FFmpeg
libavcodec
adpcm.h
Go to the documentation of this file.
1
/*
2
* Copyright (c) 2001-2003 The FFmpeg project
3
*
4
* This file is part of FFmpeg.
5
*
6
* FFmpeg is free software; you can redistribute it and/or
7
* modify it under the terms of the GNU Lesser General Public
8
* License as published by the Free Software Foundation; either
9
* version 2.1 of the License, or (at your option) any later version.
10
*
11
* FFmpeg is distributed in the hope that it will be useful,
12
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14
* Lesser General Public License for more details.
15
*
16
* You should have received a copy of the GNU Lesser General Public
17
* License along with FFmpeg; if not, write to the Free Software
18
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
*/
20
21
/**
22
* @file
23
* ADPCM encoder/decoder common header.
24
*/
25
26
#ifndef AVCODEC_ADPCM_H
27
#define AVCODEC_ADPCM_H
28
29
#include <stdint.h>
30
31
typedef
struct
ADPCMChannelStatus
{
32
int
predictor
;
33
int16_t
step_index
;
34
int
step
;
35
/* for encoding */
36
int
prev_sample
;
37
38
/* MS version */
39
int
sample1
;
40
int
sample2
;
41
int
coeff1
;
42
int
coeff2
;
43
int
idelta
;
44
}
ADPCMChannelStatus
;
45
46
int16_t
ff_adpcm_argo_expand_nibble
(
ADPCMChannelStatus
*cs,
int
nibble,
int
shift
,
int
flag
);
47
48
#endif
/* AVCODEC_ADPCM_H */
ADPCMChannelStatus::step_index
int16_t step_index
Definition:
adpcm.h:33
ADPCMChannelStatus::coeff1
int coeff1
Definition:
adpcm.h:41
ff_adpcm_argo_expand_nibble
int16_t ff_adpcm_argo_expand_nibble(ADPCMChannelStatus *cs, int nibble, int shift, int flag)
Definition:
adpcm.c:818
ADPCMChannelStatus::sample1
int sample1
Definition:
adpcm.h:39
ADPCMChannelStatus::coeff2
int coeff2
Definition:
adpcm.h:42
ADPCMChannelStatus::sample2
int sample2
Definition:
adpcm.h:40
shift
static int shift(int a, int b)
Definition:
bonk.c:261
ADPCMChannelStatus::prev_sample
int prev_sample
Definition:
adpcm.h:36
flag
#define flag(name)
Definition:
cbs_av1.c:474
ADPCMChannelStatus::step
int step
Definition:
adpcm.h:34
ADPCMChannelStatus::idelta
int idelta
Definition:
adpcm.h:43
ADPCMChannelStatus::predictor
int predictor
Definition:
adpcm.h:32
ADPCMChannelStatus
Definition:
adpcm.h:31
Generated on Sat Aug 31 2024 19:21:30 for FFmpeg by
1.8.17