+use nihav_core::codecs::*;
+use nihav_core::io::byteio::*;
+use nihav_core::io::bitreader::*;
+
+const HEADER_SIZE: usize = 0x2F;
+
+const MV_2BIT: [(i8, i8); 4] = [(-1, 0), (-1, -1), (1, -1), (0, -2)];
+const MV_4BIT: [(i8, i8); 16] = [
+ (-2, -3), ( 2, -3), (-1, -4), ( 1, -4),
+ (-1, -2), ( 1, -2), ( 0, -3), ( 0, -4),
+ (-2, 0), (-2, -1), ( 1, -1), (-2, -2),
+ ( 2, -2), (-1, -3), ( 1, -3), ( 0, -5)
+];
+
+const BPP: usize = 4;
+
+struct ArxelVideoDecoder {
+ info: NACodecInfoRef,
+ tiles: [u8; 65536],
+}
+
+impl ArxelVideoDecoder {
+ fn new() -> Self {
+ Self {
+ info: NACodecInfoRef::default(),
+ tiles: [0; 65536],
+ }
+ }
+}
+
+const RGBA_FORMAT: NAPixelFormaton = NAPixelFormaton {
+ model: ColorModel::RGB(RGBSubmodel::RGB), components: 4,
+ comp_info: [
+ Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 2, next_elem: 4 }),
+ Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 1, next_elem: 4 }),
+ Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 0, next_elem: 4 }),
+ Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 8, shift: 0, comp_offs: 3, next_elem: 4 }),
+ None ],
+ elem_size: 4, be: false, alpha: true, palette: false };
+
+impl NADecoder for ArxelVideoDecoder {
+ fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
+ if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
+ let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(vinfo.get_width(), vinfo.get_height(), true, RGBA_FORMAT));
+ self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
+
+ Ok(())
+ } else {
+ Err(DecoderError::InvalidData)
+ }
+ }
+ fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
+ let src = pkt.get_buffer();
+ validate!(src.len() > HEADER_SIZE);
+
+ let mut mr = MemoryReader::new_read(&src);
+ let mut br = ByteReader::new(&mut mr);
+
+ let size = br.read_u32le()? as usize;
+ validate!(src.len() >= size + HEADER_SIZE);
+ let part2_off = br.read_u32le()? as u64;
+ validate!(part2_off > 0 && part2_off < (size as u64));
+ let num_tiles = br.read_u16le()? as usize;
+ validate!(num_tiles > 0 && num_tiles < 4096);
+ let tile_size = br.read_u16le()? as usize;
+ let width = br.read_u32le()? as usize;
+ let height = br.read_u32le()? as usize;
+
+ let vinfo = self.info.get_properties().get_video_info().unwrap();
+ validate!(width == vinfo.get_width());
+ validate!(height == vinfo.get_height());
+
+ br.seek(SeekFrom::Start(part2_off + (HEADER_SIZE as u64)))?;
+ match tile_size {
+ 2 => {
+ return Err(DecoderError::NotImplemented);
+ },
+ 4 => {
+ br.read_buf(&mut self.tiles[..16])?;
+ let off = br.tell() as usize;
+ let mut bir = BitReader::new(&src[off..], BitReaderMode::BE);
+ for tile in 1..num_tiles {
+ for i in 0..16 {
+ self.tiles[tile * 16 + i] = self.tiles[tile * 16 + i - 16];
+ }
+ let bits = bir.read(3)? as u8 + 1;
+ validate!(bits < 8);
+ for el in self.tiles[tile * 16..][..16].iter_mut() {
+ let mut delta = bir.read(bits)? as i16;
+ if delta != 0 && bir.read_bool()? {
+ delta = -delta;
+ }
+ *el = (i16::from(*el) + delta) as u8;
+ }
+ }
+ },
+ _ => {
+ validate!(tile_size > 0);
+ br.read_buf(&mut self.tiles[..tile_size])?;
+ },
+ };
+
+ let bufinfo = alloc_video_buffer(vinfo, 0)?;
+ let bufo = bufinfo.get_vbuf();
+ let mut buf = bufo.unwrap();
+ let stride = buf.get_stride(0);
+ let data = buf.get_data_mut().unwrap();
+ let dst = data.as_mut_slice();
+
+ let mut br = BitReader::new(&src[HEADER_SIZE..], BitReaderMode::BE);
+ let tile_w = 4;
+ let tsize = tile_w * BPP;
+ let idx_bits = if num_tiles < 0x400 { 10 } else if num_tiles < 0x800 { 11 } else { 12 };
+ for y in (0..height).step_by(2) {
+ for x in (0..width).step_by(tile_w) {
+ let dst_pos = x * BPP + y * stride;
+ if !br.read_bool()? {
+ let idx = br.read(idx_bits)? as usize;
+ validate!(idx < num_tiles);
+ dst[dst_pos..][..tsize].copy_from_slice(&self.tiles[idx * tsize..][..tsize]);
+ } else {
+ let (mv_x, mv_y) = if br.read_bool()? {
+ (0, -1)
+ } else if br.read_bool()? {
+ MV_2BIT[br.read(2)? as usize]
+ } else {
+ MV_4BIT[br.read(4)? as usize]
+ };
+
+ let isrc = (dst_pos as isize) + isize::from(mv_x) * (tsize as isize) + isize::from(mv_y) * ((stride * 2) as isize);
+ validate!(isrc >= 0);
+ let src_pos = isrc as usize;
+ validate!(src_pos + tsize <= dst.len());
+ let (src, dst) = dst.split_at_mut(dst_pos);
+ dst[..tsize].copy_from_slice(&src[src_pos..][..tsize]);
+ }
+ }
+ // double lines
+ let lines = &mut dst[y * stride..];
+ let (src, dst) = lines.split_at_mut(stride);
+ dst[..stride].copy_from_slice(src);
+ }
+
+ let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
+ frm.set_keyframe(true);
+ frm.set_frame_type(FrameType::I);
+ Ok(frm.into_ref())
+ }
+ fn flush(&mut self) {
+ }
+}
+
+impl NAOptionHandler for ArxelVideoDecoder {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+ fn set_options(&mut self, _options: &[NAOption]) { }
+ fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+
+
+pub fn get_decoder() -> Box<dyn NADecoder + Send> {
+ Box::new(ArxelVideoDecoder::new())
+}
+
+#[cfg(test)]
+mod test {
+ use nihav_core::codecs::RegisteredDecoders;
+ use nihav_core::demuxers::RegisteredDemuxers;
+ use nihav_codec_support::test::dec_video::*;
+ use crate::game_register_all_decoders;
+ use crate::game_register_all_demuxers;
+ // sample from the Ring game
+ #[test]
+ fn test_arxel_video() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ game_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ game_register_all_decoders(&mut dec_reg);
+
+ test_decoding("arxel-cnm", "arxel-video", "assets/Game/logo.cnm", Some(10), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5([0xcf12f83a, 0xfdce1ed2, 0x2d183394, 0xa265f164]));
+ }
+}
projects / nihav.git / commitdiff