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Commit | Line | Data |
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32007ad9 | 1 | //use std::mem; |
b4d5b851 KS |
2 | use nihav_core::codecs::DecoderError; |
3 | use nihav_core::frame::*; | |
88c58b1b KS |
4 | use super::super::*; |
5 | use super::super::blockdsp; | |
cf64af13 | 6 | use super::*; |
7b6e074c | 7 | //use super::code::*; |
b4d5b851 | 8 | use nihav_core::formats; |
cf64af13 | 9 | |
cf64af13 KS |
10 | #[allow(dead_code)] |
11 | struct MVInfo { | |
12 | mv: Vec<MV>, | |
13 | mb_w: usize, | |
14 | mb_stride: usize, | |
15 | mb_start: usize, | |
16 | top: bool, | |
2324f30b | 17 | mvmode: MVMode, |
cf64af13 KS |
18 | } |
19 | ||
20 | impl MVInfo { | |
2324f30b KS |
21 | fn new() -> Self { MVInfo{ mv: Vec::new(), mb_w: 0, mb_stride: 0, mb_start: 0, top: true, mvmode: MVMode::Old } } |
22 | fn reset(&mut self, mb_w: usize, mb_start: usize, mvmode: MVMode) { | |
cf64af13 KS |
23 | self.mb_start = mb_start; |
24 | self.mb_w = mb_w; | |
25 | self.mb_stride = mb_w * 2; | |
cf64af13 | 26 | self.mv.resize(self.mb_stride * 3, ZERO_MV); |
2324f30b | 27 | self.mvmode = mvmode; |
cf64af13 KS |
28 | } |
29 | fn update_row(&mut self) { | |
30 | self.mb_start = self.mb_w + 1; | |
31 | self.top = false; | |
32 | for i in 0..self.mb_stride { | |
33 | self.mv[i] = self.mv[self.mb_stride * 2 + i]; | |
34 | } | |
35 | } | |
36 | #[allow(non_snake_case)] | |
32007ad9 | 37 | fn predict(&mut self, mb_x: usize, blk_no: usize, use4: bool, diff: MV, first_line: bool, first_mb: bool) -> MV { |
cf64af13 KS |
38 | let A; |
39 | let B; | |
40 | let C; | |
41 | let last = mb_x == self.mb_w - 1; | |
cf64af13 KS |
42 | match blk_no { |
43 | 0 => { | |
44 | if mb_x != self.mb_start { | |
32007ad9 KS |
45 | A = if !first_mb { self.mv[self.mb_stride + mb_x * 2 - 1] } else { ZERO_MV }; |
46 | B = if !first_line { self.mv[ mb_x * 2] } else { A }; | |
47 | C = if !first_line && !last { self.mv[mb_x * 2 + 2] } else { ZERO_MV }; | |
cf64af13 KS |
48 | } else { |
49 | A = ZERO_MV; B = ZERO_MV; C = ZERO_MV; | |
50 | } | |
51 | }, | |
52 | 1 => { | |
53 | A = self.mv[self.mb_stride + mb_x * 2]; | |
32007ad9 | 54 | B = if !first_line { self.mv[mb_x * 2 + 1] } else { A }; |
effbebce | 55 | C = if !first_line && !last { self.mv[mb_x * 2 + 2] } else { ZERO_MV/*A*/ }; |
cf64af13 KS |
56 | }, |
57 | 2 => { | |
58 | A = if mb_x != self.mb_start { self.mv[self.mb_stride * 2 + mb_x * 2 - 1] } else { ZERO_MV }; | |
59 | B = self.mv[self.mb_stride + mb_x * 2]; | |
60 | C = self.mv[self.mb_stride + mb_x * 2 + 1]; | |
61 | }, | |
62 | 3 => { | |
63 | A = self.mv[self.mb_stride * 2 + mb_x * 2]; | |
64 | B = self.mv[self.mb_stride * 1 + mb_x * 2 + 1]; | |
65 | C = self.mv[self.mb_stride * 1 + mb_x * 2]; | |
66 | }, | |
67 | _ => { return ZERO_MV; } | |
68 | } | |
cf64af13 | 69 | let pred_mv = MV::pred(A, B, C); |
2324f30b | 70 | let new_mv = MV::add_umv(pred_mv, diff, self.mvmode); |
cf64af13 KS |
71 | if !use4 { |
72 | self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = new_mv; | |
73 | self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = new_mv; | |
74 | self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = new_mv; | |
75 | self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = new_mv; | |
76 | } else { | |
77 | match blk_no { | |
78 | 0 => { self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = new_mv; }, | |
79 | 1 => { self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = new_mv; }, | |
80 | 2 => { self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = new_mv; }, | |
81 | 3 => { self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = new_mv; }, | |
82 | _ => {}, | |
83 | }; | |
84 | } | |
1a151e53 | 85 | |
cf64af13 KS |
86 | new_mv |
87 | } | |
88 | fn set_zero_mv(&mut self, mb_x: usize) { | |
89 | self.mv[self.mb_stride * 1 + mb_x * 2 + 0] = ZERO_MV; | |
90 | self.mv[self.mb_stride * 1 + mb_x * 2 + 1] = ZERO_MV; | |
91 | self.mv[self.mb_stride * 2 + mb_x * 2 + 0] = ZERO_MV; | |
92 | self.mv[self.mb_stride * 2 + mb_x * 2 + 1] = ZERO_MV; | |
93 | } | |
effbebce KS |
94 | fn get_mv(&self, mb_x: usize, blk_no: usize) -> MV { |
95 | self.mv[self.mb_stride + mb_x * 2 + (blk_no & 1) + (blk_no >> 1) * self.mb_stride] | |
96 | } | |
cf64af13 KS |
97 | } |
98 | ||
21c16d5f KS |
99 | #[allow(dead_code)] |
100 | #[derive(Clone,Copy)] | |
101 | struct BMB { | |
102 | num_mv: usize, | |
103 | mv_f: [MV; 4], | |
104 | mv_b: [MV; 4], | |
105 | fwd: bool, | |
106 | blk: [[i16; 64]; 6], | |
107 | cbp: u8, | |
108 | } | |
109 | ||
110 | impl BMB { | |
111 | 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} } | |
112 | } | |
113 | ||
ef3209c7 KS |
114 | #[derive(Clone,Copy)] |
115 | struct PredCoeffs { | |
116 | hor: [[i16; 8]; 6], | |
117 | ver: [[i16; 8]; 6], | |
118 | } | |
119 | ||
120 | const ZERO_PRED_COEFFS: PredCoeffs = PredCoeffs { hor: [[0; 8]; 6], ver: [[0; 8]; 6] }; | |
121 | ||
88c58b1b | 122 | pub struct H263BaseDecoder { |
cf64af13 KS |
123 | w: usize, |
124 | h: usize, | |
125 | mb_w: usize, | |
126 | mb_h: usize, | |
127 | num_mb: usize, | |
128 | ftype: Type, | |
32007ad9 KS |
129 | ipbs: IPBShuffler, |
130 | next_ts: u16, | |
131 | last_ts: u16, | |
132 | tsdiff: u16, | |
21c16d5f KS |
133 | has_b: bool, |
134 | b_data: Vec<BMB>, | |
ef3209c7 | 135 | pred_coeffs: Vec<PredCoeffs>, |
42a59352 | 136 | is_gob: bool, |
b20ff290 | 137 | slice_reset: bool, |
32007ad9 KS |
138 | may_have_b_frames: bool, |
139 | mv_data: Vec<BlockMVInfo>, | |
ef3209c7 KS |
140 | } |
141 | ||
142 | #[inline] | |
143 | fn clip_dc(dc: i16) -> i16 { | |
144 | if dc < 0 { 0 } | |
145 | else if dc > 2046 { 2046 } | |
146 | else { (dc + 1) & !1 } | |
147 | } | |
148 | ||
149 | #[inline] | |
150 | fn clip_ac(ac: i16) -> i16 { | |
151 | if ac < -2048 { -2048 } | |
152 | else if ac > 2047 { 2047 } | |
153 | else { ac } | |
cf64af13 KS |
154 | } |
155 | ||
156 | #[allow(dead_code)] | |
88c58b1b | 157 | impl H263BaseDecoder { |
b20ff290 | 158 | pub fn new_with_opts(is_gob: bool, slice_reset: bool, may_have_b_frames: bool) -> Self { |
88c58b1b | 159 | H263BaseDecoder{ |
cf64af13 KS |
160 | w: 0, h: 0, mb_w: 0, mb_h: 0, num_mb: 0, |
161 | ftype: Type::Special, | |
32007ad9 KS |
162 | ipbs: IPBShuffler::new(), |
163 | last_ts: 0, next_ts: 0, tsdiff: 0, | |
21c16d5f | 164 | has_b: false, b_data: Vec::new(), |
ef3209c7 | 165 | pred_coeffs: Vec::new(), |
e243ceb4 KS |
166 | is_gob, slice_reset, |
167 | may_have_b_frames, | |
32007ad9 | 168 | mv_data: Vec::new(), |
cf64af13 KS |
169 | } |
170 | } | |
32007ad9 | 171 | pub fn new(is_gob: bool) -> Self { |
b20ff290 | 172 | Self::new_with_opts(is_gob, true, false) |
32007ad9 KS |
173 | } |
174 | pub fn new_b_frames(is_gob: bool) -> Self { | |
b20ff290 | 175 | Self::new_with_opts(is_gob, true, true) |
32007ad9 | 176 | } |
cf64af13 KS |
177 | |
178 | pub fn is_intra(&self) -> bool { self.ftype == Type::I } | |
2eb21477 KS |
179 | pub fn get_frame_type(&self) -> FrameType { |
180 | match self.ftype { | |
181 | Type::I => FrameType::I, | |
182 | Type::P => FrameType::P, | |
183 | Type::B => FrameType::B, | |
184 | Type::PB => FrameType::P, | |
185 | Type::Skip => FrameType::Skip, | |
186 | Type::Special => FrameType::Skip, | |
187 | } | |
188 | } | |
cf64af13 KS |
189 | pub fn get_dimensions(&self) -> (usize, usize) { (self.w, self.h) } |
190 | ||
2a2aa421 | 191 | pub fn parse_frame(&mut self, bd: &mut BlockDecoder, bdsp: &BlockDSP) -> DecoderResult<NABufferType> { |
cf64af13 | 192 | let pinfo = bd.decode_pichdr()?; |
21c16d5f | 193 | let mut mvi = MVInfo::new(); |
15facd16 | 194 | let mut mvi2 = MVInfo::new(); |
f2f1afb2 | 195 | let mut cbpi = CBPInfo::new(); |
cf64af13 KS |
196 | |
197 | //todo handle res change | |
198 | self.w = pinfo.w; | |
199 | self.h = pinfo.h; | |
200 | self.mb_w = (pinfo.w + 15) >> 4; | |
201 | self.mb_h = (pinfo.h + 15) >> 4; | |
202 | self.num_mb = self.mb_w * self.mb_h; | |
203 | self.ftype = pinfo.mode; | |
21c16d5f KS |
204 | self.has_b = pinfo.is_pb(); |
205 | ||
206 | if self.has_b { | |
32007ad9 | 207 | self.mv_data.truncate(0); |
21c16d5f | 208 | } |
cf64af13 | 209 | |
32007ad9 KS |
210 | let save_b_data = pinfo.mode.is_ref() && self.may_have_b_frames; |
211 | if save_b_data { | |
212 | self.mv_data.truncate(0); | |
213 | } | |
15facd16 | 214 | let is_b = pinfo.mode == Type::B; |
cf64af13 | 215 | |
88e9abd4 KS |
216 | let tsdiff = if pinfo.is_pb() { pinfo.ts.wrapping_sub(self.last_ts) >> 1 } |
217 | else { self.last_ts.wrapping_sub(self.next_ts) >> 1 }; | |
32007ad9 KS |
218 | let bsdiff = if pinfo.is_pb() { (pinfo.get_pbinfo().get_trb() as u16) << 7 } |
219 | else { pinfo.ts.wrapping_sub(self.next_ts) >> 1 }; | |
21c16d5f | 220 | |
cf64af13 KS |
221 | let fmt = formats::YUV420_FORMAT; |
222 | let vinfo = NAVideoInfo::new(self.w, self.h, false, fmt); | |
e243ceb4 | 223 | let bufinfo = alloc_video_buffer(vinfo, 4)?; |
cf64af13 KS |
224 | let mut buf = bufinfo.get_vbuf().unwrap(); |
225 | ||
42a59352 | 226 | let mut slice = if self.is_gob { |
2a2aa421 KS |
227 | SliceInfo::get_default_slice(&pinfo) |
228 | } else { | |
229 | bd.decode_slice_header(&pinfo)? | |
230 | }; | |
2324f30b | 231 | mvi.reset(self.mb_w, 0, pinfo.get_mvmode()); |
effbebce | 232 | if is_b || pinfo.is_pb() { |
15facd16 KS |
233 | mvi2.reset(self.mb_w, 0, pinfo.get_mvmode()); |
234 | } | |
f2f1afb2 | 235 | cbpi.reset(self.mb_w); |
cf64af13 KS |
236 | |
237 | let mut blk: [[i16; 64]; 6] = [[0; 64]; 6]; | |
2a2aa421 KS |
238 | let mut sstate = SliceState::new(pinfo.mode == Type::I); |
239 | let mut mb_pos = 0; | |
ef3209c7 KS |
240 | let apply_acpred = (pinfo.mode == Type::I) && pinfo.plusinfo.is_some() && pinfo.plusinfo.unwrap().aic; |
241 | if apply_acpred { | |
242 | self.pred_coeffs.truncate(0); | |
243 | self.pred_coeffs.resize(self.mb_w * self.mb_h, ZERO_PRED_COEFFS); | |
244 | } | |
43c8b55e | 245 | sstate.quant = slice.quant; |
cf64af13 KS |
246 | for mb_y in 0..self.mb_h { |
247 | for mb_x in 0..self.mb_w { | |
248 | for i in 0..6 { for j in 0..64 { blk[i][j] = 0; } } | |
249 | ||
2a2aa421 | 250 | if slice.is_at_end(mb_pos) || (slice.needs_check() && mb_pos > 0 && bd.is_slice_end()) { |
cf64af13 | 251 | slice = bd.decode_slice_header(&pinfo)?; |
b20ff290 | 252 | if !self.is_gob && self.slice_reset { |
6f21f5f4 | 253 | mvi.reset(self.mb_w, mb_x, pinfo.get_mvmode()); |
effbebce | 254 | if is_b || pinfo.is_pb() { |
15facd16 KS |
255 | mvi2.reset(self.mb_w, mb_x, pinfo.get_mvmode()); |
256 | } | |
6f21f5f4 | 257 | cbpi.reset(self.mb_w); |
32007ad9 | 258 | sstate.reset_slice(mb_x, mb_y); |
43c8b55e | 259 | sstate.quant = slice.quant; |
6f21f5f4 | 260 | } |
cf64af13 KS |
261 | } |
262 | ||
2a2aa421 | 263 | let binfo = bd.decode_block_header(&pinfo, &slice, &sstate)?; |
cf64af13 | 264 | let cbp = binfo.get_cbp(); |
f2f1afb2 KS |
265 | cbpi.set_cbp(mb_x, cbp); |
266 | cbpi.set_q(mb_x, binfo.get_q()); | |
43c8b55e | 267 | sstate.quant = binfo.get_q(); |
cf64af13 | 268 | if binfo.is_intra() { |
32007ad9 KS |
269 | if save_b_data { |
270 | self.mv_data.push(BlockMVInfo::Intra); | |
271 | } | |
cf64af13 | 272 | for i in 0..6 { |
2a2aa421 | 273 | bd.decode_block_intra(&binfo, &sstate, binfo.get_q(), i, (cbp & (1 << (5 - i))) != 0, &mut blk[i])?; |
ef3209c7 | 274 | if apply_acpred && (binfo.acpred != ACPredMode::None) { |
2eb21477 | 275 | let has_b = (i == 1) || (i == 3) || !sstate.first_mb; |
6f21f5f4 | 276 | let has_a = (i == 2) || (i == 3) || !sstate.first_line; |
ef3209c7 KS |
277 | let (b_mb, b_blk) = if has_b { |
278 | if (i == 1) || (i == 3) { | |
279 | (mb_pos, i - 1) | |
280 | } else if i < 4 { | |
281 | (mb_pos - 1, i + 1) | |
282 | } else { | |
283 | (mb_pos - 1, i) | |
284 | } | |
285 | } else { (0, 0) }; | |
286 | let (a_mb, a_blk) = if has_a { | |
287 | if (i == 2) || (i == 3) { | |
288 | (mb_pos, i - 2) | |
289 | } else if i < 4 { | |
290 | (mb_pos - self.mb_w, i + 2) | |
291 | } else { | |
292 | (mb_pos - self.mb_w, i) | |
293 | } | |
294 | } else { (0, 0) }; | |
295 | match binfo.acpred { | |
296 | ACPredMode::DC => { | |
297 | let dc; | |
298 | if has_a && has_b { | |
299 | dc = (self.pred_coeffs[b_mb].hor[b_blk][0] + self.pred_coeffs[a_mb].ver[a_blk][0]) / 2; | |
300 | } else if has_a { | |
301 | dc = self.pred_coeffs[a_mb].ver[a_blk][0]; | |
302 | } else if has_b { | |
303 | dc = self.pred_coeffs[b_mb].hor[b_blk][0]; | |
304 | } else { | |
305 | dc = 1024; | |
306 | } | |
307 | blk[i][0] = clip_dc(blk[i][0] + dc); | |
308 | }, | |
309 | ACPredMode::Hor => { | |
310 | if has_b { | |
311 | for k in 0..8 { | |
312 | blk[i][k * 8] += self.pred_coeffs[b_mb].hor[b_blk][k]; | |
313 | } | |
314 | for k in 1..8 { | |
315 | blk[i][k * 8] = clip_ac(blk[i][k * 8]); | |
316 | } | |
317 | } else { | |
318 | blk[i][0] += 1024; | |
319 | } | |
320 | blk[i][0] = clip_dc(blk[i][0]); | |
321 | }, | |
322 | ACPredMode::Ver => { | |
323 | if has_a { | |
324 | for k in 0..8 { | |
325 | blk[i][k] += self.pred_coeffs[a_mb].ver[a_blk][k]; | |
326 | } | |
327 | for k in 1..8 { | |
328 | blk[i][k] = clip_ac(blk[i][k]); | |
329 | } | |
330 | } else { | |
331 | blk[i][0] += 1024; | |
332 | } | |
333 | blk[i][0] = clip_dc(blk[i][0]); | |
334 | }, | |
335 | ACPredMode::None => {}, | |
336 | }; | |
337 | for t in 0..8 { self.pred_coeffs[mb_pos].hor[i][t] = blk[i][t * 8]; } | |
338 | for t in 0..8 { self.pred_coeffs[mb_pos].ver[i][t] = blk[i][t]; } | |
339 | } | |
7b6e074c | 340 | bdsp.idct(&mut blk[i]); |
cf64af13 KS |
341 | } |
342 | blockdsp::put_blocks(&mut buf, mb_x, mb_y, &blk); | |
343 | mvi.set_zero_mv(mb_x); | |
15facd16 KS |
344 | if is_b { |
345 | mvi2.set_zero_mv(mb_x); | |
effbebce KS |
346 | } else if pinfo.is_pb() { |
347 | mvi2.predict(mb_x, 0, false, binfo.get_mv2(0), sstate.first_line, sstate.first_mb); | |
15facd16 | 348 | } |
2eb21477 | 349 | } else if (binfo.mode != Type::B) && !binfo.is_skipped() { |
cf64af13 | 350 | if binfo.get_num_mvs() == 1 { |
32007ad9 KS |
351 | let mv = mvi.predict(mb_x, 0, false, binfo.get_mv(0), sstate.first_line, sstate.first_mb); |
352 | if save_b_data { | |
353 | self.mv_data.push(BlockMVInfo::Inter_1MV(mv)); | |
354 | } | |
355 | if let Some(ref srcbuf) = self.ipbs.get_lastref() { | |
2a2aa421 | 356 | bdsp.copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, mv); |
cf64af13 | 357 | } |
effbebce KS |
358 | if pinfo.is_pb() { |
359 | mvi2.predict(mb_x, 0, false, binfo.get_mv(0), sstate.first_line, sstate.first_mb); | |
360 | } | |
cf64af13 | 361 | } else { |
32007ad9 | 362 | let mut mv: [MV; 4] = [ZERO_MV, ZERO_MV, ZERO_MV, ZERO_MV]; |
cf64af13 | 363 | for blk_no in 0..4 { |
32007ad9 KS |
364 | mv[blk_no] = mvi.predict(mb_x, blk_no, true, binfo.get_mv(blk_no), sstate.first_line, sstate.first_mb); |
365 | if let Some(ref srcbuf) = self.ipbs.get_lastref() { | |
2a2aa421 KS |
366 | bdsp.copy_blocks(&mut buf, srcbuf, |
367 | mb_x * 16 + (blk_no & 1) * 8, | |
32007ad9 | 368 | mb_y * 16 + (blk_no & 2) * 4, 8, 8, mv[blk_no]); |
cf64af13 KS |
369 | } |
370 | } | |
effbebce KS |
371 | if pinfo.is_pb() { |
372 | for blk_no in 0..4 { | |
373 | mvi2.predict(mb_x, blk_no, true, binfo.get_mv(blk_no), sstate.first_line, sstate.first_mb); | |
374 | } | |
375 | } | |
32007ad9 KS |
376 | if save_b_data { |
377 | self.mv_data.push(BlockMVInfo::Inter_4MV(mv)); | |
378 | } | |
cf64af13 KS |
379 | } |
380 | for i in 0..6 { | |
2a2aa421 | 381 | bd.decode_block_inter(&binfo, &sstate, binfo.get_q(), i, ((cbp >> (5 - i)) & 1) != 0, &mut blk[i])?; |
7b6e074c | 382 | bdsp.idct(&mut blk[i]); |
cf64af13 KS |
383 | } |
384 | blockdsp::add_blocks(&mut buf, mb_x, mb_y, &blk); | |
effbebce | 385 | if is_b && !pinfo.is_pb() { |
d609e5d5 KS |
386 | mvi2.set_zero_mv(mb_x); |
387 | } | |
2eb21477 | 388 | } else if binfo.mode != Type::B { |
32007ad9 | 389 | self.mv_data.push(BlockMVInfo::Inter_1MV(ZERO_MV)); |
cf64af13 | 390 | mvi.set_zero_mv(mb_x); |
effbebce | 391 | if is_b || pinfo.is_pb() { |
d609e5d5 KS |
392 | mvi2.set_zero_mv(mb_x); |
393 | } | |
32007ad9 | 394 | if let Some(ref srcbuf) = self.ipbs.get_lastref() { |
2a2aa421 | 395 | bdsp.copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, ZERO_MV); |
cf64af13 | 396 | } |
2eb21477 | 397 | } else { |
32007ad9 KS |
398 | let ref_mv_info = self.mv_data[mb_pos]; |
399 | let has_fwd = binfo.get_num_mvs() > 0; | |
400 | let has_bwd = binfo.get_num_mvs2() > 0; | |
32007ad9 | 401 | //todo refactor |
15facd16 KS |
402 | if has_fwd || has_bwd { |
403 | let fwd_mv; | |
404 | if has_fwd { | |
405 | fwd_mv = mvi.predict(mb_x, 0, false, binfo.get_mv(0), sstate.first_line, sstate.first_mb); | |
406 | } else { | |
407 | fwd_mv = ZERO_MV; | |
408 | mvi.set_zero_mv(mb_x); | |
409 | } | |
410 | let bwd_mv; | |
411 | if has_bwd { | |
412 | bwd_mv = mvi2.predict(mb_x, 0, false, binfo.get_mv2(0), sstate.first_line, sstate.first_mb); | |
413 | } else { | |
414 | bwd_mv = ZERO_MV; | |
415 | mvi2.set_zero_mv(mb_x); | |
416 | } | |
417 | if let (Some(ref fwd_buf), Some(ref bck_buf)) = (self.ipbs.get_nextref(), self.ipbs.get_lastref()) { | |
418 | if has_fwd && has_bwd { | |
419 | bdsp.copy_blocks(&mut buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, fwd_mv); | |
420 | bdsp.avg_blocks (&mut buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, bwd_mv); | |
421 | } else if has_fwd { | |
422 | bdsp.copy_blocks(&mut buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, fwd_mv); | |
423 | } else { | |
424 | bdsp.copy_blocks(&mut buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, bwd_mv); | |
32007ad9 KS |
425 | } |
426 | } | |
427 | } else { | |
15facd16 KS |
428 | if let BlockMVInfo::Inter_4MV(mvs) = ref_mv_info { |
429 | for blk_no in 0..4 { | |
430 | let ref_mv = mvs[blk_no]; | |
431 | let ref_mv_fwd = ref_mv.scale(bsdiff, tsdiff); | |
432 | let ref_mv_bwd = ref_mv - ref_mv_fwd; | |
433 | let xoff = mb_x * 16 + (blk_no & 1) * 8; | |
434 | let yoff = mb_y * 16 + (blk_no & 2) * 4; | |
435 | if let (Some(ref fwd_buf), Some(ref bck_buf)) = (self.ipbs.get_nextref(), self.ipbs.get_lastref()) { | |
436 | bdsp.copy_blocks(&mut buf, fwd_buf, xoff, yoff, 8, 8, ref_mv_fwd); | |
437 | bdsp.avg_blocks (&mut buf, bck_buf, xoff, yoff, 8, 8, ref_mv_bwd); | |
438 | } | |
439 | } | |
440 | } else { | |
441 | let ref_mv = if let BlockMVInfo::Inter_1MV(mv_) = ref_mv_info { mv_ } else { ZERO_MV }; | |
442 | let ref_mv_fwd = ref_mv.scale(bsdiff, tsdiff); | |
443 | let ref_mv_bwd = MV::b_sub(ref_mv, ref_mv_fwd, ZERO_MV, bsdiff, tsdiff); | |
444 | ||
445 | if let (Some(ref fwd_buf), Some(ref bck_buf)) = (self.ipbs.get_nextref(), self.ipbs.get_lastref()) { | |
32007ad9 | 446 | bdsp.copy_blocks(&mut buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, ref_mv_fwd); |
15facd16 | 447 | bdsp.avg_blocks (&mut buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, ref_mv_bwd); |
32007ad9 KS |
448 | } |
449 | } | |
15facd16 KS |
450 | mvi.set_zero_mv(mb_x); |
451 | mvi2.set_zero_mv(mb_x); | |
32007ad9 | 452 | } |
2eb21477 KS |
453 | if cbp != 0 { |
454 | for i in 0..6 { | |
455 | bd.decode_block_inter(&binfo, &sstate, binfo.get_q(), i, ((cbp >> (5 - i)) & 1) != 0, &mut blk[i])?; | |
7b6e074c | 456 | bdsp.idct(&mut blk[i]); |
2eb21477 | 457 | } |
32007ad9 | 458 | blockdsp::add_blocks(&mut buf, mb_x, mb_y, &blk); |
2eb21477 | 459 | } |
cf64af13 | 460 | } |
21c16d5f KS |
461 | if pinfo.is_pb() { |
462 | let mut b_mb = BMB::new(); | |
cf64af13 | 463 | let cbp = binfo.get_cbp_b(); |
21c16d5f KS |
464 | let bq = (((pinfo.get_pbinfo().get_dbquant() + 5) as u16) * (binfo.get_q() as u16)) >> 2; |
465 | let bquant; | |
466 | if bq < 1 { bquant = 1; } | |
467 | else if bq > 31 { bquant = 31; } | |
468 | else { bquant = bq as u8; } | |
469 | ||
470 | b_mb.cbp = cbp; | |
cf64af13 | 471 | for i in 0..6 { |
2a2aa421 | 472 | bd.decode_block_inter(&binfo, &sstate, bquant, i, (cbp & (1 << (5 - i))) != 0, &mut b_mb.blk[i])?; |
7b6e074c | 473 | bdsp.idct(&mut b_mb.blk[i]); |
cf64af13 | 474 | } |
21c16d5f | 475 | |
effbebce | 476 | let is_fwd = binfo.is_b_fwd(); |
21c16d5f | 477 | b_mb.fwd = is_fwd; |
effbebce KS |
478 | if binfo.get_num_mvs() != 4 { |
479 | let ref_mv = mvi2.get_mv(mb_x, 0); | |
480 | let b_mv = if binfo.is_intra() { binfo.get_mv2(1) } else { binfo.get_mv2(0) }; | |
481 | let src_mv = if is_fwd { ZERO_MV } else { ref_mv.scale(bsdiff, tsdiff) }; | |
482 | let mv_f = MV::add_umv(src_mv, b_mv, pinfo.get_mvmode()); | |
483 | let mv_b = MV::b_sub(ref_mv, mv_f, b_mv, bsdiff, tsdiff); | |
21c16d5f KS |
484 | b_mb.mv_f[0] = mv_f; |
485 | b_mb.mv_b[0] = mv_b; | |
effbebce | 486 | b_mb.num_mv = 1; |
21c16d5f KS |
487 | } else { |
488 | for blk_no in 0..4 { | |
effbebce | 489 | let src_mv = if is_fwd { ZERO_MV } else { mvi2.get_mv(mb_x, blk_no).scale(bsdiff, tsdiff) }; |
2324f30b | 490 | let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_mvmode()); |
effbebce | 491 | let mv_b = MV::b_sub(mvi2.get_mv(mb_x, blk_no), mv_f, binfo.get_mv2(0), bsdiff, tsdiff); |
21c16d5f KS |
492 | b_mb.mv_f[blk_no] = mv_f; |
493 | b_mb.mv_b[blk_no] = mv_b; | |
cf64af13 | 494 | } |
effbebce | 495 | b_mb.num_mv = 4; |
cf64af13 | 496 | } |
21c16d5f | 497 | self.b_data.push(b_mb); |
cf64af13 | 498 | } |
2a2aa421 KS |
499 | sstate.next_mb(); |
500 | mb_pos += 1; | |
cf64af13 | 501 | } |
2a2aa421 KS |
502 | if let Some(plusinfo) = pinfo.plusinfo { |
503 | if plusinfo.deblock { | |
504 | bdsp.filter_row(&mut buf, mb_y, self.mb_w, &cbpi); | |
505 | } | |
f2f1afb2 | 506 | } |
cf64af13 | 507 | mvi.update_row(); |
effbebce | 508 | if is_b || pinfo.is_pb() { |
d609e5d5 KS |
509 | mvi2.update_row(); |
510 | } | |
f2f1afb2 | 511 | cbpi.update_row(); |
2a2aa421 | 512 | sstate.new_row(); |
cf64af13 | 513 | } |
32007ad9 KS |
514 | |
515 | if pinfo.mode.is_ref() { | |
516 | self.ipbs.add_frame(buf); | |
517 | self.next_ts = self.last_ts; | |
518 | self.last_ts = pinfo.ts; | |
519 | self.tsdiff = tsdiff; | |
520 | } | |
521 | ||
cf64af13 KS |
522 | Ok(bufinfo) |
523 | } | |
d8ee06da KS |
524 | pub fn flush(&mut self) { |
525 | self.ipbs.clear(); | |
526 | } | |
cf64af13 | 527 | |
2a2aa421 | 528 | pub fn get_bframe(&mut self, bdsp: &BlockDSP) -> DecoderResult<NABufferType> { |
fdb4b2fb | 529 | if !self.has_b || self.ipbs.get_lastref().is_none() || self.ipbs.get_nextref().is_none() { |
21c16d5f KS |
530 | return Err(DecoderError::MissingReference); |
531 | } | |
532 | self.has_b = false; | |
533 | ||
534 | let fmt = formats::YUV420_FORMAT; | |
535 | let vinfo = NAVideoInfo::new(self.w, self.h, false, fmt); | |
e243ceb4 | 536 | let bufinfo = alloc_video_buffer(vinfo, 4)?; |
21c16d5f KS |
537 | let mut b_buf = bufinfo.get_vbuf().unwrap(); |
538 | ||
32007ad9 | 539 | if let (Some(ref bck_buf), Some(ref fwd_buf)) = (self.ipbs.get_nextref(), self.ipbs.get_lastref()) { |
fdb4b2fb | 540 | recon_b_frame(&mut b_buf, fwd_buf, bck_buf, self.mb_w, self.mb_h, self.b_data.as_slice(), bdsp); |
21c16d5f KS |
541 | } |
542 | ||
543 | self.b_data.truncate(0); | |
544 | Ok(bufinfo) | |
545 | } | |
546 | } | |
547 | ||
548 | fn recon_b_frame(b_buf: &mut NAVideoBuffer<u8>, bck_buf: &NAVideoBuffer<u8>, fwd_buf: &NAVideoBuffer<u8>, | |
fdb4b2fb | 549 | mb_w: usize, mb_h: usize, b_data: &[BMB], bdsp: &BlockDSP) { |
f2f1afb2 | 550 | let mut cbpi = CBPInfo::new(); |
21c16d5f | 551 | let mut cur_mb = 0; |
f2f1afb2 | 552 | cbpi.reset(mb_w); |
21c16d5f KS |
553 | for mb_y in 0..mb_h { |
554 | for mb_x in 0..mb_w { | |
555 | let num_mv = b_data[cur_mb].num_mv; | |
556 | let is_fwd = b_data[cur_mb].fwd; | |
f2f1afb2 KS |
557 | let cbp = b_data[cur_mb].cbp; |
558 | cbpi.set_cbp(mb_x, cbp); | |
559 | if num_mv == 1 { | |
2a2aa421 | 560 | bdsp.copy_blocks(b_buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_b[0]); |
21c16d5f | 561 | if !is_fwd { |
2a2aa421 | 562 | bdsp.avg_blocks(b_buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_f[0]); |
21c16d5f KS |
563 | } |
564 | } else { | |
565 | for blk_no in 0..4 { | |
566 | let xpos = mb_x * 16 + (blk_no & 1) * 8; | |
567 | let ypos = mb_y * 16 + (blk_no & 2) * 4; | |
2a2aa421 | 568 | bdsp.copy_blocks(b_buf, fwd_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_b[blk_no]); |
21c16d5f | 569 | if !is_fwd { |
2a2aa421 | 570 | bdsp.avg_blocks(b_buf, bck_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_f[blk_no]); |
21c16d5f KS |
571 | } |
572 | } | |
573 | } | |
f2f1afb2 | 574 | if cbp != 0 { |
21c16d5f KS |
575 | blockdsp::add_blocks(b_buf, mb_x, mb_y, &b_data[cur_mb].blk); |
576 | } | |
577 | cur_mb += 1; | |
cf64af13 | 578 | } |
f2f1afb2 | 579 | cbpi.update_row(); |
cf64af13 KS |
580 | } |
581 | } |