79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2011 Danny Robson <danny@nerdcruft.net>
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*/
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#include "fourcc.hpp"
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#include <ostream>
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using util::fourcc;
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static_assert (sizeof(fourcc) == 4, "fourcc must be a 4 byte POD");
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///////////////////////////////////////////////////////////////////////////////
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fourcc
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fourcc::from_chars (uint8_t a, uint8_t b, uint8_t c, uint8_t d) {
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fourcc lhs;
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lhs.data[0] = a;
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lhs.data[1] = b;
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lhs.data[2] = c;
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lhs.data[3] = d;
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return lhs;
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}
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//-----------------------------------------------------------------------------
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fourcc
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fourcc::from_string (const char data[4]) {
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fourcc lhs;
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lhs.data[0] = static_cast<uint8_t> (data[0]);
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lhs.data[1] = static_cast<uint8_t> (data[1]);
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lhs.data[2] = static_cast<uint8_t> (data[2]);
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lhs.data[3] = static_cast<uint8_t> (data[3]);
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return lhs;
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}
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///////////////////////////////////////////////////////////////////////////////
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bool
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fourcc::operator== (const char rhs[4]) const {
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return data[0] == rhs[0] &&
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data[1] == rhs[1] &&
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data[2] == rhs[2] &&
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data[3] == rhs[3];
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}
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///////////////////////////////////////////////////////////////////////////////
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fourcc::operator uint32_t (void) const {
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return static_cast<uint32_t> (data[0] << 24U |
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data[1] << 16U |
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data[2] << 8U |
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data[3]);
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}
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///////////////////////////////////////////////////////////////////////////////
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std::ostream&
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util::operator<< (std::ostream &os, fourcc f) {
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os << f.data[0] << f.data[1] << f.data[2] << f.data[3];
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return os;
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}
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