projects / nihav.git / blame
| Commit | Line | Data |
|---|---|---|
| 93839abd KS |
1 | use std::sync::Arc; |
| 2 | ||
| 47ecb2b7 KS |
3 | use nihav_core::codecs::*; |
| 4 | use nihav_core::io::bitreader::*; | |
| 5 | ||
| 6 | use super::*; | |
| 7 | ||
| 8 | struct H264Decoder { | |
| 9 | info: NACodecInfoRef, | |
| 10 | width: usize, | |
| 11 | height: usize, | |
| 12 | num_mbs: usize, | |
| 13 | nal_len: u8, | |
| 93839abd | 14 | sps: Vec<Arc<SeqParameterSet>>, |
| 47ecb2b7 | 15 | cur_sps: usize, |
| 93839abd | 16 | pps: Vec<Arc<PicParameterSet>>, |
| 47ecb2b7 KS |
17 | cur_pps: usize, |
| 18 | ||
| 19 | skip_mode: FrameSkipMode, | |
| 20 | deblock_skip: bool, | |
| 21 | ||
| 22 | is_mbaff: bool, | |
| 23 | ||
| 24 | cavlc_cb: CAVLCTables, | |
| 25 | ||
| 26 | sstate: SliceState, | |
| 27 | ||
| 28 | cur_pic: Option<PictureInfo>, | |
| 29 | cur_id: u16, | |
| 30 | has_pic: bool, | |
| 31 | frame_refs: FrameRefs, | |
| 32 | ||
| 33 | temporal_mv: bool, | |
| 34 | deblock_mode: u8, | |
| 35 | lf_alpha: i8, | |
| 36 | lf_beta: i8, | |
| 37 | is_s: bool, | |
| 38 | ||
| 39 | ipcm_buf: [u8; 256 + 64 + 64], | |
| 40 | ||
| 41 | mc_dsp: H264MC, | |
| 42 | ||
| 43 | transform_8x8_mode: bool, | |
| 44 | } | |
| 45 | ||
| 46 | impl H264Decoder { | |
| 47 | fn new() -> Self { | |
| 48 | let avg_vi = NAVideoInfo { width: 32, height: 32, flipped: false, format: YUV420_FORMAT, bits: 12 }; | |
| 49 | let avg_buf = alloc_video_buffer(avg_vi, 4).unwrap().get_vbuf().unwrap(); | |
| 50 | H264Decoder{ | |
| 51 | info: NACodecInfoRef::default(), | |
| 52 | width: 0, | |
| 53 | height: 0, | |
| 54 | num_mbs: 0, | |
| 55 | nal_len: 0, | |
| 56 | sps: Vec::with_capacity(1), | |
| 57 | cur_sps: 0, | |
| 58 | pps: Vec::with_capacity(3), | |
| 59 | cur_pps: 0, | |
| 60 | ||
| 61 | skip_mode: FrameSkipMode::default(), | |
| 62 | deblock_skip: false, | |
| 63 | ||
| 64 | is_mbaff: false, | |
| 65 | ||
| 66 | cavlc_cb: CAVLCTables::new(), | |
| 67 | ||
| 68 | sstate: SliceState::new(), | |
| 69 | cur_pic: None, | |
| 70 | cur_id: 0, | |
| 71 | has_pic: false, | |
| 72 | frame_refs: FrameRefs::new(), | |
| 73 | ||
| 74 | temporal_mv: false, | |
| 75 | deblock_mode: 0, | |
| 76 | lf_alpha: 0, | |
| 77 | lf_beta: 0, | |
| 78 | is_s: false, | |
| 79 | ||
| 80 | ipcm_buf: [0; 256 + 64 + 64], | |
| 81 | ||
| 82 | mc_dsp: H264MC::new(avg_buf), | |
| 83 | ||
| 84 | transform_8x8_mode: false, | |
| 85 | } | |
| 86 | } | |
| 87 | fn handle_nal(&mut self, src: &[u8], supp: &mut NADecoderSupport, skip_decoding: bool) -> DecoderResult<()> { | |
| 88 | validate!(!src.is_empty()); | |
| 89 | validate!((src[0] & 0x80) == 0); | |
| 90 | let nal_ref_idc = src[0] >> 5; | |
| 91 | let nal_unit_type = src[0] & 0x1F; | |
| 92 | ||
| 93 | let mut full_size = src.len() * 8; | |
| 94 | for &byte in src.iter().rev() { | |
| 95 | if byte == 0 { | |
| 96 | full_size -= 8; | |
| 97 | } else { | |
| 98 | full_size -= (byte.trailing_zeros() + 1) as usize; | |
| 99 | break; | |
| 100 | } | |
| 101 | } | |
| 102 | validate!(full_size > 0); | |
| 103 | match nal_unit_type { | |
| 104 | 1 | 5 if !skip_decoding => { | |
| 105 | let is_idr = nal_unit_type == 5; | |
| 106 | let mut br = BitReader::new(&src[..(full_size + 7)/8], BitReaderMode::BE); | |
| 107 | br.skip(8)?; | |
| 108 | ||
| 93839abd | 109 | let slice_hdr = parse_slice_header(&mut br, self.sps.as_slice(), self.pps.as_slice(), is_idr, nal_ref_idc)?; |
| 47ecb2b7 KS |
110 | validate!(br.tell() < full_size); |
| 111 | let full_id; | |
| 112 | if slice_hdr.first_mb_in_slice == 0 { | |
| 113 | validate!(self.cur_pic.is_none()); | |
| 114 | for (i, pps) in self.pps.iter().enumerate() { | |
| 115 | if pps.pic_parameter_set_id == slice_hdr.pic_parameter_set_id { | |
| 116 | self.cur_pps = i; | |
| 117 | break; | |
| 118 | } | |
| 119 | } | |
| 120 | for (i, sps) in self.sps.iter().enumerate() { | |
| 121 | if sps.seq_parameter_set_id == self.pps[self.cur_pps].seq_parameter_set_id { | |
| 122 | self.cur_sps = i; | |
| 123 | break; | |
| 124 | } | |
| 125 | } | |
| 126 | ||
| 127 | full_id = self.frame_refs.calc_picture_num(&slice_hdr, is_idr, nal_ref_idc, &self.sps[self.cur_sps]); | |
| 128 | ||
| 129 | let sps = &self.sps[self.cur_sps]; | |
| 130 | if sps.chroma_format_idc != 1 || sps.bit_depth_luma != 8 || sps.bit_depth_chroma != 8 { | |
| 131 | println!(" chroma fmt {} bits {}/{}", sps.chroma_format_idc, sps.bit_depth_luma, sps.bit_depth_chroma); | |
| 132 | return Err(DecoderError::NotImplemented); | |
| 133 | } | |
| 134 | //let pps = &self.pps[self.cur_pps]; | |
| 135 | ||
| 136 | if is_idr { | |
| 137 | self.frame_refs.clear_refs(); | |
| 138 | } | |
| 139 | ||
| 140 | self.width = sps.pic_width_in_mbs << 4; | |
| 141 | self.height = sps.pic_height_in_mbs << 4; | |
| 142 | self.num_mbs = sps.pic_width_in_mbs * sps.pic_height_in_mbs; | |
| 143 | self.mc_dsp.set_dimensions(self.width, self.height); | |
| 144 | ||
| 145 | self.is_mbaff = sps.mb_adaptive_frame_field && !slice_hdr.field_pic; | |
| 146 | if self.is_mbaff { | |
| 147 | println!("MBAFF"); | |
| 148 | return Err(DecoderError::NotImplemented); | |
| 149 | } | |
| 150 | if !sps.frame_mbs_only { | |
| 151 | println!("PAFF?"); | |
| 152 | return Err(DecoderError::NotImplemented); | |
| 153 | } | |
| 154 | ||
| 155 | //if slice_hdr.slice_type.is_b() { return Ok(()); } | |
| 156 | self.cur_id = full_id as u16; | |
| 157 | } else { | |
| 158 | if let Some(ref mut pic) = self.cur_pic { | |
| 159 | validate!(pic.cur_mb == slice_hdr.first_mb_in_slice); | |
| 160 | let new_type = slice_hdr.slice_type.to_frame_type(); | |
| 161 | pic.pic_type = match (pic.pic_type, new_type) { | |
| 162 | (FrameType::I, _) => new_type, | |
| 163 | (_, FrameType::B) => FrameType::B, | |
| 164 | _ => pic.pic_type, | |
| 165 | }; | |
| 166 | full_id = pic.full_id; | |
| 167 | } else { | |
| 168 | return Ok(());//Err(DecoderError::InvalidData); | |
| 169 | } | |
| 170 | validate!(self.cur_pps < self.pps.len() && self.pps[self.cur_pps].pic_parameter_set_id == slice_hdr.pic_parameter_set_id); | |
| 171 | } | |
| 172 | ||
| 173 | let sps = &self.sps[self.cur_sps]; | |
| 174 | let pps = &self.pps[self.cur_pps]; | |
| 175 | ||
| 176 | self.temporal_mv = !slice_hdr.direct_spatial_mv_pred; | |
| 177 | self.is_s = slice_hdr.slice_type == SliceType::SI || slice_hdr.slice_type == SliceType::SP; | |
| 178 | self.deblock_mode = slice_hdr.disable_deblocking_filter_idc; | |
| 179 | self.lf_alpha = slice_hdr.slice_alpha_c0_offset; | |
| 180 | self.lf_beta = slice_hdr.slice_beta_offset; | |
| 181 | ||
| 182 | self.frame_refs.select_refs(sps, &slice_hdr, full_id); | |
| 183 | ||
| 184 | if slice_hdr.adaptive_ref_pic_marking_mode { | |
| 185 | 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)?; | |
| 186 | } | |
| 187 | if slice_hdr.first_mb_in_slice == 0 { | |
| 188 | let ret = supp.pool_u8.get_free(); | |
| 189 | if ret.is_none() { | |
| 190 | return Err(DecoderError::AllocError); | |
| 191 | } | |
| 192 | let tmp_vinfo = NAVideoInfo::new(self.width, self.height, false, YUV420_FORMAT); | |
| 193 | let mut buf = ret.unwrap(); | |
| 194 | if buf.get_info() != tmp_vinfo { | |
| 195 | supp.pool_u8.reset(); | |
| 196 | supp.pool_u8.prealloc_video(tmp_vinfo, 4)?; | |
| 197 | let ret = supp.pool_u8.get_free(); | |
| 198 | if ret.is_none() { | |
| 199 | return Err(DecoderError::AllocError); | |
| 200 | } | |
| 201 | buf = ret.unwrap(); | |
| 202 | } | |
| 203 | self.cur_pic = Some(PictureInfo { | |
| 204 | id: slice_hdr.frame_num, | |
| 205 | full_id, | |
| 11d7aef2 KS |
206 | user_id: full_id, |
| 207 | time: NATimeInfo::new(None, None, None, 0, 0), | |
| 47ecb2b7 KS |
208 | pic_type: slice_hdr.slice_type.to_frame_type(), |
| 209 | buf, | |
| 210 | cur_mb: 0, | |
| 211 | is_ref: nal_ref_idc != 0, | |
| 11d7aef2 | 212 | is_idr, |
| 47ecb2b7 | 213 | long_term: get_long_term_id(is_idr, &slice_hdr), |
| 93839abd | 214 | mv_info: NABufferRef::new(FrameMV::new(sps.pic_width_in_mbs, sps.pic_height_in_mbs)), |
| 47ecb2b7 KS |
215 | }); |
| 216 | } | |
| 217 | ||
| 218 | self.transform_8x8_mode = pps.transform_8x8_mode; | |
| 219 | ||
| 220 | self.sstate.reset(sps.pic_width_in_mbs, sps.pic_height_in_mbs, slice_hdr.first_mb_in_slice); | |
| 221 | if !pps.entropy_coding_mode { | |
| 222 | self.has_pic = self.decode_slice_cavlc(&mut br, &slice_hdr, full_size)?; | |
| 223 | } else { | |
| 224 | br.align(); | |
| e6aaad5c | 225 | let start = br.tell() / 8; |
| 47ecb2b7 KS |
226 | let csrc = &src[start..]; |
| 227 | validate!(csrc.len() >= 2); | |
| 228 | let mut cabac = CABAC::new(csrc, slice_hdr.slice_type, slice_hdr.slice_qp, slice_hdr.cabac_init_idc as usize)?; | |
| 229 | self.has_pic = self.decode_slice_cabac(&mut cabac, &slice_hdr)?; | |
| 230 | } | |
| 231 | }, | |
| 232 | 2 => { // slice data partition A | |
| 233 | //slice header | |
| 234 | //slice id = read_ue() | |
| 235 | //cat 2 slice data (all but MB layer residual) | |
| 236 | return Err(DecoderError::NotImplemented); | |
| 237 | }, | |
| 238 | 3 => { // slice data partition B | |
| 239 | //slice id = read_ue() | |
| 240 | //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() } | |
| 241 | //cat 3 slice data (MB layer residual) | |
| 242 | return Err(DecoderError::NotImplemented); | |
| 243 | }, | |
| 244 | 4 => { // slice data partition C | |
| 245 | //slice id = read_ue() | |
| 246 | //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() } | |
| 247 | //cat 4 slice data (MB layer residual) | |
| 248 | return Err(DecoderError::NotImplemented); | |
| 249 | }, | |
| 250 | 6 => {}, //SEI | |
| 251 | 7 => { | |
| 252 | let sps = parse_sps(&src[1..])?; | |
| 93839abd | 253 | self.sps.push(Arc::new(sps)); |
| 47ecb2b7 KS |
254 | }, |
| 255 | 8 => { | |
| 256 | validate!(full_size >= 8 + 16); | |
| 257 | let pps = parse_pps(&src[1..], &self.sps, full_size - 8)?; | |
| 258 | let mut found = false; | |
| 259 | for stored_pps in self.pps.iter_mut() { | |
| 260 | if stored_pps.pic_parameter_set_id == pps.pic_parameter_set_id { | |
| 93839abd | 261 | *stored_pps = Arc::clone(&pps); |
| 47ecb2b7 KS |
262 | found = true; |
| 263 | break; | |
| 264 | } | |
| 265 | } | |
| 266 | if !found { | |
| 267 | self.pps.push(pps); | |
| 268 | } | |
| 269 | }, | |
| 270 | 9 => { // access unit delimiter | |
| 271 | }, | |
| 272 | 10 => {}, //end of sequence | |
| 273 | 11 => {}, //end of stream | |
| 274 | 12 => {}, //filler | |
| 275 | _ => {}, | |
| 276 | }; | |
| 277 | ||
| 278 | Ok(()) | |
| 279 | } | |
| 5f223cdb | 280 | fn pred_mv(sstate: &mut SliceState, frame_refs: &SimplifiedSliceRefs, mb_info: &mut CurrentMBInfo, cur_id: u16, temporal_mv: bool, direct_8x8: bool) { |
| 47ecb2b7 KS |
281 | let mb_type = mb_info.mb_type; |
| 282 | if !mb_type.is_4x4() { | |
| 283 | let (pw, ph) = mb_type.size(); | |
| 284 | let mut xoff = 0; | |
| 285 | let mut yoff = 0; | |
| 286 | if mb_type == MBType::Direct || mb_type == MBType::BSkip { | |
| 287 | sstate.predict_direct_mb(frame_refs, temporal_mv, direct_8x8, cur_id); | |
| 288 | } | |
| 289 | for part in 0..mb_type.num_parts() { | |
| 290 | if !mb_type.is_l1(part) { | |
| 291 | match mb_type { | |
| 292 | MBType::PSkip => sstate.predict_pskip(), | |
| 293 | MBType::BSkip | MBType::Direct => { | |
| 294 | }, | |
| 295 | _ => { | |
| 296 | sstate.predict(xoff, yoff, pw, ph, 0, | |
| 297 | mb_info.mv_l0[part], mb_info.ref_l0[part]); | |
| 298 | }, | |
| 299 | }; | |
| 300 | } | |
| 301 | if !mb_type.is_l0(part) && mb_type != MBType::BSkip && mb_type != MBType::Direct { | |
| 302 | sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part], mb_info.ref_l1[part]); | |
| 303 | } | |
| 304 | if pw != 16 { | |
| 305 | xoff += pw; | |
| 306 | } else { | |
| 307 | yoff += ph; | |
| 308 | } | |
| 309 | } | |
| 310 | } else { | |
| 311 | for part in 0..4 { | |
| 312 | let sub_type = mb_info.sub_mb_type[part]; | |
| 313 | let mut xoff = (part & 1) * 8; | |
| 314 | let mut yoff = (part & 2) * 4; | |
| 315 | let orig_x = xoff; | |
| 316 | let (pw, ph) = sub_type.size(); | |
| 317 | for subpart in 0..sub_type.num_parts() { | |
| 318 | if sub_type != SubMBType::Direct8x8 { | |
| 319 | if !sub_type.is_l1() { | |
| 320 | sstate.predict(xoff, yoff, pw, ph, 0, mb_info.mv_l0[part * 4 + subpart], mb_info.ref_l0[part]); | |
| 321 | } | |
| 322 | if !sub_type.is_l0() { | |
| 323 | sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part * 4 + subpart], mb_info.ref_l1[part]); | |
| 324 | } | |
| 325 | } else { | |
| 326 | for sblk in 0..4 { | |
| 327 | sstate.predict_direct_sub(frame_refs, temporal_mv, direct_8x8, cur_id, (xoff / 4) + (sblk & 1) + (yoff / 4) * 4 + (sblk & 2) * 2); | |
| 328 | } | |
| 329 | } | |
| 330 | xoff += pw; | |
| 331 | if xoff == orig_x + 8 { | |
| 332 | xoff -= 8; | |
| 333 | yoff += ph; | |
| 334 | } | |
| 335 | } | |
| 336 | } | |
| 337 | } | |
| 338 | } | |
| 339 | #[allow(clippy::cognitive_complexity)] | |
| 5f223cdb | 340 | fn handle_macroblock(&mut self, slice_hdr: &SliceHeader, mb_info: &mut CurrentMBInfo, slice_refs: &SimplifiedSliceRefs) { |
| 47ecb2b7 KS |
341 | let pps = &self.pps[self.cur_pps]; |
| 342 | ||
| 343 | let qp_y = mb_info.qp_y; | |
| 344 | let qpr = ((qp_y as i8) + pps.chroma_qp_index_offset).max(0).min(51) as usize; | |
| 345 | let qp_u = CHROMA_QUANTS[qpr]; | |
| 346 | let qpb = ((qp_y as i8) + pps.second_chroma_qp_index_offset).max(0).min(51) as usize; | |
| 347 | let qp_v = CHROMA_QUANTS[qpb]; | |
| 348 | ||
| 349 | let tx_bypass = qp_y == 0 && self.sps[self.cur_sps].qpprime_y_zero_transform_bypass; | |
| 350 | ||
| 351 | self.sstate.get_cur_mb().mb_type = mb_info.mb_type.into(); | |
| 352 | if mb_info.mb_type != MBType::PCM { | |
| 353 | self.sstate.get_cur_mb().qp_y = qp_y; | |
| 354 | self.sstate.get_cur_mb().qp_u = qp_u; | |
| 355 | self.sstate.get_cur_mb().qp_v = qp_v; | |
| 356 | self.sstate.get_cur_mb().transform_8x8 = mb_info.transform_size_8x8; | |
| 357 | } | |
| 358 | let has_dc = mb_info.mb_type.is_intra16x16() && mb_info.coded[24]; | |
| 359 | if has_dc { | |
| 360 | idct_luma_dc(&mut mb_info.coeffs[24], qp_y); | |
| 361 | for i in 0..16 { | |
| 362 | mb_info.coeffs[i][0] = mb_info.coeffs[24][i]; | |
| 363 | } | |
| 364 | } | |
| 754ab49a KS |
365 | if !tx_bypass { |
| 366 | if !mb_info.transform_size_8x8 { | |
| 367 | let quant_dc = !mb_info.mb_type.is_intra16x16(); | |
| 368 | for (coded, coeffs) in mb_info.coded[..16].iter_mut().zip(mb_info.coeffs[..16].iter_mut()) { | |
| 369 | if *coded { | |
| 370 | idct(coeffs, qp_y, quant_dc); | |
| 371 | } else if has_dc { | |
| 372 | idct_dc(coeffs, qp_y, quant_dc); | |
| 373 | *coded = true; | |
| 47ecb2b7 | 374 | } |
| 754ab49a KS |
375 | } |
| 376 | } else { | |
| 377 | for i in 0..4 { | |
| 378 | if mb_info.coded[(i & 1) * 2 + (i & 2) * 4] { | |
| 379 | dequant8x8(&mut mb_info.coeffs8x8[i].coeffs, &pps.scaling_list_8x8[!mb_info.mb_type.is_intra() as usize]); | |
| 380 | idct8x8(&mut mb_info.coeffs8x8[i].coeffs, qp_y); | |
| 47ecb2b7 | 381 | } |
| 47ecb2b7 KS |
382 | } |
| 383 | } | |
| 754ab49a KS |
384 | } else if !mb_info.transform_size_8x8 { |
| 385 | for i in 0..16 { | |
| 386 | if !mb_info.coded[i] && has_dc { | |
| 387 | mb_info.coded[i] = true; | |
| 47ecb2b7 KS |
388 | } |
| 389 | } | |
| 390 | } | |
| 391 | for chroma in 0..2 { | |
| 392 | let qp_c = if chroma == 0 { qp_u } else { qp_v }; | |
| 393 | if mb_info.cbpc != 0 { | |
| 394 | chroma_dc_transform(&mut mb_info.chroma_dc[chroma], qp_c); | |
| 395 | } | |
| 396 | for i in 0..4 { | |
| 397 | let blk_no = 16 + chroma * 4 + i; | |
| 398 | mb_info.coeffs[blk_no][0] = mb_info.chroma_dc[chroma][i]; | |
| 399 | if mb_info.coded[blk_no] { | |
| 400 | idct(&mut mb_info.coeffs[blk_no], qp_c, false); | |
| 401 | } else if mb_info.coeffs[blk_no][0] != 0 { | |
| 402 | idct_dc(&mut mb_info.coeffs[blk_no], qp_c, false); | |
| 403 | mb_info.coded[blk_no] = true; | |
| 404 | } | |
| 405 | } | |
| 406 | } | |
| 407 | if !pps.entropy_coding_mode || mb_info.mb_type.is_skip() || mb_info.mb_type.is_intra() { | |
| 408 | self.sstate.reset_mb_mv(); | |
| 409 | } | |
| 410 | if !mb_info.mb_type.is_intra() { | |
| 5f223cdb | 411 | Self::pred_mv(&mut self.sstate, slice_refs, mb_info, self.cur_id, self.temporal_mv, self.sps[self.cur_sps].direct_8x8_inference); |
| 47ecb2b7 KS |
412 | } |
| 413 | if !pps.constrained_intra_pred && mb_info.mb_type != MBType::Intra4x4 && mb_info.mb_type != MBType::Intra8x8 { | |
| 414 | self.sstate.fill_ipred(IntraPredMode::DC); | |
| 415 | } | |
| 416 | ||
| 417 | let xpos = self.sstate.mb_x * 16; | |
| 418 | let ypos = self.sstate.mb_y * 16; | |
| 419 | if let Some(ref mut pic) = self.cur_pic { | |
| 420 | let mut frm = NASimpleVideoFrame::from_video_buf(&mut pic.buf).unwrap(); | |
| 421 | if mb_info.mb_type != MBType::PCM { | |
| 422 | let weight_mode = if self.pps[self.cur_pps].weighted_pred && slice_hdr.slice_type.is_p() { | |
| 423 | 1 | |
| 424 | } else if slice_hdr.slice_type.is_b() { | |
| 425 | self.pps[self.cur_pps].weighted_bipred_idc | |
| 426 | } else { | |
| 427 | 0 | |
| 428 | }; | |
| 5f223cdb | 429 | recon_mb(&mut frm, slice_hdr, mb_info, &mut self.sstate, slice_refs, &mut self.mc_dsp, weight_mode); |
| 47ecb2b7 KS |
430 | } else { |
| 431 | 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)) { | |
| 432 | dline[..16].copy_from_slice(src); | |
| 433 | } | |
| 434 | 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)) { | |
| 435 | dline[..8].copy_from_slice(src); | |
| 436 | } | |
| 437 | 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)) { | |
| 438 | dline[..8].copy_from_slice(src); | |
| 439 | } | |
| 440 | } | |
| 441 | /*match mb_info.mb_type { | |
| 442 | MBType::BSkip | MBType::Direct | MBType::B16x16(_) | MBType::B16x8(_, _) | MBType::B8x16(_, _) | MBType::B8x8 => { | |
| 443 | let dstride = frm.stride[0]; | |
| 444 | let dst = &mut frm.data[frm.offset[0] + self.sstate.mb_x * 16 + self.sstate.mb_y * 16 * dstride..]; | |
| 445 | for el in dst[..16].iter_mut() { *el = 255; } | |
| 446 | for row in dst.chunks_mut(dstride).skip(1).take(15) { | |
| 447 | row[0] = 255; | |
| 448 | } | |
| 449 | }, | |
| 450 | _ => {}, | |
| 451 | };*/ | |
| 452 | self.sstate.save_ipred_context(&frm); | |
| 453 | } | |
| 454 | if let Some(ref mut pic) = self.cur_pic { | |
| 455 | let mv_info = &mut pic.mv_info; | |
| 456 | let mb_pos = self.sstate.mb_x + self.sstate.mb_y * mv_info.mb_stride; | |
| 457 | let mut mb = FrameMBInfo::new(); | |
| 458 | mb.mb_type = mb_info.mb_type.into(); | |
| 459 | for blk4 in 0..16 { | |
| 460 | mb.mv[blk4] = self.sstate.get_cur_blk4(blk4).mv; | |
| 461 | } | |
| 462 | for blk8 in 0..4 { | |
| 5f223cdb | 463 | mb.ref_poc[blk8] = slice_refs.map_refs(self.sstate.get_cur_blk8(blk8).ref_idx); |
| 47ecb2b7 KS |
464 | mb.ref_idx[blk8] = self.sstate.get_cur_blk8(blk8).ref_idx; |
| 465 | } | |
| 466 | mv_info.mbs[mb_pos] = mb; | |
| 467 | } | |
| 468 | if !self.deblock_skip && self.deblock_mode != 1 { | |
| 5f223cdb | 469 | self.sstate.fill_deblock(slice_refs, self.deblock_mode, self.is_s); |
| 47ecb2b7 KS |
470 | if let Some(ref mut pic) = self.cur_pic { |
| 471 | let mut frm = NASimpleVideoFrame::from_video_buf(&mut pic.buf).unwrap(); | |
| 472 | loop_filter_mb(&mut frm, &self.sstate, self.lf_alpha, self.lf_beta); | |
| 473 | } | |
| 474 | } | |
| 475 | self.sstate.next_mb(); | |
| 476 | } | |
| 477 | fn decode_slice_cavlc(&mut self, br: &mut BitReader, slice_hdr: &SliceHeader, full_size: usize) -> DecoderResult<bool> { | |
| 478 | const INTRA_CBP: [u8; 48] = [ | |
| 479 | 47, 31, 15, 0, 23, 27, 29, 30, 7, 11, 13, 14, 39, 43, 45, 46, | |
| 480 | 16, 3, 5, 10, 12, 19, 21, 26, 28, 35, 37, 42, 44, 1, 2, 4, | |
| 481 | 8, 17, 18, 20, 24, 6, 9, 22, 25, 32, 33, 34, 36, 40, 38, 41 | |
| 482 | ]; | |
| 483 | const INTER_CBP: [u8; 48] = [ | |
| 484 | 0, 16, 1, 2, 4, 8, 32, 3, 5, 10, 12, 15, 47, 7, 11, 13, | |
| 485 | 14, 6, 9, 31, 35, 37, 42, 44, 33, 34, 36, 40, 39, 43, 45, 46, | |
| 486 | 17, 18, 20, 24, 19, 21, 26, 28, 23, 27, 29, 30, 22, 25, 38, 41 | |
| 487 | ]; | |
| 488 | ||
| e6aaad5c | 489 | let mut mb_idx = slice_hdr.first_mb_in_slice; |
| 47ecb2b7 KS |
490 | let mut mb_info = CurrentMBInfo { qp_y: slice_hdr.slice_qp, ..Default::default() }; |
| 491 | let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip }; | |
| 5f223cdb KS |
492 | |
| 493 | let slice_refs = self.frame_refs.cur_refs.clone(); | |
| 494 | let sslice_refs = SimplifiedSliceRefs::new(&slice_refs); | |
| 495 | ||
| 47ecb2b7 KS |
496 | while br.tell() < full_size && mb_idx < self.num_mbs { |
| 497 | mb_info.coded = [false; 25]; | |
| 498 | mb_info.ref_l0 = [ZERO_REF; 4]; | |
| 499 | mb_info.ref_l1 = [ZERO_REF; 4]; | |
| 500 | mb_info.mv_l0 = [ZERO_MV; 16]; | |
| 501 | mb_info.mv_l1 = [ZERO_MV; 16]; | |
| 502 | mb_info.chroma_dc = [[0; 4]; 2]; | |
| 503 | mb_info.cbpy = 0; | |
| 504 | mb_info.cbpc = 0; | |
| 505 | ||
| 506 | if !slice_hdr.slice_type.is_intra() { | |
| 507 | let mb_skip_run = br.read_ue()? as usize; | |
| 508 | validate!(mb_idx + mb_skip_run <= self.num_mbs); | |
| 509 | mb_info.mb_type = skip_type; | |
| 510 | for _ in 0..mb_skip_run { | |
| 5f223cdb | 511 | self.handle_macroblock(slice_hdr, &mut mb_info, &sslice_refs); |
| 47ecb2b7 KS |
512 | mb_idx += 1; |
| 513 | } | |
| 514 | if mb_idx == self.num_mbs || br.tell() >= full_size { | |
| 515 | break; | |
| 516 | } | |
| 517 | } | |
| 518 | if br.tell() < full_size { | |
| 519 | if self.is_mbaff && ((mb_idx & 1) == 0) { | |
| 520 | let _mb_field_decoding = br.read_bool()?; | |
| 521 | } | |
| 522 | let mut mb_type = decode_mb_type_cavlc(br, slice_hdr)?; | |
| 523 | mb_info.mb_type = mb_type; | |
| 524 | mb_info.transform_size_8x8 = false; | |
| 525 | if mb_type == MBType::PCM { | |
| 526 | br.align(); | |
| 527 | for pix in self.ipcm_buf[..256 + 64 + 64].iter_mut() { | |
| 528 | *pix = br.read(8)? as u8; | |
| 529 | } | |
| 530 | self.sstate.fill_ncoded(16); | |
| 531 | } else { | |
| 532 | if self.transform_8x8_mode && mb_type == MBType::Intra4x4 { | |
| 533 | mb_info.transform_size_8x8 = br.read_bool()?; | |
| 534 | if mb_info.transform_size_8x8 { | |
| 535 | mb_type = MBType::Intra8x8; | |
| 536 | mb_info.mb_type = MBType::Intra8x8; | |
| 537 | } | |
| 538 | } | |
| 539 | decode_mb_pred_cavlc(br, slice_hdr, mb_type, &mut self.sstate, &mut mb_info)?; | |
| 540 | let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type { | |
| 541 | (cbpy, cbpc) | |
| 542 | } else { | |
| 543 | let cbp_id = br.read_ue()? as usize; | |
| 544 | validate!(cbp_id < INTRA_CBP.len()); | |
| 545 | let cbp = if mb_type == MBType::Intra4x4 || mb_type == MBType::Intra8x8 { | |
| 546 | INTRA_CBP[cbp_id] | |
| 547 | } else { | |
| 548 | INTER_CBP[cbp_id] | |
| 549 | }; | |
| 550 | if self.transform_8x8_mode && (cbp & 0xF) != 0 && mb_info.can_have_8x8_tx(self.sps[self.cur_sps].direct_8x8_inference) { | |
| 551 | mb_info.transform_size_8x8 = br.read_bool()?; | |
| 552 | } | |
| 553 | ((cbp & 0xF), (cbp >> 4)) | |
| 554 | }; | |
| 555 | mb_info.cbpy = cbpy; | |
| 556 | mb_info.cbpc = cbpc; | |
| 557 | self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy; | |
| 558 | if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() { | |
| 559 | let mb_qp_delta = br.read_se()?; | |
| 560 | validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25); | |
| 561 | let new_qp = mb_qp_delta + i32::from(mb_info.qp_y); | |
| 562 | mb_info.qp_y = if new_qp < 0 { | |
| 563 | (new_qp + 52) as u8 | |
| 564 | } else if new_qp >= 52 { | |
| 565 | (new_qp - 52) as u8 | |
| 566 | } else { | |
| 567 | new_qp as u8 | |
| 568 | }; | |
| 569 | mb_info.coeffs = [[0; 16]; 25]; | |
| 570 | if self.transform_8x8_mode { | |
| 571 | mb_info.clear_coeffs8x8(); | |
| 572 | } | |
| 573 | mb_info.chroma_dc = [[0; 4]; 2]; | |
| 574 | decode_residual_cavlc(br, &mut self.sstate, &mut mb_info, &self.cavlc_cb)?; | |
| 575 | } | |
| 576 | } | |
| 5f223cdb | 577 | self.handle_macroblock(slice_hdr, &mut mb_info, &sslice_refs); |
| 47ecb2b7 KS |
578 | } |
| 579 | mb_idx += 1; | |
| 580 | } | |
| 581 | if let Some(ref mut pic) = self.cur_pic { | |
| 582 | pic.cur_mb = mb_idx; | |
| 583 | } | |
| 584 | Ok(mb_idx == self.num_mbs) | |
| 585 | } | |
| 586 | fn decode_slice_cabac(&mut self, cabac: &mut CABAC, slice_hdr: &SliceHeader) -> DecoderResult<bool> { | |
| e6aaad5c | 587 | let mut mb_idx = slice_hdr.first_mb_in_slice; |
| 47ecb2b7 KS |
588 | let mut prev_mb_skipped = false; |
| 589 | let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip }; | |
| 590 | let mut last_qp_diff = false; | |
| 591 | ||
| 592 | let mut mb_info = CurrentMBInfo { qp_y: slice_hdr.slice_qp, ..Default::default() }; | |
| 593 | ||
| 5f223cdb KS |
594 | let slice_refs = self.frame_refs.cur_refs.clone(); |
| 595 | let sslice_refs = SimplifiedSliceRefs::new(&slice_refs); | |
| 596 | ||
| 47ecb2b7 KS |
597 | while mb_idx < self.num_mbs { |
| 598 | mb_info.coded = [false; 25]; | |
| 599 | mb_info.ref_l0 = [ZERO_REF; 4]; | |
| 600 | mb_info.ref_l1 = [ZERO_REF; 4]; | |
| 601 | mb_info.mv_l0 = [ZERO_MV; 16]; | |
| 602 | mb_info.mv_l1 = [ZERO_MV; 16]; | |
| 603 | mb_info.chroma_dc = [[0; 4]; 2]; | |
| 604 | mb_info.cbpy = 0; | |
| 605 | mb_info.cbpc = 0; | |
| 606 | let mb_skip = cabac_decode_mbskip(cabac, &self.sstate, slice_hdr); | |
| 607 | if !mb_skip { | |
| 608 | if self.is_mbaff && (((mb_idx & 1) == 0) || (prev_mb_skipped && ((mb_idx & 1) == 1))) { | |
| 609 | let _mb_field_decoding = cabac.decode_bit(70); | |
| 610 | } | |
| 611 | let mut mb_type = cabac_decode_mb_type(cabac, slice_hdr, &self.sstate); | |
| 612 | mb_info.mb_type = mb_type; | |
| 613 | mb_info.transform_size_8x8 = false; | |
| 614 | if mb_type == MBType::PCM { | |
| 615 | let ipcm_size = 256 + 64 + 64; | |
| 616 | validate!(cabac.pos + ipcm_size <= cabac.src.len()); | |
| 617 | self.ipcm_buf[..ipcm_size].copy_from_slice(&cabac.src[cabac.pos..][..ipcm_size]); | |
| 618 | cabac.pos += ipcm_size; | |
| 619 | cabac.reinit()?; | |
| 620 | last_qp_diff = false; | |
| 621 | } else { | |
| 622 | if self.transform_8x8_mode && mb_type == MBType::Intra4x4 { | |
| 623 | let mut ctx = 0; | |
| 624 | if self.sstate.get_top_mb().transform_8x8 { | |
| 625 | ctx += 1; | |
| 626 | } | |
| 627 | if self.sstate.get_left_mb().transform_8x8 { | |
| 628 | ctx += 1; | |
| 629 | } | |
| 630 | mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx); | |
| 631 | if mb_info.transform_size_8x8 { | |
| 632 | mb_type = MBType::Intra8x8; | |
| 633 | mb_info.mb_type = MBType::Intra8x8; | |
| 634 | } | |
| 635 | } | |
| 636 | decode_mb_pred_cabac(cabac, slice_hdr, mb_type, &mut self.sstate, &mut mb_info); | |
| 637 | let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type { | |
| 638 | (cbpy, cbpc) | |
| 639 | } else { | |
| 640 | decode_cbp_cabac(cabac, &self.sstate) | |
| 641 | }; | |
| 642 | if self.transform_8x8_mode && cbpy != 0 && mb_info.can_have_8x8_tx(self.sps[self.cur_sps].direct_8x8_inference) { | |
| 643 | let mut ctx = 0; | |
| 644 | if self.sstate.get_top_mb().transform_8x8 { | |
| 645 | ctx += 1; | |
| 646 | } | |
| 647 | if self.sstate.get_left_mb().transform_8x8 { | |
| 648 | ctx += 1; | |
| 649 | } | |
| 650 | mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx); | |
| 651 | } | |
| 652 | if mb_type.is_intra() { | |
| 653 | self.sstate.get_cur_mb().cmode = mb_info.chroma_ipred; | |
| 654 | } | |
| 655 | mb_info.cbpy = cbpy; | |
| 656 | mb_info.cbpc = cbpc; | |
| 657 | self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy; | |
| 658 | if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() { | |
| 659 | let mb_qp_delta = decode_mb_qp_delta_cabac(cabac, last_qp_diff as usize); | |
| 660 | validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25); | |
| 661 | last_qp_diff = mb_qp_delta != 0; | |
| 662 | let new_qp = mb_qp_delta + i32::from(mb_info.qp_y); | |
| 663 | mb_info.qp_y = if new_qp < 0 { | |
| 664 | (new_qp + 52) as u8 | |
| 665 | } else if new_qp >= 52 { | |
| 666 | (new_qp - 52) as u8 | |
| 667 | } else { | |
| 668 | new_qp as u8 | |
| 669 | }; | |
| 670 | mb_info.coeffs = [[0; 16]; 25]; | |
| 671 | if self.transform_8x8_mode { | |
| 672 | mb_info.clear_coeffs8x8(); | |
| 673 | } | |
| 674 | mb_info.chroma_dc = [[0; 4]; 2]; | |
| 675 | decode_residual_cabac(cabac, &mut self.sstate, &mut mb_info); | |
| 676 | } else { | |
| 677 | last_qp_diff = false; | |
| 678 | } | |
| 679 | } | |
| 680 | } else { | |
| 681 | mb_info.mb_type = skip_type; | |
| 682 | mb_info.transform_size_8x8 = false; | |
| 683 | last_qp_diff = false; | |
| 684 | } | |
| 5f223cdb | 685 | self.handle_macroblock(slice_hdr, &mut mb_info, &sslice_refs); |
| 47ecb2b7 KS |
686 | prev_mb_skipped = mb_skip; |
| 687 | if !(self.is_mbaff && ((mb_idx & 1) == 0)) && cabac.decode_terminate() { | |
| 688 | if let Some(ref mut pic) = self.cur_pic { | |
| 689 | pic.cur_mb = mb_idx + 1; | |
| 690 | } | |
| 691 | return Ok(mb_idx + 1 == self.num_mbs); | |
| 692 | } | |
| 693 | mb_idx += 1; | |
| 694 | } | |
| 695 | Err(DecoderError::InvalidData) | |
| 696 | } | |
| 697 | } | |
| 698 | ||
| 699 | impl NADecoder for H264Decoder { | |
| 700 | fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { | |
| 701 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { | |
| 702 | let fmt = YUV420_FORMAT; | |
| 703 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, fmt)); | |
| 704 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); | |
| 705 | ||
| 706 | let edata = info.get_extradata().unwrap(); | |
| 707 | //print!("edata:"); for &el in edata.iter() { print!(" {:02X}", el); } println!(); | |
| 708 | if edata.len() > 11 && &edata[0..4] == b"avcC" { | |
| 709 | let mut mr = MemoryReader::new_read(edata.as_slice()); | |
| 710 | let mut br = ByteReader::new(&mut mr); | |
| 711 | let mut nal_buf = Vec::new(); | |
| 712 | ||
| 713 | br.read_skip(4)?; | |
| 714 | let version = br.read_byte()?; | |
| 715 | validate!(version == 1); | |
| 716 | let profile = br.read_byte()?; | |
| 717 | let _compatibility = br.read_byte()?; | |
| 718 | let _level = br.read_byte()?; | |
| 719 | let b = br.read_byte()?; | |
| 720 | validate!((b & 0xFC) == 0xFC); | |
| 721 | self.nal_len = (b & 3) + 1; | |
| 722 | let b = br.read_byte()?; | |
| 723 | validate!((b & 0xE0) == 0xE0); | |
| 724 | let num_sps = (b & 0x1F) as usize; | |
| 725 | for _ in 0..num_sps { | |
| 726 | let len = br.read_u16be()? as usize; | |
| 727 | let offset = br.tell() as usize; | |
| 728 | validate!((br.peek_byte()? & 0x1F) == 7); | |
| 729 | let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf); | |
| 730 | self.handle_nal(&nal_buf, supp, true)?; | |
| 731 | br.read_skip(len)?; | |
| 732 | } | |
| 733 | let num_pps = br.read_byte()? as usize; | |
| 734 | for _ in 0..num_pps { | |
| 735 | let len = br.read_u16be()? as usize; | |
| 736 | let offset = br.tell() as usize; | |
| 737 | validate!((br.peek_byte()? & 0x1F) == 8); | |
| 738 | let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf); | |
| 739 | self.handle_nal(&nal_buf, supp, true)?; | |
| 740 | br.read_skip(len)?; | |
| 741 | } | |
| 742 | if br.left() > 0 { | |
| 743 | match profile { | |
| 744 | 100 | 110 | 122 | 144 => { | |
| 745 | let b = br.read_byte()?; | |
| 746 | validate!((b & 0xFC) == 0xFC); | |
| 747 | // b & 3 -> chroma format | |
| 748 | let b = br.read_byte()?; | |
| 749 | validate!((b & 0xF8) == 0xF8); | |
| 750 | // b & 7 -> luma depth minus 8 | |
| 751 | let b = br.read_byte()?; | |
| 752 | validate!((b & 0xF8) == 0xF8); | |
| 753 | // b & 7 -> chroma depth minus 8 | |
| 754 | let num_spsext = br.read_byte()? as usize; | |
| 755 | for _ in 0..num_spsext { | |
| 756 | let len = br.read_u16be()? as usize; | |
| 757 | // parse spsext | |
| 758 | br.read_skip(len)?; | |
| 759 | } | |
| 760 | }, | |
| 761 | _ => {}, | |
| 762 | }; | |
| 763 | } | |
| 764 | } else { | |
| 765 | return Err(DecoderError::NotImplemented); | |
| 766 | } | |
| 767 | ||
| 768 | self.width = vinfo.get_width(); | |
| 769 | self.height = vinfo.get_height(); | |
| 770 | ||
| 771 | if (self.width == 0 || self.height == 0) && !self.sps.is_empty() { | |
| 772 | self.width = self.sps[0].pic_width_in_mbs * 16; | |
| 773 | self.height = self.sps[0].pic_height_in_mbs * 16; | |
| 774 | } | |
| 775 | ||
| 776 | let num_bufs = if !self.sps.is_empty() { | |
| e6aaad5c | 777 | self.sps[0].num_ref_frames + 1 |
| 47ecb2b7 KS |
778 | } else { |
| 779 | 3 | |
| 780 | }.max(16 + 1); | |
| 781 | supp.pool_u8.set_dec_bufs(num_bufs); | |
| 782 | supp.pool_u8.prealloc_video(NAVideoInfo::new(self.width, self.height, false, fmt), 4)?; | |
| 783 | ||
| 784 | Ok(()) | |
| 785 | } else { | |
| 786 | Err(DecoderError::InvalidData) | |
| 787 | } | |
| 788 | } | |
| 789 | fn decode(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { | |
| 790 | let src = pkt.get_buffer(); | |
| 791 | ||
| 792 | let mut mr = MemoryReader::new_read(&src); | |
| 793 | let mut br = ByteReader::new(&mut mr); | |
| 794 | let mut nal_buf = Vec::with_capacity(src.len()); | |
| 795 | if self.nal_len > 0 { | |
| 796 | let mut skip_decoding = false; | |
| 797 | if self.skip_mode != FrameSkipMode::None { | |
| 798 | let mut pic_type = FrameType::I; | |
| 799 | let mut is_ref = false; | |
| 800 | while br.left() > 0 { | |
| 801 | let size = match self.nal_len { | |
| 802 | 1 => br.read_byte()? as usize, | |
| 803 | 2 => br.read_u16be()? as usize, | |
| 804 | 3 => br.read_u24be()? as usize, | |
| 805 | 4 => br.read_u32be()? as usize, | |
| 806 | _ => unreachable!(), | |
| 807 | }; | |
| 808 | validate!(br.left() >= (size as i64)); | |
| 809 | let offset = br.tell() as usize; | |
| 810 | let size = unescape_nal(&src[offset..][..size], &mut nal_buf); | |
| 811 | validate!(size > 0); | |
| 812 | let nal_ref_idc = nal_buf[0] >> 5; | |
| 813 | let nal_unit_type = nal_buf[0] & 0x1F; | |
| 814 | if nal_unit_type == 1 || nal_unit_type == 5 { | |
| 815 | let mut bitr = BitReader::new(&nal_buf[1..], BitReaderMode::BE); | |
| 816 | let (first_mb, slice_type) = parse_slice_header_minimal(&mut bitr)?; | |
| 817 | if first_mb == 0 && nal_ref_idc != 0 { | |
| 818 | is_ref = true; | |
| 819 | } | |
| 820 | let new_type = slice_type.to_frame_type(); | |
| 821 | pic_type = match (pic_type, new_type) { | |
| 822 | (FrameType::I, _) => new_type, | |
| 823 | (_, FrameType::B) => FrameType::B, | |
| 824 | _ => pic_type, | |
| 825 | }; | |
| 826 | } | |
| 827 | br.read_skip(size)?; | |
| 828 | } | |
| 829 | match self.skip_mode { | |
| 830 | FrameSkipMode::IntraOnly => { | |
| 831 | skip_decoding = pic_type != FrameType::I; | |
| 832 | }, | |
| 833 | FrameSkipMode::KeyframesOnly => { | |
| 834 | if !is_ref { | |
| 835 | skip_decoding = true; | |
| 836 | } | |
| 837 | }, | |
| 838 | _ => {}, | |
| 839 | }; | |
| 840 | br.seek(SeekFrom::Start(0))?; | |
| 841 | } | |
| 842 | while br.left() > 0 { | |
| 843 | let size = match self.nal_len { | |
| 844 | 1 => br.read_byte()? as usize, | |
| 845 | 2 => br.read_u16be()? as usize, | |
| 846 | 3 => br.read_u24be()? as usize, | |
| 847 | 4 => br.read_u32be()? as usize, | |
| 848 | _ => unreachable!(), | |
| 849 | }; | |
| 850 | validate!(br.left() >= (size as i64)); | |
| 851 | let offset = br.tell() as usize; | |
| 852 | let _size = unescape_nal(&src[offset..][..size], &mut nal_buf); | |
| 853 | self.handle_nal(nal_buf.as_slice(), supp, skip_decoding)?; | |
| 854 | br.read_skip(size)?; | |
| 855 | } | |
| 856 | } else { | |
| 857 | //todo NAL detection | |
| 858 | unimplemented!(); | |
| 859 | } | |
| 860 | ||
| 861 | let (bufinfo, ftype, dts) = if self.has_pic && self.cur_pic.is_some() { | |
| 862 | let mut npic = None; | |
| 863 | std::mem::swap(&mut self.cur_pic, &mut npic); | |
| 864 | let cpic = npic.unwrap(); | |
| 865 | let ret = (NABufferType::Video(cpic.buf.clone()), cpic.pic_type, Some(u64::from(cpic.full_id))); | |
| 866 | if cpic.is_ref { | |
| 867 | self.frame_refs.add_short_term(cpic.clone(), self.sps[self.cur_sps].num_ref_frames); | |
| 868 | } | |
| 869 | if let Some(lt_idx) = cpic.long_term { | |
| 870 | self.frame_refs.add_long_term(lt_idx, cpic); | |
| 871 | } | |
| 872 | ret | |
| 873 | } else { | |
| 874 | (NABufferType::None, FrameType::Skip, None) | |
| 875 | }; | |
| 876 | ||
| 877 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); | |
| 878 | frm.set_keyframe(ftype == FrameType::I); | |
| 879 | if let (Some(mydts), None) = (dts, frm.get_dts()) { | |
| 880 | frm.set_dts(Some(mydts)); | |
| 881 | } | |
| 882 | if let Some(dts) = dts { | |
| 883 | frm.set_id(dts as i64); | |
| 884 | } | |
| 885 | frm.set_frame_type(ftype); | |
| 886 | Ok(frm.into_ref()) | |
| 887 | } | |
| 888 | fn flush(&mut self) { | |
| 889 | } | |
| 890 | } | |
| 891 | ||
| 892 | impl NAOptionHandler for H264Decoder { | |
| 893 | fn get_supported_options(&self) -> &[NAOptionDefinition] { DECODER_OPTIONS } | |
| 894 | fn set_options(&mut self, options: &[NAOption]) { | |
| 895 | for option in options.iter() { | |
| 896 | for opt_def in DECODER_OPTIONS.iter() { | |
| 897 | if opt_def.check(option).is_ok() { | |
| 898 | match (option.name, &option.value) { | |
| 899 | (FRAME_SKIP_OPTION, NAValue::String(ref strval)) => { | |
| 900 | if let Ok(smode) = FrameSkipMode::from_str(strval) { | |
| 901 | self.skip_mode = smode; | |
| 902 | } | |
| 903 | }, | |
| 904 | (DEBLOCK_SKIP_OPTION, NAValue::Bool(val)) => { | |
| 905 | self.deblock_skip = *val; | |
| 906 | }, | |
| 907 | _ => {}, | |
| 908 | } | |
| 909 | } | |
| 910 | } | |
| 911 | } | |
| 912 | } | |
| 913 | fn query_option_value(&self, name: &str) -> Option<NAValue> { | |
| 914 | match name { | |
| 915 | FRAME_SKIP_OPTION => Some(NAValue::String(self.skip_mode.to_string())), | |
| 916 | DEBLOCK_SKIP_OPTION => Some(NAValue::Bool(self.deblock_skip)), | |
| 917 | _ => None, | |
| 918 | } | |
| 919 | } | |
| 920 | } | |
| 921 | ||
| 922 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { | |
| 923 | Box::new(H264Decoder::new()) | |
| 924 | } |