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