| 1 | use nihav_core::frame::*; |
| 2 | use nihav_core::demuxers::*; |
| 3 | use std::sync::Arc; |
| 4 | |
| 5 | #[allow(dead_code)] |
| 6 | struct IMAXDemuxer<'a> { |
| 7 | src: &'a mut ByteReader<'a>, |
| 8 | cur_frame: u64, |
| 9 | apos: u64, |
| 10 | a_id: usize, |
| 11 | v_id: usize, |
| 12 | pal: Arc<[u8; 1024]>, |
| 13 | pal_change: bool, |
| 14 | } |
| 15 | |
| 16 | impl<'a> DemuxCore<'a> for IMAXDemuxer<'a> { |
| 17 | #[allow(unused_variables)] |
| 18 | fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> { |
| 19 | let src = &mut self.src; |
| 20 | |
| 21 | let magic = src.read_tag()?; |
| 22 | validate!(&magic == b"IMAX"); |
| 23 | let nframes = u64::from(src.read_u32le()?); |
| 24 | let fps = u32::from(src.read_u16le()?); |
| 25 | let magic2 = src.read_u16le()?; |
| 26 | validate!(magic2 == 0x102); |
| 27 | let _zero = src.read_u16le()?; |
| 28 | let _max_vframe_size = src.read_u32le()?; |
| 29 | let _buffering_size = src.read_u32le()?; |
| 30 | |
| 31 | let vhdr = NAVideoInfo::new(320, 160, false, PAL8_FORMAT); |
| 32 | let vci = NACodecTypeInfo::Video(vhdr); |
| 33 | let vinfo = NACodecInfo::new("fable-imax", vci, None); |
| 34 | self.v_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, fps, nframes)).unwrap(); |
| 35 | let ahdr = NAAudioInfo::new(22050, 1, SND_U8_FORMAT, 2); |
| 36 | let ainfo = NACodecInfo::new("pcm", NACodecTypeInfo::Audio(ahdr), None); |
| 37 | self.a_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, 22050, 2)).unwrap(); |
| 38 | self.cur_frame = 0; |
| 39 | self.apos = 0; |
| 40 | Ok(()) |
| 41 | } |
| 42 | |
| 43 | #[allow(unused_variables)] |
| 44 | fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> { |
| 45 | loop { |
| 46 | let fsize = self.src.read_u32le()? as usize; |
| 47 | let ftype = self.src.read_u32le()?; |
| 48 | |
| 49 | match ftype { |
| 50 | 0xAA97 => { |
| 51 | let str = strmgr.get_stream(self.v_id).unwrap(); |
| 52 | let (tb_num, tb_den) = str.get_timebase(); |
| 53 | let ts = NATimeInfo::new(Some(self.cur_frame), None, None, tb_num, tb_den); |
| 54 | self.cur_frame += 1; |
| 55 | let mut pkt = self.src.read_packet(str, ts, true, fsize)?; |
| 56 | pkt.add_side_data(NASideData::Palette(self.pal_change, self.pal.clone())); |
| 57 | self.pal_change = false; |
| 58 | return Ok(pkt); |
| 59 | }, |
| 60 | 0xAA98 => { |
| 61 | validate!(fsize == 768); |
| 62 | let mut pal = [0u8; 1024]; |
| 63 | for chunk in pal.chunks_mut(4) { |
| 64 | let r = self.src.read_byte()?; |
| 65 | let g = self.src.read_byte()?; |
| 66 | let b = self.src.read_byte()?; |
| 67 | chunk[0] = (r << 2) | (r >> 4); |
| 68 | chunk[1] = (g << 2) | (g >> 4); |
| 69 | chunk[2] = (b << 2) | (b >> 4); |
| 70 | } |
| 71 | self.pal = Arc::new(pal); |
| 72 | self.pal_change = true; |
| 73 | }, |
| 74 | 0xAA99 => { |
| 75 | let str = strmgr.get_stream(self.a_id).unwrap(); |
| 76 | let (tb_num, tb_den) = str.get_timebase(); |
| 77 | let ts = NATimeInfo::new(Some(self.apos), None, None, tb_num, tb_den); |
| 78 | self.apos += fsize as u64; |
| 79 | return self.src.read_packet(str, ts, true, fsize); |
| 80 | }, |
| 81 | 0xAAFF => return Err(DemuxerError::EOF), |
| 82 | _ => return Err(DemuxerError::InvalidData), |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | fn seek(&mut self, _time: NATimePoint, _seek_index: &SeekIndex) -> DemuxerResult<()> { |
| 88 | Err(DemuxerError::NotPossible) |
| 89 | } |
| 90 | fn get_duration(&self) -> u64 { 0 } |
| 91 | } |
| 92 | impl<'a> NAOptionHandler for IMAXDemuxer<'a> { |
| 93 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } |
| 94 | fn set_options(&mut self, _options: &[NAOption]) { } |
| 95 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } |
| 96 | } |
| 97 | impl<'a> IMAXDemuxer<'a> { |
| 98 | fn new(io: &'a mut ByteReader<'a>) -> Self { |
| 99 | IMAXDemuxer { |
| 100 | src: io, |
| 101 | cur_frame: 0, |
| 102 | apos: 0, |
| 103 | a_id: 0, |
| 104 | v_id: 0, |
| 105 | pal: Arc::new([0; 1024]), |
| 106 | pal_change: false, |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | pub struct IMAXDemuxerCreator { } |
| 112 | |
| 113 | impl DemuxerCreator for IMAXDemuxerCreator { |
| 114 | fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> { |
| 115 | Box::new(IMAXDemuxer::new(br)) |
| 116 | } |
| 117 | fn get_name(&self) -> &'static str { "fable-imax" } |
| 118 | } |
| 119 | |
| 120 | #[cfg(test)] |
| 121 | mod test { |
| 122 | use super::*; |
| 123 | use std::fs::File; |
| 124 | |
| 125 | #[test] |
| 126 | fn test_imax_demux() { |
| 127 | // sample from Fable game |
| 128 | let mut file = File::open("assets/Game/present.imx").unwrap(); |
| 129 | let mut fr = FileReader::new_read(&mut file); |
| 130 | let mut br = ByteReader::new(&mut fr); |
| 131 | let mut dmx = IMAXDemuxer::new(&mut br); |
| 132 | let mut sm = StreamManager::new(); |
| 133 | let mut si = SeekIndex::new(); |
| 134 | dmx.open(&mut sm, &mut si).unwrap(); |
| 135 | loop { |
| 136 | let pktres = dmx.get_frame(&mut sm); |
| 137 | if let Err(e) = pktres { |
| 138 | if (e as i32) == (DemuxerError::EOF as i32) { break; } |
| 139 | panic!("error"); |
| 140 | } |
| 141 | let pkt = pktres.unwrap(); |
| 142 | println!("Got {}", pkt); |
| 143 | } |
| 144 | } |
| 145 | } |