1 /* 2 * Copyright (C) 2003 - 2016 Sony Corporation 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _FIXP_LDAC_H 18 #define _FIXP_LDAC_H 19 20 /*************************************************************************************************** 21 Macro Definitions 22 ***************************************************************************************************/ 23 24 #define LDAC_MAX_32BIT ((INT32)0x7fffffffL) 25 #define LDAC_MIN_32BIT ((INT32)0x80000000L) 26 27 #define LDAC_C_BLKFLT 31 28 29 #define LDAC_Q_SETPCM 15 30 31 #define LDAC_Q_MDCT_WIN 30 32 #define LDAC_Q_MDCT_COS 31 33 #define LDAC_Q_MDCT_SIN 31 34 35 #define LDAC_Q_NORM1 15 36 #define LDAC_Q_NORM2 31 37 38 #define LDAC_Q_QUANT1 47 39 #define LDAC_Q_QUANT2 0 40 #define LDAC_Q_QUANT3 15 41 #define LDAC_Q_QUANT4 47 42 43 #define LDAC_Q_DEQUANT1 0 44 #define LDAC_Q_DEQUANT2 0 45 #define LDAC_Q_DEQUANT3 31 46 47 #define LDAC_Q_NORM (15+(LDAC_Q_NORM2-LDAC_Q_NORM1)) 48 49 /*************************************************************************************************** 50 Function Declarations 51 ***************************************************************************************************/ 52 /* func_fixp_ldac.c */ 53 DECLFUNC INT32 sftrnd_ldac(INT32, int); 54 #define lsft_ldac(x, n) ((x) << (n)) 55 #define rsft_ldac(x, n) ((x) >> (n)) 56 #define rsft_ro_ldac(x, n) (((x) + (1 << (n-1))) >> (n)) 57 58 #define lsftrnd_ldac(x, n) (INT32)((INT64)(x) << (-(n))) 59 #define rsftrnd_ldac(x, n) (INT32)(((INT64)(x) + ((INT64)1 << ((n)-1))) >> (n)) 60 #define mul_lsftrnd_ldac(x, y, n) (INT32)(((INT64)(x) * (INT64)(y)) << (-(n))) 61 #define mul_rsftrnd_ldac(x, y, n) (INT32)((((INT64)(x) * (INT64)(y)) + ((INT64)1 << ((n)-1))) >> (n)) 62 63 DECLFUNC int get_bit_length_ldac(INT32); 64 DECLFUNC INT32 get_absmax_ldac(INT32 *, int); 65 66 #endif /* _FIXP_LDAC_H */ 67 68