1 /******************************************************************************
2  *
3  *  Copyright (C) 1999-2012 Broadcom Corporation
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  *
21  *  Definitions for the fast DCT.
22  *
23  ******************************************************************************/
24 
25 #ifndef SBC_DCT_H
26 #define SBC_DCT_H
27 
28 #include "sbc_enc_func_declare.h"
29 
30 #if (SBC_ARM_ASM_OPT == TRUE)
31 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \
32   {                                                          \
33     __asm {																				\
34     MUL s32OutLow,(int32_t)s16In2, (s32In1>>15) } \
35   }
36 #else
37 #if (SBC_DSP_OPT == TRUE)
38 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \
39   s32OutLow = SBC_Multiply_32_16_Simplified((int32_t)s16In2, s32In1);
40 #else
41 #if (SBC_IPAQ_OPT == TRUE)
42 /*
43 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow)
44 s32OutLow=(int32_t)((int32_t)(s16In2)*(int32_t)(s32In1>>15));
45 */
46 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \
47   s32OutLow = (int32_t)(((int64_t)(s16In2) * (int64_t)(s32In1)) >> 15);
48 #if (SBC_IS_64_MULT_IN_IDCT == TRUE)
49 #define SBC_MULT_32_32(s32In2, s32In1, s32OutLow)          \
50   {                                                        \
51     s64Temp = ((int64_t)s32In2) * ((int64_t)s32In1) >> 31; \
52     s32OutLow = (int32_t)s64Temp;                          \
53   }
54 #endif
55 #else
56 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow)     \
57   {                                                              \
58     s32In1Temp = s32In1;                                         \
59     s32In2Temp = (int32_t)s16In2;                                \
60                                                                  \
61     /* Multiply one +ve and the other -ve number */              \
62     if (s32In1Temp < 0) {                                        \
63       s32In1Temp ^= 0xFFFFFFFF;                                  \
64       s32In1Temp++;                                              \
65       s32OutLow = (s32In2Temp * (s32In1Temp >> 16));             \
66       s32OutLow += ((s32In2Temp * (s32In1Temp & 0xFFFF)) >> 16); \
67       s32OutLow ^= 0xFFFFFFFF;                                   \
68       s32OutLow++;                                               \
69     } else {                                                     \
70       s32OutLow = (s32In2Temp * (s32In1Temp >> 16));             \
71       s32OutLow += ((s32In2Temp * (s32In1Temp & 0xFFFF)) >> 16); \
72     }                                                            \
73     s32OutLow <<= 1;                                             \
74   }
75 #if (SBC_IS_64_MULT_IN_IDCT == TRUE)
76 #define SBC_MULT_64(s32In1, s32In2, s32OutLow, s32OutHi)                     \
77   {                                                                          \
78     s32OutLow =                                                              \
79         (int32_t)(((int64_t)s32In1 * (int64_t)s32In2) & 0x00000000FFFFFFFF); \
80     s32OutHi = (int32_t)(((int64_t)s32In1 * (int64_t)s32In2) >> 32);         \
81   }
82 #define SBC_MULT_32_32(s32In2, s32In1, s32OutLow)                    \
83   {                                                                  \
84     s32HiTemp = 0;                                                   \
85     SBC_MULT_64(s32In2, s32In1, s32OutLow, s32HiTemp);               \
86     s32OutLow = (((s32OutLow >> 15) & 0x1FFFF) | (s32HiTemp << 17)); \
87   }
88 #endif
89 
90 #endif
91 #endif
92 #endif
93 
94 #endif
95