ref: fab854e3a169920ccd610717c50633fa11362db3
dir: /interface.h/
/*
* Definitions of Bitstream elements
*
* Copyright (c) 1999 M. Bakker
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/**************************************************************************
Version Control Information Method: CVS
Identifiers:
$Revision: 1.5 $
$Date: 2000/10/31 14:48:41 $ (check in)
$Author: menno $
*************************************************************************/
#ifndef _interface_h_
#define _interface_h_
/* AAC Profile */
enum AAC_PROFILE { MAIN, LOW, SSR };
#define MAX_SAMPLING_RATES 12
enum WINDOW_TYPE {
ONLY_LONG_WINDOW,
LONG_SHORT_WINDOW,
ONLY_SHORT_WINDOW,
SHORT_LONG_WINDOW,
};
#define NSFB_LONG 51
#define NSFB_SHORT 15
#define MAX_SHORT_WINDOWS 8
/* if static memory allocation is used, this value tells the max. nr of
audio channels to be supported */
#define MAX_TIME_CHANNELS 6
/* max. number of scale factor bands */
#define MAX_SCFAC_BANDS ((NSFB_SHORT+1)*MAX_SHORT_WINDOWS)
#define BLOCK_LEN_LONG 1024
#define BLOCK_LEN_SHORT 128
typedef enum {
WS_SIN, WS_KBD, N_WINDOW_SHAPES
} Window_shape;
typedef enum {
MOVERLAPPED,
MNON_OVERLAPPED
} Mdct_in,Imdct_out;
/*
* Raw bitstream constants
*/
#define LEN_SE_ID 3
#define LEN_TAG 4
#define LEN_GLOB_GAIN 8
#define LEN_COM_WIN 1
#define LEN_ICS_RESERV 1
#define LEN_WIN_SEQ 2
#define LEN_WIN_SH 1
#define LEN_MAX_SFBL 6
#define LEN_MAX_SFBS 4
#define LEN_CB 4
#define LEN_SCL_PCM 8
#define LEN_PRED_PRES 1
#define LEN_PRED_RST 1
#define LEN_PRED_RSTGRP 5
#define LEN_PRED_ENAB 1
#define LEN_MASK_PRES 2
#define LEN_MASK 1
#define LEN_PULSE_PRES 1
#define LEN_TNS_PRES 1
#define LEN_TNS_NFILTL 2
#define LEN_TNS_NFILTS 1
#define LEN_TNS_COEFF_RES 1
#define LEN_TNS_LENGTHL 6
#define LEN_TNS_LENGTHS 4
#define LEN_TNS_ORDERL 5
#define LEN_TNS_ORDERS 3
#define LEN_TNS_DIRECTION 1
#define LEN_TNS_COMPRESS 1
#define LEN_GAIN_PRES 1
#define LEN_NEC_NPULSE 2
#define LEN_NEC_ST_SFB 6
#define LEN_NEC_POFF 5
#define LEN_NEC_PAMP 4
#define NUM_NEC_LINES 4
#define NEC_OFFSET_AMP 4
#define LEN_NCC 3
#define LEN_IS_CPE 1
#define LEN_CC_LR 1
#define LEN_CC_DOM 1
#define LEN_CC_SGN 1
#define LEN_CCH_GES 2
#define LEN_CCH_CGP 1
#define LEN_D_CNT 4
#define LEN_D_ESC 12
#define LEN_F_CNT 4
#define LEN_F_ESC 8
#define LEN_BYTE 8
#define LEN_PAD_DATA 8
#define LEN_PC_COMM 8
#define ID_SCE 0
#define ID_CPE 1
#define ID_CCE 2
#define ID_LFE 3
#define ID_DSE 4
#define ID_PCE 5
#define ID_FIL 6
#define ID_END 7
/*
* program configuration element
*/
#define LEN_PROFILE 2
#define LEN_SAMP_IDX 4
#define LEN_NUM_ELE 4
#define LEN_NUM_LFE 2
#define LEN_NUM_DAT 3
#define LEN_NUM_CCE 4
#define LEN_MIX_PRES 1
#define LEN_ELE_IS_CPE 1
#define LEN_IND_SW_CCE 1
#define LEN_COMMENT_BYTES 8
/*
* audio data interchange format header
*/
#define LEN_ADIF_ID (32/8)
#define LEN_COPYRT_PRES 1
#define LEN_COPYRT_ID (72/8)
#define LEN_ORIG 1
#define LEN_HOME 1
#define LEN_BS_TYPE 1
#define LEN_BIT_RATE 23
#define LEN_NUM_PCE 4
#define LEN_ADIF_BF 20
typedef struct {
long sampling_rate; /* the following entries are for this sampling rate */
int num_cb_long;
int num_cb_short;
int cb_width_long[NSFB_LONG];
int cb_width_short[NSFB_SHORT];
} SR_INFO;
typedef struct
{
int is_present;
int ms_used[MAX_SCFAC_BANDS];
} MS_Info;
typedef struct
{
int present; /* channel present */
int tag; /* element tag */
int cpe; /* 0 if single channel or lfe, 1 if channel pair */
int lfe; /* 1 if lfe channel */
int common_window; /* 1 if common window for cpe */
int ch_is_left; /* 1 if left channel of cpe */
int paired_ch; /* index of paired channel in cpe */
int widx; /* window element index for this channel */
MS_Info ms_info; /* MS information */
} Ch_Info;
#endif /* #ifndef _interface_h_ */