--- /dev/null
+use nihav_core::demuxers::*;
+use nihav_registry::register::*;
+
+macro_rules! mktag {
+ ($a:expr, $b:expr, $c:expr, $d:expr) => ({
+ (($a as u32) << 24) | (($b as u32) << 16) | (($c as u32) << 8) | ($d as u32)
+ });
+ ($arr:expr) => ({
+ (($arr[0] as u32) << 24) | (($arr[1] as u32) << 16) | (($arr[2] as u32) << 8) | ($arr[3] as u32)
+ });
+}
+
+trait Skip64 {
+ fn skip64(&mut self, size: u64) -> ByteIOResult<()>;
+}
+
+impl<'a> Skip64 for ByteReader<'a> {
+ fn skip64(&mut self, size: u64) -> ByteIOResult<()> {
+ if (size as usize as u64) != size {
+ self.seek(SeekFrom::Current(size as i64))?;
+ } else {
+ self.read_skip(size as usize)?;
+ }
+ Ok(())
+ }
+}
+
+fn read_chunk_header(br: &mut ByteReader) -> DemuxerResult<(u32, u64)> {
+ let size = br.read_u32be()?;
+ let ctype = br.read_u32be()?;
+ if size == 0 {
+ Ok((ctype, br.left() as u64))
+ } else if size == 1 {
+ let size64 = br.read_u64be()?;
+ validate!(size64 >= 16);
+ Ok((ctype, size64 - 16))
+ } else {
+ validate!(size >= 8);
+ Ok((ctype, (size as u64) - 8))
+ }
+}
+
+struct RootChunkHandler {
+ ctype: u32,
+ parse: fn(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64>,
+}
+
+struct TrackChunkHandler {
+ ctype: u32,
+ parse: fn(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64>,
+}
+
+const IGNORED_CHUNKS: &[u32] = &[
+ mktag!(b"free"), mktag!(b"skip"), mktag!(b"udta"), mktag!(b"wide")
+];
+
+const ROOT_CHUNK_HANDLERS: &[RootChunkHandler] = &[
+ RootChunkHandler { ctype: mktag!(b"mdat"), parse: read_mdat },
+ RootChunkHandler { ctype: mktag!(b"moov"), parse: read_moov },
+];
+
+macro_rules! read_chunk_list {
+ (root; $name: expr, $fname: ident, $handlers: ident) => {
+ fn $fname(&mut self, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<()> {
+ self.depth += 1;
+ validate!(self.depth < 32);
+ let list_end = self.src.tell() + size;
+ while self.src.tell() < list_end {
+ let ret = read_chunk_header(&mut self.src);
+ if ret.is_err() { break; }
+ let (ctype, size) = ret.unwrap();
+ if self.src.tell() + size > list_end {
+ break;
+ }
+ if IGNORED_CHUNKS.contains(&ctype) {
+ self.src.skip64(size)?;
+ continue;
+ }
+ let handler = $handlers.iter().find(|x| x.ctype == ctype);
+ let read_size;
+ if let Some(ref handler) = handler {
+ read_size = (handler.parse)(self, strmgr, size)?;
+ } else {
+ println!("skipping unknown chunk {:08X} size {}", ctype, size);
+ read_size = 0;
+ }
+ validate!(read_size <= size);
+ self.src.skip64(size - read_size)?;
+ }
+ self.depth -= 1;
+ validate!(self.src.tell() == list_end);
+ Ok(())
+ }
+ };
+ (track; $name: expr, $fname: ident, $handlers: ident) => {
+ fn $fname(&mut self, br: &mut ByteReader, size: u64) -> DemuxerResult<()> {
+ self.depth += 1;
+ validate!(self.depth < 32);
+ let list_end = br.tell() + size;
+ while br.tell() < list_end {
+ let ret = read_chunk_header(br);
+ if ret.is_err() { break; }
+ let (ctype, size) = ret.unwrap();
+ if br.tell() + size > list_end {
+ break;
+ }
+ if IGNORED_CHUNKS.contains(&ctype) {
+ br.skip64(size)?;
+ continue;
+ }
+ let handler = $handlers.iter().find(|x| x.ctype == ctype);
+ let read_size;
+ if let Some(ref handler) = handler {
+ read_size = (handler.parse)(self, br, size)?;
+ } else {
+ read_size = 0;
+ }
+ validate!(read_size <= size);
+ br.skip64(size - read_size)?;
+ }
+ self.depth -= 1;
+ validate!(br.tell() == list_end);
+ Ok(())
+ }
+ }
+}
+
+fn skip_chunk(_track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ br.skip64(size)?;
+ Ok(size)
+}
+
+fn read_mdat(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
+ dmx.mdat_pos = dmx.src.tell();
+ dmx.mdat_size = size;
+ dmx.src.skip64(size)?;
+ Ok(size)
+}
+
+fn read_moov(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
+ dmx.read_moov(strmgr, size)?;
+ Ok(size)
+}
+
+const MOOV_CHUNK_HANDLERS: &[RootChunkHandler] = &[
+ RootChunkHandler { ctype: mktag!(b"mvhd"), parse: read_mvhd },
+ RootChunkHandler { ctype: mktag!(b"trak"), parse: read_trak },
+];
+
+fn read_mvhd(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
+ const KNOWN_MVHD_SIZE: u64 = 100;
+ let br = &mut dmx.src;
+ validate!(size >= KNOWN_MVHD_SIZE);
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ let _ctime = br.read_u32be()?;
+ let _mtime = br.read_u32be()?;
+ let tscale = br.read_u32be()?;
+ let duration = br.read_u32be()?;
+ let _pref_rate = br.read_u32be()?;
+ let _pref_volume = br.read_u16be()?;
+ br.read_skip(10)?;
+ br.read_skip(36)?; // matrix
+ let _preview_time = br.read_u32be()?;
+ let _preview_duration = br.read_u32be()?;
+ let _poster_time = br.read_u32be()?;
+ let _sel_time = br.read_u32be()?;
+ let _sel_duration = br.read_u32be()?;
+ let _cur_time = br.read_u32be()?;
+ let _next_track_id = br.read_u32be()?;
+ dmx.duration = duration;
+ dmx.tb_den = tscale;
+
+ Ok(KNOWN_MVHD_SIZE)
+}
+
+fn read_trak(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<u64> {
+ let mut track = Track::new(dmx.cur_track as u32, dmx.tb_den);
+ track.read_trak(&mut dmx.src, size)?;
+ validate!(track.tkhd_found && track.stsd_found);
+ validate!(strmgr.get_stream_by_id(track.track_id).is_none());
+ dmx.cur_track += 1;
+ let mut str = None;
+ std::mem::swap(&mut track.stream, &mut str);
+ if let Some(stream) = str {
+ let str_id = strmgr.add_stream(stream).unwrap();
+ track.track_str_id = str_id;
+ }
+ dmx.tracks.push(track);
+ Ok(size)
+}
+
+const TRAK_CHUNK_HANDLERS: &[TrackChunkHandler] = &[
+ TrackChunkHandler { ctype: mktag!(b"clip"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"matt"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"edts"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"tref"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"load"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"imap"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"tkhd"), parse: read_tkhd },
+ TrackChunkHandler { ctype: mktag!(b"mdia"), parse: read_mdia },
+];
+
+fn read_tkhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ const KNOWN_TKHD_SIZE: u64 = 84;
+ validate!(size >= KNOWN_TKHD_SIZE);
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ let _ctime = br.read_u32be()?;
+ let _mtime = br.read_u32be()?;
+ let track_id = br.read_u32be()?;
+ br.read_skip(4)?;
+ let _duration = br.read_u32be()?;
+ br.read_skip(8)?;
+ let _layer = br.read_u16be()?;
+ let _alt_group = br.read_u16be()?;
+ let _volume = br.read_u16be()?;
+ br.read_skip(2)?;
+ br.read_skip(36)?; // matrix
+ let width = br.read_u32be()? as usize;
+ let height = br.read_u32be()? as usize;
+ track.width = width >> 16;
+ track.height = height >> 16;
+ track.track_id = track_id;
+
+ track.tkhd_found = true;
+ Ok(KNOWN_TKHD_SIZE)
+}
+
+fn read_mdia(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ track.stream_type = StreamType::None;
+ track.read_mdia(br, size)?;
+ Ok(size)
+}
+
+const MDIA_CHUNK_HANDLERS: &[TrackChunkHandler] = &[
+ TrackChunkHandler { ctype: mktag!(b"mdhd"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"hdlr"), parse: read_hdlr },
+ TrackChunkHandler { ctype: mktag!(b"minf"), parse: read_minf },
+];
+
+fn read_hdlr(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ const KNOWN_HDLR_SIZE: u64 = 24;
+ validate!(size >= KNOWN_HDLR_SIZE);
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let flags = br.read_u24be()?;
+ validate!(flags == 0);
+ let comp_type = br.read_u32be()?;
+ let comp_subtype = br.read_u32be()?;
+ let _comp_manufacturer = br.read_u32be()?;
+ let _comp_flags = br.read_u32be()?;
+ let _comp_flags_mask = br.read_u32be()?;
+
+ if comp_type == mktag!(b"mhlr") {
+ if comp_subtype == mktag!(b"vide") {
+ track.stream_type = StreamType::Video;
+ } else if comp_subtype == mktag!(b"soun") {
+ track.stream_type = StreamType::Audio;
+ } else {
+ track.stream_type = StreamType::Data;
+ }
+ } else if comp_type == mktag!(b"dhlr") {
+ track.stream_type = StreamType::Data;
+ } else {
+ println!("Unknown stream type");
+ track.stream_type = StreamType::Data;
+ }
+
+ Ok(KNOWN_HDLR_SIZE)
+}
+
+fn read_minf(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ track.read_minf(br, size)?;
+ Ok(size)
+}
+
+const MINF_CHUNK_HANDLERS: &[TrackChunkHandler] = &[
+ TrackChunkHandler { ctype: mktag!(b"hdlr"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"dinf"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"vmhd"), parse: read_vmhd },
+ TrackChunkHandler { ctype: mktag!(b"smhd"), parse: read_smhd },
+ TrackChunkHandler { ctype: mktag!(b"gmhd"), parse: read_gmhd },
+ TrackChunkHandler { ctype: mktag!(b"gmin"), parse: read_gmin },
+ TrackChunkHandler { ctype: mktag!(b"stbl"), parse: read_stbl },
+];
+
+fn read_vmhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ const KNOWN_VMHD_SIZE: u64 = 12;
+ validate!(track.stream_type == StreamType::Video);
+ validate!(size >= KNOWN_VMHD_SIZE);
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ br.read_skip(2)?; // graphics mode
+ br.read_skip(6)?; // opcolor
+ Ok(KNOWN_VMHD_SIZE)
+}
+
+fn read_smhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ const KNOWN_SMHD_SIZE: u64 = 8;
+ validate!(track.stream_type == StreamType::Audio);
+ validate!(size >= KNOWN_SMHD_SIZE);
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ br.read_skip(2)?; // balance
+ br.read_skip(2)?;
+ Ok(KNOWN_SMHD_SIZE)
+}
+
+fn read_gmhd(track: &mut Track, _br: &mut ByteReader, _size: u64) -> DemuxerResult<u64> {
+ validate!(track.stream_type == StreamType::Data);
+ Ok(0)
+}
+
+fn read_gmin(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ validate!(track.stream_type == StreamType::Data);
+ const KNOWN_GMIN_SIZE: u64 = 16;
+ validate!(size >= KNOWN_GMIN_SIZE);
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ br.read_skip(2)?; // graphics mode
+ br.read_skip(6)?; // opcolor
+ br.read_skip(2)?; // balance
+ br.read_skip(2)?;
+ Ok(KNOWN_GMIN_SIZE)
+}
+
+fn read_stbl(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ track.read_stbl(br, size)?;
+ Ok(size)
+}
+
+const STBL_CHUNK_HANDLERS: &[TrackChunkHandler] = &[
+ TrackChunkHandler { ctype: mktag!(b"stsd"), parse: read_stsd },
+ TrackChunkHandler { ctype: mktag!(b"stts"), parse: skip_chunk },
+ TrackChunkHandler { ctype: mktag!(b"stss"), parse: read_stss },
+ TrackChunkHandler { ctype: mktag!(b"stsc"), parse: read_stsc },
+ TrackChunkHandler { ctype: mktag!(b"stsz"), parse: read_stsz },
+ TrackChunkHandler { ctype: mktag!(b"stco"), parse: read_stco },
+ TrackChunkHandler { ctype: mktag!(b"stsh"), parse: skip_chunk },
+];
+
+fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ const KNOWN_STSD_SIZE: u64 = 24;
+ validate!(size >= KNOWN_STSD_SIZE);
+ let start_pos = br.tell();
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ let entries = br.read_u32be()?;
+ validate!(entries > 0);
+ let esize = br.read_u32be()? as u64;
+ validate!(esize + 8 <= size);
+ let mut fcc = [0u8; 4];
+ br.read_buf(&mut fcc)?;
+ br.read_skip(6)?;
+ let _data_ref = br.read_u16be()?;
+
+ track.fcc = fcc;
+
+ let codec_info;
+ match track.stream_type {
+ StreamType::Video => {
+ let _ver = br.read_u16be()?;
+ let _revision = br.read_u16le()?;
+ let _vendor = br.read_u32be()?;
+ let _temp_quality = br.read_u32be()?;
+ let _spat_quality = br.read_u32be()?;
+ let width = br.read_u16be()? as usize;
+ let height = br.read_u16be()? as usize;
+ let _hor_res = br.read_u32be()?;
+ let _vert_res = br.read_u32be()?;
+ let data_size = br.read_u32be()?;
+ validate!(data_size == 0);
+ let _frame_count = br.read_u16be()? as usize;
+ let _cname_len = br.read_byte()? as usize;
+ br.read_skip(31)?; // actual compressor name
+ let depth = br.read_u16be()?;
+ let ctable_id = br.read_u16be()?;
+ validate!((depth <= 8) || (ctable_id == 0xFFFF));
+ if ctable_id == 0 {
+unimplemented!();
+ }
+// todo other atoms, put as extradata
+ let cname = if let Some(name) = find_codec_from_mov_video_fourcc(&fcc) {
+ name
+ } else if let Some(name) = find_codec_from_avi_fourcc(&fcc) {
+ name
+ } else {
+ "unknown"
+ };
+ let format = if depth > 8 { RGB24_FORMAT } else { PAL8_FORMAT };
+ let vhdr = NAVideoInfo::new(width, height, false, format);
+ let edata;
+ if br.tell() - start_pos + 4 < size {
+//todo skip various common atoms
+ let edata_size = br.read_u32be()? as usize;
+ let mut buf = vec![0; edata_size];
+ br.read_buf(buf.as_mut_slice())?;
+ edata = Some(buf);
+ } else {
+ edata = None;
+ }
+ codec_info = NACodecInfo::new(cname, NACodecTypeInfo::Video(vhdr), edata);
+ },
+ StreamType::Audio => {
+ let _ver = br.read_u16be()?;
+ let _revision = br.read_u16le()?;
+ let _vendor = br.read_u32be()?;
+ let nchannels = br.read_u16be()?;
+ validate!(nchannels <= 64);
+ let sample_size = br.read_u16be()?;
+ validate!(sample_size <= 128);
+ let _compr_id = br.read_u16be()?;
+ let packet_size = br.read_u16be()? as usize;
+ validate!(packet_size == 0);
+ let sample_rate = br.read_u32be()?;
+ validate!(sample_rate > 0);
+ let cname = if let Some(name) = find_codec_from_mov_audio_fourcc(&fcc) {
+ name
+ } else if let (true, Some(name)) = ((fcc[0] == b'm' && fcc[1] == b's'), find_codec_from_wav_twocc(u16::from(fcc[2]) * 256 + u16::from(fcc[3]))) {
+ name
+ } else {
+ "unknown"
+ };
+//todo adjust format for various PCM kinds
+ let soniton = NASoniton::new(sample_size as u8, SONITON_FLAG_SIGNED | SONITON_FLAG_BE);
+ let block_align = 1;
+ let ahdr = NAAudioInfo::new(sample_rate >> 16, nchannels as u8, soniton, block_align);
+ let edata = None;
+ codec_info = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata);
+ track.channels = nchannels as usize;
+ track.bits = sample_size as usize;
+ },
+ StreamType::None => {
+ return Err(DemuxerError::InvalidData);
+ },
+ _ => {
+//todo put it all into extradata
+ let edata = None;
+ codec_info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata);
+ },
+ };
+ let read_size = br.tell() - start_pos;
+ validate!(read_size <= size);
+ track.stream = Some(NAStream::new(track.stream_type, track.track_no, codec_info, 1, track.tb_den));
+ track.stsd_found = true;
+ Ok(read_size)
+}
+
+fn read_stss(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ let entries = br.read_u32be()? as usize;
+ validate!(entries < ((std::u32::MAX >> 2) - 8) as usize);
+ validate!((entries * 4 + 8) as u64 == size);
+ track.keyframes = Vec::with_capacity(entries);
+ let mut last_sample_no = 0;
+ for _ in 0..entries {
+ let sample_no = br.read_u32be()?;
+ validate!(sample_no > last_sample_no);
+ track.keyframes.push(sample_no);
+ last_sample_no = sample_no;
+ }
+ Ok(size)
+}
+
+fn read_stsc(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ let entries = br.read_u32be()? as usize;
+ validate!(entries < ((std::u32::MAX / 12) - 8) as usize);
+ validate!((entries * 12 + 8) as u64 == size);
+ track.sample_map = Vec::with_capacity(entries);
+ let mut last_sample_no = 0;
+ for _i in 0..entries {
+ let sample_no = br.read_u32be()?;
+ validate!(sample_no > last_sample_no);
+ let nsamples = br.read_u32be()?;
+ let _sample_desc = br.read_u32be()?;
+ track.sample_map.push((sample_no, nsamples));
+ last_sample_no = sample_no;
+ }
+ Ok(size)
+}
+
+fn read_stsz(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ let sample_size = br.read_u32be()?;
+ if sample_size != 0 {
+ track.sample_size = sample_size;
+ Ok(8)
+ } else {
+ let entries = br.read_u32be()? as usize;
+ validate!((entries * 4 + 12) as u64 == size);
+ track.chunk_sizes = Vec::with_capacity(entries);
+ for _ in 0..entries {
+ let sample_size = br.read_u32be()?;
+ track.chunk_sizes.push(sample_size);
+ }
+ Ok(size)
+ }
+}
+
+fn read_stco(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult<u64> {
+ let version = br.read_byte()?;
+ validate!(version == 0);
+ let _flags = br.read_u24be()?;
+ let entries = br.read_u32be()? as usize;
+ validate!((entries * 4 + 8) as u64 == size);
+ track.chunk_offsets = Vec::with_capacity(entries);
+ for _i in 0..entries {
+ let sample_offset = br.read_u32be()?;
+ track.chunk_offsets.push(u64::from(sample_offset));
+ }
+ Ok(size)
+}
+
+struct MOVDemuxer<'a> {
+ src: &'a mut ByteReader<'a>,
+ depth: usize,
+ mdat_pos: u64,
+ mdat_size: u64,
+ tracks: Vec<Track>,
+ cur_track: usize,
+ tb_den: u32,
+ duration: u32,
+}
+
+struct Track {
+ track_id: u32,
+ track_str_id: usize,
+ track_no: u32,
+ tb_den: u32,
+ depth: u8,
+ tkhd_found: bool,
+ stsd_found: bool,
+ stream_type: StreamType,
+ width: usize,
+ height: usize,
+ channels: usize,
+ bits: usize,
+ fcc: [u8; 4],
+ keyframes: Vec<u32>,
+ chunk_sizes: Vec<u32>,
+ chunk_offsets: Vec<u64>,
+ sample_map: Vec<(u32, u32)>,
+ sample_size: u32,
+ stream: Option<NAStream>,
+ cur_chunk: usize,
+ cur_sample: usize,
+ samples_left: usize,
+ last_offset: u64,
+}
+
+impl Track {
+ fn new(track_no: u32, tb_den: u32) -> Self {
+ Self {
+ tkhd_found: false,
+ stsd_found: false,
+ track_id: 0,
+ track_str_id: 0,
+ track_no,
+ tb_den,
+ stream_type: StreamType::None,
+ width: 0,
+ height: 0,
+ channels: 0,
+ bits: 0,
+ fcc: [0; 4],
+ keyframes: Vec::new(),
+ chunk_sizes: Vec::new(),
+ chunk_offsets: Vec::new(),
+ sample_map: Vec::new(),
+ sample_size: 0,
+ stream: None,
+ depth: 0,
+ cur_chunk: 0,
+ cur_sample: 0,
+ samples_left: 0,
+ last_offset: 0,
+ }
+ }
+ read_chunk_list!(track; "trak", read_trak, TRAK_CHUNK_HANDLERS);
+ read_chunk_list!(track; "mdia", read_mdia, MDIA_CHUNK_HANDLERS);
+ read_chunk_list!(track; "minf", read_minf, MINF_CHUNK_HANDLERS);
+ read_chunk_list!(track; "stbl", read_stbl, STBL_CHUNK_HANDLERS);
+ fn fill_seek_index(&self, seek_index: &mut SeekIndex) {
+ if self.keyframes.len() > 0 {
+ seek_index.mode = SeekIndexMode::Present;
+ }
+ for kf_time in self.keyframes.iter() {
+ let pts = u64::from(*kf_time - 1);
+ let time = NATimeInfo::ts_to_time(pts, 1000, 1, self.tb_den);
+ let idx = (*kf_time - 1) as usize;
+ if idx < self.chunk_offsets.len() {
+ let pos = self.chunk_offsets[idx];
+ seek_index.add_entry(self.track_no as u32, SeekEntry { time, pts, pos });
+ }
+ }
+ }
+ fn calculate_chunk_size(&self, nsamp: usize) -> usize {
+ if nsamp == 0 {
+ self.sample_size as usize
+ } else {
+ match &self.fcc {
+ b"NONE" | b"raw " | b"twos" | b"sowt" => {
+ (nsamp * self.bits * self.channels + 7) >> 3
+ },
+ b"ima4" => {
+ let nblocks = (nsamp + 63) >> 6;
+ nblocks * 34 * self.channels
+ },
+ b"MAC3" => {
+ (nsamp + 5) / 6 * 2 * self.channels
+ },
+ b"MAC6" => {
+ (nsamp + 5) / 6 * self.channels
+ },
+ b"in24" => nsamp * 3 * self.channels,
+ b"in32" | b"fl32" => nsamp * 4 * self.channels,
+ b"fl64" => nsamp * 8 * self.channels,
+ b"ulaw" | b"alaw" => nsamp,
+ b"ms\x00\x02" => { //MS ADPCM
+ ((nsamp - 1) / 2 + 7) * self.channels
+ },
+ b"ms\x00\x21" => { //IMA ADPCM
+ (nsamp / 2 + 4) * self.channels
+ },
+ _ => self.sample_size as usize,
+ }
+ }
+ }
+ fn get_next_chunk(&mut self) -> Option<(NATimeInfo, u64, usize)> {
+ let pts = NATimeInfo::new(Some(self.cur_sample as u64), None, None, 1, self.tb_den);
+//todo dts decoding
+ if self.chunk_offsets.len() == self.chunk_sizes.len() { // simple one-to-one mapping
+ if self.cur_sample >= self.chunk_sizes.len() {
+ return None;
+ }
+ let offset = self.chunk_offsets[self.cur_sample];
+ let size = self.chunk_sizes[self.cur_sample] as usize;
+ self.cur_sample += 1;
+ Some((pts, offset, size))
+ } else {
+ if self.samples_left == 0 {
+ if self.cur_chunk >= self.chunk_offsets.len() {
+ return None;
+ }
+ for (idx, samples) in self.sample_map.iter() {
+ if *idx as usize <= self.cur_chunk + 1 {
+ self.samples_left = *samples as usize;
+ } else {
+ break;
+ }
+ }
+ self.last_offset = self.chunk_offsets[self.cur_chunk];
+ self.cur_chunk += 1;
+ }
+ let offset = self.last_offset;
+ let size = self.get_size(self.cur_sample);
+ self.last_offset += size as u64;
+ if self.stream_type == StreamType::Video {
+ self.samples_left -= 1;
+ } else {
+ self.samples_left = 0;
+ }
+ self.cur_sample += 1;
+ Some((pts, offset, size))
+ }
+ }
+ fn get_size(&self, sample_no: usize) -> usize {
+ if self.chunk_sizes.len() > 0 {
+ self.chunk_sizes[sample_no] as usize
+ } else if self.sample_map.len() > 0 {
+ let mut nsamp = 0;
+ for (idx, samples) in self.sample_map.iter() {
+ if *idx as usize <= self.cur_chunk {
+ nsamp = *samples;
+ } else {
+ break;
+ }
+ }
+ self.calculate_chunk_size(nsamp as usize)
+ } else {
+ self.sample_size as usize
+ }
+ }
+ fn seek(&mut self, pts: u64) {
+ self.cur_sample = pts as usize;
+ self.samples_left = 0;
+ if self.stream_type == StreamType::Audio {
+ self.cur_chunk = self.cur_sample;
+ } else if self.chunk_offsets.len() != self.chunk_sizes.len() && self.sample_map.len() > 0{
+ let mut csamp = 0;
+ self.cur_chunk = 0;
+ let mut cmap = self.sample_map.iter();
+ let mut cur_samps = 0;
+ let (mut next_idx, mut next_samples) = cmap.next().unwrap();
+ loop {
+ if self.cur_chunk == next_idx as usize {
+ self.samples_left = cur_samps;
+ cur_samps = next_samples as usize;
+ if let Some((new_idx, new_samples)) = cmap.next() {
+ next_idx = *new_idx;
+ next_samples = *new_samples;
+ }
+ }
+ csamp += cur_samps;
+ if csamp >= self.cur_sample {
+ self.last_offset = self.chunk_offsets[self.cur_chunk];
+ break;
+ }
+ self.cur_chunk += 1;
+ }
+ csamp -= cur_samps;
+ for sample_no in csamp..self.cur_chunk {
+ self.last_offset += self.get_size(sample_no) as u64;
+ }
+ self.samples_left = self.cur_sample - csamp - cur_samps;
+ }
+ }
+}
+
+impl<'a> DemuxCore<'a> for MOVDemuxer<'a> {
+ fn open(&mut self, strmgr: &mut StreamManager, seek_index: &mut SeekIndex) -> DemuxerResult<()> {
+ self.read_root(strmgr)?;
+ validate!(self.mdat_pos > 0);
+ validate!(self.tracks.len() > 0);
+ for track in self.tracks.iter() {
+ track.fill_seek_index(seek_index);
+ }
+ self.src.seek(SeekFrom::Start(self.mdat_pos))?;
+ self.cur_track = 0;
+ Ok(())
+ }
+
+ fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
+ if self.tracks.len() == 0 {
+ return Err(DemuxerError::EOF);
+ }
+ for _ in 0..self.tracks.len() {
+ if self.cur_track >= self.tracks.len() {
+ self.cur_track = 0;
+ }
+ let track = &mut self.tracks[self.cur_track];
+ self.cur_track += 1;
+ if let Some((pts, offset, size)) = track.get_next_chunk() {
+ let str = strmgr.get_stream(track.track_str_id);
+ if str.is_none() { return Err(DemuxerError::InvalidData); }
+ let stream = str.unwrap();
+ self.src.seek(SeekFrom::Start(offset))?;
+ let pkt = self.src.read_packet(stream, pts, false, size)?;
+ return Ok(pkt);
+ }
+ }
+ return Err(DemuxerError::EOF);
+ }
+
+ fn seek(&mut self, time: u64, seek_index: &SeekIndex) -> DemuxerResult<()> {
+ let ret = seek_index.find_pos(time);
+ if ret.is_none() {
+ return Err(DemuxerError::SeekError);
+ }
+ let seek_info = ret.unwrap();
+ for track in self.tracks.iter_mut() {
+ track.seek(seek_info.pts);
+ }
+ Ok(())
+ }
+}
+
+impl<'a> MOVDemuxer<'a> {
+ fn new(io: &'a mut ByteReader<'a>) -> Self {
+ MOVDemuxer {
+ src: io,
+ depth: 0,
+ mdat_pos: 0,
+ mdat_size: 0,
+ tracks: Vec::with_capacity(2),
+ cur_track: 0,
+ tb_den: 0,
+ duration: 0,
+ }
+ }
+ fn read_root(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
+ self.depth = 0;
+ while self.src.left() != 0 {
+ let ret = read_chunk_header(&mut self.src);
+ if ret.is_err() { break; }
+ let (ctype, size) = ret.unwrap();
+ if IGNORED_CHUNKS.contains(&ctype) {
+ self.src.skip64(size)?;
+ continue;
+ }
+ let handler = ROOT_CHUNK_HANDLERS.iter().find(|x| x.ctype == ctype);
+ let read_size;
+ if let Some(ref handler) = handler {
+ read_size = (handler.parse)(self, strmgr, size)?;
+ } else {
+ println!("skipping unknown chunk {:08X} size {}", ctype, size);
+ read_size = 0;
+ }
+ validate!(read_size <= size);
+ self.src.skip64(size - read_size)?;
+ }
+//todo check if all needed chunks are found
+ Ok(())
+ }
+ read_chunk_list!(root; "moov", read_moov, MOOV_CHUNK_HANDLERS);
+}
+
+pub struct MOVDemuxerCreator { }
+
+impl DemuxerCreator for MOVDemuxerCreator {
+ fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
+ Box::new(MOVDemuxer::new(br))
+ }
+ fn get_name(&self) -> &'static str { "mov" }
+}
+
+#[cfg(test)]
+mod test {
+ use super::*;
+ use std::fs::File;
+
+ #[test]
+ fn test_mov_demux() {
+ let mut file = File::open("assets/Indeo/cubes.mov").unwrap();
+ let mut fr = FileReader::new_read(&mut file);
+ let mut br = ByteReader::new(&mut fr);
+ let mut dmx = MOVDemuxer::new(&mut br);
+ let mut sm = StreamManager::new();
+ let mut si = SeekIndex::new();
+ dmx.open(&mut sm, &mut si).unwrap();
+
+ loop {
+ let pktres = dmx.get_frame(&mut sm);
+ if let Err(e) = pktres {
+ if e == DemuxerError::EOF { break; }
+ panic!("error");
+ }
+ let pkt = pktres.unwrap();
+ println!("Got {}", pkt);
+ }
+ }
+}
projects / nihav.git / commitdiff