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Diffstat (limited to 'media/libstagefright/codecs/amrnb/dec/src/post_pro.h')
| -rw-r--r-- | media/libstagefright/codecs/amrnb/dec/src/post_pro.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrnb/dec/src/post_pro.h b/media/libstagefright/codecs/amrnb/dec/src/post_pro.h new file mode 100644 index 0000000..85e5888 --- /dev/null +++ b/media/libstagefright/codecs/amrnb/dec/src/post_pro.h @@ -0,0 +1,140 @@ +/* ------------------------------------------------------------------ + * 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/post_pro.h + + Date: 02/04/2002 + +------------------------------------------------------------------------------ + REVISION HISTORY + + Description: Replaced "int" and/or "char" with OSCL defined types. + + Description: Moved _cplusplus #ifdef after Include section. + + Description: + +------------------------------------------------------------------------------ + INCLUDE DESCRIPTION + + File : post_pro.h + Purpose : Postprocessing of output speech. + + - 2nd order high pass filtering with cut + off frequency at 60 Hz. + - Multiplication of output by two. +------------------------------------------------------------------------------ +*/ + +#ifndef _POST_PRO_H_ +#define _POST_PRO_H_ +#define post_pro_h "$Id $" + +/*---------------------------------------------------------------------------- +; INCLUDES +----------------------------------------------------------------------------*/ +#include "typedef.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 + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; ENUMERATED TYPEDEF'S + ----------------------------------------------------------------------------*/ + + /*---------------------------------------------------------------------------- + ; STRUCTURES TYPEDEF'S + ----------------------------------------------------------------------------*/ + typedef struct + { + Word16 y2_hi; + Word16 y2_lo; + Word16 y1_hi; + Word16 y1_lo; + Word16 x0; + Word16 x1; + } Post_ProcessState; + + /*---------------------------------------------------------------------------- + ; GLOBAL FUNCTION DEFINITIONS + ; [List function prototypes here] + ----------------------------------------------------------------------------*/ + + Word16 Post_Process_reset(Post_ProcessState *st); + /* reset of Post processing state (i.e. set state memory to zero) + returns 0 on success + */ + void Post_Process_exit(Post_ProcessState **st); + /* de-initialize Post processing state (i.e. free status struct) + stores NULL in *st + */ + + void Post_Process( + Post_ProcessState *st, /* i/o : post process state */ + Word16 signal[], /* i/o : signal */ + Word16 lg, /* i : lenght of signal */ + Flag *pOverflow + ); + +#ifdef __cplusplus +} +#endif + +#endif /* _POST_PRO_H_ */ + + + + + |