--- /dev/null
+use nihav_core::codecs::*;
+use nihav_core::io::bitwriter::*;
+use nihav_core::io::intcode::*;
+use nihav_codec_support::dsp::lpc::*;
+
+fn to_unsigned(val: i32) -> u32 {
+ if val >= 0 {
+ val as u32 * 2
+ } else {
+ -val as u32 * 2 - 1
+ }
+}
+
+fn calc_header_crc(hdr: &mut [u8]) {
+ let mut crc = 0u8;
+ let len = hdr.len() - 1;
+ for &byte in hdr[..len].iter() {
+ crc = CRC8_TABLE[(crc ^ byte) as usize];
+ }
+ hdr[len] = crc;
+}
+
+fn calc_frame_crc(buf: &mut Vec<u8>) {
+ let mut crc = 0;
+ for &byte in buf.iter() {
+ crc = (crc << 8) ^ CRC16_TABLE[(((crc >> 8) as u8) ^ byte) as usize];
+ }
+ buf.push((crc >> 8) as u8);
+ buf.push(crc as u8);
+}
+
+#[derive(Clone,Copy,Debug,PartialEq)]
+#[allow(dead_code)]
+enum StereoMode {
+ Normal,
+ LeftSide,
+ SideRight,
+ MidSide,
+}
+
+fn find_stereo_mode(samp1: &[i32], samp2: &[i32]) -> StereoMode {
+ let mut sums = [0; 3];
+ for (&l, &r) in samp1.iter().zip(samp2.iter()) {
+ sums[0] += l.abs() + r.abs();
+ sums[1] += l.abs() + (l - r).abs();
+ let b = l - r;
+ let a = r + (b >> 1);
+ sums[2] += a.abs() + b.abs();
+ }
+ let mut best_idx = 0;
+ let mut best_val = sums[0];
+ for (i, &val) in sums.iter().enumerate() {
+ if val <= best_val {
+ best_val = val;
+ best_idx = i;
+ }
+ }
+ match best_idx {
+ 0 => StereoMode::Normal,
+ 1 => StereoMode::LeftSide,
+ _ => StereoMode::MidSide,
+ }
+}
+
+fn apply_stereo(samp1: &mut [i32], samp2: &mut [i32], smode: StereoMode) {
+ match smode {
+ StereoMode::Normal => {},
+ StereoMode::LeftSide => {
+ for (l, r) in samp1.iter_mut().zip(samp2.iter_mut()) {
+ *r = *l - *r;
+ }
+ },
+ StereoMode::SideRight => {
+ for (l, r) in samp1.iter_mut().zip(samp2.iter_mut()) {
+ *l -= *r;
+ }
+ },
+ StereoMode::MidSide => {
+ for (l, r) in samp1.iter_mut().zip(samp2.iter_mut()) {
+ let b = *l - *r;
+ *l = *r + (b >> 1);
+ *r = b;
+ }
+ },
+ };
+}
+
+fn apply_fixed_filter(dst: &mut [u32], src: &[i32], order: i8) {
+ match order {
+ -1 => {
+ let mut last = src[0];
+ for (dst, &cur) in dst[1..].iter_mut().zip(src[1..].iter()) {
+ *dst = to_unsigned(cur - last);
+ last = cur;
+ }
+ },
+ -2 => {
+ let mut last0 = src[1];
+ let mut last1 = src[0];
+ for (dst, &cur) in dst[2..].iter_mut().zip(src[2..].iter()) {
+ *dst = to_unsigned(cur - 2 * last0 + last1);
+ last1 = last0;
+ last0 = cur;
+ }
+ },
+ -3 => {
+ let mut last0 = src[2];
+ let mut last1 = src[1];
+ let mut last2 = src[0];
+ for (dst, &cur) in dst[3..].iter_mut().zip(src[3..].iter()) {
+ *dst = to_unsigned(cur - 3 * last0 + 3 * last1 - last2);
+ last2 = last1;
+ last1 = last0;
+ last0 = cur;
+ }
+ },
+ -4 => {
+ let mut last0 = src[3];
+ let mut last1 = src[2];
+ let mut last2 = src[1];
+ let mut last3 = src[0];
+ for (dst, &cur) in dst[4..].iter_mut().zip(src[4..].iter()) {
+ *dst = to_unsigned(cur - 4 * last0 + 6 * last1 - 4 * last2 + last3);
+ last3 = last2;
+ last2 = last1;
+ last1 = last0;
+ last0 = cur;
+ }
+ },
+ _ => unreachable!(),
+ };
+}
+
+fn apply_lpc(dst: &mut [u32], src: &[i32], filter: &[i32], shift: u8) {
+ let order = filter.len();
+
+ for (i, dst) in dst[order..src.len()].iter_mut().enumerate() {
+ let sum = src[i..].iter().zip(filter.iter()).fold(0, |acc, (&c, &f)| acc + i64::from(c) * i64::from(f));
+ *dst = to_unsigned(src[i + order] - ((sum >> shift) as i32));
+ }
+}
+
+fn encode_residual(bw: &mut BitWriter, src: &[u32]) {
+ let sum = src.iter().fold(0, |acc, &x| acc + x) / (src.len() as u32);
+
+ let k = (31 - sum.max(1).leading_zeros()) as u8;
+ if k < 16 {
+ bw.write(0, 2);
+ bw.write(0, 4); // 1 partition
+ bw.write(u32::from(k), 4);
+ } else {
+ bw.write(1, 2);
+ bw.write(0, 4); // 1 partition
+ bw.write(u32::from(k), 5);
+ }
+ for &samp in src.iter() {
+ bw.write_code(UintCodeType::Rice(k), samp);
+ }
+}
+
+#[derive(Default)]
+struct FLACEncoder {
+ stream: Option<NAStreamRef>,
+ channels: usize,
+ srate: u32,
+ block_len: usize,
+ order: i8,
+ samples: Vec<Vec<i32>>,
+ flush: bool,
+ cur_pos: usize,
+ tmp: Vec<u32>,
+ ffilter: [f64; 32],
+ ifilter: [i32; 32],
+}
+
+fn nsamples_code(nsamp: usize) -> u8 {
+ match nsamp {
+ 192 => 1,
+ 576 => 2,
+ 1152 => 3,
+ 2304 => 4,
+ 4608 => 5,
+ 256 => 8,
+ 512 => 9,
+ 1024 => 10,
+ 2048 => 11,
+ 4096 => 12,
+ 8192 => 13,
+ 16384 => 14,
+ 32768 => 15,
+ 0..=255 => 6,
+ _ => 7,
+ }
+}
+
+fn encode_nsamples_esc(bw: &mut BitWriter, nsamp: usize, code: u8) {
+ match code {
+ 6 => {
+ bw.write((nsamp - 1) as u32, 8);
+ },
+ 7 => {
+ bw.write((nsamp - 1) as u32, 16);
+ },
+ _ => {},
+ };
+}
+
+fn write_utf8(bw: &mut BitWriter, val: usize) {
+ let val = val as u32;
+ let lz = 32 - val.leading_zeros();
+ match lz {
+ 0..=7 => {
+ bw.write(val, 8);
+ },
+ 8..=11 => {
+ bw.write(0xC0 | (val >> 6), 8);
+ bw.write(0x80 | (val & 0x3F), 8);
+ },
+ 12..=16 => {
+ bw.write(0xE0 | ( val >> 12), 8);
+ bw.write(0x80 | ((val >> 6) & 0x3F), 8);
+ bw.write(0x80 | ( val & 0x3F), 8);
+ },
+ 17..=21 => {
+ bw.write(0xF0 | ( val >> 18), 8);
+ bw.write(0x80 | ((val >> 12) & 0x3F), 8);
+ bw.write(0x80 | ((val >> 6) & 0x3F), 8);
+ bw.write(0x80 | ( val & 0x3F), 8);
+ },
+ 22..=26 => {
+ bw.write(0xF8 | ( val >> 24), 8);
+ bw.write(0x80 | ((val >> 18) & 0x3F), 8);
+ bw.write(0x80 | ((val >> 12) & 0x3F), 8);
+ bw.write(0x80 | ((val >> 6) & 0x3F), 8);
+ bw.write(0x80 | ( val & 0x3F), 8);
+ },
+ _ => {
+ bw.write(0xFC | ( val >> 30), 8);
+ bw.write(0x80 | ((val >> 24) & 0x3F), 8);
+ bw.write(0x80 | ((val >> 18) & 0x3F), 8);
+ bw.write(0x80 | ((val >> 12) & 0x3F), 8);
+ bw.write(0x80 | ((val >> 6) & 0x3F), 8);
+ bw.write(0x80 | ( val & 0x3F), 8);
+ },
+ };
+}
+
+const DEFAULT_BLOCK_LEN: usize = 4096;
+
+impl FLACEncoder {
+ fn new() -> Self { Self::default() }
+ fn encode_packet(&mut self) -> EncoderResult<NAPacket> {
+ if self.samples[0].is_empty() || (!self.flush && self.samples[0].len() < self.block_len) {
+ return Err(EncoderError::TryAgain);
+ }
+
+ let nsamples = self.samples[0].len().min(self.block_len);
+
+ let mut bw = BitWriter::new(Vec::with_capacity(1024), BitWriterMode::BE);
+ bw.write(0x3FFE, 14);
+ bw.write0(); // reserved
+ bw.write1(); // blocking strategy - variable
+ let scode = nsamples_code(nsamples);
+ bw.write(u32::from(scode), 4);
+ bw.write(0x0, 4); // sample rate - read the stream info
+ let smode = if self.channels == 2 {
+ let (l, r) = self.samples.split_at_mut(1);
+ let smode = find_stereo_mode(&l[0][..nsamples], &r[0][..nsamples]);
+ apply_stereo(&mut l[0][..nsamples], &mut r[0][..nsamples], smode);
+ smode
+ } else {
+ StereoMode::Normal
+ };
+ let chan_idx = match smode {
+ StereoMode::Normal => (self.channels as u32) - 1,
+ StereoMode::LeftSide => 8,
+ StereoMode::SideRight => 9,
+ StereoMode::MidSide => 10,
+ };
+ bw.write(chan_idx, 4);
+ bw.write(0x4, 3); // 16 bits per sample
+ bw.write0(); // reserved
+ write_utf8(&mut bw, self.cur_pos);
+ encode_nsamples_esc(&mut bw, nsamples, scode);
+ // optional bits per sample
+ bw.write(0x00, 8); // header CRC placeholder
+ let hdr_crc_pos = bw.tell() >> 3;
+ for chan in 0..self.channels {
+ let samp_bits = match (smode, chan) {
+ (StereoMode::LeftSide, 1) |
+ (StereoMode::SideRight, 0) |
+ (StereoMode::MidSide, 1) => 16 + 1,
+ _ => 16,
+ };
+ self.encode_channel(&mut bw, chan, nsamples, samp_bits);
+ }
+
+ let mut dbuf = bw.end();
+ calc_header_crc(&mut dbuf[..hdr_crc_pos]);
+ calc_frame_crc(&mut dbuf);
+ let ts = NATimeInfo::new(None, None, Some(nsamples as u64), 1, self.srate);
+
+ for samp in self.samples.iter_mut() {
+ samp.drain(..nsamples);
+ }
+ self.cur_pos += nsamples;
+
+ Ok(NAPacket::new(self.stream.clone().unwrap(), ts, true, dbuf))
+ }
+ fn encode_channel(&mut self, bw: &mut BitWriter, chan: usize, nsamples: usize, samp_bits: u8) {
+ let samp = &self.samples[chan][..nsamples];
+
+ let s0 = samp[0];
+ let mut same = true;
+ for &s in samp[1..].iter() {
+ if s != s0 {
+ same = false;
+ break;
+ }
+ }
+
+ bw.write0();
+ if !same {
+ match self.order {
+ 0 => {
+ bw.write(1, 6);
+ bw.write0(); // no wasted bits
+ for &el in samp.iter() {
+ bw.write_s(i32::from(el), samp_bits);
+ }
+ },
+ -1 | -2 | -3 | -4 => {
+ let order = -self.order as usize;
+
+ apply_fixed_filter(&mut self.tmp, samp, self.order);
+
+ bw.write(8 | (order as u32), 6);
+ bw.write0(); // no wasted bits
+ for &el in samp[..order].iter() {
+ bw.write_s(i32::from(el), samp_bits);
+ }
+ encode_residual(bw, &self.tmp[order..nsamples]);
+ },
+ _ => {
+ let order = self.order as usize;
+ calc_lpc_filter(samp, &mut self.ffilter[..order]);
+
+ let mut filter_prec = 12;
+ let scale = f64::from(1 << filter_prec);
+
+ let maxval = (self.ffilter[..order].iter().fold(0.0, |acc: f64, &el| acc.max(el.abs())) * scale) as i32;
+ let mut mask = 0;
+ for (dst, &src) in self.ifilter[..order].iter_mut().zip(&self.ffilter) {
+ *dst = (src * scale) as i32;
+ mask |= *dst;
+ }
+ let mut zbits = mask.trailing_zeros();
+ let mut filter_bits = 33 - maxval.leading_zeros() - zbits;
+ if filter_bits > 15 {
+ let sub = filter_bits - 15;
+ zbits += sub;
+ filter_bits = 15;
+ }
+ filter_prec -= zbits;
+ if zbits > 0 {
+ for el in self.ifilter[..order].iter_mut() {
+ *el >>= zbits;
+ }
+ }
+
+ apply_lpc(&mut self.tmp, samp, &self.ifilter[..order], filter_prec as u8);
+
+ bw.write(0x20 | ((order - 1) as u32), 6);
+ bw.write0(); // no wasted bits
+ for &el in samp[..order].iter() {
+ bw.write_s(i32::from(el), samp_bits);
+ }
+ bw.write(filter_bits - 1, 4);
+ bw.write(filter_prec, 5);
+ for &coef in self.ifilter[..order].iter().rev() {
+ bw.write_s(coef, filter_bits as u8);
+ }
+ encode_residual(bw, &self.tmp[order..nsamples]);
+ },
+ };
+ } else {
+ bw.write(0, 6);
+ bw.write0(); // no wasted bits
+ bw.write(u32::from(s0 as u16), samp_bits);
+ }
+ }
+}
+
+impl NAEncoder for FLACEncoder {
+ fn negotiate_format(&self, encinfo: &EncodeParameters) -> EncoderResult<EncodeParameters> {
+ match encinfo.format {
+ NACodecTypeInfo::None => {
+ let mut ofmt = EncodeParameters::default();
+ ofmt.format = NACodecTypeInfo::Audio(NAAudioInfo::new(0, 1, SND_S16_FORMAT, DEFAULT_BLOCK_LEN));
+ Ok(ofmt)
+ },
+ NACodecTypeInfo::Video(_) => Err(EncoderError::FormatError),
+ NACodecTypeInfo::Audio(ainfo) => {
+ let mut outinfo = ainfo;
+ outinfo.channels = outinfo.channels.max(1).min(8);
+ if outinfo.format != SND_S16P_FORMAT && outinfo.format != SND_S16_FORMAT {
+ outinfo.format = SND_S16P_FORMAT;
+ }
+ if outinfo.block_len == 0 {
+ outinfo.block_len = DEFAULT_BLOCK_LEN;
+ }
+ outinfo.block_len = outinfo.block_len.max(2).min(65535);
+ let mut ofmt = *encinfo;
+ ofmt.format = NACodecTypeInfo::Audio(outinfo);
+ Ok(ofmt)
+ }
+ }
+ }
+ fn init(&mut self, stream_id: u32, encinfo: EncodeParameters) -> EncoderResult<NAStreamRef> {
+ match encinfo.format {
+ NACodecTypeInfo::None => Err(EncoderError::FormatError),
+ NACodecTypeInfo::Video(_) => Err(EncoderError::FormatError),
+ NACodecTypeInfo::Audio(ainfo) => {
+ if ainfo.format != SND_S16P_FORMAT && ainfo.format != SND_S16_FORMAT {
+ return Err(EncoderError::FormatError);
+ }
+ if ainfo.block_len == 0 {
+ self.block_len = DEFAULT_BLOCK_LEN;
+ } else {
+ if ainfo.block_len < 2 || ainfo.block_len > 65535 {
+ return Err(EncoderError::FormatError);
+ }
+ self.block_len = ainfo.block_len;
+ }
+ if ainfo.channels == 0 || ainfo.channels > 8 {
+ return Err(EncoderError::FormatError);
+ }
+ self.channels = ainfo.channels as usize;
+
+ let soniton = SND_S16P_FORMAT;
+ let out_ainfo = NAAudioInfo::new(ainfo.sample_rate, ainfo.channels, soniton, self.block_len);
+ let info = NACodecInfo::new("flac", NACodecTypeInfo::Audio(out_ainfo), None);
+ let mut stream = NAStream::new(StreamType::Audio, stream_id, info, 1, ainfo.sample_rate, 0);
+ stream.set_num(stream_id as usize);
+ let stream = stream.into_ref();
+
+ self.stream = Some(stream.clone());
+ self.srate = ainfo.sample_rate;
+
+ self.samples.clear();
+ for _ in 0..self.channels {
+ self.samples.push(Vec::with_capacity(DEFAULT_BLOCK_LEN));
+ }
+ self.tmp.resize(self.block_len, 0);
+
+ Ok(stream)
+ },
+ }
+ }
+ fn encode(&mut self, frm: &NAFrame) -> EncoderResult<()> {
+ let buf = frm.get_buffer();
+ if let Some(ref abuf) = buf.get_abuf_i16() {
+ let src = abuf.get_data();
+ let len = abuf.get_length();
+ if abuf.get_step() == 1 {
+ let astride = abuf.get_stride();
+ let mut off = 0;
+ for dst in self.samples.iter_mut() {
+ dst.reserve(len);
+ for &samp in src[off..][..len].iter() {
+ dst.push(i32::from(samp));
+ }
+ off += astride;
+ }
+ } else {
+ for dst in self.samples.iter_mut() {
+ dst.reserve(len);
+ }
+ let mut src = src.iter();
+ for _ in 0..len {
+ for dst in self.samples.iter_mut() {
+ dst.push(i32::from(*src.next().unwrap()));
+ }
+ }
+ }
+ Ok(())
+ } else {
+ Err(EncoderError::InvalidParameters)
+ }
+ }
+ fn get_packet(&mut self) -> EncoderResult<Option<NAPacket>> {
+ if let Ok(pkt) = self.encode_packet() {
+ Ok(Some(pkt))
+ } else {
+ Ok(None)
+ }
+ }
+ fn flush(&mut self) -> EncoderResult<()> {
+ self.flush = true;
+ Ok(())
+ }
+}
+
+const ENCODER_OPTS: &[NAOptionDefinition] = &[
+ NAOptionDefinition {
+ name: "order", description: "LPC order",
+ opt_type: NAOptionDefinitionType::Int(Some(-4), Some(32)) },
+ NAOptionDefinition {
+ name: "block_size", description: "block size",
+ opt_type: NAOptionDefinitionType::Int(Some(2), Some(65535)) },
+];
+
+impl NAOptionHandler for FLACEncoder {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { ENCODER_OPTS }
+ fn set_options(&mut self, options: &[NAOption]) {
+ for option in options.iter() {
+ for opt_def in ENCODER_OPTS.iter() {
+ if opt_def.check(option).is_ok() {
+ match option.name {
+ "order" => {
+ if let NAValue::Int(val) = option.value {
+ self.order = val as i8;
+ }
+ },
+ "block_size" => {
+ if let NAValue::Int(val) = option.value {
+ self.block_len = val as usize;
+ self.tmp.resize(self.block_len, 0);
+ }
+ },
+ _ => {},
+ };
+ }
+ }
+ }
+ }
+ fn query_option_value(&self, name: &str) -> Option<NAValue> {
+ match name {
+ "order" => Some(NAValue::Int(i64::from(self.order))),
+ "block_size" => Some(NAValue::Int(self.block_len as i64)),
+ _ => None,
+ }
+ }
+}
+
+pub fn get_encoder() -> Box<dyn NAEncoder + Send> {
+ Box::new(FLACEncoder::new())
+}
+
+#[cfg(test)]
+mod test {
+ use nihav_core::codecs::*;
+ use nihav_core::demuxers::*;
+ use nihav_core::muxers::*;
+ use nihav_codec_support::test::enc_video::*;
+ use crate::*;
+
+ #[test]
+ fn test_flac_encoder_verbatim() {
+ let enc_options = &[
+ NAOption{name: "order", value: NAValue::Int(0)},
+ ];
+ test_flac_encoder("uncompr.flac", enc_options,
+ &[0xcd9767ee, 0xf8a86d20, 0x317944aa, 0xd9044f5c]);
+ }
+ #[test]
+ fn test_flac_encoder_fixed1() {
+ let enc_options = &[
+ NAOption{name: "order", value: NAValue::Int(-1)},
+ ];
+ test_flac_encoder("fixed1.flac", enc_options,
+ &[0xcf654f93, 0x1db0bb07, 0xbc0cd9c3, 0xf9d2cc4e]);
+ }
+ #[test]
+ fn test_flac_encoder_fixed4() {
+ let enc_options = &[
+ NAOption{name: "order", value: NAValue::Int(-4)},
+ ];
+ test_flac_encoder("fixed1.flac", enc_options,
+ &[0xbc2fba7f, 0x6f9406ee, 0x98be1f67, 0xe2b86b2d]);
+ }
+ #[test]
+ fn test_flac_encoder_lpc10() {
+ let enc_options = &[
+ NAOption{name: "order", value: NAValue::Int(10)},
+ ];
+ test_flac_encoder("lpc10.flac", enc_options,
+ &[0xb6736f2e, 0xb61dda7a, 0xeb4037db, 0x8ee4afb9]);
+ }
+
+ fn test_flac_encoder(name: &'static str, enc_options: &[NAOption], hash: &[u32; 4]) {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ llaudio_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ llaudio_register_all_decoders(&mut dec_reg);
+ let mut mux_reg = RegisteredMuxers::new();
+ llaudio_register_all_muxers(&mut mux_reg);
+ let mut enc_reg = RegisteredEncoders::new();
+ llaudio_register_all_encoders(&mut enc_reg);
+
+ let dec_config = DecoderTestParams {
+ demuxer: "flac",
+ in_name: "assets/LLaudio/luckynight.flac",
+ stream_type: StreamType::Audio,
+ limit: Some(10),
+ dmx_reg, dec_reg,
+ };
+ let enc_config = EncoderTestParams {
+ muxer: "flac",
+ enc_name: "flac",
+ out_name: name,
+ mux_reg, enc_reg,
+ };
+ let dst_ainfo = NAAudioInfo {
+ sample_rate: 0,
+ channels: 0,
+ format: SND_S16_FORMAT,
+ block_len: 0,
+ };
+ let enc_params = EncodeParameters {
+ format: NACodecTypeInfo::Audio(dst_ainfo),
+ quality: 0,
+ bitrate: 0,
+ tb_num: 0,
+ tb_den: 0,
+ flags: 0,
+ };
+// test_encoding_to_file(&dec_config, &enc_config, enc_params, enc_options);
+
+ test_encoding_md5(&dec_config, &enc_config, enc_params, enc_options,
+ hash);
+ }
+}
+
+const CRC8_TABLE: [u8; 256] = [
+ 0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15,
+ 0x38, 0x3F, 0x36, 0x31, 0x24, 0x23, 0x2A, 0x2D,
+ 0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65,
+ 0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D,
+ 0xE0, 0xE7, 0xEE, 0xE9, 0xFC, 0xFB, 0xF2, 0xF5,
+ 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD,
+ 0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85,
+ 0xA8, 0xAF, 0xA6, 0xA1, 0xB4, 0xB3, 0xBA, 0xBD,
+ 0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2,
+ 0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA,
+ 0xB7, 0xB0, 0xB9, 0xBE, 0xAB, 0xAC, 0xA5, 0xA2,
+ 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A,
+ 0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32,
+ 0x1F, 0x18, 0x11, 0x16, 0x03, 0x04, 0x0D, 0x0A,
+ 0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42,
+ 0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A,
+ 0x89, 0x8E, 0x87, 0x80, 0x95, 0x92, 0x9B, 0x9C,
+ 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4,
+ 0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC,
+ 0xC1, 0xC6, 0xCF, 0xC8, 0xDD, 0xDA, 0xD3, 0xD4,
+ 0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C,
+ 0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44,
+ 0x19, 0x1E, 0x17, 0x10, 0x05, 0x02, 0x0B, 0x0C,
+ 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34,
+ 0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B,
+ 0x76, 0x71, 0x78, 0x7F, 0x6A, 0x6D, 0x64, 0x63,
+ 0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B,
+ 0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13,
+ 0xAE, 0xA9, 0xA0, 0xA7, 0xB2, 0xB5, 0xBC, 0xBB,
+ 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83,
+ 0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB,
+ 0xE6, 0xE1, 0xE8, 0xEF, 0xFA, 0xFD, 0xF4, 0xF3
+];
+
+const CRC16_TABLE: [u16; 256] = [
+ 0x0000, 0x8005, 0x800F, 0x000A, 0x801B, 0x001E, 0x0014, 0x8011,
+ 0x8033, 0x0036, 0x003C, 0x8039, 0x0028, 0x802D, 0x8027, 0x0022,
+ 0x8063, 0x0066, 0x006C, 0x8069, 0x0078, 0x807D, 0x8077, 0x0072,
+ 0x0050, 0x8055, 0x805F, 0x005A, 0x804B, 0x004E, 0x0044, 0x8041,
+ 0x80C3, 0x00C6, 0x00CC, 0x80C9, 0x00D8, 0x80DD, 0x80D7, 0x00D2,
+ 0x00F0, 0x80F5, 0x80FF, 0x00FA, 0x80EB, 0x00EE, 0x00E4, 0x80E1,
+ 0x00A0, 0x80A5, 0x80AF, 0x00AA, 0x80BB, 0x00BE, 0x00B4, 0x80B1,
+ 0x8093, 0x0096, 0x009C, 0x8099, 0x0088, 0x808D, 0x8087, 0x0082,
+ 0x8183, 0x0186, 0x018C, 0x8189, 0x0198, 0x819D, 0x8197, 0x0192,
+ 0x01B0, 0x81B5, 0x81BF, 0x01BA, 0x81AB, 0x01AE, 0x01A4, 0x81A1,
+ 0x01E0, 0x81E5, 0x81EF, 0x01EA, 0x81FB, 0x01FE, 0x01F4, 0x81F1,
+ 0x81D3, 0x01D6, 0x01DC, 0x81D9, 0x01C8, 0x81CD, 0x81C7, 0x01C2,
+ 0x0140, 0x8145, 0x814F, 0x014A, 0x815B, 0x015E, 0x0154, 0x8151,
+ 0x8173, 0x0176, 0x017C, 0x8179, 0x0168, 0x816D, 0x8167, 0x0162,
+ 0x8123, 0x0126, 0x012C, 0x8129, 0x0138, 0x813D, 0x8137, 0x0132,
+ 0x0110, 0x8115, 0x811F, 0x011A, 0x810B, 0x010E, 0x0104, 0x8101,
+ 0x8303, 0x0306, 0x030C, 0x8309, 0x0318, 0x831D, 0x8317, 0x0312,
+ 0x0330, 0x8335, 0x833F, 0x033A, 0x832B, 0x032E, 0x0324, 0x8321,
+ 0x0360, 0x8365, 0x836F, 0x036A, 0x837B, 0x037E, 0x0374, 0x8371,
+ 0x8353, 0x0356, 0x035C, 0x8359, 0x0348, 0x834D, 0x8347, 0x0342,
+ 0x03C0, 0x83C5, 0x83CF, 0x03CA, 0x83DB, 0x03DE, 0x03D4, 0x83D1,
+ 0x83F3, 0x03F6, 0x03FC, 0x83F9, 0x03E8, 0x83ED, 0x83E7, 0x03E2,
+ 0x83A3, 0x03A6, 0x03AC, 0x83A9, 0x03B8, 0x83BD, 0x83B7, 0x03B2,
+ 0x0390, 0x8395, 0x839F, 0x039A, 0x838B, 0x038E, 0x0384, 0x8381,
+ 0x0280, 0x8285, 0x828F, 0x028A, 0x829B, 0x029E, 0x0294, 0x8291,
+ 0x82B3, 0x02B6, 0x02BC, 0x82B9, 0x02A8, 0x82AD, 0x82A7, 0x02A2,
+ 0x82E3, 0x02E6, 0x02EC, 0x82E9, 0x02F8, 0x82FD, 0x82F7, 0x02F2,
+ 0x02D0, 0x82D5, 0x82DF, 0x02DA, 0x82CB, 0x02CE, 0x02C4, 0x82C1,
+ 0x8243, 0x0246, 0x024C, 0x8249, 0x0258, 0x825D, 0x8257, 0x0252,
+ 0x0270, 0x8275, 0x827F, 0x027A, 0x826B, 0x026E, 0x0264, 0x8261,
+ 0x0220, 0x8225, 0x822F, 0x022A, 0x823B, 0x023E, 0x0234, 0x8231,
+ 0x8213, 0x0216, 0x021C, 0x8219, 0x0208, 0x820D, 0x8207, 0x0202
+];
projects / nihav.git / commitdiff