1 files changed, 59 insertions, 0 deletions
diff --git a/include/fitz/base.h b/include/fitz/base.h
new file mode 100644
index 00000000..36fe0aeb
--- /dev/null
+++ b/include/fitz/base.h
@@ -0,0 +1,59 @@
+#undef nil
+#define nil ((void*)0)
+
+#undef offsetof
+#define offsetof(s, m) (unsigned long)(&(((s*)0)->m))
+
+#undef ABS
+#define ABS(x) ( (x) < 0 ? -(x) : (x) )
+
+#undef MAX
+#define MAX(a,b) ( (a) > (b) ? (a) : (b) )
+
+#undef MIN
+#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
+
+#undef CLAMP
+#define CLAMP(x,a,b) ( (x) > (b) ? (b) : ( (x) < (a) ? (a) : (x) ) )
+
+#define MAX4(a,b,c,d) MAX(MAX(a,b), MAX(c,d))
+#define MIN4(a,b,c,d) MIN(MIN(a,b), MIN(c,d))
+
+#define STRIDE(n, bcp) (((bpc) * (n) + 7) / 8)
+
+typedef struct fz_error_s fz_error;
+
+struct fz_error_s
+{
+	char msg[184];
+	char file[32];
+	char func[32];
+	int line;
+	int frozen;
+};
+
+#define fz_outofmem (&fz_koutofmem)
+extern fz_error fz_koutofmem;
+
+#define fz_throw(fmt, ...) fz_throw0(__func__, __FILE__, __LINE__, fmt, ## __VA_ARGS__)
+fz_error *fz_throw0(const char *func, const char *file, int line, char *fmt, ...);
+void fz_warn(char *fmt, ...);
+void fz_abort(fz_error *eo);
+void fz_freeerror(fz_error *eo);
+
+typedef struct fz_memorycontext_s fz_memorycontext;
+
+struct fz_memorycontext_s
+{
+	void * (*malloc)(fz_memorycontext *, int);
+	void * (*realloc)(fz_memorycontext *, void *, int);
+	void (*free)(fz_memorycontext *, void *);
+};
+
+fz_memorycontext *fz_currentmemorycontext(void);
+void fz_setmemorycontext(fz_memorycontext *memorycontext);
+
+void *fz_malloc(int n);
+void *fz_realloc(void *p, int n);
+void fz_free(void *p);
+