501 lines
13 KiB
C
501 lines
13 KiB
C
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/*
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* Copyright (c) 2010, Andrey Kiselev <dron@ak4719.spb.edu>
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include "tiffiop.h"
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#ifdef LZMA_SUPPORT
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/*
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* TIFF Library.
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*
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* LZMA2 Compression Support
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*
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* You need an LZMA2 SDK to link with. See http://tukaani.org/xz/ for details.
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*
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* The codec is derived from ZLIB codec (tif_zip.c).
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*/
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#include "tif_predict.h"
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#include "lzma.h"
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#include <stdio.h>
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/*
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* State block for each open TIFF file using LZMA2 compression/decompression.
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*/
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typedef struct {
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TIFFPredictorState predict;
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lzma_stream stream;
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lzma_filter filters[LZMA_FILTERS_MAX + 1];
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lzma_options_delta opt_delta; /* delta filter options */
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lzma_options_lzma opt_lzma; /* LZMA2 filter options */
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int preset; /* compression level */
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lzma_check check; /* type of the integrity check */
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int state; /* state flags */
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#define LSTATE_INIT_DECODE 0x01
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#define LSTATE_INIT_ENCODE 0x02
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TIFFVGetMethod vgetparent; /* super-class method */
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TIFFVSetMethod vsetparent; /* super-class method */
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} LZMAState;
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#define LState(tif) ((LZMAState*) (tif)->tif_data)
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#define DecoderState(tif) LState(tif)
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#define EncoderState(tif) LState(tif)
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static int LZMAEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s);
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static int LZMADecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s);
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static const char *
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LZMAStrerror(lzma_ret ret)
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{
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switch (ret) {
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case LZMA_OK:
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return "operation completed successfully";
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case LZMA_STREAM_END:
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return "end of stream was reached";
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case LZMA_NO_CHECK:
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return "input stream has no integrity check";
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case LZMA_UNSUPPORTED_CHECK:
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return "cannot calculate the integrity check";
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case LZMA_GET_CHECK:
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return "integrity check type is now available";
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case LZMA_MEM_ERROR:
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return "cannot allocate memory";
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case LZMA_MEMLIMIT_ERROR:
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return "memory usage limit was reached";
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case LZMA_FORMAT_ERROR:
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return "file format not recognized";
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case LZMA_OPTIONS_ERROR:
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return "invalid or unsupported options";
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case LZMA_DATA_ERROR:
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return "data is corrupt";
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case LZMA_BUF_ERROR:
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return "no progress is possible (stream is truncated or corrupt)";
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case LZMA_PROG_ERROR:
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return "programming error";
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default:
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return "unidentified liblzma error";
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}
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}
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static int
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LZMAFixupTags(TIFF* tif)
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{
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(void) tif;
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return 1;
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}
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static int
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LZMASetupDecode(TIFF* tif)
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{
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LZMAState* sp = DecoderState(tif);
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assert(sp != NULL);
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/* if we were last encoding, terminate this mode */
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if (sp->state & LSTATE_INIT_ENCODE) {
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lzma_end(&sp->stream);
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sp->state = 0;
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}
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sp->state |= LSTATE_INIT_DECODE;
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return 1;
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}
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/*
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* Setup state for decoding a strip.
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*/
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static int
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LZMAPreDecode(TIFF* tif, uint16 s)
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{
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static const char module[] = "LZMAPreDecode";
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LZMAState* sp = DecoderState(tif);
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lzma_ret ret;
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(void) s;
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assert(sp != NULL);
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if( (sp->state & LSTATE_INIT_DECODE) == 0 )
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tif->tif_setupdecode(tif);
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sp->stream.next_in = tif->tif_rawdata;
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sp->stream.avail_in = (size_t) tif->tif_rawcc;
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if ((tmsize_t)sp->stream.avail_in != tif->tif_rawcc) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Liblzma cannot deal with buffers this size");
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return 0;
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}
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/*
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* Disable memory limit when decoding. UINT64_MAX is a flag to disable
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* the limit, we are passing (uint64_t)-1 which should be the same.
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*/
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ret = lzma_stream_decoder(&sp->stream, (uint64_t)-1, 0);
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if (ret != LZMA_OK) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Error initializing the stream decoder, %s",
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LZMAStrerror(ret));
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return 0;
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}
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return 1;
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}
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static int
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LZMADecode(TIFF* tif, uint8* op, tmsize_t occ, uint16 s)
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{
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static const char module[] = "LZMADecode";
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LZMAState* sp = DecoderState(tif);
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(void) s;
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assert(sp != NULL);
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assert(sp->state == LSTATE_INIT_DECODE);
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sp->stream.next_in = tif->tif_rawcp;
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sp->stream.avail_in = (size_t) tif->tif_rawcc;
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sp->stream.next_out = op;
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sp->stream.avail_out = (size_t) occ;
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if ((tmsize_t)sp->stream.avail_out != occ) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Liblzma cannot deal with buffers this size");
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return 0;
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}
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do {
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/*
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* Save the current stream state to properly recover from the
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* decoding errors later.
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*/
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const uint8_t *next_in = sp->stream.next_in;
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size_t avail_in = sp->stream.avail_in;
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lzma_ret ret = lzma_code(&sp->stream, LZMA_RUN);
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if (ret == LZMA_STREAM_END)
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break;
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if (ret == LZMA_MEMLIMIT_ERROR) {
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lzma_ret r = lzma_stream_decoder(&sp->stream,
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lzma_memusage(&sp->stream), 0);
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if (r != LZMA_OK) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Error initializing the stream decoder, %s",
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LZMAStrerror(r));
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break;
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}
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sp->stream.next_in = next_in;
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sp->stream.avail_in = avail_in;
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continue;
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}
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if (ret != LZMA_OK) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Decoding error at scanline %lu, %s",
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(unsigned long) tif->tif_row, LZMAStrerror(ret));
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break;
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}
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} while (sp->stream.avail_out > 0);
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if (sp->stream.avail_out != 0) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Not enough data at scanline %lu (short %lu bytes)",
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(unsigned long) tif->tif_row, (unsigned long) sp->stream.avail_out);
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return 0;
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}
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tif->tif_rawcp = (uint8 *)sp->stream.next_in; /* cast away const */
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tif->tif_rawcc = sp->stream.avail_in;
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return 1;
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}
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static int
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LZMASetupEncode(TIFF* tif)
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{
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LZMAState* sp = EncoderState(tif);
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assert(sp != NULL);
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if (sp->state & LSTATE_INIT_DECODE) {
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lzma_end(&sp->stream);
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sp->state = 0;
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}
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sp->state |= LSTATE_INIT_ENCODE;
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return 1;
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}
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/*
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* Reset encoding state at the start of a strip.
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*/
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static int
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LZMAPreEncode(TIFF* tif, uint16 s)
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{
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static const char module[] = "LZMAPreEncode";
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LZMAState *sp = EncoderState(tif);
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lzma_ret ret;
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(void) s;
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assert(sp != NULL);
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if( sp->state != LSTATE_INIT_ENCODE )
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tif->tif_setupencode(tif);
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sp->stream.next_out = tif->tif_rawdata;
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sp->stream.avail_out = (size_t)tif->tif_rawdatasize;
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if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Liblzma cannot deal with buffers this size");
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return 0;
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}
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ret = lzma_stream_encoder(&sp->stream, sp->filters, sp->check);
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if (ret != LZMA_OK) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Error in lzma_stream_encoder(): %s", LZMAStrerror(ret));
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return 0;
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}
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return 1;
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}
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/*
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* Encode a chunk of pixels.
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*/
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static int
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LZMAEncode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
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{
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static const char module[] = "LZMAEncode";
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LZMAState *sp = EncoderState(tif);
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assert(sp != NULL);
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assert(sp->state == LSTATE_INIT_ENCODE);
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(void) s;
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sp->stream.next_in = bp;
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sp->stream.avail_in = (size_t) cc;
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if ((tmsize_t)sp->stream.avail_in != cc) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Liblzma cannot deal with buffers this size");
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return 0;
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}
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do {
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lzma_ret ret = lzma_code(&sp->stream, LZMA_RUN);
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if (ret != LZMA_OK) {
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TIFFErrorExt(tif->tif_clientdata, module,
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"Encoding error at scanline %lu, %s",
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(unsigned long) tif->tif_row, LZMAStrerror(ret));
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return 0;
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}
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if (sp->stream.avail_out == 0) {
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tif->tif_rawcc = tif->tif_rawdatasize;
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TIFFFlushData1(tif);
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sp->stream.next_out = tif->tif_rawdata;
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sp->stream.avail_out = (size_t)tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in LZMAPreEncode */
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}
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} while (sp->stream.avail_in > 0);
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return 1;
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}
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/*
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* Finish off an encoded strip by flushing the last
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* string and tacking on an End Of Information code.
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*/
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static int
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LZMAPostEncode(TIFF* tif)
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{
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static const char module[] = "LZMAPostEncode";
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LZMAState *sp = EncoderState(tif);
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lzma_ret ret;
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sp->stream.avail_in = 0;
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do {
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ret = lzma_code(&sp->stream, LZMA_FINISH);
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switch (ret) {
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case LZMA_STREAM_END:
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case LZMA_OK:
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if ((tmsize_t)sp->stream.avail_out != tif->tif_rawdatasize) {
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tif->tif_rawcc =
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tif->tif_rawdatasize - sp->stream.avail_out;
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TIFFFlushData1(tif);
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sp->stream.next_out = tif->tif_rawdata;
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sp->stream.avail_out = (size_t)tif->tif_rawdatasize; /* this is a safe typecast, as check is made already in ZIPPreEncode */
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}
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break;
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default:
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TIFFErrorExt(tif->tif_clientdata, module, "Liblzma error: %s",
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LZMAStrerror(ret));
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return 0;
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}
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} while (ret != LZMA_STREAM_END);
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return 1;
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}
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static void
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LZMACleanup(TIFF* tif)
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{
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LZMAState* sp = LState(tif);
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assert(sp != 0);
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(void)TIFFPredictorCleanup(tif);
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tif->tif_tagmethods.vgetfield = sp->vgetparent;
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tif->tif_tagmethods.vsetfield = sp->vsetparent;
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if (sp->state) {
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lzma_end(&sp->stream);
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sp->state = 0;
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}
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_TIFFfree(sp);
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tif->tif_data = NULL;
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_TIFFSetDefaultCompressionState(tif);
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}
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static int
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LZMAVSetField(TIFF* tif, uint32 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 int
|
||
|
|
LZMAVGetField(TIFF* tif, uint32 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
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 },
|
||
|
|
};
|
||
|
|
|
||
|
|
int
|
||
|
|
TIFFInitLZMA(TIFF* tif, int scheme)
|
||
|
|
{
|
||
|
|
static const char module[] = "TIFFInitLZMA";
|
||
|
|
LZMAState* sp;
|
||
|
|
lzma_stream tmp_stream = LZMA_STREAM_INIT;
|
||
|
|
|
||
|
|
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*) _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;
|
||
|
|
bad:
|
||
|
|
TIFFErrorExt(tif->tif_clientdata, module,
|
||
|
|
"No space for LZMA2 state block");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#endif /* LZMA_SUPPORT */
|
||
|
|
|
||
|
|
/* vim: set ts=8 sts=8 sw=8 noet: */
|