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94 lines
4.0 KiB
94 lines
4.0 KiB
/****************************************************************************** |
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* |
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* Copyright (C) 1999-2012 Broadcom Corporation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at: |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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******************************************************************************/ |
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/****************************************************************************** |
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* |
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* Definitions for the fast DCT. |
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* |
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******************************************************************************/ |
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#ifndef SBC_DCT_H |
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#define SBC_DCT_H |
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#include "sbc_enc_func_declare.h" |
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#if (SBC_ARM_ASM_OPT == TRUE) |
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#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \ |
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{ \ |
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__asm { \ |
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MUL s32OutLow,(int32_t)s16In2, (s32In1>>15) } \ |
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} |
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#else |
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#if (SBC_DSP_OPT == TRUE) |
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#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \ |
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s32OutLow = SBC_Multiply_32_16_Simplified((int32_t)s16In2, s32In1); |
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#else |
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#if (SBC_IPAQ_OPT == TRUE) |
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/* |
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#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) |
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s32OutLow=(int32_t)((int32_t)(s16In2)*(int32_t)(s32In1>>15)); |
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*/ |
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#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \ |
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s32OutLow = (int32_t)(((int64_t)(s16In2) * (int64_t)(s32In1)) >> 15); |
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#if (SBC_IS_64_MULT_IN_IDCT == TRUE) |
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#define SBC_MULT_32_32(s32In2, s32In1, s32OutLow) \ |
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{ \ |
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s64Temp = ((int64_t)s32In2) * ((int64_t)s32In1) >> 31; \ |
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s32OutLow = (int32_t)s64Temp; \ |
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} |
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#endif |
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#else |
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#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \ |
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{ \ |
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s32In1Temp = s32In1; \ |
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s32In2Temp = (int32_t)s16In2; \ |
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\ |
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/* Multiply one +ve and the other -ve number */ \ |
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if (s32In1Temp < 0) { \ |
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s32In1Temp ^= 0xFFFFFFFF; \ |
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s32In1Temp++; \ |
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s32OutLow = (s32In2Temp * (s32In1Temp >> 16)); \ |
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s32OutLow += ((s32In2Temp * (s32In1Temp & 0xFFFF)) >> 16); \ |
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s32OutLow ^= 0xFFFFFFFF; \ |
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s32OutLow++; \ |
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} else { \ |
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s32OutLow = (s32In2Temp * (s32In1Temp >> 16)); \ |
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s32OutLow += ((s32In2Temp * (s32In1Temp & 0xFFFF)) >> 16); \ |
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} \ |
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s32OutLow <<= 1; \ |
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} |
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#if (SBC_IS_64_MULT_IN_IDCT == TRUE) |
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#define SBC_MULT_64(s32In1, s32In2, s32OutLow, s32OutHi) \ |
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{ \ |
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s32OutLow = \ |
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(int32_t)(((int64_t)s32In1 * (int64_t)s32In2) & 0x00000000FFFFFFFF); \ |
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s32OutHi = (int32_t)(((int64_t)s32In1 * (int64_t)s32In2) >> 32); \ |
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} |
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#define SBC_MULT_32_32(s32In2, s32In1, s32OutLow) \ |
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{ \ |
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s32HiTemp = 0; \ |
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SBC_MULT_64(s32In2, s32In1, s32OutLow, s32HiTemp); \ |
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s32OutLow = (((s32OutLow >> 15) & 0x1FFFF) | (s32HiTemp << 17)); \ |
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} |
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#endif |
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#endif |
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#endif |
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#endif |
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#endif
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