aacps.h
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1 /*
2  * MPEG-4 Parametric Stereo definitions and declarations
3  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_PS_H
23 #define AVCODEC_PS_H
24 
25 #include <stdint.h>
26 
27 #include "avcodec.h"
28 #include "get_bits.h"
29 
30 #define PS_MAX_NUM_ENV 5
31 #define PS_MAX_NR_IIDICC 34
32 #define PS_MAX_NR_IPDOPD 17
33 #define PS_MAX_SSB 91
34 #define PS_MAX_AP_BANDS 50
35 #define PS_QMF_TIME_SLOTS 32
36 #define PS_MAX_DELAY 14
37 #define PS_AP_LINKS 3
38 #define PS_MAX_AP_DELAY 5
39 
40 typedef struct {
41  int start;
43  int iid_quant;
47  int icc_mode;
52  int num_env;
54  int border_position[PS_MAX_NUM_ENV+1];
55  int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
56  int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
57  /* ipd/opd is iid/icc sized so that the same functions can handle both */
58  int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
59  int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC];
60  int is34bands;
62 
63  float in_buf[5][44][2];
66  float peak_decay_nrg[34];
67  float power_smooth[34];
68  float peak_decay_diff_smooth[34];
69  float H11[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
70  float H12[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
71  float H21[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
72  float H22[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
73  int8_t opd_hist[PS_MAX_NR_IIDICC];
74  int8_t ipd_hist[PS_MAX_NR_IIDICC];
75 } PSContext;
76 
77 void ff_ps_init(void);
78 void ff_ps_ctx_init(PSContext *ps);
79 int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left);
80 int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top);
81 
82 #endif /* AVCODEC_PS_H */
int is34bands
Definition: aacps.h:60
int nr_iid_par
Definition: aacps.h:44
int enable_icc
Definition: aacps.h:46
int enable_ext
Definition: aacps.h:49
int enable_ipdopd
Definition: aacps.h:53
void ff_ps_ctx_init(PSContext *ps)
Definition: aacps.c:1042
int enable_iid
Definition: aacps.h:42
int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top)
Definition: aacps.c:980
#define PS_MAX_AP_DELAY
Definition: aacps.h:38
#define R
Definition: dsputil.c:1977
int num_env_old
Definition: aacps.h:51
bitstream reader API header.
#define PS_MAX_NR_IIDICC
Definition: aacps.h:31
int iid_quant
Definition: aacps.h:43
int num_env
Definition: aacps.h:52
int nr_icc_par
Definition: aacps.h:48
#define PS_MAX_NUM_ENV
Definition: aacps.h:30
#define PS_MAX_SSB
Definition: aacps.h:33
void ff_ps_init(void)
Definition: aacps.c:1010
#define PS_MAX_DELAY
Definition: aacps.h:36
int start
Definition: aacps.h:41
external API header
main external API structure.
Definition: avcodec.h:1329
int is34bands_old
Definition: aacps.h:61
#define PS_AP_LINKS
Definition: aacps.h:37
#define PS_MAX_AP_BANDS
Definition: aacps.h:34
#define PS_QMF_TIME_SLOTS
Definition: aacps.h:35
int frame_class
Definition: aacps.h:50
int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left)
Definition: aacps.c:150
int nr_ipdopd_par
Definition: aacps.h:45
int icc_mode
Definition: aacps.h:47