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Diffstat (limited to 'media/libstagefright/codecs/amrnb/common/include/p_ol_wgh.h')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/common/include/p_ol_wgh.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/common/include/p_ol_wgh.h b/media/libstagefright/codecs/amrnb/common/include/p_ol_wgh.h new file mode 100644 index 0000000..6c277da --- /dev/null +++ b/media/libstagefright/codecs/amrnb/common/include/p_ol_wgh.h @@ -0,0 +1,144 @@ +/* ------------------------------------------------------------------ + * 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/src/include/p_ol_wgh.h + +------------------------------------------------------------------------------ + REVISION HISTORY + + Description: Replaced "int" and/or "char" with OSCL defined types. + + Description: Moved _cplusplus #ifdef after Include section. + + Who: Date: + Description: + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + File : p_ol_wgh.h + Purpose : Compute the open loop pitch lag with weighting. + +------------------------------------------------------------------------------ +*/ + +#ifndef P_OL_WGH_H +#define P_OL_WGH_H "$Id $" + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "typedef.h" +#include "mode.h" +#include "vad.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] + ----------------------------------------------------------------------------*/ + extern const Word16 corrweight[]; + + /*---------------------------------------------------------------------------- + ; SIMPLE TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + /* state variable */ + + typedef struct + { + Word16 old_T0_med; + Word16 ada_w; + Word16 wght_flg; + } pitchOLWghtState; + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; [List function prototypes here] + ----------------------------------------------------------------------------*/ + Word16 p_ol_wgh_init(pitchOLWghtState **st); + /* initialize one instance of the pre processing state. + Stores pointer to filter status struct in *st. This pointer has to + be passed to p_ol_wgh in each call. + returns 0 on success + */ + + Word16 p_ol_wgh_reset(pitchOLWghtState *st); + /* reset of pre processing state (i.e. set state memory to zero) + returns 0 on success + */ + + void p_ol_wgh_exit(pitchOLWghtState **st); + /* de-initialize pre processing state (i.e. free status struct) + stores NULL in *st + */ + + Word16 Pitch_ol_wgh( /* o : open loop pitch lag */ + pitchOLWghtState *st, /* i/o : State struct */ + vadState *vadSt, /* i/o : VAD state struct */ + Word16 signal[], /* i : signal used to compute the open loop pitch */ + /* signal[-pit_max] to signal[-1] should be known */ + Word16 pit_min, /* i : minimum pitch lag */ + Word16 pit_max, /* i : maximum pitch lag */ + Word16 L_frame, /* i : length of frame to compute pitch */ + Word16 old_lags[], /* i : history with old stored Cl lags */ + Word16 ol_gain_flg[], /* i : OL gain flag */ + Word16 idx, /* i : index */ + Flag dtx, /* i : dtx flag; use dtx=1, do not use dtx=0 */ + Flag *pOverflow /* o : overflow flag */ + ); + +#ifdef __cplusplus +} +#endif + +#endif /* _P_OL_WGH_H_ */ |