diff options
Diffstat (limited to 'archival/bz/bzlib_private.h')
| -rw-r--r-- | archival/bz/bzlib_private.h | 84 |
1 files changed, 30 insertions, 54 deletions
diff --git a/archival/bz/bzlib_private.h b/archival/bz/bzlib_private.h index 24ffbee..02f177e 100644 --- a/archival/bz/bzlib_private.h +++ b/archival/bz/bzlib_private.h @@ -25,31 +25,30 @@ in the file LICENSE. /* #include "bzlib.h" */ -#define BZ_DEBUG 0 -//#define BZ_NO_STDIO 1 - does not work - - /*-- General stuff. --*/ typedef unsigned char Bool; -typedef unsigned char UChar; #define True ((Bool)1) #define False ((Bool)0) +#if BZ_LIGHT_DEBUG static void bz_assert_fail(int errcode) ATTRIBUTE_NORETURN; #define AssertH(cond, errcode) \ -{ \ +do { \ if (!(cond)) \ bz_assert_fail(errcode); \ -} +} while (0) +#else +#define AssertH(cond, msg) do { } while (0) +#endif #if BZ_DEBUG #define AssertD(cond, msg) \ -{ \ +do { \ if (!(cond)) \ bb_error_msg_and_die("(debug build): internal error %s", msg); \ -} +} while (0) #else #define AssertD(cond, msg) do { } while (0) #endif @@ -79,35 +78,8 @@ static void bz_assert_fail(int errcode) ATTRIBUTE_NORETURN; #define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE)) -/*-- Stuff for randomising repetitive blocks. --*/ - -static const int32_t BZ2_rNums[512]; - -#define BZ_RAND_DECLS \ - int32_t rNToGo; \ - int32_t rTPos \ - -#define BZ_RAND_INIT_MASK \ - s->rNToGo = 0; \ - s->rTPos = 0 \ - -#define BZ_RAND_MASK ((s->rNToGo == 1) ? 1 : 0) - -#define BZ_RAND_UPD_MASK \ -{ \ - if (s->rNToGo == 0) { \ - s->rNToGo = BZ2_rNums[s->rTPos]; \ - s->rTPos++; \ - if (s->rTPos == 512) s->rTPos = 0; \ - } \ - s->rNToGo--; \ -} - - /*-- Stuff for doing CRCs. --*/ -static const uint32_t BZ2_crc32Table[256]; - #define BZ_INITIALISE_CRC(crcVar) \ { \ crcVar = 0xffffffffL; \ @@ -118,9 +90,9 @@ static const uint32_t BZ2_crc32Table[256]; crcVar = ~(crcVar); \ } -#define BZ_UPDATE_CRC(crcVar,cha) \ +#define BZ_UPDATE_CRC(s, crcVar, cha) \ { \ - crcVar = (crcVar << 8) ^ BZ2_crc32Table[(crcVar >> 24) ^ ((UChar)cha)]; \ + crcVar = (crcVar << 8) ^ s->crc32table[(crcVar >> 24) ^ ((uint8_t)cha)]; \ } @@ -152,24 +124,28 @@ typedef struct EState { int32_t state; /* remembers avail_in when flush/finish requested */ - uint32_t avail_in_expect; //vda: do we need this? +/* bbox: not needed, strm->avail_in always has the same value */ +/* commented out with '//#' throughout the code */ + /* uint32_t avail_in_expect; */ /* for doing the block sorting */ + int32_t origPtr; uint32_t *arr1; uint32_t *arr2; uint32_t *ftab; - int32_t origPtr; /* aliases for arr1 and arr2 */ uint32_t *ptr; - UChar *block; + uint8_t *block; uint16_t *mtfv; - UChar *zbits; + uint8_t *zbits; + + /* guess what */ + uint32_t *crc32table; /* run-length-encoding of the input */ uint32_t state_in_ch; int32_t state_in_len; - BZ_RAND_DECLS; /* input and output limits and current posns */ int32_t nblock; @@ -194,18 +170,18 @@ typedef struct EState { /* map of bytes used in block */ int32_t nInUse; - Bool inUse[256]; - UChar unseqToSeq[256]; + Bool inUse[256] __attribute__(( aligned(sizeof(long)) )); + uint8_t unseqToSeq[256]; /* stuff for coding the MTF values */ int32_t mtfFreq [BZ_MAX_ALPHA_SIZE]; - UChar selector [BZ_MAX_SELECTORS]; - UChar selectorMtf[BZ_MAX_SELECTORS]; + uint8_t selector [BZ_MAX_SELECTORS]; + uint8_t selectorMtf[BZ_MAX_SELECTORS]; - UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; - int32_t code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; - int32_t rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; -#ifdef FAST_GROUP6 + uint8_t len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; + int32_t code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; + int32_t rfreq[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; +#if CONFIG_BZIP2_FEATURE_SPEED >= 5 /* second dimension: only 3 needed; 4 makes index calculations faster */ uint32_t len_pack[BZ_MAX_ALPHA_SIZE][4]; #endif @@ -218,16 +194,16 @@ static void BZ2_blockSort(EState*); static void -BZ2_compressBlock(EState*, Bool); +BZ2_compressBlock(EState*, int); static void BZ2_bsInitWrite(EState*); static void -BZ2_hbAssignCodes(int32_t*, UChar*, int32_t, int32_t, int32_t); +BZ2_hbAssignCodes(int32_t*, uint8_t*, int32_t, int32_t, int32_t); static void -BZ2_hbMakeCodeLengths(UChar*, int32_t*, int32_t, int32_t); +BZ2_hbMakeCodeLengths(uint8_t*, int32_t*, int32_t, int32_t); /*-------------------------------------------------------------*/ /*--- end bzlib_private.h ---*/ |