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Commit | Line | Data |
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cf64af13 | 1 | use std::mem; |
88c58b1b KS |
2 | use frame::*; |
3 | use super::super::*; | |
4 | use super::super::blockdsp; | |
cf64af13 | 5 | use super::*; |
88c58b1b | 6 | use super::code::*; |
cf64af13 KS |
7 | use formats; |
8 | ||
cf64af13 KS |
9 | #[allow(dead_code)] |
10 | struct MVInfo { | |
11 | mv: Vec<MV>, | |
12 | mb_w: usize, | |
13 | mb_stride: usize, | |
14 | mb_start: usize, | |
15 | top: bool, | |
16 | umv: bool, | |
17 | } | |
18 | ||
19 | impl MVInfo { | |
20 | fn new() -> Self { MVInfo{ mv: Vec::new(), mb_w: 0, mb_stride: 0, mb_start: 0, top: true, umv: false } } | |
21 | fn reset(&mut self, mb_w: usize, mb_start: usize, umv: bool) { | |
22 | self.mb_start = mb_start; | |
23 | self.mb_w = mb_w; | |
24 | self.mb_stride = mb_w * 2; | |
25 | self.top = true; | |
26 | self.mv.resize(self.mb_stride * 3, ZERO_MV); | |
27 | self.umv = umv; | |
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)] | |
37 | fn predict(&mut self, mb_x: usize, blk_no: usize, use4: bool, diff: MV) -> MV { | |
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 { | |
45 | A = if mb_x != 0 { self.mv[self.mb_stride + mb_x * 2 - 1] } else { ZERO_MV }; | |
46 | B = if !self.top { self.mv[ mb_x * 2] } else { A }; | |
47 | C = if !self.top && !last { self.mv[mb_x * 2 + 2] } else { ZERO_MV }; | |
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]; | |
54 | B = if !self.top { self.mv[mb_x * 2 + 1] } else { A }; | |
55 | C = if !self.top && !last { self.mv[mb_x * 2 + 2] } else { A }; | |
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 KS |
69 | let pred_mv = MV::pred(A, B, C); |
70 | let new_mv = MV::add_umv(pred_mv, diff, self.umv); | |
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 | } | |
85 | ||
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 | } | |
94 | } | |
95 | ||
96 | fn copy_blocks(dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV) { | |
97 | let srcx = ((mv.x >> 1) as isize) + (xpos as isize); | |
98 | let srcy = ((mv.y >> 1) as isize) + (ypos as isize); | |
99 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; | |
100 | ||
101 | blockdsp::copy_blocks(dst, src, xpos, ypos, srcx, srcy, w, h, 0, 1, mode, H263_INTERP_FUNCS); | |
102 | } | |
103 | ||
21c16d5f KS |
104 | fn avg_blocks(dst: &mut NAVideoBuffer<u8>, src: &NAVideoBuffer<u8>, xpos: usize, ypos: usize, w: usize, h: usize, mv: MV) { |
105 | let srcx = ((mv.x >> 1) as isize) + (xpos as isize); | |
106 | let srcy = ((mv.y >> 1) as isize) + (ypos as isize); | |
107 | let mode = ((mv.x & 1) + (mv.y & 1) * 2) as usize; | |
108 | ||
109 | blockdsp::copy_blocks(dst, src, xpos, ypos, srcx, srcy, w, h, 0, 1, mode, H263_INTERP_AVG_FUNCS); | |
110 | } | |
111 | ||
112 | #[allow(dead_code)] | |
113 | #[derive(Clone,Copy)] | |
114 | struct BMB { | |
115 | num_mv: usize, | |
116 | mv_f: [MV; 4], | |
117 | mv_b: [MV; 4], | |
118 | fwd: bool, | |
119 | blk: [[i16; 64]; 6], | |
120 | cbp: u8, | |
121 | } | |
122 | ||
123 | impl BMB { | |
124 | 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} } | |
125 | } | |
126 | ||
88c58b1b | 127 | pub struct H263BaseDecoder { |
cf64af13 KS |
128 | w: usize, |
129 | h: usize, | |
130 | mb_w: usize, | |
131 | mb_h: usize, | |
132 | num_mb: usize, | |
133 | ftype: Type, | |
134 | prev_frm: Option<NAVideoBuffer<u8>>, | |
135 | cur_frm: Option<NAVideoBuffer<u8>>, | |
21c16d5f KS |
136 | last_ts: u8, |
137 | has_b: bool, | |
138 | b_data: Vec<BMB>, | |
cf64af13 KS |
139 | } |
140 | ||
141 | #[allow(dead_code)] | |
88c58b1b | 142 | impl H263BaseDecoder { |
cf64af13 | 143 | pub fn new() -> Self { |
88c58b1b | 144 | H263BaseDecoder{ |
cf64af13 KS |
145 | w: 0, h: 0, mb_w: 0, mb_h: 0, num_mb: 0, |
146 | ftype: Type::Special, | |
147 | prev_frm: None, cur_frm: None, | |
21c16d5f KS |
148 | last_ts: 0, |
149 | has_b: false, b_data: Vec::new(), | |
cf64af13 KS |
150 | } |
151 | } | |
152 | ||
153 | pub fn is_intra(&self) -> bool { self.ftype == Type::I } | |
154 | pub fn get_dimensions(&self) -> (usize, usize) { (self.w, self.h) } | |
155 | ||
156 | pub fn parse_frame(&mut self, bd: &mut BlockDecoder) -> DecoderResult<NABufferType> { | |
157 | let pinfo = bd.decode_pichdr()?; | |
21c16d5f | 158 | let mut mvi = MVInfo::new(); |
f2f1afb2 | 159 | let mut cbpi = CBPInfo::new(); |
cf64af13 KS |
160 | |
161 | //todo handle res change | |
162 | self.w = pinfo.w; | |
163 | self.h = pinfo.h; | |
164 | self.mb_w = (pinfo.w + 15) >> 4; | |
165 | self.mb_h = (pinfo.h + 15) >> 4; | |
166 | self.num_mb = self.mb_w * self.mb_h; | |
167 | self.ftype = pinfo.mode; | |
21c16d5f KS |
168 | self.has_b = pinfo.is_pb(); |
169 | ||
170 | if self.has_b { | |
171 | self.b_data.truncate(0); | |
172 | } | |
cf64af13 KS |
173 | |
174 | mem::swap(&mut self.cur_frm, &mut self.prev_frm); | |
cf64af13 | 175 | |
21c16d5f KS |
176 | let tsdiff = pinfo.ts.wrapping_sub(self.last_ts); |
177 | let bsdiff = if pinfo.is_pb() { pinfo.get_pbinfo().get_trb() } else { 0 }; | |
178 | ||
cf64af13 KS |
179 | let fmt = formats::YUV420_FORMAT; |
180 | let vinfo = NAVideoInfo::new(self.w, self.h, false, fmt); | |
181 | let bufret = alloc_video_buffer(vinfo, 4); | |
182 | if let Err(_) = bufret { return Err(DecoderError::InvalidData); } | |
183 | let mut bufinfo = bufret.unwrap(); | |
184 | let mut buf = bufinfo.get_vbuf().unwrap(); | |
185 | ||
cf64af13 KS |
186 | let mut slice = Slice::get_default_slice(&pinfo); |
187 | mvi.reset(self.mb_w, 0, pinfo.get_umv()); | |
f2f1afb2 | 188 | cbpi.reset(self.mb_w); |
cf64af13 KS |
189 | |
190 | let mut blk: [[i16; 64]; 6] = [[0; 64]; 6]; | |
191 | for mb_y in 0..self.mb_h { | |
192 | for mb_x in 0..self.mb_w { | |
193 | for i in 0..6 { for j in 0..64 { blk[i][j] = 0; } } | |
194 | ||
195 | if ((mb_x != 0) || (mb_y != 0)) && bd.is_slice_end() { | |
cf64af13 KS |
196 | slice = bd.decode_slice_header(&pinfo)?; |
197 | mvi.reset(self.mb_w, mb_x, pinfo.get_umv()); | |
f2f1afb2 | 198 | //cbpi.reset(self.mb_w); |
cf64af13 KS |
199 | } |
200 | ||
201 | let binfo = bd.decode_block_header(&pinfo, &slice)?; | |
202 | let cbp = binfo.get_cbp(); | |
f2f1afb2 KS |
203 | cbpi.set_cbp(mb_x, cbp); |
204 | cbpi.set_q(mb_x, binfo.get_q()); | |
cf64af13 KS |
205 | if binfo.is_intra() { |
206 | for i in 0..6 { | |
21c16d5f | 207 | bd.decode_block_intra(&binfo, binfo.get_q(), i, (cbp & (1 << (5 - i))) != 0, &mut blk[i])?; |
cf64af13 KS |
208 | h263_idct(&mut blk[i]); |
209 | } | |
210 | blockdsp::put_blocks(&mut buf, mb_x, mb_y, &blk); | |
211 | mvi.set_zero_mv(mb_x); | |
212 | } else if !binfo.is_skipped() { | |
213 | if binfo.get_num_mvs() == 1 { | |
214 | let mv = mvi.predict(mb_x, 0, false, binfo.get_mv(0)); | |
cf64af13 KS |
215 | if let Some(ref srcbuf) = self.prev_frm { |
216 | copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, mv); | |
217 | } | |
218 | } else { | |
219 | for blk_no in 0..4 { | |
220 | let mv = mvi.predict(mb_x, blk_no, true, binfo.get_mv(blk_no)); | |
cf64af13 KS |
221 | if let Some(ref srcbuf) = self.prev_frm { |
222 | copy_blocks(&mut buf, srcbuf, | |
223 | mb_x * 16 + (blk_no & 1) * 8, | |
224 | mb_y * 16 + (blk_no & 2) * 4, 8, 8, mv); | |
225 | } | |
226 | } | |
cf64af13 KS |
227 | } |
228 | for i in 0..6 { | |
21c16d5f | 229 | bd.decode_block_inter(&binfo, binfo.get_q(), i, ((cbp >> (5 - i)) & 1) != 0, &mut blk[i])?; |
cf64af13 KS |
230 | h263_idct(&mut blk[i]); |
231 | } | |
232 | blockdsp::add_blocks(&mut buf, mb_x, mb_y, &blk); | |
233 | } else { | |
234 | mvi.set_zero_mv(mb_x); | |
235 | if let Some(ref srcbuf) = self.prev_frm { | |
236 | copy_blocks(&mut buf, srcbuf, mb_x * 16, mb_y * 16, 16, 16, ZERO_MV); | |
237 | } | |
238 | } | |
21c16d5f KS |
239 | if pinfo.is_pb() { |
240 | let mut b_mb = BMB::new(); | |
cf64af13 | 241 | let cbp = binfo.get_cbp_b(); |
21c16d5f KS |
242 | let bq = (((pinfo.get_pbinfo().get_dbquant() + 5) as u16) * (binfo.get_q() as u16)) >> 2; |
243 | let bquant; | |
244 | if bq < 1 { bquant = 1; } | |
245 | else if bq > 31 { bquant = 31; } | |
246 | else { bquant = bq as u8; } | |
247 | ||
248 | b_mb.cbp = cbp; | |
cf64af13 | 249 | for i in 0..6 { |
21c16d5f KS |
250 | bd.decode_block_inter(&binfo, bquant, i, (cbp & (1 << (5 - i))) != 0, &mut b_mb.blk[i])?; |
251 | h263_idct(&mut b_mb.blk[i]); | |
cf64af13 | 252 | } |
21c16d5f | 253 | |
88c58b1b | 254 | let is_fwd = !binfo.is_b_fwd(); |
21c16d5f KS |
255 | b_mb.fwd = is_fwd; |
256 | b_mb.num_mv = binfo.get_num_mvs(); | |
257 | if binfo.get_num_mvs() == 0 { | |
258 | b_mb.num_mv = 1; | |
259 | b_mb.mv_f[0] = binfo.get_mv2(1); | |
260 | b_mb.mv_b[0] = binfo.get_mv2(0); | |
88c58b1b KS |
261 | } else if binfo.get_num_mvs() == 1 { |
262 | let src_mv = binfo.get_mv(0).scale(bsdiff, tsdiff); | |
21c16d5f KS |
263 | let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_umv()); |
264 | let mv_b = MV::b_sub(binfo.get_mv(0), mv_f, binfo.get_mv2(0), bsdiff, tsdiff); | |
265 | b_mb.mv_f[0] = mv_f; | |
266 | b_mb.mv_b[0] = mv_b; | |
267 | } else { | |
268 | for blk_no in 0..4 { | |
88c58b1b | 269 | let src_mv = binfo.get_mv(blk_no).scale(bsdiff, tsdiff); |
21c16d5f KS |
270 | let mv_f = MV::add_umv(src_mv, binfo.get_mv2(0), pinfo.get_umv()); |
271 | let mv_b = MV::b_sub(binfo.get_mv(blk_no), mv_f, binfo.get_mv2(0), bsdiff, tsdiff); | |
272 | b_mb.mv_f[blk_no] = mv_f; | |
273 | b_mb.mv_b[blk_no] = mv_b; | |
cf64af13 KS |
274 | } |
275 | } | |
21c16d5f | 276 | self.b_data.push(b_mb); |
cf64af13 | 277 | } |
cf64af13 | 278 | } |
f2f1afb2 KS |
279 | if pinfo.deblock { |
280 | bd.filter_row(&mut buf, mb_y, self.mb_w, &cbpi); | |
281 | } | |
cf64af13 | 282 | mvi.update_row(); |
f2f1afb2 | 283 | cbpi.update_row(); |
cf64af13 | 284 | } |
f2f1afb2 | 285 | |
cf64af13 | 286 | self.cur_frm = Some(buf); |
21c16d5f | 287 | self.last_ts = pinfo.ts; |
cf64af13 KS |
288 | Ok(bufinfo) |
289 | } | |
290 | ||
21c16d5f KS |
291 | pub fn get_bframe(&mut self) -> DecoderResult<NABufferType> { |
292 | if !self.has_b || !self.cur_frm.is_some() || !self.prev_frm.is_some() { | |
293 | return Err(DecoderError::MissingReference); | |
294 | } | |
295 | self.has_b = false; | |
296 | ||
297 | let fmt = formats::YUV420_FORMAT; | |
298 | let vinfo = NAVideoInfo::new(self.w, self.h, false, fmt); | |
299 | let bufret = alloc_video_buffer(vinfo, 4); | |
300 | if let Err(_) = bufret { return Err(DecoderError::InvalidData); } | |
301 | let mut bufinfo = bufret.unwrap(); | |
302 | let mut b_buf = bufinfo.get_vbuf().unwrap(); | |
303 | ||
304 | if let Some(ref bck_buf) = self.prev_frm { | |
305 | if let Some(ref fwd_buf) = self.cur_frm { | |
306 | recon_b_frame(&mut b_buf, bck_buf, fwd_buf, self.mb_w, self.mb_h, &self.b_data); | |
307 | } | |
308 | } | |
309 | ||
310 | self.b_data.truncate(0); | |
311 | Ok(bufinfo) | |
312 | } | |
313 | } | |
314 | ||
315 | fn recon_b_frame(b_buf: &mut NAVideoBuffer<u8>, bck_buf: &NAVideoBuffer<u8>, fwd_buf: &NAVideoBuffer<u8>, | |
316 | mb_w: usize, mb_h: usize, b_data: &Vec<BMB>) { | |
f2f1afb2 | 317 | let mut cbpi = CBPInfo::new(); |
21c16d5f | 318 | let mut cur_mb = 0; |
f2f1afb2 | 319 | cbpi.reset(mb_w); |
21c16d5f KS |
320 | for mb_y in 0..mb_h { |
321 | for mb_x in 0..mb_w { | |
322 | let num_mv = b_data[cur_mb].num_mv; | |
323 | let is_fwd = b_data[cur_mb].fwd; | |
f2f1afb2 KS |
324 | let cbp = b_data[cur_mb].cbp; |
325 | cbpi.set_cbp(mb_x, cbp); | |
326 | if num_mv == 1 { | |
88c58b1b | 327 | copy_blocks(b_buf, fwd_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_b[0]); |
21c16d5f | 328 | if !is_fwd { |
88c58b1b | 329 | avg_blocks(b_buf, bck_buf, mb_x * 16, mb_y * 16, 16, 16, b_data[cur_mb].mv_f[0]); |
21c16d5f KS |
330 | } |
331 | } else { | |
332 | for blk_no in 0..4 { | |
333 | let xpos = mb_x * 16 + (blk_no & 1) * 8; | |
334 | let ypos = mb_y * 16 + (blk_no & 2) * 4; | |
88c58b1b | 335 | copy_blocks(b_buf, fwd_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_b[blk_no]); |
21c16d5f | 336 | if !is_fwd { |
88c58b1b | 337 | avg_blocks(b_buf, bck_buf, xpos, ypos, 8, 8, b_data[cur_mb].mv_f[blk_no]); |
21c16d5f KS |
338 | } |
339 | } | |
340 | } | |
f2f1afb2 | 341 | if cbp != 0 { |
21c16d5f KS |
342 | blockdsp::add_blocks(b_buf, mb_x, mb_y, &b_data[cur_mb].blk); |
343 | } | |
344 | cur_mb += 1; | |
cf64af13 | 345 | } |
f2f1afb2 | 346 | cbpi.update_row(); |
cf64af13 KS |
347 | } |
348 | } |