| 1 | use nihav_core::formats::YUV420_FORMAT; |
| 2 | use nihav_core::frame::{NABufferType, NAVideoInfo, NAVideoBuffer, NAVideoBufferRef, FrameType, alloc_video_buffer}; |
| 3 | use nihav_core::codecs::{NADecoderSupport, DecoderError, DecoderResult}; |
| 4 | use nihav_codec_support::codecs::{MV, ZERO_MV, IPBShuffler}; |
| 5 | use nihav_core::io::bitreader::{BitReader,BitReaderMode}; |
| 6 | use nihav_core::io::intcode::*; |
| 7 | use nihav_codec_support::data::GenericCache; |
| 8 | use std::mem; |
| 9 | |
| 10 | use super::rv34codes::*; |
| 11 | use super::rv34dsp::*; |
| 12 | |
| 13 | trait RV34MVScale { |
| 14 | fn scale(&self, trd: u16, trb: u16) -> (MV, MV); |
| 15 | } |
| 16 | |
| 17 | const TR_SHIFT: u8 = 14; |
| 18 | const TR_BIAS: i32 = 1 << (TR_SHIFT - 1); |
| 19 | |
| 20 | impl RV34MVScale for MV { |
| 21 | fn scale(&self, trd: u16, trb: u16) -> (MV, MV) { |
| 22 | let ratio = ((trb as i32) << TR_SHIFT) / (trd as i32); |
| 23 | let mv_f = MV { |
| 24 | x: (((self.x as i32) * ratio + TR_BIAS) >> TR_SHIFT) as i16, |
| 25 | y: (((self.y as i32) * ratio + TR_BIAS) >> TR_SHIFT) as i16 |
| 26 | }; |
| 27 | let mv_b = mv_f - *self; |
| 28 | (mv_f, mv_b) |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | #[derive(Clone,Copy)] |
| 33 | pub struct RV34SliceHeader { |
| 34 | pub ftype: FrameType, |
| 35 | pub quant: u8, |
| 36 | pub pts: u16, |
| 37 | pub width: usize, |
| 38 | pub height: usize, |
| 39 | pub start: usize, |
| 40 | pub end: usize, |
| 41 | pub set_idx: usize, |
| 42 | pub deblock: bool, |
| 43 | } |
| 44 | |
| 45 | impl RV34SliceHeader { |
| 46 | pub fn fits(&self, cmp: &RV34SliceHeader) -> bool { |
| 47 | (self.ftype == cmp.ftype) && |
| 48 | (self.pts == cmp.pts) && |
| 49 | (self.width == cmp.width) && |
| 50 | (self.height == cmp.height) |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | #[allow(dead_code)] |
| 55 | #[derive(Debug,Clone,Copy,PartialEq)] |
| 56 | pub enum MBType { |
| 57 | MBIntra, |
| 58 | MBIntra16, |
| 59 | MBSkip, |
| 60 | MBP16x16, |
| 61 | MBP16x16Mix, |
| 62 | MBP16x8, |
| 63 | MBP8x16, |
| 64 | MBP8x8, |
| 65 | MBDirect, |
| 66 | MBBidir, |
| 67 | MBForward, |
| 68 | MBBackward, |
| 69 | Invalid, |
| 70 | } |
| 71 | |
| 72 | impl MBType { |
| 73 | pub fn is_intra(self) -> bool { |
| 74 | (self == MBType::MBIntra) || (self == MBType::MBIntra16) |
| 75 | } |
| 76 | pub fn is_16(self) -> bool { |
| 77 | (self == MBType::MBIntra16) || (self == MBType::MBP16x16Mix) |
| 78 | } |
| 79 | pub fn is_intra_or_16(self) -> bool { |
| 80 | self.is_intra() || self.is_16() |
| 81 | } |
| 82 | pub fn get_num_mvs(self) -> usize { |
| 83 | match self { |
| 84 | MBType::MBIntra | MBType::MBIntra16 | |
| 85 | MBType::MBSkip | MBType::MBDirect => 0, |
| 86 | MBType::MBP16x16 | MBType::MBP16x16Mix | |
| 87 | MBType::MBForward | MBType::MBBackward => 1, |
| 88 | MBType::MBP16x8 | MBType::MBP8x16 | MBType::MBBidir => 2, |
| 89 | MBType::MBP8x8 => 4, |
| 90 | MBType::Invalid => unreachable!(), |
| 91 | } |
| 92 | } |
| 93 | pub fn is_fwd(self) -> bool { |
| 94 | match self { |
| 95 | MBType::MBP16x16 | MBType::MBP16x16Mix | |
| 96 | MBType::MBP16x8 | MBType::MBP8x16 | MBType::MBP8x8 | |
| 97 | MBType::MBForward => true, |
| 98 | _ => false, |
| 99 | } |
| 100 | } |
| 101 | pub fn is_bwd(self) -> bool { |
| 102 | match self { |
| 103 | MBType::MBBidir | MBType::MBBackward => true, |
| 104 | _ => false, |
| 105 | } |
| 106 | } |
| 107 | pub fn has_mv_dir(self, fwd: bool) -> bool { |
| 108 | match self { |
| 109 | MBType::MBBidir => true, |
| 110 | MBType::MBForward if fwd => true, |
| 111 | MBType::MBBackward if !fwd => true, |
| 112 | _ => false, |
| 113 | } |
| 114 | } |
| 115 | pub fn is_nomv(self) -> bool { |
| 116 | match self { |
| 117 | MBType::MBIntra | MBType::MBIntra16 | MBType::MBSkip | MBType::MBDirect => true, |
| 118 | _ => false, |
| 119 | } |
| 120 | } |
| 121 | /*pub fn is_16x16(self) -> bool { |
| 122 | match self { |
| 123 | MBType::MBP16x8 | MBType::MBP8x16 | MBType::MBP8x8 => false, |
| 124 | _ => true, |
| 125 | } |
| 126 | }*/ |
| 127 | fn get_weight(self) -> usize { |
| 128 | match self { |
| 129 | MBType::MBIntra => 0, |
| 130 | MBType::MBIntra16 => 1, |
| 131 | MBType::MBSkip => unreachable!(), |
| 132 | MBType::MBP16x16 => 2, |
| 133 | MBType::MBP16x16Mix => 10, |
| 134 | MBType::MBP16x8 => 7, |
| 135 | MBType::MBP8x16 => 8, |
| 136 | MBType::MBP8x8 => 3, |
| 137 | MBType::MBDirect => 6, |
| 138 | MBType::MBBidir => 9, |
| 139 | MBType::MBForward => 4, |
| 140 | MBType::MBBackward => 5, |
| 141 | MBType::Invalid => unreachable!(), |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | const MBTYPE_FROM_WEIGHT: [MBType; 11] = [ |
| 147 | MBType::MBIntra, MBType::MBIntra16, MBType::MBP16x16, MBType::MBP8x8, |
| 148 | MBType::MBForward, MBType::MBBackward, MBType::MBDirect, MBType::MBP16x8, |
| 149 | MBType::MBP8x16, MBType::MBBidir, MBType::MBP16x16Mix, |
| 150 | ]; |
| 151 | |
| 152 | #[derive(Clone,Copy)] |
| 153 | pub struct MBInfo { |
| 154 | pub mbtype: MBType, |
| 155 | pub skip_run: usize, |
| 156 | pub dquant: bool, |
| 157 | } |
| 158 | |
| 159 | #[derive(Clone,Copy)] |
| 160 | pub struct RV34MBInfo { |
| 161 | pub mbtype: MBType, |
| 162 | pub cbp: u32, |
| 163 | pub deblock:u16, |
| 164 | pub cbp_c: u8, // for deblocking purposes |
| 165 | pub q: u8, |
| 166 | } |
| 167 | |
| 168 | struct IntraModeState { |
| 169 | cache: GenericCache<i8>, |
| 170 | } |
| 171 | |
| 172 | const RV34_INTRA_PRED4: [PredType4x4; 9] = [ |
| 173 | PredType4x4::DC, PredType4x4::Ver, PredType4x4::Hor, |
| 174 | PredType4x4::DiagDownRight, PredType4x4::DiagDownLeft, |
| 175 | PredType4x4::VerRight, PredType4x4::VerLeft, |
| 176 | PredType4x4::HorUp, PredType4x4::HorDown |
| 177 | ]; |
| 178 | |
| 179 | const RV34_INTRA_PRED16: [PredType8x8; 4] = [ |
| 180 | PredType8x8::DC, PredType8x8::Ver, PredType8x8::Hor, PredType8x8::Plane |
| 181 | ]; |
| 182 | |
| 183 | impl IntraModeState { |
| 184 | fn new(mb_w: usize) -> Self { |
| 185 | let stride = 1 + mb_w * 4 + 1; |
| 186 | IntraModeState { cache: GenericCache::new(4, stride, -1) } |
| 187 | } |
| 188 | fn reset(&mut self) { self.cache.reset(); } |
| 189 | fn update(&mut self) { self.cache.update_row(); } |
| 190 | fn get_pos(&self, xpos: usize) -> usize { |
| 191 | self.cache.stride + 1 + xpos * 4 |
| 192 | } |
| 193 | fn set_mb_x(&mut self, mb_x: usize) { |
| 194 | self.cache.xpos = self.get_pos(mb_x); |
| 195 | } |
| 196 | fn fill_block(&mut self, val: i8) { |
| 197 | let mut pos = self.cache.xpos; |
| 198 | for _ in 0..4 { |
| 199 | for j in 0..4 { |
| 200 | self.cache.data[pos + j] = val; |
| 201 | } |
| 202 | pos += self.cache.stride; |
| 203 | } |
| 204 | } |
| 205 | fn get_pred16_type(&self, has_top: bool, has_left: bool) -> PredType8x8 { |
| 206 | if !has_top && !has_left { return PredType8x8::DC128; } |
| 207 | let mut im = RV34_INTRA_PRED16[self.cache.data[self.cache.xpos] as usize]; |
| 208 | if !has_top { |
| 209 | im = match im { |
| 210 | PredType8x8::Plane | PredType8x8::Ver => PredType8x8::Hor, |
| 211 | PredType8x8::DC => PredType8x8::LeftDC, |
| 212 | _ => im, |
| 213 | }; |
| 214 | } else if !has_left { |
| 215 | im = match im { |
| 216 | PredType8x8::Plane | PredType8x8::Hor => PredType8x8::Ver, |
| 217 | PredType8x8::DC => PredType8x8::TopDC, |
| 218 | _ => im, |
| 219 | }; |
| 220 | } |
| 221 | im |
| 222 | } |
| 223 | fn get_pred8_type(&self, has_top: bool, has_left: bool) -> PredType8x8 { |
| 224 | if !has_top && !has_left { return PredType8x8::DC128; } |
| 225 | let mut im = RV34_INTRA_PRED16[self.cache.data[self.cache.xpos] as usize]; |
| 226 | im = match im { PredType8x8::Plane => PredType8x8::DC, _ => im }; |
| 227 | if !has_top { |
| 228 | im = match im { |
| 229 | PredType8x8::Plane | PredType8x8::Ver => PredType8x8::Hor, |
| 230 | PredType8x8::DC => PredType8x8::LeftDC, |
| 231 | _ => im, |
| 232 | }; |
| 233 | } else if !has_left { |
| 234 | im = match im { |
| 235 | PredType8x8::Plane | PredType8x8::Hor => PredType8x8::Ver, |
| 236 | PredType8x8::DC => PredType8x8::TopDC, |
| 237 | _ => im, |
| 238 | }; |
| 239 | } |
| 240 | im |
| 241 | } |
| 242 | fn get_pred4_type(&self, x: usize, y: usize, has_top: bool, has_left: bool) -> PredType4x4 { |
| 243 | let no_up = !has_top && (y == 0); |
| 244 | let no_left = !has_left && (x == 0); |
| 245 | if no_up && no_left { return PredType4x4::DC128; } |
| 246 | let no_down = !has_left || (x != 0) || (y == 3); |
| 247 | |
| 248 | let mut im = RV34_INTRA_PRED4[self.cache.data[self.cache.xpos + x + y * self.cache.stride] as usize]; |
| 249 | |
| 250 | if no_up { |
| 251 | im = match im { |
| 252 | PredType4x4::Ver => PredType4x4::Hor, |
| 253 | PredType4x4::DC => PredType4x4::LeftDC, |
| 254 | _ => im, |
| 255 | }; |
| 256 | } else if no_left { |
| 257 | im = match im { |
| 258 | PredType4x4::Hor => PredType4x4::Ver, |
| 259 | PredType4x4::DC => PredType4x4::TopDC, |
| 260 | PredType4x4::DiagDownLeft => PredType4x4::DiagDownLeftNoDown, |
| 261 | _ => im, |
| 262 | }; |
| 263 | } |
| 264 | if no_down { |
| 265 | im = match im { |
| 266 | PredType4x4::DiagDownLeft => PredType4x4::DiagDownLeftNoDown, |
| 267 | PredType4x4::HorUp => PredType4x4::HorUpNoDown, |
| 268 | PredType4x4::VerLeft => PredType4x4::VerLeftNoDown, |
| 269 | _ => im, |
| 270 | }; |
| 271 | } |
| 272 | im |
| 273 | } |
| 274 | //todo merge |
| 275 | fn get_pred4_type_chroma(&self, x: usize, y: usize, has_top: bool, has_left: bool) -> PredType4x4 { |
| 276 | let no_up = !has_top && (y == 0); |
| 277 | let no_left = !has_left && (x == 0); |
| 278 | if no_up && no_left { return PredType4x4::DC128; } |
| 279 | let no_down = !has_left || (x != 0) || (y == 1); |
| 280 | |
| 281 | let mut im = RV34_INTRA_PRED4[self.cache.data[self.cache.xpos + x * 2 + y * 2 * self.cache.stride] as usize]; |
| 282 | |
| 283 | if no_up { |
| 284 | im = match im { |
| 285 | PredType4x4::Ver => PredType4x4::Hor, |
| 286 | PredType4x4::DC => PredType4x4::LeftDC, |
| 287 | _ => im, |
| 288 | }; |
| 289 | } else if no_left { |
| 290 | im = match im { |
| 291 | PredType4x4::Hor => PredType4x4::Ver, |
| 292 | PredType4x4::DC => PredType4x4::TopDC, |
| 293 | PredType4x4::DiagDownLeft => PredType4x4::DiagDownLeftNoDown, |
| 294 | _ => im, |
| 295 | }; |
| 296 | } |
| 297 | if no_down { |
| 298 | im = match im { |
| 299 | PredType4x4::DiagDownLeft => PredType4x4::DiagDownLeftNoDown, |
| 300 | PredType4x4::HorUp => PredType4x4::HorUpNoDown, |
| 301 | PredType4x4::VerLeft => PredType4x4::VerLeftNoDown, |
| 302 | _ => im, |
| 303 | }; |
| 304 | } |
| 305 | im |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | pub struct MVInfo { |
| 310 | pub mv_b: Vec<MV>, |
| 311 | pub mv_f: Vec<MV>, |
| 312 | pub w: usize, |
| 313 | pub h: usize, |
| 314 | pub has_b: Vec<bool>, |
| 315 | pub has_f: Vec<bool>, |
| 316 | } |
| 317 | |
| 318 | impl MVInfo { |
| 319 | fn new() -> Self { |
| 320 | Self { mv_b: Vec::new(), mv_f: Vec::new(), w: 0, h: 0, has_b: Vec::new(), has_f: Vec::new() } |
| 321 | } |
| 322 | fn resize(&mut self, mb_w: usize, mb_h: usize) { |
| 323 | self.w = mb_w * 2; |
| 324 | self.h = mb_h * 2; |
| 325 | self.reset(); |
| 326 | } |
| 327 | fn reset(&mut self) { |
| 328 | let size = self.w * self.h; |
| 329 | self.mv_f.truncate(0); |
| 330 | self.mv_f.resize(size, ZERO_MV); |
| 331 | self.mv_b.truncate(0); |
| 332 | self.mv_b.resize(size, ZERO_MV); |
| 333 | self.has_f.truncate(0); |
| 334 | self.has_f.resize(size >> 2, false); |
| 335 | self.has_b.truncate(0); |
| 336 | self.has_b.resize(size >> 2, false); |
| 337 | } |
| 338 | fn fill(&mut self, mb_x: usize, mb_y: usize, fwd: bool, mv: MV) { |
| 339 | let idx = mb_x * 2 + mb_y * 2 * self.w; |
| 340 | if fwd { |
| 341 | self.mv_f[idx + 0] = mv; |
| 342 | self.mv_f[idx + 1] = mv; |
| 343 | self.mv_f[idx + self.w + 0] = mv; |
| 344 | self.mv_f[idx + self.w + 1] = mv; |
| 345 | } else { |
| 346 | self.mv_b[idx + 0] = mv; |
| 347 | self.mv_b[idx + 1] = mv; |
| 348 | self.mv_b[idx + self.w + 0] = mv; |
| 349 | self.mv_b[idx + self.w + 1] = mv; |
| 350 | } |
| 351 | } |
| 352 | fn get_mv_by_idx(&self, idx: usize, fwd: bool) -> MV { |
| 353 | if fwd { self.mv_f[idx] } else { self.mv_b[idx] } |
| 354 | } |
| 355 | fn pred_mv(&self, idx: usize, fwd: bool, has_top: bool, has_left: bool, has_tr: bool, has_tl: bool, is16: bool) -> MV { |
| 356 | if !has_top && !has_left { return ZERO_MV; } |
| 357 | let left_mv = if has_left { self.get_mv_by_idx(idx - 1, fwd) } else { ZERO_MV }; |
| 358 | let top_mv = if has_top { self.get_mv_by_idx(idx - self.w, fwd) } else { left_mv }; |
| 359 | let tr_add = if is16 { 2 } else { 1 }; |
| 360 | let tr_mv; |
| 361 | if has_tr { |
| 362 | tr_mv = self.get_mv_by_idx(idx - self.w + tr_add, fwd); |
| 363 | } else if has_tl { |
| 364 | tr_mv = self.get_mv_by_idx(idx - self.w - 1, fwd); |
| 365 | } else { |
| 366 | tr_mv = left_mv; |
| 367 | } |
| 368 | MV::pred(left_mv, top_mv, tr_mv) |
| 369 | } |
| 370 | pub fn pred_mb_mv(&self, mb_x: usize, mb_y: usize, fwd: bool, has_top: bool, has_left: bool, has_tr: bool, has_tl: bool) -> MV { |
| 371 | self.pred_mv(mb_x * 2 + mb_y * 2 * self.w, fwd, has_top, has_left, has_tr, has_tl, true) |
| 372 | } |
| 373 | fn set_mb(&mut self, mb_x: usize, mb_y: usize, mbtype: MBType, ref_mvi: &Self, mvs: &[MV], sstate: &SState) { |
| 374 | let mb_idx = mb_x + mb_y * (self.w >> 1); |
| 375 | self.has_f[mb_idx] = mbtype.is_fwd(); |
| 376 | self.has_b[mb_idx] = mbtype.is_bwd(); |
| 377 | if mbtype.is_nomv() { |
| 378 | self.fill(mb_x, mb_y, true, ZERO_MV); |
| 379 | self.fill(mb_x, mb_y, false, ZERO_MV); |
| 380 | return; |
| 381 | } |
| 382 | if mbtype.is_fwd() { |
| 383 | self.fill(mb_x, mb_y, false, ZERO_MV); |
| 384 | } else if mbtype.is_bwd() { |
| 385 | self.fill(mb_x, mb_y, true, ZERO_MV); |
| 386 | } |
| 387 | let idx = mb_x * 2 + mb_y * 2 * self.w; |
| 388 | |
| 389 | match mbtype { |
| 390 | MBType::MBSkip => { |
| 391 | self.fill(mb_x, mb_y, true, ZERO_MV/*pred_mv*/); |
| 392 | }, |
| 393 | MBType::MBP16x16 | |
| 394 | MBType::MBP16x16Mix => { |
| 395 | let pred_mv = self.pred_mv(idx, mbtype.is_fwd(), sstate.has_top, sstate.has_left, sstate.has_tr, sstate.has_tl, true); |
| 396 | let new_mv = mvs[0] + pred_mv; |
| 397 | self.fill(mb_x, mb_y, true, new_mv); |
| 398 | }, |
| 399 | MBType::MBP16x8 => { |
| 400 | let pred_mv = self.pred_mv(idx, mbtype.is_fwd(), sstate.has_top, sstate.has_left, sstate.has_tr, sstate.has_tl, true); |
| 401 | let new_mv = mvs[0] + pred_mv; |
| 402 | self.mv_f[idx + 0] = new_mv; |
| 403 | self.mv_f[idx + 1] = new_mv; |
| 404 | |
| 405 | let idx2 = idx + self.w; |
| 406 | let pred_mv = self.pred_mv(idx2, true, true, sstate.has_left, false, sstate.has_left, true); |
| 407 | let new_mv = mvs[1] + pred_mv; |
| 408 | self.mv_f[idx2 + 0] = new_mv; |
| 409 | self.mv_f[idx2 + 1] = new_mv; |
| 410 | }, |
| 411 | MBType::MBP8x16 => { |
| 412 | let pred_mv = self.pred_mv(idx, true, sstate.has_top, sstate.has_left, sstate.has_top, sstate.has_tl, false); |
| 413 | let new_mv = mvs[0] + pred_mv; |
| 414 | self.mv_f[idx] = new_mv; |
| 415 | self.mv_f[idx + self.w] = new_mv; |
| 416 | |
| 417 | let pred_mv = self.pred_mv(idx + 1, true, sstate.has_top, true, sstate.has_tr, sstate.has_top, false); |
| 418 | let new_mv = mvs[1] + pred_mv; |
| 419 | self.mv_f[idx + 1] = new_mv; |
| 420 | self.mv_f[idx + self.w + 1] = new_mv; |
| 421 | }, |
| 422 | MBType::MBP8x8 => { |
| 423 | let mut idx8 = idx; |
| 424 | let mut has_top = sstate.has_top; |
| 425 | for y in 0..2 { |
| 426 | for x in 0..2 { |
| 427 | let has_left = (x > 0) || sstate.has_left; |
| 428 | let has_tr = if y > 0 { x == 0 } else if x == 0 { sstate.has_top } else { sstate.has_tr }; |
| 429 | let has_tl; |
| 430 | if y == 0 { |
| 431 | has_tl = if x == 0 { sstate.has_tl } else { sstate.has_top }; |
| 432 | } else { |
| 433 | has_tl = if x == 0 { sstate.has_left } else { true }; |
| 434 | } |
| 435 | let pred_mv = self.pred_mv(idx8 + x, true, has_top, has_left, has_tr, has_tl, false); |
| 436 | let new_mv = mvs[x + y * 2] + pred_mv; |
| 437 | self.mv_f[idx8 + x] = new_mv; |
| 438 | } |
| 439 | has_top = true; |
| 440 | idx8 += self.w; |
| 441 | } |
| 442 | }, |
| 443 | MBType::MBDirect => { |
| 444 | let mut cum_mv_f = ZERO_MV; |
| 445 | let mut cum_mv_b = ZERO_MV; |
| 446 | let mut idx8 = idx; |
| 447 | for _ in 0..2 { |
| 448 | for x in 0..2 { |
| 449 | let (mv_f, mv_b) = ref_mvi.mv_f[idx8 + x].scale(sstate.trd, sstate.trb); |
| 450 | cum_mv_f += mv_f; |
| 451 | cum_mv_b += mv_b; |
| 452 | } |
| 453 | idx8 += self.w; |
| 454 | } |
| 455 | cum_mv_f.x >>= 2; |
| 456 | cum_mv_f.y >>= 2; |
| 457 | cum_mv_b.x >>= 2; |
| 458 | cum_mv_b.y >>= 2; |
| 459 | self.fill(mb_x, mb_y, true, cum_mv_f); |
| 460 | self.fill(mb_x, mb_y, false, cum_mv_b); |
| 461 | }, |
| 462 | MBType::MBBidir => { |
| 463 | let pred_mv_f = ZERO_MV; |
| 464 | let new_mv = pred_mv_f + mvs[0]; |
| 465 | self.fill(mb_x, mb_y, true, new_mv); |
| 466 | let pred_mv_b = ZERO_MV; |
| 467 | let new_mv = pred_mv_b + mvs[1]; |
| 468 | self.fill(mb_x, mb_y, false, new_mv); |
| 469 | }, |
| 470 | MBType::MBForward => { |
| 471 | let pred_mv = self.pred_mv(idx, mbtype.is_fwd(), sstate.has_top, sstate.has_left, sstate.has_tr, sstate.has_tl, true); |
| 472 | let new_mv = mvs[0] + pred_mv; |
| 473 | self.fill(mb_x, mb_y, true, new_mv); |
| 474 | }, |
| 475 | MBType::MBBackward => { |
| 476 | let pred_mv = self.pred_mv(idx, mbtype.is_fwd(), sstate.has_top, sstate.has_left, sstate.has_tr, sstate.has_tl, true); |
| 477 | let new_mv = mvs[0] + pred_mv; |
| 478 | self.fill(mb_x, mb_y, false, new_mv); |
| 479 | }, |
| 480 | _ => {}, |
| 481 | } |
| 482 | } |
| 483 | pub fn get_mv(&self, mb_x: usize, mb_y: usize, x: usize, y: usize, fwd: bool) -> MV { |
| 484 | let idx = mb_x * 2 + x + (mb_y * 2 + y) * self.w; |
| 485 | if fwd { self.mv_f[idx] } |
| 486 | else { self.mv_b[idx] } |
| 487 | } |
| 488 | fn mv_gt_3(&self, mb_x: usize, mb_y: usize, x: usize, y: usize, vert: bool) -> bool { |
| 489 | let idx = mb_x * 2 + x + (mb_y * 2 + y) * self.w; |
| 490 | let off = if vert { self.w } else { 1 }; |
| 491 | let diffx = self.mv_f[idx].x - self.mv_f[idx - off].x; |
| 492 | let diffy = self.mv_f[idx].y - self.mv_f[idx - off].y; |
| 493 | (diffx < -3) || (diffx > 3) || (diffy < -3) || (diffy > 3) |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | pub trait RV34BitstreamDecoder { |
| 498 | fn decode_slice_header(&mut self, br: &mut BitReader, old_w: usize, old_h: usize) -> DecoderResult<RV34SliceHeader>; |
| 499 | fn decode_intra_pred(&mut self, br: &mut BitReader, types: &mut [i8], pos: usize, tstride: usize, has_top: bool) -> DecoderResult<()>; |
| 500 | fn quant_dc(&self, is_intra: bool, q: u8) -> u8; |
| 501 | fn decode_inter_mb_hdr(&mut self, br: &mut BitReader, ftype: FrameType, mbtype: MBType) -> DecoderResult<MBInfo>; |
| 502 | fn predict_b_mv(&self, sstate: &SState, mvi: &MVInfo, mbtype: MBType, mvs: &[MV], mbinfo: &[RV34MBInfo]) -> (MV, MV); |
| 503 | } |
| 504 | |
| 505 | pub trait RV34DSP { |
| 506 | fn loop_filter(&self, frame: &mut NAVideoBuffer<u8>, ftype: FrameType, mbinfo: &[RV34MBInfo], mb_w: usize, row: usize); |
| 507 | fn do_luma_mc(&self, frame: &mut NAVideoBuffer<u8>, prev_frame: &NAVideoBuffer<u8>, x: usize, y: usize, mv: MV, use16: bool, avg: bool); |
| 508 | fn do_chroma_mc(&self, frame: &mut NAVideoBuffer<u8>, prev_frame: &NAVideoBuffer<u8>, x: usize, y: usize, comp: usize, mv: MV, use8: bool, avg: bool); |
| 509 | } |
| 510 | |
| 511 | fn parse_slice_offsets(src: &[u8], offsets: &mut Vec<usize>) -> DecoderResult<()> { |
| 512 | let num_slices = (src[0] as usize) + 1; |
| 513 | let ini_off = num_slices * 8 + 1; |
| 514 | offsets.truncate(0); |
| 515 | |
| 516 | if ini_off >= src.len() { return Err(DecoderError::ShortData); } |
| 517 | |
| 518 | let mut br = BitReader::new(&src[1..ini_off], BitReaderMode::BE); |
| 519 | |
| 520 | for i in 0..num_slices { |
| 521 | br.skip(32)?; |
| 522 | let off = br.read(32)? as usize; |
| 523 | if (i == 0) && (off != 0) { |
| 524 | return Err(DecoderError::InvalidData); |
| 525 | } |
| 526 | if (i > 0) && (off <= offsets[i - 1]) { |
| 527 | return Err(DecoderError::InvalidData); |
| 528 | } |
| 529 | offsets.push(off); |
| 530 | } |
| 531 | |
| 532 | Ok(()) |
| 533 | } |
| 534 | |
| 535 | fn decode_slice_header(br: &mut BitReader, bd: &mut RV34BitstreamDecoder, slice_no: usize, slice_offs: &[usize], old_width: usize, old_height: usize) -> DecoderResult<RV34SliceHeader> { |
| 536 | validate!(slice_no < slice_offs.len()); |
| 537 | br.seek((slice_offs[slice_no] * 8) as u32)?; |
| 538 | let mut shdr = bd.decode_slice_header(br, old_width, old_height)?; |
| 539 | if slice_no < slice_offs.len() - 1 { |
| 540 | let cur_pos = br.tell() as u32; |
| 541 | br.seek((slice_offs[slice_no + 1] * 8) as u32)?; |
| 542 | if let Ok(nhdr) = bd.decode_slice_header(br, shdr.width, shdr.height) { |
| 543 | validate!(nhdr.start > shdr.start); |
| 544 | shdr.end = nhdr.start; |
| 545 | } else { |
| 546 | if slice_no + 2 < slice_offs.len() { |
| 547 | br.seek((slice_offs[slice_no + 2] * 8) as u32)?; |
| 548 | if let Ok(nhdr) = bd.decode_slice_header(br, shdr.width, shdr.height) { |
| 549 | validate!(nhdr.start > shdr.start); |
| 550 | shdr.end = nhdr.start; |
| 551 | } else { |
| 552 | shdr.end = ((shdr.width + 15) >> 4) * ((shdr.height + 15) >> 4); |
| 553 | } |
| 554 | } else { |
| 555 | shdr.end = ((shdr.width + 15) >> 4) * ((shdr.height + 15) >> 4); |
| 556 | } |
| 557 | } |
| 558 | br.seek(cur_pos)?; |
| 559 | } else { |
| 560 | shdr.end = ((shdr.width + 15) >> 4) * ((shdr.height + 15) >> 4); |
| 561 | } |
| 562 | Ok(shdr) |
| 563 | } |
| 564 | |
| 565 | const RV34_MB_MAX_SIZES: [usize; 6] = [ 0x2F, 0x62, 0x18B, 0x62F, 0x18BF, 0x23FF ]; |
| 566 | const RV34_SLICE_START_BITS: [u8; 6] = [ 6, 7, 9, 11, 13, 14 ]; |
| 567 | |
| 568 | pub fn get_slice_start_offset_bits(w: usize, h: usize) -> u8 { |
| 569 | let mb_size = ((w + 15) >> 4) * ((h + 15) >> 4) - 1; |
| 570 | let mut idx: usize = 0; |
| 571 | while (idx < 5) && (RV34_MB_MAX_SIZES[idx] < mb_size) { idx += 1; } |
| 572 | RV34_SLICE_START_BITS[idx] |
| 573 | } |
| 574 | |
| 575 | const RV34_DQUANT_TAB: [[i8; 2]; 32] = [ |
| 576 | [ 0, 0 ], [ 2, 1 ], [ -1, 1 ], [ -1, 1 ], [ -1, 1 ], [ -1, 1 ], [ -1, 1 ], [ -1, 1 ], |
| 577 | [ -1, 1 ], [ -1, 1 ], [ -1, 1 ], [ -2, 2 ], [ -2, 2 ], [ -2, 2 ], [ -2, 2 ], [ -2, 2 ], |
| 578 | [ -2, 2 ], [ -2, 2 ], [ -2, 2 ], [ -2, 2 ], [ -2, 2 ], [ -3, 3 ], [ -3, 3 ], [ -3, 3 ], |
| 579 | [ -3, 3 ], [ -3, 3 ], [ -3, 3 ], [ -3, 3 ], [ -3, 3 ], [ -3, 2 ], [ -3, 1 ], [ -3,-5 ] |
| 580 | ]; |
| 581 | |
| 582 | const RV34_QUANT_TAB: [u16; 32] = [ |
| 583 | 60, 67, 76, 85, 96, 108, 121, 136, |
| 584 | 152, 171, 192, 216, 242, 272, 305, 341, |
| 585 | 383, 432, 481, 544, 606, 683, 767, 854, |
| 586 | 963, 1074, 1212, 1392, 1566, 1708, 1978, 2211 |
| 587 | ]; |
| 588 | |
| 589 | const RV34_CHROMA_QUANT_DC: [u8; 32] = [ |
| 590 | 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, |
| 591 | 14, 15, 15, 16, 17, 18, 18, 19, 20, 20, 21, 21, 22, 22, 23, 23 |
| 592 | ]; |
| 593 | const RV34_CHROMA_QUANT_AC: [u8; 32] = [ |
| 594 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 595 | 16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23, 23, 24, 24, 25, 25 |
| 596 | ]; |
| 597 | |
| 598 | fn decode_dquant(br: &mut BitReader, q: u8) -> DecoderResult<u8> { |
| 599 | if br.read_bool()? { |
| 600 | let diff = RV34_DQUANT_TAB[q as usize][br.read(1)? as usize]; |
| 601 | let qp = (q as i8) + diff; |
| 602 | validate!((qp > 0) && (qp < 32)); |
| 603 | Ok(qp as u8) |
| 604 | } else { |
| 605 | let qp = br.read(5)? as u8; |
| 606 | Ok(qp) |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | pub struct SState { |
| 611 | pub mb_x: usize, |
| 612 | pub mb_y: usize, |
| 613 | pub mb_w: usize, |
| 614 | pub mb_h: usize, |
| 615 | pub cbp: u32, |
| 616 | pub q: u8, |
| 617 | pub q_dc: u8, |
| 618 | pub set_idx: usize, |
| 619 | pub has_left: bool, |
| 620 | pub has_top: bool, |
| 621 | pub has_tl: bool, |
| 622 | pub has_tr: bool, |
| 623 | pub trd: u16, |
| 624 | pub trb: u16, |
| 625 | } |
| 626 | |
| 627 | impl SState { |
| 628 | fn new() -> Self { |
| 629 | Self { |
| 630 | mb_x: 0, |
| 631 | mb_y: 0, |
| 632 | mb_w: 0, |
| 633 | mb_h: 0, |
| 634 | cbp: 0, |
| 635 | q: 0, |
| 636 | q_dc: 0, |
| 637 | set_idx: 0, |
| 638 | has_left: false, |
| 639 | has_top: false, |
| 640 | has_tl: false, |
| 641 | has_tr: false, |
| 642 | trd: 0, |
| 643 | trb: 0, |
| 644 | } |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | struct MBHist { |
| 649 | is_p: bool, |
| 650 | hist: [MBType; 4], |
| 651 | count: usize, |
| 652 | } |
| 653 | |
| 654 | impl MBHist { |
| 655 | fn new(ftype: FrameType) -> Self { Self { is_p: ftype == FrameType::P, hist: [MBType::Invalid; 4], count: 0 } } |
| 656 | fn add(&mut self, mbt: MBType) { |
| 657 | let mbt2 = match mbt { |
| 658 | MBType::MBSkip if self.is_p => MBType::MBP16x16, |
| 659 | MBType::MBSkip if !self.is_p => MBType::MBDirect, |
| 660 | _ => mbt, |
| 661 | }; |
| 662 | self.hist[self.count] = mbt2; |
| 663 | self.count += 1; |
| 664 | } |
| 665 | fn get_mbtype(&self) -> MBType { |
| 666 | if self.count == 0 { |
| 667 | MBType::MBIntra |
| 668 | } else if self.count == 1 { |
| 669 | self.hist[0] |
| 670 | } else if self.count == 2 { |
| 671 | if self.hist[0].get_weight() <= self.hist[1].get_weight() { |
| 672 | self.hist[0] |
| 673 | } else { |
| 674 | self.hist[1] |
| 675 | } |
| 676 | } else { |
| 677 | let mut w: [usize; 12] = [0; 12]; |
| 678 | for i in 0..self.count { w[self.hist[i].get_weight()] += 1; } |
| 679 | let mut nz_idx = 0; |
| 680 | for i in 0..12 { |
| 681 | if w[i] == self.count { return MBTYPE_FROM_WEIGHT[i]; } |
| 682 | if (w[i] > w[nz_idx]) || (w[nz_idx] == 0) { nz_idx = i; } |
| 683 | } |
| 684 | |
| 685 | MBTYPE_FROM_WEIGHT[nz_idx] |
| 686 | } |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | fn decode_mv(br: &mut BitReader) -> DecoderResult<MV> { |
| 691 | let x = br.read_code_signed(IntCodeType::Gamma)? as i16; |
| 692 | let y = br.read_code_signed(IntCodeType::Gamma)? as i16; |
| 693 | Ok(MV{ x, y }) |
| 694 | } |
| 695 | |
| 696 | fn do_mc_16x16(dsp: &Box<dyn RV34DSP + Send>, buf: &mut NAVideoBuffer<u8>, prevbuf: &NAVideoBuffer<u8>, mb_x: usize, mb_y: usize, mv: MV, avg: bool) { |
| 697 | dsp.do_luma_mc (buf, prevbuf, mb_x * 16, mb_y * 16, mv, true, avg); |
| 698 | dsp.do_chroma_mc(buf, prevbuf, mb_x * 8, mb_y * 8, 1, mv, true, avg); |
| 699 | dsp.do_chroma_mc(buf, prevbuf, mb_x * 8, mb_y * 8, 2, mv, true, avg); |
| 700 | } |
| 701 | |
| 702 | fn do_mc_8x8(dsp: &Box<dyn RV34DSP + Send>, buf: &mut NAVideoBuffer<u8>, prevbuf: &NAVideoBuffer<u8>, mb_x: usize, xoff: usize, mb_y: usize, yoff: usize, mv: MV, avg: bool) { |
| 703 | dsp.do_luma_mc (buf, prevbuf, mb_x * 16 + xoff * 8, mb_y * 16 + yoff * 8, mv, false, avg); |
| 704 | dsp.do_chroma_mc(buf, prevbuf, mb_x * 8 + xoff * 4, mb_y * 8 + yoff * 4, 1, mv, false, avg); |
| 705 | dsp.do_chroma_mc(buf, prevbuf, mb_x * 8 + xoff * 4, mb_y * 8 + yoff * 4, 2, mv, false, avg); |
| 706 | } |
| 707 | |
| 708 | fn do_avg(cdsp: &RV34CommonDSP, buf: &mut NAVideoBuffer<u8>, avg_buf: &NAVideoBuffer<u8>, mb_x: usize, xb: usize, mb_y: usize, yb: usize, size: usize, ratio1: u32, ratio2: u32) { |
| 709 | for comp in 0..3 { |
| 710 | let xoff = if comp == 0 { mb_x * 16 + xb * 8 } else { mb_x * 8 + xb * 4 }; |
| 711 | let yoff = if comp == 0 { mb_y * 16 + yb * 8 } else { mb_y * 8 + yb * 4 }; |
| 712 | let csize = if comp == 0 { size } else { size >> 1 }; |
| 713 | let dstride = buf.get_stride(comp); |
| 714 | let doffset = buf.get_offset(comp) + xoff + yoff * dstride; |
| 715 | let data = buf.get_data_mut().unwrap(); |
| 716 | let dst: &mut [u8] = data.as_mut_slice(); |
| 717 | |
| 718 | let sstride = avg_buf.get_stride(comp); |
| 719 | let soffset = avg_buf.get_offset(comp); |
| 720 | let data = avg_buf.get_data(); |
| 721 | let src: &[u8] = data.as_slice(); |
| 722 | |
| 723 | if ratio1 == ratio2 { |
| 724 | cdsp.avg(dst, doffset, dstride, src, soffset, sstride, csize); |
| 725 | } else { |
| 726 | cdsp.weight(dst, doffset, dstride, src, soffset, sstride, ratio2, ratio1, csize); |
| 727 | } |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | pub struct RV34Decoder { |
| 732 | is_rv30: bool, |
| 733 | coderead: RV34Codes, |
| 734 | dsp: Box<dyn RV34DSP + Send>, |
| 735 | cdsp: RV34CommonDSP, |
| 736 | width: usize, |
| 737 | height: usize, |
| 738 | ipbs: IPBShuffler, |
| 739 | mvi: MVInfo, |
| 740 | ref_mvi: MVInfo, |
| 741 | last_ts: u16, |
| 742 | next_ts: u16, |
| 743 | ratio1: u32, |
| 744 | ratio2: u32, |
| 745 | is_b: bool, |
| 746 | mbinfo: Vec<RV34MBInfo>, |
| 747 | avg_buf: NAVideoBufferRef<u8>, |
| 748 | base_ts: u64, |
| 749 | } |
| 750 | |
| 751 | impl RV34Decoder { |
| 752 | pub fn new(is_rv30: bool, dsp: Box<dyn RV34DSP + Send>) -> Self { |
| 753 | let tmp_vinfo = NAVideoInfo::new(16, 16, false, YUV420_FORMAT); |
| 754 | let vt = alloc_video_buffer(tmp_vinfo, 4).unwrap(); |
| 755 | let vb = vt.get_vbuf(); |
| 756 | let avg_buf = vb.unwrap(); |
| 757 | RV34Decoder { |
| 758 | is_rv30, |
| 759 | coderead: RV34Codes::new(), |
| 760 | dsp, |
| 761 | cdsp: RV34CommonDSP::new(), |
| 762 | ipbs: IPBShuffler::new(), |
| 763 | mvi: MVInfo::new(), |
| 764 | ref_mvi: MVInfo::new(), |
| 765 | mbinfo: Vec::new(), |
| 766 | width: 0, height: 0, |
| 767 | last_ts: 0, next_ts: 0, |
| 768 | ratio1: 0, ratio2: 0, |
| 769 | is_b: false, |
| 770 | avg_buf, |
| 771 | base_ts: 0, |
| 772 | } |
| 773 | } |
| 774 | fn decode_mb_header_intra(&mut self, bd: &mut RV34BitstreamDecoder, br: &mut BitReader, is_i16: bool, im: &mut IntraModeState, q: u8, has_top: bool, has_dq: bool) -> DecoderResult<MBInfo> { |
| 775 | if is_i16 { |
| 776 | let imode = br.read(2)? as i8; |
| 777 | im.fill_block(imode); |
| 778 | Ok(MBInfo { mbtype: MBType::MBIntra16, skip_run: 0, dquant: false }) |
| 779 | } else { |
| 780 | let dq = if !has_dq { |
| 781 | if !self.is_rv30 { !br.read_bool()? } else { false } |
| 782 | } else { false }; |
| 783 | if dq { |
| 784 | decode_dquant(br, q)?; |
| 785 | } |
| 786 | bd.decode_intra_pred(br, im.cache.data.as_mut_slice(), im.cache.xpos, im.cache.stride, has_top)?; |
| 787 | Ok(MBInfo { mbtype: MBType::MBIntra, skip_run: 0, dquant: dq }) |
| 788 | } |
| 789 | } |
| 790 | fn decode_mb_header_inter(&mut self, bd: &mut RV34BitstreamDecoder, br: &mut BitReader, ftype: FrameType, mbtype: MBType, im: &mut IntraModeState, q: u8, has_top: bool) -> DecoderResult<MBInfo> { |
| 791 | let hdr = bd.decode_inter_mb_hdr(br, ftype, mbtype)?; |
| 792 | validate!(hdr.mbtype != MBType::Invalid); |
| 793 | if hdr.dquant { |
| 794 | decode_dquant(br, q)?; |
| 795 | } |
| 796 | if hdr.mbtype.is_intra() { |
| 797 | return self.decode_mb_header_intra(bd, br, hdr.mbtype.is_16(), im, q, has_top, true); |
| 798 | } |
| 799 | Ok(hdr) |
| 800 | } |
| 801 | |
| 802 | fn decode_mb_intra(&mut self, sstate: &SState, imode: &IntraModeState, buf: &mut NAVideoBuffer<u8>, br: &mut BitReader, is_16: bool) -> DecoderResult<()> { |
| 803 | let mut cur_cbp = sstate.cbp; |
| 804 | { |
| 805 | let q_dc = RV34_QUANT_TAB[sstate.q_dc as usize]; |
| 806 | let q_ac = RV34_QUANT_TAB[sstate.q as usize]; |
| 807 | let luma_set = if is_16 { 2 } else { 1 }; |
| 808 | let mut coeffs16: [i16; 16] = [0; 16]; |
| 809 | if is_16 { |
| 810 | let has_ac = self.coderead.decode_block(br, &mut coeffs16, 3, 0, q_dc, q_dc, q_ac)?; |
| 811 | if has_ac { |
| 812 | self.cdsp.transform16(&mut coeffs16); |
| 813 | } else { |
| 814 | self.cdsp.transform16_dc(&mut coeffs16); |
| 815 | } |
| 816 | } |
| 817 | let stride = buf.get_stride(0); |
| 818 | let mut offset = buf.get_offset(0) + sstate.mb_x * 16 + sstate.mb_y * 16 * stride; |
| 819 | let data = buf.get_data_mut().unwrap(); |
| 820 | let framebuf: &mut [u8] = data.as_mut_slice(); |
| 821 | |
| 822 | if is_16 { |
| 823 | let im16 = imode.get_pred16_type(sstate.has_top, sstate.has_left); |
| 824 | self.cdsp.ipred16x16[im16 as usize](framebuf, offset, stride); |
| 825 | } |
| 826 | |
| 827 | for y in 0..4 { |
| 828 | for x in 0..4 { |
| 829 | let mut coeffs: [i16; 16] = [0; 16]; |
| 830 | let has_ac; |
| 831 | if (cur_cbp & 1) != 0 { |
| 832 | has_ac = self.coderead.decode_block(br, &mut coeffs, luma_set, 0, q_ac, q_ac, q_ac)?; |
| 833 | } else { |
| 834 | has_ac = false; |
| 835 | } |
| 836 | if is_16 { |
| 837 | coeffs[0] = coeffs16[x + y * 4]; |
| 838 | } else { |
| 839 | let noright = (sstate.mb_x == sstate.mb_w - 1) && (x == 3); |
| 840 | let has_top = sstate.has_top || (y > 0); |
| 841 | let im = imode.get_pred4_type(x, y, sstate.has_top, sstate.has_left); |
| 842 | let topright: [u8; 4] = if (noright && sstate.has_top && y == 0) || (x == 3 && y > 0) { |
| 843 | let i = offset + x * 4 - stride; |
| 844 | [framebuf[i + 3], framebuf[i + 3], framebuf[i + 3], framebuf[i + 3]] |
| 845 | } else if has_top { |
| 846 | let i = offset + x * 4 - stride; |
| 847 | [framebuf[i + 4], framebuf[i + 5], framebuf[i + 6], framebuf[i + 7]] |
| 848 | } else { |
| 849 | [0; 4] |
| 850 | }; |
| 851 | self.cdsp.ipred4x4[im as usize](framebuf, offset + x*4, stride, &topright); |
| 852 | } |
| 853 | if has_ac { |
| 854 | self.cdsp.transform(&mut coeffs); |
| 855 | } else { |
| 856 | self.cdsp.transform_dc(&mut coeffs); |
| 857 | } |
| 858 | self.cdsp.add_coeffs(framebuf, offset + x * 4, stride, &coeffs); |
| 859 | cur_cbp >>= 1; |
| 860 | } |
| 861 | offset += stride * 4; |
| 862 | } |
| 863 | } |
| 864 | let q_dc = RV34_QUANT_TAB[RV34_CHROMA_QUANT_DC[sstate.q as usize] as usize]; |
| 865 | let q_ac = RV34_QUANT_TAB[RV34_CHROMA_QUANT_AC[sstate.q as usize] as usize]; |
| 866 | let chroma_set = 0; |
| 867 | for comp in 1..3 { |
| 868 | let stride = buf.get_stride(comp); |
| 869 | let mut offset = buf.get_offset(comp) + sstate.mb_x * 8 + sstate.mb_y * 8 * stride; |
| 870 | let data = buf.get_data_mut().unwrap(); |
| 871 | let framebuf: &mut [u8] = data.as_mut_slice(); |
| 872 | if is_16 { |
| 873 | let im8 = imode.get_pred8_type(sstate.has_top, sstate.has_left); |
| 874 | self.cdsp.ipred8x8[im8 as usize](framebuf, offset, stride); |
| 875 | } |
| 876 | for y in 0..2 { |
| 877 | for x in 0..2 { |
| 878 | let mut coeffs: [i16; 16] = [0; 16]; |
| 879 | let has_ac; |
| 880 | if (cur_cbp & 1) != 0 { |
| 881 | has_ac = self.coderead.decode_block(br, &mut coeffs, chroma_set, 1, q_dc, q_ac, q_ac)?; |
| 882 | } else { |
| 883 | has_ac = false; |
| 884 | } |
| 885 | if !is_16 { |
| 886 | let noright = (sstate.mb_x == sstate.mb_w - 1) && (x == 1); |
| 887 | let has_top = sstate.has_top || (y > 0); |
| 888 | let im = imode.get_pred4_type_chroma(x, y, sstate.has_top, sstate.has_left); |
| 889 | let topright: [u8; 4] = if (noright && sstate.has_top && y == 0) || (x == 1 && y > 0) { |
| 890 | let i = offset + x * 4 - stride; |
| 891 | [framebuf[i + 3], framebuf[i + 3], framebuf[i + 3], framebuf[i + 3]] |
| 892 | } else if has_top { |
| 893 | let i = offset + x * 4 - stride; |
| 894 | [framebuf[i + 4], framebuf[i + 5], framebuf[i + 6], framebuf[i + 7]] |
| 895 | } else { |
| 896 | [0; 4] |
| 897 | }; |
| 898 | self.cdsp.ipred4x4[im as usize](framebuf, offset + x*4, stride, &topright); |
| 899 | } |
| 900 | if has_ac { |
| 901 | self.cdsp.transform(&mut coeffs); |
| 902 | } else { |
| 903 | self.cdsp.transform_dc(&mut coeffs); |
| 904 | } |
| 905 | self.cdsp.add_coeffs(framebuf, offset + x * 4, stride, &coeffs); |
| 906 | cur_cbp >>= 1; |
| 907 | } |
| 908 | offset += stride * 4; |
| 909 | } |
| 910 | } |
| 911 | Ok(()) |
| 912 | } |
| 913 | |
| 914 | fn do_mc(&mut self, buf: &mut NAVideoBuffer<u8>, mbh: &MBInfo, sstate: &SState) { |
| 915 | let mb_x = sstate.mb_x; |
| 916 | let mb_y = sstate.mb_y; |
| 917 | match mbh.mbtype { |
| 918 | MBType::MBP16x16 | MBType::MBP16x16Mix => { |
| 919 | if let Some(ref prevbuf) = self.ipbs.get_lastref() { |
| 920 | let mv = self.mvi.get_mv(mb_x, mb_y, 0, 0, true); |
| 921 | do_mc_16x16(&self.dsp, buf, prevbuf, mb_x, mb_y, mv, false); |
| 922 | } |
| 923 | }, |
| 924 | MBType::MBForward => { |
| 925 | if let Some(ref fwdbuf) = self.ipbs.get_b_fwdref() { |
| 926 | let mv = self.mvi.get_mv(mb_x, mb_y, 0, 0, true); |
| 927 | do_mc_16x16(&self.dsp, buf, fwdbuf, mb_x, mb_y, mv, false); |
| 928 | } |
| 929 | }, |
| 930 | MBType::MBBackward => { |
| 931 | if let Some(ref bwdbuf) = self.ipbs.get_b_bwdref() { |
| 932 | let mv = self.mvi.get_mv(mb_x, mb_y, 0, 0, false); |
| 933 | do_mc_16x16(&self.dsp, buf, bwdbuf, mb_x, mb_y, mv, false); |
| 934 | } |
| 935 | }, |
| 936 | MBType::MBP8x8 | MBType::MBP8x16 | MBType::MBP16x8 => { |
| 937 | if let Some(ref prevbuf) = self.ipbs.get_lastref() { |
| 938 | for y in 0..2 { |
| 939 | for x in 0..2 { |
| 940 | let mv = self.mvi.get_mv(mb_x, mb_y, x, y, true); |
| 941 | do_mc_8x8(&self.dsp, buf, prevbuf, mb_x, x, mb_y, y, mv, false); |
| 942 | } |
| 943 | } |
| 944 | } |
| 945 | }, |
| 946 | MBType::MBSkip if !self.is_b => { |
| 947 | if let Some(ref prevbuf) = self.ipbs.get_lastref() { |
| 948 | do_mc_16x16(&self.dsp, buf, prevbuf, mb_x, mb_y, ZERO_MV, false); |
| 949 | } |
| 950 | }, |
| 951 | MBType::MBSkip | MBType::MBDirect => { |
| 952 | if let (Some(ref fwdbuf), Some(ref bwdbuf)) = (self.ipbs.get_b_fwdref(), self.ipbs.get_b_bwdref()) { |
| 953 | for y in 0..2 { |
| 954 | for x in 0..2 { |
| 955 | let (mv_f, mv_b) = self.ref_mvi.get_mv(mb_x, mb_y, x, y, true).scale(sstate.trd, sstate.trb); |
| 956 | do_mc_8x8(&self.dsp, buf, fwdbuf, mb_x, x, mb_y, y, mv_f, false); |
| 957 | do_mc_8x8(&self.dsp, &mut self.avg_buf, bwdbuf, mb_x, x, mb_y, y, mv_b, true); |
| 958 | do_avg(&self.cdsp, buf, &self.avg_buf, mb_x, x, mb_y, y, 8, self.ratio1, self.ratio2); |
| 959 | } |
| 960 | } |
| 961 | } |
| 962 | }, |
| 963 | MBType::MBBidir => { |
| 964 | if let (Some(ref fwdbuf), Some(ref bwdbuf)) = (self.ipbs.get_b_fwdref(), self.ipbs.get_b_bwdref()) { |
| 965 | let mv_f = self.mvi.get_mv(mb_x, mb_y, 0, 0, true); |
| 966 | let mv_b = self.mvi.get_mv(mb_x, mb_y, 0, 0, false); |
| 967 | do_mc_16x16(&self.dsp, buf, fwdbuf, mb_x, mb_y, mv_f, false); |
| 968 | do_mc_16x16(&self.dsp, &mut self.avg_buf, bwdbuf, mb_x, mb_y, mv_b, true); |
| 969 | do_avg(&self.cdsp, buf, &self.avg_buf, mb_x, 0, mb_y, 0, 16, self.ratio1, self.ratio2); |
| 970 | } |
| 971 | }, |
| 972 | _ => {}, |
| 973 | }; |
| 974 | } |
| 975 | fn decode_mb_inter(&mut self, sstate: &SState, mbh: &MBInfo, buf: &mut NAVideoBuffer<u8>, br: &mut BitReader, is_16: bool) -> DecoderResult<()> { |
| 976 | self.do_mc(buf, mbh, sstate); |
| 977 | |
| 978 | let mut cur_cbp = sstate.cbp; |
| 979 | |
| 980 | { |
| 981 | let q_dc = RV34_QUANT_TAB[sstate.q_dc as usize]; |
| 982 | let q_ac = RV34_QUANT_TAB[sstate.q as usize]; |
| 983 | let luma_set = if is_16 { 2 } else { 0 }; |
| 984 | let mut coeffs16: [i16; 16] = [0; 16]; |
| 985 | if is_16 { |
| 986 | let has_ac = self.coderead.decode_block(br, &mut coeffs16, 3, 0, q_dc, q_dc, q_ac)?; |
| 987 | if has_ac { |
| 988 | self.cdsp.transform16(&mut coeffs16); |
| 989 | } else { |
| 990 | self.cdsp.transform16_dc(&mut coeffs16); |
| 991 | } |
| 992 | } |
| 993 | let stride = buf.get_stride(0); |
| 994 | let mut offset = buf.get_offset(0) + sstate.mb_x * 16 + sstate.mb_y * 16 * stride; |
| 995 | let data = buf.get_data_mut().unwrap(); |
| 996 | let framebuf: &mut [u8] = data.as_mut_slice(); |
| 997 | |
| 998 | for y in 0..4 { |
| 999 | for x in 0..4 { |
| 1000 | let mut coeffs: [i16; 16] = [0; 16]; |
| 1001 | let has_ac; |
| 1002 | if (cur_cbp & 1) != 0 { |
| 1003 | has_ac = self.coderead.decode_block(br, &mut coeffs, luma_set, 0, q_ac, q_ac, q_ac)?; |
| 1004 | } else { |
| 1005 | has_ac = false; |
| 1006 | } |
| 1007 | if is_16 { |
| 1008 | coeffs[0] = coeffs16[x + y * 4]; |
| 1009 | } |
| 1010 | if has_ac { |
| 1011 | self.cdsp.transform(&mut coeffs); |
| 1012 | } else { |
| 1013 | self.cdsp.transform_dc(&mut coeffs); |
| 1014 | } |
| 1015 | self.cdsp.add_coeffs(framebuf, offset + x * 4, stride, &coeffs); |
| 1016 | cur_cbp >>= 1; |
| 1017 | } |
| 1018 | offset += stride * 4; |
| 1019 | } |
| 1020 | } |
| 1021 | if is_16 { |
| 1022 | self.coderead.select_codes(false, sstate.q, sstate.set_idx, false); |
| 1023 | } |
| 1024 | let q_dc = RV34_QUANT_TAB[RV34_CHROMA_QUANT_DC[sstate.q as usize] as usize]; |
| 1025 | let q_ac = RV34_QUANT_TAB[RV34_CHROMA_QUANT_AC[sstate.q as usize] as usize]; |
| 1026 | let chroma_set = 1; |
| 1027 | for comp in 1..3 { |
| 1028 | let stride = buf.get_stride(comp); |
| 1029 | let mut offset = buf.get_offset(comp) + sstate.mb_x * 8 + sstate.mb_y * 8 * stride; |
| 1030 | let data = buf.get_data_mut().unwrap(); |
| 1031 | let framebuf: &mut [u8] = data.as_mut_slice(); |
| 1032 | for _ in 0..2 { |
| 1033 | for x in 0..2 { |
| 1034 | let mut coeffs: [i16; 16] = [0; 16]; |
| 1035 | let has_ac; |
| 1036 | if (cur_cbp & 1) != 0 { |
| 1037 | has_ac = self.coderead.decode_block(br, &mut coeffs, chroma_set, 1, q_dc, q_ac, q_ac)?; |
| 1038 | } else { |
| 1039 | has_ac = false; |
| 1040 | } |
| 1041 | if has_ac { |
| 1042 | self.cdsp.transform(&mut coeffs); |
| 1043 | } else { |
| 1044 | self.cdsp.transform_dc(&mut coeffs); |
| 1045 | } |
| 1046 | self.cdsp.add_coeffs(framebuf, offset + x * 4, stride, &coeffs); |
| 1047 | cur_cbp >>= 1; |
| 1048 | } |
| 1049 | offset += stride * 4; |
| 1050 | } |
| 1051 | } |
| 1052 | Ok(()) |
| 1053 | } |
| 1054 | fn fill_deblock_flags(&self, sstate: &SState, mb_pos: usize, mbinfo: &mut Vec<RV34MBInfo>) { |
| 1055 | let mbt = mbinfo[mb_pos].mbtype; |
| 1056 | let mut hmvmask = 0; |
| 1057 | let mut vmvmask = 0; |
| 1058 | |
| 1059 | for y in 0..2 { |
| 1060 | for x in 0..2 { |
| 1061 | let shift = x * 2 + y * 8; |
| 1062 | if ((x > 0) || (sstate.mb_x > 0)) && self.mvi.mv_gt_3(sstate.mb_x, sstate.mb_y, x, y, false) { |
| 1063 | vmvmask |= 0x11 << shift; |
| 1064 | } |
| 1065 | if ((y > 0) || sstate.has_top) && self.mvi.mv_gt_3(sstate.mb_x, sstate.mb_y, x, y, true) { |
| 1066 | hmvmask |= 0x03 << shift; |
| 1067 | } |
| 1068 | } |
| 1069 | } |
| 1070 | if !sstate.has_top { hmvmask &= !0x000F; } |
| 1071 | if sstate.mb_x == 0 { vmvmask &= !0x1111; } |
| 1072 | if self.is_rv30 { |
| 1073 | vmvmask |= (vmvmask & 0x4444) >> 1; |
| 1074 | hmvmask |= (hmvmask & 0x0F00) >> 4; |
| 1075 | if sstate.mb_x > 0 { |
| 1076 | mbinfo[mb_pos - 1].deblock |= (vmvmask & 0x1111) << 3; |
| 1077 | } |
| 1078 | if sstate.has_top { |
| 1079 | |
| 1080 | mbinfo[mb_pos - sstate.mb_w].deblock |= (hmvmask & 0xF) << 12; |
| 1081 | } |
| 1082 | } |
| 1083 | if mbt.is_intra_or_16() { |
| 1084 | mbinfo[mb_pos].deblock = 0xFFFF; |
| 1085 | mbinfo[mb_pos].cbp_c = 0xFF; |
| 1086 | } else { |
| 1087 | mbinfo[mb_pos].deblock = (mbinfo[mb_pos].cbp as u16) | hmvmask | vmvmask; |
| 1088 | mbinfo[mb_pos].cbp_c = (mbinfo[mb_pos].cbp >> 16) as u8; |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | pub fn parse_frame(&mut self, supp: &mut NADecoderSupport, src: &[u8], bd: &mut RV34BitstreamDecoder) -> DecoderResult<(NABufferType, FrameType, u64)> { |
| 1093 | let mut slice_offs: Vec<usize> = Vec::new(); |
| 1094 | parse_slice_offsets(src, &mut slice_offs)?; |
| 1095 | let ini_off = slice_offs.len() * 8 + 1; |
| 1096 | |
| 1097 | let mut br = BitReader::new(&src[ini_off..], BitReaderMode::BE); |
| 1098 | let hdr0 = decode_slice_header(&mut br, bd, 0, slice_offs.as_slice(), self.width, self.height)?; |
| 1099 | validate!((hdr0.width != 0) && (hdr0.height != 0)); |
| 1100 | self.width = hdr0.width; |
| 1101 | self.height = hdr0.height; |
| 1102 | let mb_w = (hdr0.width + 15) >> 4; |
| 1103 | let mb_h = (hdr0.height + 15) >> 4; |
| 1104 | let mut mb_pos: usize = 0; |
| 1105 | let mut slice = hdr0; |
| 1106 | let mut slice_no: usize = 1; |
| 1107 | let is_intra = hdr0.ftype == FrameType::I; |
| 1108 | let mut skip_run: usize = 0; |
| 1109 | let mut imode = IntraModeState::new(mb_w); |
| 1110 | let mut q = hdr0.quant; |
| 1111 | |
| 1112 | let mut sstate = SState::new(); |
| 1113 | let mut mbinfo: Vec<RV34MBInfo> = Vec::with_capacity(mb_w * mb_h); |
| 1114 | |
| 1115 | self.is_b = hdr0.ftype == FrameType::B; |
| 1116 | if hdr0.ftype != FrameType::B { |
| 1117 | self.last_ts = self.next_ts; |
| 1118 | self.next_ts = hdr0.pts; |
| 1119 | if self.last_ts > self.next_ts { |
| 1120 | self.base_ts += 1 << 13; |
| 1121 | } |
| 1122 | } |
| 1123 | match hdr0.ftype { |
| 1124 | FrameType::P => { |
| 1125 | if self.ipbs.get_lastref().is_none() { |
| 1126 | return Err(DecoderError::MissingReference); |
| 1127 | } |
| 1128 | }, |
| 1129 | FrameType::B => { |
| 1130 | if self.ipbs.get_lastref().is_none() { |
| 1131 | return Err(DecoderError::MissingReference); |
| 1132 | } |
| 1133 | if self.ipbs.get_nextref().is_none() { |
| 1134 | return Err(DecoderError::MissingReference); |
| 1135 | } |
| 1136 | }, |
| 1137 | _ => {}, |
| 1138 | }; |
| 1139 | let ts_diff = (self.next_ts << 3).wrapping_sub(hdr0.pts << 3) >> 3; |
| 1140 | let ts = self.base_ts + (self.next_ts as u64) - (ts_diff as u64); |
| 1141 | sstate.trd = (self.next_ts << 3).wrapping_sub(self.last_ts << 3) >> 3; |
| 1142 | sstate.trb = (hdr0.pts << 3).wrapping_sub(self.last_ts << 3) >> 3; |
| 1143 | if sstate.trb != 0 { |
| 1144 | self.ratio1 = ((sstate.trb as u32) << 14) / (sstate.trd as u32); |
| 1145 | self.ratio2 = (((sstate.trd as u32) - (sstate.trb as u32)) << 14) / (sstate.trd as u32); |
| 1146 | } else { |
| 1147 | self.ratio1 = 1 << 14 >> 1; |
| 1148 | self.ratio2 = 1 << 14 >> 1; |
| 1149 | } |
| 1150 | //todo validate against ref frame |
| 1151 | |
| 1152 | let vinfo = NAVideoInfo::new(hdr0.width, hdr0.height, false, YUV420_FORMAT); |
| 1153 | let ret = supp.pool_u8.get_free(); |
| 1154 | if ret.is_none() { |
| 1155 | return Err(DecoderError::AllocError); |
| 1156 | } |
| 1157 | let mut buf = ret.unwrap(); |
| 1158 | if buf.get_info() != vinfo { |
| 1159 | self.ipbs.clear(); |
| 1160 | supp.pool_u8.reset(); |
| 1161 | supp.pool_u8.prealloc_video(vinfo, 4)?; |
| 1162 | let ret = supp.pool_u8.get_free(); |
| 1163 | if ret.is_none() { |
| 1164 | return Err(DecoderError::AllocError); |
| 1165 | } |
| 1166 | buf = ret.unwrap(); |
| 1167 | } |
| 1168 | |
| 1169 | sstate.q = q; |
| 1170 | sstate.has_top = false; |
| 1171 | sstate.mb_w = mb_w; |
| 1172 | sstate.mb_h = mb_h; |
| 1173 | sstate.set_idx = hdr0.set_idx; |
| 1174 | |
| 1175 | self.mvi.resize(mb_w, mb_h); |
| 1176 | for mb_y in 0..mb_h { |
| 1177 | sstate.mb_y = mb_y; |
| 1178 | sstate.has_left = false; |
| 1179 | for mb_x in 0..mb_w { |
| 1180 | sstate.mb_x = mb_x; |
| 1181 | if mb_pos == slice.end { |
| 1182 | slice = decode_slice_header(&mut br, bd, slice_no, &slice_offs, self.width, self.height)?; |
| 1183 | validate!(slice.fits(&hdr0)); |
| 1184 | q = slice.quant; |
| 1185 | slice_no += 1; |
| 1186 | imode.reset(); |
| 1187 | sstate.q = q; |
| 1188 | sstate.has_top = false; |
| 1189 | sstate.has_left = false; |
| 1190 | sstate.set_idx = slice.set_idx; |
| 1191 | } |
| 1192 | sstate.has_top = (mb_pos - slice.start) >= mb_w; |
| 1193 | sstate.has_tl = sstate.has_top && (mb_x > 0) && (mb_pos > slice.start + mb_w); |
| 1194 | sstate.has_tr = (mb_x < mb_w - 1) && (mb_pos - slice.start >= mb_w - 1); |
| 1195 | imode.set_mb_x(mb_x); |
| 1196 | let mbh = if is_intra { |
| 1197 | let is_i16 = br.read_bool()?; |
| 1198 | self.decode_mb_header_intra(bd, &mut br, is_i16, &mut imode, q, sstate.has_top, false)? |
| 1199 | } else { |
| 1200 | if skip_run == 0 { |
| 1201 | let mbtype; |
| 1202 | if self.is_rv30 { |
| 1203 | mbtype = MBType::Invalid; |
| 1204 | } else { |
| 1205 | let mut hist = MBHist::new(hdr0.ftype); |
| 1206 | if sstate.has_top { |
| 1207 | hist.add(mbinfo[mb_pos - mb_w].mbtype); |
| 1208 | if sstate.has_tr { hist.add(mbinfo[mb_pos - mb_w + 1].mbtype); } |
| 1209 | } |
| 1210 | if sstate.has_left { hist.add(mbinfo[mb_pos - 1].mbtype); } |
| 1211 | if sstate.has_tl { hist.add(mbinfo[mb_pos - mb_w - 1].mbtype); } |
| 1212 | mbtype = hist.get_mbtype(); |
| 1213 | } |
| 1214 | self.decode_mb_header_inter(bd, &mut br, hdr0.ftype, mbtype, &mut imode, q, sstate.has_top)? |
| 1215 | } else { |
| 1216 | skip_run -= 1; |
| 1217 | MBInfo { mbtype: MBType::MBSkip, skip_run: 0, dquant: false } |
| 1218 | } |
| 1219 | }; |
| 1220 | if !mbh.mbtype.is_intra() { |
| 1221 | let mut mvs: [MV; 4] = [ZERO_MV; 4]; |
| 1222 | for i in 0..mbh.mbtype.get_num_mvs() { |
| 1223 | mvs[i] = decode_mv(&mut br)?; |
| 1224 | } |
| 1225 | if !self.is_b { |
| 1226 | self.mvi.set_mb(mb_x, mb_y, mbh.mbtype, &self.ref_mvi, &mvs, &sstate); |
| 1227 | } else { |
| 1228 | let (mv_f, mv_b) = bd.predict_b_mv(&sstate, &self.mvi, mbh.mbtype, &mvs, mbinfo.as_slice()); |
| 1229 | self.mvi.fill(mb_x, mb_y, true, mv_f); |
| 1230 | self.mvi.fill(mb_x, mb_y, false, mv_b); |
| 1231 | } |
| 1232 | } |
| 1233 | let cbp; |
| 1234 | let is_16 = (mbh.mbtype == MBType::MBIntra16) || (mbh.mbtype == MBType::MBP16x16Mix); |
| 1235 | if mbh.mbtype == MBType::MBSkip { |
| 1236 | cbp = 0; |
| 1237 | if mbh.skip_run > 0 { |
| 1238 | skip_run = mbh.skip_run; |
| 1239 | } |
| 1240 | } else { |
| 1241 | self.coderead.select_codes(mbh.mbtype.is_intra(), q, slice.set_idx, is_16); |
| 1242 | if mbh.mbtype == MBType::MBP16x16Mix { |
| 1243 | self.coderead.select_codes(true, q, slice.set_idx, true); |
| 1244 | } |
| 1245 | cbp = self.coderead.decode_cbp(&mut br)?; |
| 1246 | } |
| 1247 | sstate.cbp = cbp; |
| 1248 | if is_intra || mbh.mbtype.is_intra() { |
| 1249 | sstate.q_dc = bd.quant_dc(true, q); |
| 1250 | self.decode_mb_intra(&sstate, &imode, &mut buf, &mut br, is_16)?; |
| 1251 | } else { |
| 1252 | imode.fill_block(0); |
| 1253 | self.decode_mb_inter(&sstate, &mbh, &mut buf, &mut br, is_16)?; |
| 1254 | } |
| 1255 | |
| 1256 | let mi = RV34MBInfo { cbp, q, mbtype: mbh.mbtype, deblock: 0, cbp_c: 0 }; |
| 1257 | mbinfo.push(mi); |
| 1258 | if is_intra { |
| 1259 | mbinfo[mb_pos].deblock = 0xFFFF; |
| 1260 | mbinfo[mb_pos].cbp_c = 0xFF; |
| 1261 | } else { |
| 1262 | self.fill_deblock_flags(&sstate, mb_pos, &mut mbinfo); |
| 1263 | } |
| 1264 | sstate.has_left = true; |
| 1265 | mb_pos += 1; |
| 1266 | } |
| 1267 | if hdr0.deblock && (mb_y >= 1) { |
| 1268 | self.dsp.loop_filter(&mut buf, hdr0.ftype, &mbinfo, mb_w, mb_y - 1); |
| 1269 | } |
| 1270 | imode.update(); |
| 1271 | } |
| 1272 | if hdr0.deblock { |
| 1273 | self.dsp.loop_filter(&mut buf, hdr0.ftype, &mbinfo, mb_w, mb_h - 1); |
| 1274 | } |
| 1275 | if !self.is_b { |
| 1276 | self.ipbs.add_frame(buf.clone()); |
| 1277 | mem::swap(&mut self.mvi, &mut self.ref_mvi); |
| 1278 | mem::swap(&mut self.mbinfo, &mut mbinfo); |
| 1279 | } |
| 1280 | |
| 1281 | Ok((NABufferType::Video(buf), hdr0.ftype, ts)) |
| 1282 | } |
| 1283 | pub fn flush(&mut self) { |
| 1284 | self.ipbs.clear(); |
| 1285 | } |
| 1286 | } |