diff options
Diffstat (limited to 'plugins/AdvaImg/src/LibJPEG/jcmaster.c')
| -rw-r--r-- | plugins/AdvaImg/src/LibJPEG/jcmaster.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/plugins/AdvaImg/src/LibJPEG/jcmaster.c b/plugins/AdvaImg/src/LibJPEG/jcmaster.c index ef73194b8b..431744ebe1 100644 --- a/plugins/AdvaImg/src/LibJPEG/jcmaster.c +++ b/plugins/AdvaImg/src/LibJPEG/jcmaster.c @@ -2,7 +2,7 @@ * jcmaster.c
*
* Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2003-2011 by Guido Vollbeding.
+ * Modified 2003-2013 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@@ -222,8 +222,6 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only) {
int ci, ssize;
jpeg_component_info *compptr;
- long samplesperrow;
- JDIMENSION jd_samplesperrow;
if (transcode_only)
jpeg_calc_trans_dimensions(cinfo);
@@ -251,7 +249,7 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only) /* Sanity check on image dimensions */
if (cinfo->jpeg_height <= 0 || cinfo->jpeg_width <= 0 ||
- cinfo->num_components <= 0 || cinfo->input_components <= 0)
+ cinfo->num_components <= 0)
ERREXIT(cinfo, JERR_EMPTY_IMAGE);
/* Make sure image isn't bigger than I can handle */
@@ -259,14 +257,8 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only) (long) cinfo->jpeg_width > (long) JPEG_MAX_DIMENSION)
ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
- /* Width of an input scanline must be representable as JDIMENSION. */
- samplesperrow = (long) cinfo->image_width * (long) cinfo->input_components;
- jd_samplesperrow = (JDIMENSION) samplesperrow;
- if ((long) jd_samplesperrow != samplesperrow)
- ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
-
- /* For now, precision must match compiled-in value... */
- if (cinfo->data_precision != BITS_IN_JSAMPLE)
+ /* Only 8 to 12 bits data precision are supported for DCT based JPEG */
+ if (cinfo->data_precision < 8 || cinfo->data_precision > 12)
ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
/* Check that number of components won't exceed internal array sizes */
@@ -339,8 +331,10 @@ initial_setup (j_compress_ptr cinfo, boolean transcode_only) jdiv_round_up((long) cinfo->jpeg_height *
(long) (compptr->v_samp_factor * compptr->DCT_v_scaled_size),
(long) (cinfo->max_v_samp_factor * cinfo->block_size));
- /* Mark component needed (this flag isn't actually used for compression) */
- compptr->component_needed = TRUE;
+ /* Don't need quantization scale after DCT,
+ * until color conversion says otherwise.
+ */
+ compptr->component_needed = FALSE;
}
/* Compute number of fully interleaved MCU rows (number of times that
@@ -811,7 +805,7 @@ jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only) master = (my_master_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_comp_master));
- cinfo->master = (struct jpeg_comp_master *) master;
+ cinfo->master = &master->pub;
master->pub.prepare_for_pass = prepare_for_pass;
master->pub.pass_startup = pass_startup;
master->pub.finish_pass = finish_pass_master;
@@ -833,10 +827,14 @@ jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only) cinfo->num_scans = 1;
}
- if ((cinfo->progressive_mode || cinfo->block_size < DCTSIZE) &&
- !cinfo->arith_code) /* TEMPORARY HACK ??? */
- /* assume default tables no good for progressive or downscale mode */
- cinfo->optimize_coding = TRUE;
+ if (cinfo->optimize_coding)
+ cinfo->arith_code = FALSE; /* disable arithmetic coding */
+ else if (! cinfo->arith_code &&
+ (cinfo->progressive_mode ||
+ (cinfo->block_size > 1 && cinfo->block_size < DCTSIZE)))
+ /* TEMPORARY HACK ??? */
+ /* assume default tables no good for progressive or reduced AC mode */
+ cinfo->optimize_coding = TRUE; /* force Huffman optimization */
/* Initialize my private state */
if (transcode_only) {
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