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 self.read_buf(buf.as_mut_slice())?;
35 let pkt = NAPacket::new(str, ts, kf, buf);
38 fn fill_packet(&mut self, pkt: &mut NAPacket) -> DemuxerResult<()> {
39 let mut refbuf = pkt.get_buffer();
40 let buf = refbuf.as_mut().unwrap();
41 self.read_buf(buf.as_mut_slice())?;
47 pub struct StreamManager {
48 streams: Vec<NAStreamRef>,
54 pub fn new() -> Self {
61 pub fn iter(&self) -> StreamIter { StreamIter::new(&self.streams) }
63 pub fn add_stream(&mut self, stream: NAStream) -> Option<usize> {
64 let stream_num = self.streams.len();
65 let mut str = stream.clone();
66 str.set_num(stream_num);
67 self.streams.push(str.into_ref());
68 self.ignored.push(false);
71 pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
72 if idx < self.streams.len() {
73 Some(self.streams[idx].clone())
78 pub fn get_stream_by_id(&self, id: u32) -> Option<NAStreamRef> {
79 for i in 0..self.streams.len() {
80 if self.streams[i].get_id() == id {
81 return Some(self.streams[i].clone());
86 pub fn get_num_streams(&self) -> usize { self.streams.len() }
87 pub fn is_ignored(&self, idx: usize) -> bool {
90 } else if idx < self.ignored.len() {
96 pub fn is_ignored_id(&self, id: u32) -> bool {
97 for i in 0..self.streams.len() {
98 if self.streams[i].get_id() == id {
99 return self.ignored[i];
104 pub fn set_ignored(&mut self, idx: usize) {
105 if idx < self.ignored.len() {
106 self.ignored[idx] = true;
110 pub fn set_unignored(&mut self, idx: usize) {
111 if idx < self.ignored.len() {
112 self.ignored[idx] = false;
117 pub struct StreamIter<'a> {
118 streams: &'a [NAStreamRef],
122 impl<'a> StreamIter<'a> {
123 pub fn new(streams: &'a [NAStreamRef]) -> Self {
124 StreamIter { streams, pos: 0 }
128 impl<'a> Iterator for StreamIter<'a> {
129 type Item = NAStreamRef;
131 fn next(&mut self) -> Option<Self::Item> {
132 if self.pos >= self.streams.len() { return None; }
133 let ret = self.streams[self.pos].clone();
139 pub struct Demuxer<'a> {
140 dmx: Box<dyn DemuxCore<'a> + 'a>,
141 streams: StreamManager,
144 impl<'a> Demuxer<'a> {
145 fn new(dmx: Box<dyn DemuxCore<'a> + 'a>, str: StreamManager) -> Self {
151 pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
152 self.streams.get_stream(idx)
154 pub fn get_stream_by_id(&self, id: u32) -> Option<NAStreamRef> {
155 self.streams.get_stream_by_id(id)
157 pub fn get_num_streams(&self) -> usize {
158 self.streams.get_num_streams()
160 pub fn get_streams(&self) -> StreamIter {
163 pub fn is_ignored_stream(&self, idx: usize) -> bool {
164 self.streams.is_ignored(idx)
166 pub fn set_ignored_stream(&mut self, idx: usize) {
167 self.streams.set_ignored(idx)
169 pub fn set_unignored_stream(&mut self, idx: usize) {
170 self.streams.set_unignored(idx)
173 pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
175 let res = self.dmx.get_frame(&mut self.streams);
176 if self.streams.no_ign || res.is_err() { return res; }
177 let res = res.unwrap();
178 let idx = res.get_stream().get_num();
179 if !self.is_ignored_stream(idx) {
184 pub fn seek(&mut self, time: u64) -> DemuxerResult<()> {
189 impl From<ByteIOError> for DemuxerError {
190 fn from(_: ByteIOError) -> Self { DemuxerError::IOError }
193 ///The structure used to create demuxers.
194 pub trait DemuxerCreator {
195 /// Create new demuxer instance that will use `ByteReader` source as an input.
196 fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a>;
197 /// Get the name of current demuxer creator.
198 fn get_name(&self) -> &'static str;
201 pub fn create_demuxer<'a>(dmxcr: &DemuxerCreator, br: &'a mut ByteReader<'a>) -> DemuxerResult<Demuxer<'a>> {
202 let mut dmx = dmxcr.new_demuxer(br);
203 let mut str = StreamManager::new();
205 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 {