1 /* 2 * Copyright (C) 2009 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 #ifndef UTILS_H_ 18 19 #define UTILS_H_ 20 21 #include <stdint.h> 22 23 namespace android { 24 25 #define FOURCC(c1, c2, c3, c4) \ 26 (c1 << 24 | c2 << 16 | c3 << 8 | c4) 27 28 uint16_t U16_AT(const uint8_t *ptr); 29 uint32_t U32_AT(const uint8_t *ptr); 30 uint64_t U64_AT(const uint8_t *ptr); 31 32 uint16_t U16LE_AT(const uint8_t *ptr); 33 uint32_t U32LE_AT(const uint8_t *ptr); 34 uint64_t U64LE_AT(const uint8_t *ptr); 35 36 uint64_t ntoh64(uint64_t x); 37 uint64_t hton64(uint64_t x); 38 39 } // namespace android 40 41 #endif // UTILS_H_ 42