| 1 | /* |
| 2 | known bugs and limitations: |
| 3 | * wrong slice boundary filtering |
| 4 | * not fully correct deblock strength selection for P/B-macroblocks |
| 5 | * scaling lists for 4x4 blocks |
| 6 | */ |
| 7 | use nihav_core::codecs::*; |
| 8 | use nihav_core::io::byteio::*; |
| 9 | use nihav_core::io::bitreader::*; |
| 10 | use nihav_core::io::intcode::*; |
| 11 | use nihav_codec_support::codecs::{MV, ZERO_MV}; |
| 12 | |
| 13 | mod types; |
| 14 | pub use types::*; |
| 15 | mod pic_ref; |
| 16 | pub use pic_ref::*; |
| 17 | #[allow(clippy::identity_op)] |
| 18 | #[allow(clippy::erasing_op)] |
| 19 | #[allow(clippy::many_single_char_names)] |
| 20 | #[allow(clippy::range_plus_one)] |
| 21 | mod dsp; |
| 22 | use dsp::*; |
| 23 | mod cabac; |
| 24 | use cabac::*; |
| 25 | mod cabac_coder; |
| 26 | use cabac_coder::*; |
| 27 | mod cavlc; |
| 28 | use cavlc::*; |
| 29 | mod loopfilter; |
| 30 | use loopfilter::*; |
| 31 | mod mb_recon; |
| 32 | use mb_recon::*; |
| 33 | mod sets; |
| 34 | use sets::*; |
| 35 | mod slice; |
| 36 | use slice::*; |
| 37 | |
| 38 | trait ReadUE { |
| 39 | fn read_ue(&mut self) -> DecoderResult<u32>; |
| 40 | fn read_te(&mut self, range: u32) -> DecoderResult<u32>; |
| 41 | fn read_ue_lim(&mut self, max_val: u32) -> DecoderResult<u32> { |
| 42 | let val = self.read_ue()?; |
| 43 | validate!(val <= max_val); |
| 44 | Ok(val) |
| 45 | } |
| 46 | fn read_se(&mut self) -> DecoderResult<i32> { |
| 47 | let val = self.read_ue()?; |
| 48 | if (val & 1) != 0 { |
| 49 | Ok (((val >> 1) as i32) + 1) |
| 50 | } else { |
| 51 | Ok (-((val >> 1) as i32)) |
| 52 | } |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | impl<'a> ReadUE for BitReader<'a> { |
| 57 | fn read_ue(&mut self) -> DecoderResult<u32> { |
| 58 | Ok(self.read_code(UintCodeType::GammaP)? - 1) |
| 59 | } |
| 60 | fn read_te(&mut self, range: u32) -> DecoderResult<u32> { |
| 61 | if range == 1 { |
| 62 | if self.read_bool()? { |
| 63 | Ok(0) |
| 64 | } else { |
| 65 | Ok(1) |
| 66 | } |
| 67 | } else { |
| 68 | let val = self.read_ue()?; |
| 69 | validate!(val <= range); |
| 70 | Ok(val) |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | #[derive(Clone,Copy)] |
| 76 | pub struct Coeff8x8 { |
| 77 | pub coeffs: [i16; 64], |
| 78 | } |
| 79 | |
| 80 | impl Coeff8x8 { |
| 81 | fn clear(&mut self) { |
| 82 | self.coeffs = [0; 64]; |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | impl Default for Coeff8x8 { |
| 87 | fn default() -> Self { |
| 88 | Self { |
| 89 | coeffs: [0; 64], |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | #[derive(Clone,Copy,Default)] |
| 95 | pub struct CurrentMBInfo { |
| 96 | pub mb_type: MBType, |
| 97 | pub sub_mb_type: [SubMBType; 4], |
| 98 | pub ipred: [IntraPredMode; 16], |
| 99 | pub chroma_ipred: u8, |
| 100 | pub luma_ipred: [u8; 16], |
| 101 | pub mv_l0: [MV; 16], |
| 102 | pub ref_l0: [PicRef; 4], |
| 103 | pub mv_l1: [MV; 16], |
| 104 | pub ref_l1: [PicRef; 4], |
| 105 | pub qp_y: u8, |
| 106 | pub cbpy: u8, |
| 107 | pub cbpc: u8, |
| 108 | pub coeffs: [[i16; 16]; 25], |
| 109 | pub coeffs8x8: [Coeff8x8; 4], |
| 110 | pub chroma_dc: [[i16; 4]; 2], |
| 111 | pub coded: [bool; 25], |
| 112 | pub transform_size_8x8: bool, |
| 113 | } |
| 114 | |
| 115 | impl CurrentMBInfo { |
| 116 | fn clear_coeffs8x8(&mut self) { |
| 117 | for c in self.coeffs8x8.iter_mut() { |
| 118 | c.clear(); |
| 119 | } |
| 120 | } |
| 121 | fn can_have_8x8_tx(&self, inference_flag: bool) -> bool { |
| 122 | match self.mb_type { |
| 123 | MBType::Intra4x4 | MBType::Intra8x8 | MBType::Intra16x16(_, _, _) | MBType::PCM => false, |
| 124 | MBType::P8x8 | MBType::P8x8Ref0 | MBType::B8x8 => { |
| 125 | for &sub_id in self.sub_mb_type.iter() { |
| 126 | match sub_id { |
| 127 | SubMBType::P8x8 | |
| 128 | SubMBType::B8x8(_) |
| 129 | => {}, |
| 130 | SubMBType::Direct8x8 |
| 131 | => if !inference_flag { return false; }, |
| 132 | _ => return false, |
| 133 | }; |
| 134 | } |
| 135 | true |
| 136 | }, |
| 137 | MBType::Direct => inference_flag, |
| 138 | _ => true, |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | fn get_long_term_id(is_idr: bool, slice_hdr: &SliceHeader) -> Option<usize> { |
| 144 | if is_idr && !slice_hdr.long_term_reference { |
| 145 | None |
| 146 | } else { |
| 147 | let marking = &slice_hdr.adaptive_ref_pic_marking; |
| 148 | for (&op, &arg) in marking.memory_management_control_op.iter().zip(marking.operation_arg.iter()).take(marking.num_ops) { |
| 149 | if op == 6 { |
| 150 | return Some(arg as usize); |
| 151 | } |
| 152 | } |
| 153 | None |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | struct H264Decoder { |
| 158 | info: NACodecInfoRef, |
| 159 | width: usize, |
| 160 | height: usize, |
| 161 | num_mbs: usize, |
| 162 | nal_len: u8, |
| 163 | sps: Vec<SeqParameterSet>, |
| 164 | cur_sps: usize, |
| 165 | pps: Vec<PicParameterSet>, |
| 166 | cur_pps: usize, |
| 167 | |
| 168 | skip_mode: FrameSkipMode, |
| 169 | deblock_skip: bool, |
| 170 | |
| 171 | is_mbaff: bool, |
| 172 | |
| 173 | cavlc_cb: CAVLCTables, |
| 174 | |
| 175 | sstate: SliceState, |
| 176 | |
| 177 | cur_pic: Option<PictureInfo>, |
| 178 | cur_id: u16, |
| 179 | has_pic: bool, |
| 180 | frame_refs: FrameRefs, |
| 181 | |
| 182 | temporal_mv: bool, |
| 183 | deblock_mode: u8, |
| 184 | lf_alpha: i8, |
| 185 | lf_beta: i8, |
| 186 | is_s: bool, |
| 187 | |
| 188 | ipcm_buf: [u8; 256 + 64 + 64], |
| 189 | |
| 190 | avg_buf: NAVideoBufferRef<u8>, |
| 191 | |
| 192 | transform_8x8_mode: bool, |
| 193 | } |
| 194 | |
| 195 | fn unescape_nal(src: &[u8], dst: &mut Vec<u8>) -> usize { |
| 196 | let mut off = 0; |
| 197 | let mut zrun = 0; |
| 198 | dst.clear(); |
| 199 | dst.reserve(src.len()); |
| 200 | while off < src.len() { |
| 201 | dst.push(src[off]); |
| 202 | if src[off] != 0 { |
| 203 | zrun = 0; |
| 204 | } else { |
| 205 | zrun += 1; |
| 206 | if zrun == 2 && off + 1 < src.len() && src[off + 1] == 0x03 { |
| 207 | zrun = 0; |
| 208 | off += 1; |
| 209 | } |
| 210 | if zrun >= 3 && off + 1 < src.len() && src[off + 1] == 0x01 { |
| 211 | off -= 3; |
| 212 | dst.truncate(off); |
| 213 | break; |
| 214 | } |
| 215 | } |
| 216 | off += 1; |
| 217 | } |
| 218 | off |
| 219 | } |
| 220 | |
| 221 | impl H264Decoder { |
| 222 | fn new() -> Self { |
| 223 | let avg_vi = NAVideoInfo { width: 32, height: 32, flipped: false, format: YUV420_FORMAT, bits: 12 }; |
| 224 | let avg_buf = alloc_video_buffer(avg_vi, 4).unwrap().get_vbuf().unwrap(); |
| 225 | H264Decoder{ |
| 226 | info: NACodecInfoRef::default(), |
| 227 | width: 0, |
| 228 | height: 0, |
| 229 | num_mbs: 0, |
| 230 | nal_len: 0, |
| 231 | sps: Vec::with_capacity(1), |
| 232 | cur_sps: 0, |
| 233 | pps: Vec::with_capacity(3), |
| 234 | cur_pps: 0, |
| 235 | |
| 236 | skip_mode: FrameSkipMode::default(), |
| 237 | deblock_skip: false, |
| 238 | |
| 239 | is_mbaff: false, |
| 240 | |
| 241 | cavlc_cb: CAVLCTables::new(), |
| 242 | |
| 243 | sstate: SliceState::new(), |
| 244 | cur_pic: None, |
| 245 | cur_id: 0, |
| 246 | has_pic: false, |
| 247 | frame_refs: FrameRefs::new(), |
| 248 | |
| 249 | temporal_mv: false, |
| 250 | deblock_mode: 0, |
| 251 | lf_alpha: 0, |
| 252 | lf_beta: 0, |
| 253 | is_s: false, |
| 254 | |
| 255 | ipcm_buf: [0; 256 + 64 + 64], |
| 256 | |
| 257 | avg_buf, |
| 258 | |
| 259 | transform_8x8_mode: false, |
| 260 | } |
| 261 | } |
| 262 | fn handle_nal(&mut self, src: &[u8], supp: &mut NADecoderSupport, skip_decoding: bool) -> DecoderResult<()> { |
| 263 | validate!(!src.is_empty()); |
| 264 | validate!((src[0] & 0x80) == 0); |
| 265 | let nal_ref_idc = src[0] >> 5; |
| 266 | let nal_unit_type = src[0] & 0x1F; |
| 267 | |
| 268 | let mut full_size = src.len() * 8; |
| 269 | for &byte in src.iter().rev() { |
| 270 | if byte == 0 { |
| 271 | full_size -= 8; |
| 272 | } else { |
| 273 | full_size -= (byte.trailing_zeros() + 1) as usize; |
| 274 | break; |
| 275 | } |
| 276 | } |
| 277 | validate!(full_size > 0); |
| 278 | match nal_unit_type { |
| 279 | 1 | 5 if !skip_decoding => { |
| 280 | let is_idr = nal_unit_type == 5; |
| 281 | let mut br = BitReader::new(&src[..(full_size + 7)/8], BitReaderMode::BE); |
| 282 | br.skip(8)?; |
| 283 | |
| 284 | let slice_hdr = parse_slice_header(&mut br, &self.sps, &self.pps, is_idr, nal_ref_idc)?; |
| 285 | validate!(br.tell() < full_size); |
| 286 | let full_id; |
| 287 | if slice_hdr.first_mb_in_slice == 0 { |
| 288 | validate!(self.cur_pic.is_none()); |
| 289 | for (i, pps) in self.pps.iter().enumerate() { |
| 290 | if pps.pic_parameter_set_id == slice_hdr.pic_parameter_set_id { |
| 291 | self.cur_pps = i; |
| 292 | break; |
| 293 | } |
| 294 | } |
| 295 | for (i, sps) in self.sps.iter().enumerate() { |
| 296 | if sps.seq_parameter_set_id == self.pps[self.cur_pps].seq_parameter_set_id { |
| 297 | self.cur_sps = i; |
| 298 | break; |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | full_id = self.frame_refs.calc_picture_num(&slice_hdr, is_idr, nal_ref_idc, &self.sps[self.cur_sps]); |
| 303 | |
| 304 | let sps = &self.sps[self.cur_sps]; |
| 305 | if sps.chroma_format_idc != 1 || sps.bit_depth_luma != 8 || sps.bit_depth_chroma != 8 { |
| 306 | println!(" chroma fmt {} bits {}/{}", sps.chroma_format_idc, sps.bit_depth_luma, sps.bit_depth_chroma); |
| 307 | return Err(DecoderError::NotImplemented); |
| 308 | } |
| 309 | //let pps = &self.pps[self.cur_pps]; |
| 310 | |
| 311 | if is_idr { |
| 312 | self.frame_refs.clear_refs(); |
| 313 | } |
| 314 | |
| 315 | self.width = sps.pic_width_in_mbs << 4; |
| 316 | self.height = sps.pic_height_in_mbs << 4; |
| 317 | self.num_mbs = sps.pic_width_in_mbs * sps.pic_height_in_mbs; |
| 318 | |
| 319 | self.is_mbaff = sps.mb_adaptive_frame_field && !slice_hdr.field_pic; |
| 320 | if self.is_mbaff { |
| 321 | println!("MBAFF"); |
| 322 | return Err(DecoderError::NotImplemented); |
| 323 | } |
| 324 | if !sps.frame_mbs_only { |
| 325 | println!("PAFF?"); |
| 326 | return Err(DecoderError::NotImplemented); |
| 327 | } |
| 328 | |
| 329 | //if slice_hdr.slice_type.is_b() { return Ok(()); } |
| 330 | self.cur_id = full_id as u16; |
| 331 | } else { |
| 332 | if let Some(ref mut pic) = self.cur_pic { |
| 333 | validate!(pic.cur_mb == slice_hdr.first_mb_in_slice); |
| 334 | let new_type = slice_hdr.slice_type.to_frame_type(); |
| 335 | pic.pic_type = match (pic.pic_type, new_type) { |
| 336 | (FrameType::I, _) => new_type, |
| 337 | (_, FrameType::B) => FrameType::B, |
| 338 | _ => pic.pic_type, |
| 339 | }; |
| 340 | full_id = pic.full_id; |
| 341 | } else { |
| 342 | return Ok(());//Err(DecoderError::InvalidData); |
| 343 | } |
| 344 | validate!(self.cur_pps < self.pps.len() && self.pps[self.cur_pps].pic_parameter_set_id == slice_hdr.pic_parameter_set_id); |
| 345 | } |
| 346 | |
| 347 | let sps = &self.sps[self.cur_sps]; |
| 348 | let pps = &self.pps[self.cur_pps]; |
| 349 | |
| 350 | self.temporal_mv = !slice_hdr.direct_spatial_mv_pred; |
| 351 | self.is_s = slice_hdr.slice_type == SliceType::SI || slice_hdr.slice_type == SliceType::SP; |
| 352 | self.deblock_mode = slice_hdr.disable_deblocking_filter_idc; |
| 353 | self.lf_alpha = slice_hdr.slice_alpha_c0_offset; |
| 354 | self.lf_beta = slice_hdr.slice_beta_offset; |
| 355 | |
| 356 | self.frame_refs.select_refs(sps, &slice_hdr, full_id); |
| 357 | |
| 358 | if slice_hdr.adaptive_ref_pic_marking_mode { |
| 359 | 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)?; |
| 360 | } |
| 361 | if slice_hdr.first_mb_in_slice == 0 { |
| 362 | let ret = supp.pool_u8.get_free(); |
| 363 | if ret.is_none() { |
| 364 | return Err(DecoderError::AllocError); |
| 365 | } |
| 366 | let tmp_vinfo = NAVideoInfo::new(self.width, self.height, false, YUV420_FORMAT); |
| 367 | let mut buf = ret.unwrap(); |
| 368 | if buf.get_info() != tmp_vinfo { |
| 369 | supp.pool_u8.reset(); |
| 370 | supp.pool_u8.prealloc_video(tmp_vinfo, 4)?; |
| 371 | let ret = supp.pool_u8.get_free(); |
| 372 | if ret.is_none() { |
| 373 | return Err(DecoderError::AllocError); |
| 374 | } |
| 375 | buf = ret.unwrap(); |
| 376 | } |
| 377 | self.cur_pic = Some(PictureInfo { |
| 378 | id: slice_hdr.frame_num, |
| 379 | full_id, |
| 380 | pic_type: slice_hdr.slice_type.to_frame_type(), |
| 381 | buf, |
| 382 | cur_mb: 0, |
| 383 | is_ref: nal_ref_idc != 0, |
| 384 | long_term: get_long_term_id(is_idr, &slice_hdr), |
| 385 | mv_info: FrameMV::new(sps.pic_width_in_mbs, sps.pic_height_in_mbs), |
| 386 | }); |
| 387 | } |
| 388 | |
| 389 | self.transform_8x8_mode = pps.transform_8x8_mode; |
| 390 | |
| 391 | self.sstate.reset(sps.pic_width_in_mbs, sps.pic_height_in_mbs, slice_hdr.first_mb_in_slice); |
| 392 | if !pps.entropy_coding_mode { |
| 393 | self.has_pic = self.decode_slice_cavlc(&mut br, &slice_hdr, full_size)?; |
| 394 | } else { |
| 395 | br.align(); |
| 396 | let start = (br.tell() / 8) as usize; |
| 397 | let csrc = &src[start..]; |
| 398 | validate!(csrc.len() >= 2); |
| 399 | let mut cabac = CABAC::new(csrc, slice_hdr.slice_type, slice_hdr.slice_qp, slice_hdr.cabac_init_idc as usize)?; |
| 400 | self.has_pic = self.decode_slice_cabac(&mut cabac, &slice_hdr)?; |
| 401 | } |
| 402 | }, |
| 403 | 2 => { // slice data partition A |
| 404 | //slice header |
| 405 | //slice id = read_ue() |
| 406 | //cat 2 slice data (all but MB layer residual) |
| 407 | return Err(DecoderError::NotImplemented); |
| 408 | }, |
| 409 | 3 => { // slice data partition B |
| 410 | //slice id = read_ue() |
| 411 | //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() } |
| 412 | //cat 3 slice data (MB layer residual) |
| 413 | return Err(DecoderError::NotImplemented); |
| 414 | }, |
| 415 | 4 => { // slice data partition C |
| 416 | //slice id = read_ue() |
| 417 | //if pps.redundant_pic_cnt_present { redundant_pic_cnt = read_ue() } |
| 418 | //cat 4 slice data (MB layer residual) |
| 419 | return Err(DecoderError::NotImplemented); |
| 420 | }, |
| 421 | 6 => {}, //SEI |
| 422 | 7 => { |
| 423 | let sps = parse_sps(&src[1..])?; |
| 424 | self.sps.push(sps); |
| 425 | }, |
| 426 | 8 => { |
| 427 | validate!(full_size >= 8 + 16); |
| 428 | let pps = parse_pps(&src[1..], &self.sps, full_size - 8)?; |
| 429 | let mut found = false; |
| 430 | for stored_pps in self.pps.iter_mut() { |
| 431 | if stored_pps.pic_parameter_set_id == pps.pic_parameter_set_id { |
| 432 | *stored_pps = pps.clone(); |
| 433 | found = true; |
| 434 | break; |
| 435 | } |
| 436 | } |
| 437 | if !found { |
| 438 | self.pps.push(pps); |
| 439 | } |
| 440 | }, |
| 441 | 9 => { // access unit delimiter |
| 442 | }, |
| 443 | 10 => {}, //end of sequence |
| 444 | 11 => {}, //end of stream |
| 445 | 12 => {}, //filler |
| 446 | _ => {}, |
| 447 | }; |
| 448 | |
| 449 | Ok(()) |
| 450 | } |
| 451 | fn pred_mv(sstate: &mut SliceState, frame_refs: &FrameRefs, mb_info: &mut CurrentMBInfo, cur_id: u16, temporal_mv: bool, direct_8x8: bool) { |
| 452 | let mb_type = mb_info.mb_type; |
| 453 | if !mb_type.is_4x4() { |
| 454 | let (pw, ph) = mb_type.size(); |
| 455 | let mut xoff = 0; |
| 456 | let mut yoff = 0; |
| 457 | if mb_type == MBType::Direct || mb_type == MBType::BSkip { |
| 458 | sstate.predict_direct_mb(frame_refs, temporal_mv, direct_8x8, cur_id); |
| 459 | } |
| 460 | for part in 0..mb_type.num_parts() { |
| 461 | if !mb_type.is_l1(part) { |
| 462 | match mb_type { |
| 463 | MBType::PSkip => sstate.predict_pskip(), |
| 464 | MBType::BSkip | MBType::Direct => { |
| 465 | }, |
| 466 | _ => { |
| 467 | sstate.predict(xoff, yoff, pw, ph, 0, |
| 468 | mb_info.mv_l0[part], mb_info.ref_l0[part]); |
| 469 | }, |
| 470 | }; |
| 471 | } |
| 472 | if !mb_type.is_l0(part) && mb_type != MBType::BSkip && mb_type != MBType::Direct { |
| 473 | sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part], mb_info.ref_l1[part]); |
| 474 | } |
| 475 | if pw != 16 { |
| 476 | xoff += pw; |
| 477 | } else { |
| 478 | yoff += ph; |
| 479 | } |
| 480 | } |
| 481 | } else { |
| 482 | for part in 0..4 { |
| 483 | let sub_type = mb_info.sub_mb_type[part]; |
| 484 | let mut xoff = (part & 1) * 8; |
| 485 | let mut yoff = (part & 2) * 4; |
| 486 | let orig_x = xoff; |
| 487 | let (pw, ph) = sub_type.size(); |
| 488 | for subpart in 0..sub_type.num_parts() { |
| 489 | if sub_type != SubMBType::Direct8x8 { |
| 490 | if !sub_type.is_l1() { |
| 491 | sstate.predict(xoff, yoff, pw, ph, 0, mb_info.mv_l0[part * 4 + subpart], mb_info.ref_l0[part]); |
| 492 | } |
| 493 | if !sub_type.is_l0() { |
| 494 | sstate.predict(xoff, yoff, pw, ph, 1, mb_info.mv_l1[part * 4 + subpart], mb_info.ref_l1[part]); |
| 495 | } |
| 496 | } else { |
| 497 | for sblk in 0..4 { |
| 498 | sstate.predict_direct_sub(frame_refs, temporal_mv, direct_8x8, cur_id, (xoff / 4) + (sblk & 1) + (yoff / 4) * 4 + (sblk & 2) * 2); |
| 499 | } |
| 500 | } |
| 501 | xoff += pw; |
| 502 | if xoff == orig_x + 8 { |
| 503 | xoff -= 8; |
| 504 | yoff += ph; |
| 505 | } |
| 506 | } |
| 507 | } |
| 508 | } |
| 509 | } |
| 510 | #[allow(clippy::cognitive_complexity)] |
| 511 | fn handle_macroblock(&mut self, slice_hdr: &SliceHeader, mb_info: &mut CurrentMBInfo) { |
| 512 | let pps = &self.pps[self.cur_pps]; |
| 513 | |
| 514 | let qp_y = mb_info.qp_y; |
| 515 | let qpr = ((qp_y as i8) + pps.chroma_qp_index_offset).max(0).min(51) as usize; |
| 516 | let qp_u = CHROMA_QUANTS[qpr]; |
| 517 | let qpb = ((qp_y as i8) + pps.second_chroma_qp_index_offset).max(0).min(51) as usize; |
| 518 | let qp_v = CHROMA_QUANTS[qpb]; |
| 519 | |
| 520 | let tx_bypass = qp_y == 0 && self.sps[self.cur_sps].qpprime_y_zero_transform_bypass; |
| 521 | |
| 522 | self.sstate.get_cur_mb().mb_type = mb_info.mb_type.into(); |
| 523 | if mb_info.mb_type != MBType::PCM { |
| 524 | self.sstate.get_cur_mb().qp_y = qp_y; |
| 525 | self.sstate.get_cur_mb().qp_u = qp_u; |
| 526 | self.sstate.get_cur_mb().qp_v = qp_v; |
| 527 | self.sstate.get_cur_mb().transform_8x8 = mb_info.transform_size_8x8; |
| 528 | } |
| 529 | let has_dc = mb_info.mb_type.is_intra16x16() && mb_info.coded[24]; |
| 530 | if has_dc { |
| 531 | idct_luma_dc(&mut mb_info.coeffs[24], qp_y); |
| 532 | for i in 0..16 { |
| 533 | mb_info.coeffs[i][0] = mb_info.coeffs[24][i]; |
| 534 | } |
| 535 | } |
| 536 | if !mb_info.transform_size_8x8 { |
| 537 | let quant_dc = !mb_info.mb_type.is_intra16x16(); |
| 538 | for i in 0..16 { |
| 539 | if mb_info.coded[i] { |
| 540 | if !tx_bypass { |
| 541 | idct(&mut mb_info.coeffs[i], qp_y, quant_dc); |
| 542 | } |
| 543 | } else if has_dc { |
| 544 | if !tx_bypass { |
| 545 | idct_dc(&mut mb_info.coeffs[i], qp_y, quant_dc); |
| 546 | } |
| 547 | mb_info.coded[i] = true; |
| 548 | } |
| 549 | } |
| 550 | } else { |
| 551 | for i in 0..4 { |
| 552 | if mb_info.coded[(i & 1) * 2 + (i & 2) * 4] && !tx_bypass { |
| 553 | dequant8x8(&mut mb_info.coeffs8x8[i].coeffs, &pps.scaling_list_8x8[!mb_info.mb_type.is_intra() as usize]); |
| 554 | idct8x8(&mut mb_info.coeffs8x8[i].coeffs, qp_y); |
| 555 | } |
| 556 | } |
| 557 | } |
| 558 | for chroma in 0..2 { |
| 559 | let qp_c = if chroma == 0 { qp_u } else { qp_v }; |
| 560 | if mb_info.cbpc != 0 { |
| 561 | chroma_dc_transform(&mut mb_info.chroma_dc[chroma], qp_c); |
| 562 | } |
| 563 | for i in 0..4 { |
| 564 | let blk_no = 16 + chroma * 4 + i; |
| 565 | mb_info.coeffs[blk_no][0] = mb_info.chroma_dc[chroma][i]; |
| 566 | if mb_info.coded[blk_no] { |
| 567 | idct(&mut mb_info.coeffs[blk_no], qp_c, false); |
| 568 | } else if mb_info.coeffs[blk_no][0] != 0 { |
| 569 | idct_dc(&mut mb_info.coeffs[blk_no], qp_c, false); |
| 570 | mb_info.coded[blk_no] = true; |
| 571 | } |
| 572 | } |
| 573 | } |
| 574 | if !pps.entropy_coding_mode || mb_info.mb_type.is_skip() || mb_info.mb_type.is_intra() { |
| 575 | self.sstate.reset_mb_mv(); |
| 576 | } |
| 577 | if !mb_info.mb_type.is_intra() { |
| 578 | Self::pred_mv(&mut self.sstate, &self.frame_refs, mb_info, self.cur_id, self.temporal_mv, self.sps[self.cur_sps].direct_8x8_inference); |
| 579 | } |
| 580 | if !pps.constrained_intra_pred && mb_info.mb_type != MBType::Intra4x4 && mb_info.mb_type != MBType::Intra8x8 { |
| 581 | self.sstate.fill_ipred(IntraPredMode::DC); |
| 582 | } |
| 583 | |
| 584 | let xpos = self.sstate.mb_x * 16; |
| 585 | let ypos = self.sstate.mb_y * 16; |
| 586 | if let Some(ref mut pic) = self.cur_pic { |
| 587 | let mut frm = NASimpleVideoFrame::from_video_buf(&mut pic.buf).unwrap(); |
| 588 | if mb_info.mb_type != MBType::PCM { |
| 589 | let weight_mode = if self.pps[self.cur_pps].weighted_pred && slice_hdr.slice_type.is_p() { |
| 590 | 1 |
| 591 | } else if slice_hdr.slice_type.is_b() { |
| 592 | self.pps[self.cur_pps].weighted_bipred_idc |
| 593 | } else { |
| 594 | 0 |
| 595 | }; |
| 596 | recon_mb(&mut frm, slice_hdr, &mb_info, &mut self.sstate, &self.frame_refs, &mut self.avg_buf, weight_mode); |
| 597 | } else { |
| 598 | 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)) { |
| 599 | dline[..16].copy_from_slice(src); |
| 600 | } |
| 601 | 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)) { |
| 602 | dline[..8].copy_from_slice(src); |
| 603 | } |
| 604 | 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)) { |
| 605 | dline[..8].copy_from_slice(src); |
| 606 | } |
| 607 | } |
| 608 | /*match mb_info.mb_type { |
| 609 | MBType::BSkip | MBType::Direct | MBType::B16x16(_) | MBType::B16x8(_, _) | MBType::B8x16(_, _) | MBType::B8x8 => { |
| 610 | let dstride = frm.stride[0]; |
| 611 | let dst = &mut frm.data[frm.offset[0] + self.sstate.mb_x * 16 + self.sstate.mb_y * 16 * dstride..]; |
| 612 | for el in dst[..16].iter_mut() { *el = 255; } |
| 613 | for row in dst.chunks_mut(dstride).skip(1).take(15) { |
| 614 | row[0] = 255; |
| 615 | } |
| 616 | }, |
| 617 | _ => {}, |
| 618 | };*/ |
| 619 | self.sstate.save_ipred_context(&frm); |
| 620 | } |
| 621 | if let Some(ref mut pic) = self.cur_pic { |
| 622 | let mv_info = &mut pic.mv_info; |
| 623 | let mb_pos = self.sstate.mb_x + self.sstate.mb_y * mv_info.mb_stride; |
| 624 | let mut mb = FrameMBInfo::new(); |
| 625 | mb.mb_type = mb_info.mb_type.into(); |
| 626 | for blk4 in 0..16 { |
| 627 | mb.mv[blk4] = self.sstate.get_cur_blk4(blk4).mv; |
| 628 | } |
| 629 | for blk8 in 0..4 { |
| 630 | mb.ref_poc[blk8] = self.frame_refs.map_refs(self.sstate.get_cur_blk8(blk8).ref_idx); |
| 631 | mb.ref_idx[blk8] = self.sstate.get_cur_blk8(blk8).ref_idx; |
| 632 | } |
| 633 | mv_info.mbs[mb_pos] = mb; |
| 634 | } |
| 635 | if !self.deblock_skip && self.deblock_mode != 1 { |
| 636 | self.sstate.fill_deblock(&self.frame_refs, self.deblock_mode, self.is_s); |
| 637 | if let Some(ref mut pic) = self.cur_pic { |
| 638 | let mut frm = NASimpleVideoFrame::from_video_buf(&mut pic.buf).unwrap(); |
| 639 | loop_filter_mb(&mut frm, &self.sstate, self.lf_alpha, self.lf_beta); |
| 640 | } |
| 641 | } |
| 642 | self.sstate.next_mb(); |
| 643 | } |
| 644 | fn decode_slice_cavlc(&mut self, br: &mut BitReader, slice_hdr: &SliceHeader, full_size: usize) -> DecoderResult<bool> { |
| 645 | const INTRA_CBP: [u8; 48] = [ |
| 646 | 47, 31, 15, 0, 23, 27, 29, 30, 7, 11, 13, 14, 39, 43, 45, 46, |
| 647 | 16, 3, 5, 10, 12, 19, 21, 26, 28, 35, 37, 42, 44, 1, 2, 4, |
| 648 | 8, 17, 18, 20, 24, 6, 9, 22, 25, 32, 33, 34, 36, 40, 38, 41 |
| 649 | ]; |
| 650 | const INTER_CBP: [u8; 48] = [ |
| 651 | 0, 16, 1, 2, 4, 8, 32, 3, 5, 10, 12, 15, 47, 7, 11, 13, |
| 652 | 14, 6, 9, 31, 35, 37, 42, 44, 33, 34, 36, 40, 39, 43, 45, 46, |
| 653 | 17, 18, 20, 24, 19, 21, 26, 28, 23, 27, 29, 30, 22, 25, 38, 41 |
| 654 | ]; |
| 655 | |
| 656 | let mut mb_idx = slice_hdr.first_mb_in_slice as usize; |
| 657 | let mut mb_info = CurrentMBInfo::default(); |
| 658 | mb_info.qp_y = slice_hdr.slice_qp; |
| 659 | let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip }; |
| 660 | while br.tell() < full_size && mb_idx < self.num_mbs { |
| 661 | mb_info.coded = [false; 25]; |
| 662 | mb_info.ref_l0 = [ZERO_REF; 4]; |
| 663 | mb_info.ref_l1 = [ZERO_REF; 4]; |
| 664 | mb_info.mv_l0 = [ZERO_MV; 16]; |
| 665 | mb_info.mv_l1 = [ZERO_MV; 16]; |
| 666 | mb_info.chroma_dc = [[0; 4]; 2]; |
| 667 | mb_info.cbpy = 0; |
| 668 | mb_info.cbpc = 0; |
| 669 | |
| 670 | if !slice_hdr.slice_type.is_intra() { |
| 671 | let mb_skip_run = br.read_ue()? as usize; |
| 672 | validate!(mb_idx + mb_skip_run <= self.num_mbs); |
| 673 | mb_info.mb_type = skip_type; |
| 674 | for _ in 0..mb_skip_run { |
| 675 | self.handle_macroblock(slice_hdr, &mut mb_info); |
| 676 | mb_idx += 1; |
| 677 | } |
| 678 | if mb_idx == self.num_mbs || br.tell() >= full_size { |
| 679 | break; |
| 680 | } |
| 681 | } |
| 682 | if br.tell() < full_size { |
| 683 | if self.is_mbaff && ((mb_idx & 1) == 0) { |
| 684 | let _mb_field_decoding = br.read_bool()?; |
| 685 | } |
| 686 | let mut mb_type = decode_mb_type_cavlc(br, slice_hdr)?; |
| 687 | mb_info.mb_type = mb_type; |
| 688 | mb_info.transform_size_8x8 = false; |
| 689 | if mb_type == MBType::PCM { |
| 690 | br.align(); |
| 691 | for pix in self.ipcm_buf[..256 + 64 + 64].iter_mut() { |
| 692 | *pix = br.read(8)? as u8; |
| 693 | } |
| 694 | self.sstate.fill_ncoded(16); |
| 695 | } else { |
| 696 | if self.transform_8x8_mode && mb_type == MBType::Intra4x4 { |
| 697 | mb_info.transform_size_8x8 = br.read_bool()?; |
| 698 | if mb_info.transform_size_8x8 { |
| 699 | mb_type = MBType::Intra8x8; |
| 700 | mb_info.mb_type = MBType::Intra8x8; |
| 701 | } |
| 702 | } |
| 703 | decode_mb_pred_cavlc(br, slice_hdr, mb_type, &mut self.sstate, &mut mb_info)?; |
| 704 | let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type { |
| 705 | (cbpy, cbpc) |
| 706 | } else { |
| 707 | let cbp_id = br.read_ue()? as usize; |
| 708 | validate!(cbp_id < INTRA_CBP.len()); |
| 709 | let cbp = if mb_type == MBType::Intra4x4 || mb_type == MBType::Intra8x8 { |
| 710 | INTRA_CBP[cbp_id] |
| 711 | } else { |
| 712 | INTER_CBP[cbp_id] |
| 713 | }; |
| 714 | if self.transform_8x8_mode && (cbp & 0xF) != 0 && mb_info.can_have_8x8_tx(self.sps[self.cur_sps].direct_8x8_inference) { |
| 715 | mb_info.transform_size_8x8 = br.read_bool()?; |
| 716 | } |
| 717 | ((cbp & 0xF), (cbp >> 4)) |
| 718 | }; |
| 719 | mb_info.cbpy = cbpy; |
| 720 | mb_info.cbpc = cbpc; |
| 721 | self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy; |
| 722 | if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() { |
| 723 | let mb_qp_delta = br.read_se()?; |
| 724 | validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25); |
| 725 | let new_qp = mb_qp_delta + i32::from(mb_info.qp_y); |
| 726 | mb_info.qp_y = if new_qp < 0 { |
| 727 | (new_qp + 52) as u8 |
| 728 | } else if new_qp >= 52 { |
| 729 | (new_qp - 52) as u8 |
| 730 | } else { |
| 731 | new_qp as u8 |
| 732 | }; |
| 733 | mb_info.coeffs = [[0; 16]; 25]; |
| 734 | if self.transform_8x8_mode { |
| 735 | mb_info.clear_coeffs8x8(); |
| 736 | } |
| 737 | mb_info.chroma_dc = [[0; 4]; 2]; |
| 738 | decode_residual_cavlc(br, &mut self.sstate, &mut mb_info, &self.cavlc_cb)?; |
| 739 | } |
| 740 | } |
| 741 | self.handle_macroblock(slice_hdr, &mut mb_info); |
| 742 | } |
| 743 | mb_idx += 1; |
| 744 | } |
| 745 | if let Some(ref mut pic) = self.cur_pic { |
| 746 | pic.cur_mb = mb_idx; |
| 747 | } |
| 748 | Ok(mb_idx == self.num_mbs) |
| 749 | } |
| 750 | fn decode_slice_cabac(&mut self, cabac: &mut CABAC, slice_hdr: &SliceHeader) -> DecoderResult<bool> { |
| 751 | let mut mb_idx = slice_hdr.first_mb_in_slice as usize; |
| 752 | let mut prev_mb_skipped = false; |
| 753 | let skip_type = if slice_hdr.slice_type.is_p() { MBType::PSkip } else { MBType::BSkip }; |
| 754 | let mut last_qp_diff = false; |
| 755 | |
| 756 | let mut mb_info = CurrentMBInfo::default(); |
| 757 | mb_info.qp_y = slice_hdr.slice_qp; |
| 758 | |
| 759 | while mb_idx < self.num_mbs { |
| 760 | mb_info.coded = [false; 25]; |
| 761 | mb_info.ref_l0 = [ZERO_REF; 4]; |
| 762 | mb_info.ref_l1 = [ZERO_REF; 4]; |
| 763 | mb_info.mv_l0 = [ZERO_MV; 16]; |
| 764 | mb_info.mv_l1 = [ZERO_MV; 16]; |
| 765 | mb_info.chroma_dc = [[0; 4]; 2]; |
| 766 | mb_info.cbpy = 0; |
| 767 | mb_info.cbpc = 0; |
| 768 | let mb_skip = cabac_decode_mbskip(cabac, &self.sstate, slice_hdr); |
| 769 | if !mb_skip { |
| 770 | if self.is_mbaff && (((mb_idx & 1) == 0) || (prev_mb_skipped && ((mb_idx & 1) == 1))) { |
| 771 | let _mb_field_decoding = cabac.decode_bit(70); |
| 772 | } |
| 773 | let mut mb_type = cabac_decode_mb_type(cabac, &slice_hdr, &self.sstate); |
| 774 | mb_info.mb_type = mb_type; |
| 775 | mb_info.transform_size_8x8 = false; |
| 776 | if mb_type == MBType::PCM { |
| 777 | let ipcm_size = 256 + 64 + 64; |
| 778 | validate!(cabac.pos + ipcm_size <= cabac.src.len()); |
| 779 | self.ipcm_buf[..ipcm_size].copy_from_slice(&cabac.src[cabac.pos..][..ipcm_size]); |
| 780 | cabac.pos += ipcm_size; |
| 781 | cabac.reinit()?; |
| 782 | last_qp_diff = false; |
| 783 | } else { |
| 784 | if self.transform_8x8_mode && mb_type == MBType::Intra4x4 { |
| 785 | let mut ctx = 0; |
| 786 | if self.sstate.get_top_mb().transform_8x8 { |
| 787 | ctx += 1; |
| 788 | } |
| 789 | if self.sstate.get_left_mb().transform_8x8 { |
| 790 | ctx += 1; |
| 791 | } |
| 792 | mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx); |
| 793 | if mb_info.transform_size_8x8 { |
| 794 | mb_type = MBType::Intra8x8; |
| 795 | mb_info.mb_type = MBType::Intra8x8; |
| 796 | } |
| 797 | } |
| 798 | decode_mb_pred_cabac(cabac, slice_hdr, mb_type, &mut self.sstate, &mut mb_info); |
| 799 | let (cbpy, cbpc) = if let MBType::Intra16x16(_, cbpy, cbpc) = mb_type { |
| 800 | (cbpy, cbpc) |
| 801 | } else { |
| 802 | decode_cbp_cabac(cabac, &self.sstate) |
| 803 | }; |
| 804 | if self.transform_8x8_mode && cbpy != 0 && mb_info.can_have_8x8_tx(self.sps[self.cur_sps].direct_8x8_inference) { |
| 805 | let mut ctx = 0; |
| 806 | if self.sstate.get_top_mb().transform_8x8 { |
| 807 | ctx += 1; |
| 808 | } |
| 809 | if self.sstate.get_left_mb().transform_8x8 { |
| 810 | ctx += 1; |
| 811 | } |
| 812 | mb_info.transform_size_8x8 = cabac.decode_bit(399 + ctx); |
| 813 | } |
| 814 | if mb_type.is_intra() { |
| 815 | self.sstate.get_cur_mb().cmode = mb_info.chroma_ipred; |
| 816 | } |
| 817 | mb_info.cbpy = cbpy; |
| 818 | mb_info.cbpc = cbpc; |
| 819 | self.sstate.get_cur_mb().cbp = (cbpc << 4) | cbpy; |
| 820 | if cbpy != 0 || cbpc != 0 || mb_type.is_intra16x16() { |
| 821 | let mb_qp_delta = decode_mb_qp_delta_cabac(cabac, last_qp_diff as usize); |
| 822 | validate!(mb_qp_delta >= -26 && mb_qp_delta <= 25); |
| 823 | last_qp_diff = mb_qp_delta != 0; |
| 824 | let new_qp = mb_qp_delta + i32::from(mb_info.qp_y); |
| 825 | mb_info.qp_y = if new_qp < 0 { |
| 826 | (new_qp + 52) as u8 |
| 827 | } else if new_qp >= 52 { |
| 828 | (new_qp - 52) as u8 |
| 829 | } else { |
| 830 | new_qp as u8 |
| 831 | }; |
| 832 | mb_info.coeffs = [[0; 16]; 25]; |
| 833 | if self.transform_8x8_mode { |
| 834 | mb_info.clear_coeffs8x8(); |
| 835 | } |
| 836 | mb_info.chroma_dc = [[0; 4]; 2]; |
| 837 | decode_residual_cabac(cabac, &mut self.sstate, &mut mb_info); |
| 838 | } else { |
| 839 | last_qp_diff = false; |
| 840 | } |
| 841 | } |
| 842 | } else { |
| 843 | mb_info.mb_type = skip_type; |
| 844 | mb_info.transform_size_8x8 = false; |
| 845 | last_qp_diff = false; |
| 846 | } |
| 847 | self.handle_macroblock(slice_hdr, &mut mb_info); |
| 848 | prev_mb_skipped = mb_skip; |
| 849 | if !(self.is_mbaff && ((mb_idx & 1) == 0)) && cabac.decode_terminate() { |
| 850 | if let Some(ref mut pic) = self.cur_pic { |
| 851 | pic.cur_mb = mb_idx + 1; |
| 852 | } |
| 853 | return Ok(mb_idx + 1 == self.num_mbs); |
| 854 | } |
| 855 | mb_idx += 1; |
| 856 | } |
| 857 | Err(DecoderError::InvalidData) |
| 858 | } |
| 859 | } |
| 860 | |
| 861 | impl NADecoder for H264Decoder { |
| 862 | fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
| 863 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
| 864 | let fmt = YUV420_FORMAT; |
| 865 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, false, fmt)); |
| 866 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); |
| 867 | |
| 868 | let edata = info.get_extradata().unwrap(); |
| 869 | //print!("edata:"); for &el in edata.iter() { print!(" {:02X}", el); } println!(); |
| 870 | if edata.len() > 11 && &edata[0..4] == b"avcC" { |
| 871 | let mut mr = MemoryReader::new_read(edata.as_slice()); |
| 872 | let mut br = ByteReader::new(&mut mr); |
| 873 | let mut nal_buf = Vec::new(); |
| 874 | |
| 875 | br.read_skip(4)?; |
| 876 | let version = br.read_byte()?; |
| 877 | validate!(version == 1); |
| 878 | let profile = br.read_byte()?; |
| 879 | let _compatibility = br.read_byte()?; |
| 880 | let _level = br.read_byte()?; |
| 881 | let b = br.read_byte()?; |
| 882 | validate!((b & 0xFC) == 0xFC); |
| 883 | self.nal_len = (b & 3) + 1; |
| 884 | let b = br.read_byte()?; |
| 885 | validate!((b & 0xE0) == 0xE0); |
| 886 | let num_sps = (b & 0x1F) as usize; |
| 887 | for _ in 0..num_sps { |
| 888 | let len = br.read_u16be()? as usize; |
| 889 | let offset = br.tell() as usize; |
| 890 | validate!((br.peek_byte()? & 0x1F) == 7); |
| 891 | let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf); |
| 892 | self.handle_nal(&nal_buf, supp, true)?; |
| 893 | br.read_skip(len)?; |
| 894 | } |
| 895 | let num_pps = br.read_byte()? as usize; |
| 896 | for _ in 0..num_pps { |
| 897 | let len = br.read_u16be()? as usize; |
| 898 | let offset = br.tell() as usize; |
| 899 | validate!((br.peek_byte()? & 0x1F) == 8); |
| 900 | let _size = unescape_nal(&edata[offset..][..len], &mut nal_buf); |
| 901 | self.handle_nal(&nal_buf, supp, true)?; |
| 902 | br.read_skip(len)?; |
| 903 | } |
| 904 | if br.left() > 0 { |
| 905 | match profile { |
| 906 | 100 | 110 | 122 | 144 => { |
| 907 | let b = br.read_byte()?; |
| 908 | validate!((b & 0xFC) == 0xFC); |
| 909 | // b & 3 -> chroma format |
| 910 | let b = br.read_byte()?; |
| 911 | validate!((b & 0xF8) == 0xF8); |
| 912 | // b & 7 -> luma depth minus 8 |
| 913 | let b = br.read_byte()?; |
| 914 | validate!((b & 0xF8) == 0xF8); |
| 915 | // b & 7 -> chroma depth minus 8 |
| 916 | let num_spsext = br.read_byte()? as usize; |
| 917 | for _ in 0..num_spsext { |
| 918 | let len = br.read_u16be()? as usize; |
| 919 | // parse spsext |
| 920 | br.read_skip(len)?; |
| 921 | } |
| 922 | }, |
| 923 | _ => {}, |
| 924 | }; |
| 925 | } |
| 926 | } else { |
| 927 | return Err(DecoderError::NotImplemented); |
| 928 | } |
| 929 | |
| 930 | self.width = vinfo.get_width(); |
| 931 | self.height = vinfo.get_height(); |
| 932 | |
| 933 | if (self.width == 0 || self.height == 0) && !self.sps.is_empty() { |
| 934 | self.width = self.sps[0].pic_width_in_mbs * 16; |
| 935 | self.height = self.sps[0].pic_height_in_mbs * 16; |
| 936 | } |
| 937 | |
| 938 | let num_bufs = if !self.sps.is_empty() { |
| 939 | self.sps[0].num_ref_frames as usize + 1 |
| 940 | } else { |
| 941 | 3 |
| 942 | }.max(16 + 1); |
| 943 | supp.pool_u8.set_dec_bufs(num_bufs); |
| 944 | supp.pool_u8.prealloc_video(NAVideoInfo::new(self.width, self.height, false, fmt), 4)?; |
| 945 | |
| 946 | Ok(()) |
| 947 | } else { |
| 948 | println!("???"); |
| 949 | Err(DecoderError::InvalidData) |
| 950 | } |
| 951 | } |
| 952 | fn decode(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 953 | let src = pkt.get_buffer(); |
| 954 | |
| 955 | let mut mr = MemoryReader::new_read(&src); |
| 956 | let mut br = ByteReader::new(&mut mr); |
| 957 | let mut nal_buf = Vec::with_capacity(src.len()); |
| 958 | if self.nal_len > 0 { |
| 959 | let mut skip_decoding = false; |
| 960 | if self.skip_mode != FrameSkipMode::None { |
| 961 | let mut pic_type = FrameType::I; |
| 962 | let mut is_ref = false; |
| 963 | while br.left() > 0 { |
| 964 | let size = match self.nal_len { |
| 965 | 1 => br.read_byte()? as usize, |
| 966 | 2 => br.read_u16be()? as usize, |
| 967 | 3 => br.read_u24be()? as usize, |
| 968 | 4 => br.read_u32be()? as usize, |
| 969 | _ => unreachable!(), |
| 970 | }; |
| 971 | validate!(br.left() >= (size as i64)); |
| 972 | let offset = br.tell() as usize; |
| 973 | let size = unescape_nal(&src[offset..][..size], &mut nal_buf); |
| 974 | validate!(size > 0); |
| 975 | let nal_ref_idc = nal_buf[0] >> 5; |
| 976 | let nal_unit_type = nal_buf[0] & 0x1F; |
| 977 | if nal_unit_type == 1 || nal_unit_type == 5 { |
| 978 | let mut bitr = BitReader::new(&nal_buf[1..], BitReaderMode::BE); |
| 979 | let (first_mb, slice_type) = parse_slice_header_minimal(&mut bitr)?; |
| 980 | if first_mb == 0 && nal_ref_idc != 0 { |
| 981 | is_ref = true; |
| 982 | } |
| 983 | let new_type = slice_type.to_frame_type(); |
| 984 | pic_type = match (pic_type, new_type) { |
| 985 | (FrameType::I, _) => new_type, |
| 986 | (_, FrameType::B) => FrameType::B, |
| 987 | _ => pic_type, |
| 988 | }; |
| 989 | } |
| 990 | br.read_skip(size)?; |
| 991 | } |
| 992 | match self.skip_mode { |
| 993 | FrameSkipMode::IntraOnly => { |
| 994 | skip_decoding = pic_type != FrameType::I; |
| 995 | }, |
| 996 | FrameSkipMode::KeyframesOnly => { |
| 997 | if !is_ref { |
| 998 | skip_decoding = true; |
| 999 | } |
| 1000 | }, |
| 1001 | _ => {}, |
| 1002 | }; |
| 1003 | br.seek(SeekFrom::Start(0))?; |
| 1004 | } |
| 1005 | while br.left() > 0 { |
| 1006 | let size = match self.nal_len { |
| 1007 | 1 => br.read_byte()? as usize, |
| 1008 | 2 => br.read_u16be()? as usize, |
| 1009 | 3 => br.read_u24be()? as usize, |
| 1010 | 4 => br.read_u32be()? as usize, |
| 1011 | _ => unreachable!(), |
| 1012 | }; |
| 1013 | validate!(br.left() >= (size as i64)); |
| 1014 | let offset = br.tell() as usize; |
| 1015 | let _size = unescape_nal(&src[offset..][..size], &mut nal_buf); |
| 1016 | self.handle_nal(nal_buf.as_slice(), supp, skip_decoding)?; |
| 1017 | br.read_skip(size)?; |
| 1018 | } |
| 1019 | } else { |
| 1020 | //todo NAL detection |
| 1021 | unimplemented!(); |
| 1022 | } |
| 1023 | |
| 1024 | let (bufinfo, ftype, dts) = if self.has_pic && self.cur_pic.is_some() { |
| 1025 | let mut npic = None; |
| 1026 | std::mem::swap(&mut self.cur_pic, &mut npic); |
| 1027 | let cpic = npic.unwrap(); |
| 1028 | let ret = (NABufferType::Video(cpic.buf.clone()), cpic.pic_type, Some(u64::from(cpic.full_id))); |
| 1029 | if cpic.is_ref { |
| 1030 | self.frame_refs.add_short_term(cpic.clone(), self.sps[self.cur_sps].num_ref_frames); |
| 1031 | } |
| 1032 | if let Some(lt_idx) = cpic.long_term { |
| 1033 | self.frame_refs.add_long_term(lt_idx, cpic); |
| 1034 | } |
| 1035 | ret |
| 1036 | } else { |
| 1037 | (NABufferType::None, FrameType::Skip, None) |
| 1038 | }; |
| 1039 | |
| 1040 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); |
| 1041 | frm.set_keyframe(ftype == FrameType::I); |
| 1042 | if let (Some(mydts), None) = (dts, frm.get_dts()) { |
| 1043 | frm.set_dts(Some(mydts)); |
| 1044 | } |
| 1045 | if let Some(dts) = dts { |
| 1046 | frm.set_id(dts as i64); |
| 1047 | } |
| 1048 | frm.set_frame_type(ftype); |
| 1049 | Ok(frm.into_ref()) |
| 1050 | } |
| 1051 | fn flush(&mut self) { |
| 1052 | } |
| 1053 | } |
| 1054 | |
| 1055 | const DEBLOCK_SKIP_OPTION: &str = "skip_deblock"; |
| 1056 | |
| 1057 | const DECODER_OPTIONS: &[NAOptionDefinition] = &[ |
| 1058 | NAOptionDefinition { |
| 1059 | name: FRAME_SKIP_OPTION, description: FRAME_SKIP_OPTION_DESC, |
| 1060 | opt_type: NAOptionDefinitionType::Bool }, |
| 1061 | NAOptionDefinition { |
| 1062 | name: DEBLOCK_SKIP_OPTION, description: "Loop filter skipping mode", |
| 1063 | opt_type: NAOptionDefinitionType::String(Some(&[ |
| 1064 | FRAME_SKIP_OPTION_VAL_NONE, |
| 1065 | FRAME_SKIP_OPTION_VAL_KEYFRAME, |
| 1066 | FRAME_SKIP_OPTION_VAL_INTRA |
| 1067 | ])) }, |
| 1068 | ]; |
| 1069 | |
| 1070 | impl NAOptionHandler for H264Decoder { |
| 1071 | fn get_supported_options(&self) -> &[NAOptionDefinition] { DECODER_OPTIONS } |
| 1072 | fn set_options(&mut self, options: &[NAOption]) { |
| 1073 | for option in options.iter() { |
| 1074 | for opt_def in DECODER_OPTIONS.iter() { |
| 1075 | if opt_def.check(option).is_ok() { |
| 1076 | match (option.name, &option.value) { |
| 1077 | (FRAME_SKIP_OPTION, NAValue::String(ref str)) => { |
| 1078 | if let Ok(smode) = FrameSkipMode::from_str(str) { |
| 1079 | self.skip_mode = smode; |
| 1080 | } |
| 1081 | }, |
| 1082 | (DEBLOCK_SKIP_OPTION, NAValue::Bool(val)) => { |
| 1083 | self.deblock_skip = *val; |
| 1084 | }, |
| 1085 | _ => {}, |
| 1086 | } |
| 1087 | } |
| 1088 | } |
| 1089 | } |
| 1090 | } |
| 1091 | fn query_option_value(&self, name: &str) -> Option<NAValue> { |
| 1092 | match name { |
| 1093 | FRAME_SKIP_OPTION => Some(NAValue::String(self.skip_mode.to_string())), |
| 1094 | DEBLOCK_SKIP_OPTION => Some(NAValue::Bool(self.deblock_skip)), |
| 1095 | _ => None, |
| 1096 | } |
| 1097 | } |
| 1098 | } |
| 1099 | |
| 1100 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
| 1101 | Box::new(H264Decoder::new()) |
| 1102 | } |
| 1103 | |
| 1104 | #[cfg(test)] |
| 1105 | mod test { |
| 1106 | use nihav_core::codecs::RegisteredDecoders; |
| 1107 | use nihav_core::demuxers::RegisteredDemuxers; |
| 1108 | use nihav_codec_support::test::dec_video::*; |
| 1109 | use crate::itu_register_all_decoders; |
| 1110 | use nihav_commonfmt::generic_register_all_demuxers; |
| 1111 | |
| 1112 | // samples if not specified otherwise come from H.264 conformance suite |
| 1113 | mod raw_demux; |
| 1114 | mod conformance; |
| 1115 | use self::raw_demux::RawH264DemuxerCreator; |
| 1116 | |
| 1117 | #[test] |
| 1118 | fn test_h264_perframe() { |
| 1119 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 1120 | dmx_reg.add_demuxer(&RawH264DemuxerCreator{}); |
| 1121 | generic_register_all_demuxers(&mut dmx_reg); |
| 1122 | let mut dec_reg = RegisteredDecoders::new(); |
| 1123 | itu_register_all_decoders(&mut dec_reg); |
| 1124 | |
| 1125 | test_decoding("rawh264", "h264", |
| 1126 | "assets/ITU/h264-conformance/CABAST3_Sony_E.jsv", |
| 1127 | None, &dmx_reg, &dec_reg, ExpectedTestResult::MD5Frames(vec![ |
| 1128 | [0x85fc4b44, 0xc9aefdc9, 0x568d0592, 0x2eccf9a0], |
| 1129 | [0xbd8d11bc, 0x97acf592, 0x45a3cdbb, 0xa254a882], |
| 1130 | [0xbda0e0b9, 0x9fbe1974, 0x1540b244, 0x46a050ca], |
| 1131 | [0x471f0057, 0x125ef3b4, 0x4a87515f, 0xba254bbb], |
| 1132 | [0x466a7df2, 0xb392c2a4, 0xed66b68b, 0xfdaad2da], |
| 1133 | [0x96334b41, 0x41bac7ef, 0xe87154f1, 0xa5fc3551], |
| 1134 | [0x0fd4e9b8, 0x4269bbec, 0x00a1978f, 0xe6224851], |
| 1135 | [0x68be82af, 0x856615a7, 0x387a253d, 0x8473e6b9], |
| 1136 | [0xc4bed119, 0x14ba7fe0, 0x447cb680, 0x555da4c5], |
| 1137 | [0x85d127d6, 0x04b85928, 0x26740281, 0x4d848db5], |
| 1138 | [0xe44fe461, 0x0d0b64ce, 0xf191179b, 0xabdab686], |
| 1139 | [0x347c8edb, 0x847ad11f, 0x8f16b84e, 0xdc915d75], |
| 1140 | [0xeb1364a6, 0x91c9d99d, 0x324f5427, 0xcc9f11a2], |
| 1141 | [0x7aeb5a3f, 0xebc9c4dd, 0x8f12c8e4, 0x37a2db97], |
| 1142 | [0xa11e5c33, 0x656df4c0, 0x1e8b98d8, 0x1736722f], |
| 1143 | [0x239f2ef2, 0xe32b0603, 0x448366bb, 0x9331051c], |
| 1144 | [0x1815a1b1, 0xfb7e7cf0, 0xd5c7dd5b, 0x0135a8fb], |
| 1145 | [0xea3b85dd, 0xa96e7015, 0xa91c576d, 0x5c127ca1], |
| 1146 | [0x1c49148f, 0x6d9e7045, 0x093f0b7c, 0x42c2ebaa], |
| 1147 | [0x4b4c2863, 0x95709d8c, 0xeb72e251, 0x096632dc], |
| 1148 | [0x727418e5, 0x2c015383, 0x59580212, 0x0302dd99], |
| 1149 | [0xbe57dfa4, 0xf2aa7d70, 0xa068ee62, 0x77372861], |
| 1150 | [0x2faef43a, 0x73da6654, 0xb9d9c22e, 0xc59520bc], |
| 1151 | [0x138cff40, 0x3e6c108a, 0xa981e654, 0x903da85b], |
| 1152 | [0xa90454f5, 0x7875d5db, 0xbab234bd, 0xe6ce1193]])); |
| 1153 | } |
| 1154 | |
| 1155 | // mostly static music video downloaded with youtube-dl |
| 1156 | #[test] |
| 1157 | fn test_h264_real1() { |
| 1158 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 1159 | dmx_reg.add_demuxer(&RawH264DemuxerCreator{}); |
| 1160 | generic_register_all_demuxers(&mut dmx_reg); |
| 1161 | let mut dec_reg = RegisteredDecoders::new(); |
| 1162 | itu_register_all_decoders(&mut dec_reg); |
| 1163 | |
| 1164 | test_decoding("mov", "h264", "assets/ITU/1.mp4", |
| 1165 | Some(60), &dmx_reg, &dec_reg, |
| 1166 | ExpectedTestResult::MD5Frames(vec![ |
| 1167 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1168 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1169 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1170 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1171 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1172 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1173 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1174 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1175 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1176 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1177 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1178 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1179 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1180 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1181 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1182 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1183 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1184 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1185 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1186 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1187 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1188 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1189 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1190 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1191 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1192 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1193 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1194 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1195 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1196 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1197 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1198 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1199 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1200 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1201 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1202 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1203 | [0x9dbac04a, 0xc49ca8c1, 0x09bb9182, 0xc7928970], |
| 1204 | [0xf1c88c12, 0x7da871f5, 0xdaf3153f, 0x66e72d72], |
| 1205 | [0x3d4765f1, 0x8ac472f6, 0x7ffd13a6, 0xc7a45dae], |
| 1206 | [0x60e5e13a, 0xd2d7f239, 0x1a793d71, 0x19f8c190], |
| 1207 | [0xdd80c3e4, 0xb1500149, 0x43925280, 0x9e5f3230], |
| 1208 | [0x2adf6e64, 0x39012d45, 0x7a776cb5, 0x3df76e84], |
| 1209 | [0x44319007, 0xbc837dd2, 0x486b2703, 0x451d0651], |
| 1210 | [0x922386ef, 0xaf101e9b, 0xf2094a40, 0xc8c454c0], |
| 1211 | [0x0d81e398, 0x04192a56, 0xa31f39d0, 0x5e0a2deb], |
| 1212 | [0xcdd144b3, 0xd1c7743e, 0x5753b0f4, 0xc070efa9], |
| 1213 | [0xe1c67e39, 0x6065ddaf, 0x576bf9f1, 0x8e6825aa], |
| 1214 | [0xaf817b0d, 0xdc6c345a, 0xf7f289c7, 0x6cc482d8], |
| 1215 | [0x81dc4bcb, 0xee4fc5e5, 0x9b87c7ef, 0xdd0fb034], |
| 1216 | [0x8b07f523, 0x4168799f, 0x990cb270, 0x858b9f2c], |
| 1217 | [0x31855a80, 0xadbcc562, 0xe60628be, 0x5f04be09], |
| 1218 | [0x9c614acc, 0xbd08a3f4, 0x91b02c45, 0x41899a83], |
| 1219 | [0x89d09064, 0xbff810a3, 0x9c674179, 0x305225a6], |
| 1220 | [0xba1fc8d3, 0x15d34fae, 0x565d363b, 0x4f4d0604], |
| 1221 | [0x1cb15a1b, 0xa0be111e, 0x45cc801f, 0x01a2c691], |
| 1222 | [0xd898be48, 0xd19bf58d, 0xe22fe44f, 0x6a2914fb], |
| 1223 | [0xec6712af, 0xa13b55c0, 0x2915a746, 0xb29a5c48], |
| 1224 | [0x745798fa, 0x4ef0f882, 0x59335c08, 0xb1d9dbb4], |
| 1225 | [0x4045b495, 0xdb3d969c, 0x1f0d9220, 0x5a34067b], |
| 1226 | [0x94fee093, 0x78ad89b3, 0xf20e882b, 0x941425db], |
| 1227 | [0xc3eb1a78, 0x4b4e098a, 0xcbcf9bb4, 0xfd5b5426]])); |
| 1228 | } |
| 1229 | // a sample downloaded from gfycat.com |
| 1230 | #[test] |
| 1231 | fn test_h264_real2() { |
| 1232 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 1233 | dmx_reg.add_demuxer(&RawH264DemuxerCreator{}); |
| 1234 | generic_register_all_demuxers(&mut dmx_reg); |
| 1235 | let mut dec_reg = RegisteredDecoders::new(); |
| 1236 | itu_register_all_decoders(&mut dec_reg); |
| 1237 | test_decoding("mov", "h264", "assets/ITU/DimpledSpanishCuckoo-mobile.mp4", |
| 1238 | Some(10), &dmx_reg, &dec_reg, |
| 1239 | ExpectedTestResult::MD5Frames(vec![ |
| 1240 | [0x1addcb8e, 0xde58b857, 0x17222c32, 0x75455fa8], |
| 1241 | [0xae63141a, 0x79435b2e, 0xfe606c48, 0xf676da66], |
| 1242 | [0xfdb80404, 0x6a288e23, 0x45cc4106, 0xdd5eb57c], |
| 1243 | [0xd603a3ff, 0x872dcb9b, 0x43f7a71c, 0x2ad4eecc], |
| 1244 | [0x639ed6a5, 0xbb1cfec6, 0x0ee5443a, 0x1694772a], |
| 1245 | [0xf8ef3f48, 0x152de238, 0xb1995f9a, 0xf82ad1d5], |
| 1246 | [0x604f6265, 0xb9d82f56, 0x21f00cf4, 0xc69c18a7], |
| 1247 | [0xd932c16e, 0x25cbf060, 0xcb66543b, 0xfe8a5019], |
| 1248 | [0xf2a3dac0, 0x0f4678dd, 0xf64c8228, 0x47f14676], |
| 1249 | [0x267041ee, 0x3b6b8b64, 0x8bfe1697, 0x1fba508b], |
| 1250 | [0x9f917e72, 0x75d882a9, 0xa5e3e684, 0x4ed87eff]])); |
| 1251 | } |
| 1252 | } |
| 1253 | |
| 1254 | pub const I4X4_SCAN: [(u8, u8); 16] = [ |
| 1255 | (0,0), (1,0), (0,1), (1,1), (2,0), (3,0), (2,1), (3,1), |
| 1256 | (0,2), (1,2), (0,3), (1,3), (2,2), (3,2), (2,3), (3,3) |
| 1257 | ]; |