+++ /dev/null
-use std::io::SeekFrom;
-use nihav_core::codecs::*;
-use nihav_core::demuxers::*;
-use nihav_registry::detect;
-use nihav_core::io::byteio::ByteIO;
-use nihav_allstuff::*;
-
-pub struct FullRegister {
- pub dmx_reg: RegisteredDemuxers,
- pub rdmx_reg: RegisteredRawDemuxers,
- pub pkt_reg: RegisteredPacketisers,
- pub dec_reg: RegisteredDecoders,
-}
-
-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);
- Self { dmx_reg, rdmx_reg, pkt_reg, dec_reg }
- }
-}
-
-pub struct RawStreamCtx<'a> {
- stream: NAStreamRef,
- pkt: Box<dyn NAPacketiser + Send>,
- br: &'a mut dyn ByteIO,
- pts: u64,
- seek: SeekIndex,
-}
-
-impl<'a> RawStreamCtx<'a> {
- fn new(stream: NAStreamRef, packetiser: Box<dyn NAPacketiser + Send>, br: &'a mut dyn ByteIO) -> Self {
- let mut seek = SeekIndex::new();
- seek.add_stream(0);
- Self { stream, pkt: packetiser, br, pts: 0, seek }
- }
- fn account_for_packet(&mut self, packet: &mut NAPacket) {
- let pos = self.br.tell() - (self.pkt.bytes_left() as u64);
- if packet.get_pts().is_none() && packet.get_duration().is_some() {
- packet.ts.pts = Some(self.pts);
- }
- if packet.is_keyframe() {
- let pts = packet.get_pts().unwrap_or(self.pts);
- let time = NATimeInfo::rescale_ts(pts, self.stream.tb_num, self.stream.tb_den, 1, 1000);
- let in_range = if let Some(last) = self.seek.seek_info[0].entries.last() {
- last.pts >= pts
- } else {
- false
- };
- if !in_range {
- self.seek.add_entry(0, SeekEntry { time, pts, pos });
- }
- }
- self.pts += packet.get_duration().unwrap_or(0);
- }
- fn get_frame(&mut self) -> DemuxerResult<NAPacket> {
- let mut buf = [0; 1048576];
- loop {
- match self.pkt.get_packet(self.stream.clone()) {
- Ok(Some(mut packet)) => {
- self.account_for_packet(&mut packet);
- return Ok(packet);
- },
- Ok(None) => {},
- Err(DecoderError::ShortData) => {},
- _ => return Err(DemuxerError::InvalidData),
- };
- match self.br.read_buf_some(&mut buf) {
- Ok(size) => {
- self.pkt.add_data(&buf[..size]);
- },
- Err(_) => {
- match self.pkt.get_packet(self.stream.clone()) {
- Ok(Some(mut packet)) => {
- self.account_for_packet(&mut packet);
- return Ok(packet);
- },
- Ok(None) | Err(DecoderError::ShortData) => return Err(DemuxerError::EOF),
- _ => return Err(DemuxerError::InvalidData),
- };
- },
- };
- }
- }
-}
-
-pub enum DemuxerObject<'a> {
- None,
- Normal(Demuxer<'a>),
- Raw(RawDemuxer<'a>, Vec<Option<Box<dyn NAPacketiser + Send>>>, bool),
- RawStream(RawStreamCtx<'a>),
-}
-
-impl<'a> DemuxerObject<'a> {
- pub fn create(br: &'a mut dyn ByteIO, reg: &FullRegister, name: &str, force_dmx: Option<&str>, is_raw: bool, opts: &[NAOption]) -> DemuxerObject<'a> {
- if !is_raw {
- let res = detect::detect_format(name, br);
- if let Some(dmx_name) = force_dmx {
- println!("forcing 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_with_options(dmx_fact, br, opts).unwrap();
- return DemuxerObject::Normal(dmx);
- } else {
- return DemuxerObject::None
- }
- }
- let (dmx_name, _) = res.unwrap_or(("", detect::DetectionScore::No));
- 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_with_options(dmx_fact, br, opts).unwrap();
- return DemuxerObject::Normal(dmx);
- }
- }
- 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_with_options(rdmx_fact, br, opts).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 mut packetiser = (pcreate)();
- packetiser.attach_stream(stream);
- 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_with_options(*rdmx, br, opts).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.read_buf_some(&mut buf).unwrap();
- br.seek(SeekFrom::Start(0)).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 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::rescale_ts(ctx.stream.duration, ctx.stream.tb_num, ctx.stream.tb_den, 1, 1000)
- },
- _ => 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,
- }
- }
- 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()),
- _ => None,
- }
- }
- 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) => 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::RawStream(ref mut ctx) => {
- if seek_time == NATimePoint::None {
- return Err(DemuxerError::SeekError);
- }
- if let Some(last) = ctx.seek.seek_info[0].entries.last() {
- let in_index = match seek_time {
- NATimePoint::None => unreachable!(),
- NATimePoint::PTS(pts) => last.pts >= pts,
- NATimePoint::Milliseconds(ms) => last.time >= ms,
- };
- if in_index {
- if let Some(result) = ctx.seek.find_pos(seek_time) {
- ctx.br.seek(SeekFrom::Start(result.pos))?;
- ctx.pts = result.pts;
- ctx.pkt.reset();
- return Ok(());
- }
- }
- }
- if let Some(last) = ctx.seek.seek_info[0].entries.last() {
- ctx.br.seek(SeekFrom::Start(last.pos))?;
- ctx.pts = last.pts;
- ctx.pkt.reset();
- }
- let mut key_pts = 0;
- while let Ok(pkt) = ctx.get_frame() {
- if !pkt.ts.less_than(seek_time) && !pkt.ts.equal(seek_time) {
- break;
- }
- if pkt.is_keyframe() {
- key_pts = pkt.get_pts().unwrap_or(0);
- }
- }
- let result = ctx.seek.find_pos(NATimePoint::PTS(key_pts)).unwrap();
- ctx.br.seek(SeekFrom::Start(result.pos))?;
- ctx.pts = result.pts;
- ctx.pkt.reset();
- Ok(())
- },
- _ => Err(DemuxerError::NotImplemented),
- }
- }
-}
-
-pub fn detect_tags(br: &mut dyn ByteIO) -> (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];
- loop {
- if br.peek_buf(&mut buf).is_err() {
- break;
- }
- 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;
- br.read_skip(size as usize).unwrap();
- while let Ok(0) = br.read_byte() {
- start += 1;
- }
- br.seek(SeekFrom::Start(start)).unwrap();
- is_raw = true;
- } else {
- break;
- }
- }
- // 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 Lyrics v2
- let mut sig = [0; 9];
- br.seek(SeekFrom::End(-128 - 9)).unwrap();
- br.peek_buf(&mut sig).unwrap();
- if &sig == b"LYRICS200" {
- br.seek(SeekFrom::Current(-6)).unwrap();
- let mut sizestr = [0; 6];
- br.peek_buf(&mut sizestr).unwrap();
- if let Ok(sstr) = std::str::from_utf8(&sizestr) {
- if let Ok(size) = sstr.parse::<u64>() {
- end = Some(br.tell() - size);
- }
- }
- }
- }
- // 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);
- }
- }
- // check for MusicMatch tag
- let ret = if let Some(endpos) = end {
- br.seek(SeekFrom::Start(endpos - 0x30))
- } else {
- br.seek(SeekFrom::End(-0x30))
- };
- if ret.is_ok() && br.tell() > (0x2000 - 0x30) {
- let mut buf = [0; 19];
- br.peek_buf(&mut buf).unwrap();
- if &buf == b"Brava Software Inc." {
- br.seek(SeekFrom::Current(-20)).unwrap();
- let mut mm_start = u64::from(br.read_u32le().unwrap());
- if mm_start > 4 && mm_start + 0x2000 <= br.tell() {
- let diff = (br.tell() - mm_start) & 3;
- if diff != 0 {
- mm_start -= 4 - diff;
- }
- end = Some(mm_start);
- }
- }
- }
-
- (is_raw, start, end)
-}
projects / nihav-tool.git / commitdiff