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