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1 | use nihav_core::demuxers::*; | |
2 | use nihav_core::register; | |
3 | use nihav_core::demuxers::DemuxerError::*; | |
4 | ||
5 | macro_rules! mktag { | |
6 | ($a:expr, $b:expr, $c:expr, $d:expr) => ({ | |
7 | (($a as u32) << 24) | (($b as u32) << 16) | (($c as u32) << 8) | ($d as u32) | |
8 | }); | |
9 | ($arr:expr) => ({ | |
10 | (($arr[0] as u32) << 24) | (($arr[1] as u32) << 16) | (($arr[2] as u32) << 8) | ($arr[3] as u32) | |
11 | }); | |
12 | } | |
13 | ||
14 | struct StreamState { | |
15 | strm_no: u8, | |
16 | got_strf: bool, | |
17 | strm_type: Option<StreamType>, | |
18 | } | |
19 | ||
20 | impl StreamState { | |
21 | fn new() -> Self { | |
22 | StreamState { strm_no: 0, got_strf: true, strm_type: None } | |
23 | } | |
24 | fn reset(&mut self) { | |
25 | self.strm_type = None; | |
26 | self.got_strf = true; | |
27 | self.strm_no += 1; | |
28 | } | |
29 | fn valid_state(&self) -> bool { | |
30 | match self.strm_type { | |
31 | None => self.got_strf, | |
32 | _ => false, | |
33 | } | |
34 | } | |
35 | } | |
36 | ||
37 | #[allow(dead_code)] | |
38 | struct AVIDemuxer<'a> { | |
39 | src: &'a mut ByteReader<'a>, | |
40 | cur_frame: Vec<u64>, | |
41 | num_streams: u8, | |
42 | size: usize, | |
43 | movi_size: usize, | |
44 | sstate: StreamState, | |
45 | tb_num: u32, | |
46 | tb_den: u32, | |
47 | } | |
48 | ||
49 | #[derive(Debug,Clone,Copy,PartialEq)] | |
50 | enum RIFFTag { | |
51 | Chunk(u32), | |
52 | List(u32,u32), | |
53 | } | |
54 | ||
55 | struct RIFFParser { | |
56 | tag: RIFFTag, | |
57 | parse: fn(&mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize>, | |
58 | } | |
59 | ||
60 | impl<'a> DemuxCore<'a> for AVIDemuxer<'a> { | |
61 | #[allow(unused_variables)] | |
62 | fn open(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> { | |
63 | self.read_header(strmgr)?; | |
64 | Ok(()) | |
65 | } | |
66 | ||
67 | fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> { | |
68 | if self.movi_size == 0 { return Err(EOF); } | |
69 | let mut tag: [u8; 4] = [0; 4]; | |
70 | loop { | |
71 | if (self.src.tell() & 1) == 1 { | |
72 | self.src.read_skip(1)?; | |
73 | self.movi_size -= 1; | |
74 | if self.movi_size == 0 { return Err(EOF); } | |
75 | } | |
76 | self.src.read_buf(&mut tag)?; | |
77 | let size = self.src.read_u32le()? as usize; | |
78 | if mktag!(tag) == mktag!(b"JUNK") { | |
79 | self.movi_size -= size + 8; | |
80 | self.src.read_skip(size)?; | |
81 | if self.movi_size == 0 { return Err(EOF); } | |
82 | continue; | |
83 | } | |
84 | if mktag!(tag) == mktag!(b"LIST") { | |
85 | self.movi_size -= 12; | |
86 | self.src.read_skip(4)?; | |
87 | if self.movi_size == 0 { return Err(EOF); } | |
88 | continue; | |
89 | } | |
90 | if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' { | |
91 | return Err(InvalidData); | |
92 | } | |
93 | let stream_no = (tag[0] - b'0') * 10 + (tag[1] - b'0'); | |
94 | let str = strmgr.get_stream(stream_no as usize); | |
95 | if str.is_none() { return Err(InvalidData); } | |
96 | let stream = str.unwrap(); | |
97 | if size == 0 { | |
98 | self.movi_size -= 8; | |
99 | if self.movi_size == 0 { return Err(EOF); } | |
100 | continue; | |
101 | } | |
102 | let (tb_num, tb_den) = stream.get_timebase(); | |
103 | let ts = NATimeInfo::new(Some(self.cur_frame[stream_no as usize]), None, None, tb_num, tb_den); | |
104 | let pkt = self.src.read_packet(stream, ts, false, size)?; | |
105 | self.cur_frame[stream_no as usize] += 1; | |
106 | self.movi_size -= size + 8; | |
107 | ||
108 | return Ok(pkt); | |
109 | } | |
110 | } | |
111 | ||
112 | #[allow(unused_variables)] | |
113 | fn seek(&mut self, time: u64) -> DemuxerResult<()> { | |
114 | Err(NotImplemented) | |
115 | } | |
116 | } | |
117 | ||
118 | impl<'a> AVIDemuxer<'a> { | |
119 | fn new(io: &'a mut ByteReader<'a>) -> Self { | |
120 | AVIDemuxer { | |
121 | cur_frame: Vec::new(), | |
122 | num_streams: 0, | |
123 | src: io, | |
124 | size: 0, | |
125 | movi_size: 0, | |
126 | sstate: StreamState::new(), | |
127 | tb_num: 0, | |
128 | tb_den: 0, | |
129 | } | |
130 | } | |
131 | ||
132 | fn parse_chunk(&mut self, strmgr: &mut StreamManager, end_tag: RIFFTag, csize: usize, depth: u16) -> DemuxerResult<(usize, bool)> { | |
133 | if csize < 8 { return Err(InvalidData); } | |
134 | if depth > 42 { return Err(InvalidData); } | |
135 | ||
136 | let tag = self.src.read_u32be()?; | |
137 | let size = self.src.read_u32le()? as usize; | |
138 | if size > csize { return Err(InvalidData); } | |
139 | if RIFFTag::Chunk(tag) == end_tag { | |
140 | return Ok((size, true)); | |
141 | } | |
142 | let is_list = is_list_tag(tag); | |
143 | let ltag = if is_list { self.src.read_u32be()? } else { 0 }; | |
144 | if RIFFTag::List(tag, ltag) == end_tag { | |
145 | return Ok((size, true)); | |
146 | } | |
147 | ||
148 | for chunk in CHUNKS.iter() { | |
149 | if RIFFTag::Chunk(tag) == chunk.tag { | |
150 | let psize = (chunk.parse)(self, strmgr, size)?; | |
151 | if psize != size { return Err(InvalidData); } | |
152 | if (psize & 1) == 1 { self.src.read_skip(1)?; } | |
153 | return Ok((size + 8, false)); | |
154 | } | |
155 | if RIFFTag::List(tag, ltag) == chunk.tag { | |
156 | let mut rest_size = size - 4; | |
157 | let psize = (chunk.parse)(self, strmgr, rest_size)?; | |
158 | if psize > rest_size { return Err(InvalidData); } | |
159 | rest_size -= psize; | |
160 | while rest_size > 0 { | |
161 | let (psize, _) = self.parse_chunk(strmgr, end_tag, rest_size, depth+1)?; | |
162 | if psize > rest_size { return Err(InvalidData); } | |
163 | rest_size -= psize; | |
164 | if ((psize & 1) == 1) && (rest_size > 0) { | |
165 | rest_size -= 1; | |
166 | } | |
167 | } | |
168 | ||
169 | return Ok((size + 8, false)); | |
170 | } | |
171 | } | |
172 | if !is_list { | |
173 | self.src.read_skip(size)?; | |
174 | } else { | |
175 | if size < 4 { return Err(InvalidData); } | |
176 | self.src.read_skip(size - 4)?; | |
177 | } | |
178 | if (size & 1) == 1 { self.src.read_skip(1)?; } | |
179 | Ok((size + 8, false)) | |
180 | } | |
181 | ||
182 | fn read_header(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> { | |
183 | let riff_tag = self.src.read_u32be()?; | |
184 | let size = self.src.read_u32le()? as usize; | |
185 | let avi_tag = self.src.read_u32be()?; | |
186 | let mut matches = false; | |
187 | for rt in RIFF_TAGS.iter() { | |
188 | if rt[0] == riff_tag && rt[1] == avi_tag { | |
189 | matches = true; | |
190 | break; | |
191 | } | |
192 | } | |
193 | if !matches { | |
194 | return Err(InvalidData); | |
195 | } | |
196 | self.size = size; | |
197 | let mut rest_size = size; | |
198 | loop { | |
199 | let (csz, end) = self.parse_chunk(strmgr, RIFFTag::List(mktag!(b"LIST"), mktag!(b"movi")), rest_size,0)?; | |
200 | if end { self.movi_size = csz - 4; break; } | |
201 | rest_size -= csz; | |
202 | } | |
203 | if !self.sstate.valid_state() || self.sstate.strm_no != self.num_streams { | |
204 | return Err(InvalidData); | |
205 | } | |
206 | Ok(()) | |
207 | } | |
208 | ||
209 | fn read_extradata(&mut self, size: usize) -> DemuxerResult<Option<Vec<u8>>> { | |
210 | if size == 0 { return Ok(None); } | |
211 | let mut edvec: Vec<u8> = vec![0; size]; | |
212 | self.src.read_buf(&mut edvec)?; | |
213 | Ok(Some(edvec)) | |
214 | } | |
215 | } | |
216 | ||
217 | const RIFF_TAGS: &[[u32; 2]] = &[ | |
218 | [ mktag!(b"RIFF"), mktag!(b"AVI ") ], | |
219 | [ mktag!(b"RIFF"), mktag!(b"AVIX") ], | |
220 | [ mktag!(b"ON2 "), mktag!(b"ON2f") ], | |
221 | ]; | |
222 | ||
223 | const CHUNKS: [RIFFParser; 7] = [ | |
224 | RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"hdrl")), parse: parse_hdrl }, | |
225 | RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"strl")), parse: parse_strl }, | |
226 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"avih")), parse: parse_avih }, | |
227 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"ON2h")), parse: parse_avih }, | |
228 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strf")), parse: parse_strf }, | |
229 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strh")), parse: parse_strh }, | |
230 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"JUNK")), parse: parse_junk }, | |
231 | ]; | |
232 | ||
233 | fn is_list_tag(tag: u32) -> bool { | |
234 | for chunk in CHUNKS.iter() { | |
235 | if let RIFFTag::List(ltag, _) = chunk.tag { | |
236 | if tag == ltag { | |
237 | return true; | |
238 | } | |
239 | } | |
240 | } | |
241 | false | |
242 | } | |
243 | ||
244 | #[allow(unused_variables)] | |
245 | fn parse_hdrl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
246 | Ok(0) | |
247 | } | |
248 | ||
249 | #[allow(unused_variables)] | |
250 | fn parse_strl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
251 | Ok(0) | |
252 | } | |
253 | ||
254 | #[allow(unused_variables)] | |
255 | fn parse_strh(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
256 | if size < 0x38 { return Err(InvalidData); } | |
257 | let tag = dmx.src.read_u32be()?; //stream type | |
258 | let fcc = dmx.src.read_u32be()?; //handler(fourcc) | |
259 | dmx.src.read_u32le()?; //flags | |
260 | dmx.src.read_skip(2)?; //priority | |
261 | dmx.src.read_skip(2)?; //language | |
262 | dmx.src.read_skip(4)?; //initial frames | |
263 | dmx.tb_num = dmx.src.read_u32le()?; //scale | |
264 | dmx.tb_den = dmx.src.read_u32le()?; //rate | |
265 | dmx.src.read_skip(4)?; //start | |
266 | dmx.src.read_skip(4)?; //length | |
267 | dmx.src.read_skip(4)?; //buf size | |
268 | dmx.src.read_skip(4)?; //quality | |
269 | dmx.src.read_skip(4)?; //sample size | |
270 | let a = dmx.src.read_u16le()?; | |
271 | let b = dmx.src.read_u16le()?; | |
272 | let c = dmx.src.read_u16le()?; | |
273 | let d = dmx.src.read_u16le()?; | |
274 | ||
275 | dmx.src.read_skip(size - 0x38)?; | |
276 | ||
277 | if !dmx.sstate.valid_state() || dmx.sstate.strm_no >= dmx.num_streams { | |
278 | return Err(InvalidData); | |
279 | } | |
280 | if tag == mktag!(b"vids") { | |
281 | dmx.sstate.strm_type = Some(StreamType::Video); | |
282 | } else if tag == mktag!(b"auds") { | |
283 | dmx.sstate.strm_type = Some(StreamType::Audio); | |
284 | } else { | |
285 | dmx.sstate.strm_type = Some(StreamType::Data); | |
286 | } | |
287 | dmx.sstate.got_strf = false; | |
288 | ||
289 | Ok(size) | |
290 | } | |
291 | ||
292 | fn parse_strf(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
293 | if dmx.sstate.strm_type.is_none() { return Err(InvalidData); } | |
294 | match dmx.sstate.strm_type.unwrap() { | |
295 | StreamType::Video => parse_strf_vids(dmx, strmgr, size), | |
296 | StreamType::Audio => parse_strf_auds(dmx, strmgr, size), | |
297 | _ => parse_strf_xxxx(dmx, strmgr, size), | |
298 | } | |
299 | } | |
300 | ||
301 | #[allow(unused_variables)] | |
302 | fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
303 | if size < 40 { return Err(InvalidData); } | |
304 | let bi_size = dmx.src.read_u32le()?; | |
305 | if (bi_size as usize) > size { return Err(InvalidData); } | |
306 | let width = dmx.src.read_u32le()?; | |
307 | let height = dmx.src.read_u32le()? as i32; | |
308 | let planes = dmx.src.read_u16le()?; | |
309 | let bitcount = dmx.src.read_u16le()?; | |
310 | let mut compression: [u8; 4] = [0; 4]; | |
311 | dmx.src.read_buf(&mut compression)?; | |
312 | let img_size = dmx.src.read_u32le()?; | |
313 | let xdpi = dmx.src.read_u32le()?; | |
314 | let ydpi = dmx.src.read_u32le()?; | |
315 | let colors = dmx.src.read_u32le()?; | |
316 | let imp_colors = dmx.src.read_u32le()?; | |
317 | ||
318 | let flip = height < 0; | |
319 | let format = if bitcount > 8 { RGB24_FORMAT } else { PAL8_FORMAT }; | |
320 | let vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, PAL8_FORMAT); | |
321 | let vci = NACodecTypeInfo::Video(vhdr); | |
322 | let edata = dmx.read_extradata(size - 40)?; | |
323 | let cname = match register::find_codec_from_avi_fourcc(&compression) { | |
324 | None => "unknown", | |
325 | Some(name) => name, | |
326 | }; | |
327 | let vinfo = NACodecInfo::new(cname, vci, edata); | |
328 | let res = strmgr.add_stream(NAStream::new(StreamType::Video, u32::from(dmx.sstate.strm_no), vinfo, dmx.tb_num, dmx.tb_den)); | |
329 | if res.is_none() { return Err(MemoryError); } | |
330 | dmx.sstate.reset(); | |
331 | Ok(size) | |
332 | } | |
333 | ||
334 | #[allow(unused_variables)] | |
335 | fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
336 | if size < 16 { return Err(InvalidData); } | |
337 | let w_format_tag = dmx.src.read_u16le()?; | |
338 | let channels = dmx.src.read_u16le()?; | |
339 | let samplespersec = dmx.src.read_u32le()?; | |
340 | let avgbytespersec = dmx.src.read_u32le()?; | |
341 | let block_align = dmx.src.read_u16le()?; | |
342 | let bits_per_sample = dmx.src.read_u16le()? * 8; | |
343 | ||
344 | let soniton = NASoniton::new(bits_per_sample as u8, SONITON_FLAG_SIGNED); | |
345 | let ahdr = NAAudioInfo::new(samplespersec, channels as u8, soniton, block_align as usize); | |
346 | let edata = dmx.read_extradata(size - 16)?; | |
347 | let cname = match register::find_codec_from_wav_twocc(w_format_tag) { | |
348 | None => "unknown", | |
349 | Some(name) => name, | |
350 | }; | |
351 | let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata); | |
352 | let res = strmgr.add_stream(NAStream::new(StreamType::Audio, u32::from(dmx.sstate.strm_no), ainfo, dmx.tb_num, dmx.tb_den)); | |
353 | if res.is_none() { return Err(MemoryError); } | |
354 | dmx.sstate.reset(); | |
355 | Ok(size) | |
356 | } | |
357 | ||
358 | fn parse_strf_xxxx(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
359 | let edata = dmx.read_extradata(size)?; | |
360 | let info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata); | |
361 | let res = strmgr.add_stream(NAStream::new(StreamType::Data, u32::from(dmx.sstate.strm_no), info, dmx.tb_num, dmx.tb_den)); | |
362 | if res.is_none() { return Err(MemoryError); } | |
363 | dmx.sstate.reset(); | |
364 | Ok(size) | |
365 | } | |
366 | ||
367 | #[allow(unused_variables)] | |
368 | fn parse_avih(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
369 | if size < 0x38 { return Err(InvalidData); } | |
370 | let timebase = dmx.src.read_u32le()?; //microsec per frame | |
371 | dmx.src.read_skip(4)?; //max frame size | |
372 | dmx.src.read_skip(4)?; //padding | |
373 | dmx.src.read_u32le()?; //flags | |
374 | let frames = dmx.src.read_u32le()?; //frames | |
375 | dmx.src.read_skip(4)?; //initial frames | |
376 | let streams = dmx.src.read_u32le()?; //streams | |
377 | if streams > 100 { return Err(InvalidData); } | |
378 | dmx.num_streams = streams as u8; | |
379 | ||
380 | dmx.src.read_skip(4)?; //buf size | |
381 | let width = dmx.src.read_u32le()?; //width | |
382 | let height = dmx.src.read_u32le()? as i32; //height | |
383 | dmx.src.read_skip(16)?; //reserved | |
384 | ||
385 | dmx.cur_frame.resize(streams as usize, 0); | |
386 | dmx.src.read_skip(size - 0x38)?; | |
387 | Ok(size) | |
388 | } | |
389 | ||
390 | #[allow(unused_variables)] | |
391 | fn parse_junk(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
392 | dmx.src.read_skip(size)?; | |
393 | Ok(size) | |
394 | } | |
395 | ||
396 | pub struct AVIDemuxerCreator { } | |
397 | ||
398 | impl DemuxerCreator for AVIDemuxerCreator { | |
399 | fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> { | |
400 | Box::new(AVIDemuxer::new(br)) | |
401 | } | |
402 | fn get_name(&self) -> &'static str { "avi" } | |
403 | } | |
404 | ||
405 | #[cfg(test)] | |
406 | mod test { | |
407 | use super::*; | |
408 | use std::fs::File; | |
409 | ||
410 | #[test] | |
411 | fn test_avi_demux() { | |
412 | let mut file = File::open("assets/Indeo/laser05.avi").unwrap(); | |
413 | let mut fr = FileReader::new_read(&mut file); | |
414 | let mut br = ByteReader::new(&mut fr); | |
415 | let mut dmx = AVIDemuxer::new(&mut br); | |
416 | let mut sm = StreamManager::new(); | |
417 | dmx.open(&mut sm).unwrap(); | |
418 | ||
419 | loop { | |
420 | let pktres = dmx.get_frame(&mut sm); | |
421 | if let Err(e) = pktres { | |
422 | if e == DemuxerError::EOF { break; } | |
423 | panic!("error"); | |
424 | } | |
425 | let pkt = pktres.unwrap(); | |
426 | println!("Got {}", pkt); | |
427 | } | |
428 | } | |
429 | } |