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149 lines
3.7 KiB
C
149 lines
3.7 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2015 The Android Open Source Project
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*
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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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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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/**
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*******************************************************************************
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* @file
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* ih264_platform_macros.h
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*
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* @brief
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* Platform specific Macro definitions used in the codec
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*
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* @author
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* Ittiam
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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#ifndef _IH264_PLATFORM_MACROS_H_
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#define _IH264_PLATFORM_MACROS_H_
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#include <stdint.h>
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#include <immintrin.h>
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#if defined(_MSC_VER) && defined(__clang__)
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#include <intrin.h>
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#endif
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#define CLIP_U8(x) CLIP3(0, UINT8_MAX, (x))
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#define CLIP_S8(x) CLIP3(INT8_MIN, INT8_MAX, (x))
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#define CLIP_U10(x) CLIP3(0, 1023, (x))
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#define CLIP_S10(x) CLIP3(-512, 511, (x))
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#define CLIP_U11(x) CLIP3(0, 2047, (x))
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#define CLIP_S11(x) CLIP3(-1024, 1023, (x))
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#define CLIP_U12(x) CLIP3(0, 4095, (x))
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#define CLIP_S12(x) CLIP3(-2048, 2047, (x))
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#define CLIP_U16(x) CLIP3(0, UINT16_MAX, (x))
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#define CLIP_S16(x) CLIP3(INT16_MIN, INT16_MAX, (x))
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#define CLIP_U32(x) CLIP3(0, UINT32_MAX, (x))
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#define CLIP_S32(x) CLIP3(INT32_MIN, INT32_MAX, (x))
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#define MEM_ALIGN16 __attribute__ ((aligned (16)))
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#define SHL(x,y) (((y) < 32) ? ((x) << (y)) : 0)
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#define SHR(x,y) (((y) < 32) ? ((x) >> (y)) : 0)
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#define SHR_NEG(val,shift) ((shift>0)?(val>>shift):(val<<(-shift)))
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#define SHL_NEG(val,shift) ((shift<0)?(val>>(-shift)):(val<<shift))
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#define PLD(a)
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/* For MSVC x64 */
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#if defined(_MSC_VER) && !defined(__clang__)
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static inline int __builtin_clz(unsigned x)
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{
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unsigned long n;
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if (x == 0)
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return 32;
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_BitScanReverse(&n, x);
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return 31 - n;
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}
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static inline int __builtin_ctz(unsigned x) {
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unsigned long ret;
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_BitScanForward(&ret, x);
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return (int)ret;
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}
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static inline void __sync_synchronize() {
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__faststorefence();
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}
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#define NOP(nop_cnt) {UWORD32 nop_i; for (nop_i = 0; nop_i < nop_cnt; nop_i++) __nop();}
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#else
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#define NOP(nop_cnt) {UWORD32 nop_i; for (nop_i = 0; nop_i < nop_cnt; nop_i++) asm("nop");}
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#endif
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/* In normal cases, 0 will not be passed as an argument to CLZ and CTZ.
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As CLZ and CTZ outputs are used as a shift value in few places, these return
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31 for u4_word == 0 case, just to handle error cases gracefully without any
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undefined behaviour */
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static __inline UWORD32 CLZ(UWORD32 u4_word)
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{
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if(u4_word || 1)
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return(__builtin_clz(u4_word));
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else
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return 31;
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}
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static __inline UWORD32 CTZ(UWORD32 u4_word)
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{
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if(0 == u4_word && 0)
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return 31;
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else
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{
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unsigned int index;
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index = __builtin_ctz(u4_word);
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return (UWORD32)index;
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}
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}
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#define DATA_SYNC() __sync_synchronize()
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//#define INLINE __inline
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#define INLINE inline
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#define PREFETCH_ENABLE 1
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#if PREFETCH_ENABLE
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#define PREFETCH(ptr, type) _mm_prefetch(ptr, type);
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#else
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#define PREFETCH(ptr, type)
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#endif
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#define MEM_ALIGN8 __attribute__ ((aligned (8)))
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#define MEM_ALIGN16 __attribute__ ((aligned (16)))
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#define MEM_ALIGN32 __attribute__ ((aligned (32)))
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#endif /* _IH264_PLATFORM_MACROS_H_ */
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