| /* ------------------------------------------------------------------ |
| * 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/gsmamr_dec.h |
| |
| Date: 09/10/2001 |
| |
| ------------------------------------------------------------------------------ |
| REVISION HISTORY |
| |
| Description: Adding comments and removing some tables as per review comments. |
| |
| Description: Replace enum Mode with enum Frame_Type_3GPP and updated function |
| prototype of AMRDecode(). |
| |
| Description: Added back the enum Mode type definition, removed RXFrameType |
| type definition, and updated AMRDecode and GSMInitDecode function |
| prototypes. |
| |
| Description: Added #defines for WMF and IF2. Updated AMRDecode function |
| prototype. |
| |
| Description: Removed enum Mode type definition and updated AMRDecode function |
| prototype. |
| |
| Description: Renamed WMF and IF2 to AMR_WMF and AMR_IF2, respectively. Added |
| #define for AMR_ETS format. |
| |
| Description: Rename input format defines to make it unique to the decoder. |
| |
| Description: Added comment to describe L_FRAME. |
| |
| Description: Moved _cplusplus #ifdef after Include section. |
| |
| Description: Included file "typedefs.h" to avoid re-declaring similar typedef |
| this for OSCL-ed compatibility |
| |
| Description: Included file "gsm_amr_typedefs.h" and eliminated re-definition |
| of types UWord8, Word8, Word16 |
| |
| Description: |
| |
| ------------------------------------------------------------------------------ |
| INCLUDE DESCRIPTION |
| |
| This header contains all the necessary information needed to allow the gsm amr |
| decoder library to be used properly upon release. |
| |
| ------------------------------------------------------------------------------ |
| */ |
| #ifndef _GSMAMR_DEC_H_ |
| #define _GSMAMR_DEC_H_ |
| |
| /*---------------------------------------------------------------------------- |
| ; INCLUDES |
| ----------------------------------------------------------------------------*/ |
| |
| #include "gsm_amr_typedefs.h" |
| #include "frame_type_3gpp.h" |
| #include "amrdecode.h" |
| |
| /*--------------------------------------------------------------------------*/ |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| /*---------------------------------------------------------------------------- |
| ; MACROS |
| ----------------------------------------------------------------------------*/ |
| |
| |
| /*---------------------------------------------------------------------------- |
| ; DEFINES |
| ----------------------------------------------------------------------------*/ |
| /* Number of 13-bit linear PCM samples per 20 ms frame */ |
| /* L_FRAME = (8 kHz) * (20 msec) = 160 samples */ |
| #define L_FRAME 160 |
| |
| /*---------------------------------------------------------------------------- |
| ; EXTERNAL VARIABLES REFERENCES |
| ----------------------------------------------------------------------------*/ |
| |
| |
| /*---------------------------------------------------------------------------- |
| ; SIMPLE TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; ENUMERATED TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| /*---------------------------------------------------------------------------- |
| ; STRUCTURES TYPEDEF'S |
| ----------------------------------------------------------------------------*/ |
| |
| |
| /*---------------------------------------------------------------------------- |
| ; GLOBAL FUNCTION DEFINITIONS |
| ----------------------------------------------------------------------------*/ |
| /* |
| * This function allocates memory for filter structure and initializes state |
| * memory used by the GSM AMR decoder. This function returns zero. It will |
| * return negative one if there is an error. |
| */ |
| Word16 GSMInitDecode(void **state_data, |
| Word8 *id); |
| |
| /* |
| * This function resets the state memory used by the GSM AMR decoder. This |
| * function returns zero. It will return negative one if there is an error. |
| */ |
| Word16 Speech_Decode_Frame_reset(void *state_data); |
| |
| /* |
| * This function frees up the memory used for the state memory of the |
| * GSM AMR decoder. |
| */ |
| void GSMDecodeFrameExit(void **state_data); |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _GSMAMR_DEC_H_ */ |
| |
