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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_tDec_Int_Chan.h
------------------------------------------------------------------------------
REVISION HISTORY
Description: Change data types of win
Description: Remove wnd_shape structure.
Description: Remove dependency on window_block.h, Fix header too.
Description:
Modified to utilize memory in the last 1024 elements in fxpCoef.
Description:
(1) Modified to include the lines...
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
}
#endif
(2) Updated the copyright header.
Description:
(1) Move temporary FrameInfo structure into the shared region with fxpCoef.
(2) Add more comments detailing the size of the shared structure.
Description:
(1) Changed time_quant from 2048 Int32 buffer to 1024 Int32 buffer.
Who: Date:
Description:
------------------------------------------------------------------------------
INCLUDE DESCRIPTION
This include file defines the structure, tDec_Int_Chan
------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
; CONTINUE ONLY IF NOT ALREADY DEFINED
----------------------------------------------------------------------------*/
#ifndef S_TDEC_INT_CHAN_H
#define S_TDEC_INT_CHAN_H
#ifdef __cplusplus
extern "C"
{
#endif
/*----------------------------------------------------------------------------
; INCLUDES
----------------------------------------------------------------------------*/
#include "pv_audio_type_defs.h"
#include "e_rawbitstreamconst.h"
#include "s_tns_frame_info.h"
#include "s_wnd_shape.h"
#include "s_lt_pred_status.h"
#include "s_sectinfo.h"
#include "s_frameinfo.h"
#include "e_window_shape.h"
#include "e_window_sequence.h"
#include "window_block_fxp.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
----------------------------------------------------------------------------*/
/* This structure was created with the specific goal in mind of sharing memory
* with the last 1024 data elements in fxpCoef.
*
* The size of this structure must NOT exceed 4 kilobytes
* Also, the size of the fxpCoef array cannot be less than 8 kilobytes
*
* The fxpCoef array is declared as an Int32, so its size should not vary
* from platform to platform.
*
* The shared structure is 3,640 bytes (3.55 KB), on a 32-bit platform,
* which represents the worst case.
*/
typedef struct
{
TNS_frame_info tns;
FrameInfo frameInfo;
Int factors[MAXBANDS];
Int cb_map[MAXBANDS];
Int group[NSHORT];
Int qFormat[MAXBANDS];
Int max_sfb;
LT_PRED_STATUS lt_status;
} per_chan_share_w_fxpCoef;
/*
* This structure contains one per channel.
*/
typedef struct
{
#ifdef AAC_PLUS
Int16 ltp_buffer[LT_BLEN + 2*288]; /* LT_BLEN = 2048 + 2*288 */
#else
Int16 ltp_buffer[LT_BLEN]; /* LT_BLEN = 2048 */
#endif
Int32 time_quant[LONG_WINDOW]; /* 1024 holds overlap&add */
Int32 *fxpCoef; /* Spectrum coeff.*/
per_chan_share_w_fxpCoef * pShareWfxpCoef;
Int32 abs_max_per_window[NUM_SHORT_WINDOWS];
WINDOW_SEQUENCE wnd;
WINDOW_SHAPE wnd_shape_prev_bk;
WINDOW_SHAPE wnd_shape_this_bk;
} tDec_Int_Chan;
/*----------------------------------------------------------------------------
; GLOBAL FUNCTION DEFINITIONS
; Function Prototype declaration
----------------------------------------------------------------------------*/
#ifdef __cplusplus
}
#endif
#endif /* S_TDEC_INT_CHAN_H */
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