| 309 | }; |
| 310 | // writes a block |
| 311 | var wblk = function (dat, out, final, syms, lf, df, eb, li, bs, bl, p) { |
| 312 | wbits(out, p++, final); |
| 313 | ++lf[256]; |
| 314 | var _a = hTree(lf, 15), |
| 315 | dlt = _a.t, |
| 316 | mlb = _a.l; |
| 317 | var _b = hTree(df, 15), |
| 318 | ddt = _b.t, |
| 319 | mdb = _b.l; |
| 320 | var _c = lc(dlt), |
| 321 | lclt = _c.c, |
| 322 | nlc = _c.n; |
| 323 | var _d = lc(ddt), |
| 324 | lcdt = _d.c, |
| 325 | ndc = _d.n; |
| 326 | var lcfreq = new u16(19); |
| 327 | for (var i = 0; i < lclt.length; ++i) ++lcfreq[lclt[i] & 31]; |
| 328 | for (var i = 0; i < lcdt.length; ++i) ++lcfreq[lcdt[i] & 31]; |
| 329 | var _e = hTree(lcfreq, 7), |
| 330 | lct = _e.t, |
| 331 | mlcb = _e.l; |
| 332 | var nlcc = 19; |
| 333 | for (; nlcc > 4 && !lct[clim[nlcc - 1]]; --nlcc); |
| 334 | var flen = (bl + 5) << 3; |
| 335 | var ftlen = clen(lf, flt) + clen(df, fdt) + eb; |
| 336 | var dtlen = |
| 337 | clen(lf, dlt) + |
| 338 | clen(df, ddt) + |
| 339 | eb + |
| 340 | 14 + |
| 341 | 3 * nlcc + |
| 342 | clen(lcfreq, lct) + |
| 343 | 2 * lcfreq[16] + |
| 344 | 3 * lcfreq[17] + |
| 345 | 7 * lcfreq[18]; |
| 346 | if (bs >= 0 && flen <= ftlen && flen <= dtlen) return wfblk(out, p, dat.subarray(bs, bs + bl)); |
| 347 | var lm, ll, dm, dl; |
| 348 | (wbits(out, p, 1 + (dtlen < ftlen)), (p += 2)); |
| 349 | if (dtlen < ftlen) { |
| 350 | ((lm = hMap(dlt, mlb, 0)), (ll = dlt), (dm = hMap(ddt, mdb, 0)), (dl = ddt)); |
| 351 | var llm = hMap(lct, mlcb, 0); |
| 352 | wbits(out, p, nlc - 257); |
| 353 | wbits(out, p + 5, ndc - 1); |
| 354 | wbits(out, p + 10, nlcc - 4); |
| 355 | p += 14; |
| 356 | for (var i = 0; i < nlcc; ++i) wbits(out, p + 3 * i, lct[clim[i]]); |
| 357 | p += 3 * nlcc; |
| 358 | var lcts = [lclt, lcdt]; |
| 359 | for (var it = 0; it < 2; ++it) { |
| 360 | var clct = lcts[it]; |
| 361 | for (var i = 0; i < clct.length; ++i) { |
| 362 | var len = clct[i] & 31; |
| 363 | (wbits(out, p, llm[len]), (p += lct[len])); |
| 364 | if (len > 15) (wbits(out, p, (clct[i] >> 5) & 127), (p += clct[i] >> 12)); |
| 365 | } |
| 366 | } |
| 367 | } else { |
| 368 | ((lm = flm), (ll = flt), (dm = fdm), (dl = fdt)); |