2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
3 ** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com
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.
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.
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.
19 ** Any non-GPL usage of this software or parts of this software is strictly
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"
25 ** Commercial non-GPL licensing of this software is possible.
26 ** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
28 ** $Id: drm_dec.h,v 1.8 2007/11/01 12:33:30 menno Exp $
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
52 uint8_t drm_ps_data_available;
54 uint8_t bs_enable_pan;
56 uint8_t bs_sa_dt_flag;
57 uint8_t bs_pan_dt_flag;
59 uint8_t g_last_had_sa;
60 uint8_t g_last_had_pan;
62 int8_t bs_sa_data[DRM_NUM_SA_BANDS];
63 int8_t bs_pan_data[DRM_NUM_PAN_BANDS];
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];
70 int8_t sa_decode_error;
71 int8_t pan_decode_error;
73 int8_t g_last_good_sa_index[DRM_NUM_SA_BANDS];
74 int8_t g_last_good_pan_index[DRM_NUM_PAN_BANDS];
76 qmf_t SA[NUM_OF_SUBSAMPLES][MAX_SA_BAND];
78 complex_t d_buff[2][MAX_SA_BAND];
79 complex_t d2_buff[NUM_OF_LINKS][MAX_DELAY][MAX_SA_BAND];
81 uint8_t delay_buf_index_ser[NUM_OF_LINKS];
83 real_t prev_nrg[MAX_SA_BAND];
84 real_t prev_peakdiff[MAX_SA_BAND];
85 real_t peakdecay_fast[MAX_SA_BAND];
89 uint16_t drm_ps_data(drm_ps_info *ps, bitfile *ld);
91 drm_ps_info *drm_ps_init(void);
92 void drm_ps_free(drm_ps_info *ps);
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]);