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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 
     37 
     38 #ifndef _IH264_PLATFORM_MACROS_H_
     39 #define _IH264_PLATFORM_MACROS_H_
     40 
     41 #define CLIP_U8(x) CLIP3(0, 255, (x))
     42 #define CLIP_S8(x) CLIP3(-128, 127, (x))
     43 
     44 #define CLIP_U10(x) CLIP3(0, 1023, (x))
     45 #define CLIP_S10(x) CLIP3(-512, 511, (x))
     46 
     47 #define CLIP_U12(x) CLIP3(0, 4095, (x))
     48 #define CLIP_S12(x) CLIP3(-2048, 2047, (x))
     49 
     50 #define CLIP_U16(x) CLIP3(0, 65535, (x))
     51 #define CLIP_S16(x) CLIP3(-32768, 32767, (x))
     52 
     53 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
     54 
     55 #define SHL(x,y) (((y) < 32) ? ((x) << (y)) : 0)
     56 #define SHR(x,y) (((y) < 32) ? ((x) >> (y)) : 0)
     57 
     58 #define SHR_NEG(val,shift)  ((shift>0)?(val>>shift):(val<<(-shift)))
     59 #define SHL_NEG(val,shift)  ((shift<0)?(val>>(-shift)):(val<<shift))
     60 
     61 
     62 #define ITT_BIG_ENDIAN(x)       ((x << 24))                |   \
     63                             ((x & 0x0000ff00) << 8)    |   \
     64                             ((x & 0x00ff0000) >> 8)    |   \
     65                             ((UWORD32)x >> 24);
     66 
     67 
     68 #define NOP(nop_cnt)    {UWORD32 nop_i; for (nop_i = 0; nop_i < nop_cnt; nop_i++);}
     69 
     70 #define PLD(a)
     71 
     72 static __inline UWORD32 CLZ(UWORD32 u4_word)
     73 {
     74     if(u4_word)
     75     return(__builtin_clz(u4_word));
     76     else
     77         return 32;
     78 }
     79 
     80 static __inline UWORD32 CTZ(UWORD32 u4_word)
     81 {
     82     if(0 == u4_word)
     83         return 31;
     84     else
     85     {
     86         unsigned int index;
     87         index = __builtin_ctz(u4_word);
     88         return (UWORD32)index;
     89     }
     90 }
     91 
     92 #define DATA_SYNC()
     93 
     94 #define INLINE
     95 
     96 #define PREFETCH(ptr, type)
     97 
     98 #define MEM_ALIGN8 __attribute__ ((aligned (8)))
     99 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
    100 #define MEM_ALIGN32 __attribute__ ((aligned (32)))
    101 
    102 #endif /* _IH264_PLATFORM_MACROS_H_ */
    103