Utils.cpp revision ee7ff20e69498ebd53dd9717a0f984188341a75e
120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber/* 220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Copyright (C) 2009 The Android Open Source Project 320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * you may not use this file except in compliance with the License. 620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * You may obtain a copy of the License at 720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 1020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Unless required by applicable law or agreed to in writing, software 1120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 1220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * See the License for the specific language governing permissions and 1420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * limitations under the License. 1520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber */ 1620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 1720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#include <arpa/inet.h> 1820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 1920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#include <media/stagefright/Utils.h> 2020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 2120111aa043c5f404472bc63b90bc5aad906b1101Andreas Hubernamespace android { 2220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 2320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberuint16_t U16_AT(const uint8_t *ptr) { 2420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber return ptr[0] << 8 | ptr[1]; 2520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 2620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 2720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberuint32_t U32_AT(const uint8_t *ptr) { 2820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber return ptr[0] << 24 | ptr[1] << 16 | ptr[2] << 8 | ptr[3]; 2920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 3020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 3120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberuint64_t U64_AT(const uint8_t *ptr) { 3220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber return ((uint64_t)U32_AT(ptr)) << 32 | U32_AT(ptr + 4); 3320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 3420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 35ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberuint16_t U16LE_AT(const uint8_t *ptr) { 36ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ptr[0] | (ptr[1] << 8); 37ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 38ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 39ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberuint32_t U32LE_AT(const uint8_t *ptr) { 40ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ptr[3] << 24 | ptr[2] << 16 | ptr[1] << 8 | ptr[0]; 41ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 42ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 43ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huberuint64_t U64LE_AT(const uint8_t *ptr) { 44ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber return ((uint64_t)U32LE_AT(ptr + 4)) << 32 | U32LE_AT(ptr); 45ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber} 46ee7ff20e69498ebd53dd9717a0f984188341a75eAndreas Huber 4720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber// XXX warning: these won't work on big-endian host. 4820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberuint64_t ntoh64(uint64_t x) { 4920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber return ((uint64_t)ntohl(x & 0xffffffff) << 32) | ntohl(x >> 32); 5020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 5120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 5220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberuint64_t hton64(uint64_t x) { 5320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber return ((uint64_t)htonl(x & 0xffffffff) << 32) | htonl(x >> 32); 5420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 5520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 5620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} // namespace android 5720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 58