kopia lustrzana https://github.com/gopro/gpr
85 wiersze
1.9 KiB
C
Executable File
85 wiersze
1.9 KiB
C
Executable File
/*! @file gpr_macros.h
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*
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* @brief Definitions of useful inline functions that are used everywhere in code.
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*
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* @version 1.0.0
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*
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* (C) Copyright 2018 GoPro Inc (http://gopro.com/).
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*
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* Licensed under either:
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* - Apache License, Version 2.0, http://www.apache.org/licenses/LICENSE-2.0
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* - MIT license, http://opensource.org/licenses/MIT
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* at your option.
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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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#ifndef GPR_MACROS_H
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#define GPR_MACROS_H
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#ifndef neg
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#define neg(x) (-(x))
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#endif
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#define DivideByShift(x, s) ((x) >> (s))
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STATIC_INLINE uint16_t clamp_uint(int32_t value, uint32_t precision)
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{
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const int32_t limit = ((1 << precision) - 1);
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if (value < 0)
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value = 0;
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else if (value > limit)
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value = limit;
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return (uint16_t)value;
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}
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STATIC_INLINE uint16_t clamp_uint16(int32_t value)
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{
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return (uint16_t)clamp_uint( value, 16);
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}
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STATIC_INLINE uint16_t clamp_uint14(int32_t value)
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{
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return (uint16_t)clamp_uint( value, 14);
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}
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STATIC_INLINE uint16_t clamp_uint12(int32_t value)
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{
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return (uint16_t)clamp_uint( value, 12);
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}
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STATIC_INLINE uint8_t clamp_uint8(int32_t value)
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{
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return (uint8_t)clamp_uint( value, 8);
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}
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STATIC_INLINE int minimum(int a, int b)
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{
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return (a < b) ? a : b;
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}
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STATIC_INLINE int maximum(int a, int b)
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{
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return (a < b) ? b : a;
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}
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STATIC_INLINE int absolute(int a)
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{
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return (a < 0) ? -a : a;
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}
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STATIC_INLINE uint32_t Swap32(uint32_t value)
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{
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value = (value & 0x0000FFFF) << 16 | (value & 0xFFFF0000) >> 16;
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value = (value & 0x00FF00FF) << 8 | (value & 0xFF00FF00) >> 8;
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return value;
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}
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#endif // GPR_MACROS_H
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