| /* ------------------------------------------------------------------ |
| * Copyright (C) 1998-2009 PacketVideo |
| * |
| * 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. |
| * ------------------------------------------------------------------- |
| */ |
| /* |
| ------------------------------------------------------------------------------ |
| PacketVideo Corp. |
| MP3 Decoder Library |
| |
| Pathname: ./cpp/include/pv_mp3dec_fxd_op_msc_evc.h |
| |
| Date: 08/20/2007 |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Description: |
| ------------------------------------------------------------------------------ |
| INCLUDE DESCRIPTION |
| |
| This file select the associated fixed point functions with the OS/ARCH. |
| |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| #ifndef PV_MP3DEC_FXD_OP_MSC_EVC_H |
| #define PV_MP3DEC_FXD_OP_MSC_EVC_H |
| |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| #include "pvmp3_audio_type_defs.h" |
| |
| |
| #if (defined(PV_ARM_MSC_EVC_V5)||defined(PV_ARM_MSC_EVC_V4)) |
| #include "armintr.h" |
| #include "cmnintrin.h" |
| |
| |
| __inline int32 fxp_mul32_Q30(const int32 a, const int32 b) |
| { |
| return (int32)(((int64)(a) * b) >> 30); |
| } |
| |
| |
| __inline int32 fxp_mac32_Q30(const int32 a, const int32 b, int32 L_add) |
| { |
| return (L_add + (int32)(((int64)(a) * b) >> 30)); |
| } |
| |
| |
| #define Qfmt_31(a) (int32)(a*0x7FFFFFFF + (a>=0?0.5F:-0.5F)) |
| |
| #define Qfmt15(x) (Int16)(x*((int32)1<<15) + (x>=0?0.5F:-0.5F)) |
| |
| #define fxp_mul32_Q32( a, b) _MulHigh( b, a) |
| |
| |
| |
| __inline int32 fxp_mul32_Q28(const int32 a, const int32 b) |
| { |
| return (int32)(((int64)(a) * b) >> 28); |
| } |
| |
| |
| __inline int32 fxp_mul32_Q27(const int32 a, const int32 b) |
| { |
| return (int32)(((int64)(a) * b) >> 27); |
| } |
| |
| |
| |
| __inline int32 fxp_mul32_Q26(const int32 a, const int32 b) |
| { |
| return (int32)(((int64)(a) * b) >> 26); |
| } |
| |
| |
| __inline int32 fxp_mac32_Q32(int32 L_add, const int32 a, const int32 b) |
| { |
| return (L_add + _MulHigh(b, a)); |
| } |
| |
| |
| __inline int32 fxp_msb32_Q32(int32 L_sub, const int32 a, const int32 b) |
| { |
| return (L_sub - _MulHigh(b, a)); |
| } |
| |
| |
| |
| __inline int32 fxp_mul32_Q29(const int32 a, const int32 b) |
| { |
| return (int32)(((int64)(a) * b) >> 29); |
| } |
| |
| |
| |
| __inline int32 pv_abs(int32 a) |
| { |
| int32 b = (a < 0) ? -a : a; |
| return b; |
| } |
| |
| |
| |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| |
| #endif /* PV_MP3DEC_FXD_OP_MSC_EVC_H */ |
| |