1 /****************************************************************************** 2 * 3 * Copyright 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
