From 55d3e99fc4841c63564e337e5b7ec40559f1d19a Mon Sep 17 00:00:00 2001 From: Kostya Shishkov Date: Wed, 17 Nov 2021 14:06:48 +0100 Subject: [PATCH] add utility code for supporting various kinds of input --- src/demux.rs | 265 +++++++++++++++++++++++++++++++++++++++++++++++++++ src/main.rs | 54 +++++------ 2 files changed, 291 insertions(+), 28 deletions(-) create mode 100644 src/demux.rs diff --git a/src/demux.rs b/src/demux.rs new file mode 100644 index 0000000..4ef1f15 --- /dev/null +++ b/src/demux.rs @@ -0,0 +1,265 @@ +use std::io::SeekFrom; +use nihav_core::codecs::*; +use nihav_core::demuxers::*; +use nihav_registry::detect; +use nihav_core::io::byteio::ByteReader; +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 enum DemuxerObject<'a> { + None, + Normal(Demuxer<'a>), + Raw(RawDemuxer<'a>, Vec>>, bool), + RawStream(Box, NAStreamRef, &'a mut ByteReader<'a>), +} + +impl<'a> DemuxerObject<'a> { + pub fn create(br: &'a mut ByteReader<'a>, reg: &FullRegister, name: &str, is_raw: bool) -> DemuxerObject<'a> { + if !is_raw { + let res = detect::detect_format(name, br); + let (dmx_name, _) = res.unwrap_or(("", detect::DetectionScore::No)); + if dmx_name != "" { + 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 dmx_name != "" { + 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 != "" { + 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(packetiser, stream, br) + } else { + DemuxerObject::None + } + } + pub fn is_none(&self) -> bool { + match *self { + DemuxerObject::None => true, + _ => false, + } + } + pub fn get_duration(&self) -> u64 { + match *self { + DemuxerObject::Normal(ref dmx) => dmx.get_duration(), + DemuxerObject::Raw(ref dmx, _, _) => dmx.get_duration(), + _ => 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 { + match *self { + DemuxerObject::Normal(ref dmx) => dmx.get_stream(idx), + DemuxerObject::Raw(ref dmx, _, _) => dmx.get_stream(idx), + DemuxerObject::RawStream(_, ref stream, _) if idx == 0 => Some(stream.clone()), + _ => None, + } + } + pub fn get_frame(&mut self) -> DemuxerResult { + 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 pkt, ref stream, ref mut br) => { + let mut buf = [0; 1048576]; + loop { + match pkt.get_packet(stream.clone()) { + Ok(Some(packet)) => return Ok(packet), + Ok(None) => {}, + Err(DecoderError::ShortData) => {}, + _ => return Err(DemuxerError::InvalidData), + }; + match br.read_buf_some(&mut buf) { + Ok(size) => { + pkt.add_data(&buf[..size]); + }, + Err(_) => { + match pkt.get_packet(stream.clone()) { + Ok(Some(packet)) => return Ok(packet), + Ok(None) | Err(DecoderError::ShortData) => return Err(DemuxerError::EOF), + _ => return Err(DemuxerError::InvalidData), + }; + }, + }; + } + }, + _ => 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), + _ => Err(DemuxerError::NotImplemented), + } + } +} + +pub fn detect_tags(br: &mut ByteReader) -> (bool, u64, Option) { + 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) +} diff --git a/src/main.rs b/src/main.rs index 6d29d46..8280799 100644 --- a/src/main.rs +++ b/src/main.rs @@ -3,18 +3,17 @@ extern crate nihav_codec_support; extern crate nihav_registry; extern crate nihav_allstuff; -use std::io::{SeekFrom, Write, BufReader}; +use std::io::{Write, BufReader}; use std::fs::File; use std::path::Path; -use nihav_core::io::byteio::{FileReader, ByteReader}; use nihav_core::frame::*; use nihav_core::codecs::*; use nihav_core::demuxers::*; use nihav_codec_support::imgwrite::*; -use nihav_registry::detect; -use nihav_allstuff::*; use std::env; +mod demux; +use demux::*; mod wavwriter; use crate::wavwriter::WavWriter; @@ -165,29 +164,28 @@ fn main() { let path = Path::new(name); let file = File::open(path).unwrap(); - let mut file = BufReader::new(file); - let dmx_fact; - let mut fr = FileReader::new_read(&mut file); + let file = BufReader::new(file); + let mut fr = FileReader::new_read(file); let mut br = ByteReader::new(&mut fr); - let res = detect::detect_format(name, &mut br); - if res.is_none() { - println!("cannot detect format for {}", name); + let (is_raw, start, end) = detect_tags(&mut br); + + let mut nfr: Box; + if start != 0 || end.is_some() { + println!(" limiting range to {:X}-{:X}", start, end.unwrap_or(0)); + let file = fr.finish(); + nfr = Box::new(BoundedFileReader::new_read(file, start, end).unwrap()); + } else { + nfr = Box::new(fr); + } + let mut br = ByteReader::new(nfr.as_mut()); + let full_reg = FullRegister::new(); + let mut demuxer = DemuxerObject::create(&mut br, &full_reg, name, is_raw); + if demuxer.is_none() { + println!("No demuxer found!"); return; } - let (dmx_name, _) = res.unwrap(); -println!("trying demuxer {} on {}", dmx_name, name); - - let mut dmx_reg = RegisteredDemuxers::new(); - nihav_register_all_demuxers(&mut dmx_reg); - let mut dec_reg = RegisteredDecoders::new(); - nihav_register_all_decoders(&mut dec_reg); - - dmx_fact = dmx_reg.find_demuxer(dmx_name).unwrap(); - br.seek(SeekFrom::Start(0)).unwrap(); - let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap(); - if seek_time != NATimePoint::None { - let ret = dmx.seek(seek_time); + let ret = demuxer.seek(seek_time); if ret.is_err() { println!(" seek error {:?}", ret.err().unwrap()); } @@ -197,17 +195,17 @@ println!(" seek error {:?}", ret.err().unwrap()); let mut sids: Vec = Vec::new(); let mut writers: Vec = Vec::new(); let dec_opts = [NAOption{name: FRAME_SKIP_OPTION, value: NAValue::String(smode.to_string())}]; - let duration = dmx.get_duration(); + let duration = demuxer.get_duration(); if duration != 0 { let s = duration / 1000; let m = s / 60; let h = m / 60; println!(" total duration {}:{:02}:{:02}.{}", h, m % 60, s % 60, (duration / 100) % 10); } - for i in 0..dmx.get_num_streams() { - let s = dmx.get_stream(i).unwrap(); + for i in 0..demuxer.get_num_streams() { + let s = demuxer.get_stream(i).unwrap(); let info = s.get_info(); - let decfunc = dec_reg.find_decoder(info.get_name()); + let decfunc = full_reg.dec_reg.find_decoder(info.get_name()); println!("stream {} - {} {}", i, s, info.get_name()); let str_id = s.get_id(); let mut has_out = false; @@ -262,7 +260,7 @@ println!("stream {} - {} {}", i, s, info.get_name()); let mut frmnum = 0; loop { - let pktres = dmx.get_frame(); + let pktres = demuxer.get_frame(); if let Err(e) = pktres { if e == DemuxerError::EOF { break; } } -- 2.39.5