diff options
Diffstat (limited to 'src/3rdparty/libtiff/libtiff/tif_lzma.c')
-rw-r--r-- | src/3rdparty/libtiff/libtiff/tif_lzma.c | 799 |
1 files changed, 408 insertions, 391 deletions
diff --git a/src/3rdparty/libtiff/libtiff/tif_lzma.c b/src/3rdparty/libtiff/libtiff/tif_lzma.c index fc04647..4cfd5e8 100644 --- a/src/3rdparty/libtiff/libtiff/tif_lzma.c +++ b/src/3rdparty/libtiff/libtiff/tif_lzma.c @@ -33,471 +33,488 @@ * The codec is derived from ZLIB codec (tif_zip.c). */ -#include "tif_predict.h" #include "lzma.h" +#include "tif_predict.h" #include <stdio.h> /* * State block for each open TIFF file using LZMA2 compression/decompression. */ -typedef struct { - TIFFPredictorState predict; - lzma_stream stream; - lzma_filter filters[LZMA_FILTERS_MAX + 1]; - lzma_options_delta opt_delta; /* delta filter options */ - lzma_options_lzma opt_lzma; /* LZMA2 filter options */ - int preset; /* compression level */ - lzma_check check; /* type of the integrity check */ - int state; /* state flags */ +typedef struct +{ + TIFFPredictorState predict; + lzma_stream stream; + lzma_filter filters[LZMA_FILTERS_MAX + 1]; + lzma_options_delta opt_delta; /* delta filter options */ + lzma_options_lzma opt_lzma; /* LZMA2 filter options */ + int preset; /* compression level */ + lzma_check check; /* type of the integrity check */ + int state; /* state flags */ #define LSTATE_INIT_DECODE 0x01 #define LSTATE_INIT_ENCODE 0x02 - TIFFVGetMethod vgetparent; /* super-class method */ - TIFFVSetMethod vsetparent; /* super-class method */ + TIFFVGetMethod vgetparent; /* super-class method */ + TIFFVSetMethod vsetparent; /* super-class method */ } LZMAState; -#define LState(tif) ((LZMAState*) (tif)->tif_data) -#define DecoderState(tif) LState(tif) -#define EncoderState(tif) LState(tif) +#define LState(tif) ((LZMAState *)(tif)->tif_data) +#define DecoderState(tif) LState(tif) +#define EncoderState(tif) LState(tif) -static int LZMAEncode(TIFF* tif, uint8_t* bp, tmsize_t cc, uint16_t s); -static int LZMADecode(TIFF* tif, uint8_t* op, tmsize_t occ, uint16_t s); +static int LZMAEncode(TIFF *tif, uint8_t *bp, tmsize_t cc, uint16_t s); +static int LZMADecode(TIFF *tif, uint8_t *op, tmsize_t occ, uint16_t s); -static const char * -LZMAStrerror(lzma_ret ret) +static const char *LZMAStrerror(lzma_ret ret) { - switch (ret) { - case LZMA_OK: - return "operation completed successfully"; - case LZMA_STREAM_END: - return "end of stream was reached"; - case LZMA_NO_CHECK: - return "input stream has no integrity check"; - case LZMA_UNSUPPORTED_CHECK: - return "cannot calculate the integrity check"; - case LZMA_GET_CHECK: - return "integrity check type is now available"; - case LZMA_MEM_ERROR: - return "cannot allocate memory"; - case LZMA_MEMLIMIT_ERROR: - return "memory usage limit was reached"; - case LZMA_FORMAT_ERROR: - return "file format not recognized"; - case LZMA_OPTIONS_ERROR: - return "invalid or unsupported options"; - case LZMA_DATA_ERROR: - return "data is corrupt"; - case LZMA_BUF_ERROR: - return "no progress is possible (stream is truncated or corrupt)"; - case LZMA_PROG_ERROR: - return "programming error"; - default: - return "unidentified liblzma error"; - } + switch (ret) + { + case LZMA_OK: + return "operation completed successfully"; + case LZMA_STREAM_END: + return "end of stream was reached"; + case LZMA_NO_CHECK: + return "input stream has no integrity check"; + case LZMA_UNSUPPORTED_CHECK: + return "cannot calculate the integrity check"; + case LZMA_GET_CHECK: + return "integrity check type is now available"; + case LZMA_MEM_ERROR: + return "cannot allocate memory"; + case LZMA_MEMLIMIT_ERROR: + return "memory usage limit was reached"; + case LZMA_FORMAT_ERROR: + return "file format not recognized"; + case LZMA_OPTIONS_ERROR: + return "invalid or unsupported options"; + case LZMA_DATA_ERROR: + return "data is corrupt"; + case LZMA_BUF_ERROR: + return "no progress is possible (stream is truncated or corrupt)"; + case LZMA_PROG_ERROR: + return "programming error"; + default: + return "unidentified liblzma error"; + } } -static int -LZMAFixupTags(TIFF* tif) +static int LZMAFixupTags(TIFF *tif) { - (void) tif; - return 1; + (void)tif; + return 1; } -static int -LZMASetupDecode(TIFF* tif) +static int LZMASetupDecode(TIFF *tif) { - LZMAState* sp = DecoderState(tif); - - assert(sp != NULL); - - /* if we were last encoding, terminate this mode */ - if (sp->state & LSTATE_INIT_ENCODE) { - lzma_end(&sp->stream); - sp->state = 0; - } - - sp->state |= LSTATE_INIT_DECODE; - return 1; + LZMAState *sp = DecoderState(tif); + + assert(sp != NULL); + + /* if we were last encoding, terminate this mode */ + if (sp->state & LSTATE_INIT_ENCODE) + { + lzma_end(&sp->stream); + sp->state = 0; + } + + sp->state |= LSTATE_INIT_DECODE; + return 1; } /* * Setup state for decoding a strip. */ -static int -LZMAPreDecode(TIFF* tif, uint16_t s) +static int LZMAPreDecode(TIFF *tif, uint16_t s) { - static const char module[] = "LZMAPreDecode"; - LZMAState* sp = DecoderState(tif); - lzma_ret ret; - - (void) s; - assert(sp != NULL); - - if( (sp->state & LSTATE_INIT_DECODE) == 0 ) - tif->tif_setupdecode(tif); - - sp->stream.next_in = tif->tif_rawdata; - sp->stream.avail_in = (size_t) tif->tif_rawcc; - if ((tmsize_t)sp->stream.avail_in != tif->tif_rawcc) { - TIFFErrorExt(tif->tif_clientdata, module, - "Liblzma cannot deal with buffers this size"); - return 0; - } - - /* - * Disable memory limit when decoding. UINT64_MAX is a flag to disable - * the limit, we are passing (uint64_t)-1 which should be the same. - */ - ret = lzma_stream_decoder(&sp->stream, (uint64_t)-1, 0); - if (ret != LZMA_OK) { - TIFFErrorExt(tif->tif_clientdata, module, - "Error initializing the stream decoder, %s", - LZMAStrerror(ret)); - return 0; - } - return 1; + static const char module[] = "LZMAPreDecode"; + LZMAState *sp = DecoderState(tif); + lzma_ret ret; + + (void)s; + assert(sp != NULL); + + if ((sp->state & LSTATE_INIT_DECODE) == 0) + tif->tif_setupdecode(tif); + + sp->stream.next_in = tif->tif_rawdata; + sp->stream.avail_in = (size_t)tif->tif_rawcc; + if ((tmsize_t)sp->stream.avail_in != tif->tif_rawcc) + { + TIFFErrorExtR(tif, module, + "Liblzma cannot deal with buffers this size"); + return 0; + } + + /* + * Disable memory limit when decoding. UINT64_MAX is a flag to disable + * the limit, we are passing (uint64_t)-1 which should be the same. + */ + ret = lzma_stream_decoder(&sp->stream, (uint64_t)-1, 0); + if (ret != LZMA_OK) + { + TIFFErrorExtR(tif, module, "Error initializing the stream decoder, %s", + LZMAStrerror(ret)); + return 0; + } + return 1; } -static int -LZMADecode(TIFF* tif, uint8_t* op, tmsize_t occ, uint16_t s) +static int LZMADecode(TIFF *tif, uint8_t *op, tmsize_t occ, uint16_t s) { - static const char module[] = "LZMADecode"; - LZMAState* sp = DecoderState(tif); - - (void) s; - assert(sp != NULL); - assert(sp->state == LSTATE_INIT_DECODE); - - sp->stream.next_in = tif->tif_rawcp; - sp->stream.avail_in = (size_t) tif->tif_rawcc; - - sp->stream.next_out = op; - sp->stream.avail_out = (size_t) occ; - if ((tmsize_t)sp->stream.avail_out != occ) { - TIFFErrorExt(tif->tif_clientdata, module, - "Liblzma cannot deal with buffers this size"); - return 0; - } - - do { - /* - * Save the current stream state to properly recover from the - * decoding errors later. - */ - const uint8_t *next_in = sp->stream.next_in; - size_t avail_in = sp->stream.avail_in; - - lzma_ret ret = lzma_code(&sp->stream, LZMA_RUN); - if (ret == LZMA_STREAM_END) - break; - if (ret == LZMA_MEMLIMIT_ERROR) { - lzma_ret r = lzma_stream_decoder(&sp->stream, - lzma_memusage(&sp->stream), 0); - if (r != LZMA_OK) { - TIFFErrorExt(tif->tif_clientdata, module, - "Error initializing the stream decoder, %s", - LZMAStrerror(r)); - break; - } - sp->stream.next_in = next_in; - sp->stream.avail_in = avail_in; - continue; - } - if (ret != LZMA_OK) { - TIFFErrorExt(tif->tif_clientdata, module, - "Decoding error at scanline %"PRIu32", %s", - tif->tif_row, LZMAStrerror(ret)); - break; - } - } while (sp->stream.avail_out > 0); - if (sp->stream.avail_out != 0) { - TIFFErrorExt(tif->tif_clientdata, module, - "Not enough data at scanline %"PRIu32" (short %"TIFF_SIZE_FORMAT" bytes)", - tif->tif_row, sp->stream.avail_out); - return 0; - } - - tif->tif_rawcp = (uint8_t *)sp->stream.next_in; /* cast away const */ - tif->tif_rawcc = sp->stream.avail_in; - - return 1; + static const char module[] = "LZMADecode"; + LZMAState *sp = DecoderState(tif); + + (void)s; + assert(sp != NULL); + assert(sp->state == LSTATE_INIT_DECODE); + + sp->stream.next_in = tif->tif_rawcp; + sp->stream.avail_in = (size_t)tif->tif_rawcc; + + sp->stream.next_out = op; + sp->stream.avail_out = (size_t)occ; + if ((tmsize_t)sp->stream.avail_out != occ) + { + TIFFErrorExtR(tif, module, + "Liblzma cannot deal with buffers this size"); + return 0; + } + + do + { + /* + * Save the current stream state to properly recover from the + * decoding errors later. + */ + const uint8_t *next_in = sp->stream.next_in; + size_t avail_in = sp->stream.avail_in; + + lzma_ret ret = lzma_code(&sp->stream, LZMA_RUN); + if (ret == LZMA_STREAM_END) + break; + if (ret == LZMA_MEMLIMIT_ERROR) + { + lzma_ret r = + lzma_stream_decoder(&sp->stream, lzma_memusage(&sp->stream), 0); + if (r != LZMA_OK) + { + TIFFErrorExtR(tif, module, + "Error initializing the stream decoder, %s", + LZMAStrerror(r)); + break; + } + sp->stream.next_in = next_in; + sp->stream.avail_in = avail_in; + continue; + } + if (ret != LZMA_OK) + { + TIFFErrorExtR(tif, module, + "Decoding error at scanline %" PRIu32 ", %s", + tif->tif_row, LZMAStrerror(ret)); + break; + } + } while (sp->stream.avail_out > 0); + if (sp->stream.avail_out != 0) + { + TIFFErrorExtR(tif, module, + "Not enough data at scanline %" PRIu32 + " (short %" TIFF_SIZE_FORMAT " bytes)", + tif->tif_row, sp->stream.avail_out); + return 0; + } + + tif->tif_rawcp = (uint8_t *)sp->stream.next_in; /* cast away const */ + tif->tif_rawcc = sp->stream.avail_in; + + return 1; } -static int -LZMASetupEncode(TIFF* tif) +static int LZMASetupEncode(TIFF *tif) { - LZMAState* sp = EncoderState(tif); + LZMAState *sp = EncoderState(tif); - assert(sp != NULL); - if (sp->state & LSTATE_INIT_DECODE) { - lzma_end(&sp->stream); - sp->state = 0; - } + assert(sp != NULL); + if (sp->state & LSTATE_INIT_DECODE) + { + lzma_end(&sp->stream); + sp->state = 0; + } - sp->state |= LSTATE_INIT_ENCODE; - return 1; + sp->state |= LSTATE_INIT_ENCODE; + return 1; } /* * Reset encoding state at the start of a strip. */ -static int -LZMAPreEncode(TIFF* tif, uint16_t s) +static int LZMAPreEncode(TIFF *tif, uint16_t s) { - static const char module[] = "LZMAPreEncode"; - LZMAState *sp = EncoderState(tif); - lzma_ret ret; - - (void) s; - assert(sp != NULL); - if( sp->state != LSTATE_INIT_ENCODE ) - tif->tif_setupencode(tif); - - sp->stream.next_out = tif->tif_rawdata; - sp->stream.avail_out = (size_t)tif->tif_rawdatasize; - if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) { - TIFFErrorExt(tif->tif_clientdata, module, - "Liblzma cannot deal with buffers this size"); - return 0; - } - ret = lzma_stream_encoder(&sp->stream, sp->filters, sp->check); - if (ret != LZMA_OK) { - TIFFErrorExt(tif->tif_clientdata, module, - "Error in lzma_stream_encoder(): %s", LZMAStrerror(ret)); - return 0; - } - return 1; + static const char module[] = "LZMAPreEncode"; + LZMAState *sp = EncoderState(tif); + lzma_ret ret; + + (void)s; + assert(sp != NULL); + if (sp->state != LSTATE_INIT_ENCODE) + tif->tif_setupencode(tif); + + sp->stream.next_out = tif->tif_rawdata; + sp->stream.avail_out = (size_t)tif->tif_rawdatasize; + if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) + { + TIFFErrorExtR(tif, module, + "Liblzma cannot deal with buffers this size"); + return 0; + } + ret = lzma_stream_encoder(&sp->stream, sp->filters, sp->check); + if (ret != LZMA_OK) + { + TIFFErrorExtR(tif, module, "Error in lzma_stream_encoder(): %s", + LZMAStrerror(ret)); + return 0; + } + return 1; } /* * Encode a chunk of pixels. */ -static int -LZMAEncode(TIFF* tif, uint8_t* bp, tmsize_t cc, uint16_t s) +static int LZMAEncode(TIFF *tif, uint8_t *bp, tmsize_t cc, uint16_t s) { - static const char module[] = "LZMAEncode"; - LZMAState *sp = EncoderState(tif); - - assert(sp != NULL); - assert(sp->state == LSTATE_INIT_ENCODE); - - (void) s; - sp->stream.next_in = bp; - sp->stream.avail_in = (size_t) cc; - if ((tmsize_t)sp->stream.avail_in != cc) { - TIFFErrorExt(tif->tif_clientdata, module, - "Liblzma cannot deal with buffers this size"); - return 0; - } - do { - lzma_ret ret = lzma_code(&sp->stream, LZMA_RUN); - if (ret != LZMA_OK) { - TIFFErrorExt(tif->tif_clientdata, module, - "Encoding error at scanline %"PRIu32", %s", - tif->tif_row, LZMAStrerror(ret)); - return 0; - } - if (sp->stream.avail_out == 0) { - tif->tif_rawcc = tif->tif_rawdatasize; - if (!TIFFFlushData1(tif)) - return 0; - sp->stream.next_out = tif->tif_rawdata; - sp->stream.avail_out = (size_t)tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in LZMAPreEncode */ - } - } while (sp->stream.avail_in > 0); - return 1; + static const char module[] = "LZMAEncode"; + LZMAState *sp = EncoderState(tif); + + assert(sp != NULL); + assert(sp->state == LSTATE_INIT_ENCODE); + + (void)s; + sp->stream.next_in = bp; + sp->stream.avail_in = (size_t)cc; + if ((tmsize_t)sp->stream.avail_in != cc) + { + TIFFErrorExtR(tif, module, + "Liblzma cannot deal with buffers this size"); + return 0; + } + do + { + lzma_ret ret = lzma_code(&sp->stream, LZMA_RUN); + if (ret != LZMA_OK) + { + TIFFErrorExtR(tif, module, + "Encoding error at scanline %" PRIu32 ", %s", + tif->tif_row, LZMAStrerror(ret)); + return 0; + } + if (sp->stream.avail_out == 0) + { + tif->tif_rawcc = tif->tif_rawdatasize; + if (!TIFFFlushData1(tif)) + return 0; + sp->stream.next_out = tif->tif_rawdata; + sp->stream.avail_out = + (size_t) + tif->tif_rawdatasize; /* this is a safe typecast, as check + is made already in LZMAPreEncode */ + } + } while (sp->stream.avail_in > 0); + return 1; } /* * Finish off an encoded strip by flushing the last * string and tacking on an End Of Information code. */ -static int -LZMAPostEncode(TIFF* tif) +static int LZMAPostEncode(TIFF *tif) { - static const char module[] = "LZMAPostEncode"; - LZMAState *sp = EncoderState(tif); - lzma_ret ret; - - sp->stream.avail_in = 0; - do { - ret = lzma_code(&sp->stream, LZMA_FINISH); - switch (ret) { - case LZMA_STREAM_END: - case LZMA_OK: - if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) { - tif->tif_rawcc = - tif->tif_rawdatasize - sp->stream.avail_out; - if (!TIFFFlushData1(tif)) - return 0; - sp->stream.next_out = tif->tif_rawdata; - sp->stream.avail_out = (size_t)tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in ZIPPreEncode */ - } - break; - default: - TIFFErrorExt(tif->tif_clientdata, module, "Liblzma error: %s", - LZMAStrerror(ret)); - return 0; - } - } while (ret != LZMA_STREAM_END); - return 1; + static const char module[] = "LZMAPostEncode"; + LZMAState *sp = EncoderState(tif); + lzma_ret ret; + + sp->stream.avail_in = 0; + do + { + ret = lzma_code(&sp->stream, LZMA_FINISH); + switch (ret) + { + case LZMA_STREAM_END: + case LZMA_OK: + if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) + { + tif->tif_rawcc = + tif->tif_rawdatasize - sp->stream.avail_out; + if (!TIFFFlushData1(tif)) + return 0; + sp->stream.next_out = tif->tif_rawdata; + sp->stream.avail_out = + (size_t) + tif->tif_rawdatasize; /* this is a safe typecast, as + check is made already in + ZIPPreEncode */ + } + break; + default: + TIFFErrorExtR(tif, module, "Liblzma error: %s", + LZMAStrerror(ret)); + return 0; + } + } while (ret != LZMA_STREAM_END); + return 1; } -static void -LZMACleanup(TIFF* tif) +static void LZMACleanup(TIFF *tif) { - LZMAState* sp = LState(tif); + LZMAState *sp = LState(tif); - assert(sp != 0); + assert(sp != 0); - (void)TIFFPredictorCleanup(tif); + (void)TIFFPredictorCleanup(tif); - tif->tif_tagmethods.vgetfield = sp->vgetparent; - tif->tif_tagmethods.vsetfield = sp->vsetparent; + tif->tif_tagmethods.vgetfield = sp->vgetparent; + tif->tif_tagmethods.vsetfield = sp->vsetparent; - if (sp->state) { - lzma_end(&sp->stream); - sp->state = 0; - } - _TIFFfree(sp); - tif->tif_data = NULL; + if (sp->state) + { + lzma_end(&sp->stream); + sp->state = 0; + } + _TIFFfreeExt(tif, sp); + tif->tif_data = NULL; - _TIFFSetDefaultCompressionState(tif); + _TIFFSetDefaultCompressionState(tif); } -static int -LZMAVSetField(TIFF* tif, uint32_t tag, va_list ap) +static int LZMAVSetField(TIFF *tif, uint32_t tag, va_list ap) { - static const char module[] = "LZMAVSetField"; - LZMAState* sp = LState(tif); - - switch (tag) { - case TIFFTAG_LZMAPRESET: - sp->preset = (int) va_arg(ap, int); - lzma_lzma_preset(&sp->opt_lzma, sp->preset); - if (sp->state & LSTATE_INIT_ENCODE) { - lzma_ret ret = lzma_stream_encoder(&sp->stream, - sp->filters, - sp->check); - if (ret != LZMA_OK) { - TIFFErrorExt(tif->tif_clientdata, module, - "Liblzma error: %s", - LZMAStrerror(ret)); - } - } - return 1; - default: - return (*sp->vsetparent)(tif, tag, ap); - } - /*NOTREACHED*/ + static const char module[] = "LZMAVSetField"; + LZMAState *sp = LState(tif); + + switch (tag) + { + case TIFFTAG_LZMAPRESET: + sp->preset = (int)va_arg(ap, int); + lzma_lzma_preset(&sp->opt_lzma, sp->preset); + if (sp->state & LSTATE_INIT_ENCODE) + { + lzma_ret ret = + lzma_stream_encoder(&sp->stream, sp->filters, sp->check); + if (ret != LZMA_OK) + { + TIFFErrorExtR(tif, module, "Liblzma error: %s", + LZMAStrerror(ret)); + } + } + return 1; + default: + return (*sp->vsetparent)(tif, tag, ap); + } + /*NOTREACHED*/ } -static int -LZMAVGetField(TIFF* tif, uint32_t tag, va_list ap) +static int LZMAVGetField(TIFF *tif, uint32_t tag, va_list ap) { - LZMAState* sp = LState(tif); - - switch (tag) { - case TIFFTAG_LZMAPRESET: - *va_arg(ap, int*) = sp->preset; - break; - default: - return (*sp->vgetparent)(tif, tag, ap); - } - return 1; + LZMAState *sp = LState(tif); + + switch (tag) + { + case TIFFTAG_LZMAPRESET: + *va_arg(ap, int *) = sp->preset; + break; + default: + return (*sp->vgetparent)(tif, tag, ap); + } + return 1; } static const TIFFField lzmaFields[] = { - { TIFFTAG_LZMAPRESET, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, TIFF_SETGET_UNDEFINED, - FIELD_PSEUDO, TRUE, FALSE, "LZMA2 Compression Preset", NULL }, + {TIFFTAG_LZMAPRESET, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT, + TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, + "LZMA2 Compression Preset", NULL}, }; -int -TIFFInitLZMA(TIFF* tif, int scheme) +int TIFFInitLZMA(TIFF *tif, int scheme) { - static const char module[] = "TIFFInitLZMA"; - LZMAState* sp; - lzma_stream tmp_stream = LZMA_STREAM_INIT; - - (void)scheme; - assert( scheme == COMPRESSION_LZMA ); - - /* - * Merge codec-specific tag information. - */ - if (!_TIFFMergeFields(tif, lzmaFields, TIFFArrayCount(lzmaFields))) { - TIFFErrorExt(tif->tif_clientdata, module, - "Merging LZMA2 codec-specific tags failed"); - return 0; - } - - /* - * Allocate state block so tag methods have storage to record values. - */ - tif->tif_data = (uint8_t*) _TIFFmalloc(sizeof(LZMAState)); - if (tif->tif_data == NULL) - goto bad; - sp = LState(tif); - memcpy(&sp->stream, &tmp_stream, sizeof(lzma_stream)); - - /* - * Override parent get/set field methods. - */ - sp->vgetparent = tif->tif_tagmethods.vgetfield; - tif->tif_tagmethods.vgetfield = LZMAVGetField; /* hook for codec tags */ - sp->vsetparent = tif->tif_tagmethods.vsetfield; - tif->tif_tagmethods.vsetfield = LZMAVSetField; /* hook for codec tags */ - - /* Default values for codec-specific fields */ - sp->preset = LZMA_PRESET_DEFAULT; /* default comp. level */ - sp->check = LZMA_CHECK_NONE; - sp->state = 0; - - /* Data filters. So far we are using delta and LZMA2 filters only. */ - sp->opt_delta.type = LZMA_DELTA_TYPE_BYTE; - /* - * The sample size in bytes seems to be reasonable distance for delta - * filter. - */ - sp->opt_delta.dist = (tif->tif_dir.td_bitspersample % 8) ? - 1 : tif->tif_dir.td_bitspersample / 8; - sp->filters[0].id = LZMA_FILTER_DELTA; - sp->filters[0].options = &sp->opt_delta; - - lzma_lzma_preset(&sp->opt_lzma, sp->preset); - sp->filters[1].id = LZMA_FILTER_LZMA2; - sp->filters[1].options = &sp->opt_lzma; - - sp->filters[2].id = LZMA_VLI_UNKNOWN; - sp->filters[2].options = NULL; - - /* - * Install codec methods. - */ - tif->tif_fixuptags = LZMAFixupTags; - tif->tif_setupdecode = LZMASetupDecode; - tif->tif_predecode = LZMAPreDecode; - tif->tif_decoderow = LZMADecode; - tif->tif_decodestrip = LZMADecode; - tif->tif_decodetile = LZMADecode; - tif->tif_setupencode = LZMASetupEncode; - tif->tif_preencode = LZMAPreEncode; - tif->tif_postencode = LZMAPostEncode; - tif->tif_encoderow = LZMAEncode; - tif->tif_encodestrip = LZMAEncode; - tif->tif_encodetile = LZMAEncode; - tif->tif_cleanup = LZMACleanup; - /* - * Setup predictor setup. - */ - (void) TIFFPredictorInit(tif); - return 1; + static const char module[] = "TIFFInitLZMA"; + LZMAState *sp; + lzma_stream tmp_stream = LZMA_STREAM_INIT; + + (void)scheme; + assert(scheme == COMPRESSION_LZMA); + + /* + * Merge codec-specific tag information. + */ + if (!_TIFFMergeFields(tif, lzmaFields, TIFFArrayCount(lzmaFields))) + { + TIFFErrorExtR(tif, module, "Merging LZMA2 codec-specific tags failed"); + return 0; + } + + /* + * Allocate state block so tag methods have storage to record values. + */ + tif->tif_data = (uint8_t *)_TIFFmallocExt(tif, sizeof(LZMAState)); + if (tif->tif_data == NULL) + goto bad; + sp = LState(tif); + memcpy(&sp->stream, &tmp_stream, sizeof(lzma_stream)); + + /* + * Override parent get/set field methods. + */ + sp->vgetparent = tif->tif_tagmethods.vgetfield; + tif->tif_tagmethods.vgetfield = LZMAVGetField; /* hook for codec tags */ + sp->vsetparent = tif->tif_tagmethods.vsetfield; + tif->tif_tagmethods.vsetfield = LZMAVSetField; /* hook for codec tags */ + + /* Default values for codec-specific fields */ + sp->preset = LZMA_PRESET_DEFAULT; /* default comp. level */ + sp->check = LZMA_CHECK_NONE; + sp->state = 0; + + /* Data filters. So far we are using delta and LZMA2 filters only. */ + sp->opt_delta.type = LZMA_DELTA_TYPE_BYTE; + /* + * The sample size in bytes seems to be reasonable distance for delta + * filter. + */ + sp->opt_delta.dist = (tif->tif_dir.td_bitspersample % 8) + ? 1 + : tif->tif_dir.td_bitspersample / 8; + sp->filters[0].id = LZMA_FILTER_DELTA; + sp->filters[0].options = &sp->opt_delta; + + lzma_lzma_preset(&sp->opt_lzma, sp->preset); + sp->filters[1].id = LZMA_FILTER_LZMA2; + sp->filters[1].options = &sp->opt_lzma; + + sp->filters[2].id = LZMA_VLI_UNKNOWN; + sp->filters[2].options = NULL; + + /* + * Install codec methods. + */ + tif->tif_fixuptags = LZMAFixupTags; + tif->tif_setupdecode = LZMASetupDecode; + tif->tif_predecode = LZMAPreDecode; + tif->tif_decoderow = LZMADecode; + tif->tif_decodestrip = LZMADecode; + tif->tif_decodetile = LZMADecode; + tif->tif_setupencode = LZMASetupEncode; + tif->tif_preencode = LZMAPreEncode; + tif->tif_postencode = LZMAPostEncode; + tif->tif_encoderow = LZMAEncode; + tif->tif_encodestrip = LZMAEncode; + tif->tif_encodetile = LZMAEncode; + tif->tif_cleanup = LZMACleanup; + /* + * Setup predictor setup. + */ + (void)TIFFPredictorInit(tif); + return 1; bad: - TIFFErrorExt(tif->tif_clientdata, module, - "No space for LZMA2 state block"); - return 0; + TIFFErrorExtR(tif, module, "No space for LZMA2 state block"); + return 0; } #endif /* LZMA_SUPPORT */ - -/* vim: set ts=8 sts=8 sw=8 noet: */ |