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/******************************************************************************
**
** File Name: $RCSfile: sbc_dct.h,v $
**
** Description: Definitions for the fast DCT.
**
** Copyright (c) 1999-2008, Broadcom Corp., All Rights Reserved.
** Widcomm Bluetooth Core. Proprietary and confidential.
**
******************************************************************************/
#ifndef SBC_DCT_H
#define SBC_DCT_H
#if (SBC_ARM_ASM_OPT==TRUE)
#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1, s32OutLow) \
{ \
__asm \
{ \
MUL s32OutLow,(SINT32)s16In2, (s32In1>>15) \
} \
}
#else
#if (SBC_DSP_OPT==TRUE)
#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) s32OutLow = SBC_Multiply_32_16_Simplified((SINT32)s16In2,s32In1);
#else
#if (SBC_IPAQ_OPT==TRUE)
/*#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) s32OutLow=(SINT32)((SINT32)(s16In2)*(SINT32)(s32In1>>15)); */
#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) s32OutLow=(SINT32)(((SINT64)s16In2*(SINT64)s32In1)>>15);
#if (SBC_IS_64_MULT_IN_IDCT == TRUE)
#define SBC_MULT_32_32(s32In2, s32In1, s32OutLow) \
{ \
s64Temp = ((SINT64) s32In2) * ((SINT64) s32In1)>>31; \
s32OutLow = (SINT32) s64Temp; \
}
#endif
#else
#define SBC_MULT_32_16_SIMPLIFIED(s16In2, s32In1 , s32OutLow) \
{ \
s32In1Temp = s32In1; \
s32In2Temp = (SINT32)s16In2; \
\
/* Multiply one +ve and the other -ve number */ \
if (s32In1Temp < 0) \
{ \
s32In1Temp ^= 0xFFFFFFFF; \
s32In1Temp++; \
s32OutLow = (s32In2Temp * (s32In1Temp >> 16)); \
s32OutLow += (( s32In2Temp * (s32In1Temp & 0xFFFF)) >> 16); \
s32OutLow ^= 0xFFFFFFFF; \
s32OutLow++; \
} \
else \
{ \
s32OutLow = (s32In2Temp * (s32In1Temp >> 16)); \
s32OutLow += (( s32In2Temp * (s32In1Temp & 0xFFFF)) >> 16); \
} \
s32OutLow <<= 1; \
}
#if (SBC_IS_64_MULT_IN_IDCT == TRUE)
#define SBC_MULT_64(s32In1, s32In2, s32OutLow, s32OutHi) \
{\
s32OutLow=(SINT32)(((SINT64)s32In1*(SINT64)s32In2)& 0x00000000FFFFFFFF);\
s32OutHi=(SINT32)(((SINT64)s32In1*(SINT64)s32In2)>>32);\
}
#define SBC_MULT_32_32(s32In2, s32In1, s32OutLow) \
{ \
s32HiTemp = 0; \
SBC_MULT_64(s32In2,s32In1 , s32OutLow, s32HiTemp); \
s32OutLow = (((s32OutLow>>15)&0x1FFFF) | (s32HiTemp << 17)); \
}
#endif
#endif
#endif
#endif
#endif
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