--- /dev/null
+use nihav_core::codecs::*;
+use nihav_core::io::byteio::*;
+use nihav_core::io::bitreader::*;
+use nihav_core::io::codebook::*;
+use nihav_codec_support::codecs::IPShuffler;
+
+const COEFFS_PER_BLOCK: [usize; 4] = [0, 1, 4, 64];
+
+struct BlockTypeReader<'a> {
+ src: &'a [u8],
+ pos: usize,
+ bpos: usize,
+}
+
+impl<'a> BlockTypeReader<'a> {
+ fn read_block_type(&mut self) -> DecoderResult<usize> {
+ if self.pos >= self.src.len() {
+ return Err(DecoderError::ShortData);
+ }
+ let btype = (self.src[self.pos] >> self.bpos) & 3;
+ self.bpos += 2;
+ if self.bpos == 8 {
+ self.bpos = 0;
+ self.pos += 1;
+ }
+ Ok(btype as usize)
+ }
+}
+
+struct MaskReader<'a> {
+ src: &'a [u8],
+ pos: usize,
+ bpos: usize,
+}
+
+impl<'a> MaskReader<'a> {
+ fn read_type(&mut self) -> DecoderResult<(bool, bool)> {
+ if self.pos >= self.src.len() {
+ return Err(DecoderError::ShortData);
+ }
+ let is_intra = ((self.src[self.pos] >> self.bpos) & 1) == 0;
+ let has_residue = ((self.src[self.pos] >> (self.bpos + 4)) & 1) == 0;
+ self.bpos += 1;
+ if self.bpos == 4 {
+ self.bpos = 0;
+ self.pos += 1;
+ }
+ Ok((is_intra, has_residue))
+ }
+}
+
+struct Midivid3Decoder {
+ info: NACodecInfoRef,
+ shuf: IPShuffler,
+ cb: Codebook<u32>,
+ width: usize,
+ height: usize,
+ num_mbs: usize,
+ coeffs: [i16; 65536],
+ mvs: Vec<i16>,
+ qmat_y_intra: [i16; 64],
+ qmat_c_intra: [i16; 64],
+ qmat_y_inter: [i16; 64],
+ qmat_c_inter: [i16; 64],
+}
+
+impl Midivid3Decoder {
+ fn new() -> Self {
+ let mut cr = ShortCodebookDescReader::new(vec![
+ ShortCodebookDesc { code: 0b00, bits: 2 },
+ ShortCodebookDesc { code: 0b01, bits: 2 },
+ ShortCodebookDesc { code: 0b100, bits: 3 },
+ ShortCodebookDesc { code: 0b101, bits: 3 },
+ ShortCodebookDesc { code: 0b110, bits: 3 },
+ ShortCodebookDesc { code: 0b1110, bits: 4 },
+ ShortCodebookDesc { code: 0b11110, bits: 5 },
+ ShortCodebookDesc { code: 0b111110, bits: 6 },
+ ShortCodebookDesc { code: 0b1111110, bits: 7 },
+ ShortCodebookDesc { code: 0b11111110, bits: 8 },
+ ShortCodebookDesc { code: 0b111111110, bits: 9 },
+ ShortCodebookDesc { code: 0b111111111, bits: 9 }
+ ]);
+ let cb = Codebook::new(&mut cr, CodebookMode::MSB).unwrap();
+ Midivid3Decoder {
+ info: NACodecInfoRef::default(),
+ shuf: IPShuffler::default(),
+ cb,
+ width: 0, height: 0, num_mbs: 0,
+ coeffs: [0; 65536],
+ mvs: Vec::new(),
+ qmat_y_intra: [0; 64],
+ qmat_c_intra: [0; 64],
+ qmat_y_inter: [0; 64],
+ qmat_c_inter: [0; 64],
+ }
+ }
+ fn decode_intra(&mut self, frm: &mut NASimpleVideoFrame<u8>, bt_reader: &mut BlockTypeReader, br: &mut BitReader) -> DecoderResult<()> {
+ let mut ydst = frm.offset[0];
+ let mut udst = frm.offset[1];
+ let mut vdst = frm.offset[2];
+ for _y in (0..self.height).step_by(16) {
+ let mut ydc = 0;
+ let mut udc = 0;
+ let mut vdc = 0;
+ let ncoeffs = br.read(16)? as usize;
+ decode_values(br, &mut self.coeffs[..ncoeffs], &self.cb)?;
+ let mut cpos = 0;
+ for x in (0..self.width).step_by(16) {
+ for blk in 0..4 {
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ let cur_off = x + (blk & 1) * 8 + (blk & 2) * 4 * frm.stride[0];
+ if btype != 0 {
+ self.coeffs[cpos] += ydc;
+ ydc = self.coeffs[cpos];
+ }
+ decode_block_intra(&mut frm.data[ydst + cur_off..], frm.stride[0], btype, &self.coeffs[cpos..], &self.qmat_y_intra);
+ cpos += nc;
+ }
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ if btype != 0 {
+ self.coeffs[cpos] += udc;
+ udc = self.coeffs[cpos];
+ }
+ decode_block_intra(&mut frm.data[udst + x / 2..], frm.stride[1], btype, &self.coeffs[cpos..], &self.qmat_c_intra);
+ cpos += nc;
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ if btype != 0 {
+ self.coeffs[cpos] += vdc;
+ vdc = self.coeffs[cpos];
+ }
+ decode_block_intra(&mut frm.data[vdst + x / 2..], frm.stride[2], btype, &self.coeffs[cpos..], &self.qmat_c_intra);
+ cpos += nc;
+ }
+ ydst += frm.stride[0] * 16;
+ udst += frm.stride[1] * 8;
+ vdst += frm.stride[2] * 8;
+ }
+ Ok(())
+ }
+ fn decode_inter(&mut self, frm: &mut NASimpleVideoFrame<u8>, mask_reader: &mut MaskReader, bt_reader: &mut BlockTypeReader, br: &mut BitReader, num_mvs: usize) -> DecoderResult<()> {
+ let ref_frm = self.shuf.get_ref();
+ if ref_frm.is_none() {
+ return Err(DecoderError::MissingReference);
+ }
+ let ref_frm = ref_frm.unwrap();
+
+ decode_values(br, &mut self.mvs[..num_mvs * 2], &self.cb)?;
+
+ let mut ydst = frm.offset[0];
+ let mut udst = frm.offset[1];
+ let mut vdst = frm.offset[2];
+ let mut cur_mv = 0;
+ for y in (0..self.height).step_by(16) {
+ let mut ydc = 0;
+ let mut udc = 0;
+ let mut vdc = 0;
+ let ncoeffs = br.read(16)? as usize;
+ let pred_mbs = br.read(8)? as usize;
+ decode_values(br, &mut self.coeffs[..ncoeffs], &self.cb)?;
+ let mut cpos = 0;
+ let mut cur_mb = 0;
+ for x in (0..self.width).step_by(16) {
+ let (is_intra, has_residue) = mask_reader.read_type()?;
+ if is_intra {
+ for blk in 0..4 {
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ if (btype != 0) && (cur_mb < pred_mbs) {
+ self.coeffs[cpos] += ydc;
+ ydc = self.coeffs[cpos];
+ }
+ let cur_off = x + (blk & 1) * 8 + (blk & 2) * 4 * frm.stride[0];
+ decode_block_intra(&mut frm.data[ydst + cur_off..], frm.stride[0], btype, &self.coeffs[cpos..], &self.qmat_y_intra);
+ cpos += nc;
+ }
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ if (btype != 0) && (cur_mb < pred_mbs) {
+ self.coeffs[cpos] += udc;
+ udc = self.coeffs[cpos];
+ }
+ decode_block_intra(&mut frm.data[udst + x / 2..], frm.stride[1], btype, &self.coeffs[cpos..], &self.qmat_c_intra);
+ cpos += nc;
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ if (btype != 0) && (cur_mb < pred_mbs) {
+ self.coeffs[cpos] += vdc;
+ vdc = self.coeffs[cpos];
+ }
+ decode_block_intra(&mut frm.data[vdst + x / 2..], frm.stride[2], btype, &self.coeffs[cpos..], &self.qmat_c_intra);
+ cpos += nc;
+ } else {
+ validate!(cur_mv < num_mvs);
+ let mv_x = self.mvs[cur_mv * 2];
+ let mv_y = self.mvs[cur_mv * 2 + 1];
+ cur_mv += 1;
+ let src_x = (x as isize) + (mv_x as isize);
+ let src_y = (y as isize) + (mv_y as isize);
+ validate!(src_x >= 0 && src_x + 16 <= self.width as isize);
+ validate!(src_y >= 0 && src_y + 16 <= self.height as isize);
+ let sstride = ref_frm.get_stride(0);
+ let src = &ref_frm.get_data()[ref_frm.get_offset(0) + (src_x as usize) + (src_y as usize) * sstride..];
+ let dst = &mut frm.data[ydst + x..];
+ for (dst, src) in dst.chunks_mut(frm.stride[0]).zip(src.chunks(sstride)).take(16) {
+ (&mut dst[..16]).copy_from_slice(&src[..16]);
+ }
+ let xoff = (src_x as usize) >> 1;
+ let yoff = (src_y as usize) >> 1;
+ for plane in 1..3 {
+ let sstride = ref_frm.get_stride(plane);
+ let src = &ref_frm.get_data()[ref_frm.get_offset(plane) + xoff + yoff * sstride..];
+ let dst = &mut frm.data[if plane == 1 { udst } else { vdst } + x / 2..];
+ for (dst, src) in dst.chunks_mut(frm.stride[plane]).zip(src.chunks(sstride)).take(8) {
+ (&mut dst[..8]).copy_from_slice(&src[..8]);
+ }
+ }
+ if has_residue {
+ for blk in 0..4 {
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ if (btype != 0) && (cur_mb < pred_mbs) {
+ self.coeffs[cpos] += ydc;
+ ydc = self.coeffs[cpos];
+ }
+ let cur_off = x + (blk & 1) * 8 + (blk & 2) * 4 * frm.stride[0];
+ decode_block_inter(&mut frm.data[ydst + cur_off..], frm.stride[0], btype, &self.coeffs[cpos..], &self.qmat_y_inter);
+ cpos += nc;
+ }
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ if (btype != 0) && (cur_mb < pred_mbs) {
+ self.coeffs[cpos] += udc;
+ udc = self.coeffs[cpos];
+ }
+ decode_block_inter(&mut frm.data[udst + x / 2..], frm.stride[1], btype, &self.coeffs[cpos..], &self.qmat_c_inter);
+ cpos += nc;
+ let btype = bt_reader.read_block_type()?;
+ let nc = COEFFS_PER_BLOCK[btype];
+ validate!(cpos + nc <= ncoeffs);
+ if (btype != 0) && (cur_mb < pred_mbs) {
+ self.coeffs[cpos] += vdc;
+ vdc = self.coeffs[cpos];
+ }
+ decode_block_inter(&mut frm.data[vdst + x / 2..], frm.stride[2], btype, &self.coeffs[cpos..], &self.qmat_c_inter);
+ cpos += nc;
+ }
+ }
+ if is_intra || has_residue {
+ cur_mb += 1;
+ }
+ }
+ ydst += frm.stride[0] * 16;
+ udst += frm.stride[1] * 8;
+ vdst += frm.stride[2] * 8;
+ }
+ Ok(())
+ }
+}
+
+fn decode_values(br: &mut BitReader, dst: &mut [i16], cb: &Codebook<u32>) -> DecoderResult<()> {
+ let mut zero_run = 0usize;
+ for el in dst.iter_mut() {
+ if zero_run > 0 {
+ *el = 0;
+ zero_run -= 1;
+ } else {
+ let val = br.read_cb(&cb)? as u8;
+ if val == 0 {
+ zero_run = if br.read_bool()? {
+ br.read(6)? as usize + 8
+ } else {
+ br.read(3)? as usize
+ };
+ *el = 0;
+ } else {
+ let sign = br.read_bool()?;
+ let abits = br.read(val - 1)? as i16;
+ *el = (1 << (val - 1)) + abits;
+ if sign {
+ *el = -*el;
+ }
+ }
+ }
+ }
+ Ok(())
+}
+
+fn dequant(val: i16, q: i16) -> i32 {
+ (val as i32) * (q as i32)
+}
+
+fn scale_coef(val: i32, scale: i16) -> i32 {
+ ((val as i32) * (scale as i32)) >> 8
+}
+
+macro_rules! idct_1d {
+ ($c0: expr, $c1: expr, $c2: expr, $c3: expr, $c4: expr, $c5: expr, $c6: expr, $c7: expr) => {
+ let t0 = $c0 + $c4;
+ let t1 = $c0 - $c4;
+ let t2 = $c2 + $c6;
+ let t3 = scale_coef($c2 - $c6, 362) - t2;
+ let t4 = t0 + t2;
+ let t5 = t0 - t2;
+ let t6 = t1 + t3;
+ let t7 = t1 - t3;
+ let t8 = $c5 + $c3;
+ let t9 = $c5 - $c3;
+ let ta = $c1 + $c7;
+ let tb = $c1 - $c7;
+ let tc = t8 + ta;
+ let td = scale_coef(tb + t9, 473);
+ let te = scale_coef(t9, -669) - tc + td;
+ let tf = scale_coef(ta - t8, 362) - te;
+ let t10 = scale_coef(tb, 277) - td + tf;
+ $c0 = t4 + tc;
+ $c1 = t6 + te;
+ $c2 = t7 + tf;
+ $c3 = t5 - t10;
+ $c4 = t5 + t10;
+ $c5 = t7 - tf;
+ $c6 = t6 - te;
+ $c7 = t4 - tc;
+ }
+}
+
+fn idct(blk: &mut [i32; 64]) {
+ for i in 0..8 {
+ idct_1d!(blk[i + 0 * 8], blk[i + 1 * 8], blk[i + 2 * 8], blk[i + 3 * 8],
+ blk[i + 4 * 8], blk[i + 5 * 8], blk[i + 6 * 8], blk[i + 7 * 8]);
+ }
+ for row in blk.chunks_mut(8) {
+ idct_1d!(row[0], row[1], row[2], row[3], row[4], row[5], row[6], row[7]);
+ }
+ for el in blk.iter_mut() {
+ *el = *el >> 5;
+ }
+}
+
+fn decode_block_intra(dst: &mut [u8], stride: usize, btype: usize, coeffs: &[i16], qmat: &[i16; 64]) {
+ match btype {
+ 0 | 1 => {
+ let fill_val = if btype == 0 { 0x80 } else {
+ ((dequant(coeffs[0], qmat[0]) >> 5) + 128).max(0).min(255) as u8
+ };
+ for line in dst.chunks_mut(stride).take(8) {
+ for el in line.iter_mut().take(8) {
+ *el = fill_val;
+ }
+ }
+ },
+ 2 => {
+ let mut blk = [0i32; 64];
+ blk[0] = dequant(coeffs[0], qmat[0]);
+ blk[1] = dequant(coeffs[1], qmat[1]);
+ blk[8] = dequant(coeffs[2], qmat[8]);
+ blk[9] = dequant(coeffs[3], qmat[9]);
+ idct(&mut blk);
+ for (line, row) in dst.chunks_mut(stride).zip(blk.chunks(8)).take(8) {
+ for (dst, coef) in line.iter_mut().zip(row.iter()).take(8) {
+ *dst = (*coef + 128).max(0).min(255) as u8;
+ }
+ }
+ },
+ _ => {
+ let mut blk = [0i32; 64];
+ for i in 0..64 {
+ blk[SCAN[i]] = dequant(coeffs[i], qmat[SCAN[i]]);
+ }
+ idct(&mut blk);
+ for (line, row) in dst.chunks_mut(stride).zip(blk.chunks(8)).take(8) {
+ for (dst, coef) in line.iter_mut().zip(row.iter()).take(8) {
+ *dst = (*coef + 128).max(0).min(255) as u8;
+ }
+ }
+ },
+ };
+}
+
+fn decode_block_inter(dst: &mut [u8], stride: usize, btype: usize, coeffs: &[i16], qmat: &[i16; 64]) {
+ match btype {
+ 0 => {}
+ 1 => {
+ let dc = dequant(coeffs[0], qmat[0]) >> 5;
+ for line in dst.chunks_mut(stride).take(8) {
+ for el in line.iter_mut().take(8) {
+ *el = ((*el as i32) + dc).max(0).min(255) as u8;
+ }
+ }
+ },
+ 2 => {
+ let mut blk = [0i32; 64];
+ blk[0] = dequant(coeffs[0], qmat[0]);
+ blk[1] = dequant(coeffs[1], qmat[1]);
+ blk[8] = dequant(coeffs[2], qmat[8]);
+ blk[9] = dequant(coeffs[3], qmat[9]);
+ idct(&mut blk);
+ for (line, row) in dst.chunks_mut(stride).zip(blk.chunks(8)).take(8) {
+ for (dst, coef) in line.iter_mut().zip(row.iter()).take(8) {
+ *dst = (*dst as i32 + *coef).max(0).min(255) as u8;
+ }
+ }
+ },
+ _ => {
+ let mut blk = [0i32; 64];
+ for i in 0..64 {
+ blk[SCAN[i]] = dequant(coeffs[i], qmat[SCAN[i]]);
+ }
+ idct(&mut blk);
+ for (line, row) in dst.chunks_mut(stride).zip(blk.chunks(8)).take(8) {
+ for (dst, coef) in line.iter_mut().zip(row.iter()).take(8) {
+ *dst = (*dst as i32 + *coef).max(0).min(255) as u8;
+ }
+ }
+ },
+ };
+}
+
+fn init_quant(qmat: &mut [i16; 64], base_qmat: &[u8; 64], quant: u8) {
+ let q = if quant < 50 {
+ 5000 / (quant.max(1) as i32)
+ } else {
+ ((100 - quant.min(100)) * 2) as i32
+ };
+ for (inq, (outq, scale)) in base_qmat.iter().zip(qmat.iter_mut().zip(QUANT_MATRIX.iter())) {
+ let val = (((*inq as i32) * q + 50) / 100).max(1).min(0x7FFF);
+ *outq = ((val * (*scale as i32) + 0x800) >> 12) as i16;
+ }
+}
+
+impl NADecoder for Midivid3Decoder {
+ 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, true, YUV420_FORMAT));
+ self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
+ self.num_mbs = ((self.width + 15) >> 4) * ((self.height + 15) >> 4);
+ self.mvs.resize(self.num_mbs * 2, 0);
+
+ Ok(())
+ } else {
+ Err(DecoderError::InvalidData)
+ }
+ }
+ fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
+ let src = pkt.get_buffer();
+ validate!(src.len() > 8);
+
+ let i_quant = src[0];
+ let p_quant = i_quant.wrapping_add(src[1]);
+ let inter_flag = read_u16le(&src[2..])?;
+ validate!(inter_flag < 2);
+ let is_intra = inter_flag == 0;
+
+ init_quant(&mut self.qmat_y_intra, &QUANT_MAT_LUMA, i_quant);
+ init_quant(&mut self.qmat_c_intra, &QUANT_MAT_CHROMA, i_quant);
+ init_quant(&mut self.qmat_y_inter, &QUANT_MAT_LUMA, p_quant);
+ init_quant(&mut self.qmat_c_inter, &QUANT_MAT_CHROMA, p_quant);
+
+ let bufinfo = alloc_video_buffer(self.info.get_properties().get_video_info().unwrap(), 4)?;
+ let mut buf = bufinfo.get_vbuf().unwrap();
+
+ let mut frm = NASimpleVideoFrame::from_video_buf(&mut buf).unwrap();
+ let bt_size = read_u16le(&src[4..])? as usize;
+ if is_intra {
+ validate!(bt_size + 6 <= src.len());
+
+ let bt_buf = if is_intra { &src[6..][..bt_size] } else { &src[8..][..bt_size] };
+ let mut bt_reader = BlockTypeReader { src: bt_buf, pos: 0, bpos: 0 };
+ let mut br = BitReader::new(&src[6 + bt_size..], BitReaderMode::BE);
+
+ self.decode_intra(&mut frm, &mut bt_reader, &mut br)?;
+ } else {
+ let num_mvs = read_u16le(&src[6..])? as usize;
+ let mask_len = (self.num_mbs + 3) >> 2;
+ let data_start = 8 + bt_size + mask_len;
+ validate!(data_start <= src.len());
+ validate!(num_mvs <= self.num_mbs);
+
+ let bt_buf = &src[8 + mask_len..][..bt_size];
+ let mask = &src[8..][..mask_len];
+ let mut mask_reader = MaskReader { src: mask, pos: 0, bpos: 0 };
+ let mut bt_reader = BlockTypeReader { src: bt_buf, pos: 0, bpos: 0 };
+ let mut br = BitReader::new(&src[data_start..], BitReaderMode::BE);
+
+ self.decode_inter(&mut frm, &mut mask_reader, &mut bt_reader, &mut br, num_mvs)?;
+ }
+
+ self.shuf.add_frame(buf.clone());
+
+ let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), NABufferType::Video(buf));
+ frm.set_keyframe(is_intra);
+ frm.set_frame_type(if is_intra { FrameType::I } else { FrameType::P });
+ Ok(frm.into_ref())
+ }
+ fn flush(&mut self) {
+ self.shuf.clear();
+ }
+}
+
+
+pub fn get_decoder_video() -> Box<dyn NADecoder + Send> {
+ Box::new(Midivid3Decoder::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_codecs;
+ use nihav_commonfmt::generic_register_all_demuxers;
+ #[test]
+ fn test_midivid3_video() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ generic_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ game_register_all_codecs(&mut dec_reg);
+
+ test_decoding("avi", "midivid3", "assets/Game/mv30.avi", Some(16), &dmx_reg, &dec_reg,
+ ExpectedTestResult::MD5Frames(vec![
+ [0x0f4f2377, 0xe017458f, 0xebf6d59d, 0x238a3e64],
+ [0xdca83224, 0xbd2fd721, 0x954804c6, 0xaa38b1f3],
+ [0x35104196, 0xf96eacb5, 0x5d34910a, 0xb6dfde27],
+ [0x6106ddf6, 0xda75f5bf, 0x1eaeef52, 0xffbfbdb8],
+ [0xdd429c46, 0x4bc67009, 0xdc14d6e2, 0x816f7e4a],
+ [0xa58a19fa, 0x663edfc1, 0x12a89fe7, 0x7ffd8484],
+ [0xf4f2f0c5, 0x5479661c, 0x22839c5f, 0x8ff45232],
+ [0xb70cb7d9, 0x9c514449, 0xabb85bb4, 0x5b20d9d7],
+ [0xd65c33cc, 0xba03ff85, 0x615b3171, 0xfd16334f],
+ [0x13c5ffc3, 0x1e279df1, 0x48393c15, 0x394bfabe],
+ [0x169cb91a, 0x2a8f8a63, 0x995d53c2, 0x1123d5e9],
+ [0x26a8bc57, 0x3b8ba658, 0xb960ef85, 0xf4dbd720],
+ [0x13a405e9, 0x3fae3101, 0xee1c29f4, 0x3bf69d94],
+ [0x3d7b1b6b, 0x9026d717, 0x97e1c6c1, 0x4c6877a7],
+ [0x8f2f4b9a, 0x6afa65f3, 0x9b0e0173, 0x56725a4a],
+ [0x4b140176, 0x10ee87d5, 0x899e86fe, 0xb30fc404],
+ [0xb82892a1, 0x2eda670c, 0x7a130bb4, 0x810fc089]]));
+ }
+}
+
+const QUANT_MAT_LUMA: [u8; 64] = [
+ 12, 12, 15, 19, 25, 34, 40, 48,
+ 12, 12, 18, 22, 27, 44, 47, 46,
+ 17, 18, 21, 26, 35, 46, 52, 47,
+ 18, 20, 24, 28, 40, 61, 59, 51,
+ 20, 24, 32, 43, 50, 72, 72, 63,
+ 25, 31, 42, 48, 58, 72, 81, 75,
+ 38, 46, 54, 61, 71, 84, 88, 85,
+ 50, 61, 65, 68, 79, 78, 86, 91
+];
+
+const QUANT_MAT_CHROMA: [u8; 64] = [
+ 12, 16, 24, 47, 99, 99, 99, 99,
+ 16, 21, 26, 66, 99, 99, 99, 99,
+ 24, 26, 56, 99, 99, 99, 99, 99,
+ 47, 66, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99,
+ 99, 99, 99, 99, 99, 99, 99, 99
+];
+
+const QUANT_MATRIX: [i16; 64] = [
+ 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
+ 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270,
+ 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906,
+ 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315,
+ 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
+ 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552,
+ 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446,
+ 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
+];
+
+const SCAN: [usize; 64] = [
+ 0, 1, 8, 9, 16, 2, 3, 10,
+ 17, 24, 32, 25, 18, 11, 4, 5,
+ 12, 19, 26, 33, 40, 48, 41, 34,
+ 27, 20, 13, 6, 7, 14, 21, 28,
+ 35, 42, 49, 56, 57, 50, 43, 36,
+ 29, 22, 15, 23, 30, 37, 44, 51,
+ 58, 59, 52, 45, 38, 31, 39, 46,
+ 53, 60, 61, 54, 47, 55, 62, 63
+];
projects / nihav.git / commitdiff