135 lines
4.2 KiB
C
135 lines
4.2 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
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*
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* PIKA Plug-in for Windows Icon files.
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* Copyright (C) 2002 Christian Kreibich <christian@whoop.org>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __ICO_H__
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#define __ICO_H__
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#ifdef ICO_DBG
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#define D(x) \
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{ \
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printf("ICO plugin: "); \
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printf x; \
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}
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#else
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#define D(x)
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#endif
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#define PLUG_IN_BINARY "file-ico"
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#define PLUG_IN_ROLE "pika-file-ico"
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#define ICO_PNG_MAGIC 0x474e5089
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#define ICO_ALPHA_THRESHOLD 127
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#define ICO_MAXBUF 4096
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typedef struct _IcoFileHeader
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{
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guint16 reserved;
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guint16 resource_type;
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guint16 icon_count;
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} IcoFileHeader;
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typedef struct _IcoFileEntry
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{
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guint8 width; /* Width of icon in pixels */
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guint8 height; /* Height of icon in pixels */
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guint8 num_colors; /* Number of colors of paletted image */
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guint8 reserved; /* Must be 0 */
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guint16 planes; /* Must be 1 for ICO, x position of hot spot for CUR */
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guint16 bpp; /* 1, 4, 8, 24 or 32 bits per pixel for ICO, y position of hot spot for CUR */
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guint32 size; /* Size of icon (including data header) */
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guint32 offset; /* Absolute offset of data in a file */
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} IcoFileEntry;
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typedef struct _IcoFileDataHeader
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{
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guint32 header_size; /* 40 bytes */
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guint32 width; /* Width of image in pixels */
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guint32 height; /* Height of image in pixels */
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guint16 planes; /* Must be 1 */
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guint16 bpp;
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guint32 compression; /* Not used for icons */
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guint32 image_size; /* Size of image (without this header) */
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guint32 x_res;
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guint32 y_res;
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guint32 used_clrs;
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guint32 important_clrs;
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} IcoFileDataHeader;
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typedef struct _IcoLoadInfo
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{
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guint width;
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guint height;
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gint bpp;
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gint planes;
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gint offset;
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gint size;
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} IcoLoadInfo;
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typedef struct _IcoSaveInfo
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{
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gint *depths;
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gint *default_depths;
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gboolean *compress;
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GList *layers;
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gint num_icons;
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gboolean is_cursor;
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gint *hot_spot_x;
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gint *hot_spot_y;
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} IcoSaveInfo;
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typedef struct _AniFileHeader
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{
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guint32 bSizeOf; /* Number of bytes in AniFileHeader (36 bytes) */
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guint32 frames; /* Number of unique icons in this cursor */
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guint32 steps; /* Number of Blits before the animation cycles */
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guint32 x, y; /* Reserved, must be zero. */
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guint32 bpp, planes; /* Reserved, must be zero. */
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guint32 jif_rate; /* Default Jiffies (1/60th of a second) if rate chunk's not present. */
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guint32 flags; /* Animation Flag */
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} AniFileHeader;
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typedef struct _AniSaveInfo
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{
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gchar *inam; /* Cursor name metadata */
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gchar *iart; /* Author name metadata */
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} AniSaveInfo;
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/* Miscellaneous helper functions below: */
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gint ico_rowstride (gint width,
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gint bpp);
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/* Allocates a 32-bit padded bitmap for various color depths.
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Returns the allocated array directly, and the length of the
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array in the len pointer */
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guint8 * ico_alloc_map (gint width,
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gint height,
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gint bpp,
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gint *len);
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#endif /* __ICO_H__ */
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