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Add forgotten implementation for fourcc

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It was pulled from types.hpp recently.
This commit is contained in:
Danny Robson 2012-05-26 18:02:57 +10:00
parent 83343ee7a1
commit 9d27f798aa
2 changed files with 109 additions and 0 deletions
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fourcc.cpp Normal file
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/*
* This file is part of libgim.
*
* libgim is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with libgim. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2011 Danny Robson <danny@nerdcruft.net>
*/
#include "fourcc.hpp"
fourcc
fourcc::from_chars (uint8_t a, uint8_t b, uint8_t c, uint8_t d) {
fourcc lhs;
lhs.data[0] = a;
lhs.data[1] = b;
lhs.data[2] = c;
lhs.data[3] = d;
return lhs;
}
fourcc
fourcc::from_str (const char data[4]) {
fourcc lhs;
lhs.data[0] = (uint8_t)data[0];
lhs.data[1] = (uint8_t)data[1];
lhs.data[2] = (uint8_t)data[2];
lhs.data[3] = (uint8_t)data[3];
return lhs;
}
bool
fourcc::operator== (const char rhs[4]) const {
return data[0] == rhs[0] &&
data[1] == rhs[1] &&
data[2] == rhs[2] &&
data[3] == rhs[3];
}
fourcc::operator uint32_t (void) const {
return (uint32_t)(data[0] << 24U |
data[1] << 16U |
data[2] << 8U |
data[3]);
}
ostream&
operator<< (ostream &os, fourcc f) {
os << f.data[0] << f.data[1] << f.data[2] << f.data[3];
return os;
}

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fourcc.hpp Normal file
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/*
* This file is part of libgim.
*
* libgim is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with libgim. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2011 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_FOURCC_HPP
#define __UTIL_FOURCC_HPP
#include <iostream>
#include <cstdint>
struct fourcc {
uint8_t data[4];
static fourcc from_str(const char[4]);
static fourcc from_chars(uint8_t, uint8_t, uint8_t, uint8_t);
bool operator== (const char[4]) const;
operator uint32_t (void) const;
};
std::ostream& operator<< (std::ostream&, fourcc);
#endif