| /* ------------------------------------------------------------------ |
| * 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. |
| ****************************************************************************************/ |
| /* |
| ******************************************************************************** |
| * |
| * GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001 |
| * R99 Version 3.2.0 |
| * REL-4 Version 4.0.0 |
| * |
| ******************************************************************************** |
| * |
| * File : pre_proc.h |
| * Purpose : Preprocessing of input speech. |
| * |
| |
| Description: Replaced "int" and/or "char" with OSCL defined types. |
| |
| ******************************************************************************** |
| */ |
| #ifndef pre_proc_h |
| #define pre_proc_h "$Id $" |
| |
| /* |
| ******************************************************************************** |
| * INCLUDE FILES |
| ******************************************************************************** |
| */ |
| #include "typedef.h" |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| /* |
| ******************************************************************************** |
| * LOCAL VARIABLES AND TABLES |
| ******************************************************************************** |
| */ |
| |
| /* |
| ******************************************************************************** |
| * DEFINITION OF DATA TYPES |
| ******************************************************************************** |
| */ |
| typedef struct |
| { |
| Word16 y2_hi; |
| Word16 y2_lo; |
| Word16 y1_hi; |
| Word16 y1_lo; |
| Word16 x0; |
| Word16 x1; |
| } Pre_ProcessState; |
| |
| /* |
| ******************************************************************************** |
| * DECLARATION OF PROTOTYPES |
| ******************************************************************************** |
| */ |
| |
| Word16 Pre_Process_init(Pre_ProcessState **st); |
| /* initialize one instance of the pre processing state. |
| Stores pointer to filter status struct in *st. This pointer has to |
| be passed to Pre_Process in each call. |
| returns 0 on success |
| */ |
| |
| Word16 Pre_Process_reset(Pre_ProcessState *st); |
| /* reset of pre processing state (i.e. set state memory to zero) |
| returns 0 on success |
| */ |
| void Pre_Process_exit(Pre_ProcessState **st); |
| /* de-initialize pre processing state (i.e. free status struct) |
| stores NULL in *st |
| */ |
| |
| void Pre_Process( |
| Pre_ProcessState *st, |
| Word16 signal[], /* Input/output signal */ |
| Word16 lg /* Lenght of signal */ |
| ); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |
