X-Git-Url: https://git.nihav.org/?p=nihav.git;a=blobdiff_plain;f=nihav-commonfmt%2Fsrc%2Fdemuxers%2Fmov.rs;h=745f4402246d0e7f1484fc5af0f4c0688261a384;hp=9236baa1b0667d0132745e31e3465d959dafe193;hb=07972bf3d6de58d3e23e05101cda79482e76ac4c;hpb=a480a0de101483d802a11e72d758dae00fa4860a diff --git a/nihav-commonfmt/src/demuxers/mov.rs b/nihav-commonfmt/src/demuxers/mov.rs index 9236baa..745f440 100644 --- a/nihav-commonfmt/src/demuxers/mov.rs +++ b/nihav-commonfmt/src/demuxers/mov.rs @@ -78,8 +78,28 @@ const ROOT_CHUNK_HANDLERS: &[RootChunkHandler] = &[ RootChunkHandler { ctype: mktag!(b"ftyp"), parse: read_ftyp }, RootChunkHandler { ctype: mktag!(b"mdat"), parse: read_mdat }, RootChunkHandler { ctype: mktag!(b"moov"), parse: read_moov }, + RootChunkHandler { ctype: mktag!(b"moof"), parse: read_moof }, + RootChunkHandler { ctype: mktag!(b"sidx"), parse: read_sidx }, ]; +fn print_cname(ctype: u32, size: u64, off: u64, depth: u8) { + for _ in 0..depth { print!(" "); } + let tag = [(ctype >> 24) as u8, (ctype >> 16) as u8, (ctype >> 8) as u8, ctype as u8]; + let mut printable = true; + for &ch in tag.iter() { + if ch < 0x20 || ch > 0x7F { + printable = false; + break; + } + } + if printable { + print!(" '{}{}{}{}'", tag[0] as char, tag[1] as char, tag[2] as char, tag[3] as char); + } else { + print!(" {:08X}", ctype); + } + println!(" size {} @ {:X}", size, off); +} + macro_rules! read_chunk_list { (root; $name: expr, $fname: ident, $handlers: ident) => { fn $fname(&mut self, strmgr: &mut StreamManager, size: u64) -> DemuxerResult<()> { @@ -90,6 +110,9 @@ macro_rules! read_chunk_list { let ret = read_chunk_header(&mut self.src); if ret.is_err() { break; } let (ctype, size) = ret.unwrap(); + if self.print_chunks { + print_cname(ctype, size, self.src.tell(), self.depth as u8); + } if self.src.tell() + size > list_end { break; } @@ -122,6 +145,9 @@ macro_rules! read_chunk_list { let ret = read_chunk_header(br); if ret.is_err() { break; } let (ctype, size) = ret.unwrap(); + if self.print_chunks { + print_cname(ctype, size, br.tell(), self.depth + 1); + } if br.tell() + size > list_end { break; } @@ -163,6 +189,10 @@ fn read_mdat(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> De Ok(size) } +fn read_sidx(_dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, _size: u64) -> DemuxerResult { + Ok(0) +} + fn read_moov(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult { dmx.read_moov(strmgr, size)?; Ok(size) @@ -174,6 +204,8 @@ const MOOV_CHUNK_HANDLERS: &[RootChunkHandler] = &[ RootChunkHandler { ctype: mktag!(b"ctab"), parse: read_ctab }, RootChunkHandler { ctype: mktag!(b"trak"), parse: read_trak }, RootChunkHandler { ctype: mktag!(b"meta"), parse: read_meta }, + RootChunkHandler { ctype: mktag!(b"mvex"), parse: read_mvex }, + RootChunkHandler { ctype: mktag!(b"iods"), parse: skip_chunk_mov }, ]; fn read_mvhd(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult { @@ -234,6 +266,7 @@ fn read_cmov(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> Dem let (ctype, csize) = read_chunk_header(&mut br)?; validate!(ctype == mktag!(b"moov")); let mut ddmx = MOVDemuxer::new(&mut br); + ddmx.print_chunks = dmx.print_chunks; ddmx.read_moov(strmgr, csize)?; std::mem::swap(&mut dmx.tracks, &mut ddmx.tracks); dmx.duration = ddmx.duration; @@ -255,22 +288,70 @@ fn read_meta(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> De Ok(size) } +fn read_mvex(_dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, _size: u64) -> DemuxerResult { + Ok(0) +} + +fn skip_chunk_mov(_dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, _size: u64) -> DemuxerResult { + Ok(0) +} + fn read_trak(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult { let mut track = Track::new(dmx.cur_track as u32, dmx.tb_den); + track.print_chunks = dmx.print_chunks; 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) } +fn read_moof(dmx: &mut MOVDemuxer, strmgr: &mut StreamManager, size: u64) -> DemuxerResult { + dmx.moof_off = dmx.src.tell() - 8; + dmx.read_moof(strmgr, size)?; + Ok(size) +} + +const MOOF_CHUNK_HANDLERS: &[RootChunkHandler] = &[ + RootChunkHandler { ctype: mktag!(b"mfhd"), parse: read_mfhd }, + RootChunkHandler { ctype: mktag!(b"traf"), parse: read_traf }, + RootChunkHandler { ctype: mktag!(b"meta"), parse: read_meta }, +]; + +fn read_mfhd(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult { + const KNOWN_MFHD_SIZE: u64 = 8; + validate!(size >= KNOWN_MFHD_SIZE); + let version = dmx.src.read_byte()?; + validate!(version == 0); + let flags = dmx.src.read_u24be()?; + validate!(flags == 0); + let _seq_no = dmx.src.read_u32be()?; + + Ok(KNOWN_MFHD_SIZE) +} + +fn read_traf(dmx: &mut MOVDemuxer, _strmgr: &mut StreamManager, size: u64) -> DemuxerResult { + let mut buf = [0u8; 16]; + dmx.src.peek_buf(&mut buf)?; + validate!(&buf[4..8] == b"tfhd"); + let track_id = read_u32be(&buf[12..16])?; + let mut track = None; + for trk in dmx.tracks.iter_mut() { + if trk.track_id == track_id { + track = Some(trk); + break; + } + } + if let Some(track) = track { + track.moof_off = dmx.moof_off; + track.read_traf(&mut dmx.src, size)?; + Ok(size) + } else { + Ok(0) + } +} + const TRAK_CHUNK_HANDLERS: &[TrackChunkHandler] = &[ TrackChunkHandler { ctype: mktag!(b"clip"), parse: skip_chunk }, TrackChunkHandler { ctype: mktag!(b"matt"), parse: skip_chunk }, @@ -317,11 +398,29 @@ fn read_mdia(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult } const MDIA_CHUNK_HANDLERS: &[TrackChunkHandler] = &[ - TrackChunkHandler { ctype: mktag!(b"mdhd"), parse: skip_chunk }, + TrackChunkHandler { ctype: mktag!(b"mdhd"), parse: read_mdhd }, TrackChunkHandler { ctype: mktag!(b"hdlr"), parse: read_hdlr }, TrackChunkHandler { ctype: mktag!(b"minf"), parse: read_minf }, ]; +fn read_mdhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult { + const KNOWN_MDHD_SIZE: u64 = 24; + validate!(size >= KNOWN_MDHD_SIZE); + let version = br.read_byte()?; + validate!(version == 0); + let flags = br.read_u24be()?; + validate!(flags == 0); + let _ctime = br.read_u32be()?; + let _mtime = br.read_u32be()?; + track.tb_den = br.read_u32be()?; + validate!(track.tb_den != 0); + track.duration = br.read_u32be()?; + let _language = br.read_u16be()?; + let _quality = br.read_u16be()?; + + Ok(KNOWN_MDHD_SIZE) +} + fn read_hdlr(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult { const KNOWN_HDLR_SIZE: u64 = 24; validate!(size >= KNOWN_HDLR_SIZE); @@ -335,7 +434,7 @@ fn read_hdlr(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult let _comp_flags = br.read_u32be()?; let _comp_flags_mask = br.read_u32be()?; - if comp_type == mktag!(b"mhlr") { + if comp_type == mktag!(b"mhlr") || comp_type == 0 { if comp_subtype == mktag!(b"vide") { track.stream_type = StreamType::Video; } else if comp_subtype == mktag!(b"soun") { @@ -418,12 +517,13 @@ fn read_stbl(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult 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"stts"), parse: read_stts }, 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 }, + TrackChunkHandler { ctype: mktag!(b"ctts"), parse: read_ctts }, ]; fn parse_audio_edata(br: &mut ByteReader, start_pos: u64, size: u64) -> DemuxerResult>> { @@ -560,8 +660,21 @@ fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult let format = if depth > 8 { RGB24_FORMAT } else { PAL8_FORMAT }; let mut vhdr = NAVideoInfo::new(width, height, false, format); vhdr.bits = depth as u8; + //skip various common atoms + while br.tell() - start_pos + 4 < size { + let mut buf = [0u8; 8]; + br.peek_buf(&mut buf)?; + let tsize = read_u32be(&buf).unwrap() as usize; + let tag = &buf[4..8]; + validate!(tsize >= 8); + match tag { + b"pasp" | b"clap" => { + br.read_skip(tsize)?; + }, + _ => break, + }; + } let edata = if br.tell() - start_pos + 4 < size { -//todo skip various common atoms let edata_size = br.read_u32be()? as usize; validate!(edata_size >= 4); let mut buf = vec![0; edata_size - 4]; @@ -584,7 +697,7 @@ fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult let packet_size = br.read_u16be()? as usize; validate!(packet_size == 0); let sample_rate = br.read_u32be()?; - validate!(sample_rate > 0); + validate!(sample_rate > (1 << 16)); 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]))) { @@ -592,8 +705,10 @@ fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult } else { "unknown" }; -//todo adjust format for various PCM kinds - let soniton = NASoniton::new(sample_size as u8, SONITON_FLAG_SIGNED | SONITON_FLAG_BE); + let mut soniton = NASoniton::new(sample_size as u8, SONITON_FLAG_SIGNED | SONITON_FLAG_BE); + if &fcc == b"raw " && sample_size == 8 { + soniton.signed = false; + } let block_align = 1; if sver == 1 { let samples_per_packet = br.read_u32be()?; @@ -602,9 +717,19 @@ fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult let _bytes_per_sample = br.read_u32be()?; track.bsize = bytes_per_frame as usize; track.frame_samples = samples_per_packet as usize; + track.tb_num = samples_per_packet; } else { - track.bsize = sample_size as usize; + track.bsize = (sample_size / 8) as usize; } + track.tb_den = sample_rate >> 16; + track.raw_audio = match &fcc { + b"NONE" | b"raw " | b"twos" | b"sowt" | + b"in24" | b"in32" | b"fl32" | b"fl64" | + b"ima4" | b"ms\x00\x02" | b"ms\x00\x21" | + b"alaw" | b"ulaw" | + b"MAC3" | b"MAC6" => true, + _ => false, + }; let ahdr = NAAudioInfo::new(sample_rate >> 16, nchannels as u8, soniton, block_align); let edata = parse_audio_edata(br, start_pos, size)?; codec_info = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata); @@ -622,11 +747,39 @@ fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult }; 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, u64::from(track.duration))); + track.stream = Some(NAStream::new(track.stream_type, track.track_no, codec_info, track.tb_num, track.tb_den, u64::from(track.duration))); track.stsd_found = true; Ok(read_size) } +fn read_stts(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult { + validate!(size >= 8); + let start_pos = br.tell(); + let version = br.read_byte()?; + validate!(version == 0); + let _flags = br.read_u24be()?; + let entries = br.read_u32be()? as usize; + validate!(entries as u64 <= (size - 8) / 8); + if entries == 0 { + } else if entries == 1 { + let _count = br.read_u32be()?; + let tb_num = br.read_u32be()?; + validate!(tb_num != 0); + track.rescale(tb_num); + } else { + track.time_to_sample.truncate(0); + track.time_to_sample.reserve(entries); + for _ in 0..entries { + let count = br.read_u32be()?; + let mult = br.read_u32be()?; + track.time_to_sample.push((count, mult)); + } + } + let read_size = br.tell() - start_pos; + validate!(read_size <= size); + Ok(read_size) +} + fn read_stss(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult { let version = br.read_byte()?; validate!(version == 0); @@ -702,6 +855,161 @@ fn read_stco(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult Ok(size) } +fn read_ctts(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult { + validate!(size >= 8); + let version = br.read_byte()?; + let _flags = br.read_u24be()?; + if version > 1 { + return Err(DemuxerError::NotImplemented); + } + let entries = br.read_u32be()? as usize; + track.ctts_version = version; + track.ctts_map.resize(entries); + match version { + 0 | 1 => { + validate!(size == (entries as u64) * 8 + 8); + for _ in 0..entries { + let samp_count = br.read_u32be()?; + let samp_offset = br.read_u32be()?; + track.ctts_map.add(samp_count, samp_offset / track.tb_div); + } + }, + _ => unreachable!(), + }; + track.ctts_map.reset(); + + Ok(size) +} + +const TRAF_CHUNK_HANDLERS: &[TrackChunkHandler] = &[ + TrackChunkHandler { ctype: mktag!(b"tfhd"), parse: read_tfhd }, + TrackChunkHandler { ctype: mktag!(b"trun"), parse: read_trun }, + TrackChunkHandler { ctype: mktag!(b"sbgp"), parse: skip_chunk }, + TrackChunkHandler { ctype: mktag!(b"sgpd"), parse: skip_chunk }, + TrackChunkHandler { ctype: mktag!(b"subs"), parse: skip_chunk }, + TrackChunkHandler { ctype: mktag!(b"saiz"), parse: skip_chunk }, + TrackChunkHandler { ctype: mktag!(b"saio"), parse: skip_chunk }, + TrackChunkHandler { ctype: mktag!(b"tfdt"), parse: skip_chunk }, + TrackChunkHandler { ctype: mktag!(b"meta"), parse: skip_chunk }, +]; + +fn read_tfhd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult { + validate!(size >= 8); + let start = br.tell(); + let _version = br.read_byte()?; + let flags = br.read_u24be()?; + let _track_id = br.read_u32be()?; + if (flags & 0x000001) != 0 { + let base_offset = br.read_u64be()?; + track.moof_off = base_offset; + } + if (flags & 0x000002) != 0 { + let _sample_description_index = br.read_u32be()?; + } + if (flags & 0x000008) != 0 { + let default_sample_duration = br.read_u32be()?; + if track.tb_div == 1 { + track.rescale(default_sample_duration); + } + } + if (flags & 0x000010) != 0 { + let _default_sample_size = br.read_u32be()?; + } + if (flags & 0x000020) != 0 { + let _default_sample_flags = br.read_u32be()?; + } + if (flags & 0x010000) != 0 { + } + /*if (flags & 0x020000) != 0 { // base offset is moof start + }*/ + Ok(br.tell() - start) +} + +fn read_trun(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult { + validate!(size >= 8); + let version = br.read_byte()?; + let flags = br.read_u24be()?; + let data_off_present = (flags & 0x000001) != 0; + let first_sample_flags = (flags & 0x000004) != 0; + let sample_duration_present = (flags & 0x000100) != 0; + let sample_size_present = (flags & 0x000200) != 0; + let sample_flags_present = (flags & 0x000400) != 0; + let sample_ct_off_present = (flags & 0x000800) != 0; + + let sample_count = br.read_u32be()? as usize; + + let mut hdr_size = 8; + let mut arr_size = 0; + if data_off_present { + hdr_size += 4; + } + if first_sample_flags { + hdr_size += 4; + } + if sample_duration_present { + arr_size += 4; + } + if sample_size_present { + arr_size += 4; + } + if sample_flags_present { + arr_size += 4; + } + if sample_ct_off_present { + arr_size += 4; + } + validate!(size == hdr_size + arr_size * (sample_count as u64)); + + let mut data_off = if data_off_present { + let off = br.read_u32be()? as i32; + let new_off = (track.moof_off as i64) + i64::from(off); + validate!(new_off > 0); + new_off as u64 + } else { + track.moof_off + }; + if first_sample_flags { + let _flags = br.read_u32be()?; + } + + if sample_size_present { + track.chunk_sizes.reserve(sample_count); + track.chunk_offsets.reserve(sample_count); + } + + if sample_ct_off_present { + if track.ctts_version != version { + track.ctts_version = version; + } + track.ctts_map.reserve(sample_count); + } + + for _ in 0..sample_count { + if sample_duration_present { + let _duration = br.read_u32be()?; + } + if sample_size_present { + let ssize = br.read_u32be()?; + track.chunk_sizes.push(ssize); + track.chunk_offsets.push(data_off); + data_off += u64::from(ssize); + } + if sample_flags_present { + let _flags = br.read_u32be()?; + } + if sample_ct_off_present { + let samp_offset = br.read_u32be()?; + if version == 0 { + track.ctts_map.add(1, samp_offset / track.tb_div); + } else { + track.ctts_map.add(1, ((samp_offset as i32) / (track.tb_div as i32)) as u32); + } + } + } + + Ok(size) +} + struct MOVDemuxer<'a> { src: &'a mut ByteReader<'a>, depth: usize, @@ -712,13 +1020,21 @@ struct MOVDemuxer<'a> { tb_den: u32, duration: u32, pal: Option>, + + moof_off: u64, + + print_chunks: bool, } struct Track { track_id: u32, track_str_id: usize, track_no: u32, + tb_num: u32, tb_den: u32, + tb_div: u32, + raw_audio: bool, + raw_apos: u64, duration: u32, depth: u8, tkhd_found: bool, @@ -733,15 +1049,122 @@ struct Track { keyframes: Vec, chunk_sizes: Vec, chunk_offsets: Vec, + time_to_sample: Vec<(u32, u32)>, sample_map: Vec<(u32, u32)>, sample_size: u32, frame_samples: usize, + ctts_map: RLESearcher, + ctts_version: u8, stream: Option, cur_chunk: usize, cur_sample: usize, + cur_ts: Option, samples_left: usize, last_offset: u64, pal: Option>, + timesearch: TimeSearcher, + + moof_off: u64, + + print_chunks: bool, +} + +#[derive(Default)] +struct TimeSearcher { + idx: usize, + base: u64, + sbase: u32, + cur_len: u32, + cur_mul: u32, +} + +impl TimeSearcher { + fn new() -> Self { Self::default() } + fn reset(&mut self) { + *self = Self::default(); + } + fn map_time(&mut self, sample: u32, tts: &[(u32, u32)]) -> u64 { + if tts.is_empty() { + u64::from(sample) + } else if sample >= self.sbase { + let mut sample = sample - self.sbase; + if self.idx == 0 { + let (cur_len, cur_mul) = tts[0]; + self.cur_len = cur_len; + self.cur_mul = cur_mul; + self.idx += 1; + } + while self.idx < tts.len() && sample > self.cur_len { + sample -= self.cur_len; + self.sbase += self.cur_len; + self.base += u64::from(self.cur_len) * u64::from(self.cur_mul); + self.cur_len = tts[self.idx].0; + self.cur_mul = tts[self.idx].1; + self.idx += 1; + } + self.base + u64::from(sample) * u64::from(self.cur_mul) + } else { + self.reset(); + self.map_time(sample, tts) + } + } +} + +#[derive(Default)] +struct RLESearcher { + array: Vec<(u32, T)>, + idx: usize, + start: u64, + next: u64, +} + +impl RLESearcher { + fn new() -> Self { Self::default() } + fn resize(&mut self, size: usize) { + self.array.truncate(0); + self.array.reserve(size); + } + fn reserve(&mut self, size: usize) { + self.array.reserve(size); + } + fn add(&mut self, len: u32, val: T) { + self.array.push((len, val)); + } + fn reset(&mut self) { + self.start = 0; + if !self.array.is_empty() { + self.idx = 0; + self.next = u64::from(self.array[0].0); + } else { + self.idx = self.array.len(); + self.next = 0; + } + } + fn map(&mut self, sample: u64) -> Option { + if sample < self.start { + self.reset(); + } + if self.idx < self.array.len() { + if sample < self.next { + Some(self.array[self.idx].1) + } else { + while (self.idx < self.array.len()) && (sample >= self.next) { + self.start = self.next; + self.idx += 1; + if self.idx < self.array.len() { + self.next += u64::from(self.array[self.idx].0); + } + } + if self.idx < self.array.len() { + Some(self.array[self.idx].1) + } else { + None + } + } + } else { + None + } + } } impl Track { @@ -752,7 +1175,11 @@ impl Track { track_id: 0, track_str_id: 0, track_no, + tb_num: 1, tb_den, + tb_div: 1, + raw_audio: false, + raw_apos: 0, duration: 0, stream_type: StreamType::None, width: 0, @@ -764,34 +1191,54 @@ impl Track { keyframes: Vec::new(), chunk_sizes: Vec::new(), chunk_offsets: Vec::new(), + time_to_sample: Vec::new(), sample_map: Vec::new(), sample_size: 0, frame_samples: 0, + ctts_map: RLESearcher::new(), + ctts_version: 0, stream: None, depth: 0, cur_chunk: 0, cur_sample: 0, + cur_ts: None, samples_left: 0, last_offset: 0, pal: None, + timesearch: TimeSearcher::new(), + + moof_off: 0, + + print_chunks: false, } } 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); + read_chunk_list!(track; "traf", read_traf, TRAF_CHUNK_HANDLERS); + fn rescale(&mut self, tb_num: u32) { + self.tb_div = tb_num; + if let Some(ref mut stream) = self.stream { + let tb_den = stream.tb_den; + let (tb_num, tb_den) = reduce_timebase(tb_num * stream.tb_num, tb_den); + stream.duration /= u64::from(self.tb_div); + stream.tb_num = tb_num; + stream.tb_den = tb_den; + self.tb_num = tb_num; + self.tb_den = tb_den; + self.duration /= self.tb_div; + } + } fn fill_seek_index(&self, seek_index: &mut SeekIndex) { if !self.keyframes.is_empty() { seek_index.mode = SeekIndexMode::Present; } + let mut tsearch = TimeSearcher::new(); 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 }); - } + let pts = tsearch.map_time(*kf_time - 1, &self.time_to_sample); + let time = NATimeInfo::ts_to_time(pts, 1000, self.tb_num, self.tb_den); + seek_index.add_entry(self.track_no as u32, SeekEntry { time, pts: u64::from(*kf_time - 1), pos: 0 }); } } fn calculate_chunk_size(&self, nsamp: usize) -> usize { @@ -827,8 +1274,22 @@ impl Track { } } 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 + let pts_val = self.timesearch.map_time(self.cur_sample as u32, &self.time_to_sample); + let dts = if let Some(dts_corr) = self.ctts_map.map(self.cur_sample as u64) { + let dts = match self.ctts_version { + 0 => pts_val.wrapping_add(u64::from(dts_corr)), + 1 => pts_val.wrapping_add(i64::from(dts_corr as i32) as u64), + _ => unimplemented!(), + }; + if (dts as i64) < 0 { + None + } else { + Some(dts) + } + } else { + None + }; + let mut pts = NATimeInfo::new(Some(pts_val), dts, None, self.tb_num, self.tb_den); if self.chunk_offsets.len() == self.chunk_sizes.len() { // simple one-to-one mapping if self.cur_sample >= self.chunk_sizes.len() { return None; @@ -859,14 +1320,34 @@ impl Track { self.samples_left -= 1; } else if self.frame_samples != 0 && self.bsize != 0 { let nblocks = size / self.bsize; + if self.raw_audio { + pts.pts = Some(self.raw_apos); + pts.duration = Some(nblocks as u64); + self.raw_apos += nblocks as u64; + } if nblocks > 0 { let consumed = (nblocks * self.frame_samples).min(self.samples_left); self.samples_left -= consumed; } else { self.samples_left = 0; } + } else if !self.raw_audio { + self.samples_left -= 1; } else { - self.samples_left = 0; + const BLOCK_SAMPLES: usize = 1024 * 6; // should be multiple of 64 and 6 to fit both IMA ADPCM and MACE 6:1 blocks + let max_size = self.calculate_chunk_size(BLOCK_SAMPLES); + let cur_size = self.calculate_chunk_size(self.samples_left); + let add_off = (size - cur_size) as u64; + let dsize = cur_size.min(max_size); + if self.samples_left >= BLOCK_SAMPLES { + self.cur_sample += BLOCK_SAMPLES; + self.samples_left -= BLOCK_SAMPLES; + self.last_offset -= size as u64; + } else { + self.cur_sample += self.samples_left; + self.samples_left = 0; + } + return Some((pts, offset + add_off, dsize)); } self.cur_sample += 1; Some((pts, offset, size)) @@ -889,11 +1370,112 @@ impl Track { self.bsize } } - fn seek(&mut self, pts: u64) { + #[allow(clippy::collapsible_if)] + fn seek(&mut self, pts: u64, tpoint: NATimePoint) -> DemuxerResult<()> { self.cur_sample = pts as usize; self.samples_left = 0; + self.cur_ts = None; if self.stream_type == StreamType::Audio { - self.cur_chunk = self.cur_sample; + if let NATimePoint::Milliseconds(ms) = tpoint { + let exp_pts = NATimeInfo::time_to_ts(ms, 1000, self.tb_num, self.tb_den); + if self.raw_audio { + if self.frame_samples != 0 { + self.raw_apos = exp_pts / (self.frame_samples as u64); + let mut apos = 0; + self.cur_sample = 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 + 1 == 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; + } + } + self.raw_apos = apos; + apos += (cur_samps / self.frame_samples) as u64; + if apos > exp_pts { + if cur_samps == self.frame_samples || apos > exp_pts + 1 { + if self.cur_chunk >= self.chunk_offsets.len() { + return Err(DemuxerError::SeekError); + } + self.last_offset = self.chunk_offsets[self.cur_chunk]; + break; + } + } + self.cur_chunk += 1; + } + self.samples_left = cur_samps; + self.cur_chunk += 1; + } else { + self.raw_apos = exp_pts; + self.cur_sample = exp_pts as usize; + 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 + 1 == 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 { + if self.cur_chunk >= self.chunk_offsets.len() { + return Err(DemuxerError::SeekError); + } + self.last_offset = self.chunk_offsets[self.cur_chunk]; + break; + } + self.cur_chunk += 1; + } + self.samples_left = csamp - self.cur_sample; + self.cur_chunk += 1; + } + } else if self.chunk_offsets.len() == self.chunk_sizes.len() { + self.cur_chunk = self.cur_sample; + } else { + 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 + 1 == 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 { + if self.cur_chunk >= self.chunk_offsets.len() { + return Err(DemuxerError::SeekError); + } + self.last_offset = self.chunk_offsets[self.cur_chunk]; + break; + } + self.cur_chunk += 1; + } + self.cur_sample = csamp - cur_samps; + self.samples_left = cur_samps; + self.last_offset = self.chunk_offsets[self.cur_chunk]; + self.cur_chunk += 1; + } + } else { + self.cur_chunk = self.cur_sample; + } } else if self.chunk_offsets.len() != self.chunk_sizes.len() && !self.sample_map.is_empty() { let mut csamp = 0; self.cur_chunk = 0; @@ -901,7 +1483,7 @@ impl Track { let mut cur_samps = 0; let (mut next_idx, mut next_samples) = cmap.next().unwrap(); loop { - if self.cur_chunk == next_idx as usize { + if self.cur_chunk + 1 == next_idx as usize { self.samples_left = cur_samps; cur_samps = next_samples as usize; if let Some((new_idx, new_samples)) = cmap.next() { @@ -911,18 +1493,42 @@ impl Track { } csamp += cur_samps; if csamp >= self.cur_sample { + if self.cur_chunk >= self.chunk_offsets.len() { + return Err(DemuxerError::SeekError); + } 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 { + for sample_no in csamp..self.cur_sample { self.last_offset += self.get_size(sample_no) as u64; } - self.samples_left = self.cur_sample - csamp - cur_samps; + self.samples_left = csamp + cur_samps - self.cur_sample; + self.cur_chunk += 1; } + Ok(()) + } +} + +fn process_packet(src: &mut ByteReader, strmgr: &StreamManager, track: &mut Track, pts: NATimeInfo, offset: u64, size: usize, first: bool) -> DemuxerResult { + if let Some(cpts) = pts.get_pts() { + let ts = NATimeInfo::ts_to_time(cpts, 1000, pts.tb_num, pts.tb_den); + track.cur_ts = Some(ts); + } else { + track.cur_ts = None; + } + let str = strmgr.get_stream(track.track_str_id); + if str.is_none() { return Err(DemuxerError::InvalidData); } + let stream = str.unwrap(); + src.seek(SeekFrom::Start(offset))?; + let mut pkt = src.read_packet(stream, pts, false, size)?; + if let Some(ref pal) = track.pal { + let side_data = NASideData::Palette(first, pal.clone()); + pkt.add_side_data(side_data); } + Ok(pkt) } impl<'a> DemuxCore<'a> for MOVDemuxer<'a> { @@ -930,6 +1536,14 @@ impl<'a> DemuxCore<'a> for MOVDemuxer<'a> { self.read_root(strmgr)?; validate!(self.mdat_pos > 0); validate!(!self.tracks.is_empty()); + for track in self.tracks.iter_mut() { + 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; + } + } for track in self.tracks.iter() { track.fill_seek_index(seek_index); } @@ -942,6 +1556,30 @@ impl<'a> DemuxCore<'a> for MOVDemuxer<'a> { if self.tracks.is_empty() { return Err(DemuxerError::EOF); } + let mut has_all_time = true; + let mut min_ts = std::u64::MAX; + for trk in self.tracks.iter() { + if let Some(ts) = trk.cur_ts { + min_ts = min_ts.min(ts); + } else { + has_all_time = false; + break; + } + } + if has_all_time { + for (trk_no, track) in self.tracks.iter_mut().enumerate() { + if let Some(ts) = track.cur_ts { + if ts == min_ts { + let first = track.cur_sample == 0; + if let Some((pts, offset, size)) = track.get_next_chunk() { + self.cur_track = trk_no + 1; + return process_packet(&mut self.src, strmgr, track, pts, offset, size, first); + } + } + } + } + } + for _ in 0..self.tracks.len() { if self.cur_track >= self.tracks.len() { self.cur_track = 0; @@ -950,16 +1588,7 @@ impl<'a> DemuxCore<'a> for MOVDemuxer<'a> { self.cur_track += 1; let first = track.cur_sample == 0; 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 mut pkt = self.src.read_packet(stream, pts, false, size)?; - if let Some(ref pal) = track.pal { - let side_data = NASideData::Palette(first, pal.clone()); - pkt.add_side_data(side_data); - } - return Ok(pkt); + return process_packet(&mut self.src, strmgr, track, pts, offset, size, first); } } Err(DemuxerError::EOF) @@ -968,11 +1597,33 @@ impl<'a> DemuxCore<'a> for MOVDemuxer<'a> { fn seek(&mut self, time: NATimePoint, seek_index: &SeekIndex) -> DemuxerResult<()> { let ret = seek_index.find_pos(time); if ret.is_none() { + if let NATimePoint::Milliseconds(_) = time { + let mut aonly = true; + for track in self.tracks.iter() { + if track.stream_type != StreamType::Audio || !track.raw_audio { + aonly = false; + break; + } + } + if aonly { + for track in self.tracks.iter_mut() { + track.seek(0, time)?; + } + return Ok(()); + } + } return Err(DemuxerError::SeekError); } let seek_info = ret.unwrap(); + let tbn = self.tracks[seek_info.str_id as usize].tb_num; + let tbd = self.tracks[seek_info.str_id as usize].tb_den; for track in self.tracks.iter_mut() { - track.seek(seek_info.pts); + let cur_pts = if track.track_id == seek_info.str_id { + seek_info.pts + } else { + seek_info.pts * u64::from(tbn) * u64::from(track.tb_den) / (u64::from(tbd) * u64::from(track.tb_num)) + }; + track.seek(cur_pts, time)?; } Ok(()) } @@ -985,10 +1636,38 @@ impl<'a> DemuxCore<'a> for MOVDemuxer<'a> { } } +const PRINT_CHUNKS: &str = "print_chunks"; + +const DEMUXER_OPTIONS: &[NAOptionDefinition] = &[ + NAOptionDefinition { + name: PRINT_CHUNKS, + description: "Print parsed file structure", + opt_type: NAOptionDefinitionType::Bool }, +]; + impl<'a> NAOptionHandler for MOVDemuxer<'a> { - fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } - fn set_options(&mut self, _options: &[NAOption]) { } - fn query_option_value(&self, _name: &str) -> Option { None } + fn get_supported_options(&self) -> &[NAOptionDefinition] { DEMUXER_OPTIONS } + #[allow(clippy::single_match)] + fn set_options(&mut self, options: &[NAOption]) { + for option in options.iter() { + for opt_def in DEMUXER_OPTIONS.iter() { + if opt_def.check(option).is_ok() { + match (option.name, &option.value) { + (PRINT_CHUNKS, NAValue::Bool(val)) => { + self.print_chunks = *val; + }, + _ => {}, + } + } + } + } + } + fn query_option_value(&self, name: &str) -> Option { + match name { + PRINT_CHUNKS => Some(NAValue::Bool(self.print_chunks)), + _ => None, + } + } } impl<'a> MOVDemuxer<'a> { @@ -1003,6 +1682,10 @@ impl<'a> MOVDemuxer<'a> { tb_den: 0, duration: 0, pal: None, + + moof_off: 0, + + print_chunks: false, } } fn read_root(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> { @@ -1011,6 +1694,9 @@ impl<'a> MOVDemuxer<'a> { let ret = read_chunk_header(&mut self.src); if ret.is_err() { break; } let (ctype, size) = ret.unwrap(); + if self.print_chunks { + print_cname(ctype, size, self.src.tell(), 0); + } if IGNORED_CHUNKS.contains(&ctype) { self.src.skip64(size)?; continue; @@ -1030,6 +1716,7 @@ impl<'a> MOVDemuxer<'a> { Ok(()) } read_chunk_list!(root; "moov", read_moov, MOOV_CHUNK_HANDLERS); + read_chunk_list!(root; "moof", read_moof, MOOF_CHUNK_HANDLERS); } pub struct MOVDemuxerCreator { } @@ -1349,4 +2036,25 @@ mod test { println!("Got {}", pkt); } } + + #[test] + fn test_dash_demux() { + let mut file = File::open("assets/ITU/dash.m4a").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); + } + } }