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Diffstat (limited to 'src/3rdparty/libtiff/libtiff/tif_lzw.c')
-rw-r--r--src/3rdparty/libtiff/libtiff/tif_lzw.c359
1 files changed, 202 insertions, 157 deletions
diff --git a/src/3rdparty/libtiff/libtiff/tif_lzw.c b/src/3rdparty/libtiff/libtiff/tif_lzw.c
index bc4dac6..fd9c7a0 100644
--- a/src/3rdparty/libtiff/libtiff/tif_lzw.c
+++ b/src/3rdparty/libtiff/libtiff/tif_lzw.c
@@ -1,4 +1,4 @@
-/* $Id: tif_lzw.c,v 1.29.2.5 2009-06-22 04:57:31 fwarmerdam Exp $ */
+/* $Id: tif_lzw.c,v 1.45 2011-04-02 20:54:09 bfriesen Exp $ */
/*
* Copyright (c) 1988-1997 Sam Leffler
@@ -27,7 +27,7 @@
#include "tiffiop.h"
#ifdef LZW_SUPPORT
/*
- * TIFF Library.
+ * TIFF Library.
* Rev 5.0 Lempel-Ziv & Welch Compression Support
*
* This code is derived from the compress program whose code is
@@ -53,34 +53,34 @@
*
* Future revisions to the TIFF spec are expected to "clarify this issue".
*/
-#define LZW_COMPAT /* include backwards compatibility code */
+#define LZW_COMPAT /* include backwards compatibility code */
/*
* Each strip of data is supposed to be terminated by a CODE_EOI.
* If the following #define is included, the decoder will also
* check for end-of-strip w/o seeing this code. This makes the
* library more robust, but also slower.
*/
-#define LZW_CHECKEOS /* include checks for strips w/o EOI code */
+#define LZW_CHECKEOS /* include checks for strips w/o EOI code */
#define MAXCODE(n) ((1L<<(n))-1)
/*
* The TIFF spec specifies that encoded bit
* strings range from 9 to 12 bits.
*/
-#define BITS_MIN 9 /* start with 9 bits */
-#define BITS_MAX 12 /* max of 12 bit strings */
+#define BITS_MIN 9 /* start with 9 bits */
+#define BITS_MAX 12 /* max of 12 bit strings */
/* predefined codes */
-#define CODE_CLEAR 256 /* code to clear string table */
-#define CODE_EOI 257 /* end-of-information code */
-#define CODE_FIRST 258 /* first free code entry */
-#define CODE_MAX MAXCODE(BITS_MAX)
-#define HSIZE 9001L /* 91% occupancy */
-#define HSHIFT (13-8)
+#define CODE_CLEAR 256 /* code to clear string table */
+#define CODE_EOI 257 /* end-of-information code */
+#define CODE_FIRST 258 /* first free code entry */
+#define CODE_MAX MAXCODE(BITS_MAX)
+#define HSIZE 9001L /* 91% occupancy */
+#define HSHIFT (13-8)
#ifdef LZW_COMPAT
/* NB: +1024 is for compatibility with old files */
-#define CSIZE (MAXCODE(BITS_MAX)+1024L)
+#define CSIZE (MAXCODE(BITS_MAX)+1024L)
#else
-#define CSIZE (MAXCODE(BITS_MAX)+1L)
+#define CSIZE (MAXCODE(BITS_MAX)+1L)
#endif
/*
@@ -88,23 +88,23 @@
* compression/decompression. Note that the predictor
* state block must be first in this data structure.
*/
-typedef struct {
- TIFFPredictorState predict; /* predictor super class */
+typedef struct {
+ TIFFPredictorState predict; /* predictor super class */
- unsigned short nbits; /* # of bits/code */
- unsigned short maxcode; /* maximum code for lzw_nbits */
- unsigned short free_ent; /* next free entry in hash table */
- long nextdata; /* next bits of i/o */
- long nextbits; /* # of valid bits in lzw_nextdata */
+ unsigned short nbits; /* # of bits/code */
+ unsigned short maxcode; /* maximum code for lzw_nbits */
+ unsigned short free_ent; /* next free entry in hash table */
+ long nextdata; /* next bits of i/o */
+ long nextbits; /* # of valid bits in lzw_nextdata */
- int rw_mode; /* preserve rw_mode from init */
+ int rw_mode; /* preserve rw_mode from init */
} LZWBaseState;
-#define lzw_nbits base.nbits
-#define lzw_maxcode base.maxcode
-#define lzw_free_ent base.free_ent
-#define lzw_nextdata base.nextdata
-#define lzw_nextbits base.nextbits
+#define lzw_nbits base.nbits
+#define lzw_maxcode base.maxcode
+#define lzw_free_ent base.free_ent
+#define lzw_nextdata base.nextdata
+#define lzw_nextbits base.nextbits
/*
* Encoding-specific state.
@@ -125,44 +125,44 @@ typedef struct code_ent {
unsigned char firstchar; /* first token of string */
} code_t;
-typedef int (*decodeFunc)(TIFF*, tidata_t, tsize_t, tsample_t);
+typedef int (*decodeFunc)(TIFF*, uint8*, tmsize_t, uint16);
typedef struct {
LZWBaseState base;
/* Decoding specific data */
- long dec_nbitsmask; /* lzw_nbits 1 bits, right adjusted */
- long dec_restart; /* restart count */
+ long dec_nbitsmask; /* lzw_nbits 1 bits, right adjusted */
+ long dec_restart; /* restart count */
#ifdef LZW_CHECKEOS
- long dec_bitsleft; /* available bits in raw data */
+ uint64 dec_bitsleft; /* available bits in raw data */
#endif
decodeFunc dec_decode; /* regular or backwards compatible */
- code_t* dec_codep; /* current recognized code */
- code_t* dec_oldcodep; /* previously recognized code */
- code_t* dec_free_entp; /* next free entry */
- code_t* dec_maxcodep; /* max available entry */
- code_t* dec_codetab; /* kept separate for small machines */
+ code_t* dec_codep; /* current recognized code */
+ code_t* dec_oldcodep; /* previously recognized code */
+ code_t* dec_free_entp; /* next free entry */
+ code_t* dec_maxcodep; /* max available entry */
+ code_t* dec_codetab; /* kept separate for small machines */
/* Encoding specific data */
- int enc_oldcode; /* last code encountered */
- long enc_checkpoint; /* point at which to clear table */
+ int enc_oldcode; /* last code encountered */
+ long enc_checkpoint; /* point at which to clear table */
#define CHECK_GAP 10000 /* enc_ratio check interval */
- long enc_ratio; /* current compression ratio */
- long enc_incount; /* (input) data bytes encoded */
- long enc_outcount; /* encoded (output) bytes */
- tidata_t enc_rawlimit; /* bound on tif_rawdata buffer */
- hash_t* enc_hashtab; /* kept separate for small machines */
+ long enc_ratio; /* current compression ratio */
+ long enc_incount; /* (input) data bytes encoded */
+ long enc_outcount; /* encoded (output) bytes */
+ uint8* enc_rawlimit; /* bound on tif_rawdata buffer */
+ hash_t* enc_hashtab; /* kept separate for small machines */
} LZWCodecState;
-#define LZWState(tif) ((LZWBaseState*) (tif)->tif_data)
-#define DecoderState(tif) ((LZWCodecState*) LZWState(tif))
-#define EncoderState(tif) ((LZWCodecState*) LZWState(tif))
+#define LZWState(tif) ((LZWBaseState*) (tif)->tif_data)
+#define DecoderState(tif) ((LZWCodecState*) LZWState(tif))
+#define EncoderState(tif) ((LZWCodecState*) LZWState(tif))
-static int LZWDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+static int LZWDecode(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
#ifdef LZW_COMPAT
-static int LZWDecodeCompat(TIFF*, tidata_t, tsize_t, tsample_t);
+static int LZWDecodeCompat(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
#endif
-static void cl_hash(LZWCodecState*);
+static void cl_hash(LZWCodecState*);
/*
* LZW Decoder.
@@ -174,8 +174,8 @@ static void cl_hash(LZWCodecState*);
* strip is suppose to be terminated with CODE_EOI.
*/
#define NextCode(_tif, _sp, _bp, _code, _get) { \
- if ((_sp)->dec_bitsleft < nbits) { \
- TIFFWarningExt(_tif->tif_clientdata, _tif->tif_name, \
+ if ((_sp)->dec_bitsleft < (uint64)nbits) { \
+ TIFFWarningExt(_tif->tif_clientdata, module, \
"LZWDecode: Strip %d not terminated with EOI code", \
_tif->tif_curstrip); \
_code = CODE_EOI; \
@@ -189,36 +189,43 @@ static void cl_hash(LZWCodecState*);
#endif
static int
+LZWFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
+
+static int
LZWSetupDecode(TIFF* tif)
{
+ static const char module[] = "LZWSetupDecode";
LZWCodecState* sp = DecoderState(tif);
- static const char module[] = " LZWSetupDecode";
int code;
- if( sp == NULL )
- {
- /*
- * Allocate state block so tag methods have storage to record
- * values.
- */
- tif->tif_data = (tidata_t) _TIFFmalloc(sizeof(LZWCodecState));
- if (tif->tif_data == NULL)
- {
- TIFFErrorExt(tif->tif_clientdata, "LZWPreDecode", "No space for LZW state block");
- return (0);
- }
-
- DecoderState(tif)->dec_codetab = NULL;
- DecoderState(tif)->dec_decode = NULL;
-
- /*
- * Setup predictor setup.
- */
- (void) TIFFPredictorInit(tif);
-
- sp = DecoderState(tif);
- }
-
+ if( sp == NULL )
+ {
+ /*
+ * Allocate state block so tag methods have storage to record
+ * values.
+ */
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof(LZWCodecState));
+ if (tif->tif_data == NULL)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "No space for LZW state block");
+ return (0);
+ }
+
+ DecoderState(tif)->dec_codetab = NULL;
+ DecoderState(tif)->dec_decode = NULL;
+
+ /*
+ * Setup predictor setup.
+ */
+ (void) TIFFPredictorInit(tif);
+
+ sp = DecoderState(tif);
+ }
+
assert(sp != NULL);
if (sp->dec_codetab == NULL) {
@@ -231,13 +238,13 @@ LZWSetupDecode(TIFF* tif)
/*
* Pre-load the table.
*/
- code = 255;
- do {
- sp->dec_codetab[code].value = code;
- sp->dec_codetab[code].firstchar = code;
- sp->dec_codetab[code].length = 1;
- sp->dec_codetab[code].next = NULL;
- } while (code--);
+ code = 255;
+ do {
+ sp->dec_codetab[code].value = code;
+ sp->dec_codetab[code].firstchar = code;
+ sp->dec_codetab[code].length = 1;
+ sp->dec_codetab[code].next = NULL;
+ } while (code--);
/*
* Zero-out the unused entries
*/
@@ -251,13 +258,14 @@ LZWSetupDecode(TIFF* tif)
* Setup state for decoding a strip.
*/
static int
-LZWPreDecode(TIFF* tif, tsample_t s)
+LZWPreDecode(TIFF* tif, uint16 s)
{
+ static const char module[] = "LZWPreDecode";
LZWCodecState *sp = DecoderState(tif);
(void) s;
assert(sp != NULL);
- if( sp->dec_codetab == NULL )
+ if( sp->dec_codetab == NULL )
{
tif->tif_setupdecode( tif );
}
@@ -268,7 +276,7 @@ LZWPreDecode(TIFF* tif, tsample_t s)
if (tif->tif_rawdata[0] == 0 && (tif->tif_rawdata[1] & 0x1)) {
#ifdef LZW_COMPAT
if (!sp->dec_decode) {
- TIFFWarningExt(tif->tif_clientdata, tif->tif_name,
+ TIFFWarningExt(tif->tif_clientdata, module,
"Old-style LZW codes, convert file");
/*
* Override default decoding methods with
@@ -291,7 +299,7 @@ LZWPreDecode(TIFF* tif, tsample_t s)
sp->lzw_maxcode = MAXCODE(BITS_MIN);
#else /* !LZW_COMPAT */
if (!sp->dec_decode) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+ TIFFErrorExt(tif->tif_clientdata, module,
"Old-style LZW codes not supported");
sp->dec_decode = LZWDecode;
}
@@ -308,7 +316,7 @@ LZWPreDecode(TIFF* tif, tsample_t s)
sp->dec_restart = 0;
sp->dec_nbitsmask = MAXCODE(BITS_MIN);
#ifdef LZW_CHECKEOS
- sp->dec_bitsleft = tif->tif_rawcc << 3;
+ sp->dec_bitsleft = ((uint64)tif->tif_rawcc) << 3;
#endif
sp->dec_free_entp = sp->dec_codetab + CODE_FIRST;
/*
@@ -339,16 +347,17 @@ LZWPreDecode(TIFF* tif, tsample_t s)
}
static void
-codeLoop(TIFF* tif)
+codeLoop(TIFF* tif, const char* module)
{
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecode: Bogus encoding, loop in the code table; scanline %d",
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Bogus encoding, loop in the code table; scanline %d",
tif->tif_row);
}
static int
-LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
+LZWDecode(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
{
+ static const char module[] = "LZWDecode";
LZWCodecState *sp = DecoderState(tif);
char *op = (char*) op0;
long occ = (long) occ0;
@@ -362,6 +371,12 @@ LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
(void) s;
assert(sp != NULL);
assert(sp->dec_codetab != NULL);
+
+ /*
+ Fail if value does not fit in long.
+ */
+ if ((tmsize_t) occ != occ0)
+ return (0);
/*
* Restart interrupted output operation.
*/
@@ -428,7 +443,7 @@ LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
NextCode(tif, sp, bp, code, GetNextCode);
if (code == CODE_EOI)
break;
- if (code == CODE_CLEAR) {
+ if (code >= CODE_CLEAR) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"LZWDecode: Corrupted LZW table at scanline %d",
tif->tif_row);
@@ -441,22 +456,22 @@ LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
codep = sp->dec_codetab + code;
/*
- * Add the new entry to the code table.
- */
+ * Add the new entry to the code table.
+ */
if (free_entp < &sp->dec_codetab[0] ||
- free_entp >= &sp->dec_codetab[CSIZE]) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecode: Corrupted LZW table at scanline %d",
- tif->tif_row);
+ free_entp >= &sp->dec_codetab[CSIZE]) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Corrupted LZW table at scanline %d",
+ tif->tif_row);
return (0);
}
free_entp->next = oldcodep;
if (free_entp->next < &sp->dec_codetab[0] ||
- free_entp->next >= &sp->dec_codetab[CSIZE]) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecode: Corrupted LZW table at scanline %d",
- tif->tif_row);
+ free_entp->next >= &sp->dec_codetab[CSIZE]) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Corrupted LZW table at scanline %d",
+ tif->tif_row);
return (0);
}
free_entp->firstchar = free_entp->next->firstchar;
@@ -472,15 +487,15 @@ LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
oldcodep = codep;
if (code >= 256) {
/*
- * Code maps to a string, copy string
+ * Code maps to a string, copy string
* value to output (written in reverse).
- */
+ */
if(codep->length == 0) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecode: Wrong length of decoded string: "
- "data probably corrupted at scanline %d",
- tif->tif_row);
- return (0);
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Wrong length of decoded string: "
+ "data probably corrupted at scanline %d",
+ tif->tif_row);
+ return (0);
}
if (codep->length > occ) {
/*
@@ -494,14 +509,14 @@ LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
codep = codep->next;
} while (codep && codep->length > occ);
if (codep) {
- sp->dec_restart = occ;
+ sp->dec_restart = (long)occ;
tp = op + occ;
do {
*--tp = codep->value;
codep = codep->next;
} while (--occ && codep);
if (codep)
- codeLoop(tif);
+ codeLoop(tif, module);
}
break;
}
@@ -515,15 +530,16 @@ LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
*tp = t;
} while (codep && tp > op);
if (codep) {
- codeLoop(tif);
+ codeLoop(tif, module);
break;
}
+ assert(occ >= len);
op += len, occ -= len;
} else
*op++ = (char)code, occ--;
}
- tif->tif_rawcp = (tidata_t) bp;
+ tif->tif_rawcp = (uint8*) bp;
sp->lzw_nbits = (unsigned short) nbits;
sp->lzw_nextdata = nextdata;
sp->lzw_nextbits = nextbits;
@@ -533,9 +549,15 @@ LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
sp->dec_maxcodep = maxcodep;
if (occ > 0) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecode: Not enough data at scanline %d (short %ld bytes)",
- tif->tif_row, occ);
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %d (short %I64d bytes)",
+ tif->tif_row, (unsigned __int64) occ);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %d (short %llu bytes)",
+ tif->tif_row, (unsigned long long) occ);
+#endif
return (0);
}
return (1);
@@ -558,8 +580,9 @@ LZWDecode(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
}
static int
-LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
+LZWDecodeCompat(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
{
+ static const char module[] = "LZWDecodeCompat";
LZWCodecState *sp = DecoderState(tif);
char *op = (char*) op0;
long occ = (long) occ0;
@@ -571,6 +594,13 @@ LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
(void) s;
assert(sp != NULL);
+
+ /*
+ Fail if value does not fit in long.
+ */
+ if ((tmsize_t) occ != occ0)
+ return (0);
+
/*
* Restart interrupted output operation.
*/
@@ -632,7 +662,7 @@ LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
NextCode(tif, sp, bp, code, GetNextCodeCompat);
if (code == CODE_EOI)
break;
- if (code == CODE_CLEAR) {
+ if (code >= CODE_CLEAR) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"LZWDecode: Corrupted LZW table at scanline %d",
tif->tif_row);
@@ -645,22 +675,20 @@ LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
codep = sp->dec_codetab + code;
/*
- * Add the new entry to the code table.
- */
+ * Add the new entry to the code table.
+ */
if (free_entp < &sp->dec_codetab[0] ||
- free_entp >= &sp->dec_codetab[CSIZE]) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecodeCompat: Corrupted LZW table at scanline %d",
- tif->tif_row);
+ free_entp >= &sp->dec_codetab[CSIZE]) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Corrupted LZW table at scanline %d", tif->tif_row);
return (0);
}
free_entp->next = oldcodep;
if (free_entp->next < &sp->dec_codetab[0] ||
- free_entp->next >= &sp->dec_codetab[CSIZE]) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecodeCompat: Corrupted LZW table at scanline %d",
- tif->tif_row);
+ free_entp->next >= &sp->dec_codetab[CSIZE]) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Corrupted LZW table at scanline %d", tif->tif_row);
return (0);
}
free_entp->firstchar = free_entp->next->firstchar;
@@ -675,17 +703,16 @@ LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
}
oldcodep = codep;
if (code >= 256) {
- char *op_orig = op;
/*
- * Code maps to a string, copy string
+ * Code maps to a string, copy string
* value to output (written in reverse).
- */
+ */
if(codep->length == 0) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecodeCompat: Wrong length of decoded "
- "string: data probably corrupted at scanline %d",
- tif->tif_row);
- return (0);
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Wrong length of decoded "
+ "string: data probably corrupted at scanline %d",
+ tif->tif_row);
+ return (0);
}
if (codep->length > occ) {
/*
@@ -706,16 +733,17 @@ LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
} while (--occ);
break;
}
+ assert(occ >= codep->length);
op += codep->length, occ -= codep->length;
tp = op;
do {
*--tp = codep->value;
- } while( (codep = codep->next) != NULL && tp > op_orig);
+ } while( (codep = codep->next) != NULL );
} else
*op++ = code, occ--;
}
- tif->tif_rawcp = (tidata_t) bp;
+ tif->tif_rawcp = (uint8*) bp;
sp->lzw_nbits = nbits;
sp->lzw_nextdata = nextdata;
sp->lzw_nextbits = nextbits;
@@ -725,9 +753,15 @@ LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
sp->dec_maxcodep = maxcodep;
if (occ > 0) {
- TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
- "LZWDecodeCompat: Not enough data at scanline %d (short %ld bytes)",
- tif->tif_row, occ);
+#if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %d (short %I64d bytes)",
+ tif->tif_row, (unsigned __int64) occ);
+#else
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Not enough data at scanline %d (short %llu bytes)",
+ tif->tif_row, (unsigned long long) occ);
+#endif
return (0);
}
return (1);
@@ -741,13 +775,14 @@ LZWDecodeCompat(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
static int
LZWSetupEncode(TIFF* tif)
{
- LZWCodecState* sp = EncoderState(tif);
static const char module[] = "LZWSetupEncode";
+ LZWCodecState* sp = EncoderState(tif);
assert(sp != NULL);
sp->enc_hashtab = (hash_t*) _TIFFmalloc(HSIZE*sizeof (hash_t));
if (sp->enc_hashtab == NULL) {
- TIFFErrorExt(tif->tif_clientdata, module, "No space for LZW hash table");
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "No space for LZW hash table");
return (0);
}
return (1);
@@ -757,14 +792,14 @@ LZWSetupEncode(TIFF* tif)
* Reset encoding state at the start of a strip.
*/
static int
-LZWPreEncode(TIFF* tif, tsample_t s)
+LZWPreEncode(TIFF* tif, uint16 s)
{
LZWCodecState *sp = EncoderState(tif);
(void) s;
assert(sp != NULL);
-
- if( sp->enc_hashtab == NULL )
+
+ if( sp->enc_hashtab == NULL )
{
tif->tif_setupencode( tif );
}
@@ -822,7 +857,7 @@ LZWPreEncode(TIFF* tif, tsample_t s)
* for the decoder.
*/
static int
-LZWEncode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+LZWEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
{
register LZWCodecState *sp = EncoderState(tif);
register long fcode;
@@ -833,7 +868,8 @@ LZWEncode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
long incount, outcount, checkpoint;
long nextdata, nextbits;
int free_ent, maxcode, nbits;
- tidata_t op, limit;
+ uint8* op;
+ uint8* limit;
(void) s;
if (sp == NULL)
@@ -912,7 +948,7 @@ LZWEncode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
* are at least 4 bytes free--room for 2 codes.
*/
if (op > limit) {
- tif->tif_rawcc = (tsize_t)(op - tif->tif_rawdata);
+ tif->tif_rawcc = (tmsize_t)(op - tif->tif_rawdata);
TIFFFlushData1(tif);
op = tif->tif_rawdata;
}
@@ -990,14 +1026,14 @@ static int
LZWPostEncode(TIFF* tif)
{
register LZWCodecState *sp = EncoderState(tif);
- tidata_t op = tif->tif_rawcp;
+ uint8* op = tif->tif_rawcp;
long nextbits = sp->lzw_nextbits;
long nextdata = sp->lzw_nextdata;
long outcount = sp->enc_outcount;
int nbits = sp->lzw_nbits;
if (op > sp->enc_rawlimit) {
- tif->tif_rawcc = (tsize_t)(op - tif->tif_rawdata);
+ tif->tif_rawcc = (tmsize_t)(op - tif->tif_rawdata);
TIFFFlushData1(tif);
op = tif->tif_rawdata;
}
@@ -1008,7 +1044,7 @@ LZWPostEncode(TIFF* tif)
PutNextCode(op, CODE_EOI);
if (nextbits > 0)
*op++ = (unsigned char)(nextdata << (8-nextbits));
- tif->tif_rawcc = (tsize_t)(op - tif->tif_rawdata);
+ tif->tif_rawcc = (tmsize_t)(op - tif->tif_rawdata);
return (1);
}
@@ -1021,7 +1057,7 @@ cl_hash(LZWCodecState* sp)
register hash_t *hp = &sp->enc_hashtab[HSIZE-1];
register long i = HSIZE-8;
- do {
+ do {
i -= 8;
hp[-7].hash = -1;
hp[-6].hash = -1;
@@ -1033,7 +1069,7 @@ cl_hash(LZWCodecState* sp)
hp[ 0].hash = -1;
hp -= 8;
} while (i >= 0);
- for (i += 8; i > 0; i--, hp--)
+ for (i += 8; i > 0; i--, hp--)
hp->hash = -1;
}
@@ -1059,11 +1095,12 @@ LZWCleanup(TIFF* tif)
int
TIFFInitLZW(TIFF* tif, int scheme)
{
+ static const char module[] = "TIFFInitLZW";
assert(scheme == COMPRESSION_LZW);
/*
* Allocate state block so tag methods have storage to record values.
*/
- tif->tif_data = (tidata_t) _TIFFmalloc(sizeof (LZWCodecState));
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof (LZWCodecState));
if (tif->tif_data == NULL)
goto bad;
DecoderState(tif)->dec_codetab = NULL;
@@ -1074,6 +1111,7 @@ TIFFInitLZW(TIFF* tif, int scheme)
/*
* Install codec methods.
*/
+ tif->tif_fixuptags = LZWFixupTags;
tif->tif_setupdecode = LZWSetupDecode;
tif->tif_predecode = LZWPreDecode;
tif->tif_decoderow = LZWDecode;
@@ -1092,7 +1130,7 @@ TIFFInitLZW(TIFF* tif, int scheme)
(void) TIFFPredictorInit(tif);
return (1);
bad:
- TIFFErrorExt(tif->tif_clientdata, "TIFFInitLZW",
+ TIFFErrorExt(tif->tif_clientdata, module,
"No space for LZW state block");
return (0);
}
@@ -1120,3 +1158,10 @@ bad:
#endif /* LZW_SUPPORT */
/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 06:04:57 +0000