-/* $Id$ */
/*
* Copyright (c) 1995-1997 Sam Leffler
* State block for each open TIFF
* file using ZIP compression/decompression.
*/
-typedef struct {
+typedef struct {
TIFFPredictorState predict;
- z_stream stream;
- int zipquality; /* compression level */
- int state; /* state flags */
-#define ZSTATE_INIT 0x1 /* zlib setup successfully */
-
- TIFFVGetMethod vgetparent; /* super-class method */
- TIFFVSetMethod vsetparent; /* super-class method */
+ z_stream stream;
+ int zipquality; /* compression level */
+ int state; /* state flags */
+#define ZSTATE_INIT_DECODE 0x01
+#define ZSTATE_INIT_ENCODE 0x02
+
+ TIFFVGetMethod vgetparent; /* super-class method */
+ TIFFVSetMethod vsetparent; /* super-class method */
} ZIPState;
-#define ZState(tif) ((ZIPState*) (tif)->tif_data)
-#define DecoderState(tif) ZState(tif)
-#define EncoderState(tif) ZState(tif)
+#define ZState(tif) ((ZIPState*) (tif)->tif_data)
+#define DecoderState(tif) ZState(tif)
+#define EncoderState(tif) ZState(tif)
+
+static int ZIPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s);
+static int ZIPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s);
-static int ZIPEncode(TIFF*, tidata_t, tsize_t, tsample_t);
-static int ZIPDecode(TIFF*, tidata_t, tsize_t, tsample_t);
+static int
+ZIPFixupTags(TIFF* tif)
+{
+ (void) tif;
+ return (1);
+}
static int
ZIPSetupDecode(TIFF* tif)
{
- ZIPState* sp = DecoderState(tif);
static const char module[] = "ZIPSetupDecode";
+ ZIPState* sp = DecoderState(tif);
assert(sp != NULL);
+
+ /* if we were last encoding, terminate this mode */
+ if (sp->state & ZSTATE_INIT_ENCODE) {
+ deflateEnd(&sp->stream);
+ sp->state = 0;
+ }
+
if (inflateInit(&sp->stream) != Z_OK) {
- TIFFErrorExt(tif->tif_clientdata, module, "%s: %s", tif->tif_name, sp->stream.msg);
+ TIFFErrorExt(tif->tif_clientdata, module, "%s", sp->stream.msg);
return (0);
} else {
- sp->state |= ZSTATE_INIT;
+ sp->state |= ZSTATE_INIT_DECODE;
return (1);
}
}
* Setup state for decoding a strip.
*/
static int
-ZIPPreDecode(TIFF* tif, tsample_t s)
+ZIPPreDecode(TIFF* tif, uint16 s)
{
+ static const char module[] = "ZIPPreDecode";
ZIPState* sp = DecoderState(tif);
(void) s;
assert(sp != NULL);
+
+ if( (sp->state & ZSTATE_INIT_DECODE) == 0 )
+ tif->tif_setupdecode( tif );
+
sp->stream.next_in = tif->tif_rawdata;
- sp->stream.avail_in = tif->tif_rawcc;
+ assert(sizeof(sp->stream.avail_in)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_in = (uInt) tif->tif_rawcc;
+ if ((tmsize_t)sp->stream.avail_in != tif->tif_rawcc)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
return (inflateReset(&sp->stream) == Z_OK);
}
static int
-ZIPDecode(TIFF* tif, tidata_t op, tsize_t occ, tsample_t s)
+ZIPDecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
{
- ZIPState* sp = DecoderState(tif);
static const char module[] = "ZIPDecode";
+ ZIPState* sp = DecoderState(tif);
(void) s;
assert(sp != NULL);
+ assert(sp->state == ZSTATE_INIT_DECODE);
+
+ sp->stream.next_in = tif->tif_rawcp;
+ sp->stream.avail_in = (uInt) tif->tif_rawcc;
+
sp->stream.next_out = op;
- sp->stream.avail_out = occ;
+ assert(sizeof(sp->stream.avail_out)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_out = (uInt) occ;
+ if ((tmsize_t)sp->stream.avail_out != occ)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
do {
int state = inflate(&sp->stream, Z_PARTIAL_FLUSH);
if (state == Z_STREAM_END)
break;
if (state == Z_DATA_ERROR) {
TIFFErrorExt(tif->tif_clientdata, module,
- "%s: Decoding error at scanline %d, %s",
- tif->tif_name, tif->tif_row, sp->stream.msg);
+ "Decoding error at scanline %lu, %s",
+ (unsigned long) tif->tif_row, sp->stream.msg);
if (inflateSync(&sp->stream) != Z_OK)
return (0);
continue;
}
if (state != Z_OK) {
- TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
- tif->tif_name, sp->stream.msg);
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
return (0);
}
} while (sp->stream.avail_out > 0);
if (sp->stream.avail_out != 0) {
TIFFErrorExt(tif->tif_clientdata, module,
- "%s: Not enough data at scanline %d (short %d bytes)",
- tif->tif_name, tif->tif_row, sp->stream.avail_out);
+ "Not enough data at scanline %lu (short " TIFF_UINT64_FORMAT " bytes)",
+ (unsigned long) tif->tif_row, (TIFF_UINT64_T) sp->stream.avail_out);
return (0);
}
+
+ tif->tif_rawcp = sp->stream.next_in;
+ tif->tif_rawcc = sp->stream.avail_in;
+
return (1);
}
static int
ZIPSetupEncode(TIFF* tif)
{
- ZIPState* sp = EncoderState(tif);
static const char module[] = "ZIPSetupEncode";
+ ZIPState* sp = EncoderState(tif);
assert(sp != NULL);
+ if (sp->state & ZSTATE_INIT_DECODE) {
+ inflateEnd(&sp->stream);
+ sp->state = 0;
+ }
+
if (deflateInit(&sp->stream, sp->zipquality) != Z_OK) {
- TIFFErrorExt(tif->tif_clientdata, module, "%s: %s", tif->tif_name, sp->stream.msg);
+ TIFFErrorExt(tif->tif_clientdata, module, "%s", sp->stream.msg);
return (0);
} else {
- sp->state |= ZSTATE_INIT;
+ sp->state |= ZSTATE_INIT_ENCODE;
return (1);
}
}
* Reset encoding state at the start of a strip.
*/
static int
-ZIPPreEncode(TIFF* tif, tsample_t s)
+ZIPPreEncode(TIFF* tif, uint16 s)
{
+ static const char module[] = "ZIPPreEncode";
ZIPState *sp = EncoderState(tif);
(void) s;
assert(sp != NULL);
+ if( sp->state != ZSTATE_INIT_ENCODE )
+ tif->tif_setupencode( tif );
+
sp->stream.next_out = tif->tif_rawdata;
+ assert(sizeof(sp->stream.avail_out)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
sp->stream.avail_out = tif->tif_rawdatasize;
+ if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
return (deflateReset(&sp->stream) == Z_OK);
}
* Encode a chunk of pixels.
*/
static int
-ZIPEncode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
+ZIPEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
{
- ZIPState *sp = EncoderState(tif);
static const char module[] = "ZIPEncode";
+ ZIPState *sp = EncoderState(tif);
+
+ assert(sp != NULL);
+ assert(sp->state == ZSTATE_INIT_ENCODE);
(void) s;
sp->stream.next_in = bp;
- sp->stream.avail_in = cc;
+ assert(sizeof(sp->stream.avail_in)==4); /* if this assert gets raised,
+ we need to simplify this code to reflect a ZLib that is likely updated
+ to deal with 8byte memory sizes, though this code will respond
+ apropriately even before we simplify it */
+ sp->stream.avail_in = (uInt) cc;
+ if ((tmsize_t)sp->stream.avail_in != cc)
+ {
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib cannot deal with buffers this size");
+ return (0);
+ }
do {
if (deflate(&sp->stream, Z_NO_FLUSH) != Z_OK) {
- TIFFErrorExt(tif->tif_clientdata, module, "%s: Encoder error: %s",
- tif->tif_name, sp->stream.msg);
+ TIFFErrorExt(tif->tif_clientdata, module, "Encoder error: %s",
+ sp->stream.msg);
return (0);
}
if (sp->stream.avail_out == 0) {
tif->tif_rawcc = tif->tif_rawdatasize;
TIFFFlushData1(tif);
sp->stream.next_out = tif->tif_rawdata;
- sp->stream.avail_out = tif->tif_rawdatasize;
+ sp->stream.avail_out = (uInt) tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in ZIPPreEncode */
}
} while (sp->stream.avail_in > 0);
return (1);
static int
ZIPPostEncode(TIFF* tif)
{
- ZIPState *sp = EncoderState(tif);
static const char module[] = "ZIPPostEncode";
+ ZIPState *sp = EncoderState(tif);
int state;
sp->stream.avail_in = 0;
switch (state) {
case Z_STREAM_END:
case Z_OK:
- if ((int)sp->stream.avail_out != (int)tif->tif_rawdatasize)
- {
- tif->tif_rawcc =
- tif->tif_rawdatasize - sp->stream.avail_out;
- TIFFFlushData1(tif);
- sp->stream.next_out = tif->tif_rawdata;
- sp->stream.avail_out = tif->tif_rawdatasize;
- }
- break;
+ if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize)
+ {
+ tif->tif_rawcc = tif->tif_rawdatasize - sp->stream.avail_out;
+ TIFFFlushData1(tif);
+ sp->stream.next_out = tif->tif_rawdata;
+ sp->stream.avail_out = (uInt) tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in ZIPPreEncode */
+ }
+ break;
default:
- TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
- tif->tif_name, sp->stream.msg);
- return (0);
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
+ return (0);
}
} while (state != Z_STREAM_END);
return (1);
tif->tif_tagmethods.vgetfield = sp->vgetparent;
tif->tif_tagmethods.vsetfield = sp->vsetparent;
- if (sp->state&ZSTATE_INIT) {
- /* NB: avoid problems in the library */
- if (tif->tif_mode == O_RDONLY)
- inflateEnd(&sp->stream);
- else
- deflateEnd(&sp->stream);
+ if (sp->state & ZSTATE_INIT_ENCODE) {
+ deflateEnd(&sp->stream);
+ sp->state = 0;
+ } else if( sp->state & ZSTATE_INIT_DECODE) {
+ inflateEnd(&sp->stream);
+ sp->state = 0;
}
_TIFFfree(sp);
tif->tif_data = NULL;
}
static int
-ZIPVSetField(TIFF* tif, ttag_t tag, va_list ap)
+ZIPVSetField(TIFF* tif, uint32 tag, va_list ap)
{
- ZIPState* sp = ZState(tif);
static const char module[] = "ZIPVSetField";
+ ZIPState* sp = ZState(tif);
switch (tag) {
case TIFFTAG_ZIPQUALITY:
- sp->zipquality = va_arg(ap, int);
- if (tif->tif_mode != O_RDONLY && (sp->state&ZSTATE_INIT)) {
+ sp->zipquality = (int) va_arg(ap, int);
+ if ( sp->state&ZSTATE_INIT_ENCODE ) {
if (deflateParams(&sp->stream,
sp->zipquality, Z_DEFAULT_STRATEGY) != Z_OK) {
- TIFFErrorExt(tif->tif_clientdata, module, "%s: zlib error: %s",
- tif->tif_name, sp->stream.msg);
+ TIFFErrorExt(tif->tif_clientdata, module, "ZLib error: %s",
+ sp->stream.msg);
return (0);
}
}
}
static int
-ZIPVGetField(TIFF* tif, ttag_t tag, va_list ap)
+ZIPVGetField(TIFF* tif, uint32 tag, va_list ap)
{
ZIPState* sp = ZState(tif);
return (1);
}
-static const TIFFFieldInfo zipFieldInfo[] = {
- { TIFFTAG_ZIPQUALITY, 0, 0, TIFF_ANY, FIELD_PSEUDO,
- TRUE, FALSE, "" },
+static const TIFFField zipFields[] = {
+ { TIFFTAG_ZIPQUALITY, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "", NULL },
};
int
TIFFInitZIP(TIFF* tif, int scheme)
{
+ static const char module[] = "TIFFInitZIP";
ZIPState* sp;
assert( (scheme == COMPRESSION_DEFLATE)
|| (scheme == COMPRESSION_ADOBE_DEFLATE));
+ /*
+ * Merge codec-specific tag information.
+ */
+ if (!_TIFFMergeFields(tif, zipFields, TIFFArrayCount(zipFields))) {
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Merging Deflate codec-specific tags failed");
+ return 0;
+ }
+
/*
* Allocate state block so tag methods have storage to record values.
*/
- tif->tif_data = (tidata_t) _TIFFmalloc(sizeof (ZIPState));
+ tif->tif_data = (uint8*) _TIFFmalloc(sizeof (ZIPState));
if (tif->tif_data == NULL)
goto bad;
sp = ZState(tif);
sp->stream.data_type = Z_BINARY;
/*
- * Merge codec-specific tag information and
- * override parent get/set field methods.
+ * Override parent get/set field methods.
*/
- _TIFFMergeFieldInfo(tif, zipFieldInfo, TIFFArrayCount(zipFieldInfo));
sp->vgetparent = tif->tif_tagmethods.vgetfield;
tif->tif_tagmethods.vgetfield = ZIPVGetField; /* hook for codec tags */
sp->vsetparent = tif->tif_tagmethods.vsetfield;
/*
* Install codec methods.
*/
+ tif->tif_fixuptags = ZIPFixupTags;
tif->tif_setupdecode = ZIPSetupDecode;
tif->tif_predecode = ZIPPreDecode;
tif->tif_decoderow = ZIPDecode;
tif->tif_decodestrip = ZIPDecode;
- tif->tif_decodetile = ZIPDecode;
+ tif->tif_decodetile = ZIPDecode;
tif->tif_setupencode = ZIPSetupEncode;
tif->tif_preencode = ZIPPreEncode;
tif->tif_postencode = ZIPPostEncode;
(void) TIFFPredictorInit(tif);
return (1);
bad:
- TIFFErrorExt(tif->tif_clientdata, "TIFFInitZIP",
+ TIFFErrorExt(tif->tif_clientdata, module,
"No space for ZIP state block");
return (0);
}
#endif /* ZIP_SUPORT */
/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
projects / wxWidgets.git / blobdiff