ref: 891c7d0545e6138e23373883eacf2d10442a7e36
dir: /libfaad/drm_dec.h/
/*
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
**
** 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 of the License, 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; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
**
** Any non-GPL usage of this software or parts of this software is strictly
** forbidden.
**
** Commercial non-GPL licensing of this software is possible.
** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
**
** $Id: drm_dec.h,v 1.4 2004/09/04 14:56:28 menno Exp $
**/
#ifndef __DRM_DEC_H__
#define __DRM_DEC_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "bits.h"
#define DRM_PARAMETRIC_STEREO 0
#define DRM_NUM_SA_BANDS 8
#define DRM_NUM_PAN_BANDS 20
#define NUM_OF_LINKS 3
#define NUM_OF_QMF_CHANNELS 64
#define NUM_OF_SUBSAMPLES 30
#define MAX_SA_BAND 46
#define MAX_PAN_BAND 64
#define MAX_DELAY 5
typedef struct
{
uint8_t drm_ps_data_available;
uint8_t bs_enable_sa;
uint8_t bs_enable_pan;
uint8_t bs_sa_dt_flag;
uint8_t bs_pan_dt_flag;
uint8_t g_last_had_sa;
uint8_t g_last_had_pan;
int8_t bs_sa_data[DRM_NUM_SA_BANDS];
int8_t bs_pan_data[DRM_NUM_PAN_BANDS];
int8_t g_sa_index[DRM_NUM_SA_BANDS];
int8_t g_pan_index[DRM_NUM_PAN_BANDS];
int8_t g_prev_sa_index[DRM_NUM_SA_BANDS];
int8_t g_prev_pan_index[DRM_NUM_PAN_BANDS];
int8_t sa_decode_error;
int8_t pan_decode_error;
int8_t g_last_good_sa_index[DRM_NUM_SA_BANDS];
int8_t g_last_good_pan_index[DRM_NUM_PAN_BANDS];
qmf_t SA[NUM_OF_SUBSAMPLES][MAX_SA_BAND];
complex_t d_buff[2][MAX_SA_BAND];
complex_t d2_buff[NUM_OF_LINKS][MAX_DELAY][MAX_SA_BAND];
uint8_t delay_buf_index_ser[NUM_OF_LINKS];
real_t prev_nrg[MAX_SA_BAND];
real_t prev_peakdiff[MAX_SA_BAND];
real_t peakdecay_fast[MAX_SA_BAND];
} drm_ps_info;
uint16_t drm_ps_data(drm_ps_info *ps, bitfile *ld);
drm_ps_info *drm_ps_init(void);
void drm_ps_free(drm_ps_info *ps);
uint8_t drm_ps_decode(drm_ps_info *ps, uint8_t guess, uint32_t samplerate, qmf_t X_left[38][64], qmf_t X_right[38][64]);
#ifdef __cplusplus
}
#endif
#endif