M4_Utils.h revision b5c7784c96a606890eb8a8b560153ef4a5d1a0d9 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16/**
17*************************************************************************
18 * @file    M4_Utils.h
19 * @brief    Utilities
20 * @note    This file defines utility macros
21*************************************************************************
22*/
23#ifndef __M4_UTILS_H__
24#define __M4_UTILS_H__
25
26#ifdef __cplusplus
27extern "C" {
28#endif
29
30/*    M4_MediaTime definition
31    This type is used internally by some shell components */
32#include "M4OSA_Types.h"
33typedef M4OSA_Double    M4_MediaTime;
34
35/*    GET_MEMORY32 macro definition
36    This macro is used by the 3GP reader*/
37#ifdef __BIG_ENDIAN
38#define GET_MEMORY32(x) (x)
39#else
40#define GET_MEMORY32(x) ( (((x)&0xff)<<24) | (((x)&0xff00)<<8) |\
41     (((x)&0xff0000)>>8) | (((x)&0xff000000)>>24) )
42#endif /*__BIG_ENDIAN*/
43
44#ifdef __cplusplus
45}
46#endif
47
48#endif /* __M4_UTILS_H__*/
49
50