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 #if (SBC_ARM_ASM_OPT==TRUE) 29 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \ 30 { \ 31 __asm \ 32 { \ 33 MUL s32OutLow,(SINT32)s16In2, (s32In1>>15) \ 34 } \ 35 } 36 #else 37 #if (SBC_DSP_OPT==TRUE) 38 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) s32OutLow = SBC_Multiply_32_16_Simplified((SINT32)s16In2,s32In1); 39 #else 40 #if (SBC_IPAQ_OPT==TRUE) 41 /*#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) s32OutLow=(SINT32)((SINT32)(s16In2)*(SINT32)(s32In1>>15)); */ 42 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) s32OutLow=(SINT32)(((SINT64)s16In2*(SINT64)s32In1)>>15); 43 #if (SBC_IS_64_MULT_IN_IDCT == TRUE) 44 #define SBC_MULT_32_32(s32In2, s32In1, s32OutLow) \ 45 { \ 46 s64Temp = ((SINT64) s32In2) * ((SINT64) s32In1)>>31; \ 47 s32OutLow = (SINT32) s64Temp; \ 48 } 49 #endif 50 #else 51 #define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) \ 52 { \ 53 s32In1Temp = s32In1; \ 54 s32In2Temp = (SINT32)s16In2; \ 55 \ 56 /* Multiply one +ve and the other -ve number */ \ 57 if (s32In1Temp < 0) \ 58 { \ 59 s32In1Temp ^= 0xFFFFFFFF; \ 60 s32In1Temp++; \ 61 s32OutLow = (s32In2Temp * (s32In1Temp >> 16)); \ 62 s32OutLow += (( s32In2Temp * (s32In1Temp & 0xFFFF)) >> 16); \ 63 s32OutLow ^= 0xFFFFFFFF; \ 64 s32OutLow++; \ 65 } \ 66 else \ 67 { \ 68 s32OutLow = (s32In2Temp * (s32In1Temp >> 16)); \ 69 s32OutLow += (( s32In2Temp * (s32In1Temp & 0xFFFF)) >> 16); \ 70 } \ 71 s32OutLow <<= 1; \ 72 } 73 #if (SBC_IS_64_MULT_IN_IDCT == TRUE) 74 #define SBC_MULT_64(s32In1, s32In2, s32OutLow, s32OutHi) \ 75 {\ 76 s32OutLow=(SINT32)(((SINT64)s32In1*(SINT64)s32In2)& 0x00000000FFFFFFFF);\ 77 s32OutHi=(SINT32)(((SINT64)s32In1*(SINT64)s32In2)>>32);\ 78 } 79 #define SBC_MULT_32_32(s32In2, s32In1, s32OutLow) \ 80 { \ 81 s32HiTemp = 0; \ 82 SBC_MULT_64(s32In2,s32In1 , s32OutLow, s32HiTemp); \ 83 s32OutLow = (((s32OutLow>>15)&0x1FFFF) | (s32HiTemp << 17)); \ 84 } 85 #endif 86 87 #endif 88 #endif 89 #endif 90 91 #endif 92
