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Commit | Line | Data |
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1 | use nihav_core::demuxers::*; | |
2 | use nihav_registry::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 | struct PalInfo { | |
38 | pal: Arc<[u8; 1024]>, | |
39 | changed: bool, | |
40 | stream_no: usize, | |
41 | } | |
42 | ||
43 | #[allow(dead_code)] | |
44 | struct AVIDemuxer<'a> { | |
45 | src: &'a mut ByteReader<'a>, | |
46 | cur_frame: Vec<u64>, | |
47 | num_streams: u8, | |
48 | size: usize, | |
49 | movi_size: usize, | |
50 | movi_pos: u64, | |
51 | movi_orig: usize, | |
52 | sstate: StreamState, | |
53 | tb_num: u32, | |
54 | tb_den: u32, | |
55 | key_offs: Vec<u64>, | |
56 | pal: Vec<PalInfo>, | |
57 | } | |
58 | ||
59 | #[derive(Debug,Clone,Copy,PartialEq)] | |
60 | enum RIFFTag { | |
61 | Chunk(u32), | |
62 | List(u32,u32), | |
63 | } | |
64 | ||
65 | struct RIFFParser { | |
66 | tag: RIFFTag, | |
67 | parse: fn(&mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize>, | |
68 | } | |
69 | ||
70 | impl<'a> DemuxCore<'a> for AVIDemuxer<'a> { | |
71 | fn open(&mut self, strmgr: &mut StreamManager, seek_index: &mut SeekIndex) -> DemuxerResult<()> { | |
72 | self.read_header(strmgr, seek_index)?; | |
73 | Ok(()) | |
74 | } | |
75 | ||
76 | fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> { | |
77 | if self.movi_size == 0 { return Err(EOF); } | |
78 | let mut tag: [u8; 4] = [0; 4]; | |
79 | loop { | |
80 | if (self.src.tell() & 1) == 1 { | |
81 | self.src.read_skip(1)?; | |
82 | self.movi_size -= 1; | |
83 | if self.movi_size == 0 { return Err(EOF); } | |
84 | } | |
85 | let is_keyframe = self.key_offs.binary_search(&self.src.tell()).is_ok(); | |
86 | self.src.read_buf(&mut tag)?; | |
87 | let size = self.src.read_u32le()? as usize; | |
88 | if mktag!(tag) == mktag!(b"JUNK") { | |
89 | self.movi_size -= size + 8; | |
90 | self.src.read_skip(size)?; | |
91 | if self.movi_size == 0 { return Err(EOF); } | |
92 | continue; | |
93 | } | |
94 | if mktag!(tag) == mktag!(b"LIST") { | |
95 | self.movi_size -= 12; | |
96 | self.src.read_skip(4)?; | |
97 | if self.movi_size == 0 { return Err(EOF); } | |
98 | continue; | |
99 | } | |
100 | if (tag[0] == b'i' && tag[1] == b'x') || (&tag == b"idx1") { | |
101 | return Err(EOF); | |
102 | } | |
103 | if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' { | |
104 | return Err(InvalidData); | |
105 | } | |
106 | let stream_no = (tag[0] - b'0') * 10 + (tag[1] - b'0'); | |
107 | if tag[2] == b'p' && tag[3] == b'c' { | |
108 | self.parse_palette_change(stream_no as usize, size)?; | |
109 | self.movi_size -= size; | |
110 | if self.movi_size == 0 { return Err(EOF); } | |
111 | continue; | |
112 | } | |
113 | let str = strmgr.get_stream(stream_no as usize); | |
114 | if str.is_none() { return Err(InvalidData); } | |
115 | let stream = str.unwrap(); | |
116 | if size == 0 { | |
117 | self.movi_size -= 8; | |
118 | if self.movi_size == 0 { return Err(EOF); } | |
119 | continue; | |
120 | } | |
121 | let (tb_num, tb_den) = stream.get_timebase(); | |
122 | let ts = NATimeInfo::new(Some(self.cur_frame[stream_no as usize]), None, None, tb_num, tb_den); | |
123 | let mut pkt = self.src.read_packet(stream, ts, is_keyframe, size)?; | |
124 | for pe in self.pal.iter_mut() { | |
125 | if pe.stream_no == (stream_no as usize) { | |
126 | pkt.add_side_data(NASideData::Palette(pe.changed, pe.pal.clone())); | |
127 | pe.changed = false; | |
128 | break; | |
129 | } | |
130 | } | |
131 | self.cur_frame[stream_no as usize] += 1; | |
132 | self.movi_size -= size + 8; | |
133 | ||
134 | return Ok(pkt); | |
135 | } | |
136 | } | |
137 | ||
138 | fn seek(&mut self, time: u64, seek_index: &SeekIndex) -> DemuxerResult<()> { | |
139 | let ret = seek_index.find_pos(time); | |
140 | if ret.is_none() { | |
141 | return Err(DemuxerError::SeekError); | |
142 | } | |
143 | let seek_info = ret.unwrap(); | |
144 | ||
145 | if seek_info.pos < self.movi_pos { return Err(DemuxerError::SeekError); } | |
146 | let skip_size = (seek_info.pos - self.movi_pos) as usize; | |
147 | if skip_size > self.movi_size { return Err(DemuxerError::SeekError); } | |
148 | self.movi_size = self.movi_orig - skip_size; | |
149 | ||
150 | self.cur_frame[seek_info.str_id as usize] = seek_info.pts; | |
151 | self.src.seek(SeekFrom::Start(seek_info.pos))?; | |
152 | ||
153 | Ok(()) | |
154 | } | |
155 | } | |
156 | ||
157 | impl<'a> AVIDemuxer<'a> { | |
158 | fn new(io: &'a mut ByteReader<'a>) -> Self { | |
159 | AVIDemuxer { | |
160 | cur_frame: Vec::new(), | |
161 | num_streams: 0, | |
162 | src: io, | |
163 | size: 0, | |
164 | movi_size: 0, | |
165 | movi_pos: 0, | |
166 | movi_orig: 0, | |
167 | sstate: StreamState::new(), | |
168 | tb_num: 0, | |
169 | tb_den: 0, | |
170 | key_offs: Vec::new(), | |
171 | pal: Vec::new(), | |
172 | } | |
173 | } | |
174 | ||
175 | fn parse_chunk(&mut self, strmgr: &mut StreamManager, end_tag: RIFFTag, csize: usize, depth: u16) -> DemuxerResult<(usize, bool)> { | |
176 | if csize < 8 { return Err(InvalidData); } | |
177 | if depth > 42 { return Err(InvalidData); } | |
178 | ||
179 | let tag = self.src.read_u32be()?; | |
180 | let size = self.src.read_u32le()? as usize; | |
181 | if size > csize { return Err(InvalidData); } | |
182 | if RIFFTag::Chunk(tag) == end_tag { | |
183 | return Ok((size, true)); | |
184 | } | |
185 | let is_list = is_list_tag(tag); | |
186 | let ltag = if is_list { self.src.read_u32be()? } else { 0 }; | |
187 | if RIFFTag::List(tag, ltag) == end_tag { | |
188 | return Ok((size, true)); | |
189 | } | |
190 | ||
191 | for chunk in CHUNKS.iter() { | |
192 | if RIFFTag::Chunk(tag) == chunk.tag { | |
193 | let psize = (chunk.parse)(self, strmgr, size)?; | |
194 | if psize != size { return Err(InvalidData); } | |
195 | if (psize & 1) == 1 { self.src.read_skip(1)?; } | |
196 | return Ok((size + 8, false)); | |
197 | } | |
198 | if RIFFTag::List(tag, ltag) == chunk.tag { | |
199 | let mut rest_size = size - 4; | |
200 | let psize = (chunk.parse)(self, strmgr, rest_size)?; | |
201 | if psize > rest_size { return Err(InvalidData); } | |
202 | rest_size -= psize; | |
203 | while rest_size > 0 { | |
204 | let (psize, _) = self.parse_chunk(strmgr, end_tag, rest_size, depth+1)?; | |
205 | if psize > rest_size { return Err(InvalidData); } | |
206 | rest_size -= psize; | |
207 | if ((psize & 1) == 1) && (rest_size > 0) { | |
208 | rest_size -= 1; | |
209 | } | |
210 | } | |
211 | ||
212 | return Ok((size + 8, false)); | |
213 | } | |
214 | } | |
215 | if !is_list { | |
216 | self.src.read_skip(size)?; | |
217 | } else { | |
218 | if size < 4 { return Err(InvalidData); } | |
219 | self.src.read_skip(size - 4)?; | |
220 | } | |
221 | if (size & 1) == 1 { self.src.read_skip(1)?; } | |
222 | Ok((size + 8, false)) | |
223 | } | |
224 | ||
225 | fn read_header(&mut self, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex) -> DemuxerResult<()> { | |
226 | let riff_tag = self.src.read_u32be()?; | |
227 | let size = self.src.read_u32le()? as usize; | |
228 | let avi_tag = self.src.read_u32be()?; | |
229 | let mut matches = false; | |
230 | for rt in RIFF_TAGS.iter() { | |
231 | if rt[0] == riff_tag && rt[1] == avi_tag { | |
232 | matches = true; | |
233 | break; | |
234 | } | |
235 | } | |
236 | if !matches { | |
237 | return Err(InvalidData); | |
238 | } | |
239 | self.size = size; | |
240 | let mut rest_size = size; | |
241 | loop { | |
242 | let (csz, end) = self.parse_chunk(strmgr, RIFFTag::List(mktag!(b"LIST"), mktag!(b"movi")), rest_size,0)?; | |
243 | if end { | |
244 | self.movi_size = csz - 4; | |
245 | self.movi_orig = self.movi_size; | |
246 | self.movi_pos = self.src.tell(); | |
247 | break; | |
248 | } | |
249 | rest_size -= csz; | |
250 | } | |
251 | if !seek_idx.skip_index { | |
252 | self.src.read_skip(self.movi_size)?; | |
253 | while rest_size > 0 { | |
254 | let ret = self.parse_chunk(strmgr, RIFFTag::Chunk(mktag!(b"idx1")), rest_size,0); | |
255 | if ret.is_err() { break; } | |
256 | let (csz, end) = ret.unwrap(); | |
257 | if end { | |
258 | let _res = parse_idx1(&mut self.src, strmgr, seek_idx, csz, self.movi_pos, &mut self.key_offs); | |
259 | break; | |
260 | } | |
261 | rest_size -= csz; | |
262 | } | |
263 | } | |
264 | if self.movi_pos != 0 { | |
265 | self.src.seek(SeekFrom::Start(self.movi_pos))?; | |
266 | } else { | |
267 | return Err(InvalidData); | |
268 | } | |
269 | if !self.sstate.valid_state() || self.sstate.strm_no != self.num_streams { | |
270 | return Err(InvalidData); | |
271 | } | |
272 | Ok(()) | |
273 | } | |
274 | ||
275 | fn read_extradata(&mut self, size: usize) -> DemuxerResult<Option<Vec<u8>>> { | |
276 | if size == 0 { return Ok(None); } | |
277 | let mut edvec: Vec<u8> = vec![0; size]; | |
278 | self.src.read_buf(&mut edvec)?; | |
279 | Ok(Some(edvec)) | |
280 | } | |
281 | ||
282 | fn parse_palette_change(&mut self, stream_no: usize, size: usize) -> DemuxerResult<()> { | |
283 | for pe in self.pal.iter_mut() { | |
284 | if pe.stream_no == stream_no { | |
285 | let start_clr = self.src.read_byte()? as usize; | |
286 | let len = self.src.read_byte()? as usize; | |
287 | let _flags = self.src.read_u16le()?; | |
288 | validate!(start_clr + len <= 256); | |
289 | validate!(len * 4 + 4 == size); | |
290 | let mut newpal = *pe.pal; | |
291 | for i in start_clr..(start_clr + len) { | |
292 | newpal[i * 4] = self.src.read_byte()?; | |
293 | newpal[i * 4 + 1] = self.src.read_byte()?; | |
294 | newpal[i * 4 + 2] = self.src.read_byte()?; | |
295 | newpal[i * 4 + 3] = 0; | |
296 | self.src.read_byte()?; // flags | |
297 | } | |
298 | pe.pal = Arc::new(newpal); | |
299 | pe.changed = true; | |
300 | return Ok(()); | |
301 | } | |
302 | } | |
303 | self.src.read_skip(size)?; | |
304 | Ok(()) | |
305 | } | |
306 | } | |
307 | ||
308 | const RIFF_TAGS: &[[u32; 2]] = &[ | |
309 | [ mktag!(b"RIFF"), mktag!(b"AVI ") ], | |
310 | [ mktag!(b"RIFF"), mktag!(b"AVIX") ], | |
311 | [ mktag!(b"ON2 "), mktag!(b"ON2f") ], | |
312 | ]; | |
313 | ||
314 | const CHUNKS: [RIFFParser; 7] = [ | |
315 | RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"hdrl")), parse: parse_hdrl }, | |
316 | RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"strl")), parse: parse_strl }, | |
317 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"avih")), parse: parse_avih }, | |
318 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"ON2h")), parse: parse_avih }, | |
319 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strf")), parse: parse_strf }, | |
320 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strh")), parse: parse_strh }, | |
321 | RIFFParser { tag: RIFFTag::Chunk(mktag!(b"JUNK")), parse: parse_junk }, | |
322 | ]; | |
323 | ||
324 | fn is_list_tag(tag: u32) -> bool { | |
325 | for chunk in CHUNKS.iter() { | |
326 | if let RIFFTag::List(ltag, _) = chunk.tag { | |
327 | if tag == ltag { | |
328 | return true; | |
329 | } | |
330 | } | |
331 | } | |
332 | false | |
333 | } | |
334 | ||
335 | #[allow(unused_variables)] | |
336 | fn parse_hdrl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
337 | Ok(0) | |
338 | } | |
339 | ||
340 | #[allow(unused_variables)] | |
341 | fn parse_strl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
342 | Ok(0) | |
343 | } | |
344 | ||
345 | #[allow(unused_variables)] | |
346 | fn parse_strh(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
347 | if size < 0x38 { return Err(InvalidData); } | |
348 | let tag = dmx.src.read_u32be()?; //stream type | |
349 | let fcc = dmx.src.read_u32be()?; //handler(fourcc) | |
350 | dmx.src.read_u32le()?; //flags | |
351 | dmx.src.read_skip(2)?; //priority | |
352 | dmx.src.read_skip(2)?; //language | |
353 | dmx.src.read_skip(4)?; //initial frames | |
354 | dmx.tb_num = dmx.src.read_u32le()?; //scale | |
355 | dmx.tb_den = dmx.src.read_u32le()?; //rate | |
356 | dmx.src.read_skip(4)?; //start | |
357 | dmx.src.read_skip(4)?; //length | |
358 | dmx.src.read_skip(4)?; //buf size | |
359 | dmx.src.read_skip(4)?; //quality | |
360 | dmx.src.read_skip(4)?; //sample size | |
361 | let a = dmx.src.read_u16le()?; | |
362 | let b = dmx.src.read_u16le()?; | |
363 | let c = dmx.src.read_u16le()?; | |
364 | let d = dmx.src.read_u16le()?; | |
365 | ||
366 | dmx.src.read_skip(size - 0x38)?; | |
367 | ||
368 | if !dmx.sstate.valid_state() || dmx.sstate.strm_no >= dmx.num_streams { | |
369 | return Err(InvalidData); | |
370 | } | |
371 | if tag == mktag!(b"vids") { | |
372 | dmx.sstate.strm_type = Some(StreamType::Video); | |
373 | } else if tag == mktag!(b"auds") { | |
374 | dmx.sstate.strm_type = Some(StreamType::Audio); | |
375 | } else { | |
376 | dmx.sstate.strm_type = Some(StreamType::Data); | |
377 | } | |
378 | dmx.sstate.got_strf = false; | |
379 | ||
380 | Ok(size) | |
381 | } | |
382 | ||
383 | fn parse_strf(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
384 | if dmx.sstate.strm_type.is_none() { return Err(InvalidData); } | |
385 | match dmx.sstate.strm_type.unwrap() { | |
386 | StreamType::Video => parse_strf_vids(dmx, strmgr, size), | |
387 | StreamType::Audio => parse_strf_auds(dmx, strmgr, size), | |
388 | _ => parse_strf_xxxx(dmx, strmgr, size), | |
389 | } | |
390 | } | |
391 | ||
392 | #[allow(unused_variables)] | |
393 | fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
394 | if size < 40 { return Err(InvalidData); } | |
395 | let bi_size = dmx.src.read_u32le()?; | |
396 | if (bi_size as usize) < 40 { return Err(InvalidData); } | |
397 | let width = dmx.src.read_u32le()?; | |
398 | let height = dmx.src.read_u32le()? as i32; | |
399 | let planes = dmx.src.read_u16le()?; | |
400 | let bitcount = dmx.src.read_u16le()?; | |
401 | let mut compression: [u8; 4] = [0; 4]; | |
402 | dmx.src.read_buf(&mut compression)?; | |
403 | let img_size = dmx.src.read_u32le()?; | |
404 | let xdpi = dmx.src.read_u32le()?; | |
405 | let ydpi = dmx.src.read_u32le()?; | |
406 | let colors = dmx.src.read_u32le()?; | |
407 | validate!(colors <= 256); | |
408 | let imp_colors = dmx.src.read_u32le()?; | |
409 | ||
410 | let flip = height < 0; | |
411 | let format = if bitcount > 8 { RGB24_FORMAT } else { PAL8_FORMAT }; | |
412 | let vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, format); | |
413 | let vci = NACodecTypeInfo::Video(vhdr); | |
414 | let edata = dmx.read_extradata(size - 40)?; | |
415 | if colors > 0 { | |
416 | if let Some(ref buf) = edata { | |
417 | let mut pal = [0u8; 1024]; | |
418 | for (dpal, spal) in pal.chunks_mut(4).take(colors as usize).zip(buf.chunks(4)) { | |
419 | dpal[0] = spal[2]; | |
420 | dpal[1] = spal[1]; | |
421 | dpal[2] = spal[0]; | |
422 | dpal[3] = 0; | |
423 | } | |
424 | let pal = PalInfo { pal: Arc::new(pal), changed: true, stream_no: strmgr.get_num_streams() }; | |
425 | dmx.pal.push(pal); | |
426 | } | |
427 | } | |
428 | let cname = match register::find_codec_from_avi_fourcc(&compression) { | |
429 | None => "unknown", | |
430 | Some(name) => name, | |
431 | }; | |
432 | let vinfo = NACodecInfo::new(cname, vci, edata); | |
433 | let res = strmgr.add_stream(NAStream::new(StreamType::Video, u32::from(dmx.sstate.strm_no), vinfo, dmx.tb_num, dmx.tb_den)); | |
434 | if res.is_none() { return Err(MemoryError); } | |
435 | dmx.sstate.reset(); | |
436 | Ok(size) | |
437 | } | |
438 | ||
439 | #[allow(unused_variables)] | |
440 | fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
441 | if size < 16 { return Err(InvalidData); } | |
442 | let w_format_tag = dmx.src.read_u16le()?; | |
443 | let channels = dmx.src.read_u16le()?; | |
444 | let samplespersec = dmx.src.read_u32le()?; | |
445 | let avgbytespersec = dmx.src.read_u32le()?; | |
446 | let block_align = dmx.src.read_u16le()?; | |
447 | let bits_per_sample = dmx.src.read_u16le()?; | |
448 | ||
449 | let soniton = NASoniton::new(bits_per_sample as u8, SONITON_FLAG_SIGNED); | |
450 | let ahdr = NAAudioInfo::new(samplespersec, channels as u8, soniton, block_align as usize); | |
451 | let edata; | |
452 | if size > 16 { | |
453 | let edata_size = dmx.src.read_u16le()? as usize; | |
454 | validate!(edata_size + 18 == size); | |
455 | edata = dmx.read_extradata(size - 18)?; | |
456 | } else { | |
457 | edata = None; | |
458 | } | |
459 | let cname = match register::find_codec_from_wav_twocc(w_format_tag) { | |
460 | None => "unknown", | |
461 | Some(name) => name, | |
462 | }; | |
463 | let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata); | |
464 | let res = strmgr.add_stream(NAStream::new(StreamType::Audio, u32::from(dmx.sstate.strm_no), ainfo, dmx.tb_num, dmx.tb_den)); | |
465 | if res.is_none() { return Err(MemoryError); } | |
466 | dmx.sstate.reset(); | |
467 | Ok(size) | |
468 | } | |
469 | ||
470 | fn parse_strf_xxxx(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
471 | let edata = dmx.read_extradata(size)?; | |
472 | let info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata); | |
473 | let res = strmgr.add_stream(NAStream::new(StreamType::Data, u32::from(dmx.sstate.strm_no), info, dmx.tb_num, dmx.tb_den)); | |
474 | if res.is_none() { return Err(MemoryError); } | |
475 | dmx.sstate.reset(); | |
476 | Ok(size) | |
477 | } | |
478 | ||
479 | #[allow(unused_variables)] | |
480 | fn parse_avih(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
481 | if size < 0x38 { return Err(InvalidData); } | |
482 | let timebase = dmx.src.read_u32le()?; //microsec per frame | |
483 | dmx.src.read_skip(4)?; //max frame size | |
484 | dmx.src.read_skip(4)?; //padding | |
485 | dmx.src.read_u32le()?; //flags | |
486 | let frames = dmx.src.read_u32le()?; //frames | |
487 | dmx.src.read_skip(4)?; //initial frames | |
488 | let streams = dmx.src.read_u32le()?; //streams | |
489 | if streams > 100 { return Err(InvalidData); } | |
490 | dmx.num_streams = streams as u8; | |
491 | ||
492 | dmx.src.read_skip(4)?; //buf size | |
493 | let width = dmx.src.read_u32le()?; //width | |
494 | let height = dmx.src.read_u32le()? as i32; //height | |
495 | dmx.src.read_skip(16)?; //reserved | |
496 | ||
497 | dmx.cur_frame.resize(streams as usize, 0); | |
498 | dmx.src.read_skip(size - 0x38)?; | |
499 | Ok(size) | |
500 | } | |
501 | ||
502 | #[allow(unused_variables)] | |
503 | fn parse_junk(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> { | |
504 | dmx.src.read_skip(size)?; | |
505 | Ok(size) | |
506 | } | |
507 | ||
508 | fn parse_idx1(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex, size: usize, movi_pos: u64, key_offs: &mut Vec<u64>) -> DemuxerResult<usize> { | |
509 | validate!((size & 15) == 0); | |
510 | let mut tag = [0u8; 4]; | |
511 | let num_entries = size >> 4; | |
512 | let mut counter = [0u64; 100]; | |
513 | for _ in 0..num_entries { | |
514 | src.read_buf(&mut tag)?; | |
515 | let flags = src.read_u32le()?; | |
516 | let offset = src.read_u32le()? as u64; | |
517 | let _length = src.read_u32le()?; | |
518 | ||
519 | if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' { | |
520 | return Err(InvalidData); | |
521 | } | |
522 | let stream_no = ((tag[0] - b'0') * 10 + (tag[1] - b'0')) as usize; | |
523 | ||
524 | if (flags & 0x10) != 0 { | |
525 | if let Some(str) = strmgr.get_stream(stream_no) { | |
526 | if str.get_media_type() == StreamType::Video { | |
527 | let (tb_num, tb_den) = str.get_timebase(); | |
528 | let pts = counter[stream_no]; | |
529 | let time = NATimeInfo::ts_to_time(pts, 1000, tb_num, tb_den); | |
530 | seek_idx.add_entry(stream_no as u32, SeekEntry { time, pts, pos: offset + movi_pos - 4 }); | |
531 | } | |
532 | key_offs.push(offset); | |
533 | } | |
534 | } | |
535 | counter[stream_no] += 1; | |
536 | } | |
537 | key_offs.sort_unstable(); | |
538 | Ok(size) | |
539 | } | |
540 | ||
541 | pub struct AVIDemuxerCreator { } | |
542 | ||
543 | impl DemuxerCreator for AVIDemuxerCreator { | |
544 | fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> { | |
545 | Box::new(AVIDemuxer::new(br)) | |
546 | } | |
547 | fn get_name(&self) -> &'static str { "avi" } | |
548 | } | |
549 | ||
550 | #[cfg(test)] | |
551 | mod test { | |
552 | use super::*; | |
553 | use std::fs::File; | |
554 | ||
555 | #[test] | |
556 | fn test_avi_demux() { | |
557 | let mut file = File::open("assets/Indeo/laser05.avi").unwrap(); | |
558 | let mut fr = FileReader::new_read(&mut file); | |
559 | let mut br = ByteReader::new(&mut fr); | |
560 | let mut dmx = AVIDemuxer::new(&mut br); | |
561 | let mut sm = StreamManager::new(); | |
562 | let mut si = SeekIndex::new(); | |
563 | dmx.open(&mut sm, &mut si).unwrap(); | |
564 | ||
565 | loop { | |
566 | let pktres = dmx.get_frame(&mut sm); | |
567 | if let Err(e) = pktres { | |
568 | if e == DemuxerError::EOF { break; } | |
569 | panic!("error"); | |
570 | } | |
571 | let pkt = pktres.unwrap(); | |
572 | println!("Got {}", pkt); | |
573 | } | |
574 | } | |
575 | } |