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      1 /******************************************************************************
      2  *
      3  * Copyright (C) 2015 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at:
      8  *
      9  * http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  *
     17  *****************************************************************************
     18  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
     19 */
     20 /**
     21 *******************************************************************************
     22 * @file
     23 *  ih264_platform_macros.h
     24 *
     25 * @brief
     26 *  Platform specific Macro definitions used in the codec
     27 *
     28 * @author
     29 *  Ittiam
     30 *
     31 * @remarks
     32 *  None
     33 *
     34 *******************************************************************************
     35 */
     36 #ifndef _IH264_PLATFORM_MACROS_H_
     37 #define _IH264_PLATFORM_MACROS_H_
     38 
     39 #ifndef  ARMV8
     40 
     41 static __inline WORD32 CLIP_U8(WORD32 x)
     42 {
     43     asm("usat %0, #8, %1" : "=r"(x) : "r"(x));
     44     return x;
     45 }
     46 
     47 static __inline WORD32 CLIP_S8(WORD32 x)
     48 {
     49     asm("ssat %0, #8, %1" : "=r"(x) : "r"(x));
     50     return x;
     51 }
     52 
     53 static __inline WORD32 CLIP_U10(WORD32 x)
     54 {
     55     asm("usat %0, #10, %1" : "=r"(x) : "r"(x));
     56     return x;
     57 }
     58 
     59 static __inline WORD32 CLIP_S10(WORD32 x)
     60 {
     61     asm("ssat %0, #10, %1" : "=r"(x) : "r"(x));
     62     return x;
     63 }
     64 
     65 static __inline WORD32 CLIP_U12(WORD32 x)
     66 {
     67     asm("usat %0, #12, %1" : "=r"(x) : "r"(x));
     68     return x;
     69 }
     70 
     71 static __inline WORD32 CLIP_S12(WORD32 x)
     72 {
     73     asm("ssat %0, #12, %1" : "=r"(x) : "r"(x));
     74     return x;
     75 }
     76 
     77 static __inline WORD32 CLIP_U16(WORD32 x)
     78 {
     79     asm("usat %0, #16, %1" : "=r"(x) : "r"(x));
     80     return x;
     81 }
     82 static __inline WORD32 CLIP_S16(WORD32 x)
     83 {
     84     asm("ssat %0, #16, %1" : "=r"(x) : "r"(x));
     85     return x;
     86 }
     87 
     88 
     89 static __inline UWORD32 ITT_BIG_ENDIAN(UWORD32 x)
     90 {
     91     asm("rev %0, %1" : "=r"(x) : "r"(x));
     92     return x;
     93 }
     94 #define NOP(nop_cnt)    {UWORD32 nop_i; for (nop_i = 0; nop_i < nop_cnt; nop_i++) asm("nop");}
     95 
     96 #else
     97 
     98 #define CLIP_U8(x) CLIP3(0, 255, (x))
     99 #define CLIP_S8(x) CLIP3(-128, 127, (x))
    100 
    101 #define CLIP_U10(x) CLIP3(0, 1023, (x))
    102 #define CLIP_S10(x) CLIP3(-512, 511, (x))
    103 
    104 #define CLIP_U12(x) CLIP3(0, 4095, (x))
    105 #define CLIP_S12(x) CLIP3(-2048, 2047, (x))
    106 
    107 #define CLIP_U16(x) CLIP3(0, 65535, (x))
    108 #define CLIP_S16(x) CLIP3(-32768, 32767, (x))
    109 
    110 #define ITT_BIG_ENDIAN(x)       __asm__("rev %0, %1" : "=r"(x) : "r"(x));
    111 
    112 #define NOP(nop_cnt)                                \
    113 {                                                   \
    114     UWORD32 nop_i;                                  \
    115     for (nop_i = 0; nop_i < nop_cnt; nop_i++)       \
    116         __asm__ __volatile__("mov x0, x0");         \
    117 }
    118 
    119 #endif
    120 
    121 #define DATA_SYNC() __sync_synchronize()
    122 
    123 #define SHL(x,y) (((y) < 32) ? ((x) << (y)) : 0)
    124 #define SHR(x,y) (((y) < 32) ? ((x) >> (y)) : 0)
    125 
    126 #define SHR_NEG(val,shift)  ((shift>0)?(val>>shift):(val<<(-shift)))
    127 #define SHL_NEG(val,shift)  ((shift<0)?(val>>(-shift)):(val<<shift))
    128 
    129 #define INLINE inline
    130 
    131 static INLINE UWORD32 CLZ(UWORD32 u4_word)
    132 {
    133     if(u4_word)
    134         return (__builtin_clz(u4_word));
    135     else
    136         return 32;
    137 }
    138 static INLINE UWORD32 CTZ(UWORD32 u4_word)
    139 {
    140     if(0 == u4_word)
    141         return 31;
    142     else
    143     {
    144         unsigned int index;
    145         index = __builtin_ctz(u4_word);
    146         return (UWORD32)index;
    147     }
    148 }
    149 
    150 #define MEM_ALIGN8 __attribute__ ((aligned (8)))
    151 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
    152 #define MEM_ALIGN32 __attribute__ ((aligned (32)))
    153 
    154 #endif /* _IH264_PLATFORM_MACROS_H_ */
    155