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Diffstat (limited to 'source/blender/img/intern/IMG_MemPtr.h')
-rw-r--r--source/blender/img/intern/IMG_MemPtr.h114
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diff --git a/source/blender/img/intern/IMG_MemPtr.h b/source/blender/img/intern/IMG_MemPtr.h
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+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License. See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ * @author Maarten Gribnau
+ * @date March 8, 2001
+ */
+
+#ifndef _H_IMG_MemPtr
+#define _H_IMG_MemPtr
+
+#include <stddef.h>
+
+/**
+ * A memory pointer for memory of any type.
+ * It can be used to avoid memory leaks when allocating memory in constructors.
+ * @author Maarten Gribnau
+ * @date March 8, 2001
+ */
+
+template <class T> class IMG_MemPtr {
+public:
+ /** Pointer to the memory */
+ T* m_p;
+ bool m_owned;
+
+ /**
+ * Size exception.
+ * A size exception is thrown when an invalid width and/or height is passed.
+ */
+ class Size {};
+ /**
+ * Memory exception.
+ * A size exception is thrown when a there is not enough memory to allocate the image.
+ */
+ class Memory {};
+
+ /**
+ * Constructs a memory pointer.
+ * @param s requested size of the pointer
+ * @throw <Size> when an invalid width and/or height is passed.
+ * @throw <Memory> when a there is not enough memory to allocate the image.
+ */
+ IMG_MemPtr(size_t s)
+ : m_p(0), m_owned(false)
+ {
+ if (s > 0) {
+ m_p = new T[s];
+ if (!m_p) {
+ throw Memory();
+ }
+ m_owned = true;
+ }
+ else {
+ throw Size();
+ }
+ }
+
+ /**
+ * Constructs a memory pointer from a pointer.
+ * @param p the pointer
+ * @param s requested size of the pointer
+ * @throw <Size> when an invalid width and/or height is passed.
+ */
+ IMG_MemPtr(void* p, size_t s)
+ : m_p(0), m_owned(false)
+ {
+ if (p && (s > 0)) {
+ m_p = (T*)p;
+ }
+ else {
+ throw Size();
+ }
+ }
+
+ /**
+ * Destructor.
+ */
+ ~IMG_MemPtr() { if (m_p && m_owned) { delete [] m_p; m_p = 0; } }
+
+ /**
+ * Access to the memory.
+ * @return pointer to the memory
+ */
+ operator T*() { return m_p; }
+};
+
+#endif // _H_IMG_MemPtr