use nihav_core::demuxers::*;
-use nihav_core::register;
+use nihav_registry::register;
use nihav_core::demuxers::DemuxerError::*;
macro_rules! mktag {
}
}
+struct PalInfo {
+ pal: Arc<[u8; 1024]>,
+ changed: bool,
+ stream_no: usize,
+}
+
#[allow(dead_code)]
struct AVIDemuxer<'a> {
src: &'a mut ByteReader<'a>,
num_streams: u8,
size: usize,
movi_size: usize,
+ movi_pos: u64,
+ movi_orig: usize,
sstate: StreamState,
tb_num: u32,
tb_den: u32,
+ key_offs: Vec<u64>,
+ pal: Vec<PalInfo>,
}
#[derive(Debug,Clone,Copy,PartialEq)]
}
impl<'a> DemuxCore<'a> for AVIDemuxer<'a> {
- #[allow(unused_variables)]
- fn open(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
- self.read_header(strmgr)?;
+ fn open(&mut self, strmgr: &mut StreamManager, seek_index: &mut SeekIndex) -> DemuxerResult<()> {
+ self.read_header(strmgr, seek_index)?;
Ok(())
}
self.movi_size -= 1;
if self.movi_size == 0 { return Err(EOF); }
}
+ 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") {
if self.movi_size == 0 { return Err(EOF); }
continue;
}
- if tag[0] == b'i' && tag[1] == b'x' {
+ if (tag[0] == b'i' && tag[1] == b'x') || (&tag == b"idx1") {
return Err(EOF);
}
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 { return Err(EOF); }
+ continue;
+ }
let str = strmgr.get_stream(stream_no as usize);
if str.is_none() { return Err(InvalidData); }
let stream = str.unwrap();
}
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 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;
}
}
- #[allow(unused_variables)]
- fn seek(&mut self, time: u64) -> DemuxerResult<()> {
- Err(NotImplemented)
+ 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();
+
+ 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); }
+ self.movi_size = self.movi_orig - skip_size;
+
+ self.cur_frame[seek_info.str_id as usize] = seek_info.pts;
+ self.src.seek(SeekFrom::Start(seek_info.pos))?;
+
+ Ok(())
}
}
+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<NAValue> { None }
+}
+
impl<'a> AVIDemuxer<'a> {
fn new(io: &'a mut ByteReader<'a>) -> Self {
AVIDemuxer {
src: io,
size: 0,
movi_size: 0,
+ movi_pos: 0,
+ movi_orig: 0,
sstate: StreamState::new(),
tb_num: 0,
tb_den: 0,
+ key_offs: Vec::new(),
+ pal: Vec::new(),
}
}
Ok((size + 8, false))
}
- fn read_header(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()> {
+ 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;
let avi_tag = self.src.read_u32be()?;
let mut rest_size = size;
loop {
let (csz, end) = self.parse_chunk(strmgr, RIFFTag::List(mktag!(b"LIST"), mktag!(b"movi")), rest_size,0)?;
- if end { self.movi_size = csz - 4; break; }
+ if end {
+ self.movi_size = csz - 4;
+ self.movi_orig = self.movi_size;
+ self.movi_pos = self.src.tell();
+ 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, &mut self.key_offs);
+ break;
+ }
+ rest_size -= csz;
+ }
+ }
+ if self.movi_pos != 0 {
+ self.src.seek(SeekFrom::Start(self.movi_pos))?;
+ } else {
+ return Err(InvalidData);
+ }
if !self.sstate.valid_state() || self.sstate.strm_no != self.num_streams {
return Err(InvalidData);
}
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(())
+ }
}
const RIFF_TAGS: &[[u32; 2]] = &[
fn parse_strf_vids(dmx: &mut AVIDemuxer, strmgr: &mut StreamManager, size: usize) -> DemuxerResult<usize> {
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()?;
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 vci = NACodecTypeInfo::Video(vhdr);
let edata = dmx.read_extradata(size - 40)?;
+ 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 cname = match register::find_codec_from_avi_fourcc(&compression) {
None => "unknown",
Some(name) => name,
let samplespersec = dmx.src.read_u32le()?;
let avgbytespersec = dmx.src.read_u32le()?;
let block_align = dmx.src.read_u16le()?;
- let bits_per_sample = dmx.src.read_u16le()? * 8;
+ let bits_per_sample = dmx.src.read_u16le()?;
let soniton = NASoniton::new(bits_per_sample as u8, SONITON_FLAG_SIGNED);
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);
+ edata = dmx.read_extradata(size - 18)?;
+ } else {
+ edata = None;
+ }
let cname = match register::find_codec_from_wav_twocc(w_format_tag) {
None => "unknown",
Some(name) => name,
Ok(size)
}
+fn parse_idx1(src: &mut ByteReader, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex, size: usize, movi_pos: u64, key_offs: &mut Vec<u64>) -> DemuxerResult<usize> {
+ validate!((size & 15) == 0);
+ let mut tag = [0u8; 4];
+ let num_entries = size >> 4;
+ let mut counter = [0u64; 100];
+ for _ in 0..num_entries {
+ src.read_buf(&mut tag)?;
+ let flags = src.read_u32le()?;
+ let offset = src.read_u32le()? as u64;
+ let _length = src.read_u32le()?;
+
+ 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')) as usize;
+
+ if (flags & 0x10) != 0 {
+ if let Some(str) = strmgr.get_stream(stream_no) {
+ if str.get_media_type() == StreamType::Video {
+ 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);
+ 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)
+}
+
pub struct AVIDemuxerCreator { }
impl DemuxerCreator for AVIDemuxerCreator {
let mut br = ByteReader::new(&mut fr);
let mut dmx = AVIDemuxer::new(&mut br);
let mut sm = StreamManager::new();
- dmx.open(&mut sm).unwrap();
+ let mut si = SeekIndex::new();
+ dmx.open(&mut sm, &mut si).unwrap();
loop {
let pktres = dmx.get_frame(&mut sm);