projects / nihav.git / blame
| Commit | Line | Data |
|---|---|---|
| 11d7aef2 KS |
1 | use nihav_core::codecs::*; |
| 2 | use nihav_core::io::bitreader::*; | |
| 3 | ||
| 4 | use super::*; | |
| 5 | use super::dispatch::*; | |
| 6 | ||
| cc818ce8 KS |
7 | const AVG_BUF_VINFO: NAVideoInfo = NAVideoInfo { width: 32, height: 32, flipped: false, format: YUV420_FORMAT, bits: 12 }; |
| 8 | ||
| 11d7aef2 KS |
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 | ||
| e6aaad5c | 62 | let mut mb_idx = slice_hdr.first_mb_in_slice; |
| 11d7aef2 KS |
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> { | |
| e6aaad5c | 156 | let mut mb_idx = slice_hdr.first_mb_in_slice; |
| 11d7aef2 KS |
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, | |
| cc818ce8 | 473 | avg_pool: NAVideoBufferPool<u8>, |
| 11d7aef2 KS |
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, | |
| cc818ce8 | 493 | avg_pool: NAVideoBufferPool::new(8), |
| 11d7aef2 KS |
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 | ||
| cc818ce8 KS |
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 | }; | |
| 11d7aef2 KS |
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() { | |
| e6aaad5c | 785 | self.sps[0].num_ref_frames + 1 |
| 11d7aef2 KS |
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 | ||
| cc818ce8 KS |
797 | self.avg_pool.prealloc_video(AVG_BUF_VINFO, 4)?; |
| 798 | ||
| 11d7aef2 KS |
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); | |
| f2cb96ff | 933 | self.frame_refs.clear_refs(); |
| 11d7aef2 KS |
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 | } |