| 1 | use nihav_core::io::byteio::{ByteReader,MemoryReader}; |
| 2 | use nihav_core::io::bitreader::*; |
| 3 | use nihav_core::io::codebook::*; |
| 4 | use nihav_core::codecs::*; |
| 5 | use nihav_codec_support::codecs::ZIGZAG; |
| 6 | |
| 7 | const W1: i32 = 2841; |
| 8 | const W2: i32 = 2676; |
| 9 | const W3: i32 = 2408; |
| 10 | const W5: i32 = 1609; |
| 11 | const W6: i32 = 1108; |
| 12 | const W7: i32 = 565; |
| 13 | const W8: i32 = 181; |
| 14 | |
| 15 | const ROW_SHIFT: u8 = 8; |
| 16 | const COL_SHIFT: u8 = 14; |
| 17 | |
| 18 | #[allow(clippy::erasing_op)] |
| 19 | fn idct_row(row: &mut [i16]) { |
| 20 | let in0 = ((i32::from(row[0])) << 11) + (1 << (ROW_SHIFT - 1)); |
| 21 | let in1 = (i32::from(row[4])) << 11; |
| 22 | let in2 = i32::from(row[6]); |
| 23 | let in3 = i32::from(row[2]); |
| 24 | let in4 = i32::from(row[1]); |
| 25 | let in5 = i32::from(row[7]); |
| 26 | let in6 = i32::from(row[5]); |
| 27 | let in7 = i32::from(row[3]); |
| 28 | |
| 29 | let tmp = W7 * (in4 + in5); |
| 30 | let a4 = tmp + (W1 - W7) * in4; |
| 31 | let a5 = tmp - (W1 + W7) * in5; |
| 32 | |
| 33 | let tmp = W3 * (in6 + in7); |
| 34 | let a6 = tmp - (W3 - W5) * in6; |
| 35 | let a7 = tmp - (W3 + W5) * in7; |
| 36 | |
| 37 | let tmp = in0 + in1; |
| 38 | |
| 39 | let a0 = in0 - in1; |
| 40 | let t1 = W6 * (in2 + in3); |
| 41 | let a2 = t1 - (W2 + W6) * in2; |
| 42 | let a3 = t1 + (W2 - W6) * in3; |
| 43 | let b1 = a4 + a6; |
| 44 | |
| 45 | let b4 = a4 - a6; |
| 46 | let t2 = a5 - a7; |
| 47 | let b6 = a5 + a7; |
| 48 | let b7 = tmp + a3; |
| 49 | let b5 = tmp - a3; |
| 50 | let b3 = a0 + a2; |
| 51 | let b0 = a0 - a2; |
| 52 | let b2 = (W8 * (b4 + t2) + 128) >> 8; |
| 53 | let b4 = (W8 * (b4 - t2) + 128) >> 8; |
| 54 | |
| 55 | row[0] = ((b7 + b1) >> ROW_SHIFT) as i16; |
| 56 | row[7] = ((b7 - b1) >> ROW_SHIFT) as i16; |
| 57 | row[1] = ((b3 + b2) >> ROW_SHIFT) as i16; |
| 58 | row[6] = ((b3 - b2) >> ROW_SHIFT) as i16; |
| 59 | row[2] = ((b0 + b4) >> ROW_SHIFT) as i16; |
| 60 | row[5] = ((b0 - b4) >> ROW_SHIFT) as i16; |
| 61 | row[3] = ((b5 + b6) >> ROW_SHIFT) as i16; |
| 62 | row[4] = ((b5 - b6) >> ROW_SHIFT) as i16; |
| 63 | } |
| 64 | |
| 65 | #[allow(clippy::erasing_op)] |
| 66 | #[allow(clippy::identity_op)] |
| 67 | fn idct_col(blk: &mut [i16; 64], off: usize) { |
| 68 | let in0 = ((i32::from(blk[off + 0*8])) << 8) + (1 << (COL_SHIFT - 1)); |
| 69 | let in1 = (i32::from(blk[off + 4*8])) << 8; |
| 70 | let in2 = i32::from(blk[off + 6*8]); |
| 71 | let in3 = i32::from(blk[off + 2*8]); |
| 72 | let in4 = i32::from(blk[off + 1*8]); |
| 73 | let in5 = i32::from(blk[off + 7*8]); |
| 74 | let in6 = i32::from(blk[off + 5*8]); |
| 75 | let in7 = i32::from(blk[off + 3*8]); |
| 76 | |
| 77 | let tmp = W7 * (in4 + in5); |
| 78 | let a4 = (tmp + (W1 - W7) * in4) >> 3; |
| 79 | let a5 = (tmp - (W1 + W7) * in5) >> 3; |
| 80 | |
| 81 | let tmp = W3 * (in6 + in7); |
| 82 | let a6 = (tmp - (W3 - W5) * in6) >> 3; |
| 83 | let a7 = (tmp - (W3 + W5) * in7) >> 3; |
| 84 | |
| 85 | let tmp = in0 + in1; |
| 86 | |
| 87 | let a0 = in0 - in1; |
| 88 | let t1 = W6 * (in2 + in3); |
| 89 | let a2 = (t1 - (W2 + W6) * in2) >> 3; |
| 90 | let a3 = (t1 + (W2 - W6) * in3) >> 3; |
| 91 | let b1 = a4 + a6; |
| 92 | |
| 93 | let b4 = a4 - a6; |
| 94 | let t2 = a5 - a7; |
| 95 | let b6 = a5 + a7; |
| 96 | let b7 = tmp + a3; |
| 97 | let b5 = tmp - a3; |
| 98 | let b3 = a0 + a2; |
| 99 | let b0 = a0 - a2; |
| 100 | let b2 = (W8 * (b4 + t2) + 128) >> 8; |
| 101 | let b4 = (W8 * (b4 - t2) + 128) >> 8; |
| 102 | |
| 103 | blk[off + 0*8] = ((b7 + b1) >> COL_SHIFT) as i16; |
| 104 | blk[off + 7*8] = ((b7 - b1) >> COL_SHIFT) as i16; |
| 105 | blk[off + 1*8] = ((b3 + b2) >> COL_SHIFT) as i16; |
| 106 | blk[off + 6*8] = ((b3 - b2) >> COL_SHIFT) as i16; |
| 107 | blk[off + 2*8] = ((b0 + b4) >> COL_SHIFT) as i16; |
| 108 | blk[off + 5*8] = ((b0 - b4) >> COL_SHIFT) as i16; |
| 109 | blk[off + 3*8] = ((b5 + b6) >> COL_SHIFT) as i16; |
| 110 | blk[off + 4*8] = ((b5 - b6) >> COL_SHIFT) as i16; |
| 111 | } |
| 112 | |
| 113 | fn idct(blk: &mut [i16; 64]) { |
| 114 | for i in 0..8 { idct_row(&mut blk[i*8..(i+1)*8]); } |
| 115 | for i in 0..8 { idct_col(blk, i); } |
| 116 | } |
| 117 | |
| 118 | fn put_block(blk: &[i16; 64], dst: &mut [u8], stride: usize) { |
| 119 | for (drow, srow) in dst.chunks_mut(stride).zip(blk.chunks(8)) { |
| 120 | for (del, &pix) in drow.iter_mut().zip(srow.iter()) { |
| 121 | *del = pix.max(0).min(255) as u8; |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | #[derive(Clone,Copy,Default)] |
| 127 | struct ComponentInfo { |
| 128 | component_id: usize, |
| 129 | dc_table_id: usize, |
| 130 | ac_table_id: usize, |
| 131 | } |
| 132 | |
| 133 | #[derive(Debug,PartialEq)] |
| 134 | #[allow(dead_code)] |
| 135 | enum JPEGType { |
| 136 | None, |
| 137 | Baseline, |
| 138 | Extended, |
| 139 | Progressive, |
| 140 | Lossless, |
| 141 | Differential, |
| 142 | DiffProgressive, |
| 143 | DiffLossless, |
| 144 | JPEGLS, |
| 145 | } |
| 146 | |
| 147 | struct JPEGDecoder { |
| 148 | info: NACodecInfoRef, |
| 149 | quant: [[i16; 64]; 4], |
| 150 | qselect: [u8; MAX_CHROMATONS], |
| 151 | comp_id: [u8; MAX_CHROMATONS], |
| 152 | subsamp: [u8; MAX_CHROMATONS], |
| 153 | codebook: [[Option<Codebook<u8>>; 4]; 2], |
| 154 | width: usize, |
| 155 | height: usize, |
| 156 | depth: u8, |
| 157 | buf: Vec<u8>, |
| 158 | } |
| 159 | |
| 160 | fn read_dc(br: &mut BitReader, cb: &Codebook<u8>) -> DecoderResult<i16> { |
| 161 | let cat = br.read_cb(cb)?; |
| 162 | if cat == 0 { |
| 163 | Ok(0) |
| 164 | } else { |
| 165 | validate!(cat < 12); |
| 166 | let add_bits = br.read(cat)? as i16; |
| 167 | let pivot = 1 << (cat - 1); |
| 168 | if add_bits < pivot { |
| 169 | Ok(add_bits + 1 - pivot * 2) |
| 170 | } else { |
| 171 | Ok(add_bits) |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | fn read_ac(br: &mut BitReader, cb: &Codebook<u8>) -> DecoderResult<(usize, i16)> { |
| 177 | let val = br.read_cb(cb)?; |
| 178 | let run = usize::from(val >> 4); |
| 179 | let cat = val & 0xF; |
| 180 | let level = if cat != 0 { |
| 181 | validate!(cat < 11); |
| 182 | let add_bits = br.read(cat)? as i16; |
| 183 | let pivot = 1 << (cat - 1); |
| 184 | if add_bits < pivot { |
| 185 | add_bits + 1 - pivot * 2 |
| 186 | } else { |
| 187 | add_bits |
| 188 | } |
| 189 | } else { |
| 190 | validate!(run == 0 || run == 15); |
| 191 | 0 |
| 192 | }; |
| 193 | Ok((run, level)) |
| 194 | } |
| 195 | |
| 196 | fn read_block(br: &mut BitReader, blk: &mut [i16; 64], dc_cb: &Codebook<u8>, ac_cb: &Codebook<u8>, ss: usize, se: usize, qmat: &[i16; 64]) -> DecoderResult<()> { |
| 197 | if ss == 0 { |
| 198 | blk[0] = read_dc(br, dc_cb)?; |
| 199 | blk[0] *= qmat[0]; |
| 200 | } |
| 201 | let mut idx = 1; |
| 202 | while idx <= se { |
| 203 | let (run, level) = read_ac(br, ac_cb)?; |
| 204 | if run == 0 && level == 0 { |
| 205 | break; |
| 206 | } |
| 207 | idx += run; |
| 208 | validate!(idx < 64); |
| 209 | blk[ZIGZAG[idx]] = level * qmat[idx]; |
| 210 | idx += 1; |
| 211 | } |
| 212 | Ok(()) |
| 213 | } |
| 214 | |
| 215 | impl JPEGDecoder { |
| 216 | fn new() -> Self { |
| 217 | let dummy_info = NACodecInfo::new_dummy(); |
| 218 | |
| 219 | Self { |
| 220 | info: dummy_info, |
| 221 | quant: [[0; 64]; 4], |
| 222 | qselect: [0; MAX_CHROMATONS], |
| 223 | subsamp: [0; MAX_CHROMATONS], |
| 224 | comp_id: [0; MAX_CHROMATONS], |
| 225 | codebook: [[None, None, None, None], [None, None, None, None]], |
| 226 | width: 0, |
| 227 | height: 0, |
| 228 | depth: 0, |
| 229 | buf: Vec::new(), |
| 230 | } |
| 231 | } |
| 232 | fn reset(&mut self) { |
| 233 | self.quant = [[0; 64]; 4]; |
| 234 | self.codebook = [[None, None, None, None], [None, None, None, None]]; |
| 235 | self.width = 0; |
| 236 | self.height = 0; |
| 237 | self.depth = 0; |
| 238 | } |
| 239 | |
| 240 | #[allow(clippy::many_single_char_names)] |
| 241 | fn parse_sof(&mut self, br: &mut ByteReader) -> DecoderResult<NABufferType> { |
| 242 | validate!(self.width == 0); |
| 243 | |
| 244 | let len = br.read_u16be()? as usize; |
| 245 | validate!(len >= 11); |
| 246 | let p = br.read_byte()?; |
| 247 | validate!(p > 2); |
| 248 | if p != 8 { |
| 249 | return Err(DecoderError::NotImplemented); |
| 250 | } |
| 251 | let y = br.read_u16be()? as usize; |
| 252 | let x = br.read_u16be()? as usize; |
| 253 | validate!(x > 0); |
| 254 | if y == 0 { |
| 255 | return Err(DecoderError::NotImplemented); |
| 256 | } |
| 257 | self.depth = p; |
| 258 | self.width = x; |
| 259 | self.height = y; |
| 260 | let nf = br.read_byte()? as usize; |
| 261 | validate!(nf > 0); |
| 262 | validate!(len == 8 + nf * 3); |
| 263 | if nf > MAX_CHROMATONS { |
| 264 | return Err(DecoderError::NotImplemented); |
| 265 | } |
| 266 | let mut max_h = 0; |
| 267 | let mut max_v = 0; |
| 268 | for i in 0..nf { |
| 269 | let c = br.read_byte()?; |
| 270 | self.comp_id[i] = c; |
| 271 | let hv = br.read_byte()?; |
| 272 | let t = br.read_byte()?; |
| 273 | validate!(t < 4); |
| 274 | self.qselect[i] = t; |
| 275 | self.subsamp[i] = hv; |
| 276 | let hs = hv >> 4; |
| 277 | validate!(hs == 1 || hs == 2); |
| 278 | let vs = hv & 0xF; |
| 279 | validate!(vs == 1 || vs == 2); |
| 280 | max_h = max_h.max(hs); |
| 281 | max_v = max_v.max(vs); |
| 282 | } |
| 283 | let mut chromatons = [None; MAX_CHROMATONS]; |
| 284 | for (i, chr) in chromatons[..nf].iter_mut().enumerate() { |
| 285 | let h_ss = match max_h / (self.subsamp[i] >> 4) { |
| 286 | 1 => 0, |
| 287 | 2 => 1, |
| 288 | _ => unreachable!(), |
| 289 | }; |
| 290 | let v_ss = match max_v / (self.subsamp[i] & 0xF) { |
| 291 | 1 => 0, |
| 292 | 2 => 1, |
| 293 | _ => return Err(DecoderError::InvalidData), |
| 294 | }; |
| 295 | |
| 296 | *chr = Some(NAPixelChromaton { |
| 297 | h_ss, v_ss, |
| 298 | packed: false, |
| 299 | depth: p, |
| 300 | shift: 0, |
| 301 | comp_offs: i as u8, |
| 302 | next_elem: (p + 7) >> 3, |
| 303 | }); |
| 304 | } |
| 305 | for i in 0..nf { |
| 306 | for j in i + 1..nf { |
| 307 | validate!(self.comp_id[i] != self.comp_id[j]); |
| 308 | } |
| 309 | } |
| 310 | let formaton = NAPixelFormaton { |
| 311 | model: ColorModel::YUV(YUVSubmodel::YUVJ), |
| 312 | components: nf as u8, |
| 313 | comp_info: chromatons, |
| 314 | elem_size: 0, |
| 315 | be: false, |
| 316 | alpha: nf == 2 || nf == 4, |
| 317 | palette: false, |
| 318 | }; |
| 319 | let vinfo = NAVideoInfo::new(x, y, false, formaton); |
| 320 | Ok(alloc_video_buffer(vinfo, 4)?) |
| 321 | } |
| 322 | |
| 323 | fn decode_scan(&mut self, src: &[u8], mut buf: NAVideoBufferRef<u8>, ci: &[ComponentInfo], ss: usize, se: usize) -> DecoderResult<usize> { |
| 324 | let num_components = ci.len(); |
| 325 | let mut last_dc = [1024; MAX_CHROMATONS]; |
| 326 | let mut dc_cbs = Vec::with_capacity(num_components); |
| 327 | let mut ac_cbs = Vec::with_capacity(num_components); |
| 328 | let mut qmats = [&self.quant[0]; MAX_CHROMATONS]; |
| 329 | for (i, cinfo) in ci.iter().enumerate() { |
| 330 | dc_cbs.push(if let Some(ref cb) = self.codebook[0][cinfo.dc_table_id] { |
| 331 | cb |
| 332 | } else { unreachable!(); }); |
| 333 | ac_cbs.push(if let Some(ref cb) = self.codebook[1][cinfo.ac_table_id] { |
| 334 | cb |
| 335 | } else { unreachable!(); }); |
| 336 | qmats[i] = &self.quant[self.qselect[cinfo.component_id] as usize]; |
| 337 | } |
| 338 | |
| 339 | let frm = NASimpleVideoFrame::from_video_buf(&mut buf).unwrap(); |
| 340 | |
| 341 | let mut br = BitReader::new(src, BitReaderMode::BE); |
| 342 | |
| 343 | let mut offs = frm.offset; |
| 344 | let mut nblks = [0; MAX_CHROMATONS]; |
| 345 | let mut xstep = [0; MAX_CHROMATONS]; |
| 346 | let mut ystep = [0; MAX_CHROMATONS]; |
| 347 | let mut hstep = 8; |
| 348 | let mut vstep = 8; |
| 349 | for i in 0..num_components { |
| 350 | let hs = (self.subsamp[i] >> 4) as usize; |
| 351 | let vs = (self.subsamp[i] & 0xF) as usize; |
| 352 | hstep = hstep.max(hs * 8); |
| 353 | vstep = vstep.max(vs * 8); |
| 354 | nblks[i] = hs * vs; |
| 355 | xstep[i] = hs * 8; |
| 356 | ystep[i] = vs * 8; |
| 357 | } |
| 358 | |
| 359 | let mut blocks; |
| 360 | for _y in (0..self.height).step_by(vstep) { |
| 361 | for x in 0..(self.width + hstep - 1) / hstep { |
| 362 | for i in 0..num_components { |
| 363 | blocks = [[0; 64]; 4]; |
| 364 | for blk in blocks[..nblks[i]].iter_mut() { |
| 365 | read_block(&mut br, blk, dc_cbs[i], ac_cbs[i], ss, se, qmats[i])?; |
| 366 | blk[0] += last_dc[i]; |
| 367 | last_dc[i] = blk[0]; |
| 368 | idct(blk); |
| 369 | } |
| 370 | match self.subsamp[i] { |
| 371 | 0x11 => { |
| 372 | put_block(&blocks[0], &mut frm.data[offs[i] + x * 8..], frm.stride[i]); |
| 373 | }, |
| 374 | 0x21 => { |
| 375 | put_block(&blocks[0], &mut frm.data[offs[i] + x * 16..], frm.stride[i]); |
| 376 | put_block(&blocks[1], &mut frm.data[offs[i] + x * 16 + 8..], frm.stride[i]); |
| 377 | }, |
| 378 | 0x12 => { |
| 379 | put_block(&blocks[0], &mut frm.data[offs[i] + x * 8..], frm.stride[i]); |
| 380 | put_block(&blocks[1], &mut frm.data[offs[i] + x * 8 + frm.stride[i] * 8..], frm.stride[i]); |
| 381 | }, |
| 382 | 0x22 => { |
| 383 | for j in 0..4 { |
| 384 | put_block(&blocks[j], &mut frm.data[offs[i] + x * 16 + (j & 1) * 8 + (j >> 1) * 8 * frm.stride[i]..], frm.stride[i]); |
| 385 | } |
| 386 | }, |
| 387 | _ => unreachable!(), |
| 388 | }; |
| 389 | } |
| 390 | } |
| 391 | for i in 0..num_components { |
| 392 | offs[i] += frm.stride[i] * ystep[i]; |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | Ok((br.tell() + 7) / 8) |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | struct HuffDescReader<'a> { |
| 401 | codes: &'a [u16], |
| 402 | bits: &'a [u8], |
| 403 | syms: &'a [u8], |
| 404 | } |
| 405 | |
| 406 | impl<'a> CodebookDescReader<u8> for HuffDescReader<'a> { |
| 407 | fn bits(&mut self, idx: usize) -> u8 { self.bits[idx] } |
| 408 | fn code(&mut self, idx: usize) -> u32 { u32::from(self.codes[idx]) } |
| 409 | fn sym (&mut self, idx: usize) -> u8 { self.syms[idx] } |
| 410 | fn len(&mut self) -> usize { self.syms.len() } |
| 411 | } |
| 412 | |
| 413 | fn generate_cb(lens: &[u8; 16], syms: &[u8]) -> DecoderResult<Codebook<u8>> { |
| 414 | let mut codes = [0; 256]; |
| 415 | let mut bits = [0; 256]; |
| 416 | |
| 417 | let mut iter = bits.iter_mut(); |
| 418 | for (i, &len) in lens.iter().enumerate() { |
| 419 | for _ in 0..len { |
| 420 | *iter.next().unwrap() = (i + 1) as u8; |
| 421 | } |
| 422 | } |
| 423 | let mut code = 0; |
| 424 | let mut si = bits[0]; |
| 425 | let mut idx = 0; |
| 426 | while idx < syms.len() { |
| 427 | while idx < syms.len() && bits[idx] == si { |
| 428 | codes[idx] = code; |
| 429 | code += 1; |
| 430 | idx += 1; |
| 431 | } |
| 432 | while idx < syms.len() && bits[idx] != si { |
| 433 | code <<= 1; |
| 434 | si += 1; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | let mut cbr = HuffDescReader { codes: &codes, bits: &bits, syms }; |
| 439 | Ok(Codebook::new(&mut cbr, CodebookMode::MSB)?) |
| 440 | } |
| 441 | |
| 442 | fn build_default_cb(dc: bool, idx: usize) -> DecoderResult<Codebook<u8>> { |
| 443 | if dc { |
| 444 | generate_cb(&DC_LENS[idx], &DC_SYMS) |
| 445 | } else { |
| 446 | generate_cb(&AC_LENS[idx], &AC_SYMS[idx]) |
| 447 | } |
| 448 | } |
| 449 | |
| 450 | impl NADecoder for JPEGDecoder { |
| 451 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
| 452 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { |
| 453 | let w = vinfo.get_width(); |
| 454 | let h = vinfo.get_height(); |
| 455 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, YUV420_FORMAT)); |
| 456 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); |
| 457 | Ok(()) |
| 458 | } else { |
| 459 | Err(DecoderError::InvalidData) |
| 460 | } |
| 461 | } |
| 462 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 463 | let src = pkt.get_buffer(); |
| 464 | if src.len() <= 4 { return Err(DecoderError::ShortData); } |
| 465 | |
| 466 | let mut bufinfo = NABufferType::None; |
| 467 | let mut mr = MemoryReader::new_read(&src); |
| 468 | let mut br = ByteReader::new(&mut mr); |
| 469 | let start_tag = br.read_u16be()?; |
| 470 | validate!(start_tag == 0xFFD8); |
| 471 | |
| 472 | let mut jtype = JPEGType::None; |
| 473 | let mut arith = false; |
| 474 | self.reset(); |
| 475 | loop { |
| 476 | let tag = br.read_u16be()?; |
| 477 | match tag { |
| 478 | 0xFFC0 => { //baseline DCT header |
| 479 | jtype = JPEGType::Baseline; |
| 480 | arith = false; |
| 481 | bufinfo = self.parse_sof(&mut br)?; |
| 482 | }, |
| 483 | 0xFFC1 => { |
| 484 | jtype = JPEGType::Extended; |
| 485 | arith = false; |
| 486 | bufinfo = self.parse_sof(&mut br)?; |
| 487 | }, |
| 488 | 0xFFC2 => { |
| 489 | jtype = JPEGType::Progressive; |
| 490 | arith = false; |
| 491 | bufinfo = self.parse_sof(&mut br)?; |
| 492 | }, |
| 493 | 0xFFC3 => { |
| 494 | jtype = JPEGType::Lossless; |
| 495 | arith = false; |
| 496 | bufinfo = self.parse_sof(&mut br)?; |
| 497 | }, |
| 498 | 0xFFC5 => { |
| 499 | jtype = JPEGType::Differential; |
| 500 | arith = false; |
| 501 | bufinfo = self.parse_sof(&mut br)?; |
| 502 | }, |
| 503 | 0xFFC6 => { |
| 504 | jtype = JPEGType::DiffProgressive; |
| 505 | arith = false; |
| 506 | bufinfo = self.parse_sof(&mut br)?; |
| 507 | }, |
| 508 | 0xFFC7 => { |
| 509 | jtype = JPEGType::DiffLossless; |
| 510 | arith = false; |
| 511 | bufinfo = self.parse_sof(&mut br)?; |
| 512 | }, |
| 513 | 0xFFC8 => return Err(DecoderError::NotImplemented), |
| 514 | 0xFFC9 => { |
| 515 | jtype = JPEGType::Extended; |
| 516 | arith = true; |
| 517 | bufinfo = self.parse_sof(&mut br)?; |
| 518 | }, |
| 519 | 0xFFCA => { |
| 520 | jtype = JPEGType::Progressive; |
| 521 | arith = true; |
| 522 | bufinfo = self.parse_sof(&mut br)?; |
| 523 | }, |
| 524 | 0xFFCB => { |
| 525 | jtype = JPEGType::Lossless; |
| 526 | arith = true; |
| 527 | bufinfo = self.parse_sof(&mut br)?; |
| 528 | }, |
| 529 | 0xFFCD => { |
| 530 | jtype = JPEGType::Differential; |
| 531 | arith = true; |
| 532 | bufinfo = self.parse_sof(&mut br)?; |
| 533 | }, |
| 534 | 0xFFCE => { |
| 535 | jtype = JPEGType::DiffProgressive; |
| 536 | arith = true; |
| 537 | bufinfo = self.parse_sof(&mut br)?; |
| 538 | }, |
| 539 | 0xFFCF => { |
| 540 | jtype = JPEGType::DiffLossless; |
| 541 | arith = true; |
| 542 | bufinfo = self.parse_sof(&mut br)?; |
| 543 | }, |
| 544 | 0xFFC4 => { //huff table |
| 545 | validate!(!arith); |
| 546 | let len = u64::from(br.read_u16be()?); |
| 547 | validate!(len > 2); |
| 548 | let end = br.tell() + len - 2; |
| 549 | let mut lens = [0; 16]; |
| 550 | let mut syms = [0; 256]; |
| 551 | while br.tell() < end { |
| 552 | let tctn = br.read_byte()? as usize; |
| 553 | let tclass = tctn >> 4; |
| 554 | validate!(tclass < 2); |
| 555 | let id = tctn & 0xF; |
| 556 | validate!(id < 4); |
| 557 | br.read_buf(&mut lens)?; |
| 558 | let mut tot_len = 0usize; |
| 559 | for &el in lens.iter() { |
| 560 | tot_len += usize::from(el); |
| 561 | } |
| 562 | validate!(tot_len > 0 && tot_len <= 256); |
| 563 | br.read_buf(&mut syms[..tot_len])?; |
| 564 | self.codebook[tclass][id] = Some(generate_cb(&lens, &syms[..tot_len])?); |
| 565 | } |
| 566 | validate!(br.tell() == end); |
| 567 | }, |
| 568 | 0xFFCC => { // arith coding conditioning |
| 569 | return Err(DecoderError::NotImplemented); |
| 570 | } |
| 571 | 0xFFD0..=0xFFD7 => return Err(DecoderError::NotImplemented), |
| 572 | 0xFFD9 => break, |
| 573 | 0xFFDA => { //start of scan |
| 574 | let len = br.read_u16be()? as usize; |
| 575 | let ns = br.read_byte()? as usize; |
| 576 | validate!(len == ns * 2 + 6); |
| 577 | let mut ci = [ComponentInfo::default(); MAX_CHROMATONS]; |
| 578 | for info in ci[..ns].iter_mut() { |
| 579 | let id = br.read_byte()?; |
| 580 | let mut found = false; |
| 581 | for (i, &c_id) in self.comp_id.iter().enumerate() { |
| 582 | if c_id == id { |
| 583 | info.component_id = i; |
| 584 | found = true; |
| 585 | break; |
| 586 | } |
| 587 | } |
| 588 | validate!(found); |
| 589 | let tdta = br.read_byte()? as usize; |
| 590 | let dc_id = tdta >> 4; |
| 591 | validate!(dc_id < 4); |
| 592 | if self.codebook[0][dc_id].is_none() { |
| 593 | validate!(dc_id < 2); |
| 594 | self.codebook[0][dc_id] = Some(build_default_cb(true, dc_id)?); |
| 595 | } |
| 596 | let ac_id = tdta & 0xF; |
| 597 | validate!(ac_id < 4); |
| 598 | if self.codebook[1][ac_id].is_none() { |
| 599 | validate!(ac_id < 2); |
| 600 | self.codebook[1][ac_id] = Some(build_default_cb(false, ac_id)?); |
| 601 | } |
| 602 | info.dc_table_id = dc_id; |
| 603 | info.ac_table_id = ac_id; |
| 604 | } |
| 605 | let ss = br.read_byte()? as usize; |
| 606 | let se = br.read_byte()? as usize; |
| 607 | let ahal = br.read_byte()?; |
| 608 | let ah = ahal >> 4; |
| 609 | let al = ahal & 0xF; |
| 610 | match jtype { |
| 611 | JPEGType::Baseline | JPEGType::Extended => { |
| 612 | if arith { |
| 613 | return Err(DecoderError::NotImplemented); |
| 614 | } |
| 615 | validate!(ss == 0 && se == 63); |
| 616 | validate!(ah == 0 && al == 0); |
| 617 | if let Some(buf) = bufinfo.get_vbuf() { |
| 618 | let max_size = src.len() - (br.tell() as usize); |
| 619 | self.buf.clear(); |
| 620 | self.buf.reserve(max_size); |
| 621 | loop { |
| 622 | let b = br.read_byte()?; |
| 623 | if b != 0xFF { |
| 624 | self.buf.push(b); |
| 625 | } else { |
| 626 | let b2 = br.read_byte()?; |
| 627 | if b2 == 0 { |
| 628 | self.buf.push(b); |
| 629 | } else { |
| 630 | br.seek(std::io::SeekFrom::Current(-2))?; |
| 631 | break; |
| 632 | } |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | let mut data = Vec::new(); |
| 637 | std::mem::swap(&mut self.buf, &mut data); |
| 638 | let ret = self.decode_scan(&data, buf, &ci[..ns], ss, se); |
| 639 | std::mem::swap(&mut self.buf, &mut data); |
| 640 | if let Err(err) = ret { |
| 641 | return Err(err); |
| 642 | } |
| 643 | } else { unreachable!(); } |
| 644 | }, |
| 645 | JPEGType::Progressive => { |
| 646 | validate!(ss < 64 && se < 64 && se >= ss); |
| 647 | validate!(ah < 14 && al < 14); |
| 648 | return Err(DecoderError::NotImplemented); |
| 649 | }, |
| 650 | JPEGType::Lossless => { |
| 651 | validate!(ss >= 1 && ss < 8 && se == 0); |
| 652 | validate!(ah == 0); |
| 653 | return Err(DecoderError::NotImplemented); |
| 654 | }, |
| 655 | _ => return Err(DecoderError::NotImplemented), |
| 656 | }; |
| 657 | let tag = br.peek_u16be()?; |
| 658 | validate!((tag >= 0xFFD0 && tag <= 0xFFD7) || (tag == 0xFFD9)); |
| 659 | }, |
| 660 | 0xFFDB => { //quant tables |
| 661 | let mut len = br.read_u16be()? as usize; |
| 662 | validate!(len >= 64 + 3); |
| 663 | len -= 2; |
| 664 | while len > 0 { |
| 665 | let pt = br.read_byte()?; |
| 666 | let precision = pt >> 4; |
| 667 | validate!(precision < 2); |
| 668 | let id = (pt & 0xF) as usize; |
| 669 | validate!(id < 4); |
| 670 | let qsize = if precision == 0 { 64 } else { 64 * 2 } + 1; |
| 671 | validate!(len >= qsize); |
| 672 | if precision == 0 { |
| 673 | for el in self.quant[id].iter_mut() { |
| 674 | *el = i16::from(br.read_byte()?); |
| 675 | } |
| 676 | } else { |
| 677 | for el in self.quant[id].iter_mut() { |
| 678 | *el = br.read_u16be()? as i16; |
| 679 | } |
| 680 | } |
| 681 | len -= qsize; |
| 682 | } |
| 683 | }, |
| 684 | 0xFFDC => { //number of lines |
| 685 | return Err(DecoderError::NotImplemented); |
| 686 | }, |
| 687 | 0xFFDD => { |
| 688 | let len = br.read_u16be()?; |
| 689 | validate!(len == 4); |
| 690 | let ri = br.read_u16be()?; |
| 691 | if ri != 0 { |
| 692 | println!("restart interval {}", ri); |
| 693 | return Err(DecoderError::NotImplemented); |
| 694 | } |
| 695 | }, |
| 696 | 0xFFDE => return Err(DecoderError::NotImplemented), |
| 697 | 0xFFDF => return Err(DecoderError::NotImplemented), |
| 698 | 0xFFE0..=0xFFEF => { // application data |
| 699 | let len = br.read_u16be()? as usize; |
| 700 | validate!(len >= 2); |
| 701 | br.read_skip(len - 2)?; |
| 702 | }, |
| 703 | 0xFFF0..=0xFFF6 => return Err(DecoderError::NotImplemented), |
| 704 | 0xFFF7 => { |
| 705 | //jtype = JPEGType::JPEGLS; |
| 706 | //arith = false; |
| 707 | return Err(DecoderError::NotImplemented); |
| 708 | }, |
| 709 | 0xFFF8 => return Err(DecoderError::NotImplemented), //JPEG-LS parameters |
| 710 | 0xFFF9..=0xFFFD => return Err(DecoderError::NotImplemented), |
| 711 | 0xFFFE => { //comment |
| 712 | let len = br.read_u16be()? as usize; |
| 713 | validate!(len >= 2); |
| 714 | br.read_skip(len - 2)?; |
| 715 | }, |
| 716 | 0xFF01 => return Err(DecoderError::NotImplemented), |
| 717 | 0xFF02..=0xFFBF => return Err(DecoderError::NotImplemented), |
| 718 | _ => return Err(DecoderError::InvalidData), |
| 719 | }; |
| 720 | } |
| 721 | validate!(jtype != JPEGType::None); |
| 722 | |
| 723 | if let NABufferType::None = bufinfo { |
| 724 | return Err(DecoderError::InvalidData); |
| 725 | } |
| 726 | |
| 727 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo); |
| 728 | frm.set_keyframe(true); |
| 729 | frm.set_frame_type(FrameType::I); |
| 730 | Ok(frm.into_ref()) |
| 731 | } |
| 732 | fn flush(&mut self) { |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | impl NAOptionHandler for JPEGDecoder { |
| 737 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } |
| 738 | fn set_options(&mut self, _options: &[NAOption]) { } |
| 739 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } |
| 740 | } |
| 741 | |
| 742 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
| 743 | Box::new(JPEGDecoder::new()) |
| 744 | } |
| 745 | |
| 746 | #[cfg(test)] |
| 747 | mod test { |
| 748 | use nihav_core::codecs::RegisteredDecoders; |
| 749 | use nihav_core::demuxers::RegisteredDemuxers; |
| 750 | use nihav_codec_support::test::dec_video::*; |
| 751 | use crate::generic_register_all_decoders; |
| 752 | use crate::generic_register_all_demuxers; |
| 753 | #[test] |
| 754 | fn test_jpeg() { |
| 755 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 756 | generic_register_all_demuxers(&mut dmx_reg); |
| 757 | let mut dec_reg = RegisteredDecoders::new(); |
| 758 | generic_register_all_decoders(&mut dec_reg); |
| 759 | test_decoding("avi", "jpeg", "assets/Misc/mjpeg.avi", Some(1), &dmx_reg, |
| 760 | &dec_reg, ExpectedTestResult::MD5Frames(vec![ |
| 761 | [0xe07f7128, 0x8c55eb5d, 0x03bfdee5, 0x358b24a4], |
| 762 | [0xd3ec3f92, 0x1664c56d, 0xfc049754, 0xf65165b9]])); |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | const DC_LENS: [[u8; 16]; 2] = [ |
| 767 | [ 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 ], |
| 768 | [ 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 ] |
| 769 | ]; |
| 770 | const DC_SYMS: [u8; 12] = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 ]; |
| 771 | const AC_LENS: [[u8; 16]; 2] = [ |
| 772 | [ 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 125 ], |
| 773 | [ 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 119 ] |
| 774 | ]; |
| 775 | const AC_SYMS: [&[u8]; 2] = [ |
| 776 | &[ |
| 777 | 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, |
| 778 | 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, |
| 779 | 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, |
| 780 | 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, |
| 781 | 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, |
| 782 | 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, |
| 783 | 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, |
| 784 | 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, |
| 785 | 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, |
| 786 | 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, |
| 787 | 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, |
| 788 | 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, |
| 789 | 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, |
| 790 | 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
| 791 | 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, |
| 792 | 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, |
| 793 | 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, |
| 794 | 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, |
| 795 | 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, |
| 796 | 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, |
| 797 | 0xf9, 0xfa |
| 798 | ], |
| 799 | &[ |
| 800 | 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, |
| 801 | 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, |
| 802 | 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, |
| 803 | 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, |
| 804 | 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, |
| 805 | 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, |
| 806 | 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, |
| 807 | 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, |
| 808 | 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, |
| 809 | 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, |
| 810 | 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, |
| 811 | 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
| 812 | 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, |
| 813 | 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, |
| 814 | 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, |
| 815 | 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, |
| 816 | 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, |
| 817 | 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, |
| 818 | 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, |
| 819 | 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, |
| 820 | 0xf9, 0xfa |
| 821 | ] |
| 822 | ]; |