| 1 | use nihav_core::codecs::*; |
| 2 | use nihav_core::io::bitreader::*; |
| 3 | use nihav_codec_support::codecs::{MV, ZERO_MV}; |
| 4 | use super::vpcommon::*; |
| 5 | |
| 6 | pub const TOKEN_LARGE: u8 = 5; |
| 7 | pub const TOKEN_EOB: u8 = 42; |
| 8 | |
| 9 | #[derive(Clone,Copy,Debug,Default)] |
| 10 | #[allow(dead_code)] |
| 11 | pub struct VP56Header { |
| 12 | pub is_intra: bool, |
| 13 | pub is_golden: bool, |
| 14 | pub quant: u8, |
| 15 | pub multistream: bool, |
| 16 | pub use_huffman: bool, |
| 17 | pub version: u8, |
| 18 | pub profile: u8, |
| 19 | pub interlaced: bool, |
| 20 | pub offset: u16, |
| 21 | pub mb_w: u8, |
| 22 | pub mb_h: u8, |
| 23 | pub disp_w: u8, |
| 24 | pub disp_h: u8, |
| 25 | pub scale: u8, |
| 26 | } |
| 27 | |
| 28 | #[derive(Clone,Copy,Default)] |
| 29 | pub struct VP56MVModel { |
| 30 | pub nz_prob: u8, |
| 31 | pub sign_prob: u8, |
| 32 | pub raw_probs: [u8; 8], |
| 33 | pub tree_probs: [u8; 7], |
| 34 | } |
| 35 | |
| 36 | #[derive(Clone,Copy,Default)] |
| 37 | pub struct VP56MBTypeModel { |
| 38 | pub probs: [u8; 10], |
| 39 | } |
| 40 | |
| 41 | #[derive(Clone,Copy,Default)] |
| 42 | pub struct VP56CoeffModel { |
| 43 | pub dc_token_probs: [[[u8; 5]; 6]; 6], |
| 44 | pub dc_value_probs: [u8; 11], |
| 45 | pub ac_ctype_probs: [[[[u8; 5]; 5]; 6]; 3], |
| 46 | pub ac_type_probs: [[[[u8; 5]; 6]; 3]; 3], |
| 47 | pub ac_val_probs: [[[u8; 11]; 6]; 3], |
| 48 | } |
| 49 | |
| 50 | pub struct VP6Models { |
| 51 | pub scan_order: [usize; 64], |
| 52 | pub scan: [usize; 64], |
| 53 | pub zigzag: [usize; 64], |
| 54 | pub zero_run_probs: [[u8; 14]; 2], |
| 55 | } |
| 56 | |
| 57 | const MAX_HUFF_ELEMS: usize = 12; |
| 58 | #[derive(Clone,Copy,Default)] |
| 59 | pub struct VP6Huff { |
| 60 | pub codes: [u16; MAX_HUFF_ELEMS], |
| 61 | pub bits: [u8; MAX_HUFF_ELEMS], |
| 62 | } |
| 63 | |
| 64 | #[derive(Clone,Copy,Default)] |
| 65 | struct Node { |
| 66 | weight: u16, |
| 67 | sym: i8, |
| 68 | ch0: usize, |
| 69 | ch1: usize, |
| 70 | } |
| 71 | |
| 72 | fn prob2weight(a: u8, b: u8) -> u8 { |
| 73 | let w = ((u16::from(a) * u16::from(b)) >> 8) as u8; |
| 74 | if w == 0 { |
| 75 | 1 |
| 76 | } else { |
| 77 | w |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | impl VP6Huff { |
| 82 | fn build_codes(&mut self, probs: &[u8; 11]) { |
| 83 | let mut weights = [0u8; 12]; |
| 84 | |
| 85 | weights[11] = prob2weight( probs[0], probs[ 1]); |
| 86 | weights[ 0] = prob2weight( probs[0], !probs[ 1]); |
| 87 | weights[ 1] = prob2weight(!probs[0], probs[ 2]); |
| 88 | let lvroot = prob2weight(!probs[0], !probs[ 2]); |
| 89 | let tworoot = prob2weight( lvroot, probs[ 3]); |
| 90 | let hlroot = prob2weight( lvroot, !probs[ 3]); |
| 91 | weights[ 2] = prob2weight( tworoot, probs[ 4]); |
| 92 | let root34 = prob2weight( tworoot, !probs[ 4]); |
| 93 | weights[ 3] = prob2weight( root34, probs[ 5]); |
| 94 | weights[ 4] = prob2weight( root34, !probs[ 5]); |
| 95 | let c1root = prob2weight( hlroot, probs[ 6]); |
| 96 | let c34root = prob2weight( hlroot, !probs[ 6]); |
| 97 | weights[ 5] = prob2weight( c1root, probs[ 7]); |
| 98 | weights[ 6] = prob2weight( c1root, !probs[ 7]); |
| 99 | let c3root = prob2weight( c34root, probs[ 8]); |
| 100 | let c4root = prob2weight( c34root, !probs[ 8]); |
| 101 | weights[ 7] = prob2weight( c3root, probs[ 9]); |
| 102 | weights[ 8] = prob2weight( c3root, !probs[ 9]); |
| 103 | weights[ 9] = prob2weight( c4root, probs[10]); |
| 104 | weights[10] = prob2weight( c4root, !probs[10]); |
| 105 | |
| 106 | self.build(&weights); |
| 107 | } |
| 108 | fn build_codes_zero_run(&mut self, probs: &[u8; 14]) { |
| 109 | let mut weights = [0u8; 9]; |
| 110 | |
| 111 | let root = prob2weight( probs[0], probs[1]); |
| 112 | weights[0] = prob2weight( root, probs[2]); |
| 113 | weights[1] = prob2weight( root, !probs[2]); |
| 114 | |
| 115 | let root = prob2weight( probs[0], !probs[1]); |
| 116 | weights[2] = prob2weight( root, probs[3]); |
| 117 | weights[3] = prob2weight( root, !probs[3]); |
| 118 | |
| 119 | let root = prob2weight(!probs[0], probs[4]); |
| 120 | weights[8] = prob2weight(!probs[0], !probs[4]); |
| 121 | let root1 = prob2weight( root, probs[5]); |
| 122 | let root2 = prob2weight( root, !probs[5]); |
| 123 | weights[4] = prob2weight( root1, probs[6]); |
| 124 | weights[5] = prob2weight( root1, !probs[6]); |
| 125 | weights[6] = prob2weight( root2, probs[7]); |
| 126 | weights[7] = prob2weight( root2, !probs[7]); |
| 127 | |
| 128 | self.build(&weights); |
| 129 | } |
| 130 | fn build(&mut self, weights: &[u8]) { |
| 131 | let mut nodes = [Node::default(); MAX_HUFF_ELEMS * 2]; |
| 132 | let mut nlen = 0; |
| 133 | |
| 134 | for w in weights.iter().rev() { |
| 135 | let weight = u16::from(*w); |
| 136 | let mut pos = nlen; |
| 137 | for i in 0..nlen { |
| 138 | if nodes[i].weight > weight { |
| 139 | pos = i; |
| 140 | break; |
| 141 | } |
| 142 | } |
| 143 | for j in (pos..nlen).rev() { |
| 144 | nodes[j + 1] = nodes[j]; |
| 145 | } |
| 146 | nodes[pos].weight = weight; |
| 147 | nodes[pos].sym = (weights.len() - nlen - 1) as i8; |
| 148 | nlen += 1; |
| 149 | } |
| 150 | |
| 151 | let mut low = 0; |
| 152 | for _ in 0..nlen-1 { |
| 153 | let nnode = Node { |
| 154 | weight: nodes[low + 0].weight + nodes[low + 1].weight, |
| 155 | sym: -1, |
| 156 | ch0: low + 0, |
| 157 | ch1: low + 1, |
| 158 | }; |
| 159 | low += 2; |
| 160 | let mut pos = low; |
| 161 | while (pos < nlen) && (nodes[pos].weight < nnode.weight) { |
| 162 | pos += 1; |
| 163 | } |
| 164 | for j in (pos..nlen).rev() { |
| 165 | nodes[j + 1] = nodes[j]; |
| 166 | } |
| 167 | nodes[pos] = nnode; |
| 168 | nlen += 1; |
| 169 | } |
| 170 | self.get_codes(&nodes, nlen - 1, 0, 0); |
| 171 | for i in nlen..self.codes.len() { |
| 172 | self.codes[i] = self.codes[0]; |
| 173 | self.bits[i] = self.bits[0]; |
| 174 | } |
| 175 | } |
| 176 | fn get_codes(&mut self, nodes: &[Node], pos: usize, code: u16, len: u8) { |
| 177 | if nodes[pos].sym >= 0 { |
| 178 | self.codes[nodes[pos].sym as usize] = code; |
| 179 | self.bits [nodes[pos].sym as usize] = len; |
| 180 | } else { |
| 181 | self.get_codes(nodes, nodes[pos].ch0, (code << 1) | 0, len + 1); |
| 182 | self.get_codes(nodes, nodes[pos].ch1, (code << 1) | 1, len + 1); |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | pub trait ReadHuff { |
| 188 | fn read_huff(&mut self, huff: &VP6Huff) -> DecoderResult<u8>; |
| 189 | } |
| 190 | |
| 191 | impl<'a> ReadHuff for BitReader<'a> { |
| 192 | fn read_huff(&mut self, huff: &VP6Huff) -> DecoderResult<u8> { |
| 193 | let peekval = self.peek(16); |
| 194 | for (i, (code, bit)) in huff.codes.iter().zip(huff.bits.iter()).enumerate() { |
| 195 | if (peekval >> (16 - *bit)) == u32::from(*code) { |
| 196 | self.skip(u32::from(*bit))?; |
| 197 | return Ok(i as u8); |
| 198 | } |
| 199 | } |
| 200 | Err(DecoderError::InvalidData) |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | #[derive(Clone,Copy,Default)] |
| 205 | pub struct VP6HuffModels { |
| 206 | pub dc_token_tree: [VP6Huff; 2], |
| 207 | pub ac_token_tree: [[[VP6Huff; 6]; 3]; 2], |
| 208 | pub zero_run_tree: [VP6Huff; 2], |
| 209 | } |
| 210 | |
| 211 | impl VP6Models { |
| 212 | fn new() -> Self { |
| 213 | Self { |
| 214 | scan_order: [0; 64], |
| 215 | scan: [0; 64], |
| 216 | zigzag: [0; 64], |
| 217 | zero_run_probs: [[0; 14]; 2], |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | pub struct VP56Models { |
| 223 | pub mv_models: [VP56MVModel; 2], |
| 224 | pub mbtype_models: [[VP56MBTypeModel; 10]; 3], |
| 225 | pub coeff_models: [VP56CoeffModel; 2], |
| 226 | pub prob_xmitted: [[u8; 20]; 3], |
| 227 | pub vp6models: VP6Models, |
| 228 | pub vp6huff: VP6HuffModels, |
| 229 | } |
| 230 | |
| 231 | impl VP56Models { |
| 232 | fn new() -> Self { |
| 233 | Self { |
| 234 | mv_models: [VP56MVModel::default(); 2], |
| 235 | mbtype_models: [[VP56MBTypeModel::default(); 10]; 3], |
| 236 | coeff_models: [VP56CoeffModel::default(); 2], |
| 237 | prob_xmitted: [[0; 20]; 3], |
| 238 | vp6models: VP6Models::new(), |
| 239 | vp6huff: VP6HuffModels::default(), |
| 240 | } |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | pub trait VP56Parser { |
| 245 | fn parse_header(&mut self, bc: &mut BoolCoder) -> DecoderResult<VP56Header>; |
| 246 | fn reset_models(&self, models: &mut VP56Models); |
| 247 | fn decode_mv(&self, bc: &mut BoolCoder, model: &VP56MVModel) -> i16; |
| 248 | fn decode_mv_models(&self, bc: &mut BoolCoder, models: &mut [VP56MVModel; 2]) -> DecoderResult<()>; |
| 249 | fn decode_coeff_models(&self, bc: &mut BoolCoder, models: &mut VP56Models, is_intra: bool) -> DecoderResult<()>; |
| 250 | fn decode_block(&self, bc: &mut BoolCoder, coeffs: &mut [i16; 64], model: &VP56CoeffModel, vp6model: &VP6Models, fstate: &mut FrameState) -> DecoderResult<()>; |
| 251 | fn decode_block_huff(&self, br: &mut BitReader, coeffs: &mut [i16; 64], vp6model: &VP6Models, model: &VP6HuffModels, fstate: &mut FrameState) -> DecoderResult<()>; |
| 252 | fn mc_block(&self, dst: &mut NASimpleVideoFrame<u8>, mc_buf: NAVideoBufferRef<u8>, src: NAVideoBufferRef<u8>, plane: usize, x: usize, y: usize, mv: MV, loop_thr: i16); |
| 253 | } |
| 254 | |
| 255 | enum CoeffReader<'a> { |
| 256 | None, |
| 257 | Bool(BoolCoder<'a>), |
| 258 | Huff(BitReader<'a>), |
| 259 | } |
| 260 | |
| 261 | #[derive(Clone,Copy,Default)] |
| 262 | struct MBInfo { |
| 263 | mb_type: VPMBType, |
| 264 | mv: MV, |
| 265 | } |
| 266 | |
| 267 | pub struct FrameState { |
| 268 | pub mb_x: usize, |
| 269 | pub mb_y: usize, |
| 270 | pub plane: usize, |
| 271 | pub coeff_cat: [[u8; 64]; 4], |
| 272 | pub last_idx: [usize; 4], |
| 273 | pub top_ctx: u8, |
| 274 | pub ctx_idx: usize, |
| 275 | pub dc_quant: i16, |
| 276 | pub ac_quant: i16, |
| 277 | pub dc_zero_run: [usize; 2], |
| 278 | pub ac_zero_run: [usize; 2], |
| 279 | } |
| 280 | |
| 281 | impl FrameState { |
| 282 | fn new() -> Self { |
| 283 | Self { |
| 284 | mb_x: 0, |
| 285 | mb_y: 0, |
| 286 | plane: 0, |
| 287 | coeff_cat: [[0; 64]; 4], |
| 288 | last_idx: [0; 4], |
| 289 | top_ctx: 0, |
| 290 | ctx_idx: 0, |
| 291 | dc_quant: 0, |
| 292 | ac_quant: 0, |
| 293 | dc_zero_run: [0; 2], |
| 294 | ac_zero_run: [0; 2], |
| 295 | } |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | #[derive(Default)] |
| 300 | pub struct VP56DCPred { |
| 301 | dc_y: Vec<i16>, |
| 302 | dc_u: Vec<i16>, |
| 303 | dc_v: Vec<i16>, |
| 304 | ldc_y: [i16; 2], |
| 305 | ldc_u: i16, |
| 306 | ldc_v: i16, |
| 307 | ref_y: Vec<u8>, |
| 308 | ref_c: Vec<u8>, |
| 309 | ref_left: u8, |
| 310 | y_idx: usize, |
| 311 | c_idx: usize, |
| 312 | } |
| 313 | |
| 314 | const INVALID_REF: u8 = 42; |
| 315 | |
| 316 | impl VP56DCPred { |
| 317 | fn new() -> Self { Self::default() } |
| 318 | fn resize(&mut self, mb_w: usize) { |
| 319 | self.dc_y.resize(mb_w * 2 + 2, 0); |
| 320 | self.dc_u.resize(mb_w + 2, 0); |
| 321 | self.dc_v.resize(mb_w + 2, 0); |
| 322 | self.ref_y.resize(mb_w * 2 + 2, INVALID_REF); |
| 323 | self.ref_c.resize(mb_w + 2, INVALID_REF); |
| 324 | self.ref_c[0] = 0; |
| 325 | } |
| 326 | fn reset(&mut self) { |
| 327 | self.update_row(); |
| 328 | for el in self.ref_y.iter_mut().skip(1) { *el = INVALID_REF; } |
| 329 | for el in self.ref_c.iter_mut().skip(1) { *el = INVALID_REF; } |
| 330 | } |
| 331 | fn update_row(&mut self) { |
| 332 | self.y_idx = 1; |
| 333 | self.c_idx = 1; |
| 334 | self.ldc_y = [0; 2]; |
| 335 | self.ldc_u = 0; |
| 336 | self.ldc_v = 0; |
| 337 | self.ref_left = INVALID_REF; |
| 338 | } |
| 339 | fn next_mb(&mut self) { |
| 340 | self.y_idx += 2; |
| 341 | self.c_idx += 1; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | pub struct VP56Decoder { |
| 346 | version: u8, |
| 347 | has_alpha: bool, |
| 348 | flip: bool, |
| 349 | shuf: VPShuffler, |
| 350 | width: usize, |
| 351 | height: usize, |
| 352 | mb_w: usize, |
| 353 | mb_h: usize, |
| 354 | models: VP56Models, |
| 355 | amodels: VP56Models, |
| 356 | coeffs: [[i16; 64]; 6], |
| 357 | last_mbt: VPMBType, |
| 358 | |
| 359 | loop_thr: i16, |
| 360 | ilace_prob: u8, |
| 361 | ilace_mb: bool, |
| 362 | |
| 363 | mb_info: Vec<MBInfo>, |
| 364 | fstate: FrameState, |
| 365 | dc_pred: VP56DCPred, |
| 366 | last_dc: [[i16; 4]; 3], |
| 367 | top_ctx: [Vec<u8>; 4], |
| 368 | |
| 369 | mc_buf: NAVideoBufferRef<u8>, |
| 370 | } |
| 371 | |
| 372 | fn rescale_mb_mode_prob(prob: u32, total: u32) -> u8 { |
| 373 | (255 * prob / (1 + total)) as u8 |
| 374 | } |
| 375 | |
| 376 | fn map_mb_type(mbtype: VPMBType) -> usize { |
| 377 | match mbtype { |
| 378 | VPMBType::InterNoMV => 0, |
| 379 | VPMBType::Intra => 1, |
| 380 | VPMBType::InterMV => 2, |
| 381 | VPMBType::InterNearest => 3, |
| 382 | VPMBType::InterNear => 4, |
| 383 | VPMBType::GoldenNoMV => 5, |
| 384 | VPMBType::GoldenMV => 6, |
| 385 | VPMBType::InterFourMV => 7, |
| 386 | VPMBType::GoldenNearest => 8, |
| 387 | VPMBType::GoldenNear => 9, |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | pub fn expand_token_bc(bc: &mut BoolCoder, val_probs: &[u8; 11], token: u8, version: u8) -> i16 { |
| 392 | let mut sign = false; |
| 393 | let level; |
| 394 | if token < TOKEN_LARGE { |
| 395 | if token != 0 { |
| 396 | sign = bc.read_bool(); |
| 397 | } |
| 398 | level = i16::from(token); |
| 399 | } else { |
| 400 | let cat: usize = vp_tree!(bc, val_probs[6], |
| 401 | vp_tree!(bc, val_probs[7], 0, 1), |
| 402 | vp_tree!(bc, val_probs[8], |
| 403 | vp_tree!(bc, val_probs[9], 2, 3), |
| 404 | vp_tree!(bc, val_probs[10], 4, 5))); |
| 405 | if version == 5 { |
| 406 | sign = bc.read_bool(); |
| 407 | } |
| 408 | let mut add = 0i16; |
| 409 | let add_probs = &VP56_COEF_ADD_PROBS[cat]; |
| 410 | for prob in add_probs.iter() { |
| 411 | if *prob == 128 { break; } |
| 412 | add = (add << 1) | (bc.read_prob(*prob) as i16); |
| 413 | } |
| 414 | if version != 5 { |
| 415 | sign = bc.read_bool(); |
| 416 | } |
| 417 | level = VP56_COEF_BASE[cat] + add; |
| 418 | } |
| 419 | if !sign { |
| 420 | level |
| 421 | } else { |
| 422 | -level |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | impl VP56Decoder { |
| 427 | pub fn new(version: u8, has_alpha: bool, flip: bool) -> Self { |
| 428 | let vt = alloc_video_buffer(NAVideoInfo::new(24, 24, false, VP_YUVA420_FORMAT), 4).unwrap(); |
| 429 | let mc_buf = vt.get_vbuf().unwrap(); |
| 430 | Self { |
| 431 | version, has_alpha, flip, |
| 432 | shuf: VPShuffler::new(), |
| 433 | width: 0, |
| 434 | height: 0, |
| 435 | mb_w: 0, |
| 436 | mb_h: 0, |
| 437 | models: VP56Models::new(), |
| 438 | amodels: VP56Models::new(), |
| 439 | coeffs: [[0; 64]; 6], |
| 440 | last_mbt: VPMBType::InterNoMV, |
| 441 | |
| 442 | loop_thr: 0, |
| 443 | ilace_prob: 0, |
| 444 | ilace_mb: false, |
| 445 | |
| 446 | mb_info: Vec::new(), |
| 447 | fstate: FrameState::new(), |
| 448 | dc_pred: VP56DCPred::new(), |
| 449 | last_dc: [[0; 4]; 3], |
| 450 | top_ctx: [Vec::new(), Vec::new(), Vec::new(), Vec::new()], |
| 451 | |
| 452 | mc_buf, |
| 453 | } |
| 454 | } |
| 455 | fn set_dimensions(&mut self, width: usize, height: usize) { |
| 456 | self.width = width; |
| 457 | self.height = height; |
| 458 | self.mb_w = (self.width + 15) >> 4; |
| 459 | self.mb_h = (self.height + 15) >> 4; |
| 460 | self.mb_info.resize(self.mb_w * self.mb_h, MBInfo::default()); |
| 461 | self.top_ctx = [vec![0; self.mb_w * 2], vec![0; self.mb_w], vec![0; self.mb_w], vec![0; self.mb_w * 2]]; |
| 462 | } |
| 463 | pub fn init(&mut self, supp: &mut NADecoderSupport, vinfo: NAVideoInfo) -> DecoderResult<()> { |
| 464 | supp.pool_u8.set_dec_bufs(3 + if vinfo.get_format().has_alpha() { 1 } else { 0 }); |
| 465 | supp.pool_u8.prealloc_video(NAVideoInfo::new(vinfo.get_width(), vinfo.get_height(), false, vinfo.get_format()), 4)?; |
| 466 | self.set_dimensions(vinfo.get_width(), vinfo.get_height()); |
| 467 | self.dc_pred.resize(self.mb_w); |
| 468 | Ok(()) |
| 469 | } |
| 470 | pub fn flush(&mut self) { |
| 471 | self.shuf.clear(); |
| 472 | } |
| 473 | pub fn decode_frame(&mut self, supp: &mut NADecoderSupport, src: &[u8], br: &mut dyn VP56Parser) -> DecoderResult<(NABufferType, FrameType)> { |
| 474 | let aoffset; |
| 475 | let mut bc; |
| 476 | if self.has_alpha { |
| 477 | validate!(src.len() >= 7); |
| 478 | aoffset = ((src[0] as usize) << 16) | ((src[1] as usize) << 8) | (src[2] as usize); |
| 479 | validate!((aoffset > 0) && (aoffset < src.len() - 3)); |
| 480 | bc = BoolCoder::new(&src[3..])?; |
| 481 | } else { |
| 482 | validate!(src.len() >= 4); |
| 483 | aoffset = src.len(); |
| 484 | bc = BoolCoder::new(src)?; |
| 485 | } |
| 486 | let hdr = br.parse_header(&mut bc)?; |
| 487 | validate!((hdr.offset as usize) < aoffset); //XXX: take alpha 3 byte offset into account? |
| 488 | |
| 489 | if hdr.mb_w != 0 && (usize::from(hdr.mb_w) != self.mb_w || usize::from(hdr.mb_h) != self.mb_h) { |
| 490 | self.set_dimensions((hdr.mb_w as usize) * 16, (hdr.mb_h as usize) * 16); |
| 491 | } |
| 492 | let fmt = if !self.has_alpha { |
| 493 | YUV420_FORMAT |
| 494 | } else { |
| 495 | VP_YUVA420_FORMAT |
| 496 | }; |
| 497 | let vinfo = NAVideoInfo::new(self.width, self.height, self.flip, fmt); |
| 498 | let ret = supp.pool_u8.get_free(); |
| 499 | if ret.is_none() { |
| 500 | return Err(DecoderError::AllocError); |
| 501 | } |
| 502 | let mut buf = ret.unwrap(); |
| 503 | if buf.get_info() != vinfo { |
| 504 | self.shuf.clear(); |
| 505 | supp.pool_u8.reset(); |
| 506 | supp.pool_u8.prealloc_video(vinfo, 4)?; |
| 507 | let ret = supp.pool_u8.get_free(); |
| 508 | if ret.is_none() { |
| 509 | return Err(DecoderError::AllocError); |
| 510 | } |
| 511 | buf = ret.unwrap(); |
| 512 | } |
| 513 | let mut dframe = NASimpleVideoFrame::from_video_buf(&mut buf).unwrap(); |
| 514 | |
| 515 | if hdr.is_intra { |
| 516 | self.shuf.clear(); |
| 517 | } else { |
| 518 | if !self.shuf.has_refs() { |
| 519 | return Err(DecoderError::MissingReference); |
| 520 | } |
| 521 | } |
| 522 | |
| 523 | let psrc = &src[if self.has_alpha { 3 } else { 0 }..aoffset]; |
| 524 | self.decode_planes(br, &mut dframe, &mut bc, &hdr, psrc, false)?; |
| 525 | |
| 526 | if self.has_alpha { |
| 527 | let asrc = &src[aoffset + 3..]; |
| 528 | let mut bc = BoolCoder::new(asrc)?; |
| 529 | let ahdr = br.parse_header(&mut bc)?; |
| 530 | validate!(ahdr.mb_w == hdr.mb_w && ahdr.mb_h == hdr.mb_h); |
| 531 | std::mem::swap(&mut self.models, &mut self.amodels); |
| 532 | let ret = self.decode_planes(br, &mut dframe, &mut bc, &ahdr, asrc, true); |
| 533 | std::mem::swap(&mut self.models, &mut self.amodels); |
| 534 | if let Err(err) = ret { |
| 535 | return Err(err); |
| 536 | } |
| 537 | match (hdr.is_golden, ahdr.is_golden) { |
| 538 | (true, true) => { self.shuf.add_golden_frame(buf.clone()); }, |
| 539 | (true, false) => { |
| 540 | let cur_golden = self.shuf.get_golden().unwrap(); |
| 541 | let off = cur_golden.get_offset(3); |
| 542 | let stride = cur_golden.get_stride(3); |
| 543 | let mut new_golden = supp.pool_u8.get_copy(&buf).unwrap(); |
| 544 | let dst = new_golden.get_data_mut().unwrap(); |
| 545 | let src = cur_golden.get_data(); |
| 546 | dst[off..][..stride * self.mb_h * 16].copy_from_slice(&src[off..][..stride * self.mb_h * 16]); |
| 547 | self.shuf.add_golden_frame(new_golden); |
| 548 | }, |
| 549 | (false, true) => { |
| 550 | let cur_golden = self.shuf.get_golden().unwrap(); |
| 551 | let off = cur_golden.get_offset(3); |
| 552 | let stride = cur_golden.get_stride(3); |
| 553 | let mut new_golden = supp.pool_u8.get_copy(&cur_golden).unwrap(); |
| 554 | let dst = new_golden.get_data_mut().unwrap(); |
| 555 | let src = buf.get_data(); |
| 556 | dst[off..][..stride * self.mb_h * 16].copy_from_slice(&src[off..][..stride * self.mb_h * 16]); |
| 557 | self.shuf.add_golden_frame(new_golden); |
| 558 | }, |
| 559 | _ => {}, |
| 560 | }; |
| 561 | } |
| 562 | |
| 563 | if hdr.is_golden && !self.has_alpha { |
| 564 | self.shuf.add_golden_frame(buf.clone()); |
| 565 | } |
| 566 | self.shuf.add_frame(buf.clone()); |
| 567 | |
| 568 | Ok((NABufferType::Video(buf), if hdr.is_intra { FrameType::I } else { FrameType::P })) |
| 569 | } |
| 570 | fn decode_planes(&mut self, br: &mut dyn VP56Parser, dframe: &mut NASimpleVideoFrame<u8>, bc: &mut BoolCoder, hdr: &VP56Header, src: &[u8], alpha: bool) -> DecoderResult<()> { |
| 571 | let mut cr; |
| 572 | if hdr.multistream { |
| 573 | let off = hdr.offset as usize; |
| 574 | if !hdr.use_huffman { |
| 575 | let bc2 = BoolCoder::new(&src[off..])?; |
| 576 | cr = CoeffReader::Bool(bc2); |
| 577 | } else { |
| 578 | let br = BitReader::new(&src[off..], BitReaderMode::BE); |
| 579 | cr = CoeffReader::Huff(br); |
| 580 | } |
| 581 | } else { |
| 582 | cr = CoeffReader::None; |
| 583 | } |
| 584 | |
| 585 | if hdr.is_intra { |
| 586 | br.reset_models(&mut self.models); |
| 587 | self.reset_mbtype_models(); |
| 588 | } else { |
| 589 | self.decode_mode_prob_models(bc)?; |
| 590 | br.decode_mv_models(bc, &mut self.models.mv_models)?; |
| 591 | } |
| 592 | br.decode_coeff_models(bc, &mut self.models, hdr.is_intra)?; |
| 593 | if hdr.use_huffman { |
| 594 | for i in 0..2 { |
| 595 | self.models.vp6huff.dc_token_tree[i].build_codes(&self.models.coeff_models[i].dc_value_probs); |
| 596 | } |
| 597 | for i in 0..2 { |
| 598 | for mode in 0..3 { |
| 599 | for band in 0..6 { |
| 600 | self.models.vp6huff.ac_token_tree[i][mode][band].build_codes(&self.models.coeff_models[i].ac_val_probs[mode][band]); |
| 601 | } |
| 602 | } |
| 603 | } |
| 604 | for i in 0..2 { |
| 605 | self.models.vp6huff.zero_run_tree[i].build_codes_zero_run(&self.models.vp6models.zero_run_probs[i]); |
| 606 | } |
| 607 | } |
| 608 | |
| 609 | if hdr.interlaced { |
| 610 | self.ilace_prob = bc.read_bits(8) as u8; |
| 611 | } |
| 612 | |
| 613 | self.fstate = FrameState::new(); |
| 614 | self.fstate.dc_quant = VP56_DC_QUANTS[hdr.quant as usize] * 4; |
| 615 | self.fstate.ac_quant = VP56_AC_QUANTS[hdr.quant as usize] * 4; |
| 616 | self.loop_thr = i16::from(VP56_FILTER_LIMITS[hdr.quant as usize]); |
| 617 | |
| 618 | self.last_mbt = VPMBType::InterNoMV; |
| 619 | for vec in self.top_ctx.iter_mut() { |
| 620 | for el in vec.iter_mut() { |
| 621 | *el = 0; |
| 622 | } |
| 623 | } |
| 624 | self.last_dc = [[0; 4]; 3]; |
| 625 | self.last_dc[0][1] = 0x80; |
| 626 | self.last_dc[0][2] = 0x80; |
| 627 | self.dc_pred.reset(); |
| 628 | |
| 629 | self.ilace_mb = false; |
| 630 | for mb_y in 0..self.mb_h { |
| 631 | self.fstate.mb_y = mb_y; |
| 632 | self.fstate.coeff_cat = [[0; 64]; 4]; |
| 633 | self.fstate.last_idx = [24; 4]; |
| 634 | for mb_x in 0..self.mb_w { |
| 635 | self.fstate.mb_x = mb_x; |
| 636 | self.decode_mb(dframe, bc, &mut cr, br, &hdr, alpha)?; |
| 637 | self.dc_pred.next_mb(); |
| 638 | } |
| 639 | self.dc_pred.update_row(); |
| 640 | } |
| 641 | Ok(()) |
| 642 | } |
| 643 | fn reset_mbtype_models(&mut self) { |
| 644 | const DEFAULT_XMITTED_PROBS: [[u8; 20]; 3] = [ |
| 645 | [ 42, 69, 2, 1, 7, 1, 42, 44, 22, 6, 3, 1, 2, 0, 5, 1, 1, 0, 0, 0 ], |
| 646 | [ 8, 229, 1, 1, 8, 0, 0, 0, 0, 0, 2, 1, 1, 0, 0, 0, 1, 1, 0, 0 ], |
| 647 | [ 35, 122, 1, 1, 6, 1, 34, 46, 0, 0, 2, 1, 1, 0, 1, 0, 1, 1, 0, 0 ] |
| 648 | ]; |
| 649 | self.models.prob_xmitted.copy_from_slice(&DEFAULT_XMITTED_PROBS); |
| 650 | } |
| 651 | fn decode_mode_prob_models(&mut self, bc: &mut BoolCoder) -> DecoderResult<()> { |
| 652 | for ctx in 0..3 { |
| 653 | if bc.read_prob(174) { |
| 654 | let idx = bc.read_bits(4) as usize; |
| 655 | for i in 0..20 { |
| 656 | self.models.prob_xmitted[ctx][i ^ 1] = VP56_MODE_VQ[ctx][idx][i]; |
| 657 | } |
| 658 | } |
| 659 | if bc.read_prob(254) { |
| 660 | for set in 0..20 { |
| 661 | if bc.read_prob(205) { |
| 662 | let sign = bc.read_bool(); |
| 663 | let diff = vp_tree!(bc, 171, |
| 664 | vp_tree!(bc, 83, 2, 1), |
| 665 | vp_tree!(bc, 199, |
| 666 | vp_tree!(bc, 140, |
| 667 | vp_tree!(bc, 125, |
| 668 | vp_tree!(bc, 104, 6, 5), |
| 669 | 4 |
| 670 | ), |
| 671 | 3 |
| 672 | ), |
| 673 | bc.read_bits(7) |
| 674 | )) * 4; |
| 675 | validate!(diff < 256); |
| 676 | let diff = diff as u8; |
| 677 | if !sign { |
| 678 | validate!(self.models.prob_xmitted[ctx][set ^ 1] <= 255 - diff); |
| 679 | self.models.prob_xmitted[ctx][set ^ 1] += diff; |
| 680 | } else { |
| 681 | validate!(self.models.prob_xmitted[ctx][set ^ 1] >= diff); |
| 682 | self.models.prob_xmitted[ctx][set ^ 1] -= diff; |
| 683 | } |
| 684 | } |
| 685 | } |
| 686 | } |
| 687 | } |
| 688 | for ctx in 0..3 { |
| 689 | let prob_xmitted = &self.models.prob_xmitted[ctx]; |
| 690 | for mode in 0..10 { |
| 691 | let mdl = &mut self.models.mbtype_models[ctx][mode]; |
| 692 | let mut cnt = [0u32; 10]; |
| 693 | let mut total = 0; |
| 694 | for i in 0..10 { |
| 695 | if i == mode { continue; } |
| 696 | cnt[i] = 100 * u32::from(prob_xmitted[i * 2]); |
| 697 | total += cnt[i]; |
| 698 | } |
| 699 | let sum = u32::from(prob_xmitted[mode * 2]) + u32::from(prob_xmitted[mode * 2 + 1]); |
| 700 | mdl.probs[9] = 255 - rescale_mb_mode_prob(u32::from(prob_xmitted[mode * 2 + 1]), sum); |
| 701 | |
| 702 | let inter_mv0_weight = (cnt[0] as u32) + (cnt[2] as u32); |
| 703 | let inter_mv1_weight = (cnt[3] as u32) + (cnt[4] as u32); |
| 704 | let gold_mv0_weight = (cnt[5] as u32) + (cnt[6] as u32); |
| 705 | let gold_mv1_weight = (cnt[8] as u32) + (cnt[9] as u32); |
| 706 | let mix_weight = (cnt[1] as u32) + (cnt[7] as u32); |
| 707 | mdl.probs[0] = 1 + rescale_mb_mode_prob(inter_mv0_weight + inter_mv1_weight, total); |
| 708 | mdl.probs[1] = 1 + rescale_mb_mode_prob(inter_mv0_weight, inter_mv0_weight + inter_mv1_weight); |
| 709 | mdl.probs[2] = 1 + rescale_mb_mode_prob(mix_weight, mix_weight + gold_mv0_weight + gold_mv1_weight); |
| 710 | mdl.probs[3] = 1 + rescale_mb_mode_prob(cnt[0] as u32, inter_mv0_weight); |
| 711 | mdl.probs[4] = 1 + rescale_mb_mode_prob(cnt[3] as u32, inter_mv1_weight); |
| 712 | mdl.probs[5] = 1 + rescale_mb_mode_prob(cnt[1], mix_weight); |
| 713 | mdl.probs[6] = 1 + rescale_mb_mode_prob(gold_mv0_weight, gold_mv0_weight + gold_mv1_weight); |
| 714 | mdl.probs[7] = 1 + rescale_mb_mode_prob(cnt[5], gold_mv0_weight); |
| 715 | mdl.probs[8] = 1 + rescale_mb_mode_prob(cnt[8], gold_mv1_weight); |
| 716 | } |
| 717 | } |
| 718 | Ok(()) |
| 719 | } |
| 720 | fn find_mv_pred(&self, ref_id: u8) -> (usize, MV, MV, MV) { |
| 721 | const CAND_POS: [(i8, i8); 12] = [ |
| 722 | (-1, 0), ( 0, -1), |
| 723 | (-1, -1), (-1, 1), |
| 724 | (-2, 0), ( 0, -2), |
| 725 | (-1, -2), (-2, -1), |
| 726 | (-2, 1), (-1, 2), |
| 727 | (-2, -2), (-2, 2) |
| 728 | ]; |
| 729 | |
| 730 | let mut nearest_mv = ZERO_MV; |
| 731 | let mut near_mv = ZERO_MV; |
| 732 | let mut pred_mv = ZERO_MV; |
| 733 | let mut num_mv: usize = 0; |
| 734 | |
| 735 | for (i, (yoff, xoff)) in CAND_POS.iter().enumerate() { |
| 736 | let cx = (self.fstate.mb_x as isize) + (*xoff as isize); |
| 737 | let cy = (self.fstate.mb_y as isize) + (*yoff as isize); |
| 738 | if (cx < 0) || (cy < 0) { |
| 739 | continue; |
| 740 | } |
| 741 | let cx = cx as usize; |
| 742 | let cy = cy as usize; |
| 743 | if (cx >= self.mb_w) || (cy >= self.mb_h) { |
| 744 | continue; |
| 745 | } |
| 746 | let mb_pos = cx + cy * self.mb_w; |
| 747 | let mv = self.mb_info[mb_pos].mv; |
| 748 | if (self.mb_info[mb_pos].mb_type.get_ref_id() != ref_id) || (mv == ZERO_MV) { |
| 749 | continue; |
| 750 | } |
| 751 | if num_mv == 0 { |
| 752 | nearest_mv = mv; |
| 753 | num_mv += 1; |
| 754 | if (self.version > 5) && (i < 2) { |
| 755 | pred_mv = mv; |
| 756 | } |
| 757 | } else if mv != nearest_mv { |
| 758 | near_mv = mv; |
| 759 | num_mv += 1; |
| 760 | break; |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | (num_mv, nearest_mv, near_mv, pred_mv) |
| 765 | } |
| 766 | fn decode_mv(&self, bc: &mut BoolCoder, br: &mut dyn VP56Parser) -> MV { |
| 767 | let x = br.decode_mv(bc, &self.models.mv_models[0]); |
| 768 | let y = br.decode_mv(bc, &self.models.mv_models[1]); |
| 769 | MV{ x, y } |
| 770 | } |
| 771 | fn decode_mb_type(&mut self, bc: &mut BoolCoder, ctx: usize) -> DecoderResult<VPMBType> { |
| 772 | let probs = &self.models.mbtype_models[ctx][map_mb_type(self.last_mbt)].probs; |
| 773 | if !bc.read_prob(probs[9]) { |
| 774 | self.last_mbt = vp_tree!( |
| 775 | bc, probs[0], |
| 776 | vp_tree!(bc, probs[1], |
| 777 | vp_tree!(bc, probs[3], VPMBType::InterNoMV, VPMBType::InterMV), |
| 778 | vp_tree!(bc, probs[4], VPMBType::InterNearest, VPMBType::InterNear) |
| 779 | ), |
| 780 | vp_tree!(bc, probs[2], |
| 781 | vp_tree!(bc, probs[5], VPMBType::Intra, VPMBType::InterFourMV), |
| 782 | vp_tree!(bc, probs[6], |
| 783 | vp_tree!(bc, probs[7], VPMBType::GoldenNoMV, VPMBType::GoldenMV), |
| 784 | vp_tree!(bc, probs[8], VPMBType::GoldenNearest, VPMBType::GoldenNear) |
| 785 | ) |
| 786 | ) |
| 787 | ); |
| 788 | } |
| 789 | Ok(self.last_mbt) |
| 790 | } |
| 791 | #[allow(clippy::cognitive_complexity)] |
| 792 | fn decode_mb(&mut self, frm: &mut NASimpleVideoFrame<u8>, bc: &mut BoolCoder, cr: &mut CoeffReader, br: &mut dyn VP56Parser, hdr: &VP56Header, alpha: bool) -> DecoderResult<()> { |
| 793 | const FOURMV_SUB_TYPE: [VPMBType; 4] = [ VPMBType::InterNoMV, VPMBType::InterMV, VPMBType::InterNearest, VPMBType::InterNear ]; |
| 794 | |
| 795 | let mb_x = self.fstate.mb_x; |
| 796 | let mb_y = self.fstate.mb_y; |
| 797 | self.coeffs = [[0; 64]; 6]; |
| 798 | let mb_pos = mb_x + mb_y * self.mb_w; |
| 799 | let mut four_mv = [ZERO_MV; 4]; |
| 800 | let mut four_mbt = [VPMBType::Intra; 4]; |
| 801 | |
| 802 | if hdr.interlaced { |
| 803 | let iprob = self.ilace_prob; |
| 804 | let prob = if mb_x == 0 { |
| 805 | iprob |
| 806 | } else if !self.ilace_mb { |
| 807 | iprob + (((256 - u16::from(iprob)) >> 1) as u8) |
| 808 | } else { |
| 809 | iprob - (iprob >> 1) |
| 810 | }; |
| 811 | self.ilace_mb = bc.read_prob(prob); |
| 812 | } |
| 813 | |
| 814 | let (num_mv, nearest_mv, near_mv, pred_mv) = if hdr.is_intra { |
| 815 | (0, ZERO_MV, ZERO_MV, ZERO_MV) |
| 816 | } else { self.find_mv_pred(VP_REF_INTER) }; |
| 817 | let mb_type = if hdr.is_intra { |
| 818 | VPMBType::Intra |
| 819 | } else { |
| 820 | self.decode_mb_type(bc, (num_mv + 1) % 3)? |
| 821 | }; |
| 822 | self.mb_info[mb_pos].mb_type = mb_type; |
| 823 | if mb_type.get_ref_id() != VP_REF_GOLDEN { |
| 824 | match mb_type { |
| 825 | VPMBType::Intra | |
| 826 | VPMBType::InterNoMV => { |
| 827 | self.mb_info[mb_pos].mv = ZERO_MV; |
| 828 | }, |
| 829 | VPMBType::InterMV => { |
| 830 | let diff_mv = self.decode_mv(bc, br); |
| 831 | self.mb_info[mb_pos].mv = pred_mv + diff_mv; |
| 832 | }, |
| 833 | VPMBType::InterNearest => { |
| 834 | self.mb_info[mb_pos].mv = nearest_mv; |
| 835 | }, |
| 836 | VPMBType::InterNear => { |
| 837 | self.mb_info[mb_pos].mv = near_mv; |
| 838 | }, |
| 839 | VPMBType::InterFourMV => { |
| 840 | for i in 0..4 { |
| 841 | four_mbt[i] = FOURMV_SUB_TYPE[bc.read_bits(2) as usize]; |
| 842 | } |
| 843 | for i in 0..4 { |
| 844 | match four_mbt[i] { |
| 845 | VPMBType::InterNoMV => {}, |
| 846 | VPMBType::InterMV => { |
| 847 | let diff_mv = self.decode_mv(bc, br); |
| 848 | four_mv[i] = pred_mv + diff_mv; |
| 849 | }, |
| 850 | VPMBType::InterNearest => { |
| 851 | four_mv[i] = nearest_mv; |
| 852 | }, |
| 853 | VPMBType::InterNear => { |
| 854 | four_mv[i] = near_mv; |
| 855 | }, |
| 856 | _ => unreachable!(), |
| 857 | }; |
| 858 | } |
| 859 | self.mb_info[mb_pos].mv = four_mv[3]; |
| 860 | }, |
| 861 | _ => unreachable!(), |
| 862 | }; |
| 863 | } else { |
| 864 | let (_num_mv, nearest_mv, near_mv, pred_mv) = self.find_mv_pred(VP_REF_GOLDEN); |
| 865 | match mb_type { |
| 866 | VPMBType::GoldenNoMV => { |
| 867 | self.mb_info[mb_pos].mv = ZERO_MV; |
| 868 | }, |
| 869 | VPMBType::GoldenMV => { |
| 870 | let diff_mv = self.decode_mv(bc, br); |
| 871 | self.mb_info[mb_pos].mv = pred_mv + diff_mv; |
| 872 | }, |
| 873 | VPMBType::GoldenNearest => { |
| 874 | self.mb_info[mb_pos].mv = nearest_mv; |
| 875 | }, |
| 876 | VPMBType::GoldenNear => { |
| 877 | self.mb_info[mb_pos].mv = near_mv; |
| 878 | }, |
| 879 | _ => unreachable!(), |
| 880 | }; |
| 881 | } |
| 882 | if !mb_type.is_intra() && (mb_type != VPMBType::InterFourMV) { |
| 883 | self.do_mc(br, frm, mb_type, self.mb_info[mb_pos].mv, alpha); |
| 884 | } else if mb_type == VPMBType::InterFourMV { |
| 885 | self.do_fourmv(br, frm, &four_mv, alpha); |
| 886 | } |
| 887 | |
| 888 | for blk_no in 0..4 { |
| 889 | self.fstate.plane = if !alpha { 0 } else { 3 }; |
| 890 | self.fstate.ctx_idx = blk_no >> 1; |
| 891 | self.fstate.top_ctx = self.top_ctx[self.fstate.plane][mb_x * 2 + (blk_no & 1)]; |
| 892 | match cr { |
| 893 | CoeffReader::None => { |
| 894 | br.decode_block(bc, &mut self.coeffs[blk_no], &self.models.coeff_models[0], &self.models.vp6models, &mut self.fstate)?; |
| 895 | }, |
| 896 | CoeffReader::Bool(ref mut bcc) => { |
| 897 | br.decode_block(bcc, &mut self.coeffs[blk_no], &self.models.coeff_models[0], &self.models.vp6models, &mut self.fstate)?; |
| 898 | }, |
| 899 | CoeffReader::Huff(ref mut brc) => { |
| 900 | br.decode_block_huff(brc, &mut self.coeffs[blk_no], &self.models.vp6models, &self.models.vp6huff, &mut self.fstate)?; |
| 901 | }, |
| 902 | }; |
| 903 | self.top_ctx[self.fstate.plane][mb_x * 2 + (blk_no & 1)] = self.fstate.top_ctx; |
| 904 | self.predict_dc(mb_type, mb_pos, blk_no, alpha); |
| 905 | |
| 906 | let bx = mb_x * 2 + (blk_no & 1); |
| 907 | let by = mb_y * 2 + (blk_no >> 1); |
| 908 | let has_ac = self.fstate.last_idx[self.fstate.ctx_idx] > 0; |
| 909 | if mb_type.is_intra() { |
| 910 | if !self.ilace_mb { |
| 911 | if has_ac { |
| 912 | vp_put_block(&mut self.coeffs[blk_no], bx, by, self.fstate.plane, frm); |
| 913 | } else { |
| 914 | vp_put_block_dc(&mut self.coeffs[blk_no], bx, by, self.fstate.plane, frm); |
| 915 | } |
| 916 | } else { |
| 917 | vp_put_block_ilace(&mut self.coeffs[blk_no], bx, by, self.fstate.plane, frm); |
| 918 | } |
| 919 | } else { |
| 920 | if !self.ilace_mb { |
| 921 | if has_ac { |
| 922 | vp_add_block(&mut self.coeffs[blk_no], bx, by, self.fstate.plane, frm); |
| 923 | } else { |
| 924 | vp_add_block_dc(&mut self.coeffs[blk_no], bx, by, self.fstate.plane, frm); |
| 925 | } |
| 926 | } else { |
| 927 | vp_add_block_ilace(&mut self.coeffs[blk_no], bx, by, self.fstate.plane, frm); |
| 928 | } |
| 929 | } |
| 930 | } |
| 931 | for blk_no in 4..6 { |
| 932 | self.fstate.plane = blk_no - 3; |
| 933 | self.fstate.ctx_idx = blk_no - 2; |
| 934 | self.fstate.top_ctx = self.top_ctx[self.fstate.plane][mb_x]; |
| 935 | match cr { |
| 936 | CoeffReader::None => { |
| 937 | br.decode_block(bc, &mut self.coeffs[blk_no], &self.models.coeff_models[1], &self.models.vp6models, &mut self.fstate)?; |
| 938 | }, |
| 939 | CoeffReader::Bool(ref mut bcc) => { |
| 940 | br.decode_block(bcc, &mut self.coeffs[blk_no], &self.models.coeff_models[1], &self.models.vp6models, &mut self.fstate)?; |
| 941 | }, |
| 942 | CoeffReader::Huff(ref mut brc) => { |
| 943 | br.decode_block_huff(brc, &mut self.coeffs[blk_no], &self.models.vp6models, &self.models.vp6huff, &mut self.fstate)?; |
| 944 | }, |
| 945 | }; |
| 946 | self.top_ctx[self.fstate.plane][mb_x] = self.fstate.top_ctx; |
| 947 | self.predict_dc(mb_type, mb_pos, blk_no, alpha); |
| 948 | if !alpha { |
| 949 | let has_ac = self.fstate.last_idx[self.fstate.ctx_idx] > 0; |
| 950 | if mb_type.is_intra() { |
| 951 | if has_ac { |
| 952 | vp_put_block(&mut self.coeffs[blk_no], mb_x, mb_y, self.fstate.plane, frm); |
| 953 | } else { |
| 954 | vp_put_block_dc(&mut self.coeffs[blk_no], mb_x, mb_y, self.fstate.plane, frm); |
| 955 | } |
| 956 | } else { |
| 957 | if has_ac { |
| 958 | vp_add_block(&mut self.coeffs[blk_no], mb_x, mb_y, self.fstate.plane, frm); |
| 959 | } else { |
| 960 | vp_add_block_dc(&mut self.coeffs[blk_no], mb_x, mb_y, self.fstate.plane, frm); |
| 961 | } |
| 962 | } |
| 963 | } |
| 964 | } |
| 965 | Ok(()) |
| 966 | } |
| 967 | fn do_mc(&mut self, br: &dyn VP56Parser, frm: &mut NASimpleVideoFrame<u8>, mb_type: VPMBType, mv: MV, alpha: bool) { |
| 968 | let x = self.fstate.mb_x * 16; |
| 969 | let y = self.fstate.mb_y * 16; |
| 970 | let plane = if !alpha { 0 } else { 3 }; |
| 971 | let src = if mb_type.get_ref_id() == VP_REF_INTER { |
| 972 | self.shuf.get_last().unwrap() |
| 973 | } else { |
| 974 | self.shuf.get_golden().unwrap() |
| 975 | }; |
| 976 | |
| 977 | br.mc_block(frm, self.mc_buf.clone(), src.clone(), plane, x + 0, y + 0, mv, self.loop_thr); |
| 978 | br.mc_block(frm, self.mc_buf.clone(), src.clone(), plane, x + 8, y + 0, mv, self.loop_thr); |
| 979 | br.mc_block(frm, self.mc_buf.clone(), src.clone(), plane, x + 0, y + 8, mv, self.loop_thr); |
| 980 | br.mc_block(frm, self.mc_buf.clone(), src.clone(), plane, x + 8, y + 8, mv, self.loop_thr); |
| 981 | if !alpha { |
| 982 | let x = self.fstate.mb_x * 8; |
| 983 | let y = self.fstate.mb_y * 8; |
| 984 | br.mc_block(frm, self.mc_buf.clone(), src.clone(), 1, x, y, mv, self.loop_thr); |
| 985 | br.mc_block(frm, self.mc_buf.clone(), src, 2, x, y, mv, self.loop_thr); |
| 986 | } |
| 987 | } |
| 988 | fn do_fourmv(&mut self, br: &dyn VP56Parser, frm: &mut NASimpleVideoFrame<u8>, mvs: &[MV; 4], alpha: bool) { |
| 989 | let x = self.fstate.mb_x * 16; |
| 990 | let y = self.fstate.mb_y * 16; |
| 991 | let plane = if !alpha { 0 } else { 3 }; |
| 992 | let src = self.shuf.get_last().unwrap(); |
| 993 | for blk_no in 0..4 { |
| 994 | br.mc_block(frm, self.mc_buf.clone(), src.clone(), |
| 995 | plane, x + (blk_no & 1) * 8, y + (blk_no & 2) * 4, |
| 996 | mvs[blk_no], self.loop_thr); |
| 997 | } |
| 998 | if !alpha { |
| 999 | let x = self.fstate.mb_x * 8; |
| 1000 | let y = self.fstate.mb_y * 8; |
| 1001 | let sum = mvs[0] + mvs[1] + mvs[2] + mvs[3]; |
| 1002 | let mv = MV { x: sum.x / 4, y: sum.y / 4 }; |
| 1003 | br.mc_block(frm, self.mc_buf.clone(), src.clone(), 1, x, y, mv, self.loop_thr); |
| 1004 | br.mc_block(frm, self.mc_buf.clone(), src, 2, x, y, mv, self.loop_thr); |
| 1005 | } |
| 1006 | } |
| 1007 | fn predict_dc(&mut self, mb_type: VPMBType, _mb_pos: usize, blk_no: usize, _alpha: bool) { |
| 1008 | let is_luma = blk_no < 4; |
| 1009 | let (plane, dcs) = match blk_no { |
| 1010 | 4 => (1, &mut self.dc_pred.dc_u), |
| 1011 | 5 => (2, &mut self.dc_pred.dc_v), |
| 1012 | _ => (0, &mut self.dc_pred.dc_y), |
| 1013 | }; |
| 1014 | let (dc_ref, dc_idx) = if is_luma { |
| 1015 | (&mut self.dc_pred.ref_y, self.dc_pred.y_idx + (blk_no & 1)) |
| 1016 | } else { |
| 1017 | (&mut self.dc_pred.ref_c, self.dc_pred.c_idx) |
| 1018 | }; |
| 1019 | let ref_id = mb_type.get_ref_id(); |
| 1020 | let mut dc_pred = 0; |
| 1021 | let mut count = 0; |
| 1022 | let has_left_blk = is_luma && ((blk_no & 1) == 1); |
| 1023 | if has_left_blk || self.dc_pred.ref_left == ref_id { |
| 1024 | dc_pred += match blk_no { |
| 1025 | 0 | 1 => self.dc_pred.ldc_y[0], |
| 1026 | 2 | 3 => self.dc_pred.ldc_y[1], |
| 1027 | 4 => self.dc_pred.ldc_u, |
| 1028 | _ => self.dc_pred.ldc_v, |
| 1029 | }; |
| 1030 | count += 1; |
| 1031 | } |
| 1032 | if dc_ref[dc_idx] == ref_id { |
| 1033 | dc_pred += dcs[dc_idx]; |
| 1034 | count += 1; |
| 1035 | } |
| 1036 | if self.version == 5 { |
| 1037 | if (count < 2) && (dc_ref[dc_idx - 1] == ref_id) { |
| 1038 | dc_pred += dcs[dc_idx - 1]; |
| 1039 | count += 1; |
| 1040 | } |
| 1041 | if (count < 2) && (dc_ref[dc_idx + 1] == ref_id) { |
| 1042 | dc_pred += dcs[dc_idx + 1]; |
| 1043 | count += 1; |
| 1044 | } |
| 1045 | } |
| 1046 | if count == 0 { |
| 1047 | dc_pred = self.last_dc[ref_id as usize][plane]; |
| 1048 | } else if count == 2 { |
| 1049 | dc_pred /= 2; |
| 1050 | } |
| 1051 | self.coeffs[blk_no][0] += dc_pred; |
| 1052 | |
| 1053 | let dc = self.coeffs[blk_no][0]; |
| 1054 | if blk_no != 4 { // update top block reference only for the second chroma component |
| 1055 | dc_ref[dc_idx] = ref_id; |
| 1056 | } |
| 1057 | match blk_no { |
| 1058 | 0 | 1 => { |
| 1059 | self.dc_pred.ldc_y[0] = dc; |
| 1060 | }, |
| 1061 | 2 | 3 => { |
| 1062 | self.dc_pred.ldc_y[1] = dc; |
| 1063 | }, |
| 1064 | 4 => { |
| 1065 | self.dc_pred.ldc_u = dc; |
| 1066 | }, |
| 1067 | _ => { |
| 1068 | self.dc_pred.ldc_v = dc; |
| 1069 | self.dc_pred.ref_left = ref_id; |
| 1070 | }, |
| 1071 | }; |
| 1072 | dcs[dc_idx] = dc; |
| 1073 | |
| 1074 | self.last_dc[ref_id as usize][plane] = dc; |
| 1075 | self.coeffs[blk_no][0] = self.coeffs[blk_no][0].wrapping_mul(self.fstate.dc_quant); |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | const VP56_DC_QUANTS: [i16; 64] = [ |
| 1080 | 47, 47, 47, 47, 45, 43, 43, 43, |
| 1081 | 43, 43, 42, 41, 41, 40, 40, 40, |
| 1082 | 40, 35, 35, 35, 35, 33, 33, 33, |
| 1083 | 33, 32, 32, 32, 27, 27, 26, 26, |
| 1084 | 25, 25, 24, 24, 23, 23, 19, 19, |
| 1085 | 19, 19, 18, 18, 17, 16, 16, 16, |
| 1086 | 16, 16, 15, 11, 11, 11, 10, 10, |
| 1087 | 9, 8, 7, 5, 3, 3, 2, 2 |
| 1088 | ]; |
| 1089 | const VP56_AC_QUANTS: [i16; 64] = [ |
| 1090 | 94, 92, 90, 88, 86, 82, 78, 74, |
| 1091 | 70, 66, 62, 58, 54, 53, 52, 51, |
| 1092 | 50, 49, 48, 47, 46, 45, 44, 43, |
| 1093 | 42, 40, 39, 37, 36, 35, 34, 33, |
| 1094 | 32, 31, 30, 29, 28, 27, 26, 25, |
| 1095 | 24, 23, 22, 21, 20, 19, 18, 17, |
| 1096 | 16, 15, 14, 13, 12, 11, 10, 9, |
| 1097 | 8, 7, 6, 5, 4, 3, 2, 1 |
| 1098 | ]; |
| 1099 | |
| 1100 | const VP56_FILTER_LIMITS: [u8; 64] = [ |
| 1101 | 14, 14, 13, 13, 12, 12, 10, 10, |
| 1102 | 10, 10, 8, 8, 8, 8, 8, 8, |
| 1103 | 8, 8, 8, 8, 8, 8, 8, 8, |
| 1104 | 8, 8, 8, 8, 8, 8, 8, 8, |
| 1105 | 8, 8, 8, 8, 7, 7, 7, 7, |
| 1106 | 7, 7, 6, 6, 6, 6, 6, 6, |
| 1107 | 5, 5, 5, 5, 4, 4, 4, 4, |
| 1108 | 4, 4, 4, 3, 3, 3, 3, 2 |
| 1109 | ]; |
| 1110 | |
| 1111 | const VP56_MODE_VQ: [[[u8; 20]; 16]; 3] = [ |
| 1112 | [ |
| 1113 | [ 9, 15, 32, 25, 7, 19, 9, 21, 1, 12, 14, 12, 3, 18, 14, 23, 3, 10, 0, 4 ], |
| 1114 | [ 48, 39, 1, 2, 11, 27, 29, 44, 7, 27, 1, 4, 0, 3, 1, 6, 1, 2, 0, 0 ], |
| 1115 | [ 21, 32, 1, 2, 4, 10, 32, 43, 6, 23, 2, 3, 1, 19, 1, 6, 12, 21, 0, 7 ], |
| 1116 | [ 69, 83, 0, 0, 0, 2, 10, 29, 3, 12, 0, 1, 0, 3, 0, 3, 2, 2, 0, 0 ], |
| 1117 | [ 11, 20, 1, 4, 18, 36, 43, 48, 13, 35, 0, 2, 0, 5, 3, 12, 1, 2, 0, 0 ], |
| 1118 | [ 70, 44, 0, 1, 2, 10, 37, 46, 8, 26, 0, 2, 0, 2, 0, 2, 0, 1, 0, 0 ], |
| 1119 | [ 8, 15, 0, 1, 8, 21, 74, 53, 22, 42, 0, 1, 0, 2, 0, 3, 1, 2, 0, 0 ], |
| 1120 | [ 141, 42, 0, 0, 1, 4, 11, 24, 1, 11, 0, 1, 0, 1, 0, 2, 0, 0, 0, 0 ], |
| 1121 | [ 8, 19, 4, 10, 24, 45, 21, 37, 9, 29, 0, 3, 1, 7, 11, 25, 0, 2, 0, 1 ], |
| 1122 | [ 46, 42, 0, 1, 2, 10, 54, 51, 10, 30, 0, 2, 0, 2, 0, 1, 0, 1, 0, 0 ], |
| 1123 | [ 28, 32, 0, 0, 3, 10, 75, 51, 14, 33, 0, 1, 0, 2, 0, 1, 1, 2, 0, 0 ], |
| 1124 | [ 100, 46, 0, 1, 3, 9, 21, 37, 5, 20, 0, 1, 0, 2, 1, 2, 0, 1, 0, 0 ], |
| 1125 | [ 27, 29, 0, 1, 9, 25, 53, 51, 12, 34, 0, 1, 0, 3, 1, 5, 0, 2, 0, 0 ], |
| 1126 | [ 80, 38, 0, 0, 1, 4, 69, 33, 5, 16, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0 ], |
| 1127 | [ 16, 20, 0, 0, 2, 8, 104, 49, 15, 33, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0 ], |
| 1128 | [ 194, 16, 0, 0, 1, 1, 1, 9, 1, 3, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0 ], |
| 1129 | ], [ |
| 1130 | [ 41, 22, 1, 0, 1, 31, 0, 0, 0, 0, 0, 1, 1, 7, 0, 1, 98, 25, 4, 10 ], |
| 1131 | [ 123, 37, 6, 4, 1, 27, 0, 0, 0, 0, 5, 8, 1, 7, 0, 1, 12, 10, 0, 2 ], |
| 1132 | [ 26, 14, 14, 12, 0, 24, 0, 0, 0, 0, 55, 17, 1, 9, 0, 36, 5, 7, 1, 3 ], |
| 1133 | [ 209, 5, 0, 0, 0, 27, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0 ], |
| 1134 | [ 2, 5, 4, 5, 0, 121, 0, 0, 0, 0, 0, 3, 2, 4, 1, 4, 2, 2, 0, 1 ], |
| 1135 | [ 175, 5, 0, 1, 0, 48, 0, 0, 0, 0, 0, 2, 0, 1, 0, 2, 0, 1, 0, 0 ], |
| 1136 | [ 83, 5, 2, 3, 0, 102, 0, 0, 0, 0, 1, 3, 0, 2, 0, 1, 0, 0, 0, 0 ], |
| 1137 | [ 233, 6, 0, 0, 0, 8, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0 ], |
| 1138 | [ 34, 16, 112, 21, 1, 28, 0, 0, 0, 0, 6, 8, 1, 7, 0, 3, 2, 5, 0, 2 ], |
| 1139 | [ 159, 35, 2, 2, 0, 25, 0, 0, 0, 0, 3, 6, 0, 5, 0, 1, 4, 4, 0, 1 ], |
| 1140 | [ 75, 39, 5, 7, 2, 48, 0, 0, 0, 0, 3, 11, 2, 16, 1, 4, 7, 10, 0, 2 ], |
| 1141 | [ 212, 21, 0, 1, 0, 9, 0, 0, 0, 0, 1, 2, 0, 2, 0, 0, 2, 2, 0, 0 ], |
| 1142 | [ 4, 2, 0, 0, 0, 172, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 2, 0, 0, 0 ], |
| 1143 | [ 187, 22, 1, 1, 0, 17, 0, 0, 0, 0, 3, 6, 0, 4, 0, 1, 4, 4, 0, 1 ], |
| 1144 | [ 133, 6, 1, 2, 1, 70, 0, 0, 0, 0, 0, 2, 0, 4, 0, 3, 1, 1, 0, 0 ], |
| 1145 | [ 251, 1, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ], |
| 1146 | ], [ |
| 1147 | [ 2, 3, 2, 3, 0, 2, 0, 2, 0, 0, 11, 4, 1, 4, 0, 2, 3, 2, 0, 4 ], |
| 1148 | [ 49, 46, 3, 4, 7, 31, 42, 41, 0, 0, 2, 6, 1, 7, 1, 4, 2, 4, 0, 1 ], |
| 1149 | [ 26, 25, 1, 1, 2, 10, 67, 39, 0, 0, 1, 1, 0, 14, 0, 2, 31, 26, 1, 6 ], |
| 1150 | [ 103, 46, 1, 2, 2, 10, 33, 42, 0, 0, 1, 4, 0, 3, 0, 1, 1, 3, 0, 0 ], |
| 1151 | [ 14, 31, 9, 13, 14, 54, 22, 29, 0, 0, 2, 6, 4, 18, 6, 13, 1, 5, 0, 1 ], |
| 1152 | [ 85, 39, 0, 0, 1, 9, 69, 40, 0, 0, 0, 1, 0, 3, 0, 1, 2, 3, 0, 0 ], |
| 1153 | [ 31, 28, 0, 0, 3, 14, 130, 34, 0, 0, 0, 1, 0, 3, 0, 1, 3, 3, 0, 1 ], |
| 1154 | [ 171, 25, 0, 0, 1, 5, 25, 21, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0 ], |
| 1155 | [ 17, 21, 68, 29, 6, 15, 13, 22, 0, 0, 6, 12, 3, 14, 4, 10, 1, 7, 0, 3 ], |
| 1156 | [ 51, 39, 0, 1, 2, 12, 91, 44, 0, 0, 0, 2, 0, 3, 0, 1, 2, 3, 0, 1 ], |
| 1157 | [ 81, 25, 0, 0, 2, 9, 106, 26, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0 ], |
| 1158 | [ 140, 37, 0, 1, 1, 8, 24, 33, 0, 0, 1, 2, 0, 2, 0, 1, 1, 2, 0, 0 ], |
| 1159 | [ 14, 23, 1, 3, 11, 53, 90, 31, 0, 0, 0, 3, 1, 5, 2, 6, 1, 2, 0, 0 ], |
| 1160 | [ 123, 29, 0, 0, 1, 7, 57, 30, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0 ], |
| 1161 | [ 13, 14, 0, 0, 4, 20, 175, 20, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0 ], |
| 1162 | [ 202, 23, 0, 0, 1, 3, 2, 9, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0 ], |
| 1163 | ] |
| 1164 | ]; |
| 1165 | |