NotImplemented,
MemoryError,
TryAgain,
+ SeekError,
+ NotPossible,
}
pub type DemuxerResult<T> = Result<T, DemuxerError>;
pub trait DemuxCore<'a> {
- fn open(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()>;
+ fn open(&mut self, strmgr: &mut StreamManager, seek_idx: &mut SeekIndex) -> DemuxerResult<()>;
fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket>;
- fn seek(&mut self, time: u64) -> DemuxerResult<()>;
+ fn seek(&mut self, time: u64, seek_idx: &SeekIndex) -> DemuxerResult<()>;
}
pub trait NAPacketReader {
let mut buf: Vec<u8> = Vec::with_capacity(size);
if buf.capacity() < size { return Err(DemuxerError::MemoryError); }
buf.resize(size, 0);
- let res = self.read_buf(buf.as_mut_slice());
- if let Err(_) = res { return Err(DemuxerError::IOError); }
+ self.read_buf(buf.as_mut_slice())?;
let pkt = NAPacket::new(str, ts, kf, buf);
Ok(pkt)
}
fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()> {
let mut refbuf = pkt.get_buffer();
let buf = refbuf.as_mut().unwrap();
- let res = self.read_buf(buf.as_mut_slice());
- if let Err(_) = res { return Err(DemuxerError::IOError); }
+ self.read_buf(buf.as_mut_slice())?;
Ok(())
}
}
+#[derive(Default)]
pub struct StreamManager {
streams: Vec<NAStreamRef>,
ignored: Vec<bool>,
}
pub struct StreamIter<'a> {
- streams: &'a Vec<NAStreamRef>,
+ streams: &'a [NAStreamRef],
pos: usize,
}
impl<'a> StreamIter<'a> {
- pub fn new(streams: &'a Vec<NAStreamRef>) -> Self {
- StreamIter { streams: streams, pos: 0 }
+ pub fn new(streams: &'a [NAStreamRef]) -> Self {
+ StreamIter { streams, pos: 0 }
}
}
}
}
+#[derive(Clone,Copy,PartialEq)]
+pub enum SeekIndexMode {
+ None,
+ Present,
+ Automatic,
+}
+
+impl Default for SeekIndexMode {
+ fn default() -> Self { SeekIndexMode::None }
+}
+
+#[derive(Clone,Copy,Default)]
+pub struct SeekEntry {
+ pub pts: u64,
+ pub pos: u64,
+}
+
+#[derive(Clone)]
+pub struct StreamSeekInfo {
+ pub id: u32,
+ pub tb_num: u32,
+ pub tb_den: u32,
+ pub filled: bool,
+ pub entries: Vec<SeekEntry>,
+}
+
+impl StreamSeekInfo {
+ pub fn new(id: u32, tb_num: u32, tb_den: u32) -> Self {
+ Self {
+ id, tb_num, tb_den,
+ filled: false,
+ entries: Vec::new(),
+ }
+ }
+ pub fn add_entry(&mut self, entry: SeekEntry) {
+ self.entries.push(entry);
+ }
+ pub fn find_pos(&self, pts: u64) -> Option<u64> {
+ if !self.entries.is_empty() {
+// todo something faster like binary search
+ let mut cand = 0;
+ for (idx, entry) in self.entries.iter().enumerate() {
+ if entry.pts <= pts {
+ cand = idx;
+ } else {
+ break;
+ }
+ }
+ Some(self.entries[cand].pos)
+ } else {
+ None
+ }
+ }
+}
+
+#[derive(Clone,Copy,Default)]
+pub struct SeekIndexResult {
+ pub pts: u64,
+ pub pos: u64,
+ pub str_id: u32,
+}
+
+#[derive(Default)]
+pub struct SeekIndex {
+ pub seek_info: Vec<StreamSeekInfo>,
+ pub mode: SeekIndexMode,
+}
+
+impl SeekIndex {
+ pub fn new() -> Self { Self::default() }
+ pub fn add_stream(&mut self, id: u32, tb_num: u32, tb_den: u32) {
+ if self.stream_id_to_index(id).is_none() {
+ self.seek_info.push(StreamSeekInfo::new(id, tb_num, tb_den));
+ }
+ }
+ pub fn stream_id_to_index(&self, id: u32) -> Option<usize> {
+ for (idx, str) in self.seek_info.iter().enumerate() {
+ if str.id == id {
+ return Some(idx);
+ }
+ }
+ None
+ }
+ pub fn find_pos(&self, time: u64) -> Option<SeekIndexResult> {
+ let mut cand = None;
+ for str in self.seek_info.iter() {
+ if !str.filled { continue; }
+ let pts = NATimeInfo::time_to_ts(time, 1000, str.tb_num, str.tb_den);
+ let pos = str.find_pos(pts);
+ if pos.is_none() { continue; }
+ let pos = pos.unwrap();
+ if cand.is_none() {
+ cand = Some(SeekIndexResult { pts, pos, str_id: str.id });
+ } else if let Some(entry) = cand {
+ if pos < entry.pos {
+ cand = Some(SeekIndexResult { pts, pos, str_id: str.id });
+ }
+ }
+ }
+ cand
+ }
+}
+
pub struct Demuxer<'a> {
- dmx: Box<DemuxCore<'a> + 'a>,
+ dmx: Box<dyn DemuxCore<'a> + 'a>,
streams: StreamManager,
+ seek_idx: SeekIndex,
}
impl<'a> Demuxer<'a> {
- fn new(dmx: Box<DemuxCore<'a> + 'a>, str: StreamManager) -> Self {
+ fn new(dmx: Box<dyn DemuxCore<'a> + 'a>, str: StreamManager, seek_idx: SeekIndex) -> Self {
Demuxer {
- dmx: dmx,
+ dmx,
streams: str,
+ seek_idx,
}
}
pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
}
}
pub fn seek(&mut self, time: u64) -> DemuxerResult<()> {
- self.dmx.seek(time)
+ self.dmx.seek(time, &self.seek_idx)
+ }
+ pub fn get_seek_index(&self) -> &SeekIndex {
+ &self.seek_idx
}
}
///The structure used to create demuxers.
pub trait DemuxerCreator {
/// Create new demuxer instance that will use `ByteReader` source as an input.
- fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<DemuxCore<'a> + 'a>;
+ fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a>;
/// Get the name of current demuxer creator.
fn get_name(&self) -> &'static str;
}
pub fn create_demuxer<'a>(dmxcr: &DemuxerCreator, br: &'a mut ByteReader<'a>) -> DemuxerResult<Demuxer<'a>> {
let mut dmx = dmxcr.new_demuxer(br);
let mut str = StreamManager::new();
- dmx.open(&mut str)?;
- Ok(Demuxer::new(dmx, str))
+ let mut seek_idx = SeekIndex::new();
+ dmx.open(&mut str, &mut seek_idx)?;
+ Ok(Demuxer::new(dmx, str, seek_idx))
}
+#[derive(Default)]
pub struct RegisteredDemuxers {
dmxs: Vec<&'static DemuxerCreator>,
}
projects / nihav.git / blobdiff