sbc_dct.h

/******************************************************************************
 *
 * Copyright (C) 1999-2012 Broadcom Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ******************************************************************************/

/******************************************************************************
 *
 * Definitions for the fast DCT.
 *
 ******************************************************************************/

#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