| 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 sslice_refs = SimplifiedSliceRefs::new(refs); |
| 40 | |
| 41 | let mut br = BitReader::new(&nal[hdr_size / 8..], BitReaderMode::BE); |
| 42 | let mut dst_pic = self.cur_pic.clone(); |
| 43 | let mut dst_frm = NASimpleVideoFrame::from_video_buf(&mut dst_pic.buf).unwrap(); |
| 44 | if !self.pps.entropy_coding_mode { |
| 45 | br.skip((hdr_size & 7) as u32)?; |
| 46 | self.decode_slice_cavlc(&mut br, full_size - (hdr_size & !7), hdr, &sslice_refs, &mut dst_frm) |
| 47 | } else { |
| 48 | let csrc = &nal[(hdr_size + 7) / 8..]; |
| 49 | validate!(csrc.len() >= 2); |
| 50 | let mut cabac = CABAC::new(csrc, hdr.slice_type, hdr.slice_qp, hdr.cabac_init_idc as usize)?; |
| 51 | self.decode_slice_cabac(&mut cabac, hdr, &sslice_refs, &mut dst_frm) |
| 52 | } |
| 53 | } |
| 54 | fn decode_slice_cavlc(&mut self, br: &mut BitReader, full_size: usize, slice_hdr: &SliceHeader, refs: &SimplifiedSliceRefs, frm: &mut NASimpleVideoFrame<u8>) -> DecoderResult<usize> { |
| 55 | const INTRA_CBP: [u8; 48] = [ |
| 56 | 47, 31, 15, 0, 23, 27, 29, 30, 7, 11, 13, 14, 39, 43, 45, 46, |
| 57 | 16, 3, 5, 10, 12, 19, 21, 26, 28, 35, 37, 42, 44, 1, 2, 4, |
| 58 | 8, 17, 18, 20, 24, 6, 9, 22, 25, 32, 33, 34, 36, 40, 38, 41 |
| 59 | ]; |
| 60 | const INTER_CBP: [u8; 48] = [ |
| 61 | 0, 16, 1, 2, 4, 8, 32, 3, 5, 10, 12, 15, 47, 7, 11, 13, |
| 62 | 14, 6, 9, 31, 35, 37, 42, 44, 33, 34, 36, 40, 39, 43, 45, 46, |
| 63 | 17, 18, 20, 24, 19, 21, 26, 28, 23, 27, 29, 30, 22, 25, 38, 41 |
| 64 | ]; |
| 65 | |
| 66 | let mut mb_idx = slice_hdr.first_mb_in_slice; |
| 67 | let mut mb_info = CurrentMBInfo { qp_y: slice_hdr.slice_qp, ..Default::default() }; |
| 68 | let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip }; |
| 69 | while br.tell() < full_size && mb_idx < self.num_mbs { |
| 70 | mb_info.coded = [false; 25]; |
| 71 | mb_info.ref_l0 = [ZERO_REF; 4]; |
| 72 | mb_info.ref_l1 = [ZERO_REF; 4]; |
| 73 | mb_info.mv_l0 = [ZERO_MV; 16]; |
| 74 | mb_info.mv_l1 = [ZERO_MV; 16]; |
| 75 | mb_info.chroma_dc = [[0; 4]; 2]; |
| 76 | mb_info.cbpy = 0; |
| 77 | mb_info.cbpc = 0; |
| 78 | |
| 79 | if !slice_hdr.slice_type.is_intra() { |
| 80 | let mb_skip_run = br.read_ue()? as usize; |
| 81 | validate!(mb_idx + mb_skip_run <= self.num_mbs); |
| 82 | mb_info.mb_type = skip_type; |
| 83 | for _ in 0..mb_skip_run { |
| 84 | self.handle_macroblock(slice_hdr, &mut mb_info, refs, frm)?; |
| 85 | mb_idx += 1; |
| 86 | } |
| 87 | if mb_idx == self.num_mbs || br.tell() >= full_size { |
| 88 | break; |
| 89 | } |
| 90 | } |
| 91 | if br.tell() < full_size { |
| 92 | if self.is_mbaff && ((mb_idx & 1) == 0) { |
| 93 | let _mb_field_decoding = br.read_bool()?; |
| 94 | } |
| 95 | let mut mb_type = decode_mb_type_cavlc(br, slice_hdr)?; |
| 96 | mb_info.mb_type = mb_type; |
| 97 | mb_info.transform_size_8x8 = false; |
| 98 | if mb_type == MBType::PCM { |
| 99 | br.align(); |
| 100 | for pix in self.ipcm_buf[..256 + 64 + 64].iter_mut() { |
| 101 | *pix = br.read(8)? as u8; |
| 102 | } |
| 103 | self.sstate.fill_ncoded(16); |
| 104 | } else { |
| 105 | if self.pps.transform_8x8_mode && mb_type == MBType::Intra4x4 { |
| 106 | mb_info.transform_size_8x8 = br.read_bool()?; |
| 107 | if mb_info.transform_size_8x8 { |
| 108 | mb_type = MBType::Intra8x8; |
| 109 | mb_info.mb_type = MBType::Intra8x8; |
| 110 | } |
| 111 | } |
| 112 | decode_mb_pred_cavlc(br, slice_hdr, mb_type, &mut self.sstate, &mut mb_info)?; |
| 113 | let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type { |
| 114 | (cbpy, cbpc) |
| 115 | } else { |
| 116 | let cbp_id = br.read_ue()? as usize; |
| 117 | validate!(cbp_id < INTRA_CBP.len()); |
| 118 | let cbp = if mb_type == MBType::Intra4x4 || mb_type == MBType::Intra8x8 { |
| 119 | INTRA_CBP[cbp_id] |
| 120 | } else { |
| 121 | INTER_CBP[cbp_id] |
| 122 | }; |
| 123 | if self.pps.transform_8x8_mode && (cbp & 0xF) != 0 && mb_info.can_have_8x8_tx(self.sps.direct_8x8_inference) { |
| 124 | mb_info.transform_size_8x8 = br.read_bool()?; |
| 125 | } |
| 126 | ((cbp & 0xF), (cbp >> 4)) |
| 127 | }; |
| 128 | mb_info.cbpy = cbpy; |
| 129 | mb_info.cbpc = cbpc; |
| 130 | self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy; |
| 131 | if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() { |
| 132 | let mb_qp_delta = br.read_se()?; |
| 133 | validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25); |
| 134 | let new_qp = mb_qp_delta + i32::from(mb_info.qp_y); |
| 135 | mb_info.qp_y = if new_qp < 0 { |
| 136 | (new_qp + 52) as u8 |
| 137 | } else if new_qp >= 52 { |
| 138 | (new_qp - 52) as u8 |
| 139 | } else { |
| 140 | new_qp as u8 |
| 141 | }; |
| 142 | mb_info.coeffs = [[0; 16]; 25]; |
| 143 | if self.pps.transform_8x8_mode { |
| 144 | mb_info.clear_coeffs8x8(); |
| 145 | } |
| 146 | mb_info.chroma_dc = [[0; 4]; 2]; |
| 147 | decode_residual_cavlc(br, &mut self.sstate, &mut mb_info, &self.cavlc_cb)?; |
| 148 | } |
| 149 | } |
| 150 | self.handle_macroblock(slice_hdr, &mut mb_info, refs, frm)?; |
| 151 | } |
| 152 | mb_idx += 1; |
| 153 | if let Ok(disp) = self.dispatch.read() { |
| 154 | disp.update_pos(self.cur_pic.full_id, mb_idx); |
| 155 | } |
| 156 | } |
| 157 | Ok(mb_idx) |
| 158 | } |
| 159 | fn decode_slice_cabac(&mut self, cabac: &mut CABAC, slice_hdr: &SliceHeader, refs: &SimplifiedSliceRefs, frm: &mut NASimpleVideoFrame<u8>) -> DecoderResult<usize> { |
| 160 | let mut mb_idx = slice_hdr.first_mb_in_slice; |
| 161 | let mut prev_mb_skipped = false; |
| 162 | let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip }; |
| 163 | let mut last_qp_diff = false; |
| 164 | |
| 165 | let mut mb_info = CurrentMBInfo { qp_y: slice_hdr.slice_qp, ..Default::default() }; |
| 166 | |
| 167 | while mb_idx < self.num_mbs { |
| 168 | mb_info.coded = [false; 25]; |
| 169 | mb_info.ref_l0 = [ZERO_REF; 4]; |
| 170 | mb_info.ref_l1 = [ZERO_REF; 4]; |
| 171 | mb_info.mv_l0 = [ZERO_MV; 16]; |
| 172 | mb_info.mv_l1 = [ZERO_MV; 16]; |
| 173 | mb_info.chroma_dc = [[0; 4]; 2]; |
| 174 | mb_info.cbpy = 0; |
| 175 | mb_info.cbpc = 0; |
| 176 | let mb_skip = cabac_decode_mbskip(cabac, &self.sstate, slice_hdr); |
| 177 | if !mb_skip { |
| 178 | if self.is_mbaff && (((mb_idx & 1) == 0) || (prev_mb_skipped && ((mb_idx & 1) == 1))) { |
| 179 | let _mb_field_decoding = cabac.decode_bit(70); |
| 180 | } |
| 181 | let mut mb_type = cabac_decode_mb_type(cabac, slice_hdr, &self.sstate); |
| 182 | mb_info.mb_type = mb_type; |
| 183 | mb_info.transform_size_8x8 = false; |
| 184 | if mb_type == MBType::PCM { |
| 185 | let ipcm_size = 256 + 64 + 64; |
| 186 | validate!(cabac.pos + ipcm_size <= cabac.src.len()); |
| 187 | self.ipcm_buf[..ipcm_size].copy_from_slice(&cabac.src[cabac.pos..][..ipcm_size]); |
| 188 | cabac.pos += ipcm_size; |
| 189 | cabac.reinit()?; |
| 190 | last_qp_diff = false; |
| 191 | } else { |
| 192 | if self.pps.transform_8x8_mode && mb_type == MBType::Intra4x4 { |
| 193 | let mut ctx = 0; |
| 194 | if self.sstate.get_top_mb().transform_8x8 { |
| 195 | ctx += 1; |
| 196 | } |
| 197 | if self.sstate.get_left_mb().transform_8x8 { |
| 198 | ctx += 1; |
| 199 | } |
| 200 | mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx); |
| 201 | if mb_info.transform_size_8x8 { |
| 202 | mb_type = MBType::Intra8x8; |
| 203 | mb_info.mb_type = MBType::Intra8x8; |
| 204 | } |
| 205 | } |
| 206 | decode_mb_pred_cabac(cabac, slice_hdr, mb_type, &mut self.sstate, &mut mb_info); |
| 207 | let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type { |
| 208 | (cbpy, cbpc) |
| 209 | } else { |
| 210 | decode_cbp_cabac(cabac, &self.sstate) |
| 211 | }; |
| 212 | if self.pps.transform_8x8_mode && cbpy != 0 && mb_info.can_have_8x8_tx(self.sps.direct_8x8_inference) { |
| 213 | let mut ctx = 0; |
| 214 | if self.sstate.get_top_mb().transform_8x8 { |
| 215 | ctx += 1; |
| 216 | } |
| 217 | if self.sstate.get_left_mb().transform_8x8 { |
| 218 | ctx += 1; |
| 219 | } |
| 220 | mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx); |
| 221 | } |
| 222 | if mb_type.is_intra() { |
| 223 | self.sstate.get_cur_mb().cmode = mb_info.chroma_ipred; |
| 224 | } |
| 225 | mb_info.cbpy = cbpy; |
| 226 | mb_info.cbpc = cbpc; |
| 227 | self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy; |
| 228 | if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() { |
| 229 | let mb_qp_delta = decode_mb_qp_delta_cabac(cabac, last_qp_diff as usize); |
| 230 | validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25); |
| 231 | last_qp_diff = mb_qp_delta != 0; |
| 232 | let new_qp = mb_qp_delta + i32::from(mb_info.qp_y); |
| 233 | mb_info.qp_y = if new_qp < 0 { |
| 234 | (new_qp + 52) as u8 |
| 235 | } else if new_qp >= 52 { |
| 236 | (new_qp - 52) as u8 |
| 237 | } else { |
| 238 | new_qp as u8 |
| 239 | }; |
| 240 | mb_info.coeffs = [[0; 16]; 25]; |
| 241 | if self.pps.transform_8x8_mode { |
| 242 | mb_info.clear_coeffs8x8(); |
| 243 | } |
| 244 | mb_info.chroma_dc = [[0; 4]; 2]; |
| 245 | decode_residual_cabac(cabac, &mut self.sstate, &mut mb_info); |
| 246 | } else { |
| 247 | last_qp_diff = false; |
| 248 | } |
| 249 | } |
| 250 | } else { |
| 251 | mb_info.mb_type = skip_type; |
| 252 | mb_info.transform_size_8x8 = false; |
| 253 | last_qp_diff = false; |
| 254 | } |
| 255 | self.handle_macroblock(slice_hdr, &mut mb_info, refs, frm)?; |
| 256 | prev_mb_skipped = mb_skip; |
| 257 | if !(self.is_mbaff && ((mb_idx & 1) == 0)) && cabac.decode_terminate() { |
| 258 | if let Ok(disp) = self.dispatch.read() { |
| 259 | disp.update_pos(self.cur_pic.full_id, mb_idx + 1); |
| 260 | } |
| 261 | return Ok(mb_idx + 1); |
| 262 | } |
| 263 | mb_idx += 1; |
| 264 | if let Ok(disp) = self.dispatch.read() { |
| 265 | disp.update_pos(self.cur_pic.full_id, mb_idx); |
| 266 | } |
| 267 | } |
| 268 | Err(DecoderError::InvalidData) |
| 269 | } |
| 270 | #[allow(clippy::cognitive_complexity)] |
| 271 | fn handle_macroblock(&mut self, slice_hdr: &SliceHeader, mb_info: &mut CurrentMBInfo, refs: &SimplifiedSliceRefs, frm: &mut NASimpleVideoFrame<u8>) -> DecoderResult<()> { |
| 272 | let qp_y = mb_info.qp_y; |
| 273 | let qpr = ((qp_y as i8) + self.pps.chroma_qp_index_offset).max(0).min(51) as usize; |
| 274 | let qp_u = CHROMA_QUANTS[qpr]; |
| 275 | let qpb = ((qp_y as i8) + self.pps.second_chroma_qp_index_offset).max(0).min(51) as usize; |
| 276 | let qp_v = CHROMA_QUANTS[qpb]; |
| 277 | |
| 278 | let tx_bypass = qp_y == 0 && self.sps.qpprime_y_zero_transform_bypass; |
| 279 | |
| 280 | self.sstate.get_cur_mb().mb_type = mb_info.mb_type.into(); |
| 281 | if mb_info.mb_type != MBType::PCM { |
| 282 | self.sstate.get_cur_mb().qp_y = qp_y; |
| 283 | self.sstate.get_cur_mb().qp_u = qp_u; |
| 284 | self.sstate.get_cur_mb().qp_v = qp_v; |
| 285 | self.sstate.get_cur_mb().transform_8x8 = mb_info.transform_size_8x8; |
| 286 | } |
| 287 | let has_dc = mb_info.mb_type.is_intra16x16() && mb_info.coded[24]; |
| 288 | if has_dc { |
| 289 | idct_luma_dc(&mut mb_info.coeffs[24], qp_y); |
| 290 | for i in 0..16 { |
| 291 | mb_info.coeffs[i][0] = mb_info.coeffs[24][i]; |
| 292 | } |
| 293 | } |
| 294 | if !mb_info.transform_size_8x8 { |
| 295 | let quant_dc = !mb_info.mb_type.is_intra16x16(); |
| 296 | if quant_dc { |
| 297 | for i in 0..16 { |
| 298 | if mb_info.coded[i] { |
| 299 | if !tx_bypass { |
| 300 | idct(&mut mb_info.coeffs[i], qp_y); |
| 301 | } |
| 302 | } else if has_dc { |
| 303 | if !tx_bypass { |
| 304 | idct_dc(&mut mb_info.coeffs[i], qp_y, quant_dc); |
| 305 | } |
| 306 | mb_info.coded[i] = true; |
| 307 | } |
| 308 | } |
| 309 | } else { |
| 310 | for i in 0..16 { |
| 311 | if mb_info.coded[i] { |
| 312 | if !tx_bypass { |
| 313 | idct_skip_dc(&mut mb_info.coeffs[i], qp_y); |
| 314 | } |
| 315 | } else if has_dc { |
| 316 | if !tx_bypass { |
| 317 | idct_dc(&mut mb_info.coeffs[i], qp_y, quant_dc); |
| 318 | } |
| 319 | mb_info.coded[i] = true; |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | } else { |
| 324 | for i in 0..4 { |
| 325 | if mb_info.coded[(i & 1) * 2 + (i & 2) * 4] && !tx_bypass { |
| 326 | dequant8x8(&mut mb_info.coeffs8x8[i].coeffs, &self.pps.scaling_list_8x8[!mb_info.mb_type.is_intra() as usize]); |
| 327 | idct8x8(&mut mb_info.coeffs8x8[i].coeffs, qp_y); |
| 328 | } |
| 329 | } |
| 330 | } |
| 331 | for chroma in 0..2 { |
| 332 | let qp_c = if chroma == 0 { qp_u } else { qp_v }; |
| 333 | if mb_info.cbpc != 0 { |
| 334 | chroma_dc_transform(&mut mb_info.chroma_dc[chroma], qp_c); |
| 335 | } |
| 336 | for i in 0..4 { |
| 337 | let blk_no = 16 + chroma * 4 + i; |
| 338 | mb_info.coeffs[blk_no][0] = mb_info.chroma_dc[chroma][i]; |
| 339 | if mb_info.coded[blk_no] { |
| 340 | idct_skip_dc(&mut mb_info.coeffs[blk_no], qp_c); |
| 341 | } else if mb_info.coeffs[blk_no][0] != 0 { |
| 342 | idct_dc(&mut mb_info.coeffs[blk_no], qp_c, false); |
| 343 | mb_info.coded[blk_no] = true; |
| 344 | } |
| 345 | } |
| 346 | } |
| 347 | if !self.pps.entropy_coding_mode || mb_info.mb_type.is_skip() || mb_info.mb_type.is_intra() { |
| 348 | self.sstate.reset_mb_mv(); |
| 349 | } |
| 350 | if !mb_info.mb_type.is_intra() { |
| 351 | let temporal_mv = !slice_hdr.direct_spatial_mv_pred; |
| 352 | let cur_id = self.cur_pic.full_id as u16; |
| 353 | // wait for the reference macroblock MV to be available |
| 354 | if matches!(mb_info.mb_type, MBType::Direct | MBType::BSkip | MBType::B8x8) { |
| 355 | if let Some(ref_id) = refs.get_ref_id(0, mb_info.ref_l1[0].index()) { |
| 356 | wait_for_mb(&self.dispatch, &self.sstate, self.sstate.mb_x * 16, self.sstate.mb_y * 16, ZERO_MV, ref_id)?; |
| 357 | } |
| 358 | } |
| 359 | Self::pred_mv(&mut self.sstate, refs, mb_info, cur_id, temporal_mv, self.sps.direct_8x8_inference); |
| 360 | } |
| 361 | if !self.pps.constrained_intra_pred && mb_info.mb_type != MBType::Intra4x4 && mb_info.mb_type != MBType::Intra8x8 { |
| 362 | self.sstate.fill_ipred(IntraPredMode::DC); |
| 363 | } |
| 364 | |
| 365 | let xpos = self.sstate.mb_x * 16; |
| 366 | let ypos = self.sstate.mb_y * 16; |
| 367 | if mb_info.mb_type != MBType::PCM { |
| 368 | let weight_mode = if self.pps.weighted_pred && slice_hdr.slice_type.is_p() { |
| 369 | 1 |
| 370 | } else if slice_hdr.slice_type.is_b() { |
| 371 | self.pps.weighted_bipred_idc |
| 372 | } else { |
| 373 | 0 |
| 374 | }; |
| 375 | recon_mb_mt(frm, slice_hdr, mb_info, &mut self.sstate, refs, &mut self.mc_dsp, weight_mode, &self.dispatch)?; |
| 376 | } else { |
| 377 | 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)) { |
| 378 | dline[..16].copy_from_slice(src); |
| 379 | } |
| 380 | 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)) { |
| 381 | dline[..8].copy_from_slice(src); |
| 382 | } |
| 383 | 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)) { |
| 384 | dline[..8].copy_from_slice(src); |
| 385 | } |
| 386 | } |
| 387 | self.sstate.save_ipred_context(frm); |
| 388 | |
| 389 | let mv_info = &mut self.cur_pic.mv_info; |
| 390 | let mb_pos = self.sstate.mb_x + self.sstate.mb_y * mv_info.mb_stride; |
| 391 | let mut mb = FrameMBInfo::new(); |
| 392 | mb.mb_type = mb_info.mb_type.into(); |
| 393 | for blk4 in 0..16 { |
| 394 | mb.mv[blk4] = self.sstate.get_cur_blk4(blk4).mv; |
| 395 | } |
| 396 | for blk8 in 0..4 { |
| 397 | mb.ref_poc[blk8] = refs.map_refs(self.sstate.get_cur_blk8(blk8).ref_idx); |
| 398 | mb.ref_idx[blk8] = self.sstate.get_cur_blk8(blk8).ref_idx; |
| 399 | } |
| 400 | mv_info.mbs[mb_pos] = mb; |
| 401 | |
| 402 | let deblock_mode = slice_hdr.disable_deblocking_filter_idc; |
| 403 | if !self.deblock_skip && deblock_mode != 1 { |
| 404 | let is_s = slice_hdr.slice_type == SliceType::SI || slice_hdr.slice_type == SliceType::SP; |
| 405 | self.sstate.fill_deblock(refs, deblock_mode, is_s); |
| 406 | let mut frm = NASimpleVideoFrame::from_video_buf(&mut self.cur_pic.buf).unwrap(); |
| 407 | let lf_alpha = slice_hdr.slice_alpha_c0_offset; |
| 408 | let lf_beta = slice_hdr.slice_beta_offset; |
| 409 | loop_filter_mb(&mut frm, &self.sstate, lf_alpha, lf_beta); |
| 410 | } |
| 411 | self.sstate.next_mb(); |
| 412 | Ok(()) |
| 413 | } |
| 414 | |
| 415 | fn pred_mv(sstate: &mut SliceState, frame_refs: &SimplifiedSliceRefs, mb_info: &mut CurrentMBInfo, cur_id: u16, temporal_mv: bool, direct_8x8: bool) { |
| 416 | let mb_type = mb_info.mb_type; |
| 417 | if !mb_type.is_4x4() { |
| 418 | let (pw, ph) = mb_type.size(); |
| 419 | let mut xoff = 0; |
| 420 | let mut yoff = 0; |
| 421 | if mb_type == MBType::Direct || mb_type == MBType::BSkip { |
| 422 | sstate.predict_direct_mb(frame_refs, temporal_mv, direct_8x8, cur_id); |
| 423 | } |
| 424 | for part in 0..mb_type.num_parts() { |
| 425 | if !mb_type.is_l1(part) { |
| 426 | match mb_type { |
| 427 | MBType::PSkip => sstate.predict_pskip(), |
| 428 | MBType::BSkip | MBType::Direct => { |
| 429 | }, |
| 430 | _ => { |
| 431 | sstate.predict(xoff, yoff, pw, ph, 0, |
| 432 | mb_info.mv_l0[part], mb_info.ref_l0[part]); |
| 433 | }, |
| 434 | }; |
| 435 | } |
| 436 | if !mb_type.is_l0(part) && mb_type != MBType::BSkip && mb_type != MBType::Direct { |
| 437 | sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part], mb_info.ref_l1[part]); |
| 438 | } |
| 439 | if pw != 16 { |
| 440 | xoff += pw; |
| 441 | } else { |
| 442 | yoff += ph; |
| 443 | } |
| 444 | } |
| 445 | } else { |
| 446 | for part in 0..4 { |
| 447 | let sub_type = mb_info.sub_mb_type[part]; |
| 448 | let mut xoff = (part & 1) * 8; |
| 449 | let mut yoff = (part & 2) * 4; |
| 450 | let orig_x = xoff; |
| 451 | let (pw, ph) = sub_type.size(); |
| 452 | for subpart in 0..sub_type.num_parts() { |
| 453 | if sub_type != SubMBType::Direct8x8 { |
| 454 | if !sub_type.is_l1() { |
| 455 | sstate.predict(xoff, yoff, pw, ph, 0, mb_info.mv_l0[part * 4 + subpart], mb_info.ref_l0[part]); |
| 456 | } |
| 457 | if !sub_type.is_l0() { |
| 458 | sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part * 4 + subpart], mb_info.ref_l1[part]); |
| 459 | } |
| 460 | } else { |
| 461 | for sblk in 0..4 { |
| 462 | sstate.predict_direct_sub(frame_refs, temporal_mv, direct_8x8, cur_id, (xoff / 4) + (sblk & 1) + (yoff / 4) * 4 + (sblk & 2) * 2); |
| 463 | } |
| 464 | } |
| 465 | xoff += pw; |
| 466 | if xoff == orig_x + 8 { |
| 467 | xoff -= 8; |
| 468 | yoff += ph; |
| 469 | } |
| 470 | } |
| 471 | } |
| 472 | } |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | struct H264MTDecoder { |
| 477 | info: NACodecInfoRef, |
| 478 | nal_len: u8, |
| 479 | dispatch: Shareable<ThreadDispatcher>, |
| 480 | frame_refs: FrameRefs, |
| 481 | skip_mode: FrameSkipMode, |
| 482 | sps: Vec<Arc<SeqParameterSet>>, |
| 483 | cur_sps: usize, |
| 484 | pps: Vec<Arc<PicParameterSet>>, |
| 485 | cur_pps: usize, |
| 486 | cur_fdec: Option<FrameDecoder>, |
| 487 | cavlc_cb: Arc<CAVLCTables>, |
| 488 | deblock_skip: bool, |
| 489 | max_last_poc: u32, |
| 490 | poc_base: u32, |
| 491 | avg_pool: NAVideoBufferPool<u8>, |
| 492 | } |
| 493 | |
| 494 | impl H264MTDecoder { |
| 495 | fn new() -> Self { |
| 496 | Self { |
| 497 | info: NACodecInfoRef::default(), |
| 498 | nal_len: 0, |
| 499 | dispatch: Arc::new(RwLock::new(ThreadDispatcher::new())), |
| 500 | frame_refs: FrameRefs::new(), |
| 501 | skip_mode: FrameSkipMode::default(), |
| 502 | sps: Vec::new(), |
| 503 | cur_sps: 0, |
| 504 | pps: Vec::new(), |
| 505 | cur_pps: 0, |
| 506 | cur_fdec: None, |
| 507 | cavlc_cb: Arc::new(CAVLCTables::new()), |
| 508 | deblock_skip: false, |
| 509 | max_last_poc: 0, |
| 510 | poc_base: 0, |
| 511 | avg_pool: NAVideoBufferPool::new(8), |
| 512 | } |
| 513 | } |
| 514 | fn handle_nal(&mut self, src: Vec<u8>, supp: &mut NADecoderSupport, skip_decoding: bool, user_id: u32, time: NATimeInfo) -> DecoderResult<()> { |
| 515 | validate!(!src.is_empty()); |
| 516 | validate!((src[0] & 0x80) == 0); |
| 517 | let nal_ref_idc = src[0] >> 5; |
| 518 | let nal_unit_type = src[0] & 0x1F; |
| 519 | |
| 520 | let mut full_size = src.len() * 8; |
| 521 | for &byte in src.iter().rev() { |
| 522 | if byte == 0 { |
| 523 | full_size -= 8; |
| 524 | } else { |
| 525 | full_size -= (byte.trailing_zeros() + 1) as usize; |
| 526 | break; |
| 527 | } |
| 528 | } |
| 529 | validate!(full_size > 0); |
| 530 | match nal_unit_type { |
| 531 | 1 | 5 if !skip_decoding => { |
| 532 | let is_idr = nal_unit_type == 5; |
| 533 | let mut br = BitReader::new(&src[..(full_size + 7)/8], BitReaderMode::BE); |
| 534 | br.skip(8)?; |
| 535 | |
| 536 | let slice_hdr = parse_slice_header(&mut br, self.sps.as_slice(), self.pps.as_slice(), is_idr, nal_ref_idc)?; |
| 537 | let hdr_size = br.tell(); |
| 538 | validate!(br.tell() < full_size); |
| 539 | let full_id; |
| 540 | if slice_hdr.first_mb_in_slice == 0 { |
| 541 | validate!(self.cur_fdec.is_none()); |
| 542 | for (i, pps) in self.pps.iter().enumerate() { |
| 543 | if pps.pic_parameter_set_id == slice_hdr.pic_parameter_set_id { |
| 544 | self.cur_pps = i; |
| 545 | break; |
| 546 | } |
| 547 | } |
| 548 | for (i, sps) in self.sps.iter().enumerate() { |
| 549 | if sps.seq_parameter_set_id == self.pps[self.cur_pps].seq_parameter_set_id { |
| 550 | self.cur_sps = i; |
| 551 | break; |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | 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; |
| 556 | if is_idr { |
| 557 | if cur_full_id <= self.max_last_poc { |
| 558 | self.poc_base = self.max_last_poc + 2 - (cur_full_id - self.poc_base); |
| 559 | cur_full_id = self.max_last_poc + 2; |
| 560 | } |
| 561 | } |
| 562 | self.max_last_poc = self.max_last_poc.max(cur_full_id); |
| 563 | full_id = cur_full_id; |
| 564 | |
| 565 | let sps = &self.sps[self.cur_sps]; |
| 566 | if sps.chroma_format_idc != 1 || sps.bit_depth_luma != 8 || sps.bit_depth_chroma != 8 { |
| 567 | println!(" chroma fmt {} bits {}/{}", sps.chroma_format_idc, sps.bit_depth_luma, sps.bit_depth_chroma); |
| 568 | return Err(DecoderError::NotImplemented); |
| 569 | } |
| 570 | |
| 571 | if is_idr { |
| 572 | self.frame_refs.clear_refs(); |
| 573 | } |
| 574 | |
| 575 | let width = sps.pic_width_in_mbs << 4; |
| 576 | let height = sps.pic_height_in_mbs << 4; |
| 577 | let num_mbs = sps.pic_width_in_mbs * sps.pic_height_in_mbs; |
| 578 | |
| 579 | let avg_buf = if let Some(buf) = self.avg_pool.get_free() { |
| 580 | buf |
| 581 | } else { |
| 582 | let new_avg_buf = alloc_video_buffer(AVG_BUF_VINFO, 4).unwrap().get_vbuf().unwrap(); |
| 583 | self.avg_pool.add_frame(new_avg_buf.clone()); |
| 584 | new_avg_buf |
| 585 | }; |
| 586 | let mut mc_dsp = H264MC::new(avg_buf); |
| 587 | mc_dsp.set_dimensions(width, height); |
| 588 | |
| 589 | let is_mbaff = sps.mb_adaptive_frame_field && !slice_hdr.field_pic; |
| 590 | if is_mbaff { |
| 591 | println!("MBAFF"); |
| 592 | return Err(DecoderError::NotImplemented); |
| 593 | } |
| 594 | if !sps.frame_mbs_only { |
| 595 | println!("PAFF?"); |
| 596 | return Err(DecoderError::NotImplemented); |
| 597 | } |
| 598 | |
| 599 | let cur_vinfo = supp.pool_u8.get_info(); |
| 600 | let tmp_vinfo = NAVideoInfo::new(width, height, false, YUV420_FORMAT); |
| 601 | if cur_vinfo != Some(tmp_vinfo) { |
| 602 | supp.pool_u8.reset(); |
| 603 | supp.pool_u8.prealloc_video(tmp_vinfo, 4)?; |
| 604 | } |
| 605 | |
| 606 | let buf = if let Some(pic) = supp.pool_u8.get_free() { |
| 607 | pic |
| 608 | } else { |
| 609 | if supp.pool_u8.get_num_used() > 256 { |
| 610 | return Err(DecoderError::AllocError); |
| 611 | } |
| 612 | if let Ok(nbuf) = alloc_video_buffer(tmp_vinfo, 4) { |
| 613 | let vbuf = nbuf.get_vbuf().unwrap(); |
| 614 | supp.pool_u8.add_frame(vbuf.clone()); |
| 615 | vbuf |
| 616 | } else { |
| 617 | return Err(DecoderError::AllocError); |
| 618 | } |
| 619 | }; |
| 620 | |
| 621 | let cur_pic = PictureInfo { |
| 622 | id: slice_hdr.frame_num, |
| 623 | full_id, user_id, time, |
| 624 | pic_type: slice_hdr.slice_type.to_frame_type(), |
| 625 | buf, |
| 626 | cur_mb: 0, |
| 627 | is_ref: nal_ref_idc != 0, |
| 628 | is_idr, |
| 629 | long_term: get_long_term_id(is_idr, &slice_hdr), |
| 630 | mv_info: NABufferRef::new(FrameMV::new(sps.pic_width_in_mbs, sps.pic_height_in_mbs)), |
| 631 | }; |
| 632 | |
| 633 | self.cur_fdec = Some(FrameDecoder{ |
| 634 | slices: Vec::new(), |
| 635 | sstate: SliceState::new(), |
| 636 | ipcm_buf: [0; 256 + 64 + 64], |
| 637 | //width, height, |
| 638 | num_mbs, |
| 639 | sps: Arc::clone(sps), |
| 640 | pps: Arc::clone(&self.pps[self.cur_pps]), |
| 641 | dispatch: Arc::clone(&self.dispatch), |
| 642 | cavlc_cb: Arc::clone(&self.cavlc_cb), |
| 643 | mc_dsp, |
| 644 | cur_pic, |
| 645 | is_mbaff, |
| 646 | deblock_skip: self.deblock_skip, |
| 647 | }); |
| 648 | } else { |
| 649 | if let Some(ref mut fdec) = self.cur_fdec { |
| 650 | let new_type = slice_hdr.slice_type.to_frame_type(); |
| 651 | let pic = &mut fdec.cur_pic; |
| 652 | pic.pic_type = match (pic.pic_type, new_type) { |
| 653 | (FrameType::I, _) => new_type, |
| 654 | (_, FrameType::B) => FrameType::B, |
| 655 | _ => pic.pic_type, |
| 656 | }; |
| 657 | full_id = pic.full_id; |
| 658 | } else { |
| 659 | return Ok(()); |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | let sps = &self.sps[self.cur_sps]; |
| 664 | |
| 665 | self.frame_refs.select_refs(sps, &slice_hdr, full_id); |
| 666 | |
| 667 | if slice_hdr.adaptive_ref_pic_marking_mode { |
| 668 | 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)?; |
| 669 | } |
| 670 | if let Some(ref mut fdec) = self.cur_fdec { |
| 671 | fdec.slices.push((slice_hdr, hdr_size, self.frame_refs.cur_refs.clone(), src)); |
| 672 | } |
| 673 | }, |
| 674 | 2 => { // slice data partition A |
| 675 | //slice header |
| 676 | //slice id = read_ue() |
| 677 | //cat 2 slice data (all but MB layer residual) |
| 678 | return Err(DecoderError::NotImplemented); |
| 679 | }, |
| 680 | 3 => { // slice data partition B |
| 681 | //slice id = read_ue() |
| 682 | //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() } |
| 683 | //cat 3 slice data (MB layer residual) |
| 684 | return Err(DecoderError::NotImplemented); |
| 685 | }, |
| 686 | 4 => { // slice data partition C |
| 687 | //slice id = read_ue() |
| 688 | //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() } |
| 689 | //cat 4 slice data (MB layer residual) |
| 690 | return Err(DecoderError::NotImplemented); |
| 691 | }, |
| 692 | 6 => {}, //SEI |
| 693 | 7 => { |
| 694 | let sps = parse_sps(&src[1..])?; |
| 695 | self.sps.push(Arc::new(sps)); |
| 696 | }, |
| 697 | 8 => { |
| 698 | validate!(full_size >= 8 + 16); |
| 699 | let pps = parse_pps(&src[1..], self.sps.as_slice(), full_size - 8)?; |
| 700 | let mut found = false; |
| 701 | for stored_pps in self.pps.iter_mut() { |
| 702 | if stored_pps.pic_parameter_set_id == pps.pic_parameter_set_id { |
| 703 | *stored_pps = Arc::clone(&pps); |
| 704 | found = true; |
| 705 | break; |
| 706 | } |
| 707 | } |
| 708 | if !found { |
| 709 | self.pps.push(pps); |
| 710 | } |
| 711 | }, |
| 712 | 9 => { // access unit delimiter |
| 713 | }, |
| 714 | 10 => {}, //end of sequence |
| 715 | 11 => {}, //end of stream |
| 716 | 12 => {}, //filler |
| 717 | _ => {}, |
| 718 | }; |
| 719 | |
| 720 | Ok(()) |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | impl NADecoderMT for H264MTDecoder { |
| 725 | fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef, nthreads: usize) -> DecoderResult<()> { |
| 726 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
| 727 | let fmt = YUV420_FORMAT; |
| 728 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, fmt)); |
| 729 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); |
| 730 | |
| 731 | let edata = info.get_extradata().unwrap(); |
| 732 | //print!("edata:"); for &el in edata.iter() { print!(" {:02X}", el); } println!(); |
| 733 | if edata.len() > 11 && &edata[0..4] == b"avcC" { |
| 734 | let mut mr = MemoryReader::new_read(edata.as_slice()); |
| 735 | let mut br = ByteReader::new(&mut mr); |
| 736 | |
| 737 | br.read_skip(4)?; |
| 738 | let version = br.read_byte()?; |
| 739 | validate!(version == 1); |
| 740 | let profile = br.read_byte()?; |
| 741 | let _compatibility = br.read_byte()?; |
| 742 | let _level = br.read_byte()?; |
| 743 | let b = br.read_byte()?; |
| 744 | validate!((b & 0xFC) == 0xFC); |
| 745 | self.nal_len = (b & 3) + 1; |
| 746 | let b = br.read_byte()?; |
| 747 | validate!((b & 0xE0) == 0xE0); |
| 748 | let num_sps = (b & 0x1F) as usize; |
| 749 | for _ in 0..num_sps { |
| 750 | let len = br.read_u16be()? as usize; |
| 751 | let offset = br.tell() as usize; |
| 752 | validate!((br.peek_byte()? & 0x1F) == 7); |
| 753 | let mut nal_buf = Vec::new(); |
| 754 | let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf); |
| 755 | self.handle_nal(nal_buf, supp, true, 0, NATimeInfo::new(None, None, None, 0, 0))?; |
| 756 | br.read_skip(len)?; |
| 757 | } |
| 758 | let num_pps = br.read_byte()? as usize; |
| 759 | for _ in 0..num_pps { |
| 760 | let len = br.read_u16be()? as usize; |
| 761 | let offset = br.tell() as usize; |
| 762 | validate!((br.peek_byte()? & 0x1F) == 8); |
| 763 | let mut nal_buf = Vec::new(); |
| 764 | let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf); |
| 765 | self.handle_nal(nal_buf, supp, true, 0, NATimeInfo::new(None, None, None, 0, 0))?; |
| 766 | br.read_skip(len)?; |
| 767 | } |
| 768 | if br.left() > 0 { |
| 769 | match profile { |
| 770 | 100 | 110 | 122 | 144 => { |
| 771 | let b = br.read_byte()?; |
| 772 | // some encoders put something different here |
| 773 | if (b & 0xFC) != 0xFC { |
| 774 | return Ok(()); |
| 775 | } |
| 776 | // b & 3 -> chroma format |
| 777 | let b = br.read_byte()?; |
| 778 | validate!((b & 0xF8) == 0xF8); |
| 779 | // b & 7 -> luma depth minus 8 |
| 780 | let b = br.read_byte()?; |
| 781 | validate!((b & 0xF8) == 0xF8); |
| 782 | // b & 7 -> chroma depth minus 8 |
| 783 | let num_spsext = br.read_byte()? as usize; |
| 784 | for _ in 0..num_spsext { |
| 785 | let len = br.read_u16be()? as usize; |
| 786 | // parse spsext |
| 787 | br.read_skip(len)?; |
| 788 | } |
| 789 | }, |
| 790 | _ => {}, |
| 791 | }; |
| 792 | } |
| 793 | } else { |
| 794 | return Err(DecoderError::NotImplemented); |
| 795 | } |
| 796 | |
| 797 | let mut width = vinfo.get_width(); |
| 798 | let mut height = vinfo.get_height(); |
| 799 | |
| 800 | if (width == 0 || height == 0) && !self.sps.is_empty() { |
| 801 | width = self.sps[0].pic_width_in_mbs * 16; |
| 802 | height = self.sps[0].pic_height_in_mbs * 16; |
| 803 | } |
| 804 | |
| 805 | let num_bufs = if !self.sps.is_empty() { |
| 806 | self.sps[0].num_ref_frames + 1 |
| 807 | } else { |
| 808 | 3 |
| 809 | }.max(16 + 1); |
| 810 | if let Ok(ref mut sd) = self.dispatch.write() { |
| 811 | sd.max_threads = nthreads; |
| 812 | } else { |
| 813 | return Err(DecoderError::Bug); |
| 814 | } |
| 815 | supp.pool_u8.set_dec_bufs(num_bufs + nthreads); |
| 816 | supp.pool_u8.prealloc_video(NAVideoInfo::new(width, height, false, fmt), 4)?; |
| 817 | |
| 818 | self.avg_pool.prealloc_video(AVG_BUF_VINFO, 4)?; |
| 819 | |
| 820 | Ok(()) |
| 821 | } else { |
| 822 | Err(DecoderError::InvalidData) |
| 823 | } |
| 824 | } |
| 825 | fn can_take_input(&mut self) -> bool { |
| 826 | if let Ok(ref sd) = self.dispatch.read() { |
| 827 | sd.can_decode_more() |
| 828 | } else { |
| 829 | false |
| 830 | } |
| 831 | } |
| 832 | fn queue_pkt(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket, user_id: u32) -> DecoderResult<bool> { |
| 833 | if !self.can_take_input() { |
| 834 | return Ok(false); |
| 835 | } |
| 836 | |
| 837 | let src = pkt.get_buffer(); |
| 838 | |
| 839 | let mut mr = MemoryReader::new_read(&src); |
| 840 | let mut br = ByteReader::new(&mut mr); |
| 841 | let mut nal_buf = Vec::with_capacity(src.len()); |
| 842 | |
| 843 | if self.nal_len > 0 { |
| 844 | let mut skip_decoding = false; |
| 845 | if self.skip_mode != FrameSkipMode::None { |
| 846 | let mut pic_type = FrameType::I; |
| 847 | let mut is_ref = false; |
| 848 | while br.left() > 0 { |
| 849 | let size = match self.nal_len { |
| 850 | 1 => br.read_byte()? as usize, |
| 851 | 2 => br.read_u16be()? as usize, |
| 852 | 3 => br.read_u24be()? as usize, |
| 853 | 4 => br.read_u32be()? as usize, |
| 854 | _ => unreachable!(), |
| 855 | }; |
| 856 | validate!(br.left() >= (size as i64)); |
| 857 | let offset = br.tell() as usize; |
| 858 | let size = unescape_nal(&src[offset..][..size], &mut nal_buf); |
| 859 | validate!(size > 0); |
| 860 | let nal_ref_idc = nal_buf[0] >> 5; |
| 861 | let nal_unit_type = nal_buf[0] & 0x1F; |
| 862 | if nal_unit_type == 1 || nal_unit_type == 5 { |
| 863 | let mut bitr = BitReader::new(&nal_buf[1..], BitReaderMode::BE); |
| 864 | let (first_mb, slice_type) = parse_slice_header_minimal(&mut bitr)?; |
| 865 | if first_mb == 0 && nal_ref_idc != 0 { |
| 866 | is_ref = true; |
| 867 | } |
| 868 | let new_type = slice_type.to_frame_type(); |
| 869 | pic_type = match (pic_type, new_type) { |
| 870 | (FrameType::I, _) => new_type, |
| 871 | (_, FrameType::B) => FrameType::B, |
| 872 | _ => pic_type, |
| 873 | }; |
| 874 | } |
| 875 | br.read_skip(size)?; |
| 876 | } |
| 877 | match self.skip_mode { |
| 878 | FrameSkipMode::IntraOnly => { |
| 879 | skip_decoding = pic_type != FrameType::I; |
| 880 | }, |
| 881 | FrameSkipMode::KeyframesOnly => { |
| 882 | if !is_ref { |
| 883 | skip_decoding = true; |
| 884 | } |
| 885 | }, |
| 886 | _ => {}, |
| 887 | }; |
| 888 | br.seek(SeekFrom::Start(0))?; |
| 889 | } |
| 890 | |
| 891 | let mut initial_ref_frames = Vec::new(); |
| 892 | self.frame_refs.fill_ref_nums(&mut initial_ref_frames); |
| 893 | |
| 894 | while br.left() > 0 { |
| 895 | let size = match self.nal_len { |
| 896 | 1 => br.read_byte()? as usize, |
| 897 | 2 => br.read_u16be()? as usize, |
| 898 | 3 => br.read_u24be()? as usize, |
| 899 | 4 => br.read_u32be()? as usize, |
| 900 | _ => unreachable!(), |
| 901 | }; |
| 902 | validate!(br.left() >= (size as i64)); |
| 903 | let offset = br.tell() as usize; |
| 904 | let mut cur_nal_buf = Vec::with_capacity(size); |
| 905 | let _size = unescape_nal(&src[offset..][..size], &mut cur_nal_buf); |
| 906 | self.handle_nal(cur_nal_buf, supp, skip_decoding, user_id, pkt.ts)?; |
| 907 | br.read_skip(size)?; |
| 908 | } |
| 909 | let mut fdec = None; |
| 910 | std::mem::swap(&mut fdec, &mut self.cur_fdec); |
| 911 | if let Some(fdc) = fdec { |
| 912 | let cpic = &fdc.cur_pic; |
| 913 | if cpic.is_ref { |
| 914 | self.frame_refs.add_short_term(cpic.clone(), self.sps[self.cur_sps].num_ref_frames); |
| 915 | } |
| 916 | if let Some(lt_idx) = cpic.long_term { |
| 917 | self.frame_refs.add_long_term(lt_idx, cpic.clone()); |
| 918 | } |
| 919 | let mut ref_frames = Vec::new(); |
| 920 | self.frame_refs.fill_ref_nums(&mut ref_frames); |
| 921 | queue_decoding(&mut self.dispatch, fdc, &initial_ref_frames, &ref_frames); |
| 922 | } |
| 923 | } else { |
| 924 | //todo NAL detection |
| 925 | unimplemented!(); |
| 926 | } |
| 927 | Ok(true) |
| 928 | } |
| 929 | fn has_output(&mut self) -> bool { |
| 930 | if let Ok(ref ds) = self.dispatch.read() { |
| 931 | ds.has_output() |
| 932 | } else { |
| 933 | panic!("can't peek into status"); |
| 934 | } |
| 935 | } |
| 936 | fn get_frame(&mut self) -> (DecoderResult<NAFrameRef>, u32) { |
| 937 | match wait_for_one(&mut self.dispatch) { |
| 938 | Ok(cpic) => { |
| 939 | let bufinfo = NABufferType::Video(cpic.buf.clone()); |
| 940 | let ftype = cpic.pic_type; |
| 941 | let dts = Some(u64::from(cpic.full_id)); |
| 942 | let mut frm = NAFrame::new(cpic.time, ftype, cpic.is_idr, self.info.clone(), bufinfo); |
| 943 | if let (Some(mydts), None) = (dts, frm.get_dts()) { |
| 944 | frm.set_dts(Some(mydts)); |
| 945 | } |
| 946 | frm.set_id(cpic.user_id as i64); |
| 947 | (Ok(frm.into_ref()), cpic.user_id) |
| 948 | }, |
| 949 | Err((err, id)) => (Err(err), id), |
| 950 | } |
| 951 | } |
| 952 | fn flush(&mut self) { |
| 953 | clear_threads(&mut self.dispatch); |
| 954 | self.frame_refs.clear_refs(); |
| 955 | } |
| 956 | } |
| 957 | |
| 958 | impl NAOptionHandler for H264MTDecoder { |
| 959 | fn get_supported_options(&self) -> &[NAOptionDefinition] { DECODER_OPTIONS } |
| 960 | fn set_options(&mut self, options: &[NAOption]) { |
| 961 | for option in options.iter() { |
| 962 | for opt_def in DECODER_OPTIONS.iter() { |
| 963 | if opt_def.check(option).is_ok() { |
| 964 | match (option.name, &option.value) { |
| 965 | (FRAME_SKIP_OPTION, NAValue::String(ref strval)) => { |
| 966 | if let Ok(smode) = FrameSkipMode::from_str(strval) { |
| 967 | self.skip_mode = smode; |
| 968 | } |
| 969 | }, |
| 970 | (DEBLOCK_SKIP_OPTION, NAValue::Bool(val)) => { |
| 971 | self.deblock_skip = *val; |
| 972 | }, |
| 973 | _ => {}, |
| 974 | } |
| 975 | } |
| 976 | } |
| 977 | } |
| 978 | } |
| 979 | fn query_option_value(&self, name: &str) -> Option<NAValue> { |
| 980 | match name { |
| 981 | FRAME_SKIP_OPTION => Some(NAValue::String(self.skip_mode.to_string())), |
| 982 | DEBLOCK_SKIP_OPTION => Some(NAValue::Bool(self.deblock_skip)), |
| 983 | _ => None, |
| 984 | } |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | pub fn get_decoder_mt() -> Box<dyn NADecoderMT + Send> { |
| 989 | Box::new(H264MTDecoder::new()) |
| 990 | } |