1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709
|
/* Copyright (C) 2001-2021 Artifex Software, Inc.
All Rights Reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.
Refer to licensing information at http://www.artifex.com or contact
Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato,
CA 94945, U.S.A., +1(415)492-9861, for further information.
*/
/* Image setup procedures for Ghostscript library */
#include "memory_.h"
#include "math_.h"
#include "gx.h"
#include "gserrors.h"
#include "gsstruct.h"
#include "gscspace.h"
#include "gsmatrix.h" /* for gsiparam.h */
#include "gsimage.h"
#include "gxarith.h" /* for igcd */
#include "gxdevice.h"
#include "gxiparam.h"
#include "gxpath.h" /* for gx_effective_clip_path */
#include "gximask.h"
#include "gzstate.h"
#include "gsutil.h"
#include "gxdevsop.h"
#include "gximage.h"
/*
The main internal invariant for the gs_image machinery is
straightforward. The state consists primarily of N plane buffers
(planes[]).
*/
typedef struct image_enum_plane_s {
/*
The state of each plane consists of:
- A row buffer, aligned and (logically) large enough to hold one scan line
for that plane. (It may have to be reallocated if the plane width or
depth changes.) A row buffer is "full" if it holds exactly a full scan
line.
*/
gs_string row;
/*
- A position within the row buffer, indicating how many initial bytes are
occupied.
*/
uint pos;
/*
- A (retained) source string, which may be empty (size = 0).
*/
gs_const_string source;
} image_enum_plane_t;
/*
The possible states for each plane do not depend on the state of any other
plane. Either:
- pos = 0, source.size = 0.
- If the underlying image processor says the plane is currently wanted,
either:
- pos = 0, source.size >= one full row of data for this plane. This
case allows us to avoid copying the data from the source string to the
row buffer if the client is providing data in blocks of at least one
scan line.
- pos = full, source.size may have any value.
- pos > 0, pos < full, source.size = 0;
- If the underlying image processor says the plane is not currently
wanted:
- pos = 0, source.size may have any value.
This invariant holds at the beginning and end of each call on
gs_image_next_planes. Note that for each plane, the "plane wanted" status
and size of a full row may change after each call of plane_data. As
documented in gxiparam.h, we assume that a call of plane_data can only
change a plane's status from "wanted" to "not wanted", or change the width
or depth of a wanted plane, if data for that plane was actually supplied
(and used).
*/
/* Define the enumeration state for this interface layer. */
/*typedef struct gs_image_enum_s gs_image_enum; *//* in gsimage.h */
struct gs_image_enum_s {
/* The following are set at initialization time. */
gs_memory_t *memory;
gx_device *dev; /* if 0, just skip over the data */
gx_image_enum_common_t *info; /* driver bookkeeping structure */
int num_planes;
int height;
bool wanted_varies;
/* The following are updated dynamically. */
int plane_index; /* index of next plane of data, */
/* only needed for gs_image_next */
int y;
bool error;
byte wanted[GS_IMAGE_MAX_COMPONENTS]; /* cache gx_image_planes_wanted */
byte client_wanted[GS_IMAGE_MAX_COMPONENTS]; /* see gsimage.h */
image_enum_plane_t planes[GS_IMAGE_MAX_COMPONENTS]; /* see above */
/*
* To reduce setup for transferring complete rows, we maintain a
* partially initialized parameter array for gx_image_plane_data_rows.
* The data member is always set just before calling
* gx_image_plane_data_rows; the data_x and raster members are reset
* when needed.
*/
gx_image_plane_t image_planes[GS_IMAGE_MAX_COMPONENTS];
};
gs_private_st_composite(st_gs_image_enum, gs_image_enum, "gs_image_enum",
gs_image_enum_enum_ptrs, gs_image_enum_reloc_ptrs);
#define gs_image_enum_num_ptrs 2
/* GC procedures */
static
ENUM_PTRS_WITH(gs_image_enum_enum_ptrs, gs_image_enum *eptr)
{
/* Enumerate the data planes. */
index -= gs_image_enum_num_ptrs;
if (index < eptr->num_planes)
ENUM_RETURN_STRING_PTR(gs_image_enum, planes[index].source);
index -= eptr->num_planes;
if (index < eptr->num_planes)
ENUM_RETURN_STRING_PTR(gs_image_enum, planes[index].row);
return 0;
}
ENUM_PTR(0, gs_image_enum, dev);
ENUM_PTR(1, gs_image_enum, info);
ENUM_PTRS_END
static RELOC_PTRS_WITH(gs_image_enum_reloc_ptrs, gs_image_enum *eptr)
{
int i;
RELOC_PTR(gs_image_enum, dev);
RELOC_PTR(gs_image_enum, info);
for (i = 0; i < eptr->num_planes; i++)
RELOC_CONST_STRING_PTR(gs_image_enum, planes[i].source);
for (i = 0; i < eptr->num_planes; i++)
RELOC_STRING_PTR(gs_image_enum, planes[i].row);
}
RELOC_PTRS_END
static int
is_image_visible(const gs_image_common_t * pic, gs_gstate * pgs, gx_clip_path *pcpath)
{
gs_rect image_rect = {{0, 0}, {0, 0}};
gs_rect device_rect;
gs_int_rect device_int_rect;
gs_matrix mat;
int code;
image_rect.q.x = pic->Width;
image_rect.q.y = pic->Height;
if (pic->ImageMatrix.xx == ctm_only(pgs).xx &&
pic->ImageMatrix.xy == ctm_only(pgs).xy &&
pic->ImageMatrix.yx == ctm_only(pgs).yx &&
pic->ImageMatrix.yy == ctm_only(pgs).yy) {
/* Handle common special case separately to accept singular matrix */
mat.xx = mat.yy = 1.;
mat.yx = mat.xy = 0.;
mat.tx = ctm_only(pgs).tx - pic->ImageMatrix.tx;
mat.ty = ctm_only(pgs).ty - pic->ImageMatrix.ty;
} else {
code = gs_matrix_invert(&pic->ImageMatrix, &mat);
if (code < 0)
return code;
code = gs_matrix_multiply(&mat, &ctm_only(pgs), &mat);
if (code < 0)
return code;
}
code = gs_bbox_transform(&image_rect, &mat, &device_rect);
if (code < 0)
return code;
device_int_rect.p.x = (int)floor(device_rect.p.x);
device_int_rect.p.y = (int)floor(device_rect.p.y);
device_int_rect.q.x = (int)ceil(device_rect.q.x);
device_int_rect.q.y = (int)ceil(device_rect.q.y);
if (!gx_cpath_rect_visible(pcpath, &device_int_rect))
return 0;
return 1;
}
/* Create an image enumerator given image parameters and a graphics state. */
int
gs_image_begin_typed(const gs_image_common_t * pic, gs_gstate * pgs,
bool uses_color, bool image_is_text, gx_image_enum_common_t ** ppie)
{
gx_device *dev = gs_currentdevice(pgs);
gx_clip_path *pcpath;
int code = gx_effective_clip_path(pgs, &pcpath);
gx_device *dev2 = dev;
gx_device_color dc_temp, *pdevc = gs_currentdevicecolor_inline(pgs);
if (code < 0)
return code;
/* Processing an image object operation, but this may be for a text object */
ensure_tag_is_set(pgs, pgs->device, image_is_text ? GS_TEXT_TAG : GS_IMAGE_TAG); /* NB: may unset_dev_color */
if (uses_color) {
code = gx_set_dev_color(pgs);
if (code != 0)
return code;
code = gs_gstate_color_load(pgs);
if (code < 0)
return code;
}
if (pgs->overprint || (!pgs->overprint && dev_proc(pgs->device, dev_spec_op)(pgs->device,
gxdso_overprint_active, NULL, 0))) {
gs_overprint_params_t op_params = { 0 };
if_debug0m(gs_debug_flag_overprint, pgs->memory,
"[overprint] Image Overprint\n");
code = gs_do_set_overprint(pgs);
if (code < 0)
return code;
op_params.op_state = OP_STATE_FILL;
gs_gstate_update_overprint(pgs, &op_params);
dev = gs_currentdevice(pgs);
dev2 = dev;
}
/* Imagemask with shading color needs a special optimization
with converting the image into a clipping.
Check for such case after gs_gstate_color_load is done,
because it can cause interpreter callout.
*/
if (pic->type->begin_typed_image == &gx_begin_image1) {
gs_image_t *image = (gs_image_t *)pic;
if(image->ImageMask) {
bool transpose = false;
gs_matrix_double mat;
if((code = gx_image_compute_mat(pgs, NULL, &(image->ImageMatrix), &mat)) < 0)
return code;
if ((any_abs(mat.xy) > any_abs(mat.xx)) && (any_abs(mat.yx) > any_abs(mat.yy)))
transpose = true; /* pure landscape */
code = gx_image_fill_masked_start(dev, gs_currentdevicecolor_inline(pgs), transpose,
pcpath, pgs->memory, pgs->log_op, &dev2);
if (code < 0)
return code;
}
if (dev->interpolate_control < 0) { /* Force interpolation before begin_typed_image */
((gs_data_image_t *)pic)->Interpolate = true;
}
else if (dev->interpolate_control == 0) {
((gs_data_image_t *)pic)->Interpolate = false; /* Suppress interpolation */
}
if (dev2 != dev) {
set_nonclient_dev_color(&dc_temp, 1);
pdevc = &dc_temp;
}
}
code = gx_device_begin_typed_image(dev2, (const gs_gstate *)pgs,
NULL, pic, NULL, pdevc, pcpath, pgs->memory, ppie);
if (code < 0)
return code;
code = is_image_visible(pic, pgs, pcpath);
if (code < 0)
return code;
if (!code)
(*ppie)->skipping = true;
return 0;
}
/* Allocate an image enumerator. */
static void
image_enum_init(gs_image_enum * penum)
{
/* Clean pointers for GC. */
penum->info = 0;
penum->dev = 0;
penum->plane_index = 0;
penum->num_planes = 0;
}
gs_image_enum *
gs_image_enum_alloc(gs_memory_t * mem, client_name_t cname)
{
gs_image_enum *penum =
gs_alloc_struct(mem, gs_image_enum, &st_gs_image_enum, cname);
if (penum != 0) {
penum->memory = mem;
image_enum_init(penum);
}
return penum;
}
/* Start processing an ImageType 1 image. */
int
gs_image_init(gs_image_enum * penum, const gs_image_t * pim, bool multi,
bool image_is_text, gs_gstate * pgs)
{
gs_image_t image;
gx_image_enum_common_t *pie;
int code;
image = *pim;
if (image.ImageMask) {
image.ColorSpace = NULL;
if (pgs->in_cachedevice <= 1)
image.adjust = false;
} else {
if (pgs->in_cachedevice)
return_error(gs_error_undefined);
if (image.ColorSpace == NULL) {
/*
* Use of a non-current color space is potentially
* incorrect, but it appears this case doesn't arise.
*/
image.ColorSpace = gs_cspace_new_DeviceGray(pgs->memory);
if (image.ColorSpace == NULL)
return_error(gs_error_VMerror);
}
}
code = gs_image_begin_typed((const gs_image_common_t *)&image, pgs,
image.ImageMask | image.CombineWithColor,
image_is_text, &pie);
if (code < 0)
return code;
return gs_image_enum_init(penum, pie, (const gs_data_image_t *)&image,
pgs);
}
/*
* Return the number of bytes of data per row for a given plane.
*/
inline uint
gs_image_bytes_per_plane_row(const gs_image_enum * penum, int plane)
{
const gx_image_enum_common_t *pie = penum->info;
return (pie->plane_widths[plane] * pie->plane_depths[plane] + 7) >> 3;
}
/* Cache information when initializing, or after transferring plane data. */
static void
cache_planes(gs_image_enum *penum)
{
int i;
if (penum->wanted_varies) {
penum->wanted_varies =
!gx_image_planes_wanted(penum->info, penum->wanted);
for (i = 0; i < penum->num_planes; ++i)
if (penum->wanted[i])
penum->image_planes[i].raster =
gs_image_bytes_per_plane_row(penum, i);
else
penum->image_planes[i].data = 0;
}
}
/* Advance to the next wanted plane. */
static void
next_plane(gs_image_enum *penum)
{
int px = penum->plane_index;
do {
if (++px == penum->num_planes)
px = 0;
} while (!penum->wanted[px]);
penum->plane_index = px;
}
/*
* Initialize plane_index and (if appropriate) wanted and
* wanted_varies at the beginning of a group of planes.
*/
static void
begin_planes(gs_image_enum *penum)
{
cache_planes(penum);
penum->plane_index = -1;
next_plane(penum);
}
int
gs_image_common_init(gs_image_enum * penum, gx_image_enum_common_t * pie,
const gs_data_image_t * pim, gx_device * dev)
{
/*
* HACK : For a compatibility with gs_image_cleanup_and_free_enum,
* penum->memory must be initialized in advance
* with the memory heap that owns *penum.
*/
int i;
if (pim->Width == 0 || pim->Height == 0) {
gx_device *cdev = pie->dev;
gx_image_end(pie, false);
if (dev_proc(cdev, dev_spec_op)(cdev,
gxdso_pattern_is_cpath_accum, NULL, 0))
gx_device_retain((gx_device *)cdev, false);
return 1;
}
image_enum_init(penum);
penum->dev = dev;
penum->info = pie;
penum->num_planes = pie->num_planes;
/*
* Note that for ImageType 3 InterleaveType 2, penum->height (the
* expected number of data rows) differs from pim->Height (the height
* of the source image in scan lines). This doesn't normally cause
* any problems, because penum->height is not used to determine when
* all the data has been processed: that is up to the plane_data
* procedure for the specific image type.
*/
penum->height = pim->Height;
for (i = 0; i < pie->num_planes; ++i) {
penum->planes[i].pos = 0;
penum->planes[i].source.size = 0; /* for gs_image_next_planes */
penum->planes[i].source.data = 0; /* for GC */
penum->planes[i].row.data = 0; /* for GC */
penum->planes[i].row.size = 0; /* ditto */
penum->image_planes[i].data_x = 0; /* just init once, never changes */
}
/* Initialize the dynamic part of the state. */
penum->y = 0;
penum->error = false;
penum->wanted_varies = true;
begin_planes(penum);
return 0;
}
/* Initialize an enumerator for a general image.
penum->memory must be initialized in advance.
*/
int
gs_image_enum_init(gs_image_enum * penum, gx_image_enum_common_t * pie,
const gs_data_image_t * pim, gs_gstate *pgs)
{
pgs->device->sgr.stroke_stored = false;
return gs_image_common_init(penum, pie, pim,
(pgs->in_charpath ? NULL :
gs_currentdevice_inline(pgs)));
}
/* Return the set of planes wanted. */
const byte *
gs_image_planes_wanted(gs_image_enum *penum)
{
int i;
/*
* A plane is wanted at this interface if it is wanted by the
* underlying machinery and has no buffered or retained data.
*/
for (i = 0; i < penum->num_planes; ++i)
penum->client_wanted[i] =
(penum->wanted[i] &&
penum->planes[i].pos + penum->planes[i].source.size <
penum->image_planes[i].raster);
return penum->client_wanted;
}
/*
* Return the enumerator memory used for allocating the row buffers.
* Because some PostScript files use save/restore within an image data
* reading procedure, this must be a stable allocator.
*/
static gs_memory_t *
gs_image_row_memory(const gs_image_enum *penum)
{
return gs_memory_stable(penum->memory);
}
/* Free the row buffers when cleaning up. */
static void
free_row_buffers(gs_image_enum *penum, int num_planes, client_name_t cname)
{
int i;
for (i = num_planes - 1; i >= 0; --i) {
if_debug3m('b', penum->memory, "[b]free plane %d row ("PRI_INTPTR",%u)\n",
i, (intptr_t)penum->planes[i].row.data,
penum->planes[i].row.size);
gs_free_string(gs_image_row_memory(penum), penum->planes[i].row.data,
penum->planes[i].row.size, cname);
penum->planes[i].row.data = 0;
penum->planes[i].row.size = 0;
}
}
/* Process the next piece of an image. */
int
gs_image_next(gs_image_enum * penum, const byte * dbytes, uint dsize,
uint * pused)
{
int px = penum->plane_index;
int num_planes = penum->num_planes;
int i, code;
uint used[GS_IMAGE_MAX_COMPONENTS];
gs_const_string plane_data[GS_IMAGE_MAX_COMPONENTS];
if (penum->planes[px].source.size != 0)
return_error(gs_error_rangecheck);
for (i = 0; i < num_planes; i++)
plane_data[i].size = 0;
plane_data[px].data = dbytes;
plane_data[px].size = dsize;
penum->error = false;
code = gs_image_next_planes(penum, plane_data, used);
*pused = used[px];
if (code >= 0)
next_plane(penum);
return code;
}
int
gs_image_next_planes(gs_image_enum * penum,
gs_const_string *plane_data /*[num_planes]*/,
uint *used /*[num_planes]*/)
{
const int num_planes = penum->num_planes;
int i;
int code = 0;
#ifdef DEBUG
if (gs_debug_c('b')) {
int pi;
for (pi = 0; pi < num_planes; ++pi)
dmprintf6(penum->memory, "[b]plane %d source="PRI_INTPTR",%u pos=%u data="PRI_INTPTR",%u\n",
pi, (intptr_t)penum->planes[pi].source.data,
penum->planes[pi].source.size, penum->planes[pi].pos,
(intptr_t)plane_data[pi].data, plane_data[pi].size);
}
#endif
for (i = 0; i < num_planes; ++i) {
used[i] = 0;
if (penum->wanted[i] && plane_data[i].size != 0) {
penum->planes[i].source.size = plane_data[i].size;
penum->planes[i].source.data = plane_data[i].data;
}
}
for (;;) {
/* If wanted can vary, only transfer 1 row at a time. */
int h = (penum->wanted_varies ? 1 : max_int);
/* Move partial rows from source[] to row[]. */
for (i = 0; i < num_planes; ++i) {
int pos, size;
uint raster;
if (!penum->wanted[i])
continue; /* skip unwanted planes */
pos = penum->planes[i].pos;
size = penum->planes[i].source.size;
raster = penum->image_planes[i].raster;
if (size > 0) {
if (pos < raster && (pos != 0 || size < raster)) {
/* Buffer a partial row. */
int copy = min(size, raster - pos);
uint old_size = penum->planes[i].row.size;
/* Make sure the row buffer is fully allocated. */
if (raster > old_size) {
gs_memory_t *mem = gs_image_row_memory(penum);
byte *old_data = penum->planes[i].row.data;
byte *row =
(old_data == 0 ?
gs_alloc_string(mem, raster,
"gs_image_next(row)") :
gs_resize_string(mem, old_data, old_size, raster,
"gs_image_next(row)"));
if_debug5m('b', mem, "[b]plane %d row ("PRI_INTPTR",%u) => ("PRI_INTPTR",%u)\n",
i, (intptr_t)old_data, old_size,
(intptr_t)row, raster);
if (row == 0) {
code = gs_note_error(gs_error_VMerror);
free_row_buffers(penum, i, "gs_image_next(row)");
break;
}
penum->planes[i].row.data = row;
penum->planes[i].row.size = raster;
}
memcpy(penum->planes[i].row.data + pos,
penum->planes[i].source.data, copy);
penum->planes[i].source.data += copy;
penum->planes[i].source.size = size -= copy;
penum->planes[i].pos = pos += copy;
used[i] += copy;
}
}
if (h == 0)
continue; /* can't transfer any data this cycle */
if (pos == raster) {
/*
* This plane will be transferred from the row buffer,
* so we can only transfer one row.
*/
h = min(h, 1);
penum->image_planes[i].data = penum->planes[i].row.data;
} else if (pos == 0 && size >= raster) {
/* We can transfer 1 or more planes from the source. */
if (raster) {
h = min(h, size / raster);
penum->image_planes[i].data = penum->planes[i].source.data;
}
else
h = 0;
} else
h = 0; /* not enough data in this plane */
}
if (h == 0 || code != 0)
break;
/* Pass rows to the device. */
if (penum->dev == 0) {
/*
* ****** NOTE: THE FOLLOWING IS NOT CORRECT FOR ImageType 3
* ****** InterleaveType 2, SINCE MASK HEIGHT AND IMAGE HEIGHT
* ****** MAY DIFFER (BY AN INTEGER FACTOR). ALSO, plane_depths[0]
* ****** AND plane_widths[0] ARE NOT UPDATED.
*/
if (penum->y + h < penum->height)
code = 0;
else
h = penum->height - penum->y, code = 1;
} else {
code = gx_image_plane_data_rows(penum->info, penum->image_planes,
h, &h);
if_debug2m('b', penum->memory, "[b]used %d, code=%d\n", h, code);
penum->error = code < 0;
}
penum->y += h;
/* Update positions and sizes. */
if (h == 0)
break;
for (i = 0; i < num_planes; ++i) {
int count;
if (!penum->wanted[i])
continue;
count = penum->image_planes[i].raster * h;
if (penum->planes[i].pos) {
/* We transferred the row from the row buffer. */
penum->planes[i].pos = 0;
} else {
/* We transferred the row(s) from the source. */
penum->planes[i].source.data += count;
penum->planes[i].source.size -= count;
used[i] += count;
}
}
cache_planes(penum);
if (code > 0)
break;
}
/* Return the retained data pointers. */
for (i = 0; i < num_planes; ++i)
plane_data[i] = penum->planes[i].source;
return code;
}
/* Clean up after processing an image. */
/* Public for ghostpcl. */
int
gs_image_cleanup(gs_image_enum * penum, gs_gstate *pgs)
{
int code = 0, code1;
free_row_buffers(penum, penum->num_planes, "gs_image_cleanup(row)");
if (penum->info != 0) {
if (dev_proc(penum->info->dev, dev_spec_op)(penum->info->dev,
gxdso_pattern_is_cpath_accum, NULL, 0)) {
/* Performing a conversion of imagemask into a clipping path. */
gx_device *cdev = penum->info->dev;
code = gx_image_end(penum->info, !penum->error); /* Releases penum->info . */
code1 = gx_image_fill_masked_end(cdev, penum->dev, gs_currentdevicecolor_inline(pgs));
if (code == 0)
code = code1;
} else
code = gx_image_end(penum->info, !penum->error);
}
/* Don't free the local enumerator -- the client does that. */
return code;
}
/* Clean up after processing an image and free the enumerator. */
int
gs_image_cleanup_and_free_enum(gs_image_enum * penum, gs_gstate *pgs)
{
int code;
if (penum == NULL)
return 0;
code = gs_image_cleanup(penum, pgs);
gs_free_object(penum->memory, penum, "gs_image_cleanup_and_free_enum");
return code;
}
|