mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
/*
|
|
* MPEG-4 Parametric Stereo definitions and declarations
|
|
* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_PS_H
|
|
#define AVCODEC_PS_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#define PS_MAX_NUM_ENV 5
|
|
#define PS_MAX_NR_IIDICC 34
|
|
#define PS_MAX_NR_IPDOPD 17
|
|
#define PS_MAX_SSB 91
|
|
#define PS_MAX_AP_BANDS 50
|
|
#define PS_QMF_TIME_SLOTS 32
|
|
#define PS_MAX_DELAY 14
|
|
#define PS_AP_LINKS 3
|
|
#define PS_MAX_AP_DELAY 5
|
|
|
|
typedef struct {
|
|
int start;
|
|
int enable_iid;
|
|
int iid_quant;
|
|
int nr_iid_par;
|
|
int nr_ipdopd_par;
|
|
int enable_icc;
|
|
int icc_mode;
|
|
int nr_icc_par;
|
|
int enable_ext;
|
|
int frame_class;
|
|
int num_env_old;
|
|
int num_env;
|
|
int enable_ipdopd;
|
|
int border_position[PS_MAX_NUM_ENV+1];
|
|
int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-channel Intensity Difference Parameters
|
|
int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-Channel Coherence Parameters
|
|
/* ipd/opd is iid/icc sized so that the same functions can handle both */
|
|
int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-channel Phase Difference Parameters
|
|
int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Overall Phase Difference Parameters
|
|
int is34bands;
|
|
int is34bands_old;
|
|
|
|
float in_buf[5][44][2];
|
|
float delay[PS_MAX_SSB][PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2];
|
|
float ap_delay[PS_MAX_AP_BANDS][PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2];
|
|
float peak_decay_nrg[34];
|
|
float power_smooth[34];
|
|
float peak_decay_diff_smooth[34];
|
|
float H11[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
|
|
float H12[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
|
|
float H21[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
|
|
float H22[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
|
|
int8_t opd_hist[PS_MAX_NR_IIDICC];
|
|
int8_t ipd_hist[PS_MAX_NR_IIDICC];
|
|
} PSContext;
|
|
|
|
void ff_ps_init(void);
|
|
void ff_ps_ctx_init(PSContext *ps);
|
|
int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left);
|
|
int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top);
|
|
|
|
#endif /* AVCODEC_PS_H */
|