FFmpeg
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 FFmpeg.
6  *
7  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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_AACPS_H
23 #define AVCODEC_AACPS_H
24 
25 #include <stdint.h>
26 
27 #include "libavutil/mem_internal.h"
28 
29 #include "aacpsdsp.h"
30 #include "avcodec.h"
31 #include "get_bits.h"
32 
33 #define PS_MAX_NUM_ENV 5
34 #define PS_MAX_NR_IIDICC 34
35 #define PS_MAX_NR_IPDOPD 17
36 #define PS_MAX_SSB 91
37 #define PS_MAX_AP_BANDS 50
38 #define PS_QMF_TIME_SLOTS 32
39 #define PS_MAX_DELAY 14
40 #define PS_AP_LINKS 3
41 #define PS_MAX_AP_DELAY 5
42 #define PS_BASELINE 0 ///< Operate in Baseline PS mode
43  ///< Baseline implies 10 or 20 stereo bands,
44  ///< mixing mode A, and no ipd/opd
45 
46 #define numQMFSlots 32 //numTimeSlots * RATE
47 
48 typedef struct PSCommonContext {
49  int start;
51  int iid_quant;
55  int icc_mode;
60  int num_env;
63  int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Intensity Difference Parameters
64  int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-Channel Coherence Parameters
65  /* ipd/opd is iid/icc sized so that the same functions can handle both */
66  int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Phase Difference Parameters
67  int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Overall Phase Difference Parameters
68  int is34bands;
71 
72 typedef struct PSContext {
74 
75  DECLARE_ALIGNED(16, INTFLOAT, in_buf)[5][44][2];
78  DECLARE_ALIGNED(16, INTFLOAT, peak_decay_nrg)[34];
79  DECLARE_ALIGNED(16, INTFLOAT, power_smooth)[34];
80  DECLARE_ALIGNED(16, INTFLOAT, peak_decay_diff_smooth)[34];
85  DECLARE_ALIGNED(16, INTFLOAT, Lbuf)[91][32][2];
86  DECLARE_ALIGNED(16, INTFLOAT, Rbuf)[91][32][2];
87  int8_t opd_hist[PS_MAX_NR_IIDICC];
88  int8_t ipd_hist[PS_MAX_NR_IIDICC];
90 } PSContext;
91 
92 extern const int8_t ff_k_to_i_20[];
93 extern const int8_t ff_k_to_i_34[];
94 
95 void ff_ps_init_common(void);
99  PSCommonContext *ps, int bits_left);
100 int AAC_RENAME(ff_ps_apply)(AVCodecContext *avctx, PSContext *ps, INTFLOAT L[2][38][64], INTFLOAT R[2][38][64], int top);
101 
102 #endif /* AVCODEC_AACPS_H */
int enable_ipdopd
Definition: aacps.h:61
int icc_mode
Definition: aacps.h:55
void AAC_RENAME() ff_ps_init(void)
Definition: aacps.c:740
int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]
Overall Phase Difference Parameters.
Definition: aacps.h:67
float INTFLOAT
Definition: aac_defines.h:88
#define PS_MAX_AP_DELAY
Definition: aacps.h:41
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:117
const int8_t ff_k_to_i_34[]
Table 8.49.
Definition: aacpsdata.c:152
int nr_ipdopd_par
Definition: aacps.h:53
bitstream reader API header.
const int8_t ff_k_to_i_20[]
Table 8.48.
Definition: aacpsdata.c:145
int enable_ext
Definition: aacps.h:57
#define PS_MAX_NR_IIDICC
Definition: aacps.h:34
#define R
Definition: huffyuvdsp.h:34
int is34bands_old
Definition: aacps.h:69
int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, PSCommonContext *ps, int bits_left)
Definition: aacps_common.c:134
#define AAC_RENAME(x)
Definition: aac_defines.h:85
#define PS_MAX_NUM_ENV
Definition: aacps.h:33
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
#define PS_MAX_SSB
Definition: aacps.h:36
int nr_icc_par
Definition: aacps.h:56
#define L(x)
Definition: vp56_arith.h:36
#define PS_MAX_DELAY
Definition: aacps.h:39
PSDSPContext dsp
Definition: aacps.h:89
int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]
Inter-channel Intensity Difference Parameters.
Definition: aacps.h:63
PSCommonContext common
Definition: aacps.h:73
int frame_class
Definition: aacps.h:58
Libavcodec external API header.
int is34bands
Definition: aacps.h:68
main external API structure.
Definition: avcodec.h:531
int num_env
Definition: aacps.h:60
void AAC_RENAME() ff_ps_ctx_init(PSContext *ps)
Definition: aacps.c:745
int num_env_old
Definition: aacps.h:59
void ff_ps_init_common(void)
Definition: aacps_common.c:332
#define PS_AP_LINKS
Definition: aacps.h:40
#define PS_MAX_AP_BANDS
Definition: aacps.h:37
int nr_iid_par
Definition: aacps.h:52
int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]
Inter-channel Phase Difference Parameters.
Definition: aacps.h:66
int enable_icc
Definition: aacps.h:54
#define PS_QMF_TIME_SLOTS
Definition: aacps.h:38
int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]
Inter-Channel Coherence Parameters.
Definition: aacps.h:64
int iid_quant
Definition: aacps.h:51
int AAC_RENAME() ff_ps_apply(AVCodecContext *avctx, PSContext *ps, INTFLOAT L[2][38][64], INTFLOAT R[2][38][64], int top)
Definition: aacps.c:719
int enable_iid
Definition: aacps.h:50
int border_position[PS_MAX_NUM_ENV+1]
Definition: aacps.h:62