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