diff options
Diffstat (limited to 'opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwb_math_op.h')
| -rw-r--r-- | opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwb_math_op.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwb_math_op.h b/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwb_math_op.h new file mode 100644 index 0000000..e84ce90 --- /dev/null +++ b/opencore/codecs_v2/audio/gsm_amr/amr_wb/dec/src/pvamrwb_math_op.h @@ -0,0 +1,126 @@ +/* ------------------------------------------------------------------ + * 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/pvamrwb_math_op.h + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + +------------------------------------------------------------------------------ +*/ + +#ifndef PVAMRWB_MATH_OP_H +#define PVAMRWB_MATH_OP_H + + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ + +#include "pv_amr_wb_type_defs.h" + +/*---------------------------------------------------------------------------- +; DEFINES +----------------------------------------------------------------------------*/ + +/*---------------------------------------------------------------------------- +; MACROS +; Define module specific macros here +----------------------------------------------------------------------------*/ + +/*---------------------------------------------------------------------------- +; EXTERNAL VARIABLES REFERENCES +----------------------------------------------------------------------------*/ +#ifdef __cplusplus +extern "C" +{ +#endif + + + int32 one_ov_sqrt( /* (o) Q31 : output value (range: 0<=val<1) */ + int32 L_x /* (i) Q0 : input value (range: 0<=val<=7fffffff) */ + ); + void one_ov_sqrt_norm( + int32 * frac, /* (i/o) Q31: normalized value (1.0 < frac <= 0.5) */ + int16 * exp /* (i/o) : exponent (value = frac x 2^exponent) */ + ); + int32 power_of_2( /* (o) Q0 : result (range: 0<=val<=0x7fffffff) */ + int16 exponant, /* (i) Q0 : Integer part. (range: 0<=val<=30) */ + int16 fraction /* (i) Q15 : Fractionnal part. (range: 0.0<=val<1.0) */ + ); + int32 Dot_product12( /* (o) Q31: normalized result (1 < val <= -1) */ + int16 x[], /* (i) 12bits: x vector */ + int16 y[], /* (i) 12bits: y vector */ + int16 lg, /* (i) : vector length */ + int16 * exp /* (o) : exponent of result (0..+30) */ + ); + + + void amrwb_log_2( + int32 L_x, /* (i) : input value */ + int16 *exponent, /* (o) : Integer part of Log2. (range: 0<=val<=30) */ + int16 *fraction /* (o) : Fractional part of Log2. (range: 0<=val<1)*/ + ); + + void Lg2_normalized( + int32 L_x, /* (i) : input value (normalized) */ + int16 exp, /* (i) : norm_l (L_x) */ + int16 *exponent, /* (o) : Integer part of Log2. (range: 0<=val<=30) */ + int16 *fraction /* (o) : Fractional part of Log2. (range: 0<=val<1) */ + ); + + + int16 mult_int16_r(int16 var1, int16 var2); /* Mult with round, 2 */ + int16 shr_rnd(int16 var1, int16 var2); /* Shift right with round, 2 */ + + int16 div_16by16(int16 var1, int16 var2); /* Short division, 18 */ + + + void int32_to_dpf(int32 L_32, int16 *hi, int16 *lo); + int32 mpy_dpf_32(int16 hi1, int16 lo1, int16 hi2, int16 lo2); + + +#define norm_s( x) (normalize_amr_wb( x) - 16) + + +#define extract_h( x) (int16)(x>>16) +#define L_deposit_h( x) (int32)(x<<16) + + +#ifdef __cplusplus +} +#endif + + +#endif /* PVAMRWB_MATH_OP_H */ + |