File Manager

X7ROOT File Manager

Current Path: /opt/alt/tests/alt-php84-brotli_0.5.0-3.el8/brotli/c/enc

opt / alt / tests / alt-php84-brotli_0.5.0-3.el8 / brotli / c / enc /

ðŸ“ ..
ðŸ“ .libs
ðŸ“„ backward_references.c(3.92 KB)
ðŸ“„ backward_references.dep(2.92 KB)
ðŸ“„ backward_references.h(1.25 KB)
ðŸ“„ backward_references.lo(303 B)
ðŸ“„ backward_references_hq.c(29.94 KB)
ðŸ“„ backward_references_hq.dep(3.05 KB)
ðŸ“„ backward_references_hq.h(3.83 KB)
ðŸ“„ backward_references_hq.lo(309 B)
ðŸ“„ backward_references_inc.h(6.36 KB)
ðŸ“„ bit_cost.c(812 B)
ðŸ“„ bit_cost.dep(2.21 KB)
ðŸ“„ bit_cost.h(1.67 KB)
ðŸ“„ bit_cost.lo(281 B)
ðŸ“„ bit_cost_inc.h(4.01 KB)
ðŸ“„ block_encoder_inc.h(1.08 KB)
ðŸ“„ block_splitter.c(6.01 KB)
ðŸ“„ block_splitter.dep(2.31 KB)
ðŸ“„ block_splitter.h(1.63 KB)
ðŸ“„ block_splitter.lo(293 B)
ðŸ“„ block_splitter_inc.h(15.86 KB)
ðŸ“„ brotli_bit_stream.c(48.7 KB)
ðŸ“„ brotli_bit_stream.dep(3.11 KB)
ðŸ“„ brotli_bit_stream.h(4.59 KB)
ðŸ“„ brotli_bit_stream.lo(299 B)
ðŸ“„ cluster.c(1.45 KB)
ðŸ“„ cluster.dep(2.41 KB)
ðŸ“„ cluster.h(1021 B)
ðŸ“„ cluster.lo(279 B)
ðŸ“„ cluster_inc.h(11.14 KB)
ðŸ“„ command.h(6.48 KB)
ðŸ“„ compress_fragment.c(31.53 KB)
ðŸ“„ compress_fragment.dep(2.89 KB)
ðŸ“„ compress_fragment.h(2.75 KB)
ðŸ“„ compress_fragment.lo(299 B)
ðŸ“„ compress_fragment_two_pass.c(23.24 KB)
ðŸ“„ compress_fragment_two_pass.dep(3.07 KB)
ðŸ“„ compress_fragment_two_pass.h(2.34 KB)
ðŸ“„ compress_fragment_two_pass.lo(317 B)
ðŸ“„ context.h(7.27 KB)
ðŸ“„ dictionary_hash.c(86.83 KB)
ðŸ“„ dictionary_hash.dep(344 B)
ðŸ“„ dictionary_hash.h(583 B)
ðŸ“„ dictionary_hash.lo(295 B)
ðŸ“„ encode.c(65.51 KB)
ðŸ“„ encode.dep(4.74 KB)
ðŸ“„ encode.lo(277 B)
ðŸ“„ entropy_encode.c(14.14 KB)
ðŸ“„ entropy_encode.dep(560 B)
ðŸ“„ entropy_encode.h(3.94 KB)
ðŸ“„ entropy_encode.lo(293 B)
ðŸ“„ entropy_encode_static.h(32.12 KB)
ðŸ“„ fast_log.h(6.96 KB)
ðŸ“„ find_match_length.h(2.47 KB)
ðŸ“„ hash.h(13.56 KB)
ðŸ“„ hash_forgetful_chain_inc.h(9.41 KB)
ðŸ“„ hash_longest_match64_inc.h(10.19 KB)
ðŸ“„ hash_longest_match_inc.h(9.75 KB)
ðŸ“„ hash_longest_match_quickly_inc.h(8.5 KB)
ðŸ“„ hash_to_binary_tree_inc.h(12.58 KB)
ðŸ“„ histogram.c(3.05 KB)
ðŸ“„ histogram.dep(1.82 KB)
ðŸ“„ histogram.h(1.68 KB)
ðŸ“„ histogram.lo(283 B)
ðŸ“„ histogram_inc.h(1.37 KB)
ðŸ“„ literal_cost.c(5.47 KB)
ðŸ“„ literal_cost.dep(618 B)
ðŸ“„ literal_cost.h(880 B)
ðŸ“„ literal_cost.lo(289 B)
ðŸ“„ memory.c(4.96 KB)
ðŸ“„ memory.dep(455 B)
ðŸ“„ memory.h(1.66 KB)
ðŸ“„ memory.lo(277 B)
ðŸ“„ metablock.c(20.3 KB)
ðŸ“„ metablock.dep(2.92 KB)
ðŸ“„ metablock.h(3.67 KB)
ðŸ“„ metablock.lo(283 B)
ðŸ“„ metablock_inc.h(7.34 KB)
ðŸ“„ port.h(5.5 KB)
ðŸ“„ prefix.h(1.93 KB)
ðŸ“„ quality.h(5.62 KB)
ðŸ“„ ringbuffer.h(5.57 KB)
ðŸ“„ static_dict.c(18.14 KB)
ðŸ“„ static_dict.dep(796 B)
ðŸ“„ static_dict.h(1.2 KB)
ðŸ“„ static_dict.lo(287 B)
ðŸ“„ static_dict_lut.h(458.65 KB)
ðŸ“„ utf8_util.c(2.21 KB)
ðŸ“„ utf8_util.dep(396 B)
ðŸ“„ utf8_util.h(892 B)
ðŸ“„ utf8_util.lo(283 B)
ðŸ“„ write_bits.h(2.72 KB)

Editing: bit_cost_inc.h

/* NOLINT(build/header_guard) */
/* Copyright 2013 Google Inc. All Rights Reserved.

Distributed under MIT license.
   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/

/* template parameters: FN */

#define HistogramType FN(Histogram)

double FN(BrotliPopulationCost)(const HistogramType* histogram) {
  static const double kOneSymbolHistogramCost = 12;
  static const double kTwoSymbolHistogramCost = 20;
  static const double kThreeSymbolHistogramCost = 28;
  static const double kFourSymbolHistogramCost = 37;
  const size_t data_size = FN(HistogramDataSize)();
  int count = 0;
  size_t s[5];
  double bits = 0.0;
  size_t i;
  if (histogram->total_count_ == 0) {
    return kOneSymbolHistogramCost;
  }
  for (i = 0; i < data_size; ++i) {
    if (histogram->data_[i] > 0) {
      s[count] = i;
      ++count;
      if (count > 4) break;
    }
  }
  if (count == 1) {
    return kOneSymbolHistogramCost;
  }
  if (count == 2) {
    return (kTwoSymbolHistogramCost + (double)histogram->total_count_);
  }
  if (count == 3) {
    const uint32_t histo0 = histogram->data_[s[0]];
    const uint32_t histo1 = histogram->data_[s[1]];
    const uint32_t histo2 = histogram->data_[s[2]];
    const uint32_t histomax =
        BROTLI_MAX(uint32_t, histo0, BROTLI_MAX(uint32_t, histo1, histo2));
    return (kThreeSymbolHistogramCost +
            2 * (histo0 + histo1 + histo2) - histomax);
  }
  if (count == 4) {
    uint32_t histo[4];
    uint32_t h23;
    uint32_t histomax;
    for (i = 0; i < 4; ++i) {
      histo[i] = histogram->data_[s[i]];
    }
    /* Sort */
    for (i = 0; i < 4; ++i) {
      size_t j;
      for (j = i + 1; j < 4; ++j) {
        if (histo[j] > histo[i]) {
          BROTLI_SWAP(uint32_t, histo, j, i);
        }
      }
    }
    h23 = histo[2] + histo[3];
    histomax = BROTLI_MAX(uint32_t, h23, histo[0]);
    return (kFourSymbolHistogramCost +
            3 * h23 + 2 * (histo[0] + histo[1]) - histomax);
  }

{
    /* In this loop we compute the entropy of the histogram and simultaneously
       build a simplified histogram of the code length codes where we use the
       zero repeat code 17, but we don't use the non-zero repeat code 16. */
    size_t max_depth = 1;
    uint32_t depth_histo[BROTLI_CODE_LENGTH_CODES] = { 0 };
    const double log2total = FastLog2(histogram->total_count_);
    for (i = 0; i < data_size;) {
      if (histogram->data_[i] > 0) {
        /* Compute -log2(P(symbol)) = -log2(count(symbol)/total_count) =
                                    = log2(total_count) - log2(count(symbol)) */
        double log2p = log2total - FastLog2(histogram->data_[i]);
        /* Approximate the bit depth by round(-log2(P(symbol))) */
        size_t depth = (size_t)(log2p + 0.5);
        bits += histogram->data_[i] * log2p;
        if (depth > 15) {
          depth = 15;
        }
        if (depth > max_depth) {
          max_depth = depth;
        }
        ++depth_histo[depth];
        ++i;
      } else {
        /* Compute the run length of zeros and add the appropriate number of 0
           and 17 code length codes to the code length code histogram. */
        uint32_t reps = 1;
        size_t k;
        for (k = i + 1; k < data_size && histogram->data_[k] == 0; ++k) {
          ++reps;
        }
        i += reps;
        if (i == data_size) {
          /* Don't add any cost for the last zero run, since these are encoded
             only implicitly. */
          break;
        }
        if (reps < 3) {
          depth_histo[0] += reps;
        } else {
          reps -= 2;
          while (reps > 0) {
            ++depth_histo[BROTLI_REPEAT_ZERO_CODE_LENGTH];
            /* Add the 3 extra bits for the 17 code length code. */
            bits += 3;
            reps >>= 3;
          }
        }
      }
    }
    /* Add the estimated encoding cost of the code length code histogram. */
    bits += (double)(18 + 2 * max_depth);
    /* Add the entropy of the code length code histogram. */
    bits += BitsEntropy(depth_histo, BROTLI_CODE_LENGTH_CODES);
  }
  return bits;
}

#undef HistogramType

X7ROOT File Manager

Editing: bit_cost_inc.h

Upload File

Create Folder