path: root/libavcodec/aacps.h (plain)
blob: 61edce35496435720215d2e09c98e1d870ebd81f

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 "aacpsdsp.h"
28	#include "avcodec.h"
29	#include "get_bits.h"
30
31	#define PS_MAX_NUM_ENV 5
32	#define PS_MAX_NR_IIDICC 34
33	#define PS_MAX_NR_IPDOPD 17
34	#define PS_MAX_SSB 91
35	#define PS_MAX_AP_BANDS 50
36	#define PS_QMF_TIME_SLOTS 32
37	#define PS_MAX_DELAY 14
38	#define PS_AP_LINKS 3
39	#define PS_MAX_AP_DELAY 5
40
41	typedef struct PSContext {
42	int start;
43	int enable_iid;
44	int iid_quant;
45	int nr_iid_par;
46	int nr_ipdopd_par;
47	int enable_icc;
48	int icc_mode;
49	int nr_icc_par;
50	int enable_ext;
51	int frame_class;
52	int num_env_old;
53	int num_env;
54	int enable_ipdopd;
55	int border_position[PS_MAX_NUM_ENV+1];
56	int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Intensity Difference Parameters
57	int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-Channel Coherence Parameters
58	/* ipd/opd is iid/icc sized so that the same functions can handle both */
59	int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Phase Difference Parameters
60	int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Overall Phase Difference Parameters
61	int is34bands;
62	int is34bands_old;
63
64	DECLARE_ALIGNED(16, INTFLOAT, in_buf)[5][44][2];
65	DECLARE_ALIGNED(16, INTFLOAT, delay)[PS_MAX_SSB][PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2];
66	DECLARE_ALIGNED(16, INTFLOAT, ap_delay)[PS_MAX_AP_BANDS][PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2];
67	DECLARE_ALIGNED(16, INTFLOAT, peak_decay_nrg)[34];
68	DECLARE_ALIGNED(16, INTFLOAT, power_smooth)[34];
69	DECLARE_ALIGNED(16, INTFLOAT, peak_decay_diff_smooth)[34];
70	DECLARE_ALIGNED(16, INTFLOAT, H11)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
71	DECLARE_ALIGNED(16, INTFLOAT, H12)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
72	DECLARE_ALIGNED(16, INTFLOAT, H21)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
73	DECLARE_ALIGNED(16, INTFLOAT, H22)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
74	DECLARE_ALIGNED(16, INTFLOAT, Lbuf)[91][32][2];
75	DECLARE_ALIGNED(16, INTFLOAT, Rbuf)[91][32][2];
76	int8_t opd_hist[PS_MAX_NR_IIDICC];
77	int8_t ipd_hist[PS_MAX_NR_IIDICC];
78	PSDSPContext dsp;
79	} PSContext;
80
81	void AAC_RENAME(ff_ps_init)(void);
82	void AAC_RENAME(ff_ps_ctx_init)(PSContext *ps);
83	int AAC_RENAME(ff_ps_read_data)(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left);
84	int AAC_RENAME(ff_ps_apply)(AVCodecContext *avctx, PSContext *ps, INTFLOAT L[2][38][64], INTFLOAT R[2][38][64], int top);
85
86	#endif /* AVCODEC_AACPS_H */
87