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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include "utils.h"
/** Write a 4-byte value to f in little-endian order. */
void Write4(int value, FILE* f) {
fputc(value & 0xff, f);
fputc((value >> 8) & 0xff, f);
fputc((value >> 16) & 0xff, f);
fputc((value >> 24) & 0xff, f);
}
/** Write an 8-byte value to f in little-endian order. */
void Write8(int64_t value, FILE* f) {
fputc(value & 0xff, f);
fputc((value >> 8) & 0xff, f);
fputc((value >> 16) & 0xff, f);
fputc((value >> 24) & 0xff, f);
fputc((value >> 32) & 0xff, f);
fputc((value >> 40) & 0xff, f);
fputc((value >> 48) & 0xff, f);
fputc((value >> 56) & 0xff, f);
}
int Read2(void* pv) {
unsigned char* p = reinterpret_cast<unsigned char*>(pv);
return (int)(((unsigned int)p[1] << 8) |
(unsigned int)p[0]);
}
int Read4(void* pv) {
unsigned char* p = reinterpret_cast<unsigned char*>(pv);
return (int)(((unsigned int)p[3] << 24) |
((unsigned int)p[2] << 16) |
((unsigned int)p[1] << 8) |
(unsigned int)p[0]);
}
int64_t Read8(void* pv) {
unsigned char* p = reinterpret_cast<unsigned char*>(pv);
return (int64_t)(((uint64_t)p[7] << 56) |
((uint64_t)p[6] << 48) |
((uint64_t)p[5] << 40) |
((uint64_t)p[4] << 32) |
((uint64_t)p[3] << 24) |
((uint64_t)p[2] << 16) |
((uint64_t)p[1] << 8) |
(uint64_t)p[0]);
}
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