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libavcodec
aacps.h
Go to the documentation of this file.
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/*
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* MPEG-4 Parametric Stereo definitions and declarations
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* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_PS_H
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#define AVCODEC_PS_H
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#include <stdint.h>
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#include "
avcodec.h
"
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#include "
get_bits.h
"
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#define PS_MAX_NUM_ENV 5
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#define PS_MAX_NR_IIDICC 34
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#define PS_MAX_NR_IPDOPD 17
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#define PS_MAX_SSB 91
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#define PS_MAX_AP_BANDS 50
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#define PS_QMF_TIME_SLOTS 32
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#define PS_MAX_DELAY 14
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#define PS_AP_LINKS 3
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#define PS_MAX_AP_DELAY 5
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typedef
struct
{
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int
start
;
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int
enable_iid
;
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int
iid_quant
;
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int
nr_iid_par
;
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int
nr_ipdopd_par
;
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int
enable_icc
;
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int
icc_mode
;
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int
nr_icc_par
;
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int
enable_ext
;
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int
frame_class
;
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int
num_env_old
;
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int
num_env
;
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int
enable_ipdopd
;
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int
border_position[
PS_MAX_NUM_ENV
+1];
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int8_t iid_par[
PS_MAX_NUM_ENV
][
PS_MAX_NR_IIDICC
];
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int8_t icc_par[
PS_MAX_NUM_ENV
][
PS_MAX_NR_IIDICC
];
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/* ipd/opd is iid/icc sized so that the same functions can handle both */
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int8_t ipd_par[
PS_MAX_NUM_ENV
][
PS_MAX_NR_IIDICC
];
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int8_t opd_par[
PS_MAX_NUM_ENV
][
PS_MAX_NR_IIDICC
];
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int
is34bands
;
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int
is34bands_old
;
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float
in_buf[5][44][2];
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float
delay[
PS_MAX_SSB
][
PS_QMF_TIME_SLOTS
+
PS_MAX_DELAY
][2];
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float
ap_delay[
PS_MAX_AP_BANDS
][
PS_AP_LINKS
][
PS_QMF_TIME_SLOTS
+
PS_MAX_AP_DELAY
][2];
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float
peak_decay_nrg[34];
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float
power_smooth[34];
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float
peak_decay_diff_smooth[34];
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float
H11[2][
PS_MAX_NUM_ENV
+1][
PS_MAX_NR_IIDICC
];
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float
H12[2][
PS_MAX_NUM_ENV
+1][
PS_MAX_NR_IIDICC
];
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float
H21[2][
PS_MAX_NUM_ENV
+1][
PS_MAX_NR_IIDICC
];
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float
H22[2][
PS_MAX_NUM_ENV
+1][
PS_MAX_NR_IIDICC
];
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int8_t opd_hist[
PS_MAX_NR_IIDICC
];
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int8_t ipd_hist[
PS_MAX_NR_IIDICC
];
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}
PSContext
;
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void
ff_ps_init
(
void
);
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void
ff_ps_ctx_init
(
PSContext
*ps);
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int
ff_ps_read_data
(
AVCodecContext
*avctx,
GetBitContext
*gb,
PSContext
*ps,
int
bits_left);
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int
ff_ps_apply
(
AVCodecContext
*avctx,
PSContext
*ps,
float
L[2][38][64],
float
R
[2][38][64],
int
top);
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#endif
/* AVCODEC_PS_H */