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Diffstat (limited to 'xcftools.h')
| -rw-r--r-- | xcftools.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/xcftools.h b/xcftools.h new file mode 100644 index 0000000..9ae1dff --- /dev/null +++ b/xcftools.h @@ -0,0 +1,183 @@ +/* Generic functions and macros for reading XCF files + * + * Copyright (C) 2006 Henning Makholm + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef XCFTOOLS_H +#define XCFTOOLS_H + +#include "config.h" +#include "enums.h" +#include <stddef.h> +#include <stdio.h> + +/* Change to gettext for l10n */ +#define _(s) (s) +#define N_(s) (s) + +#if HAVE_INTTYPES_H +# define __STDC_FORMAT_MACROS +# include <inttypes.h> +#else +/* These legacy fall-backs will probably work on every system + * that does not supply a inttypes.h ... */ +typedef unsigned char uint8_t ; +typedef unsigned long int uint32_t, uintptr_t ; +typedef signed char int8_t ; +typedef signed long int int32_t ; +# define PRIX32 "lX" +# define PRIu32 "lu" +# define PRIXPTR "lX" +#endif + +#if __GNUC__ +# define __ATTRIBUTE__ __attribute__ +#else +# define __ATTRIBUTE__(x) +#endif + +#if HAVE_NETINET_IN_H +# include <netinet/in.h> +#elif HAVE_ARPA_INET_H +# include <arpa/inet.h> +#elif WORDS_BIGENDIAN +# define ntohl(x) (x) +#else +static inline uint32_t ntohl(uint32_t a) { + return (a << 24) + ((a & 0xFF00) << 8) + ((a >> 8) & 0xFF00) + (a >> 24) ; +} +#endif + +#ifndef HAVE_STRCASECMP +#define strcasecmp strcmp +#endif + +/* Read a single word value from the XCF file */ + +/* Use + instead of | because that allows LEA instructions */ +#define xcfBE(a) ( ((uint32_t)xcf_file[(a) ] << 24) + \ + ((uint32_t)xcf_file[(a)+1] << 16) + \ + ((uint32_t)xcf_file[(a)+2] << 8 ) + \ + ((uint32_t)xcf_file[(a)+3] ) ) +#define xcfLE(a) ( ((uint32_t)xcf_file[(a) ] ) + \ + ((uint32_t)xcf_file[(a)+1] << 8 ) + \ + ((uint32_t)xcf_file[(a)+2] << 16) + \ + ((uint32_t)xcf_file[(a)+3] << 24) ) + +#if CAN_DO_UNALIGNED_WORDS +# define xcfL(a) ntohl(*(uint32_t *)(xcf_file + (a))) +#else +# define xcfL(a) ((a) & 3 ? xcfBE(a) : ntohl(*(uint32_t *)(xcf_file + (a)))) +#endif + +/* ****************************************************************** */ + +/* The following are exported from am OS-specific source file; + * io-unix.c on unixish systems. + */ +void read_or_mmap_xcf(const char* filename, const char *unzipper); +void free_or_close_xcf(void); + +/* ****************************************************************** */ +/* utils.c */ + +extern const char *progname ; +extern int verboseFlag ; + +void *xcfmalloc(size_t size); +void xcffree(void*); + +void FatalGeneric(int status,const char* format,...) + __ATTRIBUTE__((format(printf,2,3),noreturn)) ; +void FatalUnexpected(const char* format,...) + __ATTRIBUTE__((format(printf,1,2),noreturn)) ; +void FatalBadXCF(const char* format,...) + __ATTRIBUTE__((format(printf,1,2),noreturn)) ; +void FatalUnsupportedXCF(const char* format,...) + __ATTRIBUTE__((format(printf,1,2),noreturn)) ; + +void gpl_blurb(void) __ATTRIBUTE__((noreturn)); + +FILE* openout(const char*); +void closeout(FILE *,const char*); + +struct rect { + int t, b, l, r ; +}; + +#define isSubrect(A,B) \ + ((A).l >= (B).l && (A).r <= (B).r && (A).t >= (B).t && (A).b <= (B).b) +#define disjointRects(A,B) \ + ((A).l >= (B).r || (A).r <= (B).l || (A).t >= (B).b || (A).b <= (B).t) + +/* ****************************************************************** */ +/* xcf-general.c */ + +extern uint8_t *xcf_file ; +extern size_t xcf_length ; +extern int use_utf8 ; + +void xcfCheckspace(uint32_t addr,int spaceafter, const char *format,...) + __ATTRIBUTE__((format(printf,3,4))); +uint32_t xcfOffset(uint32_t addr,int spaceafter); + +int xcfNextprop(uint32_t *master,uint32_t *body); +const char* xcfString(uint32_t ptr,uint32_t *after); + +/* These are hardcoded in the Gimp sources: */ +#define TILE_WIDTH 64 +#define TILE_HEIGHT 64 + +struct tileDimensions { + struct rect c ; + unsigned width, height ; + unsigned tilesx, tilesy ; + unsigned ntiles ; +}; +/* computeDimensions assumes that width, height, c.l, and c.t are set */ +void computeDimensions(struct tileDimensions *); + +struct xcfTiles { + const struct _convertParams *params ; + uint32_t *tileptrs ; + uint32_t hierarchy ; +}; + +struct xcfLayer { + struct tileDimensions dim ; + const char *name ; + GimpLayerModeEffects mode ; + GimpImageType type ; + unsigned int opacity ; + int isVisible, hasMask ; + uint32_t propptr ; + struct xcfTiles pixels ; + struct xcfTiles mask ; +}; + +extern struct xcfImage { + int version ; + unsigned width, height ; + GimpImageBaseType type ; + XcfCompressionType compression ; + int numLayers ; + struct xcfLayer *layers ; + uint32_t colormapptr ; +} XCF ; + +void getBasicXcfInfo(void); + +#endif /* XCFTOOLS_H */ |