Add libexif to deps/third_party.

libexif/sources/libexif/exif-mem.c

Index: libexif/sources/libexif/exif-mem.c
===================================================================
--- libexif/sources/libexif/exif-mem.c	(revision 0)
+++ libexif/sources/libexif/exif-mem.c	(revision 0)
@@ -0,0 +1,119 @@
+ /* exif-mem.c
+  *
+  * Copyright (c) 2003 Lutz Mueller <lutz@users.sourceforge.net>
+  *
+  * This library is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU Lesser General Public
+  * License as published by the Free Software Foundation; either
+  * version 2 of the License, or (at your option) any later version.
+  *
+  * This library 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
+  * Lesser General Public License for more details.
+  *
+  * You should have received a copy of the GNU Lesser General Public
+  * License along with this library; if not, write to the
+  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  * Boston, MA  02110-1301  USA.
+  */
+
+#include <libexif/exif-mem.h>
+
+#include <stdlib.h>
+
+struct _ExifMem {
+	unsigned int ref_count;
+	ExifMemAllocFunc alloc_func;
+	ExifMemReallocFunc realloc_func;
+	ExifMemFreeFunc free_func;
+};
+
+/*! Default memory allocation function. */
+static void *
+exif_mem_alloc_func (ExifLong ds)
+{
+	return calloc ((size_t) ds, 1);
+}
+
+/*! Default memory reallocation function. */
+static void *
+exif_mem_realloc_func (void *d, ExifLong ds)
+{
+	return realloc (d, (size_t) ds);
+}
+
+/*! Default memory free function. */
+static void
+exif_mem_free_func (void *d)
+{
+	free (d);
+}
+
+ExifMem *
+exif_mem_new (ExifMemAllocFunc alloc_func, ExifMemReallocFunc realloc_func,
+	      ExifMemFreeFunc free_func)
+{
+	ExifMem *mem;
+
+	if (!alloc_func && !realloc_func) 
+		return NULL;
+	mem = alloc_func ? alloc_func (sizeof (ExifMem)) :
+		           realloc_func (NULL, sizeof (ExifMem));
+	if (!mem) return NULL;
+	mem->ref_count = 1;
+
+	mem->alloc_func   = alloc_func;
+	mem->realloc_func = realloc_func;
+	mem->free_func    = free_func;
+
+	return mem;
+}
+
+void
+exif_mem_ref (ExifMem *mem)
+{
+	if (!mem) return;
+	mem->ref_count++;
+}
+
+void
+exif_mem_unref (ExifMem *mem)
+{
+	if (!mem) return;
+	if (!--mem->ref_count)
+		exif_mem_free (mem, mem);
+}
+
+void
+exif_mem_free (ExifMem *mem, void *d)
+{
+	if (!mem) return;
+	if (mem->free_func) {
+		mem->free_func (d);
+		return;
+	}
+}
+
+void *
+exif_mem_alloc (ExifMem *mem, ExifLong ds)
+{
+	if (!mem) return NULL;
+	if (mem->alloc_func || mem->realloc_func)
+		return mem->alloc_func ? mem->alloc_func (ds) :
+					 mem->realloc_func (NULL, ds);
+	return NULL;
+}
+
+void *
+exif_mem_realloc (ExifMem *mem, void *d, ExifLong ds)
+{
+	return (mem && mem->realloc_func) ? mem->realloc_func (d, ds) : NULL;
+}
+
+ExifMem *
+exif_mem_new_default (void)
+{
+	return exif_mem_new (exif_mem_alloc_func, exif_mem_realloc_func,
+			     exif_mem_free_func);
+}
Property changes on: libexif/sources/libexif/exif-mem.c
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Added: svn:eol-style
   + LF