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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_TNSfilt.h
------------------------------------------------------------------------------
REVISION HISTORY
Description: Added lpc, start, & size, so the data from
tns_inv_subblock can be shared with tns_decode_subblock.
Description: Removed lpc to save 2KB of memory (on 32-bit machines.)
This change requires tns_decode_coef.c to perform calculations in place.
Description: Removed start & size. start_band and stop_band can simply
take on a new meaning after this function. (coef index, rather than
scalefactor band index.)
Description: Had to add "start_coef" and "stop_coef" in order to preserve
values "start_band" and "stop_band." This required a change to
tns_setup_filter.c also.
Description: Had to add element "q_lpc" to store the q-format of the lpc
coefficients passed via "coef."
Description: Moved lpc_coef array up to the s_TNS_frame_info.h structure.
Description:
(1) Modified to include the lines...
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
}
#endif
(2) Updated the copyright header.
Who: Date:
Description:
------------------------------------------------------------------------------
INCLUDE DESCRIPTION
This include file defines the structure, s_TNSfilt
------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
; CONTINUE ONLY IF NOT ALREADY DEFINED
----------------------------------------------------------------------------*/
#ifndef S_TNSFILT_H
#define S_TNSFILT_H
#ifdef __cplusplus
extern "C"
{
#endif
/*----------------------------------------------------------------------------
; INCLUDES
----------------------------------------------------------------------------*/
#include "pv_audio_type_defs.h"
#include "e_tns_const.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
{
Int start_band;
Int stop_band;
Int start_coef;
Int stop_coef;
UInt order;
Int direction;
Int q_lpc;
} TNSfilt;
/*----------------------------------------------------------------------------
; GLOBAL FUNCTION DEFINITIONS
; Function Prototype declaration
----------------------------------------------------------------------------*/
#ifdef __cplusplus
}
#endif
#endif /* S_TNSFILT_H */
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