| 1 | use std::mem; |
| 2 | use std::ops::{Add, Sub}; |
| 3 | use super::*; |
| 4 | use super::blockdsp; |
| 5 | use super::h263code::*; |
| 6 | use formats; |
| 7 | |
| 8 | #[derive(Debug,Clone,Copy,PartialEq)] |
| 9 | pub enum Type { |
| 10 | I, P, Skip, Special |
| 11 | } |
| 12 | |
| 13 | #[allow(dead_code)] |
| 14 | #[derive(Debug,Clone,Copy)] |
| 15 | pub struct PBInfo { |
| 16 | trb: u8, |
| 17 | dbquant: u8, |
| 18 | } |
| 19 | |
| 20 | impl PBInfo { |
| 21 | pub fn new(trb: u8, dbquant: u8) -> Self { |
| 22 | PBInfo{ trb: trb, dbquant: dbquant } |
| 23 | } |
| 24 | pub fn get_trb(&self) -> u8 { self.trb } |
| 25 | pub fn get_dbquant(&self) -> u8 { self.dbquant } |
| 26 | } |
| 27 | |
| 28 | #[allow(dead_code)] |
| 29 | #[derive(Debug,Clone,Copy)] |
| 30 | pub struct PicInfo { |
| 31 | w: usize, |
| 32 | h: usize, |
| 33 | mode: Type, |
| 34 | quant: u8, |
| 35 | apm: bool, |
| 36 | umv: bool, |
| 37 | pb: Option<PBInfo>, |
| 38 | ts: u8, |
| 39 | } |
| 40 | |
| 41 | #[allow(dead_code)] |
| 42 | impl PicInfo { |
| 43 | pub fn new(w: usize, h: usize, mode: Type, quant: u8, apm: bool, umv: bool, ts: u8, pb: Option<PBInfo>) -> Self { |
| 44 | PicInfo{ w: w, h: h, mode: mode, quant: quant, apm: apm, umv: umv, ts: ts, pb: pb } |
| 45 | } |
| 46 | pub fn get_width(&self) -> usize { self.w } |
| 47 | pub fn get_height(&self) -> usize { self.h } |
| 48 | pub fn get_mode(&self) -> Type { self.mode } |
| 49 | pub fn get_quant(&self) -> u8 { self.quant } |
| 50 | pub fn get_apm(&self) -> bool { self.apm } |
| 51 | pub fn get_umv(&self) -> bool { self.umv } |
| 52 | pub fn is_pb(&self) -> bool { self.pb.is_some() } |
| 53 | pub fn get_ts(&self) -> u8 { self.ts } |
| 54 | pub fn get_pbinfo(&self) -> PBInfo { self.pb.unwrap() } |
| 55 | } |
| 56 | |
| 57 | #[derive(Debug,Clone,Copy)] |
| 58 | pub struct Slice { |
| 59 | mb_x: usize, |
| 60 | mb_y: usize, |
| 61 | quant: u8, |
| 62 | } |
| 63 | |
| 64 | impl Slice { |
| 65 | pub fn new(mb_x: usize, mb_y: usize, quant: u8) -> Self { |
| 66 | Slice{ mb_x: mb_x, mb_y: mb_y, quant: quant } |
| 67 | } |
| 68 | pub fn get_default_slice(pinfo: &PicInfo) -> Self { |
| 69 | Slice{ mb_x: 0, mb_y: 0, quant: pinfo.get_quant() } |
| 70 | } |
| 71 | pub fn get_quant(&self) -> u8 { self.quant } |
| 72 | } |
| 73 | |
| 74 | #[derive(Debug,Clone,Copy)] |
| 75 | pub struct MV { |
| 76 | x: i16, |
| 77 | y: i16, |
| 78 | } |
| 79 | |
| 80 | impl MV { |
| 81 | pub fn new(x: i16, y: i16) -> Self { MV{ x: x, y: y } } |
| 82 | pub fn pred(a: MV, b: MV, c: MV) -> Self { |
| 83 | let x; |
| 84 | if a.x < b.x { |
| 85 | if b.x < c.x { |
| 86 | x = b.x; |
| 87 | } else { |
| 88 | if a.x < c.x { x = c.x; } else { x = a.x; } |
| 89 | } |
| 90 | } else { |
| 91 | if b.x < c.x { |
| 92 | if a.x < c.x { x = a.x; } else { x = c.x; } |
| 93 | } else { |
| 94 | x = b.x; |
| 95 | } |
| 96 | } |
| 97 | let y; |
| 98 | if a.y < b.y { |
| 99 | if b.y < c.y { |
| 100 | y = b.y; |
| 101 | } else { |
| 102 | if a.y < c.y { y = c.y; } else { y = a.y; } |
| 103 | } |
| 104 | } else { |
| 105 | if b.y < c.y { |
| 106 | if a.y < c.y { y = a.y; } else { y = c.y; } |
| 107 | } else { |
| 108 | y = b.y; |
| 109 | } |
| 110 | } |
| 111 | MV { x: x, y: y } |
| 112 | } |
| 113 | fn add_umv(pred_mv: MV, add: MV, umv: bool) -> Self { |
| 114 | let mut new_mv = pred_mv + add; |
| 115 | if umv { |
| 116 | if pred_mv.x > 32 && new_mv.x > 63 { new_mv.x -= 64; } |
| 117 | if pred_mv.x < -31 && new_mv.x < -63 { new_mv.x += 64; } |
| 118 | if pred_mv.y > 32 && new_mv.y > 63 { new_mv.y -= 64; } |
| 119 | if pred_mv.y < -31 && new_mv.y < -63 { new_mv.y += 64; } |
| 120 | } else { |
| 121 | if new_mv.x > 31 { new_mv.x -= 64; } |
| 122 | else if new_mv.x < -32 { new_mv.x += 64; } |
| 123 | if new_mv.y > 31 { new_mv.y -= 64; } |
| 124 | else if new_mv.y < -32 { new_mv.y += 64; } |
| 125 | } |
| 126 | new_mv |
| 127 | } |
| 128 | fn scale(&self, trb: u8, trd: u8) -> Self { |
| 129 | if (trd == 0) || (trb == 0) { |
| 130 | ZERO_MV |
| 131 | } else { |
| 132 | MV { x: (self.x * (trb as i16)) / (trd as i16), y: (self.y * (trb as i16)) / (trd as i16) } |
| 133 | } |
| 134 | } |
| 135 | fn b_sub(pvec: MV, fwdvec: MV, bvec: MV, trb: u8, trd: u8) -> Self { |
| 136 | let bscale = (trb as i16) - (trd as i16); |
| 137 | let x = if bvec.x != 0 { fwdvec.x - pvec.x } else if trd != 0 { bscale * pvec.x / (trd as i16) } else { 0 }; |
| 138 | let y = if bvec.y != 0 { fwdvec.y - pvec.y } else if trd != 0 { bscale * pvec.y / (trd as i16) } else { 0 }; |
| 139 | MV { x: x, y: y } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | pub const ZERO_MV: MV = MV { x: 0, y: 0 }; |
| 144 | |
| 145 | impl Add for MV { |
| 146 | type Output = MV; |
| 147 | fn add(self, other: MV) -> MV { MV { x: self.x + other.x, y: self.y + other.y } } |
| 148 | } |
| 149 | |
| 150 | impl Sub for MV { |
| 151 | type Output = MV; |
| 152 | fn sub(self, other: MV) -> MV { MV { x: self.x - other.x, y: self.y - other.y } } |
| 153 | } |
| 154 | |
| 155 | #[derive(Debug,Clone,Copy)] |
| 156 | pub struct BlockInfo { |
| 157 | intra: bool, |
| 158 | skip: bool, |
| 159 | mode: Type, |
| 160 | cbp: u8, |
| 161 | q: u8, |
| 162 | mv: [MV; 4], |
| 163 | num_mv: usize, |
| 164 | bpart: bool, |
| 165 | b_cbp: u8, |
| 166 | mv2: [MV; 2], |
| 167 | num_mv2: usize, |
| 168 | fwd: bool, |
| 169 | } |
| 170 | |
| 171 | #[allow(dead_code)] |
| 172 | #[derive(Debug,Clone,Copy)] |
| 173 | pub struct BBlockInfo { |
| 174 | present: bool, |
| 175 | cbp: u8, |
| 176 | num_mv: usize, |
| 177 | fwd: bool, |
| 178 | } |
| 179 | |
| 180 | #[allow(dead_code)] |
| 181 | impl BlockInfo { |
| 182 | pub fn new(mode: Type, cbp: u8, q: u8) -> Self { |
| 183 | BlockInfo { |
| 184 | intra: mode == Type::I, |
| 185 | skip: (cbp == 0) && (mode != Type::I), |
| 186 | mode: mode, |
| 187 | cbp: cbp, |
| 188 | q: q, |
| 189 | mv: [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)], |
| 190 | num_mv: 0, |
| 191 | bpart: false, |
| 192 | b_cbp: 0, |
| 193 | mv2: [ZERO_MV, ZERO_MV], |
| 194 | num_mv2: 0, |
| 195 | fwd: false, |
| 196 | } |
| 197 | } |
| 198 | pub fn is_intra(&self) -> bool { self.intra } |
| 199 | pub fn is_skipped(&self) -> bool { self.skip } |
| 200 | pub fn get_mode(&self) -> Type { self.mode } |
| 201 | pub fn get_cbp(&self) -> u8 { self.cbp } |
| 202 | pub fn get_q(&self) -> u8 { self.q } |
| 203 | pub fn get_num_mvs(&self) -> usize { self.num_mv } |
| 204 | pub fn get_mv(&self, idx: usize) -> MV { self.mv[idx] } |
| 205 | pub fn has_b_part(&self) -> bool { self.bpart } |
| 206 | pub fn get_cbp_b(&self) -> u8 { self.b_cbp } |
| 207 | pub fn get_num_mvs2(&self) -> usize { self.num_mv2 } |
| 208 | pub fn get_mv2(&self, idx: usize) -> MV { self.mv2[idx] } |
| 209 | pub fn set_mv(&mut self, mvs: &[MV]) { |
| 210 | if mvs.len() > 0 { self.skip = false; } |
| 211 | let mut mv_arr: [MV; 4] = [MV::new(0, 0), MV::new(0, 0), MV::new(0, 0), MV::new(0, 0)]; |
| 212 | for i in 0..mvs.len() { mv_arr[i] = mvs[i]; } |
| 213 | self.mv = mv_arr; |
| 214 | self.num_mv = mvs.len(); |
| 215 | } |
| 216 | pub fn set_bpart(&mut self, bbinfo: BBlockInfo) { |
| 217 | self.bpart = bbinfo.present; |
| 218 | self.b_cbp = bbinfo.cbp; |
| 219 | self.fwd = bbinfo.fwd; |
| 220 | self.num_mv2 = bbinfo.get_num_mv(); |
| 221 | } |
| 222 | pub fn set_b_mv(&mut self, mvs: &[MV]) { |
| 223 | if mvs.len() > 0 { self.skip = false; } |
| 224 | let mut mv_arr: [MV; 2] = [ZERO_MV, ZERO_MV]; |
| 225 | for i in 0..mvs.len() { mv_arr[i] = mvs[i]; } |
| 226 | self.mv2 = mv_arr; |
| 227 | } |
| 228 | pub fn is_b_fwd(&self) -> bool { self.fwd } |
| 229 | } |
| 230 | |
| 231 | impl BBlockInfo { |
| 232 | pub fn new(present: bool, cbp: u8, num_mv: usize, fwd: bool) -> Self { |
| 233 | BBlockInfo { |
| 234 | present: present, |
| 235 | cbp: cbp, |
| 236 | num_mv: num_mv, |
| 237 | fwd: fwd, |
| 238 | } |
| 239 | } |
| 240 | pub fn get_num_mv(&self) -> usize { self.num_mv } |
| 241 | } |
| 242 | |
| 243 | pub trait BlockDecoder { |
| 244 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo>; |
| 245 | fn decode_slice_header(&mut self, pinfo: &PicInfo) -> DecoderResult<Slice>; |
| 246 | fn decode_block_header(&mut self, pinfo: &PicInfo, sinfo: &Slice) -> DecoderResult<BlockInfo>; |
| 247 | fn decode_block_intra(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>; |
| 248 | fn decode_block_inter(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()>; |
| 249 | fn calc_mv(&mut self, vec: MV); |
| 250 | fn is_slice_end(&mut self) -> bool; |
| 251 | } |
| 252 | |
| 253 | #[allow(dead_code)] |
| 254 | struct MVInfo { |
| 255 | mv: Vec<MV>, |
| 256 | mb_w: usize, |
| 257 | mb_stride: usize, |
| 258 | mb_start: usize, |
| 259 | top: bool, |
| 260 | umv: bool, |
| 261 | } |
| 262 | |
| 263 | impl MVInfo { |
| 264 | fn new() -> Self { MVInfo{ mv: Vec::new(), mb_w: 0, mb_stride: 0, mb_start: 0, top: true, umv: false } } |
| 265 | fn reset(&mut self, mb_w: usize, mb_start: usize, umv: bool) { |
| 266 | self.mb_start = mb_start; |
| 267 | self.mb_w = mb_w; |
| 268 | self.mb_stride = mb_w * 2; |
| 269 | self.top = true; |
| 270 | self.mv.resize(self.mb_stride * 3, ZERO_MV); |
| 271 | self.umv = umv; |
| 272 | } |
| 273 | fn update_row(&mut self) { |
| 274 | self.mb_start = self.mb_w + 1; |
| 275 | self.top = false; |
| 276 | for i in 0..self.mb_stride { |
| 277 | self.mv[i] = self.mv[self.mb_stride * 2 + i]; |
| 278 | } |
| 279 | } |
| 280 | #[allow(non_snake_case)] |
| 281 | fn predict(&mut self, mb_x: usize, blk_no: usize, use4: bool, diff: MV) -> MV { |
| 282 | let A; |
| 283 | let B; |
| 284 | let C; |
| 285 | let last = mb_x == self.mb_w - 1; |
| 286 | //println!(" pred from {}.{} blk {}.{}/{} top {}", diff.x, diff.y, mb_x, blk_no,self.mb_start,self.top); |
| 287 | match blk_no { |
| 288 | 0 => { |
| 289 | if mb_x != self.mb_start { |
| 290 | A = if mb_x != 0 { self.mv[self.mb_stride + mb_x * 2 - 1] } else { ZERO_MV }; |
| 291 | B = if !self.top { self.mv[ mb_x * 2] } else { A }; |
| 292 | C = if !self.top && !last { self.mv[mb_x * 2 + 2] } else { ZERO_MV }; |
| 293 | } else { |
| 294 | A = ZERO_MV; B = ZERO_MV; C = ZERO_MV; |
| 295 | } |
| 296 | }, |
| 297 | 1 => { |
| 298 | A = self.mv[self.mb_stride + mb_x * 2]; |
| 299 | B = if !self.top { self.mv[mb_x * 2 + 1] } else { A }; |
| 300 | C = if !self.top && !last { self.mv[mb_x * 2 + 2] } else { A }; |
| 301 | }, |
| 302 | 2 => { |
| 303 | A = if mb_x != self.mb_start { self.mv[self.mb_stride * 2 + mb_x * 2 - 1] } else { ZERO_MV }; |
| 304 | B = self.mv[self.mb_stride + mb_x * 2]; |
| 305 | C = self.mv[self.mb_stride + mb_x * 2 + 1]; |
| 306 | }, |
| 307 | 3 => { |
| 308 | A = self.mv[self.mb_stride * 2 + mb_x * 2]; |
| 309 | B = self.mv[self.mb_stride * 1 + mb_x * 2 + 1]; |
| 310 | C = self.mv[self.mb_stride * 1 + mb_x * 2]; |
| 311 | }, |
| 312 | _ => { return ZERO_MV; } |
| 313 | } |
| 314 | //println!(" A = {}.{} B = {}.{} C = {}.{}", A.x,A.y,B.x,B.y,C.x,C.y); |
| 315 | let pred_mv = MV::pred(A, B, C); |
| 316 | let new_mv = MV::add_umv(pred_mv, diff, self.umv); |
| 317 | if !use4 { |
| 318 | self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = new_mv; |
| 319 | self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = new_mv; |
| 320 | self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = new_mv; |
| 321 | self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = new_mv; |
| 322 | } else { |
| 323 | match blk_no { |
| 324 | 0 => { self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = new_mv; }, |
| 325 | 1 => { self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = new_mv; }, |
| 326 | 2 => { self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = new_mv; }, |
| 327 | 3 => { self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = new_mv; }, |
| 328 | _ => {}, |
| 329 | }; |
| 330 | } |
| 331 | |
| 332 | new_mv |
| 333 | } |
| 334 | fn set_zero_mv(&mut self, mb_x: usize) { |
| 335 | self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = ZERO_MV; |
| 336 | self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = ZERO_MV; |
| 337 | self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = ZERO_MV; |
| 338 | self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = ZERO_MV; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | fn copy_blocks(dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV) { |
| 343 | let srcx = ((mv.x >> 1) as isize) + (xpos as isize); |
| 344 | let srcy = ((mv.y >> 1) as isize) + (ypos as isize); |
| 345 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; |
| 346 | |
| 347 | blockdsp::copy_blocks(dst, src, xpos, ypos, srcx, srcy, w, h, 0, 1, mode, H263_INTERP_FUNCS); |
| 348 | } |
| 349 | |
| 350 | fn avg_blocks(dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV) { |
| 351 | let srcx = ((mv.x >> 1) as isize) + (xpos as isize); |
| 352 | let srcy = ((mv.y >> 1) as isize) + (ypos as isize); |
| 353 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; |
| 354 | |
| 355 | blockdsp::copy_blocks(dst, src, xpos, ypos, srcx, srcy, w, h, 0, 1, mode, H263_INTERP_AVG_FUNCS); |
| 356 | } |
| 357 | |
| 358 | #[allow(dead_code)] |
| 359 | #[derive(Clone,Copy)] |
| 360 | struct BMB { |
| 361 | num_mv: usize, |
| 362 | mv_f: [MV; 4], |
| 363 | mv_b: [MV; 4], |
| 364 | fwd: bool, |
| 365 | blk: [[i16; 64]; 6], |
| 366 | cbp: u8, |
| 367 | } |
| 368 | |
| 369 | impl BMB { |
| 370 | fn new() -> Self { BMB {blk: [[0; 64]; 6], cbp: 0, fwd: false, mv_f: [ZERO_MV; 4], mv_b: [ZERO_MV; 4], num_mv: 0} } |
| 371 | } |
| 372 | |
| 373 | pub struct DCT8x8VideoDecoder { |
| 374 | w: usize, |
| 375 | h: usize, |
| 376 | mb_w: usize, |
| 377 | mb_h: usize, |
| 378 | num_mb: usize, |
| 379 | ftype: Type, |
| 380 | prev_frm: Option<NAVideoBuffer<u8>>, |
| 381 | cur_frm: Option<NAVideoBuffer<u8>>, |
| 382 | last_ts: u8, |
| 383 | has_b: bool, |
| 384 | b_data: Vec<BMB>, |
| 385 | } |
| 386 | |
| 387 | #[allow(dead_code)] |
| 388 | impl DCT8x8VideoDecoder { |
| 389 | pub fn new() -> Self { |
| 390 | DCT8x8VideoDecoder{ |
| 391 | w: 0, h: 0, mb_w: 0, mb_h: 0, num_mb: 0, |
| 392 | ftype: Type::Special, |
| 393 | prev_frm: None, cur_frm: None, |
| 394 | last_ts: 0, |
| 395 | has_b: false, b_data: Vec::new(), |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | pub fn is_intra(&self) -> bool { self.ftype == Type::I } |
| 400 | pub fn get_dimensions(&self) -> (usize, usize) { (self.w, self.h) } |
| 401 | |
| 402 | pub fn parse_frame(&mut self, bd: &mut BlockDecoder) -> DecoderResult<NABufferType> { |
| 403 | let pinfo = bd.decode_pichdr()?; |
| 404 | let mut mvi = MVInfo::new(); |
| 405 | |
| 406 | //todo handle res change |
| 407 | self.w = pinfo.w; |
| 408 | self.h = pinfo.h; |
| 409 | self.mb_w = (pinfo.w + 15) >> 4; |
| 410 | self.mb_h = (pinfo.h + 15) >> 4; |
| 411 | self.num_mb = self.mb_w * self.mb_h; |
| 412 | self.ftype = pinfo.mode; |
| 413 | self.has_b = pinfo.is_pb(); |
| 414 | |
| 415 | if self.has_b { |
| 416 | self.b_data.truncate(0); |
| 417 | } |
| 418 | |
| 419 | mem::swap(&mut self.cur_frm, &mut self.prev_frm); |
| 420 | // if self.ftype == Type::I && !pinfo.is_pb() { self.prev_frm = None; } |
| 421 | |
| 422 | let tsdiff = pinfo.ts.wrapping_sub(self.last_ts); |
| 423 | let bsdiff = if pinfo.is_pb() { pinfo.get_pbinfo().get_trb() } else { 0 }; |
| 424 | |
| 425 | let fmt = formats::YUV420_FORMAT; |
| 426 | let vinfo = NAVideoInfo::new(self.w, self.h, false, fmt); |
| 427 | let bufret = alloc_video_buffer(vinfo, 4); |
| 428 | if let Err(_) = bufret { return Err(DecoderError::InvalidData); } |
| 429 | let mut bufinfo = bufret.unwrap(); |
| 430 | let mut buf = bufinfo.get_vbuf().unwrap(); |
| 431 | |
| 432 | let mut slice = Slice::get_default_slice(&pinfo); |
| 433 | mvi.reset(self.mb_w, 0, pinfo.get_umv()); |
| 434 | |
| 435 | let mut blk: [[i16; 64]; 6] = [[0; 64]; 6]; |
| 436 | for mb_y in 0..self.mb_h { |
| 437 | for mb_x in 0..self.mb_w { |
| 438 | for i in 0..6 { for j in 0..64 { blk[i][j] = 0; } } |
| 439 | |
| 440 | if ((mb_x != 0) || (mb_y != 0)) && bd.is_slice_end() { |
| 441 | //println!("new slice @{}.{}!",mb_x,mb_y); |
| 442 | slice = bd.decode_slice_header(&pinfo)?; |
| 443 | mvi.reset(self.mb_w, mb_x, pinfo.get_umv()); |
| 444 | } |
| 445 | |
| 446 | let binfo = bd.decode_block_header(&pinfo, &slice)?; |
| 447 | let cbp = binfo.get_cbp(); |
| 448 | //println!("mb {}.{} CBP {:X} type {:?}, {} mvs skip {}", mb_x,mb_y, cbp, binfo.get_mode(), binfo.get_num_mvs(),binfo.is_skipped()); |
| 449 | if binfo.is_intra() { |
| 450 | for i in 0..6 { |
| 451 | bd.decode_block_intra(&binfo, binfo.get_q(), i, (cbp & (1 << (5 - i))) != 0, &mut blk[i])?; |
| 452 | h263_idct(&mut blk[i]); |
| 453 | } |
| 454 | blockdsp::put_blocks(&mut buf, mb_x, mb_y, &blk); |
| 455 | mvi.set_zero_mv(mb_x); |
| 456 | } else if !binfo.is_skipped() { |
| 457 | if binfo.get_num_mvs() == 1 { |
| 458 | let mv = mvi.predict(mb_x, 0, false, binfo.get_mv(0)); |
| 459 | //println!(" 1MV {}.{}", mv.x, mv.y); |
| 460 | if let Some(ref srcbuf) = self.prev_frm { |
| 461 | copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, mv); |
| 462 | } |
| 463 | } else { |
| 464 | for blk_no in 0..4 { |
| 465 | let mv = mvi.predict(mb_x, blk_no, true, binfo.get_mv(blk_no)); |
| 466 | //print!(" MV {}.{}", mv.x, mv.y); |
| 467 | if let Some(ref srcbuf) = self.prev_frm { |
| 468 | copy_blocks(&mut buf, srcbuf, |
| 469 | mb_x * 16 + (blk_no & 1) * 8, |
| 470 | mb_y * 16 + (blk_no & 2) * 4, 8, 8, mv); |
| 471 | } |
| 472 | } |
| 473 | //println!(""); |
| 474 | } |
| 475 | for i in 0..6 { |
| 476 | bd.decode_block_inter(&binfo, binfo.get_q(), i, ((cbp >> (5 - i)) & 1) != 0, &mut blk[i])?; |
| 477 | h263_idct(&mut blk[i]); |
| 478 | } |
| 479 | blockdsp::add_blocks(&mut buf, mb_x, mb_y, &blk); |
| 480 | } else { |
| 481 | mvi.set_zero_mv(mb_x); |
| 482 | if let Some(ref srcbuf) = self.prev_frm { |
| 483 | copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, ZERO_MV); |
| 484 | } |
| 485 | } |
| 486 | if pinfo.is_pb() { |
| 487 | let mut b_mb = BMB::new(); |
| 488 | let cbp = binfo.get_cbp_b(); |
| 489 | let bq = (((pinfo.get_pbinfo().get_dbquant() + 5) as u16) * (binfo.get_q() as u16)) >> 2; |
| 490 | let bquant; |
| 491 | if bq < 1 { bquant = 1; } |
| 492 | else if bq > 31 { bquant = 31; } |
| 493 | else { bquant = bq as u8; } |
| 494 | |
| 495 | b_mb.cbp = cbp; |
| 496 | for i in 0..6 { |
| 497 | bd.decode_block_inter(&binfo, bquant, i, (cbp & (1 << (5 - i))) != 0, &mut b_mb.blk[i])?; |
| 498 | h263_idct(&mut b_mb.blk[i]); |
| 499 | } |
| 500 | |
| 501 | let is_fwd = binfo.is_b_fwd(); |
| 502 | b_mb.fwd = is_fwd; |
| 503 | b_mb.num_mv = binfo.get_num_mvs(); |
| 504 | if binfo.get_num_mvs() == 0 { |
| 505 | b_mb.num_mv = 1; |
| 506 | b_mb.mv_f[0] = binfo.get_mv2(1); |
| 507 | b_mb.mv_b[0] = binfo.get_mv2(0); |
| 508 | } if binfo.get_num_mvs() == 1 { |
| 509 | let src_mv = if is_fwd { ZERO_MV } else { binfo.get_mv(0).scale(bsdiff, tsdiff) }; |
| 510 | let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_umv()); |
| 511 | let mv_b = MV::b_sub(binfo.get_mv(0), mv_f, binfo.get_mv2(0), bsdiff, tsdiff); |
| 512 | b_mb.mv_f[0] = mv_f; |
| 513 | b_mb.mv_b[0] = mv_b; |
| 514 | } else { |
| 515 | for blk_no in 0..4 { |
| 516 | let src_mv = if is_fwd { ZERO_MV } else { binfo.get_mv(blk_no).scale(bsdiff, tsdiff) }; |
| 517 | let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_umv()); |
| 518 | let mv_b = MV::b_sub(binfo.get_mv(blk_no), mv_f, binfo.get_mv2(0), bsdiff, tsdiff); |
| 519 | b_mb.mv_f[blk_no] = mv_f; |
| 520 | b_mb.mv_b[blk_no] = mv_b; |
| 521 | } |
| 522 | } |
| 523 | self.b_data.push(b_mb); |
| 524 | } |
| 525 | } |
| 526 | mvi.update_row(); |
| 527 | } |
| 528 | self.cur_frm = Some(buf); |
| 529 | self.last_ts = pinfo.ts; |
| 530 | //println!("unpacked all"); |
| 531 | Ok(bufinfo) |
| 532 | } |
| 533 | |
| 534 | pub fn get_bframe(&mut self) -> DecoderResult<NABufferType> { |
| 535 | if !self.has_b || !self.cur_frm.is_some() || !self.prev_frm.is_some() { |
| 536 | return Err(DecoderError::MissingReference); |
| 537 | } |
| 538 | self.has_b = false; |
| 539 | |
| 540 | let fmt = formats::YUV420_FORMAT; |
| 541 | let vinfo = NAVideoInfo::new(self.w, self.h, false, fmt); |
| 542 | let bufret = alloc_video_buffer(vinfo, 4); |
| 543 | if let Err(_) = bufret { return Err(DecoderError::InvalidData); } |
| 544 | let mut bufinfo = bufret.unwrap(); |
| 545 | let mut b_buf = bufinfo.get_vbuf().unwrap(); |
| 546 | |
| 547 | if let Some(ref bck_buf) = self.prev_frm { |
| 548 | if let Some(ref fwd_buf) = self.cur_frm { |
| 549 | recon_b_frame(&mut b_buf, bck_buf, fwd_buf, self.mb_w, self.mb_h, &self.b_data); |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | self.b_data.truncate(0); |
| 554 | Ok(bufinfo) |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | fn recon_b_frame(b_buf: &mut NAVideoBuffer<u8>, bck_buf: &NAVideoBuffer<u8>, fwd_buf: &NAVideoBuffer<u8>, |
| 559 | mb_w: usize, mb_h: usize, b_data: &Vec<BMB>) { |
| 560 | let mut cur_mb = 0; |
| 561 | for mb_y in 0..mb_h { |
| 562 | for mb_x in 0..mb_w { |
| 563 | let num_mv = b_data[cur_mb].num_mv; |
| 564 | let is_fwd = b_data[cur_mb].fwd; |
| 565 | if num_mv == 0 { |
| 566 | copy_blocks(b_buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, ZERO_MV); |
| 567 | if !is_fwd { |
| 568 | avg_blocks(b_buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, ZERO_MV); |
| 569 | } |
| 570 | } else if num_mv == 1 { |
| 571 | copy_blocks(b_buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_f[0]); |
| 572 | if !is_fwd { |
| 573 | avg_blocks(b_buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_b[0]); |
| 574 | } |
| 575 | } else { |
| 576 | for blk_no in 0..4 { |
| 577 | let xpos = mb_x * 16 + (blk_no & 1) * 8; |
| 578 | let ypos = mb_y * 16 + (blk_no & 2) * 4; |
| 579 | copy_blocks(b_buf, bck_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_f[blk_no]); |
| 580 | if !is_fwd { |
| 581 | avg_blocks(b_buf, fwd_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_b[blk_no]); |
| 582 | } |
| 583 | } |
| 584 | } |
| 585 | if num_mv != 0 && b_data[cur_mb].cbp != 0 { |
| 586 | blockdsp::add_blocks(b_buf, mb_x, mb_y, &b_data[cur_mb].blk); |
| 587 | } |
| 588 | cur_mb += 1; |
| 589 | } |
| 590 | } |
| 591 | } |