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Diffstat (limited to 'media/libstagefright/codecs/amrnb/enc/src/ton_stab.h')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/enc/src/ton_stab.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/enc/src/ton_stab.h b/media/libstagefright/codecs/amrnb/enc/src/ton_stab.h new file mode 100644 index 0000000..fb06e64 --- /dev/null +++ b/media/libstagefright/codecs/amrnb/enc/src/ton_stab.h @@ -0,0 +1,155 @@ +/* ------------------------------------------------------------------ + * 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_ */ + + + + |