nframes: usize,
chunks: Vec<u8>,
- keyframe: bool,
+ keyframe: bool,
cur_frame: usize,
frme_end: u64,
asize: u64,
}
-fn parse_iact(br: &mut ByteReader, end: u64, arate: &mut u32, abits: &mut u8, chans: &mut u8) -> DemuxerResult<()> {
+fn parse_iact(br: &mut ByteReader, end: u64, arate: &mut u32, abits: &mut u8, chans: &mut u8, mcmp: bool) -> DemuxerResult<()> {
+ if !mcmp {
br.read_skip(14)?;
+ }
let tag = br.read_tag()?;
if &tag != b"iMUS" {
+ if mcmp {
+ return Err(DemuxerError::InvalidData);
+ }
*arate = 22050;
*abits = 16;
*chans = 2;
validate!(&tag == b"FRME");
size = u64::from(src.read_u32be()?);
}
-
+
let end = src.tell() + size;
validate!(end <= self.size + 8); // some NUTs feature slightly incorrect total size
let opcode = src.read_u16le()?;
let flags = src.read_u16le()?;
if (opcode == 8) && (flags == 0x2E) {
- if parse_iact(src, end, &mut arate, &mut abits, &mut chans).is_ok() {
+ if parse_iact(src, end, &mut arate, &mut abits, &mut chans, false).is_ok() {
aname = "smush-iact";
}
validate!(src.tell() <= end);
nsamples = read_u32be(&buf[8..])?;
}
}
-
+
let (tb_num, tb_den) = stream.get_timebase();
let mut ts = NATimeInfo::new(None, None, None, tb_num, tb_den);
if nsamples != 0 {
fn get_name(&self) -> &'static str { "smush" }
}
+
+struct MCMPDemuxer<'a> {
+ src: &'a mut ByteReader<'a>,
+ cur_frame: usize,
+
+ offsets: Vec<u64>,
+ sizes: Vec<u32>,
+ samples: Vec<u32>,
+ pts: Vec<u64>,
+}
+
+impl<'a> MCMPDemuxer<'a> {
+ fn new(io: &'a mut ByteReader<'a>) -> Self {
+ MCMPDemuxer {
+ src: io,
+ cur_frame: 0,
+
+ offsets: Vec::new(),
+ sizes: Vec::new(),
+ samples: Vec::new(),
+ pts: Vec::new(),
+ }
+ }
+}
+
+impl<'a> DemuxCore<'a> for MCMPDemuxer<'a> {
+ fn open(&mut self, strmgr: &mut StreamManager, seek_index: &mut SeekIndex) -> DemuxerResult<()> {
+ let magic = self.src.read_tag()?;
+ validate!(&magic == b"MCMP");
+ let nframes = self.src.read_u16be()? as usize;
+ validate!(nframes > 1);
+ let cmp = self.src.read_byte()?;
+ let size1 = self.src.read_u32be()?;
+ let hdr_size = self.src.read_u32be()?;
+ validate!(cmp == 0 && size1 == hdr_size);
+
+ let size = (nframes - 1) as usize;
+ self.offsets = Vec::with_capacity(size);
+ self.sizes = Vec::with_capacity(size);
+ self.samples = Vec::with_capacity(size);
+ self.pts = Vec::with_capacity(size);
+
+ let mut start = 0;
+ let mut pts = 0;
+ for _ in 1..nframes {
+ let compr = self.src.read_byte()?;
+ if compr != 1 {
+ return Err(DemuxerError::NotImplemented);
+ }
+ let samples = self.src.read_u32be()? / 2;
+ let size = self.src.read_u32be()?;
+ self.offsets.push(start);
+ self.sizes.push(size);
+ self.samples.push(samples);
+ self.pts.push(pts);
+
+ start += u64::from(size);
+ pts += u64::from(samples);
+ }
+
+ let codecs_desc_size = self.src.read_u16be()? as usize;
+ // todo check it's NULL+VIMA
+ self.src.read_skip(codecs_desc_size)?;
+ let data_start = self.src.tell() + u64::from(hdr_size);
+ let mut arate = 0;
+ let mut abits = 0;
+ let mut chans = 0;
+ parse_iact(&mut self.src, data_start, &mut arate, &mut abits, &mut chans, true)?;
+ if chans == 2 {
+ for (samp, pts) in self.samples.iter_mut().zip(self.pts.iter_mut()) {
+ validate!((*samp & 1) == 0);
+ *samp >>= 1;
+ *pts >>= 1;
+ }
+ pts >>= 1;
+ }
+
+ let ahdr = NAAudioInfo::new(arate, chans, SND_S16_FORMAT, 0);
+ let ainfo = NACodecInfo::new("smush-vima", NACodecTypeInfo::Audio(ahdr), None);
+ if strmgr.add_stream(NAStream::new(StreamType::Audio, 0, ainfo, 1, arate, pts)).is_none() {
+ return Err(DemuxerError::MemoryError);
+ }
+
+ seek_index.mode = SeekIndexMode::Present;
+ seek_index.add_stream(0);
+ let index = seek_index.get_stream_index(0).unwrap();
+ for (i, (off, &pts)) in self.offsets.iter_mut().zip(self.pts.iter()).enumerate() {
+ *off += data_start;
+ index.add_entry(SeekEntry { time: pts * 1000 / u64::from(arate), pts, pos: i as u64 });
+ }
+ index.filled = true;
+
+ self.cur_frame = 0;
+ Ok(())
+ }
+
+ fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
+ let idx = self.cur_frame;
+ if idx >= self.offsets.len() { return Err(DemuxerError::EOF); }
+ self.src.seek(SeekFrom::Start(self.offsets[idx]))?;
+ let mut buf = vec![0; self.sizes[idx] as usize + 4];
+ write_u32be(&mut buf, self.samples[idx])?;
+ self.src.read_buf(&mut buf[4..])?;
+
+ let stream = strmgr.get_stream(0).unwrap();
+ let (tb_num, tb_den) = stream.get_timebase();
+ let ts = NATimeInfo::new(Some(self.pts[idx]), None, None, tb_num, tb_den);
+
+ self.cur_frame += 1;
+
+ Ok(NAPacket::new(stream, ts, true, buf))
+ }
+
+ fn seek(&mut self, time: NATimePoint, seek_index: &SeekIndex) -> DemuxerResult<()> {
+ if let Some(ret) = seek_index.find_pos(time) {
+ self.cur_frame = ret.pos as usize;
+ Ok(())
+ } else {
+ Err(DemuxerError::SeekError)
+ }
+ }
+ fn get_duration(&self) -> u64 { 0 }
+}
+
+impl<'a> NAOptionHandler for MCMPDemuxer<'a> {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+ fn set_options(&mut self, _options: &[NAOption]) { }
+ fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+
+pub struct MCMPDemuxerCreator { }
+
+impl DemuxerCreator for MCMPDemuxerCreator {
+ fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
+ Box::new(MCMPDemuxer::new(br))
+ }
+ fn get_name(&self) -> &'static str { "smush-mcmp" }
+}
+
+
#[cfg(test)]
mod test {
use super::*;
println!("Got {}", pkt);
}
}
+ #[test]
+ fn test_mcmp_demux() {
+ // sample from Grim Fandango
+ let mut file = File::open("assets/Game/smush/1104 - Lupe.IMC").unwrap();
+ let mut fr = FileReader::new_read(&mut file);
+ let mut br = ByteReader::new(&mut fr);
+ let mut dmx = MCMPDemuxer::new(&mut br);
+ let mut sm = StreamManager::new();
+ let mut si = SeekIndex::new();
+ dmx.open(&mut sm, &mut si).unwrap();
+ loop {
+ let pktres = dmx.get_frame(&mut sm);
+ if let Err(e) = pktres {
+ if (e as i32) == (DemuxerError::EOF as i32) { break; }
+ panic!("error");
+ }
+ let pkt = pktres.unwrap();
+ println!("Got {}", pkt);
+ }
+ }
}
projects / nihav.git / commitdiff