| 1 | use nihav_core::codecs::*; |
| 2 | use nihav_core::io::byteio::*; |
| 3 | use nihav_core::io::bitreader::*; |
| 4 | use nihav_core::io::codebook::*; |
| 5 | |
| 6 | #[repr(u8)] |
| 7 | enum TM2StreamType { |
| 8 | CHigh = 0, |
| 9 | CLow, |
| 10 | LHigh, |
| 11 | LLow, |
| 12 | Update, |
| 13 | Motion, |
| 14 | BlockType, |
| 15 | Num |
| 16 | } |
| 17 | |
| 18 | #[repr(u8)] |
| 19 | #[derive(Debug,Clone,Copy)] |
| 20 | enum TM2BlockType { |
| 21 | HiRes, |
| 22 | MedRes, |
| 23 | LowRes, |
| 24 | NullRes, |
| 25 | Update, |
| 26 | Still, |
| 27 | Motion |
| 28 | } |
| 29 | |
| 30 | const TM2_BLOCK_TYPES: [TM2BlockType; 7] = [ |
| 31 | TM2BlockType::HiRes, TM2BlockType::MedRes, TM2BlockType::LowRes, TM2BlockType::NullRes, |
| 32 | TM2BlockType::Update, TM2BlockType::Still, TM2BlockType::Motion |
| 33 | ]; |
| 34 | |
| 35 | trait ReadLenEsc { |
| 36 | fn read_len_esc(&mut self) -> DecoderResult<usize>; |
| 37 | } |
| 38 | |
| 39 | const TM2_ESCAPE: usize = 0x80000000; |
| 40 | |
| 41 | impl<'a> ReadLenEsc for ByteReader<'a> { |
| 42 | fn read_len_esc(&mut self) -> DecoderResult<usize> { |
| 43 | let len = self.read_u32le()? as usize; |
| 44 | if len == TM2_ESCAPE { |
| 45 | let len2 = self.read_u32le()? as usize; |
| 46 | Ok(len2) |
| 47 | } else { |
| 48 | Ok(len) |
| 49 | } |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | struct HuffDef { |
| 54 | val_bits: u8, |
| 55 | max_bits: u8, |
| 56 | nelems: usize, |
| 57 | } |
| 58 | |
| 59 | impl HuffDef { |
| 60 | fn read(&mut self, br: &mut BitReader, codes: &mut Vec<FullCodebookDesc<u8>>, prefix: u32, len: u8) -> DecoderResult<()> { |
| 61 | validate!(len <= self.max_bits); |
| 62 | if !br.read_bool()? { |
| 63 | validate!(codes.len() < self.nelems); |
| 64 | let sym = br.read(self.val_bits)? as u8; |
| 65 | codes.push(FullCodebookDesc { code: prefix, bits: len, sym }); |
| 66 | } else { |
| 67 | self.read(br, codes, (prefix << 1) | 0, len + 1)?; |
| 68 | self.read(br, codes, (prefix << 1) | 1, len + 1)?; |
| 69 | } |
| 70 | Ok(()) |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | struct HuffTree { |
| 75 | cb: Option<Codebook<u8>>, |
| 76 | sym0: u8, |
| 77 | } |
| 78 | |
| 79 | impl HuffTree { |
| 80 | fn new() -> Self { |
| 81 | Self { cb: None, sym0: 0 } |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | const TM2_MAX_DELTAS: usize = 64; |
| 86 | |
| 87 | struct TM2Stream { |
| 88 | tokens: Vec<u8>, |
| 89 | deltas: [i32; TM2_MAX_DELTAS], |
| 90 | pos: usize, |
| 91 | } |
| 92 | |
| 93 | impl Default for TM2Stream { |
| 94 | fn default() -> Self { |
| 95 | Self { |
| 96 | tokens: Vec::new(), |
| 97 | deltas: [0; TM2_MAX_DELTAS], |
| 98 | pos: 0, |
| 99 | } |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | impl TM2Stream { |
| 104 | fn read_header(&mut self, src: &[u8], br: &mut ByteReader) -> DecoderResult<()> { |
| 105 | self.tokens.clear(); |
| 106 | self.pos = 0; |
| 107 | |
| 108 | let len = br.read_u32le()? as usize; |
| 109 | let endpos = br.tell() + (len as u64) * 4; |
| 110 | if len == 0 { |
| 111 | return Ok(()); |
| 112 | } |
| 113 | let ntoks = br.read_u32le()? as usize; |
| 114 | validate!(ntoks < (1 << 24)); |
| 115 | if (ntoks & 1) != 0 { |
| 116 | let dlen = br.read_len_esc()?; |
| 117 | if (dlen as i32) > 0 { |
| 118 | let rest_size = (endpos - br.tell()) as usize; |
| 119 | let skip_size = self.read_deltas(&src[br.tell() as usize..][..rest_size])?; |
| 120 | validate!(skip_size == dlen * 4); |
| 121 | br.read_skip(skip_size)?; |
| 122 | } |
| 123 | } |
| 124 | let _len = br.read_len_esc()?; |
| 125 | let _algo = br.read_u32le()?; |
| 126 | |
| 127 | let mut htree = HuffTree::new(); |
| 128 | let rest_size = (endpos - br.tell()) as usize; |
| 129 | let skip_size = self.read_huff_tree(&src[br.tell() as usize..][..rest_size], &mut htree)?; |
| 130 | br.read_skip(skip_size)?; |
| 131 | |
| 132 | let len = br.read_u32le()? as usize; |
| 133 | validate!(br.tell() + (len as u64) * 4 <= endpos); |
| 134 | if len > 0 { |
| 135 | self.tokens.reserve(ntoks >> 1); |
| 136 | let rest_size = (endpos - br.tell()) as usize; |
| 137 | let skip_size = self.read_tokens(&src[br.tell() as usize..][..rest_size], &htree, ntoks >> 1)?; |
| 138 | br.read_skip(skip_size)?; |
| 139 | } else { |
| 140 | self.tokens.resize(ntoks >> 1, htree.sym0); |
| 141 | } |
| 142 | |
| 143 | |
| 144 | let pos = br.tell(); |
| 145 | validate!(pos <= endpos); |
| 146 | let toskip = endpos - pos; |
| 147 | br.read_skip(toskip as usize)?; |
| 148 | |
| 149 | Ok(()) |
| 150 | } |
| 151 | fn read_deltas(&mut self, src: &[u8]) -> DecoderResult<usize> { |
| 152 | let mut br = BitReader::new(src, BitReaderMode::LE32MSB); |
| 153 | let coded_deltas = br.read(9)? as usize; |
| 154 | let bits = br.read(5)? as u8; |
| 155 | validate!((coded_deltas <= TM2_MAX_DELTAS) && (bits > 0)); |
| 156 | let mask = 1 << (bits - 1); |
| 157 | let bias = 1 << bits; |
| 158 | self.deltas = [0; TM2_MAX_DELTAS]; |
| 159 | for i in 0..coded_deltas { |
| 160 | let val = br.read(bits)?; |
| 161 | if (val & mask) != 0 { |
| 162 | self.deltas[i] = (val as i32) - bias; |
| 163 | } else { |
| 164 | self.deltas[i] = val as i32; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | Ok(((br.tell() + 31) >> 5) << 2) |
| 169 | } |
| 170 | fn read_huff_tree(&mut self, src: &[u8], htree: &mut HuffTree) -> DecoderResult<usize> { |
| 171 | let mut br = BitReader::new(src, BitReaderMode::LE32MSB); |
| 172 | |
| 173 | let val_bits = br.read(5)? as u8; |
| 174 | let max_bits = br.read(5)? as u8; |
| 175 | let min_bits = br.read(5)? as u8; |
| 176 | let nelems = br.read(17)? as usize; |
| 177 | validate!(val_bits > 0 && val_bits <= 6); |
| 178 | validate!(nelems > 0); |
| 179 | validate!((max_bits < 25) && (min_bits <= max_bits)); |
| 180 | |
| 181 | let mut codes: Vec<FullCodebookDesc<u8>> = Vec::with_capacity(nelems); |
| 182 | let mut hdef = HuffDef { val_bits, max_bits, nelems }; |
| 183 | hdef.read(&mut br, &mut codes, 0, 0)?; |
| 184 | htree.sym0 = codes[0].sym; |
| 185 | if nelems > 1 { |
| 186 | let mut cr = FullCodebookDescReader::new(codes); |
| 187 | htree.cb = Some(Codebook::new(&mut cr, CodebookMode::MSB)?); |
| 188 | } |
| 189 | |
| 190 | Ok(((br.tell() + 31) >> 5) << 2) |
| 191 | } |
| 192 | fn read_tokens(&mut self, src: &[u8], htree: &HuffTree, ntoks: usize) -> DecoderResult<usize> { |
| 193 | let mut br = BitReader::new(src, BitReaderMode::LE32MSB); |
| 194 | |
| 195 | if let Some(ref cb) = htree.cb { |
| 196 | for _ in 0..ntoks { |
| 197 | let tok = br.read_cb(cb)?; |
| 198 | self.tokens.push(tok); |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | Ok(((br.tell() + 31) >> 5) << 2) |
| 203 | } |
| 204 | |
| 205 | fn get_block_type(&mut self) -> DecoderResult<u8> { |
| 206 | validate!(self.pos < self.tokens.len()); |
| 207 | let res = self.tokens[self.pos]; |
| 208 | self.pos += 1; |
| 209 | Ok(res) |
| 210 | } |
| 211 | fn get_token(&mut self) -> DecoderResult<i32> { |
| 212 | validate!(self.pos < self.tokens.len()); |
| 213 | let idx = self.tokens[self.pos] as usize; |
| 214 | validate!(idx < TM2_MAX_DELTAS); |
| 215 | self.pos += 1; |
| 216 | Ok(self.deltas[idx]) |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | #[derive(Default)] |
| 221 | struct DeltaState { |
| 222 | dy: [i32; 4], |
| 223 | dc: [[i32; 2]; 2], |
| 224 | } |
| 225 | |
| 226 | #[allow(clippy::erasing_op)] |
| 227 | impl DeltaState { |
| 228 | fn apply_y(&mut self, dst: &mut [u8], mut yoff: usize, ystride: usize, ydeltas: &[i32; 16], last: &mut [i32]) { |
| 229 | for y in 0..4 { |
| 230 | let mut d = self.dy[y]; |
| 231 | for x in 0..4 { |
| 232 | d += ydeltas[x + y * 4]; |
| 233 | last[x] += d; |
| 234 | dst[yoff + x] = last[x].max(0).min(255) as u8; |
| 235 | } |
| 236 | self.dy[y] = d; |
| 237 | yoff += ystride; |
| 238 | } |
| 239 | } |
| 240 | fn apply_c(&mut self, dst: &mut [i16], mut coff: usize, cstride: usize, cdeltas: &[i32; 4], idx: usize, last: &mut [i32]) { |
| 241 | for y in 0..2 { |
| 242 | let mut d = self.dc[idx][y]; |
| 243 | for x in 0..2 { |
| 244 | d += cdeltas[x + y * 2]; |
| 245 | last[x] += d; |
| 246 | dst[coff + x] = last[x] as i16; |
| 247 | } |
| 248 | self.dc[idx][y] = d; |
| 249 | coff += cstride; |
| 250 | } |
| 251 | } |
| 252 | fn interpolate_y_low(&mut self, last: &mut [i32]) { |
| 253 | let dsum = self.dy[0] + self.dy[1] + self.dy[2] + self.dy[3]; |
| 254 | last[1] = (last[0] - dsum + last[2]) >> 1; |
| 255 | last[3] = (last[2] + last[4]) >> 1; |
| 256 | |
| 257 | let t0 = self.dy[0] + self.dy[1]; |
| 258 | let t1 = self.dy[2] + self.dy[3]; |
| 259 | self.dy[0] = t0 >> 1; |
| 260 | self.dy[1] = t0 - (t0 >> 1); |
| 261 | self.dy[2] = t1 >> 1; |
| 262 | self.dy[3] = t1 - (t1 >> 1); |
| 263 | } |
| 264 | fn interpolate_y_null(&mut self, last: &mut [i32]) { |
| 265 | let dsum = self.dy[0] + self.dy[1] + self.dy[2] + self.dy[3]; |
| 266 | let left = last[0] - dsum; |
| 267 | let right = last[4]; |
| 268 | let diff = right - left; |
| 269 | last[1] = left + (diff >> 2); |
| 270 | last[2] = left + (diff >> 1); |
| 271 | last[3] = right - (diff >> 2); |
| 272 | |
| 273 | let mut sum = left; |
| 274 | self.dy[0] = (left + (dsum >> 2)) - sum; |
| 275 | sum += self.dy[0]; |
| 276 | self.dy[1] = (left + (dsum >> 1)) - sum; |
| 277 | sum += self.dy[1]; |
| 278 | self.dy[2] = (left + dsum - (dsum >> 2)) - sum; |
| 279 | sum += self.dy[2]; |
| 280 | self.dy[3] = (left + dsum) - sum; |
| 281 | } |
| 282 | fn interpolate_c(&mut self, idx: usize, last: &mut [i32]) { |
| 283 | let dsum = self.dc[idx][0] + self.dc[idx][1]; |
| 284 | let l = (last[0] + last[2] - dsum) >> 1; |
| 285 | self.dc[idx][0] = dsum >> 1; |
| 286 | self.dc[idx][1] = dsum - (dsum >> 1); |
| 287 | last[1] = l; |
| 288 | } |
| 289 | fn recalc_y(&mut self, dst: &[u8], yoff: usize, ystride: usize, last: &mut [i32]) { |
| 290 | let src = &dst[yoff+3..]; |
| 291 | self.dy[0] = i32::from(src[ystride * 0]) - last[3]; |
| 292 | self.dy[1] = i32::from(src[ystride * 1]) - i32::from(src[ystride * 0]); |
| 293 | self.dy[2] = i32::from(src[ystride * 2]) - i32::from(src[ystride * 1]); |
| 294 | self.dy[3] = i32::from(src[ystride * 3]) - i32::from(src[ystride * 2]); |
| 295 | let src = &dst[yoff + 3 * ystride..]; |
| 296 | for x in 0..4 { |
| 297 | last[x] = i32::from(src[x]); |
| 298 | } |
| 299 | } |
| 300 | fn recalc_c(&mut self, dst: &[i16], coff: usize, cstride: usize, idx: usize, last: &mut [i32]) { |
| 301 | self.dc[idx][0] = i32::from(dst[coff + 1]) - last[1]; |
| 302 | self.dc[idx][1] = i32::from(dst[coff + 1 + cstride]) - i32::from(dst[coff + 1]); |
| 303 | last[0] = i32::from(dst[coff + cstride + 0]); |
| 304 | last[1] = i32::from(dst[coff + cstride + 1]); |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | #[derive(Default)] |
| 309 | struct TM2Frame { |
| 310 | ydata: Vec<u8>, |
| 311 | udata: Vec<i16>, |
| 312 | vdata: Vec<i16>, |
| 313 | ystride: usize, |
| 314 | cstride: usize, |
| 315 | } |
| 316 | |
| 317 | impl TM2Frame { |
| 318 | fn alloc(width: usize, height: usize) -> Self { |
| 319 | let ystride = (width + 3) & !3; |
| 320 | let ysize = ystride * ((height + 3) & !3); |
| 321 | let cstride = ystride >> 1; |
| 322 | let csize = cstride * (((height + 3) & !3) >> 1); |
| 323 | Self { ydata: vec![0; ysize], udata: vec![0; csize], vdata: vec![0; csize], ystride, cstride } |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | #[derive(Default)] |
| 328 | struct TM2Decoder { |
| 329 | info: NACodecInfoRef, |
| 330 | streams: [TM2Stream; TM2StreamType::Num as usize], |
| 331 | width: usize, |
| 332 | height: usize, |
| 333 | cur_frame: TM2Frame, |
| 334 | prev_frame: TM2Frame, |
| 335 | } |
| 336 | |
| 337 | impl TM2Decoder { |
| 338 | fn new() -> Self { Self::default() } |
| 339 | #[allow(clippy::manual_memcpy)] |
| 340 | fn decode_blocks(&mut self) -> DecoderResult<bool> { |
| 341 | let ydst = &mut self.cur_frame.ydata; |
| 342 | let udst = &mut self.cur_frame.udata; |
| 343 | let vdst = &mut self.cur_frame.vdata; |
| 344 | let ystride = self.cur_frame.ystride; |
| 345 | let cstride = self.cur_frame.cstride; |
| 346 | let mut offs: [usize; 2] = [0; 2]; |
| 347 | let mut is_intra = true; |
| 348 | |
| 349 | let bw = self.width >> 2; |
| 350 | let bh = self.height >> 2; |
| 351 | validate!(self.streams[TM2StreamType::BlockType as usize].tokens.len() == bw * bh); |
| 352 | |
| 353 | let mut ydeltas: [i32; 16] = [0; 16]; |
| 354 | let mut cdeltas: [[i32; 4]; 2] = [[0; 4]; 2]; |
| 355 | let mut lasty: Vec<i32> = vec![0; self.width + 1]; |
| 356 | let mut lastu: Vec<i32> = vec![0; self.width/2 + 1]; |
| 357 | let mut lastv: Vec<i32> = vec![0; self.width/2 + 1]; |
| 358 | for by in 0..bh { |
| 359 | let mut dstate = DeltaState::default(); |
| 360 | for bx in 0..bw { |
| 361 | let bidx = self.streams[TM2StreamType::BlockType as usize].get_block_type()? as usize; |
| 362 | validate!(bidx < TM2_BLOCK_TYPES.len()); |
| 363 | let btype = TM2_BLOCK_TYPES[bidx]; |
| 364 | match btype { |
| 365 | TM2BlockType::HiRes => { |
| 366 | for i in 0..4 { |
| 367 | cdeltas[0][i] = self.streams[TM2StreamType::CHigh as usize].get_token()?; |
| 368 | cdeltas[1][i] = self.streams[TM2StreamType::CHigh as usize].get_token()?; |
| 369 | } |
| 370 | dstate.apply_c(udst, offs[1] + bx * 2, cstride, &cdeltas[0], 0, &mut lastu[bx*2+1..]); |
| 371 | dstate.apply_c(vdst, offs[1] + bx * 2, cstride, &cdeltas[1], 1, &mut lastv[bx*2+1..]); |
| 372 | for i in 0..4*4 { |
| 373 | ydeltas[i] = self.streams[TM2StreamType::LHigh as usize].get_token()?; |
| 374 | } |
| 375 | dstate.apply_y(ydst, offs[0] + bx * 4, ystride, &ydeltas, &mut lasty[bx*4+1..]); |
| 376 | }, |
| 377 | TM2BlockType::MedRes => { |
| 378 | cdeltas = [[0; 4]; 2]; |
| 379 | cdeltas[0][0] = self.streams[TM2StreamType::CLow as usize].get_token()?; |
| 380 | cdeltas[1][0] = self.streams[TM2StreamType::CLow as usize].get_token()?; |
| 381 | dstate.interpolate_c(0, &mut lastu[bx*2..]); |
| 382 | dstate.apply_c(udst, offs[1] + bx * 2, cstride, &cdeltas[0], 0, &mut lastu[bx*2+1..]); |
| 383 | dstate.interpolate_c(1, &mut lastv[bx*2..]); |
| 384 | dstate.apply_c(vdst, offs[1] + bx * 2, cstride, &cdeltas[1], 1, &mut lastv[bx*2+1..]); |
| 385 | for i in 0..4*4 { |
| 386 | ydeltas[i] = self.streams[TM2StreamType::LHigh as usize].get_token()?; |
| 387 | } |
| 388 | dstate.apply_y(ydst, offs[0] + bx * 4, ystride, &ydeltas, &mut lasty[bx*4+1..]); |
| 389 | }, |
| 390 | TM2BlockType::LowRes => { |
| 391 | cdeltas = [[0; 4]; 2]; |
| 392 | cdeltas[0][0] = self.streams[TM2StreamType::CLow as usize].get_token()?; |
| 393 | cdeltas[1][0] = self.streams[TM2StreamType::CLow as usize].get_token()?; |
| 394 | dstate.interpolate_c(0, &mut lastu[bx*2..]); |
| 395 | dstate.apply_c(udst, offs[1] + bx * 2, cstride, &cdeltas[0], 0, &mut lastu[bx*2+1..]); |
| 396 | dstate.interpolate_c(1, &mut lastv[bx*2..]); |
| 397 | dstate.apply_c(vdst, offs[1] + bx * 2, cstride, &cdeltas[1], 1, &mut lastv[bx*2+1..]); |
| 398 | ydeltas = [0; 16]; |
| 399 | ydeltas[ 0] = self.streams[TM2StreamType::LLow as usize].get_token()?; |
| 400 | ydeltas[ 2] = self.streams[TM2StreamType::LLow as usize].get_token()?; |
| 401 | ydeltas[ 8] = self.streams[TM2StreamType::LLow as usize].get_token()?; |
| 402 | ydeltas[10] = self.streams[TM2StreamType::LLow as usize].get_token()?; |
| 403 | dstate.interpolate_y_low(&mut lasty[bx*4..]); |
| 404 | dstate.apply_y(ydst, offs[0] + bx * 4, ystride, &ydeltas, &mut lasty[bx*4+1..]); |
| 405 | }, |
| 406 | TM2BlockType::NullRes => { |
| 407 | cdeltas = [[0; 4]; 2]; |
| 408 | dstate.interpolate_c(0, &mut lastu[bx*2..]); |
| 409 | dstate.apply_c(udst, offs[1] + bx * 2, cstride, &cdeltas[0], 0, &mut lastu[bx*2+1..]); |
| 410 | dstate.interpolate_c(1, &mut lastv[bx*2..]); |
| 411 | dstate.apply_c(vdst, offs[1] + bx * 2, cstride, &cdeltas[1], 1, &mut lastv[bx*2+1..]); |
| 412 | ydeltas = [0; 16]; |
| 413 | dstate.interpolate_y_null(&mut lasty[bx*4..]); |
| 414 | dstate.apply_y(ydst, offs[0] + bx * 4, ystride, &ydeltas, &mut lasty[bx*4+1..]); |
| 415 | }, |
| 416 | TM2BlockType::Update => { |
| 417 | is_intra = false; |
| 418 | |
| 419 | let mut coff = offs[1] + bx * 2; |
| 420 | let usrc = &self.prev_frame.udata; |
| 421 | let vsrc = &self.prev_frame.vdata; |
| 422 | for _ in 0..2 { |
| 423 | for x in 0..2 { |
| 424 | let du = self.streams[TM2StreamType::Update as usize].get_token()?; |
| 425 | let dv = self.streams[TM2StreamType::Update as usize].get_token()?; |
| 426 | udst[coff + x] = usrc[coff + x] + (du as i16); |
| 427 | vdst[coff + x] = vsrc[coff + x] + (dv as i16); |
| 428 | } |
| 429 | coff += cstride; |
| 430 | } |
| 431 | dstate.recalc_c(udst, offs[1] + bx * 2, cstride, 0, &mut lastu[bx*2+1..]); |
| 432 | dstate.recalc_c(vdst, offs[1] + bx * 2, cstride, 1, &mut lastv[bx*2+1..]); |
| 433 | let mut yoff = offs[0] + bx * 4; |
| 434 | let ysrc = &self.prev_frame.ydata; |
| 435 | for _ in 0..4 { |
| 436 | for x in 0..4 { |
| 437 | let dy = self.streams[TM2StreamType::Update as usize].get_token()?; |
| 438 | ydst[yoff + x] = (i32::from(ysrc[yoff + x]) + dy) as u8; |
| 439 | } |
| 440 | yoff += ystride; |
| 441 | } |
| 442 | dstate.recalc_y(ydst, offs[0] + bx * 4, ystride, &mut lasty[bx*4+1..]); |
| 443 | }, |
| 444 | TM2BlockType::Still => { |
| 445 | is_intra = false; |
| 446 | |
| 447 | let mut coff = offs[1] + bx * 2; |
| 448 | let usrc = &self.prev_frame.udata; |
| 449 | let vsrc = &self.prev_frame.vdata; |
| 450 | for _ in 0..2 { |
| 451 | for x in 0..2 { |
| 452 | udst[coff + x] = usrc[coff + x]; |
| 453 | vdst[coff + x] = vsrc[coff + x]; |
| 454 | } |
| 455 | coff += cstride; |
| 456 | } |
| 457 | dstate.recalc_c(udst, offs[1] + bx * 2, cstride, 0, &mut lastu[bx*2+1..]); |
| 458 | dstate.recalc_c(vdst, offs[1] + bx * 2, cstride, 1, &mut lastv[bx*2+1..]); |
| 459 | let mut yoff = offs[0] + bx * 4; |
| 460 | let ysrc = &self.prev_frame.ydata; |
| 461 | for _ in 0..4 { |
| 462 | for x in 0..4 { |
| 463 | ydst[yoff + x] = ysrc[yoff + x]; |
| 464 | } |
| 465 | yoff += ystride; |
| 466 | } |
| 467 | dstate.recalc_y(ydst, offs[0] + bx * 4, ystride, &mut lasty[bx*4+1..]); |
| 468 | }, |
| 469 | TM2BlockType::Motion => { |
| 470 | is_intra = false; |
| 471 | |
| 472 | let mx = self.streams[TM2StreamType::Motion as usize].get_token()?; |
| 473 | let my = self.streams[TM2StreamType::Motion as usize].get_token()?; |
| 474 | let xpos = (((bx as i32) * 4) + mx).max(0).min((self.width - 4) as i32) as usize; |
| 475 | let ypos = (((by as i32) * 4) + my).max(0).min((self.height - 4) as i32) as usize; |
| 476 | let mut coff = offs[1] + bx * 2; |
| 477 | let mut csoff = (xpos >> 1) + (ypos >> 1) * cstride; |
| 478 | let usrc = &self.prev_frame.udata; |
| 479 | let vsrc = &self.prev_frame.vdata; |
| 480 | for _ in 0..2 { |
| 481 | for x in 0..2 { |
| 482 | udst[coff + x] = usrc[csoff + x]; |
| 483 | vdst[coff + x] = vsrc[csoff + x]; |
| 484 | } |
| 485 | coff += cstride; |
| 486 | csoff += cstride; |
| 487 | } |
| 488 | dstate.recalc_c(udst, offs[1] + bx * 2, cstride, 0, &mut lastu[bx*2+1..]); |
| 489 | dstate.recalc_c(vdst, offs[1] + bx * 2, cstride, 1, &mut lastv[bx*2+1..]); |
| 490 | let mut yoff = offs[0] + bx * 4; |
| 491 | let mut ysoff = xpos + ypos * ystride; |
| 492 | let ysrc = &self.prev_frame.ydata; |
| 493 | for _ in 0..4 { |
| 494 | for x in 0..4 { |
| 495 | ydst[yoff + x] = ysrc[ysoff + x]; |
| 496 | } |
| 497 | yoff += ystride; |
| 498 | ysoff += ystride; |
| 499 | } |
| 500 | dstate.recalc_y(ydst, offs[0] + bx * 4, ystride, &mut lasty[bx*4+1..]); |
| 501 | }, |
| 502 | }; |
| 503 | } |
| 504 | offs[0] += ystride * 4; |
| 505 | offs[1] += cstride * 2; |
| 506 | } |
| 507 | |
| 508 | Ok(is_intra) |
| 509 | } |
| 510 | fn output_frame(&mut self, buf: &mut NAVideoBuffer<u8>) { |
| 511 | let fmt = buf.get_info().get_format(); |
| 512 | let offs = [fmt.get_chromaton(0).unwrap().get_offset() as usize, |
| 513 | fmt.get_chromaton(1).unwrap().get_offset() as usize, |
| 514 | fmt.get_chromaton(2).unwrap().get_offset() as usize]; |
| 515 | let stride = buf.get_stride(0); |
| 516 | let data = buf.get_data_mut().unwrap(); |
| 517 | let dst = data.as_mut_slice(); |
| 518 | |
| 519 | let mut off = 0; |
| 520 | let mut ysrc = 0; |
| 521 | let mut csrc = 0; |
| 522 | for y in 0..self.height { |
| 523 | let out = &mut dst[off..]; |
| 524 | for (x, pic) in out.chunks_exact_mut(3).take(self.width).enumerate() { |
| 525 | let y = i16::from(self.cur_frame.ydata[ysrc + x]); |
| 526 | let u = self.cur_frame.udata[csrc + (x >> 1)]; |
| 527 | let v = self.cur_frame.vdata[csrc + (x >> 1)]; |
| 528 | pic[offs[0]] = (y + u).max(0).min(255) as u8; |
| 529 | pic[offs[1]] = y.max(0).min(255) as u8; |
| 530 | pic[offs[2]] = (y + v).max(0).min(255) as u8; |
| 531 | } |
| 532 | off += stride; |
| 533 | ysrc += self.cur_frame.ystride; |
| 534 | if (y & 1) != 0 { |
| 535 | csrc += self.cur_frame.cstride; |
| 536 | } |
| 537 | } |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | impl NADecoder for TM2Decoder { |
| 542 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
| 543 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
| 544 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(vinfo.get_width(), vinfo.get_height(), false, YUV410_FORMAT)); |
| 545 | self.width = vinfo.get_width(); |
| 546 | self.height = vinfo.get_height(); |
| 547 | self.cur_frame = TM2Frame::alloc(self.width, self.height); |
| 548 | self.prev_frame = TM2Frame::alloc(self.width, self.height); |
| 549 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); |
| 550 | Ok(()) |
| 551 | } else { |
| 552 | Err(DecoderError::InvalidData) |
| 553 | } |
| 554 | } |
| 555 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 556 | let src = pkt.get_buffer(); |
| 557 | validate!(src.len() >= 40 + (TM2StreamType::Num as usize) * 4 + 4); |
| 558 | let mut mr = MemoryReader::new_read(&src); |
| 559 | let mut br = ByteReader::new(&mut mr); |
| 560 | |
| 561 | let magic = br.read_u32be()?; |
| 562 | validate!(magic == 0x100 || magic == 0x101); |
| 563 | br.read_skip(36)?; |
| 564 | for str in self.streams.iter_mut() { |
| 565 | str.read_header(&src, &mut br)?; |
| 566 | } |
| 567 | |
| 568 | let myinfo = NAVideoInfo::new(self.width, self.height, false, RGB24_FORMAT); |
| 569 | let bufinfo = alloc_video_buffer(myinfo, 2)?; |
| 570 | let mut buf = bufinfo.get_vbuf().unwrap(); |
| 571 | |
| 572 | let is_intra = self.decode_blocks()?; |
| 573 | self.output_frame(&mut buf); |
| 574 | std::mem::swap(&mut self.cur_frame, &mut self.prev_frame); |
| 575 | |
| 576 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); |
| 577 | frm.set_keyframe(is_intra); |
| 578 | frm.set_frame_type(if is_intra { FrameType::I } else { FrameType::P }); |
| 579 | Ok(frm.into_ref()) |
| 580 | } |
| 581 | fn flush(&mut self) { |
| 582 | } |
| 583 | } |
| 584 | |
| 585 | impl NAOptionHandler for TM2Decoder { |
| 586 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } |
| 587 | fn set_options(&mut self, _options: &[NAOption]) { } |
| 588 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } |
| 589 | } |
| 590 | |
| 591 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
| 592 | Box::new(TM2Decoder::new()) |
| 593 | } |
| 594 | |
| 595 | #[cfg(test)] |
| 596 | mod test { |
| 597 | use nihav_core::codecs::RegisteredDecoders; |
| 598 | use nihav_core::demuxers::RegisteredDemuxers; |
| 599 | use nihav_codec_support::test::dec_video::*; |
| 600 | use crate::duck_register_all_decoders; |
| 601 | use nihav_commonfmt::generic_register_all_demuxers; |
| 602 | #[test] |
| 603 | fn test_tm2() { |
| 604 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 605 | generic_register_all_demuxers(&mut dmx_reg); |
| 606 | let mut dec_reg = RegisteredDecoders::new(); |
| 607 | duck_register_all_decoders(&mut dec_reg); |
| 608 | |
| 609 | // sample: https://samples.mplayerhq.hu/V-codecs/TM20/tm20.avi |
| 610 | test_decoding("avi", "truemotion2", "assets/Duck/tm20.avi", Some(16), |
| 611 | &dmx_reg, &dec_reg, ExpectedTestResult::MD5Frames(vec![ |
| 612 | [0x8c336eb4, 0x10d0d934, 0x52392306, 0xc0bc6dd3], |
| 613 | [0xf168ddc2, 0x502fef17, 0xf7a5d0a2, 0xc0bf2d26], |
| 614 | [0xf33e02fa, 0x3931b691, 0xb29a0754, 0x07c0f8fa], |
| 615 | [0x2dd81034, 0x1c9f7616, 0x64eed48a, 0x3aa09cf0], |
| 616 | [0x55d18cd9, 0x0a3fd971, 0xf28fd5af, 0x9d9c3e3d], |
| 617 | [0xbf9cbbd8, 0x7b44c122, 0x1c7b1904, 0x77cc87aa], |
| 618 | [0xa6f6e79d, 0xc463a5bc, 0x5df9460c, 0xfce2e352], |
| 619 | [0x2ad22b2d, 0xd4ceaff8, 0xa4adb974, 0x37888a8d], |
| 620 | [0x4d45575f, 0x7e5b7670, 0x40cb7438, 0x9872d422], |
| 621 | [0xb35bc12b, 0x026c77c6, 0x93163784, 0xb37630b7], |
| 622 | [0xb1ec5059, 0x1fe26596, 0x4ac8d214, 0xdaf1b895], |
| 623 | [0x69dd5a5f, 0xe14a16fa, 0xa0653092, 0xb04e0739], |
| 624 | [0x979d8fe1, 0xbef29f89, 0xefae5f86, 0xa1ceb7d2], |
| 625 | [0xc6dc80d7, 0x80153c6b, 0x76d770c0, 0x8fd7cce7], |
| 626 | [0x8da96394, 0x1bd68024, 0x5feddfba, 0xd2b00660], |
| 627 | [0x53ff97c3, 0xc021a9b3, 0xabdddc10, 0xc99ab86f], |
| 628 | [0x66c877c4, 0xd8358048, 0xbca593db, 0xc6ecc4d1]])); |
| 629 | } |
| 630 | } |