diff options
Diffstat (limited to 'media/libstagefright/codecs/mp3dec/src/pv_mp3dec_fxd_op_arm.h')
| -rw-r--r-- | media/libstagefright/codecs/mp3dec/src/pv_mp3dec_fxd_op_arm.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/mp3dec/src/pv_mp3dec_fxd_op_arm.h b/media/libstagefright/codecs/mp3dec/src/pv_mp3dec_fxd_op_arm.h new file mode 100644 index 0000000..76a8229 --- /dev/null +++ b/media/libstagefright/codecs/mp3dec/src/pv_mp3dec_fxd_op_arm.h @@ -0,0 +1,203 @@ +/* ------------------------------------------------------------------ + * 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 */ + |