* Copyright (C) 1991-1997, Thomas G. Lane.
* Modified 2003-2010 by Guido Vollbeding.
* libjpeg-turbo Modifications:
- * Copyright (C) 2010, D. R. Commander.
- * For conditions of distribution and use, see the accompanying README file.
+ * Copyright (C) 2010, 2016, 2018, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
*
* This file contains master control logic for the JPEG compressor.
* These routines are concerned with parameter validation, initial setup,
#include "jinclude.h"
#include "jpeglib.h"
#include "jpegcomp.h"
+#include "jconfigint.h"
/* Private state */
typedef enum {
- main_pass, /* input data, also do first output step */
- huff_opt_pass, /* Huffman code optimization pass */
- output_pass /* data output pass */
+ main_pass, /* input data, also do first output step */
+ huff_opt_pass, /* Huffman code optimization pass */
+ output_pass /* data output pass */
} c_pass_type;
typedef struct {
int total_passes; /* total # of passes needed */
int scan_number; /* current index in scan_info[] */
+
+ /*
+ * This is here so we can add libjpeg-turbo version/build information to the
+ * global string table without introducing a new global symbol. Adding this
+ * information to the global string table allows one to examine a binary
+ * object and determine which version of libjpeg-turbo it was built from or
+ * linked against.
+ */
+ const char *jpeg_version;
+
} my_comp_master;
-typedef my_comp_master * my_master_ptr;
+typedef my_comp_master *my_master_ptr;
/*
*/
GLOBAL(void)
-jpeg_calc_jpeg_dimensions (j_compress_ptr cinfo)
+jpeg_calc_jpeg_dimensions(j_compress_ptr cinfo)
/* Do computations that are needed before master selection phase */
{
/* Hardwire it to "no scaling" */
LOCAL(void)
-initial_setup (j_compress_ptr cinfo, boolean transcode_only)
+initial_setup(j_compress_ptr cinfo, boolean transcode_only)
/* Do computations that are needed before master selection phase */
{
int ci;
#endif
/* Sanity check on image dimensions */
- if (cinfo->_jpeg_height <= 0 || cinfo->_jpeg_width <= 0
- || cinfo->num_components <= 0 || cinfo->input_components <= 0)
+ if (cinfo->_jpeg_height <= 0 || cinfo->_jpeg_width <= 0 ||
+ cinfo->num_components <= 0 || cinfo->input_components <= 0)
ERREXIT(cinfo, JERR_EMPTY_IMAGE);
/* Make sure image isn't bigger than I can handle */
- if ((long) cinfo->_jpeg_height > (long) JPEG_MAX_DIMENSION ||
- (long) cinfo->_jpeg_width > (long) JPEG_MAX_DIMENSION)
- ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
+ if ((long)cinfo->_jpeg_height > (long)JPEG_MAX_DIMENSION ||
+ (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)
+ 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... */
cinfo->max_v_samp_factor = 1;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
- if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||
- compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
+ if (compptr->h_samp_factor <= 0 ||
+ compptr->h_samp_factor > MAX_SAMP_FACTOR ||
+ compptr->v_samp_factor <= 0 ||
+ compptr->v_samp_factor > MAX_SAMP_FACTOR)
ERREXIT(cinfo, JERR_BAD_SAMPLING);
cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,
compptr->h_samp_factor);
#endif
/* Size in DCT blocks */
compptr->width_in_blocks = (JDIMENSION)
- jdiv_round_up((long) cinfo->_jpeg_width * (long) compptr->h_samp_factor,
- (long) (cinfo->max_h_samp_factor * DCTSIZE));
+ jdiv_round_up((long)cinfo->_jpeg_width * (long)compptr->h_samp_factor,
+ (long)(cinfo->max_h_samp_factor * DCTSIZE));
compptr->height_in_blocks = (JDIMENSION)
- jdiv_round_up((long) cinfo->_jpeg_height * (long) compptr->v_samp_factor,
- (long) (cinfo->max_v_samp_factor * DCTSIZE));
+ jdiv_round_up((long)cinfo->_jpeg_height * (long)compptr->v_samp_factor,
+ (long)(cinfo->max_v_samp_factor * DCTSIZE));
/* Size in samples */
compptr->downsampled_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->_jpeg_width * (long) compptr->h_samp_factor,
- (long) cinfo->max_h_samp_factor);
+ jdiv_round_up((long)cinfo->_jpeg_width * (long)compptr->h_samp_factor,
+ (long)cinfo->max_h_samp_factor);
compptr->downsampled_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->_jpeg_height * (long) compptr->v_samp_factor,
- (long) cinfo->max_v_samp_factor);
+ jdiv_round_up((long)cinfo->_jpeg_height * (long)compptr->v_samp_factor,
+ (long)cinfo->max_v_samp_factor);
/* Mark component needed (this flag isn't actually used for compression) */
compptr->component_needed = TRUE;
}
* main controller will call coefficient controller).
*/
cinfo->total_iMCU_rows = (JDIMENSION)
- jdiv_round_up((long) cinfo->_jpeg_height,
- (long) (cinfo->max_v_samp_factor*DCTSIZE));
+ jdiv_round_up((long)cinfo->_jpeg_height,
+ (long)(cinfo->max_v_samp_factor * DCTSIZE));
}
#ifdef C_MULTISCAN_FILES_SUPPORTED
LOCAL(void)
-validate_script (j_compress_ptr cinfo)
+validate_script(j_compress_ptr cinfo)
/* Verify that the scan script in cinfo->scan_info[] is valid; also
* determine whether it uses progressive JPEG, and set cinfo->progressive_mode.
*/
{
- const jpeg_scan_info * scanptr;
+ const jpeg_scan_info *scanptr;
int scanno, ncomps, ci, coefi, thisi;
int Ss, Se, Ah, Al;
boolean component_sent[MAX_COMPONENTS];
#ifdef C_PROGRESSIVE_SUPPORTED
- int * last_bitpos_ptr;
+ int *last_bitpos_ptr;
int last_bitpos[MAX_COMPONENTS][DCTSIZE2];
/* -1 until that coefficient has been seen; then last Al for it */
#endif
* for progressive JPEG, no scan can have this.
*/
scanptr = cinfo->scan_info;
- if (scanptr->Ss != 0 || scanptr->Se != DCTSIZE2-1) {
+ if (scanptr->Ss != 0 || scanptr->Se != DCTSIZE2 - 1) {
#ifdef C_PROGRESSIVE_SUPPORTED
cinfo->progressive_mode = TRUE;
- last_bitpos_ptr = & last_bitpos[0][0];
+ last_bitpos_ptr = &last_bitpos[0][0];
for (ci = 0; ci < cinfo->num_components; ci++)
for (coefi = 0; coefi < DCTSIZE2; coefi++)
*last_bitpos_ptr++ = -1;
if (thisi < 0 || thisi >= cinfo->num_components)
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
/* Components must appear in SOF order within each scan */
- if (ci > 0 && thisi <= scanptr->component_index[ci-1])
+ if (ci > 0 && thisi <= scanptr->component_index[ci - 1])
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
}
/* Validate progression parameters */
Al = scanptr->Al;
if (cinfo->progressive_mode) {
#ifdef C_PROGRESSIVE_SUPPORTED
- /* The JPEG spec simply gives the ranges 0..13 for Ah and Al, but that
- * seems wrong: the upper bound ought to depend on data precision.
- * Perhaps they really meant 0..N+1 for N-bit precision.
+ /* Rec. ITU-T T.81 | ISO/IEC 10918-1 simply gives the ranges 0..13 for Ah
+ * and Al, but that seems wrong: the upper bound ought to depend on data
+ * precision. Perhaps they really meant 0..N+1 for N-bit precision.
* Here we allow 0..10 for 8-bit data; Al larger than 10 results in
* out-of-range reconstructed DC values during the first DC scan,
* which might cause problems for some decoders.
*/
#if BITS_IN_JSAMPLE == 8
-#define MAX_AH_AL 10
+#define MAX_AH_AL 10
#else
-#define MAX_AH_AL 13
+#define MAX_AH_AL 13
#endif
if (Ss < 0 || Ss >= DCTSIZE2 || Se < Ss || Se >= DCTSIZE2 ||
Ah < 0 || Ah > MAX_AH_AL || Al < 0 || Al > MAX_AH_AL)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
}
for (ci = 0; ci < ncomps; ci++) {
- last_bitpos_ptr = & last_bitpos[scanptr->component_index[ci]][0];
+ last_bitpos_ptr = &last_bitpos[scanptr->component_index[ci]][0];
if (Ss != 0 && last_bitpos_ptr[0] < 0) /* AC without prior DC scan */
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
for (coefi = Ss; coefi <= Se; coefi++) {
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
} else {
/* not first scan */
- if (Ah != last_bitpos_ptr[coefi] || Al != Ah-1)
+ if (Ah != last_bitpos_ptr[coefi] || Al != Ah - 1)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
}
last_bitpos_ptr[coefi] = Al;
#endif
} else {
/* For sequential JPEG, all progression parameters must be these: */
- if (Ss != 0 || Se != DCTSIZE2-1 || Ah != 0 || Al != 0)
+ if (Ss != 0 || Se != DCTSIZE2 - 1 || Ah != 0 || Al != 0)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
/* Make sure components are not sent twice */
for (ci = 0; ci < ncomps; ci++) {
#endif
} else {
for (ci = 0; ci < cinfo->num_components; ci++) {
- if (! component_sent[ci])
+ if (!component_sent[ci])
ERREXIT(cinfo, JERR_MISSING_DATA);
}
}
LOCAL(void)
-select_scan_parameters (j_compress_ptr cinfo)
+select_scan_parameters(j_compress_ptr cinfo)
/* Set up the scan parameters for the current scan */
{
int ci;
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (cinfo->scan_info != NULL) {
/* Prepare for current scan --- the script is already validated */
- my_master_ptr master = (my_master_ptr) cinfo->master;
- const jpeg_scan_info * scanptr = cinfo->scan_info + master->scan_number;
+ my_master_ptr master = (my_master_ptr)cinfo->master;
+ const jpeg_scan_info *scanptr = cinfo->scan_info + master->scan_number;
cinfo->comps_in_scan = scanptr->comps_in_scan;
for (ci = 0; ci < scanptr->comps_in_scan; ci++) {
cinfo->Se = scanptr->Se;
cinfo->Ah = scanptr->Ah;
cinfo->Al = scanptr->Al;
- }
- else
+ } else
#endif
{
/* Prepare for single sequential-JPEG scan containing all components */
cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci];
}
cinfo->Ss = 0;
- cinfo->Se = DCTSIZE2-1;
+ cinfo->Se = DCTSIZE2 - 1;
cinfo->Ah = 0;
cinfo->Al = 0;
}
LOCAL(void)
-per_scan_setup (j_compress_ptr cinfo)
+per_scan_setup(j_compress_ptr cinfo)
/* Do computations that are needed before processing a JPEG scan */
/* cinfo->comps_in_scan and cinfo->cur_comp_info[] are already set */
{
/* For noninterleaved scans, it is convenient to define last_row_height
* as the number of block rows present in the last iMCU row.
*/
- tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
+ tmp = (int)(compptr->height_in_blocks % compptr->v_samp_factor);
if (tmp == 0) tmp = compptr->v_samp_factor;
compptr->last_row_height = tmp;
/* Overall image size in MCUs */
cinfo->MCUs_per_row = (JDIMENSION)
- jdiv_round_up((long) cinfo->_jpeg_width,
- (long) (cinfo->max_h_samp_factor*DCTSIZE));
+ jdiv_round_up((long)cinfo->_jpeg_width,
+ (long)(cinfo->max_h_samp_factor * DCTSIZE));
cinfo->MCU_rows_in_scan = (JDIMENSION)
- jdiv_round_up((long) cinfo->_jpeg_height,
- (long) (cinfo->max_v_samp_factor*DCTSIZE));
+ jdiv_round_up((long)cinfo->_jpeg_height,
+ (long)(cinfo->max_v_samp_factor * DCTSIZE));
cinfo->blocks_in_MCU = 0;
compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height;
compptr->MCU_sample_width = compptr->MCU_width * DCTSIZE;
/* Figure number of non-dummy blocks in last MCU column & row */
- tmp = (int) (compptr->width_in_blocks % compptr->MCU_width);
+ tmp = (int)(compptr->width_in_blocks % compptr->MCU_width);
if (tmp == 0) tmp = compptr->MCU_width;
compptr->last_col_width = tmp;
- tmp = (int) (compptr->height_in_blocks % compptr->MCU_height);
+ tmp = (int)(compptr->height_in_blocks % compptr->MCU_height);
if (tmp == 0) tmp = compptr->MCU_height;
compptr->last_row_height = tmp;
/* Prepare array describing MCU composition */
/* Convert restart specified in rows to actual MCU count. */
/* Note that count must fit in 16 bits, so we provide limiting. */
if (cinfo->restart_in_rows > 0) {
- long nominal = (long) cinfo->restart_in_rows * (long) cinfo->MCUs_per_row;
- cinfo->restart_interval = (unsigned int) MIN(nominal, 65535L);
+ long nominal = (long)cinfo->restart_in_rows * (long)cinfo->MCUs_per_row;
+ cinfo->restart_interval = (unsigned int)MIN(nominal, 65535L);
}
}
*/
METHODDEF(void)
-prepare_for_pass (j_compress_ptr cinfo)
+prepare_for_pass(j_compress_ptr cinfo)
{
- my_master_ptr master = (my_master_ptr) cinfo->master;
+ my_master_ptr master = (my_master_ptr)cinfo->master;
switch (master->pass_type) {
case main_pass:
*/
select_scan_parameters(cinfo);
per_scan_setup(cinfo);
- if (! cinfo->raw_data_in) {
+ if (!cinfo->raw_data_in) {
(*cinfo->cconvert->start_pass) (cinfo);
(*cinfo->downsample->start_pass) (cinfo);
(*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU);
*/
master->pass_type = output_pass;
master->pass_number++;
- /*FALLTHROUGH*/
#endif
+ /*FALLTHROUGH*/
case output_pass:
/* Do a data-output pass. */
/* We need not repeat per-scan setup if prior optimization pass did it. */
- if (! cinfo->optimize_coding) {
+ if (!cinfo->optimize_coding) {
select_scan_parameters(cinfo);
per_scan_setup(cinfo);
}
ERREXIT(cinfo, JERR_NOT_COMPILED);
}
- master->pub.is_last_pass = (master->pass_number == master->total_passes-1);
+ master->pub.is_last_pass = (master->pass_number == master->total_passes - 1);
/* Set up progress monitor's pass info if present */
if (cinfo->progress != NULL) {
*/
METHODDEF(void)
-pass_startup (j_compress_ptr cinfo)
+pass_startup(j_compress_ptr cinfo)
{
cinfo->master->call_pass_startup = FALSE; /* reset flag so call only once */
*/
METHODDEF(void)
-finish_pass_master (j_compress_ptr cinfo)
+finish_pass_master(j_compress_ptr cinfo)
{
- my_master_ptr master = (my_master_ptr) cinfo->master;
+ my_master_ptr master = (my_master_ptr)cinfo->master;
/* The entropy coder always needs an end-of-pass call,
* either to analyze statistics or to flush its output buffer.
* or output of scan 1 (if no optimization).
*/
master->pass_type = output_pass;
- if (! cinfo->optimize_coding)
+ if (!cinfo->optimize_coding)
master->scan_number++;
break;
case huff_opt_pass:
*/
GLOBAL(void)
-jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only)
+jinit_c_master_control(j_compress_ptr cinfo, boolean transcode_only)
{
my_master_ptr master;
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->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE,
+ sizeof(my_comp_master));
+ cinfo->master = (struct jpeg_comp_master *)master;
master->pub.prepare_for_pass = prepare_for_pass;
master->pub.pass_startup = pass_startup;
master->pub.finish_pass = finish_pass_master;
cinfo->num_scans = 1;
}
- if (cinfo->progressive_mode && !cinfo->arith_code) /* TEMPORARY HACK ??? */
+ if (cinfo->progressive_mode && !cinfo->arith_code) /* TEMPORARY HACK ??? */
cinfo->optimize_coding = TRUE; /* assume default tables no good for progressive mode */
/* Initialize my private state */
master->total_passes = cinfo->num_scans * 2;
else
master->total_passes = cinfo->num_scans;
+
+ master->jpeg_version = PACKAGE_NAME " version " VERSION " (build " BUILD ")";
}
projects / platform / upstream / libjpeg-turbo.git / blobdiff