psd.c 55.9 KB
Newer Older
1
/*
Manish Singh's avatar
Manish Singh committed
2
 * PSD Plugin version 1.9.9.9b (BETA)
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
 * This GIMP plug-in is designed to load Adobe Photoshop(tm) files (.PSD)
 *
 * Adam D. Moss <adam@gimp.org> <adam@foxbox.org>
 *
 *     If this plug-in fails to load a file which you think it should,
 *     please tell me what seemed to go wrong, and anything you know
 *     about the image you tried to load.  Please don't send big PSD
 *     files to me without asking first.
 *
 *          Copyright (C) 1997-98 Adam D. Moss
 *          Copyright (C) 1996    Torsten Martinsen
 * Portions Copyright (C) 1995    Peter Mattis
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
Manish Singh's avatar
Manish Singh committed
28
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 30 31 32 33 34 35 36 37 38
 */

/*
 * Adobe and Adobe Photoshop are trademarks of Adobe Systems
 * Incorporated that may be registered in certain jurisdictions.
 */

/*
 * Revision history:
 *
Manish Singh's avatar
Manish Singh committed
39 40 41 42 43 44
 *  98.05.04 / v1.9.9.9b / Adam D. Moss
 *       Changed the Pascal-style string-reading stuff.  That fixed
 *       some file-padding problems.  Made all debugging output
 *       compile-time optional (please leave it enabled for now).
 *       Reduced memory requirements; still much room for improvement.
 *
Manish Singh's avatar
Manish Singh committed
45 46 47 48 49
 *  98.04.28 / v1.9.9.9 / Adam D. Moss
 *       Fixed the correct channel interlacing of 'raw' flat images.
 *       Thanks to Christian Kirsch and Jay Cox for spotting this.
 *       Changed some of the I/O routines.
 *
50 51 52 53 54
 *  98.04.26 / v1.9.9.8 / Adam D. Moss
 *       Implemented Aux-channels for layered files.  Got rid
 *       of <endian.h> nonsense.  Improved Layer Mask padding.
 *       Enforced num_layers/num_channels limit checks.
 *
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
 *  98.04.23 / v1.9.9.5 / Adam D. Moss
 *       Got Layer Masks working, got Aux-channels working
 *       for unlayered files, fixed 'raw' channel loading, fixed
 *       some other mini-bugs, slightly better progress meters.
 *       Thanks to everyone who is helping with the testing!
 *
 *  98.04.21 / v1.9.9.1 / Adam D. Moss
 *       A little cleanup.  Implemented Layer Masks but disabled
 *       them again - PS masks can be a different size to their
 *       owning layer, unlike those in GIMP.
 *
 *  98.04.19 / v1.9.9.0 / Adam D. Moss
 *       Much happier now.
 *
 *  97.03.13 / v1.9.0 / Adam D. Moss
 *       Layers, channels and masks, oh my.
 *       + Bugfixes & rearchitecturing.
 *
 *  97.01.30 / v1.0.12 / Torsten Martinsen
 *       Flat PSD image loading.
 */

77 78 79 80 81 82 83
/*
 * TODO:
 *
 *      Crush 16bpp channels
 *	CMYK -> RGB
 *	Load BITMAP mode
 *
Manish Singh's avatar
Manish Singh committed
84
 *      File saving.  (I am unlikely to be able to do this for
85 86 87 88 89 90 91 92 93 94 95 96 97
 *         practical reasons.  Suggest someone works on it as a
 *         separate plugin - please let me know.)
 *
 *      Reduce memory requirements!
 */

/*
 * BUGS:
 *
 *      Sometimes creates a superfluous aux channel?  Harmless.
 */


98 99

/* *** DEFINES *** */
Manish Singh's avatar
Manish Singh committed
100 101

/* set to TRUE if you want debugging, FALSE otherwise */
102
#define PSD_DEBUG TRUE
Manish Singh's avatar
Manish Singh committed
103

104 105
/* the max number of layers that this plugin should try to load */
#define MAX_LAYERS 100
Manish Singh's avatar
Manish Singh committed
106

107
/* the max number of channels that this plugin should let a layer have */
108
#define MAX_CHANNELS 30
Manish Singh's avatar
Manish Singh committed
109

110 111 112
/* *** END OF DEFINES *** */


Manish Singh's avatar
Manish Singh committed
113 114 115

#define IFDBG if (PSD_DEBUG)

116 117
#include <stdio.h>
#include <stdlib.h>
Manish Singh's avatar
Manish Singh committed
118
#include <unistd.h>
Manish Singh's avatar
Manish Singh committed
119
#include <string.h>
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
#include <glib.h>
#include "libgimp/gimp.h"


/* Local types etc
 */
typedef enum
{
  PSD_UNKNOWN_IMAGE,
  PSD_RGB_IMAGE,
  PSD_RGBA_IMAGE,
  PSD_GRAY_IMAGE,
  PSD_GRAYA_IMAGE,
  PSD_INDEXED_IMAGE,
  PSD_INDEXEDA_IMAGE
} psd_imagetype;



/* Declare some local functions.
 */
static void   query      (void);
static void   run        (char    *name,
                          int      nparams,
                          GParam  *param,
                          int     *nreturn_vals,
                          GParam **return_vals);
GDrawableType psd_type_to_gimp_type
                         (psd_imagetype psdtype);
GImageType psd_type_to_gimp_base_type
                         (psd_imagetype psdtype);
GLayerMode psd_lmode_to_gimp_lmode
                         (gchar modekey[4]);
static gint32 load_image (char   *filename);



GPlugInInfo PLUG_IN_INFO =
{
  NULL,    /* init_proc */
  NULL,    /* quit_proc */
  query,   /* query_proc */
  run,     /* run_proc */
};



typedef struct PsdChannel
{
  gchar *name;
  guchar *data;
  gint type;

  guint32 compressedsize;
  
} PSDchannel;



typedef struct PsdLayer
{
  gint num_channels;
  PSDchannel channel[MAX_CHANNELS];
  
  gint32 x;
  gint32 y;
  guint32 width;
  guint32 height;
  
  gchar blendkey[4];
  guchar opacity;
  gchar clipping;

  gboolean protecttrans;
  gboolean visible;

Manish Singh's avatar
Manish Singh committed
196
  gchar* name;
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

  gint32 lm_x;
  gint32 lm_y;
  gint32 lm_width;
  gint32 lm_height;

} PSDlayer;



typedef struct PsdImage
{
  gint num_layers;
  PSDlayer layer[MAX_LAYERS];

  gboolean absolute_alpha;

  gint type;
  
  gulong colmaplen;
  guchar *colmapdata;

  guint num_aux_channels;
  PSDchannel aux_channel[MAX_CHANNELS];

  gchar *caption;

  guint active_layer_num;

} PSDimage;



static PSDimage psd_image;



static struct {
Manish Singh's avatar
Manish Singh committed
235
    gchar signature[4];
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
    gushort version;
    guchar reserved[6];
    gushort channels;
    gulong rows;
    gulong columns;
    gushort bpp;
    gushort mode;
    gulong imgreslen;
    gulong miscsizelen;
    gushort compression;
    gushort * rowlength;
    long  imgdatalen;
} PSDheader;


static gchar * modename[] = {
    "Bitmap", 
    "Grayscale", 
    "Indexed Colour", 
    "RGB Colour", 
    "CMYK Colour", 
    "<invalid>", 
    "<invalid>", 
    "Multichannel", 
    "Duotone", 
    "Lab Colour", 
    "<invalid>"
};


static const gchar *prog_name = "PSD";


static void unpack_pb_channel(FILE *fd, guchar *dst, gint32 unpackedlen,
				  guint32 *offset);
Manish Singh's avatar
Manish Singh committed
271
static void decode(long clen, long uclen, gchar *src, gchar *dst, int step);
272
static void packbitsdecode(long *clenp, long uclen,
Manish Singh's avatar
Manish Singh committed
273
			   gchar *src, gchar *dst, int step);
274 275 276 277 278 279 280
static void cmyk2rgb(guchar *src, guchar *destp,
		     long width, long height, int alpha);
static void cmykp2rgb(guchar *src, guchar *destp,
		      long width, long height, int alpha);
static void cmyk_to_rgb(int *c, int *m, int *y, int *k);
static guchar getguchar(FILE *fd, gchar *why);
static gshort getgshort(FILE *fd, gchar *why);
281
static glong getglong(FILE *fd, gchar *why);
282
static void xfread(FILE *fd, void *buf, long len, gchar *why);
Manish Singh's avatar
Manish Singh committed
283 284
static void xfread_interlaced(FILE *fd, guchar *buf, long len, gchar *why,
			      gint step);
285 286 287
static void *xmalloc(size_t n);
static void read_whole_file(FILE *fd);
static void reshuffle_cmap(guchar *map256);
Manish Singh's avatar
Manish Singh committed
288 289 290
static guchar *getpascalstring(FILE *fd, gchar *why);
void throwchunk(size_t n, FILE * fd, gchar *why);
void dumpchunk(size_t n, FILE * fd, gchar *why);
291 292


293 294
MAIN()

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

static void
query ()
{
  static GParamDef load_args[] =
  {
    { PARAM_INT32, "run_mode", "Interactive, non-interactive" },
    { PARAM_STRING, "filename", "The name of the file to load" },
    { PARAM_STRING, "raw_filename", "The name of the file to load" },
  };
  static GParamDef load_return_vals[] =
  {
    { PARAM_IMAGE, "image", "Output image" },
  };
  static int nload_args = sizeof (load_args) / sizeof (load_args[0]);
  static int nload_return_vals = sizeof (load_return_vals) / sizeof (load_return_vals[0]);

  /*  static GParamDef save_args[] =
  {
    { PARAM_INT32, "run_mode", "Interactive, non-interactive" },
    { PARAM_IMAGE, "image", "Input image" },
    { PARAM_DRAWABLE, "drawable", "Drawable to save" },
    { PARAM_STRING, "filename", "The name of the file to save the image in" },
    { PARAM_STRING, "raw_filename", "The name of the file to save the image in" },
    { PARAM_INT32, "compression", "Compression type: { NONE (0), LZW (1), PACKBITS (2)" },
    { PARAM_INT32, "fillorder", "Fill Order: { MSB to LSB (0), LSB to MSB (1)" }
  };
  static int nsave_args = sizeof (save_args) / sizeof (save_args[0]);*/

  gimp_install_procedure ("file_psd_load",
                          "loads files of the Photoshop(tm) PSD file format",
                          "FIXME: write help for psd_load",
                          "Adam D. Moss & Torsten Martinsen",
                          "Adam D. Moss & Torsten Martinsen",
                          "1996-1997",
                          "<Load>/PSD",
			  NULL,
                          PROC_PLUG_IN,
                          nload_args, nload_return_vals,
                          load_args, load_return_vals);

  /*  gimp_install_procedure ("file_psd_save",
                          "saves files in the Photoshop(tm) PSD file format",
                          "FIXME: write help for psd_save",
                          "Adam D. Moss & Torsten Martinsen",
                          "Adam D. Moss & Torsten Martinsen",
                          "1996-1997",
                          "<Save>/PSD",
			  "RGB, GRAY, INDEXED",
                          PROC_PLUG_IN,
                          nsave_args, 0,
                          save_args, NULL);*/

  gimp_register_load_handler ("file_psd_load", "psd", "");
  /*  gimp_register_save_handler ("file_psd_save", "psd", "");*/
}



static void
run (char    *name,
     int      nparams,
     GParam  *param,
     int     *nreturn_vals,
     GParam **return_vals)
{
  static GParam values[2];
  GRunModeType run_mode;
  /*  GStatusType status = STATUS_SUCCESS;*/
  gint32 image_ID;

  run_mode = param[0].data.d_int32;

  *nreturn_vals = 1;
  *return_vals = values;
  values[0].type = PARAM_STATUS;
  values[0].data.d_status = STATUS_CALLING_ERROR;

  if (strcmp (name, "file_psd_load") == 0)
    {
      image_ID = load_image (param[1].data.d_string);

      if (image_ID != -1)
	{
	  *nreturn_vals = 2;
	  values[0].data.d_status = STATUS_SUCCESS;
	  values[1].type = PARAM_IMAGE;
	  values[1].data.d_image = image_ID;
	}
      else
	{
	  values[0].data.d_status = STATUS_EXECUTION_ERROR;
	}
    }
}


GDrawableType
psd_type_to_gimp_type (psd_imagetype psdtype)
{
  switch(psdtype)
    {
    case PSD_RGBA_IMAGE: return(RGBA_IMAGE);
    case PSD_RGB_IMAGE: return(RGB_IMAGE);
    case PSD_GRAYA_IMAGE: return(GRAYA_IMAGE);
    case PSD_GRAY_IMAGE: return(GRAY_IMAGE);
    case PSD_INDEXEDA_IMAGE: return(INDEXEDA_IMAGE);
    case PSD_INDEXED_IMAGE: return(INDEXED_IMAGE);
    default: return(RGB_IMAGE);
    }
}



GLayerMode
psd_lmode_to_gimp_lmode (gchar modekey[4])
{
  if (strncmp(modekey, "norm", 4)==0) return(NORMAL_MODE);
  if (strncmp(modekey, "dark", 4)==0) return(DARKEN_ONLY_MODE);
  if (strncmp(modekey, "lite", 4)==0) return(LIGHTEN_ONLY_MODE);
  if (strncmp(modekey, "hue ", 4)==0) return(HUE_MODE);
  if (strncmp(modekey, "sat ", 4)==0) return(SATURATION_MODE);
  if (strncmp(modekey, "colr", 4)==0) return(COLOR_MODE);
  if (strncmp(modekey, "mul ", 4)==0) return(MULTIPLY_MODE);
  if (strncmp(modekey, "scrn", 4)==0) return(SCREEN_MODE);
  if (strncmp(modekey, "diss", 4)==0) return(DISSOLVE_MODE);
  if (strncmp(modekey, "diff", 4)==0) return(DIFFERENCE_MODE);

  if (strncmp(modekey, "lum ", 4)==0) return(VALUE_MODE);    /* ? */

  printf("PSD: Warning - unsupported layer-blend mode '%c%c%c%c', using 'addition' mode\n", modekey[0], modekey[1], modekey[2], modekey[3]);

427
  if (strncmp(modekey, "over", 4)==0) return(ADDITION_MODE); /* ? */
428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
  if (strncmp(modekey, "hLit", 4)==0) return(/**/ADDITION_MODE);
  if (strncmp(modekey, "sLit", 4)==0) return(/**/ADDITION_MODE);

  printf("PSD: Warning - UNKNOWN layer-blend mode, reverting to 'normal'\n");

  return(NORMAL_MODE);
}



GImageType
psd_type_to_gimp_base_type (psd_imagetype psdtype)
{
  switch(psdtype)
    {
    case PSD_RGBA_IMAGE:
    case PSD_RGB_IMAGE: return(RGB);
    case PSD_GRAYA_IMAGE:
    case PSD_GRAY_IMAGE: return(GRAY);
    case PSD_INDEXEDA_IMAGE:
    case PSD_INDEXED_IMAGE: return(INDEXED);
    default:
Manish Singh's avatar
Manish Singh committed
450
      g_message ("PSD: Error: Can't convert PSD imagetype to GIMP imagetype\n");
451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466
      gimp_quit();
      return(RGB);
    }
}



GImageType
psd_mode_to_gimp_base_type (gushort psdtype)
{
  switch(psdtype)
    {
    case 1: return(GRAY);
    case 2: return(INDEXED);
    case 3: return(RGB);
    default:
Manish Singh's avatar
Manish Singh committed
467
      g_message ("PSD: Error: Can't convert PSD mode to GIMP base imagetype\n");
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
      gimp_quit();
      return(RGB);
    }
}



static void
reshuffle_cmap(guchar *map256)
{
  guchar *tmpmap;
  int i;

  tmpmap = xmalloc(768);

  for (i=0;i<256;i++)
    {
      tmpmap[i*3  ] = map256[i];
      tmpmap[i*3+1] = map256[i+256];
      tmpmap[i*3+2] = map256[i+512];
    }

  for (i=0;i<768;i++)
    {
      map256[i] = tmpmap[i];
    }

  g_free(tmpmap);
}



static void
dispatch_resID(guint ID, FILE *fd, guint32 *offset, guint32 Size)
{
  if ( (ID < 0x0bb6) && (ID >0x07d0) )
    {
Manish Singh's avatar
Manish Singh committed
505
      IFDBG printf ("\t\tPath data is irrelevant to GIMP at this time.\n");
506 507 508 509 510 511 512 513 514 515
      throwchunk(Size, fd, "dispatch_res path throw");
      (*offset) += Size;
    }
  else
    switch (ID)
      {
      case 0x03ee:
	{
	  gint32 remaining = Size;
	  
Manish Singh's avatar
Manish Singh committed
516
	  IFDBG printf ("\t\tALPHA CHANNEL NAMES:\n");
517 518 519 520 521 522
	  if (Size > 0)
	    {
	      do
		{
		  psd_image.aux_channel[psd_image.num_aux_channels].name =
		    getpascalstring(fd, "alpha channel name");
Manish Singh's avatar
Manish Singh committed
523 524 525
		  (*offset)++;
		  remaining--;

526 527 528 529 530 531 532 533
		  if (psd_image.aux_channel[psd_image.num_aux_channels].name
		      == NULL)
		    {
		      IFDBG printf("\t\t\tNull channel name %d.\n",
				   psd_image.num_aux_channels);
		      fflush(stdout);
		    }

Manish Singh's avatar
Manish Singh committed
534 535 536
		  if (psd_image.aux_channel[psd_image.num_aux_channels].name)
		    {
		      guint32 alpha_name_len;
537
		  
Manish Singh's avatar
Manish Singh committed
538 539 540 541 542
		      alpha_name_len =
			strlen(psd_image.aux_channel[psd_image.num_aux_channels].name);
		      
		      IFDBG printf("\t\t\tname: \"%s\"\n",
				   psd_image.aux_channel[psd_image.num_aux_channels].name);
543
		  
Manish Singh's avatar
Manish Singh committed
544 545 546 547
		      (*offset) += alpha_name_len;
		      remaining -= alpha_name_len;
		    }

548
		  psd_image.num_aux_channels++;
549 550 551 552 553 554

		  if (psd_image.num_aux_channels > MAX_CHANNELS)
		    {
		      printf("\nPSD: Sorry - this image has too many aux channels.  Tell Adam!\n");
		      gimp_quit();
		    }
555 556 557 558 559 560 561 562 563
		}
	      while (remaining > 0);
	    }

	  if (remaining)
	    throwchunk(remaining, fd, "alphaname padding 0 throw");
	}
	break;
      case 0x03ef:
Manish Singh's avatar
Manish Singh committed
564 565 566
	IFDBG printf("\t\tDISPLAYINFO STRUCTURE: unhandled\n");
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
567 568 569 570
	break;
      case 0x03f0: /* FIXME: untested */
	{
	  psd_image.caption = getpascalstring(fd, "caption string");
Manish Singh's avatar
Manish Singh committed
571 572 573 574 575 576 577
	  (*offset)++;

	  if (psd_image.caption)
	    {
	      IFDBG printf("\t\t\tcontent: \"%s\"\n",psd_image.caption);
	      (*offset) += strlen(psd_image.caption);
	    }
578 579 580
	}
	break;
      case 0x03f2:
Manish Singh's avatar
Manish Singh committed
581
	IFDBG printf("\t\tBACKGROUND COLOR: unhandled\n");
582 583 584 585
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;	
      case 0x03f4:
Manish Singh's avatar
Manish Singh committed
586
	IFDBG printf("\t\tGREY/MULTICHANNEL HALFTONING INFO: unhandled\n");
587 588 589 590
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x03f5:
Manish Singh's avatar
Manish Singh committed
591
	IFDBG printf("\t\tCOLOUR HALFTONING INFO: unhandled\n");
592 593 594 595
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x03f6:
Manish Singh's avatar
Manish Singh committed
596
	IFDBG printf("\t\tDUOTONE HALFTONING INFO: unhandled\n");
597 598 599 600
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x03f7:
Manish Singh's avatar
Manish Singh committed
601
	IFDBG printf("\t\tGREYSCALE/MULTICHANNEL TRANSFER FUNCTION: unhandled\n");
602 603 604 605
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x03f8:
Manish Singh's avatar
Manish Singh committed
606
	IFDBG printf("\t\tCOLOUR TRANSFER FUNCTION: unhandled\n");
607 608 609 610
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x03f9:
Manish Singh's avatar
Manish Singh committed
611
	IFDBG printf("\t\tDUOTONE TRANSFER FUNCTION: unhandled\n");
612 613 614 615
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x03fa:
Manish Singh's avatar
Manish Singh committed
616
	IFDBG printf("\t\tDUOTONE IMAGE INFO: unhandled\n");
617 618 619 620
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x03fb:
Manish Singh's avatar
Manish Singh committed
621
	IFDBG printf("\t\tEFFECTIVE BLACK/WHITE VALUES: unhandled\n");
622 623 624 625
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x03fe:
Manish Singh's avatar
Manish Singh committed
626
	IFDBG printf("\t\tQUICK MASK INFO: unhandled\n");
627 628 629 630 631
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x0400:
	{
Manish Singh's avatar
Manish Singh committed
632
	  IFDBG printf("\t\tLAYER STATE INFO:\n");
633 634
	  psd_image.active_layer_num = getgshort(fd, "ID target_layer_num");

Manish Singh's avatar
Manish Singh committed
635
	  IFDBG printf("\t\t\ttarget: %d\n",(gint)psd_image.active_layer_num);
636 637 638 639
	  (*offset) += 2;
	}
	break;
      case 0x0402:
Manish Singh's avatar
Manish Singh committed
640 641
	IFDBG printf("\t\tLAYER GROUP INFO: unhandled\n");
	IFDBG printf("\t\t\t(Inferred number of layers: %d)\n",(gint)(Size/2));
642 643 644 645
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
      case 0x0405:
Manish Singh's avatar
Manish Singh committed
646
	IFDBG printf ("\t\tIMAGE MODE FOR RAW FORMAT: unhandled\n");
647 648 649 650 651 652 653 654 655 656 657 658 659 660
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;

      case 0x03e9:
      case 0x03ed:
      case 0x03f1:
      case 0x03f3:
      case 0x03fd:
      case 0x0401:
      case 0x0404:
      case 0x0406:
      case 0x0bb7:
      case 0x2710:
Manish Singh's avatar
Manish Singh committed
661
	IFDBG printf ("\t\t<Field is irrelevant to GIMP at this time.>\n");
662 663 664 665 666 667
	throwchunk(Size, fd, "dispatch_res");	
	(*offset) += Size;
	break;
	
      case 0x03e8:
      case 0x03eb:
Manish Singh's avatar
Manish Singh committed
668
	IFDBG printf ("\t\t<Obsolete Photoshop 2.0 field.>\n");
669 670 671 672 673 674 675
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
	
      case 0x03fc:
      case 0x03ff:
      case 0x0403:
Manish Singh's avatar
Manish Singh committed
676
	IFDBG printf ("\t\t<Obsolete field.>\n");
677 678 679 680 681
	throwchunk(Size, fd, "dispatch_res");
	(*offset) += Size;
	break;
	
      default:
Manish Singh's avatar
Manish Singh committed
682
	IFDBG printf ("\t\t<Undocumented field.>\n");
683
	dumpchunk(Size, fd, "dispatch_res");
684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699
	(*offset) += Size;
	break;
      }
}


static void
do_layer_record(FILE *fd, guint32 *offset, gint layernum)
{
  gint32 top, left, bottom, right;
  guint32 extradatasize, layermaskdatasize, layerrangesdatasize;
  guint32 totaloff;
  gchar sig[4];
  guchar flags;
  gint i;

Manish Singh's avatar
Manish Singh committed
700
  IFDBG printf("\t\t\tLAYER RECORD (layer %d)\n", (int)layernum);
701 702


703 704 705 706 707 708 709 710 711
  /* table 11-12 */
  top = getglong (fd, "layer top");
  (*offset)+=4;
  left = getglong (fd, "layer left");
  (*offset)+=4;
  bottom = getglong (fd, "layer bottom");
  (*offset)+=4;
  right = getglong (fd, "layer right");
  (*offset)+=4;
712 713 714 715 716 717

  psd_image.layer[layernum].x = left;
  psd_image.layer[layernum].y = top;
  psd_image.layer[layernum].width = right-left;
  psd_image.layer[layernum].height = bottom-top;
  
Manish Singh's avatar
Manish Singh committed
718
  IFDBG printf("\t\t\t\tLayer extents: (%d,%d) -> (%d,%d)\n",left,top,right,bottom);
719 720 721 722
  
  psd_image.layer[layernum].num_channels =
    getgshort (fd, "layer num_channels");
  (*offset)+=2;
723 724 725

  if (psd_image.layer[layernum].num_channels > MAX_CHANNELS)
    {
Manish Singh's avatar
Manish Singh committed
726
      g_message ("\nPSD: Sorry - this image has too many channels.  Tell Adam!\n");
727 728
      gimp_quit();
    }
729
  
Manish Singh's avatar
Manish Singh committed
730
  IFDBG printf("\t\t\t\tNumber of channels: %d\n",
731 732 733 734
	 (int)psd_image.layer[layernum].num_channels);

  for (i=0;i<psd_image.layer[layernum].num_channels;i++)
    {
735
      /* table 11-13 */
Manish Singh's avatar
Manish Singh committed
736
      IFDBG printf("\t\t\t\tCHANNEL LENGTH INFO (%d)\n", i);
737 738 739

      psd_image.layer[layernum].channel[i].type	= getgshort(fd, "channel id");
      (*offset)+=2;
Manish Singh's avatar
Manish Singh committed
740
      IFDBG printf("\t\t\t\t\tChannel TYPE: %d\n",
741 742 743 744 745
	     psd_image.layer[layernum].channel[i].type);

      psd_image.layer[layernum].channel[i].compressedsize =
	getglong(fd, "channeldatalength");
      (*offset)+=4;
Manish Singh's avatar
Manish Singh committed
746
      IFDBG printf("\t\t\t\t\tChannel Data Length: %d\n",
747 748 749 750 751 752 753 754
	     psd_image.layer[layernum].channel[i].compressedsize);
    }

  xfread(fd, sig, 4, "layer blend sig");
  (*offset)+=4;
  
  if (strncmp(sig, "8BIM", 4)!=0)
    {
Manish Singh's avatar
Manish Singh committed
755
      g_message ("PSD: Error - layer blend signature is incorrect. :-(\n");
756 757 758 759 760 761
      gimp_quit();
    }

  xfread(fd, psd_image.layer[layernum].blendkey, 4, "layer blend key");
  (*offset)+=4;

Manish Singh's avatar
Manish Singh committed
762
  IFDBG printf("\t\t\t\tBlend type: PSD(\"%c%c%c%c\") = GIMP(%d)\n",
763 764 765 766 767 768 769 770 771
	 psd_image.layer[layernum].blendkey[0],
	 psd_image.layer[layernum].blendkey[1],
	 psd_image.layer[layernum].blendkey[2],
	 psd_image.layer[layernum].blendkey[3],
	 psd_lmode_to_gimp_lmode(psd_image.layer[layernum].blendkey));

  psd_image.layer[layernum].opacity = getguchar(fd, "layer opacity");
  (*offset)++;

Manish Singh's avatar
Manish Singh committed
772
  IFDBG printf("\t\t\t\tLayer Opacity: %d\n", psd_image.layer[layernum].opacity);
773 774 775 776

  psd_image.layer[layernum].clipping = getguchar(fd, "layer clipping");
  (*offset)++;

Manish Singh's avatar
Manish Singh committed
777
  IFDBG printf("\t\t\t\tLayer Clipping: %d (%s)\n",
778 779 780 781 782 783
	 psd_image.layer[layernum].clipping,
	 psd_image.layer[layernum].clipping==0?"base":"non-base");

  flags = getguchar(fd, "layer flags");
  (*offset)++;

Manish Singh's avatar
Manish Singh committed
784
  IFDBG printf("\t\t\t\tLayer Flags: %d (%s, %s)\n", flags,
785 786 787 788 789 790 791 792 793 794 795
	 flags&1?"preserve transparency":"don't preserve transparency",
	 flags&2?"visible":"not visible");

  psd_image.layer[layernum].protecttrans = (flags&1) ? TRUE : FALSE;
  psd_image.layer[layernum].visible = (flags&2) ? FALSE : TRUE;

  getguchar(fd, "layer record filler");
  (*offset)++;

  extradatasize = getglong(fd, "layer extra data size");
  (*offset)+=4;
Manish Singh's avatar
Manish Singh committed
796
  IFDBG printf("\t\t\t\tEXTRA DATA SIZE: %d\n",extradatasize);
797 798 799 800 801 802 803 804 805 806

  /* FIXME: should do something with this data */
  /*throwchunk(extradatasize, fd, "layer extradata throw");
  (*offset) += extradatasize;*/

  totaloff = (*offset) + extradatasize;

  /* table 11-14 */
  layermaskdatasize = getglong(fd, "layer mask data size");
  (*offset)+=4;
Manish Singh's avatar
Manish Singh committed
807
  IFDBG printf("\t\t\t\t\tLAYER MASK DATA SIZE: %d\n",layermaskdatasize);
808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834
  
  if (layermaskdatasize)
    {
      top    = getglong(fd, "lmask top");
      (*offset) += 4;
      left   = getglong(fd, "lmask left");
      (*offset) += 4;
      bottom = getglong(fd, "lmask bottom");
      (*offset) += 4;
      right  = getglong(fd, "lmask right");
      (*offset) += 4;

      psd_image.layer[layernum].lm_x = left;
      psd_image.layer[layernum].lm_y = top;
      psd_image.layer[layernum].lm_width = right-left;
      psd_image.layer[layernum].lm_height = bottom-top;

      getglong(fd, "lmask data throw");
      (*offset) += 4;

      /*      throwchunk(layermaskdatasize, fd, "layer mask data throw");
      (*offset) += layermaskdatasize;*/
    }


  layerrangesdatasize = getglong(fd, "layer ranges data size");
  (*offset)+=4;
Manish Singh's avatar
Manish Singh committed
835
  IFDBG printf("\t\t\t\t\t\tLAYER RANGES DATA SIZE: %d\n",layermaskdatasize);
836 837 838 839 840 841 842 843
  
  if (layerrangesdatasize)
    {
      throwchunk(layerrangesdatasize, fd, "layer ranges data throw");
      (*offset) += layerrangesdatasize;
    }

  psd_image.layer[layernum].name = getpascalstring(fd, "layer name");
Manish Singh's avatar
Manish Singh committed
844
  (*offset)++;
845

Manish Singh's avatar
Manish Singh committed
846 847 848 849 850
  if (psd_image.layer[layernum].name)
    {
      (*offset) += strlen(psd_image.layer[layernum].name);
      IFDBG printf("\t\t\t\t\t\tLAYER NAME: '%s'\n",psd_image.layer[layernum].name);
    }
851
  
852 853
  if (totaloff-(*offset) > 0)
    {
Manish Singh's avatar
Manish Singh committed
854 855 856 857 858 859 860 861 862
      IFDBG 
	{
	  printf("Warning: layer record dross: ");
	  dumpchunk(totaloff-(*offset), fd, "layer record dross throw");
	}
	else
	{
	  throwchunk(totaloff-(*offset), fd, "layer record dross throw");
	}
863 864
      (*offset) = totaloff;
    }
865 866 867 868 869 870 871 872
}


static void
do_layer_struct(FILE *fd, guint32 *offset)
{
  gint i;

Manish Singh's avatar
Manish Singh committed
873
  IFDBG printf("\t\tLAYER STRUCTURE SECTION\n");
874 875 876 877
  
  psd_image.num_layers = getgshort(fd, "layer struct numlayers");
  (*offset)+=2;

Manish Singh's avatar
Manish Singh committed
878
  IFDBG printf("\t\t\tCanonical number of layers: %d%s\n",
879 880 881 882 883 884 885 886 887 888 889 890 891 892
	 psd_image.num_layers>0?
	 (int)psd_image.num_layers:abs(psd_image.num_layers),
	 psd_image.num_layers>0?"":" (absolute/alpha)");

  if (psd_image.num_layers<0)
    {
      psd_image.num_layers = -psd_image.num_layers;
      psd_image.absolute_alpha = TRUE;
    }
  else
    {
      psd_image.absolute_alpha = FALSE;
    }

893 894
  if (psd_image.num_layers > MAX_LAYERS)
    {
Manish Singh's avatar
Manish Singh committed
895
      g_message ("\nPSD: Sorry - this image has too many layers.  Tell Adam!\n");
896 897 898
      gimp_quit();
    }

899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936
  for (i=0; i<psd_image.num_layers; i++)
    {
      do_layer_record(fd, offset, i);
    }
}


static void
do_layer_pixeldata(FILE *fd, guint32 *offset)
{
  guint16 compression;
  gint layeri, channeli;
  guchar *tmpline;

  for (layeri=0; layeri<psd_image.num_layers; layeri++)
    {
      tmpline = xmalloc(psd_image.layer[layeri].width + 1);

      for (channeli=0;
	   channeli<psd_image.layer[layeri].num_channels;
	   channeli++)
	{
	  int width, height;

	  if (psd_image.layer[layeri].channel[channeli].type == -2)
	    {
	      width = psd_image.layer[layeri].lm_width;
	      height = psd_image.layer[layeri].lm_height;
	    }
	  else
	    {
	      width = psd_image.layer[layeri].width;
	      height = psd_image.layer[layeri].height;
	    }

	  compression = getgshort(fd, "layer channel compression type");
	  (*offset)+=2;
	      
Manish Singh's avatar
Manish Singh committed
937 938 939 940 941 942 943 944 945
	  IFDBG
	    printf("\t\t\tLayer (%d) Channel (%d:%d) Compression: %d (%s)\n",
		   layeri,
		   channeli,
		   psd_image.layer[layeri].channel[channeli].type,
		   compression,
		   compression==0?"raw":(compression==1?"RLE":"UNKNOWN!"));
	  
	  IFDBG printf("\t\t\t\tLoading channel data (%d bytes)...\n",
946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990
		 width*height);
	      
	  psd_image.layer[layeri].channel[channeli].data =
	    xmalloc (width * height);
	      
	  switch (compression)
	    {
	    case 0: /* raw data */
	      {
		/* FIXME: only lightly tested */
		gint linei;
		    
		for (linei=0;
		     linei<height;
		     linei++)
		  {
		    xfread(fd,
			   (psd_image.layer[layeri].channel[channeli].data+
			    linei * width),
			   width,
			   "raw channel line");
		    (*offset) += width;
		  }

		/* Pad raw data to multiple of 2? */
#if 0
		if ((height *
		     width) & 1)
		  {
		    getguchar(fd, "raw channel padding");
		    (*offset)++;
		  }
#endif
	      }
	      break;
	    case 1: /* RLE, one row at a time, padded to an even width */
	      {
		gint linei;
		gint blockread;
		    
		/* we throw this away because in theory we can trust the
		   data to unpack to the right length... hmm... */
		throwchunk(height * 2,
			   fd, "widthlist");
		(*offset) += height * 2;
991

992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008
		blockread = (*offset);
		    
		for (linei=0;
		     linei<height;
		     linei++)
		  {
		    /*printf(" %d ", *offset);*/
		    unpack_pb_channel(fd, tmpline,
				      width 
				      /*(width&1)*/,
				      offset);
		    memcpy((psd_image.layer[layeri].channel[channeli].data+
			    linei * width),
			   tmpline,
			   width);
		  }
		    
Manish Singh's avatar
Manish Singh committed
1009
		IFDBG printf("\t\t\t\t\tActual compressed size was %d bytes\n",
1010 1011 1012 1013
		       (*offset)-blockread);
	      }
	      break;
	    default: /* *unknown* */
Manish Singh's avatar
Manish Singh committed
1014
	      g_message ("*** Unknown compression type in channel.\n");
1015 1016 1017 1018 1019 1020 1021
	      gimp_quit();
	      break;
	    }
	}
	  
      g_free(tmpline);
    }
1022 1023 1024

  /*  printf("\n[[%ld]]\n", getglong(fd, "uhhhh"));
  (*offset)+=4;*/
1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035
}


static void
do_layers(FILE *fd, guint32 *offset)
{
  guint32 section_length;

  section_length = getglong(fd, "layerinfo sectionlength");
  (*offset)+=4;

Manish Singh's avatar
Manish Singh committed
1036 1037
  IFDBG printf("\tLAYER INFO SECTION\n");
  IFDBG printf("\t\tSECTION LENGTH: %u\n",section_length);
1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052
  
  do_layer_struct(fd, offset);

  do_layer_pixeldata(fd, offset);
}



static void
do_layer_and_mask(FILE *fd)
{
  guint32 offset = 0;
  guint32 Size = PSDheader.miscsizelen;


1053 1054 1055
  guint32 offset_now = ftell(fd);


Manish Singh's avatar
Manish Singh committed
1056 1057
  IFDBG printf("LAYER AND MASK INFO\n");
  IFDBG printf("\tSECTION LENGTH: %u\n",Size);
1058 1059 1060 1061 1062

  if (Size == 0) return;

  do_layers(fd, &offset);

1063

1064 1065
  if (offset < Size)
    {
Manish Singh's avatar
Manish Singh committed
1066 1067 1068 1069 1070 1071 1072 1073 1074
      IFDBG
	{
	  printf("PSD: Supposedly there are %d bytes of mask info left.\n",
		 Size-offset);
	  if ((Size-offset == 4) || (Size-offset == 24))
	    printf("     That sounds good to me.\n");
	  else
	    printf("     That sounds strange to me.\n");
	}
1075 1076


1077
      /*      if ((getguchar(fd, "mask info throw")!=0) ||
1078 1079 1080 1081 1082
	  (getguchar(fd, "mask info throw")!=0) ||
	  (getguchar(fd, "mask info throw")!=0) ||
	  (getguchar(fd, "mask info throw")!=0))
	{
	  printf("*** This mask info block looks pretty bogus.\n");
1083
	}*/
1084 1085 1086
    }
  else
    printf("PSD: Stern warning - no mask info.\n");
1087 1088 1089 1090


  /* If 'offset' wasn't being buggily updated, we wouldn't need this. */
  fseek(fd, Size+offset_now, SEEK_SET);
1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103
}



static void
do_image_resources(FILE *fd)
{
  guint16 ID;
  gchar *Name;
  guint32 Size;

  guint32 offset = 0;

Manish Singh's avatar
Manish Singh committed
1104
  IFDBG printf("IMAGE RESOURCE BLOCK:\n");
1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123

  /* FIXME: too trusting that the file isn't corrupt */
  while (offset < PSDheader.imgreslen-1)
    {
      gchar sig[4];
      
      xfread(fd, sig, 4, "imageresources signature");

      if (strncmp(sig, "8BIM", 4) != 0)
	{
	  printf("PSD: Error - imageresources block has invalid signature.\n");
	  gimp_quit();
	}
      offset += 4;

      /* generic information about a block ID */


      ID = getgshort(fd, "ID num");
Manish Singh's avatar
Manish Singh committed
1124 1125
      offset += 2;
      IFDBG printf("\tID: 0x%04x / ",ID);
1126 1127 1128


      Name = getpascalstring(fd, "ID name");
Manish Singh's avatar
Manish Singh committed
1129
      offset++;
1130

Manish Singh's avatar
Manish Singh committed
1131
      if (Name)
1132
	{
Manish Singh's avatar
Manish Singh committed
1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146
	  IFDBG printf("\"%s\" ", Name);
	  offset += strlen(Name);

	  if (!(strlen(Name)&1))
	    {
	      throwchunk(1, fd, "ID name throw");
	      offset ++;
	    }
	  g_free(Name);
	}
      else
	{
	  throwchunk(1, fd, "ID name throw2");
	  offset++;
1147 1148 1149
	}

      Size = getglong(fd, "ID Size");
Manish Singh's avatar
Manish Singh committed
1150 1151
      offset += 4;
      IFDBG printf("Size: %d\n", Size);
1152 1153 1154 1155 1156

      dispatch_resID(ID, fd, &offset, Size);

      if (Size&1)
	{
Manish Singh's avatar
Manish Singh committed
1157
	  IFDBG printf("+1");
1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290
	  throwchunk(1, fd, "ID content throw");
	  offset ++;
	}
    }

  /*  if (offset != PSDheader.imgreslen)
    {
      printf("\tSucking imageres byte...\n");
      throwchunk(1, fd, "imageres suck");
      offset ++;
    }*/

}


static
guchar* chans_to_GRAYA (guchar* grey, guchar* alpha, gint numpix)
{
  guchar* rtn;
  int i; /* clearly, 'i' stands for 'Imaginative loop variable' */

  if ((grey==NULL)||(alpha==NULL))
    {
      printf("NULL channel - eep!");
      return NULL;
    }

  rtn = xmalloc(numpix * 2);

  for (i=0; i<numpix; i++)
    {
      rtn[i*2  ] = grey[i];
      rtn[i*2+1] = alpha[i];
    }

  return (rtn);
}


static
guchar* chans_to_RGB (guchar* red, guchar* green, guchar* blue, gint numpix)
{
  guchar* rtn;
  int i;

  if ((red==NULL)||(green==NULL)||(blue==NULL))
    {
      printf("NULL channel - eep!");
      return NULL;
    }

  rtn = xmalloc(numpix * 3);

  for (i=0; i<numpix; i++)
    {
      rtn[i*3  ] = red[i];
      rtn[i*3+1] = green[i];
      rtn[i*3+2] = blue[i];
    }

  return (rtn);
}



static
guchar* chans_to_RGBA (guchar* red, guchar* green, guchar* blue,
		       guchar* alpha,
		       gint numpix)
{
  guchar* rtn;
  int i;
  gboolean careful = FALSE;

  if ((red==NULL)||(green==NULL)||(blue==NULL)||(alpha==NULL))
    {
      printf("chans_to_RGBA : NULL channel - eep!");
      careful = TRUE;
    }

  rtn = xmalloc(numpix * 4);

  if (!careful)
    {
      for (i=0; i<numpix; i++)
	{
	  rtn[i*4  ] = red[i];
	  rtn[i*4+1] = green[i];
	  rtn[i*4+2] = blue[i];
	  rtn[i*4+3] = alpha[i];
	}
    }
  else
    {
      for (i=0; i<numpix; i++)
	{
	  rtn[i*4  ] = (red==NULL) ? 0 : red[i];
	  rtn[i*4+1] = (green==NULL) ? 0 : green[i];
	  rtn[i*4+2] = (blue==NULL) ? 0 : blue[i];
	  rtn[i*4+3] = (alpha==NULL) ? 0 : alpha[i];
	}
    }

  return (rtn);
}


static
gboolean psd_layer_has_alpha(PSDlayer* layer)
{
  int i;

  for (i=0; i<layer->num_channels; i++)
    {
      if (layer->channel[i].type == -1)
	{
	  return TRUE;
	}
    }

  return FALSE;
}


static
void extract_data_and_channels(guchar* src, gint gimpstep, gint psstep,
			       gint32 image_ID, GDrawable* drawable,
			       gint width, gint height)
{
  guchar* primary_data;
  guchar* aux_data;
  GPixelRgn pixel_rgn;

Manish Singh's avatar
Manish Singh committed
1291
  IFDBG printf("Extracting primary channel data (%d channels)\n"
1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355
	 "\tand %d auxiliary channels.\n", gimpstep, psstep-gimpstep);

  primary_data = xmalloc(width * height * gimpstep);
  {
    int pix,chan;

    for (pix=0; pix<width*height; pix++)
      {
	for (chan=0; chan<gimpstep; chan++)
	  {
	    primary_data [pix*gimpstep + chan] =
	      src [pix*psstep + chan];
	  }
      }
    
    gimp_pixel_rgn_init (&pixel_rgn, drawable,
			 0, 0, drawable->width, drawable->height,
			 TRUE, FALSE);
    gimp_pixel_rgn_set_rect (&pixel_rgn, primary_data,
			     0, 0, drawable->width, drawable->height);    
  
    gimp_drawable_flush (drawable);
    gimp_drawable_detach (drawable);
  }
  g_free(primary_data);


  aux_data = xmalloc(width * height);
  {
    int pix, chan;
    gint32 channel_ID;
    GDrawable* chdrawable;
    guchar colour[3]= {0, 0, 0};


    for (chan=gimpstep; chan<psstep; chan++)
      {
	for (pix=0; pix<width*height; pix++)
	  {
	    aux_data [pix] =
	      src [pix*psstep + chan];
	  }
	
	channel_ID = gimp_channel_new(image_ID,
				      psd_image.aux_channel[chan-gimpstep].name,
				      width, height,
				      100.0, colour);
	gimp_image_add_channel(image_ID, channel_ID, 0);
	gimp_channel_set_visible(channel_ID, FALSE);

	chdrawable = gimp_drawable_get(channel_ID);

	gimp_pixel_rgn_init (&pixel_rgn, chdrawable,
			     0, 0, chdrawable->width, chdrawable->height,
			     TRUE, FALSE);
	gimp_pixel_rgn_set_rect (&pixel_rgn, aux_data,
				 0, 0, chdrawable->width, chdrawable->height);
	
	gimp_drawable_flush (chdrawable);
	gimp_drawable_detach (chdrawable);
      }
  }
  g_free(aux_data);

Manish Singh's avatar
Manish Singh committed
1356
  IFDBG printf("Done with that.\n\n");
1357 1358 1359
}


1360 1361 1362 1363 1364 1365 1366 1367
static
void extract_channels(guchar* src, gint num_wanted, gint psstep,
		      gint32 image_ID,
		      gint width, gint height)
{
  guchar* aux_data;
  GPixelRgn pixel_rgn;

Manish Singh's avatar
Manish Singh committed
1368
  IFDBG printf("Extracting %d/%d auxiliary channels.\n", num_wanted, psstep);
1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405

  aux_data = xmalloc(width * height);
  {
    int pix, chan;
    gint32 channel_ID;
    GDrawable* chdrawable;
    guchar colour[3]= {0, 0, 0};

    for (chan=psstep-num_wanted; chan<psstep; chan++)
      {
	for (pix=0; pix<width*height; pix++)
	  {
	    aux_data [pix] =
	      src [pix*psstep + chan];
	  }
	
	channel_ID = gimp_channel_new(image_ID,
				      psd_image.aux_channel[chan-(psstep-num_wanted)].name,
				      width, height,
				      100.0, colour);
	gimp_image_add_channel(image_ID, channel_ID, 0);
	gimp_channel_set_visible(channel_ID, FALSE);

	chdrawable = gimp_drawable_get(channel_ID);

	gimp_pixel_rgn_init (&pixel_rgn, chdrawable,
			     0, 0, chdrawable->width, chdrawable->height,
			     TRUE, FALSE);
	gimp_pixel_rgn_set_rect (&pixel_rgn, aux_data,
				 0, 0, chdrawable->width, chdrawable->height);
	
	gimp_drawable_flush (chdrawable);
	gimp_drawable_detach (chdrawable);
      }
  }
  g_free(aux_data);

Manish Singh's avatar
Manish Singh committed
1406
  IFDBG printf("Done with that.\n\n");
1407 1408 1409
}


1410 1411 1412 1413 1414 1415 1416 1417
static void
resize_mask(guchar* src, guchar* dest,
	    gint32 src_x, gint32 src_y,
	    gint32 src_w, gint32 src_h,
	    gint32 dest_w, gint32 dest_h)
{
  int x,y;

Manish Singh's avatar
Manish Singh committed
1418
  IFDBG printf("--> %p %p : %d %d . %d %d . %d %d\n",
1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435
	 src, dest,
	 src_x, src_y,
	 src_w, src_h,
	 dest_w, dest_h);

  for (y=0; y<dest_h; y++)
    {
      for (x=0; x<dest_w; x++)
	{
	  if ((x>src_x) && (x<src_x+src_w) &&
	      (y>src_y) && (y<src_y+src_h))
	    {
	      dest[dest_w * y + x] =
		src[src_w * (y-src_y) + (x-src_x)];
	    }
	  else
	    {
1436
	      dest[dest_w * y + x] = 255;
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446
	    }
	}
    }
}


static gint32
load_image(char *name)
{
  FILE *fd;
1447
  gboolean want_aux;
Manish Singh's avatar
Manish Singh committed
1448 1449
  char *name_buf;
  guchar *cmykbuf;
1450
  static int number = 1;
Manish Singh's avatar
Manish Singh committed
1451
  guchar *dest, *temp;
1452
  long channels, nguchars;
1453 1454 1455 1456
  psd_imagetype imagetype;
  int cmyk = 0, step = 1;
  gint32 image_ID = -1;
  gint32 layer_ID = -1;
1457
  GDrawable *drawable = NULL;
1458 1459 1460 1461
  GPixelRgn pixel_rgn;
  gint32 iter;

    
Manish Singh's avatar
Manish Singh committed
1462
  IFDBG printf("------- %s ---------------------------------\n",name);
1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507


  name_buf = xmalloc(strlen(name) + 11);
  if (number > 1)
    sprintf (name_buf, "%s-%d", name, number);
  else
    sprintf (name_buf, "%s", name);
  sprintf(name_buf, "Loading %s:", name);

  gimp_progress_init(name_buf);

  fd = fopen(name, "rb");
  if (fd==NULL) {
    printf("%s: can't open \"%s\"\n", prog_name, name);
    return(-1);
  }





  read_whole_file(fd);






  if (psd_image.num_layers > 0) /* PS3-style */
    {
      int lnum;
      GImageType gimagetype;

      gimagetype = psd_mode_to_gimp_base_type(PSDheader.mode);
      image_ID =
	gimp_image_new (PSDheader.columns, PSDheader.rows, gimagetype);
      gimp_image_set_filename (image_ID, name);
      
      for (lnum=0; lnum<psd_image.num_layers; lnum++)
	{
	  gint numc;
	  guchar* merged_data = NULL;

	  numc = psd_image.layer[lnum].num_channels;

Manish Singh's avatar
Manish Singh committed
1508
	  IFDBG printf("Hey, it's a LAYER with %d channels!\n", numc);
1509 1510 1511 1512 1513
	  
	  switch (gimagetype)
	    {
	    case GRAY:
	      {
Manish Singh's avatar
Manish Singh committed
1514
		IFDBG printf("It's GRAY.\n");
1515 1516 1517
		if (!psd_layer_has_alpha(&psd_image.layer[lnum]))
		  {
		    merged_data = xmalloc(psd_image.layer[lnum].width *
1518
					  psd_image.layer[lnum].height);
1519 1520 1521
		    memcpy(merged_data, psd_image.layer[lnum].channel[0].data,
			   psd_image.layer[lnum].width *
			   psd_image.layer[lnum].height);
Manish Singh's avatar
Manish Singh committed
1522 1523 1524

		    if (psd_image.layer[lnum].channel[0].data)
		      g_free(psd_image.layer[lnum].channel[0].data);
1525 1526 1527 1528 1529 1530 1531 1532
		  }
		else
		  {
		    merged_data =
		      chans_to_GRAYA (psd_image.layer[lnum].channel[1].data,
				      psd_image.layer[lnum].channel[0].data,
				      psd_image.layer[lnum].width *
				      psd_image.layer[lnum].height);
Manish Singh's avatar
Manish Singh committed
1533 1534 1535 1536 1537

		    if (psd_image.layer[lnum].channel[0].data)
		      g_free(psd_image.layer[lnum].channel[0].data);
		    if (psd_image.layer[lnum].channel[1].data)
		      g_free(psd_image.layer[lnum].channel[1].data);
1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550
		  }
		  
		layer_ID = gimp_layer_new (image_ID,
					   psd_image.layer[lnum].name,
					   psd_image.layer[lnum].width,
					   psd_image.layer[lnum].height,
					   (numc==1) ? GRAY_IMAGE:GRAYA_IMAGE,
					   (100.0*(double)psd_image.layer[lnum].opacity)/255.0,
					   psd_lmode_to_gimp_lmode(psd_image.layer[lnum].blendkey));

	      }; break; /* case GRAY */
	    case RGB:
	      {
Manish Singh's avatar
Manish Singh committed
1551
		IFDBG printf("It's RGB.\n");
1552 1553 1554 1555 1556 1557 1558 1559
		if (!psd_layer_has_alpha(&psd_image.layer[lnum]))
		  {
		    merged_data =
		      chans_to_RGB (psd_image.layer[lnum].channel[0].data,
				    psd_image.layer[lnum].channel[1].data,
				    psd_image.layer[lnum].channel[2].data,
				    psd_image.layer[lnum].width *
				    psd_image.layer[lnum].height);
Manish Singh's avatar
Manish Singh committed
1560 1561 1562 1563 1564 1565 1566

		    if (psd_image.layer[lnum].channel[0].data)
		      g_free(psd_image.layer[lnum].channel[0].data);
		    if (psd_image.layer[lnum].channel[1].data)
		      g_free(psd_image.layer[lnum].channel[1].data);
		    if (psd_image.layer[lnum].channel[2].data)
		      g_free(psd_image.layer[lnum].channel[2].data);
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576
		  }
		else
		  {
		    merged_data =
		      chans_to_RGBA (psd_image.layer[lnum].channel[1].data,
				     psd_image.layer[lnum].channel[2].data,
				     psd_image.layer[lnum].channel[3].data,
				     psd_image.layer[lnum].channel[0].data,
				     psd_image.layer[lnum].width *
				     psd_image.layer[lnum].height);
Manish Singh's avatar
Manish Singh committed
1577 1578 1579 1580 1581 1582 1583 1584 1585

		    if (psd_image.layer[lnum].channel[0].data)
		      g_free(psd_image.layer[lnum].channel[0].data);
		    if (psd_image.layer[lnum].channel[1].data)
		      g_free(psd_image.layer[lnum].channel[1].data);
		    if (psd_image.layer[lnum].channel[2].data)
		      g_free(psd_image.layer[lnum].channel[2].data);
		    if (psd_image.layer[lnum].channel[3].data)
		      g_free(psd_image.layer[lnum].channel[3].data);
1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630
		  }
		  
		layer_ID = gimp_layer_new (image_ID,
					   psd_image.layer[lnum].name,
					   psd_image.layer[lnum].width,
					   psd_image.layer[lnum].height,
					   (numc==3) ? RGB_IMAGE:RGBA_IMAGE,
					   (100.0*(double)psd_image.layer[lnum].opacity)/255.0,
					   psd_lmode_to_gimp_lmode(psd_image.layer[lnum].blendkey));

	      }; break; /* case RGB */
	    default:
	      {
		printf("Error: Sorry, can't deal with a layered image of this type.\n");
		gimp_quit();
	      }; break; /* default */
	    }


	  gimp_image_add_layer (image_ID, layer_ID, 0);


	  /* Do a layer mask if it exists */
	  for (iter=0; iter<psd_image.layer[lnum].num_channels; iter++)
	    {
	      if (psd_image.layer[lnum].channel[iter].type == -2) /* is mask */
		{
		  gint32 mask_id;
		  guchar* lm_data;

		  lm_data = xmalloc(psd_image.layer[lnum].width *
				    psd_image.layer[lnum].height);
		  {
		    /* PS layer masks can be a different size to