3 use super::DemuxerError::*;
9 ($a:expr, $b:expr, $c:expr, $d:expr) => ({
10 (($a as u32) << 24) | (($b as u32) << 16) | (($c as u32) << 8) | ($d as u32)
13 (($arr[0] as u32) << 24) | (($arr[1] as u32) << 16) | (($arr[2] as u32) << 8) | ($arr[3] as u32)
20 strm_type: Option<StreamType>,
25 StreamState { strm_no: 0, got_strf: true, strm_type: None }
28 self.strm_type = None;
32 fn valid_state(&self) -> bool {
33 match self.strm_type {
34 None => self.got_strf,
41 struct AVIDemuxer<'a> {
42 src: &'a mut ByteReader<'a>,
52 #[derive(Debug,Clone,Copy,PartialEq)]
60 parse: fn(&mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize>,
63 impl<'a> DemuxCore<'a> for AVIDemuxer<'a> {
64 #[allow(unused_variables)]
65 fn open(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
66 self.read_header(strmgr)?;
70 fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
71 if self.movi_size == 0 { return Err(EOF); }
72 let mut tag: [u8; 4] = [0; 4];
74 if (self.src.tell() & 1) == 1 {
75 self.src.read_skip(1)?;
77 if self.movi_size == 0 { return Err(EOF); }
79 self.src.read_buf(&mut tag)?;
80 let size = self.src.read_u32le()? as usize;
81 if mktag!(tag) == mktag!(b"JUNK") {
82 self.movi_size -= size + 8;
83 self.src.read_skip(size)?;
84 if self.movi_size == 0 { return Err(EOF); }
87 if mktag!(tag) == mktag!(b"LIST") {
89 self.src.read_skip(4)?;
90 if self.movi_size == 0 { return Err(EOF); }
93 if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' {
94 return Err(InvalidData);
96 let stream_no = (tag[0] - b'0') * 10 + (tag[1] - b'0');
97 let str = strmgr.get_stream(stream_no as usize);
98 if let None = str { return Err(InvalidData); }
99 let stream = str.unwrap();
102 if self.movi_size == 0 { return Err(EOF); }
105 let (tb_num, tb_den) = stream.get_timebase();
106 let ts = NATimeInfo::new(Some(self.cur_frame[stream_no as usize]), None, None, tb_num, tb_den);
107 let pkt = self.src.read_packet(stream, ts, false, size)?;
108 self.cur_frame[stream_no as usize] += 1;
109 self.movi_size -= size + 8;
115 #[allow(unused_variables)]
116 fn seek(&mut self, time: u64) -> DemuxerResult<()> {
121 impl<'a> AVIDemuxer<'a> {
122 fn new(io: &'a mut ByteReader<'a>) -> Self {
124 cur_frame: Vec::new(),
129 sstate: StreamState::new(),
135 fn parse_chunk(&mut self, strmgr: &mut StreamManager, end_tag: RIFFTag, csize: usize, depth: u16) -> DemuxerResult<(usize, bool)> {
136 if csize < 8 { return Err(InvalidData); }
137 if depth > 42 { return Err(InvalidData); }
139 let tag = self.src.read_u32be()?;
140 let size = self.src.read_u32le()? as usize;
141 if size > csize { return Err(InvalidData); }
142 if RIFFTag::Chunk(tag) == end_tag {
143 return Ok((size, true));
145 let is_list = is_list_tag(tag);
146 let ltag = if is_list { self.src.read_u32be()? } else { 0 };
147 if RIFFTag::List(tag, ltag) == end_tag {
148 return Ok((size, true));
151 for i in 0..CHUNKS.len() {
152 if RIFFTag::Chunk(tag) == CHUNKS[i].tag {
153 let psize = (CHUNKS[i].parse)(self, strmgr, size)?;
154 if psize != size { return Err(InvalidData); }
155 if (psize & 1) == 1 { self.src.read_skip(1)?; }
156 return Ok((size + 8, false));
158 if RIFFTag::List(tag, ltag) == CHUNKS[i].tag {
159 let mut rest_size = size - 4;
160 let psize = (CHUNKS[i].parse)(self, strmgr, rest_size)?;
161 if psize > rest_size { return Err(InvalidData); }
163 while rest_size > 0 {
164 let (psize, _) = self.parse_chunk(strmgr, end_tag, rest_size, depth+1)?;
165 if psize > rest_size { return Err(InvalidData); }
167 if (psize & 1) == 1 {
174 return Ok((size + 8, false));
178 self.src.read_skip(size)?;
180 if size < 4 { return Err(InvalidData); }
181 self.src.read_skip(size - 4)?;
183 if (size & 1) == 1 { self.src.read_skip(1)?; }
184 return Ok((size + 8, false));
187 fn read_header(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
188 let riff_tag = self.src.read_u32be()?;
189 let size = self.src.read_u32le()? as usize;
190 let avi_tag = self.src.read_u32be()?;
191 if riff_tag != mktag!(b"RIFF") || avi_tag != mktag!(b"AVI ") {
192 return Err(InvalidData);
195 let mut rest_size = size;
197 let (csz, end) = self.parse_chunk(strmgr, RIFFTag::List(mktag!(b"LIST"), mktag!(b"movi")), rest_size,0)?;
198 if end { self.movi_size = csz - 4; break; }
201 if !self.sstate.valid_state() || self.sstate.strm_no != self.num_streams {
202 return Err(InvalidData);
207 fn read_extradata(&mut self, size: usize) -> DemuxerResult<Option<Vec<u8>>> {
208 if size == 0 { return Ok(None); }
209 let mut edvec: Vec<u8> = Vec::with_capacity(size);
210 edvec.resize(size, 0);
211 self.src.read_buf(&mut edvec)?;
216 const CHUNKS: [RIFFParser; 6] = [
217 RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"hdrl")), parse: parse_hdrl },
218 RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"strl")), parse: parse_strl },
219 RIFFParser { tag: RIFFTag::Chunk(mktag!(b"avih")), parse: parse_avih },
220 RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strf")), parse: parse_strf },
221 RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strh")), parse: parse_strh },
222 RIFFParser { tag: RIFFTag::Chunk(mktag!(b"JUNK")), parse: parse_junk },
225 fn is_list_tag(tag: u32) -> bool {
226 for i in 0..CHUNKS.len() {
227 if let RIFFTag::List(ltag, _) = CHUNKS[i].tag {
236 #[allow(unused_variables)]
237 fn parse_hdrl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
241 #[allow(unused_variables)]
242 fn parse_strl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
246 #[allow(unused_variables)]
247 fn parse_strh(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
248 if size < 0x38 { return Err(InvalidData); }
249 let tag = dmx.src.read_u32be()?; //stream type
250 let fcc = dmx.src.read_u32be()?; //handler(fourcc)
251 dmx.src.read_u32le()?; //flags
252 dmx.src.read_skip(2)?; //priority
253 dmx.src.read_skip(2)?; //language
254 dmx.src.read_skip(4)?; //initial frames
255 dmx.tb_num = dmx.src.read_u32le()?; //scale
256 dmx.tb_den = dmx.src.read_u32le()?; //rate
257 dmx.src.read_skip(4)?; //start
258 dmx.src.read_skip(4)?; //length
259 dmx.src.read_skip(4)?; //buf size
260 dmx.src.read_skip(4)?; //quality
261 dmx.src.read_skip(4)?; //sample size
262 let a = dmx.src.read_u16le()?;
263 let b = dmx.src.read_u16le()?;
264 let c = dmx.src.read_u16le()?;
265 let d = dmx.src.read_u16le()?;
267 dmx.src.read_skip(size - 0x38)?;
269 if !dmx.sstate.valid_state() || dmx.sstate.strm_no >= dmx.num_streams {
270 return Err(InvalidData);
272 if tag == mktag!(b"vids") {
273 dmx.sstate.strm_type = Some(StreamType::Video);
274 } else if tag == mktag!(b"auds") {
275 dmx.sstate.strm_type = Some(StreamType::Audio);
277 dmx.sstate.strm_type = Some(StreamType::Data);
279 dmx.sstate.got_strf = false;
284 fn parse_strf(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
285 if let None = dmx.sstate.strm_type { return Err(InvalidData); }
286 match dmx.sstate.strm_type.unwrap() {
287 StreamType::Video => parse_strf_vids(dmx, strmgr, size),
288 StreamType::Audio => parse_strf_auds(dmx, strmgr, size),
289 _ => parse_strf_xxxx(dmx, strmgr, size),
293 #[allow(unused_variables)]
294 fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
295 if size < 40 { return Err(InvalidData); }
296 let bi_size = dmx.src.read_u32le()?;
297 if (bi_size as usize) > size { return Err(InvalidData); }
298 let width = dmx.src.read_u32le()?;
299 let height = dmx.src.read_u32le()? as i32;
300 let planes = dmx.src.read_u16le()?;
301 let bitcount = dmx.src.read_u16le()?;
302 let mut compression: [u8; 4] = [0; 4];
303 dmx.src.read_buf(&mut compression)?;
304 let img_size = dmx.src.read_u32le()?;
305 let xdpi = dmx.src.read_u32le()?;
306 let ydpi = dmx.src.read_u32le()?;
307 let colors = dmx.src.read_u32le()?;
308 let imp_colors = dmx.src.read_u32le()?;
310 let flip = height < 0;
311 let format = if bitcount > 8 { RGB24_FORMAT } else { PAL8_FORMAT };
312 let vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, PAL8_FORMAT);
313 let vci = NACodecTypeInfo::Video(vhdr);
314 let edata = dmx.read_extradata(size - 40)?;
315 let cname = match register::find_codec_from_avi_fourcc(&compression) {
319 let vinfo = NACodecInfo::new(cname, vci, edata);
320 let res = strmgr.add_stream(NAStream::new(StreamType::Video, dmx.sstate.strm_no as u32, vinfo, dmx.tb_num, dmx.tb_den));
321 if let None = res { return Err(MemoryError); }
326 #[allow(unused_variables)]
327 fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
328 if size < 16 { return Err(InvalidData); }
329 let w_format_tag = dmx.src.read_u16le()?;
330 let channels = dmx.src.read_u16le()?;
331 let samplespersec = dmx.src.read_u32le()?;
332 let avgbytespersec = dmx.src.read_u32le()?;
333 let block_align = dmx.src.read_u16le()?;
334 let bits_per_sample = dmx.src.read_u16le()? * 8;
336 let soniton = NASoniton::new(bits_per_sample as u8, SONITON_FLAG_SIGNED);
337 let ahdr = NAAudioInfo::new(samplespersec, channels as u8, soniton, block_align as usize);
338 let edata = dmx.read_extradata(size - 16)?;
339 let cname = match register::find_codec_from_wav_twocc(w_format_tag) {
343 let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata);
344 let res = strmgr.add_stream(NAStream::new(StreamType::Audio, dmx.sstate.strm_no as u32, ainfo, dmx.tb_num, dmx.tb_den));
345 if let None = res { return Err(MemoryError); }
350 fn parse_strf_xxxx(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
351 let edata = dmx.read_extradata(size)?;
352 let info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata);
353 let res = strmgr.add_stream(NAStream::new(StreamType::Data, dmx.sstate.strm_no as u32, info, dmx.tb_num, dmx.tb_den));
354 if let None = res { return Err(MemoryError); }
359 #[allow(unused_variables)]
360 fn parse_avih(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
361 if size < 0x38 { return Err(InvalidData); }
362 let timebase = dmx.src.read_u32le()?; //microsec per frame
363 dmx.src.read_skip(4)?; //max frame size
364 dmx.src.read_skip(4)?; //padding
365 dmx.src.read_u32le()?; //flags
366 let frames = dmx.src.read_u32le()?; //frames
367 dmx.src.read_skip(4)?; //initial frames
368 let streams = dmx.src.read_u32le()?; //streams
369 if streams > 100 { return Err(InvalidData); }
370 dmx.num_streams = streams as u8;
372 dmx.src.read_skip(4)?; //buf size
373 let width = dmx.src.read_u32le()?; //width
374 let height = dmx.src.read_u32le()? as i32; //height
375 dmx.src.read_skip(16)?; //reserved
377 dmx.cur_frame.resize(streams as usize, 0);
378 dmx.src.read_skip(size - 0x38)?;
382 #[allow(unused_variables)]
383 fn parse_junk(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
384 dmx.src.read_skip(size)?;
388 pub struct AVIDemuxerCreator { }
390 impl DemuxerCreator for AVIDemuxerCreator {
391 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<DemuxCore<'a> + 'a> {
392 Box::new(AVIDemuxer::new(br))
394 fn get_name(&self) -> &'static str { "avi" }
403 fn test_avi_demux() {
404 let mut file = File::open("assets/laser05.avi").unwrap();
405 let mut fr = FileReader::new_read(&mut file);
406 let mut br = ByteReader::new(&mut fr);
407 let mut dmx = AVIDemuxer::new(&mut br);
408 let mut sm = StreamManager::new();
409 dmx.open(&mut sm).unwrap();
412 let pktres = dmx.get_frame(&mut sm);
413 if let Err(e) = pktres {
414 if e == DemuxerError::EOF { break; }
417 let pkt = pktres.unwrap();
418 println!("Got {}", pkt);