"),
1653 (b"CLV1", "clearvideo_rm"),
1654 ];
1655
1656 static RM_AUDIO_CODEC_REGISTER: &[(&[u8;4], &str)] = &[
1657 (b"lpcJ", "ra14.4"),
1658 (b"28_8", "ra28.8"),
1659 (b"cook", "cook"),
1660 (b"dnet", "ac3"),
1661 (b"sipr", "sipro"),
1662 (b"atrc", "atrac3"),
1663 (b"LSD:", "ralf"),
1664 (b"raac", "aac"),
1665 (b"racp", "aac"),
1666 ];
1667
1668 pub struct RealMediaDemuxerCreator { }
1669
1670 impl DemuxerCreator for RealMediaDemuxerCreator {
1671 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
1672 Box::new(RealMediaDemuxer::new(br))
1673 }
1674 fn get_name(&self) -> &'static str { "realmedia" }
1675 }
1676
1677 pub struct RealAudioDemuxerCreator { }
1678
1679 impl DemuxerCreator for RealAudioDemuxerCreator {
1680 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
1681 Box::new(RealAudioDemuxer::new(br))
1682 }
1683 fn get_name(&self) -> &'static str { "realaudio" }
1684 }
1685
1686 pub struct RealIVRDemuxerCreator { }
1687
1688 impl DemuxerCreator for RealIVRDemuxerCreator {
1689 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
1690 Box::new(RealIVRDemuxer::new(br))
1691 }
1692 fn get_name(&self) -> &'static str { "real_ivr" }
1693 }
1694
1695 #[cfg(test)]
1696 mod test {
1697 use super::*;
1698 use std::fs::File;
1699
1700 #[test]
1701 fn test_rm_demux() {
1702 // sample from a private collection
1703 let mut file =
1704 File::open("assets/RV/rv10_dnet_640x352_realvideo_encoder_4.0.rm").unwrap();
1705 // File::open("assets/RV/rv20_cook_640x352_realproducer_plus_8.51.rm").unwrap();
1706 // File::open("assets/RV/rv20_svt_atrc_640x352_realproducer_plus_8.51.rm").unwrap();
1707 // File::open("assets/RV/rv30_atrc_384x208_realproducer_plus_8.51.rm").unwrap();
1708 // File::open("assets/RV/rv30_chroma_drift.rm").unwrap();
1709 // File::open("assets/RV/rv30_weighted_mc.rm").unwrap();
1710 // File::open("assets/RV/rv40_weighted_mc.rmvb").unwrap();
1711 // File::open("assets/RV/rv40_weighted_mc_2.rmvb").unwrap();
1712 // File::open("assets/RV/clv1_sipr_384x208_realvideo_encoder_4.0.rm").unwrap();
1713 // File::open("assets/RV/luckynight.rmvb").unwrap();
1714 // File::open("assets/RV/rv40_ralf.rmvb").unwrap();
1715 let mut fr = FileReader::new_read(&mut file);
1716 let mut br = ByteReader::new(&mut fr);
1717 let mut dmx = RealMediaDemuxer::new(&mut br);
1718 let mut sm = StreamManager::new();
1719 let mut si = SeekIndex::new();
1720 dmx.open(&mut sm, &mut si).unwrap();
1721
1722 loop {
1723 let pktres = dmx.get_frame(&mut sm);
1724 if let Err(e) = pktres {
1725 if e == DemuxerError::EOF { break; }
1726 panic!("error");
1727 }
1728 let pkt = pktres.unwrap();
1729 println!("Got {}", pkt);
1730 }
1731 //panic!("the end");
1732 }
1733 #[test]
1734 fn test_ra_demux() {
1735 // sample: https://samples.mplayerhq.hu/real//RA/ra_with_comment_field/diemusik.ra
1736 let mut file =
1737 // File::open("assets/RV/welcome288.ra").unwrap();
1738 File::open("assets/RV/diemusik.ra").unwrap();
1739 let mut fr = FileReader::new_read(&mut file);
1740 let mut br = ByteReader::new(&mut fr);
1741 let mut dmx = RealAudioDemuxer::new(&mut br);
1742 let mut sm = StreamManager::new();
1743 let mut si = SeekIndex::new();
1744 dmx.open(&mut sm, &mut si).unwrap();
1745
1746 loop {
1747 let pktres = dmx.get_frame(&mut sm);
1748 if let Err(e) = pktres {
1749 if e == DemuxerError::EOF { break; }
1750 panic!("error");
1751 }
1752 let pkt = pktres.unwrap();
1753 println!("Got {}", pkt);
1754 }
1755 }
1756 #[test]
1757 fn test_ivr_demux() {
1758 // sample: https://samples.mplayerhq.hu/real/ivr/Opener_rm_hi.ivr
1759 let mut file =
1760 File::open("assets/RV/Opener_rm_hi.ivr").unwrap();
1761 // File::open("assets/RV/SherwinWilliamsCommercial.ivr").unwrap();
1762 let mut fr = FileReader::new_read(&mut file);
1763 let mut br = ByteReader::new(&mut fr);
1764 let mut dmx = RealIVRDemuxer::new(&mut br);
1765 let mut sm = StreamManager::new();
1766 let mut si = SeekIndex::new();
1767 dmx.open(&mut sm, &mut si).unwrap();
1768
1769 loop {
1770 let pktres = dmx.get_frame(&mut sm);
1771 if let Err(e) = pktres {
1772 if e == DemuxerError::EOF { break; }
1773 panic!("error");
1774 }
1775 let pkt = pktres.unwrap();
1776 println!("Got {}", pkt);
1777 }
1778 }
1779 }
NihAV is a research multimedia framework