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1 | use nihav_core::codecs::*; | |
2 | use nihav_core::io::bitreader::*; | |
3 | ||
4 | use super::*; | |
5 | use super::dispatch::*; | |
6 | ||
7 | const AVG_BUF_VINFO: NAVideoInfo = NAVideoInfo { width: 32, height: 32, flipped: false, format: YUV420_FORMAT, bits: 12 }; | |
8 | ||
9 | pub struct FrameDecoder { | |
10 | pub slices: Vec<(SliceHeader, usize, SliceRefs, Vec<u8>)>, | |
11 | pub cur_pic: PictureInfo, | |
12 | sps: Arc<SeqParameterSet>, | |
13 | pps: Arc<PicParameterSet>, | |
14 | pub num_mbs: usize, | |
15 | mc_dsp: H264MC, | |
16 | dispatch: Shareable<ThreadDispatcher>, | |
17 | sstate: SliceState, | |
18 | cavlc_cb: Arc<CAVLCTables>, | |
19 | ipcm_buf: [u8; 256 + 64 + 64], | |
20 | is_mbaff: bool, | |
21 | deblock_skip: bool, | |
22 | } | |
23 | ||
24 | impl FrameDecoder { | |
25 | pub fn decode_slice(&mut self, hdr: &SliceHeader, hdr_size: usize, refs: &SliceRefs, nal: &[u8]) -> DecoderResult<usize> { | |
26 | self.sstate.reset(self.sps.pic_width_in_mbs, self.sps.pic_height_in_mbs, hdr.first_mb_in_slice); | |
27 | ||
28 | let mut full_size = nal.len() * 8; | |
29 | for &byte in nal.iter().rev() { | |
30 | if byte == 0 { | |
31 | full_size -= 8; | |
32 | } else { | |
33 | full_size -= (byte.trailing_zeros() + 1) as usize; | |
34 | break; | |
35 | } | |
36 | } | |
37 | validate!(full_size > 0); | |
38 | ||
39 | let mut br = BitReader::new(&nal[hdr_size / 8..], BitReaderMode::BE); | |
40 | if !self.pps.entropy_coding_mode { | |
41 | br.skip((hdr_size & 7) as u32)?; | |
42 | self.decode_slice_cavlc(&mut br, full_size - (hdr_size & !7), hdr, refs) | |
43 | } else { | |
44 | let csrc = &nal[(hdr_size + 7) / 8..]; | |
45 | validate!(csrc.len() >= 2); | |
46 | let mut cabac = CABAC::new(csrc, hdr.slice_type, hdr.slice_qp, hdr.cabac_init_idc as usize)?; | |
47 | self.decode_slice_cabac(&mut cabac, hdr, refs) | |
48 | } | |
49 | } | |
50 | fn decode_slice_cavlc(&mut self, br: &mut BitReader, full_size: usize, slice_hdr: &SliceHeader, refs: &SliceRefs) -> DecoderResult<usize> { | |
51 | const INTRA_CBP: [u8; 48] = [ | |
52 | 47, 31, 15, 0, 23, 27, 29, 30, 7, 11, 13, 14, 39, 43, 45, 46, | |
53 | 16, 3, 5, 10, 12, 19, 21, 26, 28, 35, 37, 42, 44, 1, 2, 4, | |
54 | 8, 17, 18, 20, 24, 6, 9, 22, 25, 32, 33, 34, 36, 40, 38, 41 | |
55 | ]; | |
56 | const INTER_CBP: [u8; 48] = [ | |
57 | 0, 16, 1, 2, 4, 8, 32, 3, 5, 10, 12, 15, 47, 7, 11, 13, | |
58 | 14, 6, 9, 31, 35, 37, 42, 44, 33, 34, 36, 40, 39, 43, 45, 46, | |
59 | 17, 18, 20, 24, 19, 21, 26, 28, 23, 27, 29, 30, 22, 25, 38, 41 | |
60 | ]; | |
61 | ||
62 | let mut mb_idx = slice_hdr.first_mb_in_slice; | |
63 | let mut mb_info = CurrentMBInfo { qp_y: slice_hdr.slice_qp, ..Default::default() }; | |
64 | let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip }; | |
65 | while br.tell() < full_size && mb_idx < self.num_mbs { | |
66 | mb_info.coded = [false; 25]; | |
67 | mb_info.ref_l0 = [ZERO_REF; 4]; | |
68 | mb_info.ref_l1 = [ZERO_REF; 4]; | |
69 | mb_info.mv_l0 = [ZERO_MV; 16]; | |
70 | mb_info.mv_l1 = [ZERO_MV; 16]; | |
71 | mb_info.chroma_dc = [[0; 4]; 2]; | |
72 | mb_info.cbpy = 0; | |
73 | mb_info.cbpc = 0; | |
74 | ||
75 | if !slice_hdr.slice_type.is_intra() { | |
76 | let mb_skip_run = br.read_ue()? as usize; | |
77 | validate!(mb_idx + mb_skip_run <= self.num_mbs); | |
78 | mb_info.mb_type = skip_type; | |
79 | for _ in 0..mb_skip_run { | |
80 | self.handle_macroblock(slice_hdr, &mut mb_info, refs)?; | |
81 | mb_idx += 1; | |
82 | } | |
83 | if mb_idx == self.num_mbs || br.tell() >= full_size { | |
84 | break; | |
85 | } | |
86 | } | |
87 | if br.tell() < full_size { | |
88 | if self.is_mbaff && ((mb_idx & 1) == 0) { | |
89 | let _mb_field_decoding = br.read_bool()?; | |
90 | } | |
91 | let mut mb_type = decode_mb_type_cavlc(br, slice_hdr)?; | |
92 | mb_info.mb_type = mb_type; | |
93 | mb_info.transform_size_8x8 = false; | |
94 | if mb_type == MBType::PCM { | |
95 | br.align(); | |
96 | for pix in self.ipcm_buf[..256 + 64 + 64].iter_mut() { | |
97 | *pix = br.read(8)? as u8; | |
98 | } | |
99 | self.sstate.fill_ncoded(16); | |
100 | } else { | |
101 | if self.pps.transform_8x8_mode && mb_type == MBType::Intra4x4 { | |
102 | mb_info.transform_size_8x8 = br.read_bool()?; | |
103 | if mb_info.transform_size_8x8 { | |
104 | mb_type = MBType::Intra8x8; | |
105 | mb_info.mb_type = MBType::Intra8x8; | |
106 | } | |
107 | } | |
108 | decode_mb_pred_cavlc(br, slice_hdr, mb_type, &mut self.sstate, &mut mb_info)?; | |
109 | let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type { | |
110 | (cbpy, cbpc) | |
111 | } else { | |
112 | let cbp_id = br.read_ue()? as usize; | |
113 | validate!(cbp_id < INTRA_CBP.len()); | |
114 | let cbp = if mb_type == MBType::Intra4x4 || mb_type == MBType::Intra8x8 { | |
115 | INTRA_CBP[cbp_id] | |
116 | } else { | |
117 | INTER_CBP[cbp_id] | |
118 | }; | |
119 | if self.pps.transform_8x8_mode && (cbp & 0xF) != 0 && mb_info.can_have_8x8_tx(self.sps.direct_8x8_inference) { | |
120 | mb_info.transform_size_8x8 = br.read_bool()?; | |
121 | } | |
122 | ((cbp & 0xF), (cbp >> 4)) | |
123 | }; | |
124 | mb_info.cbpy = cbpy; | |
125 | mb_info.cbpc = cbpc; | |
126 | self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy; | |
127 | if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() { | |
128 | let mb_qp_delta = br.read_se()?; | |
129 | validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25); | |
130 | let new_qp = mb_qp_delta + i32::from(mb_info.qp_y); | |
131 | mb_info.qp_y = if new_qp < 0 { | |
132 | (new_qp + 52) as u8 | |
133 | } else if new_qp >= 52 { | |
134 | (new_qp - 52) as u8 | |
135 | } else { | |
136 | new_qp as u8 | |
137 | }; | |
138 | mb_info.coeffs = [[0; 16]; 25]; | |
139 | if self.pps.transform_8x8_mode { | |
140 | mb_info.clear_coeffs8x8(); | |
141 | } | |
142 | mb_info.chroma_dc = [[0; 4]; 2]; | |
143 | decode_residual_cavlc(br, &mut self.sstate, &mut mb_info, &self.cavlc_cb)?; | |
144 | } | |
145 | } | |
146 | self.handle_macroblock(slice_hdr, &mut mb_info, refs)?; | |
147 | } | |
148 | mb_idx += 1; | |
149 | if let Ok(disp) = self.dispatch.read() { | |
150 | disp.update_pos(self.cur_pic.full_id, mb_idx); | |
151 | } | |
152 | } | |
153 | Ok(mb_idx) | |
154 | } | |
155 | fn decode_slice_cabac(&mut self, cabac: &mut CABAC, slice_hdr: &SliceHeader, refs: &SliceRefs) -> DecoderResult<usize> { | |
156 | let mut mb_idx = slice_hdr.first_mb_in_slice; | |
157 | let mut prev_mb_skipped = false; | |
158 | let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip }; | |
159 | let mut last_qp_diff = false; | |
160 | ||
161 | let mut mb_info = CurrentMBInfo { qp_y: slice_hdr.slice_qp, ..Default::default() }; | |
162 | ||
163 | while mb_idx < self.num_mbs { | |
164 | mb_info.coded = [false; 25]; | |
165 | mb_info.ref_l0 = [ZERO_REF; 4]; | |
166 | mb_info.ref_l1 = [ZERO_REF; 4]; | |
167 | mb_info.mv_l0 = [ZERO_MV; 16]; | |
168 | mb_info.mv_l1 = [ZERO_MV; 16]; | |
169 | mb_info.chroma_dc = [[0; 4]; 2]; | |
170 | mb_info.cbpy = 0; | |
171 | mb_info.cbpc = 0; | |
172 | let mb_skip = cabac_decode_mbskip(cabac, &self.sstate, slice_hdr); | |
173 | if !mb_skip { | |
174 | if self.is_mbaff && (((mb_idx & 1) == 0) || (prev_mb_skipped && ((mb_idx & 1) == 1))) { | |
175 | let _mb_field_decoding = cabac.decode_bit(70); | |
176 | } | |
177 | let mut mb_type = cabac_decode_mb_type(cabac, slice_hdr, &self.sstate); | |
178 | mb_info.mb_type = mb_type; | |
179 | mb_info.transform_size_8x8 = false; | |
180 | if mb_type == MBType::PCM { | |
181 | let ipcm_size = 256 + 64 + 64; | |
182 | validate!(cabac.pos + ipcm_size <= cabac.src.len()); | |
183 | self.ipcm_buf[..ipcm_size].copy_from_slice(&cabac.src[cabac.pos..][..ipcm_size]); | |
184 | cabac.pos += ipcm_size; | |
185 | cabac.reinit()?; | |
186 | last_qp_diff = false; | |
187 | } else { | |
188 | if self.pps.transform_8x8_mode && mb_type == MBType::Intra4x4 { | |
189 | let mut ctx = 0; | |
190 | if self.sstate.get_top_mb().transform_8x8 { | |
191 | ctx += 1; | |
192 | } | |
193 | if self.sstate.get_left_mb().transform_8x8 { | |
194 | ctx += 1; | |
195 | } | |
196 | mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx); | |
197 | if mb_info.transform_size_8x8 { | |
198 | mb_type = MBType::Intra8x8; | |
199 | mb_info.mb_type = MBType::Intra8x8; | |
200 | } | |
201 | } | |
202 | decode_mb_pred_cabac(cabac, slice_hdr, mb_type, &mut self.sstate, &mut mb_info); | |
203 | let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type { | |
204 | (cbpy, cbpc) | |
205 | } else { | |
206 | decode_cbp_cabac(cabac, &self.sstate) | |
207 | }; | |
208 | if self.pps.transform_8x8_mode && cbpy != 0 && mb_info.can_have_8x8_tx(self.sps.direct_8x8_inference) { | |
209 | let mut ctx = 0; | |
210 | if self.sstate.get_top_mb().transform_8x8 { | |
211 | ctx += 1; | |
212 | } | |
213 | if self.sstate.get_left_mb().transform_8x8 { | |
214 | ctx += 1; | |
215 | } | |
216 | mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx); | |
217 | } | |
218 | if mb_type.is_intra() { | |
219 | self.sstate.get_cur_mb().cmode = mb_info.chroma_ipred; | |
220 | } | |
221 | mb_info.cbpy = cbpy; | |
222 | mb_info.cbpc = cbpc; | |
223 | self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy; | |
224 | if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() { | |
225 | let mb_qp_delta = decode_mb_qp_delta_cabac(cabac, last_qp_diff as usize); | |
226 | validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25); | |
227 | last_qp_diff = mb_qp_delta != 0; | |
228 | let new_qp = mb_qp_delta + i32::from(mb_info.qp_y); | |
229 | mb_info.qp_y = if new_qp < 0 { | |
230 | (new_qp + 52) as u8 | |
231 | } else if new_qp >= 52 { | |
232 | (new_qp - 52) as u8 | |
233 | } else { | |
234 | new_qp as u8 | |
235 | }; | |
236 | mb_info.coeffs = [[0; 16]; 25]; | |
237 | if self.pps.transform_8x8_mode { | |
238 | mb_info.clear_coeffs8x8(); | |
239 | } | |
240 | mb_info.chroma_dc = [[0; 4]; 2]; | |
241 | decode_residual_cabac(cabac, &mut self.sstate, &mut mb_info); | |
242 | } else { | |
243 | last_qp_diff = false; | |
244 | } | |
245 | } | |
246 | } else { | |
247 | mb_info.mb_type = skip_type; | |
248 | mb_info.transform_size_8x8 = false; | |
249 | last_qp_diff = false; | |
250 | } | |
251 | self.handle_macroblock(slice_hdr, &mut mb_info, refs)?; | |
252 | prev_mb_skipped = mb_skip; | |
253 | if !(self.is_mbaff && ((mb_idx & 1) == 0)) && cabac.decode_terminate() { | |
254 | if let Ok(disp) = self.dispatch.read() { | |
255 | disp.update_pos(self.cur_pic.full_id, mb_idx + 1); | |
256 | } | |
257 | return Ok(mb_idx + 1); | |
258 | } | |
259 | mb_idx += 1; | |
260 | if let Ok(disp) = self.dispatch.read() { | |
261 | disp.update_pos(self.cur_pic.full_id, mb_idx); | |
262 | } | |
263 | } | |
264 | Err(DecoderError::InvalidData) | |
265 | } | |
266 | #[allow(clippy::cognitive_complexity)] | |
267 | fn handle_macroblock(&mut self, slice_hdr: &SliceHeader, mb_info: &mut CurrentMBInfo, refs: &SliceRefs) -> DecoderResult<()> { | |
268 | let qp_y = mb_info.qp_y; | |
269 | let qpr = ((qp_y as i8) + self.pps.chroma_qp_index_offset).max(0).min(51) as usize; | |
270 | let qp_u = CHROMA_QUANTS[qpr]; | |
271 | let qpb = ((qp_y as i8) + self.pps.second_chroma_qp_index_offset).max(0).min(51) as usize; | |
272 | let qp_v = CHROMA_QUANTS[qpb]; | |
273 | ||
274 | let tx_bypass = qp_y == 0 && self.sps.qpprime_y_zero_transform_bypass; | |
275 | ||
276 | self.sstate.get_cur_mb().mb_type = mb_info.mb_type.into(); | |
277 | if mb_info.mb_type != MBType::PCM { | |
278 | self.sstate.get_cur_mb().qp_y = qp_y; | |
279 | self.sstate.get_cur_mb().qp_u = qp_u; | |
280 | self.sstate.get_cur_mb().qp_v = qp_v; | |
281 | self.sstate.get_cur_mb().transform_8x8 = mb_info.transform_size_8x8; | |
282 | } | |
283 | let has_dc = mb_info.mb_type.is_intra16x16() && mb_info.coded[24]; | |
284 | if has_dc { | |
285 | idct_luma_dc(&mut mb_info.coeffs[24], qp_y); | |
286 | for i in 0..16 { | |
287 | mb_info.coeffs[i][0] = mb_info.coeffs[24][i]; | |
288 | } | |
289 | } | |
290 | if !mb_info.transform_size_8x8 { | |
291 | let quant_dc = !mb_info.mb_type.is_intra16x16(); | |
292 | for i in 0..16 { | |
293 | if mb_info.coded[i] { | |
294 | if !tx_bypass { | |
295 | idct(&mut mb_info.coeffs[i], qp_y, quant_dc); | |
296 | } | |
297 | } else if has_dc { | |
298 | if !tx_bypass { | |
299 | idct_dc(&mut mb_info.coeffs[i], qp_y, quant_dc); | |
300 | } | |
301 | mb_info.coded[i] = true; | |
302 | } | |
303 | } | |
304 | } else { | |
305 | for i in 0..4 { | |
306 | if mb_info.coded[(i & 1) * 2 + (i & 2) * 4] && !tx_bypass { | |
307 | dequant8x8(&mut mb_info.coeffs8x8[i].coeffs, &self.pps.scaling_list_8x8[!mb_info.mb_type.is_intra() as usize]); | |
308 | idct8x8(&mut mb_info.coeffs8x8[i].coeffs, qp_y); | |
309 | } | |
310 | } | |
311 | } | |
312 | for chroma in 0..2 { | |
313 | let qp_c = if chroma == 0 { qp_u } else { qp_v }; | |
314 | if mb_info.cbpc != 0 { | |
315 | chroma_dc_transform(&mut mb_info.chroma_dc[chroma], qp_c); | |
316 | } | |
317 | for i in 0..4 { | |
318 | let blk_no = 16 + chroma * 4 + i; | |
319 | mb_info.coeffs[blk_no][0] = mb_info.chroma_dc[chroma][i]; | |
320 | if mb_info.coded[blk_no] { | |
321 | idct(&mut mb_info.coeffs[blk_no], qp_c, false); | |
322 | } else if mb_info.coeffs[blk_no][0] != 0 { | |
323 | idct_dc(&mut mb_info.coeffs[blk_no], qp_c, false); | |
324 | mb_info.coded[blk_no] = true; | |
325 | } | |
326 | } | |
327 | } | |
328 | if !self.pps.entropy_coding_mode || mb_info.mb_type.is_skip() || mb_info.mb_type.is_intra() { | |
329 | self.sstate.reset_mb_mv(); | |
330 | } | |
331 | if !mb_info.mb_type.is_intra() { | |
332 | let temporal_mv = !slice_hdr.direct_spatial_mv_pred; | |
333 | let cur_id = self.cur_pic.full_id as u16; | |
334 | // wait for the reference macroblock MV to be available | |
335 | if matches!(mb_info.mb_type, MBType::Direct | MBType::BSkip | MBType::B8x8) { | |
336 | if let Some(ref_id) = refs.get_ref_id(0, mb_info.ref_l1[0].index()) { | |
337 | wait_for_mb(&self.dispatch, &self.sstate, self.sstate.mb_x * 16, self.sstate.mb_y * 16, ZERO_MV, ref_id)?; | |
338 | } | |
339 | } | |
340 | Self::pred_mv(&mut self.sstate, refs, mb_info, cur_id, temporal_mv, self.sps.direct_8x8_inference); | |
341 | } | |
342 | if !self.pps.constrained_intra_pred && mb_info.mb_type != MBType::Intra4x4 && mb_info.mb_type != MBType::Intra8x8 { | |
343 | self.sstate.fill_ipred(IntraPredMode::DC); | |
344 | } | |
345 | ||
346 | let xpos = self.sstate.mb_x * 16; | |
347 | let ypos = self.sstate.mb_y * 16; | |
348 | let mut frm = NASimpleVideoFrame::from_video_buf(&mut self.cur_pic.buf).unwrap(); | |
349 | if mb_info.mb_type != MBType::PCM { | |
350 | let weight_mode = if self.pps.weighted_pred && slice_hdr.slice_type.is_p() { | |
351 | 1 | |
352 | } else if slice_hdr.slice_type.is_b() { | |
353 | self.pps.weighted_bipred_idc | |
354 | } else { | |
355 | 0 | |
356 | }; | |
357 | recon_mb_mt(&mut frm, slice_hdr, mb_info, &mut self.sstate, refs, &mut self.mc_dsp, weight_mode, &self.dispatch)?; | |
358 | } else { | |
359 | for (dline, src) in frm.data[frm.offset[0] + xpos + ypos * frm.stride[0]..].chunks_mut(frm.stride[0]).take(16).zip(self.ipcm_buf.chunks(16)) { | |
360 | dline[..16].copy_from_slice(src); | |
361 | } | |
362 | for (dline, src) in frm.data[frm.offset[1] + xpos/2 + ypos/2 * frm.stride[1]..].chunks_mut(frm.stride[1]).take(8).zip(self.ipcm_buf[256..].chunks(8)) { | |
363 | dline[..8].copy_from_slice(src); | |
364 | } | |
365 | for (dline, src) in frm.data[frm.offset[2] + xpos/2 + ypos/2 * frm.stride[2]..].chunks_mut(frm.stride[2]).take(8).zip(self.ipcm_buf[256 + 64..].chunks(8)) { | |
366 | dline[..8].copy_from_slice(src); | |
367 | } | |
368 | } | |
369 | self.sstate.save_ipred_context(&frm); | |
370 | ||
371 | let mv_info = &mut self.cur_pic.mv_info; | |
372 | let mb_pos = self.sstate.mb_x + self.sstate.mb_y * mv_info.mb_stride; | |
373 | let mut mb = FrameMBInfo::new(); | |
374 | mb.mb_type = mb_info.mb_type.into(); | |
375 | for blk4 in 0..16 { | |
376 | mb.mv[blk4] = self.sstate.get_cur_blk4(blk4).mv; | |
377 | } | |
378 | for blk8 in 0..4 { | |
379 | mb.ref_poc[blk8] = refs.map_refs(self.sstate.get_cur_blk8(blk8).ref_idx); | |
380 | mb.ref_idx[blk8] = self.sstate.get_cur_blk8(blk8).ref_idx; | |
381 | } | |
382 | mv_info.mbs[mb_pos] = mb; | |
383 | ||
384 | let deblock_mode = slice_hdr.disable_deblocking_filter_idc; | |
385 | if !self.deblock_skip && deblock_mode != 1 { | |
386 | let is_s = slice_hdr.slice_type == SliceType::SI || slice_hdr.slice_type == SliceType::SP; | |
387 | self.sstate.fill_deblock(refs, deblock_mode, is_s); | |
388 | let mut frm = NASimpleVideoFrame::from_video_buf(&mut self.cur_pic.buf).unwrap(); | |
389 | let lf_alpha = slice_hdr.slice_alpha_c0_offset; | |
390 | let lf_beta = slice_hdr.slice_beta_offset; | |
391 | loop_filter_mb(&mut frm, &self.sstate, lf_alpha, lf_beta); | |
392 | } | |
393 | self.sstate.next_mb(); | |
394 | Ok(()) | |
395 | } | |
396 | ||
397 | fn pred_mv(sstate: &mut SliceState, frame_refs: &SliceRefs, mb_info: &mut CurrentMBInfo, cur_id: u16, temporal_mv: bool, direct_8x8: bool) { | |
398 | let mb_type = mb_info.mb_type; | |
399 | if !mb_type.is_4x4() { | |
400 | let (pw, ph) = mb_type.size(); | |
401 | let mut xoff = 0; | |
402 | let mut yoff = 0; | |
403 | if mb_type == MBType::Direct || mb_type == MBType::BSkip { | |
404 | sstate.predict_direct_mb(frame_refs, temporal_mv, direct_8x8, cur_id); | |
405 | } | |
406 | for part in 0..mb_type.num_parts() { | |
407 | if !mb_type.is_l1(part) { | |
408 | match mb_type { | |
409 | MBType::PSkip => sstate.predict_pskip(), | |
410 | MBType::BSkip | MBType::Direct => { | |
411 | }, | |
412 | _ => { | |
413 | sstate.predict(xoff, yoff, pw, ph, 0, | |
414 | mb_info.mv_l0[part], mb_info.ref_l0[part]); | |
415 | }, | |
416 | }; | |
417 | } | |
418 | if !mb_type.is_l0(part) && mb_type != MBType::BSkip && mb_type != MBType::Direct { | |
419 | sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part], mb_info.ref_l1[part]); | |
420 | } | |
421 | if pw != 16 { | |
422 | xoff += pw; | |
423 | } else { | |
424 | yoff += ph; | |
425 | } | |
426 | } | |
427 | } else { | |
428 | for part in 0..4 { | |
429 | let sub_type = mb_info.sub_mb_type[part]; | |
430 | let mut xoff = (part & 1) * 8; | |
431 | let mut yoff = (part & 2) * 4; | |
432 | let orig_x = xoff; | |
433 | let (pw, ph) = sub_type.size(); | |
434 | for subpart in 0..sub_type.num_parts() { | |
435 | if sub_type != SubMBType::Direct8x8 { | |
436 | if !sub_type.is_l1() { | |
437 | sstate.predict(xoff, yoff, pw, ph, 0, mb_info.mv_l0[part * 4 + subpart], mb_info.ref_l0[part]); | |
438 | } | |
439 | if !sub_type.is_l0() { | |
440 | sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part * 4 + subpart], mb_info.ref_l1[part]); | |
441 | } | |
442 | } else { | |
443 | for sblk in 0..4 { | |
444 | sstate.predict_direct_sub(frame_refs, temporal_mv, direct_8x8, cur_id, (xoff / 4) + (sblk & 1) + (yoff / 4) * 4 + (sblk & 2) * 2); | |
445 | } | |
446 | } | |
447 | xoff += pw; | |
448 | if xoff == orig_x + 8 { | |
449 | xoff -= 8; | |
450 | yoff += ph; | |
451 | } | |
452 | } | |
453 | } | |
454 | } | |
455 | } | |
456 | } | |
457 | ||
458 | struct H264MTDecoder { | |
459 | info: NACodecInfoRef, | |
460 | nal_len: u8, | |
461 | dispatch: Shareable<ThreadDispatcher>, | |
462 | frame_refs: FrameRefs, | |
463 | skip_mode: FrameSkipMode, | |
464 | sps: Vec<Arc<SeqParameterSet>>, | |
465 | cur_sps: usize, | |
466 | pps: Vec<Arc<PicParameterSet>>, | |
467 | cur_pps: usize, | |
468 | cur_fdec: Option<FrameDecoder>, | |
469 | cavlc_cb: Arc<CAVLCTables>, | |
470 | deblock_skip: bool, | |
471 | max_last_poc: u32, | |
472 | poc_base: u32, | |
473 | avg_pool: NAVideoBufferPool<u8>, | |
474 | } | |
475 | ||
476 | impl H264MTDecoder { | |
477 | fn new() -> Self { | |
478 | Self { | |
479 | info: NACodecInfoRef::default(), | |
480 | nal_len: 0, | |
481 | dispatch: Arc::new(RwLock::new(ThreadDispatcher::new())), | |
482 | frame_refs: FrameRefs::new(), | |
483 | skip_mode: FrameSkipMode::default(), | |
484 | sps: Vec::new(), | |
485 | cur_sps: 0, | |
486 | pps: Vec::new(), | |
487 | cur_pps: 0, | |
488 | cur_fdec: None, | |
489 | cavlc_cb: Arc::new(CAVLCTables::new()), | |
490 | deblock_skip: false, | |
491 | max_last_poc: 0, | |
492 | poc_base: 0, | |
493 | avg_pool: NAVideoBufferPool::new(8), | |
494 | } | |
495 | } | |
496 | fn handle_nal(&mut self, src: Vec<u8>, supp: &mut NADecoderSupport, skip_decoding: bool, user_id: u32, time: NATimeInfo) -> DecoderResult<()> { | |
497 | validate!(!src.is_empty()); | |
498 | validate!((src[0] & 0x80) == 0); | |
499 | let nal_ref_idc = src[0] >> 5; | |
500 | let nal_unit_type = src[0] & 0x1F; | |
501 | ||
502 | let mut full_size = src.len() * 8; | |
503 | for &byte in src.iter().rev() { | |
504 | if byte == 0 { | |
505 | full_size -= 8; | |
506 | } else { | |
507 | full_size -= (byte.trailing_zeros() + 1) as usize; | |
508 | break; | |
509 | } | |
510 | } | |
511 | validate!(full_size > 0); | |
512 | match nal_unit_type { | |
513 | 1 | 5 if !skip_decoding => { | |
514 | let is_idr = nal_unit_type == 5; | |
515 | let mut br = BitReader::new(&src[..(full_size + 7)/8], BitReaderMode::BE); | |
516 | br.skip(8)?; | |
517 | ||
518 | let slice_hdr = parse_slice_header(&mut br, self.sps.as_slice(), self.pps.as_slice(), is_idr, nal_ref_idc)?; | |
519 | let hdr_size = br.tell(); | |
520 | validate!(br.tell() < full_size); | |
521 | let full_id; | |
522 | if slice_hdr.first_mb_in_slice == 0 { | |
523 | validate!(self.cur_fdec.is_none()); | |
524 | for (i, pps) in self.pps.iter().enumerate() { | |
525 | if pps.pic_parameter_set_id == slice_hdr.pic_parameter_set_id { | |
526 | self.cur_pps = i; | |
527 | break; | |
528 | } | |
529 | } | |
530 | for (i, sps) in self.sps.iter().enumerate() { | |
531 | if sps.seq_parameter_set_id == self.pps[self.cur_pps].seq_parameter_set_id { | |
532 | self.cur_sps = i; | |
533 | break; | |
534 | } | |
535 | } | |
536 | ||
537 | let mut cur_full_id = self.frame_refs.calc_picture_num(&slice_hdr, is_idr, nal_ref_idc, &self.sps[self.cur_sps]) + self.poc_base; | |
538 | if is_idr { | |
539 | if cur_full_id <= self.max_last_poc { | |
540 | self.poc_base = self.max_last_poc + 2 - (cur_full_id - self.poc_base); | |
541 | cur_full_id = self.max_last_poc + 2; | |
542 | } | |
543 | } | |
544 | self.max_last_poc = self.max_last_poc.max(cur_full_id); | |
545 | full_id = cur_full_id; | |
546 | ||
547 | let sps = &self.sps[self.cur_sps]; | |
548 | if sps.chroma_format_idc != 1 || sps.bit_depth_luma != 8 || sps.bit_depth_chroma != 8 { | |
549 | println!(" chroma fmt {} bits {}/{}", sps.chroma_format_idc, sps.bit_depth_luma, sps.bit_depth_chroma); | |
550 | return Err(DecoderError::NotImplemented); | |
551 | } | |
552 | ||
553 | if is_idr { | |
554 | self.frame_refs.clear_refs(); | |
555 | } | |
556 | ||
557 | let width = sps.pic_width_in_mbs << 4; | |
558 | let height = sps.pic_height_in_mbs << 4; | |
559 | let num_mbs = sps.pic_width_in_mbs * sps.pic_height_in_mbs; | |
560 | ||
561 | let avg_buf = if let Some(buf) = self.avg_pool.get_free() { | |
562 | buf | |
563 | } else { | |
564 | let new_avg_buf = alloc_video_buffer(AVG_BUF_VINFO, 4).unwrap().get_vbuf().unwrap(); | |
565 | self.avg_pool.add_frame(new_avg_buf.clone()); | |
566 | new_avg_buf | |
567 | }; | |
568 | let mut mc_dsp = H264MC::new(avg_buf); | |
569 | mc_dsp.set_dimensions(width, height); | |
570 | ||
571 | let is_mbaff = sps.mb_adaptive_frame_field && !slice_hdr.field_pic; | |
572 | if is_mbaff { | |
573 | println!("MBAFF"); | |
574 | return Err(DecoderError::NotImplemented); | |
575 | } | |
576 | if !sps.frame_mbs_only { | |
577 | println!("PAFF?"); | |
578 | return Err(DecoderError::NotImplemented); | |
579 | } | |
580 | ||
581 | let cur_vinfo = supp.pool_u8.get_info(); | |
582 | let tmp_vinfo = NAVideoInfo::new(width, height, false, YUV420_FORMAT); | |
583 | if cur_vinfo != Some(tmp_vinfo) { | |
584 | supp.pool_u8.reset(); | |
585 | supp.pool_u8.prealloc_video(tmp_vinfo, 4)?; | |
586 | } | |
587 | ||
588 | let buf = if let Some(pic) = supp.pool_u8.get_free() { | |
589 | pic | |
590 | } else { | |
591 | if supp.pool_u8.get_num_used() > 256 { | |
592 | return Err(DecoderError::AllocError); | |
593 | } | |
594 | if let Ok(nbuf) = alloc_video_buffer(tmp_vinfo, 4) { | |
595 | let vbuf = nbuf.get_vbuf().unwrap(); | |
596 | supp.pool_u8.add_frame(vbuf.clone()); | |
597 | vbuf | |
598 | } else { | |
599 | return Err(DecoderError::AllocError); | |
600 | } | |
601 | }; | |
602 | ||
603 | let cur_pic = PictureInfo { | |
604 | id: slice_hdr.frame_num, | |
605 | full_id, user_id, time, | |
606 | pic_type: slice_hdr.slice_type.to_frame_type(), | |
607 | buf, | |
608 | cur_mb: 0, | |
609 | is_ref: nal_ref_idc != 0, | |
610 | is_idr, | |
611 | long_term: get_long_term_id(is_idr, &slice_hdr), | |
612 | mv_info: NABufferRef::new(FrameMV::new(sps.pic_width_in_mbs, sps.pic_height_in_mbs)), | |
613 | }; | |
614 | ||
615 | self.cur_fdec = Some(FrameDecoder{ | |
616 | slices: Vec::new(), | |
617 | sstate: SliceState::new(), | |
618 | ipcm_buf: [0; 256 + 64 + 64], | |
619 | //width, height, | |
620 | num_mbs, | |
621 | sps: Arc::clone(sps), | |
622 | pps: Arc::clone(&self.pps[self.cur_pps]), | |
623 | dispatch: Arc::clone(&self.dispatch), | |
624 | cavlc_cb: Arc::clone(&self.cavlc_cb), | |
625 | mc_dsp, | |
626 | cur_pic, | |
627 | is_mbaff, | |
628 | deblock_skip: self.deblock_skip, | |
629 | }); | |
630 | } else { | |
631 | if let Some(ref mut fdec) = self.cur_fdec { | |
632 | let new_type = slice_hdr.slice_type.to_frame_type(); | |
633 | let pic = &mut fdec.cur_pic; | |
634 | pic.pic_type = match (pic.pic_type, new_type) { | |
635 | (FrameType::I, _) => new_type, | |
636 | (_, FrameType::B) => FrameType::B, | |
637 | _ => pic.pic_type, | |
638 | }; | |
639 | full_id = pic.full_id; | |
640 | } else { | |
641 | return Ok(()); | |
642 | } | |
643 | } | |
644 | ||
645 | let sps = &self.sps[self.cur_sps]; | |
646 | ||
647 | self.frame_refs.select_refs(sps, &slice_hdr, full_id); | |
648 | ||
649 | if slice_hdr.adaptive_ref_pic_marking_mode { | |
650 | self.frame_refs.apply_adaptive_marking(&slice_hdr.adaptive_ref_pic_marking, slice_hdr.frame_num, 1 << self.sps[self.cur_sps].log2_max_frame_num)?; | |
651 | } | |
652 | if let Some(ref mut fdec) = self.cur_fdec { | |
653 | fdec.slices.push((slice_hdr, hdr_size, self.frame_refs.cur_refs.clone(), src)); | |
654 | } | |
655 | }, | |
656 | 2 => { // slice data partition A | |
657 | //slice header | |
658 | //slice id = read_ue() | |
659 | //cat 2 slice data (all but MB layer residual) | |
660 | return Err(DecoderError::NotImplemented); | |
661 | }, | |
662 | 3 => { // slice data partition B | |
663 | //slice id = read_ue() | |
664 | //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() } | |
665 | //cat 3 slice data (MB layer residual) | |
666 | return Err(DecoderError::NotImplemented); | |
667 | }, | |
668 | 4 => { // slice data partition C | |
669 | //slice id = read_ue() | |
670 | //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() } | |
671 | //cat 4 slice data (MB layer residual) | |
672 | return Err(DecoderError::NotImplemented); | |
673 | }, | |
674 | 6 => {}, //SEI | |
675 | 7 => { | |
676 | let sps = parse_sps(&src[1..])?; | |
677 | self.sps.push(Arc::new(sps)); | |
678 | }, | |
679 | 8 => { | |
680 | validate!(full_size >= 8 + 16); | |
681 | let pps = parse_pps(&src[1..], self.sps.as_slice(), full_size - 8)?; | |
682 | let mut found = false; | |
683 | for stored_pps in self.pps.iter_mut() { | |
684 | if stored_pps.pic_parameter_set_id == pps.pic_parameter_set_id { | |
685 | *stored_pps = Arc::clone(&pps); | |
686 | found = true; | |
687 | break; | |
688 | } | |
689 | } | |
690 | if !found { | |
691 | self.pps.push(pps); | |
692 | } | |
693 | }, | |
694 | 9 => { // access unit delimiter | |
695 | }, | |
696 | 10 => {}, //end of sequence | |
697 | 11 => {}, //end of stream | |
698 | 12 => {}, //filler | |
699 | _ => {}, | |
700 | }; | |
701 | ||
702 | Ok(()) | |
703 | } | |
704 | } | |
705 | ||
706 | impl NADecoderMT for H264MTDecoder { | |
707 | fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef, nthreads: usize) -> DecoderResult<()> { | |
708 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { | |
709 | let fmt = YUV420_FORMAT; | |
710 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, fmt)); | |
711 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); | |
712 | ||
713 | let edata = info.get_extradata().unwrap(); | |
714 | //print!("edata:"); for &el in edata.iter() { print!(" {:02X}", el); } println!(); | |
715 | if edata.len() > 11 && &edata[0..4] == b"avcC" { | |
716 | let mut mr = MemoryReader::new_read(edata.as_slice()); | |
717 | let mut br = ByteReader::new(&mut mr); | |
718 | ||
719 | br.read_skip(4)?; | |
720 | let version = br.read_byte()?; | |
721 | validate!(version == 1); | |
722 | let profile = br.read_byte()?; | |
723 | let _compatibility = br.read_byte()?; | |
724 | let _level = br.read_byte()?; | |
725 | let b = br.read_byte()?; | |
726 | validate!((b & 0xFC) == 0xFC); | |
727 | self.nal_len = (b & 3) + 1; | |
728 | let b = br.read_byte()?; | |
729 | validate!((b & 0xE0) == 0xE0); | |
730 | let num_sps = (b & 0x1F) as usize; | |
731 | for _ in 0..num_sps { | |
732 | let len = br.read_u16be()? as usize; | |
733 | let offset = br.tell() as usize; | |
734 | validate!((br.peek_byte()? & 0x1F) == 7); | |
735 | let mut nal_buf = Vec::new(); | |
736 | let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf); | |
737 | self.handle_nal(nal_buf, supp, true, 0, NATimeInfo::new(None, None, None, 0, 0))?; | |
738 | br.read_skip(len)?; | |
739 | } | |
740 | let num_pps = br.read_byte()? as usize; | |
741 | for _ in 0..num_pps { | |
742 | let len = br.read_u16be()? as usize; | |
743 | let offset = br.tell() as usize; | |
744 | validate!((br.peek_byte()? & 0x1F) == 8); | |
745 | let mut nal_buf = Vec::new(); | |
746 | let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf); | |
747 | self.handle_nal(nal_buf, supp, true, 0, NATimeInfo::new(None, None, None, 0, 0))?; | |
748 | br.read_skip(len)?; | |
749 | } | |
750 | if br.left() > 0 { | |
751 | match profile { | |
752 | 100 | 110 | 122 | 144 => { | |
753 | let b = br.read_byte()?; | |
754 | validate!((b & 0xFC) == 0xFC); | |
755 | // b & 3 -> chroma format | |
756 | let b = br.read_byte()?; | |
757 | validate!((b & 0xF8) == 0xF8); | |
758 | // b & 7 -> luma depth minus 8 | |
759 | let b = br.read_byte()?; | |
760 | validate!((b & 0xF8) == 0xF8); | |
761 | // b & 7 -> chroma depth minus 8 | |
762 | let num_spsext = br.read_byte()? as usize; | |
763 | for _ in 0..num_spsext { | |
764 | let len = br.read_u16be()? as usize; | |
765 | // parse spsext | |
766 | br.read_skip(len)?; | |
767 | } | |
768 | }, | |
769 | _ => {}, | |
770 | }; | |
771 | } | |
772 | } else { | |
773 | return Err(DecoderError::NotImplemented); | |
774 | } | |
775 | ||
776 | let mut width = vinfo.get_width(); | |
777 | let mut height = vinfo.get_height(); | |
778 | ||
779 | if (width == 0 || height == 0) && !self.sps.is_empty() { | |
780 | width = self.sps[0].pic_width_in_mbs * 16; | |
781 | height = self.sps[0].pic_height_in_mbs * 16; | |
782 | } | |
783 | ||
784 | let num_bufs = if !self.sps.is_empty() { | |
785 | self.sps[0].num_ref_frames + 1 | |
786 | } else { | |
787 | 3 | |
788 | }.max(16 + 1); | |
789 | if let Ok(ref mut sd) = self.dispatch.write() { | |
790 | sd.max_threads = nthreads; | |
791 | } else { | |
792 | return Err(DecoderError::Bug); | |
793 | } | |
794 | supp.pool_u8.set_dec_bufs(num_bufs + nthreads); | |
795 | supp.pool_u8.prealloc_video(NAVideoInfo::new(width, height, false, fmt), 4)?; | |
796 | ||
797 | self.avg_pool.prealloc_video(AVG_BUF_VINFO, 4)?; | |
798 | ||
799 | Ok(()) | |
800 | } else { | |
801 | Err(DecoderError::InvalidData) | |
802 | } | |
803 | } | |
804 | fn can_take_input(&mut self) -> bool { | |
805 | if let Ok(ref sd) = self.dispatch.read() { | |
806 | sd.can_decode_more() | |
807 | } else { | |
808 | false | |
809 | } | |
810 | } | |
811 | fn queue_pkt(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket, user_id: u32) -> DecoderResult<bool> { | |
812 | if !self.can_take_input() { | |
813 | return Ok(false); | |
814 | } | |
815 | ||
816 | let src = pkt.get_buffer(); | |
817 | ||
818 | let mut mr = MemoryReader::new_read(&src); | |
819 | let mut br = ByteReader::new(&mut mr); | |
820 | let mut nal_buf = Vec::with_capacity(src.len()); | |
821 | ||
822 | if self.nal_len > 0 { | |
823 | let mut skip_decoding = false; | |
824 | if self.skip_mode != FrameSkipMode::None { | |
825 | let mut pic_type = FrameType::I; | |
826 | let mut is_ref = false; | |
827 | while br.left() > 0 { | |
828 | let size = match self.nal_len { | |
829 | 1 => br.read_byte()? as usize, | |
830 | 2 => br.read_u16be()? as usize, | |
831 | 3 => br.read_u24be()? as usize, | |
832 | 4 => br.read_u32be()? as usize, | |
833 | _ => unreachable!(), | |
834 | }; | |
835 | validate!(br.left() >= (size as i64)); | |
836 | let offset = br.tell() as usize; | |
837 | let size = unescape_nal(&src[offset..][..size], &mut nal_buf); | |
838 | validate!(size > 0); | |
839 | let nal_ref_idc = nal_buf[0] >> 5; | |
840 | let nal_unit_type = nal_buf[0] & 0x1F; | |
841 | if nal_unit_type == 1 || nal_unit_type == 5 { | |
842 | let mut bitr = BitReader::new(&nal_buf[1..], BitReaderMode::BE); | |
843 | let (first_mb, slice_type) = parse_slice_header_minimal(&mut bitr)?; | |
844 | if first_mb == 0 && nal_ref_idc != 0 { | |
845 | is_ref = true; | |
846 | } | |
847 | let new_type = slice_type.to_frame_type(); | |
848 | pic_type = match (pic_type, new_type) { | |
849 | (FrameType::I, _) => new_type, | |
850 | (_, FrameType::B) => FrameType::B, | |
851 | _ => pic_type, | |
852 | }; | |
853 | } | |
854 | br.read_skip(size)?; | |
855 | } | |
856 | match self.skip_mode { | |
857 | FrameSkipMode::IntraOnly => { | |
858 | skip_decoding = pic_type != FrameType::I; | |
859 | }, | |
860 | FrameSkipMode::KeyframesOnly => { | |
861 | if !is_ref { | |
862 | skip_decoding = true; | |
863 | } | |
864 | }, | |
865 | _ => {}, | |
866 | }; | |
867 | br.seek(SeekFrom::Start(0))?; | |
868 | } | |
869 | ||
870 | let mut initial_ref_frames = Vec::new(); | |
871 | self.frame_refs.fill_ref_nums(&mut initial_ref_frames); | |
872 | ||
873 | while br.left() > 0 { | |
874 | let size = match self.nal_len { | |
875 | 1 => br.read_byte()? as usize, | |
876 | 2 => br.read_u16be()? as usize, | |
877 | 3 => br.read_u24be()? as usize, | |
878 | 4 => br.read_u32be()? as usize, | |
879 | _ => unreachable!(), | |
880 | }; | |
881 | validate!(br.left() >= (size as i64)); | |
882 | let offset = br.tell() as usize; | |
883 | let mut cur_nal_buf = Vec::with_capacity(size); | |
884 | let _size = unescape_nal(&src[offset..][..size], &mut cur_nal_buf); | |
885 | self.handle_nal(cur_nal_buf, supp, skip_decoding, user_id, pkt.ts)?; | |
886 | br.read_skip(size)?; | |
887 | } | |
888 | let mut fdec = None; | |
889 | std::mem::swap(&mut fdec, &mut self.cur_fdec); | |
890 | if let Some(fdc) = fdec { | |
891 | let cpic = &fdc.cur_pic; | |
892 | if cpic.is_ref { | |
893 | self.frame_refs.add_short_term(cpic.clone(), self.sps[self.cur_sps].num_ref_frames); | |
894 | } | |
895 | if let Some(lt_idx) = cpic.long_term { | |
896 | self.frame_refs.add_long_term(lt_idx, cpic.clone()); | |
897 | } | |
898 | let mut ref_frames = Vec::new(); | |
899 | self.frame_refs.fill_ref_nums(&mut ref_frames); | |
900 | queue_decoding(&mut self.dispatch, fdc, &initial_ref_frames, &ref_frames); | |
901 | } | |
902 | } else { | |
903 | //todo NAL detection | |
904 | unimplemented!(); | |
905 | } | |
906 | Ok(true) | |
907 | } | |
908 | fn has_output(&mut self) -> bool { | |
909 | if let Ok(ref ds) = self.dispatch.read() { | |
910 | ds.has_output() | |
911 | } else { | |
912 | panic!("can't peek into status"); | |
913 | } | |
914 | } | |
915 | fn get_frame(&mut self) -> (DecoderResult<NAFrameRef>, u32) { | |
916 | match wait_for_one(&mut self.dispatch) { | |
917 | Ok(cpic) => { | |
918 | let bufinfo = NABufferType::Video(cpic.buf.clone()); | |
919 | let ftype = cpic.pic_type; | |
920 | let dts = Some(u64::from(cpic.full_id)); | |
921 | let mut frm = NAFrame::new(cpic.time, ftype, cpic.is_idr, self.info.clone(), bufinfo); | |
922 | if let (Some(mydts), None) = (dts, frm.get_dts()) { | |
923 | frm.set_dts(Some(mydts)); | |
924 | } | |
925 | frm.set_id(cpic.user_id as i64); | |
926 | (Ok(frm.into_ref()), cpic.user_id) | |
927 | }, | |
928 | Err((err, id)) => (Err(err), id), | |
929 | } | |
930 | } | |
931 | fn flush(&mut self) { | |
932 | clear_threads(&mut self.dispatch); | |
933 | self.frame_refs.clear_refs(); | |
934 | } | |
935 | } | |
936 | ||
937 | impl NAOptionHandler for H264MTDecoder { | |
938 | fn get_supported_options(&self) -> &[NAOptionDefinition] { DECODER_OPTIONS } | |
939 | fn set_options(&mut self, options: &[NAOption]) { | |
940 | for option in options.iter() { | |
941 | for opt_def in DECODER_OPTIONS.iter() { | |
942 | if opt_def.check(option).is_ok() { | |
943 | match (option.name, &option.value) { | |
944 | (FRAME_SKIP_OPTION, NAValue::String(ref strval)) => { | |
945 | if let Ok(smode) = FrameSkipMode::from_str(strval) { | |
946 | self.skip_mode = smode; | |
947 | } | |
948 | }, | |
949 | (DEBLOCK_SKIP_OPTION, NAValue::Bool(val)) => { | |
950 | self.deblock_skip = *val; | |
951 | }, | |
952 | _ => {}, | |
953 | } | |
954 | } | |
955 | } | |
956 | } | |
957 | } | |
958 | fn query_option_value(&self, name: &str) -> Option<NAValue> { | |
959 | match name { | |
960 | FRAME_SKIP_OPTION => Some(NAValue::String(self.skip_mode.to_string())), | |
961 | DEBLOCK_SKIP_OPTION => Some(NAValue::Bool(self.deblock_skip)), | |
962 | _ => None, | |
963 | } | |
964 | } | |
965 | } | |
966 | ||
967 | pub fn get_decoder_mt() -> Box<dyn NADecoderMT + Send> { | |
968 | Box::new(H264MTDecoder::new()) | |
969 | } |