| 1 | use io::bitreader::*; |
| 2 | use io::codebook::*; |
| 3 | use formats; |
| 4 | use super::*; |
| 5 | use super::blockdec::*; |
| 6 | use super::h263data::*; |
| 7 | |
| 8 | #[allow(dead_code)] |
| 9 | struct Tables { |
| 10 | intra_mcbpc_cb: Codebook<u8>, |
| 11 | inter_mcbpc_cb: Codebook<u8>, |
| 12 | cbpy_cb: Codebook<u8>, |
| 13 | rl_cb: Codebook<H263RLSym>, |
| 14 | aic_rl_cb: Codebook<H263RLSym>, |
| 15 | mv_cb: Codebook<u8>, |
| 16 | } |
| 17 | |
| 18 | struct Intel263Decoder { |
| 19 | info: Rc<NACodecInfo>, |
| 20 | dec: DCT8x8VideoDecoder, |
| 21 | tables: Tables, |
| 22 | } |
| 23 | |
| 24 | struct Intel263BR<'a> { |
| 25 | br: BitReader<'a>, |
| 26 | tables: &'a Tables, |
| 27 | gob_no: usize, |
| 28 | mb_w: usize, |
| 29 | is_pb: bool, |
| 30 | } |
| 31 | |
| 32 | fn check_marker<'a>(br: &mut BitReader<'a>) -> DecoderResult<()> { |
| 33 | let mark = br.read(1)?; |
| 34 | validate!(mark == 1); |
| 35 | Ok(()) |
| 36 | } |
| 37 | |
| 38 | impl<'a> Intel263BR<'a> { |
| 39 | fn new(src: &'a [u8], tables: &'a Tables) -> Self { |
| 40 | Intel263BR { |
| 41 | br: BitReader::new(src, src.len(), BitReaderMode::BE), |
| 42 | tables: tables, |
| 43 | gob_no: 0, |
| 44 | mb_w: 0, |
| 45 | is_pb: false, |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | fn decode_block(&mut self, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 50 | let mut br = &mut self.br; |
| 51 | let mut idx = 0; |
| 52 | if intra { |
| 53 | let mut dc = br.read(8)?; |
| 54 | if dc == 255 { dc = 128; } |
| 55 | blk[0] = (dc as i16) << 3; |
| 56 | idx = 1; |
| 57 | } |
| 58 | if !coded { return Ok(()); } |
| 59 | |
| 60 | let rl_cb = &self.tables.rl_cb; // could be aic too |
| 61 | let q_add = if quant == 0 { 0i16 } else { ((quant - 1) | 1) as i16 }; |
| 62 | let q = (quant * 2) as i16; |
| 63 | while idx < 64 { |
| 64 | let code = br.read_cb(rl_cb)?; |
| 65 | let run; |
| 66 | let mut level; |
| 67 | let last; |
| 68 | if !code.is_escape() { |
| 69 | run = code.get_run(); |
| 70 | level = code.get_level(); |
| 71 | last = code.is_last(); |
| 72 | if br.read_bool()? { level = -level; } |
| 73 | level = (level * q) + q_add; |
| 74 | } else { |
| 75 | last = br.read_bool()?; |
| 76 | run = br.read(6)? as u8; |
| 77 | level = br.read_s(8)? as i16; |
| 78 | if level == -128 { |
| 79 | let low = br.read(5)? as i16; |
| 80 | let top = br.read_s(6)? as i16; |
| 81 | level = (top << 5) | low; |
| 82 | } |
| 83 | level = (level * q) + q_add; |
| 84 | if level < -2048 { level = -2048; } |
| 85 | if level > 2047 { level = 2047; } |
| 86 | } |
| 87 | idx += run; |
| 88 | validate!(idx < 64); |
| 89 | let oidx = H263_ZIGZAG[idx as usize]; |
| 90 | blk[oidx] = level; |
| 91 | idx += 1; |
| 92 | if last { break; } |
| 93 | } |
| 94 | Ok(()) |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { |
| 99 | let code = br.read_cb(mv_cb)? as i16; |
| 100 | if code == 0 { return Ok(0) } |
| 101 | if !br.read_bool()? { |
| 102 | Ok(code) |
| 103 | } else { |
| 104 | Ok(-code) |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { |
| 109 | let xval = decode_mv_component(br, mv_cb)?; |
| 110 | let yval = decode_mv_component(br, mv_cb)?; |
| 111 | Ok(MV::new(xval, yval)) |
| 112 | } |
| 113 | |
| 114 | fn decode_b_info(br: &mut BitReader, is_pb: bool, is_intra: bool) -> DecoderResult<BBlockInfo> { |
| 115 | if is_pb { // as improved pb |
| 116 | let pb_mv_add = if is_intra { 1 } else { 0 }; |
| 117 | if br.read_bool()?{ |
| 118 | if br.read_bool()? { |
| 119 | let pb_mv_count = 1 - (br.read(1)? as usize); |
| 120 | let cbpb = br.read(6)? as u8; |
| 121 | Ok(BBlockInfo::new(true, cbpb, pb_mv_count + pb_mv_add, pb_mv_count == 1)) |
| 122 | } else { |
| 123 | Ok(BBlockInfo::new(true, 0, 1 + pb_mv_add, true)) |
| 124 | } |
| 125 | } else { |
| 126 | Ok(BBlockInfo::new(true, 0, pb_mv_add, false)) |
| 127 | } |
| 128 | } else { |
| 129 | Ok(BBlockInfo::new(false, 0, 0, false)) |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | impl<'a> BlockDecoder for Intel263BR<'a> { |
| 134 | |
| 135 | #[allow(unused_variables)] |
| 136 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { |
| 137 | let mut br = &mut self.br; |
| 138 | let syncw = br.read(22)?; |
| 139 | validate!(syncw == 0x000020); |
| 140 | let tr = br.read(8)? as u8; |
| 141 | check_marker(br)?; |
| 142 | let id = br.read(1)?; |
| 143 | validate!(id == 0); |
| 144 | br.read(1)?; // split screen indicator |
| 145 | br.read(1)?; // document camera indicator |
| 146 | br.read(1)?; // freeze picture release |
| 147 | let mut sfmt = br.read(3)?; |
| 148 | validate!((sfmt != 0b000) && (sfmt != 0b110)); |
| 149 | let is_intra = !br.read_bool()?; |
| 150 | let umv = br.read_bool()?; |
| 151 | br.read(1)?; // syntax arithmetic coding |
| 152 | let apm = br.read_bool()?; |
| 153 | self.is_pb = br.read_bool()?; |
| 154 | let deblock; |
| 155 | if sfmt == 0b111 { |
| 156 | sfmt = br.read(3)?; |
| 157 | validate!((sfmt != 0b000) && (sfmt != 0b111)); |
| 158 | br.read(2)?; // unknown flags |
| 159 | deblock = br.read_bool()?; |
| 160 | br.read(1)?; // unknown flag |
| 161 | let pbplus = br.read_bool()?; |
| 162 | br.read(5)?; // unknown flags |
| 163 | let marker = br.read(5)?; |
| 164 | validate!(marker == 1); |
| 165 | } else { |
| 166 | deblock = false; |
| 167 | } |
| 168 | let w; let h; |
| 169 | if sfmt == 0b110 { |
| 170 | let par = br.read(4)?; |
| 171 | w = ((br.read(9)? + 1) * 4) as usize; |
| 172 | check_marker(br)?; |
| 173 | h = ((br.read(9)? + 1) * 4) as usize; |
| 174 | if par == 0b1111 { |
| 175 | let pixw = br.read(8)?; |
| 176 | let pixh = br.read(8)?; |
| 177 | validate!((pixw != 0) && (pixh != 0)); |
| 178 | } |
| 179 | } else { |
| 180 | let (w_, h_) = H263_SIZES[sfmt as usize]; |
| 181 | w = w_; |
| 182 | h = h_; |
| 183 | } |
| 184 | let quant = br.read(5)?; |
| 185 | let cpm = br.read_bool()?; |
| 186 | validate!(!cpm); |
| 187 | |
| 188 | let pbinfo; |
| 189 | if self.is_pb { |
| 190 | let trb = br.read(3)?; |
| 191 | let dbquant = br.read(2)?; |
| 192 | pbinfo = Some(PBInfo::new(trb as u8, dbquant as u8)); |
| 193 | } else { |
| 194 | pbinfo = None; |
| 195 | } |
| 196 | while br.read_bool()? { // skip PEI |
| 197 | br.read(8)?; |
| 198 | } |
| 199 | //println!("frame {}x{} intra: {} q {} pb {} apm {} umv {} @{}", w, h, is_intra, quant, self.is_pb, apm, umv, br.tell()); |
| 200 | self.gob_no = 0; |
| 201 | self.mb_w = (w + 15) >> 4; |
| 202 | |
| 203 | let ftype = if is_intra { Type::I } else { Type::P }; |
| 204 | let picinfo = PicInfo::new(w, h, ftype, quant as u8, apm, umv, tr, pbinfo, deblock); |
| 205 | Ok(picinfo) |
| 206 | } |
| 207 | |
| 208 | #[allow(unused_variables)] |
| 209 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<Slice> { |
| 210 | let mut br = &mut self.br; |
| 211 | let gbsc = br.read(17)?; |
| 212 | validate!(gbsc == 1); |
| 213 | let gn = br.read(5)?; |
| 214 | let gfid = br.read(2)?; |
| 215 | let gquant = br.read(5)?; |
| 216 | //println!("GOB gn {:X} id {} q {}", gn, gfid, gquant); |
| 217 | let ret = Slice::new(0, self.gob_no, gquant as u8); |
| 218 | self.gob_no += 1; |
| 219 | Ok(ret) |
| 220 | } |
| 221 | |
| 222 | fn decode_block_header(&mut self, info: &PicInfo, slice: &Slice) -> DecoderResult<BlockInfo> { |
| 223 | let mut br = &mut self.br; |
| 224 | let mut q = slice.get_quant(); |
| 225 | match info.get_mode() { |
| 226 | Type::I => { |
| 227 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; |
| 228 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; } |
| 229 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 230 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 231 | let dquant = (cbpc & 4) != 0; |
| 232 | if dquant { |
| 233 | let idx = br.read(2)? as usize; |
| 234 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 235 | } |
| 236 | Ok(BlockInfo::new(Type::I, cbp, q)) |
| 237 | }, |
| 238 | Type::P => { |
| 239 | if br.read_bool()? { return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); } |
| 240 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; |
| 241 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; } |
| 242 | let is_intra = (cbpc & 0x04) != 0; |
| 243 | let dquant = (cbpc & 0x08) != 0; |
| 244 | let is_4x4 = (cbpc & 0x10) != 0; |
| 245 | if is_intra { |
| 246 | let mut mvec: Vec<MV> = Vec::new(); |
| 247 | let bbinfo = decode_b_info(br, self.is_pb, true)?; |
| 248 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 249 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 250 | if dquant { |
| 251 | let idx = br.read(2)? as usize; |
| 252 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 253 | } |
| 254 | let mut binfo = BlockInfo::new(Type::I, cbp, q); |
| 255 | binfo.set_bpart(bbinfo); |
| 256 | if self.is_pb { |
| 257 | for _ in 0..bbinfo.get_num_mv() { |
| 258 | mvec.push(decode_mv(br, &self.tables.mv_cb)?); |
| 259 | } |
| 260 | binfo.set_b_mv(mvec.as_slice()); |
| 261 | } |
| 262 | return Ok(binfo); |
| 263 | } |
| 264 | |
| 265 | let bbinfo = decode_b_info(br, self.is_pb, false)?; |
| 266 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 267 | // if /* !aiv && */(cbpc & 3) != 3 { |
| 268 | cbpy ^= 0xF; |
| 269 | // } |
| 270 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 271 | if dquant { |
| 272 | let idx = br.read(2)? as usize; |
| 273 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 274 | } |
| 275 | let mut binfo = BlockInfo::new(Type::P, cbp, q); |
| 276 | binfo.set_bpart(bbinfo); |
| 277 | if !is_4x4 { |
| 278 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; |
| 279 | binfo.set_mv(&mvec); |
| 280 | } else { |
| 281 | let mvec: [MV; 4] = [ |
| 282 | decode_mv(br, &self.tables.mv_cb)?, |
| 283 | decode_mv(br, &self.tables.mv_cb)?, |
| 284 | decode_mv(br, &self.tables.mv_cb)?, |
| 285 | decode_mv(br, &self.tables.mv_cb)? |
| 286 | ]; |
| 287 | binfo.set_mv(&mvec); |
| 288 | } |
| 289 | if self.is_pb { |
| 290 | let mut mvec: Vec<MV> = Vec::with_capacity(bbinfo.get_num_mv()); |
| 291 | for _ in 0..bbinfo.get_num_mv() { |
| 292 | let mv = decode_mv(br, &self.tables.mv_cb)?; |
| 293 | mvec.push(mv); |
| 294 | } |
| 295 | binfo.set_b_mv(mvec.as_slice()); |
| 296 | } |
| 297 | Ok(binfo) |
| 298 | }, |
| 299 | _ => { Err(DecoderError::InvalidData) }, |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | #[allow(unused_variables)] |
| 304 | fn decode_block_intra(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 305 | self.decode_block(quant, true, coded, blk) |
| 306 | } |
| 307 | |
| 308 | #[allow(unused_variables)] |
| 309 | fn decode_block_inter(&mut self, info: &BlockInfo, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 310 | self.decode_block(quant, false, coded, blk) |
| 311 | } |
| 312 | |
| 313 | fn is_slice_end(&mut self) -> bool { self.br.peek(16) == 0 } |
| 314 | |
| 315 | fn filter_row(&mut self, buf: &mut NAVideoBuffer<u8>, mb_y: usize, mb_w: usize, cbpi: &CBPInfo) { |
| 316 | let stride = buf.get_stride(0); |
| 317 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; |
| 318 | for mb_x in 0..mb_w { |
| 319 | let coff = off; |
| 320 | let coded0 = cbpi.is_coded(mb_x, 0); |
| 321 | let coded1 = cbpi.is_coded(mb_x, 1); |
| 322 | let q = cbpi.get_q(mb_w + mb_x); |
| 323 | if mb_y != 0 { |
| 324 | if coded0 && cbpi.is_coded_top(mb_x, 0) { deblock_hor(buf, 0, q, coff); } |
| 325 | if coded1 && cbpi.is_coded_top(mb_x, 1) { deblock_hor(buf, 0, q, coff + 8); } |
| 326 | } |
| 327 | let coff = off + 8 * stride; |
| 328 | if cbpi.is_coded(mb_x, 2) && coded0 { deblock_hor(buf, 0, q, coff); } |
| 329 | if cbpi.is_coded(mb_x, 3) && coded1 { deblock_hor(buf, 0, q, coff + 8); } |
| 330 | off += 16; |
| 331 | } |
| 332 | let mut leftt = false; |
| 333 | let mut leftc = false; |
| 334 | let mut off = buf.get_offset(0) + mb_y * 16 * stride; |
| 335 | for mb_x in 0..mb_w { |
| 336 | let ctop0 = cbpi.is_coded_top(mb_x, 0); |
| 337 | let ctop1 = cbpi.is_coded_top(mb_x, 0); |
| 338 | let ccur0 = cbpi.is_coded(mb_x, 0); |
| 339 | let ccur1 = cbpi.is_coded(mb_x, 1); |
| 340 | let q = cbpi.get_q(mb_w + mb_x); |
| 341 | if mb_y != 0 { |
| 342 | let coff = off - 8 * stride; |
| 343 | let qtop = cbpi.get_q(mb_x); |
| 344 | if leftt && ctop0 { deblock_ver(buf, 0, qtop, coff); } |
| 345 | if ctop0 && ctop1 { deblock_ver(buf, 0, qtop, coff + 8); } |
| 346 | } |
| 347 | if leftc && ccur0 { deblock_ver(buf, 0, q, off); } |
| 348 | if ccur0 && ccur1 { deblock_ver(buf, 0, q, off + 8); } |
| 349 | leftt = ctop1; |
| 350 | leftc = ccur1; |
| 351 | off += 16; |
| 352 | } |
| 353 | let strideu = buf.get_stride(1); |
| 354 | let stridev = buf.get_stride(2); |
| 355 | let offu = buf.get_offset(1) + mb_y * 8 * strideu; |
| 356 | let offv = buf.get_offset(2) + mb_y * 8 * stridev; |
| 357 | if mb_y != 0 { |
| 358 | for mb_x in 0..mb_w { |
| 359 | let ctu = cbpi.is_coded_top(mb_x, 4); |
| 360 | let ccu = cbpi.is_coded(mb_x, 4); |
| 361 | let ctv = cbpi.is_coded_top(mb_x, 5); |
| 362 | let ccv = cbpi.is_coded(mb_x, 5); |
| 363 | let q = cbpi.get_q(mb_w + mb_x); |
| 364 | if ctu && ccu { deblock_hor(buf, 1, q, offu + mb_x * 8); } |
| 365 | if ctv && ccv { deblock_hor(buf, 2, q, offv + mb_x * 8); } |
| 366 | } |
| 367 | let mut leftu = false; |
| 368 | let mut leftv = false; |
| 369 | let offu = buf.get_offset(1) + (mb_y - 1) * 8 * strideu; |
| 370 | let offv = buf.get_offset(2) + (mb_y - 1) * 8 * stridev; |
| 371 | for mb_x in 0..mb_w { |
| 372 | let ctu = cbpi.is_coded_top(mb_x, 4); |
| 373 | let ctv = cbpi.is_coded_top(mb_x, 5); |
| 374 | let qt = cbpi.get_q(mb_x); |
| 375 | if leftu && ctu { deblock_ver(buf, 1, qt, offu + mb_x * 8); } |
| 376 | if leftv && ctv { deblock_ver(buf, 2, qt, offv + mb_x * 8); } |
| 377 | leftu = ctu; |
| 378 | leftv = ctv; |
| 379 | } |
| 380 | } |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | fn deblock_hor(buf: &mut NAVideoBuffer<u8>, comp: usize, q: u8, off: usize) { |
| 385 | let stride = buf.get_stride(comp); |
| 386 | let mut dptr = buf.get_data_mut(); |
| 387 | let mut buf = dptr.as_mut_slice(); |
| 388 | for x in 0..8 { |
| 389 | let a = buf[off - 2 * stride + x] as i16; |
| 390 | let b = buf[off - 1 * stride + x] as i16; |
| 391 | let c = buf[off + 0 * stride + x] as i16; |
| 392 | let d = buf[off + 1 * stride + x] as i16; |
| 393 | let diff = ((a - d) * 3 + (c - b) * 8) >> 4; |
| 394 | if (diff != 0) && (diff >= -32) && (diff < 32) { |
| 395 | let d0 = diff.abs() * 2 - (q as i16); |
| 396 | let d1 = if d0 < 0 { 0 } else { d0 }; |
| 397 | let d2 = diff.abs() - d1; |
| 398 | let d3 = if d2 < 0 { 0 } else { d2 }; |
| 399 | |
| 400 | let delta = if diff < 0 { -d3 } else { d3 }; |
| 401 | |
| 402 | let b1 = b + delta; |
| 403 | if b1 < 0 { buf[off - 1 * stride + x] = 0; } |
| 404 | else if b1 > 255 { buf[off - 1 * stride + x] = 0xFF; } |
| 405 | else { buf[off - 1 * stride + x] = b1 as u8; } |
| 406 | let c1 = c - delta; |
| 407 | if c1 < 0 { buf[off + x] = 0; } |
| 408 | else if c1 > 255 { buf[off + x] = 0xFF; } |
| 409 | else { buf[off + x] = c1 as u8; } |
| 410 | } |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | fn deblock_ver(buf: &mut NAVideoBuffer<u8>, comp: usize, q: u8, off: usize) { |
| 415 | let stride = buf.get_stride(comp); |
| 416 | let mut dptr = buf.get_data_mut(); |
| 417 | let mut buf = dptr.as_mut_slice(); |
| 418 | for y in 0..8 { |
| 419 | let a = buf[off - 2 + y * stride] as i16; |
| 420 | let b = buf[off - 1 + y * stride] as i16; |
| 421 | let c = buf[off + 0 + y * stride] as i16; |
| 422 | let d = buf[off + 1 + y * stride] as i16; |
| 423 | let diff = ((a - d) * 3 + (c - b) * 8) >> 4; |
| 424 | if (diff != 0) && (diff >= -32) && (diff < 32) { |
| 425 | let d0 = diff.abs() * 2 - (q as i16); |
| 426 | let d1 = if d0 < 0 { 0 } else { d0 }; |
| 427 | let d2 = diff.abs() - d1; |
| 428 | let d3 = if d2 < 0 { 0 } else { d2 }; |
| 429 | |
| 430 | let delta = if diff < 0 { -d3 } else { d3 }; |
| 431 | |
| 432 | let b1 = b + delta; |
| 433 | if b1 < 0 { buf[off - 1 + y * stride] = 0; } |
| 434 | else if b1 > 255 { buf[off - 1 + y * stride] = 0xFF; } |
| 435 | else { buf[off - 1 + y * stride] = b1 as u8; } |
| 436 | let c1 = c - delta; |
| 437 | if c1 < 0 { buf[off + y * stride] = 0; } |
| 438 | else if c1 > 255 { buf[off + y * stride] = 0xFF; } |
| 439 | else { buf[off + y * stride] = c1 as u8; } |
| 440 | } |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | impl Intel263Decoder { |
| 445 | fn new() -> Self { |
| 446 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); |
| 447 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 448 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); |
| 449 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 450 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); |
| 451 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 452 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); |
| 453 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 454 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); |
| 455 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 456 | let mut coderead = H263ShortCodeReader::new(H263_MV); |
| 457 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 458 | let tables = Tables { |
| 459 | intra_mcbpc_cb: intra_mcbpc_cb, |
| 460 | inter_mcbpc_cb: inter_mcbpc_cb, |
| 461 | cbpy_cb: cbpy_cb, |
| 462 | rl_cb: rl_cb, |
| 463 | aic_rl_cb: aic_rl_cb, |
| 464 | mv_cb: mv_cb, |
| 465 | }; |
| 466 | |
| 467 | Intel263Decoder{ |
| 468 | info: Rc::new(DUMMY_CODEC_INFO), |
| 469 | dec: DCT8x8VideoDecoder::new(), |
| 470 | tables: tables, |
| 471 | } |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | impl NADecoder for Intel263Decoder { |
| 476 | fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()> { |
| 477 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
| 478 | let w = vinfo.get_width(); |
| 479 | let h = vinfo.get_height(); |
| 480 | let fmt = formats::YUV420_FORMAT; |
| 481 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); |
| 482 | self.info = Rc::new(NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata())); |
| 483 | Ok(()) |
| 484 | } else { |
| 485 | Err(DecoderError::InvalidData) |
| 486 | } |
| 487 | } |
| 488 | fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 489 | let src = pkt.get_buffer(); |
| 490 | |
| 491 | if src.len() == 8 { |
| 492 | let bret = self.dec.get_bframe(); |
| 493 | let buftype; |
| 494 | let is_skip; |
| 495 | if let Ok(btype) = bret { |
| 496 | buftype = btype; |
| 497 | is_skip = false; |
| 498 | } else { |
| 499 | buftype = NABufferType::None; |
| 500 | is_skip = true; |
| 501 | } |
| 502 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buftype); |
| 503 | frm.set_keyframe(false); |
| 504 | frm.set_frame_type(if is_skip { FrameType::Skip } else { FrameType::B }); |
| 505 | return Ok(Rc::new(RefCell::new(frm))); |
| 506 | } |
| 507 | let mut ibr = Intel263BR::new(&src, &self.tables); |
| 508 | |
| 509 | let bufinfo = self.dec.parse_frame(&mut ibr)?; |
| 510 | |
| 511 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); |
| 512 | frm.set_keyframe(self.dec.is_intra()); |
| 513 | frm.set_frame_type(if self.dec.is_intra() { FrameType::I } else { FrameType::P }); |
| 514 | Ok(Rc::new(RefCell::new(frm))) |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | |
| 519 | pub fn get_decoder() -> Box<NADecoder> { |
| 520 | Box::new(Intel263Decoder::new()) |
| 521 | } |
| 522 | |
| 523 | #[cfg(test)] |
| 524 | mod test { |
| 525 | use codecs::*; |
| 526 | use demuxers::*; |
| 527 | use io::byteio::*; |
| 528 | |
| 529 | #[test] |
| 530 | fn test_intel263() { |
| 531 | let avi_dmx = find_demuxer("avi").unwrap(); |
| 532 | let mut file = File::open("assets/neal73_saber.avi").unwrap(); |
| 533 | let mut fr = FileReader::new_read(&mut file); |
| 534 | let mut br = ByteReader::new(&mut fr); |
| 535 | let mut dmx = avi_dmx.new_demuxer(&mut br); |
| 536 | dmx.open().unwrap(); |
| 537 | |
| 538 | let mut decs: Vec<Option<Box<NADecoder>>> = Vec::new(); |
| 539 | for i in 0..dmx.get_num_streams() { |
| 540 | let s = dmx.get_stream(i).unwrap(); |
| 541 | let info = s.get_info(); |
| 542 | let decfunc = find_decoder(info.get_name()); |
| 543 | if let Some(df) = decfunc { |
| 544 | let mut dec = (df)(); |
| 545 | dec.init(info).unwrap(); |
| 546 | decs.push(Some(dec)); |
| 547 | } else { |
| 548 | decs.push(None); |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | loop { |
| 553 | let pktres = dmx.get_frame(); |
| 554 | if let Err(e) = pktres { |
| 555 | if e == DemuxerError::EOF { break; } |
| 556 | panic!("error"); |
| 557 | } |
| 558 | let pkt = pktres.unwrap(); |
| 559 | //if pkt.get_pts().unwrap() > 263 { break; } |
| 560 | let streamno = pkt.get_stream().get_id() as usize; |
| 561 | if let Some(ref mut dec) = decs[streamno] { |
| 562 | let frm = dec.decode(&pkt).unwrap(); |
| 563 | if pkt.get_stream().get_info().is_video() { |
| 564 | write_pgmyuv("ih263_", streamno, pkt.get_pts().unwrap(), frm); |
| 565 | } |
| 566 | } |
| 567 | } |
| 568 | //panic!("THE END"); |
| 569 | } |
| 570 | } |