1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/*
** 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: sbr_dec.h,v 1.35 2004/09/04 14:56:28 menno Exp $
**/
#ifndef __SBR_DEC_H__
#define __SBR_DEC_H__
#ifdef __cplusplus
extern "C" {
#endif
#ifdef PS_DEC
#include "ps_dec.h"
#endif
#ifdef DRM_PS
#include "drm_dec.h"
#endif
/* MAX_NTSRHFG: maximum of number_time_slots * rate + HFGen. 16*2+8 */
#define MAX_NTSRHFG 40
#define MAX_NTSR 32 /* max number_time_slots * rate, ok for DRM and not DRM mode */
/* MAX_M: maximum value for M */
#define MAX_M 49
/* MAX_L_E: maximum value for L_E */
#define MAX_L_E 5
typedef struct {
real_t *x;
int16_t x_index;
uint8_t channels;
} qmfa_info;
typedef struct {
real_t *v;
int16_t v_index;
uint8_t channels;
} qmfs_info;
typedef struct
{
uint32_t sample_rate;
uint32_t maxAACLine;
uint8_t rate;
uint8_t just_seeked;
uint8_t ret;
uint8_t amp_res[2];
uint8_t k0;
uint8_t kx;
uint8_t M;
uint8_t N_master;
uint8_t N_high;
uint8_t N_low;
uint8_t N_Q;
uint8_t N_L[4];
uint8_t n[2];
uint8_t f_master[64];
uint8_t f_table_res[2][64];
uint8_t f_table_noise[64];
uint8_t f_table_lim[4][64];
#ifdef SBR_LOW_POWER
uint8_t f_group[5][64];
uint8_t N_G[5];
#endif
uint8_t table_map_k_to_g[64];
uint8_t abs_bord_lead[2];
uint8_t abs_bord_trail[2];
uint8_t n_rel_lead[2];
uint8_t n_rel_trail[2];
uint8_t L_E[2];
uint8_t L_E_prev[2];
uint8_t L_Q[2];
uint8_t t_E[2][MAX_L_E+1];
uint8_t t_Q[2][3];
uint8_t f[2][MAX_L_E+1];
uint8_t f_prev[2];
real_t *G_temp_prev[2][5];
real_t *Q_temp_prev[2][5];
int8_t GQ_ringbuf_index[2];
int16_t E[2][64][MAX_L_E];
int16_t E_prev[2][64];
#ifndef FIXED_POINT
real_t E_orig[2][64][MAX_L_E];
#endif
real_t E_curr[2][64][MAX_L_E];
int32_t Q[2][64][2];
#ifndef FIXED_POINT
real_t Q_div[2][64][2];
real_t Q_div2[2][64][2];
#endif
int32_t Q_prev[2][64];
int8_t l_A[2];
int8_t l_A_prev[2];
uint8_t bs_invf_mode[2][MAX_L_E];
uint8_t bs_invf_mode_prev[2][MAX_L_E];
real_t bwArray[2][64];
real_t bwArray_prev[2][64];
uint8_t noPatches;
uint8_t patchNoSubbands[64];
uint8_t patchStartSubband[64];
uint8_t bs_add_harmonic[2][64];
uint8_t bs_add_harmonic_prev[2][64];
uint16_t index_noise_prev[2];
uint8_t psi_is_prev[2];
uint8_t bs_start_freq_prev;
uint8_t bs_stop_freq_prev;
uint8_t bs_xover_band_prev;
uint8_t bs_freq_scale_prev;
uint8_t bs_alter_scale_prev;
uint8_t bs_noise_bands_prev;
int8_t prevEnvIsShort[2];
int8_t kx_prev;
uint8_t bsco;
uint8_t bsco_prev;
uint8_t M_prev;
uint16_t frame_len;
uint8_t Reset;
uint32_t frame;
uint32_t header_count;
uint8_t id_aac;
qmfa_info *qmfa[2];
qmfs_info *qmfs[2];
qmf_t Xsbr[2][MAX_NTSRHFG][64];
#ifdef DRM
uint8_t Is_DRM_SBR;
#ifdef DRM_PS
drm_ps_info *drm_ps;
#endif
#endif
uint8_t numTimeSlotsRate;
uint8_t numTimeSlots;
uint8_t tHFGen;
uint8_t tHFAdj;
#ifdef PS_DEC
ps_info *ps;
#endif
#if (defined(PS_DEC) || defined(DRM_PS))
uint8_t ps_used;
#endif
/* to get it compiling */
/* we'll see during the coding of all the tools, whether
these are all used or not.
*/
uint8_t bs_header_flag;
uint8_t bs_crc_flag;
uint16_t bs_sbr_crc_bits;
uint8_t bs_protocol_version;
uint8_t bs_amp_res;
uint8_t bs_start_freq;
uint8_t bs_stop_freq;
uint8_t bs_xover_band;
uint8_t bs_freq_scale;
uint8_t bs_alter_scale;
uint8_t bs_noise_bands;
uint8_t bs_limiter_bands;
uint8_t bs_limiter_gains;
uint8_t bs_interpol_freq;
uint8_t bs_smoothing_mode;
uint8_t bs_samplerate_mode;
uint8_t bs_add_harmonic_flag[2];
uint8_t bs_add_harmonic_flag_prev[2];
uint8_t bs_extended_data;
uint8_t bs_extension_id;
uint8_t bs_extension_data;
uint8_t bs_coupling;
uint8_t bs_frame_class[2];
uint8_t bs_rel_bord[2][9];
uint8_t bs_rel_bord_0[2][9];
uint8_t bs_rel_bord_1[2][9];
uint8_t bs_pointer[2];
uint8_t bs_abs_bord_0[2];
uint8_t bs_abs_bord_1[2];
uint8_t bs_num_rel_0[2];
uint8_t bs_num_rel_1[2];
uint8_t bs_df_env[2][9];
uint8_t bs_df_noise[2][3];
} sbr_info;
sbr_info *sbrDecodeInit(uint16_t framelength, uint8_t id_aac,
uint32_t sample_rate, uint8_t downSampledSBR
#ifdef DRM
, uint8_t IsDRM
#endif
);
void sbrDecodeEnd(sbr_info *sbr);
uint8_t sbrDecodeCoupleFrame(sbr_info *sbr, real_t *left_chan, real_t *right_chan,
const uint8_t just_seeked, const uint8_t downSampledSBR);
uint8_t sbrDecodeSingleFrame(sbr_info *sbr, real_t *channel,
const uint8_t just_seeked, const uint8_t downSampledSBR);
#if (defined(PS_DEC) || defined(DRM_PS))
uint8_t sbrDecodeSingleFramePS(sbr_info *sbr, real_t *left_channel, real_t *right_channel,
const uint8_t just_seeked, const uint8_t downSampledSBR);
#endif
#ifdef __cplusplus
}
#endif
#endif
|
