sbr.h
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1 /*
2  * Spectral Band Replication definitions and structures
3  * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
4  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
29 #ifndef AVCODEC_SBR_H
30 #define AVCODEC_SBR_H
31 
32 #include <stdint.h>
33 #include "fft.h"
34 #include "aacps.h"
35 #include "sbrdsp.h"
36 
40 typedef struct SpectrumParameters {
44 
54 
55 #define SBR_SYNTHESIS_BUF_SIZE ((1280-128)*2)
56 
60 typedef struct SBRData {
65  unsigned bs_frame_class;
67  unsigned bs_num_env;
69  unsigned bs_num_noise;
74  unsigned bs_amp_res;
85  int e_a[2];
87  float bw_array[5];
89  float W[2][32][32][2];
91  int Ypos;
92  DECLARE_ALIGNED(16, float, Y)[2][38][64][2];
93  DECLARE_ALIGNED(16, float, g_temp)[42][48];
94  float q_temp[42][48];
97  float env_facs[6][48];
99  float noise_facs[3][5];
106  unsigned f_indexnoise;
107  unsigned f_indexsine;
109 } SBRData;
110 
114 typedef struct SpectralBandReplication {
116  int start;
117  int reset;
129  unsigned bs_coupling;
130  unsigned k[5];
131 
132 
133  unsigned kx[2];
135  unsigned m[2];
136  unsigned kx_and_m_pushed;
138  unsigned n_master;
142  unsigned n[2];
144  unsigned n_q;
146  unsigned n_lim;
148  uint16_t f_master[49];
150  uint16_t f_tablelow[25];
152  uint16_t f_tablehigh[49];
154  uint16_t f_tablenoise[6];
156  uint16_t f_tablelim[29];
157  unsigned num_patches;
161  DECLARE_ALIGNED(16, float, X_low)[32][40][2];
163  DECLARE_ALIGNED(16, float, X_high)[64][40][2];
165  DECLARE_ALIGNED(16, float, X)[2][2][38][64];
167  DECLARE_ALIGNED(16, float, alpha0)[64][2];
169  DECLARE_ALIGNED(16, float, alpha1)[64][2];
171  float e_origmapped[7][48];
173  float q_mapped[7][48];
177  float e_curr[7][48];
179  float q_m[7][48];
181  float s_m[7][48];
182  float gain[7][48];
188 
189 #endif /* AVCODEC_SBR_H */