+++ /dev/null
-use std::rc::Rc;
-use crate::frame::*;
-use crate::io::byteio::*;
-
-#[derive(Debug,Clone,Copy,PartialEq)]
-#[allow(dead_code)]
-pub enum DemuxerError {
- EOF,
- NoSuchInput,
- InvalidData,
- IOError,
- NotImplemented,
- MemoryError,
- TryAgain,
-}
-
-type DemuxerResult<T> = Result<T, DemuxerError>;
-
-pub trait DemuxCore<'a> {
- fn open(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()>;
- fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket>;
- fn seek(&mut self, time: u64) -> DemuxerResult<()>;
-}
-
-pub trait NAPacketReader {
- fn read_packet(&mut self, str: Rc<NAStream>, ts: NATimeInfo, keyframe: bool, size: usize) -> DemuxerResult<NAPacket>;
- fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()>;
-}
-
-impl<'a> NAPacketReader for ByteReader<'a> {
- fn read_packet(&mut self, str: Rc<NAStream>, ts: NATimeInfo, kf: bool, size: usize) -> DemuxerResult<NAPacket> {
- 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); }
- 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 = Rc::make_mut(&mut refbuf);
- let res = self.read_buf(buf.as_mut_slice());
- if let Err(_) = res { return Err(DemuxerError::IOError); }
- Ok(())
- }
-}
-
-pub struct StreamManager {
- streams: Vec<Rc<NAStream>>,
- ignored: Vec<bool>,
- no_ign: bool,
-}
-
-impl StreamManager {
- pub fn new() -> Self {
- StreamManager {
- streams: Vec::new(),
- ignored: Vec::new(),
- no_ign: true,
- }
- }
- pub fn iter(&self) -> StreamIter { StreamIter::new(&self.streams) }
-
- pub fn add_stream(&mut self, stream: NAStream) -> Option<usize> {
- let stream_num = self.streams.len();
- let mut str = stream.clone();
- str.set_num(stream_num);
- self.streams.push(Rc::new(str));
- self.ignored.push(false);
- Some(stream_num)
- }
- pub fn get_stream(&self, idx: usize) -> Option<Rc<NAStream>> {
- if idx < self.streams.len() {
- Some(self.streams[idx].clone())
- } else {
- None
- }
- }
- pub fn get_stream_by_id(&self, id: u32) -> Option<Rc<NAStream>> {
- for i in 0..self.streams.len() {
- if self.streams[i].get_id() == id {
- return Some(self.streams[i].clone());
- }
- }
- None
- }
- pub fn get_num_streams(&self) -> usize { self.streams.len() }
- pub fn is_ignored(&self, idx: usize) -> bool {
- if self.no_ign {
- true
- } else if idx < self.ignored.len() {
- self.ignored[idx]
- } else {
- false
- }
- }
- pub fn is_ignored_id(&self, id: u32) -> bool {
- for i in 0..self.streams.len() {
- if self.streams[i].get_id() == id {
- return self.ignored[i];
- }
- }
- false
- }
- pub fn set_ignored(&mut self, idx: usize) {
- if idx < self.ignored.len() {
- self.ignored[idx] = true;
- self.no_ign = false;
- }
- }
- pub fn set_unignored(&mut self, idx: usize) {
- if idx < self.ignored.len() {
- self.ignored[idx] = false;
- }
- }
-}
-
-pub struct StreamIter<'a> {
- streams: &'a Vec<Rc<NAStream>>,
- pos: usize,
-}
-
-impl<'a> StreamIter<'a> {
- pub fn new(streams: &'a Vec<Rc<NAStream>>) -> Self {
- StreamIter { streams: streams, pos: 0 }
- }
-}
-
-impl<'a> Iterator for StreamIter<'a> {
- type Item = Rc<NAStream>;
-
- fn next(&mut self) -> Option<Self::Item> {
- if self.pos >= self.streams.len() { return None; }
- let ret = self.streams[self.pos].clone();
- self.pos += 1;
- Some(ret)
- }
-}
-
-pub struct Demuxer<'a> {
- dmx: Box<DemuxCore<'a> + 'a>,
- streams: StreamManager,
-}
-
-impl<'a> Demuxer<'a> {
- fn new(dmx: Box<DemuxCore<'a> + 'a>, str: StreamManager) -> Self {
- Demuxer {
- dmx: dmx,
- streams: str,
- }
- }
- pub fn get_stream(&self, idx: usize) -> Option<Rc<NAStream>> {
- self.streams.get_stream(idx)
- }
- pub fn get_stream_by_id(&self, id: u32) -> Option<Rc<NAStream>> {
- self.streams.get_stream_by_id(id)
- }
- pub fn get_num_streams(&self) -> usize {
- self.streams.get_num_streams()
- }
- pub fn get_streams(&self) -> StreamIter {
- self.streams.iter()
- }
- pub fn is_ignored_stream(&self, idx: usize) -> bool {
- self.streams.is_ignored(idx)
- }
- pub fn set_ignored_stream(&mut self, idx: usize) {
- self.streams.set_ignored(idx)
- }
- pub fn set_unignored_stream(&mut self, idx: usize) {
- self.streams.set_unignored(idx)
- }
-
- pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
- loop {
- let res = self.dmx.get_frame(&mut self.streams);
- if self.streams.no_ign || res.is_err() { return res; }
- let res = res.unwrap();
- let idx = res.get_stream().get_num();
- if !self.is_ignored_stream(idx) {
- return Ok(res);
- }
- }
- }
- pub fn seek(&mut self, time: u64) -> DemuxerResult<()> {
- self.dmx.seek(time)
- }
-}
-
-impl From<ByteIOError> for DemuxerError {
- fn from(_: ByteIOError) -> Self { DemuxerError::IOError }
-}
-
-///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>;
- /// Get the name of current demuxer creator.
- fn get_name(&self) -> &'static str;
-}
-
-macro_rules! validate {
- ($a:expr) => { if !$a { println!("check failed at {}:{}", file!(), line!()); return Err(DemuxerError::InvalidData); } };
-}
-
-#[cfg(feature="demuxer_gdv")]
-mod gdv;
-#[cfg(feature="demuxer_avi")]
-mod avi;
-#[cfg(feature="demuxer_real")]
-mod realmedia;
-
-
-const DEMUXERS: &[&'static DemuxerCreator] = &[
-#[cfg(feature="demuxer_avi")]
- &avi::AVIDemuxerCreator {},
-#[cfg(feature="demuxer_gdv")]
- &gdv::GDVDemuxerCreator {},
-#[cfg(feature="demuxer_real")]
- &realmedia::RealMediaDemuxerCreator {},
-#[cfg(feature="demuxer_real")]
- &realmedia::RealAudioDemuxerCreator {},
-#[cfg(feature="demuxer_real")]
- &realmedia::RealIVRDemuxerCreator {},
-];
-
-pub fn find_demuxer(name: &str) -> Option<&DemuxerCreator> {
- for &dmx in DEMUXERS {
- if dmx.get_name() == name {
- return Some(dmx);
- }
- }
- None
-}
-
-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))
-}
projects / nihav.git / blobdiff