Home | History | Annotate | Download | only in mips 
      1 /******************************************************************************
      2 *
      3 * Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
      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 /**
     19 *******************************************************************************
     20 * @file
     21 *  ihevc_platform_macros.h
     22 *
     23 * @brief
     24 *  Platform specific Macro definitions used in the codec
     25 *
     26 * @author
     27 *  Ittiam
     28 *
     29 * @remarks
     30 *  None
     31 *
     32 *******************************************************************************
     33 */
     34 #ifndef _IHEVC_PLATFORM_MACROS_H_
     35 #define _IHEVC_PLATFORM_MACROS_H_
     36 
     37 
     38 #define CLIP_U8(x) CLIP3((x), 0,     255)
     39 #define CLIP_S8(x) CLIP3((x), -128,  127)
     40 
     41 #define CLIP_U10(x) CLIP3((x), 0,     1023);
     42 #define CLIP_S10(x) CLIP3((x), -512,  511);
     43 
     44 #define CLIP_U12(x) CLIP3((x), 0,     4095);
     45 #define CLIP_S12(x) CLIP3((x), -2048,  2047);
     46 
     47 #define CLIP_U16(x) CLIP3((x), 0,        65535)
     48 #define CLIP_S16(x) CLIP3((x), -32768,   32767)
     49 
     50 #define ITT_BIG_ENDIAN(x)   ((x << 24))                |   \
     51                             ((x & 0x0000ff00) << 8)    |   \
     52                             ((x & 0x00ff0000) >> 8)    |   \
     53                             ((UWORD32)x >> 24);
     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 static inline UWORD32 CLZ(UWORD32 u4_word)
     62 {
     63     if(u4_word)
     64         return (__builtin_clz(u4_word));
     65     else
     66         return 32;
     67 }
     68 
     69 static inline UWORD32 CLZNZ(UWORD32 u4_word)
     70 {
     71    return (__builtin_clz(u4_word));
     72 }
     73 
     74 static inline UWORD32 CTZ(UWORD32 u4_word)
     75 {
     76     if(0 == u4_word)
     77         return 31;
     78     else
     79     {
     80         unsigned int index;
     81         index = __builtin_ctz(u4_word);
     82         return (UWORD32)index;
     83     }
     84 }
     85 
     86 #define POPCNT_U32(x)       __builtin_popcount(x)
     87 
     88 #define NOP(nop_cnt)    {UWORD32 nop_i; for (nop_i = 0; nop_i < nop_cnt; nop_i++);}
     89 
     90 #define INLINE
     91 
     92 #define MEM_ALIGN8 __attribute__ ((aligned (8)))
     93 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
     94 #define MEM_ALIGN32 __attribute__ ((aligned (32)))
     95 
     96 #define DATA_SYNC()  __sync_synchronize()
     97 
     98 #endif /* _IHEVC_PLATFORM_MACROS_H_ */
     99