1 /* 2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding 3 ** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com 4 ** 5 ** This program is free software; you can redistribute it and/or modify 6 ** it under the terms of the GNU General Public License as published by 7 ** the Free Software Foundation; either version 2 of the License, or 8 ** (at your option) any later version. 9 ** 10 ** This program is distributed in the hope that it will be useful, 11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 ** GNU General Public License for more details. 14 ** 15 ** You should have received a copy of the GNU General Public License 16 ** along with this program; if not, write to the Free Software 17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 ** 19 ** Any non-GPL usage of this software or parts of this software is strictly 20 ** forbidden. 21 ** 22 ** The "appropriate copyright message" mentioned in section 2c of the GPLv2 23 ** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com" 24 ** 25 ** Commercial non-GPL licensing of this software is possible. 26 ** For more info contact Nero AG through Mpeg4AAClicense@nero.com. 27 ** 28 ** $Id: drm_dec.h,v 1.8 2007/11/01 12:33:30 menno Exp $ 29 **/ 30 31 #ifndef __DRM_DEC_H__ 32 #define __DRM_DEC_H__ 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #include "bits.h" 39 40 #define DRM_PARAMETRIC_STEREO 0 41 #define DRM_NUM_SA_BANDS 8 42 #define DRM_NUM_PAN_BANDS 20 43 #define NUM_OF_LINKS 3 44 #define NUM_OF_QMF_CHANNELS 64 45 #define NUM_OF_SUBSAMPLES 30 46 #define MAX_SA_BAND 46 47 #define MAX_PAN_BAND 64 48 #define MAX_DELAY 5 49 50 typedef struct 51 { 52 uint8_t drm_ps_data_available; 53 uint8_t bs_enable_sa; 54 uint8_t bs_enable_pan; 55 56 uint8_t bs_sa_dt_flag; 57 uint8_t bs_pan_dt_flag; 58 59 uint8_t g_last_had_sa; 60 uint8_t g_last_had_pan; 61 62 int8_t bs_sa_data[DRM_NUM_SA_BANDS]; 63 int8_t bs_pan_data[DRM_NUM_PAN_BANDS]; 64 65 int8_t g_sa_index[DRM_NUM_SA_BANDS]; 66 int8_t g_pan_index[DRM_NUM_PAN_BANDS]; 67 int8_t g_prev_sa_index[DRM_NUM_SA_BANDS]; 68 int8_t g_prev_pan_index[DRM_NUM_PAN_BANDS]; 69 70 int8_t sa_decode_error; 71 int8_t pan_decode_error; 72 73 int8_t g_last_good_sa_index[DRM_NUM_SA_BANDS]; 74 int8_t g_last_good_pan_index[DRM_NUM_PAN_BANDS]; 75 76 qmf_t SA[NUM_OF_SUBSAMPLES][MAX_SA_BAND]; 77 78 complex_t d_buff[2][MAX_SA_BAND]; 79 complex_t d2_buff[NUM_OF_LINKS][MAX_DELAY][MAX_SA_BAND]; 80 81 uint8_t delay_buf_index_ser[NUM_OF_LINKS]; 82 83 real_t prev_nrg[MAX_SA_BAND]; 84 real_t prev_peakdiff[MAX_SA_BAND]; 85 real_t peakdecay_fast[MAX_SA_BAND]; 86 } drm_ps_info; 87 88 89 uint16_t drm_ps_data(drm_ps_info *ps, bitfile *ld); 90 91 drm_ps_info *drm_ps_init(void); 92 void drm_ps_free(drm_ps_info *ps); 93 94 uint8_t drm_ps_decode(drm_ps_info *ps, uint8_t guess, qmf_t X_left[38][64], qmf_t X_right[38][64]); 95 96 #ifdef __cplusplus 97 } 98 #endif 99 #endif 100 101