src/demuxers/mod.rs

   1 pub mod gdv;
   2
   3 use std::fmt;
   4 use std::rc::Rc;
   5 use frame::*;
   6 //use std::collections::HashMap;
   7 use io::byteio::*;
   8
   9 #[derive(Debug)]
  10 #[allow(dead_code)]
  11 pub enum StreamType {
  12     Video,
  13     Audio,
  14     Subtitles,
  15     Data,
  16 }
  17
  18 impl fmt::Display for StreamType {
  19     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  20         match *self {
  21             StreamType::Video => write!(f, "Video"),
  22             StreamType::Audio => write!(f, "Audio"),
  23             StreamType::Subtitles => write!(f, "Subtitles"),
  24             StreamType::Data => write!(f, "Data"),
  25         }
  26     }
  27 }
  28
  29
  30 #[allow(dead_code)]
  31 pub struct NAStream<'a> {
  32     media_type:     StreamType,
  33     id:             u32,
  34     info:           Rc<NACodecInfo<'a>>,
  35 }
  36
  37 impl<'a> NAStream<'a> {
  38     pub fn new(mt: StreamType, id: u32, info: NACodecInfo<'a>) -> Self {
  39         NAStream { media_type: mt, id: id, info: Rc::new(info) }
  40     }
  41     pub fn get_id(&self) -> u32 { self.id }
  42     pub fn get_info(&self) -> Rc<NACodecInfo<'a>> { self.info.clone() }
  43 }
  44
  45 impl<'a> fmt::Display for NAStream<'a> {
  46     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  47         write!(f, "({}#{})", self.media_type, self.id)
  48     }
  49 }
  50
  51 #[allow(dead_code)]
  52 pub struct NAPacket<'a> {
  53     stream:         Rc<NAStream<'a>>,
  54     pts:            Option<u64>,
  55     dts:            Option<u64>,
  56     duration:       Option<u64>,
  57     buffer:         Rc<Vec<u8>>,
  58     keyframe:       bool,
  59 //    options:        HashMap<String, NAValue<'a>>,
  60 }
  61
  62 impl<'a> NAPacket<'a> {
  63     pub fn new(str: Rc<NAStream<'a>>, pts: Option<u64>, dts: Option<u64>, dur: Option<u64>, kf: bool, vec: Vec<u8>) -> Self {
  64 //        let mut vec: Vec<u8> = Vec::new();
  65 //        vec.resize(size, 0);
  66         NAPacket { stream: str, pts: pts, dts: dts, duration: dur, keyframe: kf, buffer: Rc::new(vec) }
  67     }
  68     pub fn get_stream(&self) -> Rc<NAStream<'a>> { self.stream.clone() }
  69     pub fn get_pts(&self) -> Option<u64> { self.pts }
  70     pub fn get_buffer(&self) -> Rc<Vec<u8>> { self.buffer.clone() }
  71 }
  72
  73 impl<'a> fmt::Display for NAPacket<'a> {
  74     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  75         let mut foo = format!("[pkt for {} size {}", self.stream, self.buffer.len());
  76         if let Some(pts) = self.pts { foo = format!("{} pts {}", foo, pts); }
  77         if let Some(dts) = self.dts { foo = format!("{} dts {}", foo, dts); }
  78         if let Some(dur) = self.duration { foo = format!("{} duration {}", foo, dur); }
  79         if self.keyframe { foo = format!("{} kf", foo); }
  80         foo = foo + "]";
  81         write!(f, "{}", foo)
  82     }
  83 }
  84
  85 #[derive(Debug)]
  86 #[allow(dead_code)]
  87 pub enum DemuxerError {
  88     EOF,
  89     NoSuchInput,
  90     InvalidData,
  91     IOError,
  92     NotImplemented,
  93     MemoryError,
  94 }
  95
  96 type DemuxerResult<T> = Result<T, DemuxerError>;
  97
  98 pub trait NADemuxer<'a> {
  99     fn open(&mut self) -> DemuxerResult<()>;
 100     fn get_frame(&mut self) -> DemuxerResult<NAPacket>;
 101     fn seek(&mut self, time: u64) -> DemuxerResult<()>;
 102 }
 103
 104 pub trait NAPacketReader<'a> {
 105     fn read_packet(&mut self, str: Rc<NAStream<'a>>, pts: Option<u64>, dts: Option<u64>, dur: Option<u64>, keyframe: bool, size: usize) -> DemuxerResult<NAPacket>;
 106     fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()>;
 107 }
 108
 109 impl<'a> NAPacketReader<'a> for ByteReader<'a> {
 110     fn read_packet(&mut self, str: Rc<NAStream<'a>>, pts: Option<u64>, dts: Option<u64>, dur: Option<u64>, kf: bool, size: usize) -> DemuxerResult<NAPacket> {
 111         let mut buf: Vec<u8> = Vec::with_capacity(size);
 112         if buf.capacity() < size { return Err(DemuxerError::MemoryError); }
 113         buf.resize(size, 0);
 114         let res = self.read_buf(buf.as_mut_slice());
 115         if let Err(_) = res { return Err(DemuxerError::IOError); }
 116         if res.unwrap() < buf.len() { return Err(DemuxerError::IOError); }
 117         let pkt = NAPacket::new(str, pts, dts, dur, kf, buf);
 118         Ok(pkt)
 119     }
 120     fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()> {
 121         let mut refbuf = pkt.get_buffer();
 122         let mut buf = Rc::make_mut(&mut refbuf);
 123         let res = self.read_buf(buf.as_mut_slice());
 124         if let Err(_) = res { return Err(DemuxerError::IOError); }
 125         if res.unwrap() < buf.len() { return Err(DemuxerError::IOError); }
 126         Ok(())
 127     }
 128 }
 129
 130 pub struct NADemuxerBuilder {
 131 }
 132
 133 impl From<ByteIOError> for DemuxerError {
 134     fn from(_: ByteIOError) -> Self { DemuxerError::IOError }
 135 }
 136
 137 impl NADemuxerBuilder {
 138     #[allow(unused_variables)]
 139     pub fn create_demuxer(name: &str, url: &str) -> DemuxerResult<Box<NADemuxer<'static>>> {
 140         unimplemented!()
 141     }
 142 }