| /* ------------------------------------------------------------------ |
| * 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_arm.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_ARM |
| #define PV_MP3DEC_FXD_OP_ARM |
| |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| #include "pvmp3_audio_type_defs.h" |
| |
| |
| #if (defined(PV_ARM_V5)||defined(PV_ARM_V4)) |
| |
| |
| __inline Int32 fxp_mul32_Q30(const Int32 L_var1, const Int32 L_var2) |
| { |
| |
| Int32 result64_hi; |
| Int32 result64_lo; |
| __asm |
| { |
| smull result64_lo, result64_hi, L_var2, L_var1 |
| mov result64_lo, result64_lo, lsr #30 |
| add result64_hi, result64_lo, result64_hi, asl #2 |
| } |
| return (result64_hi); |
| } |
| |
| __inline Int32 fxp_mac32_Q30(const Int32 L_var1, const Int32 L_var2, Int32 L_add) |
| { |
| Int32 result64_hi; |
| Int32 result64_lo; |
| __asm |
| { |
| smull result64_lo, result64_hi, L_var2, L_var1 |
| add L_add, L_add, result64_hi, asl #2 |
| add L_add, L_add, result64_lo, lsr #30 |
| } |
| return (L_add); |
| } |
| |
| |
| |
| #define Qfmt_31(a) (Int32)(a*0x7FFFFFFF + (a>=0?0.5F:-0.5F)) |
| |
| |
| |
| __inline Int32 fxp_mul32_Q32(Int32 L_var1, const Int32 L_var2) |
| { |
| Int32 result64_hi; |
| __asm |
| { |
| smull L_var1, result64_hi, L_var2, L_var1 |
| } |
| return (result64_hi); |
| } |
| |
| __inline Int32 fxp_mul32_Q28(const Int32 L_var1, const Int32 L_var2) |
| { |
| |
| Int32 result64_hi; |
| Int32 result64_lo; |
| __asm |
| { |
| smull result64_lo, result64_hi, L_var2, L_var1 |
| mov result64_lo, result64_lo, lsr #28 |
| add result64_hi, result64_lo, result64_hi, asl #4 |
| } |
| return (result64_hi); |
| } |
| |
| |
| __inline Int32 fxp_mul32_Q27(const Int32 L_var1, const Int32 L_var2) |
| { |
| |
| Int32 result64_hi; |
| Int32 result64_lo; |
| __asm |
| { |
| smull result64_lo, result64_hi, L_var2, L_var1 |
| mov result64_lo, result64_lo, lsr #27 |
| add result64_hi, result64_lo, result64_hi, asl #5 |
| } |
| return (result64_hi); |
| } |
| |
| |
| __inline Int32 fxp_mul32_Q26(Int32 L_var1, Int32 L_var2) |
| { |
| |
| Int32 result64_hi; |
| Int32 result64_lo; |
| __asm |
| { |
| smull result64_lo, result64_hi, L_var2, L_var1 |
| mov result64_lo, result64_lo, lsr #26 |
| add result64_hi, result64_lo, result64_hi, asl #6 |
| } |
| return (result64_hi); |
| } |
| |
| |
| |
| __inline Int32 fxp_mac32_Q32(Int32 L_add, Int32 L_var1, const Int32 L_var2) |
| { |
| __asm |
| { |
| smlal L_var1, L_add, L_var2, L_var1 |
| } |
| return L_add; |
| } |
| |
| |
| __inline Int32 fxp_msb32_Q32(Int32 L_sub, Int32 L_var1, Int32 L_var2) |
| { |
| |
| __asm |
| { |
| smull L_var2, L_var1, L_var2, L_var1 |
| sub L_sub, L_sub, L_var1 |
| } |
| return L_sub; |
| } |
| |
| |
| __inline Int32 fxp_mul32_Q29(const Int32 L_var1, const Int32 L_var2) |
| { |
| Int32 result64_hi; |
| Int32 result64_lo; |
| __asm |
| { |
| smull result64_lo, result64_hi, L_var2, L_var1 |
| mov result64_lo, result64_lo, lsr #29 |
| add result64_hi, result64_lo, result64_hi, asl #3 |
| } |
| return (result64_hi); |
| } |
| |
| |
| __inline int32 pv_abs(int32 a) |
| { |
| Int32 b; |
| /* |
| b = a - (a<0); |
| a = b ^ sign(b) |
| */ |
| __asm |
| { |
| sub b, a, a, lsr #31 |
| eor a, b, b, asr #31 |
| } |
| return (a); |
| } |
| |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| |
| #endif /* PV_MP3DEC_FXD_OP_ARM */ |
| |