From 7b7cd6da61b1fcc0f2a3ecce2cb9e6c42782c717 Mon Sep 17 00:00:00 2001
From: Henning Makholm <henning@makholm.net>
Date: Fri, 27 Jan 2006 18:00:00 -0500
Subject: Import of release 0.7

---
(limited to 'xcftools.h')

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 */
--
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