diff options
Diffstat (limited to 'src/3rdparty/libtiff/libtiff/tif_predict.c')
-rw-r--r-- | src/3rdparty/libtiff/libtiff/tif_predict.c | 239 |
1 files changed, 137 insertions, 102 deletions
diff --git a/src/3rdparty/libtiff/libtiff/tif_predict.c b/src/3rdparty/libtiff/libtiff/tif_predict.c index 052a8e2..f93c664 100644 --- a/src/3rdparty/libtiff/libtiff/tif_predict.c +++ b/src/3rdparty/libtiff/libtiff/tif_predict.c @@ -1,4 +1,4 @@ -/* $Id: tif_predict.c,v 1.11.2.3 2009-01-23 15:57:18 fwarmerdam Exp $ */ +/* $Id: tif_predict.c,v 1.32 2010-03-10 18:56:49 bfriesen Exp $ */ /* * Copyright (c) 1988-1997 Sam Leffler @@ -34,20 +34,20 @@ #define PredictorState(tif) ((TIFFPredictorState*) (tif)->tif_data) -static void horAcc8(TIFF*, tidata_t, tsize_t); -static void horAcc16(TIFF*, tidata_t, tsize_t); -static void horAcc32(TIFF*, tidata_t, tsize_t); -static void swabHorAcc16(TIFF*, tidata_t, tsize_t); -static void swabHorAcc32(TIFF*, tidata_t, tsize_t); -static void horDiff8(TIFF*, tidata_t, tsize_t); -static void horDiff16(TIFF*, tidata_t, tsize_t); -static void horDiff32(TIFF*, tidata_t, tsize_t); -static void fpAcc(TIFF*, tidata_t, tsize_t); -static void fpDiff(TIFF*, tidata_t, tsize_t); -static int PredictorDecodeRow(TIFF*, tidata_t, tsize_t, tsample_t); -static int PredictorDecodeTile(TIFF*, tidata_t, tsize_t, tsample_t); -static int PredictorEncodeRow(TIFF*, tidata_t, tsize_t, tsample_t); -static int PredictorEncodeTile(TIFF*, tidata_t, tsize_t, tsample_t); +static void horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc); +static void horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc); +static void horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc); +static void swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc); +static void swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc); +static void horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc); +static void horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc); +static void horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc); +static void fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc); +static void fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc); +static int PredictorDecodeRow(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s); +static int PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s); +static int PredictorEncodeRow(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s); +static int PredictorEncodeTile(TIFF* tif, uint8* bp0, tmsize_t cc0, uint16 s); static int PredictorSetup(TIFF* tif) @@ -66,23 +66,23 @@ PredictorSetup(TIFF* tif) && td->td_bitspersample != 16 && td->td_bitspersample != 32) { TIFFErrorExt(tif->tif_clientdata, module, - "Horizontal differencing \"Predictor\" not supported with %d-bit samples", - td->td_bitspersample); + "Horizontal differencing \"Predictor\" not supported with %d-bit samples", + td->td_bitspersample); return 0; } break; case PREDICTOR_FLOATINGPOINT: if (td->td_sampleformat != SAMPLEFORMAT_IEEEFP) { TIFFErrorExt(tif->tif_clientdata, module, - "Floating point \"Predictor\" not supported with %d data format", - td->td_sampleformat); + "Floating point \"Predictor\" not supported with %d data format", + td->td_sampleformat); return 0; } break; default: TIFFErrorExt(tif->tif_clientdata, module, - "\"Predictor\" value %d not supported", - sp->predictor); + "\"Predictor\" value %d not supported", + sp->predictor); return 0; } sp->stride = (td->td_planarconfig == PLANARCONFIG_CONTIG ? @@ -94,6 +94,8 @@ PredictorSetup(TIFF* tif) sp->rowsize = TIFFTileRowSize(tif); else sp->rowsize = TIFFScanlineSize(tif); + if (sp->rowsize == 0) + return 0; return 1; } @@ -126,6 +128,7 @@ PredictorSetupDecode(TIFF* tif) sp->decodetile = tif->tif_decodetile; tif->tif_decodetile = PredictorDecodeTile; } + /* * If the data is horizontally differenced 16-bit data that * requires byte-swapping, then it must be byte swapped before @@ -137,10 +140,10 @@ PredictorSetupDecode(TIFF* tif) if (sp->decodepfunc == horAcc16) { sp->decodepfunc = swabHorAcc16; tif->tif_postdecode = _TIFFNoPostDecode; - } else if (sp->decodepfunc == horAcc32) { + } else if (sp->decodepfunc == horAcc32) { sp->decodepfunc = swabHorAcc32; tif->tif_postdecode = _TIFFNoPostDecode; - } + } } } @@ -205,7 +208,7 @@ PredictorSetupEncode(TIFF* tif) tif->tif_encodetile = PredictorEncodeTile; } } - + else if (sp->predictor == 3) { sp->encodepfunc = fpDiff; /* @@ -228,7 +231,7 @@ PredictorSetupEncode(TIFF* tif) #define REPEAT4(n, op) \ switch (n) { \ - default: { int i; for (i = n-4; i > 0; i--) { op; } } \ + default: { tmsize_t i; for (i = n-4; i > 0; i--) { op; } } \ case 4: op; \ case 3: op; \ case 2: op; \ @@ -237,13 +240,13 @@ PredictorSetupEncode(TIFF* tif) } static void -horAcc8(TIFF* tif, tidata_t cp0, tsize_t cc) +horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc) { - tsize_t stride = PredictorState(tif)->stride; + tmsize_t stride = PredictorState(tif)->stride; char* cp = (char*) cp0; + assert((cc%stride)==0); if (cc > stride) { - cc -= stride; /* * Pipeline the most common cases. */ @@ -251,40 +254,49 @@ horAcc8(TIFF* tif, tidata_t cp0, tsize_t cc) unsigned int cr = cp[0]; unsigned int cg = cp[1]; unsigned int cb = cp[2]; - do { - cc -= 3, cp += 3; + cc -= 3; + cp += 3; + while (cc>0) { cp[0] = (char) (cr += cp[0]); cp[1] = (char) (cg += cp[1]); cp[2] = (char) (cb += cp[2]); - } while ((int32) cc > 0); + cc -= 3; + cp += 3; + } } else if (stride == 4) { unsigned int cr = cp[0]; unsigned int cg = cp[1]; unsigned int cb = cp[2]; unsigned int ca = cp[3]; - do { - cc -= 4, cp += 4; + cc -= 4; + cp += 4; + while (cc>0) { cp[0] = (char) (cr += cp[0]); cp[1] = (char) (cg += cp[1]); cp[2] = (char) (cb += cp[2]); cp[3] = (char) (ca += cp[3]); - } while ((int32) cc > 0); + cc -= 4; + cp += 4; + } } else { + cc -= stride; do { REPEAT4(stride, cp[stride] = (char) (cp[stride] + *cp); cp++) cc -= stride; - } while ((int32) cc > 0); + } while (cc>0); } } } static void -swabHorAcc16(TIFF* tif, tidata_t cp0, tsize_t cc) +swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc) { - tsize_t stride = PredictorState(tif)->stride; + tmsize_t stride = PredictorState(tif)->stride; uint16* wp = (uint16*) cp0; - tsize_t wc = cc / 2; + tmsize_t wc = cc / 2; + + assert((cc%(2*stride))==0); if (wc > stride) { TIFFSwabArrayOfShort(wp, wc); @@ -292,32 +304,36 @@ swabHorAcc16(TIFF* tif, tidata_t cp0, tsize_t cc) do { REPEAT4(stride, wp[stride] += wp[0]; wp++) wc -= stride; - } while ((int32) wc > 0); + } while (wc > 0); } } static void -horAcc16(TIFF* tif, tidata_t cp0, tsize_t cc) +horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc) { - tsize_t stride = PredictorState(tif)->stride; + tmsize_t stride = PredictorState(tif)->stride; uint16* wp = (uint16*) cp0; - tsize_t wc = cc / 2; + tmsize_t wc = cc / 2; + + assert((cc%(2*stride))==0); if (wc > stride) { wc -= stride; do { REPEAT4(stride, wp[stride] += wp[0]; wp++) wc -= stride; - } while ((int32) wc > 0); + } while (wc > 0); } } static void -swabHorAcc32(TIFF* tif, tidata_t cp0, tsize_t cc) +swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc) { - tsize_t stride = PredictorState(tif)->stride; + tmsize_t stride = PredictorState(tif)->stride; uint32* wp = (uint32*) cp0; - tsize_t wc = cc / 4; + tmsize_t wc = cc / 4; + + assert((cc%(4*stride))==0); if (wc > stride) { TIFFSwabArrayOfLong(wp, wc); @@ -325,23 +341,25 @@ swabHorAcc32(TIFF* tif, tidata_t cp0, tsize_t cc) do { REPEAT4(stride, wp[stride] += wp[0]; wp++) wc -= stride; - } while ((int32) wc > 0); + } while (wc > 0); } } static void -horAcc32(TIFF* tif, tidata_t cp0, tsize_t cc) +horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc) { - tsize_t stride = PredictorState(tif)->stride; + tmsize_t stride = PredictorState(tif)->stride; uint32* wp = (uint32*) cp0; - tsize_t wc = cc / 4; + tmsize_t wc = cc / 4; + + assert((cc%(4*stride))==0); if (wc > stride) { wc -= stride; do { REPEAT4(stride, wp[stride] += wp[0]; wp++) wc -= stride; - } while ((int32) wc > 0); + } while (wc > 0); } } @@ -349,15 +367,17 @@ horAcc32(TIFF* tif, tidata_t cp0, tsize_t cc) * Floating point predictor accumulation routine. */ static void -fpAcc(TIFF* tif, tidata_t cp0, tsize_t cc) +fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc) { - tsize_t stride = PredictorState(tif)->stride; + tmsize_t stride = PredictorState(tif)->stride; uint32 bps = tif->tif_dir.td_bitspersample / 8; - tsize_t wc = cc / bps; - tsize_t count = cc; + tmsize_t wc = cc / bps; + tmsize_t count = cc; uint8 *cp = (uint8 *) cp0; uint8 *tmp = (uint8 *)_TIFFmalloc(cc); + assert((cc%(bps*stride))==0); + if (!tmp) return; @@ -371,12 +391,12 @@ fpAcc(TIFF* tif, tidata_t cp0, tsize_t cc) for (count = 0; count < wc; count++) { uint32 byte; for (byte = 0; byte < bps; byte++) { -#if WORDS_BIGENDIAN + #if WORDS_BIGENDIAN cp[bps * count + byte] = tmp[byte * wc + count]; -#else + #else cp[bps * count + byte] = tmp[(bps - byte - 1) * wc + count]; -#endif + #endif } } _TIFFfree(tmp); @@ -386,13 +406,13 @@ fpAcc(TIFF* tif, tidata_t cp0, tsize_t cc) * Decode a scanline and apply the predictor routine. */ static int -PredictorDecodeRow(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s) +PredictorDecodeRow(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s) { TIFFPredictorState *sp = PredictorState(tif); assert(sp != NULL); assert(sp->decoderow != NULL); - assert(sp->decodepfunc != NULL); + assert(sp->decodepfunc != NULL); if ((*sp->decoderow)(tif, op0, occ0, s)) { (*sp->decodepfunc)(tif, op0, occ0); @@ -409,7 +429,7 @@ PredictorDecodeRow(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s) * strip/tile dimensions. */ static int -PredictorDecodeTile(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s) +PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s) { TIFFPredictorState *sp = PredictorState(tif); @@ -417,11 +437,12 @@ PredictorDecodeTile(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s) assert(sp->decodetile != NULL); if ((*sp->decodetile)(tif, op0, occ0, s)) { - tsize_t rowsize = sp->rowsize; + tmsize_t rowsize = sp->rowsize; assert(rowsize > 0); + assert((occ0%rowsize)==0); assert(sp->decodepfunc != NULL); - while ((long)occ0 > 0) { - (*sp->decodepfunc)(tif, op0, (tsize_t) rowsize); + while (occ0 > 0) { + (*sp->decodepfunc)(tif, op0, rowsize); occ0 -= rowsize; op0 += rowsize; } @@ -431,12 +452,14 @@ PredictorDecodeTile(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s) } static void -horDiff8(TIFF* tif, tidata_t cp0, tsize_t cc) +horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc) { TIFFPredictorState* sp = PredictorState(tif); - tsize_t stride = sp->stride; + tmsize_t stride = sp->stride; char* cp = (char*) cp0; + assert((cc%stride)==0); + if (cc > stride) { cc -= stride; /* @@ -452,7 +475,7 @@ horDiff8(TIFF* tif, tidata_t cp0, tsize_t cc) g1 = cp[4]; cp[4] = g1-g2; g2 = g1; b1 = cp[5]; cp[5] = b1-b2; b2 = b1; cp += 3; - } while ((int32)(cc -= 3) > 0); + } while ((cc -= 3) > 0); } else if (stride == 4) { int r1, g1, b1, a1; int r2 = cp[0]; @@ -465,23 +488,25 @@ horDiff8(TIFF* tif, tidata_t cp0, tsize_t cc) b1 = cp[6]; cp[6] = b1-b2; b2 = b1; a1 = cp[7]; cp[7] = a1-a2; a2 = a1; cp += 4; - } while ((int32)(cc -= 4) > 0); + } while ((cc -= 4) > 0); } else { cp += cc - 1; do { REPEAT4(stride, cp[stride] -= cp[0]; cp--) - } while ((int32)(cc -= stride) > 0); + } while ((cc -= stride) > 0); } } } static void -horDiff16(TIFF* tif, tidata_t cp0, tsize_t cc) +horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc) { TIFFPredictorState* sp = PredictorState(tif); - tsize_t stride = sp->stride; + tmsize_t stride = sp->stride; int16 *wp = (int16*) cp0; - tsize_t wc = cc/2; + tmsize_t wc = cc/2; + + assert((cc%(2*stride))==0); if (wc > stride) { wc -= stride; @@ -489,17 +514,19 @@ horDiff16(TIFF* tif, tidata_t cp0, tsize_t cc) do { REPEAT4(stride, wp[stride] -= wp[0]; wp--) wc -= stride; - } while ((int32) wc > 0); + } while (wc > 0); } } static void -horDiff32(TIFF* tif, tidata_t cp0, tsize_t cc) +horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc) { TIFFPredictorState* sp = PredictorState(tif); - tsize_t stride = sp->stride; + tmsize_t stride = sp->stride; int32 *wp = (int32*) cp0; - tsize_t wc = cc/4; + tmsize_t wc = cc/4; + + assert((cc%(4*stride))==0); if (wc > stride) { wc -= stride; @@ -507,7 +534,7 @@ horDiff32(TIFF* tif, tidata_t cp0, tsize_t cc) do { REPEAT4(stride, wp[stride] -= wp[0]; wp--) wc -= stride; - } while ((int32) wc > 0); + } while (wc > 0); } } @@ -515,15 +542,17 @@ horDiff32(TIFF* tif, tidata_t cp0, tsize_t cc) * Floating point predictor differencing routine. */ static void -fpDiff(TIFF* tif, tidata_t cp0, tsize_t cc) +fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc) { - tsize_t stride = PredictorState(tif)->stride; + tmsize_t stride = PredictorState(tif)->stride; uint32 bps = tif->tif_dir.td_bitspersample / 8; - tsize_t wc = cc / bps; - tsize_t count; + tmsize_t wc = cc / bps; + tmsize_t count; uint8 *cp = (uint8 *) cp0; uint8 *tmp = (uint8 *)_TIFFmalloc(cc); + assert((cc%(bps*stride))==0); + if (!tmp) return; @@ -531,12 +560,12 @@ fpDiff(TIFF* tif, tidata_t cp0, tsize_t cc) for (count = 0; count < wc; count++) { uint32 byte; for (byte = 0; byte < bps; byte++) { -#if WORDS_BIGENDIAN - cp[byte * wc + count] = tmp[bps * count + byte]; -#else + #if WORDS_BIGENDIAN + cp[byte * wc + count] = tmp[bps * count + byte]; + #else cp[(bps - byte - 1) * wc + count] = tmp[bps * count + byte]; -#endif + #endif } } _TIFFfree(tmp); @@ -548,7 +577,7 @@ fpDiff(TIFF* tif, tidata_t cp0, tsize_t cc) } static int -PredictorEncodeRow(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s) +PredictorEncodeRow(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s) { TIFFPredictorState *sp = PredictorState(tif); @@ -562,12 +591,12 @@ PredictorEncodeRow(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s) } static int -PredictorEncodeTile(TIFF* tif, tidata_t bp0, tsize_t cc0, tsample_t s) +PredictorEncodeTile(TIFF* tif, uint8* bp0, tmsize_t cc0, uint16 s) { static const char module[] = "PredictorEncodeTile"; TIFFPredictorState *sp = PredictorState(tif); uint8 *working_copy; - tsize_t cc = cc0, rowsize; + tmsize_t cc = cc0, rowsize; unsigned char* bp; int result_code; @@ -583,7 +612,7 @@ PredictorEncodeTile(TIFF* tif, tidata_t bp0, tsize_t cc0, tsample_t s) if( working_copy == NULL ) { TIFFErrorExt(tif->tif_clientdata, module, - "Out of memory allocating %d byte temp buffer.", + "Out of memory allocating " TIFF_SSIZE_FORMAT " byte temp buffer.", cc0 ); return 0; } @@ -607,13 +636,12 @@ PredictorEncodeTile(TIFF* tif, tidata_t bp0, tsize_t cc0, tsample_t s) #define FIELD_PREDICTOR (FIELD_CODEC+0) /* XXX */ -static const TIFFFieldInfo predictFieldInfo[] = { - { TIFFTAG_PREDICTOR, 1, 1, TIFF_SHORT, FIELD_PREDICTOR, - FALSE, FALSE, "Predictor" }, +static const TIFFField predictFields[] = { + { TIFFTAG_PREDICTOR, 1, 1, TIFF_SHORT, 0, TIFF_SETGET_UINT16, TIFF_SETGET_UINT16, FIELD_PREDICTOR, FALSE, FALSE, "Predictor", NULL }, }; static int -PredictorVSetField(TIFF* tif, ttag_t tag, va_list ap) +PredictorVSetField(TIFF* tif, uint32 tag, va_list ap) { TIFFPredictorState *sp = PredictorState(tif); @@ -622,7 +650,7 @@ PredictorVSetField(TIFF* tif, ttag_t tag, va_list ap) switch (tag) { case TIFFTAG_PREDICTOR: - sp->predictor = (uint16) va_arg(ap, int); + sp->predictor = (uint16) va_arg(ap, uint16_vap); TIFFSetFieldBit(tif, FIELD_PREDICTOR); break; default: @@ -633,7 +661,7 @@ PredictorVSetField(TIFF* tif, ttag_t tag, va_list ap) } static int -PredictorVGetField(TIFF* tif, ttag_t tag, va_list ap) +PredictorVGetField(TIFF* tif, uint32 tag, va_list ap) { TIFFPredictorState *sp = PredictorState(tif); @@ -659,9 +687,9 @@ PredictorPrintDir(TIFF* tif, FILE* fd, long flags) if (TIFFFieldSet(tif,FIELD_PREDICTOR)) { fprintf(fd, " Predictor: "); switch (sp->predictor) { - case 1: fprintf(fd, "none "); break; - case 2: fprintf(fd, "horizontal differencing "); break; - case 3: fprintf(fd, "floating point predictor "); break; + case 1: fprintf(fd, "none "); break; + case 2: fprintf(fd, "horizontal differencing "); break; + case 3: fprintf(fd, "floating point predictor "); break; } fprintf(fd, "%u (0x%x)\n", sp->predictor, sp->predictor); } @@ -679,10 +707,10 @@ TIFFPredictorInit(TIFF* tif) /* * Merge codec-specific tag information. */ - if (!_TIFFMergeFieldInfo(tif, predictFieldInfo, - TIFFArrayCount(predictFieldInfo))) { + if (!_TIFFMergeFields(tif, predictFields, + TIFFArrayCount(predictFields))) { TIFFErrorExt(tif->tif_clientdata, "TIFFPredictorInit", - "Merging Predictor codec-specific tags failed"); + "Merging Predictor codec-specific tags failed"); return 0; } @@ -694,7 +722,7 @@ TIFFPredictorInit(TIFF* tif) PredictorVGetField;/* hook for predictor tag */ sp->vsetparent = tif->tif_tagmethods.vsetfield; tif->tif_tagmethods.vsetfield = - PredictorVSetField;/* hook for predictor tag */ + PredictorVSetField;/* hook for predictor tag */ sp->printdir = tif->tif_tagmethods.printdir; tif->tif_tagmethods.printdir = PredictorPrintDir; /* hook for predictor tag */ @@ -727,3 +755,10 @@ TIFFPredictorCleanup(TIFF* tif) } /* vim: set ts=8 sts=8 sw=8 noet: */ +/* + * Local Variables: + * mode: c + * c-basic-offset: 8 + * fill-column: 78 + * End: + */ |