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PIKApp/plug-ins/common/file-psp.c

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/* PIKA plug-in to load and export Paint Shop Pro files (.PSP and .TUB)
*
* Copyright (C) 1999 Tor Lillqvist
*
* 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/>.
*/
/*
*
* Work in progress! Doesn't handle exporting yet.
*
* For a copy of the PSP file format documentation, surf to
* http://www.jasc.com.
*
*/
#define LOAD_PROC "file-psp-load"
#define SAVE_PROC "file-psp-save"
#define PLUG_IN_BINARY "file-psp"
#define PLUG_IN_ROLE "pika-file-psp"
/* set to the level of debugging output you want, 0 for none */
#define PSP_DEBUG 0
#define IFDBG(level) if (PSP_DEBUG >= level)
#include "config.h"
#include <errno.h>
#include <string.h>
#include <zlib.h>
#include <glib/gstdio.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include <libpikabase/pikaparasiteio.h>
#include "libpika/stdplugins-intl.h"
/* Note that the upcoming PSP version 6 writes PSP file format version
* 4.0, but the documentation for that apparently isn't publicly
* available (yet). The format is luckily designed to be somwehat
* downward compatible, however. The semantics of many of the
* additional fields and block types can be relatively easily reverse
* engineered.
*/
/* The following was cut and pasted from the PSP file format
* documentation version 3.0.(Minor stylistic changes done.)
*
*
* To be on the safe side, here is the whole copyright notice from the
* specification:
*
* The Paint Shop Pro File Format Specification (the Specification) is
* copyright 1998 by Jasc Software, Inc. Jasc grants you a
* nonexclusive license to use the Specification for the sole purposes
* of developing software products(s) incorporating the
* Specification. You are also granted the right to identify your
* software product(s) as incorporating the Paint Shop Pro Format
* (PSP) provided that your software in incorporating the
* Specification complies with the terms, definitions, constraints and
* specifications contained in the Specification and subject to the
* following: DISCLAIMER OF WARRANTIES. THE SPECIFICATION IS PROVIDED
* AS IS. JASC DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT.
*
* You are solely responsible for the selection, use, efficiency and
* suitability of the Specification for your software products. OTHER
* WARRANTIES EXCLUDED. JASC SHALL NOT BE LIABLE FOR ANY DIRECT,
* INDIRECT, CONSEQUENTIAL, EXEMPLARY, PUNITIVE OR INCIDENTAL DAMAGES
* ARISING FROM ANY CAUSE EVEN IF JASC HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES. CERTAIN JURISDICTIONS DO NOT PERMIT
* THE LIMITATION OR EXCLUSION OF INCIDENTAL DAMAGES, SO THIS
* LIMITATION MAY NOT APPLY TO YOU. IN NO EVENT WILL JASC BE LIABLE
* FOR ANY AMOUNT GREATER THAN WHAT YOU ACTUALLY PAID FOR THE
* SPECIFICATION. Should any warranties be found to exist, such
* warranties shall be limited in duration to ninety (90) days
* following the date you receive the Specification.
*
* Indemnification. By your inclusion of the Paint Shop Pro File
* Format in your software product(s) you agree to indemnify and hold
* Jasc Software, Inc. harmless from any and all claims of any kind or
* nature made by any of your customers with respect to your software
* product(s).
*
* Export Laws. You agree that you and your customers will not export
* your software or Specification except in compliance with the laws
* and regulations of the United States.
*
* US Government Restricted Rights. The Specification and any
* accompanying materials are provided with Restricted Rights. Use,
* duplication or disclosure by the Government is subject to
* restrictions as set forth in subparagraph (c)(1)(ii) of The Rights
* in Technical Data and Computer Software clause at DFARS
* 252.227-7013, or subparagraphs (c)(1) and (2) of the Commercial
* Computer Software - Restricted Rights at 48 CFR 52.227-19, as
* applicable. Contractor/manufacturer is Jasc Software, Inc., PO Box
* 44997, Eden Prairie MN 55344.
*
* Jasc reserves the right to amend, modify, change, revoke or
* withdraw the Specification at any time and from time to time. Jasc
* shall have no obligation to support or maintain the Specification.
*/
/* Block identifiers.
*/
typedef enum {
PSP_IMAGE_BLOCK = 0, /* General Image Attributes Block (main) */
PSP_CREATOR_BLOCK, /* Creator Data Block (main) */
PSP_COLOR_BLOCK, /* Color Palette Block (main and sub) */
PSP_LAYER_START_BLOCK, /* Layer Bank Block (main) */
PSP_LAYER_BLOCK, /* Layer Block (sub) */
PSP_CHANNEL_BLOCK, /* Channel Block (sub) */
PSP_SELECTION_BLOCK, /* Selection Block (main) */
PSP_ALPHA_BANK_BLOCK, /* Alpha Bank Block (main) */
PSP_ALPHA_CHANNEL_BLOCK, /* Alpha Channel Block (sub) */
PSP_THUMBNAIL_BLOCK, /* Thumbnail Block (main) */
PSP_EXTENDED_DATA_BLOCK, /* Extended Data Block (main) */
PSP_TUBE_BLOCK, /* Picture Tube Data Block (main) */
PSP_ADJUSTMENT_EXTENSION_BLOCK, /* Adjustment Layer Extension Block (sub) (since PSP6)*/
PSP_VECTOR_EXTENSION_BLOCK, /* Vector Layer Extension Block (sub) (since PSP6) */
PSP_SHAPE_BLOCK, /* Vector Shape Block (sub) (since PSP6) */
PSP_PAINTSTYLE_BLOCK, /* Paint Style Block (sub) (since PSP6) */
PSP_COMPOSITE_IMAGE_BANK_BLOCK, /* Composite Image Bank (main) (since PSP6) */
PSP_COMPOSITE_ATTRIBUTES_BLOCK, /* Composite Image Attributes (sub) (since PSP6) */
PSP_JPEG_BLOCK, /* JPEG Image Block (sub) (since PSP6) */
PSP_LINESTYLE_BLOCK, /* Line Style Block (sub) (since PSP7) */
PSP_TABLE_BANK_BLOCK, /* Table Bank Block (main) (since PSP7) */
PSP_TABLE_BLOCK, /* Table Block (sub) (since PSP7) */
PSP_PAPER_BLOCK, /* Vector Table Paper Block (sub) (since PSP7) */
PSP_PATTERN_BLOCK, /* Vector Table Pattern Block (sub) (since PSP7) */
PSP_GRADIENT_BLOCK, /* Vector Table Gradient Block (not used) (since PSP8) */
PSP_GROUP_EXTENSION_BLOCK, /* Group Layer Block (sub) (since PSP8) */
PSP_MASK_EXTENSION_BLOCK, /* Mask Layer Block (sub) (since PSP8) */
PSP_BRUSH_BLOCK, /* Brush Data Block (main) (since PSP8) */
PSP_ART_MEDIA_BLOCK, /* Art Media Layer Block (main) (since PSP9) */
PSP_ART_MEDIA_MAP_BLOCK, /* Art Media Layer map data Block (main) (since PSP9) */
PSP_ART_MEDIA_TILE_BLOCK, /* Art Media Layer map tile Block(main) (since PSP9) */
PSP_ART_MEDIA_TEXTURE_BLOCK, /* AM Layer map texture Block (main) (since PSP9) */
PSP_COLORPROFILE_BLOCK, /* ICC Color profile block (since PSP10) */
PSP_RASTER_EXTENSION_BLOCK, /* Assumed name based on usage, probably since PSP11 */
} PSPBlockID;
/* Bitmap type.
*/
typedef enum {
PSP_DIB_IMAGE = 0, /* Layer color bitmap */
PSP_DIB_TRANS_MASK, /* Layer transparency mask bitmap */
PSP_DIB_USER_MASK, /* Layer user mask bitmap */
PSP_DIB_SELECTION, /* Selection mask bitmap */
PSP_DIB_ALPHA_MASK, /* Alpha channel mask bitmap */
PSP_DIB_THUMBNAIL, /* Thumbnail bitmap */
PSP_DIB_THUMBNAIL_TRANS_MASK, /* Thumbnail transparency mask (since PSP6) */
PSP_DIB_ADJUSTMENT_LAYER, /* Adjustment layer bitmap (since PSP6) */
PSP_DIB_COMPOSITE, /* Composite image bitmap (since PSP6) */
PSP_DIB_COMPOSITE_TRANS_MASK, /* Composite image transparency (since PSP6) */
PSP_DIB_PAPER, /* Paper bitmap (since PSP7) */
PSP_DIB_PATTERN, /* Pattern bitmap (since PSP7) */
PSP_DIB_PATTERN_TRANS_MASK, /* Pattern transparency mask (since PSP7) */
} PSPDIBType;
/* Type of image in the composite image bank block. (since PSP6)
*/
typedef enum {
PSP_IMAGE_COMPOSITE = 0, /* Composite Image */
PSP_IMAGE_THUMBNAIL, /* Thumbnail Image */
} PSPCompositeImageType;
/* Graphic contents flags. (since PSP6)
*/
typedef enum {
/* Layer types */
keGCRasterLayers = 0x00000001, /* At least one raster layer */
keGCVectorLayers = 0x00000002, /* At least one vector layer */
keGCAdjustmentLayers = 0x00000004, /* At least one adjustment layer */
keGCGroupLayers = 0x00000008, /* at least one group layer */
keGCMaskLayers = 0x00000010, /* at least one mask layer */
keGCArtMediaLayers = 0x00000020, /* at least one art media layer */
/* Additional attributes */
keGCMergedCache = 0x00800000, /* merged cache (composite image) */
keGCThumbnail = 0x01000000, /* Has a thumbnail */
keGCThumbnailTransparency = 0x02000000, /* Thumbnail transp. */
keGCComposite = 0x04000000, /* Has a composite image */
keGCCompositeTransparency = 0x08000000, /* Composite transp. */
keGCFlatImage = 0x10000000, /* Just a background */
keGCSelection = 0x20000000, /* Has a selection */
keGCFloatingSelectionLayer = 0x40000000, /* Has float. selection */
keGCAlphaChannels = 0x80000000, /* Has alpha channel(s) */
} PSPGraphicContents;
/* Character style flags. (since PSP6)
*/
typedef enum {
keStyleItalic = 0x00000001, /* Italic property bit */
keStyleStruck = 0x00000002, /* Strike­out property bit */
keStyleUnderlined = 0x00000004, /* Underlined property bit */
keStyleWarped = 0x00000008, /* Warped property bit (since PSP8) */
keStyleAntiAliased = 0x00000010, /* Anti­aliased property bit (since PSP8) */
} PSPCharacterProperties;
/* Table type. (since PSP7)
*/
typedef enum {
keTTUndefined = 0, /* Undefined table type */
keTTGradientTable, /* Gradient table type */
keTTPaperTable, /* Paper table type */
keTTPatternTable /* Pattern table type */
} PSPTableType;
/* Layer flags. (since PSP6)
*/
typedef enum {
keVisibleFlag = 0x00000001, /* Layer is visible */
keMaskPresenceFlag = 0x00000002, /* Layer has a mask */
} PSPLayerProperties;
/* Shape property flags. (since PSP6)
*/
typedef enum {
keShapeAntiAliased = 0x00000001, /* Shape is anti­aliased */
keShapeSelected = 0x00000002, /* Shape is selected */
keShapeVisible = 0x00000004, /* Shape is visible */
} PSPShapeProperties;
/* Polyline node type flags. (since PSP7)
*/
typedef enum {
keNodeUnconstrained = 0x0000, /* Default node type */
keNodeSmooth = 0x0001, /* Node is smooth */
keNodeSymmetric = 0x0002, /* Node is symmetric */
keNodeAligned = 0x0004, /* Node is aligned */
keNodeActive = 0x0008, /* Node is active */
keNodeLocked = 0x0010, /* Node is locked */
keNodeSelected = 0x0020, /* Node is selected */
keNodeVisible = 0x0040, /* Node is visible */
keNodeClosed = 0x0080, /* Node is closed */
/* TODO: This might be a thinko in the spec document only or in the image
* format itself. Need to investigate that later
*/
keNodeLockedPSP6 = 0x0016, /* Node is locked */
keNodeSelectedPSP6 = 0x0032, /* Node is selected */
keNodeVisiblePSP6 = 0x0064, /* Node is visible */
keNodeClosedPSP6 = 0x0128, /* Node is closed */
} PSPPolylineNodeTypes;
/* Blend modes. (since PSP6)
*/
typedef enum {
PSP_BLEND_NORMAL,
PSP_BLEND_DARKEN,
PSP_BLEND_LIGHTEN,
PSP_BLEND_HUE,
PSP_BLEND_SATURATION,
PSP_BLEND_COLOR,
PSP_BLEND_LUMINOSITY,
PSP_BLEND_MULTIPLY,
PSP_BLEND_SCREEN,
PSP_BLEND_DISSOLVE,
PSP_BLEND_OVERLAY,
PSP_BLEND_HARD_LIGHT,
PSP_BLEND_SOFT_LIGHT,
PSP_BLEND_DIFFERENCE,
PSP_BLEND_DODGE,
PSP_BLEND_BURN,
PSP_BLEND_EXCLUSION,
PSP_BLEND_TRUE_HUE, /* since PSP8 */
PSP_BLEND_TRUE_SATURATION, /* since PSP8 */
PSP_BLEND_TRUE_COLOR, /* since PSP8 */
PSP_BLEND_TRUE_LIGHTNESS, /* since PSP8 */
PSP_BLEND_ADJUST = 255,
} PSPBlendModes;
/* Adjustment layer types. (since PSP6)
*/
typedef enum {
keAdjNone = 0, /* Undefined adjustment layer type */
keAdjLevel, /* Level adjustment */
keAdjCurve, /* Curve adjustment */
keAdjBrightContrast, /* Brightness­contrast adjustment */
keAdjColorBal, /* Color balance adjustment */
keAdjHSL, /* HSL adjustment */
keAdjChannelMixer, /* Channel mixer adjustment */
keAdjInvert, /* Invert adjustment */
keAdjThreshold, /* Threshold adjustment */
keAdjPoster /* Posterize adjustment */
} PSPAdjustmentLayerType;
/* Vector shape types. (since PSP6)
*/
typedef enum {
keVSTUnknown = 0, /* Undefined vector type */
keVSTText, /* Shape represents lines of text */
keVSTPolyline, /* Shape represents a multiple segment line */
keVSTEllipse, /* Shape represents an ellipse (or circle) */
keVSTPolygon, /* Shape represents a closed polygon */
keVSTGroup, /* Shape represents a group shape (since PSP7) */
} PSPVectorShapeType;
/* Text element types. (since PSP6)
*/
typedef enum {
keTextElemUnknown = 0, /* Undefined text element type */
keTextElemChar, /* A single character code */
keTextElemCharStyle, /* A character style change */
keTextElemLineStyle /* A line style change */
} PSPTextElementType;
/* Text alignment types. (since PSP6)
*/
typedef enum {
keTextAlignmentLeft = 0, /* Left text alignment */
keTextAlignmentCenter, /* Center text alignment */
keTextAlignmentRight /* Right text alignment */
} PSPTextAlignment;
/* Text antialias modes. */
typedef enum {
keNoAntialias = 0, /* Antialias off */
keSharpAntialias, /* Sharp */
keSmoothAntialias /* Smooth */
} PSPAntialiasMode;
/* Text flow types */
typedef enum {
keTFHorizontalDown = 0, /* Horizontal then down */
keTFVerticalLeft, /* Vertical then left */
keTFVerticalRight, /* Vertical then right */
keTFHorizontalUp /* Horizontal then up */
} PSPTextFlow;
/* Paint style types. (since PSP6)
*/
typedef enum {
keStyleNone = 0x0000, /* No paint style info applies */
keStyleColor = 0x0001, /* Color paint style info */
keStyleGradient = 0x0002, /* Gradient paint style info */
keStylePattern = 0x0004, /* Pattern paint style info (since PSP7) */
keStylePaper = 0x0008, /* Paper paint style info (since PSP7) */
keStylePen = 0x0010, /* Organic pen paint style info (since PSP7) */
} PSPPaintStyleType;
/* Gradient type. (since PSP7)
*/
typedef enum {
keSGTLinear = 0, /* Linera gradient type */
keSGTRadial, /* Radial gradient type */
keSGTRectangular, /* Rectangulat gradient type */
keSGTSunburst /* Sunburst gradient type */
} PSPStyleGradientType;
/* Paint Style Cap Type (Start & End). (since PSP7)
*/
typedef enum {
keSCTCapFlat = 0, /* Flat cap type (was round in psp6) */
keSCTCapRound, /* Round cap type (was square in psp6) */
keSCTCapSquare, /* Square cap type (was flat in psp6) */
keSCTCapArrow, /* Arrow cap type */
keSCTCapCadArrow, /* Cad arrow cap type */
keSCTCapCurvedTipArrow, /* Curved tip arrow cap type */
keSCTCapRingBaseArrow, /* Ring base arrow cap type */
keSCTCapFluerDelis, /* Fluer deLis cap type */
keSCTCapFootball, /* Football cap type */
keSCTCapXr71Arrow, /* Xr71 arrow cap type */
keSCTCapLilly, /* Lilly cap type */
keSCTCapPinapple, /* Pinapple cap type */
keSCTCapBall, /* Ball cap type */
keSCTCapTulip /* Tulip cap type */
} PSPStyleCapType;
/* Paint Style Join Type. (since PSP7)
*/
typedef enum {
keSJTJoinMiter = 0,
keSJTJoinRound,
keSJTJoinBevel
} PSPStyleJoinType;
/* Organic pen type. (since PSP7)
*/
typedef enum {
keSPTOrganicPenNone = 0, /* Undefined pen type */
keSPTOrganicPenMesh, /* Mesh pen type */
keSPTOrganicPenSand, /* Sand pen type */
keSPTOrganicPenCurlicues, /* Curlicues pen type */
keSPTOrganicPenRays, /* Rays pen type */
keSPTOrganicPenRipple, /* Ripple pen type */
keSPTOrganicPenWave, /* Wave pen type */
keSPTOrganicPen /* Generic pen type */
} PSPStylePenType;
/* Channel types.
*/
typedef enum {
PSP_CHANNEL_COMPOSITE = 0, /* Channel of single channel bitmap */
PSP_CHANNEL_RED, /* Red channel of 24 bit bitmap */
PSP_CHANNEL_GREEN, /* Green channel of 24 bit bitmap */
PSP_CHANNEL_BLUE /* Blue channel of 24 bit bitmap */
} PSPChannelType;
/* Possible metrics used to measure resolution.
*/
typedef enum {
PSP_METRIC_UNDEFINED = 0, /* Metric unknown */
PSP_METRIC_INCH, /* Resolution is in inches */
PSP_METRIC_CM /* Resolution is in centimeters */
} PSP_METRIC;
/* Possible types of compression.
*/
typedef enum {
PSP_COMP_NONE = 0, /* No compression */
PSP_COMP_RLE, /* RLE compression */
PSP_COMP_LZ77, /* LZ77 compression */
PSP_COMP_JPEG /* JPEG compression (only used by thumbnail and composite image) (since PSP6) */
} PSPCompression;
/* Picture tube placement mode.
*/
typedef enum {
tpmRandom, /* Place tube images in random intervals */
tpmConstant /* Place tube images in constant intervals */
} TubePlacementMode;
/* Picture tube selection mode.
*/
typedef enum {
tsmRandom, /* Randomly select the next image in */
/* tube to display */
tsmIncremental, /* Select each tube image in turn */
tsmAngular, /* Select image based on cursor direction */
tsmPressure, /* Select image based on pressure */
/* (from pressure-sensitive pad) */
tsmVelocity /* Select image based on cursor speed */
} TubeSelectionMode;
/* Extended data field types.
*/
typedef enum {
PSP_XDATA_TRNS_INDEX = 0, /* Transparency index field */
PSP_XDATA_GRID, /* Image grid information (since PSP7) */
PSP_XDATA_GUIDE, /* Image guide information (since PSP7) */
PSP_XDATA_EXIF, /* Image Exif information (since PSP8) */
PSP_XDATA_IPTC, /* Image IPTC information (since PSP8) */
} PSPExtendedDataID;
/* Creator field types.
*/
typedef enum {
PSP_CRTR_FLD_TITLE = 0, /* Image document title field */
PSP_CRTR_FLD_CRT_DATE, /* Creation date field */
PSP_CRTR_FLD_MOD_DATE, /* Modification date field */
PSP_CRTR_FLD_ARTIST, /* Artist name field */
PSP_CRTR_FLD_CPYRGHT, /* Copyright holder name field */
PSP_CRTR_FLD_DESC, /* Image document description field */
PSP_CRTR_FLD_APP_ID, /* Creating app id field */
PSP_CRTR_FLD_APP_VER /* Creating app version field */
} PSPCreatorFieldID;
/* Grid units type. (since PSP7)
*/
typedef enum {
keGridUnitsPixels = 0, /* Grid units is pixels */
keGridUnitsInches, /* Grid units is inches */
keGridUnitsCentimeters /* Grid units is centimeters */
} PSPGridUnitsType;
/* Guide orientation type. (since PSP7)
*/
typedef enum {
keHorizontalGuide = 0,
keVerticalGuide
} PSPGuideOrientationType;
/* Creator application identifiers.
*/
typedef enum {
PSP_CREATOR_APP_UNKNOWN = 0, /* Creator application unknown */
PSP_CREATOR_APP_PAINT_SHOP_PRO /* Creator is Paint Shop Pro */
} PSPCreatorAppID;
/* Layer types.
*/
typedef enum {
PSP_LAYER_NORMAL = 0, /* Normal layer */
PSP_LAYER_FLOATING_SELECTION /* Floating selection layer */
} PSPLayerTypePSP5;
/* Layer types. (since PSP6)
*/
typedef enum {
keGLTUndefined = 0, /* Undefined layer type */
keGLTRaster, /* Standard raster layer */
keGLTFloatingRasterSelection, /* Floating selection (raster layer) */
keGLTVector, /* Vector layer */
keGLTAdjustment, /* Adjustment layer */
keGLTGroup, /* Group layer (since PSP8) */
keGLTMask, /* Mask layer (since PSP8) */
keGLTArtMedia /* Art media layer (since PSP9) */
} PSPLayerTypePSP6;
/* Art media layer map types (since PSP7) */
typedef enum {
keArtMediaColorMap = 0,
keArtMediaBumpMap,
keArtMediaShininessMap,
keArtMediaReflectivityMap,
keArtMediaDrynessMap
} PSPArtMediaMapType;
/* Truth values.
*/
#if 0 /* FALSE and TRUE taken by GLib */
typedef enum {
FALSE = 0,
TRUE
} PSP_BOOLEAN;
#else
typedef gboolean PSP_BOOLEAN;
#endif
/* End of cut&paste from psp spec */
/* We store the various PSP data in own structures.
* We cannot use structs intended to be direct copies of the file block
* headers because of struct alignment issues.
*/
typedef struct
{
guint32 width, height;
gdouble resolution;
guchar metric;
guint16 compression;
guint16 depth;
guchar grayscale;
guint32 active_layer;
guint16 layer_count;
guint16 bytes_per_sample;
PikaImageBaseType base_type;
PikaPrecision precision;
} PSPimage;
typedef struct _Psp Psp;
typedef struct _PspClass PspClass;
struct _Psp
{
PikaPlugIn parent_instance;
};
struct _PspClass
{
PikaPlugInClass parent_class;
};
#define PSP_TYPE (psp_get_type ())
#define PSP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), PSP_TYPE, Psp))
GType psp_get_type (void) G_GNUC_CONST;
static GList * psp_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * psp_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * psp_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
PikaMetadata *metadata,
PikaMetadataLoadFlags *flags,
PikaProcedureConfig *config,
gpointer run_data);
static PikaValueArray * psp_save (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GFile *file,
PikaMetadata *metadata,
PikaProcedureConfig *config,
gpointer run_data);
static PikaImage * load_image (GFile *file,
GError **error);
static gboolean save_image (GFile *file,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GObject *config,
GError **error);
static gboolean save_dialog (PikaProcedure *procedure,
GObject *config,
PikaImage *image);
G_DEFINE_TYPE (Psp, psp, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (PSP_TYPE)
DEFINE_STD_SET_I18N
static guint16 psp_ver_major;
static guint16 psp_ver_minor;
static void
psp_class_init (PspClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = psp_query_procedures;
plug_in_class->create_procedure = psp_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
psp_init (Psp *psp)
{
}
static GList *
psp_query_procedures (PikaPlugIn *plug_in)
{
GList *list = NULL;
list = g_list_append (list, g_strdup (LOAD_PROC));
#if 0
/* commented out until exporting is implemented */
list = g_list_append (list, g_strdup (SAVE_PROC));
#endif
return list;
}
static PikaProcedure *
psp_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, LOAD_PROC))
{
procedure = pika_load_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
psp_load, NULL, NULL);
pika_procedure_set_menu_label (procedure, _("Paint Shop Pro image"));
pika_procedure_set_documentation (procedure,
_("Loads images from the Paint Shop "
"Pro PSP file format"),
_("This plug-in loads and exports images "
"in Paint Shop Pro's native PSP format. "
"Vector layers aren't handled. "
"Exporting isn't yet implemented."),
name);
pika_procedure_set_attribution (procedure,
"Tor Lillqvist",
"Tor Lillqvist",
"1999");
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"image/x-psp");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"psp,tub,pspimage,psptube");
pika_file_procedure_set_magics (PIKA_FILE_PROCEDURE (procedure),
"0,string,Paint\\040Shop\\040Pro\\040Image\\040File\n\032");
}
else if (! strcmp (name, SAVE_PROC))
{
procedure = pika_save_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
FALSE, psp_save, NULL, NULL);
pika_procedure_set_image_types (procedure, "*");
pika_procedure_set_menu_label (procedure, _("Paint Shop Pro image"));
pika_file_procedure_set_format_name (PIKA_FILE_PROCEDURE (procedure),
"PSP");
pika_procedure_set_documentation (procedure,
"Exports images in the Paint Shop Pro "
"PSP file format",
"This plug-in loads and exports images "
"in Paint Shop Pro's native PSP format. "
"Vector layers aren't handled. "
"Exporting isn't yet implemented.",
name);
pika_procedure_set_attribution (procedure,
"Tor Lillqvist",
"Tor Lillqvist",
"1999");
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"image/x-psp");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"psp,tub");
PIKA_PROC_ARG_INT (procedure, "compression",
"_Data Compression",
"Specify 0 for no compression, "
"1 for RLE, and 2 for LZ77",
0, 2, PSP_COMP_LZ77,
G_PARAM_READWRITE);
}
return procedure;
}
static PikaValueArray *
psp_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
PikaMetadata *metadata,
PikaMetadataLoadFlags *flags,
PikaProcedureConfig *config,
gpointer run_data)
{
PikaValueArray *return_vals;
PikaImage *image;
GError *error = NULL;
gegl_init (NULL, NULL);
image = load_image (file, &error);
if (! image)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
error);
return_vals = pika_procedure_new_return_values (procedure,
PIKA_PDB_SUCCESS,
NULL);
PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
return return_vals;
}
static PikaValueArray *
psp_save (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GFile *file,
PikaMetadata *metadata,
PikaProcedureConfig *config,
gpointer run_data)
{
PikaPDBStatusType status = PIKA_PDB_SUCCESS;
PikaExportReturn export = PIKA_EXPORT_CANCEL;
GError *error = NULL;
gegl_init (NULL, NULL);
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
case PIKA_RUN_WITH_LAST_VALS:
pika_ui_init (PLUG_IN_BINARY);
export = pika_export_image (&image, &n_drawables, &drawables, "PSP",
PIKA_EXPORT_CAN_HANDLE_RGB |
PIKA_EXPORT_CAN_HANDLE_GRAY |
PIKA_EXPORT_CAN_HANDLE_INDEXED |
PIKA_EXPORT_CAN_HANDLE_ALPHA |
PIKA_EXPORT_CAN_HANDLE_LAYERS);
if (export == PIKA_EXPORT_CANCEL)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
break;
default:
break;
}
if (run_mode == PIKA_RUN_INTERACTIVE)
{
if (! save_dialog (procedure, G_OBJECT (config), image))
status = PIKA_PDB_CANCEL;
}
if (status == PIKA_PDB_SUCCESS)
{
if (! save_image (file, image, n_drawables, drawables,
G_OBJECT (config), &error))
{
status = PIKA_PDB_EXECUTION_ERROR;
}
}
if (export == PIKA_EXPORT_EXPORT)
{
pika_image_delete (image);
g_free (drawables);
}
return pika_procedure_new_return_values (procedure, status, error);
}
static gboolean
save_dialog (PikaProcedure *procedure,
GObject *config,
PikaImage *image)
{
GtkWidget *dialog;
GtkListStore *store;
GtkWidget *frame;
gint run;
dialog = pika_save_procedure_dialog_new (PIKA_SAVE_PROCEDURE (procedure),
PIKA_PROCEDURE_CONFIG (config),
image);
/* file save type */
store = pika_int_store_new (_("None"), PSP_COMP_NONE,
_("RLE"), PSP_COMP_RLE,
_("LZ77"), PSP_COMP_LZ77,
NULL);
frame = pika_procedure_dialog_get_int_radio (PIKA_PROCEDURE_DIALOG (dialog),
"compression", PIKA_INT_STORE (store));
gtk_container_set_border_width (GTK_CONTAINER (frame), 12);
pika_procedure_dialog_fill (PIKA_PROCEDURE_DIALOG (dialog), NULL);
gtk_widget_show (dialog);
run = pika_procedure_dialog_run (PIKA_PROCEDURE_DIALOG (dialog));
gtk_widget_destroy (dialog);
return run;
}
/* This helper method is used to get the name of the block for the known block
* types. The enum PSPBlockID must cover the input values.
*/
static const gchar *
block_name (gint id)
{
static const gchar *block_names[] =
{
"IMAGE",
"CREATOR",
"COLOR",
"LAYER_START",
"LAYER",
"CHANNEL",
"SELECTION",
"ALPHA_BANK",
"ALPHA_CHANNEL",
"THUMBNAIL",
"EXTENDED_DATA",
"TUBE",
"ADJUSTMENT_EXTENSION",
"VECTOR_EXTENSION_BLOCK",
"SHAPE_BLOCK",
"PAINTSTYLE_BLOCK",
"COMPOSITE_IMAGE_BANK_BLOCK",
"COMPOSITE_ATTRIBUTES_BLOCK",
"JPEG_BLOCK",
"LINESTYLE_BLOCK",
"TABLE_BANK_BLOCK",
"TABLE_BLOCK",
"PAPER_BLOCK",
"PATTERN_BLOCK",
"GRADIENT_BLOCK",
"GROUP_EXTENSION_BLOCK",
"MASK_EXTENSION_BLOCK",
"BRUSH_BLOCK",
"ART_MEDIA_BLOCK",
"ART_MEDIA_MAP_BLOCK",
"ART_MEDIA_TILE_BLOCK",
"ART_MEDIA_TEXTURE_BLOCK",
"COLORPROFILE_BLOCK",
"RASTER_EXTENSION_BLOCK",
};
static gchar *err_name = NULL;
if (id >= 0 && id <= PSP_RASTER_EXTENSION_BLOCK)
return block_names[id];
g_free (err_name);
err_name = g_strdup_printf ("id=%d", id);
return err_name;
}
/* This helper method is used during loading. It verifies the block we are
* reading has a valid header. Fills the variables init_len and total_len
*/
static gint
read_block_header (FILE *f,
guint32 *init_len,
guint32 *total_len,
GError **error)
{
guchar buf[4];
guint16 id;
long header_start;
guint32 len;
IFDBG(3) header_start = ftell (f);
if (fread (buf, 4, 1, f) < 1
|| fread (&id, 2, 1, f) < 1
|| fread (&len, 4, 1, f) < 1
|| (psp_ver_major < 4 && fread (total_len, 4, 1, f) < 1))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading block header"));
return -1;
}
if (memcmp (buf, "~BK\0", 4) != 0)
{
IFDBG(3)
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid block header at %ld"), header_start);
else
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid block header"));
return -1;
}
IFDBG(3) g_message ("%s at %ld", block_name (id), header_start);
if (psp_ver_major < 4)
{
*init_len = GUINT32_FROM_LE (len);
*total_len = GUINT32_FROM_LE (*total_len);
}
else
{
/* Version 4.0 seems to have dropped the initial data chunk length
* field.
*/
*init_len = 0xDEADBEEF; /* Intentionally bogus, should not be used */
*total_len = GUINT32_FROM_LE (len);
}
return GUINT16_FROM_LE (id);
}
static gint
try_fseek (FILE *f,
glong pos,
gint whence,
GError **error)
{
if (fseek (f, pos, whence) < 0)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Seek error: %s"), g_strerror (errno));
fclose (f);
return -1;
}
return 0;
}
/* Read the PSP_IMAGE_BLOCK */
static gint
read_general_image_attribute_block (FILE *f,
guint init_len,
guint total_len,
PSPimage *ia,
GError **error)
{
gchar buf[6];
guint64 res;
gchar graphics_content[4];
long chunk_start;
if (init_len < 38 || total_len < 38)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid general image attribute chunk size."));
return -1;
}
chunk_start = ftell (f);
if ((psp_ver_major >= 4
&& (fread (&init_len, 4, 1, f) < 1 || ((init_len = GUINT32_FROM_LE (init_len)) < 46)))
|| fread (&ia->width, 4, 1, f) < 1
|| fread (&ia->height, 4, 1, f) < 1
|| fread (&res, 8, 1, f) < 1
|| fread (&ia->metric, 1, 1, f) < 1
|| fread (&ia->compression, 2, 1, f) < 1
|| fread (&ia->depth, 2, 1, f) < 1
|| fread (buf, 2+4, 1, f) < 1 /* Skip plane and color count */
|| fread (&ia->grayscale, 1, 1, f) < 1
|| fread (buf, 4, 1, f) < 1 /* Skip total image size */
|| fread (&ia->active_layer, 4, 1, f) < 1
|| fread (&ia->layer_count, 2, 1, f) < 1
|| (psp_ver_major >= 4 && fread (graphics_content, 4, 1, f) < 1)
|| try_fseek (f, chunk_start + init_len, SEEK_SET, error) < 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading general image attribute block."));
return -1;
}
ia->width = GUINT32_FROM_LE (ia->width);
ia->height = GUINT32_FROM_LE (ia->height);
res = GUINT64_FROM_LE (res);
memcpy (&ia->resolution, &res, 8);
if (ia->metric == PSP_METRIC_CM)
ia->resolution /= 2.54;
ia->compression = GUINT16_FROM_LE (ia->compression);
if (ia->compression > PSP_COMP_LZ77)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unknown compression type %d"), ia->compression);
return -1;
}
ia->depth = GUINT16_FROM_LE (ia->depth);
switch (ia->depth)
{
case 24:
case 48:
ia->base_type = PIKA_RGB;
if (ia->depth == 24)
ia->precision = PIKA_PRECISION_U8_NON_LINEAR;
else
ia->precision = PIKA_PRECISION_U16_NON_LINEAR;
break;
case 1:
case 4:
case 8:
case 16:
if (ia->grayscale && ia->depth >= 8)
{
ia->base_type = PIKA_GRAY;
if (ia->depth == 8)
ia->precision = PIKA_PRECISION_U8_NON_LINEAR;
else
ia->precision = PIKA_PRECISION_U16_NON_LINEAR;
}
else if (ia->depth <= 8 && ! ia->grayscale)
{
ia->base_type = PIKA_INDEXED;
ia->precision = PIKA_PRECISION_U8_NON_LINEAR;
}
else
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported bit depth %d"), ia->depth);
return -1;
}
break;
default:
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported bit depth %d"), ia->depth);
return -1;
break;
}
if (ia->precision == PIKA_PRECISION_U16_NON_LINEAR)
ia->bytes_per_sample = 2;
else
ia->bytes_per_sample = 1;
ia->active_layer = GUINT32_FROM_LE (ia->active_layer);
ia->layer_count = GUINT16_FROM_LE (ia->layer_count);
return 0;
}
static gint
read_creator_block (FILE *f,
PikaImage *image,
guint total_len,
PSPimage *ia,
GError **error)
{
long data_start;
guchar buf[4];
guint16 keyword;
guint32 length;
gchar *string;
gchar *title = NULL, *artist = NULL, *copyright = NULL, *description = NULL;
guint32 dword;
guint32 __attribute__((unused))cdate = 0;
guint32 __attribute__((unused))mdate = 0;
guint32 __attribute__((unused))appid;
guint32 __attribute__((unused))appver;
GString *comment;
PikaParasite *comment_parasite;
data_start = ftell (f);
comment = g_string_new (NULL);
while (ftell (f) < data_start + total_len)
{
if (fread (buf, 4, 1, f) < 1
|| fread (&keyword, 2, 1, f) < 1
|| fread (&length, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading creator keyword chunk"));
return -1;
}
if (memcmp (buf, "~FL\0", 4) != 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid keyword chunk header"));
return -1;
}
keyword = GUINT16_FROM_LE (keyword);
length = GUINT32_FROM_LE (length);
switch (keyword)
{
case PSP_CRTR_FLD_TITLE:
case PSP_CRTR_FLD_ARTIST:
case PSP_CRTR_FLD_CPYRGHT:
case PSP_CRTR_FLD_DESC:
string = g_malloc (length + 1);
if (fread (string, length, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading creator keyword data"));
g_free (string);
return -1;
}
/* PSP does not zero terminate strings */
string[length] = '\0';
switch (keyword)
{
case PSP_CRTR_FLD_TITLE:
g_free (title); title = string; break;
case PSP_CRTR_FLD_ARTIST:
g_free (artist); artist = string; break;
case PSP_CRTR_FLD_CPYRGHT:
g_free (copyright); copyright = string; break;
case PSP_CRTR_FLD_DESC:
g_free (description); description = string; break;
default:
g_free (string);
}
break;
case PSP_CRTR_FLD_CRT_DATE:
case PSP_CRTR_FLD_MOD_DATE:
case PSP_CRTR_FLD_APP_ID:
case PSP_CRTR_FLD_APP_VER:
if (fread (&dword, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading creator keyword data"));
return -1;
}
switch (keyword)
{
case PSP_CRTR_FLD_CRT_DATE:
cdate = dword; break;
case PSP_CRTR_FLD_MOD_DATE:
mdate = dword; break;
case PSP_CRTR_FLD_APP_ID:
appid = dword; break;
case PSP_CRTR_FLD_APP_VER:
appver = dword; break;
}
break;
default:
if (try_fseek (f, length, SEEK_CUR, error) < 0)
{
return -1;
}
break;
}
}
if (title)
{
g_string_append (comment, title);
g_free (title);
g_string_append (comment, "\n");
}
if (artist)
{
g_string_append (comment, artist);
g_free (artist);
g_string_append (comment, "\n");
}
if (copyright)
{
g_string_append (comment, "Copyright ");
g_string_append (comment, copyright);
g_free (copyright);
g_string_append (comment, "\n");
}
if (description)
{
g_string_append (comment, description);
g_free (description);
g_string_append (comment, "\n");
}
if (comment->len > 0)
{
comment_parasite = pika_parasite_new ("pika-comment",
PIKA_PARASITE_PERSISTENT,
strlen (comment->str) + 1,
comment->str);
pika_image_attach_parasite (image, comment_parasite);
pika_parasite_free (comment_parasite);
}
g_string_free (comment, TRUE);
return 0;
}
static gint
read_color_block (FILE *f,
PikaImage *image,
guint total_len,
PSPimage *ia,
GError **error)
{
long block_start;
guint32 chunk_len, entry_count, pal_size;
guint32 color_palette_entries;
guchar *color_palette;
block_start = ftell (f);
if (psp_ver_major >= 4)
{
if (fread (&chunk_len, 4, 1, f) < 1
|| fread (&entry_count, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading color block"));
return -1;
}
chunk_len = GUINT32_FROM_LE (chunk_len);
if (try_fseek (f, block_start + chunk_len, SEEK_SET, error) < 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading color block"));
return -1;
}
}
else
{
if (fread (&entry_count, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading color block"));
return -1;
}
}
color_palette_entries = GUINT32_FROM_LE (entry_count);
/* TODO: PIKA currently only supports a maximum of 256 colors
* in an indexed image. If this changes, we can change this check */
if (color_palette_entries > 256)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error: Unsupported palette size"));
return -1;
}
/* psp color palette entries are stored as RGBA so 4 bytes per entry
* where the fourth bytes is always zero */
pal_size = color_palette_entries * 4;
color_palette = g_malloc (pal_size);
if (fread (color_palette, pal_size, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading color palette"));
return -1;
}
else
{
guchar *tmpmap;
gint i;
/* Convert to BGR palette */
tmpmap = g_malloc (3 * color_palette_entries);
for (i = 0; i < color_palette_entries; ++i)
{
tmpmap[i*3 ] = color_palette[i*4+2];
tmpmap[i*3+1] = color_palette[i*4+1];
tmpmap[i*3+2] = color_palette[i*4];
}
memcpy (color_palette, tmpmap, color_palette_entries * 3);
g_free (tmpmap);
pika_image_set_colormap (image, color_palette, color_palette_entries);
g_free (color_palette);
}
return 0;
}
static void inline
swab_rect (guint32 *rect)
{
rect[0] = GUINT32_FROM_LE (rect[0]);
rect[1] = GUINT32_FROM_LE (rect[1]);
rect[2] = GUINT32_FROM_LE (rect[2]);
rect[3] = GUINT32_FROM_LE (rect[3]);
}
static PikaLayerMode
pika_layer_mode_from_psp_blend_mode (PSPBlendModes mode)
{
switch (mode)
{
case PSP_BLEND_NORMAL:
return PIKA_LAYER_MODE_NORMAL_LEGACY;
case PSP_BLEND_DARKEN:
return PIKA_LAYER_MODE_DARKEN_ONLY_LEGACY;
case PSP_BLEND_LIGHTEN:
return PIKA_LAYER_MODE_LIGHTEN_ONLY_LEGACY;
case PSP_BLEND_HUE:
return PIKA_LAYER_MODE_HSV_HUE_LEGACY;
case PSP_BLEND_SATURATION:
return PIKA_LAYER_MODE_HSV_SATURATION_LEGACY;
case PSP_BLEND_COLOR:
return PIKA_LAYER_MODE_HSL_COLOR_LEGACY;
case PSP_BLEND_LUMINOSITY:
return PIKA_LAYER_MODE_HSV_VALUE_LEGACY; /* ??? */
case PSP_BLEND_MULTIPLY:
return PIKA_LAYER_MODE_MULTIPLY_LEGACY;
case PSP_BLEND_SCREEN:
return PIKA_LAYER_MODE_SCREEN_LEGACY;
case PSP_BLEND_DISSOLVE:
return PIKA_LAYER_MODE_DISSOLVE;
case PSP_BLEND_OVERLAY:
return PIKA_LAYER_MODE_OVERLAY;
case PSP_BLEND_HARD_LIGHT:
return PIKA_LAYER_MODE_HARDLIGHT_LEGACY;
case PSP_BLEND_SOFT_LIGHT:
return PIKA_LAYER_MODE_SOFTLIGHT_LEGACY;
case PSP_BLEND_DIFFERENCE:
return PIKA_LAYER_MODE_DIFFERENCE_LEGACY;
case PSP_BLEND_DODGE:
return PIKA_LAYER_MODE_DODGE_LEGACY;
case PSP_BLEND_BURN:
return PIKA_LAYER_MODE_BURN_LEGACY;
case PSP_BLEND_EXCLUSION:
return PIKA_LAYER_MODE_EXCLUSION;
case PSP_BLEND_TRUE_HUE:
return PIKA_LAYER_MODE_HSV_HUE;
case PSP_BLEND_TRUE_SATURATION:
return PIKA_LAYER_MODE_HSV_SATURATION;
case PSP_BLEND_TRUE_COLOR:
return PIKA_LAYER_MODE_HSL_COLOR;
case PSP_BLEND_TRUE_LIGHTNESS:
return PIKA_LAYER_MODE_HSV_VALUE;
case PSP_BLEND_ADJUST:
return -1; /* ??? */
}
return -1;
}
static const gchar *
blend_mode_name (PSPBlendModes mode)
{
static const gchar *blend_mode_names[] =
{
"NORMAL",
"DARKEN",
"LIGHTEN",
"HUE",
"SATURATION",
"COLOR",
"LUMINOSITY",
"MULTIPLY",
"SCREEN",
"DISSOLVE",
"OVERLAY",
"HARD_LIGHT",
"SOFT_LIGHT",
"DIFFERENCE",
"DODGE",
"BURN",
"EXCLUSION",
"TRUE HUE",
"TRUE SATURATION",
"TRUE COLOR",
"TRUE LIGHTNESS",
/* ADJUST should always be the last one. */
"ADJUST"
};
static gchar *err_name = NULL;
if (mode >= 0 && mode <= PSP_BLEND_TRUE_LIGHTNESS)
return blend_mode_names[mode];
else if (mode == PSP_BLEND_ADJUST)
return blend_mode_names[PSP_BLEND_TRUE_LIGHTNESS+1];
g_free (err_name);
err_name = g_strdup_printf ("unknown layer blend mode %d", mode);
return err_name;
}
static const gchar *
layer_type_name (PSPLayerTypePSP6 type)
{
static const gchar *layer_type_names[] =
{
"Undefined",
"Raster",
"Floating Raster Selection",
"Vector",
"Adjustment",
"Group",
"Mask",
"Art Media",
};
static gchar *err_name = NULL;
if (type >= 0 && type <= keGLTArtMedia)
return layer_type_names[type];
g_free (err_name);
err_name = g_strdup_printf ("unknown layer type %d", type);
return err_name;
}
static const gchar *
bitmap_type_name (gint type)
{
static const gchar *bitmap_type_names[] =
{
"IMAGE",
"TRANS_MASK",
"USER_MASK",
"SELECTION",
"ALPHA_MASK",
"THUMBNAIL"
};
static gchar *err_name = NULL;
if (type >= 0 && type <= PSP_DIB_THUMBNAIL)
return bitmap_type_names[type];
g_free (err_name);
err_name = g_strdup_printf ("unknown bitmap type %d", type);
return err_name;
}
static const gchar *
channel_type_name (gint type)
{
static const gchar *channel_type_names[] =
{
"COMPOSITE",
"RED",
"GREEN",
"BLUE"
};
static gchar *err_name = NULL;
if (type >= 0 && type <= PSP_CHANNEL_BLUE)
return channel_type_names[type];
g_free (err_name);
err_name = g_strdup_printf ("unknown channel type %d", type);
return err_name;
}
static void *
psp_zalloc (void *opaque,
guint items,
guint size)
{
return g_malloc (items*size);
}
static void
psp_zfree (void *opaque,
void *ptr)
{
g_free (ptr);
}
static void
upscale_indexed_sub_8 (FILE *f,
gint width,
gint height,
gint bpp,
guchar *buf)
{
gint x, y, b, line_width;
gint bpp_zero_based = bpp - 1;
gint current_bit = 0;
guchar *tmpbuf, *buf_start, *src;
/* Scanlines for 1 and 4 bit only end on a 4-byte boundary. */
line_width = (((width * bpp + 7) / 8) + bpp_zero_based) / 4 * 4;
buf_start = g_malloc0 (width * height);
tmpbuf = buf_start;
for (y = 0; y < height; tmpbuf += width, ++y)
{
src = buf + y * line_width;
for (x = 0; x < width; ++x)
{
for (b = 0; b < bpp; b++)
{
current_bit = bpp * x + b;
if (src[current_bit / 8] & (128 >> (current_bit % 8)))
tmpbuf[x] += (1 << (bpp_zero_based - b));
}
}
}
memcpy (buf, buf_start, width * height);
g_free (buf_start);
}
static int
read_channel_data (FILE *f,
PSPimage *ia,
guchar **pixels,
guint bytespp,
guint offset,
GeglBuffer *buffer,
guint32 compressed_len,
GError **error)
{
gint i, y, line_width;
gint width = gegl_buffer_get_width (buffer);
gint height = gegl_buffer_get_height (buffer);
gint npixels = width * height;
guchar *buf;
guchar *buf2 = NULL; /* please the compiler */
guchar runcount, byte;
z_stream zstream;
g_assert (ia->bytes_per_sample <= 2);
if (ia->depth < 8)
{
/* Scanlines for 1 and 4 bit only end on a 4-byte boundary. */
line_width = (((width * ia->depth + 7) / 8) + ia->depth - 1) / 4 * 4;
}
else
{
line_width = width * ia->bytes_per_sample;
}
switch (ia->compression)
{
case PSP_COMP_NONE:
if (bytespp == 1)
{
fread (pixels[0], height * line_width, 1, f);
}
else
{
buf = g_malloc (line_width);
if (ia->bytes_per_sample == 1)
{
for (y = 0; y < height; y++)
{
guchar *p, *q;
fread (buf, width, 1, f);
/* Contrary to what the PSP specification seems to suggest
scanlines are not stored on a 4-byte boundary. */
p = buf;
q = pixels[y] + offset;
for (i = 0; i < width; i++)
{
*q = *p++;
q += bytespp;
}
}
}
else if (ia->bytes_per_sample == 2)
{
for (y = 0; y < height; y++)
{
guint16 *p, *q;
fread (buf, width * ia->bytes_per_sample, 1, f);
/* Contrary to what the PSP specification seems to suggest
scanlines are not stored on a 4-byte boundary. */
p = (guint16 *) buf;
q = (guint16 *) (pixels[y] + offset);
for (i = 0; i < width; i++)
{
*q = GUINT16_FROM_LE (*p++);
q += bytespp / 2;
}
}
}
g_free (buf);
}
break;
case PSP_COMP_RLE:
{
guchar *q, *endq;
q = pixels[0] + offset;
if (ia->depth >= 8)
endq = q + npixels * bytespp;
else
endq = q + line_width * height;
buf = g_malloc (128);
while (q < endq)
{
fread (&runcount, 1, 1, f);
if (runcount > 128)
{
runcount -= 128;
fread (&byte, 1, 1, f);
memset (buf, byte, runcount);
}
else
fread (buf, runcount, 1, f);
/* prevent buffer overflow for bogus data */
if (runcount > (endq - q) / bytespp + ia->bytes_per_sample - 1)
{
g_printerr ("Buffer overflow decompressing RLE data.\n");
break;
}
if (bytespp == 1)
{
memmove (q, buf, runcount);
q += runcount;
}
else if (ia->bytes_per_sample == 1)
{
guchar *p = buf;
for (i = 0; i < runcount; i++)
{
*q = *p++;
q += bytespp;
}
}
else if (ia->bytes_per_sample == 2)
{
guint16 *p = (guint16 *) buf;
guint16 *r = (guint16 *) q;
for (i = 0; i < runcount / 2; i++)
{
*r = GUINT16_FROM_LE (*p++);
r += bytespp / 2;
}
q = (guchar *) r;
}
}
g_free (buf);
}
break;
case PSP_COMP_LZ77:
buf = g_malloc (compressed_len);
fread (buf, compressed_len, 1, f);
zstream.next_in = buf;
zstream.avail_in = compressed_len;
zstream.zalloc = psp_zalloc;
zstream.zfree = psp_zfree;
zstream.opaque = f;
if (inflateInit (&zstream) != Z_OK)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("zlib error"));
return -1;
}
if (bytespp == 1)
zstream.next_out = pixels[0];
else
{
buf2 = g_malloc (npixels * ia->bytes_per_sample);
zstream.next_out = buf2;
}
zstream.avail_out = npixels * ia->bytes_per_sample;
if (inflate (&zstream, Z_FINISH) != Z_STREAM_END)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("zlib error"));
inflateEnd (&zstream);
return -1;
}
inflateEnd (&zstream);
g_free (buf);
if (bytespp > 1)
{
if (ia->bytes_per_sample == 1)
{
guchar *p, *q;
p = buf2;
q = pixels[0] + offset;
for (i = 0; i < npixels; i++)
{
*q = *p++;
q += bytespp;
}
g_free (buf2);
}
else if (ia->bytes_per_sample == 2)
{
guint16 *p, *q;
p = (guint16 *) buf2;
q = (guint16 *) (pixels[0] + offset);
for (i = 0; i < npixels; i++)
{
*q = GUINT16_FROM_LE (*p++);
q += bytespp / 2;
}
g_free (buf2);
}
}
break;
}
if (ia->base_type == PIKA_INDEXED && ia->depth < 8)
{
/* We need to convert 1 and 4 bit to 8 bit indexed */
upscale_indexed_sub_8 (f, width, height, ia->depth, pixels[0]);
}
return 0;
}
static gboolean
read_raster_layer_info (FILE *f,
long layer_extension_start,
guint16 *bitmap_count,
guint16 *channel_count,
GError **error)
{
long block_start;
guint32 layer_extension_len, block_len;
gint block_id;
if (fseek (f, layer_extension_start, SEEK_SET) < 0
|| fread (&layer_extension_len, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading layer extension information"));
return FALSE;
}
/* Newer versions of PSP have an extra block here for raster layers
with block id = 0x21. Most likely this was to fix an oversight in
the specification since vector and adjustment layers already were
using a similar extension block since file version 4.
The old chunk with bitmap_count and channel_count starts after this block.
We do not know starting from which version this change was implemented
but most likely version 9 (could also be version 10) so we can't test
based on version number only.
Although this is kind of a hack we can safely test for the block starting
code since the layer_extension_len here is always a small number.
*/
if (psp_ver_major > 8 && memcmp (&layer_extension_len, "~BK\0", 4) == 0)
{
if (fread (&block_id, 2, 1, f) < 1
|| fread (&block_len, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading block information"));
return FALSE;
}
block_id = GUINT16_FROM_LE (block_id);
block_len = GUINT32_FROM_LE (block_len);
block_start = ftell (f);
layer_extension_start = block_start + block_len;
if (fseek (f, layer_extension_start, SEEK_SET) < 0
|| fread (&layer_extension_len, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading layer extension information"));
return FALSE;
}
}
layer_extension_len = GUINT32_FROM_LE (layer_extension_len);
if (fread (bitmap_count, 2, 1, f) < 1
|| fread (channel_count, 2, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading layer extension information"));
return FALSE;
}
if (try_fseek (f, layer_extension_start + layer_extension_len, SEEK_SET, error) < 0)
{
return FALSE;
}
return TRUE;
}
static PikaLayer *
read_layer_block (FILE *f,
PikaImage *image,
guint total_len,
PSPimage *ia,
GError **error)
{
gint i;
long block_start, sub_block_start, channel_start;
long layer_extension_start;
gint sub_id;
guint32 sub_init_len, sub_total_len;
guint32 chunk_len;
gchar *name = NULL;
gchar *layer_name = NULL;
guint16 namelen;
guchar type, opacity, blend_mode, visibility, transparency_protected;
guchar link_group_id, mask_linked, mask_disabled;
guint32 image_rect[4], saved_image_rect[4], mask_rect[4], saved_mask_rect[4];
gboolean null_layer, can_handle_layer;
guint16 bitmap_count, channel_count;
PikaImageType drawable_type;
PikaLayer *layer = NULL;
PikaLayerMode layer_mode;
guint32 channel_init_len, channel_total_len;
guint32 compressed_len, uncompressed_len;
guint16 bitmap_type, channel_type;
gint width, height, bytespp, offset;
guchar **pixels, *pixel;
GeglBuffer *buffer;
block_start = ftell (f);
while (ftell (f) < block_start + total_len)
{
null_layer = FALSE;
can_handle_layer = FALSE;
/* Read the layer sub-block header */
sub_id = read_block_header (f, &sub_init_len, &sub_total_len, error);
if (sub_id == -1)
return NULL;
if (sub_id != PSP_LAYER_BLOCK)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid layer sub-block %s, should be LAYER"),
block_name (sub_id));
return NULL;
}
sub_block_start = ftell (f);
/* Read layer information chunk */
if (psp_ver_major >= 4)
{
if (fread (&chunk_len, 4, 1, f) < 1
|| fread (&namelen, 2, 1, f) < 1
/* A zero length layer name is apparently valid. To not get a warning for
namelen < 0 always being false we use this more complicated comparison. */
|| ((namelen = GUINT16_FROM_LE (namelen)) && (FALSE || namelen == 0))
|| (name = g_malloc (namelen + 1)) == NULL
|| (namelen > 0 && fread (name, namelen, 1, f) < 1)
|| fread (&type, 1, 1, f) < 1
|| fread (&image_rect, 16, 1, f) < 1
|| fread (&saved_image_rect, 16, 1, f) < 1
|| fread (&opacity, 1, 1, f) < 1
|| fread (&blend_mode, 1, 1, f) < 1
|| fread (&visibility, 1, 1, f) < 1
|| fread (&transparency_protected, 1, 1, f) < 1
|| fread (&link_group_id, 1, 1, f) < 1
|| fread (&mask_rect, 16, 1, f) < 1
|| fread (&saved_mask_rect, 16, 1, f) < 1
|| fread (&mask_linked, 1, 1, f) < 1
|| fread (&mask_disabled, 1, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading layer information chunk"));
g_free (name);
return NULL;
}
name[namelen] = 0;
layer_name = g_convert (name, -1, "utf-8", "iso8859-1", NULL, NULL, NULL);
g_free (name);
chunk_len = GUINT32_FROM_LE (chunk_len);
layer_extension_start = sub_block_start + chunk_len;
switch (type)
{
case keGLTFloatingRasterSelection:
g_message ("Floating selection restored as normal layer (%s)", layer_name);
case keGLTRaster:
if (! read_raster_layer_info (f, layer_extension_start,
&bitmap_count,
&channel_count,
error))
{
g_free (layer_name);
return NULL;
}
can_handle_layer = TRUE;
break;
default:
bitmap_count = 0;
channel_count = 0;
g_message ("Unsupported layer type %s (%s)", layer_type_name(type), layer_name);
break;
}
}
else
{
name = g_malloc (257);
name[256] = 0;
if (fread (name, 256, 1, f) < 1
|| fread (&type, 1, 1, f) < 1
|| fread (&image_rect, 16, 1, f) < 1
|| fread (&saved_image_rect, 16, 1, f) < 1
|| fread (&opacity, 1, 1, f) < 1
|| fread (&blend_mode, 1, 1, f) < 1
|| fread (&visibility, 1, 1, f) < 1
|| fread (&transparency_protected, 1, 1, f) < 1
|| fread (&link_group_id, 1, 1, f) < 1
|| fread (&mask_rect, 16, 1, f) < 1
|| fread (&saved_mask_rect, 16, 1, f) < 1
|| fread (&mask_linked, 1, 1, f) < 1
|| fread (&mask_disabled, 1, 1, f) < 1
|| fseek (f, 43, SEEK_CUR) < 0
|| fread (&bitmap_count, 2, 1, f) < 1
|| fread (&channel_count, 2, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading layer information chunk"));
g_free (name);
return NULL;
}
layer_name = g_convert (name, -1, "utf-8", "iso8859-1", NULL, NULL, NULL);
g_free (name);
if (type == PSP_LAYER_FLOATING_SELECTION)
g_message ("Floating selection restored as normal layer");
type = keGLTRaster;
can_handle_layer = TRUE;
if (try_fseek (f, sub_block_start + sub_init_len, SEEK_SET, error) < 0)
{
g_free (layer_name);
return NULL;
}
}
swab_rect (image_rect);
swab_rect (saved_image_rect);
swab_rect (mask_rect);
swab_rect (saved_mask_rect);
bitmap_count = GUINT16_FROM_LE (bitmap_count);
channel_count = GUINT16_FROM_LE (channel_count);
layer_mode = pika_layer_mode_from_psp_blend_mode (blend_mode);
if ((int) layer_mode == -1)
{
g_message ("Unsupported PSP layer blend mode %s "
"for layer %s, setting layer invisible",
blend_mode_name (blend_mode), layer_name);
layer_mode = PIKA_LAYER_MODE_NORMAL_LEGACY;
visibility = FALSE;
}
width = saved_image_rect[2] - saved_image_rect[0];
height = saved_image_rect[3] - saved_image_rect[1];
if ((width < 0) || (width > PIKA_MAX_IMAGE_SIZE) /* w <= 2^18 */
|| (height < 0) || (height > PIKA_MAX_IMAGE_SIZE) /* h <= 2^18 */
|| ((width / 256) * (height / 256) >= 8192)) /* w * h < 2^29 */
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid layer dimensions: %dx%d"),
width, height);
g_free (layer_name);
return NULL;
}
IFDBG(2) g_message
("layer: %s %dx%d (%dx%d) @%d,%d opacity %d blend_mode %s "
"%d bitmaps %d channels",
layer_name,
image_rect[2] - image_rect[0], image_rect[3] - image_rect[1],
width, height,
image_rect[0]+saved_image_rect[0], image_rect[1]+saved_image_rect[1],
opacity, blend_mode_name (blend_mode),
bitmap_count, channel_count);
IFDBG(2) g_message
("mask %dx%d (%dx%d) @%d,%d",
mask_rect[2] - mask_rect[0],
mask_rect[3] - mask_rect[1],
saved_mask_rect[2] - saved_mask_rect[0],
saved_mask_rect[3] - saved_mask_rect[1],
saved_mask_rect[0], saved_mask_rect[1]);
if (width == 0)
{
width++;
null_layer = TRUE;
}
if (height == 0)
{
height++;
null_layer = TRUE;
}
if (ia->base_type == PIKA_RGB)
if (bitmap_count == 1)
drawable_type = PIKA_RGB_IMAGE, bytespp = 3;
else
drawable_type = PIKA_RGBA_IMAGE, bytespp = 4;
else if (ia->base_type == PIKA_GRAY)
if (bitmap_count == 1)
drawable_type = PIKA_GRAY_IMAGE, bytespp = 1;
else
drawable_type = PIKA_GRAYA_IMAGE, bytespp = 2;
else
if (bitmap_count == 1)
drawable_type = PIKA_INDEXED_IMAGE, bytespp = 1;
else
drawable_type = PIKA_INDEXEDA_IMAGE, bytespp = 2;
bytespp *= ia->bytes_per_sample;
layer = pika_layer_new (image, layer_name,
width, height,
drawable_type,
100.0 * opacity / 255.0,
layer_mode);
g_free (layer_name);
if (! layer)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error creating layer"));
return NULL;
}
pika_image_insert_layer (image, layer, NULL, -1);
if (image_rect[0] != 0 || image_rect[1] != 0 || saved_image_rect[0] != 0 || saved_image_rect[1] != 0)
pika_layer_set_offsets (layer,
image_rect[0] + saved_image_rect[0], image_rect[1] + saved_image_rect[1]);
if (! visibility)
pika_item_set_visible (PIKA_ITEM (layer), FALSE);
pika_layer_set_lock_alpha (layer, transparency_protected);
if (can_handle_layer)
{
pixel = g_malloc0 (height * width * bytespp);
if (null_layer)
{
pixels = NULL;
}
else
{
pixels = g_new (guchar *, height);
for (i = 0; i < height; i++)
pixels[i] = pixel + width * bytespp * i;
}
buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (layer));
/* Read the layer channel sub-blocks */
while (ftell (f) < sub_block_start + sub_total_len)
{
sub_id = read_block_header (f, &channel_init_len,
&channel_total_len, error);
if (sub_id == -1)
{
pika_image_delete (image);
return NULL;
}
if (sub_id != PSP_CHANNEL_BLOCK)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid layer sub-block %s, should be CHANNEL"),
block_name (sub_id));
return NULL;
}
channel_start = ftell (f);
chunk_len = channel_init_len; /* init chunk_len for psp_ver_major == 3 */
if ((psp_ver_major >= 4
&& (fread (&chunk_len, 4, 1, f) < 1
|| ((chunk_len = GUINT32_FROM_LE (chunk_len)) < 16)))
|| fread (&compressed_len, 4, 1, f) < 1
|| fread (&uncompressed_len, 4, 1, f) < 1
|| fread (&bitmap_type, 2, 1, f) < 1
|| fread (&channel_type, 2, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading channel information chunk"));
return NULL;
}
compressed_len = GUINT32_FROM_LE (compressed_len);
uncompressed_len = GUINT32_FROM_LE (uncompressed_len);
bitmap_type = GUINT16_FROM_LE (bitmap_type);
channel_type = GUINT16_FROM_LE (channel_type);
if (bitmap_type > PSP_DIB_USER_MASK)
{
g_message ("Conversion of bitmap type %d is not supported.", bitmap_type);
}
else if (bitmap_type == PSP_DIB_USER_MASK)
{
/* FIXME: Add as layer mask */
g_message ("Conversion of layer mask is not supported");
}
else
{
if (channel_type > PSP_CHANNEL_BLUE)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid channel type %d in channel information chunk"),
channel_type);
return NULL;
}
IFDBG(2) g_message ("channel: %s %s %d (%d) bytes %d bytespp",
bitmap_type_name (bitmap_type),
channel_type_name (channel_type),
uncompressed_len, compressed_len,
bytespp);
if (bitmap_type == PSP_DIB_TRANS_MASK || channel_type == PSP_CHANNEL_COMPOSITE)
offset = bytespp - ia->bytes_per_sample;
else
offset = (channel_type - PSP_CHANNEL_RED) * ia->bytes_per_sample;
if (!null_layer)
{
if (try_fseek (f, channel_start + chunk_len, SEEK_SET, error) < 0)
{
return NULL;
}
if (read_channel_data (f, ia, pixels, bytespp, offset,
buffer, compressed_len, error) == -1)
{
return NULL;
}
}
}
if (try_fseek (f, channel_start + channel_total_len, SEEK_SET, error) < 0)
{
return NULL;
}
}
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, 0, width, height), 0,
NULL, pixel, GEGL_AUTO_ROWSTRIDE);
g_object_unref (buffer);
g_free (pixels);
g_free (pixel);
if (psp_ver_major >= 4)
{
if (try_fseek (f, sub_block_start + sub_total_len, SEEK_SET, error) < 0)
{
return NULL;
}
}
}
else
{
/* Can't handle this type of layer, skip the data so we can read the next layer. */
if (psp_ver_major >= 4)
{
if (try_fseek (f, sub_block_start + sub_total_len, SEEK_SET, error) < 0)
{
return NULL;
}
}
}
}
if (try_fseek (f, block_start + total_len, SEEK_SET, error) < 0)
{
return NULL;
}
return layer;
}
static gint
read_tube_block (FILE *f,
PikaImage *image,
guint total_len,
PSPimage *ia,
GError **error)
{
guint16 version;
guchar name[514];
guint32 step_size, column_count, row_count, cell_count;
guint32 placement_mode, selection_mode;
guint32 chunk_len;
gint i;
PikaPixPipeParams params;
PikaParasite *pipe_parasite;
gchar *parasite_text;
pika_pixpipe_params_init (&params);
if (psp_ver_major >= 4)
{
name[0] = 0;
if (fread (&chunk_len, 4, 1, f) < 1
|| fread (&version, 2, 1, f) < 1
|| fread (&step_size, 4, 1, f) < 1
|| fread (&column_count, 4, 1, f) < 1
|| fread (&row_count, 4, 1, f) < 1
|| fread (&cell_count, 4, 1, f) < 1
|| fread (&placement_mode, 4, 1, f) < 1
|| fread (&selection_mode, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading tube data chunk"));
return -1;
}
}
else
{
chunk_len = 0;
if (fread (&version, 2, 1, f) < 1
|| fread (name, 513, 1, f) < 1
|| fread (&step_size, 4, 1, f) < 1
|| fread (&column_count, 4, 1, f) < 1
|| fread (&row_count, 4, 1, f) < 1
|| fread (&cell_count, 4, 1, f) < 1
|| fread (&placement_mode, 4, 1, f) < 1
|| fread (&selection_mode, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading tube data chunk"));
return -1;
}
name[513] = 0;
}
version = GUINT16_FROM_LE (version);
params.step = GUINT32_FROM_LE (step_size);
params.cols = GUINT32_FROM_LE (column_count);
params.rows = GUINT32_FROM_LE (row_count);
params.ncells = GUINT32_FROM_LE (cell_count);
placement_mode = GUINT32_FROM_LE (placement_mode);
selection_mode = GUINT32_FROM_LE (selection_mode);
for (i = 1; i < params.cols; i++)
pika_image_add_vguide (image, (ia->width * i)/params.cols);
for (i = 1; i < params.rows; i++)
pika_image_add_hguide (image, (ia->height * i)/params.rows);
/* We use a parasite to pass in the tube (pipe) parameters in
* case we will have any use of those, for instance in the gpb
* plug-in that exports a PIKA image pipe.
*/
params.dim = 1;
params.cellwidth = ia->width / params.cols;
params.cellheight = ia->height / params.rows;
params.placement = (placement_mode == tpmRandom ? "random" :
(placement_mode == tpmConstant ? "constant" :
"default"));
params.rank[0] = params.ncells;
params.selection[0] = (selection_mode == tsmRandom ? "random" :
(selection_mode == tsmIncremental ? "incremental" :
(selection_mode == tsmAngular ? "angular" :
(selection_mode == tsmPressure ? "pressure" :
(selection_mode == tsmVelocity ? "velocity" :
"default")))));
parasite_text = pika_pixpipe_params_build (&params);
IFDBG(2) g_message ("parasite: %s", parasite_text);
pipe_parasite = pika_parasite_new ("pika-brush-pipe-parameters",
PIKA_PARASITE_PERSISTENT,
strlen (parasite_text) + 1, parasite_text);
pika_image_attach_parasite (image, pipe_parasite);
pika_parasite_free (pipe_parasite);
g_free (parasite_text);
return 0;
}
static const gchar *
compression_name (gint compression)
{
switch (compression)
{
case PSP_COMP_NONE:
return "no compression";
case PSP_COMP_RLE:
return "RLE";
case PSP_COMP_LZ77:
return "LZ77";
}
g_assert_not_reached ();
return NULL;
}
static gint
read_selection_block (FILE *f,
PikaImage *image,
guint total_len,
PSPimage *ia,
GError **error)
{
gsize current_location;
gsize file_size;
guint32 chunk_size;
guint32 rect[4];
current_location = ftell (f);
fseek (f, 0, SEEK_END);
file_size = ftell (f);
fseek (f, current_location, SEEK_SET);
if (fread (&chunk_size, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading selection chunk"));
return -1;
}
chunk_size = GUINT32_FROM_LE (chunk_size);
current_location = ftell (f);
if (chunk_size > (file_size - current_location))
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid selection chunk size"));
return -1;
}
if (fread (&rect, 16, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading selection chunk"));
return -1;
}
swab_rect (rect);
pika_image_select_rectangle (image, PIKA_CHANNEL_OP_ADD,
rect[0], rect[1],
rect[2] - rect[0],
rect[3] - rect[1]);
/* The file format specifies multiple selections, but
* as of PSP 8 they only allow one. Skipping the remaining
* information in the block. */
total_len -= sizeof (guint32) + sizeof (rect);
if (try_fseek (f, total_len, SEEK_SET, error) < 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading end of selection chunk"));
return -1;
}
return 0;
}
static gint
read_extended_block (FILE *f,
PikaImage *image,
guint total_len,
PSPimage *ia,
GError **error)
{
guchar header[4];
guint16 field_type;
guint32 field_length;
while (total_len > 0)
{
if (fread (header, 4, 1, f) < 1 ||
fread (&field_type, 2, 1, f) < 1 ||
fread (&field_length, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading extended block chunk header"));
return -1;
}
if (memcmp (header, "~FL\0", 4) != 0)
{
g_print ("Header: %s\n", header);
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid extended block chunk header"));
return -1;
}
total_len -= sizeof (header) + sizeof (field_type) + sizeof (field_length);
field_type = GUINT16_FROM_LE (field_type);
field_length = GUINT32_FROM_LE (field_length);
if (field_length > total_len)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid extended block chunk size"));
return -1;
}
switch (field_type)
{
case PSP_XDATA_GRID:
{
PikaRGB color;
guchar rgb[4];
guint32 h_spacing;
guint32 v_spacing;
guint16 unit; /* Unused */
if (field_length != 14 ||
fread (rgb, 4, 1, f) < 1 ||
fread (&h_spacing, 4, 1, f) < 1 ||
fread (&v_spacing, 4, 1, f) < 1 ||
fread (&unit, 2, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading extended chunk grid data"));
return -1;
}
h_spacing = GUINT32_FROM_LE (h_spacing);
v_spacing = GUINT32_FROM_LE (v_spacing);
pika_image_grid_set_spacing (image, h_spacing, v_spacing);
pika_rgba_set_uchar (&color, rgb[0], rgb[1], rgb[2], 255);
pika_image_grid_set_foreground_color (image, &color);
pika_image_grid_set_background_color (image, &color);
}
break;
case PSP_XDATA_GUIDE:
{
guchar rgb[4]; /* Unused */
guint32 offset;
guint16 orientation;
if (field_length != 10 ||
fread (rgb, 4, 1, f) < 1 ||
fread (&offset, 4, 1, f) < 1 ||
fread (&orientation, 2, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading extended chunk guide data"));
return -1;
}
offset = GUINT32_FROM_LE (offset);
orientation = GUINT16_FROM_LE (orientation);
if (orientation == keHorizontalGuide)
{
pika_image_add_hguide (image, offset);
}
else if (orientation == keVerticalGuide)
{
pika_image_add_vguide (image, offset);
}
else
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Invalid guide orientation"));
return -1;
}
}
break;
/* Not yet implemented */
case PSP_XDATA_TRNS_INDEX:
case PSP_XDATA_EXIF:
case PSP_XDATA_IPTC:
default:
if (try_fseek (f, field_length, SEEK_CUR, error) < 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading extended block chunk"));
return -1;
}
break;
}
total_len -= field_length;
}
return 0;
}
static gint
read_colorprofile_block (FILE *f,
PikaImage *image,
guint total_len,
PSPimage *ia,
GError **error)
{
guint psp_header_size;
guint icc_profile_size;
gchar *icc_profile;
PikaColorProfile *profile;
if (fread (&psp_header_size, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading colorprofile chunk"));
return -1;
}
psp_header_size = GUINT32_FROM_LE (psp_header_size);
/* The next part is a 2 byte length value, followed by PSP's
* internal name for the profile. We'll skip most of it,
* except for the last 4 bytes which is the profile size */
if (try_fseek (f, psp_header_size - 8, SEEK_CUR, error) < 0 ||
fread (&icc_profile_size, 4, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading colorprofile chunk"));
return -1;
}
icc_profile_size = GUINT32_FROM_LE (icc_profile_size);
/* The rest of the code references load_resource_1039 ()
* in psd-image-res-load.c */
icc_profile = g_malloc (icc_profile_size);
if (fread (icc_profile, icc_profile_size, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading colorprofile chunk"));
return -1;
}
profile = pika_color_profile_new_from_icc_profile ((guint8 *) icc_profile,
icc_profile_size,
NULL);
pika_image_set_color_profile (image, profile);
g_object_unref (profile);
g_free (icc_profile);
return 0;
}
/* The main function for loading PSP-images
*/
static PikaImage *
load_image (GFile *file,
GError **error)
{
FILE *f;
GStatBuf st;
char buf[32];
PSPimage ia;
guint32 block_init_len, block_total_len;
long block_start;
PSPBlockID id = -1;
gint block_number;
PikaImage *image = NULL;
if (g_stat (g_file_peek_path (file), &st) == -1)
{
return NULL;
}
f = g_fopen (g_file_peek_path (file), "rb");
if (! f)
{
g_set_error (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));
return NULL;
}
/* Read the PSP File Header and determine file version */
if (fread (buf, 32, 1, f) < 1
|| fread (&psp_ver_major, 2, 1, f) < 1
|| fread (&psp_ver_minor, 2, 1, f) < 1)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Error reading file header."));
goto error;
}
if (memcmp (buf, "Paint Shop Pro Image File\n\032\0\0\0\0\0", 32) != 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Incorrect file signature."));
goto error;
}
psp_ver_major = GUINT16_FROM_LE (psp_ver_major);
psp_ver_minor = GUINT16_FROM_LE (psp_ver_minor);
/* We don't have the documentation for file format versions before 3.0,
* but newer versions should be mostly backwards compatible so that
* we can still read the image and skip unknown parts safely.
*/
if (psp_ver_major < 3)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Unsupported PSP file format version %d.%d."),
psp_ver_major, psp_ver_minor);
goto error;
}
/* Read all the blocks */
block_number = 0;
IFDBG(3) g_message ("size = %d", (int)st.st_size);
while (ftell (f) != st.st_size
&& (id = read_block_header (f, &block_init_len,
&block_total_len, error)) != -1)
{
block_start = ftell (f);
if (block_start + block_total_len > st.st_size)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Could not open '%s' for reading: %s"),
pika_file_get_utf8_name (file),
_("invalid block size"));
goto error;
}
if (id == PSP_IMAGE_BLOCK)
{
if (block_number != 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Duplicate General Image Attributes block."));
goto error;
}
if (read_general_image_attribute_block (f, block_init_len,
block_total_len, &ia, error) == -1)
{
goto error;
}
IFDBG(2) g_message ("%d dpi %dx%d %s",
(int) ia.resolution,
ia.width, ia.height,
compression_name (ia.compression));
image = pika_image_new_with_precision (ia.width, ia.height,
ia.base_type, ia.precision);
if (! image)
{
goto error;
}
pika_image_set_resolution (image, ia.resolution, ia.resolution);
}
else
{
if (block_number == 0)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Missing General Image Attributes block."));
goto error;
}
switch (id)
{
case PSP_CREATOR_BLOCK:
if (read_creator_block (f, image, block_total_len, &ia, error) == -1)
goto error;
break;
case PSP_COLOR_BLOCK:
if (read_color_block (f, image, block_total_len, &ia, error) == -1)
goto error;
break;
case PSP_LAYER_START_BLOCK:
if (! read_layer_block (f, image, block_total_len, &ia, error))
goto error;
break;
case PSP_SELECTION_BLOCK:
if (read_selection_block (f, image, block_total_len, &ia,
error) == -1)
goto error;
break;
case PSP_ALPHA_BANK_BLOCK:
break; /* Not yet implemented */
case PSP_THUMBNAIL_BLOCK:
break; /* No use for it */
case PSP_EXTENDED_DATA_BLOCK:
if (read_extended_block (f, image, block_total_len, &ia,
error) == -1)
goto error;
break;
case PSP_TUBE_BLOCK:
if (read_tube_block (f, image, block_total_len, &ia, error) == -1)
goto error;
break;
case PSP_COMPOSITE_IMAGE_BANK_BLOCK:
break; /* Not yet implemented */
case PSP_TABLE_BANK_BLOCK:
break; /* Not yet implemented */
case PSP_BRUSH_BLOCK:
break; /* Not yet implemented */
case PSP_ART_MEDIA_BLOCK:
case PSP_ART_MEDIA_MAP_BLOCK:
case PSP_ART_MEDIA_TILE_BLOCK:
case PSP_ART_MEDIA_TEXTURE_BLOCK:
break; /* Not yet implemented */
case PSP_COLORPROFILE_BLOCK:
if (read_colorprofile_block (f, image, block_total_len, &ia,
error) == -1)
goto error;
break;
case PSP_LAYER_BLOCK:
case PSP_CHANNEL_BLOCK:
case PSP_ALPHA_CHANNEL_BLOCK:
case PSP_ADJUSTMENT_EXTENSION_BLOCK:
case PSP_VECTOR_EXTENSION_BLOCK:
case PSP_SHAPE_BLOCK:
case PSP_PAINTSTYLE_BLOCK:
case PSP_COMPOSITE_ATTRIBUTES_BLOCK:
case PSP_JPEG_BLOCK:
case PSP_LINESTYLE_BLOCK:
case PSP_TABLE_BLOCK:
case PSP_PAPER_BLOCK:
case PSP_PATTERN_BLOCK:
case PSP_GRADIENT_BLOCK:
case PSP_GROUP_EXTENSION_BLOCK:
case PSP_MASK_EXTENSION_BLOCK:
case PSP_RASTER_EXTENSION_BLOCK:
g_message ("Sub-block %s should not occur "
"at main level of file",
block_name (id));
break;
default:
g_message ("Unrecognized block id %d", id);
break;
}
}
if (block_start + block_total_len >= st.st_size)
break;
if (try_fseek (f, block_start + block_total_len, SEEK_SET, error) < 0)
goto error;
block_number++;
}
if (id == -1)
{
error:
fclose (f);
if (image)
pika_image_delete (image);
return NULL;
}
fclose (f);
return image;
}
static gint
save_image (GFile *file,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GObject *config,
GError **error)
{
g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
_("Exporting not implemented yet."));
return FALSE;
}
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