1 use nihav_core::demuxers::*;
2 use nihav_core::register;
3 use nihav_core::demuxers::DemuxerError::*;
6 ($a:expr, $b:expr, $c:expr, $d:expr) => ({
7 (($a as u32) << 24) | (($b as u32) << 16) | (($c as u32) << 8) | ($d as u32)
10 (($arr[0] as u32) << 24) | (($arr[1] as u32) << 16) | (($arr[2] as u32) << 8) | ($arr[3] as u32)
17 strm_type: Option<StreamType>,
22 StreamState { strm_no: 0, got_strf: true, strm_type: None }
25 self.strm_type = None;
29 fn valid_state(&self) -> bool {
30 match self.strm_type {
31 None => self.got_strf,
38 struct AVIDemuxer<'a> {
39 src: &'a mut ByteReader<'a>,
49 #[derive(Debug,Clone,Copy,PartialEq)]
57 parse: fn(&mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize>,
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)?;
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];
71 if (self.src.tell() & 1) == 1 {
72 self.src.read_skip(1)?;
74 if self.movi_size == 0 { return Err(EOF); }
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); }
84 if mktag!(tag) == mktag!(b"LIST") {
86 self.src.read_skip(4)?;
87 if self.movi_size == 0 { return Err(EOF); }
90 if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' {
91 return Err(InvalidData);
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 let None = str { return Err(InvalidData); }
96 let stream = str.unwrap();
99 if self.movi_size == 0 { return Err(EOF); }
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;
112 #[allow(unused_variables)]
113 fn seek(&mut self, time: u64) -> DemuxerResult<()> {
118 impl<'a> AVIDemuxer<'a> {
119 fn new(io: &'a mut ByteReader<'a>) -> Self {
121 cur_frame: Vec::new(),
126 sstate: StreamState::new(),
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); }
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));
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));
148 for i in 0..CHUNKS.len() {
149 if RIFFTag::Chunk(tag) == CHUNKS[i].tag {
150 let psize = (CHUNKS[i].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));
155 if RIFFTag::List(tag, ltag) == CHUNKS[i].tag {
156 let mut rest_size = size - 4;
157 let psize = (CHUNKS[i].parse)(self, strmgr, rest_size)?;
158 if psize > rest_size { return Err(InvalidData); }
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); }
164 if (psize & 1) == 1 {
171 return Ok((size + 8, false));
175 self.src.read_skip(size)?;
177 if size < 4 { return Err(InvalidData); }
178 self.src.read_skip(size - 4)?;
180 if (size & 1) == 1 { self.src.read_skip(1)?; }
181 return Ok((size + 8, false));
184 fn read_header(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
185 let riff_tag = self.src.read_u32be()?;
186 let size = self.src.read_u32le()? as usize;
187 let avi_tag = self.src.read_u32be()?;
188 if riff_tag != mktag!(b"RIFF") || avi_tag != mktag!(b"AVI ") {
189 return Err(InvalidData);
192 let mut rest_size = size;
194 let (csz, end) = self.parse_chunk(strmgr, RIFFTag::List(mktag!(b"LIST"), mktag!(b"movi")), rest_size,0)?;
195 if end { self.movi_size = csz - 4; break; }
198 if !self.sstate.valid_state() || self.sstate.strm_no != self.num_streams {
199 return Err(InvalidData);
204 fn read_extradata(&mut self, size: usize) -> DemuxerResult<Option<Vec<u8>>> {
205 if size == 0 { return Ok(None); }
206 let mut edvec: Vec<u8> = Vec::with_capacity(size);
207 edvec.resize(size, 0);
208 self.src.read_buf(&mut edvec)?;
213 const CHUNKS: [RIFFParser; 6] = [
214 RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"hdrl")), parse: parse_hdrl },
215 RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"strl")), parse: parse_strl },
216 RIFFParser { tag: RIFFTag::Chunk(mktag!(b"avih")), parse: parse_avih },
217 RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strf")), parse: parse_strf },
218 RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strh")), parse: parse_strh },
219 RIFFParser { tag: RIFFTag::Chunk(mktag!(b"JUNK")), parse: parse_junk },
222 fn is_list_tag(tag: u32) -> bool {
223 for i in 0..CHUNKS.len() {
224 if let RIFFTag::List(ltag, _) = CHUNKS[i].tag {
233 #[allow(unused_variables)]
234 fn parse_hdrl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
238 #[allow(unused_variables)]
239 fn parse_strl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
243 #[allow(unused_variables)]
244 fn parse_strh(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
245 if size < 0x38 { return Err(InvalidData); }
246 let tag = dmx.src.read_u32be()?; //stream type
247 let fcc = dmx.src.read_u32be()?; //handler(fourcc)
248 dmx.src.read_u32le()?; //flags
249 dmx.src.read_skip(2)?; //priority
250 dmx.src.read_skip(2)?; //language
251 dmx.src.read_skip(4)?; //initial frames
252 dmx.tb_num = dmx.src.read_u32le()?; //scale
253 dmx.tb_den = dmx.src.read_u32le()?; //rate
254 dmx.src.read_skip(4)?; //start
255 dmx.src.read_skip(4)?; //length
256 dmx.src.read_skip(4)?; //buf size
257 dmx.src.read_skip(4)?; //quality
258 dmx.src.read_skip(4)?; //sample size
259 let a = dmx.src.read_u16le()?;
260 let b = dmx.src.read_u16le()?;
261 let c = dmx.src.read_u16le()?;
262 let d = dmx.src.read_u16le()?;
264 dmx.src.read_skip(size - 0x38)?;
266 if !dmx.sstate.valid_state() || dmx.sstate.strm_no >= dmx.num_streams {
267 return Err(InvalidData);
269 if tag == mktag!(b"vids") {
270 dmx.sstate.strm_type = Some(StreamType::Video);
271 } else if tag == mktag!(b"auds") {
272 dmx.sstate.strm_type = Some(StreamType::Audio);
274 dmx.sstate.strm_type = Some(StreamType::Data);
276 dmx.sstate.got_strf = false;
281 fn parse_strf(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
282 if let None = dmx.sstate.strm_type { return Err(InvalidData); }
283 match dmx.sstate.strm_type.unwrap() {
284 StreamType::Video => parse_strf_vids(dmx, strmgr, size),
285 StreamType::Audio => parse_strf_auds(dmx, strmgr, size),
286 _ => parse_strf_xxxx(dmx, strmgr, size),
290 #[allow(unused_variables)]
291 fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
292 if size < 40 { return Err(InvalidData); }
293 let bi_size = dmx.src.read_u32le()?;
294 if (bi_size as usize) > size { return Err(InvalidData); }
295 let width = dmx.src.read_u32le()?;
296 let height = dmx.src.read_u32le()? as i32;
297 let planes = dmx.src.read_u16le()?;
298 let bitcount = dmx.src.read_u16le()?;
299 let mut compression: [u8; 4] = [0; 4];
300 dmx.src.read_buf(&mut compression)?;
301 let img_size = dmx.src.read_u32le()?;
302 let xdpi = dmx.src.read_u32le()?;
303 let ydpi = dmx.src.read_u32le()?;
304 let colors = dmx.src.read_u32le()?;
305 let imp_colors = dmx.src.read_u32le()?;
307 let flip = height < 0;
308 let format = if bitcount > 8 { RGB24_FORMAT } else { PAL8_FORMAT };
309 let vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, PAL8_FORMAT);
310 let vci = NACodecTypeInfo::Video(vhdr);
311 let edata = dmx.read_extradata(size - 40)?;
312 let cname = match register::find_codec_from_avi_fourcc(&compression) {
316 let vinfo = NACodecInfo::new(cname, vci, edata);
317 let res = strmgr.add_stream(NAStream::new(StreamType::Video, dmx.sstate.strm_no as u32, vinfo, dmx.tb_num, dmx.tb_den));
318 if let None = res { return Err(MemoryError); }
323 #[allow(unused_variables)]
324 fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
325 if size < 16 { return Err(InvalidData); }
326 let w_format_tag = dmx.src.read_u16le()?;
327 let channels = dmx.src.read_u16le()?;
328 let samplespersec = dmx.src.read_u32le()?;
329 let avgbytespersec = dmx.src.read_u32le()?;
330 let block_align = dmx.src.read_u16le()?;
331 let bits_per_sample = dmx.src.read_u16le()? * 8;
333 let soniton = NASoniton::new(bits_per_sample as u8, SONITON_FLAG_SIGNED);
334 let ahdr = NAAudioInfo::new(samplespersec, channels as u8, soniton, block_align as usize);
335 let edata = dmx.read_extradata(size - 16)?;
336 let cname = match register::find_codec_from_wav_twocc(w_format_tag) {
340 let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata);
341 let res = strmgr.add_stream(NAStream::new(StreamType::Audio, dmx.sstate.strm_no as u32, ainfo, dmx.tb_num, dmx.tb_den));
342 if let None = res { return Err(MemoryError); }
347 fn parse_strf_xxxx(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
348 let edata = dmx.read_extradata(size)?;
349 let info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata);
350 let res = strmgr.add_stream(NAStream::new(StreamType::Data, dmx.sstate.strm_no as u32, info, dmx.tb_num, dmx.tb_den));
351 if let None = res { return Err(MemoryError); }
356 #[allow(unused_variables)]
357 fn parse_avih(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
358 if size < 0x38 { return Err(InvalidData); }
359 let timebase = dmx.src.read_u32le()?; //microsec per frame
360 dmx.src.read_skip(4)?; //max frame size
361 dmx.src.read_skip(4)?; //padding
362 dmx.src.read_u32le()?; //flags
363 let frames = dmx.src.read_u32le()?; //frames
364 dmx.src.read_skip(4)?; //initial frames
365 let streams = dmx.src.read_u32le()?; //streams
366 if streams > 100 { return Err(InvalidData); }
367 dmx.num_streams = streams as u8;
369 dmx.src.read_skip(4)?; //buf size
370 let width = dmx.src.read_u32le()?; //width
371 let height = dmx.src.read_u32le()? as i32; //height
372 dmx.src.read_skip(16)?; //reserved
374 dmx.cur_frame.resize(streams as usize, 0);
375 dmx.src.read_skip(size - 0x38)?;
379 #[allow(unused_variables)]
380 fn parse_junk(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
381 dmx.src.read_skip(size)?;
385 pub struct AVIDemuxerCreator { }
387 impl DemuxerCreator for AVIDemuxerCreator {
388 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<DemuxCore<'a> + 'a> {
389 Box::new(AVIDemuxer::new(br))
391 fn get_name(&self) -> &'static str { "avi" }
400 fn test_avi_demux() {
401 let mut file = File::open("assets/Indeo/laser05.avi").unwrap();
402 let mut fr = FileReader::new_read(&mut file);
403 let mut br = ByteReader::new(&mut fr);
404 let mut dmx = AVIDemuxer::new(&mut br);
405 let mut sm = StreamManager::new();
406 dmx.open(&mut sm).unwrap();
409 let pktres = dmx.get_frame(&mut sm);
410 if let Err(e) = pktres {
411 if e == DemuxerError::EOF { break; }
414 let pkt = pktres.unwrap();
415 println!("Got {}", pkt);