[nihav-encoder.git] / src / demux.rs

use std::io::SeekFrom;
use nihav_core::codecs::*;
use nihav_core::demuxers::*;
use nihav_core::muxers::*;
use nihav_registry::detect;
use nihav_core::io::byteio::ByteReader;
use nihav_allstuff::*;
use crate::null::*;
use crate::imgseq::*;

pub struct FullRegister {
    pub dmx_reg:    RegisteredDemuxers,
    pub rdmx_reg:   RegisteredRawDemuxers,
    pub pkt_reg:    RegisteredPacketisers,
    pub dec_reg:    RegisteredDecoders,
    pub enc_reg:    RegisteredEncoders,
    pub mux_reg:    RegisteredMuxers,
}

impl FullRegister {
    pub fn new() -> Self {
        let mut dmx_reg = RegisteredDemuxers::new();
        nihav_register_all_demuxers(&mut dmx_reg);
        let mut rdmx_reg = RegisteredRawDemuxers::new();
        nihav_register_all_raw_demuxers(&mut rdmx_reg);
        let mut dec_reg = RegisteredDecoders::new();
        nihav_register_all_decoders(&mut dec_reg);
        let mut pkt_reg = RegisteredPacketisers::new();
        nihav_register_all_packetisers(&mut pkt_reg);
        let mut enc_reg = RegisteredEncoders::new();
        nihav_register_all_encoders(&mut enc_reg);
        enc_reg.add_encoder(NULL_ENCODER);
        let mut mux_reg = RegisteredMuxers::new();
        nihav_register_all_muxers(&mut mux_reg);
        mux_reg.add_muxer(NULL_MUXER);
        Self { dmx_reg, rdmx_reg, pkt_reg, dec_reg, enc_reg, mux_reg }
    }
}

pub struct RawStreamCtx<'a> {
    stream:     NAStreamRef,
    sm:         StreamManager,
    packetiser: Box<dyn NAPacketiser + Send>,
    br:         &'a mut ByteReader<'a>,
    pts:        u64,
}

impl<'a> RawStreamCtx<'a> {
    fn new(stream: NAStreamRef, packetiser: Box<dyn NAPacketiser + Send>, br: &'a mut ByteReader<'a>) -> Self {
        let mut sm = StreamManager::new();
        sm.add_stream_ref(stream.clone());
        Self { stream, sm, packetiser, br, pts: 0 }
    }
}

pub enum DemuxerObject<'a> {
    None,
    Normal(Demuxer<'a>),
    Raw(RawDemuxer<'a>, Vec<Option<Box<dyn NAPacketiser + Send>>>, bool),
    RawStream(RawStreamCtx<'a>),
    ImageSequence(ImgSeqDemuxer),
}

impl<'a> DemuxerObject<'a> {
    pub fn create(br: &'a mut ByteReader<'a>, reg: &FullRegister, name: &str, ifmt: &Option<String>, is_raw: bool) -> DemuxerObject<'a> {
        if !is_raw {
            let dmx_name = if let Some(ref dname) = ifmt {
                    dname.as_str()
                } else if let Some((dname, score)) = detect::detect_format(name, br) {
                    println!("detected {} with score {:?}", dname, score);
                    dname
                } else {
                    ""
                };
            if !dmx_name.is_empty() {
                println!("trying demuxer {} on {}", dmx_name, name);
                if let Some(dmx_fact) = reg.dmx_reg.find_demuxer(dmx_name) {
                    br.seek(SeekFrom::Start(0)).unwrap();
                    let dmx = create_demuxer(dmx_fact, br).unwrap();
                    return DemuxerObject::Normal(dmx);
                }
            }
            if ifmt.is_some() {
                return DemuxerObject::None;
            }
            if !dmx_name.is_empty() {
                println!("trying raw demuxer {} on {}", dmx_name, name);
                if let Some(rdmx_fact) = reg.rdmx_reg.find_demuxer(dmx_name) {
                    br.seek(SeekFrom::Start(0)).unwrap();
                    let dmx = create_raw_demuxer(rdmx_fact, br).unwrap();
                    let mut pkts = Vec::new();
                    for stream in dmx.get_streams() {
                        if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
                            let packetiser = (pcreate)();
                            pkts.push(Some(packetiser));
                        } else {
                            pkts.push(None);
                        }
                    }
                    return DemuxerObject::Raw(dmx, pkts, false);
                }
            }
            for rdmx in reg.rdmx_reg.iter() {
                if rdmx.check_format(br) {
                    println!("detected {} as {}", name, rdmx.get_name());
                    br.seek(SeekFrom::Start(0)).unwrap();
                    let dmx = create_raw_demuxer(*rdmx, br).unwrap();
                    let mut pkts = Vec::new();
                    for stream in dmx.get_streams() {
                        if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
                            let packetiser = (pcreate)();
                            pkts.push(Some(packetiser));
                        } else {
                            pkts.push(None);
                        }
                    }
                    return DemuxerObject::Raw(dmx, pkts, false);
                }
            }
        }
        br.seek(SeekFrom::Start(0)).unwrap();
        let mut buf = vec![0; 1048576];
        let size = br.peek_buf(&mut buf).unwrap();
        let mut pname = "";

        for pinfo in reg.pkt_reg.iter() {
            let mut packetiser = (pinfo.get_packetiser)();
            packetiser.add_data(&buf[..size]);
            if packetiser.parse_stream(0).is_ok() {
                pname = pinfo.name;
                break;
            }
        }
        if !pname.is_empty() {
            println!("found raw stream of type {} for {}", pname, name);
            let pcreate = reg.pkt_reg.find_packetiser(pname).unwrap();
            let mut packetiser = (pcreate)();
            packetiser.add_data(&buf[..size]);
            let stream = packetiser.parse_stream(0).unwrap();
            packetiser.reset();
            DemuxerObject::RawStream(RawStreamCtx::new(stream, packetiser, br))
        } else {
            DemuxerObject::None
        }
    }
    pub fn create_imgseq(isd: ImgSeqDemuxer) -> Self {
        DemuxerObject::ImageSequence(isd)
    }
    pub fn is_none(&self) -> bool {
        matches!(*self, DemuxerObject::None)
    }
    pub fn get_duration(&self) -> u64 {
        match *self {
            DemuxerObject::Normal(ref dmx) => dmx.get_duration(),
            DemuxerObject::Raw(ref dmx, _, _) => dmx.get_duration(),
            DemuxerObject::RawStream(ref ctx) => {
                NATimeInfo::ts_to_time(ctx.stream.duration, 1000, ctx.stream.tb_num, ctx.stream.tb_den)
            },
            _ => 0,
        }
    }
    pub fn get_num_streams(&self) -> usize {
        match *self {
            DemuxerObject::None => 0,
            DemuxerObject::Normal(ref dmx) => dmx.get_num_streams(),
            DemuxerObject::Raw(ref dmx, _, _) => dmx.get_num_streams(),
            DemuxerObject::RawStream(_) => 1,
            DemuxerObject::ImageSequence(_) => 1,
        }
    }
    pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
        match *self {
            DemuxerObject::Normal(ref dmx) => dmx.get_stream(idx),
            DemuxerObject::Raw(ref dmx, _, _) => dmx.get_stream(idx),
            DemuxerObject::RawStream(ref ctx) if idx == 0 => Some(ctx.stream.clone()),
            DemuxerObject::ImageSequence(ref ctx) if idx == 0 => Some(ctx.stream.clone()),
            _ => None,
        }
    }
    pub fn get_streams(&self) -> StreamIter {
        match *self {
            DemuxerObject::Normal(ref dmx) => dmx.get_streams(),
            DemuxerObject::Raw(ref dmx, _, _) => dmx.get_streams(),
            DemuxerObject::RawStream(ref ctx) => ctx.sm.iter(),
            DemuxerObject::ImageSequence(ref ctx) => ctx.sm.iter(),
            _ => unreachable!(),
        }
    }
    pub fn get_stream_manager(&self) -> &StreamManager {
        match *self {
            DemuxerObject::Normal(ref dmx) => dmx.get_stream_manager(),
            DemuxerObject::Raw(ref dmx, _, _) => dmx.get_stream_manager(),
            DemuxerObject::RawStream(ref ctx) => &ctx.sm,
            DemuxerObject::ImageSequence(ref ctx) => &ctx.sm,
            _ => unreachable!(),
        }
    }
    pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
        match *self {
            DemuxerObject::Normal(ref mut dmx) => dmx.get_frame(),
            DemuxerObject::Raw(ref mut dmx, ref mut packetisers, ref mut eof) => {
                loop {
                    let mut has_some = false;
                    for (stream, p) in dmx.get_streams().zip(packetisers.iter_mut()) {
                        if let Some(ref mut pkts) = p {
                            match pkts.get_packet(stream.clone()) {
                                Ok(Some(pkt)) => return Ok(pkt),
                                Ok(None) | Err(DecoderError::ShortData) => {
                                    if *eof {
                                        *p = None;
                                    }
                                },
                                Err(err) => {
                                    println!("packetisation error {:?}", err);
                                    return Err(DemuxerError::InvalidData);
                                }
                            };
                            has_some |= p.is_some();
                        }
                    }
                    if !has_some {
                        return Err(DemuxerError::EOF);
                    }
                    if let Ok(data) = dmx.get_data() {
                        let id = data.get_stream().get_id();
                        for (i, stream) in dmx.get_streams().enumerate() {
                            if stream.get_id() == id {
                                if let Some(ref mut pkts) = packetisers[i] {
                                    pkts.add_data(&data.get_buffer());
                                }
                                break;
                            }
                        }
                    } else {
                        *eof = true;
                    }
                }
            },
            DemuxerObject::RawStream(ref mut ctx) => {
                let mut buf = [0; 65536];
                loop {
                    match ctx.packetiser.get_packet(ctx.stream.clone()) {
                        Ok(Some(mut packet)) => {
                            if packet.get_pts().is_none() && packet.get_duration().is_some() {
                                packet.ts.pts = Some(ctx.pts);
                            }
                            ctx.pts += packet.get_duration().unwrap_or(0);
                            return Ok(packet);
                        },
                        Ok(None) => {},
                        Err(DecoderError::ShortData) => {},
                        _ => return Err(DemuxerError::InvalidData),
                    };
                    match ctx.br.read_buf_some(&mut buf) {
                        Ok(size) => {
                            ctx.packetiser.add_data(&buf[..size]);
                        },
                        Err(_) => {
                            match ctx.packetiser.get_packet(ctx.stream.clone()) {
                                Ok(Some(mut packet)) => {
                                    if packet.get_pts().is_none() && packet.get_duration().is_some() {
                                        packet.ts.pts = Some(ctx.pts);
                                    }
                                    ctx.pts += packet.get_duration().unwrap_or(0);
                                    return Ok(packet);
                                },
                                Ok(None) | Err(DecoderError::ShortData) => return Err(DemuxerError::EOF),
                                _ => return Err(DemuxerError::InvalidData),
                            };
                        },
                    };
                }
            },
            DemuxerObject::ImageSequence(ref mut ctx) => ctx.get_frame(),
            _ => unreachable!(),
        }
    }
    pub fn seek(&mut self, seek_time: NATimePoint) -> DemuxerResult<()> {
        match *self {
            DemuxerObject::Normal(ref mut dmx) => dmx.seek(seek_time),
            DemuxerObject::Raw(ref mut dmx, _, _) => dmx.seek(seek_time),
            DemuxerObject::ImageSequence(ref mut ctx) => ctx.seek(seek_time),
            _ => Err(DemuxerError::NotImplemented),
        }
    }
}

impl<'a> NAOptionHandler for DemuxerObject<'a> {
    fn get_supported_options(&self) -> &[NAOptionDefinition] {
        match *self {
            DemuxerObject::Normal(ref dmx) => dmx.get_supported_options(),
            DemuxerObject::Raw(ref dmx, _, _) => dmx.get_supported_options(),
            DemuxerObject::ImageSequence(ref ctx) => ctx.get_supported_options(),
            _ => &[],
        }
    }
    fn set_options(&mut self, options: &[NAOption]) {
        match *self {
            DemuxerObject::Normal(ref mut dmx) => dmx.set_options(options),
            DemuxerObject::Raw(ref mut dmx, _, _) => dmx.set_options(options),
            DemuxerObject::ImageSequence(ref mut ctx) => ctx.set_options(options),
            _ => {},
        }
    }
    fn query_option_value(&self, name: &str) -> Option<NAValue> {
        match *self {
            DemuxerObject::Normal(ref dmx) => dmx.query_option_value(name),
            DemuxerObject::Raw(ref dmx, _, _) => dmx.query_option_value(name),
            DemuxerObject::ImageSequence(ref ctx) => ctx.query_option_value(name),
            _ => None,
        }
    }
}

pub fn detect_tags(br: &mut ByteReader) -> (bool, u64, Option<u64>) {
    let mut is_raw = false;
    let mut start = 0;
    let mut end = None;

    // check for ID3v{2-4}
    let mut buf = [0; 5];
    br.peek_buf(&mut buf).unwrap();
    if &buf[0..3] == b"ID3" && buf[3] > 0 && buf[3] < 5 && buf[4] == 0 { //ID3 tag found, must be a raw stream
        br.read_skip(6).unwrap();
        let mut size = 0;
        for _ in 0..4 {
            let b = br.read_byte().unwrap();
            if (b & 0x80) != 0 {
                println!("Invalid ID3 size");
                break;
            }
            size = (size << 7) | u64::from(b);
        }
        start = size + 10;
        is_raw = true;
    }
    // check for ID3v1
    br.seek(SeekFrom::End(-128)).unwrap();
    let off = br.tell();
    br.peek_buf(&mut buf[..3]).unwrap();
    if &buf[0..3] == b"TAG" {
        end = Some(off);
    }
    // check for APETAG
    let mut buf = [0; 8];
    if let Some(off) = end {
        br.seek(SeekFrom::Start(off - 32)).unwrap();
    } else {
        br.seek(SeekFrom::End(-32)).unwrap();
    }
    let off = br.tell();
    br.read_buf(&mut buf).unwrap();
    if &buf == b"APETAGEX" {
        let ver     = br.read_u32le().unwrap();
        let size    = u64::from(br.read_u32le().unwrap());
        let _items  = br.read_u32le().unwrap();
        let flags   = br.read_u32le().unwrap();
        if ver == 1000 || (flags & 0x80000000) == 0 {
            end = Some(off - size + 32);
        } else {
            end = Some(off - size);
        }
    }

    (is_raw, start, end)
}
Commit	Line	Data
91a15e39 KS	1	use std::io::SeekFrom;
	2	use nihav_core::codecs::*;
	3	use nihav_core::demuxers::*;
	4	use nihav_core::muxers::*;
	5	use nihav_registry::detect;
	6	use nihav_core::io::byteio::ByteReader;
	7	use nihav_allstuff::*;
	8	use crate::null::*;
90683bc3	9	use crate::imgseq::*;
91a15e39 KS	10
	11	pub struct FullRegister {
	12	pub dmx_reg: RegisteredDemuxers,
	13	pub rdmx_reg: RegisteredRawDemuxers,
	14	pub pkt_reg: RegisteredPacketisers,
	15	pub dec_reg: RegisteredDecoders,
	16	pub enc_reg: RegisteredEncoders,
	17	pub mux_reg: RegisteredMuxers,
	18	}
	19
	20	impl FullRegister {
	21	pub fn new() -> Self {
	22	let mut dmx_reg = RegisteredDemuxers::new();
	23	nihav_register_all_demuxers(&mut dmx_reg);
	24	let mut rdmx_reg = RegisteredRawDemuxers::new();
	25	nihav_register_all_raw_demuxers(&mut rdmx_reg);
	26	let mut dec_reg = RegisteredDecoders::new();
	27	nihav_register_all_decoders(&mut dec_reg);
	28	let mut pkt_reg = RegisteredPacketisers::new();
	29	nihav_register_all_packetisers(&mut pkt_reg);
	30	let mut enc_reg = RegisteredEncoders::new();
	31	nihav_register_all_encoders(&mut enc_reg);
	32	enc_reg.add_encoder(NULL_ENCODER);
	33	let mut mux_reg = RegisteredMuxers::new();
	34	nihav_register_all_muxers(&mut mux_reg);
	35	mux_reg.add_muxer(NULL_MUXER);
	36	Self { dmx_reg, rdmx_reg, pkt_reg, dec_reg, enc_reg, mux_reg }
	37	}
	38	}
	39
	40	pub struct RawStreamCtx<'a> {
	41	stream: NAStreamRef,
	42	sm: StreamManager,
	43	packetiser: Box<dyn NAPacketiser + Send>,
	44	br: &'a mut ByteReader<'a>,
206dd66d	45	pts: u64,
91a15e39 KS	46	}
	47
	48	impl<'a> RawStreamCtx<'a> {
	49	fn new(stream: NAStreamRef, packetiser: Box<dyn NAPacketiser + Send>, br: &'a mut ByteReader<'a>) -> Self {
	50	let mut sm = StreamManager::new();
	51	sm.add_stream_ref(stream.clone());
206dd66d	52	Self { stream, sm, packetiser, br, pts: 0 }
91a15e39 KS	53	}
	54	}
	55
	56	pub enum DemuxerObject<'a> {
	57	None,
	58	Normal(Demuxer<'a>),
	59	Raw(RawDemuxer<'a>, Vec<Option<Box<dyn NAPacketiser + Send>>>, bool),
	60	RawStream(RawStreamCtx<'a>),
90683bc3	61	ImageSequence(ImgSeqDemuxer),
91a15e39 KS	62	}
	63
	64	impl<'a> DemuxerObject<'a> {
	65	pub fn create(br: &'a mut ByteReader<'a>, reg: &FullRegister, name: &str, ifmt: &Option<String>, is_raw: bool) -> DemuxerObject<'a> {
	66	if !is_raw {
	67	let dmx_name = if let Some(ref dname) = ifmt {
	68	dname.as_str()
	69	} else if let Some((dname, score)) = detect::detect_format(name, br) {
	70	println!("detected {} with score {:?}", dname, score);
	71	dname
	72	} else {
	73	""
	74	};
76ea2e41	75	if !dmx_name.is_empty() {
91a15e39 KS	76	println!("trying demuxer {} on {}", dmx_name, name);
	77	if let Some(dmx_fact) = reg.dmx_reg.find_demuxer(dmx_name) {
	78	br.seek(SeekFrom::Start(0)).unwrap();
	79	let dmx = create_demuxer(dmx_fact, br).unwrap();
	80	return DemuxerObject::Normal(dmx);
	81	}
	82	}
	83	if ifmt.is_some() {
	84	return DemuxerObject::None;
	85	}
76ea2e41	86	if !dmx_name.is_empty() {
91a15e39 KS	87	println!("trying raw demuxer {} on {}", dmx_name, name);
	88	if let Some(rdmx_fact) = reg.rdmx_reg.find_demuxer(dmx_name) {
	89	br.seek(SeekFrom::Start(0)).unwrap();
	90	let dmx = create_raw_demuxer(rdmx_fact, br).unwrap();
	91	let mut pkts = Vec::new();
	92	for stream in dmx.get_streams() {
	93	if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
	94	let packetiser = (pcreate)();
	95	pkts.push(Some(packetiser));
	96	} else {
	97	pkts.push(None);
	98	}
	99	}
	100	return DemuxerObject::Raw(dmx, pkts, false);
	101	}
	102	}
	103	for rdmx in reg.rdmx_reg.iter() {
	104	if rdmx.check_format(br) {
	105	println!("detected {} as {}", name, rdmx.get_name());
	106	br.seek(SeekFrom::Start(0)).unwrap();
	107	let dmx = create_raw_demuxer(*rdmx, br).unwrap();
	108	let mut pkts = Vec::new();
	109	for stream in dmx.get_streams() {
	110	if let Some(pcreate) = reg.pkt_reg.find_packetiser(stream.get_info().get_name()) {
	111	let packetiser = (pcreate)();
	112	pkts.push(Some(packetiser));
	113	} else {
	114	pkts.push(None);
	115	}
	116	}
	117	return DemuxerObject::Raw(dmx, pkts, false);
	118	}
	119	}
	120	}
	121	br.seek(SeekFrom::Start(0)).unwrap();
	122	let mut buf = vec![0; 1048576];
	123	let size = br.peek_buf(&mut buf).unwrap();
	124	let mut pname = "";
	125
	126	for pinfo in reg.pkt_reg.iter() {
	127	let mut packetiser = (pinfo.get_packetiser)();
	128	packetiser.add_data(&buf[..size]);
	129	if packetiser.parse_stream(0).is_ok() {
	130	pname = pinfo.name;
	131	break;
	132	}
	133	}
76ea2e41	134	if !pname.is_empty() {
91a15e39 KS	135	println!("found raw stream of type {} for {}", pname, name);
	136	let pcreate = reg.pkt_reg.find_packetiser(pname).unwrap();
	137	let mut packetiser = (pcreate)();
	138	packetiser.add_data(&buf[..size]);
	139	let stream = packetiser.parse_stream(0).unwrap();
	140	packetiser.reset();
	141	DemuxerObject::RawStream(RawStreamCtx::new(stream, packetiser, br))
	142	} else {
	143	DemuxerObject::None
	144	}
	145	}
90683bc3 KS	146	pub fn create_imgseq(isd: ImgSeqDemuxer) -> Self {
	147	DemuxerObject::ImageSequence(isd)
	148	}
91a15e39	149	pub fn is_none(&self) -> bool {
76ea2e41	150	matches!(*self, DemuxerObject::None)
91a15e39	151	}
5ec8115f	152	pub fn get_duration(&self) -> u64 {
91a15e39 KS	153	match *self {
	154	DemuxerObject::Normal(ref dmx) => dmx.get_duration(),
	155	DemuxerObject::Raw(ref dmx, _, _) => dmx.get_duration(),
4dd9047c KS	156	DemuxerObject::RawStream(ref ctx) => {
	157	NATimeInfo::ts_to_time(ctx.stream.duration, 1000, ctx.stream.tb_num, ctx.stream.tb_den)
	158	},
91a15e39 KS	159	_ => 0,
91a15e39 KS	160	}
5ec8115f	161	}
91a15e39 KS	162	pub fn get_num_streams(&self) -> usize {
	163	match *self {
	164	DemuxerObject::None => 0,
	165	DemuxerObject::Normal(ref dmx) => dmx.get_num_streams(),
	166	DemuxerObject::Raw(ref dmx, _, _) => dmx.get_num_streams(),
	167	DemuxerObject::RawStream(_) => 1,
90683bc3	168	DemuxerObject::ImageSequence(_) => 1,
91a15e39 KS	169	}
	170	}
	171	pub fn get_stream(&self, idx: usize) -> Option<NAStreamRef> {
	172	match *self {
	173	DemuxerObject::Normal(ref dmx) => dmx.get_stream(idx),
	174	DemuxerObject::Raw(ref dmx, _, _) => dmx.get_stream(idx),
	175	DemuxerObject::RawStream(ref ctx) if idx == 0 => Some(ctx.stream.clone()),
90683bc3	176	DemuxerObject::ImageSequence(ref ctx) if idx == 0 => Some(ctx.stream.clone()),
91a15e39 KS	177	_ => None,
	178	}
	179	}
	180	pub fn get_streams(&self) -> StreamIter {
	181	match *self {
	182	DemuxerObject::Normal(ref dmx) => dmx.get_streams(),
	183	DemuxerObject::Raw(ref dmx, _, _) => dmx.get_streams(),
	184	DemuxerObject::RawStream(ref ctx) => ctx.sm.iter(),
90683bc3	185	DemuxerObject::ImageSequence(ref ctx) => ctx.sm.iter(),
91a15e39 KS	186	_ => unreachable!(),
	187	}
	188	}
	189	pub fn get_stream_manager(&self) -> &StreamManager {
	190	match *self {
	191	DemuxerObject::Normal(ref dmx) => dmx.get_stream_manager(),
	192	DemuxerObject::Raw(ref dmx, _, _) => dmx.get_stream_manager(),
	193	DemuxerObject::RawStream(ref ctx) => &ctx.sm,
90683bc3	194	DemuxerObject::ImageSequence(ref ctx) => &ctx.sm,
91a15e39 KS	195	_ => unreachable!(),
	196	}
	197	}
	198	pub fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
	199	match *self {
	200	DemuxerObject::Normal(ref mut dmx) => dmx.get_frame(),
	201	DemuxerObject::Raw(ref mut dmx, ref mut packetisers, ref mut eof) => {
	202	loop {
	203	let mut has_some = false;
	204	for (stream, p) in dmx.get_streams().zip(packetisers.iter_mut()) {
	205	if let Some(ref mut pkts) = p {
	206	match pkts.get_packet(stream.clone()) {
	207	Ok(Some(pkt)) => return Ok(pkt),
	208	Ok(None) \| Err(DecoderError::ShortData) => {
	209	if *eof {
	210	*p = None;
	211	}
	212	},
	213	Err(err) => {
	214	println!("packetisation error {:?}", err);
	215	return Err(DemuxerError::InvalidData);
	216	}
	217	};
	218	has_some \|= p.is_some();
	219	}
	220	}
	221	if !has_some {
	222	return Err(DemuxerError::EOF);
	223	}
	224	if let Ok(data) = dmx.get_data() {
	225	let id = data.get_stream().get_id();
	226	for (i, stream) in dmx.get_streams().enumerate() {
	227	if stream.get_id() == id {
	228	if let Some(ref mut pkts) = packetisers[i] {
	229	pkts.add_data(&data.get_buffer());
	230	}
	231	break;
	232	}
	233	}
	234	} else {
	235	*eof = true;
	236	}
	237	}
	238	},
	239	DemuxerObject::RawStream(ref mut ctx) => {
	240	let mut buf = [0; 65536];
	241	loop {
	242	match ctx.packetiser.get_packet(ctx.stream.clone()) {
206dd66d KS	243	Ok(Some(mut packet)) => {
	244	if packet.get_pts().is_none() && packet.get_duration().is_some() {
	245	packet.ts.pts = Some(ctx.pts);
	246	}
	247	ctx.pts += packet.get_duration().unwrap_or(0);
	248	return Ok(packet);
	249	},
91a15e39 KS	250	Ok(None) => {},
	251	Err(DecoderError::ShortData) => {},
	252	_ => return Err(DemuxerError::InvalidData),
	253	};
	254	match ctx.br.read_buf_some(&mut buf) {
	255	Ok(size) => {
	256	ctx.packetiser.add_data(&buf[..size]);
	257	},
	258	Err(_) => {
	259	match ctx.packetiser.get_packet(ctx.stream.clone()) {
206dd66d KS	260	Ok(Some(mut packet)) => {
	261	if packet.get_pts().is_none() && packet.get_duration().is_some() {
	262	packet.ts.pts = Some(ctx.pts);
	263	}
	264	ctx.pts += packet.get_duration().unwrap_or(0);
	265	return Ok(packet);
	266	},
91a15e39 KS	267	Ok(None) \| Err(DecoderError::ShortData) => return Err(DemuxerError::EOF),
	268	_ => return Err(DemuxerError::InvalidData),
	269	};
	270	},
	271	};
	272	}
	273	},
90683bc3	274	DemuxerObject::ImageSequence(ref mut ctx) => ctx.get_frame(),
91a15e39 KS	275	_ => unreachable!(),
	276	}
	277	}
	278	pub fn seek(&mut self, seek_time: NATimePoint) -> DemuxerResult<()> {
	279	match *self {
	280	DemuxerObject::Normal(ref mut dmx) => dmx.seek(seek_time),
	281	DemuxerObject::Raw(ref mut dmx, _, _) => dmx.seek(seek_time),
90683bc3	282	DemuxerObject::ImageSequence(ref mut ctx) => ctx.seek(seek_time),
91a15e39 KS	283	_ => Err(DemuxerError::NotImplemented),
	284	}
	285	}
	286	}
	287
	288	impl<'a> NAOptionHandler for DemuxerObject<'a> {
	289	fn get_supported_options(&self) -> &[NAOptionDefinition] {
	290	match *self {
	291	DemuxerObject::Normal(ref dmx) => dmx.get_supported_options(),
	292	DemuxerObject::Raw(ref dmx, _, _) => dmx.get_supported_options(),
90683bc3	293	DemuxerObject::ImageSequence(ref ctx) => ctx.get_supported_options(),
91a15e39 KS	294	_ => &[],
	295	}
	296	}
	297	fn set_options(&mut self, options: &[NAOption]) {
	298	match *self {
	299	DemuxerObject::Normal(ref mut dmx) => dmx.set_options(options),
	300	DemuxerObject::Raw(ref mut dmx, _, _) => dmx.set_options(options),
90683bc3	301	DemuxerObject::ImageSequence(ref mut ctx) => ctx.set_options(options),
91a15e39 KS	302	_ => {},
	303	}
	304	}
	305	fn query_option_value(&self, name: &str) -> Option<NAValue> {
	306	match *self {
	307	DemuxerObject::Normal(ref dmx) => dmx.query_option_value(name),
	308	DemuxerObject::Raw(ref dmx, _, _) => dmx.query_option_value(name),
90683bc3	309	DemuxerObject::ImageSequence(ref ctx) => ctx.query_option_value(name),
91a15e39 KS	310	_ => None,
	311	}
	312	}
	313	}
	314
	315	pub fn detect_tags(br: &mut ByteReader) -> (bool, u64, Option<u64>) {
	316	let mut is_raw = false;
	317	let mut start = 0;
	318	let mut end = None;
	319
	320	// check for ID3v{2-4}
	321	let mut buf = [0; 5];
	322	br.peek_buf(&mut buf).unwrap();
	323	if &buf[0..3] == b"ID3" && buf[3] > 0 && buf[3] < 5 && buf[4] == 0 { //ID3 tag found, must be a raw stream
	324	br.read_skip(6).unwrap();
	325	let mut size = 0;
	326	for _ in 0..4 {
	327	let b = br.read_byte().unwrap();
	328	if (b & 0x80) != 0 {
	329	println!("Invalid ID3 size");
	330	break;
	331	}
	332	size = (size << 7) \| u64::from(b);
	333	}
	334	start = size + 10;
	335	is_raw = true;
	336	}
	337	// check for ID3v1
	338	br.seek(SeekFrom::End(-128)).unwrap();
	339	let off = br.tell();
	340	br.peek_buf(&mut buf[..3]).unwrap();
	341	if &buf[0..3] == b"TAG" {
	342	end = Some(off);
	343	}
	344	// check for APETAG
	345	let mut buf = [0; 8];
	346	if let Some(off) = end {
	347	br.seek(SeekFrom::Start(off - 32)).unwrap();
	348	} else {
	349	br.seek(SeekFrom::End(-32)).unwrap();
	350	}
	351	let off = br.tell();
	352	br.read_buf(&mut buf).unwrap();
	353	if &buf == b"APETAGEX" {
	354	let ver = br.read_u32le().unwrap();
	355	let size = u64::from(br.read_u32le().unwrap());
	356	let _items = br.read_u32le().unwrap();
	357	let flags = br.read_u32le().unwrap();
	358	if ver == 1000 \|\| (flags & 0x80000000) == 0 {
	359	end = Some(off - size + 32);
	360	} else {
	361	end = Some(off - size);
	362	}
	363	}
	364
	365	(is_raw, start, end)
	366	}