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Diffstat (limited to 'opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op.h')
-rw-r--r-- | opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op.h | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op.h b/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op.h new file mode 100644 index 0000000..7b9e900 --- /dev/null +++ b/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwbdecoder_basic_op.h @@ -0,0 +1,243 @@ +/* ------------------------------------------------------------------ + * 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. + * ------------------------------------------------------------------- + */ +/**************************************************************************************** +Portions of this file are derived from the following 3GPP standard: + + 3GPP TS 26.173 + ANSI-C code for the Adaptive Multi-Rate - Wideband (AMR-WB) speech codec + Available from http://www.3gpp.org + +(C) 2007, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) +Permission to distribute, modify and use this file under the standard license +terms listed above has been obtained from the copyright holder. +****************************************************************************************/ +/* +------------------------------------------------------------------------------ + + + + Pathname: ./src/pvamrwbdecoder_basic_op.h + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + +------------------------------------------------------------------------------ +*/ + + +#ifndef PVAMRWBDECODER_BASIC_OP_H +#define PVAMRWBDECODER_BASIC_OP_H + + +#include "normalize_amr_wb.h" + + +#define MAX_32 (int32)0x7fffffffL +#define MIN_32 (int32)0x80000000L + +#define MAX_16 (int16)+32767 /* 0x7fff */ +#define MIN_16 (int16)-32768 /* 0x8000 */ + + + + +/*---------------------------------------------------------------------------- + Function Name : negate_int16 + + Negate var1 with saturation, saturate in the case where input is -32768: + negate(var1) = sub(0,var1). + + Inputs : + var1 + 16 bit short signed integer (int16) whose value falls in the + range : 0x8000 <= var1 <= 0x7fff. + + Outputs : + none + + Return Value : + 16 bit short signed integer (int16) whose value falls in the + range : 0x8000 <= var_out <= 0x7fff. + ----------------------------------------------------------------------------*/ + +static inline int16 negate_int16(int16 var1) +{ + return (((var1 == MIN_16) ? MAX_16 : -var1)); +} + + +/*---------------------------------------------------------------------------- + + Function Name : shl_int16 + + Arithmetically shift the 16 bit input var1 left var2 positions.Zero fill + the var2 LSB of the result. If var2 is negative, arithmetically shift + var1 right by -var2 with sign extension. Saturate the result in case of + underflows or overflows. + + Inputs : + var1 + 16 bit short signed integer (int16) whose value falls in the + range : 0x8000 <= var1 <= 0x7fff. + + var2 + 16 bit short signed integer (int16) whose value falls in the + range : 0x8000 <= var1 <= 0x7fff. + + Return Value : + var_out + 16 bit short signed integer (int16) whose value falls in the + range : 0x8000 <= var_out <= 0x7fff. + ----------------------------------------------------------------------------*/ + +static inline int16 shl_int16(int16 var1, int16 var2) +{ + int16 var_out; + + if (var2 < 0) + { + var2 = (-var2) & (0xf); + var_out = var1 >> var2; + } + else + { + var2 &= 0xf; + var_out = var1 << var2; + if (var_out >> var2 != var1) + { + var_out = (var1 >> 15) ^ MAX_16; + } + } + return (var_out); +} + + +/*---------------------------------------------------------------------------- + + Function Name : shl_int32 + + Arithmetically shift the 32 bit input L_var1 left var2 positions. Zero + fill the var2 LSB of the result. If var2 is negative, arithmetically + shift L_var1 right by -var2 with sign extension. Saturate the result in + case of underflows or overflows. + + Inputs : + L_var1 32 bit long signed integer (int32) whose value falls in the + range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. + + var2 + 16 bit short signed integer (int16) whose value falls in the + range : 8000 <= var2 <= 7fff. + Return Value : + 32 bit long signed integer (int32) whose value falls in the + range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. + + ----------------------------------------------------------------------------*/ + +static inline int32 shl_int32(int32 L_var1, int16 var2) +{ + int32 L_var_out; + + if (var2 > 0) + { + L_var_out = L_var1 << var2; + if (L_var_out >> var2 != L_var1) + { + L_var_out = (L_var1 >> 31) ^ MAX_32; + } + } + else + { + var2 = (-var2) & (0xf); + L_var_out = L_var1 >> var2; + } + + return (L_var_out); +} + + +/*---------------------------------------------------------------------------- + + Function Name : shr_int32 + + Arithmetically shift the 32 bit input L_var1 right var2 positions with + sign extension. If var2 is negative, arithmetically shift L_var1 left + by -var2 and zero fill the -var2 LSB of the result. Saturate the result + in case of underflows or overflows. + + Inputs : + L_var1 32 bit long signed integer (int32) whose value falls in the + range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. + + var2 + 16 bit short signed integer (int16) whose value falls in the + range : 8000 <= var2 <= 7fff. + Return Value : + 32 bit long signed integer (int32) whose value falls in the + range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. + + ----------------------------------------------------------------------------*/ + +static inline int32 shr_int32(int32 L_var1, int16 var2) +{ + int32 L_var_out; + + if (var2 >= 0) + { + L_var_out = L_var1 >> (var2 & 0x1f); + } + else + { + var2 = (int16)(-var2); + var2 &= 0x1f; + L_var_out = L_var1 << var2; + if (L_var_out >> var2 != L_var1) + { + L_var_out = (L_var1 >> 31) ^ MAX_32; + } + + } + return (L_var_out); +} + + + + + + +#if defined(PV_ARM_V5) + +#include "pvamrwbdecoder_basic_op_armv5.h" + +#elif defined(PV_ARM_GCC_V5) + +#include "pvamrwbdecoder_basic_op_gcc_armv5.h" + +#else + +#ifndef C_EQUIVALENT +#define C_EQUIVALENT // default to C_EQUIVALENT +#endif + +#include "pvamrwbdecoder_basic_op_cequivalent.h" + +#endif + + +#endif /* PVAMRWBDECODER_BASIC_OP_H */ + |