X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b47c832e5529dc6c632536b4665a005f0a85aec8..9f4de6b2cf06f53a98b28f53640f3b9ec8cf4182:/src/tiff/tif_fax3.c diff --git a/src/tiff/tif_fax3.c b/src/tiff/tif_fax3.c index 4be62aedea..a5471618f7 100644 --- a/src/tiff/tif_fax3.c +++ b/src/tiff/tif_fax3.c @@ -4,23 +4,23 @@ * Copyright (c) 1990-1997 Sam Leffler * Copyright (c) 1991-1997 Silicon Graphics, Inc. * - * Permission to use, copy, modify, distribute, and sell this software and + * Permission to use, copy, modify, distribute, and sell this software and * its documentation for any purpose is hereby granted without fee, provided * that (i) the above copyright notices and this permission notice appear in * all copies of the software and related documentation, and (ii) the names of * Sam Leffler and Silicon Graphics may not be used in any advertising or * publicity relating to the software without the specific, prior written * permission of Sam Leffler and Silicon Graphics. - * - * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, - * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY - * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. - * + * + * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, + * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY + * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. + * * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, - * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF - * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF + * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE * OF THIS SOFTWARE. */ @@ -85,13 +85,13 @@ typedef struct { #define DecoderState(tif) ((Fax3DecodeState*) Fax3State(tif)) typedef struct { - Fax3BaseState b; - int data; /* current i/o byte */ - int bit; /* current i/o bit in byte */ - enum { G3_1D, G3_2D } tag; /* encoding state */ - u_char* refline; /* reference line for 2d decoding */ - int k; /* #rows left that can be 2d encoded */ - int maxk; /* max #rows that can be 2d encoded */ + Fax3BaseState b; + int data; /* current i/o byte */ + int bit; /* current i/o bit in byte */ + enum { G3_1D, G3_2D } tag; /* encoding state */ + u_char* refline; /* reference line for 2d decoding */ + int k; /* #rows left that can be 2d encoded */ + int maxk; /* max #rows that can be 2d encoded */ } Fax3EncodeState; #define EncoderState(tif) ((Fax3EncodeState*) Fax3State(tif)) @@ -182,7 +182,7 @@ Fax3PreDecode(TIFF* tif, tsample_t s) * overriding the definitions used by the decoder. */ -static void +static void LINKAGEMODE Fax3Unexpected(const char* module, TIFF* tif, uint32 a0) { TIFFError(module, "%s: Bad code word at scanline %d (x %lu)", @@ -190,7 +190,7 @@ Fax3Unexpected(const char* module, TIFF* tif, uint32 a0) } #define unexpected(table, a0) Fax3Unexpected(module, tif, a0) -static void +static void LINKAGEMODE Fax3Extension(const char* module, TIFF* tif, uint32 a0) { TIFFError(module, @@ -199,7 +199,7 @@ Fax3Extension(const char* module, TIFF* tif, uint32 a0) } #define extension(a0) Fax3Extension(module, tif, a0) -static void +static void LINKAGEMODE Fax3BadLength(const char* module, TIFF* tif, uint32 a0, uint32 lastx) { TIFFWarning(module, "%s: %s at scanline %d (got %lu, expected %lu)", @@ -209,7 +209,7 @@ Fax3BadLength(const char* module, TIFF* tif, uint32 a0, uint32 lastx) } #define badlength(a0,lastx) Fax3BadLength(module, tif, a0, lastx) -static void +static void LINKAGEMODE Fax3PrematureEOF(const char* module, TIFF* tif, uint32 a0) { TIFFWarning(module, "%s: Premature EOF at scanline %d (x %lu)", @@ -222,7 +222,7 @@ Fax3PrematureEOF(const char* module, TIFF* tif, uint32 a0) /* * Decode the requested amount of G3 1D-encoded data. */ -static int +static int LINKAGEMODE Fax3Decode1D(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s) { DECLARE_STATE(tif, sp, "Fax3Decode1D"); @@ -262,7 +262,7 @@ Fax3Decode1D(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s) /* * Decode the requested amount of G3 2D-encoded data. */ -static int +static int LINKAGEMODE Fax3Decode2D(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s) { DECLARE_STATE_2D(tif, sp, "Fax3Decode2D"); @@ -499,7 +499,33 @@ Fax3SetupState(TIFF* tif) uint32 nruns = needsRefLine ? 2*TIFFroundup(rowpixels,32) : rowpixels; +#if 0 dsp->runs = (uint32*) _TIFFmalloc(nruns*sizeof (uint16)); +#endif + /* +Problem +------- + +Decoding the file frle_bug.tif causes a crash (such as with tiff2rgba). + +In particular the array dsp->runs allocated in Fax3SetupState() is overrun +by 4-8 bytes. This occurs when Fax3DecodeRLE() processes the first +scanline. The EXPAND1D() macro advances "pa" to be thisrun+512 (an +alias for dsp->runs), pointing just beyond the end of the array. Then +the call to _TIFFFax3fillruns() does an "*erun++ = 0;" which writes beyond +the end of the array. + +In the short term I have modified the dsp->runs allocation to add eight +extra bytes to the runs buffer; however, I am only doing this because I +don't understand the algorithm well enough to change it without risking +more adverse side effects. + +Frank Warmerdam (warmerda@home.com) + + */ + + dsp->runs = (uint32*) _TIFFmalloc(8+nruns*sizeof (uint32)); + if (dsp->runs == NULL) { TIFFError("Fax3SetupState", "%s: No space for Group 3/4 run arrays", @@ -574,7 +600,7 @@ static const int _msbmask[9] = * the output stream. Values are * assumed to be at most 16 bits. */ -static void +static void LINKAGEMODE Fax3PutBits(TIFF* tif, u_int bits, u_int length) { Fax3EncodeState* sp = EncoderState(tif); @@ -609,7 +635,7 @@ Fax3PutBits(TIFF* tif, u_int bits, u_int length) * appropriate table that holds the make-up and * terminating codes is supplied. */ -static void +static void LINKAGEMODE putspan(TIFF* tif, int32 span, const tableentry* tab) { Fax3EncodeState* sp = EncoderState(tif); @@ -652,7 +678,7 @@ putspan(TIFF* tif, int32 span, const tableentry* tab) * here. We also handle writing the tag bit for the next * scanline when doing 2d encoding. */ -static void +static void LINKAGEMODE Fax3PutEOL(TIFF* tif) { Fax3EncodeState* sp = EncoderState(tif); @@ -678,7 +704,12 @@ Fax3PutEOL(TIFF* tif) } code = EOL, length = 12; if (is2DEncoding(sp)) +#if defined(__VISAGECPP30__) +/* VA 3.0 is just plain wierd. */ + code = (code<<1) | (sp->tag == Fax3EncodeState::G3_1D), length++; +#else code = (code<<1) | (sp->tag == G3_1D), length++; +#endif _PutBits(tif, code, length); sp->data = data; @@ -697,7 +728,12 @@ Fax3PreEncode(TIFF* tif, tsample_t s) assert(sp != NULL); sp->bit = 8; sp->data = 0; +#if defined(__VISAGECPP30__) +/* VA 3.0 is just plain wierd. */ + sp->tag = Fax3EncodeState::G3_1D; +#else sp->tag = G3_1D; +#endif /* * This is necessary for Group 4; otherwise it isn't * needed because the first scanline of each strip ends @@ -778,7 +814,7 @@ static int32 find1span(u_char*, int32, int32); * table. The ``base'' of the bit string is supplied * along with the start+end bit indices. */ -INLINE static int32 +INLINE static int32 LINKAGEMODE find0span(u_char* bp, int32 bs, int32 be) { int32 bits = be - bs; @@ -837,7 +873,7 @@ find0span(u_char* bp, int32 bs, int32 be) return (span); } -INLINE static int32 +INLINE static int32 LINKAGEMODE find1span(u_char* bp, int32 bs, int32 be) { int32 bits = be - bs; @@ -916,7 +952,7 @@ find1span(u_char* bp, int32 bs, int32 be) * a sequence of all-white or all-black spans * of pixels encoded with Huffman codes. */ -static int +static int LINKAGEMODE Fax3Encode1DRow(TIFF* tif, u_char* bp, uint32 bits) { Fax3EncodeState* sp = EncoderState(tif); @@ -962,7 +998,7 @@ static const tableentry vcodes[7] = { * 2d-encode a row of pixels. Consult the CCITT * documentation for the algorithm. */ -static int +static int LINKAGEMODE Fax3Encode2DRow(TIFF* tif, u_char* bp, u_char* rp, uint32 bits) { #define PIXEL(buf,ix) ((((buf)[(ix)>>3]) >> (7-((ix)&7))) & 1) @@ -1007,7 +1043,7 @@ Fax3Encode2DRow(TIFF* tif, u_char* bp, u_char* rp, uint32 bits) /* * Encode a buffer of pixels. */ -static int +static int LINKAGEMODE Fax3Encode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s) { Fax3EncodeState* sp = EncoderState(tif); @@ -1017,17 +1053,32 @@ Fax3Encode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s) if ((sp->b.mode & FAXMODE_NOEOL) == 0) Fax3PutEOL(tif); if (is2DEncoding(sp)) { +#if defined(__VISAGECPP30__) +/* VA 3.0 is just plain wierd. */ + if (sp->tag == Fax3EncodeState::G3_1D) { +#else if (sp->tag == G3_1D) { +#endif if (!Fax3Encode1DRow(tif, bp, sp->b.rowpixels)) return (0); +#if defined(__VISAGECPP30__) +/* VA 3.0 is just plain wierd. */ + sp->tag = Fax3EncodeState::G3_2D; +#else sp->tag = G3_2D; +#endif } else { if (!Fax3Encode2DRow(tif, bp, sp->refline, sp->b.rowpixels)) return (0); sp->k--; } if (sp->k == 0) { +#if defined(__VISAGECPP30__) +/* VA 3.0 is just plain wierd. */ + sp->tag = Fax3EncodeState::G3_1D; +#else sp->tag = G3_1D; +#endif sp->k = sp->maxk-1; } else _TIFFmemcpy(sp->refline, bp, sp->b.rowbytes); @@ -1063,7 +1114,12 @@ Fax3Close(TIFF* tif) int i; if (is2DEncoding(sp)) +#if defined(__VISAGECPP30__) +/* VA 3.0 is just plain wierd. */ + code = (code<<1) | (sp->tag == Fax3EncodeState::G3_1D), length++; +#else code = (code<<1) | (sp->tag == G3_1D), length++; +#endif for (i = 0; i < 6; i++) Fax3PutBits(tif, code, length); Fax3FlushBits(tif, sp); @@ -1215,7 +1271,7 @@ Fax3VGetField(TIFF* tif, ttag_t tag, va_list ap) return (1); } -static void +static void LINKAGEMODE Fax3PrintDir(TIFF* tif, FILE* fd, long flags) { Fax3BaseState* sp = Fax3State(tif); @@ -1271,7 +1327,7 @@ Fax3PrintDir(TIFF* tif, FILE* fd, long flags) (u_long) sp->recvtime); } -static int +static int LINKAGEMODE InitCCITTFax3(TIFF* tif) { Fax3BaseState* sp; @@ -1280,9 +1336,15 @@ InitCCITTFax3(TIFF* tif) * Allocate state block so tag methods have storage to record values. */ if (tif->tif_mode == O_RDONLY) +#if defined(__VISAGECPP__) + tif->tif_data = (tidata_t)_TIFFmalloc(sizeof (Fax3DecodeState)); + else + tif->tif_data = (tidata_t)_TIFFmalloc(sizeof (Fax3EncodeState)); +#else tif->tif_data = _TIFFmalloc(sizeof (Fax3DecodeState)); else tif->tif_data = _TIFFmalloc(sizeof (Fax3EncodeState)); +#endif if (tif->tif_data == NULL) { TIFFError("TIFFInitCCITTFax3", "%s: No space for state block", tif->tif_name); @@ -1354,7 +1416,7 @@ TIFFInitCCITTFax3(TIFF* tif, int scheme) /* * Decode the requested amount of G4-encoded data. */ -static int +static int LINKAGEMODE Fax4Decode(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s) { DECLARE_STATE_2D(tif, sp, "Fax4Decode"); @@ -1394,7 +1456,7 @@ Fax4Decode(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s) /* * Encode the requested amount of data. */ -static int +static int LINKAGEMODE Fax4Encode(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s) { Fax3EncodeState *sp = EncoderState(tif); @@ -1454,7 +1516,7 @@ TIFFInitCCITTFax4(TIFF* tif, int scheme) /* * Decode the requested amount of RLE-encoded data. */ -static int +static int LINKAGEMODE Fax3DecodeRLE(TIFF* tif, tidata_t buf, tsize_t occ, tsample_t s) { DECLARE_STATE(tif, sp, "Fax3DecodeRLE");