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1 /* |
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2 * OpenAL Bridge - a simple portable library for OpenAL interface |
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3 * Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com> |
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4 * |
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5 * This program is free software; you can redistribute it and/or modify |
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6 * it under the terms of the GNU General Public License as published by |
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7 * the Free Software Foundation; version 2 of the License |
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8 * |
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9 * This program is distributed in the hope that it will be useful, |
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 * GNU General Public License for more details. |
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13 * |
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14 * You should have received a copy of the GNU General Public License |
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15 * along with this program; if not, write to the Free Software |
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16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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17 */ |
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18 |
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19 #include <stdio.h> |
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20 #include <stdlib.h> |
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21 #include <stdint.h> |
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22 #include "endianness.h" |
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23 |
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24 #ifdef __CPLUSPLUS |
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25 extern "C" { |
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26 #endif |
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27 |
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28 //from big endian to little endian |
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29 int invert_endianness(int number){ |
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30 uint8_t n1,n2,n3,n4; |
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31 uint32_t a1,a2,a3,a4; |
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32 uint32_t done = 0; |
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33 |
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34 n1 = number; |
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35 n2 = number >> 8; |
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36 n3 = number >> 16; |
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37 n4 = number >> 24; |
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38 |
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39 //printf("%X, %X, %X, %X\n", n1, n2, n3, n4); |
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40 a1 = (uint32_t) n1 << 24; |
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41 a2 = (uint32_t) n2 << 16; |
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42 a3 = (uint32_t) n3 << 8; |
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43 a4 = (uint32_t) n4; |
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44 done = a1 + a2 + a3 + a4; |
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45 //printf("%08X %08X %08X %08X = %08X\n", a1, a2, a3, a4, done); |
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46 return done; |
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47 } |
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48 |
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49 #ifdef __CPLUSPLUS |
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50 } |
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51 #endif |