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