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Diffstat (limited to 'opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/ph_disp.h')
| -rw-r--r-- | opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/ph_disp.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/ph_disp.h b/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/ph_disp.h new file mode 100644 index 0000000..e48aea0 --- /dev/null +++ b/opencore/codecs_v2/audio/gsm_amr/amr_nb/dec/src/ph_disp.h @@ -0,0 +1,173 @@ +/* ------------------------------------------------------------------ + * 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 26.073 + ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec + Available from http://www.3gpp.org + +(C) 2004, 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. +****************************************************************************************/ +/* +------------------------------------------------------------------------------ + + + + Filename: ph_disp.h + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + This file contains all the constant definitions and prototype definitions + needed by the Phase dispersion of excitation signal ph_disp() function. + +------------------------------------------------------------------------------ +*/ + +#ifndef PH_DISP_H +#define PH_DISP_H "$Id $" + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "typedef.h" +#include "mode.h" +#include "get_const_tbls.h" + +/*--------------------------------------------------------------------------*/ +#ifdef __cplusplus +extern "C" +{ +#endif + + /*---------------------------------------------------------------------------- + ; MACROS + ; Define module specific macros here + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; DEFINES + ; Include all pre-processor statements here. + ----------------------------------------------------------------------------*/ +#define PHDGAINMEMSIZE 5 +#define PHDTHR1LTP 9830 /* 0.6 in Q14 */ +#define PHDTHR2LTP 14746 /* 0.9 in Q14 */ +#define ONFACTPLUS1 16384 /* 2.0 in Q13 */ +#define ONLENGTH 2 + + /*---------------------------------------------------------------------------- + ; EXTERNAL VARIABLES REFERENCES + ; Declare variables used in this module but defined elsewhere + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; SIMPLE TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + typedef struct + { + Word16 gainMem[PHDGAINMEMSIZE]; + Word16 prevState; + Word16 prevCbGain; + Word16 lockFull; + Word16 onset; + } ph_dispState; + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; Function Prototype declaration + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; + ; Function: ph_disp_reset + ; Purpose: Initializes state memory + ; + ----------------------------------------------------------------------------*/ + Word16 ph_disp_reset(ph_dispState *state); + + /*---------------------------------------------------------------------------- + ; + ; Function: ph_disp_exit + ; Purpose: The memory used for state memory is freed + ; + ----------------------------------------------------------------------------*/ + void ph_disp_exit(ph_dispState **state); + + /*---------------------------------------------------------------------------- + ; + ; Function: ph_disp_lock + ; Purpose: mark phase dispersion as locked in state struct + ; + ----------------------------------------------------------------------------*/ + void ph_disp_lock(ph_dispState *state); + + /*---------------------------------------------------------------------------- + ; + ; Function: ph_disp_release + ; Purpose: mark phase dispersion as unlocked in state struct + ; + ----------------------------------------------------------------------------*/ + + void ph_disp_release(ph_dispState *state); + + /*---------------------------------------------------------------------------- + ; + ; Function: ph_disp + ; Purpose: perform phase dispersion according to the specified codec + ; mode and computes total excitation for synthesis part + ; if decoder + ; + ----------------------------------------------------------------------------*/ + + void ph_disp( + ph_dispState *state, /* i/o : State struct */ + enum Mode mode, /* i : codec mode */ + Word16 x[], /* i/o Q0 : in: LTP excitation signal */ + /* out: total excitation signal */ + Word16 cbGain, /* i Q1 : Codebook gain */ + Word16 ltpGain, /* i Q14 : LTP gain */ + Word16 inno[], /* i/o Q13 : Innovation vector (Q12 for 12.2) */ + Word16 pitch_fac, /* i Q14 : pitch factor used to scale the + LTP excitation (Q13 for 12.2) */ + Word16 tmp_shift, /* i Q0 : shift factor applied to sum of + scaled LTP ex & innov. before + rounding */ + CommonAmrTbls* common_amr_tbls, /* i : ptr to struct of table ptrs */ + Flag *pOverflow /* i/o : oveflow indicator */ + ); + + /*---------------------------------------------------------------------------- + ; END + ----------------------------------------------------------------------------*/ +#ifdef __cplusplus +} +#endif + +#endif /* _PH_DISP_H_ */ + |