src/demuxers/mod.rs

   1 pub mod gdv;
   2 pub mod avi;
   3
   4 use std::fmt;
   5 use std::rc::Rc;
   6 use frame::*;
   7 //use std::collections::HashMap;
   8 use io::byteio::*;
   9
  10 #[derive(Debug,Clone,Copy)]
  11 #[allow(dead_code)]
  12 pub enum StreamType {
  13     Video,
  14     Audio,
  15     Subtitles,
  16     Data,
  17     None,
  18 }
  19
  20 impl fmt::Display for StreamType {
  21     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  22         match *self {
  23             StreamType::Video => write!(f, "Video"),
  24             StreamType::Audio => write!(f, "Audio"),
  25             StreamType::Subtitles => write!(f, "Subtitles"),
  26             StreamType::Data => write!(f, "Data"),
  27             StreamType::None => write!(f, "-"),
  28         }
  29     }
  30 }
  31
  32
  33 #[allow(dead_code)]
  34 #[derive(Clone)]
  35 pub struct NAStream {
  36     media_type:     StreamType,
  37     id:             u32,
  38     num:            usize,
  39     info:           Rc<NACodecInfo>,
  40 }
  41
  42 impl NAStream {
  43     pub fn new(mt: StreamType, id: u32, info: NACodecInfo) -> Self {
  44         NAStream { media_type: mt, id: id, num: 0, info: Rc::new(info) }
  45     }
  46     pub fn get_id(&self) -> u32 { self.id }
  47     pub fn get_num(&self) -> usize { self.num }
  48     pub fn set_num(&mut self, num: usize) { self.num = num; }
  49     pub fn get_info(&self) -> Rc<NACodecInfo> { self.info.clone() }
  50 }
  51
  52 impl fmt::Display for NAStream {
  53     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  54         write!(f, "({}#{} - {})", self.media_type, self.id, self.info.get_properties())
  55     }
  56 }
  57
  58 #[allow(dead_code)]
  59 pub struct NAPacket {
  60     stream:         Rc<NAStream>,
  61     pts:            Option<u64>,
  62     dts:            Option<u64>,
  63     duration:       Option<u64>,
  64     buffer:         Rc<Vec<u8>>,
  65     keyframe:       bool,
  66 //    options:        HashMap<String, NAValue<'a>>,
  67 }
  68
  69 impl NAPacket {
  70     pub fn new(str: Rc<NAStream>, pts: Option<u64>, dts: Option<u64>, dur: Option<u64>, kf: bool, vec: Vec<u8>) -> Self {
  71 //        let mut vec: Vec<u8> = Vec::new();
  72 //        vec.resize(size, 0);
  73         NAPacket { stream: str, pts: pts, dts: dts, duration: dur, keyframe: kf, buffer: Rc::new(vec) }
  74     }
  75     pub fn get_stream(&self) -> Rc<NAStream> { self.stream.clone() }
  76     pub fn get_pts(&self) -> Option<u64> { self.pts }
  77     pub fn get_buffer(&self) -> Rc<Vec<u8>> { self.buffer.clone() }
  78 }
  79
  80 impl fmt::Display for NAPacket {
  81     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  82         let mut foo = format!("[pkt for {} size {}", self.stream, self.buffer.len());
  83         if let Some(pts) = self.pts { foo = format!("{} pts {}", foo, pts); }
  84         if let Some(dts) = self.dts { foo = format!("{} dts {}", foo, dts); }
  85         if let Some(dur) = self.duration { foo = format!("{} duration {}", foo, dur); }
  86         if self.keyframe { foo = format!("{} kf", foo); }
  87         foo = foo + "]";
  88         write!(f, "{}", foo)
  89     }
  90 }
  91
  92 #[derive(Debug)]
  93 #[allow(dead_code)]
  94 pub enum DemuxerError {
  95     EOF,
  96     NoSuchInput,
  97     InvalidData,
  98     IOError,
  99     NotImplemented,
 100     MemoryError,
 101 }
 102
 103 type DemuxerResult<T> = Result<T, DemuxerError>;
 104
 105 pub trait Demux<'a> {
 106     fn open(&mut self) -> DemuxerResult<()>;
 107     fn get_frame(&mut self) -> DemuxerResult<NAPacket>;
 108     fn seek(&mut self, time: u64) -> DemuxerResult<()>;
 109 }
 110
 111 pub trait NAPacketReader {
 112     fn read_packet(&mut self, str: Rc<NAStream>, pts: Option<u64>, dts: Option<u64>, dur: Option<u64>, keyframe: bool, size: usize) -> DemuxerResult<NAPacket>;
 113     fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()>;
 114 }
 115
 116 impl<'a> NAPacketReader for ByteReader<'a> {
 117     fn read_packet(&mut self, str: Rc<NAStream>, pts: Option<u64>, dts: Option<u64>, dur: Option<u64>, kf: bool, size: usize) -> DemuxerResult<NAPacket> {
 118         let mut buf: Vec<u8> = Vec::with_capacity(size);
 119         if buf.capacity() < size { return Err(DemuxerError::MemoryError); }
 120         buf.resize(size, 0);
 121         let res = self.read_buf(buf.as_mut_slice());
 122         if let Err(_) = res { return Err(DemuxerError::IOError); }
 123         let pkt = NAPacket::new(str, pts, dts, dur, kf, buf);
 124         Ok(pkt)
 125     }
 126     fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()> {
 127         let mut refbuf = pkt.get_buffer();
 128         let mut buf = Rc::make_mut(&mut refbuf);
 129         let res = self.read_buf(buf.as_mut_slice());
 130         if let Err(_) = res { return Err(DemuxerError::IOError); }
 131         Ok(())
 132     }
 133 }
 134
 135 pub struct Demuxer {
 136     streams: Vec<Rc<NAStream>>,
 137 }
 138
 139 impl Demuxer {
 140     pub fn new() -> Self { Demuxer { streams: Vec::new() } }
 141     pub fn add_stream(&mut self, stream: NAStream) -> Option<usize> {
 142         let stream_num = self.streams.len();
 143         let mut str = stream.clone();
 144         str.set_num(stream_num);
 145         self.streams.push(Rc::new(str));
 146         Some(stream_num)
 147     }
 148     pub fn get_stream(&self, idx: usize) -> Option<Rc<NAStream>> {
 149         if idx < self.streams.len() {
 150             Some(self.streams[idx].clone())
 151         } else {
 152             None
 153         }
 154     }
 155     pub fn get_stream_by_id(&self, id: u32) -> Option<Rc<NAStream>> {
 156         for i in 0..self.streams.len() {
 157             if self.streams[i].get_id() == id {
 158                 return Some(self.streams[i].clone());
 159             }
 160         }
 161         None
 162     }
 163 }
 164
 165 impl From<ByteIOError> for DemuxerError {
 166     fn from(_: ByteIOError) -> Self { DemuxerError::IOError }
 167 }
 168
 169 //impl NADemuxerBuilder {
 170 //    #[allow(unused_variables)]
 171 //    pub fn create_demuxer(name: &str, url: &str) -> DemuxerResult<Box<NADemuxer<'static>>> {
 172 //        unimplemented!()
 173 //    }
 174 //}