add endian switch functions to replace macros SWITCH_INT/LONG/SHORT, with BLI_endian_switch_int32/int64/float/double...

1 files changed, 116 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_endian_switch_inline.h b/source/blender/blenlib/BLI_endian_switch_inline.h
new file mode 100644
index 00000000000..b747da3b738
--- /dev/null
+++ b/source/blender/blenlib/BLI_endian_switch_inline.h
@@ -0,0 +1,116 @@
+/*
+ * ***** BEGIN GPL 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.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Campbell Barton
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/* only include from header */
+#ifndef __BLI_ENDIAN_SWITCH_H__
+#  error "this file isnt to be directly included"
+#endif
+
+#ifndef __BLI_ENDIAN_SWITCH_INLINE_H__
+#define __BLI_ENDIAN_SWITCH_INLINE_H__
+
+/** \file blender/blenlib/BLI_endian_switch_inline.h
+ *  \ingroup bli
+ */
+
+
+BLI_INLINE void BLI_endian_switch_int16(short *val)
+{
+	char *p_i = (char *)val;
+	char s_i;
+
+	s_i    = p_i[0];
+	p_i[0] = p_i[1];
+	p_i[1] = s_i;
+}
+
+BLI_INLINE void BLI_endian_switch_uint16(unsigned short *val)
+{
+	char *p_i = (char *)val;
+	char s_i;
+
+	s_i    = p_i[0];
+	p_i[0] = p_i[1];
+	p_i[1] = s_i;
+}
+
+BLI_INLINE void BLI_endian_switch_int32(int *val)
+{
+	char *p_i = (char *)val;
+	char s_i;
+
+	s_i = p_i[0]; p_i[0] = p_i[3]; p_i[3] = s_i;
+	s_i = p_i[1]; p_i[1] = p_i[2]; p_i[2] = s_i;
+}
+
+BLI_INLINE void BLI_endian_switch_uint32(unsigned int *val)
+{
+	char *p_i = (char *)val;
+	char s_i;
+
+	s_i = p_i[0]; p_i[0] = p_i[3]; p_i[3] = s_i;
+	s_i = p_i[1]; p_i[1] = p_i[2]; p_i[2] = s_i;
+}
+
+BLI_INLINE void BLI_endian_switch_float(float *val)
+{
+	char *p_i = (char *)val;
+	char s_i;
+
+	s_i = p_i[0]; p_i[0] = p_i[3]; p_i[3] = s_i;
+	s_i = p_i[1]; p_i[1] = p_i[2]; p_i[2] = s_i;
+}
+
+BLI_INLINE void BLI_endian_switch_int64(int64_t *val)
+{
+	char *p_i = (char *)val;
+	char s_i;
+
+	s_i = p_i[0]; p_i[0] = p_i[7]; p_i[7] = s_i;
+	s_i = p_i[1]; p_i[1] = p_i[6]; p_i[6] = s_i;
+	s_i = p_i[2]; p_i[2] = p_i[5]; p_i[5] = s_i;
+	s_i = p_i[3]; p_i[3] = p_i[4]; p_i[4] = s_i;
+}
+
+BLI_INLINE void BLI_endian_switch_uint64(uint64_t *val)
+{
+	char *p_i = (char *)val;
+	char s_i;
+
+	s_i = p_i[0]; p_i[0] = p_i[7]; p_i[7] = s_i;
+	s_i = p_i[1]; p_i[1] = p_i[6]; p_i[6] = s_i;
+	s_i = p_i[2]; p_i[2] = p_i[5]; p_i[5] = s_i;
+	s_i = p_i[3]; p_i[3] = p_i[4]; p_i[4] = s_i;
+}
+
+BLI_INLINE void BLI_endian_switch_double(double *val)
+{
+	char *p_i = (char *)val;
+	char s_i;
+
+	s_i = p_i[0]; p_i[0] = p_i[7]; p_i[7] = s_i;
+	s_i = p_i[1]; p_i[1] = p_i[6]; p_i[6] = s_i;
+	s_i = p_i[2]; p_i[2] = p_i[5]; p_i[5] = s_i;
+	s_i = p_i[3]; p_i[3] = p_i[4]; p_i[4] = s_i;
+}
+
+#endif  /* __BLI_ENDIAN_SWITCH_INLINE_H__ */