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PIKApp/plug-ins/file-psd/psd-load.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* PIKA PSD Plug-in
* Copyright 2007 by John Marshall
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <errno.h>
#include <glib/gstdio.h>
#include <zlib.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include "psd.h"
#include "psd-util.h"
#include "psd-image-res-load.h"
#include "psd-layer-res-load.h"
#include "psd-load.h"
#include "libpika/stdplugins-intl.h"
#define COMP_MODE_SIZE sizeof(guint16)
/* Local function prototypes */
static gint read_header_block (PSDimage *img_a,
GInputStream *input,
GError **error);
static gint read_color_mode_block (PSDimage *img_a,
GInputStream *input,
GError **error);
static gint read_image_resource_block (PSDimage *img_a,
GInputStream *input,
GError **error);
static PSDlayer ** read_layer_block (PSDimage *img_a,
GInputStream *input,
GError **error);
static PSDlayer ** read_layer_info (PSDimage *img_a,
GInputStream *input,
GError **error);
static gint read_merged_image_block (PSDimage *img_a,
GInputStream *input,
GError **error);
static PikaImage * create_pika_image (PSDimage *img_a,
GFile *file);
static gint add_color_map (PikaImage *image,
PSDimage *img_a);
static gint add_image_resources (PikaImage *image,
PSDimage *img_a,
GInputStream *input,
gboolean *resolution_loaded,
gboolean *profile_loaded,
GError **error);
static gint add_layers (PikaImage *image,
PSDimage *img_a,
PSDlayer **lyr_a,
GInputStream *input,
GError **error);
static gint add_merged_image (PikaImage *image,
PSDimage *img_a,
GInputStream *input,
GError **error);
/* Local utility function prototypes */
static PikaLayer * add_clipping_group (PikaImage *image,
PikaLayer *parent);
static gchar * get_psd_color_mode_name (PSDColorMode mode);
static void psd_to_pika_color_map (guchar *map256);
static PikaImageType get_pika_image_type (PikaImageBaseType image_base_type,
gboolean alpha);
static void free_lyr_a (PSDlayer **lyr_a,
gint layer_count);
static void free_lyr_chn (PSDchannel **lyr_chn,
gint channel_count);
static gboolean read_RLE_channel (PSDimage *img_a,
PSDchannel *lyr_chn,
guint64 channel_data_len,
GInputStream *input,
GError **error);
static gint read_channel_data (PSDchannel *channel,
guint16 bps,
guint16 compression,
const guint32 *rle_pack_len,
GInputStream *input,
guint32 comp_len,
GError **error);
static void decode_32_bit_predictor (gchar *src,
gchar *dst,
guint32 rows,
guint32 columns);
static void convert_1_bit (const gchar *src,
gchar *dst,
guint32 rows,
guint32 columns);
static const Babl* get_layer_format (PSDimage *img_a,
gboolean alpha);
static const Babl* get_channel_format (PSDimage *img_a);
static const Babl* get_mask_format (PSDimage *img_a);
static void initialize_unsupported (PSDSupport *supported_features);
/* Main file load function */
PikaImage *
load_image (GFile *file,
gboolean merged_image_only,
gboolean *resolution_loaded,
gboolean *profile_loaded,
PSDSupport *unsupported_features,
GError **load_error)
{
GInputStream *input;
PSDimage img_a;
PSDlayer **lyr_a;
PikaImage *image = NULL;
GError *error = NULL;
img_a.ibm_pc_format = FALSE;
img_a.cmyk_transform = img_a.cmyk_transform_alpha = NULL;
img_a.cmyk_profile = NULL;
initialize_unsupported (unsupported_features);
img_a.unsupported_features = unsupported_features;
/* ----- Open PSD file ----- */
input = G_INPUT_STREAM (g_file_read (file, NULL, &error));
if (! input)
{
if (! error)
g_set_error (load_error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for reading: %s"),
pika_file_get_utf8_name (file), g_strerror (errno));
else
{
g_set_error (load_error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Could not open '%s' for reading: %s"),
pika_file_get_utf8_name (file), error->message);
g_error_free (error);
}
return NULL;
}
pika_progress_init_printf (_("Opening '%s'"),
pika_file_get_utf8_name (file));
IFDBG(1) g_debug ("Open file %s", pika_file_get_utf8_name (file));
img_a.merged_image_only = merged_image_only;
/* ----- Read the PSD file Header block ----- */
IFDBG(2) g_debug ("Read header block at offset %" G_GOFFSET_FORMAT,
PSD_TELL(input));
if (read_header_block (&img_a, input, &error) < 0)
goto load_error;
pika_progress_update (0.1);
/* ----- Read the PSD file Color Mode block ----- */
IFDBG(2) g_debug ("Read color mode block at offset %" G_GOFFSET_FORMAT,
PSD_TELL(input));
if (read_color_mode_block (&img_a, input, &error) < 0)
goto load_error;
pika_progress_update (0.2);
/* ----- Read the PSD file Image Resource block ----- */
IFDBG(2) g_debug ("Read image resource block at offset %" G_GOFFSET_FORMAT,
PSD_TELL(input));
if (read_image_resource_block (&img_a, input, &error) < 0)
goto load_error;
pika_progress_update (0.3);
/* ----- Read the PSD file Layer & Mask block ----- */
IFDBG(2) g_debug ("Read layer & mask block at offset %" G_GOFFSET_FORMAT,
PSD_TELL(input));
img_a.mask_layer_len = 0;
lyr_a = read_layer_block (&img_a, input, &error);
if (merged_image_only)
{
if (error)
{
g_debug ("Error loading layer block: %s", error->message);
g_clear_error (&error);
}
}
else if (error)
{
goto load_error;
}
else if (lyr_a == NULL)
{
if (img_a.num_layers > 0)
{
g_warning ("No error message but loading layer failed. This should not happen!");
goto load_error;
}
}
pika_progress_update (0.4);
/* ----- Read the PSD file Merged Image Data block ----- */
IFDBG(2) g_debug ("Read merged image and extra alpha channel block at offset %" G_GOFFSET_FORMAT,
PSD_TELL(input));
if (read_merged_image_block (&img_a, input, &error) < 0)
goto load_error;
pika_progress_update (0.5);
/* ----- Create PIKA image ----- */
IFDBG(2) g_debug ("Create PIKA image");
image = create_pika_image (&img_a, file);
if (! image)
goto load_error;
pika_progress_update (0.6);
/* ----- Add color map ----- */
IFDBG(2) g_debug ("Add color map");
if (add_color_map (image, &img_a) < 0)
goto load_error;
pika_progress_update (0.7);
/* ----- Add image resources ----- */
IFDBG(2) g_debug ("Add image resources");
if (add_image_resources (image, &img_a, input,
resolution_loaded, profile_loaded,
&error) < 0)
goto load_error;
pika_progress_update (0.8);
/* ----- Add layers -----*/
IFDBG(2) g_debug ("Add layers");
if (add_layers (image, &img_a, lyr_a, input, &error) < 0)
goto load_error;
pika_progress_update (0.9);
/* ----- Add merged image data and extra alpha channels ----- */
IFDBG(2) g_debug ("Add merged image data and extra alpha channels");
if (add_merged_image (image, &img_a, input, &error) < 0)
goto load_error;
pika_progress_update (1.0);
IFDBG(2) g_debug ("Close file & return, image id: %d", pika_image_get_id (image));
IFDBG(1) g_debug ("\n----------------------------------------"
"----------------------------------------\n");
pika_image_clean_all (image);
pika_image_undo_enable (image);
g_object_unref (input);
return image;
/* ----- Process load errors ----- */
load_error:
if (error)
{
g_set_error (load_error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error loading PSD file: %s"), error->message);
g_error_free (error);
}
/* Delete partially loaded image */
if (image)
pika_image_delete (image);
/* Close file if Open */
g_object_unref (input);
return NULL;
}
/* Loading metadata for external file formats */
PikaImage *
load_image_metadata (GFile *file,
gint data_length,
PikaImage *image,
gboolean for_layers,
gboolean is_cmyk,
PSDSupport *unsupported_features,
GError **error)
{
GInputStream *input;
PSDimage img_a;
gboolean profile_loaded;
gboolean resolution_loaded;
/* Convert metadata file to PSD format */
input = G_INPUT_STREAM (g_file_read (file, NULL, error));
if (! input)
{
g_object_unref (input);
return image;
}
/* Load metadata for external file format */
img_a.image_res_len = data_length;
img_a.image_res_start = 0;
img_a.version = 1;
img_a.layer_selection = NULL;
img_a.columns = pika_image_get_width (image);
img_a.rows = pika_image_get_height (image);
img_a.base_type = pika_image_get_base_type (image);
img_a.merged_image_only = FALSE;
img_a.ibm_pc_format = FALSE;
img_a.alpha_names = NULL;
img_a.alpha_display_info = NULL;
img_a.alpha_display_count = 0;
img_a.alpha_id = NULL;
img_a.alpha_id_count = 0;
img_a.quick_mask_id = 0;
img_a.cmyk_profile = NULL;
initialize_unsupported (unsupported_features);
img_a.unsupported_features = unsupported_features;
if (! for_layers)
{
PSDimageres res_a;
while (PSD_TELL (input) < img_a.image_res_start + img_a.image_res_len)
{
if (get_image_resource_header (&res_a, input, error) < 0)
break;
if (res_a.data_start + res_a.data_len >
img_a.image_res_start + img_a.image_res_len)
{
IFDBG(1) g_debug ("Unexpected end of image resource data");
break;
}
if (load_image_resource (&res_a, image, &img_a, input,
&resolution_loaded, &profile_loaded,
error) < 0)
break;
}
}
else
{
PSDlayer **lyr_a = NULL;
gchar sig[4];
gchar key[4];
if (psd_read (input, &sig, 4, error) < 4)
{
g_object_unref (input);
return image;
}
if (psd_read (input, &key, 4, error) < 4)
{
g_object_unref (input);
return image;
}
/* Treat labels/ints as Little Endian */
if (memcmp (sig, "MIB8", 4) == 0)
img_a.ibm_pc_format = TRUE;
/* Setting up PSDImage structure */
if (memcmp (key, "Layr", 4) == 0 ||
memcmp (key, "ryaL", 4) == 0)
{
img_a.bps = 8;
}
else if (memcmp (key, "Lr16", 4) == 0 ||
memcmp (key, "61rL", 4) == 0)
{
img_a.bps = 16;
}
else if (memcmp (key, "Lr32", 4) == 0 ||
memcmp (key, "23rL", 4) == 0)
{
img_a.bps = 32;
}
else
{
/* Get BPC from existing image */
switch (pika_image_get_precision (image))
{
case PIKA_PRECISION_U8_LINEAR:
case PIKA_PRECISION_U8_NON_LINEAR:
case PIKA_PRECISION_U8_PERCEPTUAL:
img_a.bps = 8;
break;
case PIKA_PRECISION_U16_LINEAR:
case PIKA_PRECISION_U16_NON_LINEAR:
case PIKA_PRECISION_U16_PERCEPTUAL:
case PIKA_PRECISION_HALF_LINEAR:
case PIKA_PRECISION_HALF_NON_LINEAR:
case PIKA_PRECISION_HALF_PERCEPTUAL:
img_a.bps = 16;
break;
case PIKA_PRECISION_U32_LINEAR:
case PIKA_PRECISION_U32_NON_LINEAR:
case PIKA_PRECISION_U32_PERCEPTUAL:
case PIKA_PRECISION_FLOAT_LINEAR:
case PIKA_PRECISION_FLOAT_NON_LINEAR:
case PIKA_PRECISION_FLOAT_PERCEPTUAL:
img_a.bps = 32;
break;
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid PSD metadata layer format"));
return image;
}
}
switch (pika_image_get_base_type (image))
{
case PIKA_RGB:
img_a.color_mode = PSD_RGB;
break;
case PIKA_GRAY:
img_a.color_mode = PSD_GRAYSCALE;
break;
case PIKA_INDEXED:
img_a.color_mode = PSD_INDEXED;
break;
}
if (is_cmyk)
img_a.color_mode = PSD_CMYK;
/* Set layer block size from metadata */
img_a.mask_layer_len = data_length;
lyr_a = read_layer_block (&img_a, input, error);
if (! lyr_a)
{
g_object_unref (input);
return image;
}
add_layers (image, &img_a, lyr_a, input, error);
}
g_object_unref (input);
return image;
}
/* Local functions */
static gint
read_header_block (PSDimage *img_a,
GInputStream *input,
GError **error)
{
gchar sig[4];
gchar buf[6];
if (psd_read (input, sig, 4, error) < 4 ||
psd_read (input, &img_a->version, 2, error) < 2 ||
psd_read (input, buf, 6, error) < 6 ||
psd_read (input, &img_a->channels, 2, error) < 2 ||
psd_read (input, &img_a->rows, 4, error) < 4 ||
psd_read (input, &img_a->columns, 4, error) < 4 ||
psd_read (input, &img_a->bps, 2, error) < 2 ||
psd_read (input, &img_a->color_mode, 2, error) < 2)
{
psd_set_error (error);
return -1;
}
img_a->version = GUINT16_FROM_BE (img_a->version);
img_a->channels = GUINT16_FROM_BE (img_a->channels);
img_a->rows = GUINT32_FROM_BE (img_a->rows);
img_a->columns = GUINT32_FROM_BE (img_a->columns);
img_a->bps = GUINT16_FROM_BE (img_a->bps);
img_a->color_mode = GUINT16_FROM_BE (img_a->color_mode);
IFDBG(1) g_debug ("\n\n\tSig: %.4s\n\tVer: %d\n\tChannels: "
"%d\n\tSize: %dx%d\n\tBPS: %d\n\tMode: %d\n",
sig, img_a->version, img_a->channels,
img_a->columns, img_a->rows,
img_a->bps, img_a->color_mode);
if (memcmp (sig, "8BPS", 4) != 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Not a valid Photoshop document file"));
return -1;
}
if (img_a->version != 1 && img_a->version != 2)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported file format version: %d"), img_a->version);
return -1;
}
if (img_a->channels > MAX_CHANNELS)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Too many channels in file: %d"), img_a->channels);
return -1;
}
if (img_a->rows < 1 || img_a->rows > PIKA_MAX_IMAGE_SIZE)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid image height: %d"),
img_a->rows);
return -1;
}
if (img_a->columns < 1 || img_a->columns > PIKA_MAX_IMAGE_SIZE)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid image width: %d"),
img_a->columns);
return -1;
}
/* img_a->rows is sanitized above, so a division by zero is avoided here */
if (img_a->columns > G_MAXINT32 / img_a->rows)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid image size: %dx%d"),
img_a->columns, img_a->rows);
return -1;
}
if (img_a->color_mode != PSD_BITMAP
&& img_a->color_mode != PSD_GRAYSCALE
&& img_a->color_mode != PSD_INDEXED
&& img_a->color_mode != PSD_RGB
&& img_a->color_mode != PSD_MULTICHANNEL
&& img_a->color_mode != PSD_CMYK
&& img_a->color_mode != PSD_LAB
&& img_a->color_mode != PSD_DUOTONE)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported color mode: %s"),
get_psd_color_mode_name (img_a->color_mode));
return -1;
}
if (img_a->color_mode == PSD_CMYK || img_a->color_mode == PSD_LAB)
{
if (img_a->bps != 8 &&
(img_a->bps != 16 || img_a->color_mode == PSD_LAB))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported color mode: %s"),
get_psd_color_mode_name (img_a->color_mode));
return -1;
}
}
/* Warning for unsupported bit depth */
switch (img_a->bps)
{
case 32:
IFDBG(3) g_debug ("32 Bit Data");
break;
case 16:
IFDBG(3) g_debug ("16 Bit Data");
break;
case 8:
IFDBG(3) g_debug ("8 Bit Data");
break;
case 1:
IFDBG(3) g_debug ("1 Bit Data");
break;
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported bit depth: %d"), img_a->bps);
return -1;
break;
}
return 0;
}
static gint
read_color_mode_block (PSDimage *img_a,
GInputStream *input,
GError **error)
{
static guchar cmap[] = { 0, 0, 0, 255, 255, 255 };
guint32 block_len = 0;
img_a->color_map_entries = 0;
img_a->color_map_len = 0;
if (psd_read (input, &block_len, 4, error) < 4)
{
psd_set_error (error);
return -1;
}
block_len = GUINT32_FROM_BE (block_len);
IFDBG(1) g_debug ("Color map block size = %d", block_len);
if (block_len == 0)
{
if (img_a->color_mode == PSD_INDEXED ||
img_a->color_mode == PSD_DUOTONE )
{
IFDBG(1) g_debug ("No color block for indexed or duotone image");
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("The file is corrupt!"));
return -1;
}
}
else if (img_a->color_mode == PSD_INDEXED)
{
if (block_len != 768)
{
IFDBG(1) g_debug ("Invalid color block size for indexed image");
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("The file is corrupt!"));
return -1;
}
else
{
img_a->color_map_len = block_len;
img_a->color_map = g_malloc (img_a->color_map_len);
if (psd_read (input, img_a->color_map, block_len, error) < block_len)
{
psd_set_error (error);
return -1;
}
else
{
psd_to_pika_color_map (img_a->color_map);
img_a->color_map_entries = 256;
}
}
}
else if (img_a->color_mode == PSD_DUOTONE)
{
img_a->color_map_len = block_len;
img_a->color_map = g_malloc (img_a->color_map_len);
if (psd_read (input, img_a->color_map, block_len, error) < block_len)
{
psd_set_error (error);
return -1;
}
}
else
{
/* Apparently it's possible to have a non zero block_len here. */
if (! psd_seek (input, block_len, G_SEEK_CUR, error))
{
psd_set_error (error);
return -1;
}
}
/* Create color map for bitmap image */
if (img_a->color_mode == PSD_BITMAP)
{
img_a->color_map_len = 6;
img_a->color_map = g_malloc (img_a->color_map_len);
memcpy (img_a->color_map, cmap, img_a->color_map_len);
img_a->color_map_entries = 2;
}
IFDBG(2) g_debug ("Color map data length %d", img_a->color_map_len);
return 0;
}
static gint
read_image_resource_block (PSDimage *img_a,
GInputStream *input,
GError **error)
{
guint64 block_len = 0;
guint64 block_end;
if (psd_read (input, &block_len, 4, error) < 4)
{
psd_set_error (error);
return -1;
}
img_a->image_res_len = GUINT32_FROM_BE (block_len);
IFDBG(1) g_debug ("Image resource block size = %d", (int)img_a->image_res_len);
img_a->image_res_start = PSD_TELL(input);
block_end = img_a->image_res_start + img_a->image_res_len;
if (! psd_seek (input, block_end, G_SEEK_SET, error))
{
psd_set_error (error);
return -1;
}
return 0;
}
static void
free_lyr_a (PSDlayer **lyr_a, gint layer_count)
{
gint lidx;
for (lidx = 0; lidx < layer_count; ++lidx)
if (lyr_a[lidx])
g_free (lyr_a[lidx]);
g_free (lyr_a);
}
static PSDlayer **
read_layer_info (PSDimage *img_a,
GInputStream *input,
GError **error)
{
PSDlayer **lyr_a = NULL;
guint64 block_len;
guint64 block_rem;
gint32 read_len;
gint32 write_len;
gint lidx; /* Layer index */
gint cidx; /* Channel index */
IFDBG(1) g_debug ("Reading layer info at offset %" G_GOFFSET_FORMAT,
PSD_TELL(input));
/* Get number of layers */
if (psd_read (input, &img_a->num_layers, 2, error) < 2)
{
psd_set_error (error);
img_a->num_layers = -1;
return NULL;
}
if (! img_a->ibm_pc_format)
img_a->num_layers = GINT16_FROM_BE (img_a->num_layers);
IFDBG(2) g_debug ("Number of layers: %d (negative means transparency present)", img_a->num_layers);
if (img_a->num_layers < 0)
{
img_a->transparency = TRUE;
img_a->num_layers = -img_a->num_layers;
}
if (! img_a->merged_image_only && img_a->num_layers)
{
/* Read layer records */
PSDlayerres res_a;
/* Create pointer array for the layer records */
lyr_a = g_new0 (PSDlayer *, img_a->num_layers);
for (lidx = 0; lidx < img_a->num_layers; ++lidx)
{
IFDBG(3) g_debug ("Read info for layer %d at offset %" G_GOFFSET_FORMAT, lidx, PSD_TELL(input));
/* Allocate layer record */
lyr_a[lidx] = (PSDlayer *) g_malloc (sizeof (PSDlayer) );
/* Initialise record */
lyr_a[lidx]->drop = FALSE;
lyr_a[lidx]->id = 0;
lyr_a[lidx]->group_type = 0;
if (psd_read (input, &lyr_a[lidx]->top, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->left, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->bottom, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->right, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->num_channels, 2, error) < 2)
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if (! img_a->ibm_pc_format)
{
lyr_a[lidx]->top = GINT32_FROM_BE (lyr_a[lidx]->top);
lyr_a[lidx]->left = GINT32_FROM_BE (lyr_a[lidx]->left);
lyr_a[lidx]->bottom = GINT32_FROM_BE (lyr_a[lidx]->bottom);
lyr_a[lidx]->right = GINT32_FROM_BE (lyr_a[lidx]->right);
lyr_a[lidx]->num_channels =
GUINT16_FROM_BE (lyr_a[lidx]->num_channels);
}
if (lyr_a[lidx]->num_channels > MAX_CHANNELS)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Too many channels in layer: %d"),
lyr_a[lidx]->num_channels);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
IFDBG(2) g_debug ("Layer %d, Coords %d %d %d %d, channels %d, ",
lidx, lyr_a[lidx]->left, lyr_a[lidx]->top,
lyr_a[lidx]->right, lyr_a[lidx]->bottom,
lyr_a[lidx]->num_channels);
lyr_a[lidx]->chn_info = g_new (ChannelLengthInfo, lyr_a[lidx]->num_channels);
for (cidx = 0; cidx < lyr_a[lidx]->num_channels; ++cidx)
{
if (psd_read (input, &lyr_a[lidx]->chn_info[cidx].channel_id, 2, error) < 2 ||
! psd_read_len (input, &lyr_a[lidx]->chn_info[cidx].data_len,
img_a->version, error))
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if (! img_a->ibm_pc_format)
lyr_a[lidx]->chn_info[cidx].channel_id =
GINT16_FROM_BE (lyr_a[lidx]->chn_info[cidx].channel_id);
else
lyr_a[lidx]->chn_info[cidx].data_len =
GUINT32_FROM_LE (lyr_a[lidx]->chn_info[cidx].data_len);
img_a->layer_data_len += lyr_a[lidx]->chn_info[cidx].data_len;
IFDBG(3) g_debug ("Channel ID %d, data len %" G_GSIZE_FORMAT,
lyr_a[lidx]->chn_info[cidx].channel_id,
lyr_a[lidx]->chn_info[cidx].data_len);
}
if (psd_read (input, lyr_a[lidx]->mode_key, 4, error) < 4 ||
psd_read (input, lyr_a[lidx]->blend_mode, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->opacity, 1, error) < 1 ||
psd_read (input, &lyr_a[lidx]->clipping, 1, error) < 1 ||
psd_read (input, &lyr_a[lidx]->flags, 1, error) < 1 ||
psd_read (input, &lyr_a[lidx]->filler, 1, error) < 1 ||
psd_read (input, &lyr_a[lidx]->extra_len, 4, error) < 4)
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
/* Reverse relevant IBM PC Format entries */
if (img_a->ibm_pc_format)
{
gchar blend_mode[4];
for (gint i = 0; i < 4; i++)
blend_mode[i] = lyr_a[lidx]->blend_mode[3 - i];
for (gint i = 0; i < 4; i++)
lyr_a[lidx]->blend_mode[i] = blend_mode[i];
lyr_a[lidx]->extra_len =
GUINT32_FROM_LE (lyr_a[lidx]->extra_len);
}
/* Not sure if 8B64 is possible here but it won't hurt to check. */
if (memcmp (lyr_a[lidx]->mode_key, "8BIM", 4) != 0 &&
memcmp (lyr_a[lidx]->mode_key, "MIB8", 4) != 0 &&
memcmp (lyr_a[lidx]->mode_key, "8B64", 4) != 0)
{
IFDBG(1) g_debug ("Incorrect layer mode signature %.4s",
lyr_a[lidx]->mode_key);
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("The file is corrupt!"));
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
lyr_a[lidx]->layer_flags.trans_prot = lyr_a[lidx]->flags & 1 ? TRUE : FALSE;
lyr_a[lidx]->layer_flags.visible = lyr_a[lidx]->flags & 2 ? FALSE : TRUE;
if (lyr_a[lidx]->flags & 8)
lyr_a[lidx]->layer_flags.irrelevant = lyr_a[lidx]->flags & 16 ? TRUE : FALSE;
else
lyr_a[lidx]->layer_flags.irrelevant = FALSE;
if (! img_a->ibm_pc_format)
lyr_a[lidx]->extra_len = GUINT32_FROM_BE (lyr_a[lidx]->extra_len);
block_rem = lyr_a[lidx]->extra_len;
IFDBG(2) g_debug ("\n\tLayer mode sig: %.4s\n\tBlend mode: %.4s\n\t"
"Opacity: %d\n\tClipping: %d\n\tExtra data len: %" G_GSIZE_FORMAT "\n\t"
"Alpha lock: %d\n\tVisible: %d\n\tIrrelevant: %d",
lyr_a[lidx]->mode_key,
lyr_a[lidx]->blend_mode,
lyr_a[lidx]->opacity,
lyr_a[lidx]->clipping,
lyr_a[lidx]->extra_len,
lyr_a[lidx]->layer_flags.trans_prot,
lyr_a[lidx]->layer_flags.visible,
lyr_a[lidx]->layer_flags.irrelevant);
IFDBG(3) g_debug ("Offset: %" G_GOFFSET_FORMAT ", Remaining length %" G_GSIZE_FORMAT,
PSD_TELL(input), block_rem);
if (! lyr_a[lidx]->layer_flags.irrelevant)
{
if (lyr_a[lidx]->bottom < lyr_a[lidx]->top ||
lyr_a[lidx]->bottom - lyr_a[lidx]->top > PIKA_MAX_IMAGE_SIZE)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid layer height: %d"),
lyr_a[lidx]->bottom - lyr_a[lidx]->top);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if (lyr_a[lidx]->right < lyr_a[lidx]->left ||
lyr_a[lidx]->right - lyr_a[lidx]->left > PIKA_MAX_IMAGE_SIZE)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid layer width: %d"),
lyr_a[lidx]->right - lyr_a[lidx]->left);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if ((lyr_a[lidx]->right - lyr_a[lidx]->left) >
G_MAXINT32 / MAX (lyr_a[lidx]->bottom - lyr_a[lidx]->top, 1))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid layer size: %dx%d"),
lyr_a[lidx]->right - lyr_a[lidx]->left,
lyr_a[lidx]->bottom - lyr_a[lidx]->top);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
}
/* Layer mask data */
if (psd_read (input, &block_len, 4, error) < 4)
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if (! img_a->ibm_pc_format)
block_len = GUINT32_FROM_BE (block_len);
else
block_len = GUINT32_FROM_LE (block_len);
IFDBG(3) g_debug ("Layer mask record size %" G_GOFFSET_FORMAT, block_len);
if (block_len + 4 > block_rem)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid mask info size."));
/* Translations have problems with using G_GSIZE_FORMAT, let's use g_debug. */
g_debug ("Unsupported or invalid mask info size: %" G_GSIZE_FORMAT, block_len);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
block_rem -= (block_len + 4);
IFDBG(3) g_debug ("Offset: %" G_GOFFSET_FORMAT ", Remaining length %" G_GSIZE_FORMAT,
PSD_TELL(input), block_rem);
lyr_a[lidx]->layer_mask_extra.top = 0;
lyr_a[lidx]->layer_mask_extra.left = 0;
lyr_a[lidx]->layer_mask_extra.bottom = 0;
lyr_a[lidx]->layer_mask_extra.right = 0;
lyr_a[lidx]->layer_mask.top = 0;
lyr_a[lidx]->layer_mask.left = 0;
lyr_a[lidx]->layer_mask.bottom = 0;
lyr_a[lidx]->layer_mask.right = 0;
lyr_a[lidx]->layer_mask.def_color = 0;
lyr_a[lidx]->layer_mask.extra_def_color = 0;
lyr_a[lidx]->layer_mask.flags = 0;
lyr_a[lidx]->layer_mask.extra_flags = 0;
lyr_a[lidx]->layer_mask.mask_params = 0;
lyr_a[lidx]->layer_mask.mask_flags.relative_pos = FALSE;
lyr_a[lidx]->layer_mask.mask_flags.disabled = FALSE;
lyr_a[lidx]->layer_mask.mask_flags.invert = FALSE;
lyr_a[lidx]->layer_mask.mask_flags.rendered = FALSE;
lyr_a[lidx]->layer_mask.mask_flags.params_present = FALSE;
if (block_len > 0)
{
if (psd_read (input, &lyr_a[lidx]->layer_mask.top, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->layer_mask.left, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->layer_mask.bottom, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->layer_mask.right, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->layer_mask.def_color, 1, error) < 1 ||
psd_read (input, &lyr_a[lidx]->layer_mask.flags, 1, error) < 1)
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if (! img_a->ibm_pc_format)
{
lyr_a[lidx]->layer_mask.top =
GINT32_FROM_BE (lyr_a[lidx]->layer_mask.top);
lyr_a[lidx]->layer_mask.left =
GINT32_FROM_BE (lyr_a[lidx]->layer_mask.left);
lyr_a[lidx]->layer_mask.bottom =
GINT32_FROM_BE (lyr_a[lidx]->layer_mask.bottom);
lyr_a[lidx]->layer_mask.right =
GINT32_FROM_BE (lyr_a[lidx]->layer_mask.right);
}
lyr_a[lidx]->layer_mask.mask_flags.relative_pos =
lyr_a[lidx]->layer_mask.flags & 1 ? TRUE : FALSE;
lyr_a[lidx]->layer_mask.mask_flags.disabled =
lyr_a[lidx]->layer_mask.flags & 2 ? TRUE : FALSE;
lyr_a[lidx]->layer_mask.mask_flags.invert =
lyr_a[lidx]->layer_mask.flags & 4 ? TRUE : FALSE;
lyr_a[lidx]->layer_mask.mask_flags.rendered =
lyr_a[lidx]->layer_mask.flags & 8 ? TRUE : FALSE;
lyr_a[lidx]->layer_mask.mask_flags.params_present =
lyr_a[lidx]->layer_mask.flags & 16 ? TRUE : FALSE;
IFDBG(3)
{
if (lyr_a[lidx]->layer_mask.flags & 32) g_debug ("Layer mask flags bit 5 set.");
if (lyr_a[lidx]->layer_mask.flags & 64) g_debug ("Layer mask flags bit 6 set.");
if (lyr_a[lidx]->layer_mask.flags & 128) g_debug ("Layer mask flags bit 7 set.");
}
block_len -= 18;
/* According to psd-tools this part comes before reading the
* mask parameters. However if all mask parameter flags are
* set the size of that would also be more than 18. I'm not
* sure if all those flags could be set at the same time or
* how to distinguish them. */
if (block_len >= 18)
{
if (psd_read (input, &lyr_a[lidx]->layer_mask.extra_flags, 1, error) < 1 ||
psd_read (input, &lyr_a[lidx]->layer_mask.extra_def_color, 1, error) < 1 ||
psd_read (input, &lyr_a[lidx]->layer_mask_extra.top, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->layer_mask_extra.left, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->layer_mask_extra.bottom, 4, error) < 4 ||
psd_read (input, &lyr_a[lidx]->layer_mask_extra.right, 4, error) < 4)
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
block_len -= 18;
if (! img_a->ibm_pc_format)
{
lyr_a[lidx]->layer_mask_extra.top =
GINT32_FROM_BE (lyr_a[lidx]->layer_mask_extra.top);
lyr_a[lidx]->layer_mask_extra.left =
GINT32_FROM_BE (lyr_a[lidx]->layer_mask_extra.left);
lyr_a[lidx]->layer_mask_extra.bottom =
GINT32_FROM_BE (lyr_a[lidx]->layer_mask_extra.bottom);
lyr_a[lidx]->layer_mask_extra.right =
GINT32_FROM_BE (lyr_a[lidx]->layer_mask_extra.right);
}
IFDBG(2) g_debug ("Rect enclosing Layer mask %d %d %d %d",
lyr_a[lidx]->layer_mask_extra.left,
lyr_a[lidx]->layer_mask_extra.top,
lyr_a[lidx]->layer_mask_extra.right,
lyr_a[lidx]->layer_mask_extra.bottom);
}
if (block_len > 2 && lyr_a[lidx]->layer_mask.mask_flags.params_present)
{
gint extra_bytes = 0;
if (psd_read (input, &lyr_a[lidx]->layer_mask.mask_params, 1, error) < 1)
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
block_len--;
IFDBG(3) g_debug ("Mask params: %u", lyr_a[lidx]->layer_mask.mask_params);
/* FIXME Extra bytes with user/vector mask density and feather follow.
* We currently can't handle that so we will skip it. */
extra_bytes += (lyr_a[lidx]->layer_mask.mask_params & 1 ? 1 : 0);
extra_bytes += (lyr_a[lidx]->layer_mask.mask_params & 2 ? 8 : 0);
extra_bytes += (lyr_a[lidx]->layer_mask.mask_params & 4 ? 1 : 0);
extra_bytes += (lyr_a[lidx]->layer_mask.mask_params & 8 ? 8 : 0);
IFDBG(3) g_debug ("Extra bytes according to mask parameters %d", extra_bytes);
if (! psd_seek (input, extra_bytes, G_SEEK_CUR, error))
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
block_len -= extra_bytes;
}
if (block_len > 0)
{
/* We have some remaining unknown mask data.
* If size is less than 4 it is most likely padding. */
IFDBG(1)
{
if (block_len > 3)
g_debug ("Skipping %" G_GOFFSET_FORMAT " bytes of unknown layer mask data", block_len);
}
if (! psd_seek (input, block_len, G_SEEK_CUR, error))
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
}
IFDBG(2) g_debug ("Layer mask coords %d %d %d %d",
lyr_a[lidx]->layer_mask.left,
lyr_a[lidx]->layer_mask.top,
lyr_a[lidx]->layer_mask.right,
lyr_a[lidx]->layer_mask.bottom);
IFDBG(3) g_debug ("Default mask color %d, real color %d",
lyr_a[lidx]->layer_mask.def_color,
lyr_a[lidx]->layer_mask.extra_def_color);
IFDBG(3) g_debug ("Mask flags %u, real flags %u, mask params %u",
lyr_a[lidx]->layer_mask.flags,
lyr_a[lidx]->layer_mask.extra_flags,
lyr_a[lidx]->layer_mask.mask_params);
/* Rendered masks can have invalid dimensions: 0, 0, 0, -1 */
if (! lyr_a[lidx]->layer_mask.mask_flags.rendered)
{
/* sanity checks */
if (lyr_a[lidx]->layer_mask.bottom < lyr_a[lidx]->layer_mask.top ||
lyr_a[lidx]->layer_mask.bottom - lyr_a[lidx]->layer_mask.top > PIKA_MAX_IMAGE_SIZE)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid layer mask height: %d"),
lyr_a[lidx]->layer_mask.bottom - lyr_a[lidx]->layer_mask.top);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if (lyr_a[lidx]->layer_mask.right < lyr_a[lidx]->layer_mask.left ||
lyr_a[lidx]->layer_mask.right - lyr_a[lidx]->layer_mask.left > PIKA_MAX_IMAGE_SIZE)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid layer mask width: %d"),
lyr_a[lidx]->layer_mask.right - lyr_a[lidx]->layer_mask.left);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if ((lyr_a[lidx]->layer_mask.right - lyr_a[lidx]->layer_mask.left) >
G_MAXINT32 / MAX (lyr_a[lidx]->layer_mask.bottom - lyr_a[lidx]->layer_mask.top, 1))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid layer mask size: %dx%d"),
lyr_a[lidx]->layer_mask.right - lyr_a[lidx]->layer_mask.left,
lyr_a[lidx]->layer_mask.bottom - lyr_a[lidx]->layer_mask.top);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
}
}
/* Layer blending ranges */ /* FIXME */
if (psd_read (input, &block_len, 4, error) < 4)
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
if (! img_a->ibm_pc_format)
block_len = GUINT32_FROM_BE (block_len);
block_rem -= (block_len + 4);
IFDBG(3) g_debug ("Blending ranges size %" G_GSIZE_FORMAT
" (not imported)", block_len);
IFDBG(3) g_debug ("Offset: %" G_GOFFSET_FORMAT ", Remaining length %" G_GSIZE_FORMAT,
PSD_TELL(input), block_rem);
if (block_len > 0)
{
if (! psd_seek (input, block_len, G_SEEK_CUR, error))
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
}
lyr_a[lidx]->name = fread_pascal_string (&read_len, &write_len,
4, input, error);
if (*error)
{
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
block_rem -= read_len;
IFDBG(3) g_debug ("Offset: %" G_GOFFSET_FORMAT ", Remaining length %" G_GSIZE_FORMAT,
PSD_TELL(input), block_rem);
/* Adjustment layer info */ /* FIXME */
while (block_rem > 7)
{
gint header_size;
IFDBG(3) g_debug ("Offset: %" G_GOFFSET_FORMAT ", Remaining length %" G_GSIZE_FORMAT,
PSD_TELL(input), block_rem);
header_size = get_layer_resource_header (&res_a, img_a->version, input, error);
if (header_size < 0)
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
block_rem -= header_size;
if (res_a.data_len % 2 != 0)
{
/* Warn the user about an invalid length value but
* try to recover graciously. See bug #771558.
*/
g_printerr ("psd-load: Layer extra data length should "
"be even, but it is %"G_GOFFSET_FORMAT".", res_a.data_len);
}
if (res_a.data_len > block_rem)
{
IFDBG(1) g_debug ("Unexpected end of layer resource data");
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("The file is corrupt!"));
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
lyr_a[lidx]->unsupported_features = img_a->unsupported_features;
if (load_layer_resource (&res_a, lyr_a[lidx], input, error) < 0)
{
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
block_rem -= res_a.data_len;
IFDBG(3) g_debug ("Remaining length in block: %" G_GSIZE_FORMAT, block_rem);
}
if (block_rem > 0)
{
if (! psd_seek (input, block_rem, G_SEEK_CUR, error))
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
}
}
img_a->layer_data_start = PSD_TELL(input);
if (! psd_seek (input, img_a->layer_data_len, G_SEEK_CUR, error))
{
psd_set_error (error);
free_lyr_a (lyr_a, img_a->num_layers);
return NULL;
}
IFDBG(1) g_debug ("Layer image data block start %" G_GOFFSET_FORMAT ", size %" G_GSIZE_FORMAT
", end: %" G_GOFFSET_FORMAT,
img_a->layer_data_start, img_a->layer_data_len, PSD_TELL(input));
}
return lyr_a;
}
static PSDlayer **
read_layer_block (PSDimage *img_a,
GInputStream *input,
GError **error)
{
PSDlayer **lyr_a = NULL;
guint64 block_len;
guint64 block_end;
gint block_len_size = (img_a->version == 1 ? 4 : 8);
/* If layer data is being loaded for non-PSD files (like TIFF),
* then mask_layer_len will have its size preloaded */
if (img_a->mask_layer_len == 0)
{
if (! psd_read_len (input, &block_len, img_a->version, error))
{
img_a->num_layers = -1;
return NULL;
}
else
{
img_a->mask_layer_len = block_len;
}
}
IFDBG(1) g_debug ("Layer and mask block size = %" G_GOFFSET_FORMAT, img_a->mask_layer_len);
img_a->transparency = FALSE;
img_a->layer_data_len = 0;
img_a->num_layers = 0;
if (!img_a->mask_layer_len)
{
img_a->num_layers = 0;
return NULL;
}
else
{
gsize total_len = img_a->mask_layer_len;
img_a->mask_layer_start = PSD_TELL(input);
block_end = img_a->mask_layer_start + img_a->mask_layer_len;
/* Layer info */
if (! psd_read_len (input, &block_len, img_a->version, error))
{
lyr_a = NULL;
return NULL;
}
else
{
if (img_a->ibm_pc_format)
block_len = GUINT32_FROM_BE (block_len);
IFDBG(1) g_debug ("Layer info size = %" G_GOFFSET_FORMAT, block_len);
/* To make computations easier add the size of block_len */
block_len += block_len_size;
if (block_len > block_len_size)
{
lyr_a = read_layer_info (img_a, input, error);
if (error && *error)
return NULL;
if (img_a->mask_layer_start + block_len != PSD_TELL(input))
{
g_debug ("Unexpected offset after reading layer info: %" G_GOFFSET_FORMAT
" instead of %" G_GOFFSET_FORMAT,
PSD_TELL(input), img_a->mask_layer_start + block_len);
/* Correct the offset. */
if (! psd_seek (input, img_a->mask_layer_start + block_len,
G_SEEK_SET, error))
return NULL;
}
}
total_len -= block_len;
}
IFDBG(3) g_debug ("Offset: %" G_GOFFSET_FORMAT ", remaining len: %" G_GSIZE_FORMAT,
PSD_TELL(input), total_len);
if (total_len >= 4)
{
/* Global layer mask info */
if (psd_read (input, &block_len, 4, error) == 4)
{
if (! img_a->ibm_pc_format)
block_len = GUINT32_FROM_BE (block_len);
else
block_len = GUINT32_TO_LE (block_len);
IFDBG(1) g_debug ("Global layer mask info size = %" G_GOFFSET_FORMAT, block_len);
if (block_len > total_len)
{
g_debug ("Invalid global layer mask size. Skipping remainder of layer data.");
total_len = 0;
}
else
{
/* read_global_layer_mask_info (img_a, f, error); */
/* For now skipping ... */
if (block_len > 0)
if (! psd_seek (input, block_len, G_SEEK_CUR, error))
{
psd_set_error (error);
return NULL;
}
total_len -= block_len + 4;
}
}
else
{
psd_set_error (error);
return NULL;
}
}
/* Additional Layer Information */
g_debug ("Reading layer resources...");
while (total_len >= 12)
{
gsize adjusted_len;
gint header_size;
PSDlayerres res_a;
IFDBG(3) g_debug ("Offset: %" G_GOFFSET_FORMAT ", remaining len: %" G_GSIZE_FORMAT,
PSD_TELL(input), total_len);
header_size = get_layer_resource_header (&res_a, img_a->version, input, error);
if (header_size < 0)
{
psd_set_error (error);
return NULL;
}
total_len -= header_size;
if (res_a.data_len > total_len)
{
/* Not fatal just skip remainder of this block. */
g_debug ("Invalid resource block length: %" G_GSIZE_FORMAT
" is larger than maximum %" G_GSIZE_FORMAT,
res_a.data_len, total_len);
break;
}
if (res_a.data_len > 0)
{
if (memcmp (res_a.key, "Lr16", 4) == 0 ||
memcmp (res_a.key, "Lr32", 4) == 0)
{
lyr_a = read_layer_info (img_a, input, error);
if (lyr_a == NULL)
{
img_a->num_layers = 0;
}
if (error && *error)
return NULL;
}
else
{
/* FIXME Loading layer resources here to a specific layer is probably
* not right. We need to figure out what to do instead.
* Most likely these resources are not connected to a layer so
* lyr_a being NULL should not matter. e.g. PATT (pattern)
* e.g. 0layers.psb has resources when lyr_a == NULL
*/
if (load_layer_resource (&res_a, NULL, input, error) < 0)
{
return NULL;
}
}
}
/* Seems the length here needs to be a multiple of 4? */
adjusted_len = (res_a.data_len + 3) / 4 * 4;
total_len -= adjusted_len;
/* Seek to correct offset */
if (! psd_seek (input, res_a.data_start + adjusted_len, G_SEEK_SET, error))
{
g_debug ("Failed to seek to start of next layer resource at offset %" G_GOFFSET_FORMAT,
res_a.data_start + adjusted_len);
psd_set_error (error);
return NULL;
}
}
/* Skip to end of block */
if (! psd_seek (input, block_end, G_SEEK_SET, error))
{
psd_set_error (error);
return NULL;
}
IFDBG(3) g_debug ("Finished read_layer_block. Now at offset: %" G_GOFFSET_FORMAT,
PSD_TELL(input));
}
return lyr_a;
}
static gint
read_merged_image_block (PSDimage *img_a,
GInputStream *input,
GError **error)
{
img_a->merged_image_start = PSD_TELL(input);
if (! psd_seek (input, 0, G_SEEK_END, error))
{
psd_set_error (error);
return -1;
}
img_a->merged_image_len = PSD_TELL(input) - img_a->merged_image_start;
IFDBG(1) g_debug ("Merged image data block: Start: %" G_GOFFSET_FORMAT ", len: %" G_GOFFSET_FORMAT,
img_a->merged_image_start, img_a->merged_image_len);
return 0;
}
static PikaImage *
create_pika_image (PSDimage *img_a,
GFile *file)
{
PikaImage *image = NULL;
PikaPrecision precision;
switch (img_a->color_mode)
{
case PSD_MULTICHANNEL:
case PSD_GRAYSCALE:
case PSD_DUOTONE:
img_a->base_type = PIKA_GRAY;
break;
case PSD_BITMAP:
case PSD_INDEXED:
img_a->base_type = PIKA_INDEXED;
break;
case PSD_LAB:
case PSD_CMYK:
case PSD_RGB:
img_a->base_type = PIKA_RGB;
break;
default:
/* Color mode already validated - should not be here */
g_warning ("Invalid color mode");
return NULL;
break;
}
switch (img_a->bps)
{
case 32:
precision = PIKA_PRECISION_FLOAT_NON_LINEAR;
break;
case 16:
if (img_a->color_mode == PSD_CMYK)
precision = PIKA_PRECISION_FLOAT_NON_LINEAR;
else
precision = PIKA_PRECISION_U16_NON_LINEAR;
break;
case 8:
case 1:
if (img_a->color_mode == PSD_CMYK || img_a->color_mode == PSD_LAB)
precision = PIKA_PRECISION_FLOAT_NON_LINEAR;
else
precision = PIKA_PRECISION_U8_NON_LINEAR;
break;
default:
/* Precision not supported */
g_warning ("Invalid precision");
return NULL;
break;
}
/* Create pika image */
IFDBG(2) g_debug ("Create image");
image = pika_image_new_with_precision (img_a->columns, img_a->rows,
img_a->base_type, precision);
pika_image_undo_disable (image);
return image;
}
static gint
add_color_map (PikaImage *image,
PSDimage *img_a)
{
PikaParasite *parasite;
if (img_a->color_map_len)
{
if (img_a->color_mode != PSD_DUOTONE)
{
pika_image_set_colormap (image, img_a->color_map,
img_a->color_map_entries);
}
else
{
/* Add parasite for Duotone color data */
IFDBG(2) g_debug ("Add Duotone color data parasite");
parasite = pika_parasite_new (PSD_PARASITE_DUOTONE_DATA, 0,
img_a->color_map_len, img_a->color_map);
pika_image_attach_parasite (image, parasite);
pika_parasite_free (parasite);
}
g_free (img_a->color_map);
}
return 0;
}
static gint
add_image_resources (PikaImage *image,
PSDimage *img_a,
GInputStream *input,
gboolean *resolution_loaded,
gboolean *profile_loaded,
GError **error)
{
PSDimageres res_a;
if (! psd_seek (input, img_a->image_res_start, G_SEEK_SET, error))
{
psd_set_error (error);
g_debug ("Failed to seek in add_image_resources");
return -1;
}
/* Initialise image resource variables */
img_a->no_icc = FALSE;
img_a->layer_state = 0;
img_a->layer_selection = NULL;
img_a->alpha_names = NULL;
img_a->alpha_display_info = NULL;
img_a->alpha_display_count = 0;
img_a->alpha_id = NULL;
img_a->alpha_id_count = 0;
img_a->quick_mask_id = 0;
while (PSD_TELL(input) < img_a->image_res_start + img_a->image_res_len)
{
if (get_image_resource_header (&res_a, input, error) < 0)
return -1;
if (res_a.data_start + res_a.data_len >
img_a->image_res_start + img_a->image_res_len)
{
IFDBG(1) g_debug ("Unexpected end of image resource data");
return 0;
}
if (load_image_resource (&res_a, image, img_a, input,
resolution_loaded, profile_loaded,
error) < 0)
{
return -1;
}
}
return 0;
}
static guchar *
psd_convert_cmyk_to_srgb (PSDimage *img_a,
guchar *dst,
guchar *src,
gint width,
gint height,
gboolean alpha,
GError **error)
{
const Babl *fish = NULL;
const Babl *base_format = NULL;
const Babl *space = NULL;
if (img_a->cmyk_profile &&
pika_color_profile_is_cmyk (img_a->cmyk_profile))
{
/* If no CMYK profile attached, babl_format_with_space ()
* will ignore the NULL space value and process the image
* as if it were just using babl_format ()
*/
space = pika_color_profile_get_space (img_a->cmyk_profile,
PIKA_COLOR_RENDERING_INTENT_RELATIVE_COLORIMETRIC,
error);
}
if (img_a->bps == 8)
base_format = babl_format_with_space (alpha ? "cmykA u8" : "cmyk u8", space);
else
base_format = babl_format_with_space (alpha ? "cmykA u16" : "cmyk u16", space);
if (! alpha)
fish = babl_fish (base_format, "R'G'B' float");
else
fish = babl_fish (base_format, "R'G'B'A float");
babl_process (fish, src, dst, width * height);
return (guchar*) dst;
}
static guchar *
psd_convert_lab_to_srgb (PSDimage *img_a,
guchar *dst,
guchar *src,
gint width,
gint height,
gboolean alpha)
{
const Babl *fish;
if (alpha)
fish = babl_fish ("CIE Lab alpha u8", "R'G'B'A float");
else
fish = babl_fish ("CIE Lab u8", "R'G'B' float");
babl_process (fish, src, dst, width * height);
return (guchar*) dst;
}
static gboolean
read_RLE_channel (PSDimage *img_a,
PSDchannel *lyr_chn,
guint64 channel_data_len,
GInputStream *input,
GError **error)
{
gint rle_count_size = (img_a->version == 1 ? 2 : 4);
gint rle_row_size = lyr_chn->rows * rle_count_size;
guint32 *rle_pack_len;
gint rowi;
IFDBG(4) g_debug ("RLE channel length %" G_GSIZE_FORMAT
", RLE length data: %d, "
"RLE data block: %" G_GSIZE_FORMAT,
channel_data_len - 2,
rle_row_size,
(channel_data_len - 2 - rle_row_size));
rle_pack_len = g_malloc (lyr_chn->rows * 4); /* Always 4 since this is the data size in memory. */
for (rowi = 0; rowi < lyr_chn->rows; ++rowi)
{
if (psd_read (input, &rle_pack_len[rowi], rle_count_size,
error) < rle_count_size)
{
psd_set_error (error);
g_free (rle_pack_len);
return FALSE;
}
if (img_a->version == 1)
rle_pack_len[rowi] = img_a->ibm_pc_format ?
GUINT16_FROM_LE (rle_pack_len[rowi]) :
GUINT16_FROM_BE (rle_pack_len[rowi]);
else
rle_pack_len[rowi] = img_a->ibm_pc_format ?
GUINT32_FROM_LE (rle_pack_len[rowi]) :
GUINT32_FROM_BE (rle_pack_len[rowi]);
}
if (read_channel_data (lyr_chn, img_a->bps,
PSD_COMP_RLE, rle_pack_len, input, 0,
error) < 1)
{
psd_set_error (error);
g_free (rle_pack_len);
return FALSE;
}
g_free (rle_pack_len);
return TRUE;
}
static void
free_lyr_chn (PSDchannel **lyr_chn, gint channel_count)
{
gint cidx;
for (cidx = 0; cidx < channel_count; ++cidx)
if (lyr_chn[cidx])
g_free (lyr_chn[cidx]);
g_free (lyr_chn);
}
static gint
add_layers (PikaImage *image,
PSDimage *img_a,
PSDlayer **lyr_a,
GInputStream *input,
GError **error)
{
PSDchannel **lyr_chn;
GArray *parent_group_stack;
PikaLayer *parent_group = NULL;
PikaLayer *clipping_group = NULL;
guint16 alpha_chn;
guint16 user_mask_chn;
guint16 layer_channels, base_channels;
guint16 channel_idx[MAX_CHANNELS];
guint16 bps;
gint32 l_x; /* Layer x */
gint32 l_y; /* Layer y */
gint32 l_w; /* Layer width */
gint32 l_h; /* Layer height */
gint32 lm_x; /* Layer mask x */
gint32 lm_y; /* Layer mask y */
gint32 lm_w; /* Layer mask width */
gint32 lm_h; /* Layer mask height */
PikaLayer *layer = NULL;
PikaLayerMask *mask = NULL;
GList *selected_layers = NULL;
gint lidx; /* Layer index */
gint cidx; /* Channel index */
gint gidx; /* Clipping group start index */
gboolean alpha;
gboolean user_mask;
gboolean empty;
gboolean empty_mask;
gboolean use_clipping_group;
GeglBuffer *buffer;
PikaImageType image_type;
LayerModeInfo mode_info;
IFDBG(2) g_debug ("Number of layers: %d", img_a->num_layers);
if (img_a->merged_image_only || img_a->num_layers == 0)
{
IFDBG(2) g_debug ("No layers to process");
return 0;
}
/* Layered image - Photoshop 3 style */
if (! psd_seek (input, img_a->layer_data_start, G_SEEK_SET, error))
{
psd_set_error (error);
return -1;
}
IFDBG(3) g_debug ("Pre process layers...");
use_clipping_group = FALSE;
gidx = -1;
for (lidx = 0; lidx < img_a->num_layers; ++lidx)
{
lyr_a[lidx]->unsupported_features = img_a->unsupported_features;
if (lyr_a[lidx]->clipping == 1)
{
/* Photoshop handles layers with clipping differently than PIKA does.
* To correctly show these layers we need to make a new group
* starting with the first non-clipping layer and including all
* the clipping layers above it.
*/
if (lidx > 0)
{
if (gidx == -1)
{
use_clipping_group = TRUE;
/* Looking at the results we should ignore layer groups */
if (lyr_a[lidx-1]->group_type == 0)
gidx = lidx - 1;
else
gidx = lidx;
lyr_a[gidx]->clipping_group_type = 1; /* start clipping group */
IFDBG(3) g_debug ("Layer: %s - start of clipping group", lyr_a[gidx]->name);
}
else if (lidx + 1 == img_a->num_layers && use_clipping_group)
{
/* end clipping group at the top of the layer stack */
lyr_a[lidx]->clipping_group_type = 2; /* end clipping group */
IFDBG(3) g_debug ("Layer: %s - end of clipping group", lyr_a[lidx]->name);
use_clipping_group = FALSE;
gidx = -1;
}
else
{
lyr_a[lidx]->clipping_group_type = 0;
}
}
}
else if (use_clipping_group)
{
/* end clipping group */
lyr_a[lidx-1]->clipping_group_type = 2;
IFDBG(3) g_debug ("Layer: %s - end of clipping group", lyr_a[lidx-1]->name);
use_clipping_group = FALSE;
gidx = -1;
}
else
{
lyr_a[lidx]->clipping_group_type = 0;
}
}
/* set the root of the group hierarchy */
parent_group_stack = g_array_new (FALSE, FALSE, sizeof (PikaLayer *));
g_array_append_val (parent_group_stack, parent_group);
for (lidx = 0; lidx < img_a->num_layers; ++lidx)
{
IFDBG(2) g_debug ("Process Layer No %d (%s).", lidx, lyr_a[lidx]->name);
if (lyr_a[lidx]->drop)
{
IFDBG(2) g_debug ("Drop layer %d", lidx);
/* Step past layer data */
for (cidx = 0; cidx < lyr_a[lidx]->num_channels; ++cidx)
{
if (! psd_seek (input, lyr_a[lidx]->chn_info[cidx].data_len,
G_SEEK_CUR, error))
{
psd_set_error (error);
return -1;
}
}
}
else
{
/* Empty layer */
if (lyr_a[lidx]->bottom - lyr_a[lidx]->top == 0
|| lyr_a[lidx]->right - lyr_a[lidx]->left == 0)
empty = TRUE;
else
empty = FALSE;
/* Empty mask */
if (lyr_a[lidx]->layer_mask.bottom - lyr_a[lidx]->layer_mask.top == 0
|| lyr_a[lidx]->layer_mask.right - lyr_a[lidx]->layer_mask.left == 0)
empty_mask = TRUE;
else
empty_mask = FALSE;
IFDBG(3) g_debug ("Empty mask %d, size %d %d", empty_mask,
lyr_a[lidx]->layer_mask.bottom - lyr_a[lidx]->layer_mask.top,
lyr_a[lidx]->layer_mask.right - lyr_a[lidx]->layer_mask.left);
/* Load layer channel data */
IFDBG(2) g_debug ("Number of channels: %d", lyr_a[lidx]->num_channels);
/* Create pointer array for the channel records */
lyr_chn = g_new0 (PSDchannel *, lyr_a[lidx]->num_channels);
for (cidx = 0; cidx < lyr_a[lidx]->num_channels; ++cidx)
{
guint16 comp_mode = PSD_COMP_RAW;
/* Allocate channel record */
lyr_chn[cidx] = g_malloc (sizeof (PSDchannel) );
lyr_chn[cidx]->id = lyr_a[lidx]->chn_info[cidx].channel_id;
lyr_chn[cidx]->rows = lyr_a[lidx]->bottom - lyr_a[lidx]->top;
lyr_chn[cidx]->columns = lyr_a[lidx]->right - lyr_a[lidx]->left;
lyr_chn[cidx]->data = NULL;
if (lyr_chn[cidx]->id == PSD_CHANNEL_EXTRA_MASK)
{
if (! psd_seek (input, lyr_a[lidx]->chn_info[cidx].data_len,
G_SEEK_CUR, error))
{
psd_set_error (error);
free_lyr_chn (lyr_chn, lyr_a[lidx]->num_channels);
return -1;
}
continue;
}
else if (lyr_chn[cidx]->id == PSD_CHANNEL_MASK)
{
/* Works around a bug in panotools psd files where the layer mask
size is given as 0 but data exists. Set mask size to layer size.
*/
if (empty_mask && lyr_a[lidx]->chn_info[cidx].data_len - 2 > 0)
{
empty_mask = FALSE;
if (lyr_a[lidx]->layer_mask.top == lyr_a[lidx]->layer_mask.bottom)
{
lyr_a[lidx]->layer_mask.top = lyr_a[lidx]->top;
lyr_a[lidx]->layer_mask.bottom = lyr_a[lidx]->bottom;
}
if (lyr_a[lidx]->layer_mask.right == lyr_a[lidx]->layer_mask.left)
{
lyr_a[lidx]->layer_mask.right = lyr_a[lidx]->right;
lyr_a[lidx]->layer_mask.left = lyr_a[lidx]->left;
}
}
lyr_chn[cidx]->rows = (lyr_a[lidx]->layer_mask.bottom -
lyr_a[lidx]->layer_mask.top);
lyr_chn[cidx]->columns = (lyr_a[lidx]->layer_mask.right -
lyr_a[lidx]->layer_mask.left);
}
IFDBG(3) g_debug ("Channel id %d, %dx%d",
lyr_chn[cidx]->id,
lyr_chn[cidx]->columns,
lyr_chn[cidx]->rows);
/* Only read channel data if there is any channel
* data. Note that the channel data can contain a
* compression method but no actual data.
*/
if (lyr_a[lidx]->chn_info[cidx].data_len >= COMP_MODE_SIZE)
{
if (psd_read (input, &comp_mode, COMP_MODE_SIZE, error) < COMP_MODE_SIZE)
{
psd_set_error (error);
free_lyr_chn (lyr_chn, lyr_a[lidx]->num_channels);
return -1;
}
if (! img_a->ibm_pc_format)
comp_mode = GUINT16_FROM_BE (comp_mode);
else
comp_mode = GUINT16_FROM_LE (comp_mode);
IFDBG(3) g_debug ("Compression mode: %d", comp_mode);
}
if (lyr_a[lidx]->chn_info[cidx].data_len > COMP_MODE_SIZE)
{
switch (comp_mode)
{
case PSD_COMP_RAW: /* Planar raw data */
IFDBG(3) g_debug ("Raw data length: %" G_GSIZE_FORMAT,
lyr_a[lidx]->chn_info[cidx].data_len - 2);
if (read_channel_data (lyr_chn[cidx], img_a->bps,
PSD_COMP_RAW, NULL, input, 0,
error) < 1)
{
psd_set_error (error);
free_lyr_chn (lyr_chn, lyr_a[lidx]->num_channels);
return -1;
}
break;
case PSD_COMP_RLE: /* Packbits */
if (! read_RLE_channel (img_a, lyr_chn[cidx],
lyr_a[lidx]->chn_info[cidx].data_len,
input, error))
{
psd_set_error (error);
free_lyr_chn (lyr_chn, lyr_a[lidx]->num_channels);
return -1;
}
break;
case PSD_COMP_ZIP: /* ? */
case PSD_COMP_ZIP_PRED:
if (read_channel_data (lyr_chn[cidx], img_a->bps,
comp_mode, NULL, input,
lyr_a[lidx]->chn_info[cidx].data_len - 2,
error) < 1)
{
psd_set_error (error);
free_lyr_chn (lyr_chn, lyr_a[lidx]->num_channels);
return -1;
}
break;
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported compression mode: %d"), comp_mode);
free_lyr_chn (lyr_chn, lyr_a[lidx]->num_channels);
return -1;
break;
}
}
}
/* Draw layer */
alpha = FALSE;
alpha_chn = -1;
user_mask = FALSE;
user_mask_chn = -1;
layer_channels = 0;
l_x = 0;
l_y = 0;
l_w = img_a->columns;
l_h = img_a->rows;
if (parent_group_stack->len > 0)
parent_group = g_array_index (parent_group_stack, PikaLayer *,
parent_group_stack->len - 1);
else
parent_group = NULL; /* root */
if (img_a->color_mode == PSD_CMYK)
base_channels = 4;
else if (img_a->color_mode == PSD_RGB || img_a->color_mode == PSD_LAB)
base_channels = 3;
else
base_channels = 1;
IFDBG(3) g_debug ("Re-hash channel indices");
for (cidx = 0; cidx < lyr_a[lidx]->num_channels; ++cidx)
{
IFDBG(3) g_debug ("Channel: %d - id: %d", cidx, lyr_chn[cidx]->id);
if (lyr_chn[cidx]->id == PSD_CHANNEL_MASK ||
lyr_chn[cidx]->id == PSD_CHANNEL_EXTRA_MASK)
{
/* According to the specs the extra mask (which they call
* real user supplied layer mask) is used "when both a user
* mask and a vector mask are present".
* I haven't seen an example that has the extra mask, so not
* sure which of the masks would appear first.
* For now assuming that the extra mask will be first. */
if (! user_mask)
{
user_mask = TRUE;
user_mask_chn = cidx;
}
else
{
/* Not using this mask, make sure it gets freed. */
g_free (lyr_chn[cidx]->data);
}
}
else if (lyr_chn[cidx]->id == PSD_CHANNEL_ALPHA)
{
alpha = TRUE;
alpha_chn = cidx;
}
else if (lyr_chn[cidx]->data)
{
if (layer_channels < base_channels)
{
channel_idx[layer_channels] = cidx; /* Assumes in sane order */
layer_channels++; /* RGB, Lab, CMYK etc. */
}
else
{
/* channel_idx[base_channels] is reserved for alpha channel,
* but this layer apparently has extra channels.
* From the one example I have (see #8411) it looks like
* that channel is the same as the alpha channel. */
IFDBG(2) g_debug ("This layer has an extra channel (id: %d)", lyr_chn[cidx]->id);
channel_idx[layer_channels+1] = cidx; /* Assumes in sane order */
layer_channels += 2; /* RGB, Lab, CMYK etc. */
}
}
else
{
IFDBG(4) g_debug ("Channel %d (id: %d) has no data", cidx, lyr_chn[cidx]->id);
}
}
if (alpha)
{
if (layer_channels <= base_channels)
{
channel_idx[layer_channels] = alpha_chn;
layer_channels++;
}
else
{
channel_idx[base_channels] = alpha_chn;
}
base_channels++;
}
IFDBG(4) g_debug ("Create the layer (group type: %d, clipping group type: %d)",
lyr_a[lidx]->group_type, lyr_a[lidx]->clipping_group_type);
/* Create the layer */
if (lyr_a[lidx]->group_type != 0)
{
if (lyr_a[lidx]->group_type == 3)
{
/* the </Layer group> marker layers are used to
* assemble the layer structure in a single pass
*/
IFDBG(2) g_debug ("Create placeholder group layer");
layer = pika_layer_group_new (image);
/* add this group layer as the new parent */
g_array_append_val (parent_group_stack, layer);
}
else /* group-type == 1 || group_type == 2 */
{
if (parent_group_stack->len)
{
layer = g_array_index (parent_group_stack, PikaLayer *,
parent_group_stack->len - 1);
IFDBG(2) g_debug ("End group layer id %d.", pika_item_get_id (PIKA_ITEM (layer)));
/* since the layers are stored in reverse, the group
* layer start marker actually means we're done with
* that layer group
*/
g_array_remove_index (parent_group_stack,
parent_group_stack->len - 1);
pika_drawable_get_offsets (PIKA_DRAWABLE (layer), &l_x, &l_y);
l_w = pika_drawable_get_width (PIKA_DRAWABLE (layer));
l_h = pika_drawable_get_height (PIKA_DRAWABLE (layer));
}
else
{
IFDBG(1) g_debug ("WARNING: Unmatched group layer start marker.");
layer = NULL;
}
}
}
else
{
if (lyr_a[lidx]->clipping_group_type == 1)
{
clipping_group = add_clipping_group (image, parent_group);
}
if (empty)
{
IFDBG(2) g_debug ("Create blank layer");
}
else
{
IFDBG(2) g_debug ("Create normal layer");
l_x = lyr_a[lidx]->left;
l_y = lyr_a[lidx]->top;
l_w = lyr_a[lidx]->right - lyr_a[lidx]->left;
l_h = lyr_a[lidx]->bottom - lyr_a[lidx]->top;
}
image_type = get_pika_image_type (img_a->base_type, TRUE);
IFDBG(3) g_debug ("Layer type %d", image_type);
layer = pika_layer_new (image, lyr_a[lidx]->name,
l_w, l_h, image_type,
100, PIKA_LAYER_MODE_NORMAL);
}
if (layer != NULL)
{
/* Set the layer name. Note that we do this even for group-end
* markers, to avoid having the default group name collide with
* subsequent layers; the real group name is set by the group
* start marker.
*/
if (lyr_a[lidx]->name)
pika_item_set_name (PIKA_ITEM (layer), lyr_a[lidx]->name);
/* Set the layer properties (skip this for layer group end
* markers; we set their properties when processing the start
* marker.)
*/
if (lyr_a[lidx]->group_type != 3)
{
/* Mode */
psd_to_pika_blend_mode (lyr_a[lidx], &mode_info);
pika_layer_set_mode (layer, mode_info.mode);
pika_layer_set_blend_space (layer, mode_info.blend_space);
pika_layer_set_composite_space (layer, mode_info.composite_space);
pika_layer_set_composite_mode (layer, mode_info.composite_mode);
/* Opacity */
pika_layer_set_opacity (layer,
lyr_a[lidx]->opacity * 100.0 / 255.0);
/* Flags */
pika_layer_set_lock_alpha (layer, lyr_a[lidx]->layer_flags.trans_prot);
pika_item_set_visible (PIKA_ITEM (layer), lyr_a[lidx]->layer_flags.visible);
#if 0
/* according to the spec, the 'irrelevant' flag indicates
* that the layer's "pixel data is irrelevant to the
* appearance of the document". what this seems to mean is
* not that the layer doesn't contribute to the image, but
* rather that its appearance can be entirely derived from
* sources other than the pixel data, such as vector data.
* in particular, this doesn't mean that the layer is
* invisible. since we only support raster layers atm, we can
* just ignore this flag.
*/
if (lyr_a[lidx]->layer_flags.irrelevant &&
lyr_a[lidx]->group_type == 0)
{
pika_item_set_visible (PIKA_ITEM (layer), FALSE);
}
#endif
/* Position */
if (l_x != 0 || l_y != 0)
pika_layer_set_offsets (layer, l_x, l_y);
/* Color tag */
pika_item_set_color_tag (PIKA_ITEM (layer),
psd_to_pika_layer_color_tag (lyr_a[lidx]->color_tag[0]));
/* Tattoo */
if (lyr_a[lidx]->id)
pika_item_set_tattoo (PIKA_ITEM (layer), lyr_a[lidx]->id);
/* For layer groups, expand or collapse the group */
if (lyr_a[lidx]->group_type != 0)
{
pika_item_set_expanded (PIKA_ITEM (layer),
lyr_a[lidx]->group_type == 1);
}
}
/* Remember the selected layers:
* - Layer Selection ID(s) (0x042D) are prioritary;
* - Layer state information (0x0400) is used instead
* otherwise.
*/
if (img_a->layer_selection)
{
if (g_list_find (img_a->layer_selection, GINT_TO_POINTER (lyr_a[lidx]->id)) != NULL)
{
selected_layers = g_list_prepend (selected_layers, layer);
}
}
else if (lidx == img_a->layer_state)
{
selected_layers = g_list_prepend (selected_layers, layer);
}
/* Set the layer data */
if (lyr_a[lidx]->group_type == 0)
{
IFDBG(3) g_debug ("Draw layer");
if (empty)
{
pika_drawable_fill (PIKA_DRAWABLE (layer), PIKA_FILL_TRANSPARENT);
}
else
{
GeglBufferIterator *iter;
bps = img_a->bps / 8;
if (bps == 0)
bps++;
buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (layer));
iter = gegl_buffer_iterator_new (
buffer, NULL, 0, get_layer_format (img_a, alpha),
GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 1);
while (gegl_buffer_iterator_next (iter))
{
const GeglRectangle *roi = &iter->items[0].roi;
guint8 *dst0 = iter->items[0].data;
gint src_step = bps;
gint dst_step = bps * base_channels;
if (img_a->color_mode == PSD_CMYK || img_a->color_mode == PSD_LAB)
{
dst0 = gegl_scratch_alloc (base_channels * bps *
iter->length);
}
for (cidx = 0; cidx < base_channels; ++cidx)
{
gint b;
if (roi->x == 0 && roi->y == 0)
IFDBG(3) g_debug ("Start channel %d", channel_idx[cidx]);
for (b = 0; b < bps; ++b)
{
guint8 *dst;
gint y;
dst = &dst0[cidx * bps + b];
for (y = 0; y < roi->height; y++)
{
const guint8 *src;
gint x;
src = (const guint8 *)
&lyr_chn[channel_idx[cidx]]->data[
((roi->y + y) * l_w +
roi->x) * bps +
b];
for (x = 0; x < roi->width; ++x)
{
*dst = *src;
src += src_step;
dst += dst_step;
}
}
}
}
if (img_a->color_mode == PSD_CMYK)
{
psd_convert_cmyk_to_srgb (
img_a,
iter->items[0].data, dst0,
roi->width, roi->height,
alpha, error);
gegl_scratch_free (dst0);
}
else if (img_a->color_mode == PSD_LAB)
{
psd_convert_lab_to_srgb (
img_a,
iter->items[0].data, dst0,
roi->width, roi->height,
alpha);
gegl_scratch_free (dst0);
}
}
for (cidx = 0; cidx < layer_channels; ++cidx)
g_free (lyr_chn[channel_idx[cidx]]->data);
g_object_unref (buffer);
}
}
/* Layer mask */
if (user_mask && lyr_a[lidx]->group_type != 3)
{
if (empty_mask)
{
IFDBG(3) g_debug ("Create empty mask");
if (lyr_a[lidx]->layer_mask.def_color == 255)
mask = pika_layer_create_mask (layer,
PIKA_ADD_MASK_WHITE);
else
mask = pika_layer_create_mask (layer,
PIKA_ADD_MASK_BLACK);
pika_layer_add_mask (layer, mask);
pika_layer_set_apply_mask (layer,
! lyr_a[lidx]->layer_mask.mask_flags.disabled);
}
else
{
GeglRectangle mask_rect;
/* Load layer mask data */
lm_x = lyr_a[lidx]->layer_mask.left - l_x;
lm_y = lyr_a[lidx]->layer_mask.top - l_y;
lm_w = lyr_a[lidx]->layer_mask.right - lyr_a[lidx]->layer_mask.left;
lm_h = lyr_a[lidx]->layer_mask.bottom - lyr_a[lidx]->layer_mask.top;
IFDBG(3) g_debug ("Mask channel index %d", user_mask_chn);
IFDBG(3) g_debug ("Original Mask %d %d %d %d", lm_x, lm_y, lm_w, lm_h);
/* Crop mask at layer boundary, and draw layer mask data,
* if any
*/
if (gegl_rectangle_intersect (
&mask_rect,
GEGL_RECTANGLE (0, 0, l_w, l_h),
GEGL_RECTANGLE (lm_x, lm_y, lm_w, lm_h)))
{
IFDBG(3) g_debug ("Layer %d %d %d %d", l_x, l_y, l_w, l_h);
IFDBG(3) g_debug ("Mask %d %d %d %d",
mask_rect.x, mask_rect.y,
mask_rect.width, mask_rect.height);
if (lyr_a[lidx]->layer_mask.def_color == 255)
mask = pika_layer_create_mask (layer,
PIKA_ADD_MASK_WHITE);
else
mask = pika_layer_create_mask (layer,
PIKA_ADD_MASK_BLACK);
bps = img_a->bps / 8;
if (bps == 0)
bps++;
IFDBG(3) g_debug ("New layer mask %d", pika_item_get_id (PIKA_ITEM (mask)));
pika_layer_add_mask (layer, mask);
buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (mask));
gegl_buffer_set (buffer,
&mask_rect,
0, get_mask_format (img_a),
lyr_chn[user_mask_chn]->data + (
(mask_rect.y - lm_y) * lm_w +
(mask_rect.x - lm_x)) * bps,
lm_w * bps);
g_object_unref (buffer);
pika_layer_set_apply_mask (layer,
! lyr_a[lidx]->layer_mask.mask_flags.disabled);
}
g_free (lyr_chn[user_mask_chn]->data);
}
}
/* Insert the layer */
if (lyr_a[lidx]->group_type == 0 || /* normal layer */
lyr_a[lidx]->group_type == 3 /* group layer end marker */)
{
if (clipping_group)
{
pika_image_insert_layer (image, layer, clipping_group, 0);
if (lyr_a[lidx]->clipping_group_type == 2)
{
/* End of our clipping group. */
clipping_group = NULL;
}
}
else
{
pika_image_insert_layer (image, layer, parent_group, 0);
}
}
}
free_lyr_chn (lyr_chn, lyr_a[lidx]->num_channels);
}
g_free (lyr_a[lidx]->chn_info);
g_free (lyr_a[lidx]->name);
g_free (lyr_a[lidx]);
}
g_free (lyr_a);
g_array_free (parent_group_stack, FALSE);
/* Set the selected layers */
pika_image_take_selected_layers (image, selected_layers);
g_list_free (img_a->layer_selection);
return 0;
}
static gint
add_merged_image (PikaImage *image,
PSDimage *img_a,
GInputStream *input,
GError **error)
{
PSDchannel chn_a[MAX_CHANNELS];
gchar *alpha_name;
guchar *pixels;
guint16 comp_mode = 0;
guint16 base_channels;
guint16 extra_channels;
guint16 total_channels;
guint16 bps;
guint32 *rle_pack_len[MAX_CHANNELS];
guint32 alpha_id;
gint32 layer_size;
PikaLayer *layer = NULL;
PikaChannel *channel = NULL;
gint16 alpha_opacity;
gint cidx; /* Channel index */
gint rowi; /* Row index */
gint offset;
gint i;
gboolean alpha_visible;
gboolean alpha_channel = FALSE;
gboolean original_mode_CMYK = FALSE;
GeglBuffer *buffer;
PikaImageType image_type;
PikaRGB alpha_rgb;
total_channels = img_a->channels;
extra_channels = 0;
bps = img_a->bps / 8;
if (bps == 0)
bps++;
if ((img_a->color_mode == PSD_BITMAP ||
img_a->color_mode == PSD_MULTICHANNEL ||
img_a->color_mode == PSD_GRAYSCALE ||
img_a->color_mode == PSD_DUOTONE ||
img_a->color_mode == PSD_INDEXED) &&
total_channels > 1)
{
extra_channels = total_channels - 1;
}
else if ((img_a->color_mode == PSD_RGB ||
img_a->color_mode == PSD_LAB) &&
total_channels > 3)
{
extra_channels = total_channels - 3;
}
else if ((img_a->color_mode == PSD_CMYK) &&
total_channels > 4)
{
extra_channels = total_channels - 4;
}
if (img_a->merged_image_only &&
img_a->color_mode == PSD_CMYK &&
img_a->num_layers > 0)
{
/* In this case there is no conversion. Merged image is RGB. */
img_a->color_mode = PSD_RGB;
original_mode_CMYK = TRUE;
if (! img_a->transparency)
{
total_channels--;
}
}
if (extra_channels > 0)
{
if (img_a->transparency)
{
extra_channels--;
}
else if (img_a->alpha_names)
{
gchar *alpha_name;
/* If first alpha_name is Transparency consider it the alpha channel. */
alpha_name = g_ptr_array_index (img_a->alpha_names, 0);
if (! g_strcmp0 (alpha_name, "Transparency"))
{
alpha_channel = TRUE;
extra_channels--;
IFDBG(3) g_debug ("Merged image alpha channel present.");
}
}
}
base_channels = total_channels - extra_channels;
/* ----- Read merged image & extra channel pixel data ----- */
if (img_a->merged_image_only ||
img_a->num_layers == 0 ||
extra_channels > 0)
{
guint32 block_len;
guint32 block_start;
block_start = img_a->merged_image_start;
block_len = img_a->merged_image_len;
if (! psd_seek (input, block_start, G_SEEK_SET, error) ||
psd_read (input, &comp_mode, COMP_MODE_SIZE, error) < COMP_MODE_SIZE)
{
psd_set_error (error);
return -1;
}
comp_mode = GUINT16_FROM_BE (comp_mode);
switch (comp_mode)
{
case PSD_COMP_RAW: /* Planar raw data */
IFDBG(3) g_debug ("Raw data length: %d", block_len);
for (cidx = 0; cidx < total_channels; ++cidx)
{
chn_a[cidx].columns = img_a->columns;
chn_a[cidx].rows = img_a->rows;
if (read_channel_data (&chn_a[cidx], img_a->bps,
PSD_COMP_RAW, NULL, input, 0,
error) < 1)
return -1;
}
break;
case PSD_COMP_RLE: /* Packbits */
/* Image data is stored as packed scanlines in planar order
with all compressed length counters stored first */
{
gint rle_count_size = (img_a->version == 1 ? 2 : 4);
gint rle_row_size = img_a->rows * rle_count_size;
IFDBG(3) g_debug ("RLE length data: %d, RLE data block: %d",
total_channels * rle_row_size,
block_len - (total_channels * rle_row_size));
for (cidx = 0; cidx < total_channels; ++cidx)
{
chn_a[cidx].columns = img_a->columns;
chn_a[cidx].rows = img_a->rows;
rle_pack_len[cidx] = g_malloc (img_a->rows * 4); /* Always 4 since this is the data size in memory. */
for (rowi = 0; rowi < img_a->rows; ++rowi)
{
if (psd_read (input, &rle_pack_len[cidx][rowi], rle_count_size, error) < rle_count_size)
{
psd_set_error (error);
return -1;
}
if (img_a->version == 1)
rle_pack_len[cidx][rowi] = GUINT16_FROM_BE (rle_pack_len[cidx][rowi]);
else
rle_pack_len[cidx][rowi] = GUINT32_FROM_BE (rle_pack_len[cidx][rowi]);
}
}
/* Skip channel length data for unloaded channels */
if (! psd_seek (input, (img_a->channels - total_channels) * rle_row_size,
G_SEEK_CUR, error))
{
psd_set_error (error);
return -1;
}
for (cidx = 0; cidx < total_channels; ++cidx)
{
if (read_channel_data (&chn_a[cidx], img_a->bps,
PSD_COMP_RLE, rle_pack_len[cidx], input, 0,
error) < 1)
return -1;
g_free (rle_pack_len[cidx]);
}
break;
}
case PSD_COMP_ZIP: /* ? */
case PSD_COMP_ZIP_PRED:
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported compression mode: %d"), comp_mode);
return -1;
break;
}
}
/* ----- Draw merged image ----- */
if (img_a->merged_image_only ||
img_a->num_layers == 0) /* Merged image - Photoshop 2 style */
{
image_type = get_pika_image_type (img_a->base_type,
img_a->transparency || alpha_channel);
layer_size = img_a->columns * img_a->rows;
pixels = g_malloc (layer_size * base_channels * bps);
for (cidx = 0; cidx < base_channels; ++cidx)
{
for (i = 0; i < layer_size; ++i)
{
memcpy (&pixels[((i * base_channels) + cidx) * bps],
&chn_a[cidx].data[i * bps], bps);
}
g_free (chn_a[cidx].data);
}
/* Add background layer */
IFDBG(2) g_debug ("Draw merged image");
layer = pika_layer_new (image, _("Background"),
img_a->columns, img_a->rows,
image_type,
100,
pika_image_get_default_new_layer_mode (image));
pika_image_insert_layer (image, layer, NULL, 0);
buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (layer));
if (img_a->color_mode == PSD_CMYK)
{
guchar *dst0;
dst0 = g_malloc (base_channels * layer_size * sizeof(float));
psd_convert_cmyk_to_srgb (img_a,
dst0, pixels,
img_a->columns, img_a->rows,
img_a->transparency || alpha_channel,
error);
g_free (pixels);
pixels = dst0;
}
else if (img_a->color_mode == PSD_LAB)
{
guchar *dst0;
dst0 = g_malloc (base_channels * layer_size * sizeof(float));
psd_convert_lab_to_srgb (img_a,
dst0, pixels,
img_a->columns, img_a->rows,
img_a->transparency || alpha_channel);
g_free (pixels);
pixels = dst0;
}
else if (original_mode_CMYK && img_a->transparency)
{
gint irow;
guchar *dst0, *dst;
guchar *data;
dst0 = g_malloc (base_channels * layer_size * sizeof(guchar));
dst = dst0;
data = pixels;
/* CMYKA layers: 5 channels but merged image is RGBA
* with RGB in the first 3 layers and A in 5th layer.
* Move A to 4th layer. */
for (irow = 0; irow < img_a->rows; irow++)
{
gint icol;
for (icol = 0; icol < img_a->columns; icol++)
{
dst[0] = data[0];
dst[1] = data[1];
dst[2] = data[2];
dst[3] = data[4];
dst += 4;
data += 5;
}
}
g_free (pixels);
pixels = dst0;
}
gegl_buffer_set (buffer,
GEGL_RECTANGLE (0, 0,
gegl_buffer_get_width (buffer),
gegl_buffer_get_height (buffer)),
0, get_layer_format (img_a,
img_a->transparency ||
alpha_channel),
pixels, GEGL_AUTO_ROWSTRIDE);
if (img_a->color_mode == PSD_CMYK)
img_a->color_mode = PSD_RGB;
/* Merged image data is blended against white. Unblend it. */
if (img_a->transparency)
{
GeglBufferIterator *iter;
IFDBG(4) g_debug ("Unblend merged transparency");
iter = gegl_buffer_iterator_new (buffer, NULL, 0,
babl_format ("R'G'B'A float"),
GEGL_ACCESS_READWRITE,
GEGL_ABYSS_NONE, 1);
while (gegl_buffer_iterator_next (iter))
{
gfloat *data = iter->items[0].data;
for (i = 0; i < iter->length; i++)
{
gint c;
if (data[3])
{
for (c = 0; c < 3; c++)
data[c] = (data[c] + data[3] - 1.0f) / data[3];
}
data += 4;
}
}
}
g_object_unref (buffer);
g_free (pixels);
}
else
{
/* Free merged image data for layered image */
if (extra_channels)
for (cidx = 0; cidx < base_channels; ++cidx)
g_free (chn_a[cidx].data);
}
if (img_a->transparency)
{
/* Free "Transparency" channel name */
if (img_a->alpha_names)
{
alpha_name = g_ptr_array_index (img_a->alpha_names, 0);
if (alpha_name)
g_free (alpha_name);
}
}
/* ----- Draw extra alpha channels ----- */
if (extra_channels /* Extra alpha channels */
&& image)
{
IFDBG(2) g_debug ("Add extra channels");
pixels = g_malloc(0);
/* Get channel resource data */
if (img_a->transparency)
offset = 1;
else
offset = 0;
/* Draw channels */
IFDBG(2) g_debug ("Number of channels: %d", extra_channels);
for (i = 0; i < extra_channels; ++i)
{
/* Alpha channel name */
alpha_name = NULL;
alpha_visible = FALSE;
/* Quick mask channel*/
if (img_a->quick_mask_id)
if (i == img_a->quick_mask_id - base_channels + offset)
{
/* Free "Quick Mask" channel name */
alpha_name = g_ptr_array_index (img_a->alpha_names, i + offset);
if (alpha_name)
g_free (alpha_name);
alpha_name = g_strdup (PIKA_IMAGE_QUICK_MASK_NAME);
alpha_visible = TRUE;
}
if (! alpha_name && img_a->alpha_names)
if (offset < img_a->alpha_names->len
&& i + offset <= img_a->alpha_names->len)
alpha_name = g_ptr_array_index (img_a->alpha_names, i + offset);
if (! alpha_name)
alpha_name = g_strdup (_("Extra"));
if (offset < img_a->alpha_id_count &&
offset + i <= img_a->alpha_id_count)
alpha_id = img_a->alpha_id[i + offset];
else
alpha_id = 0;
if (offset < img_a->alpha_display_count &&
i + offset <= img_a->alpha_display_count)
{
alpha_rgb = img_a->alpha_display_info[i + offset]->pika_color;
alpha_opacity = img_a->alpha_display_info[i + offset]->opacity;
}
else
{
pika_rgba_set (&alpha_rgb, 1.0, 0.0, 0.0, 1.0);
alpha_opacity = 50;
}
cidx = base_channels + i;
pixels = g_realloc (pixels, chn_a[cidx].columns * chn_a[cidx].rows * bps);
memcpy (pixels, chn_a[cidx].data, chn_a[cidx].columns * chn_a[cidx].rows * bps);
channel = pika_channel_new (image, alpha_name,
chn_a[cidx].columns, chn_a[cidx].rows,
alpha_opacity, &alpha_rgb);
pika_image_insert_channel (image, channel, NULL, i);
g_free (alpha_name);
buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (channel));
if (alpha_id)
pika_item_set_tattoo (PIKA_ITEM (channel), alpha_id);
pika_item_set_visible (PIKA_ITEM (channel), alpha_visible);
gegl_buffer_set (buffer,
GEGL_RECTANGLE (0, 0,
gegl_buffer_get_width (buffer),
gegl_buffer_get_height (buffer)),
0, get_channel_format (img_a),
pixels, GEGL_AUTO_ROWSTRIDE);
g_object_unref (buffer);
g_free (chn_a[cidx].data);
}
g_free (pixels);
if (img_a->alpha_names)
g_ptr_array_free (img_a->alpha_names, TRUE);
if (img_a->alpha_id)
g_free (img_a->alpha_id);
if (img_a->alpha_display_info)
{
for (cidx = 0; cidx < img_a->alpha_display_count; ++cidx)
g_free (img_a->alpha_display_info[cidx]);
g_free (img_a->alpha_display_info);
}
}
/* FIXME pika image tattoo state */
return 0;
}
/* Local utility functions */
static PikaLayer *
add_clipping_group (PikaImage *image,
PikaLayer *parent)
{
PikaLayer * clipping_group = NULL;
/* We need to create a group because PIKA handles clipping and
* composition mode in a different manner than PS. */
IFDBG(2) g_debug ("Creating a layer group to handle PS transparency clipping correctly.");
clipping_group = pika_layer_group_new (image);
pika_item_set_name (PIKA_ITEM (clipping_group), "Group added by PIKA");
pika_layer_set_blend_space (clipping_group, PIKA_LAYER_COLOR_SPACE_RGB_PERCEPTUAL);
pika_layer_set_composite_space (clipping_group, PIKA_LAYER_COLOR_SPACE_RGB_PERCEPTUAL);
pika_layer_set_composite_mode (clipping_group, PIKA_LAYER_COMPOSITE_UNION);
pika_image_insert_layer (image, clipping_group, parent, 0);
return clipping_group;
}
static gchar *
get_psd_color_mode_name (PSDColorMode mode)
{
static gchar * const psd_color_mode_names[] =
{
"BITMAP",
"GRAYSCALE",
"INDEXED",
"RGB",
"CMYK",
"UNKNOWN (5)",
"UNKNOWN (6)",
"MULTICHANNEL",
"DUOTONE",
"LAB"
};
static gchar *err_name = NULL;
if (mode >= PSD_BITMAP && mode <= PSD_LAB)
return psd_color_mode_names[mode];
g_free (err_name);
err_name = g_strdup_printf ("UNKNOWN (%d)", mode);
return err_name;
}
static void
psd_to_pika_color_map (guchar *map256)
{
guchar *tmpmap;
gint i;
tmpmap = g_malloc (3 * 256);
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];
}
memcpy (map256, tmpmap, 3 * 256);
g_free (tmpmap);
}
static PikaImageType
get_pika_image_type (PikaImageBaseType image_base_type,
gboolean alpha)
{
PikaImageType image_type;
switch (image_base_type)
{
case PIKA_GRAY:
image_type = (alpha) ? PIKA_GRAYA_IMAGE : PIKA_GRAY_IMAGE;
break;
case PIKA_INDEXED:
image_type = (alpha) ? PIKA_INDEXEDA_IMAGE : PIKA_INDEXED_IMAGE;
break;
case PIKA_RGB:
image_type = (alpha) ? PIKA_RGBA_IMAGE : PIKA_RGB_IMAGE;
break;
default:
image_type = -1;
break;
}
return image_type;
}
static voidpf
zzalloc (voidpf opaque, uInt items, uInt size)
{
/* overflow check missing */
return g_malloc (items * size);
}
static void
zzfree (voidpf opaque, voidpf address)
{
g_free (address);
}
static gint
read_channel_data (PSDchannel *channel,
guint16 bps,
guint16 compression,
const guint32 *rle_pack_len,
GInputStream *input,
guint32 comp_len,
GError **error)
{
gchar *raw_data = NULL;
gchar *src;
guint32 readline_len;
gint i, j;
if (bps == 1)
readline_len = ((channel->columns + 7) / 8);
else
readline_len = (channel->columns * bps / 8);
IFDBG(4) g_debug ("raw data size %d x %d = %d", readline_len,
channel->rows, readline_len * channel->rows);
/* sanity check, int overflow check (avoid divisions by zero) */
if ((channel->rows == 0) || (channel->columns == 0) ||
(channel->rows > G_MAXINT32 / channel->columns / MAX (bps / 8, 1)))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported or invalid channel size"));
return -1;
}
raw_data = g_malloc (readline_len * channel->rows);
switch (compression)
{
case PSD_COMP_RAW:
if (psd_read (input, raw_data, readline_len * channel->rows, error) < readline_len * channel->rows)
{
psd_set_error (error);
g_free (raw_data);
return -1;
}
break;
case PSD_COMP_RLE:
for (i = 0; i < channel->rows; ++i)
{
src = gegl_scratch_alloc (rle_pack_len[i]);
/* FIXME check for over-run
if (PSD_TELL(input) + rle_pack_len[i] > block_end)
{
psd_set_error (TRUE, errno, error);
return -1;
}
*/
if (psd_read (input, src, rle_pack_len[i], error) < rle_pack_len[i])
{
psd_set_error (error);
gegl_scratch_free (src);
g_free (raw_data);
return -1;
}
/* FIXME check for errors returned from decode packbits */
decode_packbits (src, raw_data + i * readline_len,
rle_pack_len[i], readline_len);
gegl_scratch_free (src);
}
break;
case PSD_COMP_ZIP:
case PSD_COMP_ZIP_PRED:
{
z_stream zs;
src = g_malloc (comp_len);
if (psd_read (input, src, comp_len, error) < comp_len)
{
psd_set_error (error);
g_free (src);
g_free (raw_data);
return -1;
}
zs.next_in = (guchar*) src;
zs.avail_in = comp_len;
zs.next_out = (guchar*) raw_data;
zs.avail_out = readline_len * channel->rows;
zs.zalloc = zzalloc;
zs.zfree = zzfree;
if (inflateInit (&zs) == Z_OK &&
inflate (&zs, Z_FINISH) == Z_STREAM_END)
{
inflateEnd (&zs);
}
else
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Failed to decompress data"));
g_free (src);
g_free (raw_data);
return -1;
}
g_free (src);
break;
}
}
/* Convert channel data to PIKA format */
switch (bps)
{
case 32:
{
guint32 *data;
guint64 pos;
if (compression == PSD_COMP_ZIP_PRED)
{
IFDBG(3) g_debug ("Converting 32 bit predictor data");
channel->data = (gchar *) g_malloc0 (channel->rows * channel->columns * 4);
decode_32_bit_predictor (raw_data, channel->data,
channel->rows, channel->columns);
}
else
{
IFDBG(3) g_debug ("32 bit channel data without predictor");
channel->data = raw_data;
raw_data = NULL;
}
data = (guint32*) channel->data;
for (pos = 0; pos < channel->rows * channel->columns; ++pos)
data[pos] = GUINT32_FROM_BE (data[pos]);
break;
}
case 16:
{
guint16 *data = (guint16*) raw_data;
channel->data = raw_data;
raw_data = NULL;
for (i = 0; i < channel->rows * channel->columns; ++i)
data[i] = GUINT16_FROM_BE (data[i]);
if (compression == PSD_COMP_ZIP_PRED)
{
IFDBG(3) g_debug ("Converting 16 bit predictor data");
for (i = 0; i < channel->rows; ++i)
for (j = 1; j < channel->columns; ++j)
data[i * channel->columns + j] += data[i * channel->columns + j - 1];
}
break;
}
case 8:
channel->data = raw_data;
raw_data = NULL;
if (compression == PSD_COMP_ZIP_PRED)
{
IFDBG(3) g_debug ("Converting 8 bit predictor data");
for (i = 0; i < channel->rows; ++i)
for (j = 1; j < channel->columns; ++j)
channel->data[i * channel->columns + j] += channel->data[i * channel->columns + j - 1];
}
break;
case 1:
channel->data = (gchar *) g_malloc (channel->rows * channel->columns);
convert_1_bit (raw_data, channel->data, channel->rows, channel->columns);
break;
default:
g_free (raw_data);
return -1;
break;
}
g_free (raw_data);
return 1;
}
/*
* For reference on zip predictor see:
* - TIFFTN3d1.pdf
* - psd_tools
*/
static void
decode_32_bit_predictor (gchar *src,
gchar *dst,
guint32 rows,
guint32 columns)
{
guint32 rowsize;
guint64 row, dstpos;
rowsize = columns * 4;
/* decode delta */
for (row = 0; row < rows; ++row)
{
guint32 j;
guint64 offset;
offset = row * rowsize;
for (j = 0; j < rowsize-1; ++j)
{
guint64 pos;
pos = offset + j;
src[pos + 1] += src[pos];
}
}
/* restore byte order */
dstpos = 0;
for (row = 0; row < rows * rowsize; row += rowsize)
{
guint64 offset;
for (offset = row; offset < row + columns; offset++)
{
guint64 x;
for (x = offset; x < offset + rowsize; x += columns)
{
dst[dstpos] = src[x];
dstpos++;
}
}
}
}
static void
convert_1_bit (const gchar *src,
gchar *dst,
guint32 rows,
guint32 columns)
{
/* Convert bits to bytes left to right by row.
Rows are padded out to a byte boundary.
*/
guint32 row_pos = 0;
gint i, j;
IFDBG(3) g_debug ("Start 1 bit conversion");
for (i = 0; i < rows * ((columns + 7) / 8); ++i)
{
guchar mask = 0x80;
for (j = 0; j < 8 && row_pos < columns; ++j)
{
*dst = (*src & mask) ? 0 : 1;
IFDBG(4) g_debug ("byte %d, bit %d, offset %d, src %d, dst %d",
i , j, row_pos, *src, *dst);
dst++;
mask >>= 1;
row_pos++;
}
if (row_pos >= columns)
row_pos = 0;
src++;
}
IFDBG(3) g_debug ("End 1 bit conversion");
}
static const Babl*
get_layer_format (PSDimage *img_a,
gboolean alpha)
{
const Babl *format = NULL;
switch (get_pika_image_type (img_a->base_type, alpha))
{
case PIKA_GRAY_IMAGE:
switch (img_a->bps)
{
case 32:
format = babl_format ("Y' float");
break;
case 16:
format = babl_format ("Y' u16");
break;
case 8:
case 1:
format = babl_format ("Y' u8");
break;
default:
return NULL;
break;
}
break;
case PIKA_GRAYA_IMAGE:
switch (img_a->bps)
{
case 32:
format = babl_format ("Y'A float");
break;
case 16:
format = babl_format ("Y'A u16");
break;
case 8:
case 1:
format = babl_format ("Y'A u8");
break;
default:
return NULL;
break;
}
break;
case PIKA_RGB_IMAGE:
switch (img_a->bps)
{
case 32:
format = babl_format ("R'G'B' float");
break;
case 16:
format = babl_format (img_a->color_mode == PSD_CMYK ? "R'G'B' float" : "R'G'B' u16");
break;
case 8:
case 1:
format = babl_format ((img_a->color_mode == PSD_CMYK || img_a->color_mode == PSD_LAB) ?
"R'G'B' float" : "R'G'B' u8");
break;
default:
return NULL;
break;
}
break;
case PIKA_RGBA_IMAGE:
switch (img_a->bps)
{
case 32:
format = babl_format ("R'G'B'A float");
break;
case 16:
format = babl_format (img_a->color_mode == PSD_CMYK ? "R'G'B'A float" : "R'G'B'A u16");
break;
case 8:
case 1:
format = babl_format ((img_a->color_mode == PSD_CMYK || img_a->color_mode == PSD_LAB) ?
"R'G'B'A float" : "R'G'B'A u8");
break;
default:
return NULL;
break;
}
break;
default:
return NULL;
break;
}
return format;
}
static const Babl*
get_channel_format (PSDimage *img_a)
{
const Babl *format = NULL;
switch (img_a->bps)
{
case 32:
format = babl_format ("Y float");
break;
case 16:
format = babl_format ("Y u16");
break;
case 8:
case 1:
/* see pika_image_get_channel_format() */
format = babl_format ("Y' u8");
break;
default:
break;
}
return format;
}
static const Babl*
get_mask_format (PSDimage *img_a)
{
const Babl *format = NULL;
switch (img_a->bps)
{
case 32:
format = babl_format ("Y float");
break;
case 16:
format = babl_format ("Y u16");
break;
case 8:
case 1:
format = babl_format ("Y u8");
break;
default:
break;
}
return format;
}
static void
initialize_unsupported (PSDSupport *unsupported_features)
{
unsupported_features->show_gui = FALSE;
unsupported_features->duotone_mode = FALSE;
unsupported_features->adjustment_layer = FALSE;
unsupported_features->fill_layer = FALSE;
unsupported_features->text_layer = FALSE;
unsupported_features->linked_layer = FALSE;
unsupported_features->vector_mask = FALSE;
unsupported_features->smart_object = FALSE;
unsupported_features->stroke = FALSE;
unsupported_features->layer_effect = FALSE;
unsupported_features->layer_comp = FALSE;
unsupported_features->psd_metadata = FALSE;
}
void
load_dialog (const gchar *title,
PSDSupport *unsupported_features)
{
GtkWidget *dialog;
GtkWidget *label;
GtkWidget *vbox;
dialog = pika_dialog_new (title,
"import-psd",
NULL, 0, NULL, NULL,
_("_OK"), GTK_RESPONSE_OK,
NULL);
pika_window_set_transient (GTK_WINDOW (dialog));
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
/* Duotone import notification */
if (unsupported_features->duotone_mode)
{
gchar *label_text;
label_text = g_strdup_printf ("<b>%s</b>\n%s", _("Duotone Import"),
_("Image will be imported as Grayscale.\n"
"Duotone color space data has been saved\n"
"and can be reapplied on export."));
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label), label_text);
gtk_label_set_selectable (GTK_LABEL (label), TRUE);
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_label_set_yalign (GTK_LABEL (label), 0.0);
gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
gtk_widget_show (label);
g_free (label_text);
}
if (unsupported_features->show_gui)
{
GtkWidget *scrolled_window;
GtkWidget *title_label;
gchar *message = g_strdup ("");
gchar *title = g_strdup_printf ("<b>%s</b>\n%s\n",
_("Compatibility Notice"),
_("This PSD file contains features "
"that\nare not yet fully supported "
"in PIKA:"));
title_label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (title_label), title);
gtk_label_set_justify (GTK_LABEL (title_label), GTK_JUSTIFY_LEFT);
gtk_label_set_line_wrap (GTK_LABEL (title_label), TRUE);
gtk_label_set_yalign (GTK_LABEL (title_label), 0.0);
gtk_box_pack_start (GTK_BOX (vbox), title_label, FALSE, FALSE, 0);
gtk_widget_show (title_label);
#define ADD_UNSUPPORTED_MESSAGE(message, text) \
{ \
gchar *old_message = message; \
message = g_strdup_printf ("%s\n\xE2\x80\xA2 %s", old_message, \
_(text)); \
g_free (old_message); \
} \
if (unsupported_features->adjustment_layer)
ADD_UNSUPPORTED_MESSAGE (message,
"Adjustment layers are not yet "
"supported and will be dropped.");
if (unsupported_features->psd_metadata)
ADD_UNSUPPORTED_MESSAGE (message,
"Metadata non-raster layers are "
"not yet supported and will be dropped.");
if (unsupported_features->fill_layer)
ADD_UNSUPPORTED_MESSAGE (message,
"Fill layers are partially "
"supported and will be converted "
"to raster layers.");
if (unsupported_features->text_layer)
ADD_UNSUPPORTED_MESSAGE (message,
"Text layers are partially "
"supported and will be converted "
"to raster layers.");
if (unsupported_features->linked_layer)
ADD_UNSUPPORTED_MESSAGE (message,
"Linked layers are not yet "
"supported and will be dropped.");
if (unsupported_features->vector_mask)
ADD_UNSUPPORTED_MESSAGE (message,
"Vector masks are partially "
"supported and will be converted "
"to raster layers.");
if (unsupported_features->stroke)
ADD_UNSUPPORTED_MESSAGE (message,
"Vector strokes are not yet "
"supported and will be dropped.");
if (unsupported_features->layer_effect)
ADD_UNSUPPORTED_MESSAGE (message,
"Layer effects are not yet "
"supported and will be dropped.");
if (unsupported_features->smart_object)
ADD_UNSUPPORTED_MESSAGE (message,
"Smart objects are not yet "
"supported and will be dropped.");
if (unsupported_features->layer_comp)
ADD_UNSUPPORTED_MESSAGE (message,
/* Translators: short for layer compositions */
"Layer comps are not yet "
"supported and will be dropped.");
#undef ADD_UNSUPPORTED_MESSAGE
scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_set_size_request (scrolled_window, -1, 100);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window), GTK_SHADOW_OUT);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_POLICY_NEVER,
GTK_POLICY_AUTOMATIC);
gtk_box_pack_start (GTK_BOX (vbox), scrolled_window, TRUE, TRUE, 0);
gtk_widget_show (scrolled_window);
label = gtk_label_new (NULL);
gtk_label_set_markup (GTK_LABEL (label), message);
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_label_set_yalign (GTK_LABEL (label), 0.0);
gtk_container_add (GTK_CONTAINER (scrolled_window), label);
gtk_widget_show (label);
g_free (title);
g_free (message);
}
gtk_widget_show (dialog);
/* run the dialog */
pika_dialog_run (PIKA_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
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