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modules/javafx.graphics/src/main/native-iio/libjpeg7/jcmaster.c
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@@ -1,10 +1,10 @@
/*
* jcmaster.c
*
* Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2003-2009 by Guido Vollbeding.
+ * Modified 2003-2017 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.
*
* This file contains master control logic for the JPEG compressor.
* These routines are concerned with parameter validation, initial setup,
@@ -41,186 +41,48 @@
/*
* Support routines that do various essential calculations.
*/
-/*
- * Compute JPEG image dimensions and related values.
- * NOTE: this is exported for possible use by application.
- * Hence it mustn't do anything that can't be done twice.
- */
-
-GLOBAL(void)
-jpeg_calc_jpeg_dimensions (j_compress_ptr cinfo)
-/* Do computations that are needed before master selection phase */
-{
-#ifdef DCT_SCALING_SUPPORTED
-
- /* Compute actual JPEG image dimensions and DCT scaling choices. */
- if (cinfo->scale_num >= cinfo->scale_denom * 8) {
- /* Provide 8/1 scaling */
- cinfo->jpeg_width = cinfo->image_width << 3;
- cinfo->jpeg_height = cinfo->image_height << 3;
- cinfo->min_DCT_h_scaled_size = 1;
- cinfo->min_DCT_v_scaled_size = 1;
- } else if (cinfo->scale_num >= cinfo->scale_denom * 4) {
- /* Provide 4/1 scaling */
- cinfo->jpeg_width = cinfo->image_width << 2;
- cinfo->jpeg_height = cinfo->image_height << 2;
- cinfo->min_DCT_h_scaled_size = 2;
- cinfo->min_DCT_v_scaled_size = 2;
- } else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 8) {
- /* Provide 8/3 scaling */
- cinfo->jpeg_width = (cinfo->image_width << 1) + (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 2, 3L);
- cinfo->jpeg_height = (cinfo->image_height << 1) + (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 2, 3L);
- cinfo->min_DCT_h_scaled_size = 3;
- cinfo->min_DCT_v_scaled_size = 3;
- } else if (cinfo->scale_num >= cinfo->scale_denom * 2) {
- /* Provide 2/1 scaling */
- cinfo->jpeg_width = cinfo->image_width << 1;
- cinfo->jpeg_height = cinfo->image_height << 1;
- cinfo->min_DCT_h_scaled_size = 4;
- cinfo->min_DCT_v_scaled_size = 4;
- } else if (cinfo->scale_num * 5 >= cinfo->scale_denom * 8) {
- /* Provide 8/5 scaling */
- cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 3, 5L);
- cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 3, 5L);
- cinfo->min_DCT_h_scaled_size = 5;
- cinfo->min_DCT_v_scaled_size = 5;
- } else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 4) {
- /* Provide 4/3 scaling */
- cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width, 3L);
- cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height, 3L);
- cinfo->min_DCT_h_scaled_size = 6;
- cinfo->min_DCT_v_scaled_size = 6;
- } else if (cinfo->scale_num * 7 >= cinfo->scale_denom * 8) {
- /* Provide 8/7 scaling */
- cinfo->jpeg_width = cinfo->image_width + (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width, 7L);
- cinfo->jpeg_height = cinfo->image_height + (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height, 7L);
- cinfo->min_DCT_h_scaled_size = 7;
- cinfo->min_DCT_v_scaled_size = 7;
- } else if (cinfo->scale_num >= cinfo->scale_denom) {
- /* Provide 1/1 scaling */
- cinfo->jpeg_width = cinfo->image_width;
- cinfo->jpeg_height = cinfo->image_height;
- cinfo->min_DCT_h_scaled_size = DCTSIZE;
- cinfo->min_DCT_v_scaled_size = DCTSIZE;
- } else if (cinfo->scale_num * 9 >= cinfo->scale_denom * 8) {
- /* Provide 8/9 scaling */
- cinfo->jpeg_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 8, 9L);
- cinfo->jpeg_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 8, 9L);
- cinfo->min_DCT_h_scaled_size = 9;
- cinfo->min_DCT_v_scaled_size = 9;
- } else if (cinfo->scale_num * 5 >= cinfo->scale_denom * 4) {
- /* Provide 4/5 scaling */
- cinfo->jpeg_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 4, 5L);
- cinfo->jpeg_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 4, 5L);
- cinfo->min_DCT_h_scaled_size = 10;
- cinfo->min_DCT_v_scaled_size = 10;
- } else if (cinfo->scale_num * 11 >= cinfo->scale_denom * 8) {
- /* Provide 8/11 scaling */
- cinfo->jpeg_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 8, 11L);
- cinfo->jpeg_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 8, 11L);
- cinfo->min_DCT_h_scaled_size = 11;
- cinfo->min_DCT_v_scaled_size = 11;
- } else if (cinfo->scale_num * 3 >= cinfo->scale_denom * 2) {
- /* Provide 2/3 scaling */
- cinfo->jpeg_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 2, 3L);
- cinfo->jpeg_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 2, 3L);
- cinfo->min_DCT_h_scaled_size = 12;
- cinfo->min_DCT_v_scaled_size = 12;
- } else if (cinfo->scale_num * 13 >= cinfo->scale_denom * 8) {
- /* Provide 8/13 scaling */
- cinfo->jpeg_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 8, 13L);
- cinfo->jpeg_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 8, 13L);
- cinfo->min_DCT_h_scaled_size = 13;
- cinfo->min_DCT_v_scaled_size = 13;
- } else if (cinfo->scale_num * 7 >= cinfo->scale_denom * 4) {
- /* Provide 4/7 scaling */
- cinfo->jpeg_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 4, 7L);
- cinfo->jpeg_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 4, 7L);
- cinfo->min_DCT_h_scaled_size = 14;
- cinfo->min_DCT_v_scaled_size = 14;
- } else if (cinfo->scale_num * 15 >= cinfo->scale_denom * 8) {
- /* Provide 8/15 scaling */
- cinfo->jpeg_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width * 8, 15L);
- cinfo->jpeg_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height * 8, 15L);
- cinfo->min_DCT_h_scaled_size = 15;
- cinfo->min_DCT_v_scaled_size = 15;
- } else {
- /* Provide 1/2 scaling */
- cinfo->jpeg_width = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_width, 2L);
- cinfo->jpeg_height = (JDIMENSION)
- jdiv_round_up((long) cinfo->image_height, 2L);
- cinfo->min_DCT_h_scaled_size = 16;
- cinfo->min_DCT_v_scaled_size = 16;
- }
-
-#else /* !DCT_SCALING_SUPPORTED */
-
- /* Hardwire it to "no scaling" */
- cinfo->jpeg_width = cinfo->image_width;
- cinfo->jpeg_height = cinfo->image_height;
- cinfo->min_DCT_h_scaled_size = DCTSIZE;
- cinfo->min_DCT_v_scaled_size = DCTSIZE;
-
-#endif /* DCT_SCALING_SUPPORTED */
-}
-
-
LOCAL(void)
initial_setup (j_compress_ptr cinfo)
/* Do computations that are needed before master selection phase */
{
int ci, ssize;
jpeg_component_info *compptr;
- long samplesperrow;
- JDIMENSION jd_samplesperrow;
- jpeg_calc_jpeg_dimensions(cinfo);
+ /* Sanity check on block_size */
+ if (cinfo->block_size < 1 || cinfo->block_size > 16)
+ ERREXIT2(cinfo, JERR_BAD_DCTSIZE, cinfo->block_size, cinfo->block_size);
+
+ /* Derive natural_order from block_size */
+ switch (cinfo->block_size) {
+ case 2: cinfo->natural_order = jpeg_natural_order2; break;
+ case 3: cinfo->natural_order = jpeg_natural_order3; break;
+ case 4: cinfo->natural_order = jpeg_natural_order4; break;
+ case 5: cinfo->natural_order = jpeg_natural_order5; break;
+ case 6: cinfo->natural_order = jpeg_natural_order6; break;
+ case 7: cinfo->natural_order = jpeg_natural_order7; break;
+ default: cinfo->natural_order = jpeg_natural_order; break;
+ }
+
+ /* Derive lim_Se from block_size */
+ cinfo->lim_Se = cinfo->block_size < DCTSIZE ?
+ cinfo->block_size * cinfo->block_size - 1 : DCTSIZE2-1;
/* 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)
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);
- /* 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 */
if (cinfo->num_components > MAX_COMPONENTS)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
@@ -276,33 +138,35 @@
compptr->DCT_v_scaled_size = compptr->DCT_h_scaled_size * 2;
/* 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));
+ (long) (cinfo->max_h_samp_factor * cinfo->block_size));
compptr->height_in_blocks = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_height * (long) compptr->v_samp_factor,
- (long) (cinfo->max_v_samp_factor * DCTSIZE));
+ (long) (cinfo->max_v_samp_factor * cinfo->block_size));
/* Size in samples */
compptr->downsampled_width = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_width *
(long) (compptr->h_samp_factor * compptr->DCT_h_scaled_size),
- (long) (cinfo->max_h_samp_factor * DCTSIZE));
+ (long) (cinfo->max_h_samp_factor * cinfo->block_size));
compptr->downsampled_height = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_height *
(long) (compptr->v_samp_factor * compptr->DCT_v_scaled_size),
- (long) (cinfo->max_v_samp_factor * DCTSIZE));
- /* Mark component needed (this flag isn't actually used for compression) */
- compptr->component_needed = TRUE;
+ (long) (cinfo->max_v_samp_factor * cinfo->block_size));
+ /* 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
* 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));
+ (long) (cinfo->max_v_samp_factor * cinfo->block_size));
}
#ifdef C_MULTISCAN_FILES_SUPPORTED
@@ -318,15 +182,12 @@
boolean component_sent[MAX_COMPONENTS];
#ifdef C_PROGRESSIVE_SUPPORTED
int * last_bitpos_ptr;
int last_bitpos[MAX_COMPONENTS][DCTSIZE2];
/* -1 until that coefficient has been seen; then last Al for it */
- MEMZERO(last_bitpos, SIZEOF(last_bitpos));
#endif
- MEMZERO(component_sent, SIZEOF(component_sent));
-
if (cinfo->num_scans <= 0)
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, 0);
/* For sequential JPEG, all scans must have Ss=0, Se=DCTSIZE2-1;
* for progressive JPEG, no scan can have this.
@@ -373,17 +234,13 @@
* 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
-#else
-#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)
+ Ah < 0 || Ah > (cinfo->data_precision > 8 ? 13 : 10) ||
+ Al < 0 || Al > (cinfo->data_precision > 8 ? 13 : 10))
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
if (Ss == 0) {
if (Se != 0) /* DC and AC together not OK */
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
} else {
@@ -441,10 +298,43 @@
ERREXIT(cinfo, JERR_MISSING_DATA);
}
}
}
+
+LOCAL(void)
+reduce_script (j_compress_ptr cinfo)
+/* Adapt scan script for use with reduced block size;
+ * assume that script has been validated before.
+ */
+{
+ jpeg_scan_info * scanptr;
+ int idxout, idxin;
+
+ /* Circumvent const declaration for this function */
+ scanptr = (jpeg_scan_info *) cinfo->scan_info;
+ idxout = 0;
+
+ for (idxin = 0; idxin < cinfo->num_scans; idxin++) {
+ /* After skipping, idxout becomes smaller than idxin */
+ if (idxin != idxout)
+ /* Copy rest of data;
+ * note we stay in given chunk of allocated memory.
+ */
+ scanptr[idxout] = scanptr[idxin];
+ if (scanptr[idxout].Ss > cinfo->lim_Se)
+ /* Entire scan out of range - skip this entry */
+ continue;
+ if (scanptr[idxout].Se > cinfo->lim_Se)
+ /* Limit scan to end of block */
+ scanptr[idxout].Se = cinfo->lim_Se;
+ idxout++;
+ }
+
+ cinfo->num_scans = idxout;
+}
+
#endif /* C_MULTISCAN_FILES_SUPPORTED */
LOCAL(void)
select_scan_parameters (j_compress_ptr cinfo)
@@ -461,14 +351,17 @@
cinfo->comps_in_scan = scanptr->comps_in_scan;
for (ci = 0; ci < scanptr->comps_in_scan; ci++) {
cinfo->cur_comp_info[ci] =
&cinfo->comp_info[scanptr->component_index[ci]];
}
+ if (cinfo->progressive_mode) {
cinfo->Ss = scanptr->Ss;
cinfo->Se = scanptr->Se;
cinfo->Ah = scanptr->Ah;
cinfo->Al = scanptr->Al;
+ return;
+ }
}
else
#endif
{
/* Prepare for single sequential-JPEG scan containing all components */
@@ -477,15 +370,15 @@
MAX_COMPS_IN_SCAN);
cinfo->comps_in_scan = cinfo->num_components;
for (ci = 0; ci < cinfo->num_components; ci++) {
cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci];
}
+ }
cinfo->Ss = 0;
- cinfo->Se = DCTSIZE2-1;
+ cinfo->Se = cinfo->block_size * cinfo->block_size - 1;
cinfo->Ah = 0;
cinfo->Al = 0;
- }
}
LOCAL(void)
per_scan_setup (j_compress_ptr cinfo)
@@ -529,14 +422,14 @@
MAX_COMPS_IN_SCAN);
/* Overall image size in MCUs */
cinfo->MCUs_per_row = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_width,
- (long) (cinfo->max_h_samp_factor*DCTSIZE));
+ (long) (cinfo->max_h_samp_factor * cinfo->block_size));
cinfo->MCU_rows_in_scan = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_height,
- (long) (cinfo->max_v_samp_factor*DCTSIZE));
+ (long) (cinfo->max_v_samp_factor * cinfo->block_size));
cinfo->blocks_in_MCU = 0;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
@@ -728,11 +621,11 @@
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->master = &master->pub;
master->pub.prepare_for_pass = prepare_for_pass;
master->pub.pass_startup = pass_startup;
master->pub.finish_pass = finish_pass_master;
master->pub.is_last_pass = FALSE;
@@ -740,20 +633,28 @@
initial_setup(cinfo);
if (cinfo->scan_info != NULL) {
#ifdef C_MULTISCAN_FILES_SUPPORTED
validate_script(cinfo);
+ if (cinfo->block_size < DCTSIZE)
+ reduce_script(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else {
cinfo->progressive_mode = FALSE;
cinfo->num_scans = 1;
}
- if (cinfo->progressive_mode && cinfo->arith_code == 0) /* TEMPORARY HACK ??? */
- cinfo->optimize_coding = TRUE; /* assume default tables no good for progressive mode */
+ 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) {
/* no main pass in transcoding */
if (cinfo->optimize_coding)
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