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|
use nihav_core::codecs::*;
use nihav_core::io::bitreader::*;
use nihav_core::io::codebook::*;
use nihav_core::io::intcode::*;
use nihav_codec_support::codecs::{MV, ZERO_MV};
use nihav_codec_support::codecs::blockdsp::*;
use super::svq1data::*;
#[derive(Clone,Copy,Debug,PartialEq)]
enum SVQ1FrameType {
I,
P,
Drop,
}
#[derive(Clone,Copy,Debug,PartialEq)]
enum BlockType {
Intra,
Skip,
OneMV,
FourMV,
}
#[derive(Clone,Copy,Debug,PartialEq)]
#[allow(clippy::enum_variant_names)]
enum BlockDiv {
Div16x16,
Div16x8,
Div8x8,
Div8x4,
Div4x4,
Div4x2,
}
impl BlockDiv {
fn is_final(self) -> bool { self == BlockDiv::Div4x2 }
fn split(self) -> (Self, usize, usize) {
match self {
BlockDiv::Div16x16 => (BlockDiv::Div16x8, 0, 8),
BlockDiv::Div16x8 => (BlockDiv::Div8x8, 8, 0),
BlockDiv::Div8x8 => (BlockDiv::Div8x4, 0, 4),
BlockDiv::Div8x4 => (BlockDiv::Div4x4, 4, 0),
BlockDiv::Div4x4 => (BlockDiv::Div4x2, 0, 2),
BlockDiv::Div4x2 => unreachable!(),
}
}
fn get_size(self) -> (usize, usize) {
match self {
BlockDiv::Div16x16 => (16, 16),
BlockDiv::Div16x8 => (16, 8),
BlockDiv::Div8x8 => ( 8, 8),
BlockDiv::Div8x4 => ( 8, 4),
BlockDiv::Div4x4 => ( 4, 4),
BlockDiv::Div4x2 => ( 4, 2),
}
}
fn get_level(self) -> usize {
match self {
BlockDiv::Div16x16 => 5,
BlockDiv::Div16x8 => 4,
BlockDiv::Div8x8 => 3,
BlockDiv::Div8x4 => 2,
BlockDiv::Div4x4 => 1,
BlockDiv::Div4x2 => 0,
}
}
}
const BLOCK_TYPES: [BlockType; 4] = [ BlockType::Skip, BlockType::OneMV, BlockType::FourMV, BlockType::Intra ];
impl SVQ1FrameType {
fn is_ref(self) -> bool {
self != SVQ1FrameType::Drop
}
fn is_intra(self) -> bool {
self == SVQ1FrameType::I
}
fn to_frame_type(self) -> FrameType {
match self {
SVQ1FrameType::I => FrameType::I,
SVQ1FrameType::P => FrameType::P,
SVQ1FrameType::Drop => FrameType::P,
}
}
fn from_id(id: u32) -> DecoderResult<Self> {
match id {
0 => Ok(SVQ1FrameType::I),
1 => Ok(SVQ1FrameType::P),
2 => Ok(SVQ1FrameType::Drop),
_ => Err(DecoderError::InvalidData),
}
}
}
struct SVQ1DescReader {
table: &'static [[u8; 2]],
bias: i16,
}
impl CodebookDescReader<i16> for SVQ1DescReader {
fn bits(&mut self, idx: usize) -> u8 { self.table[idx][1] }
fn code(&mut self, idx: usize) -> u32 { u32::from(self.table[idx][0]) }
fn sym(&mut self, idx: usize) -> i16 { (idx as i16) + self.bias }
fn len(&mut self) -> usize { self.table.len() }
}
struct SVQ1InterMeanDescReader {}
impl CodebookDescReader<i16> for SVQ1InterMeanDescReader {
fn bits(&mut self, idx: usize) -> u8 { SVQ_INTER_MEAN_CODES[idx][1] as u8 }
fn code(&mut self, idx: usize) -> u32 { u32::from(SVQ_INTER_MEAN_CODES[idx][0]) }
fn sym(&mut self, idx: usize) -> i16 { (idx as i16) - 256 }
fn len(&mut self) -> usize { SVQ_INTER_MEAN_CODES.len() }
}
struct SVQ1Decoder {
info: NACodecInfoRef,
width: usize,
height: usize,
ref_frm: Option<NAVideoBufferRef<u8>>,
mvs: Vec<MV>,
intra_stages_cb: Vec<Codebook<i16>>,
inter_stages_cb: Vec<Codebook<i16>>,
intra_mean_cb: Codebook<i16>,
inter_mean_cb: Codebook<i16>,
mv_cb: Codebook<i16>,
div_list: [(BlockDiv, usize); 64],
}
impl SVQ1Decoder {
#[allow(clippy::needless_range_loop)]
fn new() -> Self {
let mut intra_stages_cb = Vec::with_capacity(6);
for i in 0..6 {
let mut cbd = SVQ1DescReader { table: &SVQ_INTRA_STAGE_CODES[i], bias: -1 };
let cb = Codebook::new(&mut cbd, CodebookMode::MSB).unwrap();
intra_stages_cb.push(cb);
}
let mut inter_stages_cb = Vec::with_capacity(6);
for i in 0..6 {
let mut cbd = SVQ1DescReader { table: &SVQ_INTER_STAGE_CODES[i], bias: -1 };
let cb = Codebook::new(&mut cbd, CodebookMode::MSB).unwrap();
inter_stages_cb.push(cb);
}
let mut cbd = SVQ1DescReader { table: &SVQ_INTRA_MEAN_CODES, bias: 0 };
let intra_mean_cb = Codebook::new(&mut cbd, CodebookMode::MSB).unwrap();
let mut cbd = SVQ1InterMeanDescReader {};
let inter_mean_cb = Codebook::new(&mut cbd, CodebookMode::MSB).unwrap();
let mut cbd = SVQ1DescReader { table: &SVQ_MV_CODES, bias: 0 };
let mv_cb = Codebook::new(&mut cbd, CodebookMode::MSB).unwrap();
Self {
info: NACodecInfoRef::default(),
width: 0,
height: 0,
ref_frm: None,
mvs: Vec::new(),
intra_stages_cb, inter_stages_cb, intra_mean_cb, inter_mean_cb, mv_cb,
div_list: [(BlockDiv::Div16x16, 0); 64],
}
}
fn read_mv(&self, br: &mut BitReader) -> DecoderResult<MV> {
let mut x = br.read_cb(&self.mv_cb)?;
if x > 0 && br.read_bool()? {
x = -x;
}
let mut y = br.read_cb(&self.mv_cb)?;
if y > 0 && br.read_bool()? {
y = -y;
}
Ok(MV { x, y })
}
#[allow(clippy::too_many_arguments)]
fn pred_mv(&self, x: usize, y: usize, w: usize, mv_idx: usize, mvstride: usize, blk_idx: usize, diff: MV) -> MV {
let a_mv = if x > 0 || (blk_idx & 1) != 0 { self.mvs[mv_idx - 1] } else { ZERO_MV };
let b_mv = if y > 0 || (blk_idx & 2) != 0 { self.mvs[mv_idx - mvstride] } else { a_mv };
let c_mv = match blk_idx {
0 => if y > 0 && x + 16 < w { self.mvs[mv_idx + 2 - mvstride] } else { ZERO_MV },
1 => if y > 0 && x + 16 < w { self.mvs[mv_idx + 1 - mvstride] } else { ZERO_MV },
2 => self.mvs[mv_idx + 1 - mvstride],
_ => self.mvs[mv_idx - 1 - mvstride],
};
let mut new_mv = diff + MV::pred(a_mv, b_mv, c_mv);
if new_mv.x >= 32 { new_mv.x -= 64; }
else if new_mv.x <= -32 { new_mv.x += 64; }
if new_mv.y >= 32 { new_mv.y -= 64; }
else if new_mv.y <= -32 { new_mv.y += 64; }
new_mv
}
fn decode_intra_block(&mut self, br: &mut BitReader, dst: &mut [u8], dstride: usize) -> DecoderResult<()> {
self.div_list[0] = (BlockDiv::Div16x16, 0);
let mut idx = 0;
let mut end = 1;
while idx < end {
let (div, off) = self.div_list[idx];
if !div.is_final() && br.read_bool()? {
let (ndiv, xoff, yoff) = div.split();
self.div_list[end] = (ndiv, off);
end += 1;
self.div_list[end] = (ndiv, off + xoff + yoff * dstride);
end += 1;
} else {
let level = div.get_level();
let stages = br.read_cb(&self.intra_stages_cb[level])?;
if level > 3 {
validate!(stages <= 0);
}
let (w, h) = div.get_size();
let fill = if stages < 0 { 0 } else { br.read_cb(&self.intra_mean_cb)? };
if stages > 0 {
let mut blk = [fill; 256];
for stage in 0..(stages as usize) {
let idx = br.read(4)? as usize;
let src: &[i8] = match div {
BlockDiv::Div8x8 => &SVQ_INTRA_CB_8X8[stage * 16 + idx],
BlockDiv::Div8x4 => &SVQ_INTRA_CB_8X4[stage * 16 + idx],
BlockDiv::Div4x4 => &SVQ_INTRA_CB_4X4[stage * 16 + idx],
BlockDiv::Div4x2 => &SVQ_INTRA_CB_4X2[stage * 16 + idx],
_ => unreachable!(),
};
for (dst, src) in blk.chunks_exact_mut(w).zip(src.chunks_exact(w)) {
for (diff, &src) in dst.iter_mut().zip(src.iter()) {
*diff += i16::from(src);
}
}
}
for (dline, sline) in dst[off..].chunks_mut(dstride).zip(blk.chunks_exact(w)).take(h) {
for (dst, &src) in dline.iter_mut().zip(sline.iter()) {
*dst = src.max(0).min(255) as u8;
}
}
} else {
for line in dst[off..].chunks_mut(dstride).take(h) {
for el in line.iter_mut().take(w) {
*el = fill as u8;
}
}
}
}
idx += 1;
}
Ok(())
}
fn decode_inter_block(&mut self, br: &mut BitReader, dst: &mut [u8], dstride: usize) -> DecoderResult<()> {
self.div_list[0] = (BlockDiv::Div16x16, 0);
let mut idx = 0;
let mut end = 1;
while idx < end {
let (div, off) = self.div_list[idx];
if !div.is_final() && br.read_bool()? {
let (ndiv, xoff, yoff) = div.split();
self.div_list[end] = (ndiv, off);
end += 1;
self.div_list[end] = (ndiv, off + xoff + yoff * dstride);
end += 1;
} else {
let level = div.get_level();
let stages = br.read_cb(&self.inter_stages_cb[level])?;
if level > 3 {
validate!(stages <= 0);
}
let (w, h) = div.get_size();
let fill = if stages < 0 { 0 } else { br.read_cb(&self.inter_mean_cb)? };
if fill != 0 || stages != 0 {
let mut blk = [0; 256];
for (dline, sline) in blk.chunks_exact_mut(w).zip(dst[off..].chunks(dstride)).take(h) {
for (dst, &src) in dline.iter_mut().zip(sline.iter()) {
*dst = i16::from(src);
}
}
if fill != 0 {
for el in blk.iter_mut().take(w * h) {
*el += fill;
}
}
if stages > 0 {
for stage in 0..(stages as usize) {
let idx = br.read(4)? as usize;
let src: &[i8] = match div {
BlockDiv::Div8x8 => &SVQ_INTER_CB_8X8[stage * 16 + idx],
BlockDiv::Div8x4 => &SVQ_INTER_CB_8X4[stage * 16 + idx],
BlockDiv::Div4x4 => &SVQ_INTER_CB_4X4[stage * 16 + idx],
BlockDiv::Div4x2 => &SVQ_INTER_CB_4X2[stage * 16 + idx],
_ => unreachable!(),
};
for (line, src) in blk.chunks_exact_mut(w).zip(src.chunks_exact(w)) {
for (dst, &src) in line.iter_mut().zip(src.iter()) {
*dst += i16::from(src);
}
}
}
}
for (dline, sline) in dst[off..].chunks_mut(dstride).zip(blk.chunks_exact(w)).take(h) {
for (dst, &src) in dline.iter_mut().zip(sline.iter()) {
*dst = src.max(0).min(255) as u8;
}
}
}
}
idx += 1;
}
Ok(())
}
fn decode_plane(&mut self, br: &mut BitReader, dframe: &mut NASimpleVideoFrame<u8>, plane: usize, is_intra: bool) -> DecoderResult<()> {
let (w, h) = if plane == 0 {
((self.width + 15) & !15, (self.height + 15) & !15)
} else {
((self.width / 4 + 15) & !15, (self.height / 4 + 15) & !15)
};
let mvstride = w / 8;
self.mvs.clear();
self.mvs.resize(mvstride * (h / 8), ZERO_MV);
let mut mv_idx = 0;
let mut doff = dframe.offset[plane];
let dstride = dframe.stride[plane];
for y in (0..h).step_by(16) {
for x in (0..w).step_by(16) {
let block_type = if is_intra {
BlockType::Intra
} else {
let idx = br.read_code(UintCodeType::LimitedZeroes(3))? as usize;
BLOCK_TYPES[idx]
};
match block_type {
BlockType::Intra => {
self.decode_intra_block(br, &mut dframe.data[doff + x..], dstride)?;
},
BlockType::Skip => {
if let Some(ref rfrm) = self.ref_frm {
let sstride = rfrm.get_stride(plane);
let soff = rfrm.get_offset(plane) + y * sstride;
let src = &rfrm.get_data()[soff + x..];
let dst = &mut dframe.data[doff + x..];
for (dline, sline) in dst.chunks_mut(dstride).zip(src.chunks(sstride)).take(16) {
dline[..16].copy_from_slice(&sline[..16]);
}
}
},
BlockType::OneMV => {
let mv = self.read_mv(br)?;
let new_mv = self.pred_mv(x, y, w, mv_idx + x / 8, mvstride, 0, mv);
self.mvs[mv_idx + x / 8] = new_mv;
self.mvs[mv_idx + x / 8 + 1] = new_mv;
self.mvs[mv_idx + mvstride + x / 8] = new_mv;
self.mvs[mv_idx + mvstride + x / 8 + 1] = new_mv;
if let Some(ref rfrm) = self.ref_frm {
let mode = ((new_mv.x & 1) + (new_mv.y & 1) * 2) as usize;
copy_block(dframe, rfrm.clone(), plane, x, y, new_mv.x >> 1, new_mv.y >> 1, 16, 16, 0, 1, mode, HALFPEL_INTERP_FUNCS);
}
self.decode_inter_block(br, &mut dframe.data[doff + x..], dstride)?;
},
BlockType::FourMV => {
for i in 0..4 {
let mv = self.read_mv(br)?;
let cur_idx = mv_idx + x / 8 + (i & 1) + (i >> 1) * mvstride;
let new_mv = self.pred_mv(x, y, w, cur_idx, mvstride, i, mv);
self.mvs[cur_idx] = new_mv;
if let Some(ref rfrm) = self.ref_frm {
let mode = ((new_mv.x & 1) + (new_mv.y & 1) * 2) as usize;
copy_block(dframe, rfrm.clone(), plane, x + (i & 1) * 8, y + (i >> 1) * 8, new_mv.x >> 1, new_mv.y >> 1, 8, 8, 0, 1, mode, HALFPEL_INTERP_FUNCS);
}
}
self.decode_inter_block(br, &mut dframe.data[doff + x..], dstride)?;
},
};
}
doff += dstride * 16;
mv_idx += mvstride * 2;
}
Ok(())
}
}
impl NADecoder for SVQ1Decoder {
fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
self.width = vinfo.get_width();
self.height = vinfo.get_height();
let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(self.width, self.height, false, YUV410_FORMAT));
self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
supp.pool_u8.set_dec_bufs(2);
supp.pool_u8.prealloc_video(NAVideoInfo::new(vinfo.get_width(), vinfo.get_height(), false, YUV410_FORMAT), 6)?;
self.mvs = Vec::with_capacity((self.width + 15) / 4 * ((self.height + 15) / 4));
Ok(())
} else {
Err(DecoderError::InvalidData)
}
}
#[allow(clippy::collapsible_if)]
fn decode(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
let src = pkt.get_buffer();
validate!(src.len() >= 2);
let mut br = BitReader::new(&src, BitReaderMode::BE);
let fcode = br.read(22)?;
validate!((fcode & 0x60) != 0);
let _pts = br.read(8)?;
let ptype = br.read(2)?;
let ftype = SVQ1FrameType::from_id(ptype)?;
let mut frm_data = Vec::new();
if fcode != 0x20 {
frm_data.extend_from_slice(&src);
for i in 0..4 {
let a = frm_data[i * 4 + 4];
let b = frm_data[i * 4 + 5];
let c = frm_data[i * 4 + 6];
let d = frm_data[i * 4 + 7];
frm_data[i * 4 + 4] = c ^ frm_data[32 - i * 4];
frm_data[i * 4 + 5] = d ^ frm_data[33 - i * 4];
frm_data[i * 4 + 6] = a ^ frm_data[34 - i * 4];
frm_data[i * 4 + 7] = b ^ frm_data[35 - i * 4];
}
br = BitReader::new(&frm_data, BitReaderMode::BE);
br.skip(32)?;
}
if ftype.is_intra() {
if fcode == 0x50 || fcode == 0x60 {
let _checksum = br.read(16)? as u16;
// let crc = calc_crc(frm_data.as_slice(), 0);
// validate!(crc == _checksum);
}
if fcode == 0x40 || fcode == 0x60 || fcode == 0x70 {
let str_len = br.read(8)? as usize;
for _ in 0..str_len {
br.skip(8)?;
}
}
br.skip(2)?;
br.skip(2)?;
br.skip(1)?;
let size_id = br.read(3)? as usize;
let (w, h) = if size_id < FRAME_SIZES.len() {
FRAME_SIZES[size_id]
} else {
let w = br.read(12)? as usize;
let h = br.read(12)? as usize;
validate!(w >= 16 && h >= 16);
(w, h)
};
if self.width != w || self.height != h {
self.flush();
self.width = w;
self.height = h;
let vinfo = NAVideoInfo::new(self.width, self.height, false, YUV410_FORMAT);
supp.pool_u8.reset();
supp.pool_u8.prealloc_video(vinfo, 6)?;
let nmb = ((w + 15) / 4) * ((h + 15) / 4);
if self.mvs.capacity() < nmb {
let add = nmb - self.mvs.capacity();
self.mvs.reserve(add);
}
}
} else {
if self.ref_frm.is_none() {
return Err(DecoderError::MissingReference);
}
}
if br.read_bool()? {
let _pkt_crc = br.read_bool()?;
let _comp_crc = br.read_bool()?;
let marker = br.read(2)?;
validate!(marker == 0);
}
if br.read_bool()? {
br.skip(1)?;
br.skip(4)?;
br.skip(1)?;
br.skip(2)?;
while br.read_bool()? { }
}
let ret = supp.pool_u8.get_free();
if ret.is_none() {
return Err(DecoderError::AllocError);
}
let mut buf = ret.unwrap();
let mut dframe = NASimpleVideoFrame::from_video_buf(&mut buf).unwrap();
self.decode_plane(&mut br, &mut dframe, 0, ftype.is_intra())?;
self.decode_plane(&mut br, &mut dframe, 1, ftype.is_intra())?;
self.decode_plane(&mut br, &mut dframe, 2, ftype.is_intra())?;
if ftype.is_ref() {
self.ref_frm = Some(buf.clone());
}
let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), NABufferType::Video(buf));
frm.set_keyframe(ftype.is_intra());
frm.set_frame_type(ftype.to_frame_type());
Ok(frm.into_ref())
}
fn flush(&mut self) {
self.ref_frm = None;
}
}
impl NAOptionHandler for SVQ1Decoder {
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(SVQ1Decoder::new())
}
#[cfg(test)]
mod test {
use nihav_core::codecs::RegisteredDecoders;
use nihav_core::demuxers::RegisteredDemuxers;
use nihav_codec_support::test::dec_video::*;
use crate::qt_register_all_decoders;
use nihav_commonfmt::generic_register_all_demuxers;
#[test]
fn test_svq1() {
let mut dmx_reg = RegisteredDemuxers::new();
generic_register_all_demuxers(&mut dmx_reg);
let mut dec_reg = RegisteredDecoders::new();
qt_register_all_decoders(&mut dec_reg);
// sample: https://samples.mplayerhq.hu/A-codecs/ima-adpcm/adpcm-bug.mov
test_decoding("mov", "sorenson-video", "assets/QT/adpcm-bug.mov", Some(6), &dmx_reg, &dec_reg,
ExpectedTestResult::MD5Frames(vec![
[0x90c5eb74, 0xcb942d7d, 0x84c5e444, 0x7f1ba2c2],
[0x650ae6f7, 0x9a0a6ec2, 0x0d907064, 0xb4c37321],
[0xa04e865b, 0xdbd65920, 0x4703d7dd, 0x962707a1],
[0xe89c98bc, 0x356791bb, 0xfb6f7302, 0x2250ef05],
[0x282ef2a7, 0x235541b4, 0x55055d99, 0x1a8d0b29],
[0x79c60bab, 0xe5a11a50, 0x5f9e800b, 0x12bce70d],
[0xe9a08fb7, 0x3b482a8b, 0x50e1560e, 0xd6d70287]]));
}
}
const FRAME_SIZES: [(usize, usize); 7] = [
(160, 120), (128, 96), (176, 144), (352, 288),
(704, 576), (240, 180), (320, 240)
];
/*const CRC_TABLE: [u16; 256] = [ //CCITT 16-bit CRC?
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
];
fn calc_crc(src: &[u8], start: u16) -> u16 {
let mut crc = start;
for byte in src.iter() {
crc = CRC_TABLE[(*byte ^ ((crc >> 8) as u8)) as usize] ^ (crc << 8);
}
crc
}*/
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