X-Git-Url: https://git.nihav.org/?a=blobdiff_plain;f=nihav-commonfmt%2Fsrc%2Fdemuxers%2Favi.rs;h=7c1d4f7b5a2ee0e4388be374ad84d42f51499254;hb=5c390af2d5f975c2dbfb5d98b0fd472c0b9bc563;hp=ec326ff9d2f3fe06f1452e757b7b09cb90453936;hpb=b33d38e0cb9907f59e2f354ac7a2ff015e5e978c;p=nihav.git diff --git a/nihav-commonfmt/src/demuxers/avi.rs b/nihav-commonfmt/src/demuxers/avi.rs index ec326ff..7c1d4f7 100644 --- a/nihav-commonfmt/src/demuxers/avi.rs +++ b/nihav-commonfmt/src/demuxers/avi.rs @@ -1,6 +1,7 @@ use nihav_core::demuxers::*; -use nihav_core::register; +use nihav_registry::register; use nihav_core::demuxers::DemuxerError::*; +use std::str::FromStr; macro_rules! mktag { ($a:expr, $b:expr, $c:expr, $d:expr) => ({ @@ -34,6 +35,29 @@ impl StreamState { } } +struct PalInfo { + pal: Arc<[u8; 1024]>, + changed: bool, + stream_no: usize, +} + +#[derive(Clone,Copy,Default)] +struct RIFFSegment { + pos: u64, + size: usize, + movi_pos: u64, + movi_size: usize, +} + +impl RIFFSegment { + fn contains(&self, pos: u64) -> bool { + pos >= self.movi_pos && pos < self.movi_pos + (self.movi_size as u64) + } + fn get_end(&self) -> u64 { + self.pos + (self.size as u64) + } +} + #[allow(dead_code)] struct AVIDemuxer<'a> { src: &'a mut ByteReader<'a>, @@ -46,6 +70,12 @@ struct AVIDemuxer<'a> { sstate: StreamState, tb_num: u32, tb_den: u32, + strm_duration: u32, + key_offs: Vec, + pal: Vec, + odml: bool, + odml_idx: Vec, + odml_riff: Vec, } #[derive(Debug,Clone,Copy,PartialEq)] @@ -66,46 +96,98 @@ impl<'a> DemuxCore<'a> for AVIDemuxer<'a> { } fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult { - if self.movi_size == 0 { return Err(EOF); } + if self.movi_size == 0 { + if !self.odml { + return Err(EOF); + } + self.try_next_odml_chunk()?; + } let mut tag: [u8; 4] = [0; 4]; loop { if (self.src.tell() & 1) == 1 { self.src.read_skip(1)?; self.movi_size -= 1; - if self.movi_size == 0 { return Err(EOF); } + if self.movi_size == 0 { + if !self.odml { + return Err(EOF); + } + self.try_next_odml_chunk()?; + } } + let is_keyframe = self.key_offs.binary_search(&self.src.tell()).is_ok(); self.src.read_buf(&mut tag)?; let size = self.src.read_u32le()? as usize; if mktag!(tag) == mktag!(b"JUNK") { self.movi_size -= size + 8; self.src.read_skip(size)?; - if self.movi_size == 0 { return Err(EOF); } + if self.movi_size == 0 { + if !self.odml { + return Err(EOF); + } + self.try_next_odml_chunk()?; + } continue; } if mktag!(tag) == mktag!(b"LIST") { self.movi_size -= 12; self.src.read_skip(4)?; - if self.movi_size == 0 { return Err(EOF); } + if self.movi_size == 0 { + if !self.odml { + return Err(EOF); + } + self.try_next_odml_chunk()?; + } continue; } - if tag[0] == b'i' && tag[1] == b'x' { - return Err(EOF); + if (tag[0] == b'i' && tag[1] == b'x') || (&tag == b"idx1") { + if !self.odml { + return Err(EOF); + } + self.src.read_skip(size)?; + self.try_next_odml_chunk()?; + continue; } if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' { return Err(InvalidData); } let stream_no = (tag[0] - b'0') * 10 + (tag[1] - b'0'); + if tag[2] == b'p' && tag[3] == b'c' { + self.parse_palette_change(stream_no as usize, size)?; + self.movi_size -= size; + if self.movi_size == 0 { + if !self.odml { + return Err(EOF); + } + self.try_next_odml_chunk()?; + } + continue; + } let str = strmgr.get_stream(stream_no as usize); if str.is_none() { return Err(InvalidData); } let stream = str.unwrap(); if size == 0 { self.movi_size -= 8; - if self.movi_size == 0 { return Err(EOF); } + if self.movi_size == 0 { + if !self.odml { + return Err(EOF); + } + self.try_next_odml_chunk()?; + } continue; } let (tb_num, tb_den) = stream.get_timebase(); - let ts = NATimeInfo::new(Some(self.cur_frame[stream_no as usize]), None, None, tb_num, tb_den); - let pkt = self.src.read_packet(stream, ts, false, size)?; + let mut ts = NATimeInfo::new(Some(self.cur_frame[stream_no as usize]), None, None, tb_num, tb_den); + if stream.get_media_type() == StreamType::Audio && tb_num == 1 && stream.get_info().get_name() == "pcm" { + ts.pts = None; + } + let mut pkt = self.src.read_packet(stream, ts, is_keyframe, size)?; + for pe in self.pal.iter_mut() { + if pe.stream_no == (stream_no as usize) { + pkt.add_side_data(NASideData::Palette(pe.changed, pe.pal.clone())); + pe.changed = false; + break; + } + } self.cur_frame[stream_no as usize] += 1; self.movi_size -= size + 8; @@ -113,13 +195,43 @@ impl<'a> DemuxCore<'a> for AVIDemuxer<'a> { } } - fn seek(&mut self, time: u64, seek_index: &SeekIndex) -> DemuxerResult<()> { + fn seek(&mut self, time: NATimePoint, seek_index: &SeekIndex) -> DemuxerResult<()> { let ret = seek_index.find_pos(time); if ret.is_none() { return Err(DemuxerError::SeekError); } let seek_info = ret.unwrap(); + if self.odml && ((seek_info.pos < self.movi_pos) || (seek_info.pos > self.movi_pos + (self.movi_orig as u64))) { + let mut found = false; + for riff_seg in self.odml_riff.iter() { + if riff_seg.contains(seek_info.pos) { + found = true; + self.movi_pos = riff_seg.movi_pos; + self.movi_orig = riff_seg.movi_size; + self.movi_size = riff_seg.movi_size; + break; + } + } + if !found { + let riff_seg = self.odml_riff.last().unwrap(); + self.src.seek(SeekFrom::Start(riff_seg.get_end()))?; + loop { + let ret = self.try_next_odml_chunk(); + if ret.is_err() { + return Err(DemuxerError::SeekError); + } + let riff_seg = self.odml_riff.last().unwrap(); + if riff_seg.contains(seek_info.pos) { + self.movi_pos = riff_seg.movi_pos; + self.movi_orig = riff_seg.movi_size; + self.movi_size = riff_seg.movi_size; + break; + } + self.src.seek(SeekFrom::Start(riff_seg.get_end()))?; + } + } + } if seek_info.pos < self.movi_pos { return Err(DemuxerError::SeekError); } let skip_size = (seek_info.pos - self.movi_pos) as usize; if skip_size > self.movi_size { return Err(DemuxerError::SeekError); } @@ -130,6 +242,13 @@ impl<'a> DemuxCore<'a> for AVIDemuxer<'a> { Ok(()) } + fn get_duration(&self) -> u64 { 0 } +} + +impl<'a> NAOptionHandler for AVIDemuxer<'a> { + fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } + fn set_options(&mut self, _options: &[NAOption]) { } + fn query_option_value(&self, _name: &str) -> Option { None } } impl<'a> AVIDemuxer<'a> { @@ -145,6 +264,12 @@ impl<'a> AVIDemuxer<'a> { sstate: StreamState::new(), tb_num: 0, tb_den: 0, + strm_duration: 0, + key_offs: Vec::new(), + pal: Vec::new(), + odml: false, + odml_idx: Vec::new(), + odml_riff: Vec::with_capacity(1), } } @@ -201,6 +326,7 @@ impl<'a> AVIDemuxer<'a> { fn read_header(&mut self, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex) -> DemuxerResult<()> { let riff_tag = self.src.read_u32be()?; let size = self.src.read_u32le()? as usize; + self.odml_riff.push(RIFFSegment { pos: self.src.tell() - 8, size: size + 8, movi_pos: 0, movi_size: 0}); let avi_tag = self.src.read_u32be()?; let mut matches = false; for rt in RIFF_TAGS.iter() { @@ -220,21 +346,55 @@ impl<'a> AVIDemuxer<'a> { self.movi_size = csz - 4; self.movi_orig = self.movi_size; self.movi_pos = self.src.tell(); + + self.odml_riff[0].movi_pos = self.movi_pos; + self.odml_riff[0].movi_size = self.movi_size; break; } rest_size -= csz; } if !seek_idx.skip_index { - self.src.read_skip(self.movi_size)?; - while rest_size > 0 { - let ret = self.parse_chunk(strmgr, RIFFTag::Chunk(mktag!(b"idx1")), rest_size,0); - if ret.is_err() { break; } - let (csz, end) = ret.unwrap(); - if end { - let _res = parse_idx1(&mut self.src, strmgr, seek_idx, csz, self.movi_pos); - break; + if !self.odml { + self.src.read_skip(self.movi_size)?; + while rest_size > 0 { + let ret = self.parse_chunk(strmgr, RIFFTag::Chunk(mktag!(b"idx1")), rest_size,0); + if ret.is_err() { break; } + let (csz, end) = ret.unwrap(); + if end { + let _res = parse_idx1(&mut self.src, strmgr, seek_idx, csz, self.movi_pos, &mut self.key_offs); + break; + } + rest_size -= csz; + } + } else { + let mut start = 0; + let mut last_strm_no = 255; + for &offset in self.odml_idx.iter() { + if self.src.seek(SeekFrom::Start(offset)).is_err() { + break; + } + let ret = self.src.read_tag(); + if ret.is_err() { break; } + let tag = ret.unwrap(); + let ret = self.src.read_u32le(); + if ret.is_err() { break; } + let size = ret.unwrap() as usize; + if &tag[..2] != b"ix" || tag[2] < b'0' || tag[2] > b'9' || tag[3] < b'0' || tag[3] > b'9'{ + break; + } + let stream_no = ((tag[2] - b'0') * 10 + (tag[3] - b'0')) as usize; + + if last_strm_no != stream_no { + start = 0; + last_strm_no = stream_no; + } + let ret = parse_odml_ix(&mut self.src, strmgr, seek_idx, stream_no, size, start); + if let Ok(new_start) = ret { + start = new_start; + } else { + break; + } } - rest_size -= csz; } } if self.movi_pos != 0 { @@ -254,6 +414,67 @@ impl<'a> AVIDemuxer<'a> { self.src.read_buf(&mut edvec)?; Ok(Some(edvec)) } + + fn parse_palette_change(&mut self, stream_no: usize, size: usize) -> DemuxerResult<()> { + for pe in self.pal.iter_mut() { + if pe.stream_no == stream_no { + let start_clr = self.src.read_byte()? as usize; + let len = self.src.read_byte()? as usize; + let _flags = self.src.read_u16le()?; + validate!(start_clr + len <= 256); + validate!(len * 4 + 4 == size); + let mut newpal = *pe.pal; + for i in start_clr..(start_clr + len) { + newpal[i * 4] = self.src.read_byte()?; + newpal[i * 4 + 1] = self.src.read_byte()?; + newpal[i * 4 + 2] = self.src.read_byte()?; + newpal[i * 4 + 3] = 0; + self.src.read_byte()?; // flags + } + pe.pal = Arc::new(newpal); + pe.changed = true; + return Ok(()); + } + } + self.src.read_skip(size)?; + Ok(()) + } + fn try_next_odml_chunk(&mut self) -> DemuxerResult<()> { + let last_seg = self.odml_riff.last().unwrap(); + if self.src.tell() < last_seg.get_end() { + for riff_seg in self.odml_riff.iter() { + if riff_seg.pos >= self.src.tell() { + self.src.seek(SeekFrom::Start(riff_seg.movi_pos))?; + self.movi_pos = riff_seg.movi_pos; + self.movi_size = riff_seg.movi_size; + return Ok(()); + } + } + } + self.src.seek(SeekFrom::Start(last_seg.get_end()))?; + + let riff_pos = self.src.tell(); + let ret = self.src.read_tag(); + if let Ok([b'R', b'I', b'F', b'F']) = ret { + } else { + return Err(DemuxerError::EOF); + } + let riff_size = self.src.read_u32le()? as usize; + let tag = self.src.read_tag()?; + validate!(&tag == b"AVIX"); + let tag = self.src.read_tag()?; + validate!(&tag == b"LIST"); + let list_size = self.src.read_u32le()? as usize; + validate!(list_size >= 4); + let tag = self.src.read_tag()?; + validate!(&tag == b"movi"); + self.odml_riff.push(RIFFSegment{ pos: riff_pos, size: riff_size + 8, movi_pos: riff_pos + 24, movi_size: list_size - 4}); + self.movi_pos = riff_pos + 24; + self.movi_size = list_size - 4; + self.movi_orig = self.movi_size; + + Ok(()) + } } const RIFF_TAGS: &[[u32; 2]] = &[ @@ -262,14 +483,16 @@ const RIFF_TAGS: &[[u32; 2]] = &[ [ mktag!(b"ON2 "), mktag!(b"ON2f") ], ]; -const CHUNKS: [RIFFParser; 7] = [ +const CHUNKS: &[RIFFParser] = &[ RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"hdrl")), parse: parse_hdrl }, RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"strl")), parse: parse_strl }, RIFFParser { tag: RIFFTag::Chunk(mktag!(b"avih")), parse: parse_avih }, RIFFParser { tag: RIFFTag::Chunk(mktag!(b"ON2h")), parse: parse_avih }, RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strf")), parse: parse_strf }, RIFFParser { tag: RIFFTag::Chunk(mktag!(b"strh")), parse: parse_strh }, + RIFFParser { tag: RIFFTag::Chunk(mktag!(b"indx")), parse: parse_indx }, RIFFParser { tag: RIFFTag::Chunk(mktag!(b"JUNK")), parse: parse_junk }, + RIFFParser { tag: RIFFTag::List(mktag!(b"LIST"), mktag!(b"odml")), parse: parse_odml }, ]; fn is_list_tag(tag: u32) -> bool { @@ -293,6 +516,11 @@ fn parse_strl(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> Ok(0) } +fn parse_odml(dmx: &mut AVIDemuxer, _strmgr: &mut StreamManager, _size: usize) -> DemuxerResult { + dmx.odml = true; + Ok(0) +} + #[allow(unused_variables)] fn parse_strh(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult { if size < 0x38 { return Err(InvalidData); } @@ -305,7 +533,7 @@ fn parse_strh(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> dmx.tb_num = dmx.src.read_u32le()?; //scale dmx.tb_den = dmx.src.read_u32le()?; //rate dmx.src.read_skip(4)?; //start - dmx.src.read_skip(4)?; //length + dmx.strm_duration = dmx.src.read_u32le()?; dmx.src.read_skip(4)?; //buf size dmx.src.read_skip(4)?; //quality dmx.src.read_skip(4)?; //sample size @@ -344,7 +572,7 @@ fn parse_strf(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult { if size < 40 { return Err(InvalidData); } let bi_size = dmx.src.read_u32le()?; - if (bi_size as usize) > size { return Err(InvalidData); } + if (bi_size as usize) < 40 { return Err(InvalidData); } let width = dmx.src.read_u32le()?; let height = dmx.src.read_u32le()? as i32; let planes = dmx.src.read_u16le()?; @@ -355,24 +583,89 @@ fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize let xdpi = dmx.src.read_u32le()?; let ydpi = dmx.src.read_u32le()?; let colors = dmx.src.read_u32le()?; + validate!(colors <= 256); let imp_colors = dmx.src.read_u32le()?; let flip = height < 0; let format = if bitcount > 8 { RGB24_FORMAT } else { PAL8_FORMAT }; - let vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, PAL8_FORMAT); + let mut vhdr = NAVideoInfo::new(width as usize, if flip { -height as usize } else { height as usize}, flip, format); + vhdr.bits = (planes as u8) * (bitcount as u8); + let cname = if find_raw_rgb_fmt(&compression, planes, bitcount, flip, &mut vhdr) { + "rawvideo-ms" + } else if find_raw_yuv_fmt(&compression, &mut vhdr) { + "rawvideo" + } else { + match register::find_codec_from_avi_fourcc(&compression) { + None => "unknown", + Some(name) => name, + } + }; let vci = NACodecTypeInfo::Video(vhdr); let edata = dmx.read_extradata(size - 40)?; - let cname = match register::find_codec_from_avi_fourcc(&compression) { - None => "unknown", - Some(name) => name, - }; + if colors > 0 { + if let Some(ref buf) = edata { + let mut pal = [0u8; 1024]; + for (dpal, spal) in pal.chunks_mut(4).take(colors as usize).zip(buf.chunks(4)) { + dpal[0] = spal[2]; + dpal[1] = spal[1]; + dpal[2] = spal[0]; + dpal[3] = 0; + } + let pal = PalInfo { pal: Arc::new(pal), changed: true, stream_no: strmgr.get_num_streams() }; + dmx.pal.push(pal); + } + } let vinfo = NACodecInfo::new(cname, vci, edata); - let res = strmgr.add_stream(NAStream::new(StreamType::Video, u32::from(dmx.sstate.strm_no), vinfo, dmx.tb_num, dmx.tb_den)); + let res = strmgr.add_stream(NAStream::new(StreamType::Video, u32::from(dmx.sstate.strm_no), vinfo, dmx.tb_num, dmx.tb_den, u64::from(dmx.strm_duration))); if res.is_none() { return Err(MemoryError); } dmx.sstate.reset(); Ok(size) } +fn find_raw_rgb_fmt(compr: &[u8; 4], planes: u16, bitcount: u16, flip: bool, vhdr: &mut NAVideoInfo) -> bool { + match compr { + &[0, 0, 0, 0] | b"DIB " => { + if planes != 1 { + return false; + } + let fmt_name = match bitcount { + 8 => "pal8", + 16 => "bgr555", + 24 => "bgr24", + 32 => "bgra24", + _ => return false, + }; + if let Ok(fmt) = NAPixelFormaton::from_str(fmt_name) { + vhdr.format = fmt; + vhdr.flipped = !flip; + true + } else { + false + } + }, + _ => false, + } +} + +fn find_raw_yuv_fmt(compr: &[u8; 4], vhdr: &mut NAVideoInfo) -> bool { + let (fmt_name, swapuv) = match compr { + b"UYVY" | b"UYNY" | b"UYNV" | b"2vuy" => ("uyvy", false), + b"I420" | b"IYUV" => ("yuv420p", false), + b"YV12" => ("yuv420p", true), + b"YVU9" => ("yuv410p", true), + _ => return false, + }; + if let Ok(fmt) = NAPixelFormaton::from_str(fmt_name) { + vhdr.format = fmt; + if swapuv { + vhdr.format.comp_info.swap(1, 2); + } + true + } else { + false + } +} + #[allow(unused_variables)] fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult { if size < 16 { return Err(InvalidData); } @@ -383,15 +676,22 @@ fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize let block_align = dmx.src.read_u16le()?; let bits_per_sample = dmx.src.read_u16le()?; - let soniton = NASoniton::new(bits_per_sample as u8, SONITON_FLAG_SIGNED); + let signed = bits_per_sample > 8; + let soniton = NASoniton::new(bits_per_sample as u8, if signed { SONITON_FLAG_SIGNED } else { 0 }); let ahdr = NAAudioInfo::new(samplespersec, channels as u8, soniton, block_align as usize); - let edata = dmx.read_extradata(size - 16)?; + let edata = if size > 16 { + let edata_size = dmx.src.read_u16le()? as usize; + validate!(edata_size + 18 <= size); + dmx.read_extradata(size - 18)? + } else { + None + }; let cname = match register::find_codec_from_wav_twocc(w_format_tag) { None => "unknown", Some(name) => name, }; let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata); - let res = strmgr.add_stream(NAStream::new(StreamType::Audio, u32::from(dmx.sstate.strm_no), ainfo, dmx.tb_num, dmx.tb_den)); + let res = strmgr.add_stream(NAStream::new(StreamType::Audio, u32::from(dmx.sstate.strm_no), ainfo, dmx.tb_num, dmx.tb_den, u64::from(dmx.strm_duration))); if res.is_none() { return Err(MemoryError); } dmx.sstate.reset(); Ok(size) @@ -400,7 +700,7 @@ fn parse_strf_auds(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize fn parse_strf_xxxx(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult { let edata = dmx.read_extradata(size)?; let info = NACodecInfo::new("unknown", NACodecTypeInfo::None, edata); - let res = strmgr.add_stream(NAStream::new(StreamType::Data, u32::from(dmx.sstate.strm_no), info, dmx.tb_num, dmx.tb_den)); + let res = strmgr.add_stream(NAStream::new(StreamType::Data, u32::from(dmx.sstate.strm_no), info, dmx.tb_num, dmx.tb_den, u64::from(dmx.strm_duration))); if res.is_none() { return Err(MemoryError); } dmx.sstate.reset(); Ok(size) @@ -429,23 +729,58 @@ fn parse_avih(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> Ok(size) } +fn parse_indx(dmx: &mut AVIDemuxer, _strmgr: &mut StreamManager, size: usize) -> DemuxerResult { + dmx.odml = true; + validate!(size >= 24); + let entry_size = dmx.src.read_u16le()? as usize; + if entry_size != 4 { + dmx.src.read_skip(size - 2)?; + return Ok(size); + } + let sub_type = dmx.src.read_byte()?; + let idx_type = dmx.src.read_byte()?; + validate!(sub_type == 0 && idx_type == 0); + let entries = dmx.src.read_u32le()? as usize; + validate!(size >= 24 + entries * 4 * entry_size); + dmx.src.read_tag()?; //chunk id + dmx.src.read_skip(12)?; // reserved + for _ in 0..entries { + let offset = dmx.src.read_u64le()?; + let _idx_len = dmx.src.read_u32le()?; + let _nframes = dmx.src.read_u32le()?; + dmx.odml_idx.push(offset); + } + dmx.src.read_skip(size - 24 - entries * 4 * entry_size)?; + Ok(size) +} + #[allow(unused_variables)] fn parse_junk(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult { dmx.src.read_skip(size)?; Ok(size) } -fn parse_idx1(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex, size: usize, movi_pos: u64) -> DemuxerResult { +#[allow(clippy::verbose_bit_mask)] +fn parse_idx1(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex, size: usize, movi_pos: u64, key_offs: &mut Vec) -> DemuxerResult { validate!((size & 15) == 0); let mut tag = [0u8; 4]; let num_entries = size >> 4; let mut counter = [0u64; 100]; + let mut add_offset = 0; + let mut set_offset = false; for _ in 0..num_entries { src.read_buf(&mut tag)?; let flags = src.read_u32le()?; - let offset = src.read_u32le()? as u64; + let mut offset = src.read_u32le()? as u64; let _length = src.read_u32le()?; + if !set_offset && offset < movi_pos { + add_offset = movi_pos - offset; + } + set_offset = true; + + offset += add_offset; + if tag[0] < b'0' || tag[0] > b'9' || tag[1] < b'0' || tag[1] > b'9' { return Err(InvalidData); } @@ -457,15 +792,55 @@ fn parse_idx1(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut S let (tb_num, tb_den) = str.get_timebase(); let pts = counter[stream_no]; let time = NATimeInfo::ts_to_time(pts, 1000, tb_num, tb_den); - seek_idx.add_entry(stream_no as u32, SeekEntry { time, pts, pos: offset + movi_pos - 4 }); + validate!(offset >= movi_pos); + seek_idx.add_entry(stream_no as u32, SeekEntry { time, pts, pos: offset }); } + key_offs.push(offset); } } counter[stream_no] += 1; } + key_offs.sort_unstable(); Ok(size) } +fn parse_odml_ix(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex, stream_no: usize, size: usize, start: u64) -> DemuxerResult { + validate!(size >= 24); + let entry_size = src.read_u16le()? as usize; + if entry_size != 2 { + return Err(DemuxerError::NotImplemented); + } + let sub_type = src.read_byte()?; + let idx_type = src.read_byte()?; + validate!(sub_type == 0 && idx_type == 1); + let entries = src.read_u32le()? as usize; + validate!(size == 24 + entries * 4 * entry_size); + src.read_tag()?; //chunk id + let base_offset = src.read_u64le()?; + src.read_u32le()?; //reserved + if let Some(stream) = strmgr.get_stream(stream_no) { + if stream.get_media_type() == StreamType::Video { + let (tb_num, tb_den) = stream.get_timebase(); + + for i in 0..entries { + let offset = src.read_u32le()?; + validate!(offset >= 8); + let _size = src.read_u32le()?; + + let pts = start + (i as u64); + let time = NATimeInfo::ts_to_time(pts, 1000, tb_num, tb_den); + seek_idx.add_entry(stream_no as u32, SeekEntry { time, pts, pos: base_offset + u64::from(offset - 8) }); + } + + Ok(start + (entries as u64)) + } else { + Ok(0) + } + } else { + Ok(0) + } +} + pub struct AVIDemuxerCreator { } impl DemuxerCreator for AVIDemuxerCreator {