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opencv/3rdparty/libtiff/tif_lerc.c
Michael Klatis 52f3f5a3f6
libtiff upgrade to version 4.6.0 (#25096) 
* libtiff upgrade to version 4.6.0

* fix tiffvers.h cmake generation

* temp: force build 3rd party deps from source

* remove libport.h and spintf.c

* cmake fixes

* don't use tiff_dummy_namespace on windows

* introduce numeric_types namespace alias

* include cstdint

* uint16_t is not a numeric_types type

* fix uint16 and uint32 type defs

* use standard c++ types

* remove unused files

* remove more unused files

* revert build 3rd party code from source

---------

Co-authored-by: Misha Klatis <misha.klatis@autodesk.com>
2024-03-22 04:08:16 +03:00

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/*
* Copyright (c) 2018, Even Rouault
* Author: <even.rouault at spatialys.com>
*
* 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.
*
* 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
* OF THIS SOFTWARE.
*/
#include "tiffiop.h"
#ifdef LERC_SUPPORT
/*
* TIFF Library.
*
* LERC Compression Support
*
*/
#include "Lerc_c_api.h"
#include "zlib.h"
#ifdef ZSTD_SUPPORT
#include "zstd.h"
#endif
#if LIBDEFLATE_SUPPORT
#include "libdeflate.h"
#endif
#define LIBDEFLATE_MAX_COMPRESSION_LEVEL 12
#include <assert.h>
#define LSTATE_INIT_DECODE 0x01
#define LSTATE_INIT_ENCODE 0x02
#ifndef LERC_AT_LEAST_VERSION
#define LERC_AT_LEAST_VERSION(maj, min, patch) 0
#endif
/*
* State block for each open TIFF file using LERC compression/decompression.
*/
typedef struct
{
double maxzerror; /* max z error */
int lerc_version;
int additional_compression;
int zstd_compress_level; /* zstd */
int zipquality; /* deflate */
int state; /* state flags */
uint32_t segment_width;
uint32_t segment_height;
unsigned int uncompressed_size;
unsigned int uncompressed_alloc;
uint8_t *uncompressed_buffer;
unsigned int uncompressed_offset;
unsigned int mask_size;
uint8_t *mask_buffer;
unsigned int compressed_size;
void *compressed_buffer;
#if LIBDEFLATE_SUPPORT
struct libdeflate_decompressor *libdeflate_dec;
struct libdeflate_compressor *libdeflate_enc;
#endif
TIFFVGetMethod vgetparent; /* super-class method */
TIFFVSetMethod vsetparent; /* super-class method */
} LERCState;
#define LState(tif) ((LERCState *)(tif)->tif_data)
#define DecoderState(tif) LState(tif)
#define EncoderState(tif) LState(tif)
static int LERCEncode(TIFF *tif, uint8_t *bp, tmsize_t cc, uint16_t s);
static int LERCDecode(TIFF *tif, uint8_t *op, tmsize_t occ, uint16_t s);
static int LERCFixupTags(TIFF *tif)
{
(void)tif;
return 1;
}
static int LERCSetupDecode(TIFF *tif)
{
LERCState *sp = DecoderState(tif);
assert(sp != NULL);
/* if we were last encoding, terminate this mode */
if (sp->state & LSTATE_INIT_ENCODE)
{
sp->state = 0;
}
sp->state |= LSTATE_INIT_DECODE;
return 1;
}
static int GetLercDataType(TIFF *tif)
{
TIFFDirectory *td = &tif->tif_dir;
static const char module[] = "GetLercDataType";
if (td->td_sampleformat == SAMPLEFORMAT_INT && td->td_bitspersample == 8)
{
return 0;
}
if (td->td_sampleformat == SAMPLEFORMAT_UINT && td->td_bitspersample == 8)
{
return 1;
}
if (td->td_sampleformat == SAMPLEFORMAT_INT && td->td_bitspersample == 16)
{
return 2;
}
if (td->td_sampleformat == SAMPLEFORMAT_UINT && td->td_bitspersample == 16)
{
return 3;
}
if (td->td_sampleformat == SAMPLEFORMAT_INT && td->td_bitspersample == 32)
{
return 4;
}
if (td->td_sampleformat == SAMPLEFORMAT_UINT && td->td_bitspersample == 32)
{
return 5;
}
if (td->td_sampleformat == SAMPLEFORMAT_IEEEFP &&
td->td_bitspersample == 32)
{
return 6;
}
if (td->td_sampleformat == SAMPLEFORMAT_IEEEFP &&
td->td_bitspersample == 64)
{
return 7;
}
TIFFErrorExtR(
tif, module,
"Unsupported combination of SampleFormat and td_bitspersample");
return -1;
}
static int SetupUncompressedBuffer(TIFF *tif, LERCState *sp, const char *module)
{
TIFFDirectory *td = &tif->tif_dir;
uint64_t new_size_64;
uint64_t new_alloc_64;
unsigned int new_size;
unsigned int new_alloc;
sp->uncompressed_offset = 0;
if (isTiled(tif))
{
sp->segment_width = td->td_tilewidth;
sp->segment_height = td->td_tilelength;
}
else
{
sp->segment_width = td->td_imagewidth;
sp->segment_height = td->td_imagelength - tif->tif_row;
if (sp->segment_height > td->td_rowsperstrip)
sp->segment_height = td->td_rowsperstrip;
}
new_size_64 = (uint64_t)sp->segment_width * sp->segment_height *
(td->td_bitspersample / 8);
if (td->td_planarconfig == PLANARCONFIG_CONTIG)
{
new_size_64 *= td->td_samplesperpixel;
}
new_size = (unsigned int)new_size_64;
sp->uncompressed_size = new_size;
/* add some margin as we are going to use it also to store deflate/zstd
* compressed data */
new_alloc_64 = 100 + new_size_64 + new_size_64 / 3;
#ifdef ZSTD_SUPPORT
{
size_t zstd_max = ZSTD_compressBound((size_t)new_size_64);
if (new_alloc_64 < zstd_max)
{
new_alloc_64 = zstd_max;
}
}
#endif
new_alloc = (unsigned int)new_alloc_64;
if (new_alloc != new_alloc_64)
{
TIFFErrorExtR(tif, module, "Too large uncompressed strip/tile");
_TIFFfreeExt(tif, sp->uncompressed_buffer);
sp->uncompressed_buffer = 0;
sp->uncompressed_alloc = 0;
return 0;
}
if (sp->uncompressed_alloc < new_alloc)
{
_TIFFfreeExt(tif, sp->uncompressed_buffer);
sp->uncompressed_buffer = _TIFFmallocExt(tif, new_alloc);
if (!sp->uncompressed_buffer)
{
TIFFErrorExtR(tif, module, "Cannot allocate buffer");
_TIFFfreeExt(tif, sp->uncompressed_buffer);
sp->uncompressed_buffer = 0;
sp->uncompressed_alloc = 0;
return 0;
}
sp->uncompressed_alloc = new_alloc;
}
if ((td->td_planarconfig == PLANARCONFIG_CONTIG &&
td->td_extrasamples > 0 &&
td->td_sampleinfo[td->td_extrasamples - 1] == EXTRASAMPLE_UNASSALPHA &&
GetLercDataType(tif) == 1) ||
(td->td_sampleformat == SAMPLEFORMAT_IEEEFP &&
(td->td_planarconfig == PLANARCONFIG_SEPARATE ||
td->td_samplesperpixel == 1) &&
(td->td_bitspersample == 32 || td->td_bitspersample == 64)))
{
unsigned int mask_size = sp->segment_width * sp->segment_height;
if (sp->mask_size < mask_size)
{
void *mask_buffer =
_TIFFreallocExt(tif, sp->mask_buffer, mask_size);
if (mask_buffer == NULL)
{
TIFFErrorExtR(tif, module, "Cannot allocate buffer");
sp->mask_size = 0;
_TIFFfreeExt(tif, sp->uncompressed_buffer);
sp->uncompressed_buffer = 0;
sp->uncompressed_alloc = 0;
return 0;
}
sp->mask_buffer = (uint8_t *)mask_buffer;
sp->mask_size = mask_size;
}
}
return 1;
}
/*
* Setup state for decoding a strip.
*/
static int LERCPreDecode(TIFF *tif, uint16_t s)
{
static const char module[] = "LERCPreDecode";
lerc_status lerc_ret;
TIFFDirectory *td = &tif->tif_dir;
LERCState *sp = DecoderState(tif);
int lerc_data_type;
unsigned int infoArray[8];
unsigned nomask_bands = td->td_samplesperpixel;
int ndims;
int use_mask = 0;
uint8_t *lerc_data = tif->tif_rawcp;
unsigned int lerc_data_size = (unsigned int)tif->tif_rawcc;
(void)s;
assert(sp != NULL);
if (sp->state != LSTATE_INIT_DECODE)
tif->tif_setupdecode(tif);
lerc_data_type = GetLercDataType(tif);
if (lerc_data_type < 0)
return 0;
if (!SetupUncompressedBuffer(tif, sp, module))
return 0;
if (sp->additional_compression != LERC_ADD_COMPRESSION_NONE)
{
if (sp->compressed_size < sp->uncompressed_alloc)
{
_TIFFfreeExt(tif, sp->compressed_buffer);
sp->compressed_buffer = _TIFFmallocExt(tif, sp->uncompressed_alloc);
if (!sp->compressed_buffer)
{
sp->compressed_size = 0;
return 0;
}
sp->compressed_size = sp->uncompressed_alloc;
}
}
if (sp->additional_compression == LERC_ADD_COMPRESSION_DEFLATE)
{
#if LIBDEFLATE_SUPPORT
enum libdeflate_result res;
size_t lerc_data_sizet = 0;
if (sp->libdeflate_dec == NULL)
{
sp->libdeflate_dec = libdeflate_alloc_decompressor();
if (sp->libdeflate_dec == NULL)
{
TIFFErrorExtR(tif, module, "Cannot allocate decompressor");
return 0;
}
}
res = libdeflate_zlib_decompress(
sp->libdeflate_dec, tif->tif_rawcp, (size_t)tif->tif_rawcc,
sp->compressed_buffer, sp->compressed_size, &lerc_data_sizet);
if (res != LIBDEFLATE_SUCCESS)
{
TIFFErrorExtR(tif, module, "Decoding error at scanline %lu",
(unsigned long)tif->tif_row);
return 0;
}
assert(lerc_data_sizet == (unsigned int)lerc_data_sizet);
lerc_data = sp->compressed_buffer;
lerc_data_size = (unsigned int)lerc_data_sizet;
#else
z_stream strm;
int zlib_ret;
memset(&strm, 0, sizeof(strm));
strm.zalloc = NULL;
strm.zfree = NULL;
strm.opaque = NULL;
zlib_ret = inflateInit(&strm);
if (zlib_ret != Z_OK)
{
TIFFErrorExtR(tif, module, "inflateInit() failed");
inflateEnd(&strm);
return 0;
}
strm.avail_in = (uInt)tif->tif_rawcc;
strm.next_in = tif->tif_rawcp;
strm.avail_out = sp->compressed_size;
strm.next_out = sp->compressed_buffer;
zlib_ret = inflate(&strm, Z_FINISH);
if (zlib_ret != Z_STREAM_END && zlib_ret != Z_OK)
{
TIFFErrorExtR(tif, module, "inflate() failed");
inflateEnd(&strm);
return 0;
}
lerc_data = sp->compressed_buffer;
lerc_data_size = sp->compressed_size - strm.avail_out;
inflateEnd(&strm);
#endif
}
else if (sp->additional_compression == LERC_ADD_COMPRESSION_ZSTD)
{
#ifdef ZSTD_SUPPORT
size_t zstd_ret;
zstd_ret = ZSTD_decompress(sp->compressed_buffer, sp->compressed_size,
tif->tif_rawcp, tif->tif_rawcc);
if (ZSTD_isError(zstd_ret))
{
TIFFErrorExtR(tif, module, "Error in ZSTD_decompress(): %s",
ZSTD_getErrorName(zstd_ret));
return 0;
}
lerc_data = sp->compressed_buffer;
lerc_data_size = (unsigned int)zstd_ret;
#else
TIFFErrorExtR(tif, module, "ZSTD support missing");
return 0;
#endif
}
else if (sp->additional_compression != LERC_ADD_COMPRESSION_NONE)
{
TIFFErrorExtR(tif, module, "Unhandled additional compression");
return 0;
}
lerc_ret =
lerc_getBlobInfo(lerc_data, lerc_data_size, infoArray, NULL, 8, 0);
if (lerc_ret != 0)
{
TIFFErrorExtR(tif, module, "lerc_getBlobInfo() failed");
return 0;
}
/* If the configuration is compatible of a LERC mask, and that the */
/* LERC info has dim == samplesperpixel - 1, then there is a LERC */
/* mask. */
if (td->td_planarconfig == PLANARCONFIG_CONTIG && td->td_extrasamples > 0 &&
td->td_sampleinfo[td->td_extrasamples - 1] == EXTRASAMPLE_UNASSALPHA &&
GetLercDataType(tif) == 1 &&
infoArray[2] == td->td_samplesperpixel - 1U)
{
use_mask = 1;
nomask_bands--;
}
else if (td->td_sampleformat == SAMPLEFORMAT_IEEEFP &&
(td->td_planarconfig == PLANARCONFIG_SEPARATE ||
td->td_samplesperpixel == 1) &&
(td->td_bitspersample == 32 || td->td_bitspersample == 64))
{
use_mask = 1;
}
ndims = td->td_planarconfig == PLANARCONFIG_CONTIG ? nomask_bands : 1;
/* Info returned in infoArray is { version, dataType, nDim, nCols,
nRows, nBands, nValidPixels, blobSize } */
if (infoArray[0] != (unsigned)sp->lerc_version)
{
TIFFWarningExtR(tif, module,
"Unexpected version number: %d. Expected: %d",
infoArray[0], sp->lerc_version);
}
if (infoArray[1] != (unsigned)lerc_data_type)
{
TIFFErrorExtR(tif, module, "Unexpected dataType: %d. Expected: %d",
infoArray[1], lerc_data_type);
return 0;
}
if (infoArray[2] != (unsigned)ndims)
{
TIFFErrorExtR(tif, module, "Unexpected nDim: %d. Expected: %d",
infoArray[2], ndims);
return 0;
}
if (infoArray[3] != sp->segment_width)
{
TIFFErrorExtR(tif, module, "Unexpected nCols: %d. Expected: %du",
infoArray[3], sp->segment_width);
return 0;
}
if (infoArray[4] != sp->segment_height)
{
TIFFErrorExtR(tif, module, "Unexpected nRows: %d. Expected: %u",
infoArray[4], sp->segment_height);
return 0;
}
if (infoArray[5] != 1)
{
TIFFErrorExtR(tif, module, "Unexpected nBands: %d. Expected: %d",
infoArray[5], 1);
return 0;
}
if (infoArray[7] != lerc_data_size)
{
TIFFErrorExtR(tif, module, "Unexpected blobSize: %d. Expected: %u",
infoArray[7], lerc_data_size);
return 0;
}
lerc_ret = lerc_decode(lerc_data, lerc_data_size,
#if LERC_AT_LEAST_VERSION(3, 0, 0)
use_mask ? 1 : 0,
#endif
use_mask ? sp->mask_buffer : NULL, ndims,
sp->segment_width, sp->segment_height, 1,
lerc_data_type, sp->uncompressed_buffer);
if (lerc_ret != 0)
{
TIFFErrorExtR(tif, module, "lerc_decode() failed");
return 0;
}
/* Interleave alpha mask with other samples. */
if (use_mask && GetLercDataType(tif) == 1)
{
unsigned src_stride =
(td->td_samplesperpixel - 1) * (td->td_bitspersample / 8);
unsigned dst_stride =
td->td_samplesperpixel * (td->td_bitspersample / 8);
unsigned i = sp->segment_width * sp->segment_height;
/* Operate from end to begin to be able to move in place */
while (i > 0 && i > nomask_bands)
{
i--;
sp->uncompressed_buffer[i * dst_stride + td->td_samplesperpixel -
1] = 255 * sp->mask_buffer[i];
memcpy(sp->uncompressed_buffer + i * dst_stride,
sp->uncompressed_buffer + i * src_stride, src_stride);
}
/* First pixels must use memmove due to overlapping areas */
while (i > 0)
{
i--;
sp->uncompressed_buffer[i * dst_stride + td->td_samplesperpixel -
1] = 255 * sp->mask_buffer[i];
memmove(sp->uncompressed_buffer + i * dst_stride,
sp->uncompressed_buffer + i * src_stride, src_stride);
}
}
else if (use_mask && td->td_sampleformat == SAMPLEFORMAT_IEEEFP)
{
const unsigned nb_pixels = sp->segment_width * sp->segment_height;
unsigned i;
#if WORDS_BIGENDIAN
const unsigned char nan_bytes[] = {0x7f, 0xc0, 0, 0};
#else
const unsigned char nan_bytes[] = {0, 0, 0xc0, 0x7f};
#endif
float nan_float32;
memcpy(&nan_float32, nan_bytes, 4);
if (td->td_bitspersample == 32)
{
for (i = 0; i < nb_pixels; i++)
{
if (sp->mask_buffer[i] == 0)
((float *)sp->uncompressed_buffer)[i] = nan_float32;
}
}
else
{
const double nan_float64 = nan_float32;
for (i = 0; i < nb_pixels; i++)
{
if (sp->mask_buffer[i] == 0)
((double *)sp->uncompressed_buffer)[i] = nan_float64;
}
}
}
return 1;
}
/*
* Decode a strip, tile or scanline.
*/
static int LERCDecode(TIFF *tif, uint8_t *op, tmsize_t occ, uint16_t s)
{
static const char module[] = "LERCDecode";
LERCState *sp = DecoderState(tif);
(void)s;
assert(sp != NULL);
assert(sp->state == LSTATE_INIT_DECODE);
if (sp->uncompressed_buffer == 0)
{
TIFFErrorExtR(tif, module, "Uncompressed buffer not allocated");
return 0;
}
if ((uint64_t)sp->uncompressed_offset + (uint64_t)occ >
sp->uncompressed_size)
{
TIFFErrorExtR(tif, module, "Too many bytes read");
return 0;
}
memcpy(op, sp->uncompressed_buffer + sp->uncompressed_offset, occ);
sp->uncompressed_offset += (unsigned)occ;
return 1;
}
static int LERCSetupEncode(TIFF *tif)
{
LERCState *sp = EncoderState(tif);
assert(sp != NULL);
if (sp->state & LSTATE_INIT_DECODE)
{
sp->state = 0;
}
sp->state |= LSTATE_INIT_ENCODE;
return 1;
}
/*
* Reset encoding state at the start of a strip.
*/
static int LERCPreEncode(TIFF *tif, uint16_t s)
{
static const char module[] = "LERCPreEncode";
LERCState *sp = EncoderState(tif);
int lerc_data_type;
(void)s;
assert(sp != NULL);
if (sp->state != LSTATE_INIT_ENCODE)
tif->tif_setupencode(tif);
lerc_data_type = GetLercDataType(tif);
if (lerc_data_type < 0)
return 0;
if (!SetupUncompressedBuffer(tif, sp, module))
return 0;
return 1;
}
/*
* Encode a chunk of pixels.
*/
static int LERCEncode(TIFF *tif, uint8_t *bp, tmsize_t cc, uint16_t s)
{
static const char module[] = "LERCEncode";
LERCState *sp = EncoderState(tif);
(void)s;
assert(sp != NULL);
assert(sp->state == LSTATE_INIT_ENCODE);
if ((uint64_t)sp->uncompressed_offset + (uint64_t)cc >
sp->uncompressed_size)
{
TIFFErrorExtR(tif, module, "Too many bytes written");
return 0;
}
memcpy(sp->uncompressed_buffer + sp->uncompressed_offset, bp, cc);
sp->uncompressed_offset += (unsigned)cc;
return 1;
}
/*
* Finish off an encoded strip by flushing it.
*/
static int LERCPostEncode(TIFF *tif)
{
lerc_status lerc_ret;
static const char module[] = "LERCPostEncode";
LERCState *sp = EncoderState(tif);
unsigned int numBytes = 0;
unsigned int numBytesWritten = 0;
TIFFDirectory *td = &tif->tif_dir;
int use_mask = 0;
unsigned dst_nbands = td->td_samplesperpixel;
if (sp->uncompressed_offset != sp->uncompressed_size)
{
TIFFErrorExtR(tif, module, "Unexpected number of bytes in the buffer");
return 0;
}
/* Extract alpha mask (if containing only 0 and 255 values, */
/* and compact array of regular bands */
if (td->td_planarconfig == PLANARCONFIG_CONTIG && td->td_extrasamples > 0 &&
td->td_sampleinfo[td->td_extrasamples - 1] == EXTRASAMPLE_UNASSALPHA &&
GetLercDataType(tif) == 1)
{
const unsigned dst_stride =
(td->td_samplesperpixel - 1) * (td->td_bitspersample / 8);
const unsigned src_stride =
td->td_samplesperpixel * (td->td_bitspersample / 8);
unsigned i = 0;
const unsigned nb_pixels = sp->segment_width * sp->segment_height;
use_mask = 1;
for (i = 0; i < nb_pixels; i++)
{
int v = sp->uncompressed_buffer[i * src_stride +
td->td_samplesperpixel - 1];
if (v != 0 && v != 255)
{
use_mask = 0;
break;
}
}
if (use_mask)
{
dst_nbands--;
/* First pixels must use memmove due to overlapping areas */
for (i = 0; i < dst_nbands && i < nb_pixels; i++)
{
memmove(sp->uncompressed_buffer + i * dst_stride,
sp->uncompressed_buffer + i * src_stride, dst_stride);
sp->mask_buffer[i] =
sp->uncompressed_buffer[i * src_stride +
td->td_samplesperpixel - 1];
}
for (; i < nb_pixels; i++)
{
memcpy(sp->uncompressed_buffer + i * dst_stride,
sp->uncompressed_buffer + i * src_stride, dst_stride);
sp->mask_buffer[i] =
sp->uncompressed_buffer[i * src_stride +
td->td_samplesperpixel - 1];
}
}
}
else if (td->td_sampleformat == SAMPLEFORMAT_IEEEFP &&
(td->td_planarconfig == PLANARCONFIG_SEPARATE ||
dst_nbands == 1) &&
(td->td_bitspersample == 32 || td->td_bitspersample == 64))
{
/* Check for NaN values */
unsigned i;
const unsigned nb_pixels = sp->segment_width * sp->segment_height;
if (td->td_bitspersample == 32)
{
for (i = 0; i < nb_pixels; i++)
{
const float val = ((float *)sp->uncompressed_buffer)[i];
if (val != val)
{
use_mask = 1;
break;
}
}
}
else
{
for (i = 0; i < nb_pixels; i++)
{
const double val = ((double *)sp->uncompressed_buffer)[i];
if (val != val)
{
use_mask = 1;
break;
}
}
}
if (use_mask)
{
if (td->td_bitspersample == 32)
{
for (i = 0; i < nb_pixels; i++)
{
const float val = ((float *)sp->uncompressed_buffer)[i];
sp->mask_buffer[i] = (val == val) ? 255 : 0;
}
}
else
{
for (i = 0; i < nb_pixels; i++)
{
const double val = ((double *)sp->uncompressed_buffer)[i];
sp->mask_buffer[i] = (val == val) ? 255 : 0;
}
}
}
}
#if 0
lerc_ret = lerc_computeCompressedSize(
sp->uncompressed_buffer,
sp->lerc_version,
GetLercDataType(tif),
td->td_planarconfig == PLANARCONFIG_CONTIG ?
dst_nbands : 1,
sp->segment_width,
sp->segment_height,
1,
use_mask ? sp->mask_buffer : NULL,
sp->maxzerror,
&numBytes);
if( lerc_ret != 0 )
{
TIFFErrorExtR(tif, module,
"lerc_computeCompressedSize() failed");
return 0;
}
#else
numBytes = sp->uncompressed_alloc;
#endif
if (sp->compressed_size < numBytes)
{
_TIFFfreeExt(tif, sp->compressed_buffer);
sp->compressed_buffer = _TIFFmallocExt(tif, numBytes);
if (!sp->compressed_buffer)
{
sp->compressed_size = 0;
return 0;
}
sp->compressed_size = numBytes;
}
lerc_ret = lerc_encodeForVersion(
sp->uncompressed_buffer, sp->lerc_version, GetLercDataType(tif),
td->td_planarconfig == PLANARCONFIG_CONTIG ? dst_nbands : 1,
sp->segment_width, sp->segment_height, 1,
#if LERC_AT_LEAST_VERSION(3, 0, 0)
use_mask ? 1 : 0,
#endif
use_mask ? sp->mask_buffer : NULL, sp->maxzerror, sp->compressed_buffer,
sp->compressed_size, &numBytesWritten);
if (lerc_ret != 0)
{
TIFFErrorExtR(tif, module, "lerc_encode() failed");
return 0;
}
assert(numBytesWritten < numBytes);
if (sp->additional_compression == LERC_ADD_COMPRESSION_DEFLATE)
{
#if LIBDEFLATE_SUPPORT
if (sp->libdeflate_enc == NULL)
{
/* To get results as good as zlib, we ask for an extra */
/* level of compression */
sp->libdeflate_enc = libdeflate_alloc_compressor(
sp->zipquality == Z_DEFAULT_COMPRESSION ? 7
: sp->zipquality >= 6 && sp->zipquality <= 9
? sp->zipquality + 1
: sp->zipquality);
if (sp->libdeflate_enc == NULL)
{
TIFFErrorExtR(tif, module, "Cannot allocate compressor");
return 0;
}
}
/* Should not happen normally */
if (libdeflate_zlib_compress_bound(
sp->libdeflate_enc, numBytesWritten) > sp->uncompressed_alloc)
{
TIFFErrorExtR(tif, module,
"Output buffer for libdeflate too small");
return 0;
}
tif->tif_rawcc = libdeflate_zlib_compress(
sp->libdeflate_enc, sp->compressed_buffer, numBytesWritten,
sp->uncompressed_buffer, sp->uncompressed_alloc);
if (tif->tif_rawcc == 0)
{
TIFFErrorExtR(tif, module, "Encoder error at scanline %lu",
(unsigned long)tif->tif_row);
return 0;
}
#else
z_stream strm;
int zlib_ret;
int cappedQuality = sp->zipquality;
if (cappedQuality > Z_BEST_COMPRESSION)
cappedQuality = Z_BEST_COMPRESSION;
memset(&strm, 0, sizeof(strm));
strm.zalloc = NULL;
strm.zfree = NULL;
strm.opaque = NULL;
zlib_ret = deflateInit(&strm, cappedQuality);
if (zlib_ret != Z_OK)
{
TIFFErrorExtR(tif, module, "deflateInit() failed");
return 0;
}
strm.avail_in = numBytesWritten;
strm.next_in = sp->compressed_buffer;
strm.avail_out = sp->uncompressed_alloc;
strm.next_out = sp->uncompressed_buffer;
zlib_ret = deflate(&strm, Z_FINISH);
if (zlib_ret == Z_STREAM_END)
{
tif->tif_rawcc = sp->uncompressed_alloc - strm.avail_out;
}
deflateEnd(&strm);
if (zlib_ret != Z_STREAM_END)
{
TIFFErrorExtR(tif, module, "deflate() failed");
return 0;
}
#endif
{
int ret;
uint8_t *tif_rawdata_backup = tif->tif_rawdata;
tif->tif_rawdata = sp->uncompressed_buffer;
ret = TIFFFlushData1(tif);
tif->tif_rawdata = tif_rawdata_backup;
if (!ret)
{
return 0;
}
}
}
else if (sp->additional_compression == LERC_ADD_COMPRESSION_ZSTD)
{
#ifdef ZSTD_SUPPORT
size_t zstd_ret = ZSTD_compress(
sp->uncompressed_buffer, sp->uncompressed_alloc,
sp->compressed_buffer, numBytesWritten, sp->zstd_compress_level);
if (ZSTD_isError(zstd_ret))
{
TIFFErrorExtR(tif, module, "Error in ZSTD_compress(): %s",
ZSTD_getErrorName(zstd_ret));
return 0;
}
{
int ret;
uint8_t *tif_rawdata_backup = tif->tif_rawdata;
tif->tif_rawdata = sp->uncompressed_buffer;
tif->tif_rawcc = zstd_ret;
ret = TIFFFlushData1(tif);
tif->tif_rawdata = tif_rawdata_backup;
if (!ret)
{
return 0;
}
}
#else
TIFFErrorExtR(tif, module, "ZSTD support missing");
return 0;
#endif
}
else if (sp->additional_compression != LERC_ADD_COMPRESSION_NONE)
{
TIFFErrorExtR(tif, module, "Unhandled additional compression");
return 0;
}
else
{
int ret;
uint8_t *tif_rawdata_backup = tif->tif_rawdata;
tif->tif_rawdata = sp->compressed_buffer;
tif->tif_rawcc = numBytesWritten;
ret = TIFFFlushData1(tif);
tif->tif_rawdata = tif_rawdata_backup;
if (!ret)
return 0;
}
return 1;
}
static void LERCCleanup(TIFF *tif)
{
LERCState *sp = LState(tif);
assert(sp != 0);
tif->tif_tagmethods.vgetfield = sp->vgetparent;
tif->tif_tagmethods.vsetfield = sp->vsetparent;
_TIFFfreeExt(tif, sp->uncompressed_buffer);
_TIFFfreeExt(tif, sp->compressed_buffer);
_TIFFfreeExt(tif, sp->mask_buffer);
#if LIBDEFLATE_SUPPORT
if (sp->libdeflate_dec)
libdeflate_free_decompressor(sp->libdeflate_dec);
if (sp->libdeflate_enc)
libdeflate_free_compressor(sp->libdeflate_enc);
#endif
_TIFFfreeExt(tif, sp);
tif->tif_data = NULL;
_TIFFSetDefaultCompressionState(tif);
}
static const TIFFField LERCFields[] = {
{TIFFTAG_LERC_PARAMETERS, TIFF_VARIABLE2, TIFF_VARIABLE2, TIFF_LONG, 0,
TIFF_SETGET_C32_UINT32, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, FALSE, TRUE,
"LercParameters", NULL},
{TIFFTAG_LERC_MAXZERROR, 0, 0, TIFF_ANY, 0, TIFF_SETGET_DOUBLE,
TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "LercMaximumError",
NULL},
{TIFFTAG_LERC_VERSION, 0, 0, TIFF_ANY, 0, TIFF_SETGET_UINT32,
TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, FALSE, FALSE, "LercVersion", NULL},
{TIFFTAG_LERC_ADD_COMPRESSION, 0, 0, TIFF_ANY, 0, TIFF_SETGET_UINT32,
TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, FALSE, FALSE,
"LercAdditionalCompression", NULL},
{TIFFTAG_ZSTD_LEVEL, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT,
TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE,
"ZSTD zstd_compress_level", NULL},
{TIFFTAG_ZIPQUALITY, 0, 0, TIFF_ANY, 0, TIFF_SETGET_INT,
TIFF_SETGET_UNDEFINED, FIELD_PSEUDO, TRUE, FALSE, "", NULL},
};
static int LERCVSetFieldBase(TIFF *tif, uint32_t tag, ...)
{
LERCState *sp = LState(tif);
int ret;
va_list ap;
va_start(ap, tag);
ret = (*sp->vsetparent)(tif, tag, ap);
va_end(ap);
return ret;
}
static int LERCVSetField(TIFF *tif, uint32_t tag, va_list ap)
{
static const char module[] = "LERCVSetField";
LERCState *sp = LState(tif);
switch (tag)
{
case TIFFTAG_LERC_PARAMETERS:
{
uint32_t count = va_arg(ap, int);
int *params = va_arg(ap, int *);
if (count < 2)
{
TIFFErrorExtR(tif, module,
"Invalid count for LercParameters: %u", count);
return 0;
}
sp->lerc_version = params[0];
sp->additional_compression = params[1];
return LERCVSetFieldBase(tif, TIFFTAG_LERC_PARAMETERS, count,
params);
}
case TIFFTAG_LERC_MAXZERROR:
sp->maxzerror = va_arg(ap, double);
return 1;
case TIFFTAG_LERC_VERSION:
{
int params[2] = {0, 0};
int version = va_arg(ap, int);
if (version != LERC_VERSION_2_4)
{
TIFFErrorExtR(tif, module, "Invalid value for LercVersion: %d",
version);
return 0;
}
sp->lerc_version = version;
params[0] = sp->lerc_version;
params[1] = sp->additional_compression;
return LERCVSetFieldBase(tif, TIFFTAG_LERC_PARAMETERS, 2, params);
}
case TIFFTAG_LERC_ADD_COMPRESSION:
{
int params[2] = {0, 0};
int additional_compression = va_arg(ap, int);
#ifndef ZSTD_SUPPORT
if (additional_compression == LERC_ADD_COMPRESSION_ZSTD)
{
TIFFErrorExtR(tif, module,
"LERC_ZSTD requested, but ZSTD not available");
return 0;
}
#endif
if (additional_compression != LERC_ADD_COMPRESSION_NONE &&
additional_compression != LERC_ADD_COMPRESSION_DEFLATE &&
additional_compression != LERC_ADD_COMPRESSION_ZSTD)
{
TIFFErrorExtR(tif, module,
"Invalid value for LercAdditionalCompression: %d",
additional_compression);
return 0;
}
sp->additional_compression = additional_compression;
params[0] = sp->lerc_version;
params[1] = sp->additional_compression;
return LERCVSetFieldBase(tif, TIFFTAG_LERC_PARAMETERS, 2, params);
}
#ifdef ZSTD_SUPPORT
case TIFFTAG_ZSTD_LEVEL:
{
sp->zstd_compress_level = (int)va_arg(ap, int);
if (sp->zstd_compress_level <= 0 ||
sp->zstd_compress_level > ZSTD_maxCLevel())
{
TIFFWarningExtR(tif, module,
"ZSTD_LEVEL should be between 1 and %d",
ZSTD_maxCLevel());
}
return 1;
}
#endif
case TIFFTAG_ZIPQUALITY:
{
sp->zipquality = (int)va_arg(ap, int);
if (sp->zipquality < Z_DEFAULT_COMPRESSION ||
sp->zipquality > LIBDEFLATE_MAX_COMPRESSION_LEVEL)
{
TIFFErrorExtR(
tif, module,
"Invalid ZipQuality value. Should be in [-1,%d] range",
LIBDEFLATE_MAX_COMPRESSION_LEVEL);
return 0;
}
#if LIBDEFLATE_SUPPORT
if (sp->libdeflate_enc)
{
libdeflate_free_compressor(sp->libdeflate_enc);
sp->libdeflate_enc = NULL;
}
#endif
return (1);
}
default:
return (*sp->vsetparent)(tif, tag, ap);
}
/*NOTREACHED*/
}
static int LERCVGetField(TIFF *tif, uint32_t tag, va_list ap)
{
LERCState *sp = LState(tif);
switch (tag)
{
case TIFFTAG_LERC_MAXZERROR:
*va_arg(ap, double *) = sp->maxzerror;
break;
case TIFFTAG_LERC_VERSION:
*va_arg(ap, int *) = sp->lerc_version;
break;
case TIFFTAG_LERC_ADD_COMPRESSION:
*va_arg(ap, int *) = sp->additional_compression;
break;
case TIFFTAG_ZSTD_LEVEL:
*va_arg(ap, int *) = sp->zstd_compress_level;
break;
case TIFFTAG_ZIPQUALITY:
*va_arg(ap, int *) = sp->zipquality;
break;
default:
return (*sp->vgetparent)(tif, tag, ap);
}
return 1;
}
int TIFFInitLERC(TIFF *tif, int scheme)
{
static const char module[] = "TIFFInitLERC";
LERCState *sp;
(void)scheme;
assert(scheme == COMPRESSION_LERC);
/*
* Merge codec-specific tag information.
*/
if (!_TIFFMergeFields(tif, LERCFields, TIFFArrayCount(LERCFields)))
{
TIFFErrorExtR(tif, module, "Merging LERC codec-specific tags failed");
return 0;
}
/*
* Allocate state block so tag methods have storage to record values.
*/
tif->tif_data = (uint8_t *)_TIFFcallocExt(tif, 1, sizeof(LERCState));
if (tif->tif_data == NULL)
goto bad;
sp = LState(tif);
/*
* Override parent get/set field methods.
*/
sp->vgetparent = tif->tif_tagmethods.vgetfield;
tif->tif_tagmethods.vgetfield = LERCVGetField; /* hook for codec tags */
sp->vsetparent = tif->tif_tagmethods.vsetfield;
tif->tif_tagmethods.vsetfield = LERCVSetField; /* hook for codec tags */
/*
* Install codec methods.
*/
tif->tif_fixuptags = LERCFixupTags;
tif->tif_setupdecode = LERCSetupDecode;
tif->tif_predecode = LERCPreDecode;
tif->tif_decoderow = LERCDecode;
tif->tif_decodestrip = LERCDecode;
tif->tif_decodetile = LERCDecode;
tif->tif_setupencode = LERCSetupEncode;
tif->tif_preencode = LERCPreEncode;
tif->tif_postencode = LERCPostEncode;
tif->tif_encoderow = LERCEncode;
tif->tif_encodestrip = LERCEncode;
tif->tif_encodetile = LERCEncode;
tif->tif_cleanup = LERCCleanup;
/* Default values for codec-specific fields */
TIFFSetField(tif, TIFFTAG_LERC_VERSION, LERC_VERSION_2_4);
TIFFSetField(tif, TIFFTAG_LERC_ADD_COMPRESSION, LERC_ADD_COMPRESSION_NONE);
sp->maxzerror = 0.0;
sp->zstd_compress_level = 9; /* default comp. level */
sp->zipquality = Z_DEFAULT_COMPRESSION; /* default comp. level */
sp->state = 0;
return 1;
bad:
TIFFErrorExtR(tif, module, "No space for LERC state block");
return 0;
}
#endif /* LERC_SUPPORT */
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