| /* ------------------------------------------------------------------ |
| * 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: /audio/gsm_amr/c/include/ton_stab.h |
| |
| Date: 02/05/2002 |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Description: Replaced "int" and/or "char" with OSCL defined types. |
| |
| Description: Moved _cplusplus #ifdef after Include section. |
| |
| Description: |
| |
| ------------------------------------------------------------------------------ |
| INCLUDE DESCRIPTION |
| |
| File : ton_stab.h |
| Purpose : Tone stabilization routines |
| |
| ------------------------------------------------------------------------------ |
| */ |
| |
| #ifndef TON_STAB_H |
| #define TON_STAB_H |
| #define ton_stab_h "$Id $" |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| #include "typedef.h" |
| #include "mode.h" |
| #include "cnst.h" |
| |
| /*--------------------------------------------------------------------------*/ |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| /*---------------------------------------------------------------------------- |
| ; MACROS |
| ; Define module specific macros here |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; DEFINES |
| ; Include all pre-processor statements here. |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; EXTERNAL VARIABLES REFERENCES |
| ; Declare variables used in this module but defined elsewhere |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; SIMPLE TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| /* state variable */ |
| typedef struct |
| { |
| /* counters */ |
| Word16 count; |
| /* gain history Q11 */ |
| Word16 gp[N_FRAME]; |
| } tonStabState; |
| |
| /*---------------------------------------------------------------------------- |
| ; ENUMERATED TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; STRUCTURES TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; GLOBAL FUNCTION DEFINITIONS |
| ; Function Prototype declaration |
| ----------------------------------------------------------------------------*/ |
| Word16 ton_stab_init(tonStabState **st); |
| /* initialize one instance of the pre processing state. |
| Stores pointer to filter status struct in *st. This pointer has to |
| be passed to ton_stab in each call. |
| returns 0 on success |
| */ |
| |
| Word16 ton_stab_reset(tonStabState *st); |
| /* reset of pre processing state (i.e. set state memory to zero) |
| returns 0 on success |
| */ |
| |
| void ton_stab_exit(tonStabState **st); |
| /* de-initialize pre processing state (i.e. free status struct) |
| stores NULL in *st |
| */ |
| |
| Word16 check_lsp(tonStabState *st, /* i/o : State struct */ |
| Word16 *lsp, /* i : unquantized LSP's */ |
| Flag *pOverflow |
| ); |
| |
| Word16 check_gp_clipping(tonStabState *st, /* i/o : State struct */ |
| Word16 g_pitch, /* i : pitch gain */ |
| Flag *pOverflow |
| ); |
| |
| void update_gp_clipping(tonStabState *st, /* i/o : State struct */ |
| Word16 g_pitch, /* i : pitch gain */ |
| Flag *pOverflow |
| ); |
| |
| /*---------------------------------------------------------------------------- |
| ; END |
| ----------------------------------------------------------------------------*/ |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _TON_STAB_H_ */ |
| |
| |
| |
| |
