| 1 | use io::bitreader::*; |
| 2 | use io::codebook::*; |
| 3 | use formats; |
| 4 | use super::super::*; |
| 5 | use super::*; |
| 6 | use super::code::H263BlockDSP; |
| 7 | use super::decoder::*; |
| 8 | use super::data::*; |
| 9 | |
| 10 | #[allow(dead_code)] |
| 11 | struct Tables { |
| 12 | intra_mcbpc_cb: Codebook<u8>, |
| 13 | inter_mcbpc_cb: Codebook<u8>, |
| 14 | mbtype_b_cb: Codebook<u8>, |
| 15 | cbpy_cb: Codebook<u8>, |
| 16 | cbpc_b_cb: Codebook<u8>, |
| 17 | rl_cb: Codebook<H263RLSym>, |
| 18 | aic_rl_cb: Codebook<H263RLSym>, |
| 19 | mv_cb: Codebook<u8>, |
| 20 | } |
| 21 | |
| 22 | #[derive(Clone,Copy)] |
| 23 | struct RPRInfo { |
| 24 | present: bool, |
| 25 | bits: u8, |
| 26 | widths: [usize; 8], |
| 27 | heights: [usize; 8], |
| 28 | } |
| 29 | |
| 30 | struct RealVideo20Decoder { |
| 31 | info: Rc<NACodecInfo>, |
| 32 | dec: H263BaseDecoder, |
| 33 | tables: Tables, |
| 34 | w: usize, |
| 35 | h: usize, |
| 36 | minor_ver: u8, |
| 37 | rpr: RPRInfo, |
| 38 | bdsp: H263BlockDSP, |
| 39 | } |
| 40 | |
| 41 | struct RealVideo20BR<'a> { |
| 42 | br: BitReader<'a>, |
| 43 | tables: &'a Tables, |
| 44 | num_slices: usize, |
| 45 | slice_no: usize, |
| 46 | slice_off: Vec<u32>, |
| 47 | w: usize, |
| 48 | h: usize, |
| 49 | mb_w: usize, |
| 50 | mb_h: usize, |
| 51 | mb_pos_bits: u8, |
| 52 | minor_ver: u8, |
| 53 | rpr: RPRInfo, |
| 54 | } |
| 55 | |
| 56 | struct RV20SliceInfo { |
| 57 | ftype: Type, |
| 58 | qscale: u8, |
| 59 | mb_x: usize, |
| 60 | mb_y: usize, |
| 61 | mb_pos: usize, |
| 62 | w: usize, |
| 63 | h: usize, |
| 64 | } |
| 65 | |
| 66 | impl RV20SliceInfo { |
| 67 | fn new(ftype: Type, qscale: u8, mb_x: usize, mb_y: usize, mb_pos: usize, w: usize, h: usize) -> Self { |
| 68 | RV20SliceInfo { ftype: ftype, qscale: qscale, mb_x: mb_x, mb_y: mb_y, mb_pos: mb_pos, w: w, h: h } |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | impl<'a> RealVideo20BR<'a> { |
| 73 | fn new(src: &'a [u8], tables: &'a Tables, width: usize, height: usize, minor_ver: u8, rpr: RPRInfo) -> Self { |
| 74 | let nslices = (src[0] as usize) + 1; |
| 75 | let mut slice_offs = Vec::with_capacity(nslices); |
| 76 | { |
| 77 | let offs = &src[1..][..nslices * 8]; |
| 78 | let mut br = BitReader::new(offs, offs.len(), BitReaderMode::BE); |
| 79 | for _ in 0..nslices { |
| 80 | br.skip(32).unwrap(); |
| 81 | let off = br.read(32).unwrap(); |
| 82 | slice_offs.push(off); |
| 83 | } |
| 84 | } |
| 85 | let soff = nslices * 8 + 1; |
| 86 | let mb_w = (width + 15) >> 4; |
| 87 | let mb_h = (height + 15) >> 4; |
| 88 | let max_pos = mb_w * mb_h - 1; |
| 89 | let mut mbpb = 0; |
| 90 | for i in 0..H263_MBB.len() { |
| 91 | if max_pos <= H263_MBB[i].blocks { |
| 92 | mbpb = H263_MBB[i].bits; |
| 93 | break; |
| 94 | } |
| 95 | } |
| 96 | RealVideo20BR { |
| 97 | br: BitReader::new(&src[soff..], src.len() - soff, BitReaderMode::BE), |
| 98 | tables: tables, |
| 99 | num_slices: nslices, |
| 100 | slice_no: 0, |
| 101 | slice_off: slice_offs, |
| 102 | w: width, |
| 103 | h: height, |
| 104 | mb_w: mb_w, |
| 105 | mb_h: mb_h, |
| 106 | mb_pos_bits: mbpb, |
| 107 | minor_ver: minor_ver, |
| 108 | rpr: rpr, |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | #[allow(unused_variables)] |
| 113 | fn decode_block(&mut self, sstate: &SliceState, quant: u8, intra: bool, coded: bool, blk: &mut [i16; 64], plane_no: usize, acpred: ACPredMode) -> DecoderResult<()> { |
| 114 | let mut br = &mut self.br; |
| 115 | let mut idx = 0; |
| 116 | if !sstate.is_iframe && intra { |
| 117 | let mut dc = br.read(8)? as i16; |
| 118 | if dc == 255 { dc = 128; } |
| 119 | blk[0] = dc << 3; |
| 120 | idx = 1; |
| 121 | } |
| 122 | if !coded { return Ok(()); } |
| 123 | let scan = match acpred { |
| 124 | ACPredMode::Hor => H263_SCAN_V, |
| 125 | ACPredMode::Ver => H263_SCAN_H, |
| 126 | _ => H263_ZIGZAG, |
| 127 | }; |
| 128 | |
| 129 | let rl_cb = if sstate.is_iframe { &self.tables.aic_rl_cb } else { &self.tables.rl_cb }; |
| 130 | let q_add = if quant == 0 { 0i16 } else { ((quant - 1) | 1) as i16 }; |
| 131 | let q = (quant * 2) as i16; |
| 132 | while idx < 64 { |
| 133 | let code = br.read_cb(rl_cb)?; |
| 134 | let run; |
| 135 | let mut level; |
| 136 | let last; |
| 137 | if !code.is_escape() { |
| 138 | run = code.get_run(); |
| 139 | level = code.get_level(); |
| 140 | last = code.is_last(); |
| 141 | if br.read_bool()? { level = -level; } |
| 142 | if (idx != 0) || !sstate.is_iframe { |
| 143 | level = (level * q) + q_add; |
| 144 | } else { |
| 145 | level = level * (H263_DC_SCALES[quant as usize] as i16); |
| 146 | } |
| 147 | } else { |
| 148 | last = br.read_bool()?; |
| 149 | run = br.read(6)? as u8; |
| 150 | level = br.read_s(8)? as i16; |
| 151 | if level == -128 { |
| 152 | let low = br.read(5)? as i16; |
| 153 | let top = br.read_s(6)? as i16; |
| 154 | level = (top << 5) | low; |
| 155 | } |
| 156 | if (idx != 0) || !sstate.is_iframe { |
| 157 | level = (level * q) + q_add; |
| 158 | } else { |
| 159 | level = level * (H263_DC_SCALES[quant as usize] as i16); |
| 160 | } |
| 161 | if level < -2048 { level = -2048; } |
| 162 | if level > 2047 { level = 2047; } |
| 163 | } |
| 164 | idx += run; |
| 165 | validate!(idx < 64); |
| 166 | let oidx = scan[idx as usize]; |
| 167 | blk[oidx] = level; |
| 168 | idx += 1; |
| 169 | if last { break; } |
| 170 | } |
| 171 | Ok(()) |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | fn decode_mv_component(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<i16> { |
| 176 | let code = br.read_cb(mv_cb)? as i16; |
| 177 | if code == 0 { return Ok(0) } |
| 178 | if !br.read_bool()? { |
| 179 | Ok(code) |
| 180 | } else { |
| 181 | Ok(-code) |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | fn decode_mv(br: &mut BitReader, mv_cb: &Codebook<u8>) -> DecoderResult<MV> { |
| 186 | let xval = decode_mv_component(br, mv_cb)?; |
| 187 | let yval = decode_mv_component(br, mv_cb)?; |
| 188 | //println!(" MV {},{} @ {}", xval, yval, br.tell()); |
| 189 | Ok(MV::new(xval, yval)) |
| 190 | } |
| 191 | |
| 192 | impl<'a> BlockDecoder for RealVideo20BR<'a> { |
| 193 | |
| 194 | #[allow(unused_variables)] |
| 195 | fn decode_pichdr(&mut self) -> DecoderResult<PicInfo> { |
| 196 | self.slice_no = 0; |
| 197 | println!("decoding picture header size {}", if self.num_slices > 1 { self.slice_off[1] } else { ((self.br.tell() as u32) + (self.br.left() as u32))/8 }); |
| 198 | let shdr = self.read_slice_header()?; |
| 199 | println!("slice ends @ {}\n", self.br.tell()); |
| 200 | // self.slice_no += 1; |
| 201 | validate!((shdr.mb_x == 0) && (shdr.mb_y == 0)); |
| 202 | /* let mb_count; |
| 203 | if self.slice_no < self.num_slices { |
| 204 | let pos = self.br.tell(); |
| 205 | let shdr2 = self.read_slice_header()?; |
| 206 | self.br.seek(pos as u32)?; |
| 207 | mb_count = shdr2.mb_pos - shdr.mb_pos; |
| 208 | } else { |
| 209 | mb_count = self.mb_w * self.mb_h; |
| 210 | }*/ |
| 211 | |
| 212 | let plusinfo = Some(PlusInfo::new(shdr.ftype == Type::I, false, false, false)); |
| 213 | let picinfo = PicInfo::new(shdr.w, shdr.h, shdr.ftype, false, false, shdr.qscale, 0, None, plusinfo); |
| 214 | Ok(picinfo) |
| 215 | } |
| 216 | |
| 217 | #[allow(unused_variables)] |
| 218 | fn decode_slice_header(&mut self, info: &PicInfo) -> DecoderResult<SliceInfo> { |
| 219 | //println!("read slice {} header", self.slice_no); |
| 220 | let shdr = self.read_slice_header()?; |
| 221 | self.slice_no += 1; |
| 222 | let mb_count; |
| 223 | if self.slice_no < self.num_slices { |
| 224 | let pos = self.br.tell(); |
| 225 | let shdr2 = self.read_slice_header()?; |
| 226 | mb_count = shdr2.mb_pos - shdr.mb_pos; |
| 227 | self.br.seek(pos as u32)?; |
| 228 | } else { |
| 229 | mb_count = self.mb_w * self.mb_h - shdr.mb_pos; |
| 230 | } |
| 231 | let ret = SliceInfo::new(shdr.mb_x, shdr.mb_y, shdr.mb_pos + mb_count, shdr.qscale); |
| 232 | |
| 233 | Ok(ret) |
| 234 | } |
| 235 | |
| 236 | fn decode_block_header(&mut self, info: &PicInfo, slice: &SliceInfo, sstate: &SliceState) -> DecoderResult<BlockInfo> { |
| 237 | let mut br = &mut self.br; |
| 238 | let mut q = slice.get_quant(); |
| 239 | match info.get_mode() { |
| 240 | Type::I => { |
| 241 | let mut cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; |
| 242 | while cbpc == 8 { cbpc = br.read_cb(&self.tables.intra_mcbpc_cb)?; } |
| 243 | let mut acpred = ACPredMode::None; |
| 244 | if let Some(ref pi) = info.plusinfo { |
| 245 | if pi.aic { |
| 246 | let acpp = br.read_bool()?; |
| 247 | acpred = ACPredMode::DC; |
| 248 | println!(" acp {} @ {}", acpp as u8, br.tell()); |
| 249 | if acpp { |
| 250 | acpred = if br.read_bool()? { ACPredMode::Hor } else { ACPredMode::Ver }; |
| 251 | } |
| 252 | } |
| 253 | println!(" @ {}", br.tell()); |
| 254 | } |
| 255 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 256 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 257 | let dquant = (cbpc & 4) != 0; |
| 258 | if dquant { |
| 259 | let idx = br.read(2)? as usize; |
| 260 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 261 | } |
| 262 | println!(" MB {},{} CBP {:X} @ {}", sstate.mb_x, sstate.mb_y, cbp, br.tell()); |
| 263 | let mut binfo = BlockInfo::new(Type::I, cbp, q); |
| 264 | binfo.set_acpred(acpred); |
| 265 | Ok(binfo) |
| 266 | }, |
| 267 | Type::P => { |
| 268 | if br.read_bool()? { |
| 269 | return Ok(BlockInfo::new(Type::Skip, 0, info.get_quant())); |
| 270 | } |
| 271 | let mut cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; |
| 272 | while cbpc == 20 { cbpc = br.read_cb(&self.tables.inter_mcbpc_cb)?; } |
| 273 | let is_intra = (cbpc & 0x04) != 0; |
| 274 | let dquant = (cbpc & 0x08) != 0; |
| 275 | let is_4x4 = (cbpc & 0x10) != 0; |
| 276 | if is_intra { |
| 277 | let cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 278 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 279 | if dquant { |
| 280 | let idx = br.read(2)? as usize; |
| 281 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 282 | } |
| 283 | let binfo = BlockInfo::new(Type::I, cbp, q); |
| 284 | return Ok(binfo); |
| 285 | } |
| 286 | |
| 287 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 288 | // if /* !aiv && */(cbpc & 3) != 3 { |
| 289 | cbpy ^= 0xF; |
| 290 | // } |
| 291 | let cbp = (cbpy << 2) | (cbpc & 3); |
| 292 | if dquant { |
| 293 | let idx = br.read(2)? as usize; |
| 294 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 295 | } |
| 296 | println!(" MB {}.{} cbp = {:X}", sstate.mb_x, sstate.mb_y, cbp); |
| 297 | let mut binfo = BlockInfo::new(Type::P, cbp, q); |
| 298 | if !is_4x4 { |
| 299 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; |
| 300 | binfo.set_mv(&mvec); |
| 301 | } else { |
| 302 | let mvec: [MV; 4] = [ |
| 303 | decode_mv(br, &self.tables.mv_cb)?, |
| 304 | decode_mv(br, &self.tables.mv_cb)?, |
| 305 | decode_mv(br, &self.tables.mv_cb)?, |
| 306 | decode_mv(br, &self.tables.mv_cb)? |
| 307 | ]; |
| 308 | binfo.set_mv(&mvec); |
| 309 | } |
| 310 | Ok(binfo) |
| 311 | }, |
| 312 | _ => { // B |
| 313 | let mut mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize; |
| 314 | while mbtype == 14 { mbtype = br.read_cb(&self.tables.mbtype_b_cb)? as usize; } |
| 315 | |
| 316 | let is_coded = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_CODED) != 0; |
| 317 | let is_intra = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_INTRA) != 0; |
| 318 | let dquant = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_DQUANT) != 0; |
| 319 | let is_fwd = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_FORWARD) != 0; |
| 320 | let is_bwd = (H263_MBTYPE_B_CAPS[mbtype] & H263_MBB_CAP_BACKWARD) != 0; |
| 321 | |
| 322 | let cbp = if is_coded { |
| 323 | let cbpc = br.read_cb(&self.tables.cbpc_b_cb)?; |
| 324 | let mut cbpy = br.read_cb(&self.tables.cbpy_cb)?; |
| 325 | if !is_intra { cbpy ^= 0xF; } |
| 326 | (cbpy << 2) | (cbpc & 3) |
| 327 | } else { 0 }; |
| 328 | |
| 329 | if dquant { |
| 330 | let idx = br.read(2)? as usize; |
| 331 | q = ((q as i16) + (H263_DQUANT_TAB[idx] as i16)) as u8; |
| 332 | } |
| 333 | println!(" MB B {}.{} cbp = {:X} @ {} ({} {})", sstate.mb_x, sstate.mb_y, cbp, br.tell(), mbtype, is_intra); |
| 334 | |
| 335 | if is_intra { |
| 336 | let binfo = BlockInfo::new(Type::I, cbp, q); |
| 337 | return Ok(binfo); |
| 338 | } |
| 339 | |
| 340 | let mut binfo = BlockInfo::new(Type::B, cbp, q); |
| 341 | if is_fwd { |
| 342 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; |
| 343 | binfo.set_mv(&mvec); |
| 344 | } |
| 345 | if is_bwd { |
| 346 | let mvec: [MV; 1] = [decode_mv(br, &self.tables.mv_cb)?]; |
| 347 | binfo.set_b_mv(&mvec); |
| 348 | } |
| 349 | Ok(binfo) |
| 350 | }, |
| 351 | } |
| 352 | } |
| 353 | |
| 354 | fn decode_block_intra(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 355 | self.decode_block(sstate, quant, true, coded, blk, if no < 4 { 0 } else { no - 3 }, info.get_acpred()) |
| 356 | } |
| 357 | |
| 358 | #[allow(unused_variables)] |
| 359 | fn decode_block_inter(&mut self, info: &BlockInfo, sstate: &SliceState, quant: u8, no: usize, coded: bool, blk: &mut [i16; 64]) -> DecoderResult<()> { |
| 360 | self.decode_block(sstate, quant, false, coded, blk, if no < 4 { 0 } else { no - 3 }, ACPredMode::None) |
| 361 | } |
| 362 | |
| 363 | fn is_slice_end(&mut self) -> bool { false } |
| 364 | } |
| 365 | |
| 366 | impl<'a> RealVideo20BR<'a> { |
| 367 | #[allow(unused_variables)] |
| 368 | fn read_slice_header(&mut self) -> DecoderResult<RV20SliceInfo> { |
| 369 | validate!(self.slice_no < self.num_slices); |
| 370 | |
| 371 | let mut br = &mut self.br; |
| 372 | br.seek(self.slice_off[self.slice_no] * 8)?; |
| 373 | //println!(" slice at off {}", br.tell()); |
| 374 | |
| 375 | let frm_type = br.read(2)?; |
| 376 | let ftype = match frm_type { |
| 377 | 0 | 1 => { Type::I }, |
| 378 | 2 => { Type::P }, |
| 379 | _ => { Type::B }, |
| 380 | }; |
| 381 | |
| 382 | let marker = br.read(1)?; |
| 383 | validate!(marker == 0); |
| 384 | let qscale = br.read(5)? as u8; |
| 385 | validate!(qscale > 0); |
| 386 | if self.minor_ver >= 2 { |
| 387 | br.skip(1)?; // loop filter |
| 388 | } |
| 389 | let seq = if self.minor_ver <= 1 { |
| 390 | br.read(8)? << 7 |
| 391 | } else { |
| 392 | br.read(13)? << 2 |
| 393 | }; |
| 394 | let w; |
| 395 | let h; |
| 396 | if self.rpr.present { |
| 397 | let rpr = br.read(self.rpr.bits)? as usize; |
| 398 | if rpr == 0 { |
| 399 | w = self.w; |
| 400 | h = self.h; |
| 401 | } else { |
| 402 | w = self.rpr.widths[rpr - 1]; |
| 403 | h = self.rpr.heights[rpr - 1]; |
| 404 | validate!((w != 0) && (h != 0)); |
| 405 | } |
| 406 | } else { |
| 407 | w = self.w; |
| 408 | h = self.h; |
| 409 | } |
| 410 | |
| 411 | let mb_pos = br.read(self.mb_pos_bits)? as usize; |
| 412 | let mb_x = mb_pos % self.mb_w; |
| 413 | let mb_y = mb_pos / self.mb_w; |
| 414 | |
| 415 | br.skip(1)?; // no rounding |
| 416 | |
| 417 | if (self.minor_ver <= 1) && (frm_type == 3) { |
| 418 | br.skip(5)?; |
| 419 | } |
| 420 | println!("slice q {} mb {},{}", qscale, mb_x, mb_y); |
| 421 | |
| 422 | Ok(RV20SliceInfo::new(ftype, qscale, mb_x, mb_y, mb_pos, w, h)) |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | impl RealVideo20Decoder { |
| 427 | fn new() -> Self { |
| 428 | let mut coderead = H263ShortCodeReader::new(H263_INTRA_MCBPC); |
| 429 | let intra_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 430 | let mut coderead = H263ShortCodeReader::new(H263_INTER_MCBPC); |
| 431 | let inter_mcbpc_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 432 | let mut coderead = H263ShortCodeReader::new(H263_MBTYPE_B); |
| 433 | let mbtype_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 434 | let mut coderead = H263ShortCodeReader::new(H263_CBPY); |
| 435 | let cbpy_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 436 | let mut coderead = H263ShortCodeReader::new(H263_CBPC_B); |
| 437 | let cbpc_b_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 438 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES); |
| 439 | let rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 440 | let mut coderead = H263RLCodeReader::new(H263_RL_CODES_AIC); |
| 441 | let aic_rl_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 442 | let mut coderead = H263ShortCodeReader::new(H263_MV); |
| 443 | let mv_cb = Codebook::new(&mut coderead, CodebookMode::MSB).unwrap(); |
| 444 | |
| 445 | let tables = Tables { |
| 446 | intra_mcbpc_cb: intra_mcbpc_cb, |
| 447 | inter_mcbpc_cb: inter_mcbpc_cb, |
| 448 | mbtype_b_cb: mbtype_b_cb, |
| 449 | cbpy_cb: cbpy_cb, |
| 450 | cbpc_b_cb: cbpc_b_cb, |
| 451 | rl_cb: rl_cb, |
| 452 | aic_rl_cb: aic_rl_cb, |
| 453 | mv_cb: mv_cb, |
| 454 | }; |
| 455 | |
| 456 | RealVideo20Decoder{ |
| 457 | info: Rc::new(DUMMY_CODEC_INFO), |
| 458 | dec: H263BaseDecoder::new(false), |
| 459 | tables: tables, |
| 460 | w: 0, |
| 461 | h: 0, |
| 462 | minor_ver: 0, |
| 463 | rpr: RPRInfo { present: false, bits: 0, widths: [0; 8], heights: [0; 8] }, |
| 464 | bdsp: H263BlockDSP::new(), |
| 465 | } |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | impl NADecoder for RealVideo20Decoder { |
| 470 | #[allow(unused_variables)] |
| 471 | fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()> { |
| 472 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
| 473 | let w = vinfo.get_width(); |
| 474 | let h = vinfo.get_height(); |
| 475 | let fmt = formats::YUV420_FORMAT; |
| 476 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, fmt)); |
| 477 | self.info = Rc::new(NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata())); |
| 478 | self.w = w; |
| 479 | self.h = h; |
| 480 | |
| 481 | let edata = info.get_extradata().unwrap(); |
| 482 | let src: &[u8] = &edata; |
| 483 | let ver = ((src[4] as u32) << 12) | ((src[5] as u32) << 4) | ((src[6] as u32) >> 4); |
| 484 | let maj_ver = ver >> 16; |
| 485 | let min_ver = (ver >> 8) & 0xFF; |
| 486 | let mic_ver = ver & 0xFF; |
| 487 | println!("ver {:06X}", ver); |
| 488 | validate!(maj_ver == 2); |
| 489 | self.minor_ver = min_ver as u8; |
| 490 | let rprb = src[1] & 7; |
| 491 | if rprb == 0 { |
| 492 | self.rpr.present = false; |
| 493 | } else { |
| 494 | self.rpr.present = true; |
| 495 | self.rpr.bits = ((rprb >> 1) + 1) as u8; |
| 496 | for i in 4..(src.len()/2) { |
| 497 | self.rpr.widths [i - 4] = (src[i * 2] as usize) * 4; |
| 498 | self.rpr.heights[i - 4] = (src[i * 2 + 1] as usize) * 4; |
| 499 | } |
| 500 | } |
| 501 | Ok(()) |
| 502 | } else { |
| 503 | Err(DecoderError::InvalidData) |
| 504 | } |
| 505 | } |
| 506 | fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 507 | let src = pkt.get_buffer(); |
| 508 | |
| 509 | println!(" decode frame size {}, {} slices", src.len(), src[0]+1); |
| 510 | let mut ibr = RealVideo20BR::new(&src, &self.tables, self.w, self.h, self.minor_ver, self.rpr); |
| 511 | |
| 512 | let bufinfo = self.dec.parse_frame(&mut ibr, &self.bdsp)?; |
| 513 | |
| 514 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); |
| 515 | frm.set_keyframe(self.dec.is_intra()); |
| 516 | frm.set_frame_type(self.dec.get_frame_type()); |
| 517 | Ok(Rc::new(RefCell::new(frm))) |
| 518 | } |
| 519 | } |
| 520 | |
| 521 | struct MBB { blocks: usize, bits: u8 } |
| 522 | const H263_MBB: &[MBB; 7] = &[ |
| 523 | MBB{ blocks: 47, bits: 6 }, |
| 524 | MBB{ blocks: 98, bits: 7 }, |
| 525 | MBB{ blocks: 395, bits: 9 }, |
| 526 | MBB{ blocks: 1583, bits: 11 }, |
| 527 | MBB{ blocks: 6335, bits: 13 }, |
| 528 | MBB{ blocks: 9215, bits: 14 }, |
| 529 | MBB{ blocks: 65536, bits: 14 }, |
| 530 | ]; |
| 531 | |
| 532 | pub fn get_decoder() -> Box<NADecoder> { |
| 533 | Box::new(RealVideo20Decoder::new()) |
| 534 | } |
| 535 | |
| 536 | #[cfg(test)] |
| 537 | mod test { |
| 538 | use test::dec_video::test_file_decoding; |
| 539 | #[test] |
| 540 | fn test_rv20() { |
| 541 | test_file_decoding("realmedia", "assets/RV/rv20_svt_atrc_640x352_realproducer_plus_8.51.rm", None, true, false, Some("rv20")); |
| 542 | // test_file_decoding("realmedia", "assets/RV/rv20_cook_640x352_realproducer_plus_8.51.rm", /*None*/Some(1000), true, false, Some("rv20")); |
| 543 | } |
| 544 | } |