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/* ------------------------------------------------------------------
* 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.
* -------------------------------------------------------------------
*/
/*
Pathname: s_TNS_frame_info.h
------------------------------------------------------------------------------
REVISION HISTORY
Description: Modified to eliminate triple-nested structure, which wasted
2 KB of memory.
Description:
(1) Modified to include the lines...
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
}
#endif
(2) Updated the copyright header.
Description:
(1) Changed hard coded size of arrays from "8" to "TNS_MAX_WIN"
(2) Moved elements from s_TNSinfo.h up to the level of TNS_frame_info
(3) Added Bool "tns_data_present" for future use.
(4) Moved lpc_coef up from s_TNSfilt.h (allowed for use of smaller array.)
Description:
(1) Removed the array "coef_res", which is now a local variable on the
stack inside get_tns.c
Who: Date:
Description:
------------------------------------------------------------------------------
INCLUDE DESCRIPTION
This include file defines the structure, s_TNS_frame_info
------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
; CONTINUE ONLY IF NOT ALREADY DEFINED
----------------------------------------------------------------------------*/
#ifndef S_TNS_FRAME_INFO_H
#define S_TNS_FRAME_INFO_H
#ifdef __cplusplus
extern "C"
{
#endif
/*----------------------------------------------------------------------------
; INCLUDES
----------------------------------------------------------------------------*/
#include "pv_audio_type_defs.h"
#include "e_tns_const.h"
#include "s_tnsfilt.h"
/*----------------------------------------------------------------------------
; 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
{
Bool tns_data_present;
/* Information about the number of filters for each window. */
Int n_filt[TNS_MAX_WIN];
/*
* Filter Information
*
* For short windows, there is a maximum of
* 1 filter per window (8 total)
*
* For long windows, there is a maximum of 3 filters
*
*/
TNSfilt filt[TNS_MAX_WIN];
/*
* For short windows, there is a maximum of 8 filters,
* each of order 7 (requring 56 Ints)
*
* For long windows, there is a maximum of 3 filters,
* each of order 20 (requiring 60 Ints)
*
* So, 3*TNS_MAX_ORDER declares an array of sufficient
* size (60) for both cases.
*/
Int32 lpc_coef[3*TNS_MAX_ORDER];
} TNS_frame_info;
/*----------------------------------------------------------------------------
; GLOBAL FUNCTION DEFINITIONS
; Function Prototype declaration
----------------------------------------------------------------------------*/
#ifdef __cplusplus
}
#endif
#endif /* S_TNS_FRAME_INFO_H */
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