1 pub use crate::frame::*;
2 pub use crate::io::byteio::*;
4 #[derive(Debug,Clone,Copy,PartialEq)]
6 pub enum DemuxerError {
16 pub type DemuxerResult<T> = Result<T, DemuxerError>;
18 pub trait DemuxCore<'a> {
19 fn open(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<()>;
20 fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket>;
21 fn seek(&mut self, time: u64) -> DemuxerResult<()>;
24 pub trait NAPacketReader {
25 fn read_packet(&mut self, str: NAStreamRef, ts: NATimeInfo, keyframe: bool, size: usize) -> DemuxerResult<NAPacket>;
26 fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()>;
29 impl<'a> NAPacketReader for ByteReader<'a> {
30 fn read_packet(&mut self, str: NAStreamRef, ts: NATimeInfo, kf: bool, size: usize) -> DemuxerResult<NAPacket> {
31 let mut buf: Vec<u8> = Vec::with_capacity(size);
32 if buf.capacity() < size { return Err(DemuxerError::MemoryError); }
34 let res = self.read_buf(buf.as_mut_slice());
35 if let Err(_) = res { return Err(DemuxerError::IOError); }
36 let pkt = NAPacket::new(str, ts, kf, buf);
39 fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()> {
40 let mut refbuf = pkt.get_buffer();
41 let buf = refbuf.as_mut().unwrap();
42 let res = self.read_buf(buf.as_mut_slice());
43 if let Err(_) = res { return Err(DemuxerError::IOError); }
48 pub struct StreamManager {
49 streams: Vec<NAStreamRef>,
55 pub fn new() -> Self {
62 pub fn iter(&self) -> StreamIter { StreamIter::new(&self.streams) }
64 pub fn add_stream(&mut self, stream: NAStream) -> Option<usize> {
65 let stream_num = self.streams.len();
66 let mut str = stream.clone();
67 str.set_num(stream_num);
68 self.streams.push(str.into_ref());
69 self.ignored.push(false);
72 pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
73 if idx < self.streams.len() {
74 Some(self.streams[idx].clone())
79 pub fn get_stream_by_id(&self, id: u32) -> Option<NAStreamRef> {
80 for i in 0..self.streams.len() {
81 if self.streams[i].get_id() == id {
82 return Some(self.streams[i].clone());
87 pub fn get_num_streams(&self) -> usize { self.streams.len() }
88 pub fn is_ignored(&self, idx: usize) -> bool {
91 } else if idx < self.ignored.len() {
97 pub fn is_ignored_id(&self, id: u32) -> bool {
98 for i in 0..self.streams.len() {
99 if self.streams[i].get_id() == id {
100 return self.ignored[i];
105 pub fn set_ignored(&mut self, idx: usize) {
106 if idx < self.ignored.len() {
107 self.ignored[idx] = true;
111 pub fn set_unignored(&mut self, idx: usize) {
112 if idx < self.ignored.len() {
113 self.ignored[idx] = false;
118 pub struct StreamIter<'a> {
119 streams: &'a Vec<NAStreamRef>,
123 impl<'a> StreamIter<'a> {
124 pub fn new(streams: &'a Vec<NAStreamRef>) -> Self {
125 StreamIter { streams: streams, pos: 0 }
129 impl<'a> Iterator for StreamIter<'a> {
130 type Item = NAStreamRef;
132 fn next(&mut self) -> Option<Self::Item> {
133 if self.pos >= self.streams.len() { return None; }
134 let ret = self.streams[self.pos].clone();
140 pub struct Demuxer<'a> {
141 dmx: Box<DemuxCore<'a> + 'a>,
142 streams: StreamManager,
145 impl<'a> Demuxer<'a> {
146 fn new(dmx: Box<DemuxCore<'a> + 'a>, str: StreamManager) -> Self {
152 pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
153 self.streams.get_stream(idx)
155 pub fn get_stream_by_id(&self, id: u32) -> Option<NAStreamRef> {
156 self.streams.get_stream_by_id(id)
158 pub fn get_num_streams(&self) -> usize {
159 self.streams.get_num_streams()
161 pub fn get_streams(&self) -> StreamIter {
164 pub fn is_ignored_stream(&self, idx: usize) -> bool {
165 self.streams.is_ignored(idx)
167 pub fn set_ignored_stream(&mut self, idx: usize) {
168 self.streams.set_ignored(idx)
170 pub fn set_unignored_stream(&mut self, idx: usize) {
171 self.streams.set_unignored(idx)
174 pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
176 let res = self.dmx.get_frame(&mut self.streams);
177 if self.streams.no_ign || res.is_err() { return res; }
178 let res = res.unwrap();
179 let idx = res.get_stream().get_num();
180 if !self.is_ignored_stream(idx) {
185 pub fn seek(&mut self, time: u64) -> DemuxerResult<()> {
190 impl From<ByteIOError> for DemuxerError {
191 fn from(_: ByteIOError) -> Self { DemuxerError::IOError }
194 ///The structure used to create demuxers.
195 pub trait DemuxerCreator {
196 /// Create new demuxer instance that will use `ByteReader` source as an input.
197 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<DemuxCore<'a> + 'a>;
198 /// Get the name of current demuxer creator.
199 fn get_name(&self) -> &'static str;
202 pub fn create_demuxer<'a>(dmxcr: &DemuxerCreator, br: &'a mut ByteReader<'a>) -> DemuxerResult<Demuxer<'a>> {
203 let mut dmx = dmxcr.new_demuxer(br);
204 let mut str = StreamManager::new();
206 Ok(Demuxer::new(dmx, str))
209 pub struct RegisteredDemuxers {
210 dmxs: Vec<&'static DemuxerCreator>,
213 impl RegisteredDemuxers {
214 pub fn new() -> Self {
215 Self { dmxs: Vec::new() }
217 pub fn add_demuxer(&mut self, dmx: &'static DemuxerCreator) {
220 pub fn find_demuxer(&self, name: &str) -> Option<&DemuxerCreator> {
221 for &dmx in self.dmxs.iter() {
222 if dmx.get_name() == name {