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libtiff/tif_jpeg.c: Fix regression introduced on 2010-05-07 that caused all tiles/strips to include quantization tables even when the jpegtablesmode had the JPEGTABLESMODE_QUANT bit set. Also add explicit removal of Huffman tables when jpegtablesmode has the JPEGTABLESMODE_HUFF bit set, which avoids Huffman tables to be emitted in the first tile/strip (only useful in update scenarios. create-only was fine)

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This commit is contained in:
Even Rouault 2014-12-15 15:40:06 +00:00
parent 570fd679f6
commit 59d4cb0b11
2 changed files with 49 additions and 3 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
2014-12-15 Even Rouault <even.rouault@spatialys.com>
* libtiff/tif_jpeg.c: Fix regression introduced on 2010-05-07 that caused
all tiles/strips to include quantization tables even when the jpegtablesmode
had the JPEGTABLESMODE_QUANT bit set.
Also add explicit removal of Huffman tables when jpegtablesmode has the
JPEGTABLESMODE_HUFF bit set, which avoids Huffman tables to be emitted in the
first tile/strip (only useful in update scenarios. create-only was
fine)
2014-12-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
* tools/tiff2pdf.c: Assure that memory size calculations for

40
libtiff/tif_jpeg.c
View File

@ -1,4 +1,4 @@
/* $Id: tif_jpeg.c,v 1.112 2014-11-20 14:34:51 erouault Exp $ */
/* $Id: tif_jpeg.c,v 1.113 2014-12-15 15:40:07 erouault Exp $ */
/*
* Copyright (c) 1994-1997 Sam Leffler
@ -1451,6 +1451,15 @@ unsuppress_quant_table (JPEGState* sp, int tblno)
qtbl->sent_table = FALSE;
}
static void
suppress_quant_table (JPEGState* sp, int tblno)
{
JQUANT_TBL* qtbl;
if ((qtbl = sp->cinfo.c.quant_tbl_ptrs[tblno]) != NULL)
qtbl->sent_table = TRUE;
}
static void
unsuppress_huff_table (JPEGState* sp, int tblno)
{
@ -1462,6 +1471,17 @@ unsuppress_huff_table (JPEGState* sp, int tblno)
htbl->sent_table = FALSE;
}
static void
suppress_huff_table (JPEGState* sp, int tblno)
{
JHUFF_TBL* htbl;
if ((htbl = sp->cinfo.c.dc_huff_tbl_ptrs[tblno]) != NULL)
htbl->sent_table = TRUE;
if ((htbl = sp->cinfo.c.ac_huff_tbl_ptrs[tblno]) != NULL)
htbl->sent_table = TRUE;
}
static int
prepare_JPEGTables(TIFF* tif)
{
@ -1726,14 +1746,30 @@ JPEGPreEncode(TIFF* tif, uint16 s)
sp->cinfo.c.write_JFIF_header = FALSE;
sp->cinfo.c.write_Adobe_marker = FALSE;
/* set up table handling correctly */
/* calling TIFFjpeg_set_quality() causes quantization tables to be flagged */
/* as being to be emitted, which we don't want in the JPEGTABLESMODE_QUANT */
/* mode, so we must manually suppress them. However TIFFjpeg_set_quality() */
/* should really be called when dealing with files with directories with */
/* mixed qualities. see http://trac.osgeo.org/gdal/ticket/3539 */
if (!TIFFjpeg_set_quality(sp, sp->jpegquality, FALSE))
return (0);
if (! (sp->jpegtablesmode & JPEGTABLESMODE_QUANT)) {
if (sp->jpegtablesmode & JPEGTABLESMODE_QUANT) {
suppress_quant_table(sp, 0);
suppress_quant_table(sp, 1);
}
else {
unsuppress_quant_table(sp, 0);
unsuppress_quant_table(sp, 1);
}
if (sp->jpegtablesmode & JPEGTABLESMODE_HUFF)
{
/* Explicit suppression is only needed if we did not go through the */
/* prepare_JPEGTables() code path, which may be the case if updating */
/* an existing file */
suppress_huff_table(sp, 0);
suppress_huff_table(sp, 1);
sp->cinfo.c.optimize_coding = FALSE;
}
else
sp->cinfo.c.optimize_coding = TRUE;
if (downsampled_input) {