98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
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/*
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** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
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** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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**
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** Any non-GPL usage of this software or parts of this software is strictly
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** forbidden.
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**
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** Commercial non-GPL licensing of this software is possible.
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** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
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**
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** $Id$
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**/
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#ifndef __DRM_DEC_H__
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#define __DRM_DEC_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "bits.h"
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#define DRM_PARAMETRIC_STEREO 0
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#define DRM_NUM_SA_BANDS 8
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#define DRM_NUM_PAN_BANDS 20
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#define NUM_OF_LINKS 3
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#define NUM_OF_QMF_CHANNELS 64
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#define NUM_OF_SUBSAMPLES 30
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#define MAX_SA_BAND 46
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#define MAX_PAN_BAND 64
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#define MAX_DELAY 5
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typedef struct
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{
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uint8_t drm_ps_data_available;
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uint8_t bs_enable_sa;
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uint8_t bs_enable_pan;
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uint8_t bs_sa_dt_flag;
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uint8_t bs_pan_dt_flag;
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uint8_t g_last_had_sa;
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uint8_t g_last_had_pan;
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int8_t bs_sa_data[DRM_NUM_SA_BANDS];
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int8_t bs_pan_data[DRM_NUM_PAN_BANDS];
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int8_t g_sa_index[DRM_NUM_SA_BANDS];
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int8_t g_pan_index[DRM_NUM_PAN_BANDS];
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int8_t g_prev_sa_index[DRM_NUM_SA_BANDS];
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int8_t g_prev_pan_index[DRM_NUM_PAN_BANDS];
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int8_t sa_decode_error;
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int8_t pan_decode_error;
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int8_t g_last_good_sa_index[DRM_NUM_SA_BANDS];
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int8_t g_last_good_pan_index[DRM_NUM_PAN_BANDS];
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qmf_t SA[NUM_OF_SUBSAMPLES][MAX_SA_BAND];
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complex_t d_buff[2][MAX_SA_BAND];
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complex_t d2_buff[NUM_OF_LINKS][MAX_DELAY][MAX_SA_BAND];
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uint8_t delay_buf_index_ser[NUM_OF_LINKS];
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real_t prev_nrg[MAX_SA_BAND];
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real_t prev_peakdiff[MAX_SA_BAND];
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real_t peakdecay_fast[MAX_SA_BAND];
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} drm_ps_info;
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uint16_t drm_ps_data(drm_ps_info *ps, bitfile *ld);
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drm_ps_info *drm_ps_init(void);
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void drm_ps_free(drm_ps_info *ps);
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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]);
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#ifdef __cplusplus
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}
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#endif
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#endif
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