codecs/vp5.rs

   1 use nihav_core::codecs::*;
   2 use nihav_core::io::bitreader::*;
   3 use super::vpcommon::*;
   4 use super::vp56::*;
   5
   6 struct VP5BR {}
   7
   8 impl VP5BR {
   9     fn new() -> Self {
  10         Self {}
  11     }
  12 }
  13
  14 impl VP56Parser for VP5BR {
  15     fn parse_header(&mut self, bc: &mut BoolCoder) -> DecoderResult<VP56Header> {
  16         let mut hdr = VP56Header::default();
  17         hdr.is_intra                            = !bc.read_bool();
  18         hdr.is_golden = hdr.is_intra;
  19                                                   bc.read_bool();
  20         hdr.quant                               = bc.read_bits(6) as u8;
  21         if hdr.is_intra {
  22             hdr.version                         = bc.read_bits(13) as u8;
  23             validate!(hdr.version == 5);
  24             hdr.profile                         = bc.read_bits(2) as u8;
  25             hdr.interlaced                      = bc.read_bool();
  26             validate!(!hdr.interlaced);
  27             hdr.mb_h                            = bc.read_bits(8) as u8;
  28             hdr.mb_w                            = bc.read_bits(8) as u8;
  29             hdr.disp_h                          = bc.read_bits(8) as u8;
  30             hdr.disp_w                          = bc.read_bits(8) as u8;
  31             validate!((hdr.mb_h > 0) && (hdr.mb_w > 0) && (hdr.disp_w > 0) && (hdr.disp_h > 0));
  32             validate!((hdr.disp_w <= hdr.mb_w) && (hdr.disp_h <= hdr.mb_h));
  33             hdr.scale                           = bc.read_bits(2) as u8;
  34         }
  35
  36         Ok(hdr)
  37     }
  38     fn decode_mv(&self, bc: &mut BoolCoder, model: &VP56MVModel) -> i16 {
  39         if bc.read_prob(model.nz_prob) {
  40             let sign                            = bc.read_prob(model.sign_prob);
  41             let b0                              = bc.read_prob(model.raw_probs[0]) as i16;
  42             let b1                              = bc.read_prob(model.raw_probs[1]) as i16;
  43             let top: i16 = vp_tree!(bc, model.tree_probs[0],
  44                                 vp_tree!(bc, model.tree_probs[1],
  45                                     vp_tree!(bc, model.tree_probs[2], 0, 1),
  46                                     vp_tree!(bc, model.tree_probs[3], 2, 3)
  47                                 ),
  48                                 vp_tree!(bc, model.tree_probs[4],
  49                                     vp_tree!(bc, model.tree_probs[5], 4, 5),
  50                                     vp_tree!(bc, model.tree_probs[6], 6, 7)
  51                                 )
  52                            );
  53             let val = (top << 2) | (b1 << 1) | b0;
  54             if !sign {
  55                 val
  56             } else {
  57                 -val
  58             }
  59         } else {
  60             0
  61         }
  62     }
  63     fn reset_models(&self, models: &mut VP56Models) {
  64         for mdl in models.mv_models.iter_mut() {
  65             mdl.nz_prob         = 128;
  66             mdl.sign_prob       = 128;
  67             mdl.raw_probs[0]    = 85;
  68             mdl.raw_probs[1]    = 128;
  69             mdl.tree_probs      = [128; 7];
  70         }
  71     }
  72     fn decode_mv_models(&self, bc: &mut BoolCoder, models: &mut [VP56MVModel; 2]) -> DecoderResult<()> {
  73         const HAS_NZ_PROB:   [u8; 2] = [ 243, 235 ];
  74         const HAS_SIGN_PROB: [u8; 2] = [ 220, 211 ];
  75         const HAS_RAW0_PROB: [u8; 2] = [ 251, 246 ];
  76         const HAS_RAW1_PROB: [u8; 2] = [ 253, 249 ];
  77         const HAS_TREE_PROB: [[u8; 7]; 2] = [
  78             [ 237, 232, 241, 245, 247, 251, 253 ],
  79             [ 234, 231, 248, 249, 252, 252, 254 ]
  80         ];
  81         for comp in 0..2 {
  82             if bc.read_prob(HAS_NZ_PROB[comp]) {
  83                 models[comp].nz_prob            = bc.read_probability();
  84             }
  85             if bc.read_prob(HAS_SIGN_PROB[comp]) {
  86                 models[comp].sign_prob          = bc.read_probability();
  87             }
  88             if bc.read_prob(HAS_RAW0_PROB[comp]) {
  89                 models[comp].raw_probs[0]       = bc.read_probability();
  90             }
  91             if bc.read_prob(HAS_RAW1_PROB[comp]) {
  92                 models[comp].raw_probs[1]       = bc.read_probability();
  93             }
  94         }
  95         for comp in 0..2 {
  96             for i in 0..7 {
  97                 if bc.read_prob(HAS_TREE_PROB[comp][i]) {
  98                     models[comp].tree_probs[i]  = bc.read_probability();
  99                 }
 100             }
 101         }
 102         Ok(())
 103     }
 104     fn decode_coeff_models(&self, bc: &mut BoolCoder, models: &mut VP56Models, is_intra: bool) -> DecoderResult<()> {
 105         const COEF_PROBS: [[u8; 11]; 2] = [
 106             [ 146, 197, 181, 207, 232, 243, 238, 251, 244, 250, 249 ],
 107             [ 179, 219, 214, 240, 250, 254, 244, 254, 254, 254, 254 ]
 108         ];
 109
 110         let mut def_prob = [128u8; 11];
 111         for plane in 0..2 {
 112             for i in 0..11 {
 113                 if bc.read_prob(COEF_PROBS[plane][i]) {
 114                     def_prob[i]                 = bc.read_probability();
 115                     models.coeff_models[plane].dc_value_probs[i] = def_prob[i];
 116                 } else if is_intra {
 117                     models.coeff_models[plane].dc_value_probs[i] = def_prob[i];
 118                 }
 119             }
 120         }
 121         for ctype in 0..3 {
 122             for plane in 0..2 {
 123                 for group in 0..6 {
 124                     for i in 0..11 {
 125                         if bc.read_prob(VP5_AC_PROBS[ctype][plane][group][i]) {
 126                             def_prob[i]         = bc.read_probability();
 127                             models.coeff_models[plane].ac_val_probs[ctype][group][i] = def_prob[i];
 128                         } else if is_intra {
 129                             models.coeff_models[plane].ac_val_probs[ctype][group][i] = def_prob[i];
 130                         }
 131                     }
 132                 }
 133             }
 134         }
 135         for plane in 0..2 {
 136             let mdl = &mut models.coeff_models[plane];
 137             for i in 0..6 {
 138                 for j in 0..6 {
 139                     for k in 0..5 {
 140                         mdl.dc_token_probs[i][j][k] = rescale_prob(mdl.dc_value_probs[k], &VP5_DC_WEIGHTS[k][i][j], 254);
 141                     }
 142                 }
 143             }
 144             for ctype in 0..3 {
 145                 for group in 0..3 {
 146                     for i in 0..6 {
 147                         for j in 0..5 {
 148                             mdl.ac_type_probs[ctype][group][i][j] = rescale_prob(mdl.ac_val_probs[ctype][group][j], &VP5_AC_WEIGHTS[ctype][group][j][i], 254);
 149                         }
 150                     }
 151                 }
 152             }
 153         }
 154         Ok(())
 155     }
 156     fn decode_block(&self, bc: &mut BoolCoder, coeffs: &mut [i16; 64], model: &VP56CoeffModel, _vp6model: &VP6Models, fstate: &mut FrameState) -> DecoderResult<()> {
 157         const COEF_GROUPS: [u8; 64] = [
 158             0, 0, 1, 1, 2, 1, 1, 2,
 159             2, 1, 1, 2, 2, 2, 1, 2,
 160             2, 2, 2, 2, 1, 1, 2, 2,
 161             3, 3, 4, 3, 4, 4, 4, 3,
 162             3, 3, 3, 3, 4, 3, 3, 3,
 163             4, 4, 4, 4, 4, 3, 3, 4,
 164             4, 4, 3, 4, 4, 4, 4, 4,
 165             4, 4, 5, 5, 5, 5, 5, 5
 166         ];
 167
 168         let mut ctype = 1;
 169         let left_ctx = fstate.coeff_cat[fstate.ctx_idx][0] as usize;
 170         let top_ctx = fstate.top_ctx as usize;
 171
 172         let mut val_probs: &[u8; 11] = &model.dc_value_probs;
 173         let mut tok_probs: &[u8] = &model.dc_token_probs[left_ctx][top_ctx];
 174         let mut idx = 0;
 175         loop {
 176             let token = vp_tree!(bc, tok_probs[0],
 177                             if ctype != 0 { vp_tree!(bc, tok_probs[1], break, 0) } else { 0 },
 178                             vp_tree!(bc, tok_probs[2],
 179                                 1,
 180                                 vp_tree!(bc, tok_probs[3],
 181                                     vp_tree!(bc, tok_probs[4], 2,
 182                                              vp_tree!(bc, val_probs[5], 3, 4)),
 183                                     TOKEN_LARGE)));
 184             let val = expand_token_bc(bc, val_probs, token, 5);
 185             ctype = token.min(2) as usize;
 186             if token < TOKEN_LARGE {
 187                 fstate.coeff_cat[fstate.ctx_idx][idx] = token.min(3);
 188             } else {
 189                 fstate.coeff_cat[fstate.ctx_idx][idx] = 4;
 190             }
 191             coeffs[ZIGZAG[idx]] = val;
 192             if idx > 0 {
 193                 coeffs[ZIGZAG[idx]] *= fstate.ac_quant;
 194             }
 195
 196             idx += 1;
 197             if idx >= 64 {
 198                 break;
 199             }
 200             let group = COEF_GROUPS[idx] as usize;
 201             val_probs = &model.ac_val_probs[ctype][group];
 202             tok_probs = if group > 2 { val_probs
 203                         } else {
 204                             let ctx = fstate.coeff_cat[fstate.ctx_idx][idx] as usize;
 205                             &model.ac_type_probs[ctype][group][ctx]
 206                         };
 207         }
 208         let end = fstate.last_idx[fstate.ctx_idx].min(24);
 209         fstate.last_idx[fstate.ctx_idx] = idx;
 210         for i in idx..end {
 211             fstate.coeff_cat[fstate.ctx_idx][i] = 5;
 212         }
 213         fstate.top_ctx = fstate.coeff_cat[fstate.ctx_idx][0];
 214
 215         Ok(())
 216     }
 217     fn decode_block_huff(&self, _br: &mut BitReader, _coeffs: &mut [i16; 64], _vp6model: &VP6Models, _model: &VP6HuffModels, _fstate: &mut FrameState) -> DecoderResult<()> {
 218         unreachable!();
 219     }
 220     fn mc_block(&self, dst: &mut NASimpleVideoFrame<u8>, mc_buf: NAVideoBufferRef<u8>, src: NAVideoBufferRef<u8>, plane: usize, x: usize, y: usize, mv: MV, loop_str: i16) {
 221         let (sx, sy, mx, my) = if (plane != 1) && (plane != 2) {
 222                 (mv.x >> 1, mv.y >> 1, mv.x & 1, mv.y & 1)
 223             } else {
 224                 (mv.x >> 2, mv.y >> 2, if (mv.x & 3) != 0 { 1 } else { 0 }, if (mv.y & 3) != 0 { 1 } else { 0 })
 225             };
 226         let mode1 = (mx as usize) + (my as usize) * 2;
 227         let mode = if (mode1 == 3) && (mv.x ^ mv.y < 0) {
 228                 4
 229             } else {
 230                 mode1
 231             };
 232         vp_copy_block(dst, src, plane, x, y, sx, sy, 0, 1, loop_str,
 233                       mode, VP3_INTERP_FUNCS, mc_buf);
 234     }
 235 }
 236
 237 struct VP5Decoder {
 238     dec:        VP56Decoder,
 239     info:       NACodecInfoRef,
 240     br:         VP5BR,
 241 }
 242
 243 impl VP5Decoder {
 244     fn new() -> Self {
 245         Self {
 246             dec:        VP56Decoder::new(5, false, true),
 247             info:       NACodecInfoRef::default(),
 248             br:         VP5BR::new(),
 249         }
 250     }
 251 }
 252
 253 impl NADecoder for VP5Decoder {
 254     fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
 255         if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
 256             let myvinfo = NAVideoInfo::new(vinfo.get_width(), vinfo.get_height(), false, YUV420_FORMAT);
 257             let myinfo = NACodecTypeInfo::Video(myvinfo.clone());
 258             self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
 259             self.dec.init(supp, myvinfo)?;
 260             Ok(())
 261         } else {
 262             Err(DecoderError::InvalidData)
 263         }
 264     }
 265     fn decode(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
 266         let src = pkt.get_buffer();
 267
 268         let (bufinfo, ftype) = self.dec.decode_frame(supp, src.as_slice(), &mut self.br)?;
 269
 270         let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
 271         frm.set_keyframe(ftype == FrameType::I);
 272         frm.set_frame_type(ftype);
 273         Ok(frm.into_ref())
 274     }
 275     fn flush(&mut self) {
 276         self.dec.flush();
 277     }
 278 }
 279
 280 pub fn get_decoder() -> Box<NADecoder + Send> {
 281     Box::new(VP5Decoder::new())
 282 }
 283
 284 #[cfg(test)]
 285 mod test {
 286     use nihav_core::codecs::RegisteredDecoders;
 287     use nihav_core::demuxers::RegisteredDemuxers;
 288     use nihav_core::test::dec_video::*;
 289     use crate::duck_register_all_codecs;
 290     use nihav_commonfmt::generic_register_all_demuxers;
 291
 292     #[test]
 293     fn test_vp5() {
 294         let mut dmx_reg = RegisteredDemuxers::new();
 295         generic_register_all_demuxers(&mut dmx_reg);
 296         let mut dec_reg = RegisteredDecoders::new();
 297         duck_register_all_codecs(&mut dec_reg);
 298
 299         let file = "assets/Duck/Cell-140.vp5";
 300         //let file = "assets/Duck/Chocolat-500.vp5";
 301         test_decoding("avi", "vp5", file, Some(96), &dmx_reg, &dec_reg,
 302                       ExpectedTestResult::MD5([0x9ad78b0f, 0xed988ead, 0x88ed2ea9, 0xcdb75cdf]));
 303     }
 304 }
 305
 306 const VP5_AC_PROBS: [[[[u8; 11]; 6]; 2]; 3] = [
 307   [
 308     [
 309       [ 227, 246, 230, 247, 244, 254, 254, 254, 254, 254, 254 ],
 310       [ 202, 254, 209, 231, 231, 249, 249, 253, 254, 254, 254 ],
 311       [ 206, 254, 225, 242, 241, 251, 253, 254, 254, 254, 254 ],
 312       [ 235, 254, 241, 253, 252, 254, 254, 254, 254, 254, 254 ],
 313       [ 234, 254, 248, 254, 254, 254, 254, 254, 254, 254, 254 ],
 314       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ]
 315     ], [
 316       [ 240, 254, 248, 254, 254, 254, 254, 254, 254, 254, 254 ],
 317       [ 238, 254, 240, 253, 254, 254, 254, 254, 254, 254, 254 ],
 318       [ 244, 254, 251, 254, 254, 254, 254, 254, 254, 254, 254 ],
 319       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ],
 320       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ],
 321       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ]
 322     ]
 323   ], [
 324     [
 325       [ 206, 203, 227, 239, 247, 254, 253, 254, 254, 254, 254 ],
 326       [ 207, 199, 220, 236, 243, 252, 252, 254, 254, 254, 254 ],
 327       [ 212, 219, 230, 243, 244, 253, 252, 254, 254, 254, 254 ],
 328       [ 236, 237, 247, 252, 253, 254, 254, 254, 254, 254, 254 ],
 329       [ 240, 240, 248, 254, 254, 254, 254, 254, 254, 254, 254 ],
 330       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ]
 331     ], [
 332       [ 230, 233, 249, 254, 254, 254, 254, 254, 254, 254, 254 ],
 333       [ 238, 238, 250, 254, 254, 254, 254, 254, 254, 254, 254 ],
 334       [ 248, 251, 254, 254, 254, 254, 254, 254, 254, 254, 254 ],
 335       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ],
 336       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ],
 337       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ]
 338     ]
 339   ], [
 340     [
 341       [ 225, 239, 227, 231, 244, 253, 243, 254, 254, 253, 254 ],
 342       [ 232, 234, 224, 228, 242, 249, 242, 252, 251, 251, 254 ],
 343       [ 235, 249, 238, 240, 251, 254, 249, 254, 253, 253, 254 ],
 344       [ 249, 253, 251, 250, 254, 254, 254, 254, 254, 254, 254 ],
 345       [ 251, 250, 249, 254, 254, 254, 254, 254, 254, 254, 254 ],
 346       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ]
 347     ], [
 348       [ 243, 244, 250, 250, 254, 254, 254, 254, 254, 254, 254 ],
 349       [ 249, 248, 250, 253, 254, 254, 254, 254, 254, 254, 254 ],
 350       [ 253, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ],
 351       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ],
 352       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ],
 353       [ 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254 ]
 354     ]
 355   ]
 356 ];
 357
 358 const VP5_DC_WEIGHTS: [[[[i16; 2]; 6]; 6]; 5] = [
 359   [
 360     [ [154,  61], [141,  54], [ 90,  45], [ 54,  34], [ 54,  13], [128, 109] ],
 361     [ [136,  54], [148,  45], [ 92,  41], [ 54,  33], [ 51,  15], [ 87, 113] ],
 362     [ [ 87,  44], [ 97,  40], [ 67,  36], [ 46,  29], [ 41,  15], [ 64,  80] ],
 363     [ [ 59,  33], [ 61,  31], [ 51,  28], [ 44,  22], [ 33,  12], [ 49,  63] ],
 364     [ [ 69,  12], [ 59,  16], [ 46,  14], [ 31,  13], [ 26,   6], [ 92,  26] ],
 365     [ [128, 108], [ 77, 119], [ 54,  84], [ 26,  71], [ 87,  19], [ 95, 155] ]
 366   ], [
 367     [ [154,   4], [182,   0], [159,  -8], [128,  -5], [143,  -5], [187,  55] ],
 368     [ [182,   0], [228,  -3], [187,  -7], [174,  -9], [189, -11], [169,  79] ],
 369     [ [161,  -9], [192,  -8], [187,  -9], [169, -10], [136,  -9], [184,  40] ],
 370     [ [164, -11], [179, -10], [174, -10], [161, -10], [115,  -7], [197,  20] ],
 371     [ [195, -11], [195, -11], [146, -10], [110,  -6], [ 95,  -4], [195,  39] ],
 372     [ [182,  55], [172,  77], [177,  37], [169,  29], [172,  52], [ 92, 162] ]
 373   ], [
 374     [ [174,  80], [164,  80], [ 95,  80], [ 46,  66], [ 56,  24], [ 36, 193] ],
 375     [ [164,  80], [166,  77], [105,  76], [ 49,  68], [ 46,  31], [ 49, 186] ],
 376     [ [ 97,  78], [110,  74], [ 72,  72], [ 44,  60], [ 33,  30], [ 69, 131] ],
 377     [ [ 61,  61], [ 69,  63], [ 51,  57], [ 31,  48], [ 26,  27], [ 64,  89] ],
 378     [ [ 67,  23], [ 51,  32], [ 36,  33], [ 26,  28], [ 20,  12], [ 44,  68] ],
 379     [ [ 26, 197], [ 41, 189], [ 61, 129], [ 28, 103], [ 49,  52], [-12, 245] ]
 380   ], [
 381     [ [102, 141], [ 79, 166], [ 72, 162], [ 97, 125], [179,   4], [307,   0] ],
 382     [ [ 72, 168], [ 69, 175], [ 84, 160], [105, 127], [148,  34], [310,   0] ],
 383     [ [ 84, 151], [ 82, 161], [ 87, 153], [ 87, 135], [115,  51], [317,   0] ],
 384     [ [ 97, 125], [102, 131], [105, 125], [ 87, 122], [ 84,  64], [ 54, 184] ],
 385     [ [166,  18], [146,  43], [125,  51], [ 90,  64], [ 95,   7], [ 38, 154] ],
 386     [ [294,   0], [ 13, 225], [ 10, 225], [ 67, 168], [  0, 167], [161,  94] ]
 387   ], [
 388     [ [172,  76], [172,  75], [136,  80], [ 64,  98], [ 74,  67], [315,   0] ],
 389     [ [169,  76], [207,  56], [164,  66], [ 97,  80], [ 67,  72], [328,   0] ],
 390     [ [136,  80], [187,  53], [154,  62], [ 72,  85], [ -2, 105], [305,   0] ],
 391     [ [ 74,  91], [128,  64], [113,  64], [ 61,  77], [ 41,  75], [259,   0] ],
 392     [ [ 46,  84], [ 51,  81], [ 28,  89], [ 31,  78], [ 23,  77], [202,   0] ],
 393     [ [323,   0], [323,   0], [300,   0], [236,   0], [195,   0], [328,   0] ]
 394   ]
 395 ];
 396
 397 const VP5_AC_WEIGHTS: [[[[[i16; 2]; 6]; 5]; 3]; 3] = [
 398   [
 399     [
 400       [ [276,  0], [238,  0], [195,  0], [156,  0], [113,  0], [274,  0] ],
 401       [ [  0,  1], [  0,  1], [  0,  1], [  0,  1], [  0,  1], [  0,  1] ],
 402       [ [192, 59], [182, 50], [141, 48], [110, 40], [ 92, 19], [125,128] ],
 403       [ [169, 87], [169, 83], [184, 62], [220, 16], [184,  0], [264,  0] ],
 404       [ [212, 40], [212, 36], [169, 49], [174, 27], [  8,120], [182, 71] ]
 405     ], [
 406       [ [259, 10], [197, 19], [143, 22], [123, 16], [110,  8], [133, 88] ],
 407       [ [  0,  1], [256,  0], [  0,  1], [  0,  1], [  0,  1], [  0,  1] ],
 408       [ [207, 46], [187, 50], [ 97, 83], [ 23,100], [ 41, 56], [ 56,188] ],
 409       [ [166, 90], [146,108], [161, 88], [136, 95], [174,  0], [266,  0] ],
 410       [ [264,  7], [243, 18], [184, 43], [-14,154], [ 20,112], [ 20,199] ]
 411     ], [
 412       [ [230, 26], [197, 22], [159, 20], [146, 12], [136,  4], [ 54,162] ],
 413       [ [  0,  1], [  0,  1], [  0,  1], [  0,  1], [  0,  1], [  0,  1] ],
 414       [ [192, 59], [156, 72], [ 84,101], [ 49,101], [ 79, 47], [ 79,167] ],
 415       [ [138,115], [136,116], [166, 80], [238,  0], [195,  0], [261,  0] ],
 416       [ [225, 33], [205, 42], [159, 61], [ 79, 96], [ 92, 66], [ 28,195] ]
 417     ]
 418   ], [
 419     [
 420       [ [200, 37], [197, 18], [159, 13], [143,  7], [102,  5], [123,126] ],
 421       [ [197,  3], [220, -9], [210,-12], [187, -6], [151, -2], [174, 80] ],
 422       [ [200, 53], [187, 47], [159, 40], [118, 38], [100, 18], [141,111] ],
 423       [ [179, 78], [166, 86], [197, 50], [207, 27], [187,  0], [115,139] ],
 424       [ [218, 34], [220, 29], [174, 46], [128, 61], [ 54, 89], [187, 65] ]
 425     ], [
 426       [ [238, 14], [197, 18], [125, 26], [ 90, 25], [ 82, 13], [161, 86] ],
 427       [ [189,  1], [205, -2], [156, -4], [143, -4], [146, -4], [172, 72] ],
 428       [ [230, 31], [192, 45], [102, 76], [ 38, 85], [ 56, 41], [ 64,173] ],
 429       [ [166, 91], [141,111], [128,116], [118,109], [177,  0], [ 23,222] ],
 430       [ [253, 14], [236, 21], [174, 49], [ 33,118], [ 44, 93], [ 23,187] ]
 431     ], [
 432       [ [218, 28], [179, 28], [118, 35], [ 95, 30], [ 72, 24], [128,108] ],
 433       [ [187,  1], [174, -1], [125, -1], [110, -1], [108, -1], [202, 52] ],
 434       [ [197, 53], [146, 75], [ 46,118], [ 33,103], [ 64, 50], [118,126] ],
 435       [ [138,114], [128,122], [161, 86], [243, -6], [195,  0], [ 38,210] ],
 436       [ [215, 39], [179, 58], [ 97,101], [ 95, 85], [ 87, 70], [ 69,152] ]
 437     ]
 438   ], [
 439     [
 440       [ [236, 24], [205, 18], [172, 12], [154,  6], [125,  1], [169, 75] ],
 441       [ [187,  4], [230, -2], [228, -4], [236, -4], [241, -2], [192, 66] ],
 442       [ [200, 46], [187, 42], [159, 34], [136, 25], [105, 10], [179, 62] ],
 443       [ [207, 55], [192, 63], [192, 54], [195, 36], [177,  1], [143, 98] ],
 444       [ [225, 27], [207, 34], [200, 30], [131, 57], [ 97, 60], [197, 45] ]
 445     ], [
 446       [ [271,  8], [218, 13], [133, 19], [ 90, 19], [ 72,  7], [182, 51] ],
 447       [ [179,  1], [225, -1], [154, -2], [110, -1], [ 92,  0], [195, 41] ],
 448       [ [241, 26], [189, 40], [ 82, 64], [ 33, 60], [ 67, 17], [120, 94] ],
 449       [ [192, 68], [151, 94], [146, 90], [143, 72], [161,  0], [113,128] ],
 450       [ [256, 12], [218, 29], [166, 48], [ 44, 99], [ 31, 87], [148, 78] ]
 451     ], [
 452       [ [238, 20], [184, 22], [113, 27], [ 90, 22], [ 74,  9], [192, 37] ],
 453       [ [184,  0], [215, -1], [141, -1], [ 97,  0], [ 49,  0], [264, 13] ],
 454       [ [182, 51], [138, 61], [ 95, 63], [ 54, 59], [ 64, 25], [200, 45] ],
 455       [ [179, 75], [156, 87], [174, 65], [177, 44], [174,  0], [164, 85] ],
 456       [ [195, 45], [148, 65], [105, 79], [ 95, 72], [ 87, 60], [169, 63] ]
 457     ]
 458   ]
 459 ];