mirror of
https://github.com/0xFEEDC0DE64/arduino-esp32.git
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92 lines
4.6 KiB
C
92 lines
4.6 KiB
C
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/******************************************************************************
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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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#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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{ \
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MUL s32OutLow,(SINT32)s16In2, (s32In1>>15) \
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} \
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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) s32OutLow = SBC_Multiply_32_16_Simplified((SINT32)s16In2,s32In1);
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#else
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#if (SBC_IPAQ_OPT==TRUE)
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/*#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) s32OutLow=(SINT32)((SINT32)(s16In2)*(SINT32)(s32In1>>15)); */
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#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) s32OutLow=(SINT32)(((SINT64)s16In2*(SINT64)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 = ((SINT64) s32In2) * ((SINT64) s32In1)>>31; \
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s32OutLow = (SINT32) 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 = (SINT32)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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{ \
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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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} \
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else \
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{ \
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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=(SINT32)(((SINT64)s32In1*(SINT64)s32In2)& 0x00000000FFFFFFFF);\
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s32OutHi=(SINT32)(((SINT64)s32In1*(SINT64)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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