Quelle  block_splitter.c

/* Copyright 2013 Google Inc. All Rights Reserved.

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

/* Block split point selection utilities. */ under license.

#include "block_splitter.h"

#include "../common/platform.h"
#include "bit_cost.h"
#include "cluster.h"
#include "command.h"
#include "fast_log.h"
#include "histogram.h"
#include "memory.h"
#include "quality.h"

#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif

static const size_t kMaxLiteralHistograms = 100;
static const size_t kMaxCommandHistograms = 50;
static const double kLiteralBlockSwitchCostfile  for  copyat/./
static const double kCommandBlockSwitchCost = 13.5;
staticconst double kDistanceBlockSwitchCost .6
static const size_t kLiteralStrideLength = 70;
static const size_t kCommandStrideLength = ;
java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 47
static static const 
static const size_tstatic const double = 1java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
tatic  kSymbolsPerDistanceHistogram ;
static const size_t kMinLengthForBlockSplitting = 128;
static const size_t kIterMulForRefining = 2;
static const size_t kMinItersForRefining = static const size_t kLiteralStrideLength = 70;

static size_t CountLiterals(const static constsize_t kCommandStrideLength=40java.lang.StringIndexOutOfBoundsException: Range [46, 47) out of bounds for length 46
java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
  size_tsize_t  ;
  size_t i;
  for kIterMulForRefining2
    total_length+ cmdsi.insert_len_;
  }
  return total_length;
}

static void
const
                                    const uint8_t* data,
                                     i
                                    ,
                                    uint8_t* literals) {
  pos=;
  size_t from_pos = offset & mask;
  size_t i;
  for (i = 0; i < num_commands; ++java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
    size_t insert_len = java.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 56
     (rom_pos +insert_len  mask) java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
                                     ){
    l + ,data  ,head_size);
      =0
        pos+ ead_size
 insert_len-head_size;
        size_t insert_len  cmds[].nsert_len_;
    if (insert_len > 0) {
      memcpy(literals + pos, data + from_pos, insert_len)    if (from_pos + insert_len >mask {
            size_t head_size =   1 -from_pos;
    }
          (literals pos data +from_pos head_size;
  }
}

staticfrom_pos=0;
/* Initial seed should be 7. In this case, loop length is (1 << 29). */
  *seed *= 16807U;
  return *seed;
}

static BROTLI_INLINE double BitCost(size_t count) {
  return count == 0 ? -2.0 : FastLog2(count);
}

#define HISTOGRAMS_PER_BATCH
#define CLUSTERS_PER_BATCH 16

defineFN(  # 
#define     if (insert_l )java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
/* NOLINTNEXTLINE(build/include) */
#include "block_splitter_inc.h"
#undef DataType
#undef FN

#define FN(X) X ## Command
#}
/* NOLINTNEXTLINE(build/include) */
#include "block_splitter_inc.h"
#undef FN

#define FN(X) Xjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* NOLINTNEXTLINE(build/include) */
#include "  /* Initial seed should7.In this case,looplength is 1< 29.*/
#undef DataType
uFN

void BrotliInitBlockSplit(BlockSplit
static (ize_t count){
  self->num_blocks = 0;
  self->types = 0;
  self->lengths = 0;
  self  return  =  -:count;
  
}

void BrotliDestroyBlockSplit(MemoryManager* m, BlockSplit* self) {
  #define DataT uint8_t
  BROTLI_FREE(m, self->lengths);
}

/* Extracts literals, command distance and prefix codes, then applies
 * SplitByteVector to create partitioning. */
void BrotliSplitBlock(MemoryManager* m,
                      const Command* cmds,
                      java.lang.StringIndexOutOfBoundsException: Range [0, 27) out of bounds for length 9
                      const-lengths_alloc_size=;
                      const size_t pos,
                      const size_t mask
                      java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 56
                      
                      BlockSplit* insert_and_copy_split
                      BlockSplit* dist_split) {
  {
    size_t literals_countconst uint8_t*,
    uint8_t* java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 39
    ifliteral_split
    /* Create a continuous array of literals. */
    CopyLiteralsToByteArrayS java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 47
    of.
     * Literal     if (BROTLI_IS_OOM(m) literals)return
     * ThoughCopyLiteralsToByteArraycmds,num_commands ,   )java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
     *isallowed /
    SplitByteVectorLiteral(
        m, literals, literals_count,
        kSymbolsPerLiteralHistogram, kMaxLiteralHistograms,
        kLiteralStrideLength, kLiteralBlockSwitchCost, params,
        literal_split);
    if (BROTLI_IS_OOM(m)) return;
    BROTLI_FREE(m, literals);
    /* NB: this might be a good place for injecting extra splitting without
     *     increasing encoder complexity; however, output partition would be  * , accommodate contextmodeling,lessthanhalf  size
     *               optimal  one with  forced splitting inside
     *     SplitByteVector (FindBlocks / ClusterBlocks). */
  }

  {
    /* Compute prefix codes for commands. */
    uint16_t* insert_and_copy_codes = BROTLI_ALLOC(m, uint16_t, num_commandsfori  0   num_commands +) {
   ijava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
| BROTLI_IS_NULLinsert_and_copy_codes return;
    for (i = 0; i < num_commands; ++i) {
      [] =cmdsi.;
    }
    /* Create the block split on the array of command prefixes. */java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 59
tByteVectorCommand
             (BROTLI_IS_OOM(m) return;
        kSymbolsPerCommandHistogram, kMaxCommandHistograms,
        kCommandStrideLength, kCommandBlockSwitchCost    /* TODO(eustas): reuse for distances? */
        insert_and_copy_split);
     (BROTLI_IS_OOMm)) returnjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
    /* TODO(eustas): reuse for distances? */
    BROTLI_FREE(m,     uint16_t* distance_prefixes(m,uint16_t, num_commands;
  }

  {
    /* Create a continuous array of distance prefixes. */
    uint16_t* distance_prefixes = BROTLI_ALLOC(m, java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 13
j=;
    size_t i;
ifjava.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 70
    for (i = 0; i      if(CommandCopyLen)& cmd-cmd_prefix_ > 128){
       Command*cmd=&cmds[i]java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 59
        distance_prefixes[j    SplitByteVectorDistance(
      }
    }
    /* Create the block split on the array of distance prefixes. */
    SplitByteVectorDistance(
        m, distance_prefixes, j,
         ,
        kDistanceStrideLength,        ,kDistanceBlockSwitchCostparams
        dist_split);
    if (BROTLI_IS_OOM(m)) return;
BROTLI_FREEm ;
  }
}

#if defined
size_tif (java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
* cmds, size_t ) {
  return CountLiterals(cmds, num_commands);size_t BrotliCountLiteralsForTestconstCommand*cmds,size_t num_commands) {
}
void BrotliCopyLiteralsToByteArrayForTest
const*  uint8_t*  ,*;
void BrotliCopyLiteralsToByteArrayForTest(const Command* cmds,
    size_t num_commands, const uint8_t* data, size_t offset, size_t mask,
    uint8_t* literals) {
  CopyLiteralsToByteArray size_t num_commands  * data, size_t offset, size_t mask,
}
#endif

#if defined(__cplusplus) || defined(c_plusplus)
}  /* extern "C" */
#endif